In this study, a novel flocculant was prepared by an inorganic polymetric flocculant (IPF) polysilicate ferroaluminum sulfate (PSFA) and rectorite (REC). The structure of the PSFA-REC composite was characterized by Fourier transform infrared (FT-IR) spectroscopy and X-ray diffraction (XRD), in order to determine the optimal temperature. The flocculation test was made at 25 , 45 and 65 , the res...

RecA protein promotes a substantial DNA strand exchange reaction in the presence of adenosine 5'-O-3-(thio)triphosphate (ATP gamma S) (Menetski et al., 1990), calling into question the role of ATP hydrolysis in this reaction. We demonstrate here that the ATP gamma S-mediated process is restricted to homologous strand exchange reactions involving three strands. In four-strand exchanges between a...

Superoxide dismutase (SOD) catalyzes the dismutation of the biologically toxic superoxide anion into oxygen and hydrogen peroxide and is deployed by the immune system to kill invading microorganisms. Extracellular SOD (EC-SOD) is a copper- and zinc-containing glycoprotein found predominantly in the soluble extracellular compartment that consists of approximately 30-kDa subunits. Here, we purifi...

The objective of this study was to determine copy number variant (CNV) and promoter genetic variants in glutathione S-transferase Mu class 1 (GSTM1) and the risk of recurrence (REC)/second primary tumor (SPT) in patients with previously diagnosed early stage head and neck cancer. Among 441 subjects, 133 experienced REC and/or an SPT, while 308 had single primary disease. TaqMan real-time polyme...

The present study was carried out to evaluate the role of apoptotic proteins in REC-2006-mediated radiation protection in hepatoma cell lines. REC-2006 treatment 2 h before irradiation strongly inhibited the cleavage of ATM and PARP-1 in HepG2 cells. The expression of nuclear apoptosis inducing factor (AIF) was found to be more inhibited (~17%) in HepG2 cells in REC-2006 + radiation-treated gro...

OBJECTIVES To evaluate user satisfaction among practices receiving services provided by the Arizona Regional Extension Center (REC). METHODS This program evaluation utilized a mixed-methods approach including: 1) a mail-based survey targeting all 489 REC member practices; and 2) a series of telephone-based focus groups using a convenience sample of rural and urban REC member practices. Target...

The uvr mutations of Escherichia coli K-12 decrease the ability of cells to survive ultraviolet light (UV), to excise pyrimidine dimers from their deoxyribonucleic acid and to reactivate bacteriophage exposed to UV. The rec mutations decrease the ability of the cells to survive UV and to undergo genetic recombination. Certain rec mutations, including recA1, rec-12, recA13, and rec-56, are neces...

Twenty ASA physical status Class III patients undergoing cadaver renal transplantation were studied. After 90 per cent T1 recovery, as determined by train-of-four measurement, from 1.0 mg.kg-1 succinylcholine to facilitate tracheal intubation, nine patients received atracurium 0.25 mg.kg-1 (Group I) and 11 patients received vecuronium 0.05 mg.kg-1 (Group II) intravenously. The following measure...

The pharmacological properties of cyclohexanecarboxylic acid, {2-[4-(2-bromo-5-methoxybenzyl)piperazin-1-yl]ethyl}-(2-trifluoromethoxyphenyl)amide (Rec 27/0224), and cyclohexanecarboxylic acid, (2-methoxy-phenyl)-{2-[4-(2-methoxyphenyl)-piperazin-1-yl]ethyl}amide (Rec 27/0074), were characterized using radioligand displacement and guanosine 5'-O-(3-[35S]thiotriphosphate) ([35S]GTPgammaS) bindin...

Abstract Let $A \subseteq \{0,1\}^n$ be a set of size $2^{n-1}$ , and let $\phi \,:\, \{0,1\}^{n-1} \to A$ bijection. We define the average stretch $\phi$ as \begin{equation*} {\sf avgStretch}(\phi ) = {\mathbb E}[{{\sf dist}}(\phi (x),\phi (x'))], \end{equation*} where expectation is taken over uniformly random $x,x' \in \{0,1\}^{n-1}$ that differ in exactly one coordinate. In this paper, we c...