Proceedings / Indian Academy of Sciences
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Side pumping technique model for laser pumped by solar energy
Tập 110 Số 3 - Trang 335-349 - 1998
A model of side pumping technique for a system of solar concentrators was performed for laser generation. Measurements for the total solar radiation in the hot desert area near Helwan which is south of Cairo by 30 km, of latitude 30°N and longitude 31°E were carried out. The instruments were installed on the rooftop of the National Research Institute of Astronomy and Geophysics (NRIAG). The measur......
Effect of maleic hydrazide on growth, bolting behaviour and keeping quality of Indian radish (Raphanus sativus L.)
Tập 39 Số 1 - Trang 1-16 - 1954
Typology of sclereids
Tập 77 Số 2 - Trang 41-55 - 1973
A resume on the morphological types of sclereids has been given under various typological heads with example drawn from the published literature to enhance their utility as distinct types in detailed description of sclereids. Depending on the constancy of the body shape the sclereids are classified into two main subdivisions: Monomorphic and Polymorphic. With some reservation, within the scope of ......
Studies on the chemistry of copper(I) with arylazoimidazoles
Tập 110 Số 5 - Trang 445-451 - 1998
N(1)-alkyl-2-(arylazo)imidazoles (RC6H4N=NC3H2N N(1)X; X=Me (a), Et (b); R=7-Me(L1), 7-OMe(L2), 7-Cl(L3), 7-NO2(L4) and 8-Me(L5)) yield perchlorate salts ofbis-chelated complexes with copper(I). The complexes are 1:1 electrolyte and the composition in supported by Jobs method of continuous variation. The N=N stretching is red shifted by 60–70 cm−1 compared to free ligand values suggesting efficien......
Effect of herbicides on the carbohydrate and nitrogen contents of nutgrass (Cyperus rotundus L.)
Tập 82 Số 2 - Trang 57-62 - 1975
The effect of four herbicides on the starch and nitrogen contents of the tubers, dry matter production, carbohydrate, amide, amino, ammonium and nitrate nitrogen contents of the foliage of nutgrass (Cyperus rotundus L.) under pot culture conditions was studied. The starch content of the tubers of nutgrass depleted maximum by the Embutox-plus and Tok E-25 when applied as foliar spray and soil place......
A contribution to the embryology ofOlax wightiana wall
Tập 39 Số 6 - Trang 249-256 - 1954
The floral parts arise in acropetal succession. Unicellular hairs are distributed over the floral parts. Plenty of tannin cells are found. The wall of the anther consists of five layers external to the tapetum. The tapetal cells are uninucleate at first, but later become binucleate, and are of the glandular type. The endothecium and the layer immediately below it are fibrillar. The microspores are......
Enzymic proteolysis
Tập 15 Số 6 - Trang 285-297 - 1942
A study has been made of the rate of liberation of cystine and amino nitrogen from eight proteins during successive digestion by pepsin and trypsin. Assuming the specificity of the Sullivan reaction it can be concluded that no free cystine is present in peptic digests. The same reaction shows that cystine is rapidly set free during the action of trypsin. From the vegetable proteins (edestin, gliad......
Isolation and identification of capsaicin and allied compound in chilli
Tập 77 Số 5 - Trang 196-201 - 1973
The isolation and identification of capsaicin from fruits yielded two substances. The white crystalline compound, which, after U.V. and I.R. examination, exhibited the maximum absorption at 206 mµ and the characteristics of long chain-n-alkyl, adjacent to a carboxyl group, was identified as palmatic acid. The molecular formula was, later on, confirmed to C19H38O2. The second, which was oily in nat......