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https://www.readbyqxmd.com/read/28641011/exploiting-one-dimensional-exciton-phonon-coupling-for-tunable-and-efficient-single-photon-generation-with-a-carbon-nanotube
#1
Adrien Jeantet, Yannick Chassagneux, Théo Claude, Philippe Roussignol, Jean-Sébastien Lauret, Jakob Reichel, Christophe Voisin
Condensed-matter emitters offer enriched cavity quantum electrodynamical effects due to the coupling to external degrees of freedom. In the case of carbon nanotubes a very peculiar coupling between localized excitons and the one-dimensional acoustic phonon modes can be achieved, which gives rise to pronounced phonon wings in the luminescence spectrum. By coupling an individual nanotube to a tunable optical micro-cavity, we show that this peculiar exciton-phonon coupling is a valuable resource to enlarge the tuning range of the single-photon source while keeping an excellent exciton-photon coupling efficiency and spectral purity...
June 22, 2017: Nano Letters
https://www.readbyqxmd.com/read/28640955/in-solution-antibody-harvesting-with-a-plant-produced-hydrophobin-protein-a-fusion
#2
Katri Kurppa, Lauri Reuter, Anneli Ritala, Markus Linder, Jussi Joensuu
Purification is a bottleneck and a major cost factor in the production of antibodies. We set out to engineer a bi-functional fusion protein from two building blocks, Protein A and a hydrophobin, aiming at low-cost and scalable antibody capturing in solutions. Immunoglobulin-binding Protein A is widely used in affinity-based purification. The hydrophobin fusion tag, on the other hand, has been shown to enable purification by two-phase separation. Protein A was fused to two different hydrophobin tags, HFBI or II, and expressed transiently in Nicotiana benthamiana...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640841/a-sorghum-sorghum-bicolor-mutant-with-altered-carbon-isotope-ratio
#3
Govinda Rizal, Shanta Karki, Vivek Thakur, Samart Wanchana, Hugo Alonso-Cantabrana, Jacque Dionora, John E Sheehy, Robert Furbank, Susanne von Caemmerer, William Paul Quick
Recent efforts to engineer C4 photosynthetic traits into C3 plants such as rice demand an understanding of the genetic elements that enable C4 plants to outperform C3 plants. As a part of the C4 Rice Consortium's efforts to identify genes needed to support C4 photosynthesis, EMS mutagenized sorghum populations were generated and screened to identify genes that cause a loss of C4 function. Stable carbon isotope ratio (δ13C) of leaf dry matter has been used to distinguishspecies with C3 and C4 photosynthetic pathways...
2017: PloS One
https://www.readbyqxmd.com/read/28640822/effective-treatment-options-for-musculoskeletal-pain-in-primary-care-a-systematic-overview-of-current-evidence
#4
Opeyemi O Babatunde, Joanne L Jordan, Danielle A Van der Windt, Jonathan C Hill, Nadine E Foster, Joanne Protheroe
BACKGROUND & AIMS: Musculoskeletal pain, the most common cause of disability globally, is most frequently managed in primary care. People with musculoskeletal pain in different body regions share similar characteristics, prognosis, and may respond to similar treatments. This overview aims to summarise current best evidence on currently available treatment options for the five most common musculoskeletal pain presentations (back, neck, shoulder, knee and multi-site pain) in primary care...
2017: PloS One
https://www.readbyqxmd.com/read/28640816/topographic-independent-component-analysis-reveals-random-scrambling-of-orientation-in-visual-space
#5
Marina Martinez-Garcia, Luis M Martinez, Jesús Malo
Neurons at primary visual cortex (V1) in humans and other species are edge filters organized in orientation maps. In these maps, neurons with similar orientation preference are clustered together in iso-orientation domains. These maps have two fundamental properties: (1) retinotopy, i.e. correspondence between displacements at the image space and displacements at the cortical surface, and (2) a trade-off between good coverage of the visual field with all orientations and continuity of iso-orientation domains in the cortical space...
2017: PloS One
https://www.readbyqxmd.com/read/28640719/using-simulated-practice-in-pre-registration-education-to-explore-mental-health-issues
#6
Amanda Collins Eade, Claire Winter
UK policy advocates that all nurses should have the skills to work with individuals experiencing mental health problems. However, barriers exist in that mental health placements for child student nurses are brief or difficult to arrange. This hinders opportunities to develop a therapeutic working relationship with young people, consolidate skills and ultimately develop confidence in working with young people presenting with mental health problems. A 3-day simulated practice strategy with child nursing students was designed to give students the knowledge, skills and confidence to work with young people who present to services with mental health problems...
June 22, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28640625/dust-effects-on-nucleation-kinetics-and-nanoparticle-product-size-distributions-illustrative-case-study-of-a-prototype-ir-0-n-transition-metal-nanoparticle-formation-system
#7
Saim Özkar, Richard G Finke
The question is addressed if dust is kinetically important in the nucleation and growth of Ir(0)n nanoparticles formed from [Bu4N]5Na3(1,5-COD)Ir(I)·P2W15Nb3O62 (hereafter [(COD)Ir·POM](8-)), reduced by H2 in propylene carbonate solvent. Following a concise review of the (often-neglected) literature addressing dust in nucleation phenomena dating back to the late 1800s, the nucleation and growth kinetics of the [(COD)Ir·POM](8-) precatalyst system are examined for the effects of 0.2 μm microfiltration of the solvent and precatalyst solution, of rinsing the glassware with that microfiltered solvent, of silanizing the glass reaction vessel, for the addition of <0...
June 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28640602/dietary-n-carbamylglutamate-supplementation-in-reduced-protein-diet-affects-carcass-traits-and-profile-of-muscle-amino-acids-and-fatty-acids-in-finishing-pigs
#8
Changchuan Ye, Xiangzhou Zeng, JInlong Zhu, Ying Liu, Qianhong Ye, Shiyan Qiao, Xiangfang Zeng
This aim of this study was to investigate whether dietary N-Carbamylglutamate (NCG) supplementation affected carcass traits and meat quality in finishing pigs. One hundred and twenty gilts were randomly assigned to one of four treatments for 40 d, including standard protein diet (SP), reduced protein diet supplemented 1.7% L-alanine (RP + Ala), reduced protein diet supplemented with 1.0 % L-arginine (RP + Arg) and reduced protein diet supplemented with 0.1% NCG and 1.7% L-alanine (RP + NCG). NCG supplementation increased the endogenous synthesis of L-arginine...
June 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28637153/dutch-version-of-the-fear-of-pain-questionnaire-for-adolescents-with-chronic-pain
#9
Carolien Dekker, Caroline H G Bastiaenen, Janneke E de Vries, Laura E Simons, Mariëlle E J B Goossens, Jeanine A M C F Verbunt
BACKGROUND: Fear of pain is important in the development and maintenance of chronic pain. The Fear of Pain Questionnaire-Child version has been developed to assess pain related fear in children and adolescents. OBJECTIVE: Translating the original questionnaire into Dutch, and investigating internal consistency and construct validity to enable use in the Dutch pain rehabilitation setting for treatment and research. METHODS: Cross-sectional validation study: After forward and back translation of the FOPQ-C, adolescents (11-22 years old) with chronic musculoskeletal pain completed an assessment containing the Dutch Fear of Pain Questionnaire, and questionnaires about demographics, pain catastrophizing, functional disability, and pain intensity...
March 3, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28637130/community-integration-and-life-satisfaction-among-individuals-with-spinal-cord-injury-living-in-the-community-after-receiving-institutional-care-in-bangladesh
#10
Nayeema Ahmed, Mohammad Morshedul Quadir, Mohammad Akhlasur Rahman, Hasanat Alamgir
PURPOSE: This study reports level of community integration and life satisfaction among individuals who sustained traumatic spinal cord injuries, received institutional rehabilitation care services, and went back to live in the community in Bangladesh. It examines the impact of type of injury, demographic characteristics, socio-economic profile, and secondary health conditions on community integration and life satisfaction and explores the association between these two measures. METHOD: Individuals with spinal cord injury were telephone interviewed by the Centre for the Rehabilitation of the Paralysed, Bangladesh from February to June of 2014...
February 7, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28637036/differentiating-incident-from-recurrent-stroke-using-administrative-data-the-impact-of-varying-lengths-of-look-back-periods-on-the-risk-of-misclassification
#11
John Mark Worthington, Melina Gattellari, Chris Goumas, Bin Jalaludin
BACKGROUND/AIMS: Administrative data are widely used to monitor epidemiological trends in stroke and outcomes; yet there is scant empirical guidance on how to best differentiate incident from recurrent stroke. METHODS: We identified all hospital admissions in New South Wales, Australia, with a principal stroke diagnosis from July 1, 2013 to June 30, 2014, linked to 12 years of previous admissions. We calculated the proportion of cases identified with a prior stroke to determine the number of years of look-back required to minimise misclassification of incident and recurrent strokes...
June 22, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28637033/quantitative-swept-source-optical-coherence-tomography-of-early-enamel-erosion-in-vivo
#12
Rupert S Austin, Maisalamah Haji Taha, Frederic Festy, Richard Cook, Manoharan Andiappan, Juliana Gomez, Iain A Pretty, Rebecca Moazzez
Swept-source optical coherence tomography (SS-OCT) shows potential for the in vivo quantitative evaluation of micro-structural enamel surface phenomena occurring during early erosive demineralization. This randomized controlled single-blind cross-over clinical study aimed to evaluate the use of SS-OCT for detecting optical changes in the enamel of 30 healthy volunteers subjected to orange juice rinsing (erosive challenge) in comparison to mineral water rinsing (control), according to wiped and non-wiped enamel surface states...
June 22, 2017: Caries Research
https://www.readbyqxmd.com/read/28636964/rna-interference-in-mammals-the-virus-strikes-back
#13
Bryan R Cullen
The importance of RNA interference (RNAi) as a mammalian antiviral defense mechanism has been controversial. Qiu et al. (2017) now present data suggesting that the difficulty of detecting RNAi in virus-infected mammalian cells reflects the expression of highly effective viral suppressors of RNAi.
June 20, 2017: Immunity
https://www.readbyqxmd.com/read/28636854/cluster-randomized-crossover-trial-of-head-positioning-in-acute-stroke
#14
Craig S Anderson, Hisatomi Arima, Pablo Lavados, Laurent Billot, Maree L Hackett, Verónica V Olavarría, Paula Muñoz Venturelli, Alejandro Brunser, Bin Peng, Liying Cui, Lily Song, Kris Rogers, Sandy Middleton, Joyce Y Lim, Denise Forshaw, C Elizabeth Lightbody, Mark Woodward, Octavio Pontes-Neto, H Asita De Silva, Ruey-Tay Lin, Tsong-Hai Lee, Jeyaraj D Pandian, Gillian E Mead, Thompson Robinson, Caroline Watkins
BACKGROUND: The role of supine positioning after acute stroke in improving cerebral blood flow and the countervailing risk of aspiration pneumonia have led to variation in head positioning in clinical practice. We wanted to determine whether outcomes in patients with acute ischemic stroke could be improved by positioning the patient to be lying flat (i.e., fully supine with the back horizontal and the face upwards) during treatment to increase cerebral perfusion. METHODS: In a pragmatic, cluster-randomized, crossover trial conducted in nine countries, we assigned 11,093 patients with acute stroke (85% of the strokes were ischemic) to receive care in either a lying-flat position or a sitting-up position with the head elevated to at least 30 degrees, according to the randomization assignment of the hospital to which they were admitted; the designated position was initiated soon after hospital admission and was maintained for 24 hours...
June 22, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28636791/isotretinoin-and-lymecycline-treatments-modify-the-skin-microbiota-in-acne
#15
Hanna-Leena Kelhälä, Velma T E Aho, Nanna Fyhrquist, Pedro A B Pereira, Minna E Kubin, Lars Paulin, Riitta Palatsi, Petri Auvinen, Kaisa Tasanen, Antti Lauerma
Oral retinoids and tetracyclines have a major role in acne treatment. Here, we report for the first time the effect of isotretinoin and lymecycline therapy on the skin microbiota in cheek, back and armpit swab samples of acne vulgaris patients using 16S ribosomal RNA (16S rRNA) gene amplicon sequencing. Propionibacterium acnes was the most common in sebaceous areas of healthy and untreated acne skin and more abundant in back than cheek samples. Five taxa, including a Streptococcus taxon, differed significantly between the cheek samples of healthy controls and acne patients, and acne severity was positively correlated with the abundance of Propionibacterium...
June 21, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28636724/temporal-relationships-between-job-strain-and-low-back-pain
#16
Linda L Magnusson Hanson, Ida Eh Madsen, Reiner Rugulies, Paraskevi Peristera, Hugo Westerlund, Alexis Descatha
Objectives Psychosocial working conditions are suggested risk factors for low-back pain, but it is unclear whether these associations are causal. The present study examined whether there are lagged and bidirectional associations between job strain and low-back pain and further controlled for unmeasured time-invariant confounding. Methods The study was based on four biennial waves of data from the Swedish Longitudinal Occupational Survey of Health (SLOSH), including 3084 men and women. Cross-lagged analyses using structural equation modeling (SEM) were conducted on job strain, a combination of high job demands and low control, and any as well as low-back pain severity (how much any problems affected the respondents life)...
June 21, 2017: Scandinavian Journal of Work, Environment & Health
https://www.readbyqxmd.com/read/28636653/the-ebola-virus-vp35-protein-binds-viral-immunostimulatory-and-host-rnas-identified-through-deep-sequencing
#17
Kari A Dilley, Alexander A Voorhies, Priya Luthra, Vinita Puri, Timothy B Stockwell, Hernan Lorenzi, Christopher F Basler, Reed S Shabman
Ebola virus and Marburg virus are members of the Filovirdae family and causative agents of hemorrhagic fever with high fatality rates in humans. Filovirus virulence is partially attributed to the VP35 protein, a well-characterized inhibitor of the RIG-I-like receptor pathway that triggers the antiviral interferon (IFN) response. Prior work demonstrates the ability of VP35 to block potent RIG-I activators, such as Sendai virus (SeV), and this IFN-antagonist activity is directly correlated with its ability to bind RNA...
2017: PloS One
https://www.readbyqxmd.com/read/28636399/helium-accepts-back-donation-in-highly-polar-complexes-new-insights-into-the-weak-chemical-bond
#18
Francesca Nunzi, Diego Cesario, Fernando Pirani, Leonardo Belpassi, Gernot Frenking, Felice Grandinetti, Francesco Tarantelli
We studied the puzzling stability and short distances predicted by theory for helium adducts with some highly polar molecules, such as BeO or AuF. On the basis of high-level quantum-chemical calculations, we carried out a detailed analysis of the charge displacement occurring upon adduct formation. For the first time we have unambiguously ascertained that helium is able not only to donate electron density, but also, unexpectedly, to accept electron density in the formation of weakly bound adducts with highly polar substrates...
June 21, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28636350/integrating-a-semi-transparent-fullerene-free-organic-solar-cell-in-tandem-with-a-bivo4-photoanode-for-unassisted-solar-water-splitting
#19
Yuelin Peng, Gokul V Govindaraju, Dong Ki Lee, Kyoung-Shin Choi, Trisha L Andrew
We report an unassisted solar water splitting system powered by a diketopyrrolopyrrole (DPP)-containing semi-transparent organic solar cell. Two major merits of this fullerene-free solar cell enable its integration with a BiVO4 photoanode. First is the high open circuit voltage and high fill factor displayed by this single junction solar cell, which yields sufficient power to effect water splitting when serially-connected to an appropriate electrode/catalyst. Second, the wavelength-resolved photoaction spectrum of the DPP-based solar cell has minimal overlap with that of the BiVO4 photoanode, thus ensuring that light collection across these two components can be optimized...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28636326/experimental-study-of-the-detection-limit-in-dual-gate-biosensors-using-ultra-thin-silicon-transistors
#20
Ting Wu, Abdullah Alharbi, Kae-Dyi You, Kim Kisslinger, Eric A Stach, Davood Shahrjerdi
Dual-gate field-effect biosensors (bioFETs) with asymmetric gate capacitances were shown to surpass the Nernst limit of 59 mV/pH. However, previous studies have conflicting findings on the effect of the capacitive amplification scheme on the sensor detection limit, which is inversely proportional to the signal-to-noise ratio (SNR). Here, we present a systematic experimental investigation of the SNR using ultra-thin silicon transistors. Our sensors operate at low voltage and feature asymmetric front and back oxide capacitances with asymmetry factors of 1...
June 21, 2017: ACS Nano
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