Download ACI 122R-02: Guide to Thermal Properties of Concrete and by ACI Committee 122 PDF

By ACI Committee 122

His advisor reviews information at the thermal homes of concrete and masonry materials, masonry devices, and platforms of fabrics and items that shape construction elements. This advisor comprises attention of thermal mass of concrete and masonry, passive sun layout, and tactics to restrict condensation inside of assemblages.

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Chem. Ges. 67, 892, (1934); R. Kuhn, K. Reinemund, and F. Weygand, Ber. Deut. Chem. Ges. 67, 1460 (1943). 14 14. RIBOFLAVIN CH2OH CH2OH (CHOH)3 (CHOH)3 CH2 Ν °γ γ^γ^γ 0Η HN. CH2 NH 3 ^ο2 o=ç- * + ογ^γγ^ + O H co 2 VII ( %o2 CH2OH I (CHOH)3 CHO + 0=C /NH2 _l °~°^NH2 Λ > ^ /CH 3 11/Λ Ο^^Ν^ ^ ^ /CH 3 O^^T ^CH< + HOOC ^ ^ "z~ ^CH, IX ^^ VIII FIG. 1. Degradation of riboflavin by Pseudomonas riboflavina. R H 3 C^ ^ ^ / N . Λϊ^ 3 ^ ^ ^ ^ N ^ ^CO I H3CT " ^ ^ N ^ C - N H O . QH » - H3C^ ^ ^ ^ Ν . Λ N I^ |T^ CO II ' H3C^^N^C-COOH + NH 2 CONH 2 X: R = D-Ribityl XI: R = CH3 The oxocarbonic acid (XI) can be decarboxylated by sublimation with formation of the lactam (XII).

Neilson, and H. C. S. Wood, / . Chem. Soc. London p. 476 (1961); for this method of synthesis compare T. J. Bardos, D. B. Olsen, and T. Enkoji, / . Amer. Chem. Soc. 79, 4704 (1957). 122a D. E. O'Brien, L. T. Weinstock, and C. C. Cheng, Chem. and Ind. 48, 2044 (1967). 27 II. CHEMISTRY a. Synthesis of Riboflavin 5'-Phosphate {Flavin Mononucleotide, FMN) The phosphorylation of riboflavin with phosphoryl chloride in pyridine provides a method for small-scale preparation of riboflavin 5'-phosphate. The original method of Kuhn and Rudy 123 yields mainly a cyclic phosphate, riboflavin 4',5'-phosphate, as shown by Forrest and Todd.

Chem. 11, 75, 84, 91 (1946); G. P. Ellis and J. Honeyman, Nature (London) 167, 239 (1951); G. P. Ellis and J. Honeyman, / . Chem. Soc. p. 1490, 2053 (1952)]. S. Patent Nos. 2,384,102 and 2,384,105 (Sept. 4, 1945) [Chem. Abstr. 40, 600, 2854 (1946)]. R. Kuhn and R. Ströbele, Ber. Deut. Chem. Ges. 70, 773 (1937). 21 II. CHEMISTRY Among other flavins 6-ethyl-93 and 6,7-diethyl-9-(D-r-ribityl)isoalloxazine 94 have been prepared by this method. D-Ribose was found not to combine with 2-nitro-4-chloro-5-methylaniline95 and 2-nitro-4-methyl-5-chloraniline.

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