SUBJECTS acidic

For the preparation of standard cobalt solutions, use analytical grade cobalt(II) chloride or spectroscopically pure cobalt dissolved in hydrochloric acid subject solutions containing 0, 5, 10, 25, 50, 100, 150, and 200 jug of Co to the whole procedure. 

In this connection, it must also be borne in mind that the deoxyribonucleic acids subjected to analysis have probably not been homogeneous. Deoxyribonucleic acids have been fractionated by making use of their different solubilities in normal saline,186 by extracting thymus nucleo-his-tone with sodium chloride solutions of increasing concentration,187 by ion-exchange,187 and also by adsorption of the polynucleotide onto histone immobilized on a kieselguhr support.123 It is possible, however, that these are artefacts, since it has been shown that deoxyribonucleic acid fractions extracted from calf-thymus nucleohistone may or may not vary in composition according to the previous treatment of the material.188... 

Recoveries of Galacturonic Acid Subjected to Treatment with 2 M Trifluoroacetic Acid"... 

Labeling experiments with l-deoxy-l-(dibenzylamino)-D-[l- C]-aruI>-mo-2-hexulosuronic acid [l- C] 112 indicated that the C label corresponded to the 5-methyl group of 111 (see Ref. 234). This is also consistent with a l-deoxy-2,3-dicarbonyl intermediate (115), and indicates that 111 is a decarboxylation product (see Scheme 22). The precise step entailing decarboxylation has not yet been determined. The carboxyl group could be carried through to ring closure (furanone formation). Such a step would provide a 2-carboxylate which is a /3-keto acid subject to ready decarboxylation. The labeling information and the initial steps of the mechanism in Scheme 22 are also consistent with the formation of 111 from D-[l- C]ribose and a secondary amine. ... 

The most dramatic observation in Figure 4.4 is the reduction in the energy of the cr orbitals, the LUMO, in the series. As a consequence, the oxy and halo compounds are strong Lewis acids (subject to nucleophilic attack) and strong oxidizing agents (can readily accept electrons). 

Peinado, R. A., Mauricio, J. C., and Moreno, J. J. (2006a). Aromatic series in Sherry wines with gluconic acid subjected to different biological aging conditions by Saccharomyces cerevisiae var. capensis. Food Chem. 94, 232-239. 

A solution of hydrochloric acid, subjected to atmospheric pressure, begins to boil at a temperature which rises gradually by distillation to 110 C. it then distils in constant proportion of water and hydrochloric acid this mixture had been regarded by Bineau as a definite chemical compound represented by the formula HCl-811,0. Roscoe and Dittmar did not consider the matter in this way, and they showed its inaccuracy by causing hydrochloric acid solution to boil under various pressures. The boiling attains in every case a permanent regime but instead of reproducing constantly the supposed hydrate HCl-SHjO,... 

Elimination and excretion of 2-butoxyethanol after inhalation exposure appears to be similar in both humans and animals. Human studies suggest that excretion of 2-butoxyacetic acid is variable. Volunteers were exposed to 98 or 195 ppm 2-butoxyethanol for 8 hours (Carpenter et al. 1956). Urinalyses for free 2-butoxyacetic acid were conducted on urine samples collected during the 24 hours following the end of the exposure period. Results showed that at the 195-ppm exposure level, one male excreted 175 mg and one female excreted 300 mg of 2-butoxyacetic acid in the 24-hour period. Another male exposed to 195 ppm excreted only trace amounts of 2-butoxyacetic acid. Subjects exposed to 98 ppm (n=4) showed the following values for excreted 2-butoxyacetic acid 100 mg (one female),... 

Table 1. Results of uric acid turnover studies by isotope dilution methods. I studies during purine-free, iso-energetic liquid formula diet II studies during purine supplementation. Subject 1-3 were studied using 15 N-uric acid. Subject 4 and 5 were studied after injection of 13 C-uric acid.

Continuous process. An aq. soln. of maleic acid subjected to countercurrent contact with xylene vapors on a column filled with Raschig rings at a bottom temp, of 136-142° and a top temp, of 92° maleic anhydride. Y 92-9 J. Kubica et al., Przemysl Ghem. 41, 458 (1962). 

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