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https://www.readbyqxmd.com/read/27925717/theory-of-enhanced-interlayer-tunneling-in-optically-driven-high-t_-c-superconductors
#1
Jun-Ichi Okamoto, Andrea Cavalleri, Ludwig Mathey
Motivated by recent pump-probe experiments indicating enhanced coherent c-axis transport in underdoped YBCO, we study Josephson junctions periodically driven by optical pulses. We propose a mechanism for this observation by demonstrating that a parametrically driven Josephson junction shows an enhanced imaginary part of the low-frequency conductivity when the driving frequency is above the plasma frequency, implying an effectively enhanced Josephson coupling. We generalize this analysis to a bilayer system of Josephson junctions modeling YBCO...
November 25, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27925436/the-chemical-route-to-a-co2-neutral-world
#2
Johan Martens, Annemie Bogaerts, Norbert De Kimpe, Pierre Jacobs, Guy Marin, Korneel Rabaey, Mark Saeys, Sebastian Verhelst
The excessive CO2 emissions in the atmosphere from anthropogenic activity can be divided into point sources and diffuse sources. The capture of CO2 from flue gases of large industrial installations and its conversion to fuels and chemicals with fast catalytic processes seems technically possible. Some emerging technologies are already being demonstrated on an industrial scale. Others are still being tested on a laboratory or pilot scale. These emerging technologies can be implemented in a time-window ranging from 5 to 20 years...
December 7, 2016: ChemSusChem
https://www.readbyqxmd.com/read/27924312/protein-ligand-interaction-detection-with-a-novel-method-of-transient-induced-molecular-electronic-spectroscopy-times-experimental-and-theoretical-studies
#3
Tiantian Zhang, Tao Wei, Yuanyuan Han, Heng Ma, Mohammadreza Samieegohar, Ping-Wei Chen, Ian Lian, Yu-Hwa Lo
Protein-ligand interaction detection without disturbances (e.g., surface immobilization, fluorescent labeling, and crystallization) presents a key question in protein chemistry and drug discovery. The emergent technology of transient induced molecular electronic spectroscopy (TIMES), which incorporates a unique design of microfluidic platform and integrated sensing electrodes, is designed to operate in a label-free and immobilization-free manner to provide crucial information for protein-ligand interactions in relevant physiological conditions...
November 23, 2016: ACS Central Science
https://www.readbyqxmd.com/read/27923976/early-restriction-of-placental-growth-results-in-placental-structural-and-gene-expression-changes-in-late-gestation-independent-of-fetal-hypoxemia
#4
Song Zhang, Paige Barker, Kimberley J Botting, Claire T Roberts, Christine M McMillan, Isabella Caroline McMillen, Janna L Morrison
Placental restriction and insufficiency are associated with altered patterns of placental growth, morphology, substrate transport capacity, growth factor expression, and glucocorticoid exposure. We have used a pregnant sheep model in which the intrauterine environment has been perturbed by uterine carunclectomy (Cx). This procedure results in early restriction of placental growth and either the development of chronic fetal hypoxemia (PaO2≤17 mmHg) in late gestation or in compensatory placental growth and the maintenance of fetal normoxemia (PaO2>17 mmHg)...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/27923422/first-responders-and-prehospital-care-for-road-traffic-injuries-in-malawi
#5
Linda Chokotho, Wakisa Mulwafu, Isaac Singini, Yasin Njalale, Limbika Maliwichi-Senganimalunje, Kathryn H Jacobsen
: Introduction Road traffic collisions are a common cause of injuries and injury-related deaths in sub-Saharan Africa (SSA). Basic prehospital care can be the difference between life and death for injured drivers, passengers, and pedestrians. Problem This study examined the challenges associated with current first response practices in Malawi. METHODS: In April 2014, focus groups were conducted in two areas of Malawi: Karonga (in the Northern Region) and Blantyre (in the Southern Region; both are along the M1 highway), and a qualitative synthesis approach was used to identify themes...
December 7, 2016: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/27923115/a-comparison-of-the-universal-tor-guideline-to-the-absence-of-prehospital-rosc-and-duration-of-resuscitation-in-predicting-futility-from-out-of-hospital-cardiac-arrest
#6
Ian R Drennan, Erin Case, P Richard Verbeek, Joshua C Reynolds, Zachary D Goldberger, Jamie Jasti, Mark Charleston, Heather Herren, Ahamed H Idris, Paul R Leslie, Michael A Austin, Yan Xiong, Robert H Schmicker, Laurie J Morrison
INTRODUCTION: The Universal Termination of Resuscitation (TOR) Guideline accurately identifies potential out-of-hospital cardiac arrest (OHCA) survivors. However, implementation is inconsistent with some Emergency Medical Service (EMS) agencies using absence of return of spontaneous circulation (ROSC) as sole criterion for termination. OBJECTIVE: To compare the performance of the Universal TOR Guideline with the single criterion of no prehospital ROSC. Second, to determine factors associated with survival for patients transported without a ROSC...
December 3, 2016: Resuscitation
https://www.readbyqxmd.com/read/27923069/characterization-in-helicobacter-pylori-of-a-nickel-transporter-essential-for-colonization-that-was-acquired-during-evolution-by-gastric-helicobacter-species
#7
Frédéric Fischer, Marie Robbe-Saule, Evelyne Turlin, Francesco Mancuso, Valérie Michel, Pierre Richaud, Frédéric J Veyrier, Hilde De Reuse, Daniel Vinella
Metal acquisition is crucial for all cells and for the virulence of many bacterial pathogens. In particular, nickel is a virulence determinant for the human gastric pathogen Helicobacter pylori as it is the cofactor of two enzymes essential for in vivo colonization, urease and a [NiFe] hydrogenase. To import nickel despite its scarcity in the human body, H. pylori requires efficient uptake mechanisms that are only partially defined. Indeed, alternative ways of nickel entry were predicted to exist in addition to the well-described NixA permease...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27922072/molecular-structure-and-dynamics-of-water-on-pristine-and-strained-phosphorene-wetting-and-diffusion-at-nanoscale
#8
Wei Zhang, Chao Ye, Linbi Hong, Zaixing Yang, Ruhong Zhou
Phosphorene, a newly fabricated two-dimensional (2D) nanomaterial, has emerged as a promising material for biomedical applications with great potential. Nonetheless, understanding the wetting and diffusive properties of bio-fluids on phosphorene which are of fundamental importance to these applications remains elusive. In this work, using molecular dynamics (MD) simulations, we investigated the structural and dynamic properties of water on both pristine and strained phosphorene. Our simulations indicate that the diffusion of water molecules on the phosphorene surface is anisotropic, with strain-enhanced diffusion clearly present, which arises from strain-induced smoothing of the energy landscape...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921174/spatiotemporal-variations-of-extreme-low-temperature-for-emergency-transport-a-nationwide-observational-study
#9
Daisuke Onozuka, Akihito Hagihara
Although recent studies have investigated the effect of extreme heat on emergency transport, few have investigated the spatiotemporal variations of extreme low temperature for emergency transport on a national scale. Data pertaining to emergency ambulance transport and weather variation in the 47 prefectures of Japan between 2007 and 2010 were obtained. Nonlinear and delayed relationships between temperature and morbidity were assessed using a two-stage analysis. First, a Poisson regression analysis allowing for overdispersion in a distributed lag nonlinear model was used to estimate the prefecture-specific effects of temperature on morbidity...
December 5, 2016: International Journal of Biometeorology
https://www.readbyqxmd.com/read/27921095/journey-from-the-center-of-the-cell-the-intra-and-intercellular-transport-of-mrna
#10
Anna Kasprowicz-Maluśki, Wojciech Kwiatkowski, Alicja Starosta, Przemysław Wojtaszek
Transport and localized translation of mRNA is crucial for the proper spatiotemporal organization of proteins within cells. Distribution of RNAs to subcellular domains has recently emerged as a major mechanism for establishing functionally distinct compartments and structures in the cells. There is an emerging evidence that active transport of mRNA involves cytoskeleton and membrane trafficking pathways in fungi, plants and animals, suggesting that it is a common phenomenon among eukaryotes. The important highlights are that the RNA-binding proteins recognize the cargo mRNA and that RNPs are actively transported on the cytoskeletal tracks or co-transported with membranous compartments, such as the endoplasmic reticulum and endosomes...
December 6, 2016: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/27919066/designed-proteins-induce-the-formation-of-nanocage-containing-extracellular-vesicles
#11
Jörg Votteler, Cassandra Ogohara, Sue Yi, Yang Hsia, Una Nattermann, David M Belnap, Neil P King, Wesley I Sundquist
Complex biological processes are often performed by self-organizing nanostructures comprising multiple classes of macromolecules, such as ribosomes (proteins and RNA) or enveloped viruses (proteins, nucleic acids and lipids). Approaches have been developed for designing self-assembling structures consisting of either nucleic acids or proteins, but strategies for engineering hybrid biological materials are only beginning to emerge. Here we describe the design of self-assembling protein nanocages that direct their own release from human cells inside small vesicles in a manner that resembles some viruses...
November 30, 2016: Nature
https://www.readbyqxmd.com/read/27918864/comparison-of-emergency-medical-services-and-trauma-care-systems-among-pan-asian-countries-an-international-multicenter-population-based-survey
#12
Kyong Min Sun, Kyoung Jun Song, Sang Do Shin, Hideharu Tanaka, Goh E Shaun, Wen-Chu Chiang, Kentaro Kajino, Sabariah Faizah Jamaluddin, Akio Kimura, Young Sun Ro, Dae Han Wi, Ju Ok Park, Sung Woo Moon, Young Hee Jung, Min Jung Kim, James F Holmes
OBJECTIVE: Knowledge on the current trauma systems in Asian countries is limited. The objective of this study was to describe the emergency medical services (EMS) and trauma care systems among countries participating in the Pan-Asian Trauma Outcomes Study (PATOS) Clinical Research Network. METHODS: The PATOS network consists of 33 participating sites from 14 countries. Standardized data was collected from each site using an EMS survey form and included general information (population, population density, urbanization, EMS service fee, etc...
December 5, 2016: Prehospital Emergency Care
https://www.readbyqxmd.com/read/27918863/ems-providers-beliefs-regarding-spinal-precautions-for-pediatric-trauma-transport
#13
Cindy D Chang, Remle P Crowe, Melissa A Bentley, Alyssa R Janezic, Julie C Leonard
OBJECTIVE: Describe prehospital Emergency Medical Services (EMS) providers' beliefs regarding spinal precautions for pediatric trauma transport. METHODS: We randomly surveyed nationally certified EMS providers. We assessed providers' beliefs about specific precautions, and preferred precautions given a child's age (0-4 or 5-18 years) and presence of specific cervical spine injury (CSI) risk factors. RESULTS: We received 5,400 responses (17%)...
December 5, 2016: Prehospital Emergency Care
https://www.readbyqxmd.com/read/27917858/discovery-of-a-new-type-of-topological-weyl-fermion-semimetal-state-in-moxw1-xte2
#14
Ilya Belopolski, Daniel S Sanchez, Yukiaki Ishida, Xingchen Pan, Peng Yu, Su-Yang Xu, Guoqing Chang, Tay-Rong Chang, Hao Zheng, Nasser Alidoust, Guang Bian, Madhab Neupane, Shin-Ming Huang, Chi-Cheng Lee, You Song, Haijun Bu, Guanghou Wang, Shisheng Li, Goki Eda, Horng-Tay Jeng, Takeshi Kondo, Hsin Lin, Zheng Liu, Fengqi Song, Shik Shin, M Zahid Hasan
The recent discovery of a Weyl semimetal in TaAs offers the first Weyl fermion observed in nature and dramatically broadens the classification of topological phases. However, in TaAs it has proven challenging to study the rich transport phenomena arising from emergent Weyl fermions. The series MoxW1-xTe2 are inversion-breaking, layered, tunable semimetals already under study as a promising platform for new electronics and recently proposed to host Type II, or strongly Lorentz-violating, Weyl fermions. Here we report the discovery of a Weyl semimetal in MoxW1-xTe2 at x=25%...
December 5, 2016: Nature Communications
https://www.readbyqxmd.com/read/27917155/aerobic-lineage-of-the-oxidative-stress-response-protein-rubrerythrin-emerged-in-an-ancient-microaerobic-hyper-thermophilic-environment
#15
Juan P Cardenas, Raquel Quatrini, David S Holmes
Rubrerythrins (RBRs) are non-heme di-iron proteins belonging to the ferritin-like superfamily. They are involved in oxidative stress defense as peroxide scavengers in a wide range of organisms. The vast majority of RBRs, including classical forms of this protein, contain a C-terminal rubredoxin-like domain involved in electron transport that is used during catalysis in anaerobic conditions. Rubredoxin is an ancient and large protein family of short length (<100 residues) that contains a Fe-S center involved in electron transfer...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27916931/manipulation-and-immobilization-of-a-single-fluorescence-nanosensor-for-selective-injection-into-cells
#16
Hairulazwan Hashim, Hisataka Maruyama, Taisuke Masuda, Fumihito Arai
Manipulation and injection of single nanosensors with high cell viability is an emerging field in cell analysis. We propose a new method using fluorescence nanosensors with a glass nanoprobe and optical control of the zeta potential. The nanosensor is fabricated by encapsulating a fluorescence polystyrene nanobead into a lipid layer with 1,3,3-trimethylindolino-6'-nitrobenzopyrylospiran (SP), which is a photochromic material. The nanobead contains iron oxide nanoparticles and a temperature-sensitive fluorescent dye, Rhodamine B...
December 1, 2016: Sensors
https://www.readbyqxmd.com/read/27914641/reduction-of-neonicotinoid-insecticide-residues-in-prairie-wetlands-by-common-wetland-plants
#17
Anson R Main, Jessica Fehr, Karsten Liber, John V Headley, Kerry M Peru, Christy A Morrissey
Neonicotinoid insecticides are frequently detected in wetlands during the early to mid-growing period of the Canadian Prairie cropping season. These detections also overlap with the growth of macrophytes that commonly surround agricultural wetlands which we hypothesized may reduce neonicotinoid transport and retention in wetlands. We sampled 20 agricultural wetlands and 11 macrophyte species in central Saskatchewan, Canada, over eight weeks to investigate whether macrophytes were capable of reducing movement of neonicotinoids from cultivated fields and/or reducing concentrations in surface water by accumulating insecticide residues into their tissues...
November 30, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27914540/evaluation-of-antidesmone-alkaloid-as-a-photosynthesis-inhibitor
#18
Olívia Moreira Sampaio, Murilo Marinho de Castro Lima, Thiago André Moura Veiga, Beatriz King-Díaz, Maria Fátima das Graças Fernandes da Silva, Blas Lotina-Hennsen
Antidesmone, isolated from Waltheria brachypetala Turcz., owns special structural features as two α,β-unsaturated carbonyl groups and a side alkyl chain that can compete with the quinones involved in the pool of plastoquinones at photosystem II (PSII). In this work, we showed that the alkaloid is an inhibitor of Hill reaction and its target was located at the acceptor side of PSII. Studies of chlorophyll (Chl) a fluorescence showed a J-band that indicates direct action of antidesmone in accumulation of QA(-) (reduced plastoquinone A) due to the electron transport blocked at the QB (plastoquinone B) level similar to DCMU...
November 2016: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/27913853/the-role-of-intestinal-oxalate-transport-in-hyperoxaluria-and-the-formation-of-kidney-stones-in-animals-and-man
#19
REVIEW
Jonathan M Whittamore, Marguerite Hatch
The intestine exerts a considerable influence over urinary oxalate in two ways, through the absorption of dietary oxalate and by serving as an adaptive extra-renal pathway for elimination of this waste metabolite. Knowledge of the mechanisms responsible for oxalate absorption and secretion by the intestine therefore have significant implications for understanding the etiology of hyperoxaluria, as well as offering potential targets for future treatment strategies for calcium oxalate kidney stone disease. In this review, we present the recent developments and advances in this area over the past 10 years, and put to the test some of the new ideas that have emerged during this time, using human and mouse models...
December 2, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27913657/cost-benefit-analysis-of-telehealth-in-pre-hospital-care
#20
James R Langabeer, Tiffany Champagne-Langabeer, Diaa Alqusairi, Junghyun Kim, Adria Jackson, David Persse, Michael Gonzalez
OBJECTIVE: There has been very little use of telehealth in pre-hospital emergency medical services (EMS), yet the potential exists for this technology to transform the current delivery model. In this study, we explore the costs and benefits of one large telehealth EMS initiative. METHODS: Using a case-control study design and both micro- and gross-costing data from the Houston Fire Department EMS electronic patient care record system, we conducted a cost-benefit analysis (CBA) comparing costs with potential savings associated with patients treated through a telehealth-enabled intervention...
December 2, 2016: Journal of Telemedicine and Telecare
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