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Nanomaterial-based Biosensors using Dual Transducing Elements for Solution Phase Detection

03-Mar-2015 | Ning Li; Xiaodi Su; Yi Lu, Analyst, 2015

Biosensors incorporating nanomaterials have demonstrated superior performance compared to their conventional counterparts. Most reported sensors use nanomaterials as a single transducer of signals, while biosensor designs using dual transducing elements have emerged as new approaches to further ...


Surgical models of Roux-en-Y gastric bypass surgery and sleeve gastrectomy in rats and mice

01-Mar-2015 | Bote G Bruinsma; Korkut Uygun; Martin L Yarmush; Nima Saeidi, Nature Protocols, 2015

Nature Protocols 10, 495 (2015). doi:10.1038/nprot.2015.027 Authors: Bote G Bruinsma, Korkut Uygun, Martin L Yarmush & Nima Saeidi Bariatric surgery is the only definitive solution currently available for the present obesity pandemic. These operations typically involve ...


Influence of Sodium Metabisulfite and Citric Acid in Soaking Process after Blanching on Quality and Storage Stability of Dried Chili

27-Feb-2015 | Kwanhathai Chaethong, Rungnaphar Pongsawatmanit, Journal of Food Processing and Preservation, 2015

Abstract Influence of sodium metabisulfite (Na2S2O5) and citric acid in soaking solution was investigated for enhancing dried chili quality. Fresh chili samples were blanched and soaked in nine solutions of Na2S2O5 and citric acid for 30 min before drying at 65C. Soaking with Na2S2O5 and ...


Separation and concentration of sulfonylurea herbicides in milk by ionic‐liquid‐based foam flotation solid‐phase extraction

27-Feb-2015 | Liyuan Zhang, Bocheng Cao, Di Yao, Runzhong Yu, Changqing Yu, Hanqi Zhang, Aimin Yu, Journal of Separation Science, 2015

The ultrasound‐assisted ionic liquid foam flotation solid‐phase extraction of sulfonylurea herbicides in milk was developed and validated. The proteins and lipids were isolated from the sample matrix by adding salt and adjusting pH value. The target analytes eluted from the solid‐phase ...


Conformational Changes in a Hyperthermostable Glycoside Hydrolase: Enzymatic Activity Is a Consequence of the Loop Dynamics and Protonation Balance

27-Feb-2015 | Leandro C. de Oliveira et al., PLoS ONE, 2015

by Leandro C. de Oliveira, Viviam M. da Silva, Francieli Colussi, Aline D. Cabral, Mario de Oliveira Neto, Fabio M. Squina, Wanius Garcia Endo-β-1, 4-mannanase from Thermotoga petrophila (TpMan) is a modular hyperthermostable enzyme involved in the degradation of mannan-containing ...


Estimation of Organic and Elemental Carbon Emitted from Wood Burning in Traditional and Improved Cookstoves Using Controlled Cooking Test

27-Feb-2015 | Pooja Arora; Suresh Jain, Environmental Science & Technology, 2015

Emission of various climate- and health-related pollutant species from solid biomass burning in traditional cookstoves is a global concern. Improved cookstoves serve as a possible solution to mitigate the associated impacts. However, there is a need to intensify the efforts in order to increase ...


Studies on Residue-Free Decontaminants for Chemical Warfare Agents

27-Feb-2015 | George W. Wagner, Environmental Science & Technology, 2015

Residue-free decontaminants based on hydrogen peroxide, which decomposes to water and oxygen in the environment, are examined as decontaminants for chemical warfare agents (CWA). For the apparent special case of CWA on concrete, H2O2 alone, without any additives, effectively decontaminates ...


[Report] Electron-hole diffusion lengths > 175 μm in solution-grown CH3NH3PbI3 single crystals

27-Feb-2015 | Qingfeng Dong; Yanjun Fang; Yuchuan Shao; Padhraic Mulligan; Jie Qiu; Lei Cao; Jinsong Huang, Science , 2015

Long, balanced electron and hole diffusion lengths greater than 100 nanometers in the polycrystalline organolead trihalide compound CH3NH3PbI3 are critical for highly efficient perovskite solar cells. We found that the diffusion lengths in CH3NH3PbI3 single crystals grown by a solution-growth ...


A high-throughput and selective method for the measurement of surface areas of silver nanoparticles

25-Feb-2015 | Yuana Elly Agustin; Shen-Long Tsai, Analyst, 2015

A high-throughput and selective method based on biomolecule affinity coordination was employed for measuring nanoparticle surface area in solution. In this design, silver binding peptides (AgBPs) are immobilized on bacterial cellulose via the fusion with cellulose binding domains to capture ...


An ESIPT-based fluorescent probe for highly selective and ratiometric detection of mercury (II) in solution and in cells

25-Feb-2015 | Biao Gu; Liyan Huang; Naxiu Mi; Peng Yin; Youyu Zhang; Xin-Man Tu; Xu-Biao Luo; Shenglian Luo; Shouzhuo Yao, Analyst, 2015

A novel ratiometric fluorescent Hg2+ detecting system was rationally developed based on the typical excited state intramolecular proton transfer (ESIPT) characteristic of the latent fluorophore, 2-(1-(p-tolyl)-1H-phenanthro[9,10-d]imidazol-2-yl)phenol (Pol) and the Hg2+-mediated the cleavage of ...


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