Cephalexin is an important antibiotic. It is very significant to determine an appropriate method for the extraction of this valuable antibiotic for industrial applications. Aiming at developing an efficient method for the extraction of cephalexin, the partitioning of cephalexin has been evaluated in aqueous two-phase system, including cholinium chloride and potassium phosphate. The effect of th...

in this paper, a multi-objective method is used to optimize a heat recovery steam generator (hrsg). two objective functions have been used in the optimization, which are irreversibility and hrsg equivalent volume. the former expresses the exergetic efficiency and the latter demonstrates the cost of the hrsg. decision variables are geometric and operational parameters of the hrsg. the results of...

BACKGROUND There is an ongoing discussion whether thyroid hormones are involved in the development and course of attention deficit/hyperactivity disorder (ADHD). Since obesity is associated with both higher thyroid-stimulating hormone (TSH) and free triiodothyronine (fT3) concentrations and increased rates of ADHD, we hypothesized that overweight children with ADHD show higher TSH and fT3 conce...

Abstract   An empirical investigation was carried out to study convective heat transfer of nanofluid flow inside an inclined copper tube under uniform heat flux condition. Required data are acquired for laminar and hydrodynamically fully developed flow inside round tube. The stable CuO-base oil nanofluid with different nanoparticle weight fractions of 0.5%, 1% and 2% was produced by means of ul...

The molecular weight of bovine thyrotropin has been estimated by several investigators. In 1955, Fels, Simpson, and Evans (1) prepared bovine thyroid-stimulating hormone of 1 to 4 units per mg by a method of trichloroacetic acid fractionation and obtained a sedimentation coefficient of 1.02 by ultracentrifugation. They estimated the molecular weight to be 10,000. In 1956, Pierce and Nyc (2) by ...

l. A simple technique was developed for accurately predicting the biomass of the freshwater prosobranch Viuiparus contectoides (Mesogastrapoda: Viviparidae) (Binney, 1865). 2. Regression of dry weight (biomass) on wet weight yielded a regression coefficient (r’) of 0.99 with an associated P < 0.001. 3. Biomass, therefore, can be predicted by measuring wet weights without sacrificing specimens.

The physicochemical properties of bovine prothrombin and of bovine thrombin were previously described in this journal (1, 2). A derivative of bovine prothrombin, autoprothrombin II, has now been obtained in sufficient quality and quantity for study. In this report we describe some of the physicochemical properties of our product, including sedimentation coefficient, diffusion coefficient, intri...

For a nonnegative integrable weight function w on the unit circle T , we provide an expression for p = 2, in terms of the series coefficients of the outer function of w, for the weighted Lp distance inff T |1 − f |pwdμ, where μ is the normalized Lebesgue measure and f ranges over trigonometric polynomials with frequencies in [{. . . ,−3,−2,−1}\{−n}]∪{m}, m ≥ 0, n ≥ 2. The problem is open for p ...

If Fq is a finite field and G is a subgroup of the linear automorphisms of F q , a solution to the problem of finding all the G-invariant linear codes C of F q (i.e. such that g(C) = C for all g ∈ G) is offered. This will be referred as the invariance problem. When n = |G|t, we determine conditions for the existance of an isomorphism of Fq[G]modules between F q and Fq[G]× · · · × Fq[G] (t-times...