Results 171 to 180 of about 10,817 (193)

Development of glomerular hyperfiltration, a multiphasic phenomenon

American Journal of Physiology-Renal Physiology, 2020
The trajectory of glomerular filtration rate (GFR) in relation to glomerular hyperfiltration (GHF) has been unknown. It was evaluated retrospectively in 23,982 GHF-free health examinees who were followed for 2−10 yr (mean: 5.1 yr). GFR was estimated by the serum creatinine concentration, and GHF was defined as age- and sex-specific estimated GFR (eGFR)
Yasuho Shimada, Yasuto Nakasone, Kazuko Hirabayashi, Takahiro Sakuma, Hideo Koike, Tomomasa Oguchi, Koh Yamashita, Ryo Uchimido, Tatsumi Moriya, Mitsuhisa Komatsu, Toru Aizawa   +10 more
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Material transport in hyperfiltration

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1983
Transport equations for hyperfiltration, based on the frictional formalism of non-equilibrium thermodynamics, are derived for a gel-type membrane. Taking the concentration distribution in the membrane into account and allowing for possible non-equilibrium partition effects at the membrane boundaries, the flow equations are integrated and equations for ...
openaire   +2 more sources

THE HYPERFILTRATION HYPOTHESIS IN HUMAN RENAL TRANSPLANTATION

Transplantation, 1994
The hyperfiltration hypothesis postulates that kidneys with reduced renal mass will progress toward failure due to hypertrophy of the remaining nephron to meet the excess load, eventually leading to nephron exhaustion. Five conditions in which hyperfiltration might be suspected were studied in human kidney transplantation: (1) small kidneys from donors
Cecka Jm, David W. Gjertson, PaulI. Terasaki, H. Koyama   +3 more
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A morphological approach to desalination in hyperfiltration

Desalination, 1978
Abstract A morphological model or qualitative theory of membrane desalination action which may be employed to predict probabilities or to generate new ideas, is a useful tool in undertaking membrane development. Presently available theories do not explain the role of membrane material/structure variation vs.
Sanderson R.D., Pienaar H.S.
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Hyperfiltration through cross-linked monolayers

Thin Solid Films, 1983
It is proposed to use cross-linked Langmuir-Blodgett (LB) films for filtration purposes, e.g. for reverse osmosis, pervaporation and gas separation, and as substrates for the incorporation of ionophors and pore molecules. Surfactants were synthesized with glucose and cellobiose residues as hydrophilic head groups. The surfactants were spread onto an
Ch. Strobl, S. Bauer, K.D. Heckmann
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Solute–membrane interactions in hyperfiltration

Journal of Applied Polymer Science, 1987
The performances of several composite membranes (PEC-1000, Teijin, HR-95, HR-98) and one asymmetric membrane (Solrox SC-200) in hyperfiltration are compared at 25°C using different aqueous feed solutions (0.1M and 0.5M NaCl, 0.5M 1,3-and 1,4-dioxan, 0.1M benzyl alcohol and 2-methoxybenzyl alcohol, 1,2- and 1,4-butandiol, and Triton feed solution).
J.-Y. Chen, W. Pusch
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Hyperfiltration and Calcium Metabolism in Essential Hypertension

American Journal of Hypertension, 1991
To test the hypothesis that hyperfiltration in essential hypertension is linked to alterations in calcium metabolism, we studied the relationship between urinary calcium excretion and glomerular filtration rate (GFR, creatinine clearance) in 38 untreated essential hypertensives on a free diet.
Saverio Parlongo, Daniela Leonardis, Carmine Zoccali, F. Salnitro, Francesca Mallamaci, Maurizio Postorino, Fiorella Cuzzola   +6 more
openaire   +3 more sources

Sodium restriction corrects hyperfiltration of diabetes

American Journal of Physiology-Renal Physiology, 1988
The effect of a low-sodium diet on the abnormal glomerular hemodynamics of early diabetes was studied in rats. Starting 5 to 7 days after onset of streptozotocin-induced insulin-dependent diabetes mellitus (IDDM), rats were fed a low-sodium diet for 4-5 days. Normal rats fed the same diet served as controls. Micropuncture measurements were made during
B. M. Wilkes, N. Bank, G. Lahorra, H. S. Aynedjian   +3 more
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Hyperfiltration-induced precipitation of calcite

Geochimica et Cosmochimica Acta, 1985
Abstract Hyperfiltration is sometimes cited as a mechanism to explain high degrees of calcite cementation at shale/sandstone contacts. To test this cementation mechanism, a series of experiments were performed in which solutions undersaturated with respect to calcite were hydraulically forced through a Ca-bentonite at different flow rates.
Craig D. Eady, Steven J. Fritz
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Streaming Potentials During Hyperfiltration [PDF]

, 1971
The theoretical and experimental studies of hyperfiltration of electrolytes through charged membranes indicate the important role of the potentials developed across the membranes. These potentials were measured directly with a pair of reversible electrodes under conditions of stationary hyperfiltration.
G.B Tanny, E. Hoffer, Ora Kedem
openaire   +1 more source