组氨酸残基中的咪唑环在生理 pH 条件下可发生质子化和去质子化 ... et al. J Med Chem. Synthesis of (5 - valine, 7 - N - methylalanine) - angiotensin II, a hypertensive peptide. [3] Khosla MC, et al. Gen Comp Endocrinol.

Both reduce the risk of vaginal and urinary tract infections (UTIs). Semen has a pH level between 7.1 and 8. Having unprotected sex briefly increases the pH of the vagina. An increased pH is helpful ...

也可使用一些缓冲液，如 pH 值为 7.4 的磷酸盐缓冲液（PBS），PBS 接近生理环境 pH 值，能较好地维持多肽的稳定性，有助于溶解 。若需要更高浓度的溶液，可考虑使用少量的二甲基亚砜（DMSO）助溶，但在后续细胞实验等应用中，要注意 DMSO 对细胞的潜在毒性 ...

Parker-Hannifin Corporation manufactures and sells motion and control technologies and systems for various mobile, industrial, and aerospace markets worldwide. The company operates through two ...

An unstable haemoglobin causing inclusion-body anaemia is described. Its amino-acid substitution is in the haem pocket of the α chain, homologous in position to that in Haemoglobin Hammersmith ...

Wi-Fi 7 is the next-generation Wi-Fi standard that aims to deliver faster speeds and better performance. Here is everything you need to know about it. Joe Supan is a senior writer for CNET ...

iOS 11.3, up to iPadOS 17.6.1 ...

The first two colors will come with a Mocha/Gray interior, while the latter two will have a Burgundy/Black interior. Based on the X70, the X70 Lightning i-DM is a three-row 7-seater SUV measuring in ...

Body Dimensions 158.7 x 75.6 x 8.5 mm (6.25 x 2.98 x 0.33 in) ...