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Polycyclic aromatic hydrocarbons (PAHs) are an important class of HOCs, which are ubiquitously distributed in aquatic and terrestrial ecosystems and preferentially associated with solid particles due to their low solubility. PAHs are generally persistent HOCs, however, they may be degraded by microorgani...
The procedure was analogous to Example 3.5, except the components were placed in a brazing oven heated to about 600° C. The parts were removed brazed from the oven. The foregoing description and examples have been set forth merely to illustrate the invention and are not intended to be limiti...
Soluble lignone derivatives obtained by the treatment of ligno-cellulosic materials with sulphurous acid, as described, for example, in Specification 202,016, [Class 2 (iii), Dyes &c.], are converted into insoluble derivatives by oxidation. Chromic acid or sodium bichromate may be used as ...
The temperature at which the reaction is carried out in the process of the invention may range from ambient temperature (approximately 20° C.) up to the boiling point of the mixture, for example up to 100° C. The process may be carried out at ambient pressure (approximately 1 bar absolu...
Soluble lignone derivatives obtained by the treatment of ligno-cellulosic materials with sulphurous acid, as described, for example, in Specification 202,016, [Class 2 (iii), Dyes &c.], are converted into insoluble derivatives by oxidation. Chromic acid or sodium bichromate may be used as ...
EXAMPLE 1 7-[2-[[(Cyanoimino) (methylthio)methyl]thio]acetamido]-3-(hydroxymethyl)-8-oxo-5-thia-1-azabic yclo[4.2.0]oct-2-ene-2-carboxylic acid,3-acetate,potassium salt a. 17.8 g. (100 mM) of cyanodithiocarbamic acid, S,S-dipotassium salt [Ann. 331, 283 (1904)] are dissolved...
Also in this class, such as in other classes of sympathicomimetics, it is possible to notice how even very small structural differences may result in remarkable effects on the degree or on the kind of activity, depending on various interdependent factors such as the kind and position of substi...
Specification 16272/10, [Class 2 (iii), Dyes &c.], is referred to.
Within the class defined by formula I, because of their properties, certain subgroups are preferred.Compounds in the group represented by formula I which are derived from or include the structure of the amino acids glycine, alanine, leucine, threonine, phenylalanine, lysine, arginine, glutamine, ...