Saturday, February 8, 2020

Observe particles by using Scanning Electron Microscope (SEM), Energy Essay

Observe particles by using Scanning Electron Microscope (SEM), Energy Dispersive X-ray SEM and Transmission Electron Microscopy - Essay Example Analysis shows that even though the particle size range is from 10 ?m to 160 ?m; however most of the particles are confined in three size ranges: 10 - 20 ?m, 50 – 70 ?m and 110 – 120 ?m. SEM-EDS analysis shows that the bright particle in the silica sample are yttrium oxide. TEM images show two kinds of shape – spherical and cylindrical for TiO2 and faceted equiaxed morphology for Fe2O3 particles. The detailed results and analysis is presented in this report. Introduction Powders play very important role in materials science and industry so much so that one stream of metallurgy is known as powder metallurgy. Besides, ceramics engineering revolved around powders. Consolidation of many materials becomes possible only through powder metallurgy route, which involves filling, compaction and sintering of powders. All these processes depend heavily on powder characteristics like shape, size, size distribution etc. to name a few. Experimental determination of these attrib utes of powder is very important. Some of these attributes like size and size distribution can be determined by indirect methods like laser particle size analysis. However, only a direct method like microscopy gives the confidence in the result. Beside, many attributes like shape and chemistry can be determined only by advance electron microscopy. Electron microscopy involves obtaining high magnification images of the samples using focused beam of accelerated electrons as probe and then forming images by collecting the different signals like backscattered electrons, secondary electrons, transmitted electrons etc [1]. As wavelength of accelerated electrons is much smaller as compared to light; therefore, it can be focused to much finer spots and much higher resolution and magnification is possible in case of electron microscopes as compared to the same in case of optical microscopes. Besides, many signals generated by electron – matter interaction like auger electron, characte ristic X-rays etc. contain information about chemistry of the matter and these signals can be used to determine chemistry of the sample using different detectors like Wavelength Dispersive Spectrometer (WDS), Energy Dispersive Spectrometer etc. Accordingly there are different instruments like Scanning Electron Microscope (SEM), SEM-EDS, Electron Probe Microanalyser (EPMA), Transmission Electron Microscope (TEM), High Resolution Transmission Electron Microscope (HRTEM) etc. A basic description of SEM, SEM-EDS and TEM which were used in these experiments is provided in the subsequent sections. Scanning Electron Microscope (SEM) [2]: As suggested by the name, in this microscope a focused beam of electron is scanned over the sample in a raster using scanning coils. This leads to generation of signals like secondary electrons and backscattered electrons; which are used for image formation on a CRT screen. The image is formed in a pixel by pixel manner and therefore, the raster size corre sponds to the CRT screen size magnification is arrived by dividing the CRT length by the raster length. The magnification can thus be increased gradually by reducing the rater size on the sample as the CRT size is fixed. An SEM consists of an electron source or an electron gun, apertures to block unwanted beam, electromagnetic lenses to focus the beam, different detectors like secondary electron detector and backscattered electron detector for image formati

Wednesday, January 29, 2020

Environmental Development through Role Play in Schools Essay Example for Free

Environmental Development through Role Play in Schools Essay 1. Executive Summary In this proposal the Environmental Protection Group (EPG) requests funding for its Environmental Development Project through Role Play in Schools. The project’s goal is to contribute to the reduction of environmental devastation and destruction through the implementation of role-play strategies that highlight concomitant preventive and behaviour change interventions. With this support, EPG will emphasize on increasing awareness practices and measurement requirements and work in close collaboration with partners toward the reduction of the burden of environmental devastation. EPG is requesting Kyats 16,000,000 to support its efforts to combat human effects on our environment and its resultant environmental destruction among the currently unnoticed affected areas of Myanmar. EPG will work in collaboration with the â€Å"Save Earth†, community-based organizations and International NGOs, promoting positive behaviour change through the Environmental protection Role play in schools project. 2. Environmental Issues in Myanmar While environmental protection projects and environment activists are endeavoring to bring forth harmony amongst our environment and our society, Myanmar has rather a slow rate of environmental protection measurements. Citizens should be warned of the effects of their behavior on the environment and the resultant destruction of the environment. However, since the population of working people will not be able to contribute much to our project, we have set our targets on children. Through role play on environmental devastation, we will raise children’s awareness of the environment. Despite learning about the deterioration of the environment only when they get older, making children contribute to the environment is claimed to have much effect both on the children and on the environment. While the environment will get greener with children’s interest in it, the children, on the other hand, will also learn the advantages and disadvantages of their behavior towards the Earth. This way, the science of the Earth and the art of individual responsibility will be learned by the children at the same time, as well as benefit in the eco-friendliness of men and our Earth. 3. Project Objectives to raise environmental awareness through community participation approach to get ideas from the community to promote community’s critical thinking of the environment 4. Our Vision Statement Communities in which people respect the environment, develop the sustainable eco-friendly lifestyle and share the environmental knowledge and practice from generation to generation. 5. The weaknesses of our community Lack of environmental awareness Weakness in practicing conservation Ignorance of the significance of the natural environment 6. Skills and Qualities Patience Motivation in community participation Theatre ability Persuasiveness Ability to understand the reality of the community Scientific Knowledge

Tuesday, January 21, 2020

Ambition In Macbeth Essay -- essays research papers

In Shakespearean times, ambition was seen to be wrong, as it went against the natural order. You had to accept yourself for who you were. People were not encouraged to better themselves. In act I scene I, the three witches plan to meet Macbeth upon a heath. They announce the major theme of the play: appearances can be deceptive."Fair is foul, and foul is fair" line 10. Macbeth in Act I echoes this in Scene three,"So foul and fair a day I have not seen"These contradictions introduce a feeling of opposing forces at war. They are a symbol of the struggles that take place in the play. This could tie in with the scene in which Lady Macbeth tells her husband to "..Look like the innocent flower, but be the serpent under 't."At the beginning of scene three, the wit...

Monday, January 13, 2020

Drug Addiction and Thesis Statement

Drugs addiction is a problem faced by many people of the world, it is a topic that interests many writers, and they wish to write an essay on drugs for this topic. Drugs are very harmful and keep the capability of dragging an individual towards death and destruction. People all over the world want to eradicate the adverse situation of drug addiction from this world and this is the reason why they are busy in writing essays on drugs.Essays on drugs are of many types such as war on drugs essay, essay on performance enhancing drugs in sports, essay on drug abuse, essay on illegal drugs, essay on drug addiction, essay on drug use, essay on drugs and alcohol and essay on drug testing, etc. The essays on drugs should be initiated by bringing in the information related to the topic of the essay on drug. You should know what drugs are.In an essay on drugs, you will have to write about drugs, their affects and the reasons due to which people use them, you have to include the information about why the drugs are so famous and how harmful are they. A persuasive essay on drugs will be one, which will be according to the topic of the essay on drugs. It should have a full-fledged introduction, which should introduce the topic completely. The introduction should also have a thesis statement that should be the main idea of the essay on drugs.A thesis statement should be based on the essay question to which your essay on drugs is an answer. A thesis statement of an essay on drugs can be one sentence or more than one sentence but it is suggested that it should be only one sentence. Essays on drug abuse or essays on drug addiction should be written by arranging the ideas in a format that should be understandable. You should divide your ideas in different paragraphs for an essay on drug abuse or for war on drugs essay.One paragraph should contain one idea and should not go towards a second idea, as it will reduce the comprehensiveness of the paragraph of essay about drugs. The essa ys on drugs should be written by researching the topic of drugs thoroughly so that the writer can depict information knowledgably. If you feel disturbed by an exercise of writing an essay on drugs, you can also get plagiarism free essays on drugs from custom writing websites, which are there for your assistance and support in terms of writing essays on drugs.

Sunday, January 5, 2020

Supplemental Nutrition Assistance Program, Food...

Supplemental Nutrition Assistance Program (SNAP), formerly known as food stamps, is a government program to help its participants buy food. The amount of money issued each month is calculated by income, number of people in household, and other factors. SNAP benefits create a way for people to eat. But it also helps people in more ways than just filling their stomachs. And yet, there are those who do not see the benefits in continuing this program. If you have never experienced having to use government benefits just to survive day to day, that view is your luxury. Food is important to your health, and when you are not getting the proper nutrients, your health suffers. â€Å"The Supplemental Nutrition Assistance Program, Food Insecurity,†¦show more content†¦Ã¢â‚¬Å"†¦among the food-insecure population, SNAP participation appears to buffer against poor dietary quality and obesity†¦Ã¢â‚¬  Their research highlights how SNAP can potentially play into helping at risk people obtain a healthy diet and weight status. After being on and off SNAP for the majority of my life, my physical health was better on benefits, rather than off. I was able to lose weight once I had access to healthy foods, rather than cheap and processed (which is what my mother could afford without benefits). Other health benefits came from being on SNAP. We have very poor immune systems in my family, and that was alleviated somewhat when the stress of not having enough food was diminished, as well as having access to healthier food. Medical conditions that were exacerbated by poor eating and stress are very common. Thyroid problems and half of my family having intestinal disorders created even more burdens. As well as the majority of my family having eating disorders, like anorexia/ bulimia and food maintenance disorder (from not having food and having to be very strict with food for so long). Nguyen, Shuval Bertmann, and Yaroch also make a point that certain factors should not be separate, but rather seen as having interact ion. â€Å"SNAP, food insecurity, obesity, dietary patterns, food availability and access, and other factors should be considered together rather than separately, because these factors may interact in a complex relationship.†Show MoreRelatedHouse Of Representatives Member, Phil Roe, Introduced A1114 Words   |  5 Pagesamend the Food and Nutrition Act of 2008. The Healthy Food Choices Act of 2016 would require the participants of the Supplemental Nutrition Assistance Program to use their benefits to purchase items that meet the nutrition requirement proposed by the Special Supplemental Nutrition Program for Women, Infants and Children or WIC program (Roe, 2016). According to the United States Department of Agriculture (2016), there were 45,766,672 people participated in the Supplemental Nutrition Assistance ProgramRead MoreFood Insecurity And Its Effects On Health1258 Words   |  6 PagesFood insecurity is defined as â€Å"limited or uncertain availability of nutritional ly adequate and safe foods or limited or uncertain ability to acquire acceptable foods in socially acceptable ways.†1 Food insecurity data found that in America, 12.7% of households were food insecure at some point and 5% of households had very low food security in 2015.2 The prevalence of food insecurity in Ohio was greater than the national average in 2015, with 16.1% of households reporting food insecurity.2 TheRead MoreFood Insecurity : The Lack Of Access For Enough Food For Adequate Nutrition1806 Words   |  8 PagesErrington 08-12-2015 GPH 722 Research Paper What is it? Food insecurity is defined as â€Å"the lack of access to enough food to ensure adequate nutrition.†1 The Department of Agriculture’s Economic Research Service (ERS) reported that 14.6% of US households were food insecure during at least some portion of 2008 (up 11.1% from 2007), the highest levels recorded since monitoring began in 1995.2 Food insecurity is a concern of under consumption and obesity is a disease of over consumption, yet both outcomesRead MoreHealth Knowledge And Positive Dietary Change Essay1974 Words   |  8 PagesIntroduction: For limited income and limited education individuals, low-nutrition health literacy affects the understanding of and adoption of nutrition recommendations. That causes implications on health outcomes of families. For practitioners, understanding the relationship between health knowledge and positive dietary change will enable health educators to be involved in the development and delivery of evidence-based strategies that meet the needs of low-health-literacy. A review of recent research

Saturday, December 28, 2019

Columbus discovery of the Americas was very profitable for...

Columbus discovery of the Americas was very profitable for the Spanish Empire, but devastating to the Native Americans already living there for thousands of years. This is conveyed in â€Å"a Short Account of the Destruction of the Indies† by Bartolomà © de Las Casas. The main goal of Las Casas was to inform the Spanish King about the atrocities committed by the Conquistadors to the Indian people and their land. From the beginning the rules were that the Spanish were to convert the Indians to Christianity and help them achieve heaven. On the other hand, the Conquistadors did not follow the rules and instead murdered millions of Natives for their riches. Unfortunately to the Indians, the arrival of the Spaniards brought them total destruction. The†¦show more content†¦They looked at those welcoming actions as actions of weakness. Consequently of their hospitality, the Spanish robbed them of all their gold, silver and jewels. The Spaniards murdered millions of Indians including children and raped women to get what they wanted. The mass murder committed by the Spanish was usually not quick. They tended to torture their victims to be able to acquire every worth resource they had, for instance a man’s, â€Å"body was extended, hands bound to a post, and his feet put into a pair of stocks, they all the while applying burning coals to his feet at a tormenting distance, where a boy attended, who by little and little sprinkled them with oyl, that his flesh might roast the better: before him there stood a wicked fellow, presenting a bow to his breast charged with a mortal arrow, (if let fly) behind him, another with dogs held in with chains, which he threatened to let loose at him, which if done, he had been torn to pieces in a moment† (20). The Spaniards were very eager to acquire their riches and would stop at nothing until they got them. However, the fate of the Indians that survived was not any better, since they were enslaved to work hard labor often without food until starvation. This new slaves were sent to Hispaniola and Peru, because these where the places that they would get the best prices. These Natives used as slaves were used in a variety of tasks. These tasks include: building, working mines and even making â€Å"War withShow MoreRelated Columbian Exchange Essay2042 Words   |  9 Pages On August 3, 1492, Christopher Columbus departed from Palos, Spain to begin his journey across the Atlantic Ocean. This was the first of many voyages that allowed him to explore a New World where he was able to discover plants, animals, cultures and resources that Europeans had never seen before. The sharing of these resources and combination of the Old and New World has come to be known as the Columbian Exchange. During these explorations, the Europeans brought diseases such as malaria, yellowRead MoreWorld Civ Quiz3656 Words   |  15 PagesPortuguese mariner who sailed to Calicut in 1498 was A. Dias B. Columbus C. Cook D. Vasco da Gama 2. Which of the following was not one of the main inspirations for European exploration? A. The desire to conquer China and India B. The search for basic resourcesC. The desire to establish new trade routes to Asian marketsD. The desire to spread Christianity 3. The first European nation to dominate trade with Asia was A. EnglandB. Spain C. Portugal D. FranceRead MoreColonization and the First Globalization2299 Words   |  10 Pagescolonization unfolded in the Americas, Siberia, Africa, and China, a person must first understand the definition of colonization. Simply put, colonization is an ongoing process of control by which a central system of power dominates the surrounding land and its components. This means that a foreign government moves into the land and seizes control; gaining power, natural resources, and a larger economy. In the year 1492, an Italian explorer by the name of Christopher Columbus set out on an expeditionRead MoreThe Philippine Architecture: Spanish Colonial Period18287 Words   |  74 PagesSpanish Colonial Period Chapter Review Arch 117 Abegail Imee R. Enriquez 2012-68836 Spanish Colonial Period How does Spanish Colonial architecture reflect Filipino identity? Discuss the various building types and their relationship to pre-colonial architecture in your arguments. Spanish colonial architecture reflects Filipino identity mostly through the Religious Architecture. As what the world knows, Philippines is the only Catholic country in Southeast Asia; thus, most of our structures allRead MoreMarketing Mistakes and Successes175322 Words   |  702 PagesSENIOR MEDIA EDITOR George Hoffman Lise Johnson Carissa Doshi Dorothy Sinclair Matt Winslow Amy Scholz Carly DeCandia Alana Filipovich Jeof Vita Arthur Medina Allison Morris This book was set in 10/12 New Caledonia by Aptara ®, Inc. and printed and bound by Courier/Westford. The cover was printed by Courier/Westford. This book is printed on acid-free paper. Copyright  © 2009, 2006, 2004, 2001, 1998, 1995, 1992, 1989, 1986, 1981, 1976 John Wiley Sons, Inc. All rights reserved. NoRead MoreRastafarian79520 Words   |  319 Pageslate twentieth century, its apparatus of cultural formation was controlled fully by the elite who, to a large extent, ran the educational apparatus and the economic system. But much of the country was beginning to question in earnest the structure of colonial society by the early 1930s. The emergence of Rasta during that period corresponds with so much that was happening around the world. Rastas could tell that social unrest in Jamaica was going to lead to a movement away from colonial rule andRead MoreProject Managment Case Studies214937 Words   |  860 Pagesmanagement : case studies I Harold Kerzner. -- 2nd ed. p. cm. Includes bibliographical references and index. ISBN-13: 978-0-471-75167-0 (pbk.) ISBN-10: 0-471-75167-7 (pbk.) 1. Project management-Case studies. I. Title. Printed in the United States of America Contents Preface xi 1 PROJECT MANAGEMENT METHODOLOGIES 1 Lakes Automotive 3 Fems Healthcare, Inc. Clark Faucet Company 2 5 7 11 IMPLEMENTATION OF PROJECT MANAGEMENT Kombs Engineering 13 Williams Machine Tool Company

Friday, December 20, 2019

Diagnosis And Treatment Of Adhd - 877 Words

Another developing concern in regard to the prevalence of ADHD is that there is a growing shifts in the onset span and in the population currently diagnosed with ADHD. A clinical practice guideline published by the American Academy of Pediatrics (2011) reported the expansion of the age range in regard to diagnosis and treatment of ADHD from 6 through 12 years of age to 4 through 18 years of age. More recent studies substantiated that a majority of ADHD cases persists well into adulthood in spite of the widespread recognition of this neurodevelopmental disorder’s onset for which it only occurs in childhood and adolescent years (Simon, Czobor, Balint, Meszaros, Bitter, 2009). Furthermore, some adults are diagnosed with ADHD without having been diagnosed previously (National Resource Center on ADHD, 2013). Moreover, Asherson et al. (2012) raised a crucial argument in their research that adults with ADHD likely underestimate or ignore the influence brought by the disorder and at tempt to compensate for or rationalize the deficiencies by adapting lifestyle that works for them. Thus, it is likely that the current prevalence of ADHD in adults is underreported. Essentially, it indicates that ADHD is a life-long neurodevelopmental psychiatric disorder attributed to a sophisticated combination of genetic and environment components. As ADHD is categorized in neurodevelopmental disorders in the DSM-5, this psychiatric disorder involves selective impairment in relation to neurologicalShow MoreRelatedADHD Diagnosis and Treatment Essay1242 Words   |  5 Pagesspending on ADHD drugs for kids under the age of five. A lot of children have been diagnosed with ADHD, and many of their parents have opted to give them behavioral drugs. Some parents give the drugs because they are not aware of the long term effects or the psychological dependency, and lastly because they are not aware of the alternatives. As parents we have to be more cognizant of what these disorders are and how they affect the child. Drugs are not always the only solution. ADHD, or AttentionRead MoreADHD: Diagnosis, Treatment, Etiology, and Treatment Outlook Essay1966 Words   |  8 PagesADHD: Diagnosis, Treatment, Etiology, and Treatment Outlook Attention Deficit with hyper activity Disorder commonly known as ADHD is classified as a disruptive behavior disorder usually diagnosed in childhood. ADHD is the most commonly diagnosed behavior disorder of childhood. It appears to be more common in boys than it is girls. This Disorder is more common in boys than in girls and approximately five in one hundred children are affected (Busing). There are three subtypes: PredominantlyRead MoreAttention Deficit Hyperactive Disorder ( Adhd ) Medications And The Over Diagnosis And Treatment Of Adhd1832 Words   |  8 Pagesrise in Attention Deficit Hyperactive Disorder (ADHD) medications and the over diagnosis and over treatment of ADHD in patients. ADHD is defined as a â€Å"persistent pattern of inattention and /or hyperactivity-impulsivity that is more frequent and severe than is typically observed in individuals at a comparable level of development† (Batstra Frances 2012). Since there is an abundance of information concerning thi s topic, this paper will focus on whether ADHD is over diagnosed or under diagnosed and ifRead MoreAttention Deficit Hyperactive Disorder ( Adhd )1678 Words   |  7 Pagesâ€Å"ADHD is a neurological difference that affects learning and language, and every aspect of life† (Hardman). It has been argued that ADHD (Attention Deficit Hyperactive Disorder) is not a real disease, but it has been confirmed by neurological testing that ADHD is a real disease. It has been found that ADHD symptoms are caused by a child having less brain activity in their frontal lobes; this part of the brain controls the impulse control which will make it harder for the child to sit still. ThereRead MoreAttention Deficit / Hyperactivity Disorder Essay1121 Words   |  5 PagesAttention-Deficit/Hyperactivity Disorder (ADHD) Ailene M. Broadbent Mohave Community College Attention-Deficit/Hyperactivity Disorder (ADHD) ADHD is one of the most common neurological disorders diagnosed and treated in children. ADHD often affects a child’s ability to focused for any amount of time and can affect their life adversely if not diagnosed and treated properly. One of the problems with ADHD is that it can be difficult to diagnose and treat, because there are many different conditionsRead MoreAdhd : A Better Safe Than Sorry874 Words   |  4 PagesThe â€Å"better safe than sorry† mentality leads to over diagnosis in adolescent ADHD furthermore causing the concern of overprescribing of medication as treatment and â€Å"overly managing† the disorder. Approximately 4.6 million children between age 6 and 17 received a diagnosis of ADHD, and over half of them (59%) were given medication (Parens and Johnston, 2009). Some of the usual prescribed medicines to those with ADHD is that of Ritalin and Adderall – drugs that are classified in the same category asRead MoreHow Society Views Childr en with Adhd1600 Words   |  7 PagesATTENTION DEFICIT HYPERACTIVITY DISORDER I. Society Views A. Society Views on Children with ADHD B. How Society Affects the Development of the ADHD Child 1. Mental development 2. Physical development 3. Social development II. Diagnosis A. Reasons for Seeking Professional Diagnosis B. How the Diagnosis is Made C. Why the Diagnosis can be Incorrect III. Treatment A. Ritalin B. Modern Therapy 1. Herbal Therapy 2. Mental Therapy 3. Diet Therapy Read MoreAdhd And Its Effects On Children Essay1283 Words   |  6 Pageschildren took any prescription medication related to ADD, ADHD, or hyperactivity. There was an analysis investigating whether and to what extent minority children diagnosed with ADHD were taking medication for the disorder. I one particular study participants were asked to answer the questions with a â€Å"yes† or â€Å"no† response. According to the data parents answered that 650 of 780 children with an ADHD diagnosis use prescription medication for ADHD (Morgan, Staff, Hillemeier, Farkas, Maczuga, 2013). ResultsRead MoreIs Adhd over-Diagnosed Among School Children1409 Words   |  6 PagesIs ADHD Over-diagnosed Among School Children? After reading the review, (Is ADHD over-diagnosed among school children?) by C. Collins, I am in agreement with T. E. Elder in that yes, ADHD is over-diagnosed. I chose to accompany the review by C. Collins with the article, Attention Deficit/Hyperactivity Disorder, which originated from the Facts on File; Issues and Controversies Database. After reading both the review and the article I highly believe that ADHD is definitely over-diagnosed. In theRead MoreOver-Diagnosis Of Attention Deficit Hyperactivity Disorder.1273 Words   |  6 PagesOver-diagnosis of Attention Deficit Hyperactivity Disorder Attention Deficit Hyperactivity Disorder (ADHD) or Attention Deficit Disorder (ADD) is one of the most commonly diagnosed mental disorder among children and adolescents (UCLA). ADHD/ADD usually becomes apparent in children during preschool and early school years. ADHD/ADD affects 3 percent to 5 percent of approximately two million American children (Frequently). Attention Deficit Hyperactivity Disorder (ADHD) or Attention Deficit Disorder