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https://www.readbyqxmd.com/read/28062899/bibi-ergo-sum-the-effects-of-a-placebo-and-contextual-alcohol-cues-on-motivation-to-drink-alcohol
#1
Paul Christiansen, Gareth Townsend, Graeme Knibb, Matt Field
RATIONALE: Acute 'priming' doses of alcohol reliably increase alcohol-seeking behaviour in social drinkers. However, the effects of the anticipated (rather than pharmacological) effects of alcohol, and their interaction with contextual alcohol cues, are not well understood. OBJECTIVES: This study aims to determine the extent to which an alcohol-placebo drink increases craving, subjective intoxication and beer consumption, while conjointly investigating the impact of contextual alcohol cues...
January 7, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28061420/a-bioinspired-ionic-liquid-tagged-cobalt-salophen-complex-for-nonenzymatic-detection-of-glucose
#2
Michael Benjamin, Devaraj Manoj, Kathavarayan Thenmozhi, Pundlik Rambhau Bhagat, Duraisamy Saravanakumar, Sellappan Senthilkumar
The development of efficient and cost effective nonenzymatic biosensors with remarkable sensitivity, selectivity and stability for the detection of biomolecules, especially glucose is one of the major challenges in materials- and electrochemistry. Herein, we report the design and preparation of nonenzymatic biosensor based on an ionic liquid tagged cobalt-salophen metal complex (Co-salophen-IL) immobilized on electrochemically reduced graphene oxide (ERGO) for the detection of glucose via an electrochemical oxidation...
December 30, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28056439/fe3o4-nanoparticles-on-graphene-oxide-sheets-for-isolation-and-ultrasensitive-amperometric-detection-of-cancer-biomarker-proteins
#3
Mohamed Sharafeldin, Gregory W Bishop, Snehasis Bhakta, Abdelhamid El-Sawy, Steven L Suib, James F Rusling
Ultrasensitive mediator-free electrochemical detection for biomarker proteins was achieved at low cost using a novel composite of Fe3O4 nanoparticles loaded onto graphene oxide (GO) nano-sheets (Fe3O4@GO). This paramagnetic Fe3O4@GO composite (1µm size range) was decorated with antibodies against prostate specific antigen (PSA) and prostate specific membrane antigen (PSMA), and then used to first capture these biomarkers and then deliver them to an 8-sensor detection chamber of a microfluidic immunoarray. Screen-printed carbon sensors coated with electrochemically reduced graphene oxide (ERGO) and a second set of antibodies selectively capture the biomarker-laden Fe3O4@GO particles, which subsequently catalyze hydrogen peroxide reduction to detect PSA and PSMA...
December 27, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28047769/su-g-tep2-12-irochouston-and-mdapl-srs-anthropomorphic-phantom-results
#4
A Molineu, S Kry, P Alvarez, N Hernandez, T Nguyen, D Followill
PURPOSE: To report the results of SRS phantom irradiations METHODS: Anthropomorphic SRS head phantoms were sent to institutions participating in NCI sponsored SRS clinical trials and institutions interested in verifying SRS treatment delivery. The phantom shell was purchased from Phantom Laboratory and altered to house dosimetry and imaging inserts. The imaging insert has 1.9 cm diameter spherical target. The dosimetry insert holds two TLD capsules and radiochromic film in the coronal and sagittal planes through the center of the target...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046447/su-f-t-612-investigation-of-acoustic-neuroma-planning-for-stereotactic-radiosurgery-utilizing-linac-based-cone-collimators
#5
C Yeboah, M Ruschin, Y Lee, A Sarfehnia, B Chugh, S Myrehaug, M Tsao, H Soliman, A Sahgal
PURPOSE: To assess the feasibility of designing clinically-acceptable stereotactic radiosurgery (SRS) plans utilizing linac-based cone collimators for patients presenting with acoustic neuroma. METHODS: Five acoustic neuroma patients with gross tumour volumes (GTVs) of sizes from 1.3 to 2.7 cc were studied. The cranial-caudal extent of the GTVs range from 1.1 to 1.7 cm whereas the largest cross-sectional extent of the lesions varied from 2.0 to 2.4 cm. No PTV margin was added...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28030766/boosted-sensor-performance-by-surface-modification-of-bifunctional-rht-type-metal-organic-framework-with-nanosized-electrochemically-reduced-graphene-oxide
#6
Cong Li, Tingting Zhang, Jingyu Zhao, He Liu, Bo Zheng, Yue Gu, Xiaoyi Yan, Yaru Li, Nannan Lu, Zhiquan Zhang, Guodong Feng
The surface and interface could be designed to enhance properties of electrocatalysts, and they are regarded as the key characteristics. This report describes surface modification of a bifunctional rht-type metal-organic framework (MOF, Cu-TDPAT) with nanosized electrochemically reduced graphene oxide (n-ERGO). The hybrid strategy results in a Cu-TDPAT-n-ERGO sensor with sensitive and selective response toward hydrogen peroxide (H2O2). Compared with Cu-TDPAT, Cu-TDPAT-n-ERGO exhibits significantly enhanced electrocatalytic activities, highlighting the importance of n-ERGO in boosting their electrocatalytic activity...
January 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28024640/graphene-oxide-directed-in-situ-synthesis-of-prussian-blue-for-non-enzymatic-sensing-of-hydrogen-peroxide-released-from-macrophages
#7
Weiwei Qiu, Qionghua Zhu, Fei Gao, Feng Gao, Jiafu Huang, Yutian Pan, Qingxiang Wang
A novel electrochemical non-enzymatic hydrogen peroxide (H2O2) sensor has been developed based on Prussian blue (PB) and electrochemically reduced graphene oxide (ERGO). The GO was covalently modified on glassy carbon electrode (GCE), and utilized as a directing platform for in-situ synthesis of electroactive PB. Then the GO was electrochemically treated to reduction form to improve the effective surface area and electroactivity of the sensing interface. The fabrication process was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and atomic force microscopy (AFM)...
March 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27967279/accuracy-of-jump-mat-systems-for-measuring-jump-height
#8
Basilio Pueo, Patrycja Lipinska, José M Jiménez-Olmedo, Piotr Zmijewski, Will G Hopkins
PURPOSE: Vertical-jump tests are commonly used to evaluate lower-limb power of athletes and non-athletes. Several types of equipment are available for this purpose. Here we compared the error of measurement of two jump-mat systems (Chronojump-Boscosystem and Globus Ergo Tester) with that of a motion-capture system as a criterion. Additionally we determined the modifying effect of foot length on jump height. METHODS: Thirty-one young adult males alternated four countermovement jumps with four squat jumps...
December 14, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27919189/a-review-on-interleukins-the-key-manipulators-in-rheumatoid-arthritis
#9
Jatin Sharma, Sutonuka Bhar, Subathra Devi C
Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease associated with weakening of bones and joint pain. It primarily involves autoimmunity, matrix destruction, osteoclastogenesis, inflammation, and angiogenesis. Numerous cellular and humoral components of the immune system are involved in the etiology of diseases, however, the cardinal part is played by the inter-cellular signaling messengers called cytokines. Interleukins is a vaguely defined sub-class of cytokines that are abundantly found in the RA patients...
December 6, 2016: Modern Rheumatology
https://www.readbyqxmd.com/read/27910787/nonvolatile-taste-components-and-antioxidant-properties-of-fruiting-body-and-mycelium-with-high-ergothioneine-content-from-the-culinary-medicinal-golden-oyster-mushroom-pleurotus-citrinopileatus-agaricomycetes
#10
Shin-Yi Lin, Shih-Chang Chien, Sheng-Yang Wang, Jeng-Leun Mau
Pleurotus citrinopileatus mycelium was prepared with high ergothioneine (Hi-Ergo) content and its proximate composition, nonvolatile taste components, and antioxidant properties were studied. The ergothioneine contents of fruiting bodies and Hi-Ergo and regular mycelia were 3.89, 14.57, and 0.37 mg/g dry weight, respectively. Hi-Ergo mycelium contained more dietary fiber, soluble polysaccharides, and ash but less carbohydrates, reducing sugar, fiber, and fat than regular mycelium. However, Hi-Ergo mycelium contained the smallest amounts of total sugars and polyols (47...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/27783507/parameterless-stopping-criteria-for-recursive-density-matrix-expansions
#11
Anastasia Kruchinina, Elias Rudberg, Emanuel H Rubensson
Parameterless stopping criteria for recursive polynomial expansions to construct the density matrix in electronic structure calculations are proposed. Based on convergence-order estimation the new stopping criteria automatically and accurately detect when the calculation is dominated by numerical errors and continued iteration does not improve the result. Difficulties in selecting a stopping tolerance and appropriately balancing it in relation to parameters controlling the numerical accuracy are avoided. Thus, our parameterless stopping criteria stand in contrast to the standard approach to stop as soon as some error measure goes below a user-defined parameter or tolerance...
December 13, 2016: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/27782678/photoinduced-intermolecular-dynamics-and-subsequent-fragmentation-in-vuv-ionized-acetamide-clusters
#12
Marta Tarkanovskaja, Kuno Kooser, Helena Levola, Ergo Nõmmiste, Edwin Kukk
Photofragmentation of small gas-phase acetamide clusters (CH3CONH2)n (n ≤ 10) produced by a supersonic expansion source has been studied using time-of-flight ion mass spectroscopy combined with tunable vacuum-ultraviolet (VUV) synchrotron radiation. Fragmentation channels of acetamide clusters under VUV photoionization resulting in protonated and ammoniated clusters formation were identified with the discussion about the preceding intramolecular rearrangements. Acetamide-2,2,2-d3 clusters were also studied in an experiment with a gas discharge lamp as a VUV light source; comparison with the main experiment gave insights into the mechanism of formation of protonated acetamide clusters, indicating that proton transfer from amino group plays a dominant role in that process...
September 28, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27770887/electrodeposited-reduced-graphene-oxide-incorporating-polymerization-of-l-lysine-on-electrode-surface-and-its-application-in-simultaneous-electrochemical-determination-of-ascorbic-acid-dopamine-and-uric-acid
#13
Dongdong Zhang, Lingzhi Li, Weina Ma, Xia Chen, Yanmin Zhang
This paper demonstrates a novel strategy for the construction of a graphene hybrid composites film, which was fabricated by electrodeposited reduced graphene oxide (ERGO) incorporating polymerization of l-lysine (PLL) onto glassy carbon electrode (GCE). Here we show that graphene films can be prepared on electrodes directly from GO dispersions by one-step electrodeposition technique based on electropolymerized PLL as a positively charged polymer interface to adsorb negatively charged GO nanosheets through electrostatic attraction...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27769474/determination-of-8-hydroxydeoxyguanosine-a-potential-biomarker-of-oxidative-stress-using-carbon-allotropic-nanomaterials-modified-glassy-carbon-sensor
#14
Rosy, Rajendra N Goyal
A voltammetric sensor for the determination of 8-Hydroxydeoxyguanosine (8-OHdG); an important, sensitive and integral biomarker of oxidative stress and related pathological conditions like carcinogenesis, renal disorders, mental retardations, diabetes etc. has been fabricated. The synergistic behavior of two allotropic forms of carbon, which are electrochemically reduced graphene oxide (ErGO) and multiwalled carbon nanotubes (MWCNTs), has been exploited for the surface modification. The resulting modified surface has been characterized using Field Emission Scanning Electron Microscopy, X-ray diffraction, Electrochemical Impedance Spectroscopy and voltammetric behavior...
December 1, 2016: Talanta
https://www.readbyqxmd.com/read/27665671/an-exploratory-study-of-barriers-to-inclusion-in-the-european-workplace
#15
Louise Moody, Janet Saunders, Marjan Leber, Marzena Wójcik-Augustyniak, Marek Szajczyk, Nataša Rebernik
BACKGROUND: The European Disability Strategy (2010-2020) seeks to significantly raise the proportion of people with disabilities working in the open labour market. The ERGO WORK project is a collaboration of academic and industrial partners in six European countries, focused on understanding and tackling barriers to workplace inclusion for workers with disabilities. METHODS: This study sought to explore the perceptions and needs of stakeholders in terms of workplace adaptation to the needs of employees with disabilities...
September 24, 2016: Disability and Rehabilitation
https://www.readbyqxmd.com/read/27613686/human-associated-bacteroides-spp-and-human-polyomaviruses-as-microbial-source-tracking-markers-in-hawaii
#16
Marek Kirs, Roberto A Caffaro-Filho, Mayee Wong, Valerie J Harwood, Philip Moravcik, Roger S Fujioka
: Identification of sources of fecal contaminants is needed to (i) determine the health risk associated with recreational water use and (ii) implement appropriate management practices to mitigate this risk and protect the environment. This study evaluated human-associated Bacteroides spp. (HF183TaqMan) and human polyomavirus (HPyV) markers for host sensitivity and specificity using human and animal fecal samples collected in Hawaii. The decay rates of those markers and indicator bacteria were identified in marine and freshwater microcosms exposed and not exposed to sunlight, followed by field testing of the usability of the molecular markers...
November 15, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27612728/a-reagentless-non-enzymatic-hydrogen-peroxide-sensor-presented-using-electrochemically-reduced-graphene-oxide-modified-glassy-carbon-electrode
#17
Sankararao Mutyala, Jayaraman Mathiyarasu
Herein, we report a simple, facile and reproducible non-enzymatic hydrogen peroxide (H2O2) sensor using electrochemically reduced graphene oxide (ERGO) modified glassy carbon electrode (GCE). The modified electrode was characterized by Fourier transform infrared (FT-IR), UV-Visible, scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques. Cyclic voltammetric (CV) analysis revealed that ERGO/GCE exhibited virtuous charge transfer properties for a standard redox systems and showed excellent performance towards electroreduction of H2O2...
December 1, 2016: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27591667/zinc-porphyrin-fullerene-derivative-noncovalently-functionalized-graphene-hybrid-as-interfacial-material-for-electrocatalytic-application
#18
Suhua Fan, Jiao Yang, Ting Wei, Jie Zhang, Ni Zhang, Mengqing Chai, Xiaoyan Jin, Hai Wu
In this paper, a p-methoxy zinc porphyrin-fullerene derivative (ZnPp-C60) noncovalently functionalized electrochemically reduced graphene oxide (ERGO) hybrid (ERGO@ZnPp-C60) was facilely obtained by π-π stacking interaction between zinc porphyrin ring and ERGO. The hybrid was characterized by scanning electron microscope (SEM), electrochemistry, UV-vis spectra, and density functional theory (DFT), which demonstrated that the presence of ERGO caused more redox reversibility and higher electrocatalytic activity of ZnPp-C60...
November 1, 2016: Talanta
https://www.readbyqxmd.com/read/27591594/electrochemically-reduced-graphene-oxide-modified-screen-printed-carbon-electrodes-for-a-simple-and-highly-sensitive-electrochemical-detection-of-synthetic-colorants-in-beverages
#19
Sakda Jampasa, Weena Siangproh, Kiattisak Duangmal, Orawon Chailapakul
A simple and highly sensitive electrochemical sensor based on an electrochemically reduced graphene oxide-modified screen-printed carbon electrode (ERGO-SPCE) for the simultaneous determination of sunset yellow (SY) and tartrazine (TZ) was proposed. An ERGO film was coated onto the electrode surface using a cyclic voltammetric method and then characterized by scanning electron microscopy (SEM). In 0.1M phosphate buffer at a pH of 6, the two oxidation peaks of SY and TZ appeared separately at 0.41 and 0.70V, respectively...
November 1, 2016: Talanta
https://www.readbyqxmd.com/read/27575802/electrochemically-reduced-graphene-oxide-on-well-aligned-titanium-dioxide-nanotube-arrays-for-betavoltaic-enhancement
#20
Changsong Chen, Na Wang, Peng Zhou, Haisheng San, Kaiying Wang, Xuyuan Chen
We report a novel betavoltaic device with significant conversion efficiency by using electrochemically reduced graphene oxide (ERGO) on TiO2 nanotube arrays (TNTAs) for enhancing the absorption of beta radiation as well as the transportation of carriers. ERGO on TNTAs (G-TNTAs) were prepared by electrochemical anodization and subsequently cyclic voltammetry techniques. A 10 mCi of (63)Ni/Ni source was assembled to G-TNTAs to form the sandwich-type betavoltaic devices (Ni/(63)Ni/G-TNTAs/Ti). By I-V measurements, the optimum betavoltaic device exhibits a significant effective energy conversion efficiency of 26...
September 21, 2016: ACS Applied Materials & Interfaces
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