T Pentyl Chloride Lab Report Essay Example

T Pentyl Chloride Lab Report Paper Edward Kluges, by a temperature of 79-ICC, the product is expected to boil (pig. 20). At about ICC, the product began to stabilize. This matches the expected boiling point for the product. After simple distillation and measurement, a total of 17 ml of the product was obtained. Side Reactions: Summary of experiment: The following experimental procedure was directed from Introduction to Organic Lab Techniques CHEMIC IL Courseware by Dry. Edward Kluges found on pages 18- 20. Using 22 ml of t-Phenyl alcohol and 50 ml of 37. 3% concentrated HCI, a mixture was created and swirled in a 125 ml separators funnel. After the solution had been mixed for approximately one minute, a stopper was used to prevent the mixture for escaping the separators funnel as it was inverted. Once inverted, built-up gas was released by turning the stopcock to its opened and closed positions. This was repeated for about four times in one minute intervals. Then the layers were allowed to settle until a separation between liquids could be observed. Due to the low density of the product, the top layer was to be extracted. The bottom layer was carefully and slowly extracted out of the separators funnel. The crude product was washed by taking the reaction product in the separators funnel and adding 23 ml of denizen H2O. The mixture was shaken and allowed to settle until layers were observable. The top layer was the desired product and approximately 25 ml of aqueous layer was extracted from the separators funnel. Next, 25 ml of 5% Enhance was added to the separators funnel in order to neutralize the acid. This mixture was swirled, plugged with the stopper and inverted. Built-up gas was released by turning the stopcock to its opened and closed positions, releasing CO by-product. We will write a custom essay sample on T Pentyl Chloride Lab Report specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on T Pentyl Chloride Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on T Pentyl Chloride Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer This was done four times in one minute intervals. The solution was allowed to settle until layers were observable. The bottom layer that contained salt, base and water was extracted from the separators funnel. The crude product was washed again as mentioned previously. The wet, crude product was placed into the 50 ml Erlenmeyer flask. Small amounts of Cacao were added to dry the solution. The flask was sealed and the mixture was swirled and left to settle. Once the solution turned clear, it was ready for simple distillation technique. Using filter paper and a funnel, he solution passed through and was placed into the 100 ml round bottom flask attached to the distillation apparatus. The temperature was monitored and recorded when the product reached a stable temperature of about 80 to ICC. After distillation was complete, the product was measured in a graduated cylinder and recorded. The procedure to purify the crude product was the simple distillation technique found in A Molecular Approach to Organic Laboratory Techniques by Pave et. Al. Report Questions: 1. Aqueous sodium bicarbonate was used to wash the crude t-Phenyl chloride. A. What was the purpose of this wash? The purpose of the wash with the basic bicarbonate was to remove the acidic components of the mixture. This helps facilitate the phase separation needed in order to extract the waste and keep the desired product. B. Why would it be undesirable to wash the crude halide with aqueous sodium hydroxide? Aqueous sodium hydroxide is a very strong base. By using a very strong base, it can cause the reaction to proceed with the E mechanism and gives us undesirable alkaline products. 2. Some 2-methyl-2-butane may be produced in the reaction as a by-product. Give a mechanism for its production.

T Pentyl Chloride Lab Report Essay Example

T Pentyl Chloride Lab Report Paper Edward Kluges, by a temperature of 79-ICC, the product is expected to boil (pig. 20). At about ICC, the product began to stabilize. This matches the expected boiling point for the product. After simple distillation and measurement, a total of 17 ml of the product was obtained. Side Reactions: Summary of experiment: The following experimental procedure was directed from Introduction to Organic Lab Techniques CHEMIC IL Courseware by Dry. Edward Kluges found on pages 18- 20. Using 22 ml of t-Phenyl alcohol and 50 ml of 37. 3% concentrated HCI, a mixture was created and swirled in a 125 ml separators funnel. After the solution had been mixed for approximately one minute, a stopper was used to prevent the mixture for escaping the separators funnel as it was inverted. Once inverted, built-up gas was released by turning the stopcock to its opened and closed positions. This was repeated for about four times in one minute intervals. Then the layers were allowed to settle until a separation between liquids could be observed. Due to the low density of the product, the top layer was to be extracted. The bottom layer was carefully and slowly extracted out of the separators funnel. The crude product was washed by taking the reaction product in the separators funnel and adding 23 ml of denizen H2O. The mixture was shaken and allowed to settle until layers were observable. The top layer was the desired product and approximately 25 ml of aqueous layer was extracted from the separators funnel. Next, 25 ml of 5% Enhance was added to the separators funnel in order to neutralize the acid. This mixture was swirled, plugged with the stopper and inverted. Built-up gas was released by turning the stopcock to its opened and closed positions, releasing CO by-product. We will write a custom essay sample on T Pentyl Chloride Lab Report specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on T Pentyl Chloride Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on T Pentyl Chloride Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer This was done four times in one minute intervals. The solution was allowed to settle until layers were observable. The bottom layer that contained salt, base and water was extracted from the separators funnel. The crude product was washed again as mentioned previously. The wet, crude product was placed into the 50 ml Erlenmeyer flask. Small amounts of Cacao were added to dry the solution. The flask was sealed and the mixture was swirled and left to settle. Once the solution turned clear, it was ready for simple distillation technique. Using filter paper and a funnel, he solution passed through and was placed into the 100 ml round bottom flask attached to the distillation apparatus. The temperature was monitored and recorded when the product reached a stable temperature of about 80 to ICC. After distillation was complete, the product was measured in a graduated cylinder and recorded. The procedure to purify the crude product was the simple distillation technique found in A Molecular Approach to Organic Laboratory Techniques by Pave et. Al. Report Questions: 1. Aqueous sodium bicarbonate was used to wash the crude t-Phenyl chloride. A. What was the purpose of this wash? The purpose of the wash with the basic bicarbonate was to remove the acidic components of the mixture. This helps facilitate the phase separation needed in order to extract the waste and keep the desired product. B. Why would it be undesirable to wash the crude halide with aqueous sodium hydroxide? Aqueous sodium hydroxide is a very strong base. By using a very strong base, it can cause the reaction to proceed with the E mechanism and gives us undesirable alkaline products. 2. Some 2-methyl-2-butane may be produced in the reaction as a by-product. Give a mechanism for its production.

Free Essays on Oppression To Women

Barbie as the Epitome of Beauty 1. Prompt (See Picture) Pictures like this really remind me of the negative body images that the media puts on women. There is no reason that they couldn’t have gotten real people to be in these ads. Instead of putting real women with real flaws in these adds, they put a real person’s head on a perfectly constructed body, or just make the person entirely cartoon like with large breasts, big hips, and a unrealistically skinny waist that if it were a real person could not fit her internal organs inside her body. These images remind me of one childhood toy - Barbie I believe this represents a form of oppression. Some people think that this only oppresses women with image problems. I disagree. Do you know how many women have eating disorders of one sort or the other? There are women that starve their bodies of essential nutrients. There are women that eat everything that they want, and then feel guilty for feeling that full and purge everything, causing extreme harm to their bodies. Then there are the girls who hate themselves for eating, and that makes them depressed, which makes them eat even more and hate themselves more. All of this is because of the idea that the media puts forth that if you do not look like that images in the magazines then you are not beautiful. 2. Research Question What effects do images of women in the media have on women developing eating disorders? 3. Discussion Short skirts, tiny waists, large breasts, and flawless airbrushed smiling faces. These are the images of womanhood that I have seen while I was growing up. I see them on the television, on the sides of buses, on billboards, magazines, and everywhere else. And I wonder why so many female adolescents have self-image and weight issues? Add these limited images of feminine beauty a little baby pink, blond hair, blue eyes, and what do we have? I would have to guess the beloved plastic childhood toy that sm... Free Essays on Oppression To Women Free Essays on Oppression To Women Barbie as the Epitome of Beauty 1. Prompt (See Picture) Pictures like this really remind me of the negative body images that the media puts on women. There is no reason that they couldn’t have gotten real people to be in these ads. Instead of putting real women with real flaws in these adds, they put a real person’s head on a perfectly constructed body, or just make the person entirely cartoon like with large breasts, big hips, and a unrealistically skinny waist that if it were a real person could not fit her internal organs inside her body. These images remind me of one childhood toy - Barbie I believe this represents a form of oppression. Some people think that this only oppresses women with image problems. I disagree. Do you know how many women have eating disorders of one sort or the other? There are women that starve their bodies of essential nutrients. There are women that eat everything that they want, and then feel guilty for feeling that full and purge everything, causing extreme harm to their bodies. Then there are the girls who hate themselves for eating, and that makes them depressed, which makes them eat even more and hate themselves more. All of this is because of the idea that the media puts forth that if you do not look like that images in the magazines then you are not beautiful. 2. Research Question What effects do images of women in the media have on women developing eating disorders? 3. Discussion Short skirts, tiny waists, large breasts, and flawless airbrushed smiling faces. These are the images of womanhood that I have seen while I was growing up. I see them on the television, on the sides of buses, on billboards, magazines, and everywhere else. And I wonder why so many female adolescents have self-image and weight issues? Add these limited images of feminine beauty a little baby pink, blond hair, blue eyes, and what do we have? I would have to guess the beloved plastic childhood toy that sm...

Biography of Matilda of Scotland, Wife of Henry I

Biography of Matilda of Scotland, Wife of Henry I Matilda of Scotland (c. 1080–May 1, 1118) was a princess of Scotland and later queen of England through her marriage to Henry I. She was a popular queen who presided over an educated and pious court, and she even functioned as queen regent in her husbands stead at times. Fast Facts: Matilda of Scotland Known for:  First wife and queen consort of King Henry I of England and sometimes queen regent, mother of  Empress Matilda/Empress Maud  and grandmother of King Henry IIBorn: c. 1080 in Dunfermline, ScotlandParents: Malcolm III of Scotland, Saint Margaret of ScotlandDied: May 1, 1118 in London, EnglandSpouse:  King Henry I of England (m. 1100–1118) Early Years Matilda was  born around 1080 as the older daughter of the Scottish king Malcolm III and his second wife,  the English princess Margaret later canonized as  Saint Margaret of Scotland.  The royal family had several children: Edward, Edmund of Scotland, Ethelred (became an abbot), three future Scottish kings (Edgar,  Alexander I, and David I), and Mary of Scotland (who married Eustace III of Boulogne, becoming the mother of Matilda of Boulogne who later married King Stephen of England, a nephew of King Henry I of England). Matildas father Malcolm descended from the Scottish royal family, whose brief overthrow inspired Shakespeares Macbeth  (his father was King Duncan). From the age of 6, Matilda and her younger sister Mary were raised under the protection of their aunt Cristina, a nun in the convent at Romsey, England, and later at Wilton. In 1093, Matilda left the convent, and Anselm, the archbishop of Canterbury, ordered her to return. Matildas family turned down several early marriage proposals for Matilda: from William de Warenne, second Earl of Surrey and Alan Rufus, Lord of Richmond. Another rejected proposal, reported by some chroniclers, came from King William II of England. King William II of England died in 1100 and his son Henry quickly seized power, supplanting his older brother through his quick action (a tactic his nephew Stephen would use later to supplant Henrys named heir). Henry and Matilda apparently knew each other already; Henry decided that Matilda would be the most suitable bride for his new kingdom. The Marriage Question Matildas heritage did make her an excellent choice as a bride for Henry I. Her mother was a descendant of King Edmund Ironside, and through him, Matilda was descended from the great Anglo-Saxon king of England, Alfred the Great. Matildas great uncle was Edward the Confessor, so she was also related to the Wessex kings of England. Thus, marriage to Matilda would unite the Norman line to the Anglo-Saxon royal line. The marriage would also ally England and Scotland. However, Matildas years in the convent raised questions of whether she had taken vows as a nun and was thus not free to marry legally. Henry asked Archbishop Anselm for a ruling, and Anselm convened a council of bishops. They heard testimony from Matilda that she had never taken vows, had worn the veil only for protection, and that her stay in the convent had only been for her education. The bishops agreed that Matilda was eligible to marry Henry. Matilda of Scotland and Henry I of England were married at Westminster Abbey on November 11, 1100. At this point, her name was changed from her birth name of Edith to Matilda, by which she is known to history. Matilda and Henry had four children, but only two survived infancy. Matilda, born in 1102, was the elder, but by tradition she was displaced as heir by her younger brother William, who was born the next year. Queen of England Matildas education was valuable in her role as Henrys queen. Matilda served on her husbands council, she was queen  regent when he was traveling, and she often accompanied him on his travels. From 1103 to 1107, the English investiture controversy led to a conflict between church and state over who had the right to appoint (or invest) church officials at the local level. During this time, Matilda served as a mediator between Henry and Archbishop Anselm, eventually helping to resolve the conflict. Her work as regent lives on: to this day, charters and documents signed by Matilda as regent survive. Matilda also commissioned literary works, including a biography of her mother and a history of her family (the latter was completed after her death).  She administered estates that were part of her dower properties and oversaw several architectural projects. In general, Matilda ran a court that valued both culture and religion, and she herself spent a great deal of time on works of charity and compassion. Later Years and Death Matilda lived long enough to see her children make good royal matches. Her daughter Matilda (also known as Maud), was betrothed to the Holy Roman Emperor Henry V, and she was sent to Germany to be married to him. Maud would later attempt to take the English throne following her fathers death; although she did not succeed, her son did and became Henry II. Matilda and Henrys son William was the heir apparent to his father. He was betrothed to Matilda of Anjou, daughter of Count Fulk V of Anjou, in 1113, but died in an accident at sea in 1120. Matilda died on Mary 1, 1118, and was buried at Westminster Abbey. Henry married again but had no other children. He named as his heir his daughter Maud, by that time widow of Emperor Henry V. Henry had his nobles swear fealty to his daughter and then married her to Geoffrey of Anjou, brother of Matilda of Anjou and son of Fulk V. Legacy Matildas legacy lived on through her daughter, who was set to become Englands first reigning queen, but Henrys nephew Stephen seized the throne, and enough barons backed him so that Maud, though she fought for her rights, was never crowned queen. Mauds son eventually succeeded Stephen as Henry II, bringing the descendants of both Norman and Anglo-Saxon kings to the throne. Matilda was remembered as the good queen and Matilda of Blessed Memory. A movement began to have her canonized, but it never actually took shape. Sources Chibnall, Marjorie.  The Empress. Malden, Blackwell Publishers, 1992.Huneycutt, Lois L.  Matilda of Scotland: A Study in Medieval Queenship. Boydell,  2004.â€Å"Matilda of Scotland.†Ã‚  Ohio River - New World Encyclopedia, New World Encyclopedia.

Russia culture 1 Essay Example | Topics and Well Written Essays - 500 words

Russia culture 1 - Essay Example They mostly operate an autocratic management style whereby the leader has more power than committees. Their mode of communication in business is very formal. Russia has many ethnic groups, and each individual group has their form of music. Therefore, the culture has diverse music. Their traditional music was mainly ritual folk songs and the holy music of the Orthodox Church (Rickman, Mead, and Gorer 65). In the 19th century, they developed their music and were the founders of classical music. Their music has developed over time and has been characterized with improvement in use of musical instruments The Russians believe in respect for the old people and that failure to obey them results in misfortunes. The formal greetings for males are bone-crushing handshakes, and a soft handshake implies that one is unhappy. Eye contact is valued since it is a sign of honesty between the communicating parties. Women and girls kiss three times or can hug one another. Gift giving is highly appreciated, and it is a taboo to visit other people and fail to take to them gifts or presents. The Russians are very superstitious. They believe in the evil look and do not want unknown people commenting good things about their property. They believe that carrying empty buckets or cans is a sign of bad omen. They also believe that touching their money makes it unprofitable. Russians value wedding so much and the finances to be spent are only limited to the financial ability of the families. To them, it is a big occasion and would lead to lasting enmity if a person ruined that day. The wedding dress is hidden from the male and is supposed to be a surprise to him. The value of the wedding ring defines the amount of love that the bride has for the groom (Rickman, Mead, and Gorer 85). After death, Russians wash the body and dresses it into expensive clothes. The death of the elderly is very sorrowful, and they are treated with respect on

Argument essay Example | Topics and Well Written Essays - 500 words - 6

Argument - Essay Example Those who drive a race-type car must be jealous at least part of the time of someone who drives a gas saving car with decent, if not flashy looks. Getting good gas mileage is the main reason someone buys a Volt or Prius Hatchback but which one gets better mileage is not a straightforward answer. The EPA rates the Volt’s lithium-ion battery at a 38 mile range. After the battery dies an electric engine turns on which recharges the battery by powering a generator. The car gets 37 mpg with the engine running. The Prius gets 50 mpg with but only has about a one mile range when operating on straight electricity. The Prius plug-in model gets a disappointing six-to-15 mile electric range. The bottom line on gas mileage is the Volt does better if you drive 40 miles per day or less. If you drive 100 or more the Prius is the more economical choice. Unlike a Prius, a Volt can be driven for weeks at a time without putting any gas in it, as long as you drive 40 miles per day or less which many people do. The car will ask the driver if it can turn the engine on every once in a while so the fluids will circulate preventing damage to the engine due to lack of use. Anyone engine needs to be started occasionally to keep the fluids from becoming stale. Volt owners that drive less than 40 miles per day can get the equivalent of 400 miles per gallon. Both cars did well in the crash tests. The Volt is quieter. Mashing the accelerator on a Prius will turn on the engine but not the Volt; it stays silent until the whisper-quiet engine kick in. The Volt is slightly larger on the outside but the Prius has more room inside. The Volt carries four people while the Prius holds five. Both are moderately priced but the Prius is a little less expensive, with an asterisk. The Volt runs from $40,000 to $45,000 fully equipped but most buyers are eligible for a $7,500 rebate from the federal government. The Prius Plug-in Hybrid retails for $32,000 and

Marketing Of Landscape Gardening Essay Example for Free

Marketing Of Landscape Gardening Essay Landscapers use their aptitude for art combined with their knowledge of plants to create breathtaking landscapes. But a landscape artist cannot share his knowledge unless he promotes his business. Business promotion is a combination of activities that create and maintain a positive image in a customers mind. Customer service, broad knowledge of the business and fair pricing strategies support promotional activities and contribute to the success of any business. Word of Mouth (Recommendations) This is the cheapest and best method of advertising your Landscape Gardening business, but it requires that you already have done some work. Your existing clients can be your biggest help in spreading the word about your business. This business thrives on referrals, so make sure that you talk to your existing customers and ask them if theres anyone that may benefit your service. Advertisements Advertise on newspapers, tv ads, local ad magazines, billboards, your vehicle etc, however, the ads should be short and easy to read. Plant Exhibitions Contact convention organizers and event planning agencies in your area and learn about business exhibition opportunities. Many events are geared toward the small business owner and are reasonably priced. Attend plant exhibitions to promote your business. Plant exhibitions allow you to promote your products or services at a venue related to landscaping. Such exhibitions provide a venue to network and reach out to customers. Trade shows are also a good place to distribute promotional items. Create Business Cards Create business cards that match your brochures and website design. Creating matching promotional collateral creates a cohesive feel and helps establish your brand. Make Brochures Create visually pleasing brochures. Make sure the brochure lists your services, pricing, contact information and a bit about the business. You can also hire a designer to prepare brochures for you. Create a Website Contact a Web developer or create a website on your own. Your websites content should appeal to people in your area. Include helpful information, such as guides to weeding, planting and winterizing gardens. Several services offer website packages that make creating a site simple. Link your site to Twitter and possibly a dedicated business page on Facebook

Essay --

Introduction Bacillus thuringiensis (Bt) has become the foremost biopesticide since the beginning of the 1970s, due to the lethality of the toxin to insects. It has attracted industry to use it worldwide as an efficient weapon against agri-cultural pest. formerly, B. thuringiensis was considered an entomopathogen. Within the last four decades the complexity and diversity of B. thuringiensis as an insecticidal microbe have been elucidate. The first report on the crystalline parasporal body in the bacterium that might be related with the insecticidal activity appeared by 1953 (Hannay, 1953). Angus (1954) demonstrated that this crystal contains an alkaline- soluble toxin for insects. B. thuringiensis produces a f3-exotoxin well-known also as the fly-toxin, thermostable toxin, or thuringiensin, but this toxin was not permitted for use in agriculture because its toxicity was not limited to insect pests (Sebesta et al., 1981). The 8-endotoxin shows potential characteristics of an insect-specific bioinsecticide. By the end of the 1950s, the toxicity of the spore–crystal complex was classif...

Analysis of the Raven by Edgar Allen Poe Essay

The nineteenth century poet Edgar Allen Poe makes use of several literary devices in order to create a gloomy atmosphere in his poem â€Å"The Raven†. Alliteration, rhyme, onomatopoeia, assonance, and repetition are used to contribute to the melodic nature of the work and provide an almost â€Å"visual† representation of his gothic setting. Poe is a master of using these writing techniques. â€Å"The Raven† is one of his most popular works. This is certainly due, in part to his use of these literary devices in this piece. The poem tells of a narrator who is reading an old book in his parlor when he is interrupted by a knock at the door. The protagonist is in a period of grieving over the loss of his love, Lenore. At first, he wonders who the visitor might be and resolves to inform him or her that he is indisposed at the moment. The narrator finally opens the door only to find no one there. He returns to the chair (which Lenore will no longer occupy), only to hear the rapping again. He decides that the sound may be coming from the window, so he opens it. A raven enters through the window and lights upon a bust of a mythological figure that the narrator has in his room. The narrator questions the raven concerning its name, the bird answers â€Å"nevermore†. This startles the speaker, and he wonders aloud if the bird will leave him just as all of his friends seem to do. Again, he is answered by the raven â€Å"nevermore†. As the protagonist progressively becomes more and more upset with the situation, he decides that the raven must go. He even demands that the raven leave. The response â€Å"nevermore† is once again given by the bird, which refuses to go. The narrator finally concludes that his soul is inextricably tied to this foul beast and he is to be forever tormented by it. The melodic nature of the poem and its very gloomy tone is reinforced by Poe’s choice of words and the sound effects that they convey. By the use of rhyme, the poem is made to flow much like a song when read aloud. For example, the second line and the last three lines of every stanza rhyme with each other. Many other internal rhymes are also found within the lines of the poem. In fact, the first line of the poem contains an internal rhyme â€Å"Once upon a midnight dreary, while I pondered weak and weary†. Another example is found in Line 31 which reads â€Å"Back into the chamber turning, all my soul within me burning,† The poem is rife with such examples. Poe also uses repetition to accentuate the musical quality of â€Å"The Raven†. Obviously, the repeating of the word â€Å"nevermore† is used throughout the work not only to convey a sense of musicality, but to suggest the melancholy theme of this piece due to the connotations that the word expresses (lines 48, 54, 60, 72, etc.). Poe also uses repetition in other sections of the poem. In lines 16 and 17, we read â€Å"’Tis some visitor entreating entrance at my chamber door; – Some late visitor entreating entrance at my chamber door;† In these lines, we get the impression that the speaker is trying to reassure himself that there is no sinister force at work, but simply a visitor at his door. Edgar Allen Poe was extremely talented at choosing words which not only support the fluidity of the work while also reinforcing the tone. Alliteration is another literary device which is used throughout â€Å"The Raven†. Alliteration is the repetition of beginning consonant sounds. â€Å"The Raven† is full of examples of alliteration. An instance of this device is seen in line 26, in which the â€Å"d† sound is repeated: â€Å"Doubting, dreaming dreams no mortal ever dared to dream before;† While another example is found in line 45: â€Å"’Though thy crest be shorn and shaven, thou,’ I said, ‘art sure no craven,’† In the previous sample, the â€Å"th† sound, as well as the â€Å"sh† sound are used for effect. Poe craftily uses assonance throughout this piece, as well. Assonance is the repeating of a vowel sound in a line. Line 13 gives us an example of assonance as Poe couples the words â€Å"†¦purple curtain†. Immediately following this, he begins line 14 with the assonant words â€Å"Thrilled me-filled me†¦Ã¢â‚¬  Again, we see such a choice of words in line 59: â€Å"†¦hopes have flown†¦Ã¢â‚¬ . However, line 71, gives us perhaps the best example of Poe’s use of assonance when he writes â€Å"†¦grim, ungainly, ghastly, gaunt†¦Ã¢â‚¬  when describing the bird. Edgar Allen Poe also employs onomatopoeia in â€Å"The Raven†. Onomatopoeia is a technique of using words which imitates the source of a sound which is described. An example is found when the â€Å"rapping† and â€Å"tapping† upon the speaker’s door and window is described (lines 3,4,5,21,22, and 32). Poe also offers onomatopoeia in line 37, when he uses the words â€Å"flirt and flutter† to describe the raven entering from the window. Another fine example is found in line 80 in which the writer mentions the â€Å"tinkle† of foot-falls on the floor. â€Å"The Raven† offers a fine example of how the use of sound effects and other literary devices can be used by writers to establish a tone that creates a â€Å"mood† within the reader. Poe’s mastery of these tools is quite impressive. He artfully gives an illustration to writers, readers, and students of how to make full use of these implements to create the precise air of dread that Poe desires to convey, while maintaining the beauty of a flowing, melodic poem.

Renal Problems And Septic Shock Health And Social Care Essay

Systemic inflammatory response syndrome ( SIRS ) is expressed as febrility or hypothermia, tachycardia, tachypnea which may be associated with leucocytosis or leukopenia. SIRS generates broad spread inflammatory reaction in organic structure in response to external abuse which is protective for an person when its effects are restricted to pathogens, in other state of affairss inflammatory reactions are hurtful when they are directed against normal tissues in add-on to pathogens. [ 1,2 ] SIRS can ensue from legion conditions but termed as Sepsis, merely when infection sets in and morbific agent is detected. Sepsis consequences from an single response to external infection, which begins with systemic redness ab initio, followed by curdling abnormalcies and eventually deranged fibrinolysis. When sepsis causes one or more organ disfunction, the syndrome is termed Multiple Organ Dysfunction Syndrome ( MODS ) or terrible sepsis. [ 3 ] Sepsis-induced hypotension which is furnace lining to f luid boluses is termed Septic daze. Hypothermia associated with infected daze indicates hapless tegument and visceral perfusion, is normally associated with hapless forecast and high mortality rates of up to 30 to 40 % . Several serum biomarkers suggested holding diagnostic or predictive value in infected daze, but a unequivocal biomarker for everyday clinical usage is yet to be identified. One such marker is serum lactate which indicates pronounced hypoperfusion and tissue hypoxia in infected daze. Similarly serum Creatinine should besides be considered as marker of lessening organ perfusion in sepsis and Acute Kidney Injury should be regarded as index of ongoing organ harm and likely possibility of oncoming of infected daze. [ 4 ] AKI is due to sudden and drastic decrease in kidney map ( within 48 hours ) characterized by absolute addition in serum Creatinine ( & gt ; 50 % from baseline ) or a decrease in urine end product ( oliguria of & lt ; 0.5 ml/kg/hour for & gt ; 6 hours ) . Nephritic hypoperfusion and ischaemia during infected daze amendss nephritic tubules taking to acute cannular mortification ( ATN ) and have been demonstrated to be a common etiologic factor for AKI development during sepsis [ 5,6 ] . ATN was found to be a consistent histopathological determination in these patients, this would strongly propose that ischaemia and nephritic tubular cell mortification are likely an of import pathogenetic mechanism. [ 7,8 ] Acute kidney hurt have marked impact on the result of critically sick patients. Disease badness tonss such as the Acute Physiology and Chronic Health Evaluation ( APACHE II ) and Sequential Organ Failure Assessment mark ( SOFA ) both have included nephritic disfunction as forecaster of morbidity and mortality ; on the other manus liver disfunction tonss, coagulopathy, thrombocytes and other critical organ maps are non much stressed in APACHE II hiting system. To set up a unvarying definition of nephritic harm, RIFLE categorization was formulated which characterizes Risk, Injury, Failure, Loss and End-stage Kidney ( RIFLE ) . [ 9 ] An of import facet of the RIFLE categorization is that it grades the badness of acute kidney hurt on the footing of alterations in serum creatinine and urine end product from the baseline status. [ 10 ] Urine end product is an of import physiologic mark of organic structure fluid position, and unstable instability is common in critically sick patients due to extravasation of fluid into extravascular infinite or due to 3rd infinite losingss and eventually the nephritic disfunction. This farther suggest that reduced organ perfusion in infected daze plays a cardinal function in development of AKI taking to cut down creatinine clearance and increased serum creatinine degrees. [ 11,12 ] In this survey we compared increasing serum creatinine degrees with plasma lactates and SOFA tonss to observe oncoming of sepsis and infected daze and to prove the hypothesis that ongoing acute kidney hurt can bespeak reduced organ perfusion and oncoming of infected daze in critically sick patients.Patients and Methods:This survey was carried out to happen a correlativity between lifting serum creatinine degrees and oncoming of infected daze in 115 critically sick patients admitted in ICU and were managed following Surviving Sepsis guidelines. [ 13 ] Human ethical blessing was taken by the institutional moralss commission. Written informed consents were obtained from control topics and patients or their relations. The control groups were the healthy relations attach toing the patient. Entire 90 controls were taken, among them 65 were males and 25 females with a mean ( SD ) age of 36.5 ( 8 ) old ages. Among patient group 67 were males and 48 females with mean ( SD ) age 37.5 ( 6 ) old ages. Patients included in our survey had either of the undermentioned characteristics: ( 1 ) Clinical characteristics proposing infection ; ( 2 ) Core temperature & gt ; 38AÂ °C or & lt ; 35AÂ °C ; ( 3 ) Heart beats & gt ; 100/min ; ( 4 ) Respiratory rates & gt ; 30 breaths/min or demand for supportive mechanical airing and ( 5 ) Inadequate organ map or daze within 12 hours of registration. Patients excluded were: ( 1 ) aged patients older than 75 old ages ; ( 2 ) NYHA category III or IV patients ; ( 3 ) liver inadequacy ( Child C ) ; ( 4 ) HIV, HBsAg positive serology, Cancer patients. Demographic characteristics like age, sex, primary site of infection, morbific beings and disease badness scores including Acute Physiology and Chronic Health Evaluation Scores ( APACHE II ) and Sequential Organ system Failure Assessment mark ( SOFA ) were recorded for each patient ‘s at the clip of admittance in ICU and later. The plasma of these patients was tested for serum creatinine and lactates degrees at the clip of entry in ICU, so after every 24 hours till their stay in ICU. All the samples collected and patient inside informations gathered during the survey were coded to look into for prejudice and patient confidentiality was maintained as per the guidelines for surveies of human patients. Blood sample aggregation: First blood sample was collected prior to get down of antimicrobic, steroid therapy or vasopressors. Blood samples were collected from cardinal venous line ( 9 milliliter ) into sterilized tubings incorporating 1ml trisodium citrate ( TSC ) at the clip of patient admittance I ICU and later. Plasma was separated by extractor at 10,000 revolutions per minute for 15 min. The plasma was stored at -70AÂ °C for farther analysis and repeated freezing melt of samples was avoided in order to forestall debasement of plasma.Statistical analysis:The informations were analyzed by nonparametric analysis of discrepancy ( ANOVA ) with Newman-Keuls multiple comparing post-test. The relation between serum creatinine degrees, plasma lactates and APACHE & A ; SOFA mark was tested by finding the Pearson correlativity coefficient ( R ) . A P-value of less than 0.05 was considered important. All statistical analyses were performed with the Graph Pad InStat 5.0 demo plan ( Graph P ad Software, USA ) .Consequences:Among 115 patients admitted in ICU during the period April 2009 to May 2010, 45 patients were of SIRS, 39 patients were in sepsis and 31 patients in province of infected daze ( Table 1 ) . Sepsis was diagnosed on the footing of specific civilization studies from assorted possible sites of infection, including blood civilization study. Out of 115 patients studied there were 67 male patients and 48 females with a mean ( SD ) age of 37.5 ( 6 ) old ages. Mean serum creatinine degrees in healthy control group was 0.83 AÂ ± 0.26 mg/dl, runing from 0.4 to 1.6 mg/dl. In SIRS group, the average serum creatinine degrees were 3.45 AÂ ± 1.26 mg/dl, runing from 1.2 to 6.2 mg/dl ( Figure 1 ) . The APACHE II and SOFA score correlated linearly with serum creatinine degrees ( r2=0.74, P & lt ; 0.001 for APACHE & A ; r2=0.69, P & lt ; 0.001 for SOFA ; Figure2 ) bespeaking nephritic hurt with badness of redness. In sepsis patients average degrees were 7.15 AÂ ± 1.3, runing from 4.0 to 9.3 mg/dl. Pearson ‘s coefficient showed additive correlativity of serum creatinine and sepsis badness tonss ( r2 = 0.65, P & lt ; 0.001 for APACHE and r2 = 0.62, P & lt ; 0.001 for SOFA ; Figure2 ) . In patients of infected daze with nephritic disfunction really high serum creatinine degrees were observed with mean of 10.31 AÂ ± 2.29 mg/dl with values runing from 6.0 to 15.2 mg/dl, these values were significantly ( P & lt ; 0.01 ) higher than those with sep sis ( 7.01 AÂ ± 1.3 mg/dl ) , SIRS ( 3.49 AÂ ± 1.10 mg/dl ) and the control group ( 0.83 AÂ ± 0.26 mg/dl ) . Detection of metabolic acidosis in arterial blood gas analysis was evaluated farther by blood lactate appraisal ( Figure 3 ) . Blood lactate degrees in SIRS group were ( 5.14 AÂ ± 1.24mmol/L ) with scope from 2.2 to 7.8 mmol/L. Similarly blood lactate degrees in sepsis ( 7.73 AÂ ± 1.4mmol/L ) and infected daze group ( 9.53 AÂ ± 1.2mmol/L ) were significantly high ( 95 % CI in sepsis 7.25 to 8.21 ; daze 8.9 to 10.16 mmol/L ) . In control group mean values were 0.93 AÂ ± 0.39mmol/L ( 95 % CI 0.84 to 1.0 mmol/L ) . In order to detect a relation between extent of nephritic hurt and oncoming of infected daze, creatinine clearance ( taken as step of nephritic map ) was so compared with blood lactate degrees ( taken as index of anaerobiotic metamorphosis and daze ) , Pearson ‘s coefficient showed reverse relation between lifting lactate degrees and Creatinine clearance in patients with terrible sepsis and infected daze ( Figure 4 ; r2=0.48, P & lt ; 0.001in sepsis ; r2=0.56, P & l t ; 0.001in infected daze ) . The patients included in this survey were non given any nephrotoxic drugs and drug dose were modified as per criterion chronic nephritic disease guideline to forestall farther nephritic hurt [ 14 ] .Discussion:Patients come oning to infected daze during their stay in ICU may hold altered sensorium, deranged liver map, malabsorption syndrome or may hold respiratory trouble. It was observed in our survey that all such patients with infected daze have one common characteristic of crazed kidney map with AKI. The pathophysiology of AKI in infected daze is ill understood due to miss of histopathologic information, which in bend requires nephritic biopsy to observe any parenchymal or vascular alterations in nephritic tissue ; such biopsies are non routinely performed in most ICU set up. [ 15,16 ] In absence of such information, we performed an indirect appraisal of nephritic map during oncoming of infected daze. These observations were based on serum creatinin e degrees and creatinine clearance which was so correlated with disease badness tonss ( APACHE II and SOFA ) and serum lactate degrees ( index of anaerobiotic metamorphosis and daze ) . Assorted carnal surveies of AKI have been done which helps in more complex and invasive measurings of nephritic maps. [ 17 ] Most of these carnal surveies were based on either ischemia-reperfusion hurt or drug induced hurt and informations generated from such surveies may assist us in understanding the pathophysiology in a infected patient with AKI. A major paradigm developed from these observations in animate beings and worlds with daze is that AKI is due to nephritic hypoperfusion and ischaemia. This fact supported our position of utilizing AKI as index for decreased organ perfusion and oncoming of infected daze. [ 18 ] Under basal conditions blood flow to kidney is 360 ml/min/100gm of tissue where as blood flow to encephalon ( 50ml/min/100gm ) , bosom ( 70ml/min/100gm ) , lungs ( 25ml/min/100gm ) and liver ( 95ml/min/100gm ) . [ 19 ] Among all the variety meats, kidneys have really high flow rates, approximately three times higher than other critical variety meats, therefore metab olic maps of kidneys were more likely to be affected earliest by decrease in blood flow during infected daze, this may ensue non merely in a decrease in glomerular filtration but besides, in metabolic impairment perchance doing cell decease, acute cannular mortification and terrible AKI. [ 20 ] Glomerular filtration rate ( GFR ) is governed by glomerular filtration force per unit area, which in bend is determined by the relationship between the sensory nerve and motorial arteriolas. When the sensory nerve arteriola constricts due to hypoxia in infected daze, glomerular filtration force per unit area will fall and urine end product and GFR will besides diminish, ensuing reduced creatinine clearance and increased serum creatinine. [ 21 ] Arterial lactate concentration correlates with badness of infected daze and reflects metabolic changes associated with hemodynamic via media. Therefore, the association between high lactate degree and diminishing creatinine clearance are built-in to the badness of the daze and of multi-organ failure. [ 22 ] In add-on, epinephrine extract during infected daze besides enhances lactate production by itself ; the higher adrenaline dosage required in more terrible patients may besides hold contributed to this association. Following the natural history of infected daze in most ICU, it is impossible to happen patients deceasing of infected daze but without nephritic failure, the huge bulk of patients deceasing of multiorgan failure has a outstanding nephritic constituent and requires nephritic replacing therapy during their class in ICU. Renal biopsy during infected daze is non performed routinely because of important hazards owing to azotemic or infected coagulopathy and patient instability. However, this restriction does non impair the relevancy of our observations sing the pathophysiology of infected daze, as kidneys have highest blood flow per gm of tissue and AKI is changeless characteristic of terminal phase multiorgan failure so any via media in nephritic map in critically sick patients should be considered as indicant of decreased organ map and likely oncoming of infected daze.Decision:Kidneies are invariably involved in multiorgan failure of infected daze. Nephritic lesions associated with AKI in infected daze are more complex than the simple ague cannular hurt, so reduced creatinine clearance should be regarded as index of underlying mechanism of decreased organ perfusion and likely possibility of oncoming of infected daze in critically sick patients.

First Person Indentured Servitude Essay †Creative Writing

First Person Indentured Servitude Essay – Creative Writing Free Online Research Papers First Person Indentured Servitude Essay Creative Writing I would agree to travel to America as an indentured servant because my life in Europe is not going well. My life is bad because my father has recently died leaving me as the last living member of my family. In my country, I often see painful reminders of him everywhere in the cold and lonely streets. I am no greater than a commoner and have no land thus no social standing what so ever. Going to America as an indentured servant would give me free passage to the country in return for my services for a period of my life in which everything would be arranged for me. I wish to leave my country because I have no family left and no job. During the cold nights I am surrounded by murderers and petty thieves as I sleep on the street and in bake alleys. If I had one pound in my pocket, I would be dead in mere seconds. The town I live in is always dirty and I often wake up to find rats eating out of garbage cans on the corner. As an indentured servant, I will be able to buy land. I hear the colonies give it to anyone at a reasonable price. This will raise my social standings since it is judged by how much land a man owns. It will also bring me respect, which is something I have never had and something I have always craved. I have heard some past indentured servants have even joined the ranks of the colonies most powerful. Lastly, in America I will be fed, lodged, and guaranteed wages by my master. I will have some say in these matters because he will need me to agree to the conditions on a contract. In addition, I will be guaranteed fair treatment from my master by the colony court system. It will be easier to go as an indentured servant than to try to raise the money my self with no job and no safe place to keep any money. Thereafter my arrival to America I will be able to acquire everything and anything I want in time. It will only take me a small period of my life working fairly for conditions that I have some say in. Also I will get free meals and lodging with wages. In these new frontiers, I will be able to get land at cheap prices gaining me respect and some value in society. Therefore, I will go to America to start a new, better and happier life. I will go in the pursuit of my own happiness. Research Papers on First Person Indentured Servitude Essay - Creative Writing19 Century Society: A Deeply Divided EraThe Effects of Illegal ImmigrationTwilight of the UAWNever Been Kicked Out of a Place This NiceWhere Wild and West MeetCapital PunishmentUnreasonable Searches and SeizuresComparison: Letter from Birmingham and CritoQuebec and CanadaThe Spring and Autumn

Definition and importance of a tree butt

Definition and importance of a tree butt The butt of a tree is its bottom portion and this basal portion of the trunk is distinctively different from a trees branches, roots, and upper trunk.   A trees  butt is above the roots but separated from the trunk which continues upward toward the terminal bud A trees butt is often referred to by loggers as the bottom log of a felled tree. The first cut  nearly always starts at the butt or base of the tree for the initial cut. It is the most valuable part of the tree when sold and converted to a wood product A tree butt is also important when tree disease is detected at or near ground level. Butt rot diseases  are serious concerns for tree owners and tree managers. A basal rot will inevitably weaken  the tree to the point where its support system is compromised  resulting in trunk failure and the eventual death of the tree. The butt of a tree is also its most valuable section to a timber grower. If there is a defect in the butt log which by definition is the first 16 feet of a tree trunk, the trees lumber grade is diminished considerably. Butt Rot and Effects on Trees Butt rot  is a serious disease of trees and all species are susceptible to a greater or lesser degree. Fungal pathogens are the primary causal agent of butt rot  and attack the moist, vulnerable and under-protected lower portion of a tree trunk where its largest diameter is recorded. A tree is most  vulnerable to rot where the bottom end of the trunk  stem  makes contact with the  soil. The tree butts location, when diseased, can  attack the roots as well causing a disease known as  root rot. These kinds of  infections are  likely to impair the transport properties of the  xylem  tissue found in the cambial region under the tree bark. Again, it also weakens the stem and makes the plant more vulnerable to toppling. Rot in the area of the tree butt can spread to the roots and/or  move up and into the tree compartment producing a roughly conical column of dead, rotted wood which increases in size proportional to a trees age and ability to compartmentalize and stop the spread. These wood-decay diseases can start as a root or butt disease but can  overlap as both root and  stem decays. Most are caused by Basidiomycota  or fungi. They may get in through wounds in the lower part of the tree or penetrate roots directly. Understanding a Butt Log and Its Quality The highest quality logs typically  come from the first or lowest section  called the butt log by timber harvesters. The butt log is where the best, highest quality wood veneer and lumber is found. Wood veneer (usually hardwood) that is sliced  or plywood (usually pine) that is rotary cut  command high prices. It should be noted that high-quality trees with butt log damage or disease will negatively affect what will be paid at the timber harvest time. Buyers of veneer and plywood quality wood will  require certain minimum log lengths depending on the mills operation and set up.   A  common minimum used in North America is  8 feet plus an extra 6 inches  for trim allowance. However, different veneer markets have different requirements for species, wood color and grain quality and can take logs as long as 11 feet plus 6 inches. Top grade veneer logs may have a 14-inch diameter minimum and extra prime grade  can only come from the first butt cut. What is Tree Butt Swell? All trees will have some taper but the most valuable timber tree will maintain a cylinder-like form extending up the trunk. Any extra expansion of  tree trunk butt above the normal stump flare is called butt swell and is normal in some tree species (especially trees on wet sites like cypress and tupelo gum). Sound wood within the butt swell can be used but only as non-construction materials including wood chips and specialty items. Timber cutters are  recommended to cut above the swell for construction logs. Butt swell is considered a defect for veneer logs.

Organic Food Research Paper Example | Topics and Well Written Essays - 2000 words

Organic Food - Research Paper Example and fertilizers are chemically prepared and most of the compounds used are harmful for the environment..During irrigation, sometimes these compounds mix with the water and reach into the nearby ponds and lakes. The chemicals mix with the fresh water and accelerate the growth of the weeds. When these weeds die, large amount of bacteria start acting on them for their decomposition using ample amount of oxygen present in the water. This results in the death of the aquatic life due to the scarcity of the dissolved oxygen. For instance, an 8,000 square mile ’dead zone’ was created in the Gulf of Mexico killing tons of fishes and other aquatic lives mainly due to fertilizer run-off Not only this, but these chemical compounds are also harmful for the soil. They decrease the fertility of the soil at a much faster rate making it sterile and useless. These fertilizers are also absorbed by the fruits of the plant. These are the same fruit which we buy and eat and consequently get sick. Moreover, also contaminate ground water and make them polluted (Koch, 775). Making our farming methods organic will not only result in production of better quality of food but also add to sustainability and environment friendly processes. It will preserve biodiversity along with increasing soil fertility. An average organic farm provides more natural habitats to the wildlife. The low concentration of pesticide remnants and the hazardous chemicals avoids the killings of the non-harmful insects and flora. Biodiversity balances the predominance of the growing crop by encouraging the diversity of species and genes. A system with the co-existence of varied species yields better quality of crop. Apart from the preservation of biodiversity, production of organic food also improves the soil quality by... This report stresses that the popularity of organic food is growing dramatically constituting more than 2% of all food sales and sales of organic food in united states surpassed $13.8 billion in 2005. Consumers going for organic food may do so for a number of reasons including the perceived benefits to the environment, welfare of the animals, safety of the workers and the perception that organic food are safer and more nutritious. This also indicates the greater health concerns of the public. By the way, while producing organic food, the farmer allows the fruit to ripe according to their natural time without manipulating it which might lead to small production compared to the large commercial farming. This paper makes a conclusion that even though organic food has many advantages over the conventional ones, still we cannot really say that which food system is better. Organic food uses no chemicals. However, it is not completely pesticide free. This is mainly due to many factors beyond the control of the farmers. For example pesticide drifts from adjacent fields or soil irrigation water and contamination. Also the data available does not allow for a comparison between export and domestic sales. Non certified organic food is difficult to survey in practice. Even though a lot has already been done in this field, still a lot remains to achieve especially in developing countries. New methods and ideas are needed in the market so that organic food can reach even to the poor. After all everyone has the right to be healthy.