pH is a measure of the hydrogen ion activity, typically in aqueous solution. In pH, the p stands for -log10 and the H stands for hydrogen ion activity: pH = -log10aH+ In dilute solutions, the activity of hydrogen ions can be approximated by their molar concentration, and it is in...
在化学的历史中，H都指代的是氢离子或氢离子浓度，这个没有问题 而p的写法稍有变化，在早期化学中，pH有各种写法，比如p[H](首创于丹麦科学家），也有H作p的下标的写法，在法语和德语中，pH也可翻译为氢离子的势能（potential hydrogen）在现代化学中，小写p指代的是“以10为底数的对数值”，比如...
Briefly, a suspension of P.aeruginosa (20 μL) was inoculated in 10 mL LB sterile tubes containing the filmed glass substrates [38]. The suspension was rotated at 121 rpm and incubated at a constant temperature of 37 °C for 18 h. After that, each 20 μL bacterial ...
In contrast, introduction of the same AE2 RL1 residues into the RL1 of the pH-insensitive chimera AE2(1–920)/AE1(613–929) conferred AE2-like pH sensitivity to pHi but not to pHo. These data show that H+ sensing by the pH-sensitive regulatory domain of AE2 likely involves broad ...
In conclusion, our data indicate, that in terms of tumourgenesis, strong expression of pHH3 and survivin occur more often in type II and high-grade carcinomas as a sign of predominate prolifera- tion and a feasible late event in the development of endometrium cancer. In our experience, ...
The formation reactions are written in terms of a user-specified set of primitive species, e.g. M, H 2 O, H + , e , X and Y, where X and Y could be CO 2 and Cl for example. Some of these primitive species, e.g. M and e , may be virtual species, that is, they do ...
Hydrogel samples were immersed in various pH buffer solutions for at least 24 h. The average value of three measurements was taken for each sample, and the swelling ratio (SRpH) is defined as follows: Swelling ratio: SRpH ¼ ðWs À WdÞ=Wd; where Ws is the weight of swollen ...
The vector π cannot be obtained directly in terms of the parameters of the model. From (1) we get π i = π i − 1 U i − 1 , 1 ≤ i ≤ L (3) where U 0 = − G ′ ( F + U 1 E ) − 1 U i = − G ( F + U i + 1 E ) − 1 f o r 1 ...
I have used PHStat within excel all semester and only these last two weeks have problems arisen. My professor linked a sheet inside one of our quizzes...
Correction terms j - log mγH = δ have been calculated, and it is shown that pH - δ closely approximates pa H* under optimum conditions of measurement. An operational scale of pH* (which is related to pa H* in the same way that pH is related to pa H) is described. Values of...