Wednesday, October 30, 2019

Nitrous Oxide Essay Example | Topics and Well Written Essays - 1000 words

Nitrous Oxide - Essay Example Nitrous oxide (N2O) is an atmospheric trace gas that contributes to the greenhouse effect. It is also involved in the catalytic destruction of ozone in the stratosphere and is increasing in concentration by about 0.25% per year. The increase is believed to result from fertilizer use, emissions from internal combustion engines, biomass burning, and industrial processes (Khalil 1995). It is naturally produced by nitrification and denitrification in soils and in the oceans, and is destroyed in the stratosphere via photolysis (90%) and reaction with excited atomic oxygen [O(1D)] (10%). Its atmospheric lifetime is between 100 and 150 years. Although the major sources and sinks of N2O are known, they are poorly quantified and inadequately balanced, both in terms of mass exchange and in their N and O isotopic composition. Stable isotopes have been used in the past to constrain sources and sinks of other atmospheric trace gases but have yet to be successfully applied to N2O. The isotopic approach to a global N2O budget is hindered by the wide range of observed isotopic values for each of the major natural sources, making it difficult to assign a unique value to each of the source terms. Soil flux samples have been shown to be variable but consistently depleted in both 15N and 18O relative to atmospheric N2O. Oceanic samples have exhibited a trend similar to typical nutrient profiles, with slightly depleted surface waters becoming progressively enriched along the nutricline and stabilizing with depth. Early analytical methods employed infrared absorption techniques (Wahlen 1985) or required decomposition of N2O with subsequent analyses of N2 and CO2. The use of direct injection techniques was introduced in 1993 when Kim and Craig reported heavy enrichment in both the N and O isotopes in two samples of stratospheric air. They proposed that a stratosphere to troposphere return flux of heavy N2O could balance the observed isotopically light source terms, although a simple mass-balance model showed that this led to a considerable overcorrection. Direct injection of N2O was subsequently shown to result in erroneous enrichment of 15N and Delta18O when contaminated by trace amounts of CO2. We present results for 15N and 18O of N2O obtained from samples collected in the lower stratosphere. Five samples were collected at midnorthern latitudes on board NASA's WB-57 aircraft, and two samples were collected at high northern latitude during the 1988 Juelich balloon campaign. We also measured, for comparison, the isotopic composition of tropospheric N2O sampled in La Jolla, California, under clean air conditions. Nitrous oxide mixing ratios decreased with height above the tropopause, whereas the heavy-isotope composition of the remnant N2O was found to be increasingly enriched. If the process responsible for this enrichment is an irreversible sink and if the fractionation factor remains constant, the data should obey what is known as a Rayleigh distillation, in which the resulting isotopic enrichment is related to the fraction remaining by the equation (1) R = R0 x fAlpha-1 where R and Ro are the residual (stratospheric) and initial (tropospheric) heavy-to-light isotope ratios, respectively; f is the fraction of N2O remaining (residual concentration divided by the initial concentration); and is the ratio of the heavy-to-light reaction or photolysis rates. This relationship

Monday, October 28, 2019

How Charles Dickens shows Miss Havisham change over the novel Essay Example for Free

How Charles Dickens shows Miss Havisham change over the novel Essay How does Dickens show the change in Miss Havisham over the course of the novel?  Great Expectation is about a young boy named Pip and follows him throughout his life. Pip meets Miss Havisham a lady with a broken heart who has an adopted daughter named Estella, Estella is a pretty young girl that pip falls in love with. A close analysis of the novel reveals Miss Havisham is not the person she is perceived to be. The bitter and vengeful Miss Havisham is one of the main characters in Dickens novel Great Expectations. She is central to the novel and holds the plot together. Dickens waits until Chapter 8 to introduce the character to the reader, like Pip we are scared and frightened when we meet her for the first time. I should have cried out, if I could. This shows that Miss Havisham intimidates Pip; and as a result, we fear for Pip; and are also uncomfortable as readers. Also, the word haunting is associated when we think of Miss Havisham. This is because of her ghostly appearance, her disturbed state of mind, and the way she haunts Pip. If we are to say haunting is when someone/something has a lasting, negative effect on something, it is evidently shown that Miss Havisham is a gothic, disturbing, melancholic character. Dickens uses descriptive writing to describe Miss Havisham as a wealthy, well dressed woman in rich materials satins, and lace, and silk. Dickens uses imagery of luxury and opulence to give a clear picture in the readers mind about how Miss Havisham is dressed. Dickens also uses a simile withered like the dress to show how Miss Havisham has been trapped in time and grown old and decayed along with her white wedding dress, also reflecting her mental state. Dickens presents her to be a living dead, waxwork and skeleton as there is nothing healthy in her. She has allowed herself to get wasted and now she looks more dead than alive. Both Miss Havisham and her adopted daughter Estella, manipulate Pip for their own sick fancys. Miss Havisham states to Pip that her heart has been broken and she wants diversion. She also has had enough of men and women therefore, enclosing herself in her house. Miss Havisham was jolted at the altar by the man she thought she loved. As a result of her heartache and pain, she stopped the clocks at twenty to nine, and left the house and herself exactly the way it was on that day; never seen the sun since you were born. In addition, Miss Havisham uses Estella as a ploy, to seek revenge on all males. Estella is a young lady, who is very pretty. Estella is very rude and patronises Pip. She calls him by the name of boy which makes us feel sorry for Pip and dislike Estella. Estella known to be a beautiful, self possessed, scornful young lady makes Pip aware of his common working class background. He is powerfully attractive to the mysterious ways of Satis House and Estella. He accepts her cruelty as he truly loves her, he follows her taunting and harshness and wishes to become a rich gentlemen; to please Estella and to stop her name calling and for her not see him as coarse, rough boy. This is when Pip wants to higher his social class, starting the course of Great Expectations. Miss Havisham is the feeder to the way Pip thinks and manipulates him into thinking that she is the benefactor for him becoming a gentleman living in London. She leads him to believe this by slyly hinting that she knows more. Mr Jaggers is your guardian I understand? This makes pip believe that it is her that is helping him to becoming a gentleman. Although in the end we find out it is a convicted he helped when he was younger. Satis House, the reflection of Miss Havishams state of mind in every crevice; decaying. She has enclosed herself within the walls of Satis House letting no outside world in. The only way you can get in is through the front gate which is guarded at all times. The house remains to be the exact same as when she left it. The garden with trees fluctuated everywhere, grass in every crevice. This shows that its hasnt been cared for, just like Miss Havisham hasnt. The interior is also decaying. In Chapter 11, Pip goes into her room and sees a A bride-cake. Mine! that was seeming to grow. It is as if it is a part of her, a part of her past and past happiness that has gone. This makes the reader feel sorry for her, as she is truly heartbroken. Miss Havisham has been presented by Dickens as a cold, heartless character, only thinking about herself. Dickens makes us believe this by the way Estella is treated by her; the way Miss Havisham uses her to break all males hearts. Love her, love her, love her! Miss Havisham tells pip with passionate eagerness whatever Estella does he will love her. She curses him like a evil persuasive witch doing a spell. This shows that she focuses on one thing and must live up to a target; it is an unhealthy love its like obsession. Estella now cant love; she doesnt know how to love. Estella cant even love her Miss Havisham. This all changes in chapters 38 and 49 Miss Havisham feels guilty for making Estella becomes a cold heartless person. However, when Estella rebels to her adopted mother, Miss Havisham is truly sorry for her harsh actions what have I done? She says this repeated several times, truly sorry. As she has no idea what she has done wrong. Miss Havisham cant die without knowing she is forgiven. Dickens has shown he unmarried contradictory character Miss Havisham, has gone through many changes throughout the novel. Although Great Expectation is a novel about Pips life, it includes Terror, love, drama, and excitement; these factors of the novel are part of how Miss Havisham has changed.Towards the end of the novel in chapter 49 Dickens use of ominous language prepares the reader the Miss Havishams death. Funeral music, the cathedral chimes All these quotes prepare the reader for something to go wrong, like a death is going to occur. Dickens also explains when he walks pasted the priory garden, seemed to call to me that the place was changed this shows the future will change by a death. Miss Havishams death made a big difference to the novel. In chapter 49 Miss Havisham dies after server burns from an accidental fire. Her death is very painful. She was shrieking, with a whirl of fire blazing all about her, this death in some ways seems to release her from all her hurt and pain. The fire is symbolic; pip dragged the heap of rottenness in the midst, and all the ugly things that sheltered there. This shows it dragged all the decay and the living death away. The fire ended it all.   In conclusion to this Miss Havisham has changed from an evil witch who only thinks about herself to a woman who feels guilty for all the things she has done.

Saturday, October 26, 2019

Essay --

RESEARCH PROPOSAL ASSESSMENT OF CNR 9 COMMUNICATION SYSTEM COURSE IN ROYAL SIGNAL REGIMENT INTRODUCTION 1. Military organization was the unique entity which is self-contained organization with the complete equipment’s for their vision and mission. For the purpose of the training and operation, one of essential part was the communication system. The communication system which belongs to any organization will become their core competencies once they are valuable, costly to imitate, rare and non-substitutable. Communication system provides the ability to mass combat power. It is a way of architecting a battle or a campaign. It is a calculated to create possibilities for future force utilization. Effective communications determines how, when and where the force fight in a theater, where and when combat power can be massed. â€Å"Without the communication I only can command my table† is an expression attributed by Mc Arthur. Most importantly, the effectiveness of communication at the operational level is a part of the concept of operations. 2. As indicated in the Army Transformation Plan 2012, communication plays an important and significant role in ensuring that the army shall be a credible and versatile objective force that will be able to operate in a multi spectrum environment. CNR 9 communication system was procured last 6 year into the army inventory. More than 6000 radio set been purchased and it is consisting of HF(High Frequency) and VHF(Very High Frequency) which is fully digitized. The HF radio also known as SKY FAST and FAST NET for the VHF. The company that delivered the systems is Sapura Sdn Bhd which a local company and Thales, France is responsible to produce the product inclusive the training toward the users. Thales... ... assigned to take charge in conducting, distributing and collecting back the questionnaires. Besides that, secondary data was also collected through interviews with key management personnel of IKED as well as the SAPURA Sdn Bhd. Some information also gathered from magazines, academic journals, published books and internet sources in the area of radio communication courses and syllabus. DATA ANALYSIS TECHNIQUES 20. For the purpose of this research, the data obtained is analyzed using the â€Å"Statistical Package for Social Science† SPSS version 22.0 software. The techniques of data analysis consist of descriptive and inferential analysis. Descriptive analysis covers analysis on the frequency of the respondents’ respond and the interaction relationship between independent and dependent variable in this research; whereas, inferential analysis includes t-test and ANOVA.

Thursday, October 24, 2019

Allusion: Literal meaning Essay

I would have such a fellow whipped for o’erdoing Termagant (II,ii,14)Hamlet is giving instructions to the troupe of actors that has come to the castle. These actors are going to perform a play within a play and Hamlet has added some lines to the play in the hope of exposing Claudius’ treachery. â€Å"Termagant† is an allusion to a god that Elizabethans believed Muslims worshipped. It out herods Herod (III,ii,14)Herod is the king in the Bible that had John the Baptist beheaded and was responsible for Jesus’ death. This allusion is particularly important to Hamlet because like Claudius, Herod married his brother’s wife. John the Baptist told Herod that this was evil, so Herod’s wife Herodias instructed her daughter to ask for the head of John the Baptist, a request with which Herod complied. Hamlet is telling the players not to overdo their acting, not to be more like Herod than Herod himself. â€Å"For O, For O, the hobbyhorse is forgot†Hamlet is talking to Ophelia. It is right before the play is to be performed. He looks at his mother and Claudius and complains that they have forgotten all about his father, who has only died two hours ago. Ophelia tells him it has been four months. Hamlet’s response continues his pretext of being mad because he replies that his father has been dead two months, trying to convince Ophelia further that he is mad, but if a man is to be remembered after six months, he must build churches, otherwise he will not be remembered any more than a prostitute. The hobby horse allusion refers to a player in the pagan May-Day festivals and is sometimes associated with prostitutes

Wednesday, October 23, 2019

Branches of Philosophy Essay

There are five types of branches in philosophy. These branches can be categories as Metaphysics, Epistemology, Ethics, Politics, and Estetics. The first branch of philosophy is Metaphysics, also known as the study of existence. Metaphysics act as a foundation in philosophy as well as the foundation of the view of our world. Metaphysics is very important to all of us as it help us to deal with reality by explaining and interpreting the world and nature around us. As you can see, without Metaphysics in our life, we will be unable to preserve our life as well as being ambiguous toward the information and knowledge around us, if this happen, we will have difficulty to live and comprehend the world. Therefore, Metaphysics is very important in our life. There are also some key elements of a rational metaphysics, one of the most important element would be reality. From a metaphysical side of view, reality must be understood perfectly and correctly because reality can be said as absolute and consistent. It has a specific nature independent of our thoughts or feelings. Besides reality, causality also play an important role in metaphysics. This is because everything happens for a reason and also an effect. Every entity has a specific nature and act according to that specific nature. Therefore, we can define that causality is means by which changes occurs, but the changes occurs depending on a specific nature. The next branch of philosophy is Epistemology, which is also known as the study of knowledge. This branch of philosophy is used to address the question â€Å"How do I know about it† as Epistemology is the study of our method or ways to acquired knowledge. It also relates our minds to reality by concerning how are they related to each other before determine whether these relationships are valid or invalid. Epistemology also encompasses the nature and construction of concepts. All mental things such as idea and emotion are also compasses by Epistemology. We need to have Epistemology in order to identify the true and false in our daily life and also the method or ways of evaluating certain things to acquired knowledge and experience toward the world around us. Epistemology is important because we will not be able to identify right from wrong as we are unable to think properly without Epistemology. On the other hand, we will be able to achieve our goal as well as acquired more understanding toward reality if we got enough degree of Epistemology. Flaws in epistemology will make it harder to accomplish anything. One of the key elements of a proper Epistemology is our own senses. Our five senses are valid and also are the only way we can gain information about the world around us. Besides that, logic help us to maintain consistency within our knowledge. Validity is determined by objectivity while concepts are abstraction of a certain details of reality. These are all the key elements for a rational Epistemology. Ethics, also known as the study of how a person acts in his daily life, is dependent on Epistemology because it is impossible to make choices without knowledge. From a fundamental point of view, ethics is a method or way to categorized and pursue our own values. Human needs Ethics to live. This is because without ethics, the whole world will become chaotic as all our action will be aimless and random as all of us are unable to decide a course of action. Ethics will not be able to completely help us to pursue our goal if rationality is ignored. We must all have a rational ethical standard at a certain degree which we are able to identify our goal clearly in order to accomplish our most important values. Every branches of philosophy have their own key element to achieve certain level of value. For ethics, it requires a standard of value to which all goals and actions can be compared to. The ultimate standard of value is none other but the value of our own lives. If a person is able to recognize his importance not only to his physical survival, but to his well-being and happiness, that certain person can be said to have a very good and proper ethics in his life. One of the subset of ethics will be the next branches of philosophy known as Politics. Politics can be defined as the study of how men should interact in a proper society and what constitute proper in life, in other words, it is the study of Force which answer the question ‘What action are permissible’. Politics can be applied to every single person or a group of people. A society is set up by Politics as politics tell how a person should act or behave within a certain society. Politics is very important in a society and even a country itself, this is because a political system in a society or country will greatly affect the individuals within that specific area. The people within that system are allowed to function or act according to the nature of the politics that is applied there. If the system is unable to work out, it will either collapse such as the Communist Russia or it will cause rebel such as in Czarist Russia. The main goal of Politics must be the faculty of reason. This is because reason is the main means of survival for a man as ones cannot survive in an ineffective environment. In a moral political system, coercion must be banned because reason does not function under it as man cannot be forced to think about what is right or wrong. Society cannot be forced to think, but, government plays an important role here as governments can objective laws and also monopoly retaliatory force to prevent one person from doing illegal things that might harm the society. The last branch of philosophy is also known as the study of arts and the sense of life which is called Esthetics. Esthetics also studies the methods of evaluating arts and also the judgment of arts itself. This branch of philosophy depends on the previous branches of philosophy which is Metaphysics, Epistemology, and ethics. It is important to study art because art existed through all of recorded human history. Human’s unique ways of thinking and evaluating makes art unique as well. A person ability to abstract the concept of art can determined the standard of one’s life as well as satisfying his personal intellectual needs. This is why Esthetics is very important as it delves into the reason why does art existed. The main key element of a proper Esthetics is none other than a person’s value judgment of the creator. With the field of ethics, these value judgments can be evaluated as well as observed because art is a selective recreation of reality.