effect of heliotropism on the bidirectional reflectance of irrigated cotton

the dynamic movement of cotton leaves in the presence of sunlight has been described using gyroscope coordinates. these coordinates were used to calculate the position of leaf normals with respect to the sun on an individual basis. a sensitivity analysis established that the angle between a leaf normal and the sun was most affected by cha..

differentiation of catalyst types in the formaldehyde-cotton cellulose reaction

in the reported study, the differences in effectiveness between a bronsted acid catalyst (hydroxymethanesulfonic acid) and two commonly employed lewis acid catalysts (zn(no//3)//2 and mgcl//2) on the pad-cure reaction of formaldehyde with cotton cellulose were determined. the effects of each catalyst were followed by measured textile prop..

crop yields, watertable depth, and soil salinity in the nile delta, egypt

the drainage research institute in cairo, egypt, began in 1979 the crash program to acquire a rough quantitative insight into the effect of subsurface drainage on agricultural production in the nile delta. since high watertables and soil salinities are the two main factors affected by drainage, they formed the basis of the study another i..

cottonseed flavonoids as lipid antioxidants

methanolic extracts of cottonseeds were found to possess antioxidant activity. separation of antioxidant components was achieved by paper, thin layer (tlc) and gas liquid chromatography (glc) and spectral analysis. chromatographic technique indicated that the flavonoids quercetin and rutin were the major flavonoids present. rutin was foun..

distribution of ammonia-related aflatoxin reaction products in cottonseed meal

the fate of aflatoxin during ammoniation of contaminated cottonseed meal was studied under conditions approximating those approved for commercial ammoniation of nonaflatoxin-contaminated meal. 11 refs

non-conventionl energy for lift irrigation

india is essentially an agricultural country with 70 per cent of its population living in rural villages. on the average, these villages need 150 kwh of energy per day for energizing irrigation pumps, for lighting, for cooking, etc. drip irrigation of corn, wheat, cotton, millets requires about 25 m**3 of water per hectare-day whereas foo..

soil moisture investigations of groundwater recharge through black cotton soils in madhya pradesh, india

soil physical studies were carried out in the black cotton soil areas of the betwa basin, central india, to assess their role in partitioning monsoon rainfall into runoff and groundwater recharge the regional and annual variations of soil moisture were studied first, followed by studies of the soil water flow mechanisms at representative ..

structure of concentrated winsor microemulsions by sans

we have performed contrast variation sans experiments in winsor microemulsions. we discuss the results in terms of film curvature, shown to be related to the film-water partial structure factor experimentally measured. we thus evidence that the winsor microemulsion studied are random and bicontinuous as predicted by recent theories. (auth..

evapotranspiration estimates derived from subsoil salinity data

a method is described for estimating past evapotranspiration (et) rates from irrigated fields. it is based on the assumption that salt concentrations below the crop root zone are a function of the flux of naturally occurring salts applied by irrigation at the soil surface and the rate of soil water depletion due to et. thus, if irrigation..

recrystallization of cellulose

hydrolysates of fibers swollen in various intracrystalline swelling agents were ball-milled for separate periods. these samples containing different proportions of cellulose i(c i) cellulose ii (c ii) and amorphous (am) phases were subjected to a mild hydrolysis, and their recrystallization behavior was studied by x-ray diffraction method..