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https://www.readbyqxmd.com/read/27906369/power-coupling-between-gain-guided-index-antiguided-planar-waveguides
#1
Chih-Hsien Lai, Chang-I Hsieh
Power coupling between two gain-guided index-antiguided (GGIAG) planar waveguides is numerically investigated. The strength of coupling is found to vary periodically with the gap between the two waveguide cores, owing to the Fabry-Perot-like behavior of the gap. Moreover, the coupling length at which one waveguide has the minimum power and the coupling length at which another waveguide obtains the maximum power are different. Further investigation reveals that such a difference is attributed to the gain provided in the low-index cores...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27904794/pain-function-and-strength-outcomes-for-males-and-females-with-patellofemoral-pain-who-participate-in-either-a-hip-core-or-knee-based-rehabilitation-program
#2
Lori A Bolgla, Jennifer Earl-Boehm, Carolyn Emery, Karrie Hamstra-Wright, Reed Ferber
BACKGROUND: Hip exercise has been recommended for females with patellofemoral pain (PFP). It is unknown if males with PFP will benefit from a similar treatment strategy. HYPOTHESES/PURPOSE: The purpose of this study was to compare improvements in pain, function, and strength between males and females with PFP who participated in either a hip/core or knee rehabilitation program. The directional hypothesis was that females would respond more favorably to the hip/core rehabilitation program and males to the knee program...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27899832/development-and-application-of-a-stepwise-assessment-process-for-rational-redesign-of-sequential-skills-based-courses
#3
Casey E Gallimore, Andrea L Porter, Susanne G Barnett
Objective. To develop and apply a stepwise process to assess achievement of course learning objectives related to advanced pharmacy practice experiences (APPEs) preparedness and inform redesign of sequential skills-based courses. Design. Four steps comprised the assessment and redesign process: (1) identify skills critical for APPE preparedness; (2) utilize focus groups and course evaluations to determine student competence in skill performance; (3) apply course mapping to identify course deficits contributing to suboptimal skill performance; and (4) initiate course redesign to target exposed deficits...
October 25, 2016: American Journal of Pharmaceutical Education
https://www.readbyqxmd.com/read/27893802/the-interaction-between-zein-and-lecithin-in-ethanol-water-solution-and-characterization-of-zein-lecithin-composite-colloidal-nanoparticles
#4
Lei Dai, Cuixia Sun, Di Wang, Yanxiang Gao
Lecithin, a naturally small molecular surfactant, which is widely used in the food industry, can delay aging, enhance memory, prevent and treat diabetes. The interaction between zein and soy lecithin with different mass ratios (20:1, 10:1, 5:1, 3:1, 2:1, 1:1 and 1:2) in ethanol-water solution and characterisation of zein and lecithin composite colloidal nanoparticles prepared by antisolvent co-precipitation method were investigated. The mean size of zein-lecithin composite colloidal nanoparticles was firstly increased with the rise of lecithin concentration and then siginificantly decreased...
2016: PloS One
https://www.readbyqxmd.com/read/27893484/effects-of-pelvic-and-core-strength-training-on-high-school-cross-country-race-times
#5
Anne W Clark, Maggie K Goedeke, Rina Namvong, Derek E Rockwell, Bryan Jason Lehecka, Robert C Manske, Barbara S Smith
Effects of pelvic and core strength training on high school cross-country race times: A randomized control trial.There is only limited research examining the effect of pelvic and core strength training on running performance. Pelvic and core muscle fatigue is believed to contribute to excess motion along frontal and transverse planes which decreases efficiency in normal sagittal plane running motions. The purpose of this study was to determine if adding a six week pelvic and core strengthening program resulted in decreased race times in high school cross-country runners...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27893472/correspondence-between-physical-self-concept-and-participation-in-and-fitness-change-after-bi-weekly-body-conditioning-classes-in-sedentary-women
#6
Ulrika Aasa, Johan Paulin, Guy Madison
The aims of the study were (1) to investigate the effects of participation in low impact body conditioning classes on physical fitness in sedentary women at different ages and (2) to examine the correspondence between physical self-concept and participation in, and fitness change after, the participation. Ninety-two sedentary women (mean age 44.2 years) participated in 11-weeks of bi-weekly classes that included cardiovascular, strength, core, endurance and mobility exercises, all performed in synchrony with music...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27884105/structural-features-of-dna-that-determine-rna-polymerase-ii-core-promoter
#7
Irina A Il'icheva, Mingian V Khodikov, Maria S Poptsova, Dmitry Yu Nechipurenko, Yury D Nechipurenko, Sergei L Grokhovsky
BACKGROUND: The general structure and action of all eukaryotic and archaeal RNA polymerases machinery have an astonishing similarity despite the diversity of core promoter sequences in different species. The goal of our work is to find common characteristics of DNA region that define it as a promoter for the RNA polymerase II (Pol II). RESULTS: The profiles of a large number of physical and structural characteristics, averaged over representative sets of the Pol II minimal core promoters of the evolutionary divergent species from animals, plants and unicellular fungi were analysed...
November 25, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27882021/compressive-strength-and-the-effect-of-duration-after-photo-activation-among-dual-cure-bulk-fill-composite-core-materials
#8
Fahad Alkhudhairy, Fahim Vohra
OBJECTIVES: To assess compressive strength and effect of duration after photoactivation on the compressive strength of different dual cure bulk fill composites. METHODS: Seventy-two disc shaped (4x10mm) specimens were prepared from three dual cure bulk fill materials, ZirconCore (ZC) (n=24), MulticCore Flow (MC) (n=24) and Luxacore Dual (LC) (n=24). Half of the specimens in each material were tested for failure loads after one hour [MC1 (n=12), LC1 (n=12) & ZC1 (n=12)] and the other half in 7 days [MC7 (n=12), LC7 (n=12), ZC7 (n=12)] from photo-polymerization using the universal testing machine at a cross-head speed of 0...
September 2016: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/27865001/romosozumab-improves-bone-mass-and-strength-while-maintaining-bone-quality-in-ovariectomized-cynomolgus-monkeys
#9
Michael S Ominsky, Steven K Boyd, Aurore Varela, Jacquelin Jolette, Melanie Felx, Nancy Doyle, Nacera Mellal, Susan Y Smith, Kathrin Locher, Sabina Buntich, Ian Pyrah, Rogely W Boyce
Romosozumab (Romo), a humanized sclerostin antibody, is a bone-forming agent under development for treatment of osteoporosis. To examine the effects of Romo on bone quality, mature cynomolgus monkeys (cynos) were treated 4 months post-ovariectomy (OVX) with vehicle, 3, or 30 mg/kg Romo for 12 months, or with 30 mg/kg Romo for 6 months followed by vehicle for 6 months (30/0). Serum bone formation markers were increased by Romo during the first 6 months, corresponding to increased cancellous, endocortical, and periosteal bone formation in rib and iliac biopsies at months 3 and 6...
November 10, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27863730/psoas-muscle-area-and-length-of-stay-in-older-adults-undergoing-cardiac-operations
#10
Jesse Zuckerman, Matthew Ades, Louis Mullie, Amanda Trnkus, Jean-Francois Morin, Yves Langlois, Felix Ma, Mark Levental, José A Morais, Jonathan Afilalo
BACKGROUND: Frailty assessment can help predict which older adults will experience adverse events after cardiac surgical procedures. Low muscle mass is a core component of frailty that is suboptimally captured by self-reported weight loss; refined measures using computed tomographic (CT) images have emerged and are predictive of outcomes in noncardiac surgical procedures. The objective of this study was to evaluate the association between CT muscle area and length of stay (LOS) after cardiac surgical procedures...
November 15, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27859803/fine-tuning-of-anisotropy-barrier-by-ligand-substitution-observed-in-linear-dy2-ni2-clusters
#11
Yan Li, Qiu Shang, Yi-Quan Zhang, En-Cui Yang, Xiao-Jun Zhao
Three new heterometallic single-molecule magnets (SMMs), [Dy2 Ni2 (bipy)2 (RC6 H4 COO)10 ] [bipy=2,2'-bipyridine, R=H (1), CH3 (2), and NO2 (3)], are synthesized solvothermally with different 3-substituted benzoate ligands (RC6 H4 COO(-) ), and are characterized both structurally and magnetically. Structural analyses reveal that the three entities are structurally analogous, exhibiting an approximately linear {Dy2 Ni2 } core bridged by ten carboxylate moieties from the RC6 H4 COO(-) ligands. A noncoordinating substituent group attached on the phenyl ring results in minor geometry distortions of 1-3, but causes a significant decrease in the Mulliken atomic charge on the axially shortest O donor through inductive and/or conjugative effects...
November 16, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27858459/quantum-domain-walls-induce-incommensurate-supersolid-phase-on-the-anisotropic-triangular-lattice
#12
Xue-Feng Zhang, Shijie Hu, Axel Pelster, Sebastian Eggert
We investigate the extended hard-core Bose-Hubbard model on the triangular lattice as a function of spatial anisotropy with respect to both hopping and nearest-neighbor interaction strength. At half-filling the system can be tuned from decoupled one-dimensional chains to a two-dimensional solid phase with alternating density order by adjusting the anisotropic coupling. At intermediate anisotropy, however, frustration effects dominate and an incommensurate supersolid phase emerges, which is characterized by incommensurate density order as well as an anisotropic superfluid density...
November 4, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27852594/hip-strength-as-an-intrinsic-risk-factor-for-lateral-ankle-sprains-in-youth-soccer-players-a-3-season-prospective-study
#13
Roel De Ridder, Erik Witvrouw, Mieke Dolphens, Philip Roosen, Ans Van Ginckel
BACKGROUND: Numerous epidemiological studies have emphasized the burden of lateral ankle sprains in youth soccer players. However, no prospective study has identified intrinsic physical and modifiable risk factors for these injuries in this particular population. Although injury prevention programs in soccer incorporate proximal hip and core stability exercises, it is striking that the relationship between impaired proximal hip function and ankle sprains has not yet been prospectively investigated in youth soccer players...
November 16, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27852144/appreciative-inquiry-in-medical-education
#14
John Sandars, Deborah Murdoch-Eaton
The practice of medicine, and also medical education, typically adopts a problem-solving approach to identify "what is going wrong" with a situation. However, an alternative is Appreciative Inquiry (AI), which adopts a positive and strengths-based approach to identify "what is going well" with a situation. The AI approach can be used for the development and enhancement of the potential of both individuals and organizations. An essential aspect of the AI approach is the generative process, in which a new situation is envisioned and both individual and collective strengths are mobilized to make changes to achieve the valued future situation...
November 17, 2016: Medical Teacher
https://www.readbyqxmd.com/read/27851938/fast-motions-of-key-methyl-groups-in-amyloid-%C3%AE-fibrils
#15
Liliya Vugmeyster, Dmitry Ostrovsky, Matthew A Clark, Isaac B Falconer, Gina L Hoatson, Wei Qiang
Amyloid-β (Aβ) peptide is the major component of plaques found in Alzheimer's disease patients. Using solid-state (2)H NMR relaxation performed on selectively deuterated methyl groups, we probed the dynamics in the threefold symmetric and twofold symmetric polymorphs of native Aβ as well as the protofibrils of the D23N mutant. Specifically, we investigated the methyl groups of two leucine residues that belong to the hydrophobic core (L17 and L34) as well as M35 residues belonging to the hydrophobic interface between the cross-β subunits, which has been previously found to be water-accessible...
November 15, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27851933/sizes-of-long-rna-molecules-are-determined-by-the-branching-patterns-of-their-secondary-structures
#16
Alexander Borodavka, Surendra W Singaram, Peter G Stockley, William M Gelbart, Avinoam Ben-Shaul, Roman Tuma
Long RNA molecules are at the core of gene regulation across all kingdoms of life, while also serving as genomes in RNA viruses. Few studies have addressed the basic physical properties of long single-stranded RNAs. Long RNAs with nonrepeating sequences usually adopt highly ramified secondary structures and are better described as branched polymers. To test whether a branched polymer model can estimate the overall sizes of large RNAs, we employed fluorescence correlation spectroscopy to examine the hydrodynamic radii of a broad spectrum of biologically important RNAs, ranging from viral genomes to long noncoding regulatory RNAs...
November 15, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27849497/effect-of-lumbar-progressive-resistance-exercise-on-lumbar-muscular-strength-and-core-muscular-endurance-in-soldiers
#17
John M Mayer, John D Childs, Brett D Neilson, Henian Chen, Shane L Koppenhaver, William S Quillen
OBJECTIVES: Low back pain is common, costly, and disabling for active duty military personnel and veterans. The evidence is unclear on which management approaches are most effective. The purpose of this study was to assess the effectiveness of lumbar extensor high-intensity progressive resistance exercise (HIPRE) training versus control on improving lumbar extension muscular strength and core muscular endurance in soldiers. METHODS: A randomized controlled trial was conducted with active duty U...
November 2016: Military Medicine
https://www.readbyqxmd.com/read/27834515/how-can-a-competency-framework-for-advanced-practice-support-care
#18
Pamela Elizabeth Stanford
Aim To explore whether perception of nurse practitioners in relation to whether a competency framework for advanced practice can support their work. Method A qualitative cross-sectional design was used, embedded in an interpretative paradigm of research. A non-probability sample of eight experienced nurse practitioners took part in focus groups and answered questionnaires. A mixture of phenomenological and grounded theory approaches were used to collect the data. Findings Four major themes were identified: competency frameworks can identify individual strengths and weaknesses, they can be used to set clear goals and targets, they can improve how practice is organised, and they have the potential to limit practice in terms of narrowing boundaries...
November 10, 2016: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/27827477/water-induced-spin-crossover-behaviour-and-magneto-structural-correlation-in-octacyanotungstate-iv-based-iron-ii-complexes
#19
Rong-Min Wei, Ming Kong, Fan Cao, Jing Li, Tian-Cheng Pu, Li Yang, Xiu-Ling Zhang, You Song
A series of octacyanotungstate(iv)-based iron(ii) complexes with the general formula Fe(L)8[W(IV)(CN)8]·nH2O [L = (3-pyridyl)methanol (1, 2), 3-methylpyridine (3), (4-pyridyl)methanol (4), and 4-methylpyridine (5); n = 4 for 1, and n = 0 for 2-5] have been synthesized and characterized. Single crystal X-ray diffraction analysis reveals that the Fe(II) ions lie in the centre of the compressed [FeN6] octahedron in all complexes. Fe(II) and W(IV) ions are alternately bridged by cyano groups forming a three-dimensional (3D) bimetallic framework...
November 9, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27825906/aberrant-intra-salience-network-dynamic-functional-connectivity-impairs-large-scale-network-interactions-in-schizophrenia
#20
Xiangpeng Wang, Wenwen Zhang, Yujing Sun, Min Hu, Antao Chen
Aberrant functional interactions between several large-scale networks, especially the central executive network (CEN), the default mode network (DMN) and the salience network (SN), have been postulated as core pathophysiologic features of schizophrenia; however, the attributing factors of which remain unclear. The study employed resting-state fMRI with 77 participants (42 patients and 35 controls). We performed dynamic functional connectivity (DFC) and functional connectivity (FC) analyses to explore the connectivity patterns of these networks...
November 5, 2016: Neuropsychologia
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