A Pseudomonas aeruginosa mutant derived by random mutagenesis with N-methyl-N-nitro-Nnitrosoguanidine, producing high levels of the rhamnolipid biosurfactants was selected on SiegmundWagner (SW) plates. The mutant designated P. aeruginosa PTCC1637 produces rhamnolipids at concentrations 10 time more than parent strain. NMR analysis and surface tension measurement showed that the biosurfactants...

Breast and colorectal cancers rank high in Iran as causes of mortality. Most of the current treatments are expensive and non-specific. The potential anticancer properties of common home gecko, Cyrtopodion scabrum, were investigated in this study. The effects of C. scabrum extract on proliferation, viability and migration of the colorectal cancer (SW-742), breast cancer (MCF-7) and normal (MSC) ...

ABSTRACT The geological and tectonic background of the Sabalan area in NW Iran its present-day surface processes make it ideal for examining effects shaping Earth's crust. As a result intense distribution pre-Quaternary Quaternary structures (e.g., faults, joints folds), most drainage basins southern central parts study have developed under tectonic-dominated conditions, whereas erosional are g...

Non-agaric macrofungi of Hamedan province (Iran), belonging to the genus Verpa Sw. (family Morchellaceae), were collected and identified based on morphological features (Dennis 1981 and Häffner 1991).

Understanding variation in SW (seed weigh) is of major importance in understanding SY (seed yield) variation. The objective of this study was to determine factors such as SN (seed number) per unit area, SFD (seed filling duration) and SFR (seed filling rate) and temperature, LAI (leaf area index), LAD (leaf area duration), above-ground dry matter, CGR (crop growth rate), leaf dry matter re...

estimation of reservoir water saturation (sw) is one of the main tasks in well logging. many empirical equations are available, which are, more or less, based on archie equation. the present study is an application of radial basis function neural network (rbfnn) modeling for estimation of water saturation responses in a carbonate reservoir. four conventional petrophysical logs (pls) including d...