The Life Of Mahatma Ghandi Essay Example For Students

The Life Of Mahatma Ghandi Essay Mahatma Gandhi IntroductionMohandas Karamchand Gandhi, the preeminent leader of Indian nationalism and the prophet of nonviolence in the 20th century, was born, the youngest child of his fathers fourth wife, on Oct. 2, 1869, at Porbandar, the capital of a small principality in Gujarat in western India under British suzerainty. His father, Karamchand Gandhi, who was the dewan (chief minister) of Porbandar, did not have much in the way of a formal education but was an able administrator who knew how to steer his way between the capricious princes, their long-suffering subjects, and the headstrong British political officers in power. Gandhis mother, Putlibai, was completely absorbed in religion, did not care much for finery and jewelry, divided her time between her home and the temple, fasted frequently, and wore herself out in days and nights of nursing whenever there was sickness in the family. Mohandas grew up in a home steeped in Vaishnavism (Vaisnavism)worship of the Hindu god Vish nu (Visnu)with a strong tinge of Jainism, a morally rigorous Indian religion, whose chief tenets are nonviolence and the belief that everything in the universe is eternal. Thus he took for granted ahimsa (noninjury to all living beings), vegetarianism, fasting for self-purification, and mutual tolerance between adherents of various creeds and sects. (see also Index: ahimsa, or ahimsa) Youth. We will write a custom essay on The Life Of Mahatma Ghandi specifically for you for only $16.38 $13.9/page Order now The educational facilities at Porbandar were rudimentary; in the primary school that Mohandas attended, the children wrote the alphabet in the dust with their fingers. Luckily for him, his father became dewan of Rajkot, another princely state. Though he occasionally won prizes and scholarships at the local schools, his record was on the whole mediocre. One of the terminal reports rated him as good at English, fair in Arithmetic and weak in Geography; conduct very good, bad handwriting. A diffident child, he was married at the age of 13 and thus lost a year at school. He shone neither in the classroom nor on the playing field. He loved to go out on long solitary walks when he was not nursing his by now ailing father or helping his mother with her household chores. He had learned, in his words, to carry out the orders of the elders, not to scan them. With such extreme passivity, it is not surprising that he should have gone through a phase of adolescent rebellion, marked by secret athe ism, petty thefts, furtive smoking, andmost shocking of all for a boy born in a Vaishnava familymeat eating. His adolescence was probably no stormier than that of most children of his age and class. What was extraordinary was the way his youthful transgressions ended. Never again was his promise to himself after each escapade. And he kept his promise. Beneath an unprepossessing exterior, he concealed a burning passion for self-improvement that led him to take even the heroes of Hindu mythology, such as Prahlada and Harishcandralegendary embodiments of truthfulness and sacrificeas living models. In 1887 Mohandas scraped through the matriculation examination of the University of Bombay and joined Samaldas College in Bhavnagar (Bhaunagar). As he had suddenly to switch from his native languageGujaratito English, he found it rather difficult to follow the lectures. Meanwhile, his family was debating his future. Left to himself, he would have liked to be a doctor. But, besides the Vaishna va prejudice against vivisection, it was clear that, if he was to keep up the family tradition of holding high office in one of the states in Gujarat, he would have to qualify as a barrister. This meant a visit to England, and Mohandas, who was not too happy at Samaldas College, jumped at the proposal. His youthful imagination conceived England as a land of philosophers and poets, the very centre of civilization. But there were several hurdles to be crossed before the visit to England could be realized. His father had left little property; moreover, his mother was reluctant to expose her youngest child to unknown temptations and dangers in a distant land. But Mohandas was determined to visit England. One of his brothers raised the necessary money, and his mothers doubts were allayed when he took a vow that, while away from home, he would not touch wine, women, or meat. Mohandas disregarded the last obstaclethe decree of the leaders of the Modh Bania subcaste (Vaisya caste), to which the Gandhis belonged, who forbade his trip to England as a violation of the Hindu religionand sailed in September 1888. Ten days after his arrival, he joined the Inner Temple, one of the four London law colleges. (see also Index: Inns of Court) England. Gandhi took his studies seriously and tried to brush up on his English and Latin by taking the London University matriculation examination. But, during the three years he spent in England, his main preoccupation was with personal and moral issues rather than with academic ambitions. The transition from the half-rural atmosphere of Rajkot to the cosmopolitan life of London was not easy for him. As he struggled painfully to adapt himself to Western food, dress, and etiquette, he felt awkward. His vegetarianism became a continual source of embarrassment to him; his friends warned him that it would wreck his studies as well as his health. Fortunately for him he came across a vegetarian restaurant as well as a book providing a reasoned defense of vegetarianism, which henceforth became a matter of conviction for him, not merely a legacy of his Vaishnava background. The missionary zeal he developed for vegetarianism helped to draw the pitifully shy youth out of his shell and gave him a new poise. He became a member of the executive committee of the London Vegetarian Society, attending its conferences and contributing articles to its journal. In the vegetarian restaurants and boarding houses of England, Gandhi met not only food faddists but some earnest men and women to whom he owed his introduction to the Bible and the Bhagavadgita, the most popular expression of Hinduism in the form of a philosophical poem, which he read for the first time in its English translation by Sir Edwin Arnold. The English vegetarians were a motley crowd. They included socialists and humanitarians like Edward Carpenter, the British Thoreau; Fabians like George Bernard Shaw; and Theosophists like Annie Besant. Most of them were idealists; quite a few were rebels who rejected the prevailing values of the late Victorian Establishment, denounced the evils of the capitalist and industrial society, preached the cult of the simple life, and stressed the superiority of moral over material values and of cooperation over conflict. These ideas were to contribute substantially to the shaping of Gandhis personality and, eventually, to his politics. Painful surprises were in store for Gandhi when he returned to India in July 1891. His mother had died in his absence, and he discovered to his dismay that the barristers degree was not a guarantee of a lucrative career. The legal profession was already beginning to be overcrowded, and Gandhi was much too diffident to elbow his way into it. In the very first brief he argued in a Bombay court, he cut a sorry figure. Turned down even for the part-time job of a teacher in a Bombay high school, he returned to Rajkot to make a modest living by drafting petitions for litigants. Even this employment was closed to him when he incurred the displeasure of a local British officer. It was, therefore, with some relief that he accepted the none-too- attractive offer of a years contract from an Indian firm in Natal, South Africa. South Africa. .ua93c714870ae5f0cb164e18a1ffede6c , .ua93c714870ae5f0cb164e18a1ffede6c .postImageUrl , .ua93c714870ae5f0cb164e18a1ffede6c .centered-text-area { min-height: 80px; position: relative; } .ua93c714870ae5f0cb164e18a1ffede6c , .ua93c714870ae5f0cb164e18a1ffede6c:hover , .ua93c714870ae5f0cb164e18a1ffede6c:visited , .ua93c714870ae5f0cb164e18a1ffede6c:active { border:0!important; } .ua93c714870ae5f0cb164e18a1ffede6c .clearfix:after { content: ""; display: table; clear: both; } .ua93c714870ae5f0cb164e18a1ffede6c { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .ua93c714870ae5f0cb164e18a1ffede6c:active , .ua93c714870ae5f0cb164e18a1ffede6c:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .ua93c714870ae5f0cb164e18a1ffede6c .centered-text-area { width: 100%; position: relative ; } .ua93c714870ae5f0cb164e18a1ffede6c .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .ua93c714870ae5f0cb164e18a1ffede6c .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .ua93c714870ae5f0cb164e18a1ffede6c .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .ua93c714870ae5f0cb164e18a1ffede6c:hover .ctaButton { background-color: #34495E!important; } .ua93c714870ae5f0cb164e18a1ffede6c .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .ua93c714870ae5f0cb164e18a1ffede6c .ua93c714870ae5f0cb164e18a1ffede6c-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .ua93c714870ae5f0cb164e18a1ffede6c:after { content: ""; display: block; clear: both; } READ: Thanksgiving EssayAfrica was to present to Gandhi challenges and opportunities that he could hardly have conceived. In a Durban court, he was asked by the European magistrate to take off his turban; he refused and left the courtroom. A few days later, while travelling to Pretoria, he was unceremoniously thrown out of a first-class railway compartment and left shivering and brooding at Pietermaritzburg Station; in the further course of the journey he was beaten up by the white driver of a stagecoach because he would not travel on the footboard to make room for a European passenger; and finally he was barred from hotels reserved for Europeans only. These humiliations were th e daily lot of Indian traders and labourers in Natal who had learned to pocket them with the same resignation with which they pocketed their meagre earnings. What was new was not Gandhis experience but his reaction. He had so far not been conspicuous for self-assertion or aggressiveness. But something happened to him as he smarted under the insults heaped upon him. In retrospect the journey from Durban to Pretoria struck him as one of the most creative experiences of his life; it was his moment of truth. Henceforth he would not accept injustice as part of the natural or unnatural order in South Africa; he would defend his dignity as an Indian and as a man. (see also Index: racial segregation ) While in Pretoria, Gandhi studied the conditions in which his countrymen lived and tried to educate them on their rights and duties, but he had no intention of staying on in South Africa. Indeed, in June 1894, as his years contract drew to a close, he was back in Durban, ready to sail for Indi a. At a farewell party given in his honour he happened to glance through the Natal Mercury and learned that the Natal Legislative Assembly was considering a bill to deprive Indians of the right to vote. This is the first nail in our coffin, Gandhi told his hosts. They professed their inability to oppose the bill, and indeed their ignorance of the politics of the colony, and begged him to take up the fight on their behalf. Until the age of 18, Gandhi had hardly ever read a newspaper. Neither as a student in England nor as a budding barrister in India had he evinced much interest in politics. Indeed, he was overcome by a terrifying stage fright whenever he stood up to read a speech at a social gathering or to defend a client in court. Nevertheless, in July 1894, when he was barely 25, he blossomed almost overnight into a proficient political campaigner. He drafted petitions to the Natal legislature and the British government and had them signed by hundreds of his compatriots. He could not prevent the passage of the bill but succeeded in drawing the attention of the public and the press in Natal, India, and England to the Natal Indians grievances. He was persuaded to settle down in Durban to practice law and to organize the Indian community. In 1894, he founded the Natal Indian Congress of which he himself became the indefatigable secretary. Through this common political organization, he infused a spirit of solidarity in the heterogeneous Indian community. He flooded the government, the legislature, and the press with closely reasoned statements of Indian grievances. Finally, he exposed to the view of the outside world the skeleton in the imperial cupboard, the discrimination practiced against the Indian subjects of Queen Victoria in one of her own colonies in Africa. It was a measure of his success as a publicist that such important newspapers as The Times of London and the Statesman and Englishman of Calcutta editorially commented on the Natal Indians grievance s. In 1896 Gandhi went to India to fetch his wife Kasturbai and their children and to canvass support for the Indians overseas. He met prominent leaders and persuaded them to address public meetings in the countrys principal cities. Unfortunately for him, garbled versions of his activities and utterances reached Natal and inflamed its European population. On landing at Durban in January 1897, he was assaulted and nearly lynched by a white mob. Joseph Chamberlain, the colonial secretary in the British Cabinet, cabled the government of Natal to bring the guilty men to book, but Gandhi refused to prosecute his assailants. It was, he said, a principle with him not to seek redress of a personal wrong in a court of law. Resistance and results. Gandhi was not the man to nurse a grudge. On the outbreak of the South African (Boer) War in 1899, he argued that the Indians, who claimed the full rights of citizenship in the British crown colony of Natal, were in duty bound to defend it. He raised an ambulance corps of 1,100 volunteers, out of whom 300 were free Indians and the rest indentured labourers. It was a motley crowd: barristers and accountants, artisans and labourers. It was Gandhis task to instill in them a spirit of service to those whom they regarded as their oppressors. The editor of the Pretoria News has left a fascinating pen portrait of Gandhi in the battle zone: After a nights work which had shattered men with much bigger frames, I came across Gandhi in the early morning sitting by the roadside eating a regulation army biscuit. Every man in (General) Bullers force was dull and depressed, and damnation was heartily invoked on everything. But Gandhi was stoical in his bearing, cheerful and confident in his conversa tion and had a kindly eye. The British victory in the war brought little relief to the Indians in South Africa. The new regime in South Africa was to blossom into a partnership, but only between Boers and Britons. Gandhi saw that, with the exception of a few Christian missionaries and youthful idealists, he had been unable to make a perceptible impression upon the South African Europeans. In 1906 the Transvaal government published a particularly humiliating ordinance for the registration of its Indian population. The Indians held a mass protest meeting at Johannesburg in September 1906 and, under Gandhis leadership, took a pledge to defy the ordinance if it became law in the teeth of their opposition, and to suffer all the penalties resulting from their defiance. Thus was born satyagraha (devotion to truth), a new technique for redressing wrongs through inviting, rather than inflicting, suffering, for resisting the adversary without rancour and fighting him without violence. (see al so Index: civil disobedience) The struggle in South Africa lasted for more than seven years. It had its ups and downs, but under Gandhis leadership, the small Indian minority kept up its resistance against heavy odds. Hundreds of Indians chose to sacrifice their livelihood and liberty rather than submit to laws repugnant to their conscience and self-respect. In the final phase of the movement in 1913, hundreds of Indians, including women, went to jail, and thousands of Indian workers who had struck work in the mines bravely faced imprisonment, flogging, and even shooting. It was a terrible ordeal for the Indians, but it was also the worst possible advertisement for the South African government, which, under pressure from the governments of Britain and India, accepted a compromise negotiated by Gandhi on the one hand and the South African statesman General Jan Christian Smuts on the other. The saint has left our shores, Smuts wrote to a friend on Gandhis departure from South Africa f or India, in July 1914, I hope for ever. Twenty-five years later, he wrote that it had been his fate to be the antagonist of a man for whom even then I had the highest respect. Once, during his not infrequent stays in jail, Gandhi had prepared a pair of sandals for Smuts, who recalled that there was no hatred and personal ill-feeling between them, and when the fight was over there was the atmosphere in which a decent peace could be concluded. As later events were to show, Gandhis work did not provide an enduring solution for the Indian problem in South Africa. What he did to South Africa was indeed less important than what South Africa did to him. It had not treated him kindly, but, by drawing him into the vortex of its racial problem, it had provided him with the ideal setting in which his peculiar talents could unfold themselves. The religious quest. .u0ea6cc8c36c13f03bbb421b51a5cf41b , .u0ea6cc8c36c13f03bbb421b51a5cf41b .postImageUrl , .u0ea6cc8c36c13f03bbb421b51a5cf41b .centered-text-area { min-height: 80px; position: relative; } .u0ea6cc8c36c13f03bbb421b51a5cf41b , .u0ea6cc8c36c13f03bbb421b51a5cf41b:hover , .u0ea6cc8c36c13f03bbb421b51a5cf41b:visited , .u0ea6cc8c36c13f03bbb421b51a5cf41b:active { border:0!important; } .u0ea6cc8c36c13f03bbb421b51a5cf41b .clearfix:after { content: ""; display: table; clear: both; } .u0ea6cc8c36c13f03bbb421b51a5cf41b { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u0ea6cc8c36c13f03bbb421b51a5cf41b:active , .u0ea6cc8c36c13f03bbb421b51a5cf41b:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u0ea6cc8c36c13f03bbb421b51a5cf41b .centered-text-area { width: 100%; position: relative ; } .u0ea6cc8c36c13f03bbb421b51a5cf41b .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u0ea6cc8c36c13f03bbb421b51a5cf41b .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u0ea6cc8c36c13f03bbb421b51a5cf41b .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u0ea6cc8c36c13f03bbb421b51a5cf41b:hover .ctaButton { background-color: #34495E!important; } .u0ea6cc8c36c13f03bbb421b51a5cf41b .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u0ea6cc8c36c13f03bbb421b51a5cf41b .u0ea6cc8c36c13f03bbb421b51a5cf41b-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u0ea6cc8c36c13f03bbb421b51a5cf41b:after { content: ""; display: block; clear: both; } READ: [pic] EssayGandhis religious quest dated back to his childhood, the influence of his mother and of his home at Porbandar and Rajkot, but it received a great impetus after his arrival in South Africa. His Quaker friends in Pretoria failed to convert him to Christianity, but they quickened his appetite for religious studies. He was fascinated by Tolstoys writings on Christianity, read the Quran in translation, and delved into Hindu scriptures and philosophy. The study of comparative religion, talks with scholars, and his own reading of theological works brought him to the conclusion that all religions were true and yet every one of them was imperfect because they were interp reted with poor intellects, sometimes with poor hearts, and more often misinterpreted. (see also Index: Quran) Rajchandra, a brilliant young philosopher who became Gandhis spiritual mentor, convinced him of the subtlety and profundity of Hinduism, the religion of his birth. And it was the Bhagavadgita, which Gandhi had first read in London, that became his spiritual dictionary and exercised probably the greatest single influence on his life. Two Sanskrit words in the Gita particularly fascinated him. One was aparigraha (nonpossession), which implied that man had to jettison the material goods that cramped the life of the spirit and to shake off the bonds of money and property. The other was samabhava (equability), which enjoined him to remain unruffled by pain or pleasure, victory or defeat, and to work without hope of success or fear of failure. These were not merely counsels of perfection. In the civil case that had brought him to South Africa in 1893, he had persuaded the antagon ists to settle their differences out of court. The true function of a lawyer seemed to him to unite parties riven asunder. He soon regarded his clients not as purchasers of his services but as friends; they consulted him not only on legal issues but on such matters as the best way of weaning a baby or balancing the family budget. When an associate protested that clients came even on Sundays, Gandhi replied: A man in distress cannot have Sunday rest. Gandhis legal earnings reached a peak figure of 5,000 a year, but he had little interest in moneymaking, and his savings were often sunk in his public activities. In Durban and later in Johannesburg, he kept an open table; his house was a virtual hostel for younger colleagues and political coworkers. This was something of an ordeal for his wife, without whose extraordinary patience, endurance, and self-effacement Gandhi could hardly have devoted himself to public causes. As he broke through the conventional bonds of family and property, their life tended to shade into a community life. Gandhi felt an irresistible attraction to a life of simplicity, manual labour, and austerity. In 1904, after reading John Ruskins Unto This Last, a critique of capitalism, he set up a farm at Phoenix near Durban where he and his friends could literally live by the sweat of their brow. Six years later another colony grew up under Gandhis fostering care near Johannesburg; it was named Tolstoy Farm after the Russian writer and moralist, whom Gandhi admired and corresponded with. Those two settlements were the precursors of the more famous ashrams (ashramas) in India, at Sabarmati near Ahmedabad (Ahmadabad) and at Sevagram near Wardha. South Africa had not only prompted Gandhi to evolve a novel technique for political action but also transformed him into a leader of men by freeing him from bonds that make cowards of most men. Persons in power, Gilbert Murray prophetically wrote about Gandhi in the Hibbert Journal in 1918, should be very careful how they deal with a man who cares nothing for sensual pleasure, nothing for riches, nothing for comfort or praise, or promotion, but is simply determined to do what he believes to be right. He is a dangerous and uncomfortable enemy, because his body which you can always conquer gives you so little purchase upon his soul. 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Monetary Union essays PE 116 Movement Education Kevin Juon Date 4-21-99 The word gymnastics came from the Greeks. The Greeks used this word to describe any type of physical activity. Exercise was an important part of their education process, sort of like what is in place today. They used exercise in order to beautify the body, promote health, comfort, strength, and vigor. The Romans took the Greeks beliefs on exercise, and used them in training their military forces. After the Romans, exercising virtually dropped off the face of the Earth until Johann Basedow (1723-1790) opened a school in 1774. Then once again, it became part of education. Today, hundreds of years after the Greeks, many people exercise for these same reasons they did. The Spartans also exercised, and one of the things they did were balancing activities. This was most likely important to the Spartans for different reasons, for example, it would help them during battle to be able to keep their balance. Schools today also use the balance beam even though it is not because they want the kids to be prepared for battle. The balance beam will help the kids acquire the balance needed in many activities they will perform as kids, Many types of gymnastics help balance, but there is no single activity that requires balance like the balance beam. The balance beam is able to be used for all different skill levels because the height of the beam can be adjusted. The teacher of a class is able to have the kids first try the exercise trying to stay on a piece of tape that was put on the floor. Then they could have the kids try it on a bleacher, it is a higher up, but is also wider than a regulation balance beam. Finally, once the kids get the hang of it, they can have them try the exercises on the balance beam. A direct result of the balance beam use, is the development and good use of the muscles in the feet ...

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Heat Transfer Within A Jacketed Reactor System Modeling of heat transfer within a jacketed reactor requires basic knowledge on process heat transfer; reactor design etc. literature review sum up the fundamental on energy balance, method of overall heat transfer coefficient determination and basic understanding of crystallization. These are the basic methods which allow engineers to predict more accurate capabilities during chemical process as well as timing on the process. Introduction Heat transfer is important in agitated vessels due to fluid temperature is the most significant factor for controlling the outcome of chemical, biochemical and pharmaceutical processes. [6] Jacketed agitated vessels for heating and cooling are commonly used in vary types of process applications. Engineers should have working knowledge of how heat transfer and temperature control principles applied to such vessels. Cooling or heating agitated liquid in vessels is a basic technological operation on the chemical, biochemical, pharmaceutical, food and processing industries. The cooling or heating rate depends on how the heat is supplied or removed, the mixing intensity and many other parameters. [5] The temperature needs to be controlled precisely at its desired to meet the requirement of downstream operations. Hence a mathematical model is essential which can predict temperatures accurately. The rate of heat transfer to or from an agitated liquid mass in a vessel is a function of the physical properties of that liquid and of the heating or cooling medium, the vessel geometry, and the degree of agitation. [8] Other factors which may affect the rate of heat transfer include type and size of the agitator and agitator location in the vessel. Most of the jacketed agitated vessels are used as reactor, thus chemical reactions with exothermic or endothermic effects must be taken into account as well. In a vessel containing an agitated liquid, heat transfer takes place mainly through conduction and forced convection, as it does in heat exchangers. [8] Crystallization is a unit operation for separation and production of pure solid materials with desired properties. To develop a batch cooling crystallization process, various operation strategies need to be investigated in relation to seeding, cooling, mixing, fines dissolution, and so forth. [18] In commercial scale process, the reactor size grows larger. In this situation, various problems like ancillary nucleation, attrition, breakage, agglomeration, and dead zone may become severer in relation to the increasing inhomogeneities in the solution temperature and hydrodynamics. Literature Review Modeling of reactors is useful for analyzing data, estimating performance, reactor scale-up, simulating start-up and shut down behavior, and control. [12] Uncertainties such as scale-up options, explosion hazards, runaway reactions, environmental emissions, reactor internals etc, may be explored through modeling. [12] A key aspect of modeling is to derive the appropriate momentum, mass or energy conservation equations for the reactor. One typical application in heat transfer with batch operation is heating the process fluid in reactor, maintaining temperature during the reaction period and cooling the product after reaction complete. [11] Energy Balance The overall thermal energy balance includes the heat entering the system, heat leaving the system, heat accumulation and heat loss. The equation can be written as: In batch process, there is no liquid or fluid entering or leaving the system. If the system is assumed to be perfectly insulated, the energy balance equation can be simplified in: [7] By integration of both sides: For a batch manufacturing process, heat transfer in an agitated vessel is used to design a suitable process or reaction. It is necessary to calculate the time to heat or cool a batch or the cooling capacity required to hold an exothermic or endothermic reaction at constant temperature. [1] The technique is to develop an expression which is relating time for heating or cooling agitated batches to coil or jacket area, heat-transfer coefficient, and the heat capacity of the vessel contents. [11] By rearranging the energy balancing equation, the relevant equation to calculate time is as follow: This equation only can be used in where the utility fluid temperature remains constant or the fluid temperature difference between inlet and outlet is not greater than 10% of the log mean temperature difference between the average temperature of the jacket and the temperature of the vessels content. [8] Precisely, for heating and cooling condition, this equation must be represented in separately: For heating: For cooling If the situation is greater than 10% of the log mean temperature difference, the apply equation will be: W = the mass flow rate through the jacket, C = the specific heat of the fluid in the jacket K = Assumptions are made for solving energy balance equation [11] [17] U is constant for the process and over the entire surface Liquid flow rates are constant Specific heats are constant for the process The heating or cooling medium has a constant inlet temperature Agitation produces a uniform batch fluid temperature No partial phase changes occurs Heat losses are negligible Agitated vessel heat transfer coefficient Process side heat transfer coefficient can be determined by speed and agitator type. For low viscosity fluids, high-speed turbine type agitators will provide good performance. For high viscosity fluids and non-newtonian fluids, larger diameter agitators will be more suitable. [1] Various types of agitators are used for mixing and blending as well as to promote heat transfer in vessels. The correlations used to estimate the heat transfer coefficient to the vessel wall. [2] For agitated vessels: Where hv = heat transfer coefficient to vessel wall or coil, Wm-2à ¢Ã¢â‚¬Å¾Ã†â€™-1 D = agitator diameter, m N = agitator, speed, rps (revolutions per second) Ï  = liquid density, kg/m3 kf = liquid thermal conductivity, Wm-1à ¢Ã¢â‚¬Å¾Ã†â€™-1 Cp = liquid specific heat capacity, J Kg-1à ¢Ã¢â‚¬Å¾Ã†â€™-1 ÃŽ ¼ = liquid viscosity, Nm-2s. The values of constant C and the indices a, b and c depend on the type of agitator the use of baffles, and whether the transfer is to the vessel wall or to coils. Some typical correlations are given below: [2] Flat blade disc turbine, baffled or unbaffled vessel, transfer to vessel wall, Re < 400: Flat blade disc turbine, baffled vessel, transfer to vessel wall, Re> 400: Overall heat transfer coefficient Most utility and process fluid will foul the heat transfer surfaces in an exchanger to a greater or lesser extent. The deposited material will normally have a relatively low thermal conductivity and will reduce the overall coefficient. Fouling factors usually are considered in determining the Overall heat transfer coefficient U. The overall heat transfer coefficient is calculated in this way: Where ÃŽ ± and ÃŽ ±s are the heat transfer coefficients for the process and utility side respectively. On the utility side, fouling resistance 1/ÃŽ ±f can be found from local experience or from Kern (1950). [1] Heat transfer utility fluid Syltherm 800 is a silicone heat transfer fluid. It is a highly stable, long-lasting silicone fluid designed for high temperature liquid phase operation. It exhibits low potential for fouling and can often remain in service for 10 years or more. The recommended using temperature range is. [15] Crystallization Crystallization occurs with generating a sufficient level of supersaturation. The method of generation of supersaturation is to provide heat transfer, which is used in cooling and evaporative crystallization processes. There are two essential steps for crystallization: nucleation and crystal growth. The problems of scale-up in crystallization process can be classified into induced, hydrodynamically induced, and mixes. For example, attrition, breakage, and agglomeration are related to solution mixing and are investigated from the hydrodynamic point of view. On the other hand, ancillary nucleation is caused by increased temperature gradient within the solution together with seed particles generated by attrition or fluid shear and can be considered as an example where the thermal and hydrodynamic effects are mixed. To improve the hydrodynamics deterioration during the scale-up, impeller type, agitation power, and baffle or draft tube design2,8,9 can be modified or newly designed as required. The thermal aspect improvement is performed by the heat transfer enhancement, but the remedies are limited because the heat transfer area to volume ratio decreases inevitably during the scale-up unless other techniques such as vacuum or evaporative crystallization is introduced. Methodology Calculation of time to heat or cool a fixed amount of liquid inside a batch reactor usually assume the process and utility heat capacity and the overall heat transfer coefficient to be constant throughout the calculations. Equations (liquid in jacket) heat input to reactor at T = heat loss by utility liquid with inlet temperature T1 and outlet temperature T2 Rearrange the equation to solve unknown jacket outlet temperature T2 The rate of temperature change of the liquid inside the vessel is given by Solving the above two equations to get process temperature as a function of time Finally, solving for time t where T = Tf Conclusion

Commerce Study Notes Year 9

Commerce Law and Society Laws: * A rule that governs the way you live, with minimal standards. * Protects people and keeps peace. * Have freedoms, resolve disputes, protection. Anarchy: Without order. Mediation: a third person that ultimately decides, outside of court * * Registered person. * Two parties and mediator. * A compromise is made. * Mediations cheaper and voluntary. Matrimonial: property of marriage, everything is shared * * Matrimonial assets. * Court considers contributions of parties. * Child is child of marriage Government in Australia Governments make laws to control us. They set up systems to enforce laws. * Governments set up courts to decide upon breaches of laws. Jury decides whether the person is guilty or not, the judge decides the punishment Democracy: Demo=People, Cracy=State * People elected by the people under a free voting system. All have equal rights. * Provides laws and order, controls economic problems, and protects people / environment. Types of Govern ments * Communism: No private ownership. Government owns everything and provides the needs/ wants of the people. E. G. China, North Korea. Monarchy: The Monarch (king, queen, emperor, empress, sultan) E. G. Kuwait, Saudi Arabia. * Constitutional Monarchy: Powers of the monarch reduced by laws. Governor General represents the Monarch. E. G. Australia operates as a democracy. * Anarchy: Government has broken down. No laws or authority. * Socialism: Ownership of all production (farms and factories) controlled by the people. Government puts responsibility on people. E. G. Sweden * Federation: Involves Federal, State and local governments. Federal Government Issues * Customs * Currency * Defence Immigration/ emigration. * Aboriginal affairs. * Foreign affairs * Social security (makes people feel more secure) * Marriage/ divorce. The Australian Federal government is based on a bicameral system. * * Upper house – Senate76 people * Lower house – house of Reps 150 people State Government * * Each state divided into electorates * 93 electorates in NSW for lower house (legislative assembly- green room). * 43 electorates for upper house. * Voters elect a representative. * Each electorate contains 40,000 to 50,000 people.Jurisdiction * Each state in USA and Aus have legal jurisdiction. (authority in law) * Unity and centrality- POWER * Freedom of speech, same rights (equality), justice. 3 Areas of Power Legislation – parliamentary law – voting politician Executive – carries out law – police Judiciary – courts and judges – statue and case law Judiciary 1st level: Local Court (judge and magistrate) minor matters e. g. shop lifting 2nd District Court (judge)fairly serious matters e. g. armed robbery 3rd level: Supreme Court (Judge/ justices) serious criminal matters e. g. ife in-jailment 4th High Court (Judge) looks at paperwork, no evidence Federal Courts – deal with federal law * Federal magistrates court of Aus tralia * Federal court of Australia e. g. Family Courts Facts * Australian constitution sets out Federal powers. * Federal law prevails over state law. * Trade practices act: Federal * Bankruptcy Hierarchy of Courts in Australia – state courts * High court of Australia (up to 7 judges) * Federal court * Supreme court of appeal * Supreme court * District court * Local court Court Administration 1. Registry: Handles the paperwork of the court.Charges fees. 2. Registrar: Boss of the registry. What impact do fees have on justice? Fees restrict people’s access to the courts causing injustice and can be seen as discrimination. It also reduces the demand on the court system. It also deters frivolous or silly cases. Contracts * A contract is a legally enforceable agreement between parties, outlining the obligations. * Oral/ verbal contract: mouth (spoken). * Signed contract: written (signed by parties). * Most contracts are oral but are signed when involving large sums of mone y. Elements of a contract . Offer: A proposal where the person making an offer must clearly communicate. 2. Acceptance: Occurs when the person making an offer agrees to the proposal. 3. Consideration: Required to form a valid contract. Requires each party to give up something of value. * Implied term: nothing in writing but a code of conduct is established. Cases * PS of Great Britain v BBC Ltd (1953): Customers offer can be refused. (the check out accepts offers) * C v CSB Co. (1893): Misleading advertising can be a contract. (offer at large) * Chappel & Co. V Nestle Co.Ltd (1960): Even with no value something can be passed from one party to another forming a contract. (caveat emptor – buyer beware) The difference between Private law and Public law Private law (civil): laws that regulate people’s behaviour with other individuals. (non-criminal matters e. g. suing for civil wrongs) Public law (criminal): People’s behaviour within society. (criminal law, protects people from other people – e. g. robbery, homicide , drug offences) Courts * Juries are normally involved in serious matters. * For minor matters you only have a local court magistrate.The adversail system: two sides go against each other in an argument or a fight to argue their case. List the main courtroom officials * The judge (your worship) * The judge assistant * The lawyers * The transcript reporter * The jury (6-12 in criminal case) * The barrister * The magistrate (your honour) Robbery: taking property that belongs to someone else using threats/ violence. Civil law Civil law deals with no criminal matters. It allows an individual to sue other people Negligence Trespassing Defamation Nuisance Where a civil law is successfully proven in court, the wronged party will seek damages.The award of legal costs normally goes to the successful party that is either the plaintiff or defendant (but can be refused as these costs are discretionary – up to judge) Civil Law Tes t To prove their test they must win â€Å"the balance of probability† more likely/ no certainty of truth. Criminal Law Test â€Å"Beyond a reasonable doubt† approx. Equal to certainty (protects people from others who do the wrong thing). â€Å"Ignorance of the law is no excuse†. In criminal law you have a Prosecutor: In local courts usually police whereas in the higher courts prosecute is known as the Crown prosecutor. the Crown (R= Regina which means loyalty) v.Defendant In criminal matters the injured party is the State or the Crown. The offence is not against the person that has suffered at the hands of the alleged perpetrator but rather against the State (Crown). In criminal matters the victim cannot decide to punish the offender. This is for the Crown to make. Courtroom acts and definitions Indictable offences: Serious crimes that are determined or tried by a judge or jury. Summary offences: Less serious crimes which are relatively quickly dealt with by a m agistrate in a local court. Manresa: To have a guilty mind. If you are insane you cannot have mensrea.Quasi: Semi criminal. In between civil and criminal. Injunction: Order of the court to stop doing something. E. g. Stop playing loud music. Contempt of Court: Disregarding or breathing an injunction or court order. Statute Law: Law made by parliament. Restitution: paying for damage caused by contempt of court Case/ common law: Law made by judges. How laws are made Statute Law: made by parliament through the passing of a bill or a referendum. Common/ case law: Law is made by the courts of previous cases. 2 houses of parliament (legislative) 1st Lower house (house of reps) 2nd Upper house (senate)If a bill is continuously rejected than a double dissolution can be called meaning the public go to the polls to re-elect senators and representatives in the lower house. A courts primary role is to interpret and apply the laws of the parliament. Common law: A judge can alter common law as it has arisen through the judges in England and then Australia. Alters law when necessary to allow justice. What binds the Common Law Precedent in law means those principles that have been decided in the past that a court can rely on today. Higher courts make a precedent. How a bill becomes law The cabinet draft bills with senior ministers. cabinet is the prime minister) Bill is given to each member of parliament, then it gets read out loud for debate and voted in House of Reps. If majority in favour bill is passed to senate. If passed in senate it goes to executive (governor general) for Royal assent (Is now an ACT of Parliament). If senate rejects bill they send it back as is or with amendments. If rejected for a second time a double dissolution can be called. Common law Develops over time case by case. Each case represents a precedent. Precedent A strong example, defies what has happened before through principles of law. Judges RoleInterpret statute, common law, delegated legislati on (ministerial law), and to enforce laws. Equality: Enforcement of the law should be fair and should result in equal punishments or penalties. A judge cannot lean on the scale (meant to be impartial). Our system is adversarial system (each party represented by a lawyer). Justice: All people are equal before the law. Symbols of justice The blindfold: Justice is impartial (not influenced by wealth, race, sex, ect†¦ ). The scales: Represent the legal system (weighing up both sides of argument). The sword: The punishment to be imposed on any guilty party.