due to shortage of precipitation and the spatial and periodical disparity of rainfalls, iran iscounted among the arid and semi-arid countries of the world, and therefore the water utilities have put thecontrol of consumption and efficient use of water high on their priorities. water consumption management isconsidered as a field of energy management, and the impacts of effective measure related...

Artificial weathering of Angolan crude and a Heavy Fuel Oil (HFO) was performed by evaporation and photooxidation. The aliphatic, aromatic, polar and asphaltene fractions of the fresh and weathered oils were isolated. The toxicity of the water accommodated fraction or an oil/fraction dissolved in DMSO was assessed using the sea urchin embryo test. Photooxidation was observed to decrease the aro...

Jordan Normal Forms serve as excellent representatives of conjugacy classes matrices over algebraically closed fields. Once we know normal forms, can compute functions matrices, their main invariants, etc. The situation is more complicated if search for forms fields that are not and especially rings.

The effect of pre-heat treatments, followed by a hot forging process, on the microstructure and strength of Co–Cr–Mo alloys was investigated. Four pre-heat treatments were conducted at 1170, 1200, 1230 and 1260 C for three different time condition: 2, 6 and 15 h and then water cooled to room temperature. Tensile tests and XRD analyses were carried out on both as-cast alloy and heat-treated allo...

We consider exact matrix decomposition by Gauss-Bareiss reduction. We investigate two aspects of the process: common row and column factors and the influence of pivoting strategies. We identify two types of common factors: systematic and statistical. Systematic factors depend on the process, while statistical factors depend on the specific data. We show that existing fraction-free QR (Gram–Schm...

This study evaluated immunomodulatory properties and the sub-acute toxicity profile of two fractions of the aqueous alcoholic extract of the dried calyx of Hibiscus sabdariffa in experimental animals. Immunomodulatory activity was evaluated using red blood cell-induced immunostimulation. The fractions were not found to be toxic after 7-day administration, though there was severe weight loss wit...

An extraordinary high-speed synthesis of gold nanoparticles (AuNPs) was discovered by synthesizing the AuNPs in ethanol-water mixtures using a solution plasma process (SPP). The influence of the ethanol mole fraction (χethanol) in the ethanol-water mixtures on the reduction rate of gold chloride ions to AuNPs under the SPP system was studied. The results indicated that the reaction rate of the ...

A major high molecular weight disulfide-linked protein has been isolated from cataractous lenses. It is only present in the water-insoluble protein fractions. This species has not been found in normal lenses of comparable age. Upon reduction of this fraction, polypeptides having molecular weights of approximately 60,000, 43,000, and 20,000 as well as a noncharacterized heterogeneous species are...

The aim of this review was to evaluate the effect of different preparations of garlic with different methodologies on prevention and control of cardiovascular disorders. Almost 30 articles and abstracts from 1990-2003 were searched through Medline. Most of the studies between 1990-1993 showed the significant reduction of TC by garlic powder but a recent controlled study in 2000 found that consu...