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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.
The National Geographic Society – Palomar Observatory Sky Survey (NGS-POSS, or just POSS, also POSS I) was a major astronomical survey, that took almost 2,000 photographic plates of the night sky. It was conducted at Palomar Observatory , California, United States, and completed by the end of 1958.
In plants, 2-phosphoglycolate has a potentially toxic effect as it inhibits a number of metabolic pathways. [3] The activities of important enzymes in the central carbon metabolism of the chloroplast such as triose-phosphate isomerase, phosphofructokinase, or sedoheptulose 1,7-bisphosphate phosphatase show a significant decrease in the presence of 2-PG.
common gender (C.SG or cs common singular, C.PL or cp common plural) [33] [8] C: current evidence [21] C: conceptualizer [36]-C 'compass', in languages where relative position is based on cardinal direction rather than left, right, front and behind (ABLC compass ablative, ALLC compass allative) [43] C-complementizing (prefix on case ...
α-Pyrrolidinopentiophenone (α-PVP), also known as α-pyrrolidinovalerophenone, O-2387, β-keto-prolintane, prolintanone, [2] [3] or desmethylpyrovalerone, is a synthetic stimulant of the cathinone class developed in the 1960s that has been sold as a designer drug and often consumed for recreational reasons.
An assortment of PG cable glands.Similar glands with DIN/ISO metric threads are also available. The Stahlpanzerrohrgewinde (German: [ˈʃtaːlˌpantsɐʁoːɐ̯.ɡəˌvɪndə], "steel conduit thread") standard for screw threads, more often called by the shortened Panzergewinde (German: [ˈpantsɐɡəˌvɪndə]), was a technical standard created in Germany and subsequently used in Switzerland ...
The CS spray used by police forces was in the form of a hand-held aerosol canister containing a 5% solution of CS dissolved in methyl isobutyl ketone and propelled by pressurized nitrogen. [60] The CS spray used by UK police was generally more concentrated than that used by American police forces (5% vs 1%). [61]
The RPG-2 anti tank grenade launcher is a simple 40 millimeter steel tube [10] into which the PG-2 grenade is fitted. The tailboom of the grenade inserts into the launcher. The diameter of the PG-2 warhead is 80mm. The center section of the tube has a thin wooden covering to protect the user from the heat generated by the grenade launch.