Resonance light scattering (RLS) intensity of silver nanoparticles in the presence of sodium dodecylsulphate was quenched on addition of sulfasalzine. The quenching extent was shown to be proportional to the sulfasalazine concentration. Effect of different parameters such as pH, volume and kind of buffer, silver nanoparticles concentration, sodium dodecylsulphate (SDS) concentration, and w...

Optimization of the continuous fermentation process is important for increasing efficiency and decreasing cost, especially complicated biochemical processes described by substrate product inhibition. The optimum design (minimum volume) CSTRs in series assuming inhibition was determined this study. effect operating parameters on investigated. concentration feed to first reactor N reactors series...

To test the hypothesis that haemoglobin concentration is a poor predictor of benefit from transfusion in preterm infants, and that red cell volume is the most important indicator of anaemia, 24 preterm infants receiving red cell transfusions had red cell volume, haemoglobin concentration, and cardiac output measured before and after transfusion. Red cell volume was measured either using dilutio...

Insulin-like growth factor-I (IGF-I) and -II are important local regulators of bone metabolism, but their role as determinants of human bone mass is still unclear. In the present study, we analyzed the concentration of IGF-I and -II in the bone matrix of 533 human biopsies from the iliac crest that were obtained during surgery for early breast cancer. There was an inverse association of bone ma...

In this study, three different age groups of male broodstocks (4, 5 and 6 years respectively) were used to fertilize eggs obtained from nine females. The results showed that 6 year old males had maximum body weight (1766 g), total length (56.3 cm) and sperm volume (31.83 ml). Results did not show significant difference in spermatocrit and spermatozoa concentration among age groups (p>0.05). Our...

We investigate volume phase transition in gels immersed in mixture solvents, on the basis of a three-component Flory-Rehner theory. When the selectivity of the minority solvent component to the polymer network is strong, the gel tends to shrink with an increasing concentration of the additive, regardless of whether it is good or poor. This behavior originates from the difference of the additive...

In this paper, the initial susceptibility of e-Fe3N magnetic fluid at volume concentrations in the range F = 0.0 ~ 0.0446 are measured. Compared with the experimental initial susceptibility, the Langevin, Weiss and Onsager susceptibility were calculated using the data obtained from the low concentration e-Fe3N magnetic fluid samples. The viscosity of the e-Fe3N magnetic fluid at the same concen...

In this paper, the initial susceptibility of e-Fe3N magnetic fluid at volume concentrations in the range F = 0.0 ~ 0.0446 are measured. Compared with the experimental initial susceptibility, the Langevin, Weiss and Onsager susceptibility were calculated using the data obtained from the low concentration e-Fe3N magnetic fluid samples. The viscosity of the e-Fe3N magnetic fluid at the same concen...

Intra-axonal accumulation of sodium ions is one of the key mechanisms of delayed neuro-axonal degeneration that contributes to disability accrual in multiple sclerosis. In vivo sodium magnetic resonance imaging studies have demonstrated an increase of brain total sodium concentration in patients with multiple sclerosis, especially in patients with greater disability. However, total sodium conce...

pipe drain installation depth is one of the most important design parameters, which has a key role in the drained water volume and quality. in this research, the effect of pipe drain installation depth was investigated by using a physical laboratory model. drains were installed at 0.25, 0.5 and 0.85 m deep in a cubical box with dimensions of 1*0.5*1 meter filled with a sandy loam soil. nitrate,...