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https://www.readbyqxmd.com/read/27911498/solvothermally-prepared-cu2o-electrocatalysts-for-co2-reduction-with-tunable-selectivity-by-the-introduction-of-p-block-elements
#1
Gastón O Larrazábal, Antonio J Martín, Frank Krumeich, Roland Hauert, Javier Pérez-Ramírez
The electroreduction of CO2 to fuels and chemicals is an attractive strategy for valorizing CO2 emissions. In this study, we show that a Cu2O electrocatalyst prepared by a simple and potentially scalable solvothermal route effectively targeted CO evolution at low to moderate overpotentials (CECO ca. 60% after 12 h at -0.6 V vs. RHE), and that the introduction of p-block elements (In, Sn, Ga, Al) into the catalyst can be employed to tune its selectivity. SEM, HRTEM, and voltammetric analyses revealed that the Cu2O catalyst undergoes extensive surface restructuring (favorable for CO evolution) under reaction conditions...
December 2, 2016: ChemSusChem
https://www.readbyqxmd.com/read/27911494/determining-functional-aptamer-protein-interaction-by-biolayer-interferometry
#2
Xinhui Lou, Martin Egli, Xianbin Yang
Short single-stranded nucleic acids called aptamers are widely being explored as recognition molecules of high affinity and specificity for binding a wide range of target molecules, particularly protein targets. In biolayer interferometry (BLI), a simple Dip-and-Read approach in which the aptamer-coated biosensors are dipped into microplate wells is used to study the interactions between an aptamer and its target protein. Here we describe the protocol for the analysis of the interaction between a well-characterized anti-thrombin RNA aptamer with thrombin (Basic Protocol)...
December 1, 2016: Current Protocols in Nucleic Acid Chemistry
https://www.readbyqxmd.com/read/27911249/international-multicenter-cohort-study-of-pediatric-brain-arteriovenous-malformations-part-2-outcomes-after-stereotactic-radiosurgery
#3
Robert M Starke, Dale Ding, Hideyuki Kano, David Mathieu, Paul P Huang, Caleb Feliciano, Rafael Rodriguez-Mercado, Luis Almodovar, Inga S Grills, Danilo Silva, Mahmoud Abbassy, Symeon Missios, Douglas Kondziolka, Gene H Barnett, L Dade Lunsford, Jason P Sheehan
OBJECTIVE Pediatric patients (age < 18 years) harboring brain arteriovenous malformations (AVMs) are burdened with a considerably higher cumulative lifetime risk of hemorrhage than adults. Additionally, the pediatric population was excluded from recent prospective comparisons of intervention versus conservative management for unruptured AVMs. The aims of this multicenter, retrospective cohort study are to analyze the outcomes after stereotactic radiosurgery for unruptured and ruptured pediatric AVMs. METHODS We analyzed and pooled AVM radiosurgery data from 7 participating in the International Gamma Knife Research Foundation...
December 2, 2016: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27911152/non-tuberculous-mycobacterial-bloodstream-infections-in-patients-with-indwelling-vascular-catheters-the-role-of-sickle-cell-anaemia
#4
Babatunde Edun, Ansal Shah, Martin Durkin, Melanie Whitmire, Shanetta Patterson Williams, Helmut Albrecht, Majdi Al-Hasan, Sharon Weissman
INTRODUCTION: Few studies have examined risk factors for nontuberculous mycobacteria (NTM) bloodstream infections (BSI) involving indwelling vascular catheters (IDVC). Sickle cell anaemia (HbSS/SC) is known to affect several aspects of the immune system leading to relative immune deficiency. The purpose of this retrospective nested case-control study was to determine if HbSS/SC is a risk factor for NTM BSI among individuals with IDVCs. METHODS: All NTM IDVC infections (cases) at two tertiary hospitals from 2008 to 2014 were reviewed...
December 2, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27911103/tools-for-outcome-prediction-in-patients-with-community-acquired-pneumonia
#5
Faheem Khan, Mark B Owens, Marcos Restrepo, Pedro Povoa, Ignacio Martin-Loeches
Community-acquired pneumonia (CAP) is one of the most common causes of mortality world-wide. The mortality rate of patients with CAP is influenced by the severity of the disease, treatment failure and the requirement for hospitalization and/or intensive care unit (ICU) management, all of which may be predicted by biomarkers and clinical scoring systems. Areas Covered: We review the recent literature examining the efficacy of established and newly-developed clinical scores, biological and inflammatory markers such as C-Reactive protein (CRP), procalcitonin (PCT) and Interleukin-6 (IL-6), whether used alone or in conjunction with clinical severity scores to assess the severity of CAP, predict treatment failure, guide acute in-hospital or ICU admission and predict mortality...
December 2, 2016: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/27911050/tuning-the-reactivity-of-graphene-by-surface-phase-orientation
#6
Jan Plsek, Petr Kovaricek, Vaclav Vales, Martin Kalbac
Tuning the local reactivity of graphene is a subject of paramount importance. Among the available strategies, the activation/passivation of graphene by copper substrate is very promising, because it enables to influence the properties of graphene without any transfer procedure as graphene can be grown directly on copper. Here, we demonstrate that the reactivity of graphene towards fluorination is strongly influenced by the face of the surface of the copper substrate. We probed graphene on the copper foil with identified grain orientations...
December 2, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27911043/a-cyclic-alkyl-amino-carbene-as-two-atom-%C3%AF-chromophore-leading-to-the-first-phosphorescent-linear-cu-i-complexes
#7
Markus Gernert, Ulrich Müller, Martin Haehnel, Jens Pflaum, Andreas Steffen
A series of linear and trigonal copper(I) complexes bearing a cyclic alkyl(amino)carbene (CAAC) ligand show surprising photophysical properties when compared to their corresponding N-heterocyclic carbene (NHC) complexes. Whereas the linear NHC complexes [CuX(NHC)] are nearly non-emissive, [CuX(CAAC)] (X = Cl, Br, I) and [Cu(CAAC)2]PF6 show very bright emission from their triplet excited states in the blue to green region displaying quantum yields of up to 65% in the solid state, although the π-acceptor comprises only the carbene C and N atoms with no other π conjugation...
December 2, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27911013/the-cost-of-care-homes-for-people-with-dementia-in-england-a-modelling-approach
#8
Renee Romeo, Martin Knapp, Suzanne Salverda, Martin Orrell, Jane Fossey, Clive Ballard
OBJECTIVES: To examine the cost of care for people with dementia in institutional care settings, to understand the major cost drivers and to highlight opportunities for service development. METHODS: Data on 277 residents with dementia in 16 UK residential or nursing homes were collected. We estimated care and support costs and fitted models to the data. Sensitivity analyses were also conducted. RESULTS: Care home residents cost £792 weekly: 95% of the costs accounted for by direct fees...
December 2, 2016: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/27911002/what-is-quality-of-life-and-how-do-we-measure-it-relevance-to-parkinson-s-disease-and-movement-disorders
#9
REVIEW
Pablo Martinez-Martin
Health-related quality of life is a patient-reported outcome that complements clinical evaluation and provides information about disease activity and effects of the treatment. The objective of this review is to present the conceptual framework, the measures, and some of their most relevant applications in the field of Parkinson's disease and movement disorders. Health-related quality of life is a subjective, individual, and multidimensional construct, and its main dimensions are physical, mental, and social, besides global perceptions of health and personal domains...
December 2, 2016: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/27910998/aurora-a-shines-on-t-cell-activation-through-the-regulation-of-lck
#10
Noelia Blas-Rus, Eugenio Bustos-Morán, Noa B Martín-Cófreces, Francisco Sánchez-Madrid
Different protein kinases control signaling emanating from the T cell receptor (TCR) during antigen-specific T cell activation. Mitotic kinases, e.g. Aurora-A, have been widely studied in the context of mitosis due to their role during microtubule (MT) nucleation, becoming critical regulators of cell cycle progression. We have recently described a specific role for Aurora-A kinase in antigenic T cell activation. Blockade of Aurora-A in T cells severely disrupts the dynamics of MTs and CD3ζ-bearing signaling vesicles during T cell activation...
December 2, 2016: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/27910939/real-time-pcr-based-serotyping-of-streptococcus-agalactiae
#11
Kathleen M Breeding, Bhavana Ragipani, Kun-Uk David Lee, Martin Malik, Tara M Randis, Adam J Ratner
Group B Streptococcus (GBS) is an encapsulated, gram-positive pathogen that is an important cause of neonatal invasive infections, including sepsis and meningitis. There are ten known GBS serotypes based on distinct capsule compositions (Ia, Ib, II-IX), and current candidate capsular polysaccharide conjugate vaccines target only a subset of these. Serotyping of GBS isolates is important for understanding local epidemiology and for monitoring for serotype replacement or capsular switching. However, serotyping generally requires either latex agglutination, multiplex PCR with analysis of band sizes, or analysis of whole genome sequences-all techniques that are either expensive or not widely available...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910924/high-yield-fabrication-and-properties-of-1-4%C3%A2-nm-nanodiamonds-with-narrow-size-distribution
#12
Stepan Stehlik, Marian Varga, Martin Ledinsky, Daria Miliaieva, Halyna Kozak, Viera Skakalova, Clemens Mangler, Timothy J Pennycook, Jannik C Meyer, Alexander Kromka, Bohuslav Rezek
Detonation nanodiamonds (DNDs) with a typical size of 5 nm have attracted broad interest in science and technology. Further size reduction of DNDs would bring these nanoparticles to the molecular-size level and open new prospects for research and applications in various fields, ranging from quantum physics to biomedicine. Here we show a controllable size reduction of the DND mean size down to 1.4 nm without significant particle loss and with additional disintegration of DND core agglutinates by air annealing, leading to a significantly narrowed size distribution (±0...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910757/free-radical-scavenging-activities-of-cultured-mycelia-of-paecilomyces-hepiali-ascomycetes-extracts-and-structural-characterization-of-bioactive-components-by-nuclear-magnetic-resonance-spectroscopy
#13
Lucia Ungvarska Mal'ucka, Jarmila Harvanova, Martin Pavlik, Martin Rajtar, Lukas Jarosciak
Current research is focused on testing the cultivation of Paecilomyces hepiali mycelia on various plant substrates and producing fungus or mycelial biomass with qualitatively interesting substances. P. hepiali mycelia was cultivated using solid-state fermentation of different substrates. Mycelial biomass was then analyzed, and antioxidant activity was evaluated using the DPPH radical scavenging method for different ethanolic extracts based on a millet substrate (extract 1) or a chickpea substrate (extract 2)...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/27910738/cartilage-repair-in-the-degenerative-ageing-knee
#14
Mats Brittberg, Andreas H Gomoll, José A Canseco, Jack Far, Martin Lind, James Hui
Background and purpose - Cartilage damage can develop due to trauma, resulting in focal chondral or osteochondral defects, or as more diffuse loss of cartilage in a generalized organ disease such as osteoarthritis. A loss of cartilage function and quality is also seen with increasing age. There is a spectrum of diseases ranging from focal cartilage defects with healthy surrounding cartilage to focal lesions in degenerative cartilage, to multiple and diffuse lesions in osteoarthritic cartilage. At the recent Aarhus Regenerative Orthopaedics Symposium (AROS) 2015, regenerative challenges in an ageing population were discussed by clinicians and basic scientists...
December 2, 2016: Acta Orthopaedica
https://www.readbyqxmd.com/read/27910675/erratum-a-fast-real-time-measurement-system-to-track-in-and-out-of-plane-optical-retardation-birefringence-true-stress-and-true-strain-during-biaxial-stretching-of-polymer-films-rev-sci-instrum-83-123901-2012
#15
https://www.readbyqxmd.com/read/27910655/a-fast-feedback-controlled-magnetic-drive-for-the-asdex-upgrade-fast-ion-loss-detectors
#16
J Ayllon-Guerola, J Gonzalez-Martin, M Garcia-Munoz, J Rivero-Rodriguez, A Herrmann, S Vorbrugg, P Leitenstern, S Zoletnik, J Galdon, J Garcia Lopez, M Rodriguez-Ramos, L Sanchis-Sanchez, A D Dominguez, M Kocan, J P Gunn, D Garcia-Vallejo, J Dominguez
A magnetically driven fast-ion loss detector system for the ASDEX Upgrade tokamak has been designed and will be presented here. The device is feedback controlled to adapt the detector head position to the heat load and physics requirements. Dynamic simulations have been performed taking into account effects such as friction, coil self-induction, and eddy currents. A real time positioning control algorithm to maximize the detector operational window has been developed. This algorithm considers dynamical behavior and mechanical resistance as well as measured and predicted thermal loads...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910510/small-optic-suspensions-for-advanced-ligo-input-optics-and-other-precision-optical-experiments
#17
G Ciani, M A Arain, S M Aston, D Feldbaum, P Fulda, J Gleason, M Heintze, R M Martin, C L Mueller, D M Nanda Kumar, A Pele, D H Reitze, P Sainathan, D B Tanner, L F Williams, G Mueller
We report on the design and performance of small optic suspensions developed to suppress seismic motion of out-of-cavity optics in the input optics subsystem of the Advanced Laser Interferometer Gravitational Wave Observatory. These compact single stage suspensions provide isolation in all six degrees of freedom of the optic, local sensing and actuation in three of them, and passive damping for the other three.
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910499/conceptual-design-of-the-iter-fast-ion-loss-detector
#18
M Garcia-Munoz, M Kocan, J Ayllon-Guerola, L Bertalot, Y Bonnet, N Casal, J Galdon, J Garcia Lopez, T Giacomin, J Gonzalez-Martin, J P Gunn, M C Jimenez-Ramos, V Kiptily, S D Pinches, M Rodriguez-Ramos, R Reichle, J F Rivero-Rodriguez, L Sanchis-Sanchez, A Snicker, G Vayakis, E Veshchev, Ch Vorpahl, M Walsh, R Walton
A conceptual design of a reciprocating fast-ion loss detector for ITER has been developed and is presented here. Fast-ion orbit simulations in a 3D magnetic equilibrium and up-to-date first wall have been carried out to revise the measurement requirements for the lost alpha monitor in ITER. In agreement with recent observations, the simulations presented here suggest that a pitch-angle resolution of ∼5° might be necessary to identify the loss mechanisms. Synthetic measurements including realistic lost alpha-particle as well as neutron and gamma fluxes predict scintillator signal-to-noise levels measurable with standard light acquisition systems with the detector aperture at ∼11 cm outside of the diagnostic first wall...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910462/a-precision-cryostat-design-for-manual-and-semi-automated-cryo-plunge-instruments
#19
Christopher J Russo, Steve Scotcher, Martin Kyte
Here we describe a bench-top cryostat system to control the temperature of liquid ethane in a cryo-plunge apparatus designed for biological specimen preparation for electron cryomicroscopy. It comprises a foam insulated Dewar containing a copper cryostat cup, whose temperature is controlled via an active feedback system to within 0.1 K. The device can easily be incorporated into existing manual and semi-automatic cryo-plunge instruments that are not equipped with cryogenic temperature control. Over the course of normal use, we find that using a cryostat is convenient, fast, and does not require special mixtures of cryogens like ethane/propane...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910427/a-temporally-and-spatially-resolved-electron-density-diagnostic-method-for-the-edge-plasma-based-on-stark-broadening
#20
A Zafar, E H Martin, S C Shannon, R C Isler, J B O Caughman
An electron density diagnostic (≥10(10) cm(-3)) capable of high temporal (ms) and spatial (mm) resolution is currently under development at Oak Ridge National Laboratory. The diagnostic is based on measuring the Stark broadened, Doppler-free spectral line profile of the n = 6-2 hydrogen Balmer series transition. The profile is then fit to a fully quantum mechanical model including the appropriate electric and magnetic field operators. The quasi-static approach used to calculate the Doppler-free spectral line profile is outlined here and the results from the model are presented for H-δ spectra for electron densities of 10(10)-10(13) cm(-3)...
November 2016: Review of Scientific Instruments
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