Wwii Atomic Bombs Essays - Atomic Bombings Of Hiroshima And Nagasaki

Wwii Atomic Bombs WWII Atomic Bombs When the atomic bomb went off over Hiroshima on Aug. 6th, 1945, 70,000 lives were ended in a flash. To the American people who were weary from the long and brutal war, such a drastic measure seemed a necessary, even righteous way to end the madness that was World War II. However, the madness had just begun. That August morning was the day that heralded the dawn of the nuclear age, and with it came more than just the loss of lives. According to Archibald MacLeish, a U.S. poet, What happened at Hiroshima was not only that a scientific breakthrough . . . had occurred and that a great part of the population of a city had been burned to death, but that the problem of the relation of the triumphs of modern science to the human purposes of man had been explicitly defined. The entire globe was now to live with the fear of total annihilation, the fear that drove the cold war, the fear that has forever changed world politics. The fear is real, more real today than ever, for the ease at which a nuclear bomb is achieved in this day and age sparks fear in the hearts of most people on this planet. According to General Douglas MacArthur, We have had our last chance. If we do not devise some greater and more equitable system, Armageddon will be at our door. The decision to drop the atomic bomb on Japanese citizens in August, 1945, as a means to bring the long Pacific war to an end was justified-militarily, politically and morally. The goal of waging war is victory with minimum losses on one's own side and, if possible, on the enemy's side. No one disputes the fact that the Japanese military was prepared to fight to the last man to defend the home islands, and indeed had already demonstrated this determination in previous Pacific island campaigns. A weapon originally developed to contain a Nazi atomic project was available that would spare Americans hundreds of thousands of causalities in an invasion of Japan, and-not incidentally-save several times more than that among Japanese soldiers and civilians. The thousands who have died in the atomic attacks on Hiroshima and Nagasaki were far less than would have died in an allied invasion, and their sudden deaths convinced the Japanese military to surrender. Every nation has an interest in being at peace with other nations, but there has never been a time when the world was free of the scourge of war. Hence, peaceful nations must always have adequate military force at their disposal in order to deter or defeat the aggressive designs of rogue nations. The United States was therefore right in using whatever means were necessary to defeat the Japanese empire in the war which the latter began, including the use of superior or more powerful weaponry-not only to defeat Japan but to remain able following the war to maintain peace sufficiently to guarantee its own existence. A long, costly and bloody conflict is a wasteful use of a nation's resources when quicker, more decisive means are available. Japan was not then-or later-the only nation America had to restrain, and an all-out U.S. invasion of Japan would have risked the victory already gained in Europe in the face of the palpable thereat of Soviet domination. Finally, we can never forget the maxim of Edmund Burke: The only thing necessary for the triumph of evil is that good men do nothing. The Japanese attack on Pearl Harbor brought us into a war which we had vainly hoped to avoid. We could no longer do nothing but were compelled to do something to roll back the Japanese militarists. Victims of aggression have every right both to end the aggression and to prevent the perpetrator of it from continuing or renewing it. Our natural right of self defense as well as our moral duty to defeat tyranny justified our decision to wage the war and, ultimately, to drop the atomic bomb. We should expect political leaders to be guided by moral principles but this does not mean they must subject millions of people to needless injury or death out of a misplaced concern for the safety of enemy soldiers or civilians. President Truman's decision to deploy atomic power in Japan revealed a man who understood the moral issues at stake and who had the courage

Jovian Planets essays

Jovian Planets essays The view on how astronomers once thought that the planets in universe formed is beginning to change. Astronomers once thought the guest giant plants formed slowly. Gravity pulled debris together to form rocky cores several times a mass of the Earth, the largest of these sweeping up vast amounts of gas becoming huge giants. It is thought that roughly one billion years was needed to make these planets by the core-accretion process. Recent computer modeling in discoveries of extra solar planets suggest differently. Recent discoveries in modeling suggest that Jupiter size planets are lucky survivors of a much faster process. Survival is almost rare as these would be Jupiter's and Saturn's have only a few million years to grab all they can and many Jupiter like planets either bounce out of the solar system or plunge into the parents sons because of complex gravitational interactions. The startling shift in thinking began when Lawrence Livermore national laboratory physicist Bill Nellis fired a laser beam at a quarter size disk of liquid hydrogen. This laser crunch created metallic hydrogen, which is believed to fill the cores of the giant planets such as Jupiter and Saturn. Nellis's computer model results are "consistent with a rocky core mass of zero" says scientist Bill Hubbard. With no or a little rocky core, core-accretion is difficult to explain. Carne institution of Washington astrophysicist Alan Boss suggest Jupiter may have formed with a clump of gas collapsed under its own weight, similar to store formation. Ts disk instability model is actually updated version of the 29-year-old theory. This theory, created in 1951 by Gerard Kuiper, and refined by Al Cameron in 1970, suggested gas in a merely uniformed disk would abruptly become unstable and contract rapidly compressing into clumps forming spheres. "The disk-instability model fell into complete disrepute," says Boss as no one could reconcile rocky cores with a collapsing ...

Business Forecasting Essay Example | Topics and Well Written Essays - 500 words

Business Forecasting - Essay Example The third step includes testing the predictability of a model while using the ‘out-of-sample data’, that establishes whether the model can fulfill its duty of predictability. Historical data is essential to predict the future demand. Even though the future data may fit the future data, it is not an assurance that the forecast in the future is accurate. Like in the carbonated soft drink study, the estimate went on for over 153 weeks, with the 13 weeks used as out of sample data. The increased lead times for some specific packaging components is due to the complicated process. Also, the surfacing of more than normal supply and demand issues force a change in the supply chain after only thirteen weeks of the entire plan. The scenarios The scenarios as analyzed in the case study include sensing demand, shaping demand and ways of maximizing Return on Investment. The sensing demand handles the measures the organization undertakes to increase volume in the retail business assoc iated with grocery. The scenario is imperative in demand forecasting because it ensures the production of enough products for existing customers. The firm concentrates on major business indicators, to push sales up thus increasing profitability. The third scenario associated with maximization of ROI, the organization researches on other scenarios that can help boost sales and promote productivity. Another fourth scene not mentioned in the case study, but remains important is to understand the consumer in terms of quality and quantity standards.

Importance of Building a Brand for Kellogg Essay

Importance of Building a Brand for Kellogg - Essay Example In the Kellogg’s Case Study, an extensive evaluation of the brand building Kellogg is carried out. It deals with the question whether Kellogg is able to sustain its product lifecycle which is of great significance. Whilst building a brand for a product, it is equally important to consider whether it is possible to capture the market and profitability. For this, it is necessary to implement appropriate major strategic matters related to marketing. Kellogg’s All Bran Brand has been a leading brand in the fiber sector of the cereal market for a long period of time. Kellogg, a leading company in the global market, produces cereal products and other food items like snacks, pastries, cookies etc. One of the main features of Kellogg’s products is that the company offers goods marked for taste and quality. Among its number of brands, All-Bran brand of Kellogg Company holds a considerable position in the market avenues. This is mainly for the reason that the brand offers more nutritious products than the other brands. An effective implementation of both financing and marketing sectors is decisive for this brand building of All-Bran banner. In addition to this, it also requires consumer perception of the changes made by Kellogg Company. The brand image of Kellogg’s All-Bran is outstanding as compared to other high fiber brands made by Kellogg. So, in order to attain an overall development of all brands, Kellogg gas decided to merge all other brands with the master brand of Kellogg Company. As we take in to account the running style of the Kellogg Company, we find that it is necessary to evaluate the product life cycle of All-Bran product in order to improve its existing strategic plans. Effective implementation of marketing strategies is essential in the accomplishment of goals set by the entity. The success of any product and its marketing is highly related to its brand image. â€Å"Consumers very often do not use explicit, concrete, rational factors to evaluate products, and thus their motivation to purchase is not always easy to articulate.†Ã‚  

Metabolic Syndrome Essay Example | Topics and Well Written Essays - 1500 words

Metabolic Syndrome - Essay Example This complex set of conditions was named as the Clustering Syndrome X. This clustering syndrome later came to be known as the metabolic syndrome (Das 2010). Characteristics of Metabolic Syndrome The World Health Organization (WHO) defined the metabolic syndrome as â€Å"a constellation of features that included impaired glucose regulation (includes diabetes mellitus) and/or insulin resistance: the 25% of subjects with the lowest insulin sensitivity (measured directly) (Das 2010).† Metabolic syndrome is basically a set of diseases which enhance the cardiovascular risk. The main characteristics of the metabolic syndrome which have to play a role in the heart diseases are abdominal obesity, atherogenic dyslipidemia, increased blood pressure, insulin resistance, pro-inflammatory state and prothrombin rate. All these diseases tend to occur at the same time in the onset of the metabolic syndrome which directly affects the heart of an individual. (Das 2010; Ulrig 2006). Causes of Met abolic Syndrome Obesity, hypertension and diabetes individually have their own adverse effects which can affect the systems of the body. But if these diseased states occur altogether then the person would develop severe complications. Metabolic syndrome has been known as the insulin resistance syndrome because the hormone insulin in these patients is found to be in high quantities. Metabolic syndrome is believed to be caused by different mechanisms which relate to dysfunction of the body. Insulin Resistance is considered to be one of the most important features of the metabolic syndrome. By insulin resistance here it is meant that the body is not able to respond to the normal levels of insulin and this is a primary reason because of which hyperinsulinemia is seen in the patients with metabolic syndrome. It is argued that both hyperinsulinemia and insulin resistance play an important role in causing hypertension, hypertriglyceridemia and reduced endothelial function which then poses risk to the cardiovascular system(Fan 2007; Das 2010). Leptin resistance is also considered to be a feature of this metabolic syndrome. Leptin resistance results in an increased quantity of leptin in the body. This increased leptin is considered to be a cause of reduced insulin sensitivity in the body. Research has shown that the rate of leptin and glucose disposal rate are inversely proportional to each other (Fan 2007; Ulrig 2006). Obesity is considered to be one of the main causes of the metabolic syndrome. It is related to insulin resistance, hyperglycemia, dyslipidemia, hypertension, prothrombin rate, and pro-inflammatory states. Adipose tissue is an active metabolic organ which helps in secreting several substances inside the body. It secretes cytokines, inflammatory mediators, fatty acids, leptin, resistin and adiponectin. It also releases efferent signals which help in maintaining the hormonal systems of the body. Thus adipose tissue is involved in a lot of metabolic process es happening inside the body and maintenance of these metabolic processes is necessary in a normal individual. If the adipose tissue of the body undergoes massive changes as in obesity it can pave a way for the metabolic syndrome. In obesity it is seen that adipose tissue is also deposited on the visceras of the body and this proves to be a major determinant of the metabolic

Health And Safety In Metal Workshops Environmental Sciences Essay

Health And Safety In Metal Workshops Environmental Sciences Essay According to the ILO, some 2.3 million workers around the world die due to work-related accidents or diseases every year. That is an average of around 6000 deaths daily. There are also around 340 million cases of occupational accidents and 160 million victims of work-related illnesses each year and frequent estimates have show an increase of accidents and ill health. 1.1 Health and safety in metal workshops Metal works has proved to be a necessity in the manufacturing, construction and other such industries. Since prehistoric times till this modern era, metalwork has evolved into a massive industry and gained a large influence on the global economy. Metals are used in a huge range of products in this modern time. Their use is largely dependent on their properties. For example aluminium is used in manufacturing of automobiles, whereas iron is used in the construction sector. In this modern world, no one can say that he does not have a piece of metal at home or has never been in need for some metal work at any occasion. Metal consumption in the world, as the other resources is rising rapidly. This is due to the growth in population and rising wealth (Norgate T.E and Rankin W.J, 2002). This increase in demand has led to an increase in the number of metal workshops around the globe. Its effect can also be felt in Mauritius. Metal workshops have grown up like mushrooms all around the island, to meet the demand of the market for more metal works. How many people have ever wondered how and in what conditions metal work is being performed? Most formal enterprises abide by the current legislations governing the health and safety in Mauritius, the Occupational Safety and Health Act 2005 also known as the OSHA-2005 and its other relevant regulations. The employers make use of good safety and health practices and this has been proved to be an enriching experience. The has been considerable decrease in the number of absenteeism and number of accidents, resulting in less money loss in terms of non-payment of injury leaves, compensation, work days lost and any other legal suits. In Mauritius, there are many small metal workshops. Those are operated by people having little or no concept of health and safety at work. The workers are often working alone and in some cases students are employed to work during school holidays. The people working therein are more concerned about having their salary at the end of the month with giving much attention to their personal safety, but what would happen if the latter is injured or if they become so ill due to exposure to any substance that become bed ridden or even die? What would be the impact on the latters family? 1.2 Wastes in metal workshops During machining in a metal workshop waste is generated. Most of the waste is from the raw material which is the metal being fabricated. The metal wastes that are generated vary greatly in form. They have different shapes and sizes ranging from large unusable pieces of metal to dust particles. Other sources of wastes are used oil, grease, wood, chemicals, paint containers, grinding discs, used electrodes (from arc-welding), solvents and other office products such as paper. Accumulation of these may pose as a hazard to health and safety of the workers present in the workshop and also affect the environment. 1.3 Problem statement: The alarming rise in the number of accidents in working environment shows some lacking in the management of health and safety at the workplace. A metal workshop is a place full of hazards and if precautionary measures are not taken, these may result in incidents or accidents. Also if wastes are not being managed properly, it may cause harm to the environment and for the enterprise itself it is money lost in terms of unused material and it requires a place to be disposed of. Some employers have no idea about how to dispose of the materials and in informal sectors some enterprises dump all the wastes that are not taken by the municipal waste carriers. 1.4 Aims: The study will firstly provide an analysis of how health and safety is being managed in metal workshops and will provide remedial measures so as to decrease the number of accidents. The second purpose of the study is to give an understanding of how wastes from metal workshops are being managed and to provide recommendations so as to improve the efficiency in the waste management practices. It will focus mainly on the wastes generated in the metal workshops only. 1.5 Objectives: Identify the sources of health and safety hazards, wastes Identify the impacts of health and safety hazards on the employees and, waste on the environment Identify how the health and safety and, wastes are being managed Assess the level of awareness related to Health and safety, and Waste management Evaluation of health and safety management and, waste management Provide recommendation on better ways to manage health and safety and, waste management Chapter two 2.0 Literature review 2.1 What is health and safety? Health and safety is basically the provision and maintenance of a safe and sound working environment. 2.2 Health and safety in the informal sector For this study, safety and health in metal workshops can be classified as part of the informal sector. The ILO introduced the concept of informal sector around 25 years ago. In 1972, an ILO employment mission report in Kenya found that migration from countryside to cities resulted in urban unemployment. This is the reason why rural migrants and urban dwellers find employment in the small scale and micro-level production and distribution of goods and services. These largely unrecognised, unrecorded and unregulated small-scale activities constitute the informal sector. According to the ILO, the informal can be characterised as a range of economic units in the urban areas, which are mainly operated and owned either in partnership with members of the same family or by individuals alone. It employs one or more employees on a continuous basis in addition to unpaid family worker and/or casual workers. The employer-employee relationship is often not in written and informal with no or little appreciation of workers rights industrial relations. The works performed are mainly labour intensive and require low-level skills. Typically they operate on a small-scale with no or very little level of organisation. They are engaged in the production and distribution of goods and services with main objective of generating employment and basic income. In Mauritius, all organisations that are known and registered as forming part of the formal sector, have to comply with the norms and procedures established for them by the different authorities. They are subjected to regular inspections by the various institutes to monitor their level of compliance and in case of abnormalities; they may subjected to fines and other types of penalties. On the other hand, unregistered organisations form part of the informal sector. So, you can imagine that the small metal workshop at the corner of the street where you live forms part of the informal sector and its existence may not even be known to the authorities. Have you ever thought about how many such workshops are in Mauritius? The number of persons working therein and the level of safety? 2.3 The norms Section 5 of the OSHA-2005 stipulates that an employer has the responsibility to ensure so far as is reasonably practicable the safety, health and welfare at work of all his employees. It also includes the following; The employer shall provide and maintain a working environment and any plant or system of work and ensure that any place of work is under his control, including access and egress therein. He should ensure the safety and health of the workers during use, handling, storage or transportation or materials and substances. He should provide and maintain facilities and arrangements for the welfare at work of his employees. He should ensure the provision of information, instruction, training and supervision as required for the safety and health of the employees. He shall also ensure that any person not in his employment is not exposed to any risk to his safety and health. Section 13 of the OSHA-2005 stipulates that any self-employed person shall conduct his work in such a way so as to ensure the health and safety of his workers and any other persons who may be affected. 2.4 Compliance with the norms The creation of a safe working environment starts by oneself. Health and safety is present in Mauritius but was not paid a heed few years ago because many persons were not even aware of its existence. It is now that people are becoming more aware about it. Non-compliance with OSHA-2005 means contravention and is an offence which is punishable by Law. According to the Act, any offence under the Act may be punished by a fine of not more than Rs.75, 000 and an imprisonment of not more than one year. Although the terms of the Act are set out in simple English, it is very difficult to implement it as requires heavy investments and the employer become less willing to invest because they find it annoying and not profitable to abide by set standards. The registered enterprises are frequently visited by relevant authorities that see to it that the norms are being respected. 2.5 Metal fabrication process Metal fabrication processes involve raw materials and range of tools to give shape to desired metal products. These processes can be categorized into cold, warm and hot working based on the temperature they are being processed. Hot working is the process that depends on control heat applied to change the physical properties of the metal piece and cold working is the application of direct physical pressure (U.S. Environmental Protection Agency (EPA), 1995). Metals are present in the daily basic objects such as paper clips, computers, bolts, nails, and automobile parts, parts used for instruments and machinery and numerous other products and to transform metals in these objects, metals pass through a series of manufacturing procedures such as cutting, forming, and finishing, bending, punching, drilling, turning, grinding and threading. (Johnson, 2008) The main procedures in metal fabrication are as follows: 2.5.1 Metal Forming Forging: is the process of working metal with applying force to give shape to the metal, this include the use of forging hammer or drop hammer, press forging, forging machine such as drop hammer, screw press, crank press, hydraulic press. Rolling: is the process whereby compressive force is applied on long metalwork to reduce the thickness its cross section, this cane be done either by hot rolling or cold rolling procedures. Extrusion: is the process where high pressure is used to force a metal block or billet to flow through o die orifice whereby the metal is reduced in cross section. Extrusion is used to give cylindrical shaped or hollow bars of metal. The amount of forced required during the process is huge so metals are generally hot extruded. Bending: is a flexible process to deform metal changing its shape, the metal is stressed beyond the yield force but lesser than its tensile strength which is done by of applying force through hydraulic, pneumatic and electrical machines.   Spinning: is a process that produces rotationally symmetrical hollow parts, hemispheres, cones and cylinders shapes. Generally metal spinning is a cold process done by manual, automated or hydraulic equipment. 2.5.2 Shearing Conventional shearing: is the process used to cut straight lines on flat metal sheet stock. Turret Punching: is a Computer Numerically Controlled (CNC) process use to make hole in metal sheet. This is a cold process where the metal properties are unchanged since they are not exposed to thermal impact. 2.5.3 Material Removal Sawing: is the process whereby a tool with tooth blade is use to cut metal. This is a basic way of cutting metals into desired pieces and with time the simple handsaw has been designed into different saws such as horizontal band saws, vertical band saws, pivot arm band saws, plate/block band saws, steel circular saws, non ferrous circular saws, and power hacksaws. Turning: is the process where the diameter is reduced by removal of the outer part of a rotating metal work piece. Drilling: is the process to pierce hole in metal work piece n accordance to the specification of the desired bore or ream. Milling: is the process where a rotating cutter is use to cut the metal which is fed against the rotating cutter. Grinding: is the process whereby there is removal of metal by abrasion from bar or billet stock surfaces. 2.5.4 Advance Methods Laser cutting: is the process where metal is vaporized in a well defined area; the cutting source is very small which allows small cut widths. The laser beam can be use to cut very hard or abrasive metals and is very cost effective since there is a low operating and maintenance cost. Waterjet Machining: in this process a water jet cutter is used as tool to slice metal with a jet of water under a high velocity and pressure. The cutter is generally place at the nozzle where water will be ejected under high pressure, bombarding the metal cutting it with the high water speed. Electrical Discharge Machining(EMD): is the process which is also known as spark erosion, whereby electrical energy is used to remove metal this result in shapes that cannot be produced by other machining process on thin metal piece. Wire Discharge Machining (WEMD): is a more precise process of cutting metal where electrical energy and a small diameter cooper or brass wire is used. Generally it is a computer numerically controlled (CNC) process. 2.5.5 Welding and Joining Arc Welding: is the process where a welding power is established between an electrode the metal that need to be welded. During welding a shielding gas (inert or semi inert gases) or filler metals are used as a protection. The fusion process takes place to bond the desired parts of metals by high intense heat, whereby the metals melt on heating to mix together and on cooling they solidify to form a metallurgical bond. Shielded Metal Arc Welding (SMAW): in this process a stick welding is used which is coated whit flux that produces the gas shield as protection. Here also the fusion of the metal is done by melting produced by the heat of the arc between the coated electrode and the metal piece. Laser Beam Welding (LBW): is the process whereby metals are radiated by a concentrated beam of coherent light to melt the desired parts. As in arc welding it is protected by inert gases. Gas-metal Arc welding(GMAW)or (MIG) : a process which is mostly known as Metal Inert Gas welding done with the use of a wire and electrode where a an electric arc is generated to melt the wire to feed the weld puddle. A flow of inert gas is use as shield. Fluxed cored Arc welding (FCWA): the process commonly known as fluxed cored uses a long continuous solid wire incorporated in the welding gun. The wire is coated with flux that produces the arc, additives to weld and slag. The shield is a mixture of carbon dioxide and inert gas and large amount of fume is produced. Gas Tungsten Arc Welding (GTAW): the process involve the use of tungsten electrode to produce the electric arc. In this process the electrode is not consumed as in (SMAW). The gas shielding is a mixture of argon and helium and no metal filler may be use. Electroslag Welding (ESW): in this process the joining of the metal is done by passing electric current in a molten conductive slag that heat up the filler and metal. This process is generally use to join very thick metal 2.6 Health effects Hazardous materials are likely to be found in a metal fabrication. These can directly or indirectly affect the health of the workers either by contact or absorption in the body. Moreover when assessing the potential health effects with those materials that the workers are exposed to, it is important to understand the difference between toxicity and hazards. 2.6.1 Toxicity: Toxicity is the ability of a particular substance to produce an unwanted effect when the chemical has reached a sufficient concentration at a certain part of the body. 2.6.2 Hazards: Hazards is the possibility that this concentration of the chemical in the body will likely to occur. However, a material can be very dangerous but not hazardous to its exposure. It all depend whether it is properly handled and not contacting with the body. On the other side, a material can be low toxic but very hazardous to health and safety. 2.7 Routes of entry: The four common routes of entry are as follows: Inhalation via respiratory track Skin contact via dermal contact Ingestion through the digestive system Injection 2.7.1 Inhalation via respiratory track: It is a situation where the body is taking materials in the body by breathing. This is the most common mean by which chemical particles enter the body. These contaminants are likely to have both acute and chronic effects. Breathing in of these toxic substances in most cases is likely to cause damage to the mucous membrane of the mouth, throat, lungs and circulatory system. These can happen for example during welding where fumes are generated. 2.7.2 Skin contact via dermal contact: The skin is known to be the largest organ of the human body and provides protection against radiation, heat and abrasion and acts as a barrier to chemicals and bacteria. Skin contact is known as the primary route of entry into the body. Contact with hazardous substances may damage the skin. There are a number of conditions that may be caused by exposure to the different substances ranging from minor irritations to ulceration and cancer. 2.7.3 Ingestion through the digestive system: This is the least common type of exposure in occupational environment, but can happen as a due to carelessness or poor personal hygiene i.e. when the workers eat or drink in the workplace or without washing their hands. In metal workshops the workers are likely to ingest the metal particles that can be found on their hands or deposited on their food. 2.7.4 Injection: This occurs when substances are absorbed directly through cuts or injury with contaminated sharp objects. In metal workshops cuts and bruises are most likely to happen during handling of the materials. In most cases, these small incidents are normally not taken into consideration due to its nature as the works are not affected by it, but the danger is that by not taking care of it, an infection may occur having significant impact on the workers health, hence affecting work as well. 2.8 Physical hazards 2.8.1 Noise Sound is a vibration that can be perceived by ear similarly noise is perceived by the ear but as an unwanted sound. A more appropriate definition noise is any disturbance produced within a range of frequency (NIOSH, 1991). Noise arises during most activity done by human, when measuring the impact on human health noise is categorized under occupational noise or environmental noise (WHO, 2004). Noise is generated by almost every equipment, machine or tool used in metal fabrication industry example motors, gears, belts and pulleys, point of operation during cutting, welding and vibrations of footing and equipments or piece of metal being worked. Noise can be controlled by being in line to the hierarchy of control, in first instance by good maintenance of machines, equipments and tools and by applying engineering controlled such as isolation, stabilizing and damping. To further reduce noise segregation control may be opted so that a minimum number of employees may be affected, the equipments may be enclosed so as much of noise is absorbed or reflected within barriers. Hearing protection equipment may be provided to employees depending on the nature of the operations such as protection for metal grinder, welding and sheet metal fabrication. Last but not the least it is the management responsibility to ensure and implement an effective hearing conservation program. ( AmTrust Fi nancial, n.d) 2.8.2 Heat stress Heat stress is said to be a serious type of physical hazard that should be considered in metal workshops especially during summer seasons. It occurs when workers do some operations in high air temperatures, high humidity or when they are having physical contact with hot objects. While working in these conditions, workers have to wear protective clothing which is likely to cause heat stress. (Reese, C.D, 2001) 2.8.3 Cold stress According to NIOSH, cold stress arises when workers who are expose to cold or working in a cold environment. When temperature goes down, thus the body maintains its temperature by reducing blood flow through the skin. The most extreme effect that the workers may get is on the extremities (fingers, toes, earlobes and nose).when fingers become cold they become numb and insensitive and this may increased the possibility of having accidents in the workplace.(Reese,C.D,2001) 2.8.4 Radiation Radiation can be classified according to the effects that it produced to the matter. There two types of radiation which are ionizing and non ionizing. (ILO, n.d)Ionizing radiation is produced by high voltage devices which can be present in metal workshops which can affect the workers. (NIOSH.n.d). Non ionizing radiation is a form of electromagnetic radiation that can have various effect on the body, which depend on the on the particular wavelength of the radiation being involved. (Reese, C.D, 2001) 2.8.5Vibration Vibrating tools and the equipment that are being used at frequencies between 40 and 90 hertz can cause damage to the circulatory and the nervous systems. One of the most common Cumulative Trauma Disorders (CTDs) results from vibration is the Raynauds Syndrome. It is the most common symptoms leading to numbness and tingling in the finger that is the skin turns pale, ashen and cold, and thus this leads to eventual loss of sensation and the control in the fingers and hands. (Reese, C.D, 2001) 2.8.6 Confine space In 1979, the National Institute for Occupational Safety and Health (NIOSH) published a Criteria Document providing recommendations for working in confined spaces where it defines confine space as a space where the design has limited openings for the entry as well as for the exit. The examples of confine space are tunnel, manhole, utility vaults, storage tanks and silos. There are different fatalities that may occur in a confine space where death may occur from different causes such as asphyxiation, the inhalation of toxic gases or vapors, drowning, falling, from explosions, or contact with either mechanical or electrical energy. 2.9 Ergonomic hazards Working posture is very important when workers are doing their jobs in a workplace. Poor working posture is said to be an ergonomic hazards as it can cause fatigue, discomfort and injury risk in the working environment when workers are doing repetitive work, the use of force and also the duration of the work. Some examples are outstretched arms, twisting, and fixed postures. (HSE, n.d). 2.10 Biological hazards Biological hazards include vermin, insects, molds, fungi, viruses, and bacterial contaminants. Workers may get infections and parasitic diseases when they are exposed to insects or by drinking contaminated water. Dusts present in the metal workshops may contain many kinds of allergenic materials that can affect their health. (Reese, C.D, 2001) 2.11 Chemical hazards Chemical hazards arise from the excessive airborne concentrations of mists, vapors, gases or solids that are present in the form of dusts and fumes. These can be source of danger to the body for example these materials may act as skin irritants or may be toxic by absorption through the skin.(Reese,C.D,2001) In metal workshops there are metal fluids that are used for some kind of processes. There are different kinds of oil product which are used in metal workshops. 2.12 Other types of hazards 2.12.1 Electrical hazards Electricity has long been recognized as a serious workplace hazard, exposing employees to electric shock, electrocution, burns, fires, and explosions. According to the Bureau of Labor Statistics of the United States, in 1999, 278 workers died from electrocutions at work, which accounts for almost 5 percent of all on-the-job fatalities that year. Thus, they relate that most of these fatalities could have been easily avoided. 2.12.2 Mechanical hazards Mechanical hazards are created by the powered operation of apparatus or tools. The applied power which is applied can be of either electrical or human.( Holt, Rinehart and Winston, n.d) Machinery, its parts, tools, objects and materials processed or used in the work process are often said to be a source of mechanical hazards leading to severe injuries. Machinery, along with power supply systems, can also create electrical hazards, leading to severe or fatal accidents. 2.13 Hierarchy of control The occupational safety and health administration requires employers to protect their employees from workplace hazards such as machines, work procedures, and hazardous substances that can cause injury or illnesses. There are different ways that are used to control hazards. 2.13.1 Elimination Elimination of the hazard is the most effective means to control the hazard in the workplace. Thus, in the workplace it is important to remove the dangerous machines to ensure a proper working environment for the workers. (Work Cover NSW, 2010) 2.13.2 Substitution It is the second most effective way to control the hazard present in the workplace by replacing the dangerous equipment with a safer one. If there is an existing process, major changes in equipment and procedures may be required to eliminate or substitute for a hazard. (NIOSH, n.d) 2.13.3 Engineering control Engineering controls are used to remove a hazard present in the workplace or place a barrier between the worker and the hazard. (NIOSH, n.d).There is safety guards that are present to protect the workers while using dangerous machines. (Work Cover NSW, 2010) 2.13.4 Administrative control It is used to control the hazard through the administrative directives. (Reese C.D, 2001). In the workplace the workers are trained how to use the machines safely and precautions need to be taken when operating dangerous machinery. 2.13.4 Personal protective equipment Personal protective equipment (PPE) is the last resort that can be used in the workplace. There are variety of devices and garments that are used to protect the workers from injuries. There are PPE that are designed to protect the eyes, face, head, ears, feet, hands ,arms and the whole body.(Reese,C.D,2001) 3.0 What is waste? According to the Basel Convention, waste is any substance or material that is disposed or which is intended or required to be disposed of. The material in itself is of no use for the generator. Wastes may be produced during extraction and processing of raw materials into final products and also during the use of the final products and other human activities. (United Nations Statistics Division (UNSD), n.d) Hence from the above definitions we can say that materials which are of no use to us can be considered as being waste. 3.1 Waste management in metal workshop In metal workshops, as in the other industries, waste is likely to be produced. Improper management of these wastes may result in problems. According to the Environment Protection Act 2002, all metal workshops need to have a Environment Impact Assessment (EIA) license which clearly states the processes being undertaken and the direct and indirect impact on the environment and any action which they propose to minimize, mitigate or control the impacts. Once they have obtained the license, the workshop is visited on a regular basis by the relevant authority to ensure compliance with the terms in the EIA license. As mentioned earlier in this study, there are various sources of waste in metal workshops. The most considerable waste is from the material being used for processing, which is the metal itself. In Mauritius, all waste except the metals are sent in the municipal solid waste management system. The metal are collected by scrap metal carriers and sent for recycling. The sad part is that this is not the case for all the metal workshops. The formal sector abides by this practice but the informal sector sometimes indulges in dumping activities to dispose of the metal waste. Metal is a natural resource which is undergoing heavy extraction. The Club Report and other energy crisis have lead to the fear of not being able to cope with the need in worlds metal demand (Radezki, 1975). It is important to make a distinction between resource and reserve. A resource is a naturally occurring material in the earths crust whereas a reserve is the part of an identified resource which can be extracted or produced at the time of determination. World reserves of aluminium and iron are estimated at 3,910 and 65,000 Mt respectively, while the world resources of these metals are estimated at 11,000 and 230,000 Mt respectively (Norgate T.E and Rankin W.J, 2002 cited Dzioubinski and Chipman, 1999; US Bureau of Mines, 1995). According to the World Bank document, the reserves for iron ore would last for around 50 years and for copper and bauxite 29 years (Dr. Diederen A.M, 2009;Radetzki, 1975). This has led to an increasing concern for resource conservation and also environmental protection as the waste tends to pollute the environment. Thus, the concept of recyclability of materials is used to recycle the metal. It is to be noted that no study has been carried out so far to evaluate how waste is being managed in metal workshops in Mauritius. Hence, we dont have much information available in this field; this is among one of the reasons why we chose this study. This research can also be used as a foundation for other people conducting research in the same field. CHAPTER 4 Methodology Research methods are the different modus-operandi that is used in a research. (Rajasekar et al, 2006). They include theoretical procedures and experimental studies among many others. Choosing and applying a proper research method is vital as it will help to evaluate and use the research results which can be valuable to local or international organisation or countries as well as its the method chosen that will help us to meet with our objectives and consequently come up with vital discussions which may improve things. Research Approach and Design: According to Burns and Grove (1993: 777), a quantitative research can be defined as a formal and systematic process to describe the test relationships and examine cause and their interactions on variables. Furthermore, a survey is used to collect data from a large populat

Fight Club Essay -- essays research papers

What did the film Distort?   Ã‚  Ã‚  Ã‚  Ã‚  A film adaptation of a book can be like hearsay. The author writes a novel to send a certain message. Someone else reads it interprets it in a different way and talks to a film producer. The film producers then take its, leaves out major events, change the ending and make a film with a completely different message than the author. The author then screams bloody murder then takes his cut from the box office. Joesph Boggs, the author of Problems with Adaptation, says â€Å"We expect the film to duplicate exactly the experience we had seeing the play or in reading the novel. That is, of course, completely impossible† (Boggs 672). No one told this theory to David Fincher, the director of Fight Club. Fincher stuck almost like glue to the novel. He did however, change a few events in the novel and the ending but stills successfully puts Palahniuk’s words on screen that even made Palahniuk happy to earn his profits.   Ã‚  Ã‚  Ã‚  Ã‚  Most of the changes Fincher made to Palahniuk novel were minor and insignificant. One example is the fat Tyler and the narrator used to make soap. In the novel, they steal the fat from Marla. Marla was keeping her mother's liposuction fat for her own plastic surgery. They steal the fat and store it in the Paper Street Soap Company's fridge. In the movie, Fincher had Tyler and the Narrator steal it from a plastic surgery dumpster. In the novels version it could be interpreted as another th...

Othello and Race Essay

In Shakespeare’s literary creation â€Å"Othello,† the protagonist, Othello, is a high ranking black soldier in a community of white people. Though he had gained his high marks by sheer perseverance and dedication, as it is in the old times, there are the people’s doubts. He was, after all, still a black man. Shakespeare, through this tragedy had shown the stereotypes of our modern times; that being white presents superiority or a sense of control over people of a different race, specifically those of a darker color. Shakespeare, however, did not mean to degrade or discriminate but rather, he seemed to point out the common mistakes of people that ultimately caused racism. Othello’s race and basically his skin color had played a major factor in the story’s main theme, progress and twists. The story mainly revolve on the struggle of a black man and how he found his happiness, but was cut short by other people’s jealousy and deceit. In his fight for love, the fact that he was black was used against him. It was presented to the woman’s father in a sense that generalizes black people as untrustworthy. It was also the main reason Iago used to point out that his wife Desdemona betrayed him for the love of another man, a man who happens to be of pure white ancestry.

Pyrometallurgical Recovery Of Metals From Electronic Waste Environmental Sciences Essay

Veldbuizen and Sipple ( 1994 ) acknowledged that stuffs come ining into the reactor are immersed in a liquefied metal bath where the temperature is around 1250 grades, which is churned by a mixture of supercharged air. The burning of plastics and other inflammable components in the eating procedure cut down the cost of energy. In the reactor, all drosss including Fe, Zn and lead are converted into oxides and so converted into scorias to silica by the agitated oxidization zone. These scorias are cooled and milled to acquire more and more metals before the disposal ( Cui & A ; Zhang, 2008 ) . The diagrammatic word picture of the works and the recycling procedure of E-waste are given below. These two diagrams will explicate how cast-off waste of Personal computers and laptops are recycled and disposed off. The Cu matte incorporating cherished metals is removed and transferred to the convertors. After the patterned advance in the convertors, liquid blister Cu is refined in anode furnaces and dramatis personae into anodes with about absolute pureness of 99.10 per centum. The residuary 0.9 per centum holds the valuable metals such as gold, Ag, Pt and Pd. There are besides some other recoverable stuffs like Ni, Se, Te etc. Afterwards, electro-refining of the anodes recovers these marketable metals ( Cui & A ; Zhang, 2008 ) . Fig-9 shows that E-waste can be fed into the procedure in different stairss depending upon their purenesss. High Cu incorporating bit is fed into change overing procedure straight but low class E-waste is fed into Kaldo Furnace. The needful O is supplied by the O spear for the intent of burning along with oil O burner. The off-gases require an extra burning air of about 1200 grades after burning. Thermal energy is recovered by a steam web through criterion gas handling system.Figure: – 8 Pyrometallurgical Recover Process at Recycling Plant( Beginning: Cui & A ; Zhang, 2008 )Figure: – 9 Recovery of Cherished Materials( Beginning: Cui & A ; bent, 2008 ) The installing of off-gas emanation control system in an IsaSmelt Furnace ( a new method of E-waste recycling and metal recovery ) is an illustration for retrieving thermic energy by a steam web through criterion gas handling system. Here the hygienic gases and procedure gases are cooled to retrieve the energy and are cleaned utilizing techniques like bag house filters, electro filters etc.2.12.3 Recovery of Cherished Metallic elements Using IsaSmelt Furnace:The smelting ( the procedure of runing to retrieve metal from its ore ) procedure in the recycling of E-waste is done in IsaSmelt Furnace ( Cui & A ; Zhang, 2008 ) . Like Pyrometallurgical Process one of the most of import advantages of utilizing this method is that the demand for energy beginning and cut downing agent for the smelting procedure will be quarterly substituted by the combustion of the organic substances like plastics that are present in the E-waste ( Hageluken, 2007 ) . The smelting procedure offprints cherished me tals in Cu bullion from other metals that are present in a lead scoria, which is further treated in a BMO. The cured Cu bullion is used in the following procedure of valuable metals recovery through copper-leaching ( a method used for the recovery of Cu from its ore ) and electro-winning ( method of taking drosss from the metals ) procedures. There are three nucleus processing stairss in the BMO: The Lead Blast Furnace: to diminish the oxidized lead scoria from the IsaSmelt together with high lead incorporating 3rd party natural stuffs. The Lead Refinery: the assorted lead bullion, roll uping most of the non-precious metals is farther treated here and the procedure is called Harris procedure. Particular Metallic elements Plant: pure metals are recovered in this works. ( Cui & A ; Zhang, 2008 ) The image of the emanation control system is as under and could be adapted by the recycling centres to cut down the degree of emanation. Hageluken ( 2007 ) , in his study accepted that the emanations from the works are much below the bounds set by the European bureaus and authorities.Figure: – 10 IsaSmelt Furnace Fitted With Emission Control System( Beginning: Cui & A ; Zhang, 2008 ) Apart from recycling methods like Pyrometallurgical Process and method utilizing IsaSmelt Furnace, bio-metallurgical procedure is another method of retrieving cherished metals from E-waste. Due to moo cost and high specificity for the mark elements, bio-metallurgical processing is attractive and soon limited to merely rich states ( Cui & A ; Zhang, 2008 ) . Brand et Al, ( 2001 ) displayed how Fungi ( Aspergillus Niger, Penicillium Simplicissmum ) and Thiobacillus bacteriums can enable metal filtrating from electronic bit. To retrieve gold, Cu etc from E-waste, Creamer et Al ( 2006 ) engaged Desulfovibrio Desulfuricans.2.13 Batteries: Recycling & A ; Material Recovery:Batteries are one of the terminal merchandises of E-waste recycling because it remains integral during the E-waste recycling procedure ( SWEEEP, 2010 ) . Land make fulling or Incineration of these batteries can do terrible wellness and environmental jeopardies ; when the shell of these land filled battery corrodes it can ensue in air, dirt and H2O pollution because it contains toxic substances like lead, quicksilver, Cd ( human carcinogen: substance that causes malignant neoplastic disease ) etc ( Frick & A ; Knudsen, 2002 ) . Similarly incineration of batteries will ensue in air pollution and other wellness jeopardies. On the other manus proper intervention and recycling of these batteries will be good both for the environment and for the economic system because it contains valuable stuffs like steel, Ag, nickel, Zn, manganese, gypsum etc which can be recovered and the harmful substances like lead, Cd, quicksilver can be safely separated and can be reused as secondary natural stuff ( G & A ; P, 2010 ) . UK generates 20,000 to 30,000 metric tons of waste batteries every twelvemonth and out of it less than 1,000 metric tons are recycled ( Resource Management & A ; Recovery, 2003 ) . Harmonizing to waste battery ordinances in Europe ( European Batteries Directive, 2006/ 66/EC ) , UK is needed to recycle 10 % of portable batteries in 2010, but in UK, merely 3 % of portable batteries are presently being recycled.2.13.1 Methods of Battery Recycling:Harmonizing to Espinosa, Bernardes & A ; Tenorio ( 2004 ) , it is imperative to cognize the composing of batteries in order to advance its recycling because the chemical composings of different batteries are different, so same methods can non be used for recycling different batteries. But unluckily there is no relationship between the size or form of batteries and their composing. There are chiefly three methods for the recycling of batteries: Pyrometallurgy Hydrometallurgy Separation of constituents through unity operations of excavation intervention Out of these three methods the most normally used method by all the recycling companies in UK and Europe are Pyrometallurgy and / or Robust Pyroprocess ( another method ) severally because of their simpleness and high efficiency / capacity ( even though the energy demands for these procedures are high ) ( Jan Tytgat, 2010 ) . The Pyrometallurgy and Robust Pyroprocess methods of recycling will be discussed in item in chapter four.2.13.1 Hydrometallurgy Method of Battery Recycling:In the past two decennaries, the most active research country on recovery of metals from battery is retrieving cherished metals by Hydrometallurgical procedure ( Horn & A ; Holt, 1990 ) . In this method the unsorted batteries are fed straight to the furnace. Inside the furnace the organic constituents will acquire decomposed to organize bluess ( Sequeira, 1994 ) . For illustration quicksilver compound will acquire decomposed to organize quicksilver vapor. These bluess are so passed through a capacitor to retr ieve quicksilver and other condensable liquids. The condensate will acquire fractionated by the centrifugation procedure into quicksilver, waste H2O etc. The waste H2O will so passed through an aluminum cementor to retrieve the residuary quicksilver in the signifier of an aluminium-mercury metal. The staying waste from the cementor is send to an evaporator to bring forth some steam or H2O and a salt mixture ( disposable ) in order to forestall the inordinate salt construct up in the procedure. The residuary gases and other organic bluess are oxidized in an afterburner and expelled to the ambiance in the signifier of H2O vapor and C dioxide after a careful intervention to take the staying sum of quicksilver since this quicksilver may incorporate hints of risky substance like Cd ( Sequeira, 1994 ) . The staying solids from the furnace are shredded and leached ( acid or acerb leaches ) before the magnetic separation of Fe and Ni from other non magnetic solids. The leaching solutions which contain oxides of C, Zn, manganese etc are so subjected to separation and purification processs such as precipitation of drosss, solvent extraction, ion-exchange etc. Consequently, the solutions are treated by electro refinement procedure for metal recovery ( Sequeira, 1994 ) . It is estimated that for retrieving a metric ton of Cu this procedure requires around 3,400KWh of energy ( Liew, 2008 ) . Precipitation of drosss is nil but the drosss present in the solution will go a precipitate ( solid ) during the chemical reaction, which can be removed subsequently by filtrating. Thus the staying liquid ( supernate ) above the solid containing cherished metals can be separated and cherished metals can be recovered by electro refinement. Electro refinement is a method of sublimating metal by electrolysis. Here the impure metal and cathode will be immersed in a solution ( electrolyte ) incorporating cations and electric current will be passed between the impure metal and cathode. As a consequence of it the pure metal will acquire deposited on the cathode and can be separated. Solvent Extraction is the procedure of dividing liquid mixtures by doing usage of solubility differences of the different constituents ( Cox & A ; Rydberg, 2004 ) . Ion-Exchange is an electrochemical procedure in which an unwanted chemical constituent is removed from solution by replacing it with a more attractive one ( Friedrich, 1995 ) . The chief terminal merchandises of this procedure are C and black lead which can be removed subsequently by filtration. Compared to Pyrometallurgical procedure Hydrometallurgy is more exact and predictable but its operating cost is high and it is more complicated ( Sequeira, 1994 ) . This method is chiefly used for the recycling of lithium-ion, nickel Cd, Zn oxide and quicksilver oxide batteries.Figure: -11 Hydrometallurgy Method of Battery Recycling( Beginning: Sequeira, 1994 )2.13.2 Separation of Components through Unity Operations of Mining Treatment:Separation of constituents through unity operations of excavation intervention method is besides used for battery recycling ( e.g. nickel Cd batteries ) . Using this method more than 2kg of Ni home bases present in a nickel Cd battery can be recovered. A compound with a high sum of Cd can besides be obtained and can be farther treated ( cadmium distillment ) to retrieve the stuff. This method is non used often because of its high oper ating cost and complexness ( Espinosa, Bernardes & A ; Tenorio, 2004 ) .2.13.3 Recycling Procedures under Pyrometallurgy & A ; Hydrometallurgy:There are several battery recycling procedures that works by the Pyrometallurgy and Hydrometallurgy rules. Sometimes these procedures are designed for specific sort of battery, but there are some in which batteries can be recycled together with other types of stuffs. The procedures are as follows: Sumitomo: It is a Nipponese procedure which is wholly based on calcinations ( method of change overing metals to its oxide at high temperature ) at about 1000 grade centigrade in a furnace ( Tedjar et al, 2010 ) . Its cost is really high and it is used to recycle all types of portable batteries e.g. lithium-ion battery. The residues formed as a consequence of calcinations is crushed and screened. The residuary pulverization will incorporate oxides of different metals. It is non suited for recycling nickel Cd batteries.Figure: -12 Sumitomo Method of Battery Recycling( Beginning: Sequeira, 1994 ) Recytec: It is the Swiss procedure that combines pyrolysis ( thermic intervention ) , gas intervention, tear uping, rinsing, electrolysis ( for non-ferrous substances ) followed by magnetic separation and other physical interventions ( Sequeira, 1994 ) . It is used for recycling all types of portable batteries and besides fluorescent lamps and quicksilver incorporating tubings. Initially pyrolysis is done at 550 grade centigrade in a reduction atmosphere and the waste gases produced during this procedure are passed through a capacitor for purification. The solids that left after the pyrolysis are shredded and washed with H2O to call up different salts and oxides. The oxides of manganese and zinc get dissolved in an acidic leaching process and these are at the same time separated by an electrodeposition procedure. Ferro-magnetic stuffs are separated by magnetic separation procedure from other non magnetic substances like black lead. The stuffs separated by the magnetic separation procedure so enter into an electrochemical system and from here the stuffs are separated by anodal disintegration method. The method of anodal disintegration offers 99 % pureness of the metals recovered.Figure: -13 Recytec Method of Battery Recycling( Beginning: Sequeira, 1994 ) This procedure does non recycle nickel Cd batteries. The initial investing for this procedure is smaller than that for the Sumitomo procedure, but its operating cost is high ( Espinosa, Bernardes & A ; Tenorio, 2004 ) . Another advantage of this procedure compared to Sumitomo is its first-class recycling efficiency of 95 % i.e. merely 5 % of secondary waste. TNO: It is a Hydrometallurgical Dutch procedure for the recycling of bit batteries. This procedure developed two recycling options one for alkaline family batteries and the other for nickel Cd batteries. The option for family batteries was non commercially implemented ( Espinosa, Bernardes & A ; Tenorio, 2004 ) . In this procedure the waste batteries are foremost shredded into little ( all right ) fractions. Many metal and plastic parts can be retained from these all right fractions. These all right fractions are so subdivided into two fractions: magnetic and nonmagnetic. Then both these fractions will be leached with hydrochloric acid to fade out the Cd content in it. The magnetic atoms like Fe and Ni will be separated by magnetic separation procedure after the leaching procedure. These separated Fe and nickel atoms will incorporate Cd and this Cd can be removed by extraction procedure with the aid of TBP. The Cd salt from the infusion will be farther removed by acerb extraction. The sourness of the so formed Cd chloride is so adjusted to precipitate residuary Fe as ferrous hydrated oxide and it is separated by the filtration procedure. By utilizing the electrolysis procedure metallic Cd will be recovered and the staying solution is discarded ( Sequeira, 1994 ) . Accurec: It is a German Pyrometallurgical procedure to recycle batteries chiefly used for nickel Cd batteries. This procedure has got several advantages like: it is merely a one measure procedure compared to other procedures, the emanation of green house gases to the ambiance is less ( & gt ; 0.01g/h ) , it is energy efficient and a extremely secured procedure ( Accurec, 2010 ) .Figure: -14 Accurec Method of Battery Recycling( Beginning: Accurec, 2010 ) Snam-Savam: Gallic procedure for Ni Cd battery recycling, wholly based on Pyrometallurgy method ( Espinosa, Bernardes & A ; Tenorio, 2004 ) . This is a closed furnace battery recycling technique in which Cd is distilled at 850-900 grade centigrade. This method offers 99.9 % pureness of the cured stuffs ( Sequeira & A ; Moffat, 1997 ) . Sab Nife: Swedish procedure for Ni Cd batteries. This method is besides based on Pyrometallurgy. In this method the Cd is distilled at high temperature ( 850-900 grade centigrade ) in a reduction atmosphere. Then the Cd is chemically leached with the aid of sulfuric acid and eventually Cd is recovered from the leachate by electrolysis ( Sequeira & A ; Moffat, 1997 ) . Atech: This procedure is based on the physical intervention of cast-off batteries ; it is holding relatively lower cost than the other types of recycling procedures but the pureness of the cured stuffs will non be high. It is used for recycling all types of portable batteries. Recycling Companies does non trust on any individual method or procedure but it uses the combinations of many methods and procedures for the recycling of assorted types of batteries, as it is apparent that there are many types of batteries holding different forms, size and chemical composing. So, the company uses the method and procedure which are suited for the peculiar set of batteries.Table aa‚ ¬ † 11: Valuable Materials that can be recovered by Battery Recycling:Name of the BatteryMaterials that can be RecoveredLead Acid Lead, Polypropylene, Gypsum Zincs Based Steel, Zinc, Manganese Nickel Cadmium Nickel, Steel, Cadmium Lithium-Ion Cobalt, Steel Silver Oxide Silver, Steel Mercuric Oxide Mercury, Steel ( Beginning: G & A ; P, 2010 ) These recovered metals and stuffs has got many applications like: lead and Cd can be used for doing batteries once more, steel and Ni can be used in the steel industry, polypropene can be used for doing battery instances, gypsum can be used for agricultural intents, Co and Ag can be used in electronic and photographic industries etc. Overall E-waste is really insecure for the environment and for the human wellness. On the other manus if proper recycling Centres are established, the economic system as a whole would be benefited and there would be fewer loads on natural resources like gold, Cu, aluminum, Ag and other cherished metals and stuffs. In this manner the reuse rate would be increased and less emanation of green house gases would happen. It would be good for the environment, human wellness and national economic system of the UK to set up proper and dedicated recycling Centres to better the status. UK particularly needs it, as it has the highest figure of computing machine users. As per estimated information there are at present 360 million computing machine users in UK ( Internet World Statistics, 2009 ) . One can easy do appraisal of the volume of E-waste, maintaining in head the maximal life of computing machines and replacing in UK.2.14 Decision:From the reappraisal of the available literature, it can b e argued that E-waste is earnestly really unsafe for the environment and for the human wellness every bit good. The whole universe needs to take proper enterprise for managing E-waste and there should be dedicated recycling Centre for it. Although, there are enterprises that have been taken but those are non plenty as the measure of E-waste is turning twenty-four hours by twenty-four hours. The authoritiess across Europe and the authorities of UK have enacted Torahs and directives for extenuating the ill-impact of E-waste. After the earth acme in 1992, two ordinances have been enforced to extenuate the ill-effect of E-waste i.e. the Swiss ORDE ordinance and EU WEEE ordinance. Under both the ordinances, the list of electronic points is by and big same and contains about the same list. The turning market for Personal computers and its incursion and replacing markets in developed states like UK and high obsolescence rate have made WEEE as one of the fastest turning waste watercourses. Puckett & A ; Smith ( 2002 ) approximately estimate the chemical and non-chemical substance nowadays in E-waste and it is truly really flooring as the measure projected could be highly harmful for the environment and human wellness. Precisely, it could be wellness jeopardy as the chemicals present in E-waste are lead, Cd, quicksilver, plastics etc ( Culver, 2005 ) . If these chemical substances and metals are burned, it will hold terrible impact on the environment and on the human wellness. Widmer et Al, ( 2005 ) say that these E-waste contains extremely toxic chemicals and the paradox is that the UK and EU is bound to dispose E-waste within their ain geographical country as they are obliged to follow the directives because the directives of the Basel Norms prohibits them to merchandise with Non-OECD states. The UK authorities is really serious for the environmental protection and it explores what actions might be taken and poses inquiries, on which remarks and suggestions are invited from a scope of participants including the general populace. Phillips et Al ( 1998 ) argues that there is an pressing demand for the effectual protection of the environment and prudent usage of natural resources, so that the sustainable development programme could non be hampered. The direction of E-waste is acknowledged as indispensable to the sustainable development in UK. Earlier, the E-waste has used to be disposed through land fill and incineration. Landfill is / was non an effectual manner to dispose E-waste as it is non bio-degradable and used to harm the birthrate of the land. Incineration is besides really unsafe as it can breathe a batch of harmful gases and substances. Spalvins et Al ( 2008 ) and Dagan et Al ( 2007 ) argued against the disposal of E-waste along with MSW as the toxic features could non be mitigated through landfill and could dispute regulative conformity. To get the better of this serious menace authorities has introduced the construct of EPR both lawfully and operationally. It involves dealing cost, aggregation cost, recycling cost and other types of costs. The makers besides have to negociate with recycling Centres and to place the aggregation centres so that E-waste could be collected expeditiously and economically. The makers are now bound to do such electronic merchandises so that at least 70 % to 80 % ( by weight ) of the stuffs could be collected from recycling and the reuse rate of stuffs must non less than 50 % by weight so that natural resources could be protected. There are presently assorted theoretical accounts have been adopted for the direction of E-waste. Among that the four stage theoretical account is really effectual. Another extension of the EPR is the ARF. It is collected at the clip of purchase of electrical equipments and besides from the terminal users, so that the recycling procedure could be financed once the merchandise is discarded by the terminal users. The cast-off E-waste particularly the personal computing machines bits are valuable in the sense that it carries metals about 70 % of the weight of computing machines and are reclaimable. This is the major drive force behind the recycling of E-waste as every company want to understate the input cost and maximize the profitableness. Earlier Pyrometallurgy is used for the recovery of valuables metals from the bit E-waste. However there are some failings in this method. It was non really friendly for the environment as there is more emanation of green house gases. Cui & A ; Zhang ( 2008 ) argue that the retrieval of energy from E-waste pave the manner for utilizing plastics in E-waste. Now it has been apparent that thermic processing of E-waste delivers an attack for recovery of energy from E-waste if a broad runing emanation control system is installed. The batteries that are the terminal merchandises of E-waste recycling can be farther recycled to retrieve and divide cherished stuffs like steel, Ag, nickel etc and toxic substances like lead, Cd etc severally. The recovery and separation of these metals and stuffs will farther lend to the economic system of the state and sustainability of the environment. There are several methods and procedures for battery recycling and no same method or procedures can be used for different batteries since they differ in their chemical composing. The procedure of Pyrometallurgy and Robust Pyroprocess are sooner used by the recycling companies in Europe. From the available literature it can be argued that most of the above mentioned recycling procedure / methods offer about 90 % to 95 % pureness of the cured metals and stuffs which is an advantage. On the other manus these methods have got many disadvantages. Most of these procedures / methods that works under the rule of Hydrometallurgy are complicated as it needs to undergo many other sub-processes in between ( except few procedures like Accurec ) , e.g. it needs to undergo tear uping procedure before the existent recycling. Hydrometallurgy procedures are most of the clip dedicated to merely a peculiar type of battery chemical science / little scope of different chemical sciences ( Jan Tytgat, 2010 ) . Higher energy demand is another disadvantage of these methods ( chiefly for procedures that works under Pyrometallurgy rule ) . For illustration most the methods required energy of about 1000 degree centigrade or more. As consequence of it the operating cost is high. Discarding the terminal merchandise which contains valuable metals ( which can still be recovered ) is another disadvantage. Discarding of the staying solution after the electrolysis of Cd in the TNO procedure is an illustration for this. As mentioned above the loss of staying 5 % to 10 % pureness of cured stuffs is besides an of import affair that needs to be considered

Spatial Interaction in Supply and Demand

Spatial Interaction in Supply and Demand Spatial interaction is the flow of products, people, services, or information among places, in response to localized supply and demand. It is a transportation supply and demand relationship that is often expressed over a geographical space. Spatial interactions usually include a variety of movements such as travel, migration, transmission of information, journeys to work or shopping, retailing activities, or freight distribution. Edward Ullman, perhaps the leading transportation geographer of the twentieth century, more formally addressed interaction as complementarity (a deficit of a good or product in one place and a ​surplus in another), transferability (possibility of transport of the good or product at a cost that the market will bear), and lack of intervening opportunities (where a similar good or product that is not available at a closer distance). Complementarity The first factor necessary for interaction to take place is complementarity. In order for the trade to take place, there has to be a surplus of the desired product in one area and a shortage of demand for that same product in another area. The greater the distance, between trip origin and trip destination, the less likelihood of a trip occurring and the lower the frequency of trips. An example of complementarity would be that you live in San Francisco, California and want to go to Disneyland for a vacation, which is located in Anaheim near Los Angeles, California. In this example, the product is Disneyland, a destination theme park, where San Francisco has two regional theme parks, but no destination theme park. Transferability The second factor necessary for interaction to take place is transferability. In some cases, it is simply not feasible to transport certain goods (or people) a great distance because the transportation costs are too high in comparison to the price of the product. In all other cases where the transportation costs are not out of line with price, we say that the product is transferable or that transferability exists. Using our Disneyland trip example, we need to know how many people are going, and the amount of time we have to do the trip (both travel time and time at the destination). If only one person is traveling to Disneyland and they need to travel in the same day, then flying may be the most realistic option of transferability at approximately $250 round-trip; however, it is the most expensive option on a per person basis. If a small number of people are traveling, and three days are available for the trip (two days for travel and one day at the park), then driving down in a personal car, a rental car or taking the train may be a realistic option. A car rental would be approximately $100 for a three-day rental (with for to six people in the car) not including fuel, or approximately $120 round-trip per person taking the train (i.e., either Amtraks Coast Starlight or the San Joaquin routes). If one is traveling with a large group of people (assuming 50 people or so), then it may make sense to charter a bus, which would cost approximately $2,500 or about $50 per person. As one can see, transferability can be accomplished by one of several different modes of transportation depending on the number of people, distance, the average cost to transport each person, and the time available for travel. Lack of Intervening Opportunities The third factor necessary for interaction to take place in the absence or lack of intervening opportunities. There may be a situation where complementarity exists between an area with a high demand for a product and several areas with a supply of that same product in excess of local demand. In this particular case, the first area would be unlikely to trade with all three suppliers, but would instead trade with the supplier that was closest or least costly. In our example of the trip to Disneyland, Is there any other destination theme park identical to Disneyland, providing an intervening opportunity between San Francisco and Los Angeles? The obvious answer would be no. However, if the question was, Is there any other regional theme park between San Francisco and Los Angeles that could be a potential intervening opportunity, then the answer would be yes, since Great America (Santa Clara, California), Magic Mountain (Santa Clarita, California), and Knotts Berry Farm (Buena Park, California) are all regional theme parks located between San Francisco and Anaheim. As you can see from this example, there are numerous factors that could affect complementarity, transferability, and lack of intervening opportunities. There are many other examples of these concepts in our daily lives, when it comes to planning your next vacation, watching the freight trains roll through your town or neighborhood, seeing the trucks on the highway, or when you ship a package overseas.

Research a current ethical event, explain the event, give some Paper

A current ethical event, explain the event, give some background, then argue for or against the issue - Research Paper Example This action was done to prevent the further loss of life and to bring the sanity back to Syria. As a result of these airstrikes many innocent people were also killed. Many people and experts criticized the actions of EU and the USA on the grounds of their actions being destructive and unethical. They claimed that these airstrikes have worsened the situation for ordinary people of Syria and has intensified the rebellion. (2011) The issue has two sides to it. It was an ethical dilemma. Many people believed that the airstrikes carried out by the USA and European Union was wrong because many innocent people were killed. They also supported their claims by saying that these attacks were a violation of democracy of a country. On the other hand people who were supporting these acts came up with their own supporting arguments. These people claimed that the USA had to intervene to prevent the further bloodshed in the anarchy-hit nation. They also used various ethical frameworks to their advan tage. They used the utilitarianism and deontological framework to their advantage, They stated that these actions had more positives than negatives for the entire Syrian community and that the motives behind these actions were meritorious, hence these attacks are justified.

The grieving process Essay Example | Topics and Well Written Essays - 750 words

The grieving process - Essay Example determinants of grief differ according to various factors such as significance attributed to the loss, circumstances surrounding the loss, and utilization of support networks. The grieving process and stages features in Elisabeth Kubler-Ross book, On Death and Dying (1969). Although, the five stages can be regarded as universal, they do not necessarily follow a linear order. Sadness (feelings of pain and sorrow) is the prominent feeling experienced in grief triggered by feelings of emptiness or despair, although distracted by denial, anger, guilt, and fear, which trigger defense mechanisms (Shives, 2008). Shock is mainly an initial response to loss as the individual seeks emotional protection from the overwhelming loss. Most individuals rationalize the loss with numbed disbelief, in an effort to escape from reality (Webb, 2011). The denial and isolation plays out when individuals perceive it to be a mistake. Denial is predominantly a temporary defense followed by isolation. Individuals normally replace denial with feelings of frustration, rage, resentment, and envy. Anger is a common response to feelings of frustration, abandonment, or powerlessness (Webb, 2011). The anger may be directed towards self, God, or life due to the perceived injustices occasioned by the loss. Pain and guilt features less extreme self-reproach regarding things that the griever feels failed to do prior to the loss (Timby, 2009). Bargaining stems from the realization that the individual cannot derive much from anger, and thus opts to make a last ditch negotiation with fate and God. This is heralded by feelings of helplessness and vulnerability. The patient or individual normally reverts to some form of childhood response. Bargaining in this case may feature an endeavor to downplay loss demonstrated by an alteration in behavior (Webb, 2011). Depression arises when the individual can no longer deny or ignore the loss as the feelings of immense loss sinks in, and anger and