Apparatus ( 104 ) for dispensing material produced by a chemical reaction between a first chemical reagent and a second chemical reagent. The apparatus comprises injection means ( 306 ) configured to produce a jet of the first chemical reagent and a jet of the second chemical reagent such that...
aany of a large group of chemical substances, as penicillin or streptomycin, produced by various microorganisms and fungi, having the capacity in dilute solutions to inhibit the growth of or to destroy bacteria and other microorganisms, used chiefly in the treatment of infectious diseases 其中任一...
Alternatively, the raw materials may be allowed to drizzle down a shaft packed with heat-resistant porous bodies. Relative movement between the bodies of large superficial area and the raw materials may be produced in any other way, for example by means of perforated discs which are caused to ...
The present method can be prepared by combining a chemical reaction with the microbial decomposition of halogenated organic compounds while. 营养源含有有机态碳及为其20-50%重量%的氧化态氮,可以防止分解同时副产生的恶臭气体的产生及土壤变色等。 Nutrient sources containing organic carbon and 20-50% wt....
For execution of the inventive process, suitable are chemical compounds that can be converted in a chemical reaction in such a way that a new material is produced which has a larger surface area than that of the starting material. This applies to reactions in which hydroxides are produced by ...
A method of uniformly distributing substances in a carrier material characterized primarily by mixing a compound, which forms the carrier material by means of a chemical reaction, with the substance to be intermixed with the carrier material, and subsequently treating the mixture with a compound which...
Illumination only produced a sun-struck flavour with cis-isohumulone, trans-isohumulone and racem... M Verzele,HE Jansen,A Ferdinandus - 《Journal of the Institute of Brewing》 被引量: 35发表: 1970年 Composition of bitter substances of hops and characteristics of beer bitterness. Pure hops-...
Multiple fluorescence labeling and two dimensional FTIR-13C NMR heterospectral correlation spectroscopy to characterize extracellular polymeric substances in biofilms produced during composting. Tang, Y.C. Xu, Q.R. Shen, Multiple fluorescence labeling and two dimensional FTIR-13C NMR heterospectral ...
Hardenable one-component substances composed of hardenable components and an activator wherein one of the components is contained in a reaction hindering protective casing to inhibit hardening until use are disclosed wherein, as an additional component, hollow microspheres are included. The microspheres ...
table, explain why molten iron is collected from the [2]bottom of the blast furnace.(b) Write a chemical equation for the reaction between an acidic and basic oxide [1]which occurs in the blast furmace.(c) Name a neutral oxide from the list of substances found in the blast furnace.*...