Graves Disease essays

Graves Disease essays Graves disease is a basic defect in the immune system causing antibodies, which stimulate and attack the thyroid gland causing growth of the gland and overproduction of thyroid hormone. These antibodies may also attack the tissues in the eye muscle and pretibial skin, causing protruding eyes, opthalmopathy, and dermopathy thickening of the skin over the front of the legs. The thyroid gland is located in the neck. It manufactures two thyroid hormones that are essential for metabolism and growth. The thyroid takes iodine from the food we eat and uses it to make thyroid hormones. If thyroid hormones are in short supply, a person feels sluggish, has a slow heartbeat, and can even feel depressed. This condition hypothyroidism. Too much thyroid hormone is called hyperthyroidism and is also a problem. This condition is almost the exact opposite of hypothyroidism. The individual has a fast heartbeat, weight loss, nervousness, and heat intolerance. In addition, hyperthyroidism can affect the eye. One of the conditions that results in hyperthyroidism is Graves' disease. This condition afflicts a great many people. In this disease, the thyroid gland enlarges and releases too much thyroid hormone. The person can become restless and overactive, and the heart often races Graves disease is found in less then  ¼ of 1% of the population. Although it is fund most frequently in middle aged women, (8:1 more than men), it also occurs in children and in the elderly. There are several elements contributing to the development of Graves' disease. There is a genetic predisposition to auto-immune disorders. Infections and stress play a part. Graves' disease may have its onset after an external stress, in other instances, it may follow a viral infection or pregnancy. Many times the exact cause of Graves' disease is simply not known. It is not contagious, although it has been known to occur coincidentally between husbands...

The Best AP Chemistry Notes to Study With

The Best AP Chemistry Notes to Study With SAT / ACT Prep Online Guides and Tips It can be difficult to keep your notes organized throughout the school year, especially in a class that covers so much content. This article will give you links to notes on every topic included in the AP Chemistry curriculum. If you're missing some of your notes, or if you just want a more structured overview of what you need to know for the exam, you've come to the right place! I'll also give you some study tips so that you can use both these notes and the notes you took throughout the year to your best advantage. How to Use These AP Chemistry Notes The notes in this article can be used to study smaller portions of the curriculum or to review for the final AP Chemistry exam.There are six "Big Ideas" (main themes) that organize all the concepts in the course, so I’ve categorized these notes according to that framework.Topics should be listed in roughly the same order as you learned them in class. These notes will provide a ton of background information, but keep in mind that AP Chemistry is less about memorization of facts and more about the ability to apply your knowledge to a variety of experimental scenarios.Reading notes can only get you so far.Practice problems are essential(a point that I will emphasize again later in this article). Take a diagnostic test before you dive into these notes if you plan on using them to review for the full AP test. Based on your results,you can see which areas need the most improvement, and then you can focus on the notes that are most relevant. AP Chemistry Notes These notes come from two different sources, ScienceGeek (which is a site that has a lot of helpful practice exercises as well) and CourseNotes.I wanted to include both sets of notes in case you find one more helpful than the other. CourseNotes is primarily definition-basedwhileScienceGeek is better at actually explaining how to solve different types of problems related to each topic. I've also included a link to a document created by a high school AP Chemistry teacher that goes through all of the concepts in one place. Big Idea 1: The chemical elements are fundamental building materials of matter, and all matter can be understood in terms of arrangement of atoms. These atoms retain their identities in chemical reactions. ScienceGeek: Chemical Foundations Timeline of milestones in the history of chemistry Atomic structure and periodicity Mass spectrometry Spectroscopy Coulomb’s law Atoms, molecules, and ions Naming compounds CourseNotes: Units of measurement Classification of matter Significant figures Atomic theory Inside the atom Terminology for compounds and overall chemical nomenclature Electronic structure of atoms Wave nature of light Line spectra and the Bohr model Wave behavior of matter and quantum mechanics Orbitals and electron configuration Periodic properties of elements Effective nuclear charge and atomic size Ionization energy and electron affinities Metals, nonmetals, and metalloids Big Idea 2: Chemical and physical properties of materials can be explained by the structure and arrangement of atoms, ions, or molecules and the forces between them. ScienceGeek: Chemical bonding Covalent bonding and its relationship to orbitals Liquids and solids Gases (and gas law practice problems) CourseNotes: Chemical bonding Ionic and covalent bonding Electronegativity and dipole moments Lewis structures and VSEPR Bond enthalpy Valence bond theory Molecular orbital theory Gases Gas laws Ideal gas law and partial pressures Kinetic molecular theory and gases Intermolecular forces/phase changes Types of intermolecular forces Phase changes and diagrams Liquids and solids Big Idea 3: Changes in matter involve the rearrangement and/or reorganization of atoms and/or the transfer of electrons. ScienceGeek: Stoichiometry Types of chemical reactions and solution chemistry Half-cell reactions Redox reactions and practice problems CourseNotes: Stoichiometry Chemical reactions and formula weights Moles and empirical formulas Balanced equations and limiting reactants Solution chemistry Aqueous solutions and precipitation reactions Redox reactions Solution concentration and stoichiometry Electrochemistry Oxidation-reduction Voltaic cells Batteries and corrosion Big Idea 4: Rates of chemical reactions are determined by details of the molecular collisions. ScienceGeek: Chemical kinetics Rate laws CourseNotes: Chemical kinetics Rate law and reaction order Half-life and the collision model Catalysts and activation energy Big Idea 5: The laws of thermodynamics describe the essential role of energy and explain and predict the direction of changes in matter. ScienceGeek: Chemical equilibrium Equilibrium constants Thermochemistry Spontaneity, entropy, and free energy All about the nucleus CourseNotes: Thermochemistry Energy and thermodynamics Enthalpy Calorimetry Le Chautelier’s principle Chemical thermodynamics Spontaneous reactions and entropy Gibb’s Free Energy Nuclear chemistry Radioactivity and stability Nuclear transmutation and decay Nuclear fission Big Idea 6: Any bond or intermolecular attraction that can be formed can be broken. These two processes are in a dynamic competition, sensitive to initial conditions and external perturbations. Science Geek: Properties of solutions Solubility and complex ion equilibria Overall chemistry of acids and bases Acid-base equilibria CourseNotes: Properties of solutions Solution formation Concentration Colligative properties Properties of equilibrium Acid-base equilibria Acids (types, properties) Bases (types, properties) Acid-base relationships and salts Buffers and titrations Common ion effect Buffers Titrations Solubility equilibria Overall Review Document This document was created by an AP Chemistry teacher. It'ssort of like a (long) crib sheet with all the concepts and formulas you need to know in one place! If you want a quick holistic review without going through every individual notes page listed above, you can take a look at this document to remind yourself of the most important concepts for each unit. Ah, the bliss of knowledge. Also, this guy should probably get to the ER immediately. This is what happens when you cram, everyone. Study Strategies for AP Chemistry Notes If you want to use these notes to your full advantage, you shouldn’t just read them all and consider yourself prepared.For chemistry, you need to dig deeper to understand the material fully.Here are some tips to keep in mind: Tip #1: Start at the Beginning If you’re studying for chemistry, you should work your way through concepts in the order of when they show up in the curriculum.You need to master the basics first, or more advanced problems will look like complete gibberish to you.If there are any topics in Big Idea 1 that you don’t feel comfortable with, start your studying with those.Everything else in the course builds on the concepts you learned in the first couple of months! Tip #2: Always Follow Up With Practice Problems Every time you read a set of notes, do a few practice problems to make sure you’ve absorbed the information.Reading through these notes is a waste of time if they don’t provide you with the background information and skills you need to solve relevant problems.If you find that you’re having trouble with practice problems after you read through notes, this should be a red flag that you need to modify your study strategy. Tip #3: Supplement With Other Resources Don’t forget about the notes you took in class, handouts your teacher gave to you, and any other resources you’ve accumulated throughout the year.It’s worthwhile to shop around and see whether certain explanations of concepts resonate more than others.You might decide that videos explaining concepts are more useful to you than notes, or you may choose tobuy a review book that provides more guidance in planning out your studying. Tip #4: Don’t Cram! It’s unwise to cram for AP Chemistry.You need to do plenty of practice problems to feel comfortable with the material, and, if you cram, you won’t be able to spend enough time on this.Don’t pull out your notes the day before the exam and expect to learn everything in one marathon study session.You won’t retain the information, and you’ll be exhausted for the test. Cramming is a lot like trying to hold a huge volume of water back with a really flimsy dam. It's not gonna work out well. Conclusion The notes in this article should help you review all the essential concepts you need to know for the AP Chemistry exam. Make sure you supplement your review with practice tests so you can assess your progress and see where your main strengths and weaknesses lie. Also, keep in mind the tips I went through in the last section: Start at the beginning of the course Follow up your studying with practice problems Supplement these notes with other resources Avoid cramming Keep this article on hand so that you can refer to the notes whenever you want to review specific concepts and/or start your end-of-year cumulative review! What's Next? Do you need notes for additional AP classes besides Chemistry? Check out our articles with notes for AP Psychology, AP Biology, and AP US History. Notes are all well and good, but when do you actually need to start using them to review for the test? Find out how early you should start studying for AP exams if you're aiming for a great score. Have you planned out your schedule for the rest of your time in high school yet? If not, this guide will help you decide which AP classes to take in the future! Want to improve your SAT score by 160 points or your ACT score by 4 points?We've written a guide for each test about the top 5 strategies you must be using to have a shot at improving your score. Download it for free now:

Administration and Stakeholders of Health Plans Essay

Administration and Stakeholders of Health Plans - Essay Example The impact of the Act will be felt once its dots and crosses are assessed and also the citizens of the United States begin in a large measure to adopt preventive measures to accelerate good health conditions. The stakeholders of the health plans comprise health insurers, medical product manufacturers, health care providers, consumers, most businesses, and organized labor. Health insurance companies offering wide range of health care plans the customers can choose from are hurriedly incorporating the new changes. One has to wait and see what changes the manufacturers might effect since development on the manufacturers’ side are implemented on the basis of new development in the science field more than in legislations. The target group of customers for the health insurance companies in the United States are those in the middle age groups and professionally independent. The present reforms calls for increased private share in the health related expenditure. Thus, the markets for the health insurance are expected to further open up. The ideal governing structure should have an efficient Chief Executive Officer and Managing Director (CEO and MD) at the top level. The CEO and MD are followed by executive directors for the marketing, finance, sales, risk management, human resources, legal and operations departments. The executive directors, in turn, will have regional managers based on geographical locations. The mission statement of the organization basically covers the long term goals of the organization. The mission statement primarily comprises the ways that will be instrumental in achieving the vision of the company. The mission of the health insurance company includes that of: In the modern world, the customer is the king. The success of the company lies in allowing the customers to have greater access to alternatives. This helps in empowerment of the customers and they find themselves to be the integral part of the organization. The company should have

Marketing Environment of the Czech Republic Essay

Marketing Environment of the Czech Republic - Essay Example After its break with the Slovak Republic, the Czech nation rapidly privatized state-owned businesses. State ownership of businesses was at about 97 percent under communism—today it is less than 20 percent. The country is also reducing its dependence on highly polluting brown coal as an energy source, turning more toward nuclear energy. Unquestionably, the integral part of the history of Czech culture is Czech traditions. The traditions are mostly maintained in villages, especially in the Moravian-Silesian region, where they remain as a sign of the cultural taste of the specific areas. Traditional costumes are increasingly popular among Czech people and are also appreciated by foreign visitors. Tourism is a rapidly developing sector, and millions come to Prague to visit castles, palaces, and spas. Although the political and financial crises of 1997 eroded somewhat the countrys stability and prosperity, the Czech Republic succeeded in becoming a NATO member in 1999 and a European Union member in 2004. Czech culture has firm roots in a rich and plentiful history. Tourists and visitors from all over the world can marvel at some of the most beautiful and oldest pieces of architecture, literature and fine arts. Public administration or the management of public services is decentralized in the Czech Republic. Currently, there are only several compact issues managed directly and purely by the highest administrative level - the state. The Czech Republic uses several electoral systems and formulas for recounting votes into mandates. All elections are held on the basis of confidentiality, generality and equality. Direct voting prevails. In international relations, the Czech Republic seeks to represent itself as a democratic nation and a politically, economically and socially stable state in Central Europe. It seeks to promote not only its particular interests but also to

The life of Thomas Alva Edison a Historical Look Research Paper

The life of Thomas Alva Edison a Historical Look - Research Paper Example This happened after he was credit with the creation of the first research laboratory for industrial use in Menlo Park (Melosi, 2008). Some of his contribution included the phonograph, electric bulb, telegraph, kinetograph and alkaline storage batteries (Stross, 2007). His work has been remembered since his death in the year 1931. Early life Thomas was born on February 11 the year 1847 in Milan, Ohio. He was the youngest child in his family after his mother had lost two children in their early life. After being one of the first elites in the United States, he has had tremendous contribution to both technical and theoretical works. His life career was a business and inventor (Stout, 2008). He used his inventions to make money since at the time most of the Elites in the United States had started accumulating wealth. Due to their education, they had been respect in the society and most took this advantage to come up with new ideas of wealth creation. His hometown was a very busy one and contributed to his early works as a youth. However, after the railway bypassed Milan, it led to the fading of trade in the area. Trade was the main social activity and source of income. After trade had faded, Thomas and his family moved to Port Huron where they started a new life with hopes of better sources of income. In this new location, Thomas gained most of his early education from his mother who by then was a schoolteacher. Since it was her son’s life, she took great care of him and provided extensive education program. She was highly motivated by his son’s interest in science and external matters. He wanted to know how life was outside the Huron town. Early Career: a historical look At the age of 12, Thomas had some much interest in locomotives and especially due to reason that the railway had passed through his previous hometown. To learn more about the systems, he secured a job with a newspaper company to sell newspapers, novels, and magazines. This also motiv ated him in his reading during his free time. He visited the library several times to read books on science. After a short time selling newspapers, he started publishing his own newspaper known as the Weekly Herald. Due to his focus on railways, the paper featured railroad matters and hence attracted a large number of subscriptions from Grand Trunk. Profits from his newspaper publishing company were used to start a laboratory, which was to be used in science experiments. Unfortunately, he started losing his hearing caused by ear infections while he was a child. On scrutiny, he claimed that it was an asset since he did not have to hear what people told him as he slept. It also helped him during his reading sessions since there were no distractions for the outside. Profits from his newspaper publishing company were used to start a laboratory, which was to be used in science experiments. At the age of 24, he had already started a laboratory and factory across the Hudson River in Newark , New Jersey. He had carried out a research and noted that the people of Newark needed telegraph machines for their businesses to run well. His telegraph business started picking up after he added installations that made relaying of two messages to different lines at the same time possible. To increase the capital base, he made partnerships with the highest available bidders. His company became of Western Union’

Child abuse research paper Essay Example | Topics and Well Written Essays - 2500 words

Child abuse research paper - Essay Example The definition has expanded through the years as it came to cover physical injury to physical assault, neglect, emotional abuse, and coercive sexual activity. Statistics speaks about this grim situation: in 2002, 896,000 cases of child abuse and neglect were substantiated across 50 states and that according to the National Child Abuse and Neglect Data System, about 81% of these cases were perpetuated by parents. (Runyon et al. 2006, p. 23) These kinds of reports, however, do not necessarily reflect the actual incidence of child abuse because the figures may still be higher as many cases of abuse are still estimated to be unreported. The gravity of the situation is highlighted by the fact that child abuse is one of the five leading causes of childhood death in the United States today. (Mankiller 1999, p. 87) The answer is quite complicated to the question why parents abuse their children. There are several dimensions to the issue. For example, mothers are more prone to maltreat their children than fathers or that substance abuse contribute to the emergence of child abuse, among others. These variables, however underscore the need for effective intervention approaches to address the numerous issues in the subject. This paper will explore why treatment is important, how it is being carried out and how this strategy is more effective than punishment in addressing child abuse. In the treatment of parents involved in child abuse, it is important to consider the ecological issues that lead to the abuse. For example, is there unemployment in parents or a maltreatment in the childhood history of the parents? Also, the number of children in the family, the physical or developmental disabilities that are difficult to manage as well as other care giving responsibilities must be considered. It is important that in addressing the problem of child abuse, all parts of the family system issue must be treated. Particularly,

Sources of Measurement Error Essay Example | Topics and Well Written Essays - 500 words

Sources of Measurement Error - Essay Example Essentially, this combining of theoretical with empirical, permits as well as justifies the use of measurement, and stringent observance of these rules, allows for better and more accurate methods for describing behaviors or in making predictions. These take on their specific meanings through the following and now widely used scales of measurement, namely, nominal ordinal, interval, and ratio. Classifications, which by using a system of numbers, find common consent among scientists. Here then, consensus must come over how these numbers represent different agreed-to values, in order to sensibly group, sort, or differentiate between data. These numbers are ordered: that is, 'one number is greater than, less than, or equal to another number'.i Differences connecting numbers create what is called distance between them, allowing for a scale of measurement, for example, by agreement that zero stands as the origin number, we might simply assign numbers to the above quotation. Thus, it is possible to state clearly and unambiguously that the number value one is less than the number value two, and the number value three is more than the number value two. One factor of abstract models, is their use in designing and performing studies that measure real-world variables