abstract: in this study, it has been tried to test the accuracy of output and hence the model efficiency in the predictions of 24 and 48 hour precipitation forecasting by choosing different schemes be assessed. therefore, in order to test the accuracy of model product, two conditions of rainfall precipitation and lack of rainfall precipitation were considered. four thresholds were taken. adapti...

â  abstract â  in this study by data of synoptic stations in karoon basin, the intensive showers with 1,2,6 and 9 hour duration have been extracted and the precipitation time regime has been evaluated by ranking method and non dimensional accumulation curve. in ranking method, first the showers of each time base have been divided to smaller periods and on this basis different periods of showers...

Estrogenic regulation of gene expression involves interaction of the hormonewith its receptors, which undergostructuraland conformational changes to interact with specific DNA sequences. Putrescine, spermidine, and spermine, are ubiquitous cellular components. We studied the effects of these polyamines on rabbit uterine estrogen receptors by sucrose gradient centrifugation and ligand dissociati...

Primary cortical astrocytes were belated from normal (+1+), heterozy gous (+1—), or homozygous(—/—)p53-knockout mice.The normal astro cytes grew slowly and underwent crisis after limited division, while the homozygously defective cells grew rapidly and without contact inhibition. These —I— cells could not initially form colonies in soft agarose but acquired this capability after 10 pa...

Objective—To examine the eVect of concomitant intake of â blockers with angiotensin converting enzyme (ACE) inhibitors, diuretics, or both on plasma renin concentrations in a population based sample (MONICA survey, Augsburg, Germany). Subject and methods—728 individuals were studied, of whom 171 were treated using monotherapy (ACE inhibitor (n = 21), diuretic (n = 10), or â blocker (n = 72)), o...

Sialic acid has been shown to contribute significantly to the cell-surface charge of tumor cells. In order to elucidate the chemical nature of the sialic acid-containing molecules present on the tumor cell surface, a procedure for the isolation of a Sialoglycopeptide fraction from the surface of Novikoff ascites cells has been developed. Digestion of tumor cell suspensions with papain liberates...

Author(s) of this paper may load this reprint on their own web site provided that this cover page is retained. Republication of this article or its storage in electronic databases or the like is not permitted without prior permission in writing from the IUCr. Small-angle X-ray scattering (SAXS) measurements have been performed to study helium-bubble formation in borosilicate glass. Helium was i...

Proper implementation of direct injection clearance techniques to measure tumor blood flow (TBF) requires knowledge of the tracer distri bution because TBF distribution is often inhomogeneous. Therefore, deuterium nuclear magnetic resonance imaging was used to follow tracer (HOD) distribution after direct injection of 10-40 ß\ isotonic saline/D2O into RII -I tumors. Within 2 to 4 min after int...

â â â  in this study, ability and skill of the nesting version of the regcm3 regional climate model in simulation of monthly and seasonal amount of precipitation and temperature using four different cumulus parameterization of grell-as, grell-fc, emanuel and kuo have been studied over khorasan area including three provinces of north khorasan, khorasan razavi and south khorasan. in this regards,...

the weaknesses of the traditional climatic classification methods in presenting the climatic realities of caspian region and showing the new methods' merits based on multivariate statistical methods, and geographical information system in presenting the climatic regions of caspian, are among the most important ideas of conducting this study. to do so, we used the data of synoptic stations ...