brief review of en-masse conveyors in china

the apparent features of en-masse conveyors are: simple construction, occupying less space and adaptability to different conditions. when handling materials which are toxic, explosive at fairly high temperatures, or liable to dispersal, this kind of conveyor will greatly improve the working and sanitary conditions, minimizing the pollutio..

use of saline water from a shallow water table by cotton

a water management study was conducted on the west side of the san joaquin valley to investigate the interaction of irrigation water management and drain flows in an area with a perched water table cotton was grown for three years. data were collected which described the water balance, crop yield, water table response, and drain flow. the..

drip irrigation of cotton with saline drainage water

cotton was trickle irrigated with 8. 5 ds/m saline water on saline soil in the presence of a saline water table. the yields were equal to a well-watered check plot which was irrigated with non-saline water. significant quantities of water were extracted from a shallow (1. 5 m) saline water table. a 2. 3 m lateral spacing did not result in..

effects of feed position and grid spacing on stick machine performance

studies were conducted to evaluate the effects of cotton feed position and grid spacing on the trash removal and cotton wastage characteristics of a two-saw stick machine. cotton feed position was found to have a large influence on cotton losses, but little effect on trash removal. a feed position after top center of the cleaning saws pro..

comparative toxicity, cholinergic effects, and tissue levels of s,s, s,-tri-n-butyl phosphorotrithioate (def) to channel catfish (ictalurus punctatus) and blue crabs (callinectes sapidus)

the acute neurotoxic effects of s,s,s,-tri-n-butyl phosphorotrithioate (def), widely used as a cotton defoliant in the us, on juvenile channel catfish and adult blue crabs were examined using short-term exposures in aerated, static aquaria. the effects on acetylcholinesterase (ache) activity in catfish brain and skeletal muscle and in cra..

effect of agrometeorological conditions on maturation and yield of common vetch seed

results of studies of agrometeorological conditions of the vegetation period of common vetch are outlined for the promising strains lugovchanka and lugovskaya-85 and the regionalized strain lugovskaya-60. the effect of these conditions on the length of the vegetation period and yield of common vetch seed is demonstrated (author abstract) ..

salinity and drought: a comparison of their effects on osmotic adjustment, assimilation, transpiration and growth

water deficit (water stress - ws) and excess salt (salt stress - ss) evoke similar plant responses, yet clear differences have been observed. the effect of the two forms of stress applied consecutively to cotton (gossypium hirsutum) and pepper (capsicum annuum) was studied in a growth chamber in 2. 5-liter containers packed with a slit lo..

natural fibre - a return to first principles

although natural fibres are clearly the original 'geotextile', for some years they have been overshadowed by the newer synthetic materials for geotechnical work. today the pendulum swing of customer preference in terms of personal fabrics has moved back to natural materials such as cottons, wools and linens, so in geotextiles the client i..

structure of fibrous cellulose acetate: x-ray diffraction, positron annihilation and electron microscopy investigations

x-ray diffraction, positron annihilation, electron microscopy and bulk density measurements are reported as a function of the degree of acetylation for a linters cotton. heterogeneous reaction proceeds with a retention of ordered structure in the fibers substitution does increase the extent of disorder but is not sufficiently extensive to..

influence of tin chloride on the thermal decomposition of cottongrass peat

the influence of tine chloride on the thermal decomposition of cottongrass peat has been studied. the presence of tin chloride leads to a rise in the yield of carbonaceous residue and to an increase in its carbon contents and degree of aromatization (c/h atomic ratio). the increase in the yield of carbonaceous residue and in the degree of..