Prevention Of Pressure Ulcer

Book Review :: essays research papers

     Facing Death, Finding Love: The Healing Power of Grief and Loss in One Family’s Life was composed by Dawson Church. 1994. 140p. Aslan Publishing. Dawson Church is a distributer, editorial manager and creator. Past books he has created or co-wrote incorporate The Heart of the Healer and Communing with the Spirit of Your Unborn Child. He fills in as CEO of Atrium Publishers Group †a book wholesaler and lives with his better half and two kids in Lake County, California.      Dawson Church begins with his affirmations of thankfulness to all the individuals that have bolstered him in the composition and distributing of this book. The presentation by Church’s manager, Hal Zina Bennett, Ph.D., mirrors the facts uncovered in the book’s substance as updates that in opening our hearts and brains to the best secrets of all †the huge puzzles of life and passing †we find an affection that is as amazing in the getting as in the giving, rising above the entirety of our most profound and most appalling feelings. Possibly the most ideal approach to depict and summarize the substance of Church’s book that perusers are going to find is as follow†¦           â€Å"It is maybe in misery that we find the power that conveyed us by and by into manifestation, the explanation we embodied in any case. It is in the tearing open of heart that we find how monitored our lives have become, how little a confine we have exchanged off for safe ground. We perceive how our work is to be all the more cherishing, to live more completely in a regularly confounding world.† Church utilizes nine parts along with his afterword and index A: Grieving Rituals just as addendum B: Connecting With the Soul to cover all the substance of this book.      Chapter one †The Death †begins with the vision that demise can come out of the blue to anybody at whenever or wherever when one least gets ready for it. Passing to Church and his better half just as to numerous individuals on the planet are difficult to perceive and manage. He keeps think of inquiries, for example, â€Å"We felt him kicking simply the previous evening. What could have occurred among at that point and now? We didn’t feel any battle. Most likely he would have alarmed us if something weren't right? He could have conveyed his trouble, and we could have known and maybe done something.† Church couldn’t get over the startling demise of Montague since he imagined that no chance it might be happened when he and his better half didn't disregard any part of thinking about the newborn child in the belly.

A Case for Lower Case L Literature

A Case for Lower Case L Literature This is a guest post from Rachel Wagner. Rachel writes fiction, poetry, and essays. She teaches at Seton Hall University and lives in Newark, NJ with her son. A friend of mine told me a while ago, while she was still in high school, that she doesn’t read. When I acted surprised about it, she told me that she does read, but it’s just hood books. I was like… so you read. That “just” phrasing revealed a lot to me about how readers of lower case L literature feel about their books and themselves. It’s implied that certain genres of writing are not worthy of critical inspection, and that hurts Literature too because when people reading hood books or romance don’t consider themselves readers, they won’t venture out to other genres. This barrier alienates readers. Lower case L literature obviously doesn’t get the same respect that capital L Literature does. But why? More people buy them. They’re faster to get through. They’re engaging. They’re accessible. Especially now, when people’s attention span for reading has been shortened by the internet, literature seems like it would be a great avenue to make literary conversations and academic writing more popular. Recently, it was taking me forever (in a good way) to get through Norman Ohler’s Blitzed: Drugs in the Third Reich. Day after day, I’d pick it up and read as much as I could, but sometimes the words just blurred and I would lose the narrative. I also have a two year old, so long stretches of reading are hard to come by. Then Danielle Santiago’s book Grindin’ showed up from an interlibrary loan. I packed my kid up right away to go pick it up. I put Blitzed on pause and read Grindin’ in a day and a half. And it felt great. I was so happy to be back in a story. It was especially nice to be immediately curious, interested, and eager to find time to read. That book made it easier to return to and finish Blitzed after a couple days. Usually the first thing I want to do when I finish a book is go to Google and see what other people have said about it. For Literary books  like Blitzed that’s easy. There are tons are articles and think pieces and Twitter threads. That’s true of some popular literature books too, like Sister Souljah’s Coldest Winter Ever, but more often, there’s close to nothing. Nothing pops up right away for Grindin’, even though the writer is fairly well known. Sites like Amazon and Goodreads  become the place to converse, which is great in some ways, but, again, is isolating because it’s practically the only place where those conversations are happening. Hood books have this special quality about them that allows you to just get through it. The pacing of the story moves quickly, and it’s easy to lose track of time. Zane books, all of Sister Souljah’s novels, the Cartel seriesâ€"these books seem to physically pull you in. Similarly, romance novels drag you in. Sophie Kinsella’s Shopaholic series, for example, are genuinely fun to read. The chapter in which the narrator, Rebecca, is helping her love interest shop for suitcases was the first time I’d laughed out loud at a book since Tina Fey’s memoir. The most recent romance novel I read was An Extraordinary Union by Alyssa Cole, and the writing itself felt like Literature. It crossed over to historical fiction, and used a complex situation to say something larger about American culture. These are not simple books. The repeated use of erotic triangles that run through these genres can’t be the problem, since that narrative runs through a lot of Literary books. The readership, which includes a lot of women and prisoners, could be part of the stigma. The writers, who are usually marginalized by race, gender, or both and usually not MFA graduates, may also have something to do with it. The treatment of those commonly associated with literature, though, shows exactly why these books are important right now. Limiting the conversation that surrounds these texts that are relevant, meaningful to people’s lives, has serious consequences. Megan Sweeney did work on the topic of what incarcerated women read and the popularity of hood books in prisons, and more and more with middle class white and black women as well. In Keepin It Real: Incarcerated Womens Readings of African American Urban Fiction, she explains that “the genre allows readers to consider their experiences and speech patterns as worthy of representation in a book” (139). Publishing them is one piece of legitimizing the stories, but talking about them would enhance that. These stories are important and deserve critical inspection, and the more writing that gets done on these books, the better they’ll become. There’s a certain kind of power in being able to pick up a book and dive right in. Lower case L literature has a magnetic quality about it. These books stand alone and are also great in between more complex books. Most importantly, they tell necessary stories.

Essay on Pride and Prejudice Adaptations in Modern Film

Love in Relationships vs. Love for Oneself In a day where loving yourself first is not only accepted but often expected, it is a stretch for the 20th (or 21st) century mind to see marriage as a necessity, as it was for Jane Austen and some of the greatest of her heroines. Marriage for money and convenience, as well as familial preservation, formally dominated matchmaking choices. Love and romance were but luxuries in the business-like fashion of marriage. Austen contested this reality and criticized it, but she also placed one thing above romance: the Self. Austen undoubtedly prizes respect for the Self above social expectation and relationships. Handler and Segal (45) noted that themes of â€Å"independence, dependence, and choice† are†¦show more content†¦We presently live in a society and culture that emphasizes the Self over family and even wealth. A little tidbit of American wisdom explains this well: â€Å"it doesn’t matter what you do as long as you enjoy doing it.† Of course the desir es for riches and success are still present, but it is certainly more acceptable for someone to abandon his job on Wall Street to â€Å"follow his dream,† whatever that may be. And as for disappointing one’s family, well young people today are almost always anticipated to do so. â€Å"Finding† oneself is even now considered a step in normal development. Elizabeth Bennet would have probably fit right in. It should also be noted that Austen ignored the world outside of her respective settings. Pride and Prejudice does not make one direct mention of the on-going Napoleonic wars other than to state the presence of soldiers in Meryton. This is evidence of her investigation of the Self and how the quest for self-knowledge may overshadow the major events of the day. Today we still deal with this nasty exchange of concern for the world in favor of the concern for ourselves. Although Austen put emphasis on the Self she did not by any means ignore romance. Pride and Prejudice does include love-stories reminiscent of Shakespeare’s comedies, like The Merchant of Venice, with the happy-ending-for-all-who-deserve-it conclusion. Jane and Bingley live happily ever after with lots ofShow MoreRelatedJane Austen s Pride And Prejudice1446 Words   |  6 PagesAusten’s: Pride and Prejudice; two well-known versions would be Sue Birtwistle’s 1995 BBC miniseries and Joe Wright’s 2005 version. Both films depict a love story between a man and a woman who have to overcome a series of obstacles to end up together. It is clear that these two very different directors interpret the original novel in their own way, but is it more important to stay true to the original, or to tweak and change some of it? When it comes to Jane Austen’s Pride and Prejudice, Birthwistle’sRead MorePride and Prejudice V Bride and Prejudice1600 Words   |  7 PagesThe way of life in this modern society has developed itself over hundreds of years. Still, however changed, the values of todays society remain from the period of Regency England. Regency England, being the super power of the world in the 18th century, imposed the morals and ethics upon the world as they did their own country, where people were expected to abide by. Jane Austen illustrates the values of this prejudiced society through Pride and Prejudice, which involved the role of women as a majorRead MorePride And Prejudice V Bride And Prejudice Essay1603 Words   |  7 PagesThe way of life in this modern society has developed itself over hundreds of years. Still, however changed, the values of todays society remain from the period of Regency England. Regency England, being the super power of the world in the 18th century, imposed the morals and ethics upon the world as they did their own country, where people were expected to abide by. Jane Austen illustrates the value s of this prejudiced society through Pride and Prejudice, which involved the role of women as a majorRead MoreEqual Engagement: In Marriage and Between Cultures Essay1503 Words   |  7 Pages Jane Austen’s Pride and Prejudice illuminates a social courtship between the proud Mister Fitzwilliam Darcy and the shrewd, unconventional Miss Elizabeth Bennet. Elizabeth is proud of her own identity. She astutely justifies herself as â€Å"a gentleman’s daughter† (Austen 337) in her confrontation with the prejudiced and class-conscious Lady Catherine de Bourgh. Mister Fitzwilliam Darcy, who shares Elizabeth’s sharp tongue, comes from a family of high social status; his privileged upbringing instilledRead MoreLiterary Analysis : Pride And Prejudice 1420 Words   |  6 PagesProse analysis Page 6 Reflections – your opinion of author novel (see your reaction journal) Page 7 Works Cited (minimum of 5 reliable sources) Felicia L. Cridland Professor Kay DeCasper English 1101-98 4 October 2017 Pride and Prejudice Research Paper Pride and Prejudice is a romance novel by Jane Austen, first published in 1813. The story charts the emotional development of the protagonist, Elizabeth Bennet, who learns the error of making hasty judgments and comes to appreciate the differenceRead MoreJane Austen s Pride And Prejudice Essay1756 Words   |  8 Pagesthen in turn producing TV shows, films, etc. She is an â€Å"innovator who has trimmed away the flab of form†¦ to cause verbiage in others† (Lynch, â€Å"Sequels† 160). Austen is best known for her merit in writing social commentary to bridge the gap between romance and realism. This essay will use Lost in Austen, an adaptation of Austen’s Pride and Prejudice, in order to address both radical and conservative natures the TV mini-series generates as opposed to the novel. The modern escapism and fantasy Lost in AustenRead MoreManners in Pride and Prejudice by Jane Austen3437 Words   |  14 Pages Pride and Prejudice Jane Austens Pride and Prejudice not only established her historical importance among scholars and critics, but continues to remain popular. Pride and Prejudice, a comedy of manners, was published in 1813, and is a staple of the English literature. It recreates the social world of the landed gentry of early 19th-century England and embodies the theme that preconceptions and egotism can overcome true love. Pride and Prejudice is somewhat autobiographical; emphasizes the key elementsRead More Mansfield Park, the novel, or Mansfield Park the film? Essay1842 Words   |  8 Pages There have been many adaptations of Jane Austens books over the years; all six of her novels have been made into films or television dramas with varying degrees of success, from the classics of Persuasion, Pride amp; Prejudice and Sense amp; Sensibility, to the funny modern version of Emma in the form of Clueless. In this paper I want to show how director Patricia Rozema has made Austens novel Mansfield Park mu ch more modern, accessible, and, as some claim, radical, by skipping parts of theRead MoreThe Poignant Prophet By Aldous Huxley1680 Words   |  7 PagesIf his death had been at any other time, it would have been published in every newspaper (Garret). A majority of Huxley’s popular works contain a few themes that are consistent throughout his writings. Among them, Utopian society, mysticism, and modern change in society are the most popular subjects discussed by critics. Huxley’s most popular novel Brave New World is the center of many of these debates; his other works reflect his philosophy by different methods. Utopian society is best representedRead MoreSymbolism Of The Scarlet Letter By Nathaniel Hawthorne1956 Words   |  8 PagesIf it is important, it is remembered. If it has any value, it will last far into the future, if not forever. This is why Michelangelo’s David, the Mona Lisa, the automobile, The Beatles, and Pride and Prejudice are all remembered. If it is the first to make an impact, it becomes important. That is when it will affect people in future generations. For example, the Model T is not produced anymore, but is the grandfather of almost every car made today, affecting jobs, businesses, people, and the world

The Immortal Heroes of Homer’s Iliad Essay - 1419 Words

The Immortal Heroes of Homer’s Iliad In Homer’s Iliad, a warrior can only attain heroism and immortality by embracing an early death. Jean-Pierre Vernant describes this paradox in his essay, â€Å"A ‘Beautiful Death’ and the Disfigured Corpse in Homeric Epic.† According to Vernant, heroes accept the fact that life is short and â€Å"devote themselves completely and single-mindedly to war, adventure, glory, and death† (53). 1 Curiously, this is because heroes overcome death only when they embrace it (57). The importance of death stems from the fact that the individual is defined by his reputation and esteem among others, as Vernant points out when he argues that . . . real death lies in amnesia, silence, demeaning obscurity, the absence of†¦show more content†¦Heroes devote themselves to ideals of strength and bravery, die gloriously on the battlefield, and are immortalized by the poetry of generation (22.304). 2 Many passages in the Iliad demonstrate this heroic endeavor to die a death worthy of future generations’ praise, but most visible among them is the description of the shield of Achilleus. Fashioned by Hephaistos, this shield depicts many scenes, but one scene in particular stands out in its relation to the greater epic—the vineyard. This pastoral scene can be read as a rich allegory of the heroic quest for glory and immortality. The vineyard’s structure resembles the Achaian camp and the fortifications of war. Hephaistos inscribed on the bronze shield â€Å"a field-ditch of dark metal, and drove all around this a fence of tin† (18.564). The combination of ditch and fence recalls the defenses that the Achaians built around their own ships: Poseidon described earlier how the Achaians had â€Å"built a wall landward of their ships, and driven about it / a ditch† (7.448). Thus, the shield displays an artistic representation of the Achaian camp. The contents of the vineyard foreshadow the fate of heroes, to which Achilleus will soon fall victim: â€Å"the grapes upon [the shield] were darkened / and the vines themselves stood out through poles of silver† (18.562). The clusters of grapes evoke the countless number of men who were earlier compared to â€Å"the swarms of clustering bees that issue forever / in fresh burstsShow MoreRelatedThe Epic Poem Of Troy1356 Words   |  6 Pagesthe history. Iliad portrays the siege of a dynamic ancient Greek epic poem of Troy, which is attributed to Homer. Adventurous and braveness with god-like qualities is used to describe the ancient classic Greek heroes in this poem. Iliad is now known as one of the aged surviving ancient Greek epic poems, which directly relates to the events near the end of Trojan War. Heroic figures are considered important in Greek history due to some qualities included; having one immortal parent, bornRead MoreA Dynamic Greek Epic Poem Iliad1354 Words   |  6 Pagestheir history. A dynamic Greek epic poem Iliad portrays the siege of Troy, attributed to Homer. Adventurous and braveness with god-like qualities describe an ancient classic Greek hero in this poem. Iliad is known now as one of the oldest in two surviving ancient Greek epic poems relating the events near the end of Trojan War. Hero’s are known as important figures in ancient Greek history and some of their qualities included; having one immortal parent, born into royalty, having an unusualRead MoreIliad - Self image1193 Words   |  5 Pagesï » ¿The Iliad Essay Prompt 1. Complete one take home essay. Provide textual evidence, specific lines and incidents from The Iliad that proves your thesis. You may also draw from The Odyssey. Use in text parenthetical documentation according to MLA standards. The style guide that many colleges use is DianaHacker.com. We will use this style guide for both MLA format and grammar and mechanics. If you have any questions about MLA format, refer to DianaHacker.com. This paper needs to read asRead MoreThe Iliad Vs. Troy1692 Words   |  7 PagesSlater Poem vs Film The Iliad vs â€Å"Troy† Achilles and Hector fighting with Athena and Apollo on both sides of the Warriors Introduction Written by the ancient Greek poet, Homer, The Iliad was an epic documented on the nearly 10-year long war between the Trojans and the Greeks. Although the epic had occurred in 1194–1184 BC, the epic was passed down through generations, orally, until Homer wrote the Iliad 500 years after the Trojan war in 750 BC. An adaptation of the Homers’ Iliad is David Benioff’sRead More Essay on Hector as the Ideal Homeric Man of Homers Iliad1358 Words   |  6 PagesHector as the Ideal Homeric Man of Homers Iliad        Ã‚  Ã‚   Homers Iliad enthralls readers with its’ valiant heroes who fight for the glory of Greece. The Iliad, however, is not just a story of war; it is also a story of individuals. Through the characters words and actions, Homer paints portraits of petulant Achilles and vain Agamemnon, doomed Paris and Helen, loyal Patroclus, tragic Priam, versatile Odysseus, and the whole cast of Gods. Ironically, the most complete character in the epic isRead MoreIliad Overview 1298 Words   |  6 Pagescan derive many causes from the poems. The Iliad of Homer, throughout which several things are, derived from the compilation of twenty-4 books, models the conventional of writing an epic; Homer units the usual through compiling two of basically essentially the most nicely-identified epics of the world. Homer now not solely has given two of the best epic poems however moreover has offered the proper insight of the Greek custom and civilization. The Iliad a lot notably conceived like a wrestle timeRead MoreVirgil s The Iliad And The Odyssey1403 Words   |  6 PagesVirgil s Aeneid takes a character form Homer’s Odyssey and constructs a life for him beyond Homer’s ideas. It is quite obvious that Virgil was heavily influenced by both Homer’s writings, The Iliad and the Odyssey. Both stories tell of parallel journeys home from Troy at the end of the Trojan War. Homer’s Odysseus is returning to Greece and the family he left behind ten years ago. Virgil’s Aeneas, in contrast has been given a direct command by the God, Mercury to create a new Empire. Both menRead MoreHomer s The Iliad And The Odyssey Essay1590 Words   |  7 Pagesstories of the world of the ancient Greeks, the Iliad and The Odyssey. However, none are certain of the time in which Homer lived. It is believed now that, if Homer was at all more than myth himself, he did not create the two stories, rather he organized or edited the poems in a written form (Bloom). Reg ardless of Homer’s involvement with the two stories, these ancient tales are distinct and characterized by the world in which they were conceived. The Iliad and The Odyssey both heavily draw inspirationRead MoreThe Epic Of Homer s The Iliad1297 Words   |  6 Pageswriting of Homer’s The Iliad. Fast-forward to 2004, the age of media, where the epic adventure war film Troy was released, starring none other than Brad Pitt as Achilles; so dreamy. Despite the fact these works of art were executed in different cultures thousands of years apart, as well as in different mediums, their characters greatly contrast each other. On the other hand, these different genres are comparable in the fact that Troy follows many of the important plot concepts as The Iliad. The filmingRead MoreThe Heroic Code Of Homer s Iliad1208 Words   |  5 Pages Homer’s Iliad depicts a tale of war that focuses on various human-centered themes that focus on describing the kind of people that ought to strive to become. This is characterized by the heroic code, which is the ultimate desire of each hero in the epic poem. The heroic code, according to Homer, focuses on the simple premise of a hero achieving honor, which is also understood to be peer-received esteem. Homer depicts this important value as what most humans would seek to achieve, because this important

Concept of Phytoremediation Free Essays

In recent years it has become clear that some environmental chemicals can cause risks to the developing embryo and fetus. Evaluating the developmental toxicity of environmental chemicals is now a prominent public health concern. The suspected association between TCE and congenital cardiac malformations warrants special attention because TCE is a common drinking water contaminant that is detected in water supplies throughout the U. We will write a custom essay sample on Concept of Phytoremediation or any similar topic only for you Order Now S. and the world. There is a lot of concern about the clean up of toxic pollutants from the environment. Traditional methods for cleaning up contaminated sites such as dig and haul, pump and treat, soil venting, air sparging and others are generally harmful to habitats. Some methods strip the soil of vital nutrients and microorganisms, so nothing can grow on the site, even if it has been decontaminated. Typically these mechanical methods are also very expensive. Most of the remediation technologies that are currently in use are very expensive, relatively inefficient and generate a lot of waste, to be disposed of. Phytoremediation is a novel, efficient, environmentally friendly, low-cost technology, which uses plants and trees to clean up soil and water contaminated with heavy metals and/or organic contaminants such as solvents, crude oil, polyaromatic hydrocarbons and other toxic compounds from contaminated environments. This technology is useful for soil and water remediation. Phytoremediation uses one basic concept: the plant takes the pollutant through the roots. The pollutant can be stored in the plant (phytoextraction), volatized by the plant (phytovolatization), metabolized by the plant (phytodegradation), or any combination of the above. Phytoextraction is the uptake and storage of pollutants in the plants stem or leaves. Some plants, called hyperaccumulators, draw pollutants through the roots. After the pollutants accumulate in the stem and leaves the plants are harvested. Then plants can be either burned or sold. Even if the plants cannot be used, incineration and disposal of the plants is still cheaper than traditional remediation methods. As a comparison, it is estimated a site containing 5000 tons of contaminated soil will produce only 20-30 tons of ash (Black, 1995). This method is particularly useful when remediating metals. Some metals are also being recycled from the ash. Phytovolatization is the uptake and vaporization of pollutants by a plant. This mechanism takes a solid or liquid contaminant and transforms it to an airborne vapor. The vapor can either be the pure pollutant, or the plant can metabolize the pollutant before it is vaporized, as in the case of mercury, lead and selenium (Boyajian and Carriera, 1997; Black, 1995; Wantanbe, 1997). Phytodegradation is plants metabolizing pollutants. After the contaminant has been drawn into the plant, it assimilates into plant tissue, where the plant then degrades the pollutant. This metabolization by plant-derived enzymes such as nitrosedictase, laccase, dehalogenase, and nitrilase assimilates into plant tissue, where the plant then degrades the pollutant. This metabolization by plant-derived enzymes such as nitroredictase, laccase, dehalogenase, and nitrilase, has yet to be fully documented, but has been demonstrated in field studies (Boyajian and Carriera, 1997). The daughter compounds can be either volatized or stored in the plant. If the daughter compounds are relatively benign, the plants can still be used in traditional applications. The most effective current phytoremediation sites in practice combine these three mechanisms to clean up a site. For example, poplar trees can accumulate, degrade and volatize the pollutants in the remediation of organics. Phytoremediation is more than just planting and letting the foliage grow; the site must be engineered to prevent erosion and flooding and maximize pollutant uptake. There are 3 main planting techniques for phytoremediation. 1.Growing plants on the land, like crops. This technique is most useful when the contaminant is within the plant root zone, typically 3 – 6 feet (Ecological Engineering, 1997), or the tree root zone, typically 10-15 feet. 2.Growing plants in water (aquaculture). Water from deeper aquifers can be pumped out of the ground and circulated through a â€Å"reactor† of plants and then used in an application where it is returned to the earth (e.g. irrigation) 3.Growing trees on the land and constructing wells through which tree roots can grow. This method can remediate deeper aquifers in-situ. The wells provide an artery for tree roots to grow toward the water and form a root system in the capillary fringe. The majority of current research in the phytoremediation field revolves around determining which plant works most efficiently in a given application. Not all plant species will metabolize, volatize, and/or accumulate pollutants in the same manner. The goal is to ascertain which plants are most effective at remediating a given pollutant. Research has yielded some general guidelines for groundwater phytoremediation plants. The plant must grow quickly and consume large quantities of water in a short time. A good plant would also be able to remediate more than one pollutant because pollution rarely occurs as a single compound. Poplars and cottonwoods are being studied extensively because they can used as much as 25 to 350 gallons of water per day, and they can remediate a wide variety of organic compounds, including LNAPL’s. Phytoremediation has been shown to work on metals and moderately hydrophobic compounds such as BTEX compounds, chlorinated solvents, ammunition wastes, and nitrogen compounds. Yellow poplars are generally favored by Environmental Scientists for use in phytoremediation at this time. They can grow up to 15 feet per year and absorb 25 gallons of water a day. They have an extensive root system, and are resistant to everything from gypsy moths to toxic wastes. Partial listing of current remediation possibilities. Plant Chemicals Clean-up numbers Pondweed TNT RDX 0.016-0.019 mg of TNT L per day Poplar Trees Atrazine 91% of the Atrazine taken up in 10 days Poplars Nitrates from fertilizers From 150 mg/L to 3 mg L in under 3yrs. Mustard Greens Lead 45% of the excess was removed Pennycress Zinc Cadmium 108 lb./acre per year 1.7 lb./acre per yr. Halophytes Salts reduced the salt levels in the soils by65% Advantages and Disadvantages to Phytoremediation: Advantages: ( www.rtdf.org/genlatst.htm) 1.Aesthetically pleasing and publicly accepted. 3.Works with metals and slightly hydrophobic compounds, including many organics. 4.Can stimulate bioremediation in the soil closely associated with the plant root. Plants can stimulate microorganisms through the release of nutrients and the transport of oxygen to their roots. 5.Relatively inexpensive – phytoremediation can cost as little as $10 – $100 per cubic yard whereas metal washing can cost $30 – $300 per cubic yard. 6.Even if the plants are contaminated and unusable, the resulting ash is approximately 20-30 tons per 5000 tons soil (Black, 1997). 7.Having ground cover on property reduces exposure risk to the community (i.e. lead). 8.Planting vegetation on a site also reduces erosion by wind and water. 9.Can leave usable topsoil intact with minimal environmental disturbance. 10.Generates recyclable metal rich plant residue. 11.Eliminates secondary air or water-borne wastes. 1.Can take many growing seasons to clean up a site. 2.Plants have short roots. They can clean up soil or groundwater near the surface in-situ, typically 3 – 6 feet (Ecological Engineering, 1997), but cannot remediate deep aquifers without further design work. 3.Trees have longer roots and can clean up slightly deeper contamination than plants, typically 10-15 feet, but cannot remediate deep aquifers without further design work . 4.Trees roots grow in the capillary fringe, but do not extend deep in to the aquifer. This makes remediating DNAPL’s in situ with plants and trees not recommended. 5.Plants that absorb toxic materials may contaminant the food chain. 6.Volatization of compounds may transform a groundwater pollution problem to an air pollution problem. 7.Returning the water to the earth after aquaculture must be permitted. 8.Less efficient for hydrophobic contaminants, which bind tightly to soil. 1) At the Naval Air Station Joint Reserve Base Fort Worth, phytoremediation is being used to clean up trichloroethylene (TCE) from a shallow, thin aerobic aquifer. Cottonwoods are being used, and after 1 year, the trees are beginning to show signs of taking the TCE out of the aquifer. (Betts, 1997) 2) At the Iowa Army Ammunitions Plant, phytoremediation is being used as a polishing treatment for explosive-contaminated soil and groundwater. The demonstration, which ended in March, 1997, used native aquatic plant and hybrid poplars to remediate the site where an estimated 1-5% of the original pollutants still remain. A full-scale project is estimated to reduce the contamination by an order of magnitude (Betts, 1997). 3) After investigating using phytoremediation on a site contaminated with hydrocarbons, the Alabama Department of Environmental Management granted a site. The site involved about 1500 cubic yards of soil, and began with approximately 70% of the baseline samples containing over 100 PPM of total petroleum hydrocarbon (TPH). After 1 year of vegetative cover, approximately 83% of the samples contained less than 10-PPM TPH. 4) Phytoremediation was used at the decommissioned Detroit Forge plant to clean up approximately 5,800 cubic yards of lead-impacted soil. Two plantings were completed, the first using sunflowers and the second mustard plants. Following treatment, analysis indicated soil lead concentrations were below the target clean-up criteria. The project resulted in an estimated saving of $1,100,000 over hazardous waste disposal. 5) Water, soil, and trees transpired gases were monitored to track the fate of TCE. About 2-4% of the TCE remained in the effluent as compared to 68% in a non-vegetated control group. The field trial demonstrated that over 95% of TCE were removed by planting trees and letting them grow. Additional studies showed that the trees did not release TCE into the air, as no measurable TCE was present in the air immediately surrounding the leaves (captured in small leaf bags and analyzed) or in the general atmosphere (using a laser technology that can see TCE in the air in the tree canopy). Phytoremediation is an aesthetically pleasing, solar-energy driven, and passive technique that can be used at sites with low to moderate levels of contamination. Phytoremediation is more than just planting and letting the foliage grow; the site must be engineered to prevent erosion and flooding and maximize pollutant uptake. Currently, the majority of research is concentrated on determining the best plant for the job, quantifying the mechanisms by which the plants convert pollutants, and determining which contaminants are amenable to phytoremediation. Polluted sites are being studied, and phytoremediation looks promising for a variety of contaminants. How to cite Concept of Phytoremediation, Essay examples

Magnetic Levitation Essays - Magnetic Levitation, Maglev, Levitation

Magnetic Levitation Magnetic Levitation (Maglev or Magnetic Suspension) is the method when an object is suspended with no other support besides its own magnetic field. This technology can support and move objects or vehicles, providing support without contact or friction, allowing for a fast and quite operation. The magnetic pressure is used to counteract effects of the gravitational and any other accelerations. There are some cases the lifting force provided by magnetic levitation, there are mechanical support bearings that provide some stability. This term is known as Pseudo-Levitation. When considering MAGLEV Train it is also important to think about the environmental impact the transportation network will make not only to global warming it makes by carbon dioxide emissions, but also noise pollution and land take damage that the environment will also have. The carbon dioxide emission from a magnetic levitation train is significantly less than traditional high speed express trains, due to the lower energy that is produced. Also consider that MAGLEV Trains may convert people from using everyday vehicles such as cars due to the amount of pollution that is being put out by them. Another important factor is the noise pollution even though it does not impact the global climate in the way that carbon dioxide emissions has. It does effect the local environment and those who live there. It can have effect on the local animal life altering or completely destroy a local ecosystem. But MAGLEV Trains do not have noise problems from the friction between the trolley and pantograph and doesnt have any noise problems from the rolling friction. The only noise that comes from a MAGLEV Train is from the aerodynamics. The last impact from a MAGLEV Train would be the land take. Which a normal rail system requires 14 meters wide track and a four lane freeway requires 30 meters wide. To construct a dual guide way for a MAGLEV Train would only require 12 meters. Which the destruction of natural animal habitats would be cut down from what a normal rail system and a freeway would cause and a less environmental impact. The Magnetic Levitation Train is a great idea and the technology behind it will defiantly will help out the environment and better reliable transportation for people worldwide. But there are always some things that might prevent this technology from advancing. There has to be someone constantly monitoring the separation between the vehicle and the guide way due to the unstable nature of the electromagnetic attraction. The EDS (electrodynamic suspension) has a strong magnetic field and it would make it impossible for individuals with pacemakers to board and travel. The train will need wheels or tracks when the vehicle is stopped. But as of 2008 there is new technology that is being develop but at this time has no commercial or full scale prototype. References: http://en.wikipedia.org/wiki/magnetic_levitation http://www.encyclopedia.com/topic/magnetic_levitation.aspx http://mosail.cnfolio.com/b101cw2008b227