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Library Genesis (LibGen) is a shadow library project for file-sharing access to scholarly journal articles, academic and general-interest books, images, comics, audiobooks, and magazines.
In June 2020, Z-Library was visited by around 2.84 million users, of whom 14.76% were from the United States of America. [12] According to the Alexa Traffic Rank service, Z-Library was ranked as the 8,182nd most active website in October 2021. [13]
Under normal pH conditions, an excess of 3 stoichiometric amounts of ketone catalyst are needed due to a high rate of decomposition. At basic pH conditions greater than 10 (pH 10.5) substoichiometric amounts (0.2–0.3) are needed for epoxidations, lowering the decomposition of reagents by disfavoring the Baeyer-Villiger side reaction.
The United States Food and Drug Administration issued multiple advisories on Wednesday for oysters and clams that they say could be contaminated with norovirus, a serious gastrointestinal illness ...
The structure of the molecule of urea is O=C(−NH 2) 2.The urea molecule is planar when in a solid crystal because of sp 2 hybridization of the N orbitals. [8] [9] It is non-planar with C 2 symmetry when in the gas phase [10] or in aqueous solution, [9] with C–N–H and H–N–H bond angles that are intermediate between the trigonal planar angle of 120° and the tetrahedral angle of 109.5°.
"Dean used to help me wrap all the gifts, but obviously, now I'm a single mom, separate households," Spelling says of her ex-husband Dean McDermott, with whom she shares her five kids — Liam, 17 ...