نتایج جستجو برای: polyethylene

تعداد نتایج: 31555  

2011
Gang Chen Carl Richard Soderberg Vazrik Chiloyan

Polymer fiber drawing creates fibers with enhanced thermal conductivity and strength compared to bulk polymer because drawing aligns the molecular chains. I optimize the polymer fiber drawing method in order to achieve polymer fibers that are drawn to lengths exceeding 1cm and develop a method to cut and store them for future experimental purposes. With lengths exceeding 1cm, starting with leng...

2013
Mark Heldreth

For a given applied compressive load across the tibio-femoral joint, wear is therefore primarily a function of the area of polyethylene under cross-shear and the total relative sliding distance between the femoral and polyethylene insert articulating surfaces. Andriacchi et al. described the significant degree of relative sliding which can occur between the femoral and tibial articulation surfa...

Journal: :Clinical chemistry 1976
H S Schiller M A Brammall

We describe a rapid, reliable radioimmunoassay for unconjugated estriol in plasma. Polyethylene glycol (Carbowax 6000) is used to separate antibody-bound and free steroid. The assay is sensitive (25 pg for standards), precise, and accurate. At high and low concentrations of estriol, intra-assay coefficients of variation were 7.1% and 7.6%, respectively, and inter-assay coefficients of variation...

2017
Emmanuel Richaud Bruno Flaconnèche Jacques Verdu Emmanuel RICHAUD Bruno FLACONNÈCHE Jacques VERDU

This paper reports solubility and diffusivity data for soy and rapeseed methyl esters in polyethylene together with comparisons with methyl oleate and linoleate. These data showed that there is no significant difference in diffusivity and solubility between all these penetrants. Data were used to discuss the reliability of predictive models for diffusion and solubility of additive type molecule...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
ali reza kiasat maryam zayadi fatemeh mohammad-taheri mehdi fallah-mehrjard

polyethylene glycol was easily grafted to silica gel and used as a solid–liquid phase transfer catalyst in the reduction of aromatic nitro compounds. this silica-grafted polyethylene glycol is proved to be an efficient heterogeneous catalyst in the reduction of nitroarenes to the corresponding aromatic amines with zinc powder in water. the reduction reactions proceeded efficiently with excellen...

Journal: :DEStech Transactions on Materials Science and Engineering 2017

Journal: :journal of the Japan Society for Testing Materials 1959

Journal: :Polymer Journal 1987

Journal: :YAKUGAKU ZASSHI 1953

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