Turbulent erosion has been proposed as a major mechanism for removing wintertime cold-air pools (CAPs) from basins and valleys. The time scales involved in this erosion process, which are of great interest for winter weather forecasting, have not been studied systematically in the past. In this short contribution, a semi-analytical model is developed to estimate the time required for the dissip...

Introduction: D-galactose (D-gal) is well known as an appropriate agent to induced aging effects in the in vivo and in vitro models. In the present study, we selected crocin, the main constituent of Crocus sativus L. (Saffron), against D-gal cytotoxicity in human neuroblastoma SH-SY5Y cells. Materials and Methods:  Cells were pretreated with crocin (25-500 µM) for 24 h and then expos...

this study was conducted to evaluate the bioavailability of nano and micro sources of manganese in broiler chickens. two hundred and eight, 10-d-old male ross 308 broilers in a completely randomized design with 13 treatments, 4 replications and 4 chicks per replicate were studied for 35 days. during the experimental period, a basal corn-soybean meal diet containing 20 ppm mn (control treatment)...

Current imaging technique such as micro X-ray CT can provide us detailed 3D micro-structures of porous rocks that can be used in numerical simulation so as to predict elastic properties of rocks saturated with different fluids. However, limited by the resolution the imaging process can provide, we usually lose the small features of rocks such as cracks and micro-pores, consequences of which can...

it is very important to study and simulate s-wave structure for near surface (alluvium parts, in particular) owing to its direct relationship to urban facilities in geotechnical and earthquake engineering studies. so, in seismic microzonation, the first step is to study and identify s-wave pattern in alluvium in order to categorize different parts of cites according to s-wave velocity. current ...

in this research we have studied tabriz temperature inversion using radio-sound information, during the 2004-2008 periods in daily, monthly and seasonally scales. produced data associated with temperature inversion daily of the surface (2 meters) to 700 h.pa. several different measures are used, including the height of the base and the height of the top of the inversion, the temperature at the ...

The genesis of the T wave of the electrocardiogram is ill understood. It represents ventricular repolarization, and is thus dependent on changes occurring at cell membrane level. It is the most labile component of the QRST complex and is affected by many physiol6gical, neuro-humoral, and physical factors in health, as well as being the most sensitive index of disease. One of the most interestin...