Mouse monoclonal
anti-ZEA antibodies were immobilized on a rotating disk. The ZEA in corn sample is allowed to compete immunologically with ZEA bound to horseradish peroxidase (HRP) for the immobilized antibodies. HRP in presence of hydrogen peroxide (H2O2) catalyzes the oxidation of 4-tert-butylcatechol (4-TBC), whose back electrochemical reduction was detected on CNT-GCE at -0.15 V. The total assay time was 15 min. The electrochemical immunosensor showed higher sensitivity and lower detection https://www.selleckchem.com/products/ly3039478.html limits than the standard ELISA method, which shows potential for detecting ZEA in foods and feeds diagnosis. (C) 2010 Elsevier B.V. All rights reserved.”
“Spin injection from Fe(001) and (Ga,Mn) As(001) into n-GaAs(001) was investigated using a method which provides two-dimensional cross-sectional
images of the spin polarization in GaAs. While the distribution of the spin polarization below the injecting contact is https://www.selleckchem.com/products/citarinostat-acy-241.html nearly uniform for (Ga,Mn) As, a strong confinement near the contact edge is observed for Fe and FeCo. The spin polarization in GaAs changes sign when the injected current is reversed. Multiple sign reversals as a function of bias voltage as reported previously for Fe injectors are not observed with (Ga,Mn) As and Fe contacts grown on clean n(++)-GaAs in agreement with earlier results for an epitaxial FeCo injector. (C) 2011 American Institute of Physics. [doi:10.1063/1.3553932]“
“Fourier transform infrared spectroscopy (FTIR) was used to determine characteristic absorption peaks of softwood kraft lignin and soda hardwood lignin. Remarkable spectral differences were noticed between the different lignins due to their various chemical structures. Proton nuclear magnetic resonance spectrometry ((1)H NMR) was employed to analyze the structure of lignin. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF) provided important data regarding the molecular weight distribution of lignin. Thermal stability of softwood
lignin was found to be remarkably higher than that of hardwood lignin. Softening temperature and glass transition temperature of lignin were measured by differential scanning calorimetry (DSC) which was useful in selleck chemicals llc selecting an optimal temperature profile during extrusion process. Rheological studies provided valuable information about the viscosity of lignins. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122: 956-963, 2011″
“A novel bioflocculant, methylated soy protein (MeSP), has been developed and its flocculation performance was tested with diatomite suspensions in freshwater (pH 2-11) and in seawater. The flocculation performance of MeSP was much higher than that of commercial polyaluminum chloride (PAC) in terms of supernatant clarity and floc settling velocity.