recent developments in the screen and pad-transfer decorating of molded plastics parts

silk screen printing, screen process printing, stencil printing, serigraphy or mitorgaphy, all describe a printing process in which ink is forced through a woven mesh in a selective manner so as to produce a controlled image, repeatedly. this paper reviews the most important features of screen decorating technique which is capable of gene..

fungal degradation of cotton materials under outdoor weathering and in soil burial conditions

the degradation of five types of cotton fabric and three types of cotton yarn and threads was studied during outdoor monsoon exposure, tropic room exposure and soil buried conditions. the susceptibility of different cotton materials was due to micronaire characteristics of the fibers and varying fungal activity. highly twisted and merceri..

factors involved in the dynamics of pesticides in soils $em dash$ the effect of temperature and period of contact on leachability and adsorption of pesticides by soils

the effect of soil temperature on leachability and adsorption of pyrolan, $gamma$ -hch, $alpha$ -endosulphan, $beta$ -endosulphan and dieldrin by gezira soil from the sudan, was studied it was found that even when subjected to high temperatures and prolonged leaching, dieldrin and endosulphan isomers did not leach below 17 cm depth, but p..

factors involved in the dynamics of pesticides in soils $em dash$ the effect of pesticide concentration on leachability and adsorption

the effect of concentration on leachability and adsorption of $gamma$ -hch, dieldrin, endosulphan and pyrolan was studied in a sandy clay loam from northern england, under laboratory and greenhouse conditions. concentration did not affect leachability and adsorption of dieldrin and endosulphan, but increased leachability of pyrolan and $g..

pesticide-microbial interaction in the soil

soils collected from the gezira irrigation scheme in sudan were incubated with five pesticides (pyrolan, $alpha$ -and $beta$ -endosulphan, $gamma$ -hch and dieldrin), using three independent methods. endosulphan isomers were degraded by soil micro-organisms to a much greater extent than pyrolan, dieldrin or $gamma$ -hch when applied at lo..

repair of offshore constructions

the paper discusses the development of offshore repair techniques and the philosophy involved in deciding upon a particular method of repair, considering the relative costs and complexity of the various operations involved. emphasis is placed upon underwater welded repairs, although mechanical systems are also considered. the various prob..

adaptive calibration of radio interferometer data

adaptive calibration can be achieved as follows: assumptions on the analytic properties of i lead to a measure of the consistency of the observations, from a given instant, with the total set of data; given an appropriate error model, an overdetermined system of equations in the unknown errors results; correcting the data accordingly, an ..

chlorine: the unseen assailant

the effect of the presence of chlorine ion potable water supplies used for dyeing on shade reproducibility in dyeing of basic, direct and fiber reactive dyes on the appropriate substrates of acrylic and cotton fibers was studied. shade changes in both depth and hue are given for various levels of chlorine. small amounts of chlorine can ca..

multi-fuel boiler fires coal back to life at alabama mill

a tallassee, ala. , cotton mill, with guidance provided by the state energy extension service, has made coal burning feasible. the mill's new boiler burns coal, wood, oil or gas either separately or together, and requires no air pollution control equipment. the cnb tri-fuel boiler, manufactured by combustion service && equipment co has a ..

pesticide regulations in egypt to avoid hazards to the environment and human health

the paper discusses the role of ddt and other chemical pesticides in the protection of plants and animals from disease and infection. using as an example cotton and two of its pests, the cotton leafworm, spodoptera littoralis, (boisd. ) and the pink bollworm, pectinophera gossypiella (saund. ), measures taken to minimize pesticide applica..