Reference

Exogenous factors affecting yield and intrachromosomal distribution of maleic hydrazide-induced chromatid aberrations in Vicia faba

Exogenous factors affecting yield and intrachromosomal distribution of maleic hydrazide-induced chromatid aberrations in Vicia faba. Heindorff, K.; Rieger, R. (Zentralinst. Genet. Kulturpflanzenforsch., Dtsch. Akad. Wiss., Gatersleben DDR-4325, Fed. Rep. Ger.). Biol. Zentralbl., 103(1), 9-23 (English) 1984. CODEN: BIZNAT.In this article, certain chemicals are used. Some of their cas registry numbers are 60-35-5 and 58-08-2 ISSN: 0006-3304. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Section cross-reference(s): 11 The intrachromosomal distribution of chromatid aberrations was nonrandom following the treatment of primary roots of V. faba (karyotype variant) with maleic hydrazide (MH) [123-33-1]. The MH concn. (4-16 ′ 10-4M), the duration of the treatment (0.5-2 h), pH (4-7.4), and the temp. (24 and 37°) affected chromatid aberrations, expressed as aberrations/cell, and percentage of aberrant metaphases. For example, the increase of MH concn., prolongation of the treatment, and higher temp. during treatment enhanced the aberration frequencies. Increased pH values of the MH treatment decreased the aberration frequency. Caffeine [58-08-2] and Hoechst 33258 [23491-45-4], used for post- and pretreatment, resp., enhanced the aberration yield. In contrast, L-cysteine [52-90-4], hydroquinone [123-31-9], catalase [9001-05-2], formamide [75-12-7], and acetamide [60-35-5] significantly decreased MH-induced aberration frequency. A general correlation between the degree of aberration clustering and aberration frequency was obsd. The percentage of chromatid aberrations of the most sensitive chromosome region decreased with increasing aberration frequency, independent of the exogenous factor, while for the other heterochromatin-contg. segments the reverse was true. .

Stabilization of rocks by injection of a stabilizing mixture

Stabilization of rocks by injection of a stabilizing mixture. Mazij, Wladyslaw; Borys, Ryszard; Kosmider, Jan; Lukasinski, Stanislaw; Chamska, Bogdana; Bielanski, Andrzej (Politechnika Wroclawska, Pol.). Pol. PL 121399 B2 30 Sep 1983, 2 pp. (Polish). (Poland). CODEN: POXXA7. CLASS: IC: E02D003-14; C09K007-02; E21B033-13. APPLICATION: PL 80-222174 20 Feb 1980. 1344-09-8 and 141-78-6 which are cas registry numbers are also used here. DOCUMENT TYPE: Patent CA Section: 58 (Cement, Concrete, and Related Building Materials) A rock strengthening water glass compn. of low viscosity and setting time ~30 min was obtained by adding fast acting esters and slow acting amides as gelling agents. Thus, a rock-stabilizing soln. for injection contained water glass 100, EtOAc [141-78-6] 4.5, HCONH2 [75-12-7] 10, and water 50 kg. The viscosity of this soln., almost to the moment of gelling, was 2 ′ 103 Pa.s. .