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https://www.readbyqxmd.com/read/29168378/molar-range-detection-based-on-sideband-differential-absorption-spectroscopy-with-a-concentrated-reference
#1
Liu-Chuang Zhao, Mei-Hong Guo, Xiao-Dong Li, Yu-Ping Huang, Shao-Hua Wu, Jian-Jun Sun
Conventional absorption spectroscopy (CAS) with a blank reference has only a slight capacity to detect high concentrations at characteristic wavelengths owing to the corresponding large molar absorption coefficient (ε) on the scale of 10(3) or 10(4) cm(-1) M(-1). To monitor concentrated analytes as high as the molar range in a plating bath and on a chemical production line, we propose a new approach using sideband differential absorption spectroscopy (SDAS). SDAS is obtained by subtracting the absorption spectra of the samples A (λ, Cx) from that of a reference containing a concentrated standard analyte A (λ, Cref > Cx), resulting in concave spectra with peaks at the sideband of conventional spectra with generally low ε values on the scale of 100 cm(-1) M(-1) or less...
November 23, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29168179/phenolic-and-physicochemical-stability-of-a-functional-beverage-powder-mixture-during-storage-effect-of-the-microencapsulant-inulin-and-food-ingredients
#2
Dalene de Beer, Claire E Pauck, Marique Aucamp, Wilna Liebenberg, Nicole Stieger, Marieta van der Rijst, Elizabeth Joubert
BACKGROUND: The need for a convenience herbal iced tea product with reduced kilojoules merited investigation of the shelf-life of powder mixtures containing a green Cyclopia subternata Vogel (honeybush) extract with proven blood glucose-lowering activity and alternative sweetener mixture. RESULTS: Prior to long-term storage testing, the wettability of powder mixtures containing food ingredients and the compatibility of their components were confirmed using the static sessile drop method and isothermal microcalorimetry, respectively...
November 23, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29167275/residual-convolutional-neural-network-for-determination-of-idh-status-in-low-and-high-grade-gliomas-from-mr-imaging
#3
Ken Chang, Harrison X Bai, Hao Zhou, Chang Su, Wenya Linda Bi, Ena Agbodza, Vasileios K Kavouridis, Joeky T Senders, Alessandro Boaro, Andrew L Beers, Biqi Zhang, Alexandra Capellini, Weihua Liao, Qin Shen, Xuejun Li, Bo Xiao, Jane Cryan, Shakti Ramkissoon, Lori Ramkissoon, Keith L Ligon, Patrick Y Wen, Ranjit S Bindra, John H Woo, Omar Arnaout, Elizabeth Gerstner, Paul J Zhang, Bruce Rosen, Li Yang, Raymond Y Huang, Jayashree Kalpathy-Cramer
PURPOSE: Isocitrate dehydrogenase (<IDH) mutations in glioma patients confer longer survival and may guide treatment decision-making. We aimed to predict the IDH status of gliomas from MR imaging by applying a residual convolutional neural network to pre-operative radiographic data. EXPERIMENTAL DESIGN: Preoperative imaging was acquired for 201 patients from the Hospital of University of Pennsylvania (HUP), 157 patients from Brigham and Women's Hospital (BWH), and 138 patients from The Cancer Imaging Archive (TCIA) and divided into training, validation, and testing sets...
November 22, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29165500/uv-vis-spectrophotometry-of-quinone-flow-battery-electrolyte-for-in-situ-monitoring-and-improved-electrochemical-modeling-of-potential-and-quinhydrone-formation
#4
Liuchuan Tong, Qing Chen, Andrew A Wong, Rafael Gómez-Bombarelli, Alán Aspuru-Guzik, Roy G Gordon, Michael J Aziz
Quinone-based aqueous flow batteries provide a potential opportunity for large-scale, low-cost energy storage due to their composition from earth abundant elements, high aqueous solubility, reversible redox kinetics and their chemical tunability such as reduction potential. In an operating flow battery utilizing 9,10-anthraquinone-2,7-disulfonic acid, the aggregation of an oxidized quinone and a reduced hydroquinone to form a quinhydrone dimer causes significant variations from ideal solution behavior and of optical absorption from the Beer-Lambert law...
November 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29163859/virtual-agent-mediated-appraisal-training-a-single-case-series-among-dutch-firefighters
#5
Ursula M Beer, Mark A Neerincx, Nexhmedin Morina, Willem-Paul Brinkman
Background: First responders are a prime example of professionals that are at a high risk of being exposed to traumatic experiences. Reappraisal as a coping strategy might help first responders to better cope with their emotional responses to traumatic events. Objective: This study investigated the effects of repeated sessions of a digital reappraisal training among seven firefighters. The training consisted of four sessions supported by a virtual agent, conducted at home or at work, over a two-week period in a single case series...
2017: European Journal of Psychotraumatology
https://www.readbyqxmd.com/read/29163332/clinical-use-of-cerebral-microdialysis-in-patients-with-aneurysmal-subarachnoid-hemorrhage-state-of-the-art
#6
REVIEW
Raimund Helbok, Mario Kofler, Alois Josef Schiefecker, Maxime Gaasch, Verena Rass, Bettina Pfausler, Ronny Beer, Erich Schmutzhard
Objective: To review the published literature on the clinical application of cerebral microdialysis (CMD) in aneurysmal subarachnoid hemorrhage (SAH) patients and to summarize the evidence relating cerebral metabolism to pathophysiology, secondary brain injury, and outcome. Methods: Study selection: Two reviewers identified all manuscripts reporting on the clinical use of CMD in aneurysmal SAH patients from MEDLINE. All identified studies were grouped according to their focus on brain metabolic changes during the early and subacute phase after SAH, their association with mechanisms of secondary brain injury and outcome...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29161069/characteristics-of-hiv-positive-transgender-men-receiving-medical-care-united-states-2009-2014
#7
Ansley Lemons, Linda Beer, Teresa Finlayson, Donna Hubbard McCree, Daniel Lentine, R Luke Shouse
OBJECTIVES: To present the first national estimate of the sociodemographic, clinical, and behavioral characteristics of HIV-positive transgender men receiving medical care in the United States. METHODS: This analysis included pooled interview and medical record data from the 2009 to 2014 cycles of the Medical Monitoring Project, which used a 3-stage, probability-proportional-to-size sampling methodology. RESULTS: Transgender men accounted for 0...
November 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/29160960/risk-of-past-year-injury-related-to-hours-of-exposure-to-an-elevated-bac-and-average-monthly-alcohol-volume-data-from-four-national-alcohol-surveys-2000-2015
#8
Cheryl J Cherpitel, Yu Ye, William C Kerr
BACKGROUND: While a strong association exists between alcohol and injury in emergency department (ED) studies, these studies are not representative of the general population. OBJECTIVE: The association of injury with the number of hours of exposure to a BAC ≥ 0.05 and average monthly volume in drinks, both based on self-report of quantity and frequency of drinking in the last year, in a merged sample of respondents (n=29,571) from four U.S. National Alcohol Surveys (2000-2015) is analyzed...
November 21, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29160839/inkjet-printing-of-drug-loaded-mesoporous-silica-nanoparticles-a-platform-for-drug-development
#9
Henrika Wickström, Ellen Hilgert, Johan O Nyman, Diti Desai, Didem Şen Karaman, Thomas de Beer, Niklas Sandler, Jessica M Rosenholm
Mesoporous silica nanoparticles (MSNs) have shown great potential in improving drug delivery of poorly water soluble (BCS class II, IV) and poorly permeable (BCS class III, IV) drugs, as well as facilitating successful delivery of unstable compounds. The nanoparticle technology would allow improved treatment by reducing adverse reactions of currently approved drugs and possibly reintroducing previously discarded compounds from the drug development pipeline. This study aims to highlight important aspects in mesoporous silica nanoparticle (MSN) ink formulation development for digital inkjet printing technology and to advice on choosing a method (2D/3D) for nanoparticle print deposit characterization...
November 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29160742/university-affiliated-alcohol-marketing-enhances-the-incentive-salience-of-alcohol-cues
#10
Bruce D Bartholow, Chris Loersch, Tiffany A Ito, Meredith P Levsen, Hannah I Volpert-Esmond, Kimberly A Fleming, Paul Bolls, Brooke K Carter
We tested whether affiliating beer brands with universities enhances the incentive salience of those brands for underage drinkers. In Study 1, 128 undergraduates viewed beer cues while event-related potentials (ERPs) were recorded. Results showed that beer cues paired with in-group backgrounds (logos for students' universities) evoked an enhanced P3 ERP component, a neural index of incentive salience. This effect varied according to students' levels of identification with their university, and the amplitude of the P3 response prospectively predicted alcohol use over 1 month...
November 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/29159557/correction-to-potentiometric-determination-of-fluoride-concentration-in-beers
#11
Inmaculada Gutiérrez, Juan Ramón Jaudenes, Arturo Hardisson, Soraya Paz, Carmen Rubio, Angel José Gutiérrez, Antonio Burgos, Consuelo Revert
The original version of the article unfortunately contained a mistake. The first author Inmaculada Gutiérrez was omitted.
November 21, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/29158944/comparative-metagenomic-analysis-of-electrogenic-microbial-communities-in-differentially-inoculated-swine-wastewater-fed-microbial-fuel-cells
#12
Irina V Khilyas, Anatoly A Sorokin, Larisa Kiseleva, David J W Simpson, V Fedorovich, Margarita R Sharipova, Mami Kainuma, Michael F Cohen, Igor Goryanin
Bioelectrochemical systems such as microbial fuel cells (MFCs) are promising new technologies for efficient removal of organic compounds from industrial wastewaters, including that generated from swine farming. We inoculated two pairs of laboratory-scale MFCs with sludge granules from a beer wastewater-treating anaerobic digester (IGBS) or from sludge taken from the bottom of a tank receiving swine wastewater (SS). The SS-inoculated MFC outperformed the IGBS-inoculated MFC with regard to COD and VFA removal and electricity production...
2017: Scientifica
https://www.readbyqxmd.com/read/29158427/do-emotions-related-to-alcohol-consumption-differ-by-alcohol-type-an-international-cross-sectional-survey-of-emotions-associated-with-alcohol-consumption-and-influence-on-drink-choice-in-different-settings
#13
Kathryn Ashton, Mark A Bellis, Alisha R Davies, Karen Hughes, Adam Winstock
OBJECTIVES: To examine the emotions associated with drinking different types of alcohol, explore whether these emotions differ by sociodemographics and alcohol dependency and whether the emotions associated with different drink types influence people's choice of drinks in different settings. DESIGN: International cross-sectional opportunistic survey (Global Drug Survey) using an online anonymous questionnaire in 11 languages promoted through newspapers, magazines and social media from November 2015 to January 2016...
November 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/29157335/hyperoxia-and-hypoxic-hypoxia-effects-on-simple-and-choice-reaction-times
#14
Todd Dart, Megan Gallo, Jeremy Beer, Joseph Fischer, Thomas Morgan, Andrew Pilmanis
INTRODUCTION: Effects of exposure to hyperoxia (PiO2 > 105 mmHg), normoxia (PiO2 95-105 mmHg) and hypoxia (PiO2 < 95 mmHg) on simple and choice reaction performance tasks were evaluated. METHODS: Ten subjects performed simple and choice reaction time tests (SRT and CRT, respectively) at ground level for 40 min (20 min normoxic, 20 min hyperoxic, randomly assigned), 3048 m (10,000 ft) for 75 min (15 min hyperoxic, 60 min hypoxic), 4572 m (15,000 ft) for 60 min (15 min hyperoxic, 45 min hypoxic), and 6096 m (20,000 ft) for 35 min (15 min hyperoxic, 20 min hypoxic)...
December 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29156931/-benefits-of-the-beer-polyphenols-on-the-gut-microbiota
#15
Isabel Moreno Indias
Gut microbiota has a central role in the homeostasis of the host. Diet is one of the key factors affecting and modulating gut microbiota profile. Dietary polyphenols, which belongs to the non-digestible part of the diet, reach the colon almost unaltered. Polyphenols and gut microbiota put in contact within the colon, where gut microbiota transforms polyphenols to give their bioactivity. The moderate consumption of alcohol is associated with a lower cardiovascular risk and mortality, with the highest cardioprotective effects from the fermented beverages with a high amount of polyphenols...
October 15, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29156539/epidemiological-investigations-of-four-cowpox-virus-outbreaks-in-alpaca-herds-germany
#16
Almut Prkno, Donata Hoffmann, Daniela Goerigk, Matthias Kaiser, Anne Catherine Franscisca van Maanen, Kathrin Jeske, Maria Jenckel, Florian Pfaff, Thomas W Vahlenkamp, Martin Beer, Rainer G Ulrich, Alexander Starke, Martin Pfeffer
Four cowpox virus (CPXV) outbreaks occurred in unrelated alpaca herds in Eastern Germany during 2012-2017. All incidents were initially noticed due to severe, generalized, and finally lethal CPXV infections, which were confirmed by testing of tissue and serum samples. As CPXV-infection has been described in South American camelids (SACs) only three times, all four herds were investigated to gain a deeper understanding of CPXV epidemiology in alpacas. The different herds were investigated twice, and various samples (serum, swab samples, and crusts of suspicious pox lesions, feces) were taken to identify additionally infected animals...
November 18, 2017: Viruses
https://www.readbyqxmd.com/read/29152066/identification-and-validation-of-fgfr2-peptide-for-detection-of-early-barrett-s-neoplasia
#17
Juan Zhou, Lei He, Zhijun Pang, Henry D Appelman, Rork Kuick, David G Beer, Meng Li, Thomas D Wang
The incidence of esophageal adenocarcinoma (EAC) is rising rapidly, and early detection within the precursor state of Barrett's esophagus (BE) is challenged by flat premalignant lesions that are difficult detect with conventional endoscopic surveillance. Overexpression of cell surface fibroblast growth factor receptor 2 (FGFR2) is an early event in progression of BE to EAC, and is a promising imaging target. We used phage display to identify the peptide SRRPASFRTARE that binds specifically to the extracellular domain of FGFR2...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29148040/the-endocranial-shape-of-australopithecus-africanus-surface-analysis-of-the-endocasts-of-sts-5-and-sts-60
#18
Amélie Beaudet, Jean Dumoncel, Frikkie de Beer, Stanley Durrleman, Emmanuel Gilissen, Anna Oettlé, Gérard Subsol, John Francis Thackeray, José Braga
Assessment of global endocranial morphology and regional neuroanatomical changes in early hominins is critical for the reconstruction of evolutionary trajectories of cerebral regions in the human lineage. Early evidence of cortical reorganization in specific local areas (e.g. visual cortex, inferior frontal gyrus) is perceptible in the non-human South African hominin fossil record. However, to date, little information is available regarding potential global changes in the early hominin brain. The introduction of non-invasive imaging techniques opens up new perspectives for the study of hominin brain evolution...
November 16, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29146359/determination-of-tryptophan-derivatives-in-kynurenine-pathway-in-fermented-foods-using-liquid-chromatography-tandem-mass-spectrometry
#19
Cemile Yılmaz, Vural Gökmen
This study aimed to develop an analytical method for the determination of tryptophan and its derivatives in kynurenine pathway using tandem mass spectrometry in various fermented food products (bread, beer, red wine, white cheese, yoghurt, kefir and cocoa powder). The method entails an aqueous extraction and reversed phase chromatographic separation using pentafluorophenyl (PFP) column. It allowed quantitation of low ppb levels of tryptophan and its derivatives in different fermented food matrices. It was found that beer samples were found to contain kynurenine within the range of 28...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29145733/harnessing-novel-imaging-approaches-to-guide-hiv-prevention-and-cure-discoveries-a-national-institutes-of-health-and-global-hiv-vaccine-enterprise-2017-meeting-report
#20
Brigitte Elisabeth Sanders-Beer, Yegor Voronin, David McDonald, Anjali Singh
Advances in imaging technologies have greatly increased our understanding of cellular and molecular interactions in humans and their corresponding animal models of infectious diseases. In the HIV/SIV field, imaging has provided key insights into mucosal viral transmission, local and systemic virus spread, host-virus dynamics, and chronic inflammation/immune activation and the resultant immunopathology. Recent developments in imaging applications are yielding physical, spatial, and temporal measurements to enhance insight into biological functions and disease processes, while retaining important cellular, microenvironmental, organ and intact organism contextual details...
November 16, 2017: AIDS Research and Human Retroviruses
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