Thursday, November 28, 2019

The impact of UK policies on an organisation free essay sample

A report to understand how the characteristics of the UK economy, fiscal, monetary and competition polices can impact on an organisation. Within this report I hope determine in detail all the characteristics of the UK economy, government fiscal and monetary policies and how each one effects on the Tesco PLC organisation. I plan to give a clear and comprehensive look into each of the factors which build the UK economy and analyse and evaluate with strong evidence of application to theory throughout the report. The UK subscribes to a democratic, parliamentary system of governance known as the Westminster system. The structure of the administration ensures that there is an adequate separation of powers between the executive branch, led by the prime minister, the bicameral legislature and the judiciary, and that there is a system of checks and balances in place. The current population of the UK is 61. 1 million. The UK was one of the largest macroeconomys in the world. We will write a custom essay sample on The impact of UK policies on an organisation or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page It was seen to be one of the strongest and most stable economies before 2007, however post 2008 economic deceleration began and the GDP growth rate fell to 0. 7%. In 2008, the economy entered into a recession, with a predicted negative growth rate of -4. 5% for the following year. (Data monitor Statistics) The current conservative government’s main economic aims are Economic growth with more goods and services produced in the economy, alongside low inflation, little unemployment with a Fair distribution of income. (HM Treasury) Taxation comes in two forms direct taxation (taxation on income and profits) and indirect taxation this is taxation on expenditure (VAT, excise duty). The UK government spends in the region of ? 400bn a year. Over a third of this money goes in welfare benefits such as pensions, unemployment benefit and other forms of income support. The rest is spent on health, education, defence, roads, law and order and on supporting businesses and local communities. (Data Monitor Statistics) Businesses can benefit direct or indirec ndirectly from the rest of the spending. Governments supply money in the form of grants, subsidies and tax breaks (paying less tax than you should) to encourage businesses in certain areas of the economy. A business that is starting out, or is going to provide employment in a depressed area may be able to benefit from such help i. e. Tesco. Tesco is currently the fourth largest retail company in the world (Global Powers of Retailing Report) and is UK’s leading food and grocery retailer. The company operates 4,811 stores in 14 countries worldwide. It operates in the UK, other European countries, the US and Asia. The UK, Tescos largest geographical market, accounted for 67. 6% of the total revenues in FY2010. Revenues from the UK reached ? 42,254 million ($67,153 million) in 2010, an increase of 2. 2% over 2009. (Datmonitor Statistics) This is a fascinating statistic, which proves why Tesco along many other companies sufferd a hit due to the economic slowdown of 2009. The UK economy contracted 2. 4% in the first quarter of 2009, a decline not exceeded in 51 years (Office of National Statistics).

Monday, November 25, 2019

Assessing Ethanol From Cell Wall Polysaccharides Essay Example

Assessing Ethanol From Cell Wall Polysaccharides Essay Example Assessing Ethanol From Cell Wall Polysaccharides Essay Assessing Ethanol From Cell Wall Polysaccharides Essay Introduction With lifting demand for alternate fuels, ethyl alcohol is emerging as a good option for some good grounds more significantly, it can cut down pollution. The major beginning for production of ethyl alcohol is transition of biomass by agitation. Conventionally, ethyl alcohol is made from agitation of Sugarcane or maize. However they are non economical compared with costs of fossil fuels. The recent development is production of ethyl alcohol from cellulose due to copiousness of the later. However, due to legion jobs associated with separation of cellulose, and besides due to high cost involved in hydrolysis, the production is yet to be commercially employed. The Source stuffs may include wood waste, harvest residues and even some grasses. Ethanol is made from the cell wall constituents like cellulose, hemicelluloses and lignin. Breakdown of sugar from maize is much easier than the dislocation of sugar from cellulose doing the subsequently more complex. Presently the production employes two methods ; Biochemical and Thermochemical Biochemical involves involves Size decrease of natural stuffs, pretreatment by hydrolysis devising usage of either dilute/ concentrated acid or by doing usage of enzymes for transition of Cellulose to glucose and so agitation of glucose and pentose by barm and/or bacteriums, and so recovery of ethyl alcohol by desiccation. Thermochemical involves heat and chemicals breakdown cellulose to syngas. The gas obtained can be converted into ethanol thourgh pyrolysis. The advantage of thermochemical procedure is over transition of lignin which makes up one tierce of cellulosic provender stock. The procedure involves drying, transition of provender stock to syngas, transition to liquid by pyrolysis, remotion of contaminations anddistillation to take H2O from ethyl alcohol. 2. Beginnings of Cellulose 2.1 Sugar Feedstocks The major sugar provender stock is sugarcane. The other biomass provender stocks rich in sugar includes sorghum, Beta vulgaris, and fruits. Even though it is inexpensive to do ethyl alcohol from sugar, the beginnings are within the human nutrient concatenation and may adversely impact the concatenation if extended production to come into being. 2.2. Starch Feed stocks Another major beginning for ethyl alcohol is starch feedstock. The long concatenation of glucose molecules in amylum can be easy broken down and the amylum provender stocks includes corn, wheat, murphy and manioc. The Starchy stuffs will be hydrolyzed with H2O and heat for dislocation of amylum into fermentable sugar. 2.3. Cellulose feedstocks, While both the above beginnings are within the human nutrient concatenation therefore going expensive, this alternate provender stock is the most abundant 1. These cellulosic provender stocks comprises of lignin, hemicelluloses, and cellulose. Lignin which provides structural support airss major job in production of ethanol fro cellulose. The lignin encloses both cellulose and hemicelluloses and extended pretreatment procedures were needed to make the cellulose and hemicelluloses. Grasss have least lignin and trees have the highest. Compared with amylum, the cellulose has long ironss of glucose molecules with a different structural constellation. Hyrolysis is made hard by these different structural constellation along with the encapsulation of lignin. The other constituent hemicelluloses have same long concatenation of glucose molecules but with an extra constituent pentose. 3. Lignin job in Ethanol production The major job with the production of ethyl alcohol is lignin. It is ?-glucosidases that breakdowns the cellulose to saccharify. And lignin are known to suppress ?-glucosidases. Another major job is that lignin encloses the cellulose and hemicelluloses and act as a barrier forestalling the contact between enzyme and cellulose there by suppressing the transition. Enzymes will hold non polar cellulose spheres which involves in hydrolysis of cellulose. In a recent survey, it was found the lignin was able to adhere with those non polar spheres in the enzymes ( 7 ) . 3. Ethanol production procedure: 3.1. Pretreatment Pretreatment is the readying of cellulosic provender stock for hydrolysis.The chief intent of the pretreatment is to interrupt the natural bonding between cellulose, hemi-cellulose A ; lignin, decrease crystallinity nature A ; complex construction. In a survey by singh, Delignification procedure increases the output of cut downing sugars. So any anterior procedure done earlier hydrolysis to cut down lignin is considered to be pretreatment. Pretreatment methods classified onphysical, chemical, physicochemical and biological. Physical pretreatment: Physical interventions include size decrease ( milling, tear uping, mulching ) and pyrolysis. Milling: One such physical pretreatment procedure is milling i.e. , cut downing atom size. Particle size is one the cardinal factor for the sugar transition ratio. Particle size is indirectly relative to the sugar transition rate. This is due to the fact that, smaller size atoms have higher surface country that in bend helps in higher reaction rate. Singh postulated that atom size to less than 417 micrometers does non better the cellulose transition. A. E. Abasaeed A ; Y. Y. Lee found from their research that increasing the hardwood cellulose atom size, decreases the glucose outputs and increases the reaction clip at which maximal output occurs, utilizing dilute acerb hydrolysis. Pyrolysis: At higher temperature, Cellulose dislocations and we get gaseous and char merchandises. Under lower temperature pyrolysis, in presence of mild acid ( 1N H2SO4, 97 grade celcius and 2.5 hours ) , the pretreatment consequences in 80-85 % transition of cellulose to cut downing sugars. This procedure is enhanced in presence of limited O and Zn chloride. ( Yu and Zhang 2003 ) . Chemical pretreatment: Chemical pretreatment includes add-on of chemicals, which reduces the screening consequence of lignin, cut downing crystallinity and increases the cellulose puffiness. Major categorization includes Ozonolysis, Oxidative delignification, organosolv procedure and there are figure of minor categorization. Ozonolysis: The chemical compound, ozone is used to degrade lignin and hemicellulose. Degradation of lignin consequences in higher hydrolysis rate. Main advantages of ozonolysis: efficaciously removes lignin, does non necessitate elevated environmental conditions for the procedure to take topographic point and it does non bring forth toxic or repressive stuffs. However, a big measure of ozone is required, which makes the procedure expensive. Oxidative delignification: Peroxidase enzyme nowadays in the works tissue biodegrades lignin in presence of H202. This pretreatment is found to be working good with sugarcane bagasse. Fifty per centum of lignin is solubilized by 2 % H2O2 at 30 degree Celsius and 8 hour. ( Ye Sun et Al. 2002 ) Organosolv procedure: An organic dissolver mixture with inorganic accelerators ( Hcl A ; H2SO4 ) is used to breakdown the linkage between lignin and saccharide. Organic dissolver used are methanol, ethanol, propanone, ethene, ethanediol, etc.. At the terminal of the procedure, dissolvers need to be removed to avoid the repressive action on farther procedure. Physico-chemical pretreatment: These are the new pretreatments found in the last two decennaries. This type uses the combination of both physical parametric quantities and chemical features. Steam detonation: Biomass is exposed to high-pressure concentrated steam for a certain period and so its force per unit area is fleetly reduced ( 260 grade Celsius at 0.69 Mpa ) . Steam acts on complexness construction of lignocelluloses and causes hemicellulose and lignin transmutation. Surveies shows that lower temperature, long clip procedure is better when compared to the frailty versa. Residence clip, temperature and atom size are impacting factors in the procedure. Addition of H2SO4 improves the hydrolysis rate, decreases repressive merchandises and obtains complete remotion of hemicellulose. Advantages of steam detonation: Low energy demand, no recycling and effectual on agricultural residues. The restrictions of this pretreatment are that certain repressive compounds will be produced by uncomplete lignin break. Besides big measure of H2O is needed to take repressive compounds. Ammonia fibre detonation ( AFEX ) : Similar to steam detonation. Lignocelluloses is subjected to liquid ammonium hydroxide at decreased temperature ( 90 degree Celsius ) and force per unit area for a period of clip ( 30mins ) and so the force per unit area is fleetly reduced. Dose of liquid ammonium hydroxide is 1-2 kg ammonia/kg dry biomass. AFEX works better with low lignin content and smaller atom size biomass. The disadvantage is that Ammonia has to be recovered for economic issues Carbondioxide detonation: Theexplosion of CO2 would organize carbonaceous acid and increase the hydrolysis rate. This procedure obtains 75 % of theoretical glucose, which is comparatively low when compared with other two methods. Irradiation: . Irradiation like negatron beam, microwave, gamma irradiation, ultraviolet irradiations is used as the beginning of irradiation. Acid or Alkali, in little measures ( 1-5 % ) , is added to the substrate and so exposed to irradiation. Azyma found that irradiations help in disintegrating the complex construction of Lignocelluloses ( Azuma et al. , 1984 ) . Biological pretreatment: Microorganisms such as Brown-rot, whit-rot and soft putrefaction Fungis are used to degrade lignin and hemicellulose. Brown-rot can degrade cellulose, where as white and red-rot degrades cellulose and lignin. Biggest advantages of this biological intervention are that it is environmental friendly and requires really less energy input. However, the rate of hydrolysis in most biological procedure is really low. ( A.I. Hatakka. 1984 ) 3.2. Compaction One of the major restrictions of biomass transit is its low denseness. The denseness ranges from 60-80 kg/m3 for agricultural straws. Due to this, it occupies high volume doing the biomass hard for storage, transit, use and handling. Density increases over 10 times after compaction. Baling, pelletization, bulge and briquetting are the four chief types of compaction procedure done on agricultural straw. Baling is a field type compaction procedure, where all other compaction procedures are industrial type. Pelletizing and briquetting are normally found in biomass solid fuel industries, frequently called as binderless engineerings , which uses either piston imperativeness or a screw imperativeness. 3.3. Hydrolysis Hydrolysis is frequently defined as the chemical reaction type in which polymers of holocelluloses breakdown into monomers. Hydrolysis produces cut downing sugars from helocelluloses, which is comprised of cellulose and hemicellulose. Hydrolysis involves exposure of chemicals, enzymes for a period of clip at a specific temperature. Hydrolysis is the chemical reaction which involves transition of complex cell wall polyoses in the feedstocks into simpler sugar for farther agitation into ethyl alcohol. Acids and enzymes were used in ethanol production to catalyse this production procedure. Two common types of hydrolysis are Acid hydrolysis by either dilute or concentrated acid and Enzyme hydrolysis. Acerb Hydrolysis: Sulphuric acid and Hydrochloric acid are the powerful agents for Acid Hydrolysis. In-between these two, sulfuric acid is prevailing, as it was found to be better hydrolytic agent than Hcl. ( A.Singh et al. 1984 ) . In general, acerb hydrolysis requires either dilute Acid at higher temperature A ; force per unit area, or concentrated acid at low temperature. Concentrated acerb hydrolysis output high monomers than dilute acid hydrolysis.Xylan to xylose transition will be done in dilute acid hydrolysis. After this type of hydrolysis, the feedstock needs to be neutralized. Enzymatic Hydrolysis: This method of hydrolysis a a late developed method came into being by 1970 s, while the former one is being used since 19th century. Enzymatic interventions are preferred to the chemical 1s. Cellulase enzyme, synthesized from Fungi, bacteriums and workss, is the cardinal function for the reaction. Besides enzymes are of course obstructing in the palnt proteins. However, pretreatment is ver y much necessity for enzyme hydrolysis to interrupt the crystalline lignin so the enzyme can interact with cellulose and hemicelluloses. Glucose concentration is one of the hydrolysis rate-limiting factors in enzymatic hydrolysis. ( Lynd et al. 2002 ) . 3.4. Agitation Agitation the dislocation of sugar obtained from hydrolysis procedure into ethyl alcohol by action upon micro-organism. Types of agitation Separate hydrolysis A ; Fermentation Coincident Saccharification A ; Fermentation Direct Microbial Conversion ( Using thermophilic Bacteria ) Seperated Hydrolysis and agitation: Pretreatment and agitation are conducted individually and glucose concentration is one of the chief hurdlings for the procedure. Coincident sacarification and agitation ( SSF ) : This procedure requires less enzyme burden and the taint is reduced. This method is relatively faster and supply higher output. Gauss et al. , ( 1976 ) says that SSF procedure is already patented and is known as the Gulf SSF procedure. Direct Microbial transition: It combines all the three chief procedures in lignocelluloses bioconversion ( Cellulase production, cellulose hydrolysis and agitation ) . However, it has less hydrolysis rate than SSF or SHF. The being that has been most investigated for DMC method is C. thermocellum. ( Kiyoharu F. et Al. 1996 ) 3.5. Purification Removing unwanted compounds and bettering the ethanol per centum in the concluding merchandise is called purification. Distillation procedure is employed for purification. Purification is done in two stairss: Rectification, which achieves 96 % and desiccation that achieves 99.9 % 4. Options Swtich Grass The job with the current cellulosic ethyl alcohol production is due to lignin. To get the better of the job of lignin, switch grass has been tested over recent old ages due to its low degrees of lignin and high degrees of cellulose. Panicum Virgatum ( Switch grass ) can bring forth more 700 % energy than what it is supplied with. ( 16 ) The perennial works consumes low sum of H2O and it wont compete for nutrient with other harvests. The of import advantage of switch grass is that the 10 % of the genome is dedicated to cell wall and so by familial alteration it is further possible to increase the look of saccharides and finally high ethanol output. ( 18 ) Decision Cell wall polysaccrides forms the most effectual beginning for production ethyl alcohol and Fuel production by this method has large feasibleness due to abundance in Biomass handiness.

Thursday, November 21, 2019

International financial services Essay Example | Topics and Well Written Essays - 1250 words

International financial services - Essay Example Intex is a third-party cash-flow projection technique that can provide accurate data on existing collateral investments and compute cash flow projection faster and easily. This enables the stock exchange to get the information they need faster and accurately for better decision making. Second reason is high frequency transactions in secondary market. This is because of two reasons. As the transaction frequency increases, the stock exchange has less time and fewer resources devoted to the primary markets. Secondly, high frequency transactions generate higher income to stock exchanges. Therefore, they will naturally put resources in areas that give them more money. Impact to the United Kingdom companies The first impact to the UK companies is reduction in their capital base. As the stock exchange concentrates in the secondary market, the primary markets experience shortage of skilled personnel who advises them on best ways of raising maximum capital for their companies. As a result, mo st companies may opt for other sources of capital because it is extremely hard to raise capital where there is no adequate help. Secondly, most companies take longer time to raise their capital from primary markets. This is because as the stock exchange gets busy with the secondary markets, they will be long queues of companies seeking help. As a result, there will be delays in getting assistance. 2. A company has the following capital structure, and all securities issued have the same nominal price of ?4.00. 400,000 5% Debenture Stock @ ?4.00 600,000 2? Preference Stock @ ?4.00 1,000,000 Ordinary Shares @ ?4.00 (a) the value of the gearing ratio and the significance of this ratio to potential investors Stock Quantity Price /unit in ? Amount capital in ? Debenture 400,000 4 1600000 Preference 600,000 4 2400000 Ordinary Shares 1,000,000 4 4000000 Total Fixed Capital 8000000 Gearing ratio indicates the proportion of debts used to finance assets in the company. The higher the gearing r atio, the riskier is the company. This is because most of the money used is borrowed from other sources other than ordinary shares. (b) When Directors decided to distribute only forty percent of the profit (?800,000), the dividend declared on ordinary shares is given below. =?320,000  The return on investment   (c) a. The price/earnings ratio  (c) b. The concept of price/earnings ratio and the significance to future Price/earning ratio measure the value of the stock. This is because it establishes the relationship between the stock price and the company’s earnings. When price/earning ratio is high in a given stock, the forecast earning growth is also high. It is a valuable ratio because investors can use to compare values of stock of different companies. Investors normally prefer stocks with higher price/earning ratio because it indicates higher returns. 3. The concept of Right Issues as well as advantages and disadvantages to the stockholders Rights issue refers to a n alternative means of raising capital whereby, a company issues additional shares or stocks to already existing shareholders in proportion to their shareholding in exchange for cash (Banerjee, 1990). For example, a company may offer rights issue on the basis of one rights issue for every six held by the shareholders. A company does this via seasoned equity offering or primary offering market at a premium or discount. The procedure for rights issue is easy. Once the issues

Wednesday, November 20, 2019

Swallowing Essay Example | Topics and Well Written Essays - 1500 words

Swallowing - Essay Example It is anticipated that this review will contribute to the self-learning of the author, as well as extending on insights and understandings of dsyphagia within the literature at this present time. The trigeminal nerve is the largest of the cranial nerves. It is very important in swallowing due to its afferent control of general sensation to the face, teeth, gum, muscles of mastication and the anterior two thirds of the tongue (Miller, 2006). Its efferent control is of the muscles for mastication. Innervating the tensor velar palatine, the trigeminal is partly responsible for the flattening and tensing of the soft palate. Innervations of the extrinsic laryngeal muscle results in the nerve's support for the upward and anterior movements of larynx. The facial nerve's main function is its motor portion; although, its afferent portion is involved in taste sensation from the anterior two thirds of the tongue (Miller, 2006). It provides motor innervations to the sublingual and submaxillary salivary glands. More specifically, it is involved in swallowing by regulating the lip sphincter and the buccal muscles, which allows food to be held inside the mouth and also assists in pulling the larynx up and back. The glossopharyngeal (GPN) is composed of the lingual branch of the GPN (GPN-li) and the GPN-ph. Its sensory portion transits inputs from the posterior third of the tongue, the velum and the pharynx, which includes the tonsils (Miller, 2006). The glossopharygeal nerve gathers sensation from the fauces, the palatine tonsil, upper pharynx, and the back third of the tongue. Sensory fibers carry taste information from the posterior one third of the tongue. Afferent input is received from receptors located in the larynx and these are carried primarily to the superior laryngeal nerve, also known as the cough center of the medulla. The motor portion communicates outputs to the middle pharyngeal constrictor muscle and also innervates the stylopharyngeal muscle, which, together with the palatopharyngeus muscle (X nerve), elevates the palate. The stylopharyngeus muscle dilates the pharynx laterally and contributes to the elevation of pharynx and larynx. Vagus (X)The vagus nerve (X) is the most dominant cranial nerve during the swallowing process. The vagus nerve is the major efferent for the pharyngeal constrictors and is the major afferent for the middle and inferior portions of pharynx (Miller, 2006). It supplies also main efferent innervations to the palatal muscles. Branches of the vagus nerve attach to muscles of the larynx and pharynx. It is also known as the nucleus ambiguous, and it innervates branchial arch muscles of the pharynx and larynx as well as the muscles of the upper esophagus and uvula. Branches also extend to the, glossopalantine, levator veli palatine and the palatoglossus muscles making it primarily responsible for palatal functioning. One of the motor nuclei transmits motor output to the pharyngeal constrictor muscles and in this way can completely control the intrinsic musculature of the larynx. Moreover, taste buds on the root of the tongue and on the epiglottis contribute special visceral afferent fibers t o the superior laryngeal branch. General visceral afferent fibers convey sensation from the lower pharynx, larynx, trachea, and esophagus. Together with the

Monday, November 18, 2019

Communication Technology And Its Impact On Social Interaction Research Paper

Communication Technology And Its Impact On Social Interaction - Research Paper Example Employees spent most of their times on computers using emails to pass information from one part to the other, rather than with their fellow colleagues. With the concern of social welfare within a work field, communication technology has led to poor communication within the workers. In addition to this reduction of face-to-face social interaction, the level of social support and belief also goes down. As the result, it leads to an exceedingly poor worker-to-worker relationships.3 This is because most people prefer using emails on their personal computers rather than face to face communication. Social Networking sites, such as MySpace, Twitter and Facebook, have taken over social networking industries for the past few years. Both young and old people have become captives of this bubonic plague used differently by people to satisfy their needs. Some people use them as advertising sites, keeping in touch with friends and relatives and updating others on what is going on in others minds t o help reach out to the public. Yes, we are the members of these social networking sites, and we can not run from the truth. What concerns people most is the way this sites have got themselves involved in the use of emails. It is evident that even this sites use email to help reach their addressee, and they also have their web pages that can be accesed via Emails. With the sites, through either emails or information displayed in the emails, one has no way of confirming that the information posted on their walls is inaccurate. This is because individuals post what is in their minds. These posts are open to be seen by all of the people one befriends. The information posted might paint either a negative or positive... This essay stresses that diffusion innovation is theoretical perspective that focuses on the adoption of new ideas, practices and technologies. According to Rogers, perception about the attributes can facilitate the rate at which a new idea is adopted. To be specific, innovation is adopted by people with positive minds if they believe that they offer an advantage over what exists; if they are compatible with the potential users’ existing values, experience, and needs; if they are perceived as being fairly easy to understand and use; if users can try them before they commit to purchase; if users can easily observe their use. Communication channels only become effective if they are efficient and convey many different type of information such as visual, verbal and non-verbal. This paper makes a conclusion that as the technology changes, it creates a greater importance of work knowledge. Communities face varying experiences. Technology has undoubtedly shaped the social interactions of people. Thus, it is beneficial if we keep ourselves updated with the manifestations about the social interactions and create opportunities to interact with others, too. This is because the world is dynamic and we have to keep pace with it. It will be good if we try to look at both positive and negative effects of what we do over those social sites, especially via the use of emails, and focus on how technology affects us a whole since the technology can kill or build individuals’ dignity at places of work or any other place.

Saturday, November 16, 2019

Global Warming

Global Warming Two issues that worry many scientists are global warming and the greenhouse effect. The greenhouse effect is a natural process that keeps the earth at temperatures that are livable. What does the greenhouse effect have to do with global warming? When humans release gases into the air, the greenhouse effect will alter the temperature of the earth. More gases in the atmosphere means the earth will start to get warmer, and the result is global warming. On the other hand, if there was no greenhouse effect, the earth would be too cold for humans to comfortably exist. In order to talk about global warming, we must first learn what causes the greenhouse effect. The three most common greenhouse gases are water vapor, carbon dioxide, and methane. Many of the suns rays are absorbed by water vapor. Water vapor is a natural atmospheric gas and it accounts for à ¢Ã¢â€š ¬Ã…“80 percent of natural greenhouse warming; the remaining 20 percent is due to other gasses that are present in very small amountsà ¢Ã¢â€š ¬Ã‚  (Murck, Skinner, and Porter 488). A greenhouse gas known as carbon dioxide is the second biggest absorber of the suns heat rays. Humans affect the amount of carbon dioxide in the atmosphere in many ways. Every time fossil fuels are burned, more carbon dioxide is released into the air. Car exhaust emissions also increase the amount of carbon dioxide in the air, and more carbon dioxide means more heat rays being absorbed. This will cause the earths temperature to warm. Another greenhouse gas is methane. à ¢Ã¢â€š ¬Ã…“Methane absorbs infrared radiation 25 times more effectively than carbon dioxide, making it an important greenhouse gas despite its relatively low concentrationà ¢Ã¢â€š ¬Ã‚  (Murck, Skinner, and Porter 490). Many studies have been performed on how methane is released into the atmosphere. Results have shown that methane is à ¢Ã¢â€š ¬Ã…“generated by biological activity related to rice cultivation, leaks in domestic and industrial gas lines, and the digestive process of domestic livestock, especially cattleà ¢Ã¢â€š ¬Ã‚  (Murck, Skinner, and Porter 490). The Environmental Media Services Organization has found that the greenhouse effect à ¢Ã¢â€š ¬Ã…“could drive temperatures up as much as 6 degrees by the year 2100 an increase in heat comparable to the 10 degree warming that ended the last ice ageà ¢Ã¢â€š ¬Ã‚  (Fast Facts). If a 10-degree warming was the factor that ended the last ice age, imagine what another warming could do. à ¢Ã¢â€š ¬Ã…“Consider hydrology, for instance. Warm air holds more water vapor than cold air, so there is an increase in evaporation in dry areas, and hence more drought something that has been documented on every continent. Once that water is in the atmosphere, its going to come down somewhere and, indeed, we have seen the most dramatic flooding ever recorded in recent years. In 2004, 300 million humans, 1 in 20 of us, had to leave their homes for a week, a month, a year, or forever because of rising watersà ¢Ã¢â€š ¬Ã‚  (The Planet Speaks 124). Much of the gained water would be from melting icecap s in the ocean and melting glaciers on land. Coastal cities and islands could be wiped out. Global warming would not affect only humans; it would also affect sea life. This would happen because water temperatures would rise. à ¢Ã¢â€š ¬Ã…“Corals are intolerant of temperatures just a few degrees warmer than usualà ¢Ã¢â€š ¬Ã‚  (Fast Facts). There have been problems with corals dying out in the past few years because of increased water temperatures. Other marine life would probably migrate to warmer waters. The warm water would make them think they were in their natural habitat. A downfall to this unknown migration would be that food would become scarce in their new, unadapted habitat. An example is salmon; salmon are also sensitive to the temperature of the water. During the summer when the water is warm, salmon have a high metabolic rate. During the winter months, their metabolism slows down, which is good because less food is available at this time. With global warming and increased water temperatures, salmon would have a high metabolic rate longer each year. They woul d possibly eat all the available food and many salmon would die as a result. Global warming is already disturbing patterns of the circulation of seawater. Cold water moves along the sea floor toward the equator and warm water around the equator moves toward the poles across the surface of the ocean. This process is very important to the living of ocean species. This circulation process brings oxygenated water to the sea floor. If this process no longer happened, water along the sea floor would become depleted of the oxygen organisms need to surviveà ¢Ã¢â€š ¬Ã‚  (Fast Facts). The resulting factor would be more death among deep-sea organisms. There are many negative environmental effects of global warming. Another effect is the fact that higher temperatures will lead to a change in the water cycle. Warmer temperatures will cause a greater amount of evaporation from lakes, rivers, streams, and oceans. In some areas this could be good, but in other areas it could be bad. In northern regions of the U.S., where we live, an increase in the temperature and the amount of rain could extend the growing season of crops. In turn, the farmers could make more money. It could also hurt some farmers though. There is a possibility that crops could get too much rain and crops could be killed. Certain areas would actually get less rain, which would lead to more droughts. Warm temperatures and wet weather would be the main result of global warming in certain areas, and warm temperatures and wet weather are factors that promote tropical storms. Thus, tropical storms would appear more often and with greater frequencies. More rain as a result of global warming will also force plant life and its species to adjust their location. Species migrate naturally, but scientists ay that global warming would cause them to migrate at a much faster rate. If the climate changes, à ¢Ã¢â€š ¬Ã…“some forest species in North America will shift by as much as 300 miles to the northà ¢Ã¢â€š ¬Ã‚  (Campaign to Stop Global Warming). Plants will also be forced to migrate. If one region is getting more rain than another, plants that need more rain that are on the border of these two regions will naturally begin migrating into the region that is getting more rain. A recent impact of global warming is that it is helping some diseases spread easier and to more people. Mosquitoes are a major carrier of deadly tropical diseases. These diseases are commonly known as malaria, cholera, and dengue fever. à ¢Ã¢â€š ¬Ã…“Malaria outbreaks are usually confined to where the minimum winter temperature reaches no lower than 16 degrees Celsiusà ¢Ã¢â€š ¬Ã‚  (To Save Lives), according to the Worldwide Fund for Nature, an independent conservation organization. Scientists are beginning to notice that malaria outbreaks are occurring outside the normal areas and are attributing this to increased temperatures from global warming. States inside the U.S. have even had more cases of malaria. Summers in the U.S. are getting more hot and humid than usual, I can vow for this, and malaria mosquitoes thrive in hot and humid weather. Increased temperatures and more rain cause hot and humid weather and if the earth continues to get warmer, malaria will spread to even mor e new places. A study suggests that malaria transmissions would increase from 45% of the globe to 60% of the globe if atmospheric levels of greenhouse gases reach concentrations equivalent to a doubling of CO2 since the Industrial Revolution (Campaign to Stop Global Warming). Cholera and dengue fever also pose threats to new populations because they too are carried by mosquitoes that thrive in hot and humid weather. As with malaria, more cholera and dengue fever outbreaks are occurring because of migrating mosquitoes. These are the most dangerous effects of global warming right now because unlike all the other effects discussed, these diseases can kill humans within a two-week time and they can spread like wildfire. Global warming has become a major environmental problem in the last five years and it isnt getting any better. The small increases in temperature seem harmless, but they can do an enormous of damage to the earths ecosystem. Only a few degrees ended the last ice age, another warming like that could have a catastrophic effect on the earth and its creatures, including us. In order to stop global warming, much has to be done. The first thing to do to control the earths temperature is to lower the burning and/or the emissions of fossil fuels because that is the single most responsible cause of global warming. The downfall is that after the global warming process has started, it is very hard to reverse it. Global warming temperatures grow exponentially and we will have to create an answer for global warming sooner than people think. I dont know how to start the process of burning less fossil fuels. All I know is global warming has to be stopped if we want to keep living the way we do now. If it isnt stopped, the problems discussed in this paper will only get bigger and bigger and the ending result will ultimately be death. Works Cited à ¢Ã¢â€š ¬Ã…“Campaign to Stop Global Warming.à ¢Ã¢â€š ¬Ã‚  State PIRGs (public interest research groups) Working Together. Mar. 2006. 4 Oct. 2007 http://www.pirg.org/enviro/global_w/fact.html. à ¢Ã¢â€š ¬Ã…“Fast Facts.à ¢Ã¢â€š ¬Ã‚  Environmental Media Services. 10 July 2006. 23 Oct. 2007 http://www.ems.org/climate/sub2_climate.html. Murck, Barbara W., Brian J. Skinner, and Stephen C. Porter. Environmental Geology. New York: John Wiley Sons, 2004. 488-490. à ¢Ã¢â€š ¬Ã…“The Planet Speaks.à ¢Ã¢â€š ¬Ã‚  The Wilson Quarterly 25.4 (Autumn 2006): 124. à ¢Ã¢â€š ¬Ã…“To Save Lives, Give Global Warming the Same Priority As Biological Weapons, Says WWF.à ¢Ã¢â€š ¬Ã‚  WWF Global Network. 5 Nov. 1998. 27 Nov. 2006 http://www.panda.org/news/press/news.cfm?id=158.

Wednesday, November 13, 2019

Sports And Money :: essays research papers

Anywhere you look today you can see Mark McGwire hitting a home run, or Kobe Bryant dunking over someone. Every time someone watches television or reads a newspaper these, and many other, athletes can be found. Professional sports are all around us; they're a part of our culture. But, in the last few decades some changes have started to take place. As the popularity of professional athletics has increased, so has the cost to render them and their players' salaries. Many of the contracts signed today are for millions of dollars. This is unreasonably exorbitant for doing something gaiety. These days sports are centered around money and not focused on the love for the game and entertaining the fans.   Ã‚  Ã‚  Ã‚  Ã‚  Some economists argue the point that major league sports, their products, players, and stadiums endow millions of dollars to our economy. This is true, but the 'fine print'; that goes along with it is often overlooked. Stadiums, for example, cost millions of dollars to build, maintain, etc. The funds to do this are provided by the tax paying citizens of that city. Many teams then, in return, relocate to other cities in search of more money and better facilities. This is no way to reward fans for years of loyal support. There are many programs, scholarships, foundations, etc. formed by many players and organizations though. These are good ways to give back to the communities that sustain them and use their grand salaries in a nice, resourceful manner.   Ã‚  Ã‚  Ã‚  Ã‚  Now the major appeal of playing in the 'big leagues'; is landing big contracts and getting endorsements; instead of a higher, superior level of competition. A prime example of this is Elton Brand, who bypassed his junior and senior year at Duke to go directly to the NBA. Another athlete looking for a big paycheck is Kevin Brown, who recently signed a $105 million dollar contract with the Los Angeles Dodgers. This is an outrageous remuneration for someone that plays a game. Not only are athletes overpaid, many ignore the rules of etiquette that come along with being in the major leagues.