منابع مشابه
Repair bond strengths of non-aged and aged resin nanoceramics
PURPOSE To explore the influence of different surface conditionings on surface changes and the influence of surface treatments and aging on the bond strengths of composites to non-aged and aged resin nanoceramics. MATERIALS AND METHODS Rectangular-shaped non-aged and aged (5000 thermocycles) resin nanoceramic specimens (Lava Ultimate) (n=63, each) were divided into 3 groups according to surfa...
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Background: Alkaptonuria (AKU) or ochronosis is a rare progressive degenerative arthropathy that results from deficiency of enzyme homogentisate 1,2 dioxygenase (HGD). The features include arthritis of the spine and in larger peripheral joints, with chondrocalcinosis. In this paper, we present a case of alkaptonuria in a 54 year old woman in Tehran, Iran. Case Presentation: A 54 year old woman ...
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Examination of the diseased bronchi reveals the loss of normal columnar ciliated epithelium. This is replaced in some cases by purely cicatricial tissue, and in others by stratified squamous cell epithelium. The basement membrane of the mucosa is likewise destroyed or damaged with disappearance of the elastic tissue fibers. The submucosa becomes densely fibrotic and rigid. In the vicinity of th...
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Body temperature is maintained by a balance between heat production and heat loss. Temperature regulation consequent to exposure to a cold environment appears to be modified in elderly persons. An evaluation of the physiological adjustments made by older individuals is presented. It is apparent that hypothermia can develop in the older population as a consequence of modifications in both behavi...
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The extension of privacy laws to cover private sector providers and the proposal of a National Health Privacy Code highlight the importance of examining privacy issues in aged care policy and practice. Although privacy in health and aged care may also include physical, psychological and social dimensions, it is informational privacy that is the focus of these recent changes. In this paper a ran...
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ژورنال
عنوان ژورنال: Nature
سال: 1975
ISSN: 0028-0836,1476-4687
DOI: 10.1038/258041b0