Wednesday, November 27, 2019
Women Rights essays
Women Rights essays Women rights have gained greater attention with feminist activities and call for liberation of women. The consistent and gradual erosion of patriarchic system is the only way true liberation can be attained. The efforts made for women rights have been impressive but the progress in this connection is still marred by serious issues and ugly incidents. In the Middle East, women are still suffering grave gender discrimination on regular basis. Violence against women is a common problem and though it is also a big issue in the West, in the Middle East it doesnt get any attention, which makes it pervasive. Lack of education can be cited as one of the main reasons why violence continues to exist in this society. We can argue that had lack of education been the only problem, then women in the west would have never suffered abuse. But the real issue at hand is endurance or tolerance of abuse. In the Middle Eastern societies, women continue to endure violence silently seldom raising voice if ever. On the other hand, women in the West have been consistently making efforts to highlight the issue and seek appropriate resolution of the problem. Lack of education however has not been addressed aptly in the Middle East. Women are not allowed to drive in some countries including Saudi Arabia; they are not allowed to vote even though they have access to all modern amenities including Internet, television and cable TV. Education or lack of it thereof is purposely being used as a weapon of oppression and suppression. In every corner of the world, it has been noticed that when a certain section had to be oppressed, it was denied its right to quality education. Education is seen as the catalyst for change and this weapon is not offered to women in the Middle East. How are lack of education and violence connected? This question comes to the mind when we read this article and the related theories. Violence is always a sign of oppression against th...
Saturday, November 23, 2019
Chalicotherium Facts and Figures
Chalicotherium Facts and Figures Name: Chalicotherium (Greek for pebble beast); pronounced CHA-lih-co-THEE-ree-um Habitat: Plains of Eurasia Historical Epoch: Middle-Late Miocene (15-5 million years ago) Size and Weight: About nine feet high at the shoulder and one ton Diet: Plants Distinguishing Characteristics: Horse-like snout; clawed feet; longer front than hind legs About Chalicotherium Chalicotherium is a classic example of the bizarre megafauna of the Miocene epoch, about 15 million years ago: this gigantic mammal is virtually unclassifiable, having left no direct living descendants. We do know that Chalicotherium was a perissodactyl (that is, a browsing mammal possessing an odd number of toes on its feet), which would make it a distant relative of modern horses and tapirs, but it looked (and probably behaved) like no plus-sized mammal alive today. The most notable thing about Chalicotherium was its posture: its front legs were significantly longer than its hind legs, and some paleontologists believe that it brushed the knuckles of its front hands along the ground when it walked on all fours, a bit like a modern gorilla. Unlike todays perissodactyls, Chalicotherium had claws instead of hooves, which it probably used to rope in vegetation from tall trees (a bit like another prehistoric mammal it vaguely resembled, the giant sloth Megalonyx, which lived a few million years later). Another odd thing about Chalicotherium is its name, Greek for pebble beast. Why would a mammal that weighed at least a ton be named after a pebble, rather than a boulder? Simple: the chalico part of its moniker refers to this beasts pebble-like molars, which it used to grind down the soft vegetation of its Eurasian habitat. (Since Chalicotherium shed its front teeth during adulthood, leaving it bereft of incisors and canines, this megafauna mammal was clearly unsuited to eating anything except fruits and tender leaves.) Did Chalicotherium have any natural predators? Thats a tough question to answer; clearly, a full-grown adult would have virtually impossible for a single mammal to kill and eat, but sick, aged and juvenile individuals may have been preyed on by contemporary bear dogs like Amphicyon, especially if this distant canine ancestor had the ability to hunt in packs!
Thursday, November 21, 2019
Tom, Doris, Noel and John Essay Example | Topics and Well Written Essays - 1000 words
Tom, Doris, Noel and John - Essay Example A child is not competent to give sworn evidence, but capable of giving evidence that is unsworn, if the court has a satisfaction that the child knows the difference between truth and lies, the court briefs the child on the importance of telling the truth, the child responded appropriately that he/ she will not tell lies in the proceedings. It also dictates that this process should be done through asking straightforward questions in things such as their age, name schooling and favorable past times among others. Therefore, if all these turn positive then the court can call the child as a witness2. In reference to the above mentioned procedures, the court in this case may call tom in as a witness if he passes the competence test a responded positively to question of giving the truth. However, the court cannot call Tom as a witness if he does not show positivity to the mentioned procedures. Hear say witness A witness is who has seen, has a claim, of by someone in authority thinks of a pe rson, to have knowledge that the court might find relevant to a case. The information given may either be willingly or under compulsion. A hear say witness is one who testifies on account of what someone else says3. There are many limitations in most court proceedings on whether the information given by a hearsay witness is admissible. There are a number of governing principles towards admissibility of a hearsay witness. This depends on the part that delivered the information to the hearsay witness. If the eye witness cannot clearly recall the happening at the crime scene, and had mentioned them to another person immediately after the occurrence, and the other party can clearly recall what was mentioned then a hearsay witness can facilitate the case4. In reference to the case, Tomââ¬â¢s mother can testify if tom is unable to give the correct chronology of occurrences. This is possible because tom is a child and can easily forget what he had seen, though he was present at the crim e scene. However, if Tom will be capable of giving the correct information, then his mother will not be required to give her testimony based on what her son told her. Compelling a witness After a law suit is filed, a witness that refuses to appear before the court can be forced to come. This is known as compelling. The person has to the first object to the request of appearing before the court. If this happens, the judge writes a subpoena to the witness. This happens in cases that the testimony of the victim is highly crucial. If there is an order compelling someone to court, and he or she defies it, the court has the power to appropriately assign punishment to the person. One of the most thing that the court does is making the side the side of the witness lose the case. In reference to law, the court has the authority to summon Anna. Failure to adhere to the subpoena, Anna will receive the lawful assigned punishment. Most probably, she will have to risk her husband going to jail be cause she is the only one able to justify his claims about his location referring to the accusation time5. Expert evidence The law provides for the intervention of expert analysis. Experts and those instructing them must have regards, to guidance provisions in the protocols for instructions of experts in giving evidence. First, the expert assists the court in creating objectives and unbiased opinions and must not assume the role of the advocate. Experts must consider all materials facts including those which might be
Tuesday, November 19, 2019
Theories of International Relations Essay Example | Topics and Well Written Essays - 2250 words
Theories of International Relations - Essay Example 42). As a result of the complexity in international relations, this field of study has attracted numerous scholars who come up with theories to explain international behavior among states. For most theorists of international relations the state is the primary player that determines the direction in international matters. Olson and Groom (1992, pp. 274) state that the policies adopted by a certain state go along way into shaping its relationship with other states, thus molding international relations. The field of international relations widely accepts anarchy as one of the possible explanations for behavior in international politics. Different theorists of international relations have varying concepts on the issue of anarchy. To some pessimists, anarchy is totally appalling, while to some optimists, anarchy can be advantageous to a state. More specifically, there is a ââ¬Å"mythâ⬠of international anarchy that provides that ââ¬ËAnarchy is what states make of itââ¬â¢. Acco rding to Weber (2004, pp. 63) this myth of international relations holds that the outcomes of global anarchy vary from one state to another. This means that one cannot predict how anarchy will affect a given state, since different states have different responses to anarchy. Essentially, anarchy may cause either cooperation or conflicts among states, depending on the policies of each individual state on international behavior (Griffith, 1999; pp. 154). Accordingly, it is critical to have deeper insight into the concept of international anarchy; its meaning, origins, the role it plays in international relations. It essential to consider how individual states have it in their power to shape international relations by choosing the consequences that anarchy is going to have on them and other states they interact with. For most people, especially those not concerned with the study of international relations, the term anarchy is associated with disorganization, violence, and absence of law s to govern the actions of people. This means that most people view anarchy as being characterized by severe social and political instability, meaning that anarchy is a threat to international order and security (Griffiths, 1999; pp. 145). With such a mindset, anarchy is depicted as the very opposite of civilization and most people would rather do without anarchy. However, in the study of international relations, different scholars have different views concerning international anarchy and its consequences on international politics. Some see anarchy as negative, while others see it a positive. Yet for some, international anarchy can have either negative or positive effects or both on a state and in the entire field of international politics. Nevertheless, all theorists of international anarchy agree that anarchy is caused by lack of a universal government. In the field of international relations, anarchy is not necessarily considered a theory; rather it is taken as a myth by theorist s of international relations. Theorists of international anarchy hold that the world is made of sovereign states, each yielding power over its territory, people, and resources. According to Brown (2002, pp. 145,) such a sovereign state holds the ultimate power over its area of jurisdiction and no other authority, whether domestic or international, should challenge its position. Therefore, as far as international politics of anarchy are concerned, all states are sovereign, but the degrees of sovereignty vary from state to state. International independence among states varies, according to the political structures of
Sunday, November 17, 2019
Descriptive Essay Example for Free
Descriptive Essay What do I do with my leisure time? Well thatââ¬â¢s a funny question, because I donââ¬â¢t have much of it. When I get some extra time I enjoy flying with my good friend Sam. Since Sam is teaching me how to fly, Iââ¬â¢ll be able to share all the wonderful and majestic views with you. Thereââ¬â¢s nothing like a little adrenaline rush at the end of the day. Before we get in the plane, we walk around it, check the oil, the tire pressure and climb up on the wing and open the gas cap on both wings to make sure there is enough fuel. We check the gauges to make sure they work; they always do but thatââ¬â¢s all part of inspecting the plane. Once we are done with our preflight inspections we untie the plane and remove the chucks from under the tires. Then we get into the small cockpit. Then we adjust our green leather seats to the proper place, where the seat is comfortable for each one of us; since we do want to be comfortable when flying. The first thing that we do is grab the yoke(the steering wheel) and turn it left and right, and forward and back, to make sure the flight controls are free and correct. When all of that is complete we are ready to turn on the power. Sam turns on the master switch and all the electronics and avionics come on with a beeping or ringing noise. The dashboard looks like a Christmas tree all lit up. Next the key goes in the ignition. Thatââ¬â¢s when I have to turn the key past the right and left magneto position to start the propeller. Then the propeller goes around a couple of times, which sounds like an oversized fan being turned on, and the plane has been started. He then adjusts his gauges and we put on our head phones. As I put on my headphones I can hear other people talking on the radio. We then tune into the common traffic advisory frequency and we taxi for take-off. In order to take off properly, you have to take off into the wind; so we watch the flag to see which way the wind is blowing. That helps you to determine which runway to use and the direction we will be heading. Then we head to the runway for take-off. Once we are lined up with the proper runway he gives me the nod to let me know we are getting ready for take-off. I let him know that we are ready to go by giving him thumbs up for good luck and a great big cheesy smile. Then he gives the plane full throttle; thatââ¬â¢s when the sound of the plane is at full blast. Thatââ¬â¢s when the fun starts. When our airspeed is around sixty MPH he pulls back on the yoke and we start to leave the smooth landing strip starting towards our beautiful destination. We usually climb out around 400 feet per minute; passing all the beautiful tree tops. On a clear day in about five minutes if we take off from Millville airport, we can see all the wonderful Atlantic City lights in one direction. Weââ¬â¢ll also be able to see Philadelphia and Delaware too. When itââ¬â¢s a clear day, preferably almost time for sunset, we usually like to fly over the water. We always get the best views in the world that way of the sunset. Usually that day Iââ¬â¢ll bring my camera so I can get some outstanding pictures; I could probably sell those pictures. The unbelievable colors from the water and the sun, itââ¬â¢s just priceless. When itââ¬â¢s a cloudy day we will try to fly up to the clouds and find an opening to fly above the clouds. Thatââ¬â¢s when the altimeter reads 5000 feet, thatââ¬â¢s when I know we reached the place I enjoy the most. You just canââ¬â¢t imagine the beauty in the clouds until youââ¬â¢ve experienced it yourself. No words really can describe the views. Thatââ¬â¢s my favorite part, not that I donââ¬â¢t enjoy the whole ride, but it is absolutely the most majestic place in the sky, towering clouds everywhere. Itââ¬â¢s almost like looking at snowy mountains. He will usually get on the radar at this point since we canââ¬â¢t really see anything around us but clouds. This way we can keep track of every other plane around us. Meanwhile, we are all telling each other over the radio how wonderful the views are. As we continue to take in our unbelievable views we notice itââ¬â¢s starting to get late and we are in need to get fuel also. As we come to the end of our plane ride, we start to head back. On our way back down from the majestic clouds we happen to have a few geese flying parallel with us. They were soaring thru the clouds and all around us. We call into the traffic advisory to make sure the runway is clear for our landing. They let us know we are all clear to make a landing. Then we circle the airport, so we can line up with the runway and get ready for our landing. We then start to descend from our majestic trip up to the clouds; we are coming in fast. We start to see the beautiful tree tops again. We hit the landing strip, itââ¬â¢s a little on the bumpy side, then it starts to smooth out. Then we start to slow down and come to a crawl. We then drive the plane slowly to our parking spot where we park the plane. Then we begin to shut the plane down. We turn the propellers off and all the electronics and avionics off. We then adjust our seats and get out of the plane. Now is the hard part of the whole day. We both have to push the plane back into its parking spot. Then we tie down the plane and put chucks under the wheels. We do this, so if a gust of wind comes through it doesnââ¬â¢t blow the plane away; since that does happen. I would have to say flying is best for leisure time, since this is what I enjoy doing the most when it comes to having leisure time. When it comes to leisure, you are supposed to do something you enjoy doing. Thatââ¬â¢s why I fly for leisure, since itââ¬â¢s a big adrenaline rush for me but it also is very relaxing for me at the same time. So if you ever want to take a ride with Sam and I just let me know and youââ¬â¢ll get to see all the wonderful things we have seen and some.
Friday, November 15, 2019
An Annotation of Wallace Stevens Of Modern Poetry Essay -- Wallace St
An Annotation of Wallace Stevens' Of Modern Poetry In "Of Modern Poetry," Stevens describes the purpose of modern poetry given what the audience knows and values. Modern poetry must be different from traditional poetry, because people of his time perceive themselves and their world differently than the people of earlier times. Stevens suggests that war, like other changes, have affected what people believe. Poetry must reflect to its audience what they want to hear. It must show them that the order, meaning and value they need is real, in so much as their minds both need it and can create it. OF MODERN POETRY The poem of the mind in the act of finding What will suffice. It has not always had To find: the scene was set; it repeated what Was in the script. Then the theatre was changed To something else. Its past was a souvenir. It has to be living, to learn the speech of the place. It has to face the men of the time and to meet The women of the time. It has to think about war And it has to find what will suffice. It has To construct a new stage. It has to be on that stage And, like an insatiable actor, slowly and With meditation, speak words that in the ear, In the delicatest ear of the mind, repeat, Exactly, that which it wants to hear, at the sound Of which, an invisible audience listens, Not to the play, but to itself, expressed In an emotion as of two people, as of two Emotions becoming one. The actor is A metaphysician in the dark, twanging An instrument, twanging a wiry string that gives Sounds passing through sudden rightnesses, wholly Containing the mind, below which it cannot descend, Beyond which it has no will to rise. It must Be the finding of a satisfaction, and may Be of a man s... ...resent in his poem all specific examples. Therefore, it is interesting to notice that he finds women as representative of humanity as men. Again, this reflects the beliefs of people of his time -- social roles of men and women and social propriety of the past were not held by modern people. Poets must recognize this change and reflect the sensibilities of their audiences. The audience of modern poetry should be the mind, the contents of modern poetry should be from the mind, and the source of modern poetry is the mind of the poet. Humans can act on their ability to create a new conceptual and cultural play derived from values and truths of their minds. Writing modern poetry, likewise is poets acting on their ability to create from the mind and respond to people who have learned to look to themselves for order and meaning. Thus, the poem is of the act of the mind.
Tuesday, November 12, 2019
Julius Caesar Play Essay
In play, Julius Caesar, it has strength that makes the play a famous play. In the play, we could understand characters emotion and behaviors clearly since it is in their own words instead of a narration. From the text from Cassiusââ¬â¢s dialogue,â⬠For my part, I have walked about the streets, submitting me unto the perilous night.â⬠we could emphasizes how Cassius is showing off to Casca the braveness he has. Another point would be the speeches that are introduce in the play. Another example would be in Act 1, scene 2 where Antony comments, ââ¬Å"When Caesar says, do this, it is performed. Sometimes not only the characters dialogue could be recognize as his or her personality and characteristics. In this text by Antony, we could feel the powerful leadership from Caesar. Speeches help a better understanding of each character thought towards different people. Such as the speech that Antony gave where it begins with ââ¬Å"Friends, Romans, Countrymen, lend me your earsâ⠬ ¦..â⬠In this speech Antony keep repeating ââ¬Å"Brutus is an honorable manâ⬠, this shows sarcasms that Antony is speaking out. While reading this speech, you will find confusions where Antony is criticizing Brutus action but on the other hand he keeps stating that Brutus is an honorable man that opposites other facts. This kind of passage grabs the reader attention to think profoundly. The weakness would be the organization of the plot. I believe the play is moving in a speed what I believe is fast. Fast play makes it difficult to recognize clearly with each scenes and acts. For example from the meeting of conspirators to the death of Julius Caesar flows quite rapid. Between those two scenes, I feel a bit empty cause no way that these conspirators did not planned in a way that they could successfully without any obstacles kill Julius Caesar. The play might improve if the process of planning would be added between those two periods. We might absorb characters; personality and perspective towards this event during their planning. Another example would be the death of Calupurnia. The death news was interrupted abruptly during before the war. Calpurnia played such an important role when comforting Brutus and place a spy on him. This shows the role of women played in Roman however she had passed away in a second where no one has expected. Overall the organization is pretty flow and vivid enough. I like how each scene was isolated by the characters in the play where one side is mainly characters that dislike Caesar and the other side would be characters that supports Caesar. The only error would be the speed of the play that gives no time for readers to vividly understand the story. The descriptions of different characters are the best element in the play. Characters were vividly described as I stated earlier. One more example would be when Cassius stated, ââ¬Å"The torrent roared, and we did buffet it with lusty sinews, throwing it aside and stemming it with hearts of controversyâ⬠¦Ã¢â¬ ¦Ã¢â¬ ¦..or I sink!â⬠â⬠In this dialogue we could understand two charactersââ¬â¢ thoughts and history background. Cassius put up this fact show that he believes Caesar is not as capable as he should be. Another would be the background of Caesar where he was such a weaker. The diaglouge is very interesting because we could see through what each character wanted to express. One of the interesting dialogues was between Antony and Octavious. Octavious argued to refuse the instruction from Antony. Antony begins to realize the similar power between Octavious and Caesar when Octavious insist to follow left instead of right, so Antony called Octavious as Caesar after the argument of the formation.
Sunday, November 10, 2019
Ezra Pound in the Imagist Movement
Ezra Pound in the Imagist Movement In the beginning of the 20th century, a poetry style called Imagism was growing. Imagism is derived from Modernism and was created in response to Romanticism. Contrary to Romanticism, Imagist poems consist of brief sentences of dry clarity which painted an exact visual image and poetic statement. Thence leaving little to no room for interpretation due to it's candidness expressing of ideas. Imagism was also a conferrer to the french Symbolist movement, but antithetical to it in that Symbolism analyzes more in music and Imagism more in art and sculpture.In the Imagist Movement belonged a group of poets called Imagists. The main contributors to the poetic style were John Gould Fletcher, Harriet Monroe, Ezra Pound and many others. The most influential poet in the Imagist movement and the most famous was Ezra Pound. Pound, born in Ohio in 1885, completed two years of college at the University of Pennsylvania and earned a degree from Hamilton College in 1905. His work had a major influence in famous poets such as Robert Frost and T. S. Eliot. After graduation, Pound taught for a short time at Wabash College in Indiana and then left forEurope,where he lived most of his life. His first sum of poetry, ââ¬Å"A Lume Spentoâ⬠, (In which he carried copies to distributed when he moved to London later that year) was published in Venice in1908. His second, ââ¬Å"The Personae of Ezra Poundâ⬠, was published in London in 1909 and was immediately acclaimed by critics. Pound wrote more than seventy books, contributed to seventy others, and published more than 1,500 articles. Being an Imagist, Pound had many strict rules to his style of writing. One of which he stressed lyricism and was selective in use of words.A lyrical poem is ââ¬Å"strongly marked by imagination, melody, and emotion, and creates a single, unified impressionâ⬠(Holman, 1986, p. 283). Pound, as well as all other Imagist poets followed other rules such as using direct treatment of the ââ¬Ëthing' whether subjective or objective, using absolutely no word that does not contribute to the presentation, and as regarding rhythm: to compose in the sequence of the musical phrase, not in sequence of a metronome. Another important aspect of Pound's literary career was his large promotion of other writers and artists. He persuaded Harriet Monroe to publish T.S. Eliot's ââ¬Å"The Love Song of J. Alfred Prufrock,â⬠He was also an early supporter of the Irish novelist James Joyce and helped him in publishing his work in literary magazines before they were published in book form. Pound praised other poets while they were still fairly unknown such as D. H. Lawrence, Robert Frost, and Ernest Hemingway. In all of the Imagist movement, there has been many contributors, poets, and poems. Though Ezra Pound doesn't regard his work to any significant level, it is evident that his work is held at the highest respect of imagist movement and well after his death.
Friday, November 8, 2019
Parents and kids relationships essays
Parents and kids relationships essays "October Sky" by Joe Johnston and "Every Day Use" by Alice Walker's stories deal with parents and kids relationships. John Hickam and a middle-aged woman are parents who find themselves choosing between both of their kids. Dee and Jim are the strongest kids of the family who've followed their parents' expectations. Homer and Maggie are very different from their brother and sister. They have very different goals compare to their brothers and sisters. As consequence their relationship with their parents experience obstacles and conflicts. As readers we capture the distinctions that this parents have between their kids. They treat them differently. The theme that stands the most is based on the relationship between parents and children. John and Walker have learned to accept their kids and the differences that create a different out come from the begging of the story until the end. Hickam and Walker faced conflicts and gained their parents respects by changing their static relationship into dynamic acceptance between them. Homer devotion to rockets and differences between his brothers does not follow his dad's expectations creating conflicts between them and static their relationship as father and son. In "October Sky", the story takes place at a West Virginia mining town during the 1950's. People could only survive working in coalmines. John is a mine superintendent and fully expects Homer to follow his footsteps. He demonstrates to him how much he wants him to become a coal minter and says " homer I was born for this, and I shouldn't be surprise you were to." This creates conflict with his dream of becoming a Rocket Scientists. By winning the science project he would be able to gain a scholarship and becoming a rocket scientist. He follows his dream over passing the problems like when he's arrested for flying his rockets. This makes his father say something he's never said before. In this scene he shows how ...
Tuesday, November 5, 2019
How to Calculate Activation Energy
How to Calculate Activation Energy Activation energy is the amount of energy that needs to be supplied in order for a chemical reaction to proceed. The example problem below demonstrates how to determine the activation energy of a reaction from reaction rate constants at different temperatures. Activation Energy Problem A second-order reaction was observed. Theà reaction rate constant at three degrees Celsius was found to be 8.9 x 10-3 L/mol and 7.1 x 10-2 L/mol at 35 degrees Celsius. What is the activation energy of this reaction? Solution Theà activation energy can be determined using the equation:ln(k2/k1) Ea/R x (1/T1 - 1/T2)whereEa the activation energy of the reaction in J/molR the idealà gas constant 8.3145 J/Kà ·molT1 and T2 absolute temperatures (in Kelvin)k1 and k2 the reaction rate constants at T1 and T2 Step 1: Convert temperatures from degrees Celsius to KelvinT degrees Celsius 273.15T1 3 273.15T1 276.15 KT2 35 273.15T2 308.15 Kelvin Step 2 - Find Ealn(k2/k1) Ea/R x (1/T1 - 1/T2)ln(7.1 x 10-2/8.9 x 10-3) Ea/8.3145 J/Kà ·mol x (1/276.15 K - 1/308.15 K)ln(7.98) Ea/8.3145 J/Kà ·mol x 3.76 x 10-4 K-12.077 Ea(4.52 x 10-5 mol/J)Ea 4.59 x 104 J/molor in kJ/mol, (divide by 1000)Ea 45.9 kJ/mol Answer: The activation energy for this reaction is 4.59 x 104 J/mol or 45.9 kJ/mol. How to Use a Graph to Find Activation Energy Another way to calculate the activation energy of a reaction is to graph ln k (the rate constant) versus 1/T (the inverse of the temperature in Kelvin). The plot will form a straight line expressed by the equation: m - Ea/R where m is the slope of the line, Ea is the activation energy, and R is the ideal gas constant of 8.314 J/mol-K. If you took temperature measurements in Celsius or Fahrenheit, remember to convert them to Kelvin before calculating 1/T and plotting the graph. If you were to make a plot of the energy of the reaction versus the reaction coordinate, the difference between the energy of the reactants and the products would be ÃâH, while the excess energy (the part of the curve above that of the products) would be the activation energy. Keep in mind, while most reaction rates increase with temperature, there are some cases where the rate of reaction decreases with temperature. These reactions have negative activation energy. So, while you should expect activation energy to be a positive number, be aware that its possible for it to be negative as well. Who Discovered Activation Energy? Swedish scientist Svante Arrhenius proposed the term activation energy in 1880 to define the minimum energy needed for a set of chemical reactants to interact and form products. In a diagram, activation energy is graphed as the height of an energy barrier between two minimum points of potential energy. The minimum points are the energies of the stable reactants and products. Even exothermic reactions, such as burning a candle, require energy input. In the case of combustion, a lit match or extreme heat starts the reaction. From there, the heat evolved from the reaction supplies the energy to make it self-sustaining.
Sunday, November 3, 2019
Gas-particle flow through preforated plates Thesis
Gas-particle flow through preforated plates - Thesis Example Historically developing and investigating such systems has been a complex endeavour. These challenges have been ameliorated significantly with the introduction of fluid computational systems. This text is aimed at analysing gas particulate systems that are specifically designed for service with perforated plate systems. Perforated plate systems present unique challenges in themselves because of the effects of closely placed fluid streams. This investigation will attempt to describe gas solid systems flowing through perforated plates by developing a complete background through secondary research. Various industrial and other applications necessitate the utilisation of gas solid systems. These systems have been in use for a long period of time dating to as far back as the 1920ââ¬â¢s when commercial attempts at coal gasification were being performed. The fortyââ¬â¢s saw the application of these multi phase systems to the FCC (fluid catalytic cracking) systems while the fifties saw an increase in their use to processes such as sulphide roasting, drying and calcining. Similarly the sixtyââ¬â¢s witnessed the growth of these systems to the commercial production of various monomers such as the production of acrylonitrile, vinyl chloride and oxychlorination processes. (Crowe) In rapid succession the seventies also witnessed various improvements in these petro chemical processes with the use of multi phase systems. However, through these entire developments one thing remained common to all processes other than the use of solid gas systems. This commonality was the use of per forated plates to mix up these gas solid systems. (Crowe, Sommerfield and Yutaka, Multiphase Flows with Droplets and Particles) The preference provided to perforated plates stemmed from the need to let fluid streams through and to ensure enough turbulence to promote mixing. In due course of time, these solid gas systems along with the use of
Friday, November 1, 2019
How hr functions are handled Essay Example | Topics and Well Written Essays - 500 words
How hr functions are handled - Essay Example A position is created a plan to recruit a suitable employee is implemented. A committee is formed to formulate a recruitment plan that shorts applicants, and interviews are conducted and hiring is done. Breaks are issued differently depending on a countryââ¬â¢s regulating laws, and supervisors can give this breaks in some departments and in some staff members give breaks. This breaks can be lunch breaks or leaves. Some countries can give 30-60mins lunch break while some countries can give lunch breaks after 5 working hours but for both cases it is either regulated by supervisors or staff members (Mondy and Noe, 2005). Vacation days are administered by the head of the department and are necessary for all employs to help balance their wok life to their social life. During this period, an employee is entitled to be paid, and the length of this vacation is given depending on the employees years of working in the company. The human resource department designs a way of calculating the pay to be given to the employee during vacation days. Human resource staff has the responsibility to draft letters of employment to new employees. Upon employment for small companies, the staff also controls payroll duties such as holiday maintenance schedules. For compensation to remain effective, itââ¬â¢s the work of this staff to control wages and salaries within the company (Mondy and Noe, 2005). Employeeââ¬â¢s skills are developed further by the human resource department by providing mentoring programs and training. The staff reviews the employees performance and deals with complaints from employees and work on solving any disputes that arise. For union employees, their contracts are overseen by human resource to come up with negotiation to assist the management. Federal and state laws are regulated by human resources to control benefits and compensations resulting, It is with the help
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