Knowledge of microbial functioning linked to dissolved organic matter (DOM) in hypersaline lakes is limited. This study aimed understand this relationship surface and subsurface sediments how it affected by daytime night-time variability. A sampling regime, including measurements, was designed record aerobic respiration, extracellular enzyme activity (β-glucosidase, leu-aminopeptidase phosphata...

BACKGROUND Various clinical manifestations of cardiovascular diseases have a pattern of circadian variation. In this study, we investigated whether the onset and duration of paroxysmal supraventricular tachycardia (PSVT) has a circadian variation. METHODS AND RESULTS In our analysis, we included 105 patients with 498 PSVT episodes. In this study, the onset of PSVT did not have a uniform distr...

Aerosol scattering and absorption properties were continuously measured and analyzed at the urban Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing (LIESMARS) site in Wuhan, central China, from 1 December 2009 to 31 March 2014. The mean aerosol scattering coefficient σ , absorption coefficient σ , and single scattering albedo (SSA) were 377.54 Mm−1, 119.06 Mm−1, an...

the seasonal and diurnal variations in the incidence of hypertension, cerebrovascular accident, coronary heart disease were well documented, but the relation between season and daytime on the onset of aneurysmal subarachnoid hemorrhage (asah) was a subject of controversy. in the present study we aimed to evaluate the role of season of year and diurnal changes on the onset of asah. the time was ...

IN A TYPICAL workweek, one in every four manufacturing production workers in the United States is employed at night. This fraction fluctuates sharply over the business cycle, accounting disproportionately for business cycle changes in employment. The variation in work at night amounts to over 40 percent of the cyclical changes in the employment of manufacturing production workers. While cyclica...

1. The 24 h urinary excretions of Porter-Silber (P-S) chromogens, 17-hydroxycorticosteroids (17-OHCS) and free cortisol, and day-night variation of plasma P-S chromogens, were studied in normal and obese women and patients with a confirmed diagnosis of Cushing’s syndrome. 2. The mean absolute values of P-S chromogens, 17-OHCS and free cortisol were similar for the normal and obese subjects and ...

Intraspecific variation in crop responses to global climate change conditions would provide opportunities to adapt crops to future climates. These experiments explored intraspecific variation in response to elevated CO₂ and to high temperature during anthesis in Chenopodium quinoa Wild. Three cultivars of quinoa were grown to maturity at 400 ("ambient") and 600 ("elevated") μmol·mol-1 CO₂ conce...

Email: [email protected] Abstract: To evaluate the diurnal and seasonal Dissolved Oxygen (DO) variations and their effects on water quality, a comprehensive study was conducted in a eutrophic polymictic reservoir under artificially aerated and non-aerated conditions. The effect of aeration among sampling locations and along the water column of DO and DO saturation and diurnal variation...