Absorbance mixture

It has been reported by Will that for nitrocelluloses with nitrogen content from 9.0 to 13.3%, dried to a constant weight at the temperature of 40°C, the percentage sum of the nitrogen content and of the absorbed mixture was constant equal, on average, to 14.6 ... 

In 2003, Zeliger reported that in all cases of these unusual effects of mixtures cited in the literature, the mixtures contained at least one lipophilic and one hydrophilic chemical. A lipophilic chemical is one that exhibits preferential solubility in relatively less polar species. A hydrophilic chemical is one that exhibits preferential solubility in relatively more polar species. Lipophiles promote the permeation of hydrophiles through mucous membranes resulting in the absorption of greater quantities of hydrophilic species than would be absorbed if the lipophile were not present. Once absorbed, the mixtures of chemicals may affect the body in ways not anticipated from the actions of single chemicals alone. It was found that the effects of the absorbed mixtures may be acute or chronic. ... 

The effects of the absorbed mixtures may be acute, chronic, or carcinogenic. In the case of carcinogenesis, the individual chemicals are often not known to be cancer causing (Chapters 32 and 34). 

For the over 250 hazardous chemicals that we have spilled and tested with spill mix, it has been found that liquids are rapidly absorbed and fuming is quickly eliminated. Because the spill mix is relatively inexpensive, containers of it can be kept in laboratories or other areas where hazardous chemicals may be spilled. This allows for very rapid covering of the spill with spill mix and the control of many of the risks associated with the spill. The spill mix we have developed is versatile and provides a practical way of reducing the danger of spills of hazardous chemicals. When the identity of the spilled chemical is known, it is often possible to convert the absorbed mixture to environmentally acceptable products using reactions that have been tested in the laboratory. 

The amino acids absorbed by the animal are required for the synthesis of body proteins. The efficiency with which this synthesis is effected depends partly on how closely the amino acid proportions of the absorbed mixture resemble those of the body proteins and partly on the extent to which the proportions can be modified. The biological value of a food protein therefore depends upon the number and kinds of amino acids present in the molecule the closer the amino acid composition of the food protein approaches that of the body protein, the higher will be its biological value. Animals have little ability to store amino acids in the free state, and if an amino acid is not required immediately for protein synthesis then it is readily broken down and either transformed into a non-essential amino acid or used as an energy source. Since essential amino acids cannot be effectively synthesised in the animal body, an imbalance of these in the diet leads to wastage. Food proteins with either a deficiency or an excess of any particular amino acid will tend to have low biological values. 

Hales never doubted that the whole of the air could be absorbed, although he never observed this I made some attempts both by fire, and also by fermenting and absorbing mixtures, to try if I could deprive all the particles of any quantity of elastick air of their elasticity, but I could not effect it There is therefore no direct proof from any of these Experiments, that all the elastick Air may be absorbed, tho it is very probable it may. In this he was far behind Mayow, whom he had read. 

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