The force development by calcium-activated skinned frog skeletal muscle fibers and the motion on a slow time base after a quick decrease in load were studied at 0-1 degrees C as a function of the ionic strength and the degree of activation. The ionic strength was varied between 50 and 190 mM by adding appropriate concentrations of KCl to the bathing solution. Under these conditions, the fibers ...

to study the effects of priming on seed germination traits of sainfoin 'eski', a factorial in randomized complete block design with three replications was conducted at the laboratory of agricultural research center of sari in 2011. treatments consisted of polyethylene glycol (peg6000) at 5 and 10%, potassium nitrate (kno3) at 5 and 10% and potassium chloride (kcl) at 5 and 10% levels ...

Contraction of detrusor smooth muscle (DSM) at short muscle lengths generates a stiffness component we termed adjustable passive stiffness (APS) that is retained in tissues incubated in a Ca(2+)-free solution, shifts the DSM length-passive tension curve up and to the left, and is softened by muscle strain and release (strain softened). In the present study, we tested the hypothesis that APS is ...

We hypothesized that there are no differences in left ventricular (LV) mechanoenergetics between after hyperpolarized cardioplegic arrest by nicorandil (nicorandil arrest) and after depolarized one by high potassium chloride (KCl arrest). The aim of the present study was to test this hypothesis using LV curved end-systolic pressure-volume relation (ESPVR) and linear pressure-volume area (PVA)-m...

This work shows that vesicles derived from the blue marlin heater organ retain a sarcoplasmic reticulum (SR) Ca(2+)-ATPase that can interconvert different forms of energy. During the hydrolysis of ATP part of the energy is always converted into heat, and the other part can be converted into work (Ca(2+) transport) or heat, depending on the temperature and the presence of KCl in the reaction med...

Kinematical conservation laws (KCL) is a system of conservation laws governing the evolution of a curve in a plane or a surface in space, even if the curve or the surface has singularities on it. In our recent publication [1] we have developed a mathematical theory to study the successive positions and geometry of a 3-D weakly nonlinear wavefront by adding an energy transport equation to KCL. T...

A culture of Pseudomonas fluorescens which grew at a minimal a(w) of 0.97 in a glucose-salts broth adjusted to that level with NaCl, KCl, or glucose, and at a(w) 0.9725 with Na(2)SO(4), was adapted to grow at lower a(w) levels produced by these solutes. Adaptation to growth at a low a(w) produced by means of one solute did not necessarily result in growth at that a(w) when another solute was em...

Calli of soybean [Glycine max cv. Pershing] were grown on "MS" media supplemented with different levels of KCl and NaH2PO4 for 45 days. The effects of salt stress were evaluated on the production and accumulation of proline and growth content of calli. Proline content increased as growth occurred. The maximum amount of proline and the highest content of growth were observed in calli grown on me...

We explore theoretically the controls on dissolution of salt A, in an under-saturated brine of salts A and B. We show that, as the concentration of B increases, the dissolution rate of A decreases, for brine of given temperature. We also show that there is a sharper decrease in dissolution rate with increasing concentration, for concentrations of B above a critical value, where B limits the equ...

The kinetics of the filipinand amphotericin-B-induced hemolysis of pig, horse and human erythrocytes in isotonic KCl, monoand disaccharide media was investigated. The kinetics of filipininduced hemolysis is of the damage type, with small changes in erythrocyte resistance to the antibiotic as the standard KCl medium is replaced by the saccharide media. The hemolysis induced by amphotericin B is ...