Absorption of ammonia from the gastrointestinal tract results in problems that range from hepatic encephalopathy in humans to poor nitrogen efficiency of cattle with consequences for the global climate. Previous studies on epithelia and cells from the native ruminal epithelium suggest functional involvement of the bovine homologue of TRPV3 (bTRPV3) in ruminal NH4+ transport. Since the conductan...

ACTIVE REABSORPTION of Na across the thick ascending limb of Henle (TALH) plays an essential role in the urine concentrating mechanism, as it generates and maintains the axial osmolality gradient in the outer medulla. Na enters the TALH cell mostly through apical Na -K -2Cl (NKCC2) cotransporters, to a lesser extent through Na /H (NHE3) exchangers, and it is extruded at the basolateral membrane...

This work presents the results of a ten-year investigation (2010–2019) on characteristics and sources precipitation pollution in typical cities locating economic belt North Slope Tianshan Mountain, Xinjiang. The water-soluble ions’ (Na+, NH4+, K+, Mg2+, Ca2+, F?, Cl?, SO42?, NO3?), neutralizing capacity, wet deposition Urumqi, Karamay Yining during 2010–2019 were compared analyzed. study showed...

Photo-activated sludge (PAS) systems are an emerging wastewater treatment technology where microalgae provide oxygen to bacteria without the need for external aeration. There is limited knowledge on optimal conditions enhanced biological phosphorus removal (EBPR) in containing a mixture of polyphosphate accumulating organisms (PAOs) and microalgae. This research aimed study effects substrate co...

An optimization algorithm was used to compute parameter values for kinetic models of NH4 transport by the renal Na-K-2Cl cotransporter (NKCC2) and K-Cl cotransporter (KCC). The optimization method finds model off-binding and translocation rate constants by minimizing the difference between model unidirectional fluxes and published data on NH4 -dependent 86Rb+ uptake by the NKCC and KCC transpor...

Yeast alpha-isopropylmalate isomerase was found to be markedly stabilized by high concentrations of glycerol and (NH4)2SO4. Such conditions of high ionic strength inhibited the enzyme, stabilized the enzyme to heat, and affected kinetic parameters. The isomerase was found to exhibit ionic strength-dependent hysteresis when enzyme, totally but reversibly inhibited by storage under conditions of ...

We compared gross N fluxes by N pool dilution in a coarse-textured agricultural soil when N was applied to the soil NH4 C pool by either: (i) mixing a NH4NO3 solution into disturbed soil or (ii) injection of NH3 gas into intact soil cores. The two techniques produced similar results for gross N mineralization rates indicating that NH4 C production in soil was not altered by soil disturbance, me...