نتایج جستجو برای: five frequencies and five treatments as control full light
تعداد نتایج: 17601668 فیلتر نتایج به سال:
BACKGROUND Valid estimates of health-related quality-of-life (HRQoL) are often difficult to obtain from persons with Alzheimer's disease (AD) and family caregiver proxies. To help assess whether the general public can serve as an alternate source of proxy HRQoL estimates in AD, we examined whether the general public can use vignettes to discriminate between AD health states. METHODS We admini...
Background and Aim: With recent introduction of packable composites, it is claimed that they apply less stress on tooth structure because of reduced polymerization shrinkage, and similarity of coefficient of thermal expansion to tooth structure. However, the high viscosity may in turn cause less adaptation, so it is not clearly known whether these materials strengthen tooth structure or not. Th...
Light regimes vary significantly within small forest openings, rangingfrom full sunlight to total shade, and they may affect the establishment and early growth of oak seedlings. We designed modified shadehouses to simulate the complex light conditions within forest openings and tested the effects of daily photosynthetically active radiation (PAR), time of direct light exposure, and the ratio of...
BACKGROUND Generic preference-based health-related quality of life instruments are widely used to measure health benefit within economic evaluation. The availability of multiple instruments raises questions about their relative merits and recent studies have highlighted the paucity of evidence regarding measurement properties in the context of spinal cord injury (SCI). This qualitative study ex...
AIMS To investigate the feasibility of discrete choice experiments for valuing EQ-5D-5L states using computer-based data collection, the consistency of the estimated regression coefficients produced after modeling the preference data, and to examine the similarity of the values derived across countries. METHODS Data were collected in Canada, England, The Netherlands, and the United States (US...
the major aim of this study was to investigate the relationship between social and cultural capital and efl students’ critical thinking skills. this study takes this relationship in to account to see if people with different sociocultural status are different regarding their critical thinking skills. to this end, 160 university students majoring in english language and literature, english trans...
The 25th anniversary year of the Journal is an opportune time for both reflecting on the past and envisioning the future of cardiopulmonary imaging. The purpose of this special year-long feature is to provide our readers with the collective perspectives of 25 international leaders in the field regarding the following questions: 1. ‘‘What is the most influential article or advance in our special...
Statement of the Problem This study investigates the effect on the output and variability of muscular work of telling the subject that his task is "easy," "medium" or "hard," when actually the task is of uniform objective difficulty. Subjects and Apparatus The subjects were fifty men and fifty women students between the ages of eighteen and twenty-five years. The subjects of each sex were divid...
Since the development of monoclonal antibodies twenty-five years ago, researchers and biotech companies have been looking to develop therapeutic uses for them. Michael Gross looks at some of the latest efforts.
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