Biology Article Analysis Essay Example | Topics and Well Written Essays - 750 words

Biology Article Analysis - Essay Example Miller and several others started to construe that life started not in heat but in ice-at temperatures that hardly any living creatures can currently subsist. The very rules of chemistry may have preferred ice. If existence on Earth began from ice, then man's probability of discovering life in another place in the solar system-not to point out anywhere in the galaxy-could possibly be superior than we could ever think of. The researchers were amazed by the results of the samples which appear better in cold temperatures rather than in room temperatures. With these findings, they tried to submit their documents to a well-known science journal but they were rejected. The reviewer had different theories and notions about their findings such as the idea that the molecules were formed while thawing. Being challenged by this, the researchers conducted more experiments to strengthen the validity and reliability of their claims. When the time came for Trinks to go back to Hamburg in 2003, the scientist had created an assumption that ice was responsible not only for just concentrating chemicals. The ice facade is a plane of positive and negative charges; Trinks predicted those charges seizing specific nucleobases and piling them like Lego, aiding them to combine into a series of RNA. For years scientists had attempted to force RNA chains to develop under all types of circumstances without the means of enzymes; this feat was reached when they were able to form a chain which consisted of about 40 nucleobases. When Biebricher examined his own trials, he was surprised to discover RNA molecules up to 400 bases in length. In more recent, some of his experiments he states he has monitored RNA molecules 700 bases in length. The scientist's outcomes are incredible that some contemporaries have questioned whether unintentional contamination is a possible reason. Orgel supported the experiment. He stated that it was a remarkable result. The experiments and finding of the research opens up possibilities of being able to answer the origin of life on earth as well as the probability of man being able to live elsewhere in the solar system. The common themes that I have noticed on the discussions in the article that I had are: identification and justification of the experiments and findings of different researchers and scientists, the scientific explanations of opposing views and reactions regarding the experiments, the collaboration of experts in the field of biology. Aside from this, the article also provided an insight as to how tedious the jobs of researchers are for it takes years or even decades to be able to come up with breakthrough findings which needs adequate amount of evidence for support. Even though the research already existed for decades, the public still has skepticisms that can be used to challenge, oppose and criticize the works of the researchers. Miller

Ground Segment and Earth Station Engineering for Satellite Coursework

Ground Segment and Earth Station Engineering for Satellite Communications - Coursework Example Satellite communication is a form of wireless media in which the free space is used for communication. One important advantage of such media is that a large geographical area can be covered without actually carrying out the physical wired networking. Such a communication with the help of satellites is possible when the signal is sent from ground stations to the satellites placed in geostationary orbits, which in turn sends the signal back to another ground station/s located in different city, country or region depending upon the placement and alignment of the satellite. The ground based infrastructure plays a crucial role in this transmission process. The earth station closely monitors the movement of the satellite and keeps sending the signals to it. The signal are received by the transponder and then sent back. A number of commercial and domestic applications are now dependant on the satellite communication. With emerging technologies, standards, and protocols the usage of satellit e communication in transmission, broadcasting and internet is also becoming cost effective. During this training I learned about the fundamentals of ground segment and earth station and how the satellite communication has evolved over the years from being a commercial facility with huge dish 30 m diameter antennas to small sized rooftop 0.6 m dish antenna for receiving DTH broadcasts. This has effectively made it possible even for the ordinary consumers to make use of satellite communication. Satellites can provide communication and broadcast coverage even to places like valleys, dense forests, mountains and difficult terrains where it is not possible to erect communication towers or dig channels for communication lines. All this can be provided at practically no extra costs. What we require is a receiving dish antenna with other gadgets used at other similar places. Satellites can

Attack on elements of society Essay Example for Free

Attack on elements of society Essay The Crucible is set in a puritan town in New England, Salem Massachusetts. The girls are caught dancing by the Reverend Parris the parish minister. This then start of a witch-hunt, which gets the town talking. People that are innocent are accused and the term name names or else is being used by the courts. The innocent people of Salem get accused, and punished. This is an allegory of McCarthyism because this is what happened in the trials in 1950s, society was shattered by a rumour and fingers were pointed at innocent people. Its also an allegory of McCarthyism because it shows the court officials being unfair and unjust, just how they were in The Crucible. The first way in which the setting of Act 3 can be interpreted as an attack on the severity of the authorities in Salem and 1950s America is shown through the stage directions Arthur Miller presents us with. Firstly uses the adjectives forbidding, empty and solemn to describe the room on the stage. The effect this has on the audience is curiosity and concern and this builds up a sense of tension within the audience. Also while we see all of this there is silence. In drama, silence is more powerful then words of actions. The silence and appearance surrounding the stage would build up a very strong sense of tension within the audience. Another reason for silence maybe that Miller wants to convey the presence of or the sign of evil in the court and probably that something is wrong, not right, or something bad is going to happen. The other way Arthur Miller has an impact on the audience is by using symbolism and imagery. In the opening of act 3 Arthur Miller has two high windows. This makes the room sound very familiar to a prison cell and again a prison cell is where you dont want to be and maybe Millers trying to sat that the courts were like a prison. Also not forgetting the sunlight pouring through. Back in the days traditionally sunlight was meant to be good luck and also it was meant to be the representative of God and truth. This can have a great effect on the audience because it gets them thinking and into the mood, and that the current problems surrounding Salem arent going to get any better but maybe worse. Again this an attack on the elements of society because it shows that the court was a place where people werent treated fairly in the 1950s and that the authorities in America were harsh and wanted people to get into all sorts of problems and trouble and this is what exactly Arthur Miller went through and trying to get across by writing The Crucible. The second way that Act 3 can be interpreted as an attack on the severity of the authorities in Salem is by Millers exposure of the characters in The Crucible. The way they dress and act. In the actual film most of the men are seen wearing black clothes, this may put forward that Salem is a holy religious society and believe very strongly in Christianity. If you take Judge Danforth, he adopts a blinkered attitude and refuses to use common sense and logic in dealing with these cases. His exact loyalty blinds him from the truth and if he believe that the people accused were with God and announced them innocent he would be accusing the girls of lying, and also fact that he is too worried of calling of the witch trials because what would the people of Salem think of him and the fact that is reputation is at stake. This can be interpreted as an attack on elements of society because it shows that even the authorities in this case the Judge arent always fair even if they are people of high authority or religious. This is how Arthur Miller got his point across that the authorities of America in the 1950s were unfair and unjust and wanted to put down as many people as possible, on the whole the authorities were very harsh and severe on punishments. The third way in which the setting of act 3 can be interpreted as an attack on the severity of the authorities in Salem and 1950s America is by the language Arthur Miller has used in the opening lines in the scene. Judge Hathorne asks Martha Corey if she denies being a witch. Martha Corey claims she knows not what a witch is, to which he replies, how do you know then that you are not a witch. We see Hathornes question after question on Martha Corey gets her paranoid and the pressure is huge on her, to come up with the answers quickly but if she takes too long she maybe considered more of a witch and therefore this sets the mood and tone for the scene. Its as if Judge Hathorns trying to possibly trick into saying that shes a witch rather then finding out the exact truth.

Agriculture in a Market Economy and Sustainable Alternatives Essay

Agriculture in a Market Economy and Sustainable Alternatives Imagine driving through any number of Midwestern states, passing acres upon acres of corn or soybeans, feeding lots in Kansas with thousands of cattle, or rows of poultry barns in Virginia that leave their memories in your nose for miles down the road. Today’s agricultural system in the United States is one that follows capitalism and demands competition, which usually means make as much as you can with as few resources as possible. These practices tend to be harmful to both environmental and human health, are not sustainable in the long term, and have forced many farmers out of the industry when they can’t compete with the big companies. Many people, including Christians, believe they are called to be stewards and protectors of the earth with a responsibility to act with justice towards other human beings. While there are Christians and other people who hold strong ethical beliefs involved in conventional methods of agriculture, others are seeking more just and sustainable methods of producing food. Modern agriculture in the United States followed in suit with the Industrial Revolution and searched for ways to become bigger, make more money, and be more efficient. Just as in factories, many farms began specializing in one crop or livestock, spreading onto more land, and using synthetic fertilizers and pesticides to encourage growth. For many farmers, to participate in the market economy where the government subsidizes many crops and farm products and market prices are highly unstable, the only way to remain competitive is to produce a surplus. In addition, they are playing into an export economy, which has major implications for communities and the envir... ...â€Å"Linking Tables to Farms.† In Eric T. Freyfogle (Ed.), The New Agrarianism: Land Culture, and the Community. pp17-27. Washington: Island Press. Long, Cheryl. (1999) â€Å"Certified Organic.† Organic Gardening 46(6), 44-46. Retrieved November 19, 2004, from Academic Search Elite. Madden, Patrick. (1988). â€Å"Low-Input/Sustainable Agriculture Research and Education- Challenges to the Agricultural Economics Profession.† American Journal of Agricultural Economics 7 (5), 1167-1172. Retrieved November 19, 2004, from Business Source Premier database. Orr, David. (2001). â€Å"The Urban-Agrarian Mind.† Eric T. Freyfogle (Ed.), The New Agrarianism: Land Culture, and the Community. pp93-107. Washington: Island Press. Snowe, Olympia . â€Å"USDA Organic Food Standards.† FDCH Press Releases 21/Oct/2002 . Retrieved November 10, 2004 , from Military and Government Collection database. Agriculture in a Market Economy and Sustainable Alternatives Essay Agriculture in a Market Economy and Sustainable Alternatives Imagine driving through any number of Midwestern states, passing acres upon acres of corn or soybeans, feeding lots in Kansas with thousands of cattle, or rows of poultry barns in Virginia that leave their memories in your nose for miles down the road. Today’s agricultural system in the United States is one that follows capitalism and demands competition, which usually means make as much as you can with as few resources as possible. These practices tend to be harmful to both environmental and human health, are not sustainable in the long term, and have forced many farmers out of the industry when they can’t compete with the big companies. Many people, including Christians, believe they are called to be stewards and protectors of the earth with a responsibility to act with justice towards other human beings. While there are Christians and other people who hold strong ethical beliefs involved in conventional methods of agriculture, others are seeking more just and sustainable methods of producing food. Modern agriculture in the United States followed in suit with the Industrial Revolution and searched for ways to become bigger, make more money, and be more efficient. Just as in factories, many farms began specializing in one crop or livestock, spreading onto more land, and using synthetic fertilizers and pesticides to encourage growth. For many farmers, to participate in the market economy where the government subsidizes many crops and farm products and market prices are highly unstable, the only way to remain competitive is to produce a surplus. In addition, they are playing into an export economy, which has major implications for communities and the envir... ...â€Å"Linking Tables to Farms.† In Eric T. Freyfogle (Ed.), The New Agrarianism: Land Culture, and the Community. pp17-27. Washington: Island Press. Long, Cheryl. (1999) â€Å"Certified Organic.† Organic Gardening 46(6), 44-46. Retrieved November 19, 2004, from Academic Search Elite. Madden, Patrick. (1988). â€Å"Low-Input/Sustainable Agriculture Research and Education- Challenges to the Agricultural Economics Profession.† American Journal of Agricultural Economics 7 (5), 1167-1172. Retrieved November 19, 2004, from Business Source Premier database. Orr, David. (2001). â€Å"The Urban-Agrarian Mind.† Eric T. Freyfogle (Ed.), The New Agrarianism: Land Culture, and the Community. pp93-107. Washington: Island Press. Snowe, Olympia . â€Å"USDA Organic Food Standards.† FDCH Press Releases 21/Oct/2002 . Retrieved November 10, 2004 , from Military and Government Collection database.

Interview with Leonardo Da Vinci Essay

The Renaissance began in Italy. While it only a affected a small amount of the population, the â€Å"rebirth† of classical culture is revered today. The general idea of the renaissance is that in Ancient Greek and Roman times we were enlightened, and then lost the light in the â€Å"dark† ages, and then became enlightened again in the rebirth of classical culture. Setting: A stage with comfortable chairs, Leonardo da Vinci sitting in one chair, the host in the other. Host: Welcome to Talk Renaissance Live, I’m here with Leonardo da Vinci, the very definition of a â€Å"Renaissance man†. So tell the audience about yourself Leo. Can I call you Leo? Leo: Um sure. Well honestly I don’t know why people like me so much, I’m a terrible procrastinator. And while I’ve had a few successful paintings, a lot of my works were more of failed experiments. Host: That is still better than most of the population. And your scientific journals still have people wondering today. You had ideas, sometimes even working ideas for things that weren’t even conceived for most of the population until this last century. What was it like working for a commission? Leo: It was ok, once I had plenty of apprentices. Apprentices meant I could spend more time on enquiries of the scientific nature. Host: So why was the Mona Lisa smiling the way she was? Leo: Well now that’s something I swore I would never tell. Host: You’re no fun, and I was wondering. Why didn’t you publish and of the scientific advances you made? Leo: Well it was a different world back then. I had more respect then most people, but if I’d tried to publish my scientific thoughts then I would have been laughed out of the building. Or killed. Host: You mentioned having apprentices later in your career, how was it like being one yourself? And who were you an apprentice for? Leo: Well when I was 14 I apprenticed to the man known as Verrocchio. He taught me many things, both in theoretical and practical fields. Even after I qualified as a master artist I continued to collaborate with him, because he was a fine man. Host: That’s our time, when we come back from the break I’ll be sitting here with Johann Gutenberg. Host: And we’re back, sitting with me is Johann Gutenberg. You may not know who he is, but he was essential to both the Renaissance and what followed. Johann: Hello. Host: How about you explain to the audience about your important contributions? Johann: I brought the printing to Europe. Host: Yes, could you explain how? Johann: Was able to make a printing system that could mass produce books, and have it be economically viable. Host: And was it? Johann: Well it was for everyone except me really. I ended up with an enormous debt and then was sued for â€Å"misuse of funds†. Host: That’s unfortunate, did you win the court case? Johann: Of course not, and he had control of my bible printing press, and half of all bibles printed. Host: And could you explain why the printing press was important? Johann: As I understand it, it meant that books and news traveled to more people, and more quickly. It helped the Renaissance, and later facilitated the Scientific revolution. Host: Wow that was an informative interview, but now we have to go to commercial break. When we come back I will be talking with our final guest. Host: And we’re back! Now as you know with the Renaissance came the appearance of humanism. We have the father of humanism himself with us today, Francesco Petrarca! Petrarca: Hello. Host: As the father of humanism, could you explain to the audience exactly what humanism is? Petrarca: Humanism is a response to the clinical scholasticism. Humanists such as myself want to create a society where are all citizens are capable of engaging civic life, being eloquent of speech and pen. Host: I see, what is scholasticism? Petrarca: It’s something that seems to be prevalent in society today, preparing people to be â€Å"good† jobs such as doctors or lawyers. It emphasizes learning minor and unimportant details for careers that relatively few will partake in. Host: Asides from being the Father of Humanism what else have you done? Petrarca: I’m also a bit of a poet. And I came up with the concept of the Dark Ages, although that seems to have gone out of style as of late. Host: Well the thought as of late is that calling it the Dark Ages is oversimplifying. It portrays the idea that humanity was briefly enlightened, and then lost it’s way, and then was enlightened again- Petrarca: Exactly! That’s exactly the point I’m trying to make. Host: Well it doesn’t agree with what modern historians generally think. They’ve been trying to make an effort to be less Eurocentric, and to try to understand concepts of the past without changing the facts to suite our ideas of what should have happened.

The Grand Strategy of the Roman Empire Essay - 1396 Words

A Review of Edward N. Luttwak, The Grand Strategy of the Roman Empire from the First Century A.D. to the Third. Edward Luttwak’s The Grand Strategy of the Roman Empire from the First Century A.D. to the Third gives a militaristic analysis of the tactics used by the Roman Empire while also highlighting parallels between Rome and contemporary U.S. military policy. Luttwak divides his book into three chapters, a chapter for each of the 3 identified systems; the first chapter discusses Rome’s use of mobile armies and client states to defend her borders. The second chapter shows border defense as was provided by small groups of marching legionary troops. The third and final chapter details the transition from an offense stance to a more†¦show more content†¦Chapter 1 entitled â€Å"The Julio-Claudian System† elaborately explained how the Empire’s hegemony required an offensive tactic. This tactic called for an â€Å"economy of force†. Riddled with charts, graphs, and maps, Luttwak displays his true military background when he shows the reader where the client states are located and how Rome picked which client states to procure. Any client state that was considered amicus populi Romani enjoyed the financial and political benefits of the Roman Empire while providing defensive measures. Chapter 2 entitled â€Å"From The Flavians To The Severi† informs the reader of Luttwak’s belief that Rome’s expeditionary units, as was used in the second century, were highly less effective than the legions of the first century because they were not as movable. The author tells us, â€Å"†¦ legions were deployed at fixed bases which, in most cases, they were never to leave again; and soldiers soon acquired unofficial families in the settlements that grew spontaneously around the legionary bases. It is sometimes assumed that this domestication diminished the army’s combat capabilities by undermining its fighting spirit†. Chapter 3 entitled â€Å"Defense-In-Depth† shows an intricately detailed ana lysis of third century Roman military strategy. Luttwak believes thatShow MoreRelatedComparing Cyrus The Great Of The Persian Empire And Emperor Caesar Essay799 Words   |  4 PagesPaper #2 The Ancient Roman Poet, Virgil, once wrote, â€Å"They can conquer who believe they can.† King Cyrus the Great of the Persian Empire and Emperor Caesar Augustus of the Roman Republic/Empire are leaders whose conviction in their rights to power establish the unwavering support of the people they lead. King Cyrus the Great rises to the throne of an expansive Persian Empire. As King, he brings virtually the entire Near East under his control. 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Soviet Union And The Cold War - 1660 Words

Former President Jimmy Carter once stated, â€Å"When I was in the White House, I was confronted with the challenge of the Cold War. Both the Soviet Union and I had 30,000 nuclear weapons that could destroy the entire earth and I had to maintain the peace† (â€Å"Jimmy Carter†). This statement has seemingly remained truthful from the point when Soviet Russia and America worked together to stem, and eventually end, the tide of Nazi Germany’s imperialistic overthrow of Europe. Since the end of World War II to the present day, relations between Russia and America have declined due to the Cold War, improved due to Russia s transition to democracy, and are reverting back to Cold War standards in relation to political involvement and economic standards,†¦show more content†¦Twelve years later, another â€Å"proxy† military conflict occurred in Vietnam when a similar division to that of the Korean War was present. The Russians once again took action to a rm the Northern, and Communist, Vietnamese, whereas America armed the democratic South. After the war dragged on and it was apparent that the South was losing, America sent in troops, illegally, to fight against the Russian armed Northern Vietnamese (Garrett). In the scope of world history, this misdemeanor committed by the U.S. drifted off into nothingness, being that it was done to combat Communism, but, at the time, it truly highlighted America’s undying mission to ensure that Communism never reached America, or any of its allies, even if that meant â€Å"doing the wrong things for the right reasons.† A final military conflict, but by no means the least important, was the Cuban Missile Crisis. In October of 1962, tensions reached a breaking point in Cuba, so much so that nuclear armageddon was narrowly averted. Going back a few years, Nikita Khrushchev, Russia’s premier at the time, and Cuban dictator Fidel Castro were in an agreement that was awfully suspici ous to the U.S.. Both of these anti-American nations being so close in proximity to the U.S. and being in an agreement with, more than likely, hidden agendas threw a large red flag in American national security. With haste, recon missions were deployed in an attempt to discover the true purpose of