A kind of 2.5-dimensional C/C-SiC composites was fabricated by using Isothermal Chemical Vapour Infiltration process (ICVI). Frictional properties of this material were evaluated by using MM-1000 under dry condition. Average dynamic friction coefficient of it was 0.16, static friction coefficient and average coefficient stability were 0.15 and 0.56, respectively. However, weight wear rate was l...

We present a calculation of the Hall coefficient in 2H-TaSe(2) and 2H-Cu(0.2)NbS(2) based on their electronic structure extracted from angle-resolved photoemission spectra. The well-known semiclassical approach, based on the solution of the Boltzmann equation, yields the correct value for the normal-state Hall coefficient. Entering the charge density wave state results in the opening of the pse...

OBJECTIVES To investigate the association between birth weight and blood pressure (BP) and to determine the effect of body size change from birth to adulthood on BP. DESIGN A cross-sectional design to collect retrospective data. PARTICIPANTS 1253 female nurses aged 35-65 years in Hong Kong. MAIN OUTCOME MEASURES Birth weight, height, weight, BP, waist circumference, demographics and lifes...

Diffusion and sorption of Biodegradable blends of sodium alginate (SA) and lignosulphonic acid (LS) has been studied at room temperature by conventional weight gain experiments. The sorption studies of SA/LS blends are carried in pH medium of 7.4. The sorption data are used to evaluate the mass transfer coefficients such as intrinsic diffusion coefficient and permeation coefficient. It was obse...

We report on photorefractive composites composed of poly~N-vinyl carbazole! ~PVK!/liquid crystal/C60 with PVK of different molecular weight ~MW!. The influence of MW on the photorefractivity was studied. The results show that a higher MW leads to a larger two-beam coupling coefficient G and a larger effective electric–optical coefficient. G over 200 cm is observed for the composite based on the...

This paper presents a new correlation coefficient measure, which satisfies the requirement of this measure equaling one if and only if two interval neutrosophic sets (INSs) are the same. And an objective weight of INSs is presented to unearth and utilize deeper information that is uncertain. Using the proposed weighted correlation coefficient measure of INSs, a decision-making method is develop...

In this paper, we consider three problems about signs of the Fourier coefficients of a cusp form f with half-integral weight: – The first negative coefficient of the sequence {af(tn)}n∈N, – The number of coefficients af(tn ) of same signs, – Non-vanishing of coefficients af(tn ) in short intervals and in arithmetic progressions, where af(n) is the n-th Fourier coefficient of f and t is a square...

A method is described for determining the diffusion coefficient of solutes by determining the rate of passage of the solute through a thin porous membrane between two solutions of different concentration. The method has been used to determine the diffusion coefficient of carbon monoxide hemoglobin. This was found to be 0.0420 +/- 0.0005 cm.(2) per day at 5 degrees C. The molecular weight of car...

In the general population, there is an inverse relationship between birth weight and adult systolic blood pressure. Because blood pressure in diabetic patients at least in part seems to be regulated by different mechanisms than in nondiabetic subjects, it is not known whether a similar correlation exists in diabetic individuals. Therefore, we obtained data on birth weight from original birth ce...