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Hace 4 días · Estrogen ( British English: oestrogen; see spelling differences) is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics. [1] [2] There are three major endogenous estrogens that have estrogenic hormonal activity: estrone (E1), estradiol (E2), and estriol (E3 ...
Hace 2 días · Carbon capture and storage ( CCS) is a process in which a relatively pure stream of carbon dioxide (CO 2) from industrial sources is separated, treated and transported to a long-term storage location. [2] : 2221 For example, the burning of fossil fuels or biomass results in a stream of CO 2 that could be captured and stored by CCS.
Hace 2 días · Parkinson's disease ( PD ), or simply Parkinson's, is a long-term neurodegenerative disease of mainly the central nervous system that affects both the motor system and non-motor systems. The symptoms usually emerge slowly, and as the disease progresses, non-motor symptoms become more common. Usual symptoms are tremor, slowness of movement ...
Hace 1 día · Vitamin B12, also known as cobalamin, is a water-soluble vitamin involved in metabolism. [2] It is one of eight B vitamins. It is required by animals, which use it as a cofactor in DNA synthesis, and in both fatty acid and amino acid metabolism. [3]
Hace 4 días · Definition. Fatigue in a medical context is used to cover experiences of low energy that are not caused by normal life. [2] [3] A 2021 review proposed a definition for fatigue as a starting point for discussion: "A multi-dimensional phenomenon in which the biophysiological, cognitive, motivational and emotional state of the body is affected ...
Hace 2 días · Cholesterol is an extremely important biological molecule that has roles in membrane structure as well as being a precursor for the synthesis of the steroid hormones, the bile acids, and vitamin D. Both dietary cholesterol, and that synthesized de novo, are transported through the circulation in lipoprotein particles.
Hace 1 día · acetyl chloride SOCl 2 acetic acid (i) Li[AlH 4], ether (ii) H 3 O + ethanol Two typical organic reactions of acetic acid Acetic acid undergoes the typical chemical reactions of a carboxylic acid. Upon treatment with a standard base, it converts to metal acetate and water. With strong bases (e.g., organolithium reagents), it can be doubly deprotonated to give LiCH 2 COOLi. Reduction of acetic ...
