Cardiac hypothermia alters contractility and intracellular Ca2+ concentration ([Ca2+]i) homeostasis. We examined how left ventricular pressure (LVP) is altered as a function of cytosolic [Ca2+]iover a range of extracellular CaCl2 concentration ([CaCl2]e) during perfusion of isolated, paced guinea pig hearts at 37°C, 27°C, and 17°C. Transmural LV phasic [Ca2+] was measured using the Ca2+ indicat...

ntroduction: The use of a calcium solution previously to brushing could favor the remineralization and the fluoride (F) uptake in dental enamel. Objective: This study evaluated the F in dental enamel after using a F dentifrice, preceded or not by a rinse with a CaCl2 solution. Methods: Ten subjects (18-30 years) participated in a double-blind, cross-over protocol. Enamel biopsy and 3 min saliva...

we examined cadmium (0.1 mmol/l) toxicity and effect of different calcium concentrations (0.1, 1.0, and 10.0 mmol/l) on the growth of organs (root, mesocotyl and coleoptile) of 4-day-old maize seedlings in hydroponic cultures. The influence of both metals on distribution of cadmium, calcium, potassium and sodium in the organs of maize seedlings was also studied. Calcium at a concentration of 1....

DNA manipulation routinely requires competent bacteria that can be made using one of numerous methods. To determine the best methods, we compared four commonly used chemical methods (DMSO, MgCl2-CaCl2, CaCl2 and Hanahan's methods) on frequently used Escherichia coli (E. coli) strains: DH5α, XL-1 Blue, SCS110, JM109, TOP10 and BL21-(DE3)-PLysS. Hanahan's method was found to be most effective for...

In this study, various mineral supplements, such as chloride salts (CaCl2, MgCl2, MnCl2, FeCl2 and KCl) supplying cations and calcium salts (CaCl2, CaCO3, CaSO4, Ca(OH)2 and CaHPO4) supplying anions, were tested if they could stimulate the sporulation of Clostridium sporogenes, a surrogate microorganism for C. botulinum. Of the cations tested, the addition of CaCl2 showed a slightly, but not si...

Superficial scald of pear fruit is a physiological disorder that easily occurs during cold storage and seriously affects eating quality commodity value. It important to study the mechanism superficial disorder. Our previous reported incidence calcium chloride (CaCl2)-treated was significantly lower than untreated fruit. In this study, we found accumulation lignin in CaCl2-treated The expression...

Objetivou-se com o presente estudo estabelecer uma metodologia para a conservação de grãos pólen da Carnaúba (Copernicia prunifera (Miller) H.E. More). A viabilidade dos pólen, recém-liberados, foi avaliada pelas técnicas coloração por carmim acético 1%, Reativo Alexander e lugol. taxa germinação in vitro verificada através três meios cultura: M1: 100g L-1 sacarose; 10g ágar; M2: 500mg H3BO3; M...

ZA fertilizer waste (Ammonium sulfate) is generated from the industrial process of producing fertilizer. The contains very high calcium and has potential to be used as a raw material in manufacture Precipitated Calcium Carbonate (PCC). PCC with certain qualities can developed field advanced materials, size modification into nanoparticles. One method produce nanoparticles using coprecipitation m...

Electrodeposition of silicon in molten CaCl2 has been drawing increasing attention. Soluble silicate anions the melt can be reduced and tailored into functional materials. To ensure a precise control electrochemical processes, comprehensive knowledge on soluble is indispensable. Here, we clarify formation behavior by dissolving solid CaSiO3 Ca2SiO4 at temperatures from 1047 K to 1233 (774 °C 96...