نتایج جستجو برای: daytime running light
تعداد نتایج: 485727 فیلتر نتایج به سال:
Background and purpose: Sleepiness is a major public health problem. Several reasons such as shift work, long time studying, etc, are the cause of sleepiness in medical students, which affect their academic performance .The aim of this study was to assess the level of daytime sleepiness in medical students. Materials and methods : Â descriptive study designed to evaluate the daytime sleepi...
BACKGROUND Melatonin is associated with a variety of diseases in advanced age, including insomnia, depression, and dementia, and its secretion is influenced by light exposure. Although studies in young and middle-aged subjects have shown that females tend to have higher melatonin levels than males, gender differences in melatonin levels among older people remain unclear. METHODS To determine ...
The circadian biological clock is essentially based on the light/dark cycle. Some people working with shift schedules cannot adjust their sleep/wake cycle to the light/dark cycle, and this may result in alterations of the circadian biological clock. This study explored the circadian biological clock of shift and daytime nurses using non-invasive methods. Peripheral skin temperature, cortisol an...
As communities across the United States attempt to address red light running (RLR), a number of them have implemented RLR camera-enforcement programs. Since 2004, three Iowa communities—Davenport, Council Bluffs, and Clive—have implemented RLR camera-enforcement programs. The objective of this research was to evaluate the effectiveness of RLR cameras in these three Iowa communities. A reduction...
This study applied a multidimensional item response model to measure police officers’ ability on conducting red-light running enforcement. The ability to conduct red-light running enforcement was found to consist of five component constructs, including ability on mental demands (AMD), on stopping and chasing vehicle (ASC), on psychological demands (APD), on physical demands (APHD), and under ab...
The deep scattering layer (DSL) is a ubiquitous acoustic signature found across all oceans and arguably the dominant feature structuring the pelagic open ocean ecosystem. It is formed by mesopelagic fishes and pelagic invertebrates. The DSL animals are an important food source for marine megafauna and contribute to the biological carbon pump through the active flux of organic carbon transported...
While the diazotrophic cyanobacterium Trichodesmium is known to display inverse diurnal performances of photosynthesis and N2 fixation, such a phenomenon has not been well documented under different day-night (L-D) cycles and different levels of light dose exposed to the cells. Here, we show differences in growth, N2 fixation and photosynthetic carbon fixation as well as photochemical performan...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید