منابع مشابه
Determinants of axial osmotic gradients in the differentiating countercurrent system.
The renal medullary countercurrent system differentiates into its final segmental nephron function and geometry during perinatal development. The influence of these changes on the medullary longitudinal osmotic gradient cannot be evaluated by experimental studies. Therefore, a computation analysis using a differential equation model of the renal countercurrent system was applied to quantitate t...
متن کاملFurther information on the cortical countercurrent system in rat kidney.
Receintly we reported the existence of a cortical countercurrent system on the surface of the rat kidney(l). The countercurrent system is arranged in suclh a way that proximal tubular fluid andl efferent peritubular blood flow in opposite directions. The following findings may be cited in support of this thesis. 1. The superficial nephrons of the rat kidney are characterized by an efferent arte...
متن کاملCountercurrent Chromatography and High Speed Countercurrent Chromatography: Instrumentation
Engelsma M, KokWT and Smit HC (1990) Selective determination of trace levels of phenol in river water using electrochemical concentration modulation. Journal of Chromatography 506: 201}210. Fister JC, Jacobson C and RamseyM (1999) Ultra sensitive cross correlation electrophoresis on microdevices. Analytical Chemistry 71: 4460}4464. Kaljurand M and KuK llik E (1989) Computerized Multiple Input C...
متن کاملSpiral countercurrent chromatography.
For many years, high-speed countercurrent chromatography conducted in open tubing coils has been widely used for the separation of natural and synthetic compounds. In this method, the retention of the stationary phase is solely provided by the Archimedean screw effect by rotating the coiled column in the centrifugal force field. However, the system fails to retain enough of the stationary phase...
متن کاملMultistage Countercurrent Distribution
(1997) Analytica Chimica Acta 344: 241}249. 23. Llompart MP, Lorenzo RA, Cela R, PareH JRJ, BeH langer JMR and Li K (1997) Journal of Chromatography A 757: 153}164. 24. Llompart MP, Lorenzo RA, Rosa A, Cela R, Li K, BeH langer JMR and Pare JRJ (1997) Journal of Chromatography A 774: 243}251. 25. Chee KK, Wong MK and Lee HK (1996) Journal of Liquid Chromatography and Related Technology 19: 259}2...
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ژورنال
عنوان ژورنال: Kidney International
سال: 1990
ISSN: 0085-2538
DOI: 10.1038/ki.1990.261