using the mixed solvents, (water +ethanol + propanol), the solubility of cdf2 was determined byevaporating method at 25° c. the results showed that the sollbility, s, of cdf2 decreases bydecreasing the dielectric constant of the mixed solvent .once the solubility of cdf2 was determined,the concentration solubility product, ksp(c)=4s3, was calculated .furthermore ,by estimating the meanactivity ...

We develop a spatial model in which consumers receive firm-specific location shocks and firms endogenously determine both franchise/product locations and prices. Remarkably, firms fail to profit from endogenous product-specific heterogeneity alone: while ex-post consumer heterogeneity ensures positive gross profits, competition for market share results in socially-excessive product lines and ze...

Abstract We consider a product $X=E_1\times \cdots \times E_d$ of elliptic curves over finite extension $K$ ${\mathbb{Q}}_p$ with combination good or split multiplicative reduction. assume that at most one the has supersingular Under these assumptions, we prove Albanese kernel $X$ is direct sum group and divisible group, extending work by Raskind Spiess to cases include phenomena. Our method in...

Genetic correlation coefficients between egg quality traits were studied using fiftysix harco pullets raised under standard management practices. The estimates were carried out at 22-week, 26-week, 30-week and 32-week of age. Egg quality traits studied include egg weight (EW), shell thickness (ST), haugh unit (HU), yolk index (YI) and shape index (SI). Zero to slight negative correlation coeffi...

A GCP-controlled, randomised and blind trial used 2 layer houses naturally infested with D. gallinae. One house with space for 23,000 hens was treated with an aqueous solution (2,000 ppm Phoxim, 25 ml/hen place) twice 7 days apart. The second house with space for 21,000 hens was not treated. For quantitative assessment of mite population, 20 cardboard traps per house were deployed onto the cage...

Satellite remote sensing of smoke aerosol-cloud interaction during the recent Smoke, Clouds, and Radiation–Brazil (SCAR–B) experiment is analyzed to explore the factors that determine the magnitude of the cloud response to smoke aerosol. Analysis of 2 years worth of data revealed that the response is greatest in the north of Brazil where aerosol optical depth is smallest, and tends to decrease ...

An influential theoretical literature supports a discriminatory explanation for product bundling: it reduces consumer heterogeneity, sorting consumers in a manner similar to 2nd-degree price discrimination. This paper tests this theory and quantifies its importance in the cable television industry. The results provide strong support for the theory and suggest that bundling a top-15 cable networ...