A Problem Question on Contract Law

A Problem Question on Contract Law Introduction A contract refers to an agreement between two or more parties which is legally binding in the eyes of the law. Based on Contract Act 1950, section 2 (h), an agreement that is enforceable by law is a contract. Any other agreements that is not enforceable by law is said to be void, section 2 (g). Therefore, section 2 (j) a contract which is ceases to be enforceable by the law becomes void when it ceases to be enforceable. A contract consists of 6 elements which is proposal (section 2) and acceptance (section 7). The agreement made must be certain and lawful to fulfill the requirement of entering a contract. The consideration (section 26) of a contract have to be in price theory or the benefit and detriment theory. Next, certainty (section 30) said that the terms and agreements of a contract need to be certain and clear. Besides that, all party in the contract have to be free consent, section 10. Lastly, section 11 capacity said that minors, person that disqualified from contracting by any law and unsound mind are not competent to enter a contract. Ah Beng Ah Beng wished to sell his 3-year old motorcycle. He have the intention to create legal relations, commercial contract. In a business contract the presumption is that there is an intention to create legal relations. Unlike domestic contract where agreement made between parties are stated as no intention to create such a legal relations. For example, agreement between spouses, between parent and child and agreements between friends. Case law Balfour v. Balfour. The husband promised to pay a monthly allowance as maintenance to his wife. The court held that it was not a legally enforceable agreement, the parties should be attended by legal consequences. According to section 2 (a), when one signifies to another his willingness to do said to make a proposal, Ah Beng is the offeror before he advertised the sale in a local newspaper. After the advertisement,he becomes an acceptor. Advertisement consist of two types of offer, Bilateral and Unilateral offer. Unilateral offer is a party (X) undertakes to do something is another party (Y) decides to accept by performing some lawful act specified by X. For instance, Carlill v. Carbolic Smoke Ball Co. Carbolic Smoke Ball company made an offer to the pubic by issuing an advertisement saying that whoever still suffered from influenza after taking their product (a drug) will get  £ 100 in a specified manner and for a specified period of time. Mrs Carlill sued the company for the promise reward. The court held that the advertisement is an offer to the world. Referring to the Bilateral case law Majumder v. Attorney General of Sarawak 1967, a newspaper advertisement stated a medical officer war required and set out the salary scale. The Federal Court held that the advertisement in the newspaper for the post of a medical officer was an invitation to treat. Therefore the advertisement by Ah Beng is a Bilateral Contracts, where both parties make promises to one another, a mutual exchange of promise and this leads to invitation to treat. For example, a job advertisement is not an offer but an Invitation to Treat. The applicant is the offeror for the job and if it is accepted, the promisor is obligated to perform by giving the applicant a position and remuneration in accordance with the advertisement, a promise for a promise. Ah Beng and Ahmad Ah Beng called his colleague Ahmad who had previously told him that he is looking for a used motorcycle for his son for RM 2,500.00 in cash. As they discussed, Ahmad asked Ah Beng to hold the offer till end of the month and Ah Beng did not give an affirmative answer. Based on section 2 (a) , when one signifies to another his willingness to do said to make a proposal. Therefore Ah Beng is the offeror and Ahmad is the acceptor. However, the contract is not valid. There are components under Contracts Act 1950 to determine whether a contract is valid or invalid. When Ah Beng offered Ahmad at the first place, Ahmad request for extension, â€Å"until the end of the month†, setting a new request to Ah Beng. According to section 7 (a), conditional acceptance is no acceptance. Case law Branca v. Cobarro. Ahmad’s act has caused the contract to be invalid. Moreover, at the end of the conversation Ah Beng did not give an affirmative answer to Ahmad , section 7 (a) Acceptance must be absolute as referring to case law of Kam Mah Theatre Sdn. Bhd. v. Tan Lay Soon 1994. The acceptance given by Ahmad must be absolute and unqualified in order to make the contract between him and Ah Beng valid. After two days, Ahmad rang up Ah Beng’s house to inform that he is interested to buy the motorcycle and will go over the next day to make the payment of RM 2,500.00 after seeing Ah Beng has advertised to sell the motorcycle for RM 2,800.00 on the local newspaper. Unfortunately Ah Beng was not in and Ah Beng’s wife is the person who was answering the call. Based on section 4 (1) , a communication is complete when it comes to the knowledge of the person to whom it is made. Refers to case law, R v. Clarke. Clarke was an accomplice to the murder of two policeman, the Australian published a notice granting pardon and a reward of A$ 1,000. Clark supplied the information but he admitted that at the time he gave the information he had forgotten about the reward money. The court held that he was not entitled to the reward as he was not aware of the reward at all. The contract is therefore invalid as Ahmad did not deliver his messages and offers to Ah Beng’s knowledge and not conforming to Section 4(2)(b). However, the contract can still be valid if Ah Beng give authorization to his wife to accept the offer on behalf of Ah Beng. This is illustrated in the case law Powell n Lee, the court held that there was no authorized communication made by the acceptor. Ah Beng and Maniam Maniam read the advertisement and went over Ah Beng’s house to look for the motorcycle. Maniam’s act is to inquire more information about the motorcycle. The conversation between Maniam and Ah Beng signifies that the advertisement made by Ah Beng regarding the motorcycle is uncertain as there are informations about the motorcycle that Ah Beng did not mention clearly in the advertisement such as the model of the motorcycle, colour of the motorcycle, accident free and current condition of the motorcycle have not been told from the advertisement. This have caused uncertainty for the consideration of an agreement, therefore invalid contract based on section 30. This scenario can be referred to the case law, Karuppan Chetty v. Suah Thian 1916, â€Å"lease at $35.00 per month as long as he like† is unacceptable by the court therefore declared void for uncertainty. Maniam noticed that the battery was weak and both of the tyres were worn off during the inspection of the motorcycle. Ah Beng immediately offered the price to RM 2,700.00 and has become the new offeror, on the other hand Maniam become the new acceptor. As the negotiation going on, case law Lau Brothers Co v. China Pacific Navigation Co. Ltd 1965, no agreement will be formed under negotiation. However Maniam agreed to bring the cash on the next day expecting Ah Beng to replace the two tyres with the new ones. It is a new condition set by Maniam, leading to a counter offer. Based on section 7 (a), the acceptance made must be absolute and unqualified. Therefore the contract is not valid as Maniam’s counter offer is a rejection of the initial contract, contracts subject to contract. The contract would only be valid if it is free consent from both parties. Refers to case law Hyde v. Wrench 1840, the defendant offered to sell his estate to the plaintiff on 6th of Jun for  £1,000. On 8th of June the plaintiff made a counter proposal, 27th of June the defendant refused to accept his offer. Two days later the plaintiff wrote to the defendant that he was prepare to pay  £1,000, the defendant refused. The court held that there was no acceptance as by rejecting the original offer the plaintiff had destroyed the offer. In effect the plaintiff is now making a new offer. By asking Ah Beng to replace the worn off tyres with new ones, Maniam has become the offeror again whereas Ah Beng as the acceptor of this new agreement. At the end of the day, Ah Beng did not give response to Maniam’s further request. Based on section 7 (b), Mental acceptance is no acceptance, silence will not amount to acceptance. Refers to case law Felthouse v. Bindley, plaintif’s uncle offered to buy a horse from plaintiff for  £30 adding â€Å"If i hear no more about him, i consider the horse mine at the price†. The court held that the plaintiff’s silence did not amount to acceptance of the offer. In this case, Ah Beng’s reaction towards Maniam is not an acceptance to the contract, therefore the agreements between Ah Beng and Maniam is invalid. Ah Beng and Jack A classmate of Ah Beng’s 16 year old son, also came to know about the advertisement. Jack immediately went over to Ah Beng’s house and gave five hundred ringgit in cash to Ah Beng’s son with a promise that he will pay the balance the next day after he gets it from his parents. Section 10 (1) states that if the agreements are made by free consent of parties for a lawful consideration are not hereby expressly declared to be void. Jack is willing to enter the contract by offering his money Ah Beng without being forced. Based on section 11 Capacity as per Age of Majority Act 1971, said that the age of majority to enter a contract is at the age of 18 and above. Case law Tan Hee Juan v. Teh Boon Keat, a minor entered into a contract of transferring land. The court held that the contract was void. Jack is a minor, 16 years old and incapable of entering a contract. Moreover, section 69 said that the necessaries suited to his condition in life is not valid. Case law Nash Vs. Inman (1908) a minor, who was already having sufficient supply of clothing suitable to his position, was supplied further clothing by a tailor. Unlike case law Scarborough v. Sturzaker 1905 where the minor needs a motorcycle to travel to work for 12 miles (19 km ) distance everyday. In this case, a motorcycle is necessaries suited to the condition in life. However, there are few exception for necessity which is valid contract. Such as marriage contract, case law Rajeswary v. Balakrishnan 1958. Case law Government of Malaysia v. Gurcharan Singh 1971 stated that scholarship contract is valid for a minor as education is a necessity nowadays. Insurance is also a valid contract for a minor. Based on Insurance Act 1963, a minor can enter an insurance contract if he is above ten years old. According to section 66, obligation of person who has received advantage under void agreement or contract that becomes void. When a contract becomes void, any person who has received any advantage under the agreement is bound to restore it, or make compensation for it to the person from whom he received it. Therefore, Ah Beng is obligated to restore balance, return the five hundred ringgit to Jack. Referring to case law, Thong Foo Ching Ors v. Shigenori Ono 1998. Conclusion In conclusion, non of the person above have a valid contract with Ah Beng. First, the communication is yet to be complete between Ah Beng and Ahmad as Ahmad called and Ah Beng’s wife is the person who answered the call (section 4 (1) Communication). Next, being silence did not amount to acceptance of the offer (section 7 (a). Therefore invalid contract with Maniam as Ah Beng remain silence. Next, the capacity of both parties must be competent to enter a contract in order to make it legal, section 11 Competent to contract. In this case the contract between Ah Beng and Jack is invalid due to the age of Jack, minor (16 years old) .

Extracorporeal Membrane Oxygenation (ECMO)

Extracorporeal Membrane Oxygenation (ECMO) Cardiovascular Devices Chiara Tarenghi When a patient suffers from critical conditions which prevent to lungs or heart to work properly and to grant adequate blood flow and oxygen supply, either because of congenital disease, surgery or other reasons (severe pneumonia, sepsis, heart malformations, congenital diaphragmatic hernia, Respiratory Distress Syndrome ), a mechanical circulatory support is needed to take over temporarily the cardiopulmonary functions. These devices are known as extracorporeal life support (ECLS). ECMO is an invasive, non-therapeutic technique, consists essentially of an artificial external lung, a membrane oxygenator, which reproduces the physiological function of the gas exchange in the lungs (the blood releases CO2 and gains O2 according to the partial pressure gradient). It has successfully been employed as a bridge to recovery, cardiac transplantation, or implantation of a ventricular assist device, and it has met great application in paediatric surgery field (i.e. premature infants). It grants a steady amount of oxygen to the body while resting   and recover the lungs and heart. The device pumps blood from the body through the oxygenator with a roller pump (or a centrifugal pump, which causes major haemolysis though). There are three types of oxygenator commercially available: bubble oxygenator ( the gas is bubbled into blood), membrane oxygenator (allows exchanges of diffusion through a semipermeable membrane of silicon rubber that completely separates gas and blood), and hollow fibres oxygenator (fibres of PVC or PTFE hollow inside and semipermeable to gases). The blood is then warmed up through a heat exchanger (a coiled tubing containing warm water flowing counter current) and is injected back into the body. Each section of the machine is connected through cannulae. The blood flow is monitored continuamente to avoid the presence of microscopic air bubbles, thrombi and other emboli. Hazardous occlusions of tubing or thrombosis are detected by pressure monitors. Before letting blood flow through the tubes, the latter are primed by flushing with CO2 and then with crystalloid prime, albumin (to limit platelets adherence) and finally blood. The flow and amount of oxygenation is adjusted according to the needs of the patient. As the heart function improves, the flow is lowered. Blood volume can be assessed by urine output and central venous and mean arterial pressure. After a few days of mechanical assistance, the device is usually removed. ECMO is a valid alternative to pulmonary ventilation, since the latter pushes oxygen into patients lungs, regulating its amount and pressure, but high gas pressure could further damage lungs. Risks associated to ECMO include blood clot formation (which is prevented through anticoagulant like heparin) and, related to this, haemorrhage, infection, transfusions problems (thromboembolism and related stroke or ischaemia), mechanical failures. There are different ways of perfusion : ECMO VENO ARTERIAL (VA) : It requires three tubes to be inserted, venous blood is removed from the right atrium or vena cava, passing through the   jugular or femoral vein, and returned to ascending aorta (central ECMO) or femoral artery (peripheral artery). It is a hemodynamic and respiratory support for patients suffering from cardiogenic shock, sepsis, severe pneumonia, persistent pulmonary hypertension. Advantages: Low cost, can be applied to children and adults, support double heart and lungs. Disadvantages: It is more invasive than VV ECMO is a complex circuit, can cause embolism, neurological complications and require a sternotomy. ECMO VENO VENOUS   (VV):   In this case two tubes are inserted into the largest veins as jugular or femoral, but most often a single Y shaped cannula is inserted in the both veins. Blood is drained from the vena cava , blood is returned through the right atrium into the tricuspid valve. It is only a respiratory support for patients suffering from severe respiratory failure, asthmas, persistent pulmonary hypertension. Disadvantages: No cardiac support. ARTERIO VENUS   (AV):uses patients arterial pressure to pump the blood from artery to vein, it can be used only as a short-term support.

Assigment Manufacturing Process

FACULTI OF MECHANICAL ENGINEERING UNIVERSITI MALAYSIA PAHANG BMM3643 (Sem II 2012/13) Assignment #4 1. a) What distinguishes machining from other manufacturing processes? b) What is a machining center? c) How important is the control of cutting-fluid temperature in operations performed in machining centers? Explain. (8 marks) 2. a) What are the primary considerations in tool selection? b) What is the advantage of a helical-tooth cutter over a straighttooth cutter for slab milling? c) What are the consequences if a cutting tool chips? (8 marks) 3. ) Why might it be desirable to use a heavy depth of cut and a light feed at a given speed in turning? b) Explain the reasoning behind the various design guidelines for turning. c) In drilling, the deeper the hole, the greater the torque. Why? (8 marks) 4. a) For producing flat surfaces in mass production machining,how does face milling differ basically from peripheral milling? b) Why is end milling such an important versatile process? c) Why is grain spacing important in grinding wheels? Explain the relationship between grit size and surface finish. (8 marks) 5. ) Why has the wire-EDM process become so widely used in industry, especially in tool and die manufacturing? Explain. e) What is meant by the term overcut in electric discharge machining? f) What is the nature of the surface obtained by electro discharge machining? (8 marks) 6. g) Estimate the time required for face milling an 20. 32 cm-long, 7. 62 cm-wide brass block using a 2032 cm-diameter cutter with 12 HSS teeth. (Given: Using the high-speed-steel tool, let’s take a recommended cutting speed for brass (a copper alloy) at 90 m/min = 1. 5 m/sand the maximum feed per tooth as 0. mm) h) In a surface grinding operation performed on hardened plain carbon steel, the grinding wheel has a diameter = 200 mm and width = 25 mm. The wheel rotates at 2400 rev/min, with a depth of cut (infeed) = 0. 05 mm/pass and a crossfeed = 3. 50 mm. The reciprocating speed of t he work is 6 m/min, and the operation is performed dry. Determine ; i) the length of contact between the wheel and the work, ii) the volume rate of metal removed. iii) If there are 64 active grits/cm2 of wheel surface, estimate the number of chips formed per unit time. (10 marks)

IB Chemistry Lab Design †compare the effect of temperature on the concentrations of Vitamin C and Vitamin A in solution Essay

Research Question: To compare the effect of temperature on the concentrations of Vitamin C and Vitamin A in solution. Background Information: Many researchers claim that the vitamin content in the food we eat decreases as we cook the food, since it is being exposed to high temperatures. This really intrigued me since cooking is one of my hobbies, and I always try and check the nutritional value of meals that I cook. With this in mind, it was quintessential for me to see for myself if these claims hold true. To narrow the scope of the investigation, I chose Vitamins A and C to do this study upon. The claims state that the enzyme in whose form Vitamin C is found, gets denatured (or oxidised) at temperatures over 70Â °C as well as at low temperatures, in the freezer. Also, studies claim that Vitamin A (in the form of retinol) gets oxidised at high temperatures, during cooking. Once these vitamins get oxidised, they are lost to us. This investigation will compare the effects of high temperature on Vitamin A and Vitamin C solutions. http://chemmovies.unl.edu/chemistry/smallscale/SSGifs/SS054Ascorbic.gif The ascorbic acid enzyme gets denatured at high temperatures because the tertiary structure of the protein, which the enzyme is made up of, unravels, causing the active site of the enzyme to change in shape. This leads to the substrate being unable to fit into the active site, and we say that the enzyme is denatured. This denaturing can take place at extremes of pH too.The Vitamin A (retinol) gets oxidised because, at high temperatures, it reacts with oxygen in the air to form a carboxylic acid (retinoic acid). In the laboratory, ascorbic acid found in fruits and vegetables can be simulated by adding ascorbic acid crystals to water, to form a mildly acidic solution. This solution can also be used as the standard solution during titration to find concentration of ascorbic acid. To simulate Vitamin A, we can simply add retinol to water to form a standard solution. Hypothesis: At higher temperatures, both the concentration of Vitamin C and Vitamin A can be expected to decrease. However, I expect the decrease to be greater in the case of the Vitamin C solution since (having protein-like properties) it is more sensitive to extremes of temperature. Also, the alcohol retinol has a high boiling point, so I believe that it will be more resistant to oxidation too. Variables: Independent Variable Why and How it is Changed Temperature to which the Vitamin C/A solution is heated The factor whose effect is being studied on the concentration of Vitamin C/A in a solution is the temperature the solution is heated to. Therefore, the temperature is the independent variable. In order to change the temperature, equal quantities of the same Vitamin C/A solution are heated to different temperatures. The different temperatures taken are – 30Â °C, 50Â °C, 70Â °C and 90Â °C. As a control, one solution is placed at room temperature. A thermometer is used to measure the temperature of the solution. Investigation at each temperature will be repeated 3 times, to ensure reliability. Dependent Variable Why and How it is Recorded Concentration of Vitamin C/A in solution (in mol dm-3), after exposure to temperature The effect of temperature on the concentration of Vitamin C/A in a solution is being studied, thus the concentration is the dependent variable. As the temperature moves further away from room temperature (above or below) the concentration of Vitamin C/A in the solution should decrease due to denaturing or oxidation. The concentration of Vitamin C is calculated by doing an iodine titration. A starch solution is added to a standard Vitamin C solution which is the titrant. Into this, a solution of potassium iodide and potassium iodate is titrated till a blue colour is obtained (end point). This is repeated thrice. The average volume of iodine solution used is calculated, and divided by the concentration of Vitamin C. Then, the solutions of unknown concentrations are titrated and unitary method is used to calculate their concentrations. The concentration of Vitamin A is calculated using a redox titration. This is done by making a solution of acid dichromate, potassium iodide and starch. This is titrated against a solution of sodium thiosulfate of known concentration. The volume of thiosulfate used is noted. Then, the Vitamin A solutions are added to a similar solution of dichromate, KI and starch, and titration is carried out with thiosulfate. For every 1 less mole of thiosulfate used there is 0.25 mole of alcohol in the sample (according to the chemical equations) which was tested. Controlled Variable Why and How it is Maintained pH of Vitamin solution Extremes of pH can also lead to the denaturing of enzymes, so if pH changes it will interfere with the results, potentially giving inaccurate results. Thus, the pH needs to be kept a constant. This can be done by adding a few drops of acidic buffer to the initial solution. Presence of Antioxidants Antioxidants including salts such as sodium chloride tend to ‘protect’ ascorbic acid from being oxidised, and thus their presence may lead to inaccurate results. Thus, they need to be eliminated. This can be done by using distilled water (without any salts) while preparing the solution of ascorbic acid. Head Space Present in System The ascorbic acid gets denatured because of oxidation by air. Thus, if the volume of air present in the system changes, the results will also change invariably. To prevent this, the amount of head space present in the system must be kept constant. This can be done by placing a lid on top of the beaker in which the acid solution is heated. Initial Concentration of Ascorbic Acid solution If the initial concentration of ascorbic acid in the solution is different, then the final concentration will also be affected. This can be avoided by adding the same mass of ascorbic acid to the same volume of water while preparing all the sample solutions. Volume of Ascorbic Acid solution The volume of acid solution used for each temperature and each trial should be the same since otherwise it will affect the volume of iodine solution used. Therefore, the volume has to be measured accurately using a pipette for each temperature and trial (each titration). Concentration of starch, potassium iodide and potassium iodate solutions The concentration of any of these solutions will affect the volume of solution titrated during each trial. Thus, it needs to be kept a constant. This can be done by ensuring that equal masses of these reagents are added to equal volumes of water, for all the trials. Final temperature of solution The final temperature of the solution may affect the concentration of the acid in the solution, as rapid heating and cooling can encourage oxidation. Thus, to avoid errors, the solutions will be allowed to rest till they reach room temperature, and only then will they be titrated to calculate concentration. Chemicals 1. L-ascorbic acid – 3.52 g to make 1 dm3 of 0.002 M solution of acid 1. Glucose – 50 g to add to acid solution, to simulate fruit juice 1. Potassium Iodide – 10.0 g to make 1 dm3 iodine solution 1. Potassium Iodate – 0.536 g to make 1 dm3 iodine solution 1. Starch (soluble) – 0.25 g to make 50 ml of 0.5% starch solution 1. 3.00 M Sulphuric Acid – 60 ml to add to iodine solution 1. Distilled Water – To make all the solutions and washing Other Materials 1. Weighing Scale 1. Bunsen Burner 1. Tripod Stand 1. Wire Gauze 1. Mortar and Pestle 1. Pipette Filler 1. Lid (for beaker) – 4 1. Thermometer Procedure: Preparing Ascorbic Acid Solution of concentration 0.002 M 1. Measure 3.52 g of L-ascorbic acid using the weighing scale and the weighing boat (which has to be completely dry). 1. Place the weighed crystals in the mortar and use the pestle to crush the crystals into a fine powder, to aid with dissolving it in water. 1. Place the powdered acid into a 500 ml beaker and add a little distilled water to dissolve the acid. Use the glass rod to stir. 1. Once it seems that the acid has fully dissolved, add some more water to the solution, to ensure that all the acid has actually dissolved. Then, transfer the solution into the 1000 ml standard flask using a washed funnel and the glass rod. 1. Wash the beaker with water and pour into standard flask, to remove any remaining solution. Repeat this process 3 times. 1. Wash the funnel and the glass rod, letting the water run into the standard flask. 1. Make up the solution to the 1000 ml mark. Place the stopper and mix the solution thoroughly. Transfer approximately 500 ml of this solution to the 500 ml beaker, for ease of use. Preparing the 0.5 % starch solution 1. Measure 0.25 g of starch using the weighing scale and weighing boat. 1. Bring 50 ml of distilled water nearly to a boil, and then add the measured quantity of starch powder to it. Allow to cool. Preparing the Iodine Solution 1. Measure 10.0 g of potassium iodide and 0.536 g of potassium iodate using the weighing scale and weighing boat. Transfer this to a 500 ml beaker. 1. Dissolve the solids in approximately 400 ml of distilled water. Stir using the glass rod, to aid in dissolving. Add the 60 ml of 3.00 M sulphuric acid to the solution at this point. 1. Once it seems that the solids have fully dissolved, add some more water to the solution, to ensure that all of it has actually dissolved. Then, transfer the solution into a 1000 ml standard flask, using a washed funnel and the glass rod. 1. Wash the beaker with water and pour into standard flask, to remove any remaining solution. Repeat this process 3 times. 1. Wash the funnel and the glass rod, letting the water run into the standard flask. 1. Make up the solution to the 1000 ml mark. Place the stopper and mix the solution thoroughly. Transfer approximately 500 ml of this solution to a 500 ml beaker, for ease of use. Titration Set-up and Final Steps 1. Transfer 65 ml of Vitamin C solution each into 5, 250 ml beakers. 1. Keep one of the containers in a trough containing melting ice (0Â °C). Keep one at room temperature (as a control + standard solution). Heat the other three to 30Â °C, 60Â °C and 90Â °C respectively. Ensure that all the beakers are covered with a lid during heating or cooling. 1. Wash the pipette, first using tap water and then distilled water. Rinse the pipette thoroughly with the Vitamin C solution at room temperature. 1. Use a pipette to transfer 20 ml of the Vitamin C solution, at room temperature, into a conical flask. This is the standard solution (and the control) since its concentration is known (0.002 M). 1. Add 10 drops of the starch solution to the conical flask. Swirl the contents to mix properly. 1. Wash the burette with tap water followed by distilled water. Then, rinse the burette with the iodine solution. 1. Fill the burette with iodine solution till the 0.0 ml mark. 1. Titrate the iodine solution into the conical flask, swirling the conical flask at all times. The end point is reached when a blue colour is obtained that persists even after 20 seconds of swirling. Note down the volume of iodine solution used. 1. Re-fill the burette to the 0.0 ml mark. Repeat the titration process 2 more times. Note down these two values for volume of iodine solution used as well. Calculate the average volume used. 1. Check that all the solutions that were heated (or cooled) have reached room temperature, with the help of a thermometer. 1. If they have reached room temperature, repeat the entire titration process (steps 18 – 24) with the other 4 solution (0Â °C, 30Â °C, 60Â °C and 90Â °C). Ensure that the burette is re-filled to the 0.0 ml mark after each and every titration, and that the pipette is first washed, and then rinsed with the solution that is going to be placed in the conical flask. 1. Use unitary method, to calculate the concentration of Vitamin C in each solution, after heating or cooling, using the concentration of the solution at room temperature (0.002 M) as the known value.

Waste management

Each of us will throw a lot of waste every day; you know where all the wastewent? Most of the waste will get sanitary landfill, incineration, composting and other sound processing in some areas with better waste management, while most places Just easy piled or landfill, this cause odour spread, soil and underground water get polluted. peopleare not only Just consuming a lot of resources, mass production, mass consumption of land, but also produced a lot of waste; this consequences will be unimaginable.This essay will demonstrate the definition of waste; waste lassification, recycling, processing and some other additional materials about waste power generation. Introduction Earth is our home, which provides us with the necessary environment and space for living; but with the rapid development of social economy and the urban population of highly concentrated, the output of waste is gradually increasing, our home is surrounded by garbage from day to day. In densely populated cities, was te disposal is a vexing problem.Common practice is collected and sent to landfills, or use incinerators; but both would create environmental problems, and excessive onsumption can further reduce termination landfills saturation level. Improper waste disposal in landfills can contaminate groundwater and odour, and many cities have been available for less and less landfill area. Produce poisonous gas, harmful organisms is inevitable forlncineration. Most of the cities are studying ways to reduce waste, and encourage recycling. Research Methodology Library Research: 1. Recording notes. 2. Content analysis. . Collect the needed information. Field Research: 1. Personal interview. 2. Groupmeeting. 3. Telephone survey. 4. Case study. The definition of waste Waste is also known as rubbish, trash, refuse, garbage, Junk and litter; which refer to unwanted or useless solid, fluid substance. Merriam-Websterdefineswaste is the trash from places of human or animal residence; The World Book Dictio nary also say that waste is the useless or worthless material, stuff to be discarded. Unfortunately, these two definitions reflect a common attitude that does not admit waste as a resource.Nevertheless, Zero Waste America defines waste as â€Å"a resource that is not safely recycled back into the environment or the marketplace. † This definition onsiders the value of waste as a resource, as well as the threat of unsafe recycling ‘wasting' actually does not exist in nature, they are human inventions due to human behaviour. ln nature, everything has a purpose. Waste was created by humans for short-term convenience and short-term profit. Meanwhile, this leads to long-term harmful consequences for humans, nature, and the economy.Waste classification, recycling and processing Waste classification means according to different composition, properties, use value of waste as well as the impact on the environment, andthe requirements of different isposal methods, divided into a n umber of different types of properties. lts purpose is to bring convenience for resource recovery and subsequent disposal. The meaning of the classification of waste People are faced with the situation of the growing waste production and environmental deterioration.How to through the waste classification managementto maximize waste resource utilization, reduce the amount of garbage disposaland improve the living quality of the environment is currently the world's pressing problems of common concern. Waste classification is the reform of the traditional ay to garbage collection disposed; it is aneffectivescientific management methodfor waste disposal. Waste classification is put waste classificationat source, and through the classification of the pickup and recycled back into a resource. The benefit of waste classification is obvious.After being classification, waste was sent to a factory instead of landfills, not only save the land, but also avoids the pollution produced by landfill or burned. Waste classification Recyclable waste They are mainly five categories which include waste paper, plastic, glass, metal, and cloth. Waste Paper: mainly includes newspapers, periodicals, books, all kinds of wrapping paper and so on; But should pay attention to paper towels and toilet paper because of their water soluble is too strong, cannot be recycled. Plastic: plastic waste containers, plastic packaging and other plastic products.Such as various plastic bags, plastic bottles, foam, disposable plastic lunch boxes cutlery, hard plastic and so on. Glass: mainly includes all kinds of glass bottles, pieces of broken glass, mirror, light bulb debris, and thermos bottle, etc. Metal: mainly includes cans, cans and so on. Fabric: mainly includes the abandoned clothes, tablecloths, towels, bags, shoes and so on. Kitchen waste Kitchen waste is refers to catering units, enterprises, institutions, schools, canteens and other food scrapswaste, commonly known as swillor pigwash.The ma in component of kitchen waste are starch, food fibre, animal fats and other organic substances; it have a high moisture content, fat, high salt content, perishable smelly fermentation characteristics. Hazardous waste Toxic and hazardous waste refers to the solids that could be harmful to human body ealth or toxic substances or cause real harm to the environment or potential hazards wastes. Including batteries, fluorescent tubes, light bulbs, mercury thermometers, paint bucket, home appliances, expired drugs, expired cosmetics.If the battery is burned, after the blast will be killing hundreds of people; Fluorescent tubes and bulbs are Just like the battery, radiation is also large; Mercury is more landfilling. Other rubbish Includingin addition to the above-mentioned categoriesgarbage, such as ceramictile, muck, toilet waste paper, paper towels and other difficult to recycle waste, usually ased on the characteristics and take the way of burning or burying garbage processing. Waste ma terials by kind, composition and sources.Kind Composition Sources Garbage Wastes from preparation, cooking, and serving of food; market wastes; wastes from handling, storage, and sale of produce Households, restaurants, institutions, stores, markets Rubbish Flammable: paper, cartons, boxes, barrels, wood, tree branches, yard trimmings, wood furniture, bedding, dunnage Inflammable: metals, tin cans, metal furniture, dirt, glass, crockery, minerals Ashes Residue from fires used for cooking and heating and from on-site burningStreet refuse Sweepings, dirt, leaves, catch basin dirt, contents of litter receptacles Streets, sidewalks, alleys, vacant lots Dead animals Cats, dogs, horses, cows Abandoned vehicles Unwanted cars and trucks left on public property Industrial wastes Food-processing wastes, boiler house cinders, lumber scraps, metal scraps. havings Factories, power plants Demolition wastes Lumber, pipes, brick, masonry, and other construction materials from razed buildings and ot her structures Demolition sites to be used for new buildings, renewal projects, expressways Construction wastes Scrap lumber, pipe, ther construction materials New construction, remodelling Special wastes Hazardous solids and liquids; explosives, pathological wastes, radioactive materials Households, hotels, hospitals, institutions, stores, industry Sewage treatment residue Solids from coarse screening and from grit chambers; septic tank sludge Sewage treatment plants; septic tanks Waste recycling and processing In the process of urbanization, the waste was once the burden of city development as the product of urban metabolism; many cities in the world have been besieged by garbage before. In now days, waste is considered to be the most potential, inexhaustible†urban mines† for development; it is the â€Å"misplaced resources†.Waste all have the corresponding recycling technology, make it can be used as â€Å"secondary sources† into the new production cycle , thus reducing resource consumption and environmental pollution. This is not only the in-depth and deep understanding of the waste, but also is the inevitable requirement of urban development. General city processed into organic compound fertilizer and used for landscaping or agricultural fertilizer in organic waste processing factory. 2. Dry waste (inorganic waste): further refined classified as waste paper, waste plastic, glass, scrap metal and other recyclable componentsin the garbage sorting centre, and then recycling plant for recyclingby thecorresponding. 3.Hazardous waste: recyclable materialssent to recycling after sorting in the hazardous waste sorting disposal station and the residue are safely landfill or incineration. Currently, there are several ways of waste disposal: 1. Landfill Method: Fill trash in the pit that has been ready for, make it automaticallyhappen biological, physical and chemical changes, decomposition of rganic matter, to achieve reduction and harmless purposes; but for a long time, most cities are carried out with open dumps and natural filling ditch without any protection. This leads to a lot of rubbish sewage from the surface into the ground and cause serious pollution of groundwater sources and the urban environment. Therefore this waste disposal method has gradually been eliminated. 2.Incineration method: incineration method is to put thegarbage into high temperature furnace; make one full oxidation of combustible ingredients; the heat that generated can be used for power generation and heating. The biggest shortcoming of this method is generatedof dioxin gas during the incineration; thereforefor achieving environmental protection, Therefore only on the incineration of toxic and harmful gases through a series of processing,this method can realize environmental protection. 3. Composting Method: piles of garbage accumulation, heat up to 70 C, storage, fermentation, with the ability of microbial decomposition in garbage, to dec ompose organic matter into inorganic nutrients.After composting treatment, garbage becomes hygienic, odourless humus. Not only way to solve the garbage, but lso to achieve the purpose of the resource; but the large amount of solid waste composting, nutrient content is low, long-term use could easily lead to soil compaction and deterioration of groundwater quality, so the scale is not easy to compost too. 4. Treatment resources: Careful classification of urban living garbage, Then according to the different nature of classified garbage after respectively adopt appropriate methods to deal with, make all the different types of waste can be utilized, thus to be truly achievereduction, harmless and resource of waste. Waste power generationFrom the 1970s onwards, some developed countries have started to use the heat generated by burning garbage to generate electricity. Some country in Europe built a garbage power plant, a U. S. garbage power plant generating capacity up to 100 MW, process ing 600 thousand tons of garbage per day. Now, garbage power plant in Germany is spendinga huge sum of money from abroad to buy rubbish every year. According to statistics, currently there are nearly a thousand types of waste disposal plant; all kinds of garbage utilization facility will be increased to 3000 or more in hree years. Scientists measure that the garbage in the secondary energy, such as organic fuelcontains high calorific value, the heat of burning 2 tons of wasteequivalent to about 1 tons of coal.Confrontingproblem The reason that why waste power generation is developing slowly Is mainly due to the combustionpower generation, which cannot be effectively solve for a long time. Japan has been promoting a super waste power generation technology, by using new gas furnace; rose the furnace temperature to 500 ‘C, increase the power generation fficiency from 10% in the pastto around 25%, reduced toxic emissions to less than 0. 5%, below the international standard; But, o f course, the cost of waste power generation is still higher than the traditional thermal power. Some experts believe that withthe technology development inwaste collection, handling, transport, utilization and other aspects, waste power generation is likely to become one of the most economical power generation technologies.From the long-term benefits and the comprehensive index, it will be superior to the traditional electric power production. Conclusion In conclusion, waste is a common issue; this can lead to health problems and destruction of natural resources. If people do not attach importance to waste classification and recycling, not only for our present life will be affected, but also for our future generations. This is not Just a country, an organization, an individual's responsibility, but the responsibility of all mankind. lf when each person throwing garbage can be a little more environmental awareness, we could effectively increase the waste comprehensive utilization, S o that the whole society will be able to less affect by waste problems. Waste Management Introduction: Rapid urbanisation and industrial diversification has led to generation of considerable amount of municipal, plastic, hazardous and biomedical waste. Improper disposal of wastes often leads to spread of diseases and contamination of water bodies and soil. The impact of these wastes cannot be ignored and managing them has become a major problem. The objective and scope of this research project: In this project we have tried to gain an insight on the term waste management. The objective of the project was to seek an overview of waste management in large cities especially in supermarkets and predominantly the waste disposal system of large fast food outlets in Bangalore. The scope was (due to time constraint) limited to two major food chains. We have as an initial investigation tried to bring out the very nature of major sources of waste in our cities, the present waste disposal system in Bangalore and measures to effectively dispose off the waste generated in supermarkets. Municipal solid waste: On an average 40-50% of the total municipal waste is generated in the six municipal corporations of Karnataka and more than 70 percent of municipal waste is generated in the residential and market areas. The domestic waste generated by the households comprises mainly of organic, plastic and paper waste. Problems of municipal solid waste: The major problems of municipal solid waste are: †¢Collection and storage of waste. Mixing and segregation of waste. †¢Transportation of waste. †¢Indiscriminate burning of waste †¢Illegal disposal of waste. 1. Collection and storage of waste: waste collection and disposal lies at the core of municipal waste management. Waste management happens to be the major source of expenditure in municipal budgets. Failure to effectively manage waste generated in the cities leads to overflowing bins and foul odour in the city streets. It also poses as a potential threat to the hygiene and health of the public. 2. Mixing and segregation of waste: with no clear instruction and procedures to the contrary the household waste generated are very heterogeneous in nature due to no or very limited segregation of waste during disposal process. It also is witnessed in industrial wastes. Where lack of government regulation leads to uncontrolled disposal without proper segregation. 3. Transportation of waste: the rapid expansion of cities coupled with high population growth rates and limited control on procedures to dispose municipal wastes resulted in mismatch on guidelines and actual waste transport. The transporters of municipal wastes are normally private contractors who with the aim of profit maximisation tend to dispose waste in the nearest vacant plots just on the outskirts of the city. Though dumping zones have been identified around the city yet the transporters often resort to dumping on plots near main roads leading to the city. 4. Indiscriminate burning of wastes: often as discussed above the transporters do not dump the wastes on designated land fills earmarked by municiapal bodies but on the roads leading to the cities or vacant plots on the outskirts of the city they also resort to burning of wastes to reduce the heap for future dumping. As the waste dumped are unsorted and contain many hazardous substances eg plastics bottles and polythene bags. The gas generated are toxic in nature and a common sight are the rag pickers who roam around such dump sites to collect materials of some worth. They are effected by the smoke and the gas generated. 5. Illegal disposal of waste: in absence of strict guidelines and enforcement of proper disposal of wastes in major cities in India the transporters mainly the private contractors resort to dumping of wastes in vacant plots instead of disposing them to proper dumping sites. This results over a period of time a major ecological threat. E. g a recent study found that in Bangalore around 600 Tons of municipal wastes are illegally dumped on vacant plots on daily basis. Waste Management The Securities and Exchange Commission has filed suit against the founder and five other former top officers of Waste Management Inc. for massive fraud. The complaint charges the defendants with inflating profits to meet earnings targets. The officers named in the complaint include the following: * The CEO, who set earnings targets, fostered a culture of fraudulent accounting, personally directed certain of the accounting changes to make the targeted earnings, and was the spokesperson who announced the company's phony numbers. The CFO, who ordered the destruction of damaging evidence, misled the company's audit committee and internal accountants, and withheld information from the outside auditors. * The corporate controller, who devised many â€Å"one-off† accounting manipulations to deliver the targeted earnings and carefully crafted the deceptive disclosures. * The general counsel, who blessed the company's fraudulent disclosures. In brief, the complaint says the company's revenues were not growing fast enough to meet its earnings targets, so the defendants instead resorted to improperly eliminating and deferring current period expenses. Specific tactics: * Avoiding depreciation expenses on their garbage trucks by both assigning unsupported and inflated salvage values and extending their useful lives. * Assigning arbitrary salvage values to other assets that previously had no salvage value. * Failing to record expenses for decreases in the value of landfills as they were filled with waste. * Refusing to record expenses necessary to write off the costs of unsuccessful and abandoned landfill development projects. Establishing inflated environmental reserves (liabilities) in connection with acquisitions so that the excess reserves could be used to avoid recording unrelated operating expenses. * Improperly capitalizing a variety of expenses, and failing to establish sufficient reserves (liabilities) to pay for income taxes and other expenses. The SEC says Andersen, the company’s auditor, identified the improper accounting practices, quantified much of the impact, and annually presented company management with a set of â€Å"Proposed Adjusting Journal Entries. Instead of making the adjustments, management signed off on a â€Å"Summary of Action Steps† that the SEC says included steps designed to write off the accumulated errors and to change the underlying accounting practices in future periods The company had augmented the depreciation time length for their property, plant, and equipment, artificially inflating the company's after-tax profits by US$1. 7 billion. Waste Management paid US$457 million to settle a shareholder class-action suit. The SEC fined Waste Management's independent auditor, Arthur Andersen, US$7 million for their role. Waste management Each of us will throw a lot of waste every day; you know where all the wastewent? Most of the waste will get sanitary landfill, incineration, composting and other sound processing in some areas with better waste management, while most places Just easy piled or landfill, this cause odour spread, soil and underground water get polluted. peopleare not only Just consuming a lot of resources, mass production, mass consumption of land, but also produced a lot of waste; this consequences will be unimaginable.This essay will demonstrate the definition of waste; waste lassification, recycling, processing and some other additional materials about waste power generation. Introduction Earth is our home, which provides us with the necessary environment and space for living; but with the rapid development of social economy and the urban population of highly concentrated, the output of waste is gradually increasing, our home is surrounded by garbage from day to day. In densely populated cities, was te disposal is a vexing problem.Common practice is collected and sent to landfills, or use incinerators; but both would create environmental problems, and excessive onsumption can further reduce termination landfills saturation level. Improper waste disposal in landfills can contaminate groundwater and odour, and many cities have been available for less and less landfill area. Produce poisonous gas, harmful organisms is inevitable forlncineration. Most of the cities are studying ways to reduce waste, and encourage recycling. Research Methodology Library Research: 1. Recording notes. 2. Content analysis. . Collect the needed information. Field Research: 1. Personal interview. 2. Groupmeeting. 3. Telephone survey. 4. Case study. The definition of waste Waste is also known as rubbish, trash, refuse, garbage, Junk and litter; which refer to unwanted or useless solid, fluid substance. Merriam-Websterdefineswaste is the trash from places of human or animal residence; The World Book Dictio nary also say that waste is the useless or worthless material, stuff to be discarded. Unfortunately, these two definitions reflect a common attitude that does not admit waste as a resource.Nevertheless, Zero Waste America defines waste as â€Å"a resource that is not safely recycled back into the environment or the marketplace. † This definition onsiders the value of waste as a resource, as well as the threat of unsafe recycling ‘wasting' actually does not exist in nature, they are human inventions due to human behaviour. ln nature, everything has a purpose. Waste was created by humans for short-term convenience and short-term profit. Meanwhile, this leads to long-term harmful consequences for humans, nature, and the economy.Waste classification, recycling and processing Waste classification means according to different composition, properties, use value of waste as well as the impact on the environment, andthe requirements of different isposal methods, divided into a n umber of different types of properties. lts purpose is to bring convenience for resource recovery and subsequent disposal. The meaning of the classification of waste People are faced with the situation of the growing waste production and environmental deterioration.How to through the waste classification managementto maximize waste resource utilization, reduce the amount of garbage disposaland improve the living quality of the environment is currently the world's pressing problems of common concern. Waste classification is the reform of the traditional ay to garbage collection disposed; it is aneffectivescientific management methodfor waste disposal. Waste classification is put waste classificationat source, and through the classification of the pickup and recycled back into a resource. The benefit of waste classification is obvious.After being classification, waste was sent to a factory instead of landfills, not only save the land, but also avoids the pollution produced by landfill or burned. Waste classification Recyclable waste They are mainly five categories which include waste paper, plastic, glass, metal, and cloth. Waste Paper: mainly includes newspapers, periodicals, books, all kinds of wrapping paper and so on; But should pay attention to paper towels and toilet paper because of their water soluble is too strong, cannot be recycled. Plastic: plastic waste containers, plastic packaging and other plastic products.Such as various plastic bags, plastic bottles, foam, disposable plastic lunch boxes cutlery, hard plastic and so on. Glass: mainly includes all kinds of glass bottles, pieces of broken glass, mirror, light bulb debris, and thermos bottle, etc. Metal: mainly includes cans, cans and so on. Fabric: mainly includes the abandoned clothes, tablecloths, towels, bags, shoes and so on. Kitchen waste Kitchen waste is refers to catering units, enterprises, institutions, schools, canteens and other food scrapswaste, commonly known as swillor pigwash.The ma in component of kitchen waste are starch, food fibre, animal fats and other organic substances; it have a high moisture content, fat, high salt content, perishable smelly fermentation characteristics. Hazardous waste Toxic and hazardous waste refers to the solids that could be harmful to human body ealth or toxic substances or cause real harm to the environment or potential hazards wastes. Including batteries, fluorescent tubes, light bulbs, mercury thermometers, paint bucket, home appliances, expired drugs, expired cosmetics.If the battery is burned, after the blast will be killing hundreds of people; Fluorescent tubes and bulbs are Just like the battery, radiation is also large; Mercury is more landfilling. Other rubbish Includingin addition to the above-mentioned categoriesgarbage, such as ceramictile, muck, toilet waste paper, paper towels and other difficult to recycle waste, usually ased on the characteristics and take the way of burning or burying garbage processing. Waste ma terials by kind, composition and sources.Kind Composition Sources Garbage Wastes from preparation, cooking, and serving of food; market wastes; wastes from handling, storage, and sale of produce Households, restaurants, institutions, stores, markets Rubbish Flammable: paper, cartons, boxes, barrels, wood, tree branches, yard trimmings, wood furniture, bedding, dunnage Inflammable: metals, tin cans, metal furniture, dirt, glass, crockery, minerals Ashes Residue from fires used for cooking and heating and from on-site burningStreet refuse Sweepings, dirt, leaves, catch basin dirt, contents of litter receptacles Streets, sidewalks, alleys, vacant lots Dead animals Cats, dogs, horses, cows Abandoned vehicles Unwanted cars and trucks left on public property Industrial wastes Food-processing wastes, boiler house cinders, lumber scraps, metal scraps. havings Factories, power plants Demolition wastes Lumber, pipes, brick, masonry, and other construction materials from razed buildings and ot her structures Demolition sites to be used for new buildings, renewal projects, expressways Construction wastes Scrap lumber, pipe, ther construction materials New construction, remodelling Special wastes Hazardous solids and liquids; explosives, pathological wastes, radioactive materials Households, hotels, hospitals, institutions, stores, industry Sewage treatment residue Solids from coarse screening and from grit chambers; septic tank sludge Sewage treatment plants; septic tanks Waste recycling and processing In the process of urbanization, the waste was once the burden of city development as the product of urban metabolism; many cities in the world have been besieged by garbage before. In now days, waste is considered to be the most potential, inexhaustible†urban mines† for development; it is the â€Å"misplaced resources†.Waste all have the corresponding recycling technology, make it can be used as â€Å"secondary sources† into the new production cycle , thus reducing resource consumption and environmental pollution. This is not only the in-depth and deep understanding of the waste, but also is the inevitable requirement of urban development. General city processed into organic compound fertilizer and used for landscaping or agricultural fertilizer in organic waste processing factory. 2. Dry waste (inorganic waste): further refined classified as waste paper, waste plastic, glass, scrap metal and other recyclable componentsin the garbage sorting centre, and then recycling plant for recyclingby thecorresponding. 3.Hazardous waste: recyclable materialssent to recycling after sorting in the hazardous waste sorting disposal station and the residue are safely landfill or incineration. Currently, there are several ways of waste disposal: 1. Landfill Method: Fill trash in the pit that has been ready for, make it automaticallyhappen biological, physical and chemical changes, decomposition of rganic matter, to achieve reduction and harmless purposes; but for a long time, most cities are carried out with open dumps and natural filling ditch without any protection. This leads to a lot of rubbish sewage from the surface into the ground and cause serious pollution of groundwater sources and the urban environment. Therefore this waste disposal method has gradually been eliminated. 2.Incineration method: incineration method is to put thegarbage into high temperature furnace; make one full oxidation of combustible ingredients; the heat that generated can be used for power generation and heating. The biggest shortcoming of this method is generatedof dioxin gas during the incineration; thereforefor achieving environmental protection, Therefore only on the incineration of toxic and harmful gases through a series of processing,this method can realize environmental protection. 3. Composting Method: piles of garbage accumulation, heat up to 70 C, storage, fermentation, with the ability of microbial decomposition in garbage, to dec ompose organic matter into inorganic nutrients.After composting treatment, garbage becomes hygienic, odourless humus. Not only way to solve the garbage, but lso to achieve the purpose of the resource; but the large amount of solid waste composting, nutrient content is low, long-term use could easily lead to soil compaction and deterioration of groundwater quality, so the scale is not easy to compost too. 4. Treatment resources: Careful classification of urban living garbage, Then according to the different nature of classified garbage after respectively adopt appropriate methods to deal with, make all the different types of waste can be utilized, thus to be truly achievereduction, harmless and resource of waste. Waste power generationFrom the 1970s onwards, some developed countries have started to use the heat generated by burning garbage to generate electricity. Some country in Europe built a garbage power plant, a U. S. garbage power plant generating capacity up to 100 MW, process ing 600 thousand tons of garbage per day. Now, garbage power plant in Germany is spendinga huge sum of money from abroad to buy rubbish every year. According to statistics, currently there are nearly a thousand types of waste disposal plant; all kinds of garbage utilization facility will be increased to 3000 or more in hree years. Scientists measure that the garbage in the secondary energy, such as organic fuelcontains high calorific value, the heat of burning 2 tons of wasteequivalent to about 1 tons of coal.Confrontingproblem The reason that why waste power generation is developing slowly Is mainly due to the combustionpower generation, which cannot be effectively solve for a long time. Japan has been promoting a super waste power generation technology, by using new gas furnace; rose the furnace temperature to 500 ‘C, increase the power generation fficiency from 10% in the pastto around 25%, reduced toxic emissions to less than 0. 5%, below the international standard; But, o f course, the cost of waste power generation is still higher than the traditional thermal power. Some experts believe that withthe technology development inwaste collection, handling, transport, utilization and other aspects, waste power generation is likely to become one of the most economical power generation technologies.From the long-term benefits and the comprehensive index, it will be superior to the traditional electric power production. Conclusion In conclusion, waste is a common issue; this can lead to health problems and destruction of natural resources. If people do not attach importance to waste classification and recycling, not only for our present life will be affected, but also for our future generations. This is not Just a country, an organization, an individual's responsibility, but the responsibility of all mankind. lf when each person throwing garbage can be a little more environmental awareness, we could effectively increase the waste comprehensive utilization, S o that the whole society will be able to less affect by waste problems. Waste management Each of us will throw a lot of waste every day; you know where all the wastewent? Most of the waste will get sanitary landfill, incineration, composting and other sound processing in some areas with better waste management, while most places Just easy piled or landfill, this cause odour spread, soil and underground water get polluted. peopleare not only Just consuming a lot of resources, mass production, mass consumption of land, but also produced a lot of waste; this consequences will be unimaginable.This essay will demonstrate the definition of waste; waste lassification, recycling, processing and some other additional materials about waste power generation. Introduction Earth is our home, which provides us with the necessary environment and space for living; but with the rapid development of social economy and the urban population of highly concentrated, the output of waste is gradually increasing, our home is surrounded by garbage from day to day. In densely populated cities, was te disposal is a vexing problem.Common practice is collected and sent to landfills, or use incinerators; but both would create environmental problems, and excessive onsumption can further reduce termination landfills saturation level. Improper waste disposal in landfills can contaminate groundwater and odour, and many cities have been available for less and less landfill area. Produce poisonous gas, harmful organisms is inevitable forlncineration. Most of the cities are studying ways to reduce waste, and encourage recycling. Research Methodology Library Research: 1. Recording notes. 2. Content analysis. . Collect the needed information. Field Research: 1. Personal interview. 2. Groupmeeting. 3. Telephone survey. 4. Case study. The definition of waste Waste is also known as rubbish, trash, refuse, garbage, Junk and litter; which refer to unwanted or useless solid, fluid substance. Merriam-Websterdefineswaste is the trash from places of human or animal residence; The World Book Dictio nary also say that waste is the useless or worthless material, stuff to be discarded. Unfortunately, these two definitions reflect a common attitude that does not admit waste as a resource.Nevertheless, Zero Waste America defines waste as â€Å"a resource that is not safely recycled back into the environment or the marketplace. † This definition onsiders the value of waste as a resource, as well as the threat of unsafe recycling ‘wasting' actually does not exist in nature, they are human inventions due to human behaviour. ln nature, everything has a purpose. Waste was created by humans for short-term convenience and short-term profit. Meanwhile, this leads to long-term harmful consequences for humans, nature, and the economy.Waste classification, recycling and processing Waste classification means according to different composition, properties, use value of waste as well as the impact on the environment, andthe requirements of different isposal methods, divided into a n umber of different types of properties. lts purpose is to bring convenience for resource recovery and subsequent disposal. The meaning of the classification of waste People are faced with the situation of the growing waste production and environmental deterioration.How to through the waste classification managementto maximize waste resource utilization, reduce the amount of garbage disposaland improve the living quality of the environment is currently the world's pressing problems of common concern. Waste classification is the reform of the traditional ay to garbage collection disposed; it is aneffectivescientific management methodfor waste disposal. Waste classification is put waste classificationat source, and through the classification of the pickup and recycled back into a resource. The benefit of waste classification is obvious.After being classification, waste was sent to a factory instead of landfills, not only save the land, but also avoids the pollution produced by landfill or burned. Waste classification Recyclable waste They are mainly five categories which include waste paper, plastic, glass, metal, and cloth. Waste Paper: mainly includes newspapers, periodicals, books, all kinds of wrapping paper and so on; But should pay attention to paper towels and toilet paper because of their water soluble is too strong, cannot be recycled. Plastic: plastic waste containers, plastic packaging and other plastic products.Such as various plastic bags, plastic bottles, foam, disposable plastic lunch boxes cutlery, hard plastic and so on. Glass: mainly includes all kinds of glass bottles, pieces of broken glass, mirror, light bulb debris, and thermos bottle, etc. Metal: mainly includes cans, cans and so on. Fabric: mainly includes the abandoned clothes, tablecloths, towels, bags, shoes and so on. Kitchen waste Kitchen waste is refers to catering units, enterprises, institutions, schools, canteens and other food scrapswaste, commonly known as swillor pigwash.The ma in component of kitchen waste are starch, food fibre, animal fats and other organic substances; it have a high moisture content, fat, high salt content, perishable smelly fermentation characteristics. Hazardous waste Toxic and hazardous waste refers to the solids that could be harmful to human body ealth or toxic substances or cause real harm to the environment or potential hazards wastes. Including batteries, fluorescent tubes, light bulbs, mercury thermometers, paint bucket, home appliances, expired drugs, expired cosmetics.If the battery is burned, after the blast will be killing hundreds of people; Fluorescent tubes and bulbs are Just like the battery, radiation is also large; Mercury is more landfilling. Other rubbish Includingin addition to the above-mentioned categoriesgarbage, such as ceramictile, muck, toilet waste paper, paper towels and other difficult to recycle waste, usually ased on the characteristics and take the way of burning or burying garbage processing. Waste ma terials by kind, composition and sources.Kind Composition Sources Garbage Wastes from preparation, cooking, and serving of food; market wastes; wastes from handling, storage, and sale of produce Households, restaurants, institutions, stores, markets Rubbish Flammable: paper, cartons, boxes, barrels, wood, tree branches, yard trimmings, wood furniture, bedding, dunnage Inflammable: metals, tin cans, metal furniture, dirt, glass, crockery, minerals Ashes Residue from fires used for cooking and heating and from on-site burningStreet refuse Sweepings, dirt, leaves, catch basin dirt, contents of litter receptacles Streets, sidewalks, alleys, vacant lots Dead animals Cats, dogs, horses, cows Abandoned vehicles Unwanted cars and trucks left on public property Industrial wastes Food-processing wastes, boiler house cinders, lumber scraps, metal scraps. havings Factories, power plants Demolition wastes Lumber, pipes, brick, masonry, and other construction materials from razed buildings and ot her structures Demolition sites to be used for new buildings, renewal projects, expressways Construction wastes Scrap lumber, pipe, ther construction materials New construction, remodelling Special wastes Hazardous solids and liquids; explosives, pathological wastes, radioactive materials Households, hotels, hospitals, institutions, stores, industry Sewage treatment residue Solids from coarse screening and from grit chambers; septic tank sludge Sewage treatment plants; septic tanks Waste recycling and processing In the process of urbanization, the waste was once the burden of city development as the product of urban metabolism; many cities in the world have been besieged by garbage before. In now days, waste is considered to be the most potential, inexhaustible†urban mines† for development; it is the â€Å"misplaced resources†.Waste all have the corresponding recycling technology, make it can be used as â€Å"secondary sources† into the new production cycle , thus reducing resource consumption and environmental pollution. This is not only the in-depth and deep understanding of the waste, but also is the inevitable requirement of urban development. General city processed into organic compound fertilizer and used for landscaping or agricultural fertilizer in organic waste processing factory. 2. Dry waste (inorganic waste): further refined classified as waste paper, waste plastic, glass, scrap metal and other recyclable componentsin the garbage sorting centre, and then recycling plant for recyclingby thecorresponding. 3.Hazardous waste: recyclable materialssent to recycling after sorting in the hazardous waste sorting disposal station and the residue are safely landfill or incineration. Currently, there are several ways of waste disposal: 1. Landfill Method: Fill trash in the pit that has been ready for, make it automaticallyhappen biological, physical and chemical changes, decomposition of rganic matter, to achieve reduction and harmless purposes; but for a long time, most cities are carried out with open dumps and natural filling ditch without any protection. This leads to a lot of rubbish sewage from the surface into the ground and cause serious pollution of groundwater sources and the urban environment. Therefore this waste disposal method has gradually been eliminated. 2.Incineration method: incineration method is to put thegarbage into high temperature furnace; make one full oxidation of combustible ingredients; the heat that generated can be used for power generation and heating. The biggest shortcoming of this method is generatedof dioxin gas during the incineration; thereforefor achieving environmental protection, Therefore only on the incineration of toxic and harmful gases through a series of processing,this method can realize environmental protection. 3. Composting Method: piles of garbage accumulation, heat up to 70 C, storage, fermentation, with the ability of microbial decomposition in garbage, to dec ompose organic matter into inorganic nutrients.After composting treatment, garbage becomes hygienic, odourless humus. Not only way to solve the garbage, but lso to achieve the purpose of the resource; but the large amount of solid waste composting, nutrient content is low, long-term use could easily lead to soil compaction and deterioration of groundwater quality, so the scale is not easy to compost too. 4. Treatment resources: Careful classification of urban living garbage, Then according to the different nature of classified garbage after respectively adopt appropriate methods to deal with, make all the different types of waste can be utilized, thus to be truly achievereduction, harmless and resource of waste. Waste power generationFrom the 1970s onwards, some developed countries have started to use the heat generated by burning garbage to generate electricity. Some country in Europe built a garbage power plant, a U. S. garbage power plant generating capacity up to 100 MW, process ing 600 thousand tons of garbage per day. Now, garbage power plant in Germany is spendinga huge sum of money from abroad to buy rubbish every year. According to statistics, currently there are nearly a thousand types of waste disposal plant; all kinds of garbage utilization facility will be increased to 3000 or more in hree years. Scientists measure that the garbage in the secondary energy, such as organic fuelcontains high calorific value, the heat of burning 2 tons of wasteequivalent to about 1 tons of coal.Confrontingproblem The reason that why waste power generation is developing slowly Is mainly due to the combustionpower generation, which cannot be effectively solve for a long time. Japan has been promoting a super waste power generation technology, by using new gas furnace; rose the furnace temperature to 500 ‘C, increase the power generation fficiency from 10% in the pastto around 25%, reduced toxic emissions to less than 0. 5%, below the international standard; But, o f course, the cost of waste power generation is still higher than the traditional thermal power. Some experts believe that withthe technology development inwaste collection, handling, transport, utilization and other aspects, waste power generation is likely to become one of the most economical power generation technologies.From the long-term benefits and the comprehensive index, it will be superior to the traditional electric power production. Conclusion In conclusion, waste is a common issue; this can lead to health problems and destruction of natural resources. If people do not attach importance to waste classification and recycling, not only for our present life will be affected, but also for our future generations. This is not Just a country, an organization, an individual's responsibility, but the responsibility of all mankind. lf when each person throwing garbage can be a little more environmental awareness, we could effectively increase the waste comprehensive utilization, S o that the whole society will be able to less affect by waste problems.

Respective culture Essay

‘The Gold Cadillac’ can be seen as quite similar to ‘A Stench Of Kerosene; where the mother appears powerful as Dee has the power to stand up to her husband. This is portrayed after Wilbert has just brought the new car and Dee says: ‘That Mercury wasn’t even a year old’. And when she refuses to ride in the car: ‘ †¦mother refused to ride anywhere’. From Dee’s character we get the impression that she has power not only as a mother but also as a woman. However in Pritam’s story only mothers have the power and only mothers and wives are respected in society because they are believed to be the women’s roles in society. This is shown in ‘A Stench Of Kerosene’ where Manak’s mother is referred to only as Manak’s mother giving us the impression that she is only considered as a mother in society and nothing more. By calling her this she is being robbed of her identity, individuality and in some ways of her freedom. On the other hand in ‘The Gold Cadillac’ it seems that even black women have power which is surprising as when this story is set there were many racist states in America. We get this impression from when the mother is constantly referred to as Dee giving her, her own personal identity and not limiting her to her role as a mother or as a wife like Manak’s second wife who we only know as Manak’s second wife. At the start of the story the father Wilbert is completely against the idea of selling his car. However, by the end of his story he has had a change of heart and decides to sell the car. This is a very surprising change in his attitude, considering his attachment to the car at the start of the story. His decision may be down to fear, which his daughter was put through whilst riding in the golden Cadillac and how much of a risk he realised they were all at after being arrested by the police: ‘driving this car any further south with you girls in the car, it’s just not worth the risk’. This could be seen as similar to ‘A Stench Of Kerosene’ in the sense that Manak’s mother is concerned about what is best for him just like Wilbert and Dee are concerned about what is best for their two daughters. In these short stories both authors show different approaches to the prejudice issues of different cultures. In ‘ The Golden Cadillac’ Taylor shows us this by telling the story through the eyes of an innocent and confused little girl. By doing this Taylor makes the effectiveness of racism all the more clear to the reader. In ‘A Stench Of Kerosene’ Pritam uses a completely different approach. She shows how women are not treated equally through Manak’s treatment of Guleri. She also shows how women are not treated fairly through Manak’s second bride, she is bought by Manak’s mother, Manak does not love her and it is as though she is a piece of property. Also Manak’s mother does not seem to care if she hurts Guleri or the second bride as long as her son benefits from it. Guleri feels betrayed as she was in love with Manak and he took a second bride, which is why she kills herself. In these short stories two very different cultures are displayed. In ‘A Stench Of Kerosene’ we see an Indian matriarchal society where mothers have the most power within their families. We also see that the women who are not married or mothers do not have much power. In ‘ The Gold Cadillac’ we see that the story is set in America where it appears at first that black people have equal rights. However, it is clear that in the south they do not. We also see that mothers have the freedom to challenge the decisions of their husbands and are respected just like all the men. The ways in which the two stories are set are similar. ‘ A Stench Of Kerosene’ is set in India; we get the impression that people get on well in this society. However, as the story progresses we realise the disadvantages faced by women. We are similarly misled in ‘ The Gold Cadillac’ in fact it is not immediately that the family in the story is black until we get further into the story. At first we think that black people are equals in society until the family travels into the south and receives much discrimination. In both of the stories ‘The Gold Cadillac’ and ‘A Stench Of Kerosene’, the authors Mildred Taylor and Amrita Pritam attempt to convey the harsh realities of their respective culture. In Pritam’s story women are not always treated as equals and in this case they are not respected unless they are married or are mothers. In Taylor’s story she is attempting to show us that in America black people have not always been treated as equals. In each case the authors appear to be pitiful of the ways in which women and black people are belittled in society. We as the readers are shown this through the strong imagery, brevity of structure and the narrative impact. Both authors give us meaning and the reader is left with a wider knowledge of how culture informs the way in which people are treated depending on race and gender.

The Mono Tale Of The Hero s Journey - 1549 Words

A Story within a Story In our current society, literacy is defined as the ability to read and write. Though this is a common trait among individuals in our society, it is one that I view unique to every individual who had the opportunity to obtain it. I will retell my literacy journey in a way that encompasses one of my favorite theories in writing, the mono-tale of the Hero’s Journey by Joseph Campbell. This theory states that the Hero’s journey is a pattern in a narrative that forms the basic template of all great stories (Gunn 1). Call to adventure My childhood has revolved in the same area. Born on the 7th of the 7th month of the year 1997 at 7:37pm at a hospital seven minutes away from where my parents resided I never considered myself special in any way. The first years of my life were a blur of memories reinforced with photographic evidence whilst containing vivid recollections of key events. Like most, I cannot recall the first words I said, nor how I came to understand the languages spoken back home all I know is that words came. Threshold/ the beginning of transformations One, Achiel, Mmoja, Two, Ariyo, Mbili, Three, Adek, Tatu, Four, Ang wen, Nne , Five, Abich, Tano Six, Auchiel, Sita, Seven, Abiriyo, Saba, Eight, Aboro, Nane, Nine, Achiko, Tisa, Ten, Apar, Kumi. Learning how to count in four different languages (the fourth as a song) is one of my earliest memories which I can still recall. I have a minimal recollection of how I learned to read apart from theShow MoreRelatedSituational Analysis: 7th Grade Language Arts6569 Words   |  26 Pagesexplain historical events. To teach moral lessons. Tales of the hero and the heroic quest occur in nearly every world culture. If we look closely at the hero tales from all over the world and compare them, we find what the American mythologist Joseph Campbell called the mono-myth - literally, the one story. This mono-myth, or archetypal heroic quest story, has remarkably the same structure from culture to culture, but is really the same hero underneath, facing the same kinds of challenges. Today

Poverty and Children in the United States Essay - 2019 Words

Abstract The United States is the richest nation, yet millions of Americans live below the poverty line and millions more struggle every month. The children in society today living in poverty is increasing daily. The majority of these children are from single-parent homes where sometimes parents are not working or have become disabled and therefore cannot work. Children who are raised in foster care and leave as adults do not have strong relationship ties most of the time and are at an increased risk for experiencing poverty, early parenthood and homelessness (American School Board Journal, 2007). The reason for most of the poverty in the United States is due to low family incomes. Poverty is a disease. A disease that clogs†¦show more content†¦Some of these children also do not have access to vaccines that can keep them safe; therefore potentially possibly harming other children around them and getting them sick. Most children in poverty will drop out before high school, or if they make it that far will graduate functionally illiterate. If only our society was able to find a cure for poverty. Such as taking all the money from organizations to help save the wetlands around some communities close to the ocean and put that money instead towards programs aimed at children. There has to possibly be some programs that can be expelled to help those children in need who are living on our street and needing to be taken care of. Families who live in poverty do not have a choice about where they are living, or who their neighbors are. They do not have the option to pick up and move to avoid the struggles that poverty brings. Imagine having to listen to c hildren scream and cry from hunger pains and realizing there is no food to feed them. Imagine children sleeping in the middle of winter with no heat to keep them warm. This is life for those families living in poverty. These are just some of the small daily struggles they live with on a daily basis. There are many programs our government has put in place to help with Poverty, such as Opportunity NTC. This two-year pilot program attempts to reduce poverty by rewarding good behavior with cash (Cities Guide Ââ€" New York, 2007). There is money awarded toShow MoreRelatedPoverty and Children in the United States1787 Words   |  8 PagesPoverty and children in the United States Poverty by definition means: â€Å"State of being poor. The state of not having enough money to take care of basic needs such as food, clothing, and housing.† (Encarta dictionary) That is a word that many of us ignore, yet poverty among children in the United States is problem that is not going to solve itself. People today are not concerned with the troubles of others like they were in the late 1800’s and early 1900’s. Communities back then looked out for eachRead MoreRisk Factors Associated With Poverty1541 Words   |  7 Pages Poverty involves a complex array of risk factors that harmfully affects the population in a multitude of ways. The primary risk factors commonly associated with families living in poverty are emotional and social challenges, acute and chronic stressors, cognitive delays, and health related issues (Jensen, 2009). The culmination of risk factors make everyday life in poverty a struggle. Those risk factors are interwoven and comprehensive, often leading to devastatingly adverse effects. Jensen (2009)Read MorePoverty Is A Global Issue1448 Words   |  6 PagesPoverty is a global issue known by many people, it affects people in many ways, and can be considered a constant battle. The war on poverty has been ongoing for many years not only in the United States, but also amongst various countries. A significant country dealing with poverty is South Africa, which has struggled to provide jobs, education, and social security, to its people for numerous years. Moreover, the same applies to co untries like the United States. Our first impression is that the UnitedRead MorePoverty Is A Major Problem All Over The World1600 Words   |  7 PagesPoverty is a major problem all over the world. When looking at poverty in certain regions it has been determined that it is also a major problem within the United States. The first thing to determine is the definition of poverty as defined by the United States government. Next, a discussion over the scope of poverty in the United States, Missouri, Kansas City, and Jackson County. Then, a consideration over contributing factors of poverty as it currently exists in the United States. FollowedRead MoreSocial Welfare Vs. The Market958 Words   |  4 PagesThere are many reasons why individuals live in poverty. Such as drug addiction, lack of education, Unaffordable housing, criminal record, and alcohol addiction. These issues cripple our country continuously. â€Å"Poverty is not anyone persons decision. Parents do not wake up one day and just decide not to feed their family or pay bills. Poverty is a state when individual’s essential needs are not satisfied, Such as healthcare, education, food, and housing which are the main components to survive everydayRead MoreThe Issue Of Income Inequality Essay1496 Words   |  6 PagesOne of the most deeply divisive issues in the United States is the question of income inequality: whether it exists and whether we are obliged to address it. The â€Å"American Dream† ideology which permeates most aspects of our daily life, influences an automatic response to income inequality to be that those at the bottom are not working hard enough and that those at the top have earned their wealth through hard work. These perceptions of poverty and inequality limit productive conversation that canRead MoreThe, Land Of Opportunities By James Truslow Adams1553 Words   |  7 PagesThe United States of America is often known as the â€Å"Land of Opportunities.† James Truslow Adams in 1931 wrote a book titled The Epic of Am erica, and in it stated [the American Dream is a] dream of a land in which life should be better and richer and fuller for everyone, with opportunity for each according to ability or achievement†¦ [It is] a dream of social order in which each man and each woman shall be able †¦ [to] be recognized by others for what they are, regardless of the fortuitous circumstancesRead MoreUnited States Vs. Brazil901 Words   |  4 PagesUnited States vs. Brazil Child Poverty Poverty is where one person or a group of people don’t have enough money and recourses to meet needs that are considered acceptable in the general public. Although there has been effort to prevent poverty, it is still rampant around the world. 3 billion people live on less than $2.50 a day while 1.3 billion of those people live on less than $1.50 a day. Poverty also affects children. Every 4 seconds a child dies of poverty. 1 billion children live in povertyRead MorePoverty Of The United States907 Words   |  4 PagesHonors English II - 1 April 29, 2016 Child Poverty in the United States In the United States, about 24 million children live in poverty (Ingraham). Poverty is a big issue and has been for a while. It can affect children now and when they become adults. There are children going to bed hungry, not knowing where their next meal is coming from, but Compassion is a Christian organization working to stop child poverty around the world. First, the United States is one of the wealthiest nations in the worldRead MorePoverty in Relation to Welfare1110 Words   |  5 Pagespeople in every country, poverty is an unfortunate way of life. Without a doubt, those living in poverty would not live this way if there was a way to get out of it. Since most, if not all, of one’s income would go towards housing, food, utilities, insurance, and other necessities, it would leave very little to none at all towards the steps needed to gain better, higher paying employment. Those steps can include improving ones education to increase job prospects. One way state governments have chosen