Process laboratories Essay Example | Topics and Well Written Essays - 250 words

Process laboratories - Essay Example This implies that more and more liquids rich in highly volatile components are being re-used back in the column. Separation then becomes easier and thus fewer trays are required to achieve the same operation degree. Minimum tray is needed under total reflux conditions that are distillate and are not withdrawn. On the contrary, as the reflux is reduced, the line of operation of the rectification section goes towards the equilibrium line (Owens, 2009, pp24-33). The ‘pinch’ between the operating and the equilibrium lines are highly pronounced and many trays are required. Distillation is the most widely used method of separation in the chemical process industries. Distillation uses about 24% of the total energy. Refineries rely heavily on distillation for separation of complex mixture of compounds found in crude oil into the products for sale. Distillation uses about 40% of all the energy consumed in refineries (Owens, 2009, pp24-33). First, distillation method is viewed from a steady state to make sure the process remains within safe working

Green buildings, global warming and clean energy Essay Example for Free

Green buildings, global warming and clean energy Essay Man’s failure to act today could result in an unsustainable planet characterized by warmer temperatures that may snowball out of control, it would lead to extinction of certain animal species, an increase in sea levels thus causing more natural disasters such as hurricanes or numerous diseases, less water availability in third world countries thus leading to conflicts amongst them and the spread of tropical diseases such as malaria. (Mc Carthy, 2001) Consequently, it is incumbent upon man to establish ways in which he can reduce global warming. This can be achieved by using the right kind of energy i. e. clean energy since this is responsible for emission of greenhouse gases which cause global warming. The paper shall dwell on how man can achieve the latter through green buildings. II. Claim of fact A) The major problem being tackled is that of global warming. Studies have shown that the amount of green house gases found in the atmosphere tend to stay there for a very long time. This means that global w is a harsh reality that may not disappear without human intervention. (Schneider, 2002) 1) Increased diseases and disasters Firstly, the phenomenon of global warming is going to cause warmer climates in the Northern parts of the world such as the United States. Consequently, vectors such as mosquitoes will increase tremendously. This implies that diseases such as malaria may start appearing in such countries. The future generation of Americans has a right to be protected from such a predicament because current occupants did not have to deal with such a problem. One only has to look at how some third world countries are having a difficult time handling this matter in order to understand the seriousness of the issue. Meteorological forecasts have shown that if the earth gets warmer, oceans and other water bodies will keep on rising. This means that the occurrence of hurricanes will be much more than it had been previously imagined. In 2004 and 2005, the country was plagued with very deadly hurricanes that caused tremendous damage to concerned parties. Since there is a possibility of preventing such occurrences, then individuals must carry out their responsibility of ensuring that it is enacted. (Godrej, 2001) One of the worst outcomes of this problem of global warming is extended periods of droughts and prolonged heat waves. A number of countries in the world still depend on natural rain alone to grow their crops and as sources of water. These third world countries currently face the problem of water shortage and the situation could get worse if droughts keep occurring. Such situations could cause a strain among affected communities thus leading to conflicts or war. These developing nations have provided Americans with numerous investment opportunities and any problem that arises in those regions could tremendously affect individuals within the US. (Nordhaus, 1998) 2) Economic consequences If there will be more disasters occurring in the world, then one cannot undermine the economic consequences that the US itself will be grappling with. The hurricanes in New Orleans caused losses amounting to billions of dollars. The country cannot afford more disasters such as these because its economy will begin staggering in ways that had not been anticipated. The loss of lives and property among future generations could ruin their economy and it is therefore negligent for current citizens to merely sit by without doing something about it. In close relation to the latter mentioned scenario is the emergence of tropical diseases. Developing nations spend so much money treating such diseases. Additionally, the lives lost as a result cause huge dents in their economy. The same thing could happen to the United States and other western nations if nothing is done today. (Van Arsdol, 2004) 3) Melting ice caps Lastly, the problem of global warming can and has caused melting of ice caps that could lead to other consequences as shown below; a) Rising sea levels b) Global outbalance c) Endanger plant and animal life d) Snowballing temperatures If global warming continues unabated, then chances are that ice caps will keep melting and the excess water will head to the oceans and seas. Currently, glaciers and permanent snow account for five point seven million cubic miles worth of water. If even some portions of this ice were to melt into water, then seas and oceans could rise by dozens of feet. Since this may occur gradually, then chances are that those low attitude regions will be ruined by this. (Clout, 2008) If ice caps continue melting, then chances are that the ecosystem as we know it today would be thoroughly messed up. This is largely because ice caps emanate from fresh water. If they are redirected into the sea, then the sea would loose its saltiness thus leading to a distortion of gulf currents. What this means is that ocean currents will change temperature conditions within Western Europe and North America. This means that organisms that had become accustomed to those temperatures will no longer survive in such adverse conditions. Melting ice caps will affect animal and plant life owing to the fact that these creatures will have new climatic conditions. Since not all life can change at such a fast pace or in accordance to present circumstances, then chances are that only the most adaptable will remain. This means that so many species may become extinct. Future generations will never get a chance to see such life or benefit from them. Ice cap melting can cause snowballing temperatures because ice caps are important sunlight reflectors in the world today. If they are reduced, then chances are that only the oceans will be able to reflect off sunlight. However, compared to ice caps, oceans are much darker in color yet dark colors tend to do more absorption that reflection. This implies that the earth will keep getting warmer, more ice caps will keep melting and the cycle continues. (Maslin, 2004) B) Demographics of the study The latter study will focus on the United States as the primary geographical region. However, some generalizations applicable to the rest of the world will also be done. In terms of corrective actions, the study will target some of the things that The United States citizenry can enact in order to curb this problem. Consequently, the research will focus on some of the changes that persons from all ages can enact in order to deal with such the problem of global warming. Since the highest numbers of buildings are found in cities, then this research will target Metropolitan areas within the country. III. Claim of value If man does not take action now, then chances are that global arming will exert a heavier impact on him. The situation can spiral out of control and this harms people who may not have caused it in the first place. For instance, persons in the third world produce minor fractions of carbon emission to the atmosphere but will be the first to feel the effects of droughts and other natural disasters. Global warming needs to be taken as a personal responsibility by all members of humanity. It is a known fact that the one of the greatest pollutants within this age is man. He has the ability to make conscious decisions that do not just benefit him alone but his surroundings as well. (Holton et al, 2003) A. Description of my angle 1) It is man’s personal responsibility It would be selfish to live for only today without thinking about how future generations would survive. If this earth’s forefathers had taken up the same attitude, then current generations would not have been alive today. Part of man’s responsibility is to ensure that he makes the earth sustainable for himself and his descendants too. (Lange et al, 2008) The latter view is one held by environmentalists and other individuals interested in preserving the environment. Part of what constitutes morality in man is his concern for his surroundings. If every single individual lived for himself or herself, then the world would be a chaotic place. Additionally, it has been argued that failure to take action today could lead to a great amount of risk. While some parties hold that global warming is not a real concept, the effects that could arise if the phenomenon was not real are still quite positive. The country and indeed the world would have much more to loose if it turns out that global arming is real and nothing was done about it rather than if it turns out that it was not real and something was done about it. 2) It would be costly to the economy In a report released by the UNEP during the year 2001, it had been asserted that not doing anything about global warming could cost the country up to two hundred billion dollars worth of revenue. The consultants who attended the latter conference asserted that this could rise to five hundred or one thousand billion dollars in subsequent years. If man may not be moved by the environmental issues that are affecting him, then perhaps these staggering economic figures could be shakier. 3) Whether it is a natural or man made processes is irrelevant The truth of the matter is that man has the ability to alter a natural process since this natural process is negative. Regardless of the fact that global warming may be a natural or artificial process, a rise in temperature will destabilize the environment. This means that biodiversity will decrease and so will food production. The current rising populations will not be sustained by their food production efforts and this could be very disastrous as it could cause millions of death. The latter scenario can even be compared to a practical occurrence. If one was to find out today that he or she was going to die, then it would not make sense to find out whether that death is due to natural or man made causes. All that really matters is that the person gets some help to prevent the death from occurring. Opponents of global warming may claim that this is nothing but a natural process. However, whether or not it is a natural process does not change the negative effects that it could cause to man. It is therefore essential to understand that such a global system can be altered for the betterment of society. B. Description of counter claims to this value 1) Right wing politicians and industrialists stand point Other groups claim that global warming effects are not as adverse as some people may claim. In fact such attitudes have infiltrated into political decisions within the Country. During the past presidential regime, the United States has been one of the least enthusiastic western countries in terms of its environmental sustainability policies. Some politicians believe that the country ought to dwell on â€Å"more pressing† issues such as the need for energy security. Consequently, such individuals have assented projects that increase carbon emissions in the atmosphere with little regard for the effect that this may have on the earth’s climatic conditions. In the US, industry lobbyists tend to oppose the views held by environmentalists and their actions are usually supported by right wing politicians. Traditionally, left wing politicians tend to be concerned about the overall good of society while right wing leaders tend to concentrate on building a capitalist economy. These perspectives have often led to a locking of horns when it comes to environmental issues such as global warming. (O’Hare, 2005) 2) Lack of â€Å"hard facts† Some skeptics claims that global warming as a phenomenon still leaves so many questions unanswered. They assert that there is a lack of compelling evidence to show that these effects will actually occur. In fact, some maintain that most effects are mere forecasts. In close relation to the latter angle is the fact that some scientists believe that global warming is a way in which the earth can balance off certain excesses. For instance, while temperatures may be going up in other parts of the world as a result of the phenomenon, others in the North East American region will be going down thus showing that the system will balance itself out. Adherents to this theory claim maintain that when an anomaly occurs such as a hurricane, then this will be labeled as a piece of evidence by environmentalists. These opponents further add that global warming enthusiasts tend to disregard contrary occurrences even when this is representative of common weather patterns. For instance, a study conducted along US coast lines some time in 2006 found that greater death rates have been recorded there because of increased population and wealth in these coastal towns and not as a result of greater intensities of the hurricane or as a result of global warming for that matter. Also, some scientists believe that the earth’s rising temperatures could be as result of coming out of the ice age. (Hardy, 2003)In other words, they claim that it is very normal for earth temperatures to increase since this is just a phase. 3) Business men’s stance on the matter A certain crop of individuals are not as enthusiastic as environmentalists when it comes to global warming. These individuals are businessmen whose work entails emission of carbon particles. The latter are required to invest heavily in â€Å"green† strategies that may cost their businesses a lot of revenue. Most of these business men tend to look for ways in which they can circumvent such obligations and one way in which they do this is by claiming that global warming effects are not that prevalent or they do not exists. They therefore posses ulterior motives in holding such a point of view. (Allaby, 2004) IV. Claim of policy A) Methodological plan to solve the problem The problem of global warming can be solved by embracing clean energy through the use of green buildings. Focus is on the United States because the latter country is at the centre of the world economy and its initiatives can serve as an example to other countries of the world that also need to embrace this fact. The latter country needs to pass legislations for designated residential and commercial houses to be green buildings. Statistics on the need for green buildings indicate the following;

mariah carey :: essays research papers

Mariah Carey is diva. Her hits have spanned two decades and have broken records long held by music heavyweights like the Beatles and one Elvis Presley. Her concerts have grown exponentially and she consistenly sells out venues across the globe. Her success has allowed her to throw millions and millions of dollars around as if it were petty cash. But she insists, she's still just a girl from New York. Mariah grew up on Long Island, daughter to hard working parents. Her father Alfred Roy, half Venezuelan, and her mother Patricia, Irish, instilled strong values in their baby Mariah. Life was tough for Mariah, but she kept her chin up. She worked her way through Oldfield Middle School and graduated Harborfield High School at 17, and one day later she moved to New York City. Mariah had stars in her eyes and an astounding voice backing up those dreams. She is known for an eight octave voice level, something nearly unparallel in the music industry. But, as anyone who's worked in the industry knows, talent doesn't always equal superstardom. But Mariah had a few other things going for her as well. She was able to grab a gig working as a backup singer for Brenda K. Starr, who was so impressed with Mariah's voice that she volunteered to pass along her demo tape. Starr passed it to Tommy Mottola, a musical mastermind, the man behind Sony Music and Columbia Records. Tommy loved it; and apparently loved her as well. The two wed in 1993. But before the couple exchanged nupitals, Mariah released her first album, a self-titled, heavily played smash success. The album would set into motion a number of the records Mariah was able to shatter during her career (most consecutive #1 singles, first female soloist to go straight to #1, a #1 hit in each year during the 90s). Her success was cemented with Grammys for Best New Artist and Best Female Vocalist. Mariah's ever-important sophomore album (which seems to make or break a number of artist - see Hootie & The Blowfish) failed to disappoint. "Emotions" had three big hits and sold quite well. "Music Box" would follow, along with "Daydream", "Butterfly", and "Heartbreaker." Apparently, the record companies are just as pleased as the American public.

Save the Earth, Save Mankind

Good morning Miss and my fellow classmates. Today, I would like to talk to you about topic on â€Å"save the earth and save mankind†. My dearest audience, imagine it’s after class now and you’re heading back to your car under the bright hot sun. After you get in the car, you grab some tissue and wipe all your sweat. What would you do after using the tissue? Well, let’s be frank. We wind down the window and just throw them outside. It is fun doing it when you see no cars behind or beside you. Let’s pollute the earth and hopefully clog the drain.We would love to swim in the flood. Next, imagine you just woke up from your sleep, went to wash up while leaving the air conditioner on. After washing up, you feel like having a cold soft drink in your room. So you open up the fridge saw some chocolate bar, hesitate a while, grab a can of soft drink and went back to your room. While you’re about to step into your room, you feel like having a bar of cho colate, so you go back to the fridge, get a bar of chocolate and went upstairs. Now the most enjoyable magical moment in this morning is the moment you step into your room.With a can of soft drinks, a bar of chocolate and most importantly is the cold enjoyable CFC releasing room. What more to ask in such relaxing morning? Imagine your friend called you up and he asked you to come over to his walking distance house. What would you do? Well of course you start your car and drive to his house because it is an irrational act to walk to your friend’s house. Reason because you’ll be a victim to kidnappers? Unfortunately no, but something even worse than being kidnapped, it is because the sun will melt you down and the distance will break your leg.Let’s drive more and burn more fuel to release more carbon dioxide and carbon monoxide to the air. Who says we cannot fight god’s creation? We can increase the earth temperature and defeat mother earth with greenhouse effect! Imagine you’re a person with the authority to voice out in your country. In order for a country to develop, the best way is to develop land. So let’s organize campaign to support deforestation! Let’s celebrate for every single tree being cut down and you’ll see new project in the future. Let’s support burning down more forest and hope for a better economy.Burn more and increase the greenhouse temperature. We would love to inhale polluted air but not with forest around us. Imagine you’re living in the arctic, freezing cold, no place to go during winter so you just stay at home and pray that the people from other region can help melting the ice by increasing global temperature. The best part of melting the ice is not to solve the cold temperature but to increase the sea level. Let’s pray and hope for a rise in sea level. Let’s cover more land with sea and with this increase of sea level let’s hope for another mega tsunami.We shall wait for a brand new video on this beautiful tragedy. Let us all leave the air conditioner in the room turned on while we’re not using. Let’s drive more and burn more fuel. Let’s burn more and increase the earth temperature. Let’s increase the temperature and melt the ice. Let’s melt the ice and increase the sea level. Let’s increase the sea level and pray for more tragedy. Now please take a minute to think! In the end, who is the one suffering? Who is the one will pray for a better day to live? Who is the one begging for another chance to fix the problem?We are the one. But don’t be afraid. I’m here to remind you the ways of preventing. Let me start with the easiest way which is start recycling. Since young, we were all taught to learn how to recycle by differentiating different types of material that can be recycled such as glass, paper, aluminum and plastic. This is the easiest way that we can start to help saving the earth. By recycling, we reduce factory production and therefore it reduces the air pollution as well. With one stone, we can kill 2 birds, it’s worth a shot.

Birmingham Letter Illusions Essay

Letter from Birmingham Jail Allusions in Section 3 Martin Luther King’s Letter from Birmingham Jail is one of the most well known documents in American history. King’s profound ability to articulate important ideas, values, concepts and Biblical perspectives made for some of the most powerful and inspirational pieces of American literature ever produced. One technique that King used in his public speeches and letters was his allusions to historical figures, the Bible and opposing congressmen. During the 60’s when cultural prejudice still held strong roots in Congress, it was King’s talent to inspire the public that revolutionized America’s racial injustices. King’s frequent use of allusions in his famous Letter from Birmingham Jail proved his intelligence and greatly attributed to his success and popularity during the 1960’s. His allusions demonstrated his referential capabilities while also making his messages readily relatable to the public. It was often said that it was not King’s intelligence that made him seem so acumen, but that he was â€Å"well read†(knew much from reading). His frequent allusions to major documents and famous statements in contest to his adversaries ultimately lead to his dominance in public speech. In the paragraphs 12 through 14 when king references the election of mayor Albert Boutwell, he states, â€Å"We are sadly mistaken if we feel that the election of Albert Boutwell as mayor will bring the millennium to Birmingham† in paragraph twelve. The millennium is an allusion to a specific verse from the Bible’s book of Revelation interpreted as the 1,000 years in which Jesus comes back to earth to restore peace. He made many correlations to the Bible and major public documents, such as the Declaration of Independence and the Bill of Rights to make his arguments accurate and mainly understandable by restating vital rules and quotes that even the illiterate could comprehend. In these paragraphs he quoted the Bible by using phrases like â€Å"moral light, â€Å"abyss of despair† and â€Å" unjust posture. † King used the word â€Å"wait† in this section of the letter multiple times as a allusion to the current denial of rights to African Americans that had been going on for the last 340 years. He also stated that â€Å"justice too long delayed is justice denied† in correlation to the current racial dilemma in America at the time. All of these direct references made for some of the most significant and powerful American literature ever created and made Martin Luther King one of the most successful authors in this period of civil revolution. By reinforcing his argument with allusions that the public could relate to, King was able to greatly impact the civil rights movement of the 1960’s and ultimately bring around the social turning point of the century that provided racial equality to all and smother prejudice in America thereafter.