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https://www.readbyqxmd.com/read/28941047/mesoporous-semimetallic-conductors-structural-and-electronic-properties-of-cobalt-phosphide-systems
#1
Malay Pramanik, Satoshi Tominaka, Zhong-Li Wang, Toshiaki Takei, Yusuke Yamauchi
Mesoporous cobalt phosphide (meso-CoP) was prepared by the phosphorization of ordered mesoporous cobalt oxide (meso-Co3 O4 ). The electrical conductivity of meso-CoP is 37 times higher than that of nonporous CoP, and it displays semimetallic behavior with a negligibly small activation energy of 26 meV at temperatures below 296 K. Above this temperature, only materials with mesopores underwent a change in conductivity from semimetallic to semiconducting behavior. These properties were attributed to the coexistence of nanocrystalline Co2 P phases...
September 22, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28938021/alterations-in-the-ability-to-maintain-balance-as-a-result-of-stochastic-resonance-whole-body-vibration-in-women
#2
Karolina Donocik, Magdalena Hartman-Petrycka, Agata Lebiedowska, Barbara Błońska-Fajfrowska
PURPOSE: A vertical posture makes it difficult to maintain balance especially in the elderly. Loss of balance leads to falls and injuries. In the present study, we evaluated whether balance maintenance can be improved with the use of stochastic resonance whole body vibration (SR-WBV). METHODS: An examination of balance, involving 187 women aged 19-74 years, was conducted using double-plate posturography pre and post SR-WBV. The SR-WBV trainings were performed using the SRT Zeptor Medical-plus noise device...
2017: PloS One
https://www.readbyqxmd.com/read/28935262/identification-of-the-period-of-stability-in-a-balance-test-after-stepping-up-using-a-simplified-cumulative-sum
#3
Doha Safieddine, Aly Chkeir, Cyrille Herlem, Delphine Bera, Michèle Collart, Jean-Luc Novella, Moustapha Dramé, David J Hewson, Jacques Duchêne
Falls are a major cause of death in older people. One method used to predict falls is analysis of Centre of Pressure (CoP) displacement, which provides a measure of balance quality. The Balance Quality Tester (BQT) is a device based on a commercial bathroom scale that calculates instantaneous values of vertical ground reaction force (Fz) as well as the CoP in both anteroposterior (AP) and mediolateral (ML) directions. The entire testing process needs to take no longer than 12 s to ensure subject compliance, making it vital that calculations related to balance are only calculated for the period when the subject is static...
September 18, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28931993/effects-of-augmented-reality-based-otago-exercise-on-balance-gait-and-physical-factors-in-elderly-women-to-prevent-falls-a-randomized-controlled-trial
#4
Jin Lee, Ha-Na Yoo, Byoung-Hee Lee
[Purpose] To determine the effect of augmented reality (AR)-based otago exercise on muscle strength, balance, and physical factors in falls of elderly women. [Subjects and Methods] Thirty subjects were randomly assigned to AR group (AR, n=10), yoga group (yoga, n=10), and self-exercise group (self, n=10). For 12 weeks, these groups were given lessons related to AR-based otago exercise including strengthening, balance training, or yoga three times a week (60 minutes each time) and self-exercise using elastic band exercise program...
September 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28928375/an-efficient-co3s4-cop-hybrid-catalyst-for-electrocatalytic-hydrogen-evolution
#5
Tingting Wang, Liqian Wu, Xiaobing Xu, Yuan Sun, Yuanqi Wang, Wei Zhong, Youwei Du
The development of efficient, universal and inexpensive electrocatalysts for hydrogen evolution reaction (HER) is central to the area of sustainable energy conversion. Considering the Co-based sulfides/phosphides have the same catalytic mechanism with the hydrogenases occurring in nature. Here, a new catalyst based on Co3S4/CoP hybrid that is comprised entirely cheap and earthabundant elements, was first synthesized via a two-step method, the Co(CO3)0.5(OH)·0.11H2O precursor was prepared by a hydrothermal method, followed by phosphidation and sulphidation under Ar atmosphere simultaneously...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928291/inhibiting-sterilization-induced-oxidation-of-large-molecule-therapeutics-packaged-in-plastic-parenteral-vials
#6
Jeffrey R Vieregg, Steven J Martin, Adam P Breeland, Christopher M Weikart, Matthew V Tirrell
For many years, glass has been the default material for parenteral packaging, but the development of advanced plastics such as cyclic olefin polymers (COP) and the rapidly increasing importance of biologic drugs have provided new choices, as well as more stringent performance requirements. In particular, many biologics must be stored at non-neutral pH, where glass is susceptible to hydrolysis, metal extraction, and delamination. Plastic containers are not susceptible to these problems, but suffer from higher gas permeability and a propensity for sterilization-induced radical generation, heightening the risk of oxidative damage to sensitive drugs...
September 19, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28926936/relationships-of-sexual-dysfunction-with-depression-and-acceptance-of-illness-in-women-and-men-with-type-2-diabetes-mellitus
#7
Ewelina Bąk, Czeslaw Marcisz, Sylwia Krzemińska, Dorota Dobrzyn-Matusiak, Agnieszka Foltyn, Agnieszka Drosdzol-Cop
An increased prevalence of sexual disorders has been reported in patients with type 2 diabetes. The aim of this study is the assessment of the influence of the psychical condition, the concentration of glycated hemoglobin, the duration of diabetes, the body mass index, the age, and the subjective acceptance of the illness on sexual disorders occurring in women and men with type 2 diabetes. The study enrolled 215 patients (114 women and 101 men) with type 2 diabetes and 183 controls. Sexuality was determined in all of the studied subjects using: the Female Sexual Function Index (FSFI) in women and the International Index of Erectile Function (IIEF) in men...
September 16, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28926910/removal-of-selected-nitrogenous-heterocyclic-compounds-in-biologically-pretreated-coal-gasification-wastewater-bpcgw-using-the-catalytic-ozonation-process-combined-with-the-two-stage-membrane-bioreactor-mbr
#8
Hao Zhu, Yuxing Han, Wencheng Ma, Hongjun Han, Weiwei Ma
Three identical anoxic-aerobic membrane bioreactors (MBRs) were operated in parallel for 300 consecutive days for raw (R1), ozonated (R2) and catalytic ozonated (R3) biologically pretreated coal gasification wastewater (BPCGW) treatment. The results demonstrated that catalytic ozonation process (COP) applied asa pretreatment remarkably improved the performance of the unsatisfactory single MBR. The overall removal efficiencies of COD, NH3-N and TN in R3 were 92.7%, 95.6% and 80.6%, respectively. In addition, typical nitrogenous heterocyclic compounds (NHCs) of quinoline, pyridine and indole were completely removed in the integrated process...
September 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28923661/the-influence-of-the-aquatic-environment-on-the-center-of-pressure-impulses-and-upper-and-lower-trunk-accelerations-during-gait-initiation
#9
Andresa R Marinho-Buzelli, Kei Masani, Hossein Rouhani, Ana M Barela, Gustavo T B Fernandes, Mary C Verrier, Milos R Popovic
Gait initiation is defined as the transition from stationary standing to steady-state walking. Despite the frequent use of therapy pools for training walking in early stages of rehabilitation, none have been reported on the effects of immersion on gait initiation. We aimed to analyze the center of pressure (COP) trajectories, the vertical and anteroposterior impulses and upper and lower trunk accelerations during anticipatory (APA) and execution phases of gait initiation. In the COP trajectory, the execution (EXE) phase was further subdivided in two phases: predominantly mediolateral (EXE1), and predominantly anteroposterior (EXE2)...
September 8, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28917361/immediate-effects-of-pilates-based-therapeutic-exercise-on-postural-control-of-young-individuals-with-non-specific-low-back-pain-a-randomized-controlled-trial
#10
Susana Lopes, Christophe Correia, Gonçalo Félix, Mário Lopes, Ana Cruz, Fernando Ribeiro
OBJECTIVES: Low back pain affects the person's ability to keep balance, especially in challenging conditions. The purpose of this study was to determine the immediate effects of Pilates exercises on postural sway and dynamic balance of young individuals with non-specific low back pain. DESIGN: Controlled laboratory design. SETTINGS AND MAIN OUTCOME MEASURES: Forty-six participants with non-specific low back pain were randomized to a Pilates (n=23, 10 males; age: 21...
October 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28915926/antimicrobial-resistance-patterns-of-staphylococcus-species-isolated-from-cats-presented-at-a-veterinary-academic-hospital-in-south-africa
#11
Daniel Nenene Qekwana, Dikeledi Sebola, James Wabwire Oguttu, Agricola Odoi
BACKGROUND: Antimicrobial resistance is becoming increasingly important in both human and veterinary medicine. This study investigated the proportion of antimicrobial resistant samples and resistance patterns of Staphylococcus isolates from cats presented at a veterinary teaching hospital in South Africa. Records of 216 samples from cats that were submitted to the bacteriology laboratory of the University of Pretoria academic veterinary hospital between 2007 and 2012 were evaluated. Isolates were subjected to antimicrobial susceptibility testing against a panel of 15 drugs using the disc diffusion method...
September 15, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28915097/synergies-and-motor-equivalence-in-voluntary-sway-tasks-the-effects-of-visual-and-mechanical-constraints
#12
Mariusz P Furmanek, Stanisław Solnik, Daniele Piscitelli, Omid Rasouli, Ali Falaki, Mark L Latash
The authors used two analyses developed within the framework of the uncontrolled manifold hypothesis to quantify multimuscle synergies during voluntary body sway: analysis of intertrial variance and analysis of motor equivalence with respect to the center of pressure (COP) trajectory. Participants performed voluntary sway tasks in the anteroposterior direction at 0.33 and 0.66 Hz. Muscle groups were identified in the space of muscle activations and used as elemental variables in the synergy analyses. Changing mechanical and vision feedback-based constraints led to significant changes in indices of sway performance such as COP deviations in the uninstructed, mediolateral direction and indices of spontaneous postural sway...
September 15, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28914718/balance-evaluation-of-prefrail-and-frail-community-dwelling-older-adults
#13
Larissa Tomasauskas Marques, Natalia Camargo Rodrigues, Emanuella Oliveira Angeluni, Fernanda Pinheiro Amador Dos Santos Pessanha, Natália Maira da Cruz Alves, Renato Campos Freire Júnior, Eduardo Ferriolli, Daniela Cristina Carvalho de Abreu
BACKGROUND AND PURPOSE: With the increase in the percentage of the population in older adulthood, issues such as frailty syndrome need to be considered. The aim of the present study was to evaluate the ability of the Balance Evaluation Systems Test (BESTest) and center of pressure (COP) in their ability to discriminate between nonfrail, prefrail, and frail older adults. The proposed hypothesis is that frail older adults would show poorer performance in BESTest tasks and higher oscillation of COP on a force platform...
September 13, 2017: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/28912700/action-direction-of-muscle-synergies-in-voluntary-multi-directional-postural-control
#14
Akari Kubo, Shota Hagio, Benio Kibushi, Toshio Moritani, Motoki Kouzaki
A muscle synergy is a coordinative structure of muscles that has been proposed as a strategy to reduce the number of variables that the central nervous system (CNS) has to address in motor tasks. In this article, the mechanical contribution of muscle synergies and coordinative structures of muscles in voluntary multi-directional postural control were investigated. The task for healthy, young subjects was to shift and align their center of pressure (COP) to targets dispersed in 12 different directions in the horizontal plane by leaning their bodies for 10 s...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28912240/highly-efficient-electrocaloric-cooling-with-electrostatic-actuation
#15
Rujun Ma, Ziyang Zhang, Kwing Tong, David Huber, Roy Kornbluh, Yongho Sungtaek Ju, Qibing Pei
Solid-state refrigeration offers potential advantages over traditional cooling systems, but few devices offer high specific cooling power with a high coefficient of performance (COP) and the ability to be applied directly to surfaces. We developed a cooling device with a high intrinsic thermodynamic efficiency using a flexible electrocaloric (EC) polymer film and an electrostatic actuation mechanism. Reversible electrostatic forces reduce parasitic power consumption and allow efficient heat transfer through good thermal contacts with the heat source or heat sink...
September 15, 2017: Science
https://www.readbyqxmd.com/read/28911837/quantifying-center-of-pressure-variability-in-chondrodystrophoid-dogs
#16
S R Blau, L M Davis, A M Gorney, C S Dohse, K D Williams, J-H Lim, W G Pfitzner, E Laber, G S Sawicki, N J Olby
The center of pressure (COP) position reflects a combination of proprioceptive, motor and mechanical function. As such, it can be used to quantify and characterize neurologic dysfunction. The aim of this study was to describe and quantify the movement of COP and its variability in healthy chondrodystrophoid dogs while walking to provide a baseline for comparison to dogs with spinal cord injury due to acute intervertebral disc herniations. Fifteen healthy adult chondrodystrophoid dogs were walked on an instrumented treadmill that recorded the location of each dog's COP as it walked...
August 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28910702/respiratory-atp-cost-and-benefit-of-arbuscular-mycorrhizal-symbiosis-with-nicotiana-tabacum-at-different-growth-stages-and-under-salinity
#17
Néstor Fernández Del-Saz, Antonia Romero-Munar, David Alonso, Ricardo Aroca, Elena Baraza, Jaume Flexas, Miquel Ribas-Carbo
Growth and maintenance partly depend on both respiration and ATP production during oxidative phosphorylation in leaves. Under stress, ATP is needed to maintain the accumulated biomass. ATP production mostly proceeds from the cytochrome oxidase pathway (COP), while respiration via the alternative oxidase pathway (AOP) may decrease the production of ATP per oxygen consumed, especially under phosphorus (P) limitation and salinity conditions. Symbiosis with arbuscular mycorrhizal (AM) fungi is reputed by their positive effect on plant growth under stress at mature stages of colonization; however, fungal colonization may decrease plant growth at early stages...
September 7, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28910658/postural-regulatory-strategies-during-quiet-sitting-are-affected-in-individuals-with-thoracic-spinal-cord-injury
#18
Matija Milosevic, Dany H Gagnon, Philippe Gourdou, Kimitaka Nakazawa
Thoracic spinal cord injury (SCI) can have significant negative consequences, which can affect the ability to maintain unsupported sitting. The objectives of this study were to compare postural control of individuals with high- and low-thoracic SCI to able-bodied people and evaluate the effects of upper-limb support on postural control during quiet sitting. Twenty-five individuals were recruited into: (a) high-thoracic SCI; (b) low-thoracic SCI; and (c) able-body subgroups. Participants were seated and asked to maintain a steady balance in the following postures: (1) both hands resting on thighs; (2) both arms crossed over the chest; and (3) both arms extended...
August 31, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28910656/test-retest-reliability-of-a-balance-testing-protocol-with-external-perturbations-in-young-healthy-adults
#19
Shawn M Robbins, Ryan M Caplan, Daniel I Aponte, Nancy St-Onge
External perturbations are utilized to challenge balance and mimic realistic balance threats in patient populations. The reliability of such protocols has not been established. The purpose was to examine test-retest reliability of balance testing with external perturbations. Healthy adults (n=34; mean age 23 years) underwent balance testing over two visits. Participants completed ten balance conditions in which the following parameters were combined: perturbation or non-perturbation, single or double leg, and eyes open or closed...
September 7, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28898949/efficiencies-and-mechanisms-of-zsm5-zeolites-loaded-with-cerium-iron-or-manganese-oxides-for-catalytic-ozonation-of-nitrobenzene-in-water
#20
Chunmao Chen, Xin Yan, Brandon A Yoza, Tingting Zhou, Yang Li, Yali Zhan, Qinghong Wang, Qing X Li
Discharge of industrial wastewater causes water pollution. It is therefore necessary to treat wastewater prior to discharge. Catalytic ozonation processes (COP) using ZSM5 zeolites loaded with metallic (Ce, Fe, or Mn) oxides to remove nitrobenzene from water were investigated. The total organic carbon (TOC) removal by the COP treatment with NaZSM5-38, HZSM5-38, and NaZSM5-100 were increased by 6.7%, 23.1%, and 19.8%, respectively, in comparison with single ozonation efficiency (39.2%). The loadings of Ce, Fe, or Mn oxides increased the catalytic activity relative to ZSM5 zeolites alone...
September 8, 2017: Science of the Total Environment
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