Wednesday, January 29, 2020

The Journals of Lewis and Clark Essay Example for Free

The Journals of Lewis and Clark Essay The book â€Å"The Journals of Lewis and Clark,† as edited by John Bakeless and written by Meriwether Lewis and William Clark, chronicles the various events that Lewis and Clark experienced during the exploration of some Western territories. Lewis and Clark both wrote down notes through their journals about their various experiences during their journey. The first journal entry, dated May 13, 1804, was written by Clark upon his correspondence with Lewis to join the expedition to explore some territories in the West. Clark was able to contribute to the needed provisions for the exploration. The succeeding journal entries were both written by Lewis and Clark, which detailed daily weather conditions, problems or difficulties they have encountered through their transport in a barge, relations and discussions with the commanding officer and his men, the places they have passed, the food they ate, the geographical and topographical details and conditions of the places they have seen and camped in, and so on. (Bakeless, Lewis, Clark, 2002) Aside from the journals written by Lewis and Clark, Bakeless has included numerous notes to explicate further some of the details in the journals that might be foreign to the readers. Since the book was a reissue or a reprint of the original manuscripts, Bakeless made it a point that there would be new information or details, which would allow the readers to understand deeply the relevance or significance of reading about Lewis and Clarks experiences during the expedition. For instance, Bakeless has included notes on the meaning of some of the abbreviated words written by Lewis and Clark, such as â€Å"Starboard† for the â€Å"S. S. † abbreviations, â€Å"Larboard† for â€Å"L. S. ,† and so on. (Bakeless, Lewis, Clark, 2002) Furthermore, some of the words and details found in the original transcript of the journals of Lewis and Clark during their expedition were wearisome, uninteresting, and sometimes difficult to understand. In this reprint of the original transcripts, Bakeless has successfully edited out some of the details and changed some of the words to provide a clear and concise transcript on the expedition of Lewis and Clark. With regards to the embedded messages in the book based on the statements of the author, Bakeless sought to provide the readers with an understandable and comprehensible text that the readers would be able to relate to as opposed to earlier prints of the original transcripts that were uninteresting and incomprehensible. Although there was a need to simplify or abridge the original transcripts of Lewis and Clark’s journals, Bakeless believed that there was also a similar need to preserve the information and thoughts written by Lewis and Clark in their journals in order to provide a vivid or lucid picture on what both explorers had to go through in order to explore the unchartered territories of the West and be able to contribute to social and cultural development. This was Bakeless’ response to the numerous attempts to recreate the expedition of Lewis and Clark through other books and documentaries, such as â€Å"Lewis Clark: The Great Journey West,† (Meehan, Miller, Truitt, Neibaur, 2002) which seemed to him as lacking in comprehensive and relevant information. (Bakeless, Lewis, Clark, 2002) With Lewis and Clark, both explorers understood the need to take down notes during the expedition as a means of reference as contributions to history and archaeology, and human knowledge as a whole, and as notes that shall allow them to remember the events that happen to substantiate how they were able to accomplish the goals and objectives of the expedition in relation to the Louisiana Purchase under the supervision and control of the Monroe Doctrine. The Monroe Doctrine was a political maneuver by James Monroe for the purpose of acquiring foreign territories by strengthening international relations with other nations. (Leavitt, 1863) Since the book contains journals written personally by Lewis and Clark throughout their expedition, judging the existence of biased opinions in the entries is difficult to determine. The entries were retelling of the various events experienced by Lewis and Clark during their expedition. Their narratives and thoughts were based on their personal points of views, perspectives, and interpretations, but they were also based on what they have seen through their observations. Furthermore, Lewis and Clark would have written the journal as a means to present a clear, descriptive, and somewhat scientific account of the things, people, places, situations, etc. that they have encountered during the expedition to the administrator or director of the expedition upon their arrival. Therefore, the thoughts, ideas, and opinions written by Lewis and Clark in the book were influenced by both their own perspectives and personal interpretations, as well as the goals and objectives of the expedition to gather comprehensive and detailed information on the unchartered territories in the West, which was later purchased by America from France (Leavitt, 1863). On the other hand, the ideas included by Bakeless in the book were unbiased or impartial since they were substantiations or explications of the information and details, written in the journal entries of Lewis and Clark, based on further research on the Lewis and Clark expedition including perhaps the documentary previously mentioned, â€Å"Lewis and Clark: The Great Journey West† (Meehan, Miller, Truitt, Neibaur, 2002) and further readings on the Louisiana Purchase and the Monroe Doctrine. As previously mentioned, Bakeless was able to provide unbiased, reliable, and valid information in his inclusion of notes and substantiations on the information and ideas presented by Lewis and Clark in their journals by utilizing other books, research studies, and reputable online sites, which presented factual and comprehensive information on the expedition of Lewis and Clark. Most of the references used were books written by other authors on the Lewis and Clark expedition, the Monroe Doctrine, and other scientific substantiations of what Lewis and Clark saw in their journey. Bakeless was able to use relevant and valid information in order to provide the readers with complete information on the journey of Lewis and Clark. Bakeless’ contributions to the journals of Lewis and Clark was extremely important in helping readers understand what both explorers wrote and grasping the significance of the expedition through Bakeless’ inclusion of information regarding the Louisiana Purchase and the Monroe Doctrine, as well as the implications of what Lewis and Clark discovered and the results or outcomes of these discoveries to the history of mankind. By and large, the contributions of Bakeless to the reissue of the journals of Lewis and Clark were extremely important. Bakeless’ arguments on the necessity to provide a piece of information that comes directly from Lewis and Clark themselves, consequently providing readers with a vivid picture of the entire expedition, without extracting the essence of the journal entries, have made the book an important reference for readers who would want to learn about Lewis and Clark’s journey in the West. The book as edited by Bakeless and written by Lewis and Clark is a must read for everyone, especially those in search of information on the Monroe Doctrine, Louisiana Purchase, Lewis and Clark, and the expedition itself, as well as those who are looking for a book that portrays a factual and scientific adventure into the once unchartered territories of the United States of America. References Bakeless, J. , Lewis, M. Clark, W. (2002). The Journals of Lewis and Clark. New York, NY: Signet Classic. Leavitt, J. 1863. The Monroe Doctrine. Harvard University. Meehan,E. , Miller, J. T. , Truitt, L. (Producer) Neibaur, B. (Director). (2002). Lewis Clark: Great Journey West [Documentary]. United States: National Geographic Television.

Tuesday, January 21, 2020

Classification Essay - Types of Gas Pumpers :: Classification Essays

Types of Gas Pumpers    There are many types of people who purchase gasoline, but three types are easy to spot. All three have an obvious physical appearance which sets them apart from other gas purchasers. Each also has a distinctive pumping technique and freely vocalizes his opinion. Finally, each type has a particular way of annoying every other patron at the same location.    The first type of gas purchaser is Leisure Lou. He can be identified immediately by his appearance. He drives a station wagon with wooden side panels and a bumper sticker that tells the world that he is retired. His Hawaiian print shirt captures everyone's attention. He wears Bermuda shorts and black socks with sandals. On his head sits a fly fisherman's hat which is his obvious display of a continuous state of leisure. His pumping technique also sets him apart from the normal crowd. When he parks his car, he stops at the first pump, preventing the use of the pump in front of him. He always pays for his gas in advance, so that the attendant can preset the pump and he will not have to worry about stopping the pump himself. He activates the pump before opening the access door and unscrewing the tank lid. He tucks the hose under his elbow and spills gas on his hip while opening the tank. As Leisure Lou leans against the side of his car, he pumps his gas absent-mindedly, conf ident that the pump will stop before gas pours onto the ground. Once the pump stops, he replaces the hose and screws on the tank lid but forgets to close the access door. Leisure Lou even vocalizes his not-a-care-in-the-world attitude. He whistles some melodic tune from The Sound of Music while pumping his gas. When inside the convenience store, he tells everyone how wonderful retirement is. But Leisure Lou can be a tremendous annoyance. He blocks the use of two pumps while he performs a number of time-consuming tasks. First he browses through the store with no intention of making a purchase. Then he washes his car's windshield. Next he visits the restroom to wash his hands and look at the stain on his hip. Last, he walks his dog around the small patches of grass that serve as landscaping.

Monday, January 13, 2020

A Comparison Of Wastewater Treatment Methods Environmental Sciences Essay

Water constitutes over 70 % of the Earths surface and is a really of import resource for all people and the environment. If H2O gets polluted it cant be the elixr of life any longer to aquatic and to the wild life that depend on it. Rivers and watercourses polluted with chemical contaminations account as one of the most important environmental jobs. Water pollution is fundamentally a human fallacy.This used H2O is called â€Å" effluent † . Turning population and rapid industrialization has increased the volume of effluent manifold finally deteriorating the fresh H2O resources and environing environment due to inappropriate management.It is 99.94 per centum H2O, with merely 0.06 per centum of the effluent being dissolved and suspended solid stuff. Infiltration/inflow: immaterial H2O that enters the cloaca system through indirect and direct agencies such as through leaking articulations, clefts, or porous walls.Inflow is storm H2O that enters the cloaca system from storm drain connexions, roof headings, foundation and cellar drains or through manhole screens ; Features: Fresh, aerophilic, domestic H2O has been said to hold the smell of kerosine or newly turned Earth. Aged, infected sewerage is well more violative to the olfactory nerves.The characteristic rotten-egg smell of H sulphide and the mercaptans is declarative of infected sewage.Fresh sewerage is typically gray in colour.septic sewerage is black.The category of chemical compounds found in effluent are illimitable and so they are better known by the name of the trial used to mensurate them which are BOD5 and COD test.Industrial procedures generate a broad assortment of effluent pollutants.The features and degrees of pollutants vary significantly from industry to industry. Waste-water quality is assessed based on physical, chemical, and biological features. Physical parametric quantities include coloring materials, smell, temperature, and turbidness. Insoluble contents such as solids, oil and lubricating oil, are to be considered under this category.. Solids may be farther subdivided into suspended and dissolved solids every bit good as organic ( volatile ) and inorganic ( fixed ) fractions. Chemical factors to be considered are: biochemical O demand ( BOD ) , chemical O demand ( COD ) , entire organic C ( TOC ) , and entire O demand ( TOD ) . Inorganic chemical parametric quantities include salt, hardness, pH, sourness and alkalinity, every bit good as concentrations of ionised metals such as Fe and manganese, and anionic entities such as chlorides, sulphates, sulphides, nitrates and phosphates. Bacteriological parametric quantities include coliforms, fecal coliforms, specific pathogens, and viruses. Both components and concentrations vary with clip a nd local conditions.VARYING FLOW Issue:Waste-water flow fluctuates with fluctuations in H2O use, which is affected by a battalion of factors including clime, community size, life criterions, dependableness and quality of H2O supply, H2O preservation demands or patterns, and the extent of metre services, in add-on to the grade of industrialization, cost of H2O and supply force per unit area. Wide fluctuations in effluent flow rates may therefore be expected to happen within a community Effluent does non flux into a municipal effluent intervention works at a changeless rate. The flow rate varies from hr to hr. In most metropoliss, the form of day-to-day activities sets the form of sewerage flow and strength. Above-average sewerage flows and strength occur in mid-morning.The invariably altering sum and strength of effluent to be treated makes efficient procedure operation difficult.Also, many intervention units must be designed for the maximal flow conditions encountered which really consequences in their being oversized for mean conditions.Flow equalisation is non a intervention procedure in itself, but a technique that can be used to better the effectivity of both secondary and advanced effluent intervention processes.The intent of flow equalisation is to stifle the fluctuations so that the effluent can be treated at a about changeless flow rate.Flow equalisation can significantly better the public presentation of an bing works and increase its utile capacity.In ne w workss, flow equalisation can cut down the size and cost of the intervention units. Wastewater intervention options may be classified into groups of procedures harmonizing to the map they perform and their complexness: The basic methods of handling municipal effluent autumn into the undermentioned phases, which is shown in the signifier of block flow: The procedure flow diagram of a basic effluent intervention procedure is as follows:Conventional WASTEWATER TREATMENT PROCESSES:General footings used to depict different grades of intervention in order of increasing intervention degree are preliminary, primary, secondary and third and/or advanced effluent intervention.Preliminary intervention:Preliminary intervention prepares waste-water influent for farther intervention by cut downing or extinguishing non-favourable waste-water features that might otherwise impede operation or overly increase care of downstream procedures and equipment. These features include big solids and shreds, scratchy grit, smells, and, in certain instances, intolerably high extremum hydraulic or organic burdens. Preliminary intervention processes consist of physical unit operations, viz. testing and comminution for the remotion of dust and shreds, grit remotion for the riddance of coarse suspended affair, and floatation for the remotion of oil and lubricating oil. Other preliminary intervention operations include flow equalization, septage handling, and odour control methods.Primary Treatment:Primary intervention is designed to take organic and inorganic solids by the physical procedures of deposit and flotation. About 30 – 40 % of the pollutants are removed from the waste Waterss. Primary intervention acts as a precursor for secondary intervention.Secondary intervention:The intent of secondary intervention is the remotion of soluble and colloidal organics and suspended solids that have escaped the primary intervention. This is typically done through biological procedures, viz. intervention by activated sludge, fixed-film reactors, or laguna systems and deposit. Chemical intervention utilizes a coagulator such as Fe or aluminium.Then solid organic affair and P are precipitated into larger pieces which are separated as sludge. Suspended solids removal through chemical intervention involves a series of three unit operations: rapid commixture, flocculation and settling..A once-through chemical intervention system is shown below the tabular array. Advantage: greater remotion efficiency, the feasibleness of utilizing higher overflow rates, and more consistent public presentation. On the other manus, curdling consequences in a larger mass of primary sludge that is frequently more hard to inspissate and dewater. It besides entails higher operational costs and demands greater attending on the portion of the operator.Adsorption WITH ACTIVATED CARBONAdsorption is the procedure of roll uping soluble substances within a solution on a suited interface. In waste-water intervention, surface assimilation with activated carbon-a solid interface-usually follows normal biological intervention, and is aimed at taking a part of the staying dissolved organic matter.Particulate affair nowadays in the H2O may besides be removed.. The two most common types of activated C are farinaceous activated C ( GAC ) , which has a diameter greater than 0.1 millimeter, and powdered activated C ( PAC ) , which has a diameter of less than 200 mesh. A schematic of an activated C contactor is shown below the tabular array. Advantage: Exploitation powdered activated C in concurrence with traditional biological intervention provides first-class outflowing bio-assay consequences, provides for toxicity control within the bioreactor, and proA ­motes higher nitrification efficiency than that of a conventional activated-sludge system.CWAOOxidation is a procedure widely used for effluent intervention by which the pollutants are removed or converted into more biodegradable substances. Catalytic moisture air oxidization ( CWAO ) is a liquid stage reaction between organic stuff in H2O and O. CWAO is an attractive intervention for waste watercourses, which are excessively dilute to incinerate and excessively concentrated for biological intervention. It can be defined as the oxidization of organic and inorganic substances in an aqueous solution or suspension by agencies of O or air at elevated temperatures and force per unit areas. It is besides called flameless burning Typical conditions for CWAO scope from 125 to 300a- ¦C and at force per unit areas from 0.5 to 20 MPa. Residence times may alter from 15 to 120 min, and the chemical O demand ( COD ) remotion may typically be about 75-90 % .DECHLORINATIONDechlorination is the remotion of free and entire combined Cl residue from chlorinated effluent wastewater before its reuse or discharge to having Waterss. Chlorine compounds react with many organic compounds in the wastewater to bring forth unsought toxic compounds that cause long-run inauspicious impacts on the H2O environment and potentially toxic effects on aquatic microorganisms. Beginning: Adapted from Liu and Liptak, Wastewater Treatment ACTIVATED CARBON CONTACTOR: Beginning: Metcalf and Eddy, Wastewater Engineering, 3rd edition.Comparison OF CHEMICAL AND BIOLOGICAL PHOSPHORUS REMOVAL IN WASTEWATER:Factor BIOLOGICAL PHOSPHORUS REMOVAL CHEMICAL PHOSPHORUS REMOVAL EFFLUENT QUALITY Biological P remotion was observed to make a lower limit of 0.4mg/l in the wastewater Chemical P remotion was observed to make whatever outflowing quality demand as more and more chemicals are dosed SLUDGE PRODUCTION ( The production of sludge is considered as a really of import factor in the pick of a effluent intervention method presents ) Sludge production is less compared to chemical method. Chemical P remotion produces more sludge, approximately 25 % more sludge than by biological agencies. NEEDED PLANT VOLUME As the volume of the anaerobiotic zone of the Bio -P procedure is reduced, there are alterations in the outflowing quality and the efficiency of P remotion is reduced The decrease of the volume of the anaerobiotic zone has no effects on the chemical P remotion Consumption OF ENERGY It was possible to cut down the capacity of the aeration device down to 1000kg O2/hr and still hold good intervention consequences in footings of COD and nitrogen remotion in the Bio-P process.Beyond this bound ( less than 100kg O2/hr ) COD and the Nitrogen in the wastewater are excessively high. Same sum of COD and Nitrogen in the wastewater is observed at 500kgO2/hr.So chemical method is more immune to decrease in aeration capacity than the Bio-P procedure by atleast 500kgO2/hr aeration capacity. ECONOMIC COST OF TREATMENT ) Annual cost for sludge disposal is saved by Bio-P compared to chemical method. The cost of buying chemicals is high and no nest eggs with respect to sludge disposal compared to Bio-P remotion. The economic cost of intervention has been evaluated based on a summing up of the single costs associated with sludge production, cost of chemicals, energy cost and costs associated to volume nest eggs. The purpose of an economic cost is non to reflect the exact fiscal cost but an estimation that could be used as a guideline for the building of a new works or for comparing of the two procedures. Discussion: Chemical VS BIOLOGICAL TREATMENT: Biological procedure removes solid organic affair and dissolved organic affair. The chemical procedure removes solid organic affair and phosphorus.Chemical precipitation cleans the H2O really quickly, say in less than 15mins after the induction of the procedure, we have clean H2O, whereas with biological intervention it will take 3 hour to accomplish the same.Biological procedure stopping points relatively long clip and is dependent on the effectivity of the microorganisms.Chemical and Biological interventions work in different ways and accomplish different results.We have to find the major causes of O lack in Waterss and choose the intervention in conformity with local environmental requirements.Purification in itself demands resources.Biological intervention requires a long abode clip and energy is consumed when air is blown into the sewerage water.Consequently the Biological works is large and more complex.The micro-organisms have to be adapted to the pollution which sensitises th e whole system.Chemical purification requires add-on of coagulators which is done in a little pool and at lower energy consumption.The entire energy used for chemical intervention is merely 15 % of that required for biological intervention, even if the energy used for production and distribution of coagulators is included.In footings of the entire ecological emphasis, the chemical procedure is favoured.Life rhythm appraisals show the biological procedure to be a larger consumer of resources and therefore it is more negative interms of its full environmental impact.If there is no demand to take dissolved organic affair a biological procedure could make greater ecological harm than chemical procedure due to the entire energy ingestion and the natural stuffs used when building the works. The environment makes demands on the purification procedure and if advanced purification is necessary both biological and chemical methods must be used..In Norway, the bing chemical works built wholly within bedrock was extended with the N remotion system due to the increased food load.With the alone combination of chemical and biological procedures this works occupies less than half the volume of the conventional biological procedure. CONCLUSION AND RECOMMENDATIONS: Effective effluent aggregation and intervention are of great importance from the point of view of both environmental and public wellness. Any effluent intervention works needs important investing and Operation Maintenance and control, and hence any determination to implement such a installation should be carefully considered. It is non a good thought to reason that any intervention method is better than the other.Each one has its ain advantages and disadvantages.The pick of which method is to be used will depend on the society, the discharge demands and the costs they are ready to incur.As a concluding decision, the winning construct these yearss should non be based on which procedure should be used in isolation to the other, but instead utilizing the advantages of both processes together to obtain best consequences, while at the same clip understating their disadvantages. Extensive research activity in this field has led to important betterment and variegation in the procedures and methods used for waste-water intervention and sludge direction. Public wellness jeopardies are frequently associated with waste-water reuse, and accordingly it is indispensable to circulate cognition and information about the danger of natural waste-water reuse and issue safe reuse guidelines.

Sunday, January 5, 2020

Book Review The Vegetarian by Han Kang - Free Essay Example

Sample details Pages: 3 Words: 753 Downloads: 10 Date added: 2019/06/24 Category Health Essay Level High school Tags: Vegetarian Essay Did you like this example? While reading this novel, we learn that Yeong-hye decides to become a vegetarian after seeing the brutal torment that animals go through in a recurring nightmare. The torment was so gruesome that it sparked a difference in her behavior and character. She began to change her eating habit because of it. Don’t waste time! Our writers will create an original "Book Review: The Vegetarian by Han Kang" essay for you Create order Yells and howls, threaded together layer upon layer, are enmeshed to form that lump. Because of meat. I ate too much meat. The lives of the animals I ate have all lodged there. Blood and flesh, all those butchered bodies are scattered in every nook and cranny, and though the physical remnants were excreted, their lives still stick stubbornly to my insides. When she started to get rid of all of the meat in the house, her husband just took it as a phase but soon he and the father began to talk down on her which couldve also caused her mind to slowly drift away. Mental abuse is just as hurtful as physical abuse and Yeong-hye had endure that from her own husband. My word, so youre one of those vegetarians, are you my boss asked (pg. 23). Due to Yeong-hyes father using physical force to shove meat down her throat, she attempted suicide. I believe this was the first red flag that wouldve alerted her family that Yeong-hye needed to see a psychiatrist. Instead of her husband trying to get Yeong-hye help, he leaves her and your love one abandoning you can cause anyone to fall into a depressing state of mind. Yeong-hye started out being just depressed but I believe it escalated deeper. In the second half of the novel, Yeong-hye demonstrates her mental illness through her behavior. Three years later, Yeong-hye now refuses all and any food. Now, Yeong-hyes sister is the only person that hasnt abandoned her but her husband begins take an interest in Yeong-hye. She allows him to do what he wants with her and she doesnt stop him. I believe that something in her knew she was doing something wrong but I believe mentally she just didnt know how to speak up and say no. Her depression could have made her want the sexual attention again since she was no longer married so she gave in to him. Now Yeong-hye is put in an inpatient mental facility, placed there by her sister to hopefully get some medical help and advice. Yeong-hye starts to believe that she is a tree by doing handstands. Look, sister, Im doing a handstand; leaves are growing out of my body, roots are sprouting out of my handsthey delve down into the earth. Endlessly, endlesslyyes, I spread my legs because I wanted flowers to bloom from my crotch; I spread them wide I dont believe Yeong-hye knew what exactly she wanted in life but she needed something to up to or be like maybe .That could be a reason why she wanted people to see her as a tree instead of a human. I dont believe that vegetarianism is the cause for her mental illness but just maybe a lifelong endurance of pain caused by her family, made her slowly begin to lose her mind and the dreams of the animals just sparked it. The only person that really cared for Yeong-hye was her sister. In-hye was proud of herself for wanting to change her lifestyle but she soon realized that she was spiraling out of control and went and found her help immediately. Everything would be fine as long as she just kept going, just carried on with her life as she always had done. In any case there was no other way (p. 169). In the end, Yeong just wanted to be free of the pain and have her life relived in another way.In-hye understood that her sister was no longer the same and that she needed to let go. The feeling that she had never really lived in this world caught her by surprise. It was a fact. She had never lived. Even as a child, as far back as she could remember, she had done nothing but endure. She h ad believed in her own inherent goodness, her humanity, and lived accordingly, never causing anyone harm. Her devotion to doing things the right way had been unflagging, all her successes had depended on it, and she would have gone on like that indefinitely. She didnt understand why, but faced with those decaying buildings and straggling grasses, she was nothing but a child who had never lived.