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A cubic silsesquioxane. A silsesquioxane is an organosilicon compound with the chemical formula [RSiO 3/2] n (R = H, alkyl, aryl, alkenyl or alkoxyl.). [1] Silsesquioxanes are colorless solids that adopt cage-like or polymeric structures with Si-O-Si linkages and tetrahedral Si vertices.
alternative meanings of ambiguous morpheme, e.g. 2/3 for a morpheme that may be either 2nd or 3rd person, or DAT/GEN for a suffix used for both dative and genitive. [ 27 ] [ 6 ] [optional in place of period] a morpheme indicated by or affected by mutation, as in Väter-n (father\ PL-DAT.PL ) "to (our) fathers" (singular form Vater )
This is the list of Schedule I controlled substances in the United States as defined by the Controlled Substances Act. [1] The following findings are required for substances to be placed in this schedule: [2]
644.2 Early onset of delivery; 645 Prolonged pregnancy. 645.1 Post term pregnancy; 645.2 Prolonged pregnancy; 646 Other complications of pregnancy, not elsewhere classified 646.0 Papyraceous fetus; 646.1 Edema or excessive weight gain in pregnancy without mention of hypertension; 646.2 Unspecified renal disease in pregnancy without mention of ...
Post open source, also called "post open-source software (POSS)", was a 2012/2013 noticed movement [1] [2] among software developers, in particular open-source software developers.
2-Phosphoglycolate (chemical formula C 2 H 2 O 6 P 3-; also known as phosphoglycolate, 2-PG, or PG) is a natural metabolic product of the oxygenase reaction mediated by the enzyme ribulose 1,5-bisphosphate carboxylase (RuBisCo). Photorespiration serves as a salvage pathway that converts 2-PG into non-toxic metabolites. Contrary to the Calvin ...
The synthesis requires only seven steps, a huge improvement on the original 17-steps synthesis of Corey and Cheng, [13] and uses 2,5-dimethoxytetrahydrofuran as a starting reagent, with S-proline as an asymmetric catalyst. In 2019, a more effective and stereoselective synthesis was described. [14]
USS Petrel (PG-2), a gunboat, commissioned in 1889 and decommissioned in 1919 USS Petrel (ASR-14) , a Chanticleer -class submarine rescue ship; commissioned 24 September 1946; decommissioned on 30 September 1991