Free Essays - Im the King of the Castle :: Kafka Castle Essays

I'm the King of the Castle While reading I'm the King of the Castle, I noticed that Susan Hill used many different techniques to put a point across, the most important being her use of imagery. However her writing also has many other qualities such as good structure and her ability to think like her characters. In addition she manages to build up tension and uses different ways of emphasising words or phrases. All of these factors contribute to her unique evocative style and add to her reputation of being a very talented writer. In chapter Eleven, paragraph thirty-eight, she describes vividly how Kingshaw feels sick with fright when Hooper locks him in the shed. "He retched, and then began to vomit, all over the sacks, the sick coming down his nose and choking him. It tasted bitter. He bent forwards, holding his stomach. When it finished he wiped his mouth on the sleeve of his shirt. He was shivering again." This passage is an example of her excellent use of imagery. She conjures up a picture of the scene as well as expressing Kingshaw's fears and senses in an evocative style by using a scene that we can all relate to and understand. An example of Susan Hill's good structure is at the very beginning of the novel, when Hooper and Kingshaw first meet, Hooper sends Kingshaw a note saying 'I didn't want you to come here'. This sets up the story line from the beginning, leading us to expect events to come. Then at the very end of the novel before Kingshaw commits suicide, Hopper sends him a final note saying ' Something will happen to you Kingshaw'. She shows the ability to be able to think like a child, which adds to the overall affect of the book because the main character is Kingshaw who is a child. This process of her thoughts gives us a wider understanding of Kingshaw's character and his thoughts. Examples of her thinking like a child appear in many forms in the novel. One of them is her use of childish language and grammar. "Now, he thought, I know what Hooper is really like. He's a baby.

Plato Contrasted with Confucius Essay -- Compare Contrast Plato Confuc

Plato Contrasted with Confucius Since the early beginnings of society, in which people began living in gathered communities, there can be seen a constant progression, upon a steady time line, of the increased order of the organization of society. However, this is not the kind of progress that was sought by two widely known philosophers and teachers, Plato and Confucius. The kind of social reform and alteration displayed in the teachings and writings of both of these men, examine a movement from societies viewed as chaotic and barbaric toward societies consisting of gentleman, practicing prescribed values, morals, and actions. Confucius and Plato both emphasized a moral conduct that went above and beyond the socially accepted norms of their times. Despite the concentration on these factors in Chinese and Grecian cultures, the progress attempted by both of these philosophers was not achieved by their own standards within their own societies.   Ã‚  Ã‚  Ã‚  Ã‚  There are several common themes running through the primary work of compiled sayings attributed to Confucius: emphasis on gentlemanly conduct, pursuit of humbleness among fellow man, and a search for a proper ruler who is in accordance with â€Å"the Way.† Running throughout the entire book of â€Å"The Analects†, Confucius makes reference to many characteristics that a gentleman should possess. Even beginning in the first chapter of Book One, Confucius is attributed with saying, â€Å"Is it not gentlemanly not to take offence when others fail to appreciate your abilities?† Other characteristics Confucius attributed to gentlemanly conduct include studying the rites and â€Å"The Odes†, humbleness, lack of desire for places of position, unbending in moral conduct, and many other factors. By laying out a basis upon which a gentleman should act, Confucius establishes a standard to measure the quality of all men. Setting a standard implies that there are men above and below this set, desired point, and the word standard also indicates a measure of quantitative or qualitative value. By creating such a standard, Confucius is immediately able to begin causing social reform and progress. However, this progress, though achieved through concentration on social values, never reaches the capacity to which Confucius desires it to reach. Several sayings within The Analects indicate that Confucius is unable to see an accumulation of all desire... ...ty is tentative. It proves to reason that a society guided by high morals will have a progress. However, to assume that all corruption will be removed simply by placing leadership in office that adheres to the high standards fails to recognize the flaw in man that Plato and Confucius both obviously see: man is in need of progress towards civil order. From the beginning, man is already viewed as degraded and morally corrupt. The society will progress because progression of society has been the natural order since the beginning of civilization. It is the quality and moral standing of this progress that is in question. Using Plato’s method of progression, it can be seen that society is not progressing, but rather being led blindly down a road. Progression implies the acquisition of knowledge upon a continuous path. Keeping men under order through ignorance, and elevating those with morally upright actions only serves to further isolate and expand the gap between the men posse ssing knowledge of civil order and those merely following it out of service to a defined path. A false sense of progress is created, while the majority of society remains ignorant of why to be humane and civil.

Critical Minerals And Uses Of Precious Metals Environmental Sciences Essay

Today I will supply some background information on which metals are the most built-in to our state ; these metals are widely used in mundane life, in some manner or another, by most Americans. I will besides discourse the beginning and formation of our cherished metals, every bit good as where in the state – and the universe – they are normally found and mined. As with all natural resources, the opportunity of someday running out of these metals is non merely possible, but really likely. I plan to besides discourse solutions to this hereafter job, including the usage of both man-made and naturally-occurring replacements for each type of metal. Cherished metals are considered critical for good ground. They have a broad assortment of applications in industry, engineering, jewellery, and even medical specialty. It is agreed among mineralogists that the most critical minerals which fall under the class of cherished metals are gilded, Ag, and minerals in the Pt metals group: Pt, Pd and Ir. Although the U.S. went off the gilded criterion in 1972 thanks to President Nixon, gold is still normally used in the countries of medical specialty, jewellery, electronics, and industry. The component is lissome and ductile, so it can be transformed into assorted forms and made utile in different facets of industry ; it can even be made so thin that it is about crystalline. Silver, much like gold, besides has an array of utilizations in today ‘s universe. Besides the obvious usage in the jewellery concern, Ag is besides used in dental medicine, medical specialty, electronics – Ag even has a topographic point in the industry of c ertain types of vesture. Platinum group metals, which are known as PGMs, have a broad scope of applications. Platinum is normally used in electronics, catalytic convertors, jewellery, and dental medicine tools. Palladium, which is a comparatively rare metal, is besides used chiefly in catalytic convertors. It is besides used in jewellery, and surgical and dentistry equipment. Iridium besides has many influential applications in scientific discipline and industry ; it lends its belongingss to particle natural philosophies, acetic acid production, and the industry of engines that require corrosion opposition. Beginnings, Uses, and Supply of Gold Beginning and Beginnings of Gold In naturally-occurring sedimentations, gold ( atomic symbol Au ) is found in the signifier of single nuggets ; it is besides found as grains and flakes in certain stones, or as venas. A vena is a mass of crystallised mineral found within a stone, normally formed as a consequence of deposition from after the necessary mineral elements are carried to the topographic point via an aqueous solution and precipitated out of the solution. Alternately, gold can be found in alluvial sedimentations – by and large as nuggets – which are unconsolidated sedimentations of deposit that have been eroded or otherwise shaped by H2O outside of a marine environment. By and large the gold found in ores is really little, but in some exceeding instances, really big nuggets have been found. Gold that occurs together with either vitreous silica or sulphide minerals – such as fool's gold, besides known as â€Å" Fool ‘s Gold † – is called a load sedimentation. Because g old has such a low thaw temperature compared to other metals, it is readily carried by hydrothermal solutions as a consequence of chilling magma, and so solidifies alongside the vitreous silica. One of the best topographic points to happen gold sedimentations is near the invasion of environing stone by a cooled magma organic structure. These lode sedimentations normally form inside clefts ( known as crevices ) within a slab of stone. Gold can besides be recycled from scrap stuff, and 190 dozenss of gold were recovered this manner in 2009 in the U.S. The most common geographic locations for gold excavation worldwide are southeasterly Australia, East Asia, parts of South America and Africa, and parts of the United States. Gold militias are highest in South Africa ( 6,000 dozenss ) , Australia ( 5,800 dozenss ) , and Russia ( 6,000 dozenss ) . Militias are different from mined measures because the gold in militias is held by a cardinal bank of a peculiar state, and used purely for payment to other states or organisations. The U.S. shops about 3,000 dozenss of gold in its pecuniary militias. Along with the Treasury ‘s Stockpile, the Department of Defense runs a Cherished Metallic elements Recovery Program ( PMRP ) , which works to achieve cherished metals for economic intents. Specifically, the DOD recovers cherished metals from metal bearing stuffs such as photographic and X-ray stuff ( from infirmaries, printing installations, exposure labs ) ; metal dust collected from vacuity sweepers ; and scrap/waste metals from industrial workss. The PMRP focuses on the metals discussed in this testimony, every bit good as Os, Rh, and Ru. Harmonizing to the British Geological Survey, as of 2005 the top location for gold excavation was South Africa, with a sum of about 294 dozenss produced. In 2008, the gold excavation industry in South Africa produced 2260 dozenss. But even though much of the universe ‘s gold comes from South Africa and China, there is some to be found in the U.S. The most abundant beginnings of coal in the U.S. are found in mines in South Dakota and Nevada. Uses of Gold The most common usage of gold today is for the industry of jewellery. Gold is besides an ideal industrial metal due to its opposition to corrosion, every bit good as its electrical conduction for usage in machine equipment and electronics parts. Harmonizing to the U.S. Geological Survey ( USGS ) , approximately 90 % of gold brought into the market yearly ends up in manufactured merchandises, while the staying part of it goes to both private investors and pecuniary militias. In 2009, 72 % of mined gold was used for jewellery, 7 % was used for electronics, and 21 % went into dental equipment and other assorted utilizations. Domestic Supply of Gold In January of this twelvemonth, the USGS published a trade good study on gold for the old twelvemonth ( 2009 ) . Harmonizing to this study, gold was retrieved at 50 load mines, every bit good as a few placer mines, all of which are in Alaska. As a side note, the difference between the two types of mines is that a load mine occurs within solid stones ( for illustration, in a vena ) , while a topographic point mine is an alluvial sedimentation – normally of sand or crushed rock – which besides contains of import minerals and metals such as gold. Smaller placer mines in Alaska and a few of the western United States besides yielded gold. A smaller sum of the 2009 gold supply besides came as by-products from Cu excavation operations. In the last few old ages, the purchase of gilded jewellery has decreased well, doing monetary values to increase. Last twelvemonth, gold mines in Nevada showed significant lessening in production, while a mine in Montana and another in Nevada closed, to farther cut down production. In 2009, the mean monetary value of gilded jewellery rose over 20 % higher than the mean monetary value in 2008. Due to recent labour jobs in gilded mines of South Africa, the rubric of top gold manufacturer shifted to China, with Australia and the U.S. following near behind. Although comparatively important sums of gold are mined here in the U.S. , a good part of it comes from these international beginnings. Last twelvemonth, 210 dozenss of gold were mined in the U.S. , and gold militias in the U.S. totaled 3,000 dozenss. Import Beginnings of Gold Although China is presently the universe ‘s top manufacturer of gold, none of our imported gold comes from at that place. Alternatively, the gold import statistics are broken down as follows ( for the old ages 2005-2008, the most recent records from the USGS ) : Canada – 30 % Peru – 29 % Mexico – 16 % Chile – 9 % Other – 16 % Beginnings, Uses, and Supply of Silver Beginning and Beginnings of Silver Silver ( atomic symbol Ag ) , a soft passage metal, of course occurs as an metal with gold ; it is besides found in its native signifier, and in ores along with S and arsenous anhydride. However, the chief beginnings of Ag are really copper, lead, and nickel ores, which are mined in parts of South America, Mexico, China, Australia, and eastern European states such as Serbia and Poland. Mines which produce the highest planetary sums of Ag are located in Mexico, Australia, Russia, Peru, and, here in the U.S. , in Alaska. Silver, like most metals, organize compounds with sulphides inside the Earth ‘s crust. Metal sulfides which have dissolved in hot, piquant H2O within the crust finally precipitate as different minerals when they come into contact with ice chest H2O or air. Silver precipitates as a mixture with these other sulphides, which is how it is finally found at or closer to the Earth ‘s surface. It is usually found as a constituent of hydrothermal venas. Silver occurs natively, and is comparatively pure in this signifier. It besides occurs as ores, such as argenite ( Ag2S ) and chlorargyrite ( AgCl ) , and is recovered as a consequence of the Cu refinement procedure. Uses of Silver Silver is largely used for the intents of jewellery, utensils, industrial equipment, coins and decorations, and picture taking. The USGS notes that Ag has the highest thermal and electric conduction of all the metals. Pure Ag besides exhibits the whitest colour of any metal, every bit good as the highest optical coefficient of reflection. Because it has such powerful optical belongingss, it is used often to do mirrors. The USGS besides notes that the most common single-end usage of Ag is picture taking ; in this country, Ag can be found on photo paper, movie, and in darkroom and exposure lab chemicals used for publishing exposure. However, the demand for Ag in picture taking has declined significantly, from 2,290 dozenss in 1999 to around 900 dozenss in 2009 ; this is likely due to the rapid passage from traditional 35mm picture taking to digital picture taking worldwide. Harmonizing to the USGS, Ag is even used in vesture to decrease olfactory property. Domestic Supply of Silver In a mineral trade good sum-up of 2009 published in January 2010, the USGS provinces that the U.S. mined about 1,230 dozenss of silver- this supply of Ag was deserving about $ 520 million. As with gold, most of the state ‘s Ag comes from Alaska, with Nevada coming in at a close second. Last twelvemonth, 1,500 dozenss of Ag were recovered through refinement, including bit metal. The USGS notes that unlike gold, there is no authorities reserve of Ag. In the 1950s when the authorities reserve of Ag was at its highest, the U.S. Treasury was in ownership of the cheapest Ag, while any silver outside the Treasury significantly rose in monetary value. Since the authorities ‘s Ag was so inexpensive, demand increased steadily until the reserve disappeared wholly. Since Ag is no longer used to do American coins, there merely is no demand for authorities reserve. Aside from the measures of Ag we mine in the U.S. , we besides to a great extent on Ag imports from other states. Import Beginnings of Silver Over half of the Ag used in our today really comes from Mexico, with important sums coming from Canada and South America every bit good. Between 2005 and 2008, the import of Ag into the U.S. can be broken down as follows: Mexico – 54 % Canada – 26 % Peru – 15 % Chile – 3 % Other – 2 % Two-thirdss of the universe ‘s Ag trade goods came from treating Cu, gold and lead-zinc ores in 2009. From 2005-2008, the U.S. exported a sum of 3,850 metric dozenss of Ag to other states. More late, in 2009, we merely exported 360 dozenss to other states. Beginnings, Uses, and Supply of Platinum Beginning and Beginnings of Platinum The three most common and of import members of the Platinum Group Metals are Pt, Pd, and Ir. Platinum ( atomic symbol Pt ) is another malleable passage metal. Platinum is an improbably rare metal, and occurs at a concentration of merely 0.005 parts per million ( ppm ) in the Earth ‘s crust. The celebrated Bushveld Complex in South Africa is the top modesty of Pt in the universe. Harmonizing to the USGS, in 2009 South Africa produced the highest sum of Pt – 80 % of the universe ‘s Pt trade good, to be exact. Russia produced the 2nd highest sum of Pt that twelvemonth, at merely 11 % . Platinum can be found natively or as an metal with Ir. An metal is a solid solution of two or metals, in which the atom of one metal occupies unfastened infinites between the atoms of the other metal. Both Pt and Ir occur in perceptibly greater copiousness at the site of big meteorite impacts. This can be explained by the fact that the Moon and other extraterrestrial organic structures – particularly meteorites – incorporate a much higher copiousness of Pt and Ir than any topographic point on this planet. On Earth, Pt combined with other PGMs are frequently found in alluvial sedimentations. Some little Pt militias located in North America include the Sudbury Basin in Ontario, Canada, and the Absaroka Mountain scope in Montana. Uses of Platinum Platinum is a various metal that is really immune to staining, doing it another metal that is ideally suited for jewellery. It besides has first-class catalytic and electrical belongingss. Platinum has many utilizations in the chemical industry as a accelerator, and is used often in the production of fertilisers and explosives. Platinum even plays a function in the crude oil industry, in the refinement of petroleum oil and the production of gasolene. Harmonizing to the USGS, since 1979, the automotive industry has been the primary user of all PGMs, particularly Pt. PGMs are used often in catalytic convertors to keep acceptable exhaust emanation criterions. Platinum is a common metal used in jewellery industry and watch-making. Domestic Supply of Platinum and Other PGMs The lone two runing PGM mines in the U.S. as of 2009 were the Stillwater and East-Boulder mines in Montana. Combined, these mines produced 3,800 dozenss of Pt, 12,500 dozenss of Pd, and 1,300 dozenss of Ir in 2009. Small sums of PGMs may frequently be recovered from Cu excavation processes ; and, as with most metals, PGMs are recovered and recycled from other bit metal. Approximately 18 dozenss of PGMs were recovered in this mode last twelvemonth. About 900,000 dozenss of PGMs are presently in militias ; this means that they could be extracted for economic intents at a clip of much greater demand. Estimates of militias merely see the stuff that can realistically be recovered. The worsening economic system over the last few old ages has caused a reduced demand in car gross revenues, which in bend has caused less of a demand in PGMs since they are widely used in autos ‘ catalytic convertors. However, as research continues for the usage of fuel cells in autos, the demand for PGMs may increase once more – Pd is an cheap option to platinum in the accelerators of such autos. Import Beginnings of Platinum and Other PGMs The USGS provides a dislocation of imported PGMs from other economically of import states: Platinum: South Africa – 27 % Germany – 17 % U.K. – 12 % Canada – 5 % Other – 39 % Palladium: Russia – 46 % South Africa – 21 % U.K. – 17 % Belgium – 4 % Other – 12 % Beginnings and Uses of Palladium Beginning and Beginnings of Palladium Palladium ( atomic symbol Pd ) is another PGM considered to be a rare component. It is pale Ag in colour, bearing a close resemblance to platinum but with a much lower denseness and runing point. In fact, out of all the PGMs, Pd exhibits both the lowest denseness and runing point. Ore sedimentations of Pd are non common, but like the Pt, Pd has been found in its highest copiousness in the Bushveld Complex of South Africa. In North America, it can be found in the Sudbury Basin in Ontario and the Stillwater Complex in Montana. These â€Å" composites † are known superimposed pyrogenic invasions ( LIIs ) or layered mafic intrustions ( LMIs ) . These abbreviations can be used interchangeably, since â€Å" mafic † is a descriptive term for an pyrogenic stone that is dark in colour and rich in Fe and Mg. LIIs are big, superimposed organic structures of pyrogenic stone found in ancient cratons. A craton is a really old, stable subdivision of the Continental crust. The formation of LMIs requires a big volume of magma over a short period of clip, happening within the Continental crust so that they finally become exposed at the surface due to eroding. Layering of these invasions occurs from alterations in mineralogy and texture. Most LMIs, including the Bushveld Complex and Sudbury Basin, are Precambrian in age. ( The Precambrian encompasses the creative activity of earth 4.6 billion old ages ago to about 542 million old ages ago. Precambrian minerals and stones are the oldest on Earth. ) Uses of Palladium Palladium ‘s chief usage today is in catalytic convertors, due to its really stable electrical belongingss and optimum catalytic belongingss. This metal is used to fabricate medical and dental medicine equipment aircraft flicker stopper, and, like Pt, jewellery and tickers. It makes a good jewellery replacement for white gold and Pt, particularly since its picket Ag colour is natural and it is reasonably hard to state the three metals apart merely by looking at them. Up until comparatively late, Pd ‘s chief usage in the jewellery trade was as an metal to assistance in doing white gold. In the electronic industry, Pd and palladium-silver metals are used to do platings in common electronics. Palladium, every bit good as the other cherished metals, is particularly of import in electronics because of how frequently computing machines are used in merely about every facet of life today – in occupations, research, schools, and places. Metallic elements with superior elect rical belongingss are used to do computing machine french friess implemented in CPUs, cell phones, and iPods, merely to call a few devices most people use day-to-day. Palladium can be one of the by-products of atomic fission, and can be recovered – though non needfully in important sums – from spent atomic fuel. Beginnings and Uses of Iridium Beginning and Beginnings of Iridium Iridium ( atomic symbol Ir ) is the 3rd most familiar and widely-used PGM. Although it is highly rare in the Earth ‘s crust, hint sums can still be found. Iridium is a well-known PGM due to its abnormally high concentration in a bed of clay at the Cretaceous-Tertiary boundary ( normally abbreviated as the K-T boundary ) . As celebrated earlier in my testimony, Ir ( along with Pt ) is found at much higher concentrations in meteorites than anyplace on Earth ; this cognition is one of the cardinal pieces of back uping grounds for a meteorite impact at the terminal of the Cretaceous Period ( about 65 million old ages ago ) , which finally would hold caused the dinosaurs to travel extinct. One of the rarest elements on Earth, Ir occurs at 0.001 ppm in the Earth ‘s crust – whereas in meteorites, the concentration is significantly greater at 0.5 ppm. As with Pt and Pd, the highest concentrations of Ir are found in the Bushveld Complex in South Africa. Very little sums of this metal are found in the U.S. and the remainder of the universe, most notably in impact crater and pyrogenic invasions. Along with its other PGM relations, Ir is often found in Cu and nickel metal. Since all three of these cherished metals portion similar physical and chemical features, it comes as no surprise that they are normally found together and portion similar utilizations in industry and fabrication patterns. Uses of Iridium Iridium is acquired through the excavation processes of Ni and Cu, and is a by-product of the two. As with Pt, Ir is really immune to corrosion and wear, so it finds many utilizations in assorted industries. Iridium by itself is used in direct-ignition engines, where its first-class catalytic belongingss come in utile and let the engines to run decently. Natural Substitutes for Cherished Metallic elements With the possibility of our cherished metals resources going depleted, we are now turning even more towards the usage of naturally-occurring replacements for these peculiar metals. Silver and PGMs make suited replacements for gold, particularly in the industry of jewellery. Harmonizing to the USGS, base metals reinforced by gold metals have excellent usage in electronics. This method is besides used in jewellery, and allows a jewelry maker to sell the merchandise as gold while utilizing less of the metal itself. Stainless steel is a common replacement for Ag. In fact, most mean kitchen utensils are no longer made of Ag ; a speedy hunt for â€Å" silverware † on any common shopping web site will demo that most kitchen utensils are made of unstained steel instead than Ag. In picture taking, many factors now contribute to the cutback of Ag usage, including movie with diminished Ag content and digital picture taking. Aluminum and Rh are normally used to replace Ag in mirrors and other brooding surfaces. Many of the common PGMs frequently substitute for each other. For illustration, some car shapers have begun utilizing Pd in topographic point of Pt – which is more expensive – in catalytic convertors. Additionally, shapers of electronic constituents are cut downing the sum of Pd used by replacing base metals or silver-palladium metals that contain somewhat less Pd. We can surely populate without jewellery, but in such a technology-dominated society, we about can non populate without electronics, particularly computing machines ; and, although it works for some people, it would be unrealistic to believe we can populate without cars. Therefore, it is particularly of import to be cognizant of the supply of, and replacements for, cherished metals, since they are used on a regular basis in these facets of life. Recommendations for Policy Related to Cherished Metallic elements An appraisal of critical minerals conducted by the National Research Council in 2008 offered basic suggestions that can be applied to cherished metals every bit good: Identify critical metals and merchandises made from them that are important to industry and engineering. Address the beginnings of cherished metals and the planetary production/use of their terminal merchandises. Address any geologic, technologic, economic or political restrictions on the handiness of cherished metals. Acknowledge the effects of any breaks in the supply of cherished metals in the economic system and work force. These recommendations serve as a foundation and a starting point for farther research on cherished metal use: how they are acquired, when and why they might run out, the effects of acquisition ( excavation ) and what the U.S. authorities can make to turn to these issues. Our state ‘s metal resources are limited and will finally run out. Unlike fresh H2O, which is easy recycled thanks to H2O renewal workss, the per centum of metals we get from recycling is smaller than the per centum we attain from excavation. Mineral formation is a slow geologic procedure, so the refilling of these resources any clip in the close hereafter is non even an thought to see. Logically, if we mine at a faster gait than that at which the minerals are of course replaced, finally these resources will be depleted. For the clip being, we are able to trust on other states to export cherished metals to the U.S. , but their resources are limited as good. We need to take action to guarantee that we preserve these resources. As I have discussed in this testimony, these cherished metals serve a broad array of intents, and it would be a shame for them to run out in our life-time, which is a possibility. We need to measure how long we have before our resources run out. Government bureaus that deal with mineral issues, such as the U.S. Geological Survey, are responsible for carry oning mineral resource appraisals and mineral-environmental appraisals. These appraisals can help the Bureau of Land Management and U.S. Forest Service to better manage land usage for excavation intents. The Mineral Resource Program ( MRP ) of the USGS is in charge of supplying information and research about the usage and supply of our minerals, including cherished metals. In 2003, the National Research Council ( NRC ) addressed four undertakings of the federal authorities in mineral scientific disciplines: Supply an indifferent beginning of information, accessible to the populace. Conduct general research on mineral resources. Support of minerals-related international activities that benefit the U.S. Advise, when necessary, on minerals use and direction. The MRP besides takes into history the sum of undiscovered metals that are likely located in an country. When an initial study was completed as portion of the MRP, the USGS admitted that it was during a clip of significant passage within the bureau ; this included decrease in staff members, important restructuring of the Geologic Division, decrease in installations, and alterations both in ends and leading – all marks that more updated appraisals of our metal resources need to take topographic point. A new MRP survey should turn to our state ‘s present and long-run metal demands. The precedence for an updated survey should be to supply scientific evidences that would let for informed decision-making as to how much of the state ‘s land should go on to be used for excavation, and how we can run into future metal demands despite low resources in the U.S. Mining minerals and metals has negative impacts on the environment. When metals are mined, important sums of toxins are released into the environment, particularly into the dirt and groundwater. Pollution of dirt and H2O is considered secondary taint, and is damaging to agriculture and works life, every bit good as our imbibing H2O supply. The processing and refinement on metal ores can besides foul the air. In recent old ages, with subjects like planetary clime alteration taking centre phase, environmental impacts of merely about anything should ever be taken into history. Consideration of environmental effects is of import in guaranting that land is non overused for mining even more than it is overused for other patterns such as agribusiness. Furthermore, it would be good to analyze how metal sedimentations behave geochemically when exposed to enduring procedures, every bit good as the environmental effects of these reactions. If this affair contributes at all to the lessening in o ur mineral supply, research on the topic may let us to forestall this lessening. A new MRP survey should sketch possible results of environmental impacts of metal excavation, which should be taken into consideration by the BLM when doing land-use determinations. Additionally, research demands to research the possibility of utilizing man-made ( semisynthetic ) substitutes for these cherished metals. When makers want to be use replacements for a certain metal, they by and large use a different naturally-occurring metal. Since we are at hazard of utilizing up our metal resources, it would be good to develop man-made versions of gold, Ag, and PGMs. These replacements should possess the same desirable qualities, including catalytic and electrical conduction. Another manner to cut back on metals usage is to recycle. Many states, including the U.S. , already used recycled stuff from bit metal, but merely little per centums of metals used today come from recycled beginnings. In 2009, 190 dozenss of gold came from recycled bit metal in the U.S. , compared to 210 dozenss mined. Merely 17,000 kgs ( merely 17 metric dozenss ) of PGMs were recovered from bit metal in the U.S. last twelvemonth, compared to 16,300 dozenss that came from mines. The exclusion is silver: in 2009, 1,500 dozenss of Ag in the U.S. came from recycled stuff, exceling the 1,230 dozenss that were mined. Even though metals are recycled, bureaus like the USGS can rede makers on new ways to retrieve even more material from bit metal. Metal processing workss should besides work to implement new ways of treating natural mined metals so that less of the metals are lost before being refined into the concluding merchandise. Not merely would that scheme be economical, but it would b e much less uneconomical excessively. Development and execution of synthetics, increased recycling, and more efficient metals treating might someday even let the U.S. to halt excavation all together, which in bend would cut down any harmful effects on the environment. The USGS, and any other federal organisations chosen to roll up and form critical minerals informations, should hold more authorization when it comes to policies affecting the recovery and usage of cherished metals. Surveies to better our usage of metals, as outlined above, should have the proper support, and multiple federal bureaus need to work together to spread out basic scientific research, and to advance the usage of new thoughts and engineering to better understand the effects, effects, and benefits of cherished metal use. Decision Cherished metals – specifically gold, Ag, and the platinum-group metals – serve many valuable intents in our economic system and our day-to-day lives. But merely as our oil resources will finally run out, so our cherished metals will someday go depleted every bit good. Until farther surveies are conducted, we will go on to be limited in our apprehension of how rapidly these cherished metal resources will run out. We must besides research any possible major environmental injury that may come from mining these metals, and what, if anything, we can make to extenuate such injury.

Effect of Temperature on Content of Vitamin C Essay

Introduction A daily intake of Vitamin C is essential for humans. Without it, the disease scurvy develops as sailors, explorers and people during the long winters in the Northern hemisphere found before the time of Captain Cook. The British Navy started giving sailors lime juice to prevent scurvy on long voyages in 1795. Vitamin C is found in high levels in foods such as oranges, limes, lemons, blackcurrants, parsley and capsicums. Vitamin C is water soluble and is therefore not stored or synthesized in the body, thus a daily supply is required. It breaks down, and is no longer effective due to factors such as extreme temperatures or storage for more than a few days. Aim To investigate the effect of temperature of juice on the content of Vitamin C. Variables Independent: Temperature of orange juice – 25 °C, 50 °C, 100 °C Dependent: Content of Vitamin C recorded by the number of Iodine drops Controlled: Amount of orange juice – 2mL measure using a 25mL pipette Controlled: Amount of starch solution – 2mL measure using a 25mL pipette Controlled: Amount of hydrochloric acid 1M – 2 drops from a dropper bottle Controlled: Amount of distilled water – 4mL measure using a 25mL pipette Controlled: Molar concentration of hydrochloric acid (HCl) – 1M controlled using the same dropper bottle of HCl each time Hypothesis As the temperature of the juice increases the content of Vitamin C will decrease. Materials: Nudie orange juice Iodine Starch solution Dropper bottle hydrochloric acid 1M Distilled water 3 conical flasks Test tube rack Bunsen burner 25mL pipette 250mL beaker Heat proof mat Safety Glasses Thermometer Gloves Safety coat Method 1. Place 10mL of Nudie orange juice in a 250mL beaker. 2. Using a Bunsen burner, heat the juice to 25 °C. 3. Measure temperature by placing a thermometer in the juice. 4. Once juice is 25 °C, using a 25mL pipette, add 2mL of the juice into a clean conical flask. 5. Using a 25mL pipette, add 4 mL of distilled water and 2mL of starch solution. 6. Add 2 drops of hydrochloric acid 1M (HCL). 7. Using a dropper bottle of iodine, add iodine drops counting the number of drops added and mixing the solution after each drop. 8. Once the solution starts to turn purple, record the number of iodine drops added for purple to appear. 9. Clean conical flasks using water. 10. Repeat steps 1-9 with 50 °C juice and 100 °C juice. Complete 3 trials for each. Risk Assessment: Risk Prevention Hydrochloric can irritate the skin if in contact Keep the lid closed when not in use. Wear gloves, a safety coat and glasses Risk of Bunsen burner burning the skin Turn the Bunsen burner off when not in use Use a heat proof mat underneath it Keep a safe distance when burning Test tubes are breakable and my cut the skin Keep test tubes in the test tube rack Handle with care Results: Effect of temperature of juice on the content of Vitamin C Temperature of orange juice Number of Iodine drops Average 25 °C 16 drops 14 drops 13 drops 14 drops 50 °C 7 drops 10 drops 8 drops 8 drops 100 °C 5 drops 3 drops 5 drops 4 drops Discussion Vitamin C also known as ascorbic acid is an essential water-soluble nutrient for humans and some animal species. Vitamin C acts as an antioxidant serving to prevent cellular damage which is the common pathway for cancer, aging, and a variety of diseases. Vitamin C is also required to make collagen, a protein that aids the healing of wounds. The body also needs vitamin C as it improves the absorption of iron and supports the immune system. Vitamin C can be found predominantly in citrus fruits and green vegetables. The Recommended Daily Intake (RDA) is 60 mg per day. Vitamin C deficiency may cause Scurvy. Taking too much vitamin C can cause diarrhea, nausea and stomach cramps. Vitamin C is the most unstable vitamin which can be easily denatured. At high temperature, in the presence of sun light and oxygen present in air, vitamin C reacts and it is oxidized. Excessive amounts of heat can destroy vitamin C completely. At 70 °C vitamin C is denatured so it should be preserved below 70 °C to avoid heat damage. (Admin, 2013) This experiment should show a result of decreased vitamin C content as the  temperature is increased. It can be seen from the results table and graph of this experiment that the lower the temperature the more vitamin C is present in the orange juice. Each trial was fairly precise and the average showed a near consistent decrease in vitamin C content as the temperature increased. The average drops at 25 °C were 14 and the average at 100 °C was 4 showing a decrease in 10 drops. The results supported the hypothesis as it was clearly seen that as the temperature of the juice increases the content of Vitamin C will decrease. The procedural method was solid and straightforward. There were, however a couple possible sources of error. Using droppers to measure the hydrochloric acid and add the iodine is not very accurate and may produce different quantities which could affect the results. This random error maybe reduced by getting a more accurate measuring device. The major problem however was the interpretation of the colour purple once adding the iodine drops. This is a random error as it affects each result differently depending on the interpretation. To reduce this error, a colour chart should be used to compare with the solution to give a more accurate result on the interpretation of purple. Oxygen and sunlight also denatures vitamin C. The longer the juice was left in the open the more oxygen and sunlight that could decrease the content of vitamin C. The me thod needs to be changed so that it states to put the lid back on the orange juice or a specific time added so each trial the juice is exposed to air for the same amount of time to get more precise results. Conclusion Vitamin C is the most unstable vitamin which can easily be denatured. The investigation was successful with some random errors however the results still supported the hypothesis. Only minor changes are necessary to the experiment but overall the results coincided with the research of the effect of temperature on vitamin C content. To keep high presence of vitamin C while cooking it is recommended that the vegetables are cooked in low heat and small amounts of water for short periods to minimize the loss of vitamin C. Bibliography Admin. (2013, February 14). At What Temperature Does Vitamin C Denature? Retrieved April 15, 2014, from Vitaminable: http://www.vitaminable.com/at-what-temperature-does-vitamin-c-denature.html Ehrlich, S. D. (2011, July 7). Vitamin C (Ascorbic acid). Retrieved April 15, 2014, from University of Maryland Medical Center: http://umm.edu/health/medical/altmed/supplement/vitamin-c-ascorbic-acid Office of Dietary Supplements. (2011, June 24). Vitamin C. Retrieved April 15, 2014, from Office of Dietary Supplements – National Institutes of Health: http://ods.od.nih.gov/factsheets/VitaminC-QuickFacts/

Methods Used to Assess Learners Writing Ability Assignment

Methods Used to Assess Learners Writing Ability - Assignment Example As a result of their proven utility, tests as well as other standardized assessments are broadly applied in educational settings. To reap the potential benefits that are associated with tests, it is critical that they are understood completely and their strengths and weaknesses evaluated (Wall & Walz, 2004). Testing is a special way of collecting information that can be employed while making decisions about a person, a program or an organization and tests consist of items that prompt responses from a person. Testing does not comprise of the simple administration of a set of questions or tasks that have to be performed as the tests need to be scored and the results used for evaluation (Wall & Walz, 2004). Essay tests are usually considered to be more valid as compared to multiple-choice questions when measuring the writing ability of students as they have the ability of sampling a broader range of composition skills. On the other hand, variance in the scores associated with essay tests can demonstrate irrelevant factors like speed and fluency under the pressure of time or penmanship (Weigle, 2002). Multiple choice testing over-predicts the performance of minority students as far as essay testing is concerned and there is no certainty as to whether these tests have fundamentally equivalent predictive validity for candidates who are not in the same academic discipline where what they are supposed to write is not the same. The best tests that assess writing ability blend both essay and multiple-choice questions but this approach may be too expensive while the alternatives that may be relatively cheaper may have a compromising effect on the quality of the assessment. Â  

Ethical Perspectives Essay Example | Topics and Well Written Essays - 500 words

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Research project (body scanning technology) Paper

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