Water and Quality Contamination Essay Example for Free

Water and Quality Contamination Essay Introduction. Background: According to the Millennium Development Goals Report 2012, 783 million people, or 11 per cent of the global population, remain without access to an improved source of drinking water. Also the United Nations has long been addressing the global crisis caused by insufficient water supply to satisfy basic human needs and growing demands on the world’s water resources to meet human, commercial and agricultural needs (un.org). In this experiment water quality and contamination of groundwater was investigated. First, I observed the effects that many pollutants have on groundwater. I predict that in this experiment the oil and vinegar will create the large amount of contamination in the water, while the laundry detergent will just create an aroma smell to it. Considering the smells and color to these ingredients I think that it will cause the water quality to have a bad smell and cause the water to be very cloudy. Once filtering the contaminated water, the water will be clear and purified. Second, I will experiment water treatment and filtering. I predict that once the contaminated water is treated and filtered that it will leave me with less contamination or none at all. Then for the last experiment, I will determine the difference between bottled water and tap water to discover any contamination. I predict that the tap water will be the most contaminated and with the most chemicals in it, while the bottled waters; Dasani and Fiji will be completely filtered and free of any chemicals. Objective: The objective of groundwater sampling is to determine whether or  not the quality of the water is poor or valuable enough to drink, and then it leads to decontamination and filtering. Contaminants can move from food, soil, air and water. It is important to note that groundwater and surface water may act both as pathways. Evaluation of surface and ground waters as part of contaminated site investigation studies is, therefore, a major concern. Hypothesis: There were three different steps to this investigation to determine the final hypothesis. The first experiment was the effects of groundwater contamination, second was water treatment and third was drinking water quality. There are a variety of portable sampling devices available for the collection of groundwater, however, each application has different standards and is dependent on the contaminants. A number of different sampling devices and their being able to be used are used to determine the contamination. Techniques for the preservation and analysis of samples and quality assurance and quality control are also presented. Materials and Methods: Experiment #1: In order to determine my final hypothesis I had to experiment many different methods. The first method was to experiment the effects of groundwater contamination. My first step to this method was to gather all the proper materials, which included water, vegetable oil, vinegar, laundry detergent, and 240 mL of soil, cheesecloth and beakers. I started by labeling all the beakers 1-8, so that I can do comparisons and so forth. Then, I carried on to filling the beakers with water. Once adding water I then put oil, vinegar and laundry detergent into three different beakers, then mixed them and recorded my observations. After this objective was complete I drained the contaminated water into cheesecloth and recorded my observations from that as well. Experiment #2: In the second experiment, I filtered the water as to how water is properly filtered in order to purify it to drink it. The materials used in this experiment were 100 mL potting soil, beakers, 40 mL sand, 20 mL acti vated charcoal, 60 mL Gravel, alum, bleach, cheesecloth, funnel and graduated cylinder. The first step I took was adding 100 mL of soil to a beaker and adding 200 mL of water to it. Then, with two beakers I went back and forth between the two with the soil  and the sand. Once the solution was created I placed the newly contaminated water into another beaker. Once I completed that I added 10 grams of alum to the contaminated water, stirred it slowly for 2 minutes and waited 15 minutes for results, then recorded them. Meanwhile, I continued to experiment by putting a piece of cheesecloth into a funnel and the funnel into a beaker. On top of the cheesecloth 20 mL of sand, then 20 mL of activated charcoal, then 40 mL of gravel was added. Tap water was then ran through the mixture and waited five minutes to filter and see results. A few drops of bleach were then added to the water to create the filtered water. Then the two results were compared. Experiment #3: In the third experiment, tap water and bottled water were tested and compared to determine if there are health benefits in drinking bottled water. The materials used for this experiment were Dasani and Fiji bottled water, ammonia test strips, chloride test strips, 4-in-1 test strips, phosphate test strips, iron test strips, beakers, Para film, pipettes, and foil packets of reducing powder. First, all three types of water were placed into three separate beakers for further testing. The first test ammonia test strips were used, and then I recorded my results, this process continued with all the other testing strips for my final hypothesis. Hypothesis: My hypothesis was confirmed. At first I did not get much of a good response from the treatment because it was still filled with dirt. The tap water had higher levels of everything during the experiment while the treated water had none. The smell of tap was the smell of city public water while the treated water smelt like bleach. It is better the go through the filtration process. What are the steps to this process are as filtration and disinfection. In this lab I used all these steps to perform water treatment. After this experiment my hypothesis was denied. I thought that the tap water would be the only contaminated water when it was just the most contaminated while the bottled water was indeed clear and filtered, but it was not 100% clear of all contaminants. The major differences are that tap water definitely with holds much more contaminants than bottled or filtered water. My tap water seems as if it isn’t to badly contaminated and is drinkable. I definitely believe that bottled water is a better drinking water and you cant be to safe to consume tap water. Context: Bottled water can come from wells, springs, artesian wells, or the municipal water supply. The U.S. Food and Drug Administration (FDA) regulate it as a food product. It is important to note that the FDAs standards are essentially the same as those set by the U.S. Environmental Protection Agency (EPA), which regulates public water supplies. In some states, however, bottled water requirements are stricter than those for tap water are (people.chem.duke). Overall, the experiments went really well and it was good to learn about the water that we intake. Discovering the effects of groundwater contamination and the quality of water was a huge success. In these processes I discovered the importance to having filtrated water. The  process in this involves many different steps, but after taking all the required steps it leads to have clean and purified water, which is benefits society health. Variables and Futures Experiments: The point of experiment one is for us to get an understanding of the difference substances that are affected on ground water. Conclusions The threat of harmful contaminants in drinking water can no longer be reasonably ignored. The correlation between contaminated drinking water and many significant diseases and health problems is far too strong to discount ( historyofwaterfilters). At the end of the day we as people need water to survive. Millions of Americans receive high quality drinking water every day from their public water systems, (which may be publicly or privately owned). Nonetheless, drinking water safety cannot be taken for granted. SDWA applies to every public water system in the United States. There are currently more than 160,000 public water systems providing water to almost all Americans at some time in their lives(water.epa.gov). It is important to know that the water you are drinking in safe and it is healthy it doesn’t matter if the water is from the bottle or the tap. References http://www.historyofwaterfilters.com/conclusion.html http://people.chem.duke.edu/~jds/cruise_chem/water/wattap.html http://www.un.org/en/globalissues/water/ http://water.epa.gov/lawsregs/rulesregs/sdwa/index.cfm

Asynchronous Transfer Mode Net :: essays research papers

Asynchronous Transfer Mode (ATM) Networking Asynchronous Transfer Mode (ATM) is, and will be for many years to come, the top of the line in networking technology. Since the creation of the Network (the ARPAnet (Advanced Research Project Agency Network)) scientists and engineers have strived to achieve the fastest information exchange speeds combined with the most cost-efficient hardware and software. Their products and ideas have always been based on packet technology and turn-based transfers; however, in the 1980s an experimental system called ATM challenged these axioms. The ATM consisted of a new topology - Asynchronism. ATM is one of many networking types, such as Ethernet and Token Ring, which differs from all networking types in its fundamental methods. Where all other networks use consistent timing to organize the information exchange (this is called Synchronism,) ATMs use start and stop bits to allow information to send itself when needed (Asynchronism.) When the information is allowed to be shipped, it has always been sent in groups of various sizes called packets. In ATM the information is sent in a standardized size, these uniform groups are called cells. New networking technology is accepted reluctantly, for choosing to buy yourself or your company a technology that does not become widely accepted means the waste of money, time, and energy. Due to this the users of ATM have been select until very recently. The major users of ATM are universities and research centers – both of who were given government â€Å"seed money† for the purpose. The users of ATM are growing very quickly and diversely as the fear of newness rubs off and envy grows toward the original users. Though the network was the primary application focus when Asynchronism was discovered, ATM networks are not the sole application of Asynchronism. Asynchronism was successfully tested in, and now used in dial-up modems, public Unix-based terminals and the like. This simpler uses of Asynchronism serves not only to advance the performance of their respective technology but also to further the general approval of ATM’s technique. Asynchronism provides a vast array of advantages over its predecessors. Behind the popularity of ATM, the evolution of networks, and the very existence of computers lies Asynchronism’s primary advance – speed. ATM transfers data from 155,52 Mbps (approximately the same speed as a Fast-Ethernet) up to 2.4888 Gbps (a speed which has never been achieved otherwise.) The average ATM network runs as three-times the speed of the Fast-Ethernet and approximately twenty-five-times that of a basic (switched) Token Ring. Asynchronous Transfer Mode Net :: essays research papers Asynchronous Transfer Mode (ATM) Networking Asynchronous Transfer Mode (ATM) is, and will be for many years to come, the top of the line in networking technology. Since the creation of the Network (the ARPAnet (Advanced Research Project Agency Network)) scientists and engineers have strived to achieve the fastest information exchange speeds combined with the most cost-efficient hardware and software. Their products and ideas have always been based on packet technology and turn-based transfers; however, in the 1980s an experimental system called ATM challenged these axioms. The ATM consisted of a new topology - Asynchronism. ATM is one of many networking types, such as Ethernet and Token Ring, which differs from all networking types in its fundamental methods. Where all other networks use consistent timing to organize the information exchange (this is called Synchronism,) ATMs use start and stop bits to allow information to send itself when needed (Asynchronism.) When the information is allowed to be shipped, it has always been sent in groups of various sizes called packets. In ATM the information is sent in a standardized size, these uniform groups are called cells. New networking technology is accepted reluctantly, for choosing to buy yourself or your company a technology that does not become widely accepted means the waste of money, time, and energy. Due to this the users of ATM have been select until very recently. The major users of ATM are universities and research centers – both of who were given government â€Å"seed money† for the purpose. The users of ATM are growing very quickly and diversely as the fear of newness rubs off and envy grows toward the original users. Though the network was the primary application focus when Asynchronism was discovered, ATM networks are not the sole application of Asynchronism. Asynchronism was successfully tested in, and now used in dial-up modems, public Unix-based terminals and the like. This simpler uses of Asynchronism serves not only to advance the performance of their respective technology but also to further the general approval of ATM’s technique. Asynchronism provides a vast array of advantages over its predecessors. Behind the popularity of ATM, the evolution of networks, and the very existence of computers lies Asynchronism’s primary advance – speed. ATM transfers data from 155,52 Mbps (approximately the same speed as a Fast-Ethernet) up to 2.4888 Gbps (a speed which has never been achieved otherwise.) The average ATM network runs as three-times the speed of the Fast-Ethernet and approximately twenty-five-times that of a basic (switched) Token Ring.

Muscle Disease

Amanda Fallon Professor Jed Wolfson Anatomy and Physiology 1 October 27, 2011 Rhabdomyolysis: Disease of Muscular Breakdown Rhabdomyolysis is the breakdown of damaged muscle tissues resulting in the release of muscle fiber contents into the bloodstream (Patel M. D. ). This disease occurs when there is damage to the skeletal muscle. The breakdown products of damaged muscle cells, such as myoglobin, are harmful to the kidneys and frequently result in kidney damage or even kidney failure. The severity of the symptoms depends on the degree of muscle damage and the degree of the kidney damage, if any. The primary muscle damage can be caused by physical damage, medications, drug abuse and some infections. Some patients may have a higher risk of rhabdomyolsis because of a hereditary muscle condition that is already present. There are many causes of rhabdomyolysis. One of the most common causes of this disease is a crush accident, such as an auto accident. Long lasting muscle compression is also another cause of rhabdomyolysis. Long lasting muscle compression derives from â€Å"lying unconscious on a hard surface during an illness or while under the influence of drugs or alcohol â€Å"(Chang M. D. ). An untrained athlete can also get this disease from severe muscle strain where the muscle becomes damaged. Significant muscle injury can cause fluid and electrolyte shifts from the bloodstream into the damaged muscle cells, and in the opposite direction (eMedicineHealth). Other causes of rhabdomyolysis are electrical shock, very high body temperature (hyperthermia) or heat stroke, diseases of the muscular system such as â€Å"congenital muscle enzyme deficiency or Duchenne's muscular dystrophy† (Chang M. D. ). Signs and symptoms of this disease may be hard to pinpoint because the course of the disease varies depending on the cause and each patient may experience different symptoms. Complications of this disease may also be present in the early stages as well as in the later stages. The symptoms of rhabdomyolysis come from the medical history of the patient. The patient may experience painful swollen bruised or tender areas of the body. Muscle weakness may also be experienced by the patient, such as difficulty moving the arms or the legs. Nausea, vomiting and a general sense of illness can be experienced by the patient. The rise in body temperature (hyperthermia) may cause confusion, dehydration, and even a lack of consciousness if not treated. The signs of rhabdomyolysis come from the physical findings of an examination done by a doctor or a healthcare provider. Less severe forms of rhabdomyolysis may not cause any symptoms or signs, and the diagnosis can only be found in abnormal blood tests. The urine, as seen in the photo to the right, may be dark, often described as â€Å"tea-colored†, due to the presence of myoglobin in the urine. Damage to the kidneys can occur due to decreased or absent urine production, usually 12 to 24 hours after the initial muscle damage (Patel M. D. ). A second recognized complication is disseminated intravascular coagulation (DIC), a severe disruption in blood clotting that may lead to uncontrollable bleeding (Warren M. D. ). Muscle biopsies can be useful if an episode of rhabdomyolysis is thought to be the result of an underlying muscle disorder. A biopsy sample taken during an episode is often uninformative, as it will show only evidence of cell death or may appear normal (eMedicineHealth). Taking the sample can be delayed for several weeks or even months. The histopathological appearance on the biopsy indicates the nature of the underlying disorder (eMedicineHealth). Biopsy sites may be identified by medical imaging, such as using magnetic resonance imaging (MRI), as the muscles may not be equally affected by this disease. Early laboratory findings include increased levels of myoglobin, potassium, urea, and phosphorus found in blood levels. An â€Å"anion gap metabolic acidosis† could progress because of release of acids from damaged muscle tissue (Patel M. D. ). Myoglobin testing would be the best indication and the diagnostic basis because an increase of myoglobin usually will not occur in the absence of rhabdomyolysis. Diagnostic tests for urine myoglobin are often not easily available, and it may take more than 24 hours for the physician to get the results of the test. However, a typical urine screening for rhabdomyolysis may be performed as long as the urine sediment is examined as well. Complications of rhabdomyolysis also include disseminated intravascular coagulation, a condition that occurs when small blood clots begin forming in the body's blood vessels (eMedicineHealth). These clots ingest all the clotting factors and platelets in the body, and bleeding begins suddenly. When muscles are damaged swelling within the muscle can occur, causing what is called compartment syndrome. If this occurs in an area where the muscle is bound by fascia, a tough fibrous tissue, the pressure inside the muscle compartment can increase to the point at which blood supply to the muscle is compromised and muscle cells begin to die. Rhabdomyolysis is treatable and patients may recover quickly if the disease is caught in the early stages. The main goal of treatment is to prevent kidney damage or to prevent any further kidney damage. However, if left untreated, acute kidney failure develops in 30-40% of patients (Ritz). Early and aggressive hydration may prevent difficulties from this disease by rapidly removing the myoglobin from the kidneys. Hydration of the body may include using several liters of intravenous fluids until the condition is stabilized. Diuretics can also help with removing the iron-containing pigment out of the kidneys. If the patient produces an acceptable amount of urine a doctor may administer bicarbonate, which can prevent the myoglobin from breaking down into toxic compounds within the kidney (Warren M. D. ). Kidney failure occurs when the kidneys are not able to filter and process waste from the body. If the disease progresses enough and kidney failure occurs then the patient may have to undergo dialysis. Dialysis is a procedure that takes the blood out of the body and sends it into a machine, as seen in the picture to the left. The machine filters the waste products from the blood. In severe cases of kidney or renal failure a kidney transplant may be required. If the case of rhabdomyolysis is mild it can be treated at home. The home treatment would include lots of rest and sufficient hydration by drinking plenty of fluids. The overall prognosis of rhabdomyolysis is pretty good as long as it is diagnosed and treated promptly. If the instance of this disease is not severe then the patient may only have to be in the hospital for a short time period for rehydration with IV fluids and lots of rest so the muscles can recover. Acute kidney failure occurs in many of the patients. Rhabdomyolysis is the cause for as many as 15% of patients with kidney failure (eMedicineHealth). While the mortality rate for this disease is approximately 5% (eMedicineHealth). The risk of death caused by this disease depends mainly on the primary health of the patient, the amount of muscle damage that has been caused and any other associated injuries. If kidney failure occurs, the mortality rate can increase to 20% (eMedicineHealth). Rhabdomyolysis can be prevented in almost all cases. Exercise programs and routines need to be thoughtfully planned to prevent any kind of injury and to lower the risk of getting rhabdomyolysis. This includes avoiding exercising in extreme heat conditions and drinking a sufficient amount of fluids. Both these situations can lead to dehydration, which increases the risk of muscle damage. Also, the risk of rhabdomyolysis exists highly for patients taking statin and fibrate medications for high cholesterol control. Information is often provided to these patients to be aware of the symptoms of this disease and the information should be read carefully and thoroughly. In conclusion, this is a disease of the muscular system that could affect anyone in their lifetime. This disease is more common than what I had originally thought. Although it is easily treatable, it can be a very dangerous and painful disease. I am glad that I researched rhabdomyolysis because I have learned what can happen and what to do if I ever experience any of the symptoms. I have also learned the consequences of not training properly for exercise. In doing this research paper I have learned about a disease that I may see affect people in my career as a physical therapist. Bibliography Chang M. D. , Louise. WebMD. 13 September 2010. 22 October 2011 . eMedicineHealth. Rhabdomyolysis (Cont. ). 2011. 30 October 2011 . Patel M. D. , Parul. U. S. National Library of Medicine. 13 August 2009. 21 October 2011 . Ritz, Eberhard. â€Å"Disease of the Month: Rhabdmyolysis. † Journal of the American Society of Nephrology (2000): 1553-1561. Warren M. D. , JD. â€Å"Rhabdomyolysis: a review. † Muscle and Nerve (2002): 32-47.

Essay on Comparison of the American and French Revolutions

Comparison of the American and French Revolutions The American and French revolutions both compare and contrast in their origins and outcomes; both revolutions began due to the common peoples need to obtain independence and liberty from an oppressive government. The American Revolution was triggered by the American colonists need for financial independence from the overpowering nation of Great Britain, while the French revolution was a struggle to gain social equality among the masses. Although the American and French Revolutions were fought over the same ideas, the American Revolution is considered more â€Å"conservative† than the French. The intent of the American revolutionaries was not to initiate a revolution, but rather to gain their†¦show more content†¦The British found that they could no longer afford to keep fighting to remain control of the American colonies; the British surrendered in Yorktown, Virginia, in 1781. American independency was finally recognized in 1783, when the Treaty of Paris was drawn up as a result of two years of negotiations. The American colonies had been so deprived of their natural rights from the British government that the only viable solution was to have a revolution. However, the American revolutionaries were able to maintain a conservative approach to the revolution due to non-violent tactics used by the American colonists. In 1787, a few years after the British recognized American independency, the Revolution in France was beginning to unravel. France was desperately in need of financial assistance; it lacked a National Bank and National Treasury system. France had supported the American colonists in the American Revolution, and also gave financial support in the War of Austrian Succession, and the Seven Years War. A combination of the financial support given in these wars, maintaining their military, and the fact that France spent more then it collected in taxes each year, resulted in a substantial debt crisis for France. The French Revolution was also a result of the discontentment of the social structure in France. King Louis and his wife, Marie Antoinette, were very unpopular among the French because they did not care about their subjects.Show MoreRelatedComparison Of The French And American Revolution838 Words   |  4 Pagesabout the people. The people of France and America have declared their independence with their own letter to the king, The Declaration of Independence and The Declaration of the Rights of Man. These two documents of freedom will start the French and American Revolution, which leads to these to countries being independent and free from the king. The Declaration of Independence in fact is still used today. 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The American Revolution focused on achieving independence from Britain, as Britain abused th eir power by unfairly taxing colonists. The Mexican Revolution concentrated on eliminating dictatorshipRead MoreThe American And French Revolutions1517 Words   |  7 PagesThe American French Revolutions The American Revolution and French Revolution were unique in world history because they used the ideas of freedom and equality from the Enlightenment, but understood them differently at the same time. Both revolutions occurred around the same time- the 18th Century, the American Revolution began on the 4th of July when Thomas Jefferson wrote the Declaration of Independence (Dr. Taylor). The French Revolution then follows in 1789, provoked by â€Å"...a greater demand