F-aggregate centers F2+ centers order of reaction lifetime O2--FIt has been reported since 1978 that the thermal stability of the laser active F+2 centers in alkali halides could be increased by doping with oxygen, hydroxyl and some divalent metal ions, and the mechanism of these effects wer...
The concentration of sodium ions in the blood is directly related to the regulation of safe body fluid levels. And while we are all familiar with its many uses in cooking, we may not be aware that this element is used in some 14,000 commercial applications. From manufacturing pulp and ...
(Chemistry) potential of hydrogen; a measure of the acidity or alkalinity of a solution equal to the common logarithm of the reciprocal of the concentration of hydrogen ions in moles per cubic decimetre of solution. Pure water has a pH of 7, acid solutions have a pH less than 7, and alk...
摩尔浓度
concentration, in chemistry, measure of the relative proportions of two or more quantities in a mixture. The concentration of a solute is very important in studying chemical reactions because it determines how often molecules collide in solution and thus indirectly determines the rates of reactions ...
Noun1.hydrogen ion concentration- the number of moles of hydrogen ions per cubic decimeter concentration- the strength of a solution; number of molecules of a substance in a given volume pH,pH scale- (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in ...
The buildup of hydrogen (H+) ions into the interior of the thylakoid makes this space more positively charged than the surrounding stroma. This difference in the charge across the thylakoid membrane, and the concentration of the hydrogen ions, is called an electrochemical gradient. Definition: Ele...
since the concentration of free charges and the strength of the charge interaction grows proportionally with pressure. Consequently, the measured signal is maximal at the gas pressure that maximizesp〈x〉, which for most intensities in our study is in the range of 1–10 mbar (see also Fig...
To better explain the changes in the pharmaceutical EfOM during the COP, the SOP was also studied. SOP and COP were both carried out in a semi-continuous mode in a 1.2 L plexiglass reactor at room temperature by continuously bubbling a mixture of ozone/oxygen (inlet ozone concentration 2...
titer, titre - the concentration of a solution as determined by titration hydrogen ion concentration - the number of moles of hydrogen ions per cubic decimeter molal concentration, molality - concentration measured by the number of moles of solute per kilogram of solvent molar concentration, molarity...