abstract in this study, trends of threshold heavy precipitation were examined on the basis of measurements of 1437 stations (included synoptic, climatic and rain gage stations) in iran for the period of 40 years (1964-2003). for this purpose, the statistical method of nonparametric mann-kendall test is used for analyzinging the thresholds of heavy precipitation and nonparametric sen method for ...

A mathematical model for the growth of a single nanocrystal is generalised to deal with an arbitrarily large number crystals. The basic form Stefan problem, describing diffusion monomer over moving domain. Various levels approximation (an analytical solution, ordinary differential equation and N particle model) are compared shown agree well. solution then have excellent agreement experimental d...

General aspects of the problem of forecasting precipitation in northeast Colorado are discussed and the forecast area described. A precipitation day for the area is defined on the basis of the number of cooperative weather stations reporting precipitation. Variables with prognostic value in determining upslope flow and, consequently, precipitation in northeast Colorado, are discussed. To obtain...

Objective(s):The present study reports the development and validation of a sensitive and rapid extraction method beside high performance liquid chromatographic method for the determination of crocetin in human serum. Materials and Methods:The HPLC method was carried out by using a C18 reversed-phase column and a mobile phase composed of methanol/water/acetic acid (85:14.5:0.5 v/v/v) at the flow...

We evaluated the performance of a commercially available cellulose acetate electrophoretic method for quantitating high-density lipoprotein cholesterol (I) in serum by comparing it to a method involving precipitation with dextran sulfate-500/Mg2+. In both methods, enzymic reagents are used for cholesterol measurement. For electrophoretic measurement of I the mean intramembrane CV ws 4.1% (at 22...