...THE MANUFACTURE OF POLYETHYLENE Three classes of polyethylene are imported into New Zealand for extruding into a wide variety of products. These are low density polyethylene (LDPE), high density polyethylene (HDPE) and linear low density polyethylene (LLDPE). Pellets of these plastics are either imported or bought from local recycling companies, and are then extruded and blown to produce film. This film is used for packaging and making plastic bags. INTRODUCTION Polyethylene is derived from either modifying natural gas (a methane, ethane, propane mix) or from the catalytic cracking of crude oil into gasoline. In a highly purified form, it is piped directly from the refinery to a separate polymerisation plant. Here, under the right conditions of temperature, pressure and catalysis, the double bond of the ethylene monomer opens up and many monomers link up to form long chains. In commercial polyethylene, the number of monomer repeat units ranges from 1000 to 10 000 (molecular weight ranges from 28 000 to 280 000). THE POLYETHYLENE MANUFACTURING PROCESS Today, polyethylene manufacturing processes are usually categorized into "high pressure" and "low pressure" operations. The former is generally recognized as producing conventional low density polyethylene (LDPE) while the latter makes high density (HDPE) and linear low density (LLDPE) polyethylenes. The difference between these polyethylene processes and types is outlined below. High pressure Polyethylene was first produced by the...
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...Robinson1 Jennifer E. Robinson 21 March 2015 English 1010 Ms. Spillers Exemplification Essay Me Being Optimistic I have been having long thoughts about the idea that life is what you make of it. In the same manner, I have acknowledge the fact that the meaning of our lives depends heavily on the unique manner by which we see reality. As a way to see reality, I have great reasons to believe that me being an optimistic person affects significantly how I lived my life and what I attempt to do with it. I am going to briefly demonstrate the three reasons to be exact to which will establish the fact I am who I am, all things considered being me, and an optimistic person. Firstly, I believe that I am an optimistic person, chiefly because I tend to look at life as a journey towards a better and brighter future. In the same manner, I also tend to believe that the future holds plenty of promises not only for me, but also for my loved ones. These life perspectives best exemplify me being who I am. I often catch myself imagining good things about my future, promising career, and a happy family of my own, amongst other thing in my life. All of the reason that I just stated give me hope to look forward to the future and help me to control distraction over my present moments. My general take of reality is anchored on a belief that good things in life whether in my past, present, or future are outnumber with the not-so- good ones that still make up who I am today. It is without...
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...teens spend on their phones. But you take away a phone from a teen and it’s the end of their life. They don’t know what to do, they feel isolated from everyone. Now imagine a person being completely disconnected from all of civilization and escaping through the wild? It’s not going to happen; life now is all about social networking. In Edward Abbey’s book, Desert Solitaire, the chapter “The Moon Eyed Horse”, is not merely about Abbey’s encounter with a horse but Abbeys desire to escape society for good. As the chapter begins Abbey is helping his friend Roy roundup cattle in the desert. When they stop to get their horses some water Abbey notices foot prints of an unshod horse, “a wild horse” (Abbey 171). Abbey comes to find out that the horse was Roy’s “Old Moon-Eye is what you might call an independent horse. He don’t belong to anybody. But he ain’t wild. He’s a gelding and he’s got Roy Scobie’s brand on his hide” (Abbey 172). The horse left the ranch ten years ago and never returned back after he received a beating from Viviano for throwing a woman off his back. They called this horse Old Moon-Eyed because of moonblindness: an inflamed condition in one of his eyes. Abbey decides that he wants this horse and questions how the horse could be alone because he is “a herd animal, like the cow, like the human. It’s not natural for a horse to live alone” (Abbey 174). Abbey goes back to find the horse a month...
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...Is the Hoax a Bunch of Jokes? Since the amazing Apollo 11 landing on the moon, no one questioned whether it might have been a hoax, until February 15th 2001 when Fox released a documentary called “Conspiracy Theory: Did We Land on the Moon?”. Here, “hoax believers” argue that NASA faked the landing to prove that U.S. technology was greater than that of the Soviets, by not only meeting the standards of the Russians in space travel, but surpassing it, marking a bit of territory on another planet. They claim that they faked all of the footage of the mission, on earth, since NASA knew that landing on the moon was simply impossible. And that’s exactly what happened. First of all, I do not believe many of the claims that the conspiracy theorists have made to be true. Like the fact that there are no stars, or that the flag was waving, there were no craters on landing or takeoff, no dust on the footpads, no exhaust or flame, unparallel shadows, same backgrounds, astronauts brightly lit while under a shadow, crossers behind objects, detailed footprints, or the harsh climate. I understand how these claims prove to be false and don’t show evidence that the imagery was faked and therefore filmed on earth. But that doesn’t mean that it had to have been filmed on the moon, or that it couldn’t be filmed on earth! It was more important to see astronauts walking on the moon than to actually have them physically do it. So lets go back to July 20th 1969 when the U.S. was...
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...13 April, 2014 The War between Communism and Democracy for Dominance of Space The Space Race was a war of firsts between the United States of America and the Union Soviet Socialist Republics. But it was also the culmination of the dreams of man for many millennia and the team who worked on the space programs was able to discover what so many of the people that came before and after them could only dream of. It was an endeavor that all of humanity was invested in at the time. It was a testament to the power of the human spirit and it showed how nothing was impossible if we persevered and strived to be better. The space race did not start as one would expect with the respective American and Soviet space agencies. But rather it began with the German V2 missile launches towards the end of World War 2. The V2 missile was designed by Wernher Von Braun a German scientist who had dreamed of traveling to the moon for many years; however this dream had to be secret as it was considered to be treasonous and not helpful to the German cause. Von Braun and many other amateur rocketeers were drafted into the German war machine in order to help build a super weapon and their base was Peenemünde. When the war was nearing its end the Third Reich unleashed its secret weapon, the V2 missile. It could hit anywhere within its target range and there would be no warning. When it hit, it caused scenes of mass destruction. The V2 missiles were to be Hitler’s ace in the hole. However by then it was...
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...from the surface of the moon 45 years ago, signaled the dawn of a new age. This month marks the 45th anniversary of the epic Apollo 11 flight that landed the first humans on the moon and safely returned them to Earth. Armstrong, Buzz Aldrin and Michael Collins launched from Florida on July 16, 1969. Armstrong and Aldrin ventured out onto the lunar surface on July 20, 1969. The two men spent 21.5 hours on the moon before taking off from the lunar surface to meet up with Collins in the command module and fly back to Earth. Main Story: The Future of Moon Exploration, Lunar Colonies and Humanity NASA astronauts returned to the surface of the moon on multiple missions, however, no human has touched down on the natural satellite's surface since 1972. Space.com's complete coverage of the 45th anniversary of the Apollo 11 moon landing appears below: Video: Exclusive: Buzz Aldrin Remembers Moon's 'Magnificent Desolation' Exclusive: Buzz Aldrin Remembers Moments Before the Moon Apollo 11 Retrospective: 'One We Intend To Win' Apollo 11 45th Anniversary - NASA Administrator Remembers Space Station Salutes Apollo 11 45th Anniversary Infographics and Multimedia: Apollo Quiz: Test Your Moon Landing Memory NASA's Historic Apollo 11 Moon Landing in Pictures How the Apollo 11 Moon Landing Worked: Infographic Buzz Aldrin, Apollo 11 Moonwalker, in Photos Story Coverage: Thursday, July 24 Apollo 11's Vintage Tech: The Most Amazing Moon Landing Innovations From...
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...Krauthammer's article completely. How can we as a society turn our back on our space program? His article shows his admiration for imagination, which came to life. Almost 40 years ago the space program was put in motion. The thought of mankind walking on the moon created a generation of scientist.Some of his points on where we place priority are evident. How can we spend time and money on a space station that we share with the Russians and not try to still excel above the rest of our counter parts? The mission remains ours to maintain our status in the science history books. We are experiencing problems at an alarming rate such as disease, unemployment, war, etc. Why not invest in the future and accept what it could bring. Imagine how it could jump start the vast number of great minds that exist in our communities here in the United States of America. So if our nation can spend billions on stimulus, why not put monies in our future space programs for our advancement? Furthermore, through the missions to the moon has created a new profound consciousness of earth’s environmental precautions. We have become a society that is deep into extra-terrestrials now more than ever before and why stop now? The moon we left behind, with possibilities to soar higher than anyone could have ever imagined. However Krauthammer thinks if the president can give out stimulus monies to bail out the banks and the auto industry. Why not put money into search to the moon. The author quotes JFK, “not because...
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...Jupiter’s Moons Lab Purpose: The purpose of this lab was to determine the period and semi-major axis for the orbit of each moon around Jupiter. We then apply Kepler’s Laws to calculate the mass of Jupiter from out observations of each moon. Procedure: Choose a moon per lab partner. Open the Moons of Jupiter program by clicking on START → Programs → Academic Department → CLEA Exercises → Jupiter Moons. The Moons of Jupiter program simulates the operation of an automatically controlled telescope with a Charge-Coupled Device (CCD) camera that provides a video image to a computer screen. It is a sophisticated computer program that allows convenient measurements to be made and the telescope's magnification to be adjusted. The computer simulation is realistic in all important ways, and using it will give you a good feel for how modern astronomers actually collect data and control their telescopes. Instead of using a telescope and actually observing the moons for many nights, the Moons of Jupiter computer simulation shows the moons to you as they would appear if you were to look through a telescope at the specified time. Click on File → Log In. A dialog box appears. Enter the names of each student working at your computer. When all the information had been entered to your satisfaction, click OK to continue. Click on File → Run. The next dialog box to appear is called Start Date & Time. Startup values are needed by the computer to establish your initial observation session...
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...Apollo 11 was the first space mission to the moon. American astronauts, Neil Armstrong and Edwin ¨Buzz¨ Aldrin, were the first people to ever walk on the moon. Going to the moon was a great accomplishment, because it had never been done before. It was a great opportunity to explore a different planetary body in our solar system. The Apollo 11 mission impacted history because it opened new science opportunities and brought a newfound confidence to scientists. Exploring the moon was applicable to history because we found out more about the moon and its materials. Apollo 11 was the eleventh of many missions using a flight hardware known as Apollo. It was launched from Cape Kennedy on July 16, 1969 and landed on July 24, 1969. The spacecraft touched down on the moon 102 hours, 45 minutes and 40 seconds after take off. The astronauts had a meal when they landed, but they postponed their sleep period. They spent 21 hours and 36 minutes on the surface of the moon, 7 hours of which were dedicated to sleeping. The astronauts jobs were to collect lunar samples, conduct several...
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...stoppeth one of three. 'By thy long grey beard and glittering eye, Now wherefore stopp'st thou me? The Bridegroom's doors are opened wide, And I am next of kin; The guests are met, the feast is set: May'st hear the merry din.' He holds him with his skinny hand, 'There was a ship,' quoth he. 'Hold off! unhand me, grey-beard loon!' Eftsoons his hand dropt he. He holds him with his glittering eye— The Wedding-Guest stood still, And listens like a three years' child: The Mariner hath his will. The Wedding-Guest sat on a stone: He cannot choose but hear; And thus spake on that ancient man, The bright-eyed Mariner. 'The ship was cheered, the harbour cleared, Merrily did we drop Below the kirk, below the hill, Below the lighthouse top. The Sun came up upon the left, Out of the sea came he! And he shone bright, and on the right Went down into the sea. Higher and higher every day, Till over the mast at noon—' The Wedding-Guest here beat his breast, For he heard the loud bassoon. The bride hath paced into the hall, Red as a rose is she; Nodding their heads before her goes The merry minstrelsy. The Wedding-Guest he beat his breast, Yet he cannot choose but hear; And thus spake on that ancient man, The bright-eyed Mariner. And now the STORM-BLAST came, and he Was tyrannous and strong: He struck with his o'ertaking wings, And chased us south along. With sloping masts and dipping prow, As who pursued with...
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... | |3 |According to Reeves (1999), “Astronomers, believe that the universe began in a big bang roughly 14 billion years ago” (para. 5). They | | |believed that a bubble exploded suddenly and the birth of the universe began. Keep in mind this bubble was only about the size of a | | |pinhead. | |4 |You are looking back in time because of the speed of light. Light moves 186,000 miles per second. An example of this would be like we see| | |the sun, eight minutes after the fact. | |5 |The Earth is the 3rd planet from the Sun. Earth is where we live, and is the only planet that contains life. Earth is the only planet | | |that is breathable. | |6 |The Proxima Centauri is the closest star to the Sun, and the Sun is around 150 million kilometers from Earth. | |7 |The Sun is about 28,000 light years from the heart of the galaxy, and is...
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...want to be educated with the basic traditions, or customs of your religion. If you are a guest, you will want to be educated just as efficiently as the bride and groom, so you will be able to appreciate the wedding. Although most of today’s society does not know or remember what the reasons behind them are or what they mean. But just looking them up and reading up on them won’t help you be prepared for that big day. Every wedding contains the same basic traditions; such as the Bride and the Groom, the wedding party, a ring bearer, flower girl, the honeymoon, reception, the rings and gifts. What is the symbolic meaning for the Wedding Party and why has it followed us through history? It seems in these days, people getting married want the ‘party’ on both sides to make sure each person who is important to the bride and groom, has a position in the ceremony. Other’s want it as a fashion statement, to show the many colors of the wedding theme. There are a select few who choose a large group for low cost weddings, when the ceremony is on a tight budget to make the ceremony look bigger than they can afford. But is there a symbolic, religious meaning to the line of men and women standing behind the couple? It is said that in history, the Groom would gather a small army of close friends. He would designate three men as his first in line, and go to capture his Bride. The men following the Groom, would fight off the family of the Bride, and kid-nap her...
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...The Moon Landing On the day of July 20, 1969 the United States of America accomplished a colossal feat that astonished the world. After years of trial and error the United States of America was able to beat all odds and all other countries in putting a man on the Earth’s moon, two men to be exact. Neil Alden Armstrong, the first man to lay his feet on the moon’s surface and Edwin Eugene “Buzz” Aldrin Jr. who shortly followed became symbols of America’s self-proclaimed superiority. The controversy of this topic lies in many questions. What events took place that led up to the moon landing? Who was involved? How and why did we put a man on the moon and be the first? History itself can give us these answers but there is also one question that seems to still have people talking to this day and that is, did it really even happen or could it possibly be the United States of America’s greatest hoax? The Cold War began approximately in 1945 at the end of World War II. The United States, Great Britain and some other allied counties decided they wanted to contain communism in the Union of Soviet Socialist Republics (U.S.S.R) and China. Although the United States of America and these communist enemies did not get in any physical battles during this war there was definitely a lot of unspoken threats and the flexing of muscles between the two super powers, the United States of America and the Soviet Union. One of the two biggest contests or “races” between the two countries began when...
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...General Lunar Background The Moon is Earth’s only natural satellite. Understanding how it evolved is a very important step in understanding lunar exploration and the specific features of the moon. The moon formed roughly 4.5 billion years ago. About 0.2 billion years later, the South Pole- Aitken Basin was formed by a large impact. Between 4.1 and 3.8 billion years ago, was a period known as the heavy bombardment period (Evolution of the Moon. 2012). During this period, the moon was hit with numerous impacts that left craters. 3.1 to 1 billion years ago, mare volcanism took place (Evolution of the Moon. 2012). During this time, the lava from under the crust, broke through the surface, and filled the craters with Mare. Also during this time, intermediate cratering was taking place (Evolution of the Moon. 2012). Intermediate cratering was smaller asteroids and debris smashing into the moon, creating smaller craters in the surface of the mare. From this time, until today, ray cratering has been taking place (Evolution of the Moon. 2012). These are the craters that have bright rays coming off of them. Lunar exploration began when the Soviets’ Luna flew by the moon in 1959. Soon after, Pioneer 4, sent by NASA, passed by the moon. The Ranger, Surveyor, and Lunar Orbiter missions were sent by NASA soon after that to photograph the surface of the...
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...gathering berries and nuts, were facing a lack of food. A giant monolith appeared on Earth one day and began to experiment with many of them, probing and developing their minds. Among those in whom the monolith took an interest was Moon-Watcher, the only man-ape who walked fully upright. At night, a few select man-apes were taught and during the day, they innovated. Moon-Watcher discovered that he could fashion tools with which to kill animals for sustenance—the man-apes' hunger problem was solved. Time passed and the man-ape evolved. His brain grew, he invented language and organized into civilizations, and he invented weapons—first knives, but then guns and finally nuclear missiles. Such innovations had been central in man's dominion over earth, but "as long as they existed, he was living on borrowed time." Eager to embark on another space mission, Dr. Heywood Floyd arrived at the Florida launch location after meeting with the president. He offered no comment to the press, nor would he reveal the details of mission to the crew that served him so faithfully on board or to his Russian friend whom he encounters at the joint U.S.-U.S.S.R. space station, a stop on his journey to the Moon. Upon his arrival, Floyd is greeted by a top official of the Moon colony and whisked off to a meeting. A lead scientist explains that they had found a magnetic disturbance in Tycho, one of the Moon's craters. An examination of the area had revealed a large black slab, called Tycho Magnetic Anomaly-One...
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