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Strength and conditioning

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https://www.readbyqxmd.com/read/28732036/an-accurate-coarse-grained-model-for-chitosan-polysaccharides-in-aqueous-solution
#1
Levan Tsereteli, Andrea Grafmüller
Computational models can provide detailed information about molecular conformations and interactions in solution, which is currently inaccessible by other means in many cases. Here we describe an efficient and precise coarse-grained model for long polysaccharides in aqueous solution at different physico-chemical conditions such as pH and ionic strength. The Model is carefully constructed based on all-atom simulations of small saccharides and metadynamics sampling of the dihedral angles in the glycosidic links, which represent the most flexible degrees of freedom of the polysaccharides...
2017: PloS One
https://www.readbyqxmd.com/read/28731981/technology-in-strength-and-conditioning-assessing-bodyweight-squat-technique-with-wearable-sensors
#2
Martin A OʼReilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian M Caulfield
O'Reilly, MA, Whelan, DF, Ward, TE, Delahunt, E, and Caulfield, BM. Technology in strength and conditioning: assessing bodyweight squat technique with wearable sensors. J Strength Cond Res 31(8): 2303-2312, 2017-Strength and conditioning (S&C) coaches offer expert guidance to help those they work with achieve their personal fitness goals. However, it is not always practical to operate under the direct supervision of an S&C coach and consequently individuals are often left training without expert oversight. Recent developments in inertial measurement units (IMUs) and mobile computing platforms have allowed for the possibility of unobtrusive motion tracking systems and the provision of real-time individualized feedback regarding exercise performance...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28731832/effects-of-cervical-high-velocity-low-amplitude-techniques-on-range-of-motion-strength-performance-and-cardiovascular-outcomes-a-review
#3
Xabier Galindez-Ibarbengoetxea, Igor Setuain, Lars L Andersen, Robinson Ramírez-Velez, Miriam González-Izal, Andoni Jauregi, Mikel Izquierdo
BACKGROUND: Cervical high-velocity low-amplitude (HVLA) manipulation technique is among the oldest and most frequently used chiropractic manual therapy, but the physiologic and biomechanics effects were not completely clear. OBJECTIVE: This review aims to describe the effects of cervical HVLA manipulation techniques on range of motion, strength, and cardiovascular performance. METHODS/DESIGN: A systematic search was conducted of the electronic databases from January 2000 to August 2016: PubMed (n = 131), ScienceDirect (n = 101), Scopus (n = 991), PEDro (n = 33), CINAHL (n = 884), and SciELO (n = 5)...
July 21, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28731734/determining-potentials-of-zero-charge-of-metal-electrodes-versus-the-standard-hydrogen-electrode-from-density-functional-theory-based-molecular-dynamics
#4
Jiabo Le, Marcella Iannuzzi, Angel Cuesta, Jun Cheng
We develop a computationally efficient scheme to determine the potentials of zero charge (PZC) of metal-water interfaces with respect to the standard hydrogen electrode. We calculate the PZC of Pt(111), Au(111), Pd(111) and Ag(111) at a good accuracy using this scheme. Moreover, we find that the interface dipole potentials are almost entirely caused by charge transfer from water to the surfaces, the magnitude of which depends on the bonding strength between water and the metals, while water orientation hardly contributes at the PZC conditions...
July 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28730996/correspondence-between-the-electronic-structure-and-phase-separation-in-a-k-doped-fese-system
#5
Chen Liu, Jia Li Zhao, Jia-Ou Wang, Hai-Jie Qian, Rui Wu, Huan-Hua Wang, Nian Zhang, Kurash Ibrahim
Phase separated potassium intercalated FeSe thin films have been synthesized by pulsed laser deposition (PLD). The coexistence of FeSe phase and 245 phase was investigated both by x-ray photoemission spectroscopy (XPS) and X-ray diffraction (XRD). The volume ratio of these two phases is sensitive to temperatures and amount of extra potassium dosing. The XPS and ultraviolet photoelectron spectroscopy (UPS) results indicated that these two phases shows the different hybridization strength between adjacent Fe layer and Se layer...
July 21, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28730888/preoperative-exercise-training-prevents-functional-decline-after-lung-resection-surgery-a-randomized-single-blind-controlled-trial
#6
Raquel Sebio García, Maria Isabel Yáñez-Brage, Esther Giménez Moolhuyzen, Marta Salorio Riobo, Ana Lista Paz, Jose María Borro Mate
OBJECTIVES: To investigate the effects of a preoperative pulmonary rehabilitation programme in patients with lung cancer undergoing video-assisted thoracic surgery. DESIGN: Randomized, single-blind controlled trial. SETTING: Teaching hospital. SUBJECTS: Patients with suspected or confirmed lung cancer undergoing video-assisted thoracic surgery. INTERVENTION: Participants were randomized to either a prehabilitation group or a control group...
August 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28730344/bearing-fruit-flower-removal-reveals-the-trade-offs-associated-with-high-reproductive-effort-for-lowbush-blueberry
#7
Alex W Bajcz, Francis A Drummond
Past studies have shown that taxa from disparate groups often respond similarly to reduced reproductive effort. These common responses imply that high reproductive effort trades off with a consistent set of other life functions for most angiosperms, albeit modulated by their growth form and life history. However, many questions remain about reproductive trade-offs in plants, including just how many other life functions they involve, how diverse these functions may be, and how the severity of these trade-offs may vary through time...
July 20, 2017: Oecologia
https://www.readbyqxmd.com/read/28730206/evaluation-of-dextran-ethylene-glycol-hydrogel-films-for-giant-unilamellar-lipid-vesicle-production-and-their-application-for-the-encapsulation-of-polymersomes
#8
Nestor Lopez Mora, Yue Gao, M Gertrude Gutierrez, Justin Peruzzi, Ivan Bakker, Ruud J R W Peters, Bianka Siewert, Sylvestre Bonnet, Roxanne E Kieltyka, Jan C M van Hest, Noah Malmstadt, Alexander Kros
Giant Unilamellar Vesicles (GUVs) prepared from phospholipids are becoming popular membrane model systems for use in biophysical studies. The quality, size and yield of GUVs depend on the preparation method used to obtain them. In this study, hydrogels consisting of dextran polymers crosslinked by poly(ethylene glycol) (DexPEG) were used as hydrophilic frameworks for the preparation of vesicle suspensions under physiological ionic strength conditions. A comparative study was conducted using hydrogels with varied physicochemical properties to evaluate their performance for GUV production...
July 21, 2017: Soft Matter
https://www.readbyqxmd.com/read/28729713/tunable-uptake-release-mechanism-of-protein-microgel-particles-in-biomimicking-environment
#9
A Pepe, P Podesva, G Simone
Microgels are intra-molecular crosslinked macromolecules that can be used as vehicles to deliver and release drugs at the point-of-need in the patient's body. Here, gelatin microgels were formed from microfluidics droplets, stabilised by aldehydes and frozen into a spheroidal shape. Microgel morphology and response to external stimuli were characterised. It was found that the behaviour of the spheroidal microgels was sensitive to both pH and ionic strength and that the distribution of charges into the microgels affected the behaviour of swelling and uptake...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729671/linking-rheology-and-printability-for-dense-and-strong-ceramics-by-direct-ink-writing
#10
Amin M'Barki, Lydéric Bocquet, Adam Stevenson
Direct ink writing of dense and strong ceramic objects remains an important open challenge. We develop a universal dimensionless criterion for printing such objects. Boehmite, an Al2O3 precursor, was used to assess the rheological properties leading to dense structures in ceramics manufactured by direct ink writing. Boehmite suspensions undergo time dependent gelation, thus providing a rheological laboratory of flow behaviours that can be correlated with printability requirements. We measured the evolution of rheological properties over several days and quantified the deformation of simple printed shapes at different aging times...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729441/switch-independent-task-representations-in-frontal-and-parietal-cortex
#11
Lasse S Loose, David Wisniewski, Marco Rusconi, Thomas Goschke, John-Dylan Haynes
Alternating between two tasks is effortful and impairs performance. Previous functional magnetic resonance imaging (fMRI) studies have found increased activity in fronto-parietal cortex when task switching is required. One possibility is that the additional control demands for switch trials are met by strengthening task representations in the human brain. Alternatively, on switch trials the residual representation of the previous task might impede the buildup of a neural task representation. This would predict weaker task representations on switch trials, thus also explaining the performance costs...
July 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28728996/conditions-for-success-of-engineered-underdominance-gene-drive-systems
#12
Matthew P Edgington, Luke S Alphey
Engineered underdominance is one of a number of different gene drive strategies that have been proposed for the genetic control of insect vectors of disease. Here we model a two-locus engineered underdominance based gene drive system that is based on the concept of mutually suppressing lethals. In such a system two genetic constructs are introduced, each possessing a lethal element and a suppressor of the lethal at the other locus. Specifically, we formulate and analyse a population genetics model of this system to assess when different combinations of release strategies (i...
July 17, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28728463/perceived-accessibility-to-services-and-sites-among-israeli-older-adults
#13
Adi Vitman-Schorr, Liat Ayalon, Rabia Khalaila
OBJECTIVE: To explore the direct and indirect effects of settlement type (rural-kibbutz vs. urban mid-size cities) on perceived accessibility by sociospatial factors: (a) connection to the living area, (b) familiarity with the living area, (c) social participation, and (d) perceived safety of the living area. METHOD: A convenience sample of 279 older adults aged 65 and older was interviewed. Using bootstrapping, we tested the strength and significance of the conditional indirect effects of four simultaneous mediators of the relationship between settlement type and perceived accessibility...
July 1, 2017: Journal of Applied Gerontology: the Official Journal of the Southern Gerontological Society
https://www.readbyqxmd.com/read/28727912/multivariate-analysis-for-quantification-of-plutonium-iv-in-nitric-acid-based-on-absorption-spectra
#14
Amanda M Lines, Susan R Adami, Sergey I Sinkov, Gregg J Lumetta, Samuel A Bryan
Development of more effective, reliable, and fast methods for monitoring process streams is a growing opportunity for analytical applications. Many fields can benefit from on-line monitoring, including the nuclear fuel cycle where improved methods for monitoring radioactive materials will facilitate maintenance of proper safeguards and ensure safe and efficient processing of materials. On-line process monitoring with a focus on optical spectroscopy can provide a fast, non-destructive method for monitoring chemical species...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28727871/biosimilars-in-oncology-in-the-united-states-a-review
#15
Chadi Nabhan, Sandeep Parsad, Anthony R Mato, Bruce A Feinberg
Importance: Biosimilars are biological medicines that contain a highly similar version of the active substance of an already approved biologic reference product. The availability of biosimilars might provide an opportunity to lower health care expenditures as a result of the inherent price competition with their reference product. Understanding how biosimilar cancer drugs are regulated, approved, and paid for, as well as their impact in a value-based care environment, is essential for physicians and other stakeholders in oncology...
July 20, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28727724/grandmothering-and-cognitive-resources-are-required-for-the-emergence-of-menopause-and-extensive-post-reproductive-lifespan
#16
Carla Aimé, Jean-Baptiste André, Michel Raymond
Menopause, the permanent cessation of ovulation, occurs in humans well before the end of the expected lifespan, leading to an extensive post-reproductive period which remains a puzzle for evolutionary biologists. All human populations display this particularity; thus, it is difficult to empirically evaluate the conditions for its emergence. In this study, we used artificial neural networks to model the emergence and evolution of allocation decisions related to reproduction in simulated populations. When allocation decisions were allowed to freely evolve, both menopause and extensive post-reproductive life-span emerged under some ecological conditions...
July 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28727209/a-dual-flip-angle-3d-bssfp-magnetization-transfer-like-method-to-differentiate-between-recent-and-old-myocardial-infarction
#17
Philippe Germain, Soraya El Ghannudi, Aissam Labani, Mi Y Jeung, Afshin Gangi, Patrick Ohlmann, Catherine Roy
BACKGROUND: Magnetic resonance imaging (MRI) tissue signal is modulated by magnetization transfer (MT) phenomena, intrinsically induced by balanced steady-state free precession (bSSFP) imaging. PURPOSE: To investigate the possible value of such a MT-like bSSFP approach in two clinical settings involving focal myocardial lesions highligthed by late gadolinium enhancement (LGE+): edema induced by recent myocardial infarction (MI) and fibrotic scar related to chronic infarction...
July 20, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28726887/standard-and-rapid-scan-infrared-spectroscopic-studies-of-o-xylene-transformations-in-terms-of-pore-arrangement-of-10-ring-zeolites-2d-cos-analysis
#18
Kinga Gołąbek, Karolina A Tarach, Kinga Góra-Marek
This study attempts to offer an insight into o-xylene isomerization process in terms of steric constraints of 10-ring zeolites. The zeolites under investigation, i.e. ZSM-5, IM-5 and TNU-9, have purely microporous structures and crystals with the same shape and offer comparable protonic functionality, both in manner of amount and strength of Si(OH)Al groups. Under these conditions, micropore topology is recognised to deliver differentiated catalytic performance of each zeolitic structure. Moreover, 10-ring zeolites of reduced dimensionality, i...
July 20, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28726884/lithium-dendrite-growth-mechanisms-in-polymer-electrolytes-and-prevention-strategies
#19
Pallab Barai, Kenneth Higa, Venkat Srinivasan
Future lithium-ion batteries must use lithium metal anodes to fulfill the demands of high energy density applications with the potential to enable affordable electric cars with 350-mile range. However, dendrite growth during charging prevents the commercialization of this technology. It has been demonstrated that the presence of a compressive mechanical stress field around a dendritic protrusion prevents growth. Several techniques based on this concept, such as protective layers, externally applied pressure and solid electrolytes have been investigated by other researchers...
July 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28726695/a-combined-reed-bed-freezing-bed-technology-for-septage-treatment-and-reuse-in-cold-climate-regions
#20
C Kinsley, K Kennedy, A Crolla
A combined reed bed-freezing bed (RB-FB) technology was effective at treating septage under Canadian climatic conditions over a 5-year period with average loading rates of 82-104 kg TS/m(2)/y. Varying hydraulic and solid loading rates as well as the increasing sludge cake with time had little to no effect on treatment efficiency, with almost complete removal of organic matter, solids, heavy metals and nutrients. Filtrate concentrations varied significantly between the freeze-thaw and growing seasons for many parameters, although the differences were not important from a treatment or reuse perspective with filtrate quality similar to a low to medium strength domestic wastewater...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
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