Inmates perspective Law Research Paper Example | Topics and Well Written Essays - 750 words

Inmates perspective Law - Research Paper Example This essay focuses mainly on the features like the challenges in the prison, causes for violence with a detailed discussion of the constitutional rights entitled by the inmate prisoners. Life Inside the Prison As the number of crime increases with the technology in its growth, a number of sophisticated crimes is reported very frequently whose punishment is often awarded with the confinement in isolated unitary cells for round the clock locking up. Real stories of the prisons reveal the hardships of the prisoner s in the super-maximum security centers with the real-life effect of a mythological hell. A majority of the prisons were meant for inflicting sensory deprivation on the inmates. They were locked up for the whole day within a congested cage with a direct exposure to direct lights and unpleasant noises causing acute levels of sleep deprivation. As Kamel and Kerness (2003) point out, most of this isolation was constituted as a result of the situation of life threat to the prisone rs as expected by the jail authorities. Apart from the peripheral woes of isolated prisoners, a large number of prisoners are subject to physical and mental harassment of the organized groups of existing prisoners who largely target on political prisoners. In some other cases, there are serious threats of violent behavior from gangster prisoners who target new inmates for assault. Gruesome incidents of sexual abuse of female prisoners and homosexual harassment of young male prisoners are common miseries apart from the routine torture at dining halls and bathrooms of American prisons. Many a prisoner complains about the cruelty of the jail guard using mechanical and electrical devices for torture, beating and shackling in painful positions and sleep deprivation. Many of such extreme tortures results in deaths or at least permanent disfiguration or physical disability. Amidst the strict laws of regulation of constitutional ways of the punishment with guaranteed rights to the inmate pr isoners, prisons are filled with various negative elements that badly affect the lives of inmate owing much to the lenience of the jail authorities. Overcrowding in Prisons Increased number of reported crimes is the indicator for the excessive influx of the prisoners in recent years. The government is ignorant about the fact that the prison supervision and healthy lives of prisoners cannot be guaranteed if the prisons are overcrowded. The impact of this scenario is intensive as the prisoners are deprived of their constitutional rights of health and sanitation, and in most of the cases, their lives are at stake as the supervisory authorities do not maintain a strict control of discipline among violent inmates. â€Å"Overcrowding directly affects prisoners’ mental and physical health by increasing the level of uncertainty with which they regularly must cope† (Prison Overcrowding, p.3). A continuous exposure to unpleasant situations results in aggravated demoralization am ong the target groups inside the prison. Moreover, overcrowded situations inside the prison account for the imposition of cognitive and emotional strain on them. Repeated sessions of heavy physical strains of performing the tasks assigned by the authorities as well as the deprivations of their rights accumulate frustration among them. As such, even a minute case of

Their impact on air pollution in aspect of chemistry Essay Example for Free

Their impact on air pollution in aspect of chemistry Essay INTRODUCTION The world’s engine and turbine systems have so far been powered by fossil fuels. In recent times however, there has been the rise of green gas or alternative energy use. Even cars that were traditionally powered by diesel and petroleum derived fuels have en modified to use green gas and fuel cell systems. Hybrid vehicles use energy systems that can be recharged and the movement system of the vehicle depends on refuel ling procedures like the use of green gas. The hybrid nature refers to the ability of the vehicle to use a blend of vehicles that are not necessarily limited to the conventional fossil fuels. In 2001 the American administration embarked on a green vehicle project popularly known a freedom car initiative. Whereas the final goal of the initiative was to reduce pollution through the use of fossil fuels-free-vehicles, hydrogen is derived from the same fossil vehicles and is used t drive vehicles. In spite of this hybrid vehicles have had an impact on the nature and composition of environmental gas. The air pollutants form fuel burning appliances occurs as mixture of gases, solids (suspended particles) and liquids suspended droplets. A mixture of particulates and droplets is commonly called aerosol; for this particular paper the tem smoke will refer to the entire mixture f pollutants from combustion; aerosol plus gases. â€Å"The pollutants in biomass smoke are essentially entirely created during the combustion process used and it does not exists in fuel before hand† as is addressed in Biofuels air pollution and health by Smith K. R pages 28. METHODOLOGY The study focused on the levels of concentration of green gas products. Other emission form hybrid vehicles and chemical effects on the environment. This calls for undertaking a number of activities including recognizing a particular chemical pollutants emitted from hybrid vehicles as a potential environmental concern. OBJECTIVES OF THE STUDY The research undertook a major step in recognizing the emission form hybrid vehicles in both qualitative and quantities manner. It also monitored the chemical emission in hybrid vehicles particulate their impact on air pollution. In particular the study focused on levels and chemical effects of carbon monoxide, carbon dioxide, total hydro carbon, nitrogen oxides, dark smoke and particulates. PROCEEDINGS Results indicate that hybrid vehicles and other auto mobiles are the major source of primary air pollutants. Transpiration is responsible for major air pollutants (over 50%) in the USA. â€Å"carbon monoxide and hydrocarbons are major pollutions and it is for this reason that transportation is generally considered responsible for about 50% or current air pollution† as documented in studies in environment science 44, highway pollution by Ronald S. Hamilton page 10. The result from individual pollutants obtained from hybrid vehicle emissions are independently detailed as shown below. Carbon monoxide It was identified as the largest part of hybrid vehicle emission. In complete of fossil fuels in hybrid vehicles is its chief source. â€Å"Without pollution controls these engines emits an average of 2. 9lb. Of CO for each gallon of gasoline burnt, or nearly one ton of co for each tow tons of fuels consumed† chemistry man and environmental change by J Calvin Giddings. This clearly indicates internal combustion engine is larger factor in world wide CO emission; it is actually greatest factor in any urban environment. Estimated Yearly World Wide Emission of CO by major sources Source Millions of Ton per year emitted Gasoline 123. Coal 12 Non Commercial fuels 44 Particulates The concentration of airborne particulate matter emitted at combustion was found to vary with burning parameters. Particulate quality measured depended on temperature of smoke at a site where their collection from a hybrid vehicle occurred. At higher temperature more particulates are in vapor form and pass through trapping filters. Cooler gas has more of their material being condensed from vapor phases hence more is collected. Volatile organic compounds(VOCs) Is a mixture of compounds with lower boiling point fractions of fuels and lubricants as well as partly combusted fuels. They are emitted into atmosphere at refilling through leaks in crack case and from the tail pipe. VOCs are a complex mixture of aromatic, olefins, aldehydes, ketones and aliphatic. Nitrogen Oxides They include nitrous oxide, N2O nitric oxide, nitrogen dioxide, dinitrogen trioxide and Dinitrogen pentoxide N2O5. The paper has emphasized on nitric oxide and nitrogen dioxide since the rest are in relatively low concentration and low toxicity. Nitrogen oxide was produced in high concentration, has lower toxicity and reduced effects on health. It is converted to NO2.

Overview Of Solar Cars Engineering Essay

Overview Of Solar Cars Engineering Essay Renewable energy is vital in the world today as in the near future non-renewable sources of energy will become scarce. The solar powered car is a step in saving these non-renewable sources of energy. The basic principle of the solar car is to use energy that is stored in a battery during and after charging it from a solar panel. The charged batteries are used to drive the motor which serves as an engine and moves the vehicle in a reverse or forward direction. Overview of Solar Cars Advantages: No longer needed to purchase gas or any other type of fuel Solar cars have no regular expense besides maintenance and repairs Doesnt produce any greenhouse gas emissions so it is environmentally friendly The use of solar cars as a combustion engine replacement will significantly reduce greenhouse emissions and improve air quality around the world Solar cars produce no noise Disadvantages: Solar cars dont have the same speed or power as a regular car that runs on gas While sunlight is free, the creation of PV cells to capture that sunlight is expensive. Costs for solar panels are steadily declining (22% cost reduction per doubling of production volume). The weather can directly affect the performance of the car, especially if it is dark outside Possible system layouts Fig.ure 1 : Basic block diagram representation of a solar vehicle Source: Wamborikar, 2010. Solar cars are powered by the suns energy. The main component of a solar powered car is its solar array or panel, which collects the energy from the sun and converts it into usable electrical energy. The solar cells collect a portion of the suns energy and store it into the batteries of the solar car. Before that happens, a peak power tracker (maximum power point tracker) converts the energy collected from the solar array to the proper system voltage, so that the batteries and the motor can use it. Once the energy is stored in the batteries, it is available to be used by the DC motor and motor controller to drive the car. The motor controller adjusts the amount of energy that flows to the motor to correspond to the throttle. The motor uses that energy to drive the wheels. The primary energy source for a solar powered car is the battery. The battery has a number of individual batteries connected inside which are in series or parallel. Each battery is typically 6V or 12V, and multiple batteries are connected in series or parallel to acquire the optimum system voltage. A single battery is made from multiple cells contained within the battery housing. The overall battery voltage is chosen depending on the motors EMF constant and the desired nominal driving speed. In order to get the most efficient operation of the drive system, the battery voltage is chosen so that the motor controller can operate with minimal pulse width modulation at the maximum speed of the car. Nevertheless, the battery voltage, especially for lead-acid batteries, fluctuates considerably around the nominal battery voltage, from full charge to maximum discharge. This is why, the nominal battery voltage is chosen so that the lowest possible battery voltage is able to sustain a reasonable speed. An alternative solution to this problem is to put in a boost or buck converter in the motor controller so that a desirable speed can be obtained for any battery voltage. Fundamentals and Application of Photovoltaics in Solar Vehicles The bond model uses the covalent bonds joining the silicon atoms to describe semiconductor behaviour. In the figure below, it illustrates the bonding and the movement of electrons in a silicon crystal lattice. Figure 2: Representation of covalent bonds in a silicon crystal lattice Source: Wenham, 2007At low temperatures, the bonds are intact and the silicon behaves as an insulator. At high temperatures, some bonds are broken and conduction can occur by two processes: electrons from broken bonds are free to move and electrons from neighbouring bonds can also move into the hole created in the broken bond, allowing the broken bond or hole to propagate as if it had a positive charge. It is also possible to shift the balance of electrons and holes in a semi conductor (silicon crystal lattice by doping it with other atoms. Atoms with one more valence electron than the semiconductor are used to produce n-type material. Meanwhile, atoms with one less valence electron results in p-type material (Wenham, 2007). This can be seen in figure 3. Figure 3: Source: Wenham, 2007 Figure 4: Diagram of a P-N Junction Source: Nave, 2005. A p-n  junction is formed by joining  n-type and  p-type semiconductor materials. Since the  n-type region has a high electron concentration and the  p-type a high hole concentration, electrons diffuse from the  n-type side to the  p-type side. Similarly, holes flow by diffusion from the  p-type side to then-type side. If the electrons and holes werent charged, this diffusion process would continue until the concentration of electrons and holes on the two sides were the same. However, in a  p-n  junction, when the electrons and holes move to the other side of the junction, they leave behind exposed charges on  dopant  atom sites, which are fixed in the crystal lattice and are unable to move. An electric field forms between the positive ion cores in the  n-type material and negative ion cores in the  p-type material. This region is called the depletion region since the electric field pushes the free carriers out, hence the region is depl eted of free carriers. A built in potential (Vbi)  is formed due to the electrified created at the junction. Figure 5 Source: Wenham, 2007When sunlight falls onto the semiconductor material, photons with energy (Eph) lower than the band gap energy (Eg) interact insubstantially with the semiconductor, passing through it as if it were transparent. But, photons with energy greater than the band gap energy (Eph > Eg) interact with electrons in covalent bonds, using up their energy to break bonds and to create electron-hole pairs which can then move about independently. Also, higher energy photons (red light) are absorbed closer to the surface of the semiconductor than lower energy photons (blue light). The open circuit voltage (VOC) of a solar cell is the voltage measured when there is no current passing through the cell. The top side of the solar cell is of negative voltage and the bottom is positive. The open circuit voltage is independent of the size of the solar cell, and is determined by the materials the cell is made of (refer to Appendix 2). The short circuit current (ISC) of a solar cell corresponds to the current measured when the solar cell is short circuited (Fig. 2.11), the voltage equals 0. The electric current  ¬Ã¢â‚¬Å¡ows from the bottom (+) of the cell to the top of the cell (-) when the solar cell is under illumination (refer to Appendix 2). In advanced solar cars, they include a Maximum Power Point Tracking (MPPT) which maximizes the amount of current going into the battery from the solar array by lowering the panels output voltage which increases the charging amps to the battery. The maximum power output of a solar cell is at the maximum power point (MPP), wher e the product of voltage and current is a maximum (refer to Appendix 2). When solar cells are connected in parallel, the output current is the sum of the currents from the individual cells, and output voltage remains the same to that of a single cell (proven by data, refer to Appendix 1). When solar cells are connected in series, the output voltage is the sum of the voltage from each cell, where the output current stays the same (proven by data, refer to Appendix 1). Therefore, the optimum alignment for solar cells on a solar car would be in series. This is because the MPPT needs more voltage as it extracts the solar cells output voltage in order to maximize the amount of current going into the battery. Source: Blimpy, 2010. How a solar cell works Figure 6: A diagram of a solar cell. Source: Lollini, 2010. The photovoltaic effect used in solar cells allows direct conversion of light energy from the sun into electricity, by the generation and transport inside a semiconductor material, of positive and negative electric charges, through the action of light. This material features two regions, one exhibiting an excess of electrons, the other an electron deficit, resistively referred to as n-type doped and p-type doped. When the two are brought into contact with the silicon, excess electrons from the n-material diffuse into the p-material. The initially n-doped region becomes positively charged and the initially p-doped region is negatively charged. An electric field is thus made between them, tending to force electrons back into the n-region and holes back into the p-region. Then a p-n junction is setup and by placing metallic contacts on the n and p regions, a diode is acquired. When the p-n junction makes contact with light, the photons having energy equal to or hi gher than the width of the forbidden band or band gap yield their energy to the atoms, where each photon causes an electron to move from the valence band to the conduction band, leaving behind a hole, also able to move around the material thus, giving rise to an electron-hole pair. If a load is to be positioned at the cells terminals, electrons from the n-region will migrate back to the holes in the p-region, by way of the outside connection, giving rise to a potential difference- an electric current passes. Importance of Correct System Design and Sizing / Non-shading The main point that should be kept in mind while making a solar vehicle is the mounting of the solar panel. The panel should be mounted in such a way that it receives maximum sun rays so that it gives maximum efficiency. Since the sun is at a different angle to the ground all the, so the solar panels need to be directed according to this positioning.  The ideal situation is when the suns rays are colliding with the panels at a perpendicular angle of 90 °(proven by data, refer to Appendix 4). This  maximizes  the amount of energy hitting the panels and being produced. The two factors that affect the angle as such are controlled by the orientations (north, south, east, and west) and the angle of the panels from the ground. The main feature of any solar is its array of solar cells. An ideal solar cell would be made of expensive gallium arsenide which are nearly 30% efficient. However a cheaper alternative can be used such as ultra pure monocrystalline silicon which can reach efficiencies of over 20%. Selecting the solar cell with higher efficiency means the less surface area needed so the solar vehicle is able to carry less weight and travel at a faster speed. Therefore, itd be recommended to use a small solar panel with a high efficiency rate so then sizing is not important. For maximum power efficiency in a solar powered car, the solar panels should be in full contact with the suns rays. If a single cell is somewhat shaded by even a small object, it can create a power drop as much as 50%. This is because the cells in a panel are connected in a series string, so if one cell is shaded, then the rest dont work properly (proven by data, refer to Appendix 5). To reduce the effects of shading, the strings are usually kept short and paralleled as much as possible. Having lots of parallel strings is good, because whatever currents are generated can be added together, while the voltage of each string remains relatively similar with or without light. Voltages of parallel strings are taken as the average voltage of each string. An example of how a module might be wired is shown below. Source: Sanghster, 2006. Safety Issues Since the solar powered car is run by a DC motor, there are safety issues with direct current. If a person is electrocuted, electric currents can produce severe burns in the body, particularly at the points of contact to the circuit, as the electrical power dissipates across the bodys resistance. Electric shock can only occur when contact is made between two points of a circuit, and when a voltage is applied across a victims body. Since direct current moves in one direction through a conductor, it has the tendency to incite muscular tetanus, even at low voltages. Victims are often unable to let go of a DC conductor because of the continuous motion and stable voltage. Also, DC electricity tends to make the heart stand still. Conclusion It is essential that the design of solar cars are efficient, safe and takes into account the specific requirements and limitations. For example, in order for the solar car to run on solar power it needs a lot of power and an optimum angle needs to be decided to maximise this power output. It is best to use a MPPT to maximize the current going into the battery and to choose an efficient solar array or panel. This being said, the solar car can have a significant impact on the reduction of unhealthy greenhouse gas emissions and help prevent global warming. We need to make use of solar powered cars so that we can reduce our dependence on fossil fuels.

The Triangular Silas Marner Essay -- Silas Marner Essays

The Triangular Silas Marner      Ã‚  Ã‚  Ã‚  Ã‚   As a result of betrayal, Silas Marner of George Eliot's so titled novel becomes a man in body without incurring any of the duties normally associated with nineteenth century working class adults. Eliot creates these unusual circumstances by framing our title-hero so it appears to his comrades that he has stolen money. Thereby, she effectively rejects innocent Marner from his community and causes him to lose his fiancà ©. At this pivotal moment in Marner's life, just as he is about to assume fully the role of a man, depended upon as such by his neighbors, future wife and probable children, he is excised and does not successfully complete the transformation. Accordingly, he moves on to a new place, Raveloe, with the same carefree lack of responsibility as a boy, who is clearly unable to act like the man he seems he should be.    By denying Marner the possibility of a traditional family from the start, Eliot immediately brings forward the question of family values. A question that she answers in the course of her novel. Jeff Nunokawa, in his essay The Miser's Two Bodies: Silas Marner and the Sexual Possibilities of the Commodity, claims that Eliot "simply" shows "support for family values" (Nunokawa 273), and that she "encourages" them through her narrative (Nunokawa 290). As evidence, he cites quotations from the text that paint, as he puts it, "men [living] without women... in a barren region" (Nunokawa 273). Adeptly, he points to Eliot's line, "The maiden was lost... and then what was left to them?'" (Nunokawa 273). Furthermore, Nunokawa goes on to label the moral implications of the novel as those of a "blunt dichotomy," saying that Eliot hands her reader "the ... ... for it is the middle ground between its own two opposites, which include the possibilities of not having a family at all and going with the one you are biologically given. Silas Marner is not a tale of black and white, right and wrong, it is more complex and aims to depict at least three angles -- if not more that I have, as of yet, failed to unravel.    Bibliography Carroll, David, "Reversing the Oracles of Religion," Casebook Series on George Eliot, Ed. R. P. Draper. London: Macmillan Press Ltd, 1977. Cave, Terence, "Introduction to Oxford World Classic's Silas Marner" (see following entry for details.) Eliot, George. Silas Marner. Oxford: Oxford University Press, 1996. Nunokawa, Jeff, "The Miser's Two Bodies: Silas Marner and the Sexual Possibilities of the Commodity," Victorian Studies, 1993, Spring, v. 36. pp. 273-390.   

Oil Spill Paper

Humans cause oil pollution. We put the boats and ships in the water, we build oil rigs and drill into the bottom of the ocean, and we dump the wrong chemicals into the ocean. Boats and ships have oil leaks just like our cars do. When we’re in the ocean, we can’t exactly clean it up with some limestone. If an oil pipe breaks, we can’t stop push a button and it stops flowing. The oil is coming from underneath the ocean so it takes us longer to stop it from flowing into the ocean. Some people don’t know, or don’t understand, that dumping the wrong chemicals can ruin our ocean and eventually, our land.Oil pollution hurts the marine environment. It is a poison to the wildlife. The oil can smother the animal, it can get in their digestive system and kill them, or it can even mess with their reproductive system and behavior. If oil were to get on the body or wings of a bird, it could make them drown because the oil is too heavy for them to fly. There are a few different ways to clean up an oil spill. Controlled burns can burn off the oil, but it’s not always a good option because the smoke harms our air. Booms and skimmer take oil off of the surface, but not below the surface.Water-oil separating devices help separate the oil from the water, but it can be pricey. Hay soaks up the oil, and leaves clean water behind. Natural recovery is the best way to clean up an oil spill. It may take a little bit longer to be fully cleaned, but it is the best way. Wave action, sunlight, natural water dispersion, and natural occurring microorganisms are the main ways oil spills can be cleaned up by natural means. Oil eating mushrooms is another way to decontaminated areas. This is known as mycoremediation, which is a term invented by Paul Stamets.Mushrooms secrete enzymes and acids that aid in the decomposition of difficult organism containments. Dr. Stamets’ treated soil with oyster mushrooms and then conducted an experiment that broke down almost all of the nontoxic components after four weeks. I think it would affect sandy shores more because the oil and contaminants can sink into the sand and soil. It can also affect the rocky shores, but not as much.http://www. waterencycolpedia. com/Oc-Po/Oil-Spills-Impact-on-the-Ocean. html http://www. cnbc. com/id/37593652/17_Ways_To_Clean_Up_The_Gulf_Oil_Spill? slide=9

Offshore structures Essay

A well structure situated at the sea, some distance from the shore is known as an offshore well. This well is normally drilled at the seabed using specially designed drilling equipments and different drilling techniques are used. What are deviated wells, doglegs? A deviated well is a horizontal well drilled at an angle usually greater than 80 degrees to the vertical. It involves drilling horizontal and slant-hole wells which enhance better intersection of vertical structures in tight formations. Deviated well is essential since it prevents the fracture of vertical lines, which enhance the permeability of natural gas much higher than the unfractured rock. They increase production rate and minimize cost of ecological damage. Deviated wells can be grouped as unintentionally deviated and intentionally deviated. Unintentionally deviated implies that the well lies on a vertical or near a vertical plane. A dogleg is a sharp deviation or bend in a well’s direction or inclination. They are characterized by being abrupt, decreasing or increasing, excessive long and permissible. It can also referred to as an elbow . . Include a section on offshore well structure /design explaining how it is designed Offshore well structures are designed to bear up all foreseeable conditions which may be weather related as well as environmental loading factors such as earthquake induced loads. Accidental loads such as collisions, fires and explosions are also considered when designing a well structure . In designing this, a floating offshore structure which is polygon shaped and used for drilling or production purpose is used. It contains apertures on its sides meant for reducing the movement of the structure as a result of undersea currents. The structure further consists of a production platform extending above the water surface, and a series of buoyancy tanks which provide the structure with the ability to float. Apertures, surrounded by coamings, is located on each side of the structure to allow ocean currents to flow laterally through the center of the structure. It also makes it possible and easy for oil and gas can dissipate from the center of the structure if a rupture occurs. A fluid retention tank and ballast in the structure lowers the center of gravity of the structure and make it more stable, and a centerwell running through the longitudinal center of the structure allows one or more risers to run from the ocean floor to the operating platform. The structure can then be moored to the sea floor through the use of a catenary mooring system. . Bibliography Chow F I (Houston, TX), Freedman G W (Kingwood, TX), Kemper J H (The Woodlands, TX), Devlin P V (Pearland, TX), Polygon floating offshore structure, 1999, retrieved 23 August 2008, Graff W, J, Introduction to offshore structures: Design, Fabrication, Installation. Gulf publication company, 1981, ISBN 0872016943 Lyons W,C , Standard Handbook on Petroleum Gas Engineering. Gulf Professional publishing, 2005, ISBN 0750677856 Wilson H,W, Applied Science and Technology Index. H. W Wilson Co. publishers, 2006