Reference

Role of plant transpiration in the formation of rainwater composition

Role of plant transpiration in the formation of rainwater composition. Pogrebnyak, Yu. F.; Suslenkova, R. M.; Tolochko, V. V. (Chitinsk. Inst. Prir. Resur., Chita, USSR). Dokl. Akad. Nauk SSSR, 272(4), 968-70 [Geochem.] (Russian) 1983. CODEN: DANKAS. ISSN: 0002-3264. DOCUMENT TYPE: Journal CA Section: 53 (Mineralogical and Geological Chemistry) Rain water (RN) samples collected over the Eravinskoe ore lode (western Transbaikalia), in the low-mountain taiga landscape, have a high concn. of ore-forming elements, esp. Cu and Zn; the concn. of these elements in the RW is higher than the threshold values in surface waters. The total contents are detd. of Cu and Zn in the transpiration waters (8.4, 11.6) from plants (birch, larch, pine) and in the RW (18.9, 30.7 mg/L). Thus, transpiration waters from plants play major role in detn. the compn. of RW over mineralized zones; this phenomenon can be used in ore prospecting.Except for chemicals metioned above, 7440-66-6 and 7440-50-8 are also used. .

Lysozyme-accessible fibers from chitin and its derivatives

Lysozyme-accessible fibers from chitin and its derivatives. Tokura, Seiichi; Nishi, Norio; Nishimura, Shinichiro; Somorin, Oyin (Fac. Sci., Hokkaido Univ., Sapporo 060, Japan). Sen'i Gakkaishi, 39(12), T507-T511 (English) 1983. CODEN: SENGA5. ISSN: 0037-9875. DOCUMENT TYPE: Journal CA Section: 40 (Textiles) Chitin [1398-61-4] and chem. 1398-61-4 and 70645-06-6 which are cas registry numbers are also used here. modified chitins were spun into fibers and their tensile properties were investigated together with the accessibility toward lysozyme (I) [9001-63-2]. The fibers of partially deacetylated chitin showed the best tensile strength properties, esp. in the wet state. On the other hand, the accessibility of the fibers toward I was enhanced by the introduction of hydrophilic alkyl groups such as carboxymethyl or dihydroxypropyl group into the chitin mol. although the tensile strength in the wet state decreased. The accessibility of the chitin derivs. toward I was rather enhanced even by the alkylation with bulky alkyl groups, at the hydroxyl group at C6 of N-acetyl-glucosamine residue. The microscopic observations suggested that the enhancement of the accessibility was mainly due to the increase of the hydrophilicity of the fiber surface. .