Anorexia And What Causes It :: essays research papers

What causes Anorexia Nervosa? Eating disorders are not new. Anorexia Nervosa was first formally diagnosed in 1874, and the symptoms have been observed as far back as 300 years ago.(Walsh and Devlin 1) Although the condition has been known for centuries, it seems to be center stage now during the last decade or so. What is behind Anorexia? Is it inherited? Is Anorexia caused by some type of mental illness, or maybe environmental pressures? Does culture play a role in whether or not someone suffers from Anorexia? These questions are not easily answered,as we know if we have had any family members or close friends who have suffered from Anorexia. It's not as easily diagnosed as the measles or chickenpox, where the doctor knows exactly what the cause is. We will discover that there is no one clearcut cause for Anorexia. According to Women's Health Weekly one research study collected blood from 200 families where at least two of the siblings were suffering from Anorexia, several of the test results suggest a possible link between Anorexia and a shared suseptability gene found in many of the siblings (10) . We must keep in mind that although this research is promising it is still as of yet incomplete data, which in essence makes it a theory. This by no means suggests that there is not a biological link, but that more research needs to be done. There have also been a connection made between Anorexia and mental illness. Indeed recent research has discovered a strong link between Anorexia and several psychiatric disturbances such as; depression, agoraphobia, and social phobics to mention a few. The most promising connection is that many Anorexics are responding to a wide variety of psychiatric medication(Nagel and Jones 2). Although the numbers are not in yet, the fact that many of these people are responding to medication suggests a solid connection between mind and body. If we look at just a couple of behaviors many Anorexics display it does very much mimic that of a psychiatric disturbance. Most Anorexics are overly preoccupied with meal preparation and feeding everyone except themselves. Does this sound somewhat compulsive? Depression also seems to be a common trait among Anorexics, although the mere fact that these people are literally starving themselves can itself induce depression. One study found that 93% of their &q uot;persistant"Anorexic subjects suffered from depression. Interestingly 37% of their "recovered" Anorexics still presented with depression.

Safe Disposal of Wastewater – Disinfection

2.1.4 Disinfection Disinfection is the primary mechanism for the inactivation or devastation of infective beings to forestall the spread of waterborne disease to downstream users and the environment. ( Municipal Technology Branch U.S. EPA, 1999 ) Chlorination is the most common method of disinfection. Chlorine is effectual at killing most bacteriums, viruses and Protozoa that rise hazards to human wellness. The reactions of Cl in effluent are shown as below: Chlorine2+ H2O > HOCl + H-Cl Chlorine Hypochlorous Gas Gas HOCl + OCl + H Hypochlorite Ion In chlorination intervention, Cl must be removed before treated H2O is released due to chlorine is itself toxic to marine life. Sodium bisulfite is added to the treated H2O to take any Cl residue. ( Patrick, n.d. ) Besides, ultraviolet light disinfection is a physical procedure that transportations electromagnetic radiation with a wavelength of about 4 to 400 nanometers from a quicksilver discharge lamp to an being ‘s familial stuff ( DNA and RNA ) . When UV radiation, generated by an electrical discharge through quicksilver vapour, penetrates the familial stuff of micro-organisms and idiots their ability to reproduce. ( Anon. , 1999 ) UV disinfect at wavelength of about 254nm is most efficient for disinfection intent. This procedure adds nil to the H2O but UV light, therefore, there is no residuary consequence that can be harmful to worlds or aquatic life. In add-on, UV is an effectual germicide for chlorine-resistant Protozoa like Cryptosporidium and Giardia. However, UV disinfection is non every bit cost-efficient as chlorination. Recently, ozone has begun to acquire attending as a effluent disinfection method. Ozone is an unstable gas comprising of three O atoms, the gas will readily degrade back to O, and during this passage a free O atom or free group is formed. Most wastewater intervention workss generate ozone by enforcing a high electromotive force jumping current ( 6 to 20 kVs ) across a dielectric discharge spread that contains an oxygen-bearing gas. Ozone is a really strong oxidizer and viricide. It has greater disinfection effectivity in taking virus and bacteriums present in H2O due to direct oxidization or devastation of the cell wall with escape of cellular components outside of the cell, reactions with extremist byproducts of ozone decomposition and harm to the components of the nucleic acids. ( Anon. , 1999 ) Ozone is besides known to cut down the concentration of Fe, S and manganese and extinguish olfactory property and gustatory sensation jobs. Ozone oxides the manganese, sulfur and Fe into in dissoluble metal oxides. These indissoluble atoms are subsequently removed by filtration. Furthermore, ozone increases the O content of H2O, a good side-effect of disinfection. 2.1.5 Third Treatment After biochemical debasement of the sewerage in the secondary intervention, the clarified wastewater is farther treated to take non-biodegradable toxic organic pollutants, disable disease doing beings and viruses, and other man-made pollutants. ( Anon. , n.d. ) After this intervention, the waste H2O becomes relatively safer and can be discharged into the environment. There are three chief third intervention procedures, which are filtration, lagooning, and alimentary remotion. In the filtration procedure, sand or activated C are used to filtrate the effluent. The H2O is made to go through through a bed of sand activated C, so that the particulate affair in the H2O adheres to the filter medium and gets removed from the H2O. Sand filtration removes much of the residuary suspended affair whereas filtration over activated C removes residuary toxins. ( Anon. , n.d. ) Lagooning provides colony and farther biological betterment through storage in big semisynthetic pools or lagunas. These lagunas are extremely aerophilic and colonisation by native macrophytes, particularly reeds, is frequently encouraged. Small filter feeding invertebrates such as Daphnia and species of Rotifera greatly assist in intervention by consuming the biodegradable atoms in the sewerage H2O ( taking all right particulates ) . Removal of foods nitrogen and P is necessary as their inordinate release to the environment can take to a buildup of foods, called eutrophication that in a manner lead to the giantism of weeds, algae, and blue-green algaes ( bluish green algae ) . This lead to a phenomenon called Algae Bloom, where there is a rapid growing in the population of unsustainable algae which finally dies. As the bacterium works on the decomposition of these algae, they use up excessively much of O which may take to the decease of most of the aquatic biology which creates more organic affair for the bacteriums to break up. In add-on to doing deoxygenation, some algal species produce toxins that contaminate imbibing H2O supplies. Therefore, remotion of foods is indispensable measure in third effluent intervention. Phosphate remotion is achieved by precipitation as Ca phosphate. Besides, N is removed through the biological oxidization of N from ammonium hydroxide to nitrate ( nitrification ) , followed by the decrease of nitrate to nitrogen gas ( denitrification ) . Nitrogen gas is released in the ambiance and therefore removed from the H2O. ( Anon. , n.d. ) 2.1.6 Sludge Treatment Sludge is produced from the intervention of effluent in on-site ( infected armored combat vehicle ) and off-site ( activated sludge ) systems. The sludge are likely to incorporate microorganisms which may lend to the transmittal of diseases, every bit good as organic and inorganic contaminations which may be risky or toxic to worlds or have damaging effects on the environment in general. Therefore, all sludge must be treated before recycling or disposal and the grade of intervention depends on the intended concluding usage. The intervention procedure may affect thickener, dewatering, digestion, composting, and concluding disposal. 2.1.6.1 Sludge Thickening Thickening of sludge increases its solids content and reduces the volume of free H2O thereby minimising the unit burden on downstream procedures such as digestion and dewatering. The most normally used inspissating procedures include gravitation thickener, dissolved air floatation and extractor thickener. Gravity thickener is normally carried out in a round armored combat vehicle where the sludge is fed to the armored combat vehicle through a centre provender good. The provender sludge is allowed to settle and the thickened sludge is withdrawn from the underside of the armored combat vehicle. Conventional sludge roll uping mechanisms with deep trusses or perpendicular lookouts are used to stir the sludge gently thereby easing the release of H2O from the sludge. The supernatant flow is returned either to the primary subsiding armored combat vehicles or to the influent of the intervention works, whereas the thickened sludge is pumped to digesters or dewatering installations. Typically, sludge can be thickened to approximately 2 to 3 % for solids derived from activated sludge or RBC systems, whilst for primary sludge and dribbling filter sludge, they can be thickened to approximately 4 to 6 per centum solids concentration. ( Alturkmani, 2012 ) Flotation thickener is a solid-liquid separation procedure. Separation is unnaturally induced by presenting all right gas bubbles into the floatation procedure system. The gas bubbles become affiliated to the solid particulates, organizing a gas-solid sum with an overall majority denseness less than the denseness of the liquid. Therefore, these sums float on the surface of the fluid. Once the solid atoms have been floated to the surface, they can be collected by a skimming operation. ( Lawrence K Wang, n.d. ) Centrifuges are a compact, simple, flexible, self-contained unit. They have the disadvantages of high capitals, care and power costs and frequently a hapless, solids-capture efficiency if chemicals are non used for bio sludge. However, they have extra advantage of less infinite demand, less odour potency and housework demand. ( Anon. , n.d. ) Centrifugal thickener is acceleration of deposit through the usage of centrifugal force. Centrifuges are normally used for inspissating waste activated sludge. Primary sludge is usually non fed to centrifugate as it may incorporate scratchy stuff. 2.6.1.2 Stabilzsation Stabilization is the term used to denote the procedure of biochemical O demand ( BOD ) decrease. The stabilisation procedure can be carried out under aerobic or anaerobiotic conditions. In anaerobiotic system, the sludge is passed through a well-mixed digester at 35 °C. The procedure is uninterrupted and takes 15-20 yearss. The organic stuff interruptions down in the digester to bring forth methane gas and C dioxide. The gas is burned to heat the digester or in really big workss to bring forth electricity through a combined heat and power works. Digested sludge has a low smell and H2O is easy removed to cut down volume. The procedure kills potentially harmful bacteriums and can be enhanced by usage of high force per unit area or sonic systems which destroy bacteriums cells. ( Anon. , n.d. ) Aerobic stabilisation is carry out in an aeration armored combat vehicle with the nowadays of O which is same manual as in an activated sludge procedure. Due to the high O demand, this procedure is energy intensive and high costs. In aerophilic digestion, sludge stabilisation is achieved when aerophilic and facultative micro-organisms convert biodegradable organic affair in an environment where aeration is provided. End merchandises of the digestion are chiefly C dioxide, H2O and non-biodegradable stuffs. 2.1.6.3 Sludge Conditioning Sludge conditioning is a procedure that sludge solids are treated with chemicals to fix the sludge for dewatering procedures. Chemical conditioning prepares the sludge for better economical intervention with vacuity filters or extractors. Sulfuric acid, alum, chlorinated copperas, ferric sulphate, and ferrous chloride with or without calcium hydroxide are common chemicals that used in this procedure. The intent of adding chemicals to the sludge is to take down or increase its pH value to a point where little atoms coagulate into larger 1s and the H2O in the sludge solids is given up most readily. Thermal conditioning has two rudimentss which are wet air oxidization and heat intervention. Wet air oxidization play a function in reduces the sludge to an ash whereas heat intervention improves the dewaterability of the sludge. This procedure produces a more readily dewaterable sludge and besides provides effectual disinfection of the sludge. Blending is a procedure where two or more types of sludge are â€Å"blended† together to ease a higher sludge solids concentration and a more homogeneous mixture of sludge prior to dewatering. Blending operations tends to diminish the chemical demand for conditioning and dewatering sludge. The blending operation normally takes topographic point in sludge keeping armored combat vehicles usually where primary sludge is assorted with waste activated sludge. ( Anon. , n.d. ) 2.1.6.4 Dewatering Sludge dewatering is a procedure that taking H2O from sludge. The most common manner to dewater sludge is to physically squash the H2O out of the sludge. The usual dewatering method are pressure filtration dewatering, belt imperativeness dewatering filtration, air sludge drying procedures, sludge dewatering centrifugation and vacuity filtration. Furthermore, a sludge desiccant can be utilized at the terminal of the procedure. Desiccants are oven like equipment that really bakes out the H2O. 2.1.6.5 Volume Decrease Sludge incineration is the thermic devastation of sludge by oxidization at high temperature, this procedure besides known as burning. The gases from burning must be kept at temperature of 677?C to 760?C until they are wholly burned. Wet air oxidization is one of the methods for the intervention of aqueous effluents. In wet air oxidization aqueous waste is oxidized in the liquid stage at high temperatures of 400K to 573 K and force per unit areas of 0.5MPa to 20 MPa in the presence of an oxygen-containing gas. ( Anon. , n.d. ) 2.1.6.6 Sludge Disposal 2.1.7 Safe Disposal of Wastewater Wastewater intervention workss must dispose of the remainders ensuing from effluent intervention.

Rose For Emily Essay examples - 877 Words

A Rose for Emily by William Faulkner Emily was a woman that cannot be described without a the words â€Å" not quite normal†, and â€Å"extra ordinary.† The story, â€Å"A Rose for Emily† by William Faulkner is about one woman’s life, from her being a teen to her death in her house. The town’s people did not like her, her family did not like her, but when she died, everybody showed up to Miss Emily’s Funeral. The only person to see Emily was her old manservant, a black man that was the cook and the gardener. The only time that the town would see him was when her went to the grocery store to shop. He would never talk to anybody while he was there. The end of her life never saw Emily out of her house. The town questioned†¦show more content†¦The town thought that she was to kill herself, but her talk of marriage to Homer changed that. Emily and Homer started to get to know each other quite well during his time there. But it was a relationship that was to pass. †¦Homer himself had remarked- he liked men, and it was known that he drank with the younger men in the Elks club-that he was was not a marrying man. Soon, after the work had been finished, the men were gone, and Homer Barron was but a story. This is about the time that Emily stopped going out. She used to teach town children china painting, but they grew old, and they did not carry their children on. Soon, the only element of Emily’s household to be seen was her manservant that would go shopping, but would never talk to anyone. And then, she died. In her old age, inside her own house like her father. The town’s people came. Some out of respect, most to feed their curiosity to see the inside of this mysterious house. They paid their respects to the family and the servant, and walked around and surveyed the household. But there was one room left that they did not see. Already we knew that there was one room in that region upstairs which no one had seen in forty years†¦ They broke down the door, and the room was open for the group to see. Covering the entire room was a thick coat of dust. On the sideShow MoreRelatedAnalysis Of A Rose For Emily Essay1643 Words   |  7 PagesBeing An Outcast: Emily As Manifesting Thematic Alienation in Faulkner’s â€Å"A Rose for Emily† I. Introduction Being taught in high schools and universities all across the nation, William Faulkner’s short story â€Å"A Rose for Emily† has achieved a great deal of both academic and mainstream respect in the United States. In being arguably one of Faulkner’s strongest stories, and since Faulkner himself has assumed the position of being one of the great masters of American fiction, â€Å"A Rose† is undoubtedlyRead MoreMotivation In A Rose For Emily836 Words   |  4 PagesWilliam Faulkner’s A Rose for Emily is a very intriguing short story about Miss Emily Grierson. In her early life, her father sheltered her from all men that wanted her. When he later died, she found a delightful man named Homer Barron. Emily and Homer had a relationship that was shamed by many of the people of Jefferson. Miss Emily’s name had always been in the gossip of the town. Miss Emily stayed confined in her home for the majority of her life. When she finally died, her family e ntered a roomRead MoreA Rose For Emily Analysis1020 Words   |  5 PagesIn â€Å"A Rose for Emily† by William Faulkner, it is apparent that the topic of this narrative is about one dealing with newly found changes in their life. In this short story, the protagonist, Emily Grierson, deals with heavy amounts of adjustment and loss, along with the judgement of the people of her town. In this story, Faulkner focuses on capturing the physical and mental struggles of transitioning from traditions one has always known to changes that make one’s life completely different. The settingRead Moreâ€Å"A Rose for Emily† Essay704 Words   |  3 Pagesï » ¿Samuel Martin Instructor Waszak LIT 100 December 7, 2014 â€Å"A Rose for Emily†: Explain what we learn about Miss Emily’s character in the story (not just what she does, but what kind of person she is). Use specific evidence found in the story to support your conclusions. Be alert to the possibility that the narrator who reveals this evidence to us might have certain biases of his/her/their own. In the poem â€Å"A Rose for Emily†, William Faulkner stated that â€Å"another sad and tragic manifestationRead MoreA Rose of Death in A Rose for Emily by William Faulkner667 Words   |  3 PagesA Rose for Death Among many twentieth-century writers who have attempted to write about murder and mystery, William Faulkner’s ability to create an uncomfortable mood is incomparable to any other. When Miss Emily Grierson died, our whole town went to her funeral. In the introduction of A Rose for Emily, the pages are immediately infested with the theme of death, which brings the reader to question why this story has such a depressing tone upon separating the front cover from its pages. MakingRead MoreA Rose For Emily By William Faulkner1270 Words   |  6 PagesWilliam Faulkner’s short story â€Å"A Rose for Emily† thoroughly examines the life of a strange woman name Emily Grierson who lives in the town of Jefferson. If we examine â€Å"A Rose for Emily† in terms of formalist criticism, we see that the story dramatizes through setting, plot, characterization, and symbolism on how Miss Emily’s life is controlled by a possessive love she had for her father and lover. William Faulkner uses Emily’s life as the protagonist to examine from a formalist aspect. In orderRead MoreA Rose For Emily By William Faulkner1507 Words   |  7 Pagesliterary reputation included poetry, novels, short stories, and screenplays. Faulkner won two Pulitzer Prizes for Fiction and the Nobel Prize in Literature. â€Å"A Rose for Emily† is a short fascinating story written by William Faulkner and it was his first short story published in a national magazine. The story involved an old woman named Emily Grierson, the daughter of a rich man that was considered a hero in the town where they lived. The story takes place in the fictional Town of Jefferson, MississippiRead MoreWilliam Faulkners A Rose for Emily1600 Words   |  7 Pages William Faulkners A Rose for Emily  is set in the small southern town of Jefferson during the early decades of the twentieth century . At this time, vast and cardinal changes were being made by the upcoming new south to conceal and move from the horrid truths that were a part of the towns history. In lieu of this, Je fferson was at a turning point in which they were having difficulty coming to terms with these changes . Integrating Faulkners use of character and symbols with other sourcesRead MoreA Rose For Emily By William Faulkner1326 Words   |  6 PagesA Rose For Emily Fiction Analysis English Literature Essay In A Rose for Emily, William Faulkner tells the story of an old and lonely lady stuck in her own timeframe. Her controlling father died some thirty years ago and she has never quite found her own ground. Her house has become the most hideous looking home on the once most select street in the city. Previously elegant and white with scrolled balconies, it was now encroached with dust and decay. The people in Miss Emily s city gossip aboutRead MoreA Rose For Emily By William Faulkner1277 Words   |  6 PagesMiss Emily Grierson, the main character in the strange short story â€Å"A Rose for Emily† written by William Faulkner. It would be best to examine her in a mental capacity as well as the circumstances that may affect her. Throughout the story, Miss Emily’s unpredictable and eccentric behavior becomes unusual, and the reader, like the townspeople in the story, is left to speculate how Miss Emily has spent years living and sleeping with the body of Homer Barron. An important quote from the story was that