Know about MonaVie
Monavie is a Multi Level Marketing (MLM) company, which produce and distribute nutritional beverage. The nutritional beverages of Monavie are produced from blended fruit juice concentrates and some of the products are with freeze-dried acai berry powder. The company was founded in the year 2003 to market and distribute diet and weight loss supplement products. The MonaVie nutritional beverage was launched in the year 2005 as a MLM (Multi Level Marketing) company with main office of the company in th Salt Lake City, Utah in United States. MonaVie nutritional beverages are claimed to contain high concentration of antioxidants and thus have health benefits, but there is controversy over the claim of health benefits of Monavie nutritional beverages. Many organizations and individuals have questioned the legality of health benefit claims of Monavie nutritional beverages.
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What is Porphyria?
Porphyrias are a group of metabolic disorders and each of the porphyrias result due to deficiency of a specific enzyme in the heme biosynthetic pathway. These enzyme deficiencies are inherited as autosomal dominant or recessive traits (the only exception being porphyria cutanea tarda or PCT which usually is sporadic). In the causation of porphyrias, environmental, physiological and genetic factors play complex roles with their interaction to each other.
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Know about Ovarian Cysts
Ovarian cyst may be present in one or both ovaries. Cyst is collection of fluid in a fibrous sac. The size of ovarian cysts can vary greatly from pea size to bigger than an orange and weight of an ovarian cyst also vary greatly according to the size. The weight of ovarian cyst may be a few grams to few hundred grams. Ovarian cysts are generally benign and rarely malignant.
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Know about Travel Nursing
Travel nursing is temporary assignment for nurses of any specialty at the location they prefer, unlike traditional nursing. The pay for travel nurses are generally better than traditional nursing jobs. Travel nursing is at present fast growing field and at great demand. Traveling nursing is part of allied health care.
Travel nurses are used for supplementing temporary or sometimes permanent shortages of nursing staffs in hospitals of all sizes in various parts of United States. It is estimated that at present there are more than 25,000 nurses registered as travel nurses and the number is only growing.
The benefits of joining as travel nurse are many.
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How Vomiting Occurs?
Nausea is the subjective feeling of a need to vomit and vomiting or emesis is the expulsion of gastrointestinal contents through mouth, which is due to contractions of gut and thoraco-abdominal wall musculature. Vomiting should be differentiated from regurgitation, which is effortless passage of gastric contents into the mouth.
Vomiting occurs due to stimulation of ‘vomiting center’ which is situated in the medulla oblongata in the brain. Multiple pathways can elicit vomiting. Generally CTZ (chemoreceptor trigger zone) and NTS (nucleus tractus solitarious) are major relay centers of vomiting. Impulses which arise from GIT (gastrointestinal tract), throat or other viscera are relayed through CTZ and/or NTS to “vomiting center” and cause vomiting. CTZ is also accessible by many blood borne drugs, hormones, toxins and mediators which can cause vomiting, because CTZ is not protected by BBB (blood brain barrier).
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Phototherapy and Photochemotherapy
Ultra violet (UV) rays can be used for the purpose of treatment, either alone (generally UV-b rays are used) or in combination with topically applied agents, as is used in treatment of psoriasis and atopic dermatitis, for inducing remission and health state of skin. When UV is combined with a topically applied agent or systemically administered agent, than it is called photochemotherapy.
Examples of photochemotherapy in psoriasis:
Topically applied psoralens or systemically administered psoralens (psoralens are tricyclic furocoumarins which if intercalated into DNA and exposed to UV-A eventually form DNA cross-links) are combined with UV-A (called as PUVA) is effective in treating psoriasis and in the early stages of cutaneous T cell lymphoma and vitiligo. The structural changes that occur in DNA thought to decrease DNA synthesis and is responsible for the improvement that is seen in psoriasis. But how PUVA (psoralen ultra-violet-A) photochemotherapy is useful in cutaneous T cell lymphoma is not clearly understood.
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Photosensitivity Diseases
Exposure to sun may cause various medical problems due to photosensitivity and/or photoallergy. The diseases which can occur and affect patients’ health due to exposure to sun can be classified as genetic, metabolic, phototoxic, photoallergic, photoaggravated, idiopathic, neoplastic and degenerative.
The diseases which are due to photosensitivity are listed below:
- Genetic: Albinism, Bloom syndrome, Cockayne's disease, Erythropoietic porphyria, Erythropoietic protoporphyria, Familial Porphyria cutanea tarda, Hepatoerythropoietic porphyria, Variegate porphyria, Kindler syndrome, Phenylketonuria, Rothmund-Thompson disease, Xeroderma pigmentosum.
- Metabolic: Carcinoid syndrome, Hartnup disease, Kwashiorkor, Pellagra (commonly caused by deficiency of niacin, a B complex vitamin), Sporadic Porphyria cutanea tarda.
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Refrigeration in Medical Field
Refrigeration is an essential requirement in various field of medicine. Refrigeration is required in Hospitals, Nursing homes, Laboratories and Clinical Research Organizations and also in the field of every medical research. Different types of refrigerators are available for medical use and this refrigerators provide suitable for medical refrigeration. Medical refrigerators generally comes with CFC free refrigeration system and insulation.
The required temperature for medical refrigeration is +2ºC and +8ºC. But in general the household refrigerators maintain internal air temperature between +4ºC and +8ºC. Apart from maintaining internal air temperature between +2ºC and +8ºC there are also few special facilities required for the refrigerators to be used in the field of medicine. These special features in the refrigerators include
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Chronic Nonmalignant Effects of Sun Exposure
Chronic exposure to direct sun may result in malignant (cancerous) and non malignant effects on skin. The and non malignant effects of chronic sun exposure are discussed here.
Exposure to sun cause photo-damage to the skin. The sun-exposed skin (long and chronic exposure) consist of wrinkling, blotchiness, and a roughened, irregular, "weather-beaten" leathery appearance. Whether this effect (photoaging) represents accelerated chronologic aging or a separate and distinct process is not clear.
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Causes of sunburn
Many mechanisms and factors play role in causing sunburn. The most important factor in causation of sunburn after acute exposure to direct sunlight is the degree of melanin pigmentation (the number of melanocytes in skin) in skin. The darker the skin, the more is the number of melanocytes and the lesser effect of sun on the skin. The reason why blacks do not get sunburn or have any effect (if any effect also very minor and insignificant) of sun is presence of very large number of melanocytes with large amount of melanin pigment.
The UV spectrum of sunlight:
Ultra-violet (UV) spectrum of sunlight is the main culprit in causation of sunburn, although other wavelengths may also have some minor effects. The UV spectrum reaching the earth is arbitrarily divided into two major segments, comprising the wavelengths from 290–400 nm into UV-B (Ultra-violet-B) and UV-A (Ultra-violet).
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