effect of humidity on soiling behavior of textiles

soiling of cotton, crosslinked cotton, and polyester fabrics with a model particulate and a mixed soil has been investigated at different levels of relative humidity. measurements have been repeated with fabrics containing sorbed liquid water. soiling with oil increases with increase in relative humidity up to approx. 65 and then decreses..

magnetooptic effects in weakly ferromagnetic rhombohedral antiferromagnets

a study is made of the change in the polarization of light traveling in a direction close to the principal symmetry axis of weakly ferromagnetic rhombohedral antiferromagnets. the contributions of all the complex components of the permittivity tensor are included and the effects of rotation of the major axis of the polarization ellipse an..

measurement of the magnetic birefringence of noble gases

the cotton-mouton constants of argon, krypton, and xenon have been measured relative to nitrogen at room temperature and ambient pressure for $lambda$ $equals$ 514. 5 nm. upper limits for helium and neon have been determined. the sensitivity of the apparatus was $delta$ n(min) $equals$ 0. 8 $multiplied by$ 10** $minus$ **1**4 for a measur..

method of sensitivity enhancement in uhf water-content measurement

a study of water-content measurement methods has shown that the uhf methods are the most suitable for solid and powder materials, in particular the products from cottonseed oil extraction. the sensitivity is dependent on the thickness of the material and on the amounts of bound and free water. therefore, the thickness and the water-conten..

fungal degradation of cotton cordages under outdoor weathering

the indian tropical climatological conditions are ideal for generating optimum fungal activity and all types of service stores made from cotton have been found to suffer fungal attack resulting in their unserviceability and loss of materials. under tropical conditions the fungal degradation in cotton cordages is both intensive and extensi..

cooperative transient for atoms driven by a weak coherent field

a simple quantum-mechanical treatment of the cooperative interaction between an ensemble of two-level atoms initially in their ground state and the electromagnetic field inside a fabry-perot cavity, in the weak field limit is presented. it is shown that, in a first approximation, the evolution of the atom-field system in the general case ..

spe cotton valley symposium of the society of petroleum engineers, 1982

this conference proceedings contains 4 papers. topics covered include: calculation of water saturations in low porosity shaly gas sands; fracture design considerations based on pressure analysis; quality assurance as a part of hydraulic fracturing; and, higher sand concentrations in east texas. technical and professional papers from this ..

air- or gas-agitated process basket

the agitation of the process solution is a critical factor in the manufacture of printed circuit boards. the fixtures used to hold the boards during processing may contribute to insufficient agitation. a process basket is shown which has provisions for allowing agitation gas to pass through the basket itself

high field diamagnetic susceptibility and the 'curie-weiss law' in organic liquid

high field diamagnetic susceptibility of organic liquids is measured by means of linear magnetic birefringence (cotton-mouton effect) in pulsed high magnetic field up to 400 koe with special interest in the temperature dependence. it is found that the 'curie-weiss law' should widely be applied for the high field diamagnetic susceptibility..

concentrated winsor microemulsions: a small angle x-ray scattering study

a study of the structure of winsor microemulsions with brine and oil (toluene) proportions comparable and much larger than the surfactant (sodium dodecyl sulfate, sds) and cosurfactant (butanol 1) proportions by small angle x-ray scattering is described. 28 refs