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https://www.readbyqxmd.com/read/28551511/the-effects-of-foot-cooling-on-postural-muscle-responses-to-an-unexpected-loss-of-balance
#1
Oran W Ferguson, Nadia Polskaia, Craig D Tokuno
The purpose of this study was to examine the role of foot sole somatosensory information during reactive postural control. Twenty young adults (22.0±1.4y) participated in this study. Baseline skin sensitivity from the foot sole was assessed using Semmes-Weinstein monofilaments. Postural muscle responses, in the form of electromyographic (EMG) onset latencies and amplitudes, were then obtained while participants recovered their balance while standing on a moveable platform that could translate in either the forward or backward direction...
May 25, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28551434/impact-of-phosphate-solubilizing-bacteria-inoculation-methods-on-phosphorus-transformation-and-long-term-utilization-in-composting
#2
Yuquan Wei, Yue Zhao, Yuying Fan, Qian Lu, Mingxiao Li, Qingbin Wei, Yi Zhao, Zhenyu Cao, Zimin Wei
This study aimed to assess the effect of phosphate-solubilizing bacteria (PSB) application and inoculation methods on rock phosphate (RP) solubilization and bacterial community during composting. The results showed that PSB inoculation in different stages of composting, especially both in the beginning and cooling stages, not only improved the diversity and abundance of PSB and bacterial community, but also distinctly increased the content of potential available phosphorus. Redundancy analysis indicated that the combined inoculation of PSB in the initial stage with higher inoculation amount and in the cooling stage with lower inoculation amount was the best way to improve the inoculation effect and increase the solubilization and utilization of RP during composting...
May 19, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28551418/metabolomic-and-physico-chemical-approach-unravel-dynamic-regulation-of-calcium-in-sweet-cherry-fruit-physiology
#3
Michail Michailidis, Evangelos Karagiannis, Georgia Tanou, Katerina Karamanoli, Athina Lazaridou, Theodora Matsi, Athanassios Molassiotis
Calcium (Ca(2)) nutrition has a significant role in fruit physiology; however, the underlying mechanism is still unclear. In this study, fruit quality in response to CaCl2, applied via foliar sprays (Ca(2)) or/and hydro-cooling water (CaHC), was characterized in 'Lapins' cherries at harvest, just after cold storage (20 days at 0 °C) as well as after cold storage followed by 2 days at 20 °C, herein defined as shelf-life period. Data indicated that pre- and post-harvest Ca(2+) applications increased total Ca(2+) and cell wall bound Ca(2+), respectively...
May 17, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28550896/pediatric-near-drowning-events-do-they-warrant-trauma-team-activation
#4
Pranit N Chotai, Lisa Manning, Benjamin Eithun, Joshua C Ross, James W Eubanks, Chad Hamner, Ankush Gosain
BACKGROUND: The purpose of this study was to determine the incidence of traumatic injuries, factors associated with mortality, and need for pediatric trauma surgery involvement for drowning and near-drowning events in children. MATERIALS AND METHODS: An institutional review board-approved, retrospective chart review was performed at three American College of Surgeons-verified Pediatric Trauma Centers (2011-2014). Patients with International Classification of Diseases, Ninth Revision, codes or E-codes for fatal-nonfatal drowning, fall into water, accidental drowning, or submersion were included...
May 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28550269/surface-protection-from-high-energy-electrons-and-x-ray-radiation-analysis-in-tokamak-plasma
#5
A Salar Elahi, M Ghoranneviss
Plasma cooling due to hard x-ray radiation from the Runaway electrons is an important issue in tokamaks. Thus, developing effective methods to reduce the Runaway electrons and the emitted hard x-ray is also important for optimal tokamak plasma operation. In this study, we investigated the effects of external fields on hard x-ray intensity and the Magnetohydrodynamic (MHD) activity. In other words, we presented the effects of positive biased limiter and Resonant Helical Field (RHF) on the MHD fluctuations and hard x-ray emission from the Runaway electrons...
May 24, 2017: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/28549283/the-use-of-foot-pumps-compression-devices-in-the-perioperative-management-of-ankle-fractures-systematic-review-of-the-current-literature
#6
REVIEW
Rachel Clarkson, Samer S S Mahmoud, Amar Rangan, William Eardley, Paul Baker
BACKGROUND: Ankle fractures account for 9% of all fractures seen in the United Kingdom. 15,000 of these fractures undergo operative fixation each year. Soft tissue swelling impacts on timing of fixation due to fears of infection and wound dehiscence. The use of arterio-venous foot pumps (AVFP) is increasing in this population although the evidence for their efficacy is unclear. In order to address this, we present an overview of the evidence for AVFP device use following ankle fracture...
March 10, 2017: Foot
https://www.readbyqxmd.com/read/28549029/a-contemporary-approach-to-reoperative-aortic-valve-surgery-when-is-less-more
#7
Deane E Smith, Michael S Koeckert, Patrick F Vining, Elias A Zias, Eugene A Grossi, Aubrey C Galloway
OBJECTIVE: Although the benefits of minimally invasive valvular surgery are well established, the applicability of extending these techniques to reoperative aortic valve surgery is unknown. We evaluated our experience with a minimally invasive approach to this patient population. METHODS: From January 2010 to September 2015, 21 patients underwent reoperative isolated aortic valve replacement via a minimally invasive approach by a single surgeon. All patients had preoperative evaluation with computerized tomography and coronary catheterization...
May 25, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28548051/xenon-gas-field-ion-source-from-a-single-atom-tip
#8
Wei-Chiao Lai, Chun-Yueh Lin, Wei-Tse Chang, Po-Chang Li, Tsu-Yi Fu, Chia-Seng Chang, T T Tsong, Ing-Shouh Hwang
Focused ion beam (FIB) systems have become powerful diagnostic and modification tools for nanoscience and nanotechnology. Gas field ion sources (GFISs) built from atomic-size emitters offer the highest brightness among all ion sources and thus can improve the spatial resolution of FIB systems. Here we show that the Ir/W(111) single-atom tip (SAT) can emit high-brightness Xe(+) ion beams with a high current stability. The ion emission current versus extraction voltage was analyzed from 150 K up to 309 K. The optimal emitter temperature for maximum Xe(+) ion emission was ∼150 K and the reduced brightness at the Xe gas pressure of 1 × 10(-4) torr is two to three orders of magnitude higher than that of a Ga liquid metal ion source, and four to five orders of magnitude higher than that of a Xe inductively coupled plasma ion source...
May 26, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28546888/vapor-phase-synthesized-fluoroacrylate-polymer-thin-films-thermal-stability-and-structural-properties
#9
Paul Christian, Anna Maria Coclite
In this study, the thermal, chemical and structural stability of 1H,1H,2H,2H-perfluorodecyl acrylate polymers (p-PFDA) synthetized by initiated chemical vapor deposition (iCVD) were investigated. PFDA polymers are known for their interesting crystalline aggregation into a lamellar structure that induces super-hydrophobicity and oleophobicity. Nevertheless, when considering applications which involve chemical, mechanical and thermal stresses, it is important to know the limits under which the crystalline aggregation and the resulting polymer properties are stable...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28546635/local-cryotherapy-minimally-impacts-the-metabolome-and-transcriptome-of-human-skeletal-muscle
#10
Dylan C Sarver, Kristoffer B Sugg, Nathaniel P Disser, Elizabeth R Sibilsky Enselman, Tariq M Awan, Christopher L Mendias
Cryotherapy is commonly used in the treatment of skeletal muscle injuries. However, the data to support the use of cryotherapy is inconclusive, and the biochemical etiology of cryotherapy in human skeletal muscle remains largely unknown. We therefore sought to determine how a clinically-relevant dose of cryotherapy would impact the transcriptome and metabolome of skeletal muscle. Eight healthy male subjects (age 24.7 ± 4.5 years, BMI 22.2 ± 1.6) received a 15 minute bout of local cryotherapy, delivered via ice cup massage over the anterolateral thigh...
May 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28546467/post-exercise-cold-water-immersion-modulates-skeletal-muscle-pgc-1%C3%AE-mrna-expression-in-immersed-and-non-immersed-limbs-evidence-of-systemic-regulation
#11
Robert Allan, Adam Philip Sharples, Graeme L Close, Barry Drust, Sam O Shepherd, John Dutton, James P Morton, Warren Gregson
Mechanisms mediating post-exercise cold-induced increases in PGC-1α gene expression in human skeletal muscle are yet to be fully elucidated, but may involve local cooling effects on AMPK and p38 MAPK related signalling and/or increased systemic β-adrenergic stimulation. We aimed to therefore examine whether post-exercise cold-water immersion enhancement of PGC-1α mRNA is mediated through local or systemic mechanisms. Ten subjects completed acute cycling (8x5 min at ~80% peak power output) followed by seated-rest (CON) or single-leg cold-water immersion (CWI; 10 min, 8°C)...
May 25, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28546316/satellites-reveal-contrasting-responses-of-regional-climate-to-the-widespread-greening-of-earth
#12
Giovanni Forzieri, Ramdane Alkama, Diego G Miralles, Alessandro Cescatti
Changes in vegetation cover associated to the observed greening may affect several biophysical processes, whose net effects on climate are unclear. Here, we analyze remotely sensed dynamics in leaf area index (LAI) and energy fluxes to explore the associated variation in local climate. We show that the increasing trend in LAI contributed to the warming of boreal zones through a reduction of surface albedo, and to an evaporation-driven cooling in arid regions. The interplay between LAI and surface biophysics is amplified up to five times under extreme warm-dry and cold-wet years...
May 25, 2017: Science
https://www.readbyqxmd.com/read/28546161/lofty-telescope-will-survey-the-cool-universe
#13
Govert Schilling
No abstract text is available yet for this article.
May 26, 2017: Science
https://www.readbyqxmd.com/read/28545986/a-simple-field-friendly-technique-for-cryopreserving-semen-from-asian-elephants-elephas-maximus
#14
Danielle M Arnold, Charlie Gray, Terri L Roth, Sebastian Mitchell, Laura H Graham
The specific objectives of the present study were to investigate the effects of manual seeding, differing freeze and thaw rates as well as storage for 24h at 4°C prior to cryopreservation on post-thaw sperm quality in Asian elephants. Extended semen was cooled in an equitainer to 4°C, frozen in liquid nitrogen vapour at various rates with and without manual seeding or in a dry shipper and thawed at 37, 50 and 75°C. There was a significant effect of freeze rate on post-thaw motility (P<0.0001) and acrosomal integrity (P<0...
May 18, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28545948/numerical-investigation-of-mist-air-impingement-cooling-on-ribbed-blade-leading-edge-surface
#15
Qingfei Bian, Jin Wang, Yi-Tung Chen, Qiuwang Wang, Min Zeng
The working gas turbine blades are exposed to the environment of high temperature, especially in the leading-edge region. The mist/air two-phase impingement cooling has been adopted to enhance the heat transfer on blade surfaces and investigate the leading-edge cooling effectiveness. An Euler-Lagrange particle tracking method is used to simulate the two-phase impingement cooling on the blade leading-edge. The mesh dependency test has been carried out and the numerical method is validated based on the available experimental data of mist/air cooling with jet impingement on a concave surface...
May 23, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28545450/how-to-transport-veterinary-drugs-in-insulated-boxes-to-avoid-thermal-damage-by-heating-or-freezing
#16
Johannes Horak, Astrid Haberleitner, Günther Schauberger
BACKGROUND: The transport of veterinary drugs must comply with the general standards for drug storage. Although many vehicles are equipped with active heating and/or cooling devices assuring recommended storage conditions, simple insulated transport boxes are also often used. In this study, measurements for typical transport boxes were performed under laboratory conditions by the use of a climate chamber for a temperature of -20 °C and 45 °C to investigate the impact of box size, insulation material, liquid vs...
May 25, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28545338/radiofrequency-ablation-of-small-follicular-neoplasms-initial-clinical-outcomes
#17
Su Min Ha, Jin Yong Sung, Jung Hwan Baek, Dong Gyu Na, Ji-Hoon Kim, Hyunju Yoo, Ducky Lee, Dong Whan Choi
BACKGROUND: In thyroid gland, radiofrequency ablation (RFA) has been applied to both recurrent cancers and benign nodules, although, according to the American Thyroid Association (ATA) and the Korean Society of Thyroid Radiology (KSThR) guidelines, surgery is the first-line treatment for follicular neoplasm. However, it has been argued that follicular neoplasm with lower risk of malignancy can be managed by close follow-up. In this study, we evaluated the effectiveness of RFA of small follicular neoplasms, examining reductions in volume and related clinical problems, and making observations over long-term follow-up...
May 25, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28544800/reinforced-microextraction-of-polycyclic-aromatic-hydrocarbons-from-polluted-soil-samples-using-an-in-needle-coated-fiber-with-polypyrrole-graphene-oxide-nanocomposite
#18
Mina Behfar, Ali Reza Ghiasvand, Fatemeh Yazdankhah
The surface of a stainless-steel wire was platinized using electrophoretic deposition method to create a high-surface-area, porous and cohesive substrate. The platinized fiber was coated by the polypyrrole/graphene oxide nanocomposite by electropolymerization and accommodated into a stainless-steel needle to fabricate an in-needle coated fiber. The developed setup was coupled to gas chromatography with flame ionization detection and applied to extract and determine polycyclic aromatic hydrocarbons (naphthalene, fluorene, phenanthrene, fluoranthene and pyrene) in complicated solid matrices, along with reinforcement of the extraction by cooling the sorbent, using liquid carbon dioxide...
May 25, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28544671/a-common-thermal-niche-among-geographically-diverse-populations-of-the-widely-distributed-tree-species-eucalyptus-tereticornis-no-evidence-for-adaptation-to-climate-of-origin
#19
John E Drake, Angelica Vårhammar, Dushan Kumarathunge, Belinda E Medlyn, Sebastian Pfautsch, Peter B Reich, David T Tissue, Oula Ghannoum, Mark G Tjoelker
Impacts of climate warming depend on the degree to which plants are constrained by adaptation to their climate-of-origin or exhibit broad climatic suitability. We grew cool-origin, central and warm-origin provenances of Eucalyptus tereticornis in an array of common temperature environments from 18 to 35.5°C to determine if this widely distributed tree species consists of geographically contrasting provenances with differentiated and narrow thermal niches, or if provenances share a common thermal niche. The temperature responses of photosynthesis, respiration, and growth were equivalent across the three provenances, reflecting a common thermal niche despite a 2,200 km geographic distance and 13°C difference in mean annual temperature at seed origin...
May 23, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28543966/development-of-a-quantitative-assessment-method-of-pigmentary-skin-disease-using-ultraviolet-optical-imaging
#20
Onseok Lee, Sunup Park, Jaeyoung Kim, Chilhwan Oh
BACKGROUND/PURPOSE: The visual scoring method has been used as a subjective evaluation of pigmentary skin disorders. Severity of pigmentary skin disease, especially melasma, is evaluated using a visual scoring method, the MASI (melasma area severity index). This study differentiates between epidermal and dermal pigmented disease. The study was undertaken to determine methods to quantitatively measure the severity of pigmentary skin disorders under ultraviolet illumination. METHODS: The optical imaging system consists of illumination (white LED, UV-A lamp) and image acquisition (DSLR camera, air cooling CMOS CCD camera)...
May 21, 2017: Skin Research and Technology
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