نتایج جستجو برای: n uptake
تعداد نتایج: 1092220 فیلتر نتایج به سال:
Nitrous oxide (N2O) emissions from N fertilizer applied to row crops makes up a large portion of the greenhouse gas loading atmosphere. Guayule (Parthenium argentatum A. Gray) is desert perennial shrub being promoted for Central Arizona farmers as source natural rubber and hypoallergenic latex. Emissions N2O crop uptake have not been previously quantified in this multi-year cropping system. A 2...
Streams and rivers regulate nitrogen transport (N) to downstream ecosystems. Rates of N uptake can be high in streams, but controls on the variation in uptake rates of N among streams are not known. We measured ammonium (NH ) and nitrate (NO ) uptake velocities (Vf) and compared these with whole-reach estimates of gross primary 1 2 4 3 production (GPP) and community respiration (CR) in 11 low-n...
objective in this study, we investigated the changes of the serum levels of thyroidhormones including thyroxine (t4), triiodothyronine (t3), t3 resin uptake andthyroid stimulating hormone (tsh) in epileptic children during treatment withanti-epileptic drugs (aeds) including carbamazepine (cbz), primidone (prm),phenobarbital and valproic acid (vpa). materials and methods this study consisted of ...
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