Pichia sorbitophila, a yeast species that is highly resistant to osmotic stress in general and to salt stress in particular, was subjected to a mutagenesis strategy in order to obtain mutants deficient in the glycerol active uptake previously described. Density centrifugation was used for enrichment of NaCl sensitive mutants in either glucose or glycerol media. Several phenotypic classes of mut...

We define a level for a large class of Lorentzian Kac-Moody algebras. Using this we find the representation content of very extended A D−3 and E 8 (i.e. E 11) at low levels in terms of A D−1 and A 10 representations respectively. The results are consistent with the conjectured very extended A 8 and E 11 symmetries of gravity and maximal supergravity theories given respectively in hep-th/0104081...

The purpose of the present study was to determine the major functional, pharmacological, and regulatory properties of the flounder thiazide-sensitive Na-Cl cotransporter (flTSC) to make a direct comparison with our recent characterization of the rat TSC (rTSC; Monroy A, Plata C, Hebert SC, and Gamba G. Am J Physiol Renal Physiol 279: F161-F169, 2000). When expressed in Xenopus laevis oocytes, f...

KOTCHEN,THEODORE A., JOHN H. GALLA, AND ROBERT G. LUKE. Failure of NaHCO, and KHCO, to inhibit renin in the rat. Am. J. Physiol. 231(4): 1050-1056. 1976. -To evaluate the contribution of chloride to NaCland KCl-induced renin inhibition, renin responses to NaCl or NaHCO, and to KC1 or KHCO, loading were compared in NaCl-deprived rats. Sodium balance in animals drinking isotonic NaHCO, and NaCl f...

Membrane potentials of polysulfonated cation exchange membranes (unsupported polysulfone, SA3S and polyester supported polysulfone, SA3T) for KCl, NaCl and LiCl solutions using Ag/AgCl electrodes were measured. The measurements were carried out for, KCl SA3S or SA3T MCL, (M: K, Na and Li) systems. The concentration of salt (KCl) was kept constant in one side of the cell, C1, at 1.10 M was chang...

Abstract SLC23 family members transport either nucleobases or vitamin C. While the structure of nucleobase transporters is resolved in high detail, their mechanism not: they have been proposed, but not formally shown, to be proton-coupled symporters. Here, by establishing first vitro assay for this protein family, we demonstrate that a representative member operates as uniporter instead.

We consider the previous proposal of the author to use an extension of spacetime obtained by taking the non-linear realisation of the semi-direct product of E 11 with a set of generators belonging to one of the fundamental representations of E 11. We determine, at low levels, the symmetries that the associated point particle moving in this generalised spacetime should possess and write down the...

Soil salt crusts are special layers at soil surface which are widely distributed in the Trim Desert Highway Shelterbelt under drip-irrigation with high salinity groundwater. In order to reveal annual variation of their chemical characteristics, soil salt crusts in shelterbelt of different ages in hinterland of the Taklimakan Desert were sampled. SOM, total salt, inions and pH were analyzed. Fol...

Osmotically driven membrane processes (ODMP) are emerging water treatment and energy conversion technologies. In this work, we investigated the simultaneous forward and reverse (i.e., bidirectional) solute fluxes that occur in ODMP. Numerous experiments were conducted using ternary systems (i.e., systems containing three distinct ions) and quaternary systems (i.e., systems containing four disti...

A novel electrochemical cell has been designed and built to allow for in situ energy-dispersive X-ray diffraction measurements to be made during reduction of UO2 to U metal in LiCl-KCl at 500°C. The electrochemical cell contains a recessed well at the bottom of the cell into which the working electrode sits, reducing the beam path for the X-rays through the molten-salt and maximizing the signal...