Potential threats caused by something like real fingers, which are called fake or artificial should be crucial for authentication based on fingerprint systems. Security evaluation against attacks using such fingers has been rarely disclosed. Only in patent literature, measures, as live and well detection, have proposed. However, the providers of systems usually do not mention whether these measures actually implemented emerging PCs smart cards portable terminals, expected to enhance grade...

Anion conductive aromatic multiblock copolymers, poly(arylene ether)s containing quaternized ammonio-substituted fluorene groups, were synthesized via block copolycondensation of fluorene-containing (later hydrophilic) oligomers and linear hydrophobic oligomers, chloromethylation, quaternization, ion-exchange reactions. The ammonio groups selectively introduced onto the units. copolymers (QPEs) produced ductile, transparent membranes. A well-controlled structure was responsible for developed...

Move over, platinum: A Pt-free direct hydrazine fuel cell (DHFC), which uses an anion-exchange polymer electrolyte, shows a maximum power-generation performance of 0.5 W cm−2 (1250 mA at 0.4 V). Its is comparable to that the hydrogen electrolyte (PEFC) and far exceeds methanol (DMFC). Supporting information for this article available on WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z701334_s.pdf or from author. Please note: The publisher not responsible content functionality any...

We report the discovery of a highly active Ni-Co alloy electrocatalyst for oxidation hydrazine (N(2)H(4)) and provide evidence competing electrochemical (faradaic) chemical (nonfaradaic) reaction pathways. The conversion on catalytic surfaces in fuel cells is great scientific technological interest, because it offers multiple redox states, complex pathways, significantly more favorable energy power densities compared to hydrogen fuel. Structure-reactivity relations Ni(60)Co(40) are presented...

The oxygen reduction reaction (ORR) processes in alkaline media that occur on a family of electrocatalyst materials derived from Co containing precursor and polypyrrole/C composite material (PPy/C) are investigated here. effects loading heat treatment temperature the CoPPy/C revealed through structural evaluations electrochemical studies. Principle component analysis (PCA), mutivariant (MVA) technique, is used to establish structure-to-property correlations for materials. In all cases,...

The effects of conjugated linoleic acid (CLA) on the levels chemical mediators in peritoneal exudate cells, spleen and lung, concentration immunoglobulins mesenteric lymph node splenic lymphocytes serum were examined rats. After feeding diets containing either 0 (control), 0.5 or 1.0% CLA for 3 wk, there was a trend toward reduction release leukotriene B4 (LTB4) from cells response to dietary levels. However, did not appear affect histamine. A similar dose-response pattern also observed...

(–)-Epigallocatechin-3-gallate (EGCG), the principal polyphenol in green tea, has been shown to be a potent chemopreventive agent. Recently, 67-kDa laminin receptor (67LR) identified as cell surface for EGCG that mediates anticancer activity of EGCG. Indeed, expression 67LR confers responsiveness tumor cells; however, molecular basis <i>in vivo</i> is not entirely understood. Here we show (i) using direct genetic screen, eukaryotic translation elongation factor 1A (eEF1A) component...

This clinical study was conducted to investigate the safety and effect of D-psicose on postprandial blood glucose levels in adult men women, including borderline diabetes patients. A randomized double-blind placebo-controlled crossover experiment single ingestion 26 subjects who consumed zero or 5 g tea with a standard meal. The at fasting 30, 60, 90, 120 min after meal were compared. level significantly lower 30 60 (p<0.01, p<0.05), significant decrease also shown area under curve (p<0.01)....

The Asia Pacific Society of Infection Control (APSIC) launched the APSIC Guidelines for Prevention Surgical Site Infections in 2018. This document describes guidelines and recommendations setting prevention surgical site infections (SSIs). It aims to highlight practical a concise format designed assist healthcare facilities at region achieving high standards preoperative, perioperative postoperative practices.The were developed by an appointed workgroup comprising experts region, following...

In this study, we investigated the estrogenic activity of environmental estrogens by a competition binding assay using human recombinant receptor (hERβ) and proliferation MCF-7 cells sulforhodamine-B assay. assay, pharmaceuticals had stronger to hERβ than that some phytoestrogens (coumestrol, daidzein, genistein, luteolin, chrysin, flavone, naringenin) or industrial chemicals, but such as coumestrol strong 17α-ethynylestradiol (EE), tamoxifen (Tam), mestranol. diethylstilbestrol, EE, Tam,...

A sensorless-control technique for improving the performance of interior permanent-magnet synchronous-motor control such as operating speed range and position estimation accuracy is proposed herein. The method presented based on an extended electromotive force in a rotating reference frame. difference between voltage actual inverter modeled compensated order to improve stability sensorless drive system. Moreover, online parameter-identification applied estimation. effects scheme are...

A platinum-free fuel cell using liquid hydrazine hydrate as the and comprised of a cobalt or nickel anode cathode exhibits high performance. In this study, performances nickel, cobalt, platinum catalysts are evaluated compared. It is found that performance in case higher than platinum. Further, anodic reactions discussed by comparing consumption ammonia generation when used catalyst. Cobalt rate decomposition nickel. Nickel to be most suitable catalyst among above mentioned for cell. The...

Population density-dependent dispersal is a well-characterized strategy of animal behavior in which rate increases when population density higher. Caenorhabditis elegans shows positive chemotaxis to set odorants, but the switches from attraction after prolonged exposure odorants. We show here that this plasticity olfactory dependent on and regulation mediated by pheromonal signaling. peptide, suppressor NEP-2 (SNET-1), negatively regulates its expression down-regulated pheromone. NEP-2,...

Background We previously identified the 67-kDa laminin receptor (67LR) as cell-surface conferring major green tea polyphenol (–)-epigallocatechin-3-O-gallate (EGCG) responsiveness to cancer cells. However, underlying mechanism for interaction between EGCG and 67LR remains unclear. In this study, we investigated possible role of EGCG-67LR responsible its bioactivities. Methodology/Principal Findings synthesized various peptides deduced from extracellular domain corresponding 102-295 region...

The Ras/Raf/MEK/ERK pathway has been identified as a major, druggable regulator of melanoma. Mutational activation BRAF is the most prevalent genetic alteration in human melanoma, resulting constitutive melanoma hyperproliferation. A selective inhibitor showed remarkable clinical activity patients with mutated BRAF. Unfortunately, acquire resistance to inhibitor, highlighting urgent need for new treatment strategies. Green tea polyphenol (-)-epigallocatechin-3-O-gallate (EGCG) inhibits cell...

Abstract The present study compared the effect of dietary conjugated linolenic acid (CLNA) on body fat and serum liver lipid levels with that CLA in rats. FFA rich linoleic acid, α‐linolenic CLA, or CLNA were used as experimental fats. Male Sprague‐Dawley rats (4 wk old) fed purified diets containing 1% one these After 4 feeding, adipose tissue weights, concentrations, tumor necrosis factor (TNF)‐α leptin levels, hepatic β‐oxidation activities measured. Compared and, more potently, found to...