Background: Vitamin A (retinol) and its derivatives are essential for maintaining cell differentiation in adult organisms as well normal embryonic development fetuses. On the other hand, high amounts of vitamin known to be teratogenic. The formation urogenital structures depends heavily on retinoic acid receptors. effects low moderate dosages retinol urinary system have not been adequately stud...

The protective effect of natural bees' honey to the liver of male albino rats against melamine toxicity was studied. Melamine supplementation at a dose of 20000 ppm in the diet for 28 days induced adverse effects on the liver, decreased serum total protein and increased liver enzyme: alanine aminotransferase, aspartate aminotransferase, and alkaline phosphatase. Histological changes of the mela...

the organic deposition particularly asphaltenes has many detrimental effects on the oil industries, such as plugging in pipelines, wellbore and facilities and subsequently, considerable reduction in well productivity.asphaltenes are the most polar fractions, which they have been dispersed as colloidal clusters in crude oil. the accumulation of these clusters lead to the flocculation of colloids...

Effective cooling of blades with a nominal pressure drop is essential for performance augmentation and thermal management gas turbines. Hence, present work aimed at determining the heat transfer enhancement friction W- V-shaped ribs inside rectangular channel having hydraulic diameter ( D h ...

in this research psedomonas fluorescens as a probiotic, sodium chloride, plant extract (terminalia catappa), malachite green and formalin as antifungal agents were used daily for 19 days on rainbow trout fertilized eggs in order to compare their survival with untreated fertilized eggs in control group. results showed that the percent of live eggs (eyed) after 19 days treatment with p. fluoresce...

In this work we perform a-priori analyses of the Discontinuous Galerkin (DG) Variational Multiscale (VMS) method for Large Eddy Simulation (LES). An analytical framework is introduced to study ideal energy transfer between resolved and unresolved scales. The proposed consistent with discretization employed DG-LES simulations. concept modal eddy viscosity also which can be analysis DG-VMS or spe...

heating and sudden cooling are among the most important processes affecting temper quality in the production period of tempered auto glass. in this study, heat transfer characteristics and cooling times during the sudden cooling process of tempered glass production have been experimentally investigated. flat glass with dimensions of 50x50x4 mm has been heated up to 680 ºc in the furnace and was...

In crude oil, asphaltene is one of the fractions that may be dissolved in aromatics like benzene or toluene but cannot alkanes n-heptane, n-pentane, petroleum ether (a mixture alkane compounds). A typical difficulty oil recovery and refinery processes precipitation, which happens when stream's pressure, composition, temperature change. So, stability needs to looked at find out how likely it for...

The rheological and filtration properties of drilling mud under down-hole conditions may be very different from those measured at ambient pressures and temperatures at the surface. This paper presents the results of an experimental investigation into the temperature and salinity and pH effects on drilling mud rheological and filtration properties. Results are given from tests on water base mud ...