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Direct producers

The WLN was applied to indexing the Chemical Structure Index (CSI) at the Institute for Scientific Information (ISI) [13] and the Ituiex Chemicus Registry System (ICRS) as well as the Crossbow System of Imperial Chemical Industries (ICl). With the introduction of connection tables in the Chemical Abstracts Service (CAS) in 1965 and the advent of molecular editors in the 1970s, which directly produced connection tables, the WLN lost its importance. [Pg.25]

Process. The QSL process (14) is a continuous single-step process having great flexibiUty in regard to the composition of the raw materials. In this process the highly exothermic complete oxidation, ie, the roasting reaction, can be avoided to some extent in favor of a weakly exothermic partial oxidation directly producing metallic lead. However, the yield of lead as metal is incomplete due to partial oxidation of lead to lead oxide. [Pg.38]

Lithium acetyhde also can be prepared directly in hquid ammonia from lithium metal or lithium amide and acetylene (134). In this form, the compound has been used in the preparation of -carotene and vitamin A (135), ethchlorvynol (136), and (7j--3-hexen-l-ol (leaf alcohol) (137). More recent synthetic processes involve preparing the lithium acetyhde in situ. Thus lithium diisopropylamide, prepared from //-butyUithium and the amine in THF at 0°C, is added to an acetylene-saturated solution of a ketosteroid to directly produce an ethynylated steroid (138). [Pg.229]

We achieved, that by contact of polyurethane foam with water solution of molybdophosphate, contain by pH 1-2,5 mixture of saturated (5 NMR P=-3.20 p.p.m. apply to 85 % H PO ) and unsaturated monovacant (x=0-t-4) (5 NMR P = -0,96 p.p.m.) heteropolycomplexes Keggin staicture, equilibrium discharge in the direction produced of saturated heteropolycomplex of Dowson stmcture and on the surface of polyurethan foam formed 18-molybdo-2-phosphate acid ( P = -2,40 p.p.m. in ether extract). The formed surfaces heteropolycomplex is stable for action 1 M solution of strong acids and basics and have ion exchanged properties in static and dynamic conditions to relation to macro and micro amount of M(I) ... [Pg.260]

A further stepwise synthesis of this type, in which 2-bromomethyl-3-nitropyridine (105) was the starting material, is the only method so far reported which directly produces pyrido[3,2-d]pyrimidines without nuclear oxygen substituents (106). ... [Pg.173]

Reverse osmosis, (a) When the external pressure (P) is less than the osmotic pressure (71-) (P < it), normal osmosis occurs, (b) When the external pressure exceeds the osmotic pressure, water flows in the opposite direction, producing reverse osmosis. Reverse osmosis can be used to obtain fresh water from seawater. [Pg.272]

There is only one exception to this scheme, a process in which highly coned nitric acid is directly produced by absorption of the nitrogen oxides in perchloric acid (Ref 36)... [Pg.273]

In many Instances administered drugs alter a metabolic pathway and directly produce changes In biochemical values. [Pg.275]

HIV is neuroinvasive, neurovirulent, but is not especially neurotrophic (Manji and Miller 2004). It can potentially affect all areas of the neuroaxis, either directly, producing distinct neurological syndromes, or indirectly, by causing immunodeficiency with resultant susceptibility to opportunistic infections. General principles... [Pg.51]

Logistics of e-waste collection commonly involve three channels. Municipal collection sites usually accept any amount of waste from citizens, without cost. In-store retailer take-back schemes may be free or depend on repeat purchases. Direct producer take-back is generally for business customers and may require a replacement purchase. [Pg.269]

In these studies the quoted production routes were not unique. For example, with He/CH3Br/CH3OH mixtures, a significant amount of (CH3)2OH+ was directly produced by the reaction ... [Pg.109]

European Commission, Common Implementation Strategy fort the Water Framework Directive (2000/60/EC), Guidance Document No.7 Monitoring under the Water Frame Work Directive, Produced by Working Group 2.7 - Monitoring, 2007... [Pg.424]

Photo/Thermal Reactions. The fifth basic class of photopolymer chemistry that can be used in commercial applications is based more on physical changes in a polymer-based matrix than on chemical reactions. A recent application of this technology is the laser ablation (77) of an organic coating on a flat support to directly produce a printing plate. The availability of newer high energy lasers will allow more applications to be based on the photo/thermal mechanism. [Pg.5]

Among the local mediators directly produced by endothelium, NO and PGI emerge as two principal regulators of vascular tone and platelet aggregation. Both are sensitive to estrogenic stimuli, and, as mentioned in a previous section, their role is crucial in atherogenesis. How their production is modulated by SERMs is, consequently, an important test of vascular protection. [Pg.227]

A We know that a decrease in volume or an increase in pressure of an equilibrium mixture of gases causes a net reaction in the direction producing the smaller number of moles of gas. [Pg.342]

The first STS structure solved was that of a pinosylvin-forming STS from Pinus sylvestris. Pine trees can by-pass the C4H reaction and directly produce the CoA thioester of cinnamate that allows this STS to utilize a non-substituted cinnamoyl-CoA starter in vz vo.11 However, when presented in vitro with p-coumaroyl-CoA, the enzyme proves to be comparable in activity to STS enzymes from organisms that utilize the para-substituted cinnamoyl starter. [Pg.215]

Brevioxime 25 is a natural product isolated from Penicillum brevicompactum and displays in vitro inhibition of juvenile hormone biosynthesis. Two different synthetic approaches have been described for this molecule. Different authors carried out the cyclization of the unsaturated ketoamide 409 in the presence of nitrosyl chloride that directly produced cyclization and led to the oxime <2001SL257, 2001T8699>. Starting from the same... [Pg.540]


See other pages where Direct producers is mentioned: [Pg.1536]    [Pg.150]    [Pg.1847]    [Pg.22]    [Pg.51]    [Pg.159]    [Pg.169]    [Pg.275]    [Pg.175]    [Pg.346]    [Pg.124]    [Pg.182]    [Pg.509]    [Pg.254]    [Pg.495]    [Pg.311]    [Pg.312]    [Pg.445]    [Pg.153]    [Pg.220]    [Pg.201]    [Pg.311]    [Pg.19]    [Pg.76]    [Pg.117]    [Pg.70]    [Pg.207]    [Pg.214]    [Pg.231]    [Pg.126]    [Pg.128]    [Pg.395]    [Pg.535]    [Pg.362]   
See also in sourсe #XX -- [ Pg.3 ]




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