probiotics are defined as living microorganisms with beneficial effects on the host. probiotics, according to the least negative effect on the body, are considered as a good alternative to chemical drugs. lactobacillus acidophilus is used as a probiotic that is able to reduce cholesterol level in the blood. the effect of various concentrations of carbon, nitrogen and phosphorus for enhancing th...

using surface analysis, simultaneous effects of temperature (260-380ºc) and ethanol concentration (0-1%) on dimethyl ether (dme) selectivity, yields of hydrocarbon and dme, and methanol conversion were investigated in methanol dehydration reaction over γ-al2o3 catalyst. methanol conversion and yield of hydrocarbon/dme were found to be significantly affected by temperature and the temperature-et...

The Engineering data of tiger nut cultivated in Africa is high importance facilitating the design machineries for its effective and efficient cultivation, processing, handling, storage, postharvest activities general. This study aimed at determining modeling physical compressive test properties nuts as influenced by size, moisture level loading pattern. Applying Standard procedures a 3,4,3 resp...

In this research, the performance and kinetics of an iron/manganese oxide catalyst in a fixed-bed reactor by Fischer-Tropsch Synthesis is studied. The range of operating conditions are; P = 1 – 12 bar, T = 513 - 553 K, H2/CO ratio = 1 - 2 and GHSV = 4200 – 7000 ((〖cm〗^3 (STP))/h/g_cat). The effect of these independent variables, on Fischer-Tropsch product were performed by using a statistical m...

The presence of humic acid (HA) in water treatment processes is very harmful and the cause of undesirable color, taste, and smell. Drinking water containing high concentrations of humic substances can be the cause of many health problems. Therefore, the removal of these compounds from water resources is a very important topic. In this research, response surface methodology (RSM) has been used t...

Diamond, because of its high modulus of elasticity, chemical inertness and exceptionally high hardness, is ideal for obtaining fine surface finish and accuracy. Today’s requirement of high precision parts like magnetic memory device, laser equipment, electrostatic copier, printing machine, etc., made of non-ferrous materials, such as aluminum, copper and resin demands very high surface finish. ...

Recent research has demonstrated the effectiveness of complex skeletal primitives such as subdivision curves and surfaces in implicit surface modeling. This paper presents a hierarchichal modeling system with an automatic levels of detail management for a simpler modeling with an accelerated rendering. We manage levels of detail with smooth transitions and tree optimizations speeding up visuali...