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https://www.readbyqxmd.com/read/29677705/in-house-validation-and-small-scale-collaborative-study-to-evaluate-analytical-performances-of-multi-mycotoxin-screening-methods-based-on-liquid-chromatography-high-resolution-mass-spectrometry-case-study-fusarium-toxins-in-wheat
#1
Biancamaria Ciasca, Michelangelo Pascale, Valerio Guido Altieri, Francesco Longobardi, Michele Suman, Dante Catellani, Veronica M T Lattanzio
A strong trend toward using highly selective mass spectrometry technologies for screening of multiple mycotoxins has been observed in recent years. In the present study, the process of validation of a multi-mycotoxin screening method based on liquid chromatography high-resolution mass spectrometry method is presented. The method was intended for the simultaneous screening of the major Fusarium toxins (deoxynivalenol, 3- and 15-acetyl deoxynivalenol, T-2 and HT-2 toxins, zearalenone, enniatins A, A1, B, B1, beauvericin) in wheat...
April 20, 2018: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/29677692/full-color-emitting-fluorescent-carbon-material-as-reversible-ph-sensor-with-multicolor-live-cell-imaging
#2
Vinay Sharma, Navpreet Kaur, Pranav Tiwari, Shaikh M Mobin
Carbon-based nano materials are developed as a cytocompatible alternative to semiconducting quantum dots for bioimaging and fluorescence-based sensing. The green alternatives for the synthesis of carbon materials are imminent. The present study demonstrates microwave based one step quick synthesis of fluorescent carbon material (FCM) having three variants: (i) un-doped fluorescent carbon material (UFCM) (ii) nitrogen doped FCM (N@FCM), and (iii) nitrogen & phosphorus co-doped FCM (N-P@FCM) using sugarcane extract as a carbon source...
April 11, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29677662/exploring-the-potential-of-lactic-acid-production-from-lignocellulosic-hydrolysates-with-various-ratios-of-hexose-versus-pentose-by-bacillus-coagulans-ipe22
#3
Yujue Wang, Weifeng Cao, Jianquan Luo, Yinhua Wan
The aim of this study was to investigate the feasibility of utilizing different lignocellulosic hydrolysates with various hexose versus pentose (H:P) ratios to produce lactic acid (LA) from Bacillus coagulans IPE22 by fermentations with single and mixed sugar. In single sugar utilization, glucose tended to promote LA production, and xylose preferred to enhance cell growth. In mixed sugar utilization, glucose and pentose were consumed simultaneously when glucose concentration was lower than 20 g/L, and almost the same concentration of LA (50 g/L) was obtained regardless of the differences of H:P values...
April 5, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29677661/opac-orange-peel-activated-carbon-derived-from-waste-orange-peel-for-the-adsorption-of-chlorophenoxyacetic-acid-herbicides-from-water-adsorption-isotherm-kinetic-modelling-and-thermodynamic-studies
#4
Aarthi Pandiarajan, Ramakrishnan Kamaraj, Sudharshan Vasudevan, Subramanyan Vasudevan
This study presents the orange peel activated carbon (OPAC), derived from biowaste precursor (orange peel) by single step pyrolysis method and its application for the adsorption of chlorophenoxyacetic acid herbicides from the water. The OPAC exhibited the surface area of 592.471 m2  g-1 , pore volume and pore diameter of 0.242 cc g-1 and 1.301 nm respectively. The adsorption kinetics and thermodynamic equilibrium modelling for all chlorophenoxyacetic acid herbicides were investigated. The various parametric effects such as pH and temperature were evaluated...
April 12, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29677656/process-for-calcium-xylonate-production-as-a-concrete-admixture-derived-from-in-situ-fermentation-of-wheat-straw-pre-hydrolysate
#5
Xin Zhou, Xuelian Zhou, Xiusheng Tang, Yong Xu
One of the major obstacles in process of lignocellulosic biorefinery is the utilization of pre-hydrolysate from pre-treatment. Although lignocellulosic pre-hydrolysate can serve as an economic starting material for xylonic acid production, the advancement of xylonic acid or xylonate is still limited by further commercial value or applications. In the present study, xylose in the high concentration wheat straw pre-hydrolysate was first in-situ biooxidized to xylonate by Gluconobacter oxydans. To meet the needs of commercialization, crude powdered calcium xylonate was prepared by drying process and calcium xylonate content in the prepared crude product was more than 70%...
April 10, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29677649/understanding-the-factors-affecting-the-adsorption-of-lanthanum-using-different-adsorbents-a-critical-review
#6
REVIEW
Sidra Iftekhar, Deepika Lakshmi Ramasamy, Varsha Srivastava, Muhammad Bilal Asif, Mika Sillanpää
Over the past few decades, removal and recovery of Lanthanum (La) have received great attention due to its significance in different industrial processes. In this review, the application of various adsorbents viz. biosorbents, commercial and hybrid materials, nanoparticles, nanocomposites etc. have been summarized in terms of the removal and recovery of La. The influence of various operating parameters including pH, dosage, contact time, temperature, coexisting ions, adsorption kinetics, isotherm and thermodynamics were investigated...
April 12, 2018: Chemosphere
https://www.readbyqxmd.com/read/29677612/synthesis-characterization-and-working-mechanism-of-a-novel-sustained-release-type-fluid-loss-additive-for-seawater-cement-slurry
#7
Lei Cao, Jintang Guo, Jianhua Tian, Yang Xu, Miaomiao Hu, Chun Guo, Meiyu Wang, Jinjie Fan
Synthetic polymer fluid loss additive (FLA), an important type of admixture, was broadly applied in modern well cementation. However, the filter loss volume and fluidity of cement pastes containing polymer-FLA would deteriorate remarkably when sea water was used in mixing slurries instead of fresh water. In this study, a novel sustained-release-type fluid loss additive(S-FLA) was synthesized by means of anion-exchange intercalation reaction between an anionic type-copolymer and a calcium/aluminum type-Layered Double Hydroxide (Ca/Al-LDH)...
April 4, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29677609/3d-mesoporous-cufe-2-o-4-as-a-catalyst-for-photo-fenton-removal-of-sulfonamide-antibiotics-at-near-neutral-ph
#8
Jinsuo Gao, Shouchun Wu, Yanling Han, Feng Tan, Yong Shi, Mengyao Liu, Xinyong Li
Increasing the amount of surface active sites of the material may be a feasible way to improve the efficiency ofthe generation of Fe2+ in the photo-Fenton process. In this work, a simple synthesis method was adopted to synthesize 3D ordered mesoporous CuFe2 O4 with large specific surface areaby using ferric nitrate and copper nitrate as the precursor and KIT-6 as the template. The synthesized materials were characterized by nitrogen adsorption-desorption, XRD, TEM, FT-IR and UV-vis DRS. The catalytic properties of the mesoporous material were thoroughly evaluated by activating hydrogen peroxide to remove sulfonamides in near neutral water...
April 1, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29677604/the-association-between-unemployment-and-depression-results-from-the-population-based-life-adult-study
#9
Andrea E Zuelke, Tobias Luck, Matthias L Schroeter, A Veronica Witte, Andreas Hinz, Christoph Engel, Cornelia Enzenbach, Silke Zachariae, Markus Loeffler, Joachim Thiery, Arno Villringer, Steffi G Riedel-Heller
BACKGROUND: Unemployment is a risk factor for impaired mental health. Based on a large population-based sample, in this study we therefore sought to provide detailed information on the association between unemployment and depression including information on (i) differences between men and women, (ii) differences between different types of unemployment, and (iii) on the impact of material and social resources on the association. METHODS: We studied 4,842 participants (18-65 years) of the population-based LIFE-Adult-Study...
April 10, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29677594/mechanisms-of-oxidative-stress-caused-by-cuo-nanoparticles-to-membranes-of-the-bacterium-streptomyces-coelicolor-m145
#10
Xiaomei Liu, Jingchun Tang, Lan Wang, John P Giesy
Toxic effects of widely used CuO nanoparticles (NPs) on the genus Streptomyces has been seldom studied. This work investigated toxicities of several sizes of CuO nanoparticles (NPs) to Streptomyces coelicolor M145 (S. coelicolor M145). Compared with NPs, toxicity of micrometer-sized CuO on M145 was trivial. In 0.9% NaCl, when the concentration of CuO NPs was 100 mg/L, survival of bacteria increased from 18.3% in 20 nm particles to 31.1% in 100 nm particles. With increasing concentrations of CuO, the level of ROS gradually increased and there were significant differences (p < 0...
April 17, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29677580/effects-of-a-skill-demonstration-video-delivered-by-smartphone-on-facilitating-nursing-students-skill-competencies-and-self-confidence-a-randomized-controlled-trial-study
#11
Yeu-Hui Chuang, Fu-Chih Lai, Chia-Chi Chang, Hsu-Tien Wan
BACKGROUND: The correct and appropriate performance of nursing skills by students can ensure patient safety and care quality. However, developing appropriate teaching and learning strategies to enhance nursing students' nursing skills and knowledge are challenging tasks for nursing faculty members. Nowadays, smartphones are popular mobile devices that are used on campuses by students and could be considered a potential tool to deliver learning materials to nursing students. OBJECTIVES: This study aimed to examine the effects of a skill demonstration video delivered by smartphone on facilitating nursing students' nursing skill competency and confidence...
April 7, 2018: Nurse Education Today
https://www.readbyqxmd.com/read/29677573/evidence-on-the-effectiveness-of-mosses-for-biomonitoring-of-microplastics-in-fresh-water-environment
#12
F Capozzi, R Carotenuto, S Giordano, V Spagnuolo
Mosses are well known as biomonitors of fresh water for metal pollutants, but no studies were reported so far about their ability to intercept plastic particles, although this kind of pollution has become an urgent issue worldwide. In the present work, the interaction between the moss Sphagnum palustre L. cultured in vitro and polystyrene nanoparticles (NPs) was studied for the first time in a laboratory experiment, in the view of using moss transplants for detecting microplastics in fresh water environments...
April 14, 2018: Chemosphere
https://www.readbyqxmd.com/read/29677562/effective-dose-calculation-program-edcp-for-the-usage-of-norm-added-consumer-product
#13
Do Hyeon Yoo, Jaekook Lee, Chul Hee Min
The aim of this study is to develop the Effective Dose Calculation Program (EDCP) for the usage of Naturally Occurring Radioactive Material (NORM) added consumer products. The EDCP was developed based on a database of effective dose conversion coefficient and the Matrix Laboratory (MATLAB) program to incorporate a Graphic User Interface (GUI) for ease of use. To validate EDCP, the effective dose calculated with EDCP by manually determining the source region by using the GUI and that by using the reference mathematical algorithm were compared for pillow, waist supporter, eye-patch and sleeping mattress...
April 9, 2018: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29677554/glass-polyalkenoate-cement-an-alternative-material-for-kyphoplasty-in-osteoporotic-vertebral-compression-fractures-an-ex-vivo-study
#14
Tim Leschinger, Karsten Engel, Gert Peter Brüggemann, Viktoria Dederer, Wolfram Friedrich Neiss, Max Joseph Scheyerer, Lars Peter Müller, Kilian Wegmann
Adjacent vertebral body fracture is described as a risk after vertebroplasty and kyphoplasty. It may be true that this phenomenon is caused precisely because of the frequently used polymethylmethacrylate cement (PMMA), which shows a higher level of stiffness than bone material and may ultimately lead to shifting stress levels within the entire spine. The goal of the present study was to evaluate and compare the pressure distribution in the endplate of human vertebrae after kyphoplasty with PMMA and aluminum-free glass-polyalkenoate cement (gpc)...
March 21, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29677528/low-arsenic-bioaccessibility-by-fixation-in-nanostructured-iron-hydr-oxides-quantitative-identification-of-as-bearing-phases
#15
Virginia S T Ciminelli, Daphne C Antônio, Claudia L Caldeira, Erico T F Freitas, Itamar Daniel Delbem, Marcus M Fernandes, Massimo Gasparon, Jack C Ng
A new analytical protocol was developed to provide quantitative, single-particle identification of arsenic in heterogeneous nanoscale mineral phases in soil samples, with a view to establishing its potential risk to human health. Microscopic techniques enabled quantitative, single-particle identification of As-bearing phases in twenty soil samples collected in a gold mining district with arsenic concentrations in range of 8 to 6354 mg kg-1 . Arsenic is primarily observed in association with iron (hydr) oxides in fine intergrowth with phyllosilicates...
March 29, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29677482/allosteric-ligands-for-the-pharmacologically-important-flavivirus-target-ns5-from-zinc-database-based-on-pharmacophoric-points-free-energy-calculations-and-dynamics-correlation
#16
Abbas Khan, Shoaib Saleem, Muhammad Idrees, Syed Shujait Ali, Muhammad Junaid, Aman Chandra Kaushik, Dong-Qing Wei
Dengue virus belongs to a group of human pathogens, which causes different diseases, dengue hemorrhagic fever and dengue shock syndrome in humans. It possesses RNA as a genetic material and is replicated with the aid of NS5 protein. RNA-dependent RNA polymerase (RdRp) is an important domain of NS5 in the replication of that virus. The catalytic process activity of RdRp is making it an important target for antiviral chemical therapy. To date, No FDA drug has been approved and marketed for the treatment of diseases caused by Dengue virus...
April 11, 2018: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29677445/new-amphiphilic-composite-for-preparing-efficient-coated-potassium-fertilizers-for-top-dressing-fertilization-of-annual-crops
#17
Oscar Urrutia, Javier Erro, Andre Vinicius Zabini, Kent Hoshiba, Anne Francoise Blandin, Roberto Baigorri, Manuel Martin-Pastor, Yves Alis, Jean-Claude Yvin, José María García-Mina
This study describes the efficiency of a new coating material for preparing granulated potassium-fertilizers with a potassium release to the soil solution sensitive to rainfall intensity. The composite is prepared by reaction of an alkyd-resin with cement in the absence of water. The complementary use of diverse analytical techniques showed that the presence of the cement fraction induced alkyd resin reticulation and gradual cement-resin hardening. Scanning electron microscopy revealed the formation of micro and nanopores within cement-clusters, whose water permeability is affected by the resin reticulation and amphiphilic character...
April 20, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29677404/hybrid-scaffolds-of-mg-alloy-mesh-reinforced-polymer-extracellular-matrix-composite-for-critical-sized-calvarial-defect-reconstruction
#18
Yingqi Chen, Sang-Ho Ye, Hideyoshi Sato, Yang Zhu, Vesselin Shanov, Tarannum Tiasha, Antonio D'Amore, Samuel Luketich, Guojiang Wan, William R Wagner
The challenge of developing scaffolds to reconstruct critical-sized calvarial defects without the addition of high levels of exogenous growth factor remains relevant. Both osteogenic regenerative efficacy as well as suitable mechanical properties for the temporary scaffold system are of importance. In this study, a Mg alloy mesh reinforced polymer/demineralized bone matrix (DBM) hybrid scaffold was designed where the hybrid scaffold was fabricated by a concurrent electrospinning/electrospraying of poly(lactic-co-glycolic) (PLGA) polymer and DBM suspended in hyaluronic acid (HA)...
April 20, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29677363/the-effect-of-denatured-lysozyme-on-human-corneal-epithelial-cells
#19
David J McCanna, Sarah Oh, Junghee Seo, Chantal Coles-Brennan, Zohra Fadli, Lakshman N Subbaraman, Lyndon W Jones
Purpose: During contact lens wear, the amount of lysozyme deposited on contact lenses varies depending on the lens material. The binding of lysozyme to some contact lens materials may result in a conformational change that denatures the protein to an inactive form. This investigation evaluated the effect that denatured lysozyme has on human corneal epithelial cells (HCECs) by measuring cell viability and the release of inflammatory cytokines. Methods: HCECs were exposed to lysozyme that was denatured to various activity levels...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29677326/the-visual-perception-of-metal
#20
James T Todd, J Farley Norman
The present research was designed to examine how the presence or absence of ambient light influences the appearance of metal. The stimuli depicted three possible objects that were illuminated by three possible patterns of illumination. These were generated by a single point light source, two rectangular area lights, or projecting light onto a translucent white box that contained the object (and the camera) so that the object would be illuminated by ambient light in all directions. The materials were simulated using measured parameters of chrome with four different levels of roughness...
March 1, 2018: Journal of Vision
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