The present study aims to evaluate the role of TQ on the oxidative damage induced by ACR in rat testes. The administration of ACR resulted in elevation in testes MDA and NO levels and significant reduction in the level of GSH and the activity of SOD and CAT. Also, plasma testosterone was significantly elevated in ACR-treated rats as compared with negative control. These biochemical changes were associated with congestion and interstitial edema,necrosis, calcification and degeneration of spermatogenic cells and formation of spermatid gaint cells. Co-treatment with TQ ameliorates these biochemical and histological changes. In conclusion, supplementation with TQ as antioxidant may offer protection against ACR induced testicular toxicity.

The general public is exposed to acrylamide from industrial manufacturing, laboratory work, foods rich in carbohydrates that have been cooked at hightemperature,and through cigarette smoke. The present experiment was conducted to investigate the reproductive toxicity of acrylamide exposure in male rats and the role of L-cysteine supplementation in amelioration of this toxicity.

Radiative effect on natural convection flows in porous media is studied

Lars Eivind Augland, Mohamed Ali Abu El-Rus, Gamal Yehia Boghdady, (2010): Repeated magmatic pulses in the East African Orogen of Central Eastern Desert, Egypt: an old idea supported by new evidence.

NULL

A regular perturbation analysis is presented for the following laminar natural convection flows of Newtonian fluids

Propionic acid modified bagasse was used for the removal of reactive yellow 2 and reactive blue 4. The effects of pH, contact time, initial dye concentrations, adsorbent particle size and adsorbent dose on the adsorption of the two dyes were investigated. Additionally, the desorption process and intra-particle diffusion were studied. Acidic pH values were favorable for adsorption of both dyes. The equilibrium adsorption data were best fitted with the Freundlich isotherm for reactive yellow 2 and the Langmiur isotherm for reactive blue 4. The values of their corresponding constants were de-termined. The kinetic for dye adsorption is well described by a pseudo-first order kinetic model for the reactive yellow 2 and by pseudo-second order for the reactive blue 4. The investigation revealed that the hydroxyl groups of bagasse and the carboxylic group of propionic acid play a great role in the removal of both reactive dyes.

This research work involved the use of the low cost, available and renewable biosorbent propionic acid pretreated bagasse for the removal of the textile direct yellow 12 and direct red 81 dyes from aqueous solutions. Batch experiments were carried out for sorption kinetics and isotherms of the two dyes. The studied operating variables include initial pH, contact time, initial dye concentration, adsorbent dose and particle size. Maximum color removal was in acidic medium (pH 2.5-3.5) where a greater percentage removal was observed in this pH range. Equilibrium isotherms were applied using Langmuir and Freundlich models of adsorption and it was found that the Langmuir isotherm was the best model for adsorption of direct yellow 12 whereas the Freundlich model was suitable for adsorption of the direct red 81. The kinetics of adsorption of both dyes was consistent with a pseudo-first order kinetic for the direct yellow 12 and a pseudo-second order for the direct red 81. Desorption of both dyes is greatly dependent on the pH value of the solution with which the bagasse loaded dye in contact. The percent dye removal increases with the pH increase.