نتایج جستجو برای: night variation
تعداد نتایج: 328528 فیلتر نتایج به سال:
The indoor thermal and humid environment of the solar greenhouse, especially air humidity, is studied by field test psychrometric chart. First, temperature relative radiation in greenhouse were tested tests. According to results, Solar has a great influence on humidity greenhouse. vary dramatically presence radiation. At night, although meets requirements crop growth, close 90%, far higher than...
Many streams and large rivers present higher ichthyoplankton densities at night. However, in some rivers this does not occur and larvae are equally abundant during the day. Larval drift diel variation is an important information for planning sampling programs for evaluating larval distribution and production. The aim of this study was to test whether the abundance of larval fish was different a...
BACKGROUND Central and peripheral vision is needed for object detection. Previous research has shown that visual target detection is affected by age. In addition, light conditions also influence visual exploration. The aim of the study was to investigate the effects of age and different light conditions on visual exploration behavior and on driving performance during simulated driving. METHOD...
The goal of this study is to investigate the possible circadian regulation of hippocampal excitability and long-term potentiation (LTP) measured by stimulating the Schaffer collaterals (SC) and recording the field excitatory postsynaptic potential (fEPSP) from the CA1 dendritic layer or the population spike (PS) from the soma in brain slices of C3H and C57 mice. These 2 strains of mice were of ...
BACKGROUND British Columbia, Canada is a geographically large jurisdiction with varied environmental and socio-cultural contexts. This cross-sectional study examined variation in motor vehicle crash rates across 100 police patrols to investigate the association of crashes with key explanatory factors. METHODS Eleven crash outcomes (total crashes, injury crashes, fatal crashes, speed related f...
Abstract Understanding the spatiotemporal variation in vegetation phenology of freshwater marshes and its response to climate change is significant evaluate global carbon cycling. Based on satellite‐derived index data, this work investigated temporal spatial spring climatic Tibetan Plateau. We found that start date growing season (SOS) showed a advancing trend 3.4 d decade −1 from 2001 2019 The...
The term urban heat island (UHI), described the phenomenon of climate change in urban areas compared with surrounding rural areas. UHI effects include: increasing in energy and water consumption, air pollution expansion and interfering in thermal comfort. Surface urban heat island (SUHI) contains patterns of land surface temperature (LST) in urban areas that has interaction with UHI in urban ca...
1. Both systolic and diastolic blood pressure show a well defined circadian variation in ambulatory hypertensive subjects. 2. Blood pressure is highest in the mid-morning (10.00 hours) and lowest during sleep at 03.00 hours. 3. Treatment with oxprenolol (taken during the day) reduces daytime blood pressure but is less effective during the night and early morning.
Circadian blood pressure changes are blunted in patients with chronic kidney disease (CKD). Proteinuria is the most important correlate of hypertension in CKD. However, little is known about the influence of circadian blood pressure changes and variation in protein excretion rate. Furthermore, the impact of blood pressure components, e.g., mean arterial pressure and pulse pressure, on proteinur...
B reast cancer has just been considered as an occupational disease in Denmark. Recent published studies showed that working on rotating night shifts was associated with a higher incidence of subsequent breast cancer among the female nurses and fl ight crews. 5,6 Many factors have association with the development of breast cancer. Some of these risk factors cannot be changed; those included age,...
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