Nongrey radiation effects on the boundary layer of an absorbing gas over a flat plate

Nongrey radiation effects on boundary layer of absorbing gas over flat plat

Changes in some blood parameters in lactating female rats and their pups exposed to lead: effects of vitamins C and E

The present work was designed to examine the changes in some blood parameters in lactating rats treated with lead acetate (10 mg /kg B.W. orally) and its interaction with vitamin E (600 mg/kg diet) or vitamin C (100 mg/kg B.W. orally) during lactation period (20 days) and their pups. Administration of lead acetate to the female lactating rats caused a significant decrease in packed cell volume (PCV), hemoglobin concentration (Hb), red blood cell count (RBC), body weight, mean corpuscular heamoglobin concentration (MCHC) whereas the white blood cells count (WBC), total proteins, the percentage of monocyte and mean corpuscular volume(MCV) significantly increased administration of lead acetate to female lactating rats produced a significant decrease in PCV, Hb, RBC, MCHC, body weight, and the percentage of the neotrophils in their pups. But the WBC count, total proteins, the percentage of lymphocyte, monocyte, MCV a significantly increased in their pups. Treatment dams with vitamin E concomitantly with lead acetate increased the PCV, Hb, MCHC, whereas percentage of monocyte significantly decreased, PCV, Hb, RBC, the percentage of neutrophils a significantly increased, whereas WBC count, the percentage of lymphocyte decreased significantly in their pups of this group of dams. Treatment dams with vitamin C concomitantly with lead acetate significantly increased the PCV, MCV, whereas percentage of monocytes significantly decreased, but Hb, PCV and RBC significantly increased in their pups. It could be concluded that treatment female lactating rats with vitamin E or C concomitantly with lead acetate exert an antioxidant effect on blood constituent in dams and their pups and vitamin E more effective than vitamin C

Effect of treating lactating rats with lead acetate and its interaction with vitamin E or C on neurobehavior, development and some biochemical parameters in their pups

The current study investigated the effect of administration of vitamin E (600mg/ kg diet) concomitantly with lead acetate (10mg/kg, orally) and vitamin C (100mg/kg, orally) concomitantly with lead acetate (10mg/kg, orally) to the female lactating rats on the neurobehavioral, landmarks development and some biochemical tests in their pups. Administration of lead acetate to the female lactating rats caused a significant increase in open field activity test including (the number of squares crossed and rearing test within 3 minutes), olfactory discrimination test, triglycerides and malondialdehyde brain tissue, with a significant decrease in glutathione brain tissue and high density lipoproteins in their pups. The present study demonstrated that treatment of female lactating rats with vitamin C and lead acetate produced a significant decrease in righting reflex test in their pups. Administration of vitamin E concomitantly with lead acetate to the female lactating rats caused a significant increase in glutathione level accompanied with a significant decrease in malondialdehyde and triglycerides levels in their pups. The present study showed that treatment of female lactating rats with vitamin E or C with lead acetate produced a significant decrease in rearing test, whereas a significant increase in high density lipoproteins in their pups. It is concluded that administration vitamin E or C to the female lactating rats reverse the adverse effects produced by lead acetate on neurobehavioral. Vitamin E had positive effect on the levels of glutathione, malondialdehyde brain tissue, triglyceride and high density lipoproteins in their lactating pups

Forecasting wind speed data by using a combination of ARIMA model with single exponential smoothing

Wind serves as natural resources as the solution to minimize global warming and has been commonly used to produce electricity. Because of their uncontrollable wind characteristics, wind speed forecasting is considered one of the best challenges in developing power generation. The Autoregressive Integrated Moving Average (ARIMA), Simple Exponential Smoothing (SES) and a hybrid model combination of ARIMA and SES will be used in this study to predict the wind speed. The mean absolute percentage error (MAPE) and the root mean square error (RMSE) are used as measurement of efficiency. The hybrid model provides a positive outcome for predicting wind speed compare to the single model of ARIMA and SES

Rearrangements and Dilatancy for Sheared Dense Materials

Constitutive equations are proposed for dense materials, based on the identification of two types of free-volume activated rearrangements associated to shear and compaction. Two situations are studied: the case of an amorphous solid in a stress-strain test, and the case of a lubricant in tribology test. Varying parameters, strain softening, shear thinning, and stick-slip motion can be observed.Comment: 4 pages, 3 figure

Theory of low transitions in CO discharge lasers

A self consistent theoretical model which couples the electron and heavy particle finite rate kinetics with the optical and fluid dynamic processes has been employed to identify the various parameters and explain the mechanism responsible for producing low lying transitions in slow flowing CO lasers. It is found that lasing on low lying transitions can be achieved at low temperatures for low pressures (or low flow rates) together with high partial pressures of the He and N2. The role of N2 has been identified as an additive responsible for reducing the electron temperature to a range where the transfer of electrical power to the lower vibrational modes of CO is optimum