gloved operator performance study. final rept

this study is to determine whether greater minimum spacing is required between push buttons for gloved operation than for bare-handed operation. seventy-two undergraduate students served as subjects in groups of 12, one group for each of the six hand-wear conditions. the six hand-wear conditions consisted of one bare-handed group and five..

stream: an exposure assessment methodology for agricultural pesticide runoff. reprint: stream: an exposure assessment methodology for agricultural pesticide runoff

exposure assessments for pesticides used in agriculture require the estimation of both pesticide runoff from fields and resulting concentrations in streams in order to predict the potential aquatic and/or health risk posed by pesticide usage. the stream procedures provide a methodology for estimating the mean, maximum, frequency and durat..

investigation of accessibility changes in 'crystalline' cellulose

exhaustive attempts have been made to detect changes in the fine structure of cotton cellulose brought about by the individual and combined action of the c sub 1 and c sub x components of the cellulase complexes from trichoderma viride, t. koningii, and pestalotiopsis westerdijkii. none of the techniques used to date, which include measur..

dyebath application of direct, acid, and base dyestuffs and combinations thereof to cotton textiles

dyebath application of acid, base, direct plus acid, acid plus base, and cuprophenyl dyestuffs were made on cotton textiles prepared by graft copolymerizing with glycidyl methacrylate to introduce epoxy groups followed by chemical modification with amines, amides, or carboxylic acids. the ranges of intensities, hues, tints, and shades of ..

smoldering combustion of cotton and rayon. / reprint: smoldering combustion of cotton and rayon

smolder of cottons and rayons was found to be induced by absorbed inorganic impurities, which may be largely removed by a water rinse compounds identified as promoting smolder included salts and hydroxides of monovalent metals, and salts of iron and lead. these compounds were found to effect an increase in the yield and reactivity of char..

computer science and technology: local area networking. report of a workshop held at the national bureau of standards, gaithersburg, maryland on august 22-23, 1977,

this is the report of a workshop convened at the national bureau of standards on august 22-23, 1977, to discuss the different technologies applicable to computer networks serving a limited geographic area, such as a single campus, factory or office complex a number of short presentations were made by active researchers and implementers in..

pest control: an assessment of present and alternative technologies volume iii. cotton pest control

profitable cotton production in the united states depends upon the successful application of good management practices to a wide range of soil and climatic conditions. topics discussed in this volume include: (a) the range of future economic environments in which cotton might be produced; (b) market conditions and other factors that affec..

insect control in the people's republic of china

the report assesses china's national policies and practices in pest management as one aspect of its broader agricultural development policy. topics of discussion include: an evaluation of teaching and research in entomology; insect problems and control on different commodities such as rice, cotton, grain, and fruits and vegetables, as wel..

the flexibility of weathered rubber-coated fabrics

the effects of 1 year of weathering on the flexibility of rubber-coated fabrics was studied in 208 combinations of base fabric, rubber type, time, site and stress level. throughout, coated nylon fabrics were thicker, heavier and less flexible than coated cotton fabrics, the base fabrics being similar in mass per unit area fabrics coated w..

cost-benefit analysis of interactive systems. / reprint: cost-benefit analysis of interactive systems

this report assesses the state-of-the-art in cost-benefit analyses of interactive systems and suggests an approach for developing improved methodology. cost-benefit analyses are distinguished from analyses of system performance in that the latter are directed at optimizing system performance at a given level of investment, while the forme..