| Papers [1-15] of 100 :: [Page 1 of 7] | | Go to page : 1 2 3 4 5 6 7 —> | Search results on "VITAMIN B12 MODEL COMPOUNDS": |
|
|
Vitamin B12 Model Compounds, 2000.
An experimental analysis for the purposes of studying cobalamins, a coenzyme of vitamin B12.
1,405 words (approx. 5.6 pages), 4 sources, $ 46.95
»
Click here to show/hide summary
From the Paper
"Three derivatives of cobaloximes 1 containing substituted alkyl groups linked to the cobalt atom were prepared. Cobaloximes are cobalt(III) complexes in which two dimethylgloxime anions chelate the metal and form hydrogen bonds to each other1. This results in a planar tetrahedral group surrounding the cobalt with two axial groups. One axial group is the base pyridine and the second axial group is an alkyl group. In this reaction the pH of the solution determined which derivative was prepared. The oxidative addition of the acrylonitrile ligand 2 to the reduced cobaloximes in neutral solution produced the alpha derivative. In basic solution the beta derivative was formed. The third derivative was formed with the deprotonation of the beta derivative, which then underwent oxidative addition to form the trans derivative. The spectra of the cobaloximes derivatives were recorded using infrared and 1H NMR. The spectra were in agreement with the proposed structures of the derivatives."
| |
|
Keystone Compounds, 2005.
An examination of how the utilization of keystone compounds in chemical education can benefit and enhance instruction.
9,251 words (approx. 37.0 pages), 27 sources, APA, $ 191.95
»
Click here to show/hide summary
Abstract
This study examines the role ferrocene plays in the chemistry curriculum beginning with introductory chemistry through advanced studies in chemistry. The findings of the study indicate that ferrocene, when introduced in the basic concepts of chemistry and then continued as example and practice in analytical and advanced investigations, facilitates an overall understanding of chemical concepts while maximizing exposure to general, analytical, inorganic and organometallic concepts. Ferrocene becomes in essence a "one stop shop" for understanding.
Introduction
Statement of the Problem
Purpose of Study
Importance of Study
Rationale of Study
Overview of Study
Review of Related Literature
Methodology
Description of the Study Approach
Data Analysis
Summary, Conclusions and Recommendations
From the Paper
"Consistency in learning methods is essential to cognitive retention. The utilization of similar compounds as example, practice and teaching aids can facilitate better understanding of material through familiar experiences while at the same time enhancing the teaching experience. The defacto method of chemical education is to utilize classic textbook teaching of building on foundation concepts throughout the curriculum. While this methodolgy works well, it can be improved. Selecting one or more compounds to use as a foundation, "keystone" compound, would benefit both student and teacher. Currently in literature, there are copious examples throughout the college career that equates to confusion. By defining compounds that embody general chemistry, organic, inorganic, physical and analytical properities throughout the levels of chemical education, students understanding would greatly improve. The universities would also benefit due to the consistency expected at each level. Identifying such compounds would also lend itself to saving funds by limiting the compounds students are exposed to."
| |
|
Analysis of Organotin Compounds, 1999.
A look at the chemicals used to make plastics and other important products.
1,883 words (approx. 7.5 pages), 1 source, $ 60.95
»
Click here to show/hide summary
From the Paper
"In recent years attention has been focused on the need to analyze organotin compounds. When tin is combined with materials that contain carbon, it is called an organotin compound and it is used to make plastics, food packages, plastic pipes, pesticides, paints, and pest repellents. Organotin compounds, specifically tributyltin and triphenyltin, should be regarded as highly toxic and when used in marine environments lead to severe problems for the local wildlife."
| |
|
The Importance of Calcium Compounds, 2001.
The following paper discusses the need for and uses of calcium in our bodies, lives and industries.
1,180 words (approx. 4.7 pages), 10 sources, MLA, $ 40.95
»
Click here to show/hide summary
Abstract
This paper describes the need and benefits of calcium in our lives and discusses the detrimental or negative effects of overusing calcium resources.
From the Paper
"It is obvious, the impact that calcium compounds have on our world today. It goes without saying that our lives would be very different without them. They are an essential mineral to maintain health, and an important component of many things that we need to make our lives better.
However, all of this convenience is not without cost."
| |
|
Vitamin Supplements and the Dietician, 2006.
Examines the need for dieticians to be concerned not only with what and how well people eat, but to clear up the confusion about "taking" vitamins either to replace foods or as supplements.
2,572 words (approx. 10.3 pages), 10 sources, MLA, $ 77.95
»
Click here to show/hide summary
Abstract
This paper explains that one of the most important roles of a dietician today is to provide insight and proper guidance for taking, or not taking vitamin supplements. The paper then looks at the history of the so-called "vitamin revolution" and all of the advertisements and news generated by the media about the necessity of proper vitamin intake and then examines whether all of this media output is just hype on the part of the vitamin industry and certain health professionals. For the purposes of evaluating the reasons for all of this focus on vitamin intake, the paper concentrates on three vitamin supplements: Anti-oxidants, Vitamin C and Vitamin E.
From the Paper
"More than ever dieticians have to be concerned not only with what and how well people eat, but they have to attempt to clear up the confusion about "taking" vitamins either to replace foods, or as supplements. Perhaps there is no more important aspect of providing proper nutrition for the public in the coming years than being able to provide insight and proper guidance for taking, or NOT taking vitamin supplements. "The first line of attack for many problems is already diet-centered...Despite all the breakthroughs in nutritional research, deciding what and how to eat can still be enormously confusing.""
| |
|
Vitamins and Supplements, 2008.
A discussion on whether vitamin and supplements can be considered a healthy choice or a hindrance.
933 words (approx. 3.7 pages), 14 sources, MLA, $ 33.95
»
Click here to show/hide summary
Abstract
This paper discusses how vitamins and supplements are a part of many individual's daily lives. In particular, it looks at how many people hop on the health bandwagon, purchasing vitamins they see in advertisements, which claim to improve wellness and how the overall ignorance towards supplements, and the lack of consumer's research puts them at risk. It examines how there are multiple combinations of vitamins that are detrimental to the body as well as certain synthetic supplements and how manufacturers are not making any effort to slow this ignorant vitamin feeding frenzy either.
From the Paper
"The problem is not just the consumer's lack of research and information. The pharmaceutical companies are to blame as well. Vitamins, unlike drugs, are loosely regulated. The FDA just recently started regulating vitamins as foods, which is not strict at all compared to drug regulations (Marketplace). Also, vitamins are marketed as miracle supplements, making outrageous, unsupported claims, such as, "doctor-recommended," which do not actually withhold meaning, but appeal to the uneducated consumer (Jacobson 1). As far as nutritional value, these pills are not even absorbed or used by the body like food is. Also, the ingestion of certain vitamins together, can interfere with each other's absorption, which is actually unhealthy. Not to mention, the fact that many vitamins are fat soluble, meaning the fatty tissue accumulates over time, causing poisonous reactions within the liver, and resulting in serious medical consequences (Anderson). "
| |
|
The B Vitamins and Mental Health, 2007.
An examination of the effects of vitamin B deficiencies, particularly with regards to mental health.
9,536 words (approx. 38.1 pages), 27 sources, MLA, $ 195.95
»
Click here to show/hide summary
Abstract
This study aims to identify the specific constituents of the vitamin B complexes in general and then goes on to describe how deficiencies of these vitamins adversely affect human health. The paper discusses which aspects of the population are at higher risk of vitamin B deficiencies and what can be done to remedy the problem. The paper specifically talks about the relationship between mental health issues and vitamin B deficiencies.
Table of Contents:
Chapter 1: Introduction
Statement of the Problem
Purpose of Study
Importance of Study
Chapter 2: Review of Related Literature
Chapter 3: Conclusion
From the Paper
"Given the above, it is clear that people can experience essential nutrient deficiencies even when they are consuming the recommended daily allowances. While it remains vitally important to prevent such vitamin deficiency syndromes, there is a paucity of scientific evidence that additional intake levels that exceed the recommendations set out in Table 3 above of protein or micronutrients in supplement form is able to enhance athletic performance, notwithstanding the claims of manufacturers to the contrary (Chee et al., 2001). These authors caution that these supplements can actually interfere with the metabolism of the vitamin B complexes, thereby making matters worse instead of better. "In fact, isolated amino acid supplements may impair the uptake and utilization of other essential amino acids from diet, and vitamins and minerals (particularly fat soluble vitamins) may be toxic in high doses. The most common deficiency states in elderly persons related to exercise and functional capacity are energy, protein, potassium, magnesium, vitamin B12, and vitamin D" (Chee et al., 2001, p. 194)."
| |
|
Vitamin Supplements, 2002.
An argumentative thesis in favor of taking vitamin supplements.
873 words (approx. 3.5 pages), 4 sources, APA, $ 31.95
»
Click here to show/hide summary
Abstract
The paper shows that consumers today are faced with a myriad of information concerning the safety and viability of vitamin supplements. One day the experts say one thing and the next day there are new studies by other experts. This all creates quite a dilemma for those who are trying to do the best for their bodies. The paper argues, however, that through the years there has been a steady stream of overwhelming evidence proving that vitamin supplements are helpful and beneficial for physical health, and moreover, may affect behavior. The paper uses information from various studies to prove that taking vitamins is extremely beneficial to ones health and wellbeing.
From the Paper
"For years researchers have studied the benefits of vitamin E on the skin, hair, heart, and over-all health. Now researchers have proven that vitamin E supplements could save millions of health care dollars each year. A study published in the ?American Journal of Cardiology? showed significant savings from various supplements, especially vitamin E. In a ?double-blind, placebo-controlled trial involving 2,002 patients?vitamin E reduced non-fatal heart attack risk by 77 percent? (Natural 1998). Researchers found a savings of $578 per patient in patients taking vitamin E supplements compared to those who took placebos. The savings were based on a reduction in hospital admissions for nonfatal heart attacks."
| |
|
Vitamin E, 2002.
This paper examines the benefits of Vitamin E.
710 words (approx. 2.8 pages), 6 sources, MLA, $ 25.95
»
Click here to show/hide summary
Abstract
The author discusses how the benefits of vitamin E have been documented for years and how it has been shown to fight many diseases, promote good health and add years to one's life. Unfortunately, says the author, one cannot gain a healthy level of the vitamin through nutrition so it is important that the public know this and take steps to take vitamin E in capsule or other forms.
From the Paper
"For many years experts and consumers alike have examined the benefits of Vitamins and minerals. One of the most highly touted vitamins has always been vitamin E. According to those who advocate its use vitamin E provides many benefits to those who take it including a reduction in prostrate cancer(Recerap, 1998). Vitamin E has several uses that have been proven over the years as well as many other benefits that have not yet be proven scientifically but are accepted with anecdotal information."
| |
|
Vitamins and Healing Rates, 2004.
A study of how the use of vitamins effects healing rates for wounds and ulcers.
2,556 words (approx. 10.2 pages), 18 sources, MLA, $ 77.95
»
Click here to show/hide summary
Abstract
The goal of this study is to refine our current understanding of how nutritional supplements can effect wound healing, in general, and pressure ulcers, in particular. This research paper will explore the healing rates of pressure ulcers in patients who have been given multivitamin supplements alone, multivitamin supplements with Arginine, or supplements of 500 mg Vitamin C BID and 50 mg zinc. This paper hypothesizes that healing rates of Stage II and III pressure ulcers are similar in patients receiving multivitamin supplements alone or patients receiving 500 mg Vitamin C BID and 50 mg zinc and improved in patients receiving arginine supplements.
Contents
Background
Pressure Ulcers and Wound Healing
Vitamin C
Zinc
Multivitamins
Arginine
Summary
From the Paper
"Pressure ulcers are a common problem among patients in acute and long-term care facilities. Pressure ulcers can vary significantly in severity and condition. According to Agency for Health Care Policy and Research guidelines, stage II pressure ulcers consist of "Partial thickness skin loss involving epidermis, dermis or both (e.g., abrasion, blister, or shallow crater)" (Folkedahl, Frantz & Goode). Stage III pressure ulcers consist of wounds that involve skin loss of full thickness that may extend to underlying fascia, but not through the fascia. Clinically, a stage III pressure ulcer presents as a deep crater that may or may not undermine adjacent tissue (Folkedahl, Frantz & Goode)."
| |
|
Calcium and Vitamin D, 2008.
A look at the health benefits of calcium and vitamin D with a focus on osteoporosis.
1,258 words (approx. 5.0 pages), 8 sources, APA, $ 42.95
»
Click here to show/hide summary
Abstract
This paper discusses how research has shown that there is a direct correlation between bone condition in an individual's juvenile and mature years and subsequent susceptibility to osteoporosis-related fractures. In particular, the paper looks at how the interventions that are being investigated to reduce osteoporosis-related health risks and to improve general bone health is diet and supplements of vitamin D and calcium.
Outline:
Health, Vitamin D and Calcium
Interventions
Conclusion
From the Paper
"The focus on osteoporosis prevention in turn has improved market performance of foods. Klotter (2005) points out that among all nutrients, calcium is among the most advocated by retails products. These include not only dairy-related products but vegetables, fruits and exercise activities as well. Whereas there has been some counter-marketing against dairy products because of their fat content and fears of contamination from diseases in the 1990's, they have gained better regard in consideration of their value in preventing osteoporosis (Heaney et al, 2000). The opinion is one that Klotter (2005) also recognizes in the course of her study of the impact of initiatives against osteoporosis in health as well as industrial markets today."
| |
|
Calcium and Vitamin D Supplementation, 2007.
An analysis of the method and procedure for participation in a study on the effects of calcium and vitamin D supplementation on female, high school cross country runners.
1,063 words (approx. 4.3 pages), 5 sources, MLA, $ 37.95
»
Click here to show/hide summary
Abstract
This paper presents a nursing research study on the effects of calcium and vitamin D supplementation on female, high school cross country runners. The paper begins with a scientific rationale for the study regarding the risk of stress fractures in runners. It then goes on to describe the method and procedure for the study, as well as the benefits and risks associated with participation in the study.
Table of Contents:
Overview of Study Scientific Rationale and Purpose
Who Is Eligible To Be In The Study; What Type Of Patients Will Be Involved?
Where And When The Study Will Be Conducted And The Length Of Commitment
What Tests Or Procedures Will The Study Involve? Do They Have Risks? Will They Cause Pain Or Discomfort (Physical Or Mental)?
Anticipated Benefits And Risks Of Taking Part In The Study
Who Will Have Access To The Study Information, And What Is The Plan For Protecting The Information?
Frequently Asked Questions (FAQs)
From the Paper
"Stress fractures are small cracks in the shaft of a bone caused by overuse or excessive physical stress. "About sixty-nine percent of stress fractures occur in runners," the rest in recent military recruits ("Stress Fractures," 2006, Mass General Hospital for Children). 21 per cent of female recruits are reported to suffer from this form of injury. ("Calcium, vitamin D may reduce stress fracture risk," 2007, NutraIngredients). "Predisposing factors include running after a period of inactivity, change in the running surface, poor training and inadequate shoes," as well as weakened bones because of inadequate diet or poor bone density ("Stress Fractures," 2006, Mass General Hospital for Children). Frequent dieters may also be at higher risk for stress fractures caused by osteoporosis, regardless of their weight, as the body compensates for the decreased caloric intake by reducing its bone-building functions (DeNoon, 2006)."
| |
|
"Vitamin A Rice", 2002.
A review of Vandana Shiva's "Genetically Engineered 'Vitamin A Rice': A Blind Approach to Blindness Prevention".
650 words (approx. 2.6 pages), 1 source, $ 26.95
»
Click here to show/hide summary
Abstract
This paper assesses the article by Vandana Shiva entitled "Genetically Engineered 'Vitamin A Rice': A Blind Approach to Blindness Prevention". This article provides an exceptional examination of why genetic engineering of plant crops will not solve either the world's nutritional needs or prevent hunger. .
| |
|
Vitamin E, 1993.
Nutritional analysis. Health benefits, deficiencies, body's needs, in diet, supplements and research results.
1,125 words (approx. 4.5 pages), 6 sources, $ 39.95
»
Click here to show/hide summary
From the Paper
" Vitamin therapy has moved from the fringes of the health community to a more central position as scientific evidence of the value of certain vitamins for certain therapies or as preventives has been demonstrated. Often, the evidence is inconclusive and only points to a possible link, and many people respond by taking vitamins at suggested doses in case the possible benefit is real. Research continues on such substances as Vitamin E, to which a number of health benefits have been linked by research and by anecdotal evidence that is less powerful to the scientific community but often quite powerful to the general public. Research is certain to continue on these questions, and in the meantime many people will take doses of Vitamin E to assuage health problems or to stave off possible health problems."
| |
|
Lead Halides, 1998.
A paper analyzing the physical and chemical properties of the lead (II) and lead (IV) halide compounds. Comparisons between compounds and applications are also discussed.
5,644 words (approx. 22.6 pages), 28 sources, APA, $ 136.95
»
Click here to show/hide summary
Abstract
After a brief historical introduction to lead compounds, it explains what +2 and +4 cations are and examines their uses. The physical and chemical properties of the lead (II) halides are also discussed, with mention of "mixed" halides (e.g., PbFCl).
Outline
An Introduction to Lead
General Lead Dihalide Trends
Mixed Lead Halides
Lead Chloride
Lead Bromide
Lead Iodide
Lead Fluoride
Lead Tetrahalides
Lead Tetrafluoride
Lead Tetrachloride
Possible Lead Halide Application
From the Paper
"Lead, located at the bottom of group IVA on the periodic table is well known for being a massive (atomic mass is 207.2 amu) and dense element. The density characteristics associated with lead arise from its rather compact structure despite its large size. This occurs in accordance to the periodic trend that atom size decreases as one moves left to right across a period. This trend, in conjunction with the massive properties found among the period six elements, accounts for the elements ranging from osmium to lead in that row being the densest (osmium does have the largest density) known to exist."
|
|
|
