informative value of additional ecg leads in the diagnosis of pulmonary heart under dust bronchitis

the state of bioelectric myocardium activity in 208 patients with chronic bronchitis exposed to cotton and quartz-containing dust was analyzed by means of 12 generally accepted ecg leads, additional right, high, low, posterior chest leads and leads according to nehb 130 ecg parameters were studied. proceeding from the methods of modern ma..

cotton growth and production under drip-irrigation restricted soil wetting

the effects of plant population, row and drip lateral densities and the amount of water per application, on soil water distribution and on cotton growth and productivity under these conditions were determined during 3 years of field trials. cotton was grown in loess-brown loam soil in the northern negev of israel. maximal lint production ..

chirality of polyvinyl compounds. 6. unusual influences of the comonomer structures on the chiroptical properties of optically active vinyl copolymers with chirality arising from configurational relationships in the main chain

in contrast to appreciable negative optical rotations shown by most of the vinyl copolymers of 3,4-o-cyclohexylidene-d-mannitol 1,2: 5,6-bis-o- $left bracket$ (4-vinylphenyl)boronate $right bracket$ after removal of the d-mannitol template, copolymerizations of this monomer with styrene derivatives bearing functional groups in conjugation..

westbound embankment preload on rainier avenue, seattle, washington

fifty-foot-high approach embankments recently completed for a bridge crossing of rainier avenue in downtown seattle required preloading of compressible lacustrine clay sediments as much as 50 ft thick below the abutment areas. this paper presents the results of engineering analyses and recommendations for very complex surcharge fill requi..

use of minirhizotrons to characterize root system orientation

a mathematical model, based on probabilistic assumptions concerning root growth directions, was applied to observations from minirhizotrons, in order to characterize the dominant root system orientation. the model uses the average number of roots that intersect the wall of several tubes buried in the soil, and not the numbers of root on i..

microcrystalline cellulose from bagasse pulp

this paper describes the preparation and some important properties of microcrystalline cellulose prepared from bleached bagasse pulp. the starting bagasse pulp contained cellulose: 76. 3, lignin: 0. 18 and ash: 0. 79. after bleaching, the cellulose content increased to 85. the mcc obtained was analyzed and the results are given. the resul..

moteur diesel alimente en huiles vegetales d'origine tropicale comparaison des performances et des emissions a l'echappement dans une application groupe electrogene. $left bracket$ tropical vegetable oils as diesel engine fuels: comparison of efficienci

the use of cotton seed oil and coconut oil as alternative fuel for diesel engine of an electric power plant has been tested. we have studied performances and exhaust emissions, which are the same for the three fuels tested, with a light increase of efficiency. the pah production, assumed to be precursors of soot and dangerous pollutants i..

vegetative and optical characteristics of four-row crop canopies

the estimation of canopy vegetative parameters from reflected radiation would provide valuable information for assessing crop stress. vegetative and optical properties of cotton, soya beans, grain sorghum and sunflower were measured at three growth stages at different solar zenith angles. scattering and absorption coefficients and asympto..

desert demands special clothing for welders

in desert areas building work mostly has to be carried out under extremely unfavorable conditions. unfortunately, this is characteristic of circumstances there. welders too must cope with the hard, inhospitable conditions. concepts such as laser and electron beam welding and numerical control are often far-off dreams, while only a few of ..

hg//0//. //7cd//0//. //3te/sio//2-photox interface properties studied by photo- and bias-induced charging

we have investigated the effects of light illumination in the wavelength range 1 $mu$ m to 2200 angstrom (with and without dc bias) on the hg//0//. //7cd//0//. //3te (n-type)/sio//2-photox interface at 77 k in the metal-insulator-semiconductor device configuration. illumination of wavelength $lambda$ without bias produced a flatband shift..