aims: regarding water as the main source of brio, not only its quantity and being availability is vital, but also its quality must be considered. this study was done in order to determine the correlation between physicochemical bod5 and microbiological parameters (fc and tc) in the kashan university of medical sciences wastewater effluent of activated sludge system.  materials & methods: this d...

BACKGROUND The purpose of this study was twofold: to evaluate the quantitative stability of a SPECT/CT gamma camera over time and to determine if daily flood acquisitions can reliably serve as calibration factors for quantitative SPECT. Using a cylindrical water phantom filled with measured amounts of (99m)Tc, factors were calculated to convert counts/cc to activity/cps. Measurements were made ...

To delineate the major processes associated with short water scarcity in four tall fescue species, we examined their enzymatic and nonenzymatic antioxidant activity and FaSGR expression levels. Moreover, we examined the possibility of Agrobacterium-mediated transformation of Arabidopsis P5CS1 gene in tall fescue. According to the results, proline has been introduced as an important compatible o...

A summary Is presented of theoretlcal studles almlng at a better understandlng of the coupling propertles of polypeptlde a-helical segments. and of their aggregation into bundles of various sizes capable of encloslng channels apt to transport Ions through biological membranes. The molecular aspects are stressed. INTRODUCTION Blologlcal membranes surround the cells and thelr varlous compartments...

The aim of this study was to determine cross-bridge number and kinetics in the diaphragm during fatigue and early recovery. Experiments were conducted in isolated mouse diaphragm (n=10). The force of a single cross-bridge (pi), the number of cross-bridges (m x 10(9) x mm2), the time cycle (tc) and the rate constants for cross-bridge attachment (f1) and detachment (g2) were calculated from the e...

     Developing strategies to tackle water stress in lawns in arid climate regions is significantly important. In such conditions, using growing media amendments as well as native plants can relieve drought stress in different growing stages of the plants. This study was carried out to investigate the effects of some types of soil amendments on the emergence and early seedling establishment of ...

IJABELEI) URIC ACTI) (as a 0.50 c./ml. solution in dilute fornmalin) and glucose (as a 5.0 .tc./ml. solution in saturated henzoic acid) were used. Tlmese were diluted with distilled water, and 0.20-mi. aliquots were placed in the bottom of 25-mm. test tui)es om25-nil. Erlenmeyer flasks and evaporated to dryimess. Dilutions were calculated to keep counting rates between 4000 and 2 ,000 cprn. As ...

The spin-lattice relaxation times, Ti, of H20 have been measured for the aqueous solutions of 11 apolar amino acids and 5 glycine peptides as a function of the concentration at 25 °C. The coordination numbers, nh, and the rotational correlation times, Tc , of water molecules around the amino acids and peptides were estimated and compared with that of pure water, TC°. The value of rc /Tc°=1.87 f...