منابع مشابه
Alzheimer's disease: rapid and slow progression.
The variability in the progression of Alzheimer's disease (AD) across patients has made identification of disease-delaying treatments difficult. Quantitative analysis of this variability has important implications in understanding the pathophysiology of AD and identifying disease-delaying treatments. The functional assessment staging (FAST) procedure characterizes seven stages in the course of ...
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Background: one of the leading clinical problems for premature neonates especially with very low birth weight is the type and amount of feeding. The authors aimed to compare outcomes of slow versus rapid feeding in premature neonates hospitalized in Al-Zahra hospital, Rasht. Methods: This is a clinical trial that was conducted on 62 premature neonates aged less than 35 weeks of gestation who w...
متن کاملGrowth-inhibiting conditions slow growth plate senescence.
The mammalian growth plate undergoes programmed senescence during juvenile life, causing skeletal growth to slow with age. We previously found that hypothyroidism in rats slowed both growth plate chondrocyte proliferation and growth plate senescence, suggesting that senescence is not dependent on age per se but rather on chondrocyte proliferation. However, one alternative explanation is that th...
متن کاملMicrobial physiology and ecology of slow growth.
The uptake capabilities of the cell have evolved to permit growth at very low external nutrient concentrations. How are these capabilities controlled when the substrate concentrations are not extremely low and the uptake systems could import substrate much more rapidly than the metabolic capabilities of the cell might be able to handle? To answer this question, earlier theories for the kinetics...
متن کاملSlow crack growth: models and experiments
The properties of slow crack growth in brittle materials are analyzed both theoretically and experimentally. We propose a model based on a thermally activated rupture process. Considering a 2D spring network submitted to an external load and to thermal noise, we show that a preexisting crack in the network may slowly grow because of stress fluctuations. An analytical solution is found for the e...
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ژورنال
عنوان ژورنال: American Journal of Botany
سال: 1920
ISSN: 0002-9122
DOI: 10.1002/j.1537-2197.1920.tb05587.x