نتایج جستجو برای: diurnal photosynthesis
تعداد نتایج: 33562 فیلتر نتایج به سال:
In the first side-by-side large-scale trials of these two C(4) crops in the U.S. Corn Belt, Miscanthus (Miscanthus x giganteus) was 59% more productive than grain maize (Zea mays). Total productivity is the product of the total solar radiation incident per unit land area and the efficiencies of light interception (epsilon(i)) and its conversion into aboveground biomass (epsilon(ca)). Averaged o...
A good understanding of the diverse mechanisms in the atmosphere is required in modelling the climate. In this study, the diurnal and seasonal patterns of all-sky downward longwave radiation (DLR) at Ilorin (8o 32l N, 4o 34l E), Nigeria were investigated alongside relative humidity (RH) and temperature. The average diurnal pattern of DLR gives an arc that begins by increasing gradually with som...
The exchange fluxes of carbon dioxide between wet arctic polygonal tundra and the atmosphere were investigated by the micrometeorological eddy covariance method. The investigation site was situated in the centre of the Lena River Delta in Northern Siberia (7222 N, 12630 E). The study region is characterized by a polar and distinctly continental climate, very cold and ice-rich permafrost and its...
Forty four children with daytime wetting were included in a randomly controlled trial of two alarm devices, a contingent one that sounded when wetting occurred and a non-contingent one that went off from time to time unrelated to wetting events. A quota allocation system ensured comparability between treatment groups. Two thirds responded to an alarm by becoming dry. The non-contingent alarm pr...
Twenty-seven children with diurnal enuresis were studied in a double-blind randomised controlled trial of imipramine. Outcome was not related to such features as age, gender, maximum functional bladder capacity, or evidence of psychiatric disturbance. Although the condition in several children improved, no evidence emerged to suggest that imipramine was superior to placebo in the treatment of t...
Plant growth is controlled by an interplay of internal and external factors. The production biomass via photosynthesis dependent on the plant response to environmental variables such as temperature, vapour pressure deficit light intensity. Short-term responses these at fine temporal scales hours are not well investigated, especially under field conditions. present study explores relationship be...
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