The lower the pKa, the stronger the acid and the greater its ability to donate protons. The pH depends on the concentration of the solution. This is important because it means a weak acid could actually have a lower pH than a diluted strong acid. For example, concentrated vinegar (acetic ...
Combined with anionic polymer at pH greater than pKa of polymer; simultaneous addition; improved paper filler and short fiber retentiondoi:US20040171719 A1A starch composition is made by cooking a starch and combining the cooked starch with a polymer, the polymer containing anionic groups or ...
Combination of CalA and FSK produced a dramatically greater responses than those of the individual drugs alone, indicating an additive effect as summarized in the quantification histogram (inset). β-actin was used as loading control. Experiments were repeated at least three times. C HT-29 cells ...
The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20℃. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody, the antibody is stable for at least six weeks at 2-4 ℃备注: 本产品仅供研究实验使用,不...
driving HDAC4 to the nucleus, while prolonged stress leads to greater CaMKII-dependent nuclear export of HDAC4. This orchestrated co-regulation between PKA- and CaMKII-dependent effects is shifted in failing cardiomyocytes, where we observed increased baseline CaMKII activity and diminished PKA response...
The pKavalues for –COOH groups in M and G are 3.38 and 3.65, respectively. This results in precipitation of the soluble polymer below pH 2. However, most of the applications of alginate arise from the fact that it forms insoluble gels/precipitates withdivalentmetal ions, especially Ca2+. Th...
is related to the equilibrium constant for the dissociation of a particular acid into its conjugate base and a free proton. The pKaalso corresponds to the pH at which the corresponding acid and its conjugate base each are populated equally in solution. Given that the pKacorresponds to a transit...
the quantitative behaviour of acids and bases in solution can be understood only if their pka values are known. in particular, the ph of a solution can be predicted when the analytical concentration and pka values of all acids and bases are known; conversely, it is possible to calculate the...
Dissociation constants for the oxo (pKaoxo) and hydrated (pKahyd) acids of each compound were estimated from the change in the degree of hydration with changes in pH and directly from the changes in chemical shifts of various hydrogen and carbons nuclei with pH. α-Keto acids showed greater ...
Chapter 13/ Lesson 7 41K Explore the concepts of pKa and pH values and how they relate to acids and bases. Learn the trends in pKa value for functional groups, acids, and bases with examples. Explore our homework questions and answers library ...