Now showing items 31-40 of 55
Three-dimensional solubility parameters and chemical protective clothing permeation. II. Modeling diffusion coefficients, breakthrough times, and steady-state permeation rates of organic solvents in Viton® gloves
(Wiley Subscription Services, Inc., A Wiley Company, 1993-10-15)
Three-dimensional (3-D) solubility parameters are used in separate models of the solubility, S , and diffusion coefficient, D , of organic solvents in polymers. Modeled values of these variables are then combined in ...
Ultrasonic measurements of the elastic moduli of liquid crystalline polymers
(Elsevier, 1992)
The five independent elastic moduli of extruded rods of two thermotropic liquid crystalline polymers, Vectra B900 and Vectra A950, and the nine independent moduli of an injection-moulded bar of Vectra A950 have been measured ...
Semiparametric quasilikelihood and variance function estimation in measurement error models
(Elsevier, 1993-07)
We consider a quasilikelihood/variance function model when a predictor X is measured with error and a surrogate W is observed. When in addition to a primary data set containing (Y,W) a validation data set exists for which ...
The preparation and morphology of PPO–epoxy blends
(Wiley Subscription Services, Inc., A Wiley Company, 1993-05-10)
Poly(phenylene oxide) (PPO) was found to be miscible in diglycidyl ether of bisphenol A (DGEBA) based epoxy. The PPO–DGEBA system exhibited upper critical solution temperature (UCST) behavior. The cloud point temperatures ...
Semiparametric instrumental variable estimation of simultaneous equation sample selection models
(Elsevier, 1994-08)
The identification and estimation of a semiparametric simultaneous equation model with selectivity have been considered. The identification of structural parameters from reduced form parameters in the semiparametric model ...
Fatigue craze initiation in polycarbonate: study by small-angle X-ray scattering
(Elsevier, 1994-09)
The structural changes that occur during the incubation stage of tensile fatigue failure of glassy polycarbonate are investigated by means of small-angle X-ray scattering. The results are interpreted as the formation of ...
Semiparametric two-stage estimation of sample selection models subject to Tobit-type selection rules
(Elsevier, 1994-04)
A semiparametric two-stage estimation method is proposed for the estimation of sample selection models which are subject to Tobit-type selection rules. With randomization restrictions on the disturbances of the model, all ...
Preparation and characterization of maleimide-terminated poly(arylene ether sulfone) oligomers of various molecular weights
(Wiley Subscription Services, Inc., A Wiley Company, 1991-11-20)
A new variation in the bismaleimide (BMI) resin family, maleimide-terminated poly(oxy-1,4-phenylene sulfonyl-1,4-phenylene) oligomers, has been synthesized. The preparation of oligomers ( n = 1–12) is described in this ...
Clustering problems in optimization models
(Kluwer Academic Publishers; Springer Science+Business Media, 1996-08)
We discuss a variety of clustering problems arising in combinatorial applications and in classifying objects into homogenous groups. For each problem we discuss solution strategies that work well in practice. We also discuss ...
A quantitative adhesion test for thin polymer films on silicon substrates
(Wiley Subscription Services, Inc., A Wiley Company, 1991-10-05)
The standard 90° peel test was modified in order to apply it to testing adhesion of thin polymer films to surfaces of silicon substrates, such as the silicon nitride passivation layer used in our solid-state chemical ...