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Critical power performance

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https://www.readbyqxmd.com/read/28541468/a-fast-and-exhaustive-method-for-heterogeneity-and-epistasis-analysis-based-on-multi-objective-optimization
#1
Xiong Li
Motivation: The existing epistasis analysis approaches have been criticized mainly for their: 1) ignoring heterogeneity during epistasis analysis; 2) high computational costs; and 3) volatility of performances and results. Therefore, they will not perform well in general, leading to lack of reproducibility and low power in complex disease association studies. Method: In this work, a fast scheme is proposed to accelerate exhaustive searching based on multi-objective optimization named ESMO for concurrently analyzing heterogeneity and epistasis phenomena...
May 24, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28537741/an-optimized-extraction-method-to-remove-humic-acids-interferences-from-soil-samples-prior-to-microbial-proteome-measurements
#2
Chen Qian, Robert L Hettich
The microbial composition and their activities in soil environments play a critical role in organic matter transformation and nutrient cycling. Liquid chromatography coupled to high performance mass spectrometry provides a powerful approach to characterize soil microbiomes; however, the limited microbial biomass and the presence of abundant interferences in soil samples present major challenges to proteome extraction and subsequent MS measurement. To this end, we have designed an experimental method to improve microbial proteome measurement by removing the soil-borne humic substances co-extraction from soils...
May 24, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28535338/a-flexible-lithium-ion-fiber-battery-by-regularly-stacking-two-dimensional-titanium-oxide-nanosheets-hybridized-with-reduced-graphene-oxide
#3
Tatsumasa Hoshide, Yuanchuan Zheng, Junyu Hou, Zhiqiang Wang, Qingwen Li, Zhigang Zhao, Renzhi Ma, Takayoshi Sasaki, Fengxia Geng
Increasing interest has recently been devoted to developing small, rapid, and portable electronic devices; thus, it is becoming critically important to provide matching light and flexible energy-storage systems to power them. To this end, compared with the inevitable drawbacks of being bulky, heavy, and rigid for traditional planar sandwiched structures, linear fiber-shaped lithium-ion batteries (LIB) have become increasingly important owing to their combined superiorities of miniaturization, adaptability, and weavability, the progress of which is heavily dependent on developing new fiber-shaped electrodes...
May 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28532825/growth-performance-reproductive-traits-and-offspring-survivability-of-genetically-modified-rams-overexpressing-toll-like-receptor-4
#4
Yu-Chang Yao, Hong-Bing Han, Xu-Ting Song, Shou-Long Deng, Yu-Feng Liu, Ming-Hai Lu, Yun-Hai Zhang, Mei-Yu Qi, Hai-Juan He, Su-Mei Wang, Guo-Shi Liu, Wu Li, Zheng-Xing Lian
Genetic modification provides a means to enhancing disease resistance in animals. Toll-like receptor 4 (TLR4), a member of the TLR family, is critical for the recognition of lipopolysaccharide (LPS)/endotoxin from Gram-negative bacteria by host immune cells, which initiates cell activation and subsequently triggers a proinflammatory response to the invading pathogens. In this study, the first generation of genetically modified (GM) sheep overexpressing TLR4 was produced by microinjection for better disease resistance...
July 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28531560/uneasy-encounters-youth-social-dis-comfort-and-the-autistic-self
#5
Edmund Coleman-Fountain
Notions of deficit and 'faultiness' shape depictions of the association between autism and uneasy social relationships. That framing has been the focus of critique by autistic activists and scholars who, exploring autistic people's sociality, reframe issues of social difficulty in terms of inequality and discomfort. Located within this set of debates, the article analyses data from a UK based study of mental health narratives derived from semi-structured interviews with 19 autistic young adults aged 23 to 24...
May 12, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28530476/time-trials-versus-time-to-exhaustion-tests-effects-on-critical-power-w-and-oxygen-uptake-kinetics
#6
Bettina Karsten, Jonathan Baker, Fernando Naclerio, Andreas Klose, Antonino Bianco, Alfred Nimmerichter
PURPOSE: To investigate single-day time-to-exhaustion (TTE) and time trial (TT) based laboratory tests values of critical power (CP), Wprime (W') and respective oxygen kinetics responses. METHODS: Twelve cyclists performed a maximal ramp test followed by three TTE and three TT efforts interspersed by a 60-min recovery between efforts. Oxygen uptake was measured during all trials. The mean response time (MRT) was calculated as a description of the overall V̇O2 kinetic response from the onset to 2 min of exercise...
May 22, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28530093/iron-oxide-nanoparticles-powered-micro-optical-coherence-tomography-for-in-situ-imaging-the-penetration-and-swelling-of-polymeric-microneedles-in-skin
#7
Razina Z Seeni, Xiaojun Yu, Hao Chang, Peng Chen, Linbo Liu, Chenjie Xu
In recent years, polymeric microneedles (MNs) have attracted keen interests among researchers for their applicability in transdermal drug delivery and interstitial skin fluid (ISF) extraction. When design and characterize such devices, it is critical to monitor their real-time in vitro and in vivo performances to optimize the desired effects, yet most of the existing methods are incapable of such functions. To address this unmet need, we develop a real-time non-invasive imaging methodology by integrating iron oxide (Fe3O4) nanoparticles into polymeric MNs to enhance image contrast for micro-optical coherence tomography (µOCT) imaging...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28526578/barrel-cortex-what-is-it-good-for
#8
REVIEW
Maik C Stüttgen, Cornelius Schwarz
The rodent whisker system, with barrel cortex as its most prominent structure, has evolved into a powerful model system to study sensory processing. However, despite the vast amount of data collected on barrel cortex neural activity patterns, as well as its circuitry and plasticity, the precise behavioral and cognitive operations for which this structure is needed are still elusive. Proposed functions of barrel cortex include detection, discrimination, coordination of whisker movements during exploratory locomotion or active touch, and associative learning...
May 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/28518221/micronutrient-supplementation-in-adults-with-hiv-infection
#9
REVIEW
Marianne E Visser, Solange Durao, David Sinclair, James H Irlam, Nandi Siegfried
BACKGROUND: Micronutrient deficiencies are common among adults living with HIV disease, particularly in low-income settings where the diet may be low in essential vitamins and minerals. Some micronutrients play critical roles in maintenance of the immune system, and routine supplementation could therefore be beneficial. This is an update of a Cochrane Review previously published in 2010. OBJECTIVES: To assess whether micronutrient supplements are effective and safe in reducing mortality and HIV-related morbidity of HIV-positive adults (excluding pregnant women)...
May 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28514597/a-blocked-linear-method-for-optimizing-large-parameter-sets-in-variational-monte-carlo
#10
Luning Zhao, Eric Neuscamman
We present a modification to variational Monte Carlo's linear method optimization scheme that addresses a critical memory bottleneck while maintaining compatibility with both the traditional ground state variational principle and our recently-introduced variational principle for excited states. For wave function ansatzes with tens of thousands of variables, our modification reduces the required memory per parallel process from tens of gigabytes to hundreds of megabytes, making the methodology a much better fit for modern supercomputer architectures in which data communication and per-process memory consumption are primary concerns...
May 17, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28505782/nonequilibrium-critical-dynamics-of-the-two-dimensional-ashkin-teller-model-at-the-baxter-line
#11
H A Fernandes, R da Silva, A A Caparica, J R Drugowich de Felício
We investigate the short-time universal behavior of the two-dimensional Ashkin-Teller model at the Baxter line by performing time-dependent Monte Carlo simulations. First, as preparatory results, we obtain the critical parameters by searching the optimal power-law decay of the magnetization. Thus, the dynamic critical exponents θ_{m} and θ_{p}, related to the magnetic and electric order parameters, as well as the persistence exponent θ_{g}, are estimated using heat-bath Monte Carlo simulations. In addition, we estimate the dynamic exponent z and the static critical exponents β and ν for both order parameters...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28505763/comparative-study-of-noise-in-low-current-townsend-discharge-in-nitrogen-and-argon
#12
Yu A Astrov, A N Lodygin, L M Portsel, E V Beregulin
Noise in a low-current Townsend discharge in argon and nitrogen is studied. Experiments were performed in a "semiconductor-gas-discharge" structure constituted by a short plane-parallel discharge gap and a high-resistivity photosensitive semiconductor electrode. The noise of optical emission from gas excited by the discharge was investigated with a photomultiplier. Experiments were done at the room temperature of the discharge structure. According to the obtained data, the noise of discharge glow in Ar is astonishingly low-similar to that earlier found for the cryogenic discharge in this gas...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28499954/systematic-review-and-meta-analysis-of-gait-mechanics-in-young-and-older-adults
#13
Katherine A Boyer, Russell T Johnson, Jacob J Banks, Carl Jewell, Jocelyn F Hafer
BACKGROUND: Age-related gait changes may play a critical role in functional limitations of older adults. Despite sizable interest in determining how age alters walking mechanics, small sample sizes and varied outcome measures have precluded a comprehensive understanding of the impact of age on lower extremity joint kinematics and kinetics. OBJECTIVE: The aim of this study was to perform a systematic review and meta-analysis of the aging gait mechanics literature...
May 9, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28497663/mortality-risk-prediction-models-for-coronary-artery-bypass-graft-surgery-current-scenario-and-future-direction
#14
Md N Karim, Christopher M Reid, Andrew Cochrane, Lavinia Tran, Mohammed Alramadan, Md N Hossain, Baki Billah
INTRODUCTION: Many risk prediction models are currently in use for predicting short-term mortality following Coronary Artery Bypass Graft (CABG) surgery. This review critically appraised the methods that were used for developing these models to assess their applicability in current practice setting as well as for the necessity of up-gradation. EVIDENCE ACQUISITION: Medline via Ovid was searched for articles published between 1946 and 2016 and EMBASE via Ovid between 1974 and 2016 to identify risk prediction models for CABG...
May 11, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28495054/phasic-availability-of-terminal-electron-acceptor-on-oxygen-reduction-reaction-in-microbial-fuel-cell
#15
J Shanthi Sravan, Sai Kishore Butti, Anil Verma, S Venkata Mohan
Oxygen-reduction reactions (ORR) plays a pivotal role in determining microbial fuel cells (MFC) performance. In this study, an attempt to determine the influence of the phasic availability of terminal electron acceptor (TEA) on ORR was made. Two MFCs operated with dissolved oxygen (MFC-DC) and air (MFC-SC) as TEA were constructed and analyzed in continuous mode under open and closed circuit conditions. The bio-electrochemical analysis showed a marked influence of dissolved oxygen resulting in a maximum power density with MFC-DC (769mW/m(2)) compared to MFC-SC (684mW/m(2))...
April 9, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28492078/a-general-strategy-for-controlled-synthesis-of-nixpy-carbon-and-their-evaluation-as-counter-electrode-materials-in-dye-sensitized-solar-cells
#16
Ming Chen, Leng-Leng Shao, Zhong-Yong Yuan, Qiangshan Jing, Ke-Jing Huang, Zhongyuan Huang, Xiang-Hua Zhao, Guo-Dong Zou
Hydrothermal treatment of nickel acetate and phosphoric acid aqueous solution followed with a carbothermal reduction assisted phosphorization process using sucrose as carbon source for the controlled synthesis of NixPy/C has been successfully realized for the first time. The critical synthesis factors including reduction temperature, phosphorus/nickel ratio, pH value and sucrose amount are systematically investigated. Remarkably, the carbon serves as a reducer, plays a determinative role in the transformation of Ni2P2O7 into Ni2P/C...
May 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28489906/neocortical-activity-is-stimulus-and-scale-invariant
#17
Yahya Karimipanah, Zhengyu Ma, Jae-Eun Kang Miller, Rafael Yuste, Ralf Wessel
Mounting evidence supports the hypothesis that the cortex operates near a critical state, defined as the transition point between order (large-scale activity) and disorder (small-scale activity). This criticality is manifested by power law distribution of the size and duration of spontaneous cascades of activity, which are referred as neuronal avalanches. The existence of such neuronal avalanches has been confirmed by several studies both in vitro and in vivo, among different species and across multiple spatial scales...
2017: PloS One
https://www.readbyqxmd.com/read/28489301/hyperelastic-tough-gels-through-macrocross-linking
#18
Shailesh K Goswami, Christopher John McAdam, Lyall R Hanton, Stephen C Moratti
The wet and soft nature of hydrogels makes them useful as a mimic for biological tissues, and in uses such as actuators and drug delivery vehicles. For many applications the mechanical performance of the gel is critical, but gels are notoriously weak and prone to fracture. Free radical polymerization is a very powerful technique allowing for fine spatial and temporal control of polymerization, but also allows for the use of a wide range of monomers and mixtures. In this work, it is demonstrated that extremely tough and extensible hydrogels can be readily produced through simple radical polymerization of acrylamide or acrylic acid with a poly(ethylene oxide) macrocross-linker...
May 10, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28488846/impact-of-film-thickness-of-ultrathin-dip-coated-compact-tio2-layers-on-the-performance-of-mesoscopic-perovskite-solar-cells
#19
Muhammad Talha Masood, Christian Weinberger, Jawad Sarfraz, Emil Rosqvist, Simon Sandén, Oskar J Sandberg, Paola Vivo, Ghufran Hashmi, Peter D Lund, Ronald Österbacka, Jan-Henrik Smått
Uniform and pinhole-free electron-selective TiO2 layers are of utmost importance for efficient perovskite solar cells. Here we used a scalable and low-cost dip-coating method to prepare uniform and ultrathin (5-50 nm) compact TiO2 films on fluorine-doped tin oxide (FTO) glass substrates. The thickness of the film was tuned by changing the TiCl4 precursor concentration. The formed TiO2 follows the texture of the underlying FTO substrates, but at higher TiCl4 concentrations, the surface roughness is substantially decreased...
May 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28486889/coming-full-circle-thirty-years-of-paediatric-fluid-resuscitation
#20
N J Glassford, B Gelbart, R Bellomo
Fluid bolus therapy (FBT) is a cornerstone of the management of the septic child, but clinical research in this field is challenging to perform, and hard to interpret. The evidence base for independent benefit from liberal FBT in the developed world is limited, and the Fluid Expansion as Supportive Therapy (FEAST) trial has led to conservative changes in the World Health Organization-recommended approach to FBT in resource-poor settings. Trials in the intensive care unit (ICU) and emergency department settings post-FEAST have continued to explore liberal FBT strategies as the norm, despite a strong signal associating fluid accumulation with pulmonary pathology in the paediatric population...
May 2017: Anaesthesia and Intensive Care
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