How to Melt Aluminum Cans at Home

How to Melt Aluminum Cans at Home Aluminum is a common and useful metal, known for its corrosion resistance, malleability, and for being lightweight. Its safe enough to be used around food and in contact with skin. Its much easier to recycle this metal than it is to purify it from ores. You can melt old aluminum cans to get molten aluminum. Pour the metal into a suitable mold to make jewelry, cookware, ornaments, sculptures, or for another metalworking project. Its a great introduction to home recycling. Key Takeaways: Melt Aluminum Cans Aluminum is an abundant and versatile metal that is easily recycled.The melting point of aluminum is low enough that it can be melted with a hand-held torch. However, the project goes more quickly using a furnace or kiln.Recycled aluminum can be used to make sculptures, containers, and jewelry. Materials for Melting Aluminum Cans Melting cans is not complicated, but its an adult-only project because high temperatures are involved. Youll want to work in a clean, well-ventilated area. Its not necessary to clean the cans before melting them since organic matter (plastic coating, leftover soda, etc.) will burn off during the process. Aluminum cansSmall furnace of the electric kiln (or another heat source that reaches the appropriate temperature, such as a propane torch)Steel crucible (or other metal with a melting point much higher than aluminum, yet lower than your furnace- could be a sturdy stainless steel bowl or a cast iron skillet)Heat-resistant glovesMetal tongsMolds into which youll pour the aluminum (steel, iron, etc.- be creative) Melting the Aluminum The first step youll want to take is to crush the cans so that you can load as many as possible into the crucible. Youll get about 1 pound of aluminum for every 40 cans. Load your cans into the container youre using as a crucible and place the crucible inside the kiln. Close the lid.Fire up the kiln or furnace to 1220 °F. This is the melting point of aluminum (660.32  °C, 1220.58  °F), but below the melting point of steel. The aluminum will melt almost immediately once it reaches this temperature. Allow half a minute or so at this temperature to assure the aluminum is molten.Put on safety glasses and heat-resistant gloves. You should be wearing a long-sleeve shirt, long pants, and covered toe shoes when working with extremely hot (or cold) materials.Open the kiln. Use tongs to slowly and carefully remove the crucible. Do not place your hand inside the kiln! Its a good idea to line the path from the kiln to the mold with a metal pan or foil, to aid in clean-up of spills.Pour the liquid aluminum into the mold. It will take about 15 minutes for the aluminum to solidify on its own. If desired, you can place the mold in a bucket of cold water after a few minutes. If you do this, use caution, since steam will be produced. There may be some leftover material in your crucible. You can knock the dregs out of the crucible by slapping it upside down onto a hard surface, such as concrete. You can use the same process to knock the aluminum out of the molds. If you have trouble, change the temperature of the mold. The aluminum and mold (which is a different meta) will have a different coefficient of expansion, which you can use to your advantage when freeing one metal from another.Remember to turn off your kiln or furnace when youre done. Recycling doesnt make much sense if youre wasting energy, right? Did You Know? Re-melting aluminum to recycle it is far less expensive and uses less energy than producing new aluminum from the electrolysis of aluminum oxide (Al2O3). Recycling uses about 5% of the energy needed to make the metal from its raw ore. About 36% of aluminum in the United States comes from recycled metal. Brazil leads the world in aluminum recycling. The country recycles 98.2% of its aluminum cans. Sources Morris, J. (2005). Comparative LCAs for curbside recycling versus either landfilling or incineration with energy recovery.  The International Journal of Life Cycle Assessment, 10(4), 273–284.Oskamp, S. (1995). Resource conservation and recycling: Behavior and policy. Journal of Social Issues. 51 (4): 157–177. doi:10.1111/j.1540-4560.1995.tb01353.xSchlesinger, Mark (2006). Aluminum Recycling. CRC Press. p. 248. ISBN 978-0-8493-9662-5.

Case study analysis Essay Example | Topics and Well Written Essays - 750 words - 2

Case study analysis - Essay Example Jessica, in her description, stated the behavioural problems John underwent. According to her recount of events, John was not talking as early as the age of two. John is obsessed with his train toys and spends most of the time playing with them. Every time his mother changes his routine, he became completely agitated. He would even get displeased when interrupted to go to bed. John’s behaviour in school also worried her mother. He would invade other childrens playing spaces while at school, where he would scratch or bite them when frustrated. He also often licked playground equipment and doorknobs. John would exhibit varied reactions to signal what he wants. For instance, he once threw a temper tantrum in frustration that he would not have what he wants. Jessica was so worried about the inability of his son to express himself. Thus, she decided to contact our social working centre, whereby I was assigned to work on the case. Jessica reported that John lags behind his age mates in self-help skills. Recently, however, Jessica observed that John was succeeding in toilet training. He has been staying dry more often and would ask when he wants to visit the bathroom. Nonetheless, John still experienced accidents during the nights. His attempts to learn how to dress had been futile as he still put on clothes inside out. John, on a positive note, followed instructions, especially when told to stay indoors. Jessica discovered that John’s condition would trigger taunts and provocations from truants in the neighbourhood. One of the boys in the neighbourhood had been purportedly doing drugs. Jessica, therefore, felt that he would be a bad influence to his estranged son. Jessica mother firmly believed that John’s was a consequence of poor parenting. Her neglect of John and the physical abuses of his ex-husband may have contributed to John’s condition. As a solution, she believed that

OSHA Term Paper Example | Topics and Well Written Essays - 1000 words

OSHA - Term Paper Example This memorandum contains information regarding the effective ways of handling this problem and outlines the most appropriate strategy to be used. The most effective course of action recommended is the execution of laws regarding chemical exposure in the workplace and activation of occupational health and safety programs in different companies. Background Hazards in the workplace have through time affected workers in different industries. These hazards could either be chemical, physical, biological or psychological. For example in the construction industry, statistics show that the rate of fatalities among the construction workers in three times that of all other workers in the US. Construction workers are mainly affected by physical accidents such as falls and inadequacy of proper safety equipment (Occupational Safety and Health Standards for the Construction Industry 18). Even in the availability of safety equipment, the collapse of building due to lack of proper inspection or the f oundations also increases fatalities. Workers in the agricultural sector are commonly affected by biological and chemical hazards. This takes place during the application of pesticides on the plants, due to noise and exposure to the sun excessively. They are also susceptible to physical hazards caused by machinery used in the farm. In America, fatal agricultural injuries are mainly caused by the rolling over of tractors. The rate of accidents in the workplace has increased over the years mainly due to the current use of machinery which easily injures workers. Key Issues to be Addressed One of the major issues to be addressed by the Occupational Safety and Health Administration is the absence of laws and regulations that ensure thorough inspection of the workplace in order to ensure that they are secure for individuals to work in. For example in the mining industry, inspections done on the land being mined are not enough to ensure that the mining field is not susceptible to fires cau sed by methane production (Mendeloff 58). The lands could also collapse in case of an earthquake and as such many fatalities are caused by such accidents. Equipment in different industries are inspect from time to time. However, the frequency of inspection should be increased to avoid losing more lives and more human capital to accidents in the work place. Another major issue to be addressed is the absence of occupation health and safety programs in different companies. This program is effective in training individuals on how to care for their safety and to avoid accidents in the workplace. Many companies avoid having this program as it involves the hiring of new employees thus increasing the cost of production. In the absence of the program, employees are not made aware of their employment rights and further than that they are not aware of how to act in case of accidents in the workplace. Employees further are not aware of what is expected of them in the work environment in relatio n to their safety and the general safety of the company. Solutions to these Issues A solution to the absence of laws and regulations is to design and enforce policies that address various problems faced by workers in different fields. For example, laws should be passed to ensure that frequent inspections are carried out in different industries depending on the frequency of accidents to take place in the particular area. Inspections

Borrowings in English Essay Example for Free

Borrowings in English Essay The main period for the introduction of French words into English was after the Norman Conquest of 1066. For the next 300 or so years, the language of the royal court, and therefore of authority, was Norman, a variety of French. The ruling classes spoke what came to be known as Anglo-Norman, while the rest of the population the peasantry carried on speaking English. French quickly became the language of law and government. This carried on until about the end of the 14th century when English reasserted itself as the language of authority. But French had made its mark on English and many of its words remain in use in English today. †¢With the Normans in a position of power for so long in the British Isles it is no surprise that many English words relating to government, law, money, and warfare come from French. Latin loans are classified into the subgroups. †¢Early Latin loans. Those are the words which came into English language through the languages of the Anglo-Saxon tribes. The tribes had been in contact with Roman civilization and had adopted many Latin words denoting objects belonging to that civilization long before the invasion of the Angles, Saxons and Judes into Britain (e.g., cup, kitchen, mill, wine, port). †¢Later Latin borrowings. To this group belong the words which penetrated into English language in the sixth and seventh centuries, when the English people were converted to Christianity (e.g., priest, bishop, nun, and candle). †¢The third period of the Latin borrowings includes words which came into English due to two historical events: the Norman Conquest and the Renaissance. Some came to English language through French but some were borrowed directly from Latin (e.g., major, minor, intelligent, permanent). †¢The latest layer of Latin words. The words of this period are mainly abstract and scientific words (e.g., nylon, molecular, vaccine, phenomenon, and vacuum).

Symbolism in Macbeth :: William Shakespeare

In William Shakespeare’s Macbeth, symbolism is abundantly used in exemplifying the overall theme of murder. There are several prominent forms of this throughout the play. The contrast of light and dark representing good and evil plays a major role in the advancement of events in the lay. Blood symbolizes murder and guilt. The archetypal pattern of purification by water is used several times in the play, particularly in the murder scenes. Symbolism is widely displayed in order to enhance the awk of evil. Light and dark represent good and evil in the play. During the time in which Macbeth was written, the king was associated with the sun. The sunset symbolized his death or overthrow. The quotes "When shall we three meet again. . . " and "That will be ere the set of sun." (342) foreshadow the king's death. The imagery of light and dark continues throughout the play. "Stars, hide your fires, Let not light see my black and deep desires." (352) demonstrates Macbeth's step toward evil. Most of the corrupt or unusual events in Macbeth occur under a cloak of darkness. The murders, Lady Macbeth's sleepwalking, and the appearance of the witches all take place at night. Lady Macbeth's sleepwalking scene is the epitome of the light/darkness symbol. She once craved the darkness but now carries a candle to dispel it. The line, "She has light by her continually, 'tis her command." (410), symbolizes Lady Macbeth's fear of darkness or evil. The image of blood plays an important role in the event of Duncan's murder. It represents Macbeth's guilt and shame about the horrific crime. After killing the king, Macbeth comments on his blood stained hands by saying, "As they had seen me with these hangman's hands." (364) Macbeth refuses to return to the crime scene to smear blood on the guards, fearing the blood will somehow implicate him further. Macbeth feels uncomfortable with blood on his hands. He immediately tries to remove it after killing the guards. The archetypal pattern of purification by water is prominent in the play. It symbolizes the removal of guilt. Following the murder of Duncan, Lady Macbeth reassures her husband by telling him, "A little water clears us of the deed", (365) Later in the play, Lady Macbeth repeatedly rubs her hands together, representing washing her hands.

American war for independence II

The American war for Independence was a new revolution that was relevant for various political and social reasons. Due to the changes caused by such revolution, the changes that happened during this event greatly changed the course of American History. In order to fully understand the radical nature of the American Revolution, it is first important to briefly discuss the events during this period. Occurring in the latter half of the 18th century, the American Revolution was the event that allowed the Thirteen (13) Colonies to become the United States of America.This was also the event that finally granted these colonies the independence that they desired from the British Empire. The American War of Independence or Revolutionary War that ensued from 1775 to 1783 was largely radical in nature because of the fact that it was the first instance that a colony had tried and succeeded to gain independence from the British Empire. One of the key developments resulted from this revolution was the birth and growth of enlightenment philosophy in America.The influence of this wave of thinking created a certain sect that was opposed to an absolute monarchy, such as that of the British Empire, and instead embraced a new form of government that was revolutionary for its time. The broad intellectual and social paradigm shifts within the colonies introduced new ideas with regard to republican ideals that began to take hold among the members of the colonies. Democracy soon began to play a larger role in the determination of the new government that was going to replace the absolute monarchy.The steadily expanding role of democracy in government caused the deterioration of traditional social hierarchies that existed. Instead a new ethic was created within the core of American Political values. While the United States was arguably not the first democracy to ever exist, the neo-classical model that arose during this time was largely unheard of in other parts of the world, particular ly from a British Colony.These social and political changes greatly impacted the way that the world saw the Americas from that point on. As the birthplace of modern democracy as the world now recognizes it, the United States of America soon became the symbol of world democracy. The birth of new ideas with regard to government, representation and social class were all altered by this event. It was so influential that it became the foundation of the American Constitution and the reason why the United States will always be known as the land of the free.

Should DNA Be Tested In Rape Cases Law Essay - Free Essay Example

Sample details Pages: 7 Words: 2243 Downloads: 3 Date added: 2017/06/26 Category Law Essay Type Argumentative essay Did you like this example? My research project will examine if DNA should be tested in earlier rape cases. Before the mid 1990s DNA was not tested a much as it is today in rape cases. Because of the lack of testing, it is possible that many innocent individuals are serving time for a crime they did not commit. This is the reason I feel this project is important to research. No innocent person should have to serve a sentence for a crime. Literature Review Rape is one of the most heinous crimes that can be committed. The word rape can have several different definitions. The one definition that is used by all states is if a man forcibly subjects a woman to sexual intercourse without her consent he has committed rape (uslegal.com, 2008). However, many people are falsely convicted of rape. By using DNA the falsely accused can regain their freedom. Despite the availability of DNA testing there are still people serving a sentence for a rape they did not commit. Bruce Grosss article False Rape Allegations (2008) states that There is no way of knowing the number of defendants who have been convicted of rape on the basis of false allegation. One study found 28 cases in which the defendant had been convicted and served an average of 7 years in prison before being exonerated by DNA evidence. According to Alex Trensniowski s article, Ronald Cotton was wrongly sentenced to two life terms for rape, he was exonerated by DNA evidence in 1995 (2009). James McKinleys article tells of a Houston man that served five years in prison before released after DNA proved he did not sexually assault an 8 year old boy in 2002. Kara Goekes articles states that Ronald Taylor served a 13 of 60 year sentence for rape before DNA SHOULD DNA BE TESTED IN EARLIER RAPE CASES? proved him innocent (2008). Kevin Johnson describes in Cleared by DNA test, but still struggling to be free (2009), that not even DNA washes away the lasting stigma that shadows once-convicted sex offenders who are c leared by genetic testing. From reading these articles I found that there is a desperate need for DNA testing of past rape cases. It is hard to imagine being accused and convicted of a crime you did not commit. That is why I feel DNA needs to be tested in all past rape cases. Discussion Rape is the most serious form of sexual assault in the United States. In all states if a man forcibly subjects a woman to sexual intercourse without her consent he has committed the crime of rape (uslegal.com, 2008). With todays technology DNA can help identify the rapist in a crime. However, Before DNA technology was widely available, individuals were found guilty of rape without proper evidence to convict them. DNA should be tested in earlier rape cases, because many innocent people have spent the majority of their life in prison for a rape that they did not commit. The victim can make a false identification during a line up or the victim could be making false rape allega tions. Mitochondrial DNA can also be used in rape cases. Scientists are able to find victims hypotype, and detect the suspects haplotype (Didier, 2007). One study shows 28 cases in which the defendant had been convicted and served an average of seven years in prison before being exonerated by DNA evidence (Gross, 2009). SHOULD DNA BE TESTED IN EARLIER RAPE CASES? Another study shows nearly 90 percent of the 227 people cleared by DNA evidence since 1989 were convicted of some of the most heinous sex crimes. Not even DNA washes away the lasting stigma that shadows once convicted sex offenders who are cleared by genetic testing and the criminal justice system that wrongly jailed them offer little help, (Johnson, 2008). Sir Matthew Hale stated that rape is an accusation easily to be made and hard to be proved, and harder to be defended by the party accused, tho never so innocent, (Rumney, 2006). The following are cases that prove that DNA can prove innocence in r ape cases. Sexual Assault Cases Jennifer Thompson picked Ronald Cotton as her rapist from a police line up. While in prison Cotton found another inmate bragging that he had raped Jennifer Thompson. Cotton contacted his lawyer to have a DNA test. Cotton was not a match. However the other inmate that was bragging about the rape, his DNA did match. Cotton was released in 1995 and received $105,000 from the state for his suffering (Tresniowski, 2009). Ronald Gene Taylor was tried for a rape and found guilty. He served twelve of the sixty year sentence before being found not guilty. Taylor was a suspect because he lived less than a mile from the crime scene and was brought to participate in a line up. The victim choose Taylor as her rapist, however she also stated that she was unable to see her attacker because it was dark. The Innocence Project began investigating the case in 1998. In 2006 DNA testing was ordered in the case. The new tests found biological material to sample an d proved Taylors innocence, the evidence pointed to another man that would never be tried. Taylor may be able to collect up to $600,000 if SHOULD DNA BE TESTED IN EARLIER RAPE CASES? he sues the police department where the line up took place (Goeke, 2008). Ricardo Rachel! was arrested in 2002 for the assault on a 8 year old boy. The child and another child witness stated that Rachel! lured the boy to an abandoned house by offering money to him for cleaning up trash. The boy was then raped at the abandoned house. DNA evidence was available at the time of the arrest, however it was never processed to be use in the trial. Rachel! was found guilty and served five years in prison, before being released. The original DNA was court ordered to be tested and the test proved Rachel! was not the criminal. Rachel! is entitled to $300,000 in state repartitions (McKinley Jr., 2008). In 1987 a women in an apartment complex reported that she had been raped. She i dentified Marcus Lyon as the rapist. Lyons served three years for the crime. In 2007, Lyons was given his innocence after DNA evidence was tested. Lyons is entitled to $85,0000 for his time served as an innocent man (Smith, 2008). Willie Williams was found guilty in the 1985 rape of a Fulton county, Georgia woman. Williams was convicted on the victims eye witness statement. The DNA and rape kit were not tested before the trial. It was not tested until 2007, twenty-two years after Williams was arrested. The tests showed Williams was not the attacker. The DNA actual!y matched Kenneth Wicker a serial rapist. However, the woman that was attacked refused to testify again, because she stated it would be too hard on her to live through a trial again. Because of this Kenneth Wicker was never tried and walked as a free man (Torpy, 2009). Jerry Miller was convicted ofrape in 1981 and spent 24 years in prison. He finished his sentence before being found inno cent. A year after his parole he was SHOULD DNA BE TESTED IN EARLIER RAPE CASES? proven innocent from DNA testing of the victims clothes against his. Johnny Briscoe was convicted of rape in 1982. Briscoe served 23 years in a Missouri prison. DNA was lifted from a cigarette butt showed it was not Briscoe who committed the crime (Johnson, 2009). Marlon Pendleton spent more than 12 years in prison for a sexual assault that had taken place in 1992. He was set free in 2006 (Mills, 2008). Sadly some people are not proven innocent until after their death. Tim Cole spent thirteen years in prison before suffering a major asthma attack that killed him in 1999. In 2008, DNA testing showed another man by the name Jerry Johnson was guilty of the crime instead of Cole. Johnson even admitted to the crime in writing four years before Coles death. In the letter Johnson stated that he had raped Michele Mallin in 1985 on the Texas Tech campus. At the time the letter was mailed to a police department Cole was already serving a sentence for the crime. The letter was ignored, so Johnson mailed another letter to Coles family, but by this time Cole was already dead (Johnson, 2009). Innocence Projects Luckily there are groups of people who are trying to help the innocent who are wrongfully convicted. One of these groups are titled, The Innocence Project. The Innocence Project is a non-profit legal clinic affiliated with the Benjamin N. Cardozo School of Law at Yeshiva University and created by Barry C. Scheck and Peter J. Neufeld in 1992. The project is dedicated to exonerating wrongfully convicted people through DNA testing. As a clinic, law students handle case work while supervised by a team of attorneys and clinic staff. The Innocence project states that, DNA testing has been a major factor in SHOULD DNA BE TESTED IN EARLIER RAPE CASES? changing the criminal justice system. It has provided scientific pro of that the system convicts and sentences innocent people and that wrongful convictions are not rare events. Most importantly, DNA testing has opened a window into wrongful convictions so that we may study the causes and propose remedies that may minimize the chances that more innocent people are convicted (The Innocence Project, 2009). The first Innocence Project was Centurion Ministries it was founded in 1983 by a minister James McCloskey, a former executive who traded in his corporate career for a Masters of Divinity degree from Princeton University. Centurion Ministries is a nonÃÆ'ƒÂ ¯Ãƒâ€šÃ‚ ¿Ãƒâ€šÃ‚ ½ profit organization whose mission is to free from prison and clear the names of individuals who are completely innocent of crimes for which they have been convicted and imprisoned. Centurion Ministries usually takes on cases of inmates who have been sentenced to life terms or were designated for execution (Innocence Projects in the US, 2009). North Carolina became the first state to create an innocence commission, giving inmates who claim they were wrongly convicted a chance for freedom after their court appeals have failed. The panel has eight members who are empowered to subpoena records and witnesses and can consider new evidence not presented in court. Iffive of the commission members find that a claim of innocence deserves review, the case will be sent to a panel of three state Superior Court judges. Those jurists then would have to decide unanimously that an inmate was actually innocent in order for the conviction to be overturned (Weinstein, 2006). Some may oppose the testing of DNA in older rape cases. One reason could be SHOULD DNA BE TESTED IN EARLIER RAPE CASES? that they believe the testing would question the victims complaint between supporting victims and protecting the rights of the accused. Other may think that testing DNA in older rape cases would cost to much money. However, would it be better for the state to have to pay millions in fees to the defendant that was found not guilty after serving time in prison? Should money really come before a persons life? Some may think the testing will take too much time that could be spent on other current crimes. To solve this problem people need to be hired to work the older cases to insure they were properly processed. The time spent testing DNA does not compare to the time the innocent spent behind bars. A few authors and officials have suggested ways to deter people from falsely accusing rape. One way would be to charge the person who files a false rape allegation with filing a false report to the police. Another way would be to place the false allegation on their permanent record (Raphael,2008). However these steps could also cause real rape victims to be afraid to report the crime, in fear of being falsely charged themselves. Conclusion Ther e is an outstanding amount of evidence that proves DNA should be tested in earlier rape cases. If there is any reason for doubt the evidence should be tested or retested. It is hard to imagine how many innocent people have died in jail as an innocent person. We want a justice system we can trust, not one that the innocent has to fear. SHOULD DNA BE TESTED IN EARLIER RAPE CASES? References Goeke, K (2008). Falsely Accused: The case of Ronald Gene. Forensic Examiner. 17,86. Gross, B (2009). False rape allegations: An assault on justice. Forensic Examiner. 18,66-70. Hatsch, D (2007). A rape case solved by mitochondrial DNA mixture analysis. Journal ofForensic Science. 52, 891-894. Johnson, K (2009, January 28). Cleared by DNA tests, but still struggling to be free. USA Today, p. AI. Johnson, K (2009, February 4). Texas family fights to clear name: Wrongfully convicted man died in prison. USA Today, p. A 3. Mckinley Jr., J. C. (2008, December 13). Man, imprisoned 5 yea rs, is cleared of sexual assault. New York Times, p. A 14. Mills, S (2008, November). The heroes of the wrongfully convicted. Chicago Tribune, p. 2.4. Raphael, J (2008, March) The Duke lacrosse case. Violence Against Women, Vol. 14, Iss.3; p. 370. Retrieved March 02, 2010, from Innocence Projects in the US Web site: https://truthinjustice.orglips.htm. Retrieved March 02, 2010, from https://www.uslegal.coml. Rumney, P(2006,March). False allegations ofrape. Cambridge Law Journal, p.128ÃÆ'ƒÂ ¯Ãƒâ€šÃ‚ ¿Ãƒâ€šÃ‚ ½ 158. Smith, G (2008, December 20). Gov. Rod Blagojevich pardons 22 people. SHOULD DNA BE TESTED IN EARLIER RAPE CASES? McClatchy-Tribune News. The Innocence Project, The Innocence Project. Retrieved March 01, 2010, Web site: https://www.innocenceproject.org Torpy, B (2009, February 1). Final grim twist in 85 rape case. Atlanta Journal, p. AI. Tresniowski, A (2009, March 16). She sent the wrong man to prison. People, 7I(10), 101. Weinst ein, H (2006). North Carolina to weigh claims of innocence. Retrieved March 01,2010, from Truth In Justice Web site: https://truthinjustice.orgINCÃÆ'ƒÂ ¯Ãƒâ€šÃ‚ ¿Ãƒâ€šÃ‚ ½commission.htm. Don’t waste time! Our writers will create an original "Should DNA Be Tested In Rape Cases Law Essay" essay for you Create order