Land Pollution and Its Effects Essay Example

Land Pollution and Its Effects Paper Land pollution Article Free pass land pollution, the deposition of solid or liquid waste materials on land or underground in a manner that can contaminate the soil and groundwater, threaten public health, and cause unsightly conditions and nuisances. Images The waste materials that cause land pollution are broadly classified as municipal solid waste (MS, also called municipal refuse), construction and demolition (CD) waste or debris, and hazardous waste. MS includes Nostradamus garbage, rubbish, and trash from homes, institutions (e. G. , schools), commercial establishments, and industrial facilities. Garbage contains moist and decomposable (biodegradable) food wastes (e. G. , meat and vegetable scraps); rubbish comprises mostly dry materials such as paper, glass, textiles, and plastic objects; and trash includes bulky waste materials and objects that are not collected routinely for disposal (e. G. , discarded mattresses, appliances, pieces of furniture). CD waste (or debris) includes wood and metal objects, wallboard, concrete rubble, asphalt, and other inert materials produced when structures are built, renovated, or demolished. Hazardous wastes include harmful and dangerous substances generated armorial as liquids but also as solids, sludge, or gases by various chemical manufacturing companies, petroleum refineries, paper mills, smelters, machine shops, dry cleaners, automobile repair shops, and many other industries or commercial facilities. We will write a custom essay sample on Land Pollution and Its Effects specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Land Pollution and Its Effects specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Land Pollution and Its Effects specifically for you FOR ONLY $16.38 $13.9/page Hire Writer In addition to improper disposal of MS, CD waste, and hazardous waste, contaminated effluent from subsurface sewage disposal (e. G. , from septic tanks) can also be a cause of land pollution. Soil consists of a mixture of unconsolidated mineral and rock fragments (gravel, sand, silt, and clay) formed from natural weathering processes. Gravel, sand, and silt are relatively coarse-grained bulky particles, while clay particles are very small and plantlike in shape and have a strong affinity for water. Gravel and sand formations are porous and permeable, allowing the free flow of water through the pores or spaces between the particles. Silt is much less permeable than sand or gravel, because of its small particle and pore sizes, while clay is virtually impermeable to the flow of water, because of its plantlike shape and molecular forces. The permeability of soil formations underlying a waste disposal site is of great importance with regard to land pollution. The greater the permeability, the greater the risks from land pollution. Until the mid-20th century, solid wastes were generally collected and placed on top of the ground in uncontrolled open dumps, which often became breeding grounds for rats, mosquitoes, flies, and other disease carriers and were sources of unpleasant odors, windblown debris, and other nuisances. Dumps can contaminate groundwater as well as pollute nearby streams and lakes. A highly contaminated liquid called leached is generated from decomposition of garbage and precipitation that infiltrates and percolates downward through the volume of waste material. When leached aches and mixes with groundwater or seeps into nearby bodies of surface water, public health and environmental quality are jeopardized. Methane, a poisonous and explosive gas that easily flows through soil, is an eventual by- product of the anaerobic (in the absence of oxygen) decomposition of putrescence solid waste material. Open dumping of solid waste is no longer allowed in many countries. Nevertheless, leached and methane from old dumps continue to cause land pollution problems in some areas. A modern technique for land disposal of solid waste involves construction and daily operation and control of so-called sanitary landfills. Sanitary landfills are not dumps; they are carefully planned and engineered facilities designed to control leached and methane and minimize the risk of land pollution from solid-waste disposal. Sanitary landfill sites are carefully selected and prepared with impermeable bottom liners to collect leached and prevent contamination of groundwater. Bottom liners typically consist of flexible plastic membranes and a layer of compacted clay. The waste material?MS and debris?is spread out, compacted with heavy machinery, and covered each day with a layer of compacted soil. Leached is collected in a outwork of perforated pipes at the bottom of the landfill and pumped to an on-site treatment plant or nearby public sewerage system. Methane is also collected in the landfill and safely vented to the atmosphere or recovered for use as a fuel. Groundwater-monitoring wells must be placed around the landfill and sampled periodically to assure proper landfill operation. Completed landfills are capped with a layer of clay or an impermeable membrane to prevent water from entering. A layer of topsoil and various forms of vegetation are placed as a final cover. Completed landfills are often used as public parks or playgrounds.

Commentary on Oscar and Lucind essays

Commentary on Oscar and Lucind essays Commentary on Oscar and Lucinda The passage from the novel, Oscar and Lucinda is a narrative, descriptive piece of writing describing in detail Oscars experience of visiting a glass factory/business. Oscar is surprised to discover beauty and wonder in the manufacturing process of glass; however this infatuation and deep admiration of glass could be a reflection of his admiration for the owner of the glass factory. The passage is written in third person, but readers engage in Oscars thoughts and feelings through the authors use of expressionism. Although Oscar and Lucinda was written in 1988, it is set in the past. This is apparent from the oxen droppings in the street as well as the fact that men are used to manufacture glass bottles and not machinery, man had made his body comply with the needs of manufacturing. The structure of the passage shows a noticeable change in imagery halfway through, from natural scenery to foul and dirty images of a factory. The passage starts with a lighthearted, humoristic tone. We are introduced to Oscar, as he is seen by other men. These men consider him to be an odd bird and they laugh at his comic figure, but not maliciously This conveys to readers, that Oscar is a likeable character with unusual ways, or just unique qualities. He is not like other men and this is accentuated even more by his movements or actions, he leaped across the puddle, waved an umbrella, jumped to avoid some oxen droppings. The image suggests, that he is a happy, lively person, however his behavior is slightly childish, and it is possible to assume that he is not very macho or manly. From line six onwards, the focus is directed on Oscar and his various feelings, the tone consequently becoming somewhat more serious. With the line Oscar felt he had opene...

The Top 5 Jobs in Every Major Industry in the West

The Top 5 Jobs in Every Major Industry in the West if you’re looking for a career change (or a change of scenery!), here are some of the fastest-growing jobs for 2016 in the far-western part of the u.s., per the u.s. bureau of labor statistics. this region includes alaska, arizona, california, hawaii, idaho, nevada, oregon, and washington. this region is unique because it includes some of the most disparate states in the union- states don’t come much different than alaska and arizona. but what they have in common is that they’re  all seeing strong growth in core industries.1. tech industry: web developerâ€Å"if you build it, they will come.† okay, so that was technically a ghost in a cornfield telling kevin costner to build a baseball field. but it’s just as relevant for the american west, where the beating heart of the tech world lives in seattle and san francisco’s silicon valley. one of the hottest positions in the pacific region, according to the robert half tech blog, web developers w ill continue to be in demand. web developers design, create, and maintain websites for companies or personal clients. in addition to designing, they also manage the day-to-day tech aspects of the site and work in different programming languages to update the sites.web developers typically have an associate’s degree or higher to start. the median salary is $63,490, and the projected growth is strong at 27%.2. service industry: meeting, convention, and event plannertourism is a key industry in the west, particularly in hubs like las vegas. meeting, convention, and event planners are responsible for organizing large-scale events like conferences and company meetings. they manage staffs and coordinate details like food and lodging, locations, and transportation. event planners typically have a bachelor’s degree, and experience in hospitality is a valuable skill to have, as well.the median salary is $46,490, and the field is expected to grow by at least 10% in the coming ye ars.3. logistics industry: emergency management specialistin a region of the country unfortunately prone to earthquakes, fires, and other natural disasters, complete emergency preparedness is essential. emergency management specialists manage logistics related to emergency planning and training teams for future events.the median salary for this position is $52,590, and california and oregon are among the highest-paying states for emergency management specialists. the field is expected to grow between 6-10%.4. healthcare industry: occupational therapistoccupational therapists are an essential part of recovery after injury, and also work with patients who have chronic illnesses or disabilities. they create treatment plans that include everyday living skills to help patients recover or develop the ability to function. the standard level of education for occupational therapists is a master’s degree, with additional certification licensing generally required by states.the median s alary is $78,810, and the field is expected to grow by 27%.5. restaurant industry: chefwe live in a foodie nation these days, and chefs and cooks are often at the front of the innovation line, with eclectic dishes inspired by local and ethnic cuisines. chefs may work in the traditional restaurant setting, but you’ll increasingly find them in other places as well: private homes, pop-up kitchens, and various hospitality venues. on-the-job training is key for chefs. no specific degree is required, but many chefs and cooks opt for formal culinary school training, and all must meet local food handling guidelines.the median salary is $41,610, and the field is expected to grow by at least 10%.no longer the wild west of old, the western region of the u.s. is a major source of innovation in all areas- and the job scene is just as fast-paced.

Causes and Effects of Climate Change Assignment Example | Topics and Well Written Essays - 750 words

Causes and Effects of Climate Change - Assignment Example According to the research findings, it can, therefore, be said that the stratosphere has been identified as an atmospheric layer which is essential for survival on Earth because it contains ozone gas (O3) which forms the ozone layer protecting the earth from ultraviolet radiations of the Sun. The depletion of this ozone layer can lead to the entry of these harmful radiations into the surface of the earth and these radiations have many harmful effects which range from DNA and RNA damage in humans to the disturbance of even the marine life. Thinning of this layer has been found to be associated with skin cancers, cataracts, and weakening of the immunity. It can damage the ecological balance because it will not only disturb marine life but there is evidence that it might even affect crops. The stratosphere is sensitive to atmospheric pollutants which include chlorofluorocarbons, chlorocarbons, and halon compounds. Because of increased environmental pollution and the emission of these ha rmful compounds into the atmosphere by the industries and other sources which include the emissions from cars, refrigerators, air conditioners and aerosols, the stratospheric ozone has been depleting gradually. The reason behind this is that these gases react with the ozone gas and initiate a cascade which destroys numerous ozone molecules. The greenhouses gases constitute less than one percent of the atmosphere. They include carbon dioxide, ozone, and water vapor. Thirty percent of the solar energy is reflected back before it even enters the last surface of the earth and a significant amount of energy that reaches the earth is also reflected back. This energy is the infrared radiation. This radiation is taken up by the greenhouse gases before it escapes the troposphere thus leading to a warming effect which is known as the greenhouse effect.

Ethics and Corporate Social Responsibility a Case Analysis of Enron Essay

Ethics and Corporate Social Responsibility a Case Analysis of Enron - Essay Example 2. An evaluation of the potential role of corporate social responsibility in saving Enron in line with the criticisms of CSR by Friedman and Barry. 3. An assessment of whether Enron should have favoured some stakeholders ahead of others or not. 4. An evaluation of whether codes of conducts and stated core values have an effect on a business or not. Question 1 The Role of the CEO in the Enron Scandal This portion of the research examines whether Enron chief, Kenneth Lay acted immorally or not. In order to examine the issue well, the paper would use a broad range of assessment of morality to identify whether actions of Lay were appropriate or not. Each of these issues would be examined critically. Dominant and Unfettered Power and Control It is apparent that Kenneth Lay had dominant and unfettered powers and control over activities of Enron. This is because he had stayed in power for a very long time and had a lot of control in decision making. Although this in itself is not immoral, i t created the impetus for a lot of immoral and amoral activities to be carried out by Lay in conjunction with his fellow managers and directors. Ideally, a business needs to have some kind of control and checks to ensure that managers do not abuse the system (Crawford, 2006 p114). This reason justifies the need for the establishment of an Independent Board of Directors and a Management team. Again, the board needs to be headed by a person who is different from the CEO in order to create an ideal situation where no one in the top hierarchy can get uncontrolled power over the activities of the company. In the case of Kenneth Lay, he was the CEO and the Chairman of the Board of Enron for 17 years and had unfettered powers which contributed to a lot of wrongs in the company. Disregard for Core Principles Kenneth Lay stated that the core principles of Enron were communication, respect, integrity, and excellence. However, there is strong evidence that he led the company to override the ve ry standards he set and the system that was meant to safeguard the implementation of those standards. George and Jones identify that overriding standards and principles means disregard of rules and regulations for reasons that are not consistent with the best interest of the business (2009). As such, there is evidence that Kenneth Lay did things that undermined the core guiding principles that he set for Enron. First of all, he claimed that communication was key. However, there were major reporting issues in Enron that led to its collapse. Secondly, he claimed that respect was a key principle. However, it is apparent that some stakeholder groups like employees were given tough treatments and their rights were blatantly disregarded. Thirdly, Enron claimed to seek integrity but in reality, they had serious issues with truthfulness and the attempt to disguise the reality in its financial situation to maintain a positive image with the public and other stakeholders. Finally, Enron state d that they sought excellence. Although they might have been a leading business at some point in their history, they used unsustainable systems and structures to attain this end. This led to major long term issues which culminated in the collapse of the company. Since Kenneth Lay had extensive powers to ensure that the core principles that he had outlined would be honoured and he failed to do so, there is a major

Secundum Atrial Septal Defect: Surgical Closure

Secundum Atrial Septal Defect: Surgical Closure Surgical closure of secundum atrial septal defect in a patient with atrial situs solitus and interrupted inferior vena cava: report of 2 cases Key Words: Interrupted inferior vena cava, Situs solitus, Atrium septal defects, limited skin incision Abstract The occurrence of an interrupted inferior vena cava (IVC) in setting of atrial situs solitus is relatively rare. Here, we reported two cases of the surgical closure of secundum atrium septal defects (ASDs) in patients with atrial situs solitus and an interrupted IVC. The first case was a 7-year-old boy with a secundum ASD without the posterior rim whose interrupted IVC and azygos continuation had been preoperatively diagnosed by the echocardiography and cardiac catheterization. The operation was safely performed using a large-sized venous drainage cannula from the superior vena cava (SVC). The second case was a 2-year-old boy with a secundum ASD without the superior rim whose interrupted IVC was not diagnosed at the preoperative examination. The operation was performed through a median partial sternotomy via a 5.0cm limited skin incision, so direct inspection of the SVC was not clearly obtained. A cardiopulmonary bypass was established using the recommended size of venous drainage ca nnulae; however, the SVC could not be removed without elevating the SVC pressure. As a result, the ASD was closed directly under sucking the venous return from the SVC without snaring it. Post-operative computed tomography detected an interrupted IVC with azygos continuation and a persistence of both supracardinal veins, known as a double IVC. Introduction Whereas an interrupted inferior vena cava (IVC) because of the absence of its hepatic segment is mainly noted in patients with heterotaxy syndrome, the occurrence of an interrupted IVC within the atrial situs solitus is reported as ranging from 0.08 to 0.1% [1,2,3]. In these patients, cardiac malformations are frequently associated, and the main types of abnormalities include atrial septal defects (ASDs, 10.5 %) and ventricular septal defects (7.5 %) [1]. Although this systemic venous anomaly provides no symptoms by itself, it seems to be relevant in cardiac surgery, especially in procedures that require approaches through the right atrium. Here, we reported two cases of the surgical closure of secundum ASD in patients with atrial situs solitus and interrupted IVC, focusing on perioperative findings and associated issues. Case Case 1 A clinically asymptomatic 7-year-old boy (body weight, 22 kg; height, 125 cm) with an ASD secundum, which was detected at the age of 10 months, was admitted for surgical closure of the lesion. Device ASD closure by catheter intervention was contraindicated because of the absence of the posterior rim. Preoperative echocardiography revealed an atrial sinus solitus with an 18 by 21-mm ASD secundum without the posterior rim and relative valvular pulmonary stenosis. Also, interrupted IVC was suspected because drainage of the IVC into the right atrium was not detected. Cardiac catheterization to assess the indication for surgical pulmonary valvotomy showed a systemic and pulmonary blood flow ratio of 3.14 and pull-buck pressure gradient of 10 mmHg from the right ventricle to the main pulmonary artery. Furthermore, no hepatic segment of the IVC was detected; thus, an interrupted IVC with azygos continuation was confirmed (Fig. 1). Through the median full sternotomy, a cardiopulmonary bypass was established using arterial cannulation through ascending aorta perfusion with a 16-Fr cannula and venous drainage from the superior vena cava (SVC) and the hepatic vein using 28 and 20 Fr cannulae, whereas recommended cannulae sizes were 20 and 24 Fr, respectively. The ASD secundum was closed directly through the right atriotomy under moderate hypothermia and cardioplegic arrest. The operation was completed without any issues. Case 2 A clinically asymptomatic 2-year-old boy (body weight, 10 kg; height, 81 cm) had recently been diagnosed with a large ASD secundum without the superior rim. Further examination revealed an atrial sinus solitus, an 18 by 18-mm ASD secundum without the superior rim, and a bicuspid aortic valve. However, an interrupted IVC was not diagnosed. Through a median partial sternotomy via a limited skin incision (50mm in length), a cardiopulmonary bypass was established using arterial cannulation through ascending aorta perfusion with a 12-Fr cannula and venous drainage from the SVC and hepatic vein, although it was thought to be an IVC at that time, using the recommended sizes of 16 and 18 Fr cannulae. During the surgery, the SVC was attempted to be snared, but it could not be because of the elevating SVC pressure. The depth of cannula and the location of snaring were repeatedly changed without resolving this issue; therefore, the SVC was left without being snared. The ASD secundum was closed directly under moderate hypothermia and cardioplegic arrest with sucking the venous return from the SVC. Weaning off from cardiopulmonary bypass was uneventful, and the operation was completed without any issues. Post-operative computed tomography showed an interrupted IVC with azygos continuation and a persistence of both supracardinal ve ins, known as double IVC (Fig. 2). On medical check-up at the outpatient clinic one year after discharge, advanced sick sinus syndrome was detected by electrocardiography. 24-Hour Holter electrocardiography monitoring showed that the total number of heartbeats was 142,036 per day, 8 beats of isolated premature atrial contractions, and had no evidence of premature ventricular contractions or more than 2.5 seconds of sinus pose. Discussion Like the first presented case, an interrupted IVC with azygos continuation can usually be diagnosed by preoperative echocardiography [1], which can be easily treated at the establishment of a cardiopulmonary bypass by selecting adequately-sized venous cannulae. If it is not preoperatively diagnosed, direct intra-operative inspection usually makes the diagnosis possible. However, the cosmetic outcome must be taken into consideration during surgical ASD repair as well as secure defect closure after the popularization of percutaneous device closure, like in the second case. Therefore, a limited skin incision with partial sternotomy was selected for this patient, which unfortunately interrupted clear observation of the SVC. Selection of large sized SVC drainage cannula should have been considered first during inadequate venous drainage, however, which was deferred because the total cardiopulmonary bypass was easily established as long as the SVC was not snared. As is our policy, the IVC is not snared during the closing of the ASD secundum in order to obtain a certain identification of the posterior rim. Therefore, the tip of the IVC drainage cannula was positioned at the IVC around the right atrial junction for sufficient drainage of both the IVC and hepatic venous blood flow. As a result, such a maneuver enabled the establishment of a total cardiopulmonary bypass with small-sized SVC drainage cannula and eventually large â€Å"hepatic vein† cannula. As shown in Case 2, an anomalous IVC is known to accompany various rhythm disorders, though only a few cases have been reported [4,5]. One of the causes of rhythm disorders is the degeneration of the atrial muscle around the sinus node, which might occur as a result of a local volume overload on the sinus node by the presence of azygos continuation. Although the total number of heart beats was well maintained and more than 2.5 seconds of a sinus pose was not observed until now, a scheduled follow-up was mandatory for early detection of further advancement of the sinus node dysfunction. In summary, two surgical experiences of secundum ASD associated with an interrupted IVC with azygos continuation were reported. Under partial sternotomy via limited skin incision, precautions should be taken to detect the presence of this venous anomaly if venous drainage from the SVC is not adequately obtained using cannula of the recommended size.

Kobe Bean Bryant Essay

Kobe Bean Bryant nicknamed the â€Å"Black Mamba† is a professional basketball play who plays in the National Basketball Association (NBA). He was born on August 23, 1978. He was drafted right out of high school to play for the Charlotte Hornets, but soon was traded to the Los Angeles Lakers, never playing in Charlotte. Bryant is a five-time champion with the Lakers and a two-time Olympic gold medalist with the USA national team. Bryant was born on August 23 in Philadelphia. Bryant was named after a Japanese steakhouse. He is son of a former NBA player Joe â€Å"Jellybean† Bryant. After the elder Bryant finished his NBA career he took his family overseas where he played in an Italian league. Growing up in Italy where soccer was the most popular sport Bryant grew up loving two sports. He would stay all day playing soccer on the pavement fields all day, then after all the kids went home he worked on perfecting his mid-range jumper. Kobe later returned to Philadelphia where he played in high school with Lower Merion High School. Eyeing the NBA he workout with the nearby NBA team the Philadelphia 76ers. Kobe decided to skip college and head straight to the NBA. He was drafted by the Charlotte Hornets and subsequently traded to the Los Angeles where his career ignited. (Biography.com/Kobe Bryant). Kobe Bryant career did not take long to start in a good manner. In his second year in the NBA as a shooting guard, at the age of 19, he was voted to play in the NBA’s all-star game, becoming the youngest player to appear in the game. Later with the help of Shaquille O’neal the Lakers won three consecutive championships in 2000, 2001, 2002. As he reached the prime of his career without Shaq he had some lackluster season as his team didn’t even nearly compete at the level Kobe was. He was outstanding on January 22, 2006 he scored 81 points and achieving the second highest scoring game in NBA history, only second to Wilt Chamberlain’s 100 point game. Although his race for a title was not yet over in 2008 he linked up with seven footer Pau  Gasol reaching to the NBA finals. They did not win that year but the following year they did in 2009. In 2010 their season was just as great reaching to the NBA finals for a third straight time as Kobe was leading the way . They met their arch rivals again in the games most important stage. They beat the Boston Celtics in a thrilling seven game series. Kobe was named Finals MVP for both of the seasons that they had won the NBA championship. He is now a five-time NBA champion and is still seeking more titles. In the 2013 season he became the youngest player to reach 30000 points at the age of 34. Kobe Bryant is one of the greatest basketball player to ever play the game and will one day be a Hall of Famer. Kobe Bryant has a foundation, â€Å"The Kobe and Vanessa Bryant Family Foundation†, that is dedicated to improving the lives of youth and families in need, both domestically and globally. By providing financial resources and developing unique programs, the foundation strives to strengthen communities through educational and cultural enrichment opportunities. Kobe Bryant is admired by the NBA fans all over the world. They love the excitement he brings to game with his incredible clutch shots and amazing plays. Kobe is also admired for the help he brings to the less fortunate. By helping the financially or educationally. Overall Kobe Bean Bryant is someone you could look up to on and off the court.