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https://www.readbyqxmd.com/read/28730652/effects-of-collimator-angle-couch-angle-and-starting-phase-on-motion-tracking-dynamic-conformal-arc-therapy-4d-dcat
#1
Zhengzheng Xu, Rutao Yao, Matthew B Podgorsak, Iris Z Wang
PURPOSE: The aim of this study was to find an optimized configuration of collimator angle, couch angle, and starting tracking phase to improve the delivery performance in terms of MLC position errors, maximal MLC leaf speed, and total beam-on time of DCAT plans with motion tracking (4D DCAT). METHOD AND MATERIALS: Nontracking conformal arc plans were first created based on a single phase (maximal exhalation phase) of a respiratory motion phantom with a spherical target...
July 21, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28729829/cortex-parcellation-associated-whole-white-matter-parcellation-in-individual-subjects
#2
Patrick Schiffler, Jan-Gerd Tenberge, Heinz Wiendl, Sven G Meuth
The investigation of specific white matter areas is a growing field in neurological research and is typically achieved through the use of atlases. However, the definition of anatomically based regions remains challenging for the white matter and thus hinders region-specific analysis in individual subjects. In this article, we focus on creating a whole white matter parcellation method for individual subjects where these areas can be associated to cortex regions. This is done by combining cortex parcellation and fiber tracking data...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28729748/on-flare-cme-characteristics-from-sun-to-earth-combining-remote-sensing-image-data-with-in-situ-measurements-supported-by-modeling
#3
Manuela Temmer, Julia K Thalmann, Karin Dissauer, Astrid M Veronig, Johannes Tschernitz, Jürgen Hinterreiter, Luciano Rodriguez
We analyze the well-observed flare and coronal mass ejection (CME) from 1 October 2011 (SOL2011-10-01T09:18) covering the complete chain of effects - from Sun to Earth - to better understand the dynamic evolution of the CME and its embedded magnetic field. We study in detail the solar surface and atmosphere associated with the flare and CME using the Solar Dynamics Observatory (SDO) and ground-based instruments. We also track the CME signature off-limb with combined extreme ultraviolet (EUV) and white-light data from the Solar Terrestrial Relations Observatory (STEREO)...
2017: Solar Physics
https://www.readbyqxmd.com/read/28729707/status-stress-and-performance-in-track-and-field-athletes-during-the-european-games-in-baku-azerbaijan
#4
Benjamin Siart, Alfred Nimmerichter, Claudia Vidotto, Bernard Wallner
This study analyzes the relationship between salivary cortisol and testosterone levels and performance in track and field athletes. In addition, we analyzed the influence of status among athletes (measured based on previous athletic achievement) on hormone levels. Nineteen members of the Austrian track and field team (eleven males, eight females, 25.9 ± 3.9 years of age, 74.9 ± 20.1 kg, and 179.3 ± 10 cm) participated in this study. Data was collected during the European Games in Baku. Athletes delivered saliva samples at various time-points including morning samples and samples directly before and after the competition...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28727745/evaluation-of-tissue-displacement-and-regional-strain-in-the-achilles-tendon-using-quantitative-high-frequency-ultrasound
#5
Stijn Bogaerts, Catarina De Brito Carvalho, Lennart Scheys, Kaat Desloovere, Jan D'hooge, Frederik Maes, Paul Suetens, Koen Peers
The Achilles tendon has a unique structure-function relationship thanks to its innate hierarchical architecture in combination with the rotational anatomy of the sub-tendons from the triceps surae muscles. Previous research has provided valuable insight in global Achilles tendon mechanics, but limitations with the technique used remain. Furthermore, given the global approach evaluating muscle-tendon junction to insertion, regional differences in tendon mechanical properties might be overlooked. However, recent advancements in the field of ultrasound imaging in combination with speckle tracking have made an intratendinous evaluation possible...
2017: PloS One
https://www.readbyqxmd.com/read/28727640/no-seasonal-changes-in-cognitive-functioning-among-high-school-football-athletes-implementation-of-a-novel-electrophysiological-measure-and-standard-clinical-measures
#6
Steven P Broglio, Richelle Williams, Ashley Rettmann, Brandon Moore, James T Eckner, Sean Meehan
OBJECTIVE: To evaluate neuroelectric and cognitive function relative to a season of football participation. Cognitive and neuroelectric function declines are hypothesized to be present in football athletes. DESIGN: Observational. SETTING: Athletic fields and research laboratory. PATIENTS (OR PARTICIPANTS): Seventy-seven high school athletes (15.9 + 0.9 years, 178.6 + 7.2 cm, 74.4 + 14.7 kg, and 0.8 + 0.8 self-reported concussions) participating in football (n = 46) and noncontact sports (n = 31)...
July 14, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28724674/mission-health-partners-a-community-based-social-determinants-driven-accountable-care-organization
#7
Robert Fields
Mission Health Partners Accountable Care Organization's population health strategy is based on the idea that improvements in outcomes are best achieved by addressing social determinants gaps for its members. Our network of service providers and a process for referrals and tracking streamlines the limited resources available to meet these needs.
July 2017: North Carolina Medical Journal
https://www.readbyqxmd.com/read/28724088/in-vitro-and-in-vivo-assessment-of-aqueously-extractable-estrogens-in-poultry-manure-after-pilot-scale-composting
#8
Kirsten M Hammett, Elizabeth J Mullin, Diana S Aga, Gary K Felton, Daniel J Fisher, Lance T Yonkos
Poultry manure contains free and conjugated forms of the natural estrogens 17β-estradiol and estrone, which can be transported to receiving waters via runoff when land-applied. Previous studies have demonstrated estrogens in runoff from poultry manure-amended fields but have not tracked changes in estrogenicity within this water over time. Microbial conversion of conjugated estrogens (a major portion of water-extractable estrogens) to parent forms may result in temporary increases in estrogenicity in natural water bodies...
May 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28721851/development-and-evaluation-of-a-multiple-locus-variable-number-tandem-repeats-analysis-assay-for-subtyping-salmonella-typhi-strains-from-sub-saharan-africa
#9
Nomsa P Tau, Anthony M Smith, John R Wain, Andrew Tarupiwa, Kalpy J Coulibaly, Karen H Keddy, Germs-Sa
PURPOSE: Molecular epidemiological investigations of the highly clonal Salmonella enterica subspecies enterica serovar Typhi (S. Typhi) are important in outbreak detection and in tracking disease transmission. In this study, we developed and evaluated a multiple-locus variable-number tandem-repeats (VNTR) analysis (MLVA) assay for characterization of S. Typhi isolates from sub-Saharan Africa. METHODOLOGY: Twelve previously reported VNTR loci were evaluated and an MLVA assay consisting of five polymorphic loci was adopted...
July 18, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28721177/antiretroviral-therapy-outcomes-among-hiv-infected-clients-in-gweru-city-zimbabwe-2006-2011-a-cohort-analysis
#10
Gerald Shambira, Notion Tafara Gombe, Casey Daniel Hall, Meeyoung Mattie Park, Joseph Asamoah Frimpong
The government of Zimbabwe began providing antiretroviral therapy (ART) to People Living with HIV/AIDS (PLHIV) in public institutions in 2004. In Midlands province two clinics constituted the most active HIV care service points, with patients being followed up through a comprehensive patient monitoring and tracking system which captured specific patient variables and outcomes over time. The data from 2006 to 2011 were subjected to analysis to answer specific research questions and this case study is based on that analysis...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28720730/drought-stress-results-in-a-compartment-specific-restructuring-of-the-rice-root-associated-microbiomes
#11
Christian Santos-Medellín, Joseph Edwards, Zachary Liechty, Bao Nguyen, Venkatesan Sundaresan
Plant roots support complex microbial communities that can influence plant growth, nutrition, and health. While extensive characterizations of the composition and spatial compartmentalization of these communities have been performed in different plant species, there is relatively little known about the impact of abiotic stresses on the root microbiota. Here, we have used rice as a model to explore the responses of root microbiomes to drought stress. Using four distinct genotypes, grown in soils from three different fields, we tracked the drought-induced changes in microbial composition in the rhizosphere (the soil immediately surrounding the root), the endosphere (the root interior), and unplanted soils...
July 18, 2017: MBio
https://www.readbyqxmd.com/read/28720039/the-revamp-trial-to-evaluate-hiv-resistance-testing-in-sub-saharan-africa-a-case-study-in-clinical-trial-design-in-resource-limited-settings-to-optimize-effectiveness-and-cost-effectiveness-estimates
#12
Mark J Siedner, Mwebesa B Bwana, Mahomed-Yunus S Moosa, Michelle Paul, Selvan Pillay, Suzanne McCluskey, Isaac Aturinda, Kevin Ard, Winnie Muyindike, Pravikrishnen Moodley, Jaysingh Brijkumar, Tamlyn Rautenberg, Gavin George, Brent Johnson, Rajesh T Gandhi, Henry Sunpath, Vincent C Marconi
BACKGROUND: In sub-Saharan Africa, rates of sustained HIV virologic suppression remain below international goals. HIV resistance testing, while common in resource-rich settings, has not gained traction due to concerns about cost and sustainability. OBJECTIVE: We designed a randomized clinical trial to determine the feasibility, effectiveness, and cost-effectiveness of routine HIV resistance testing in sub-Saharan Africa. APPROACH: We describe challenges common to intervention studies in resource-limited settings, and strategies used to address them, including: (1) optimizing generalizability and cost-effectiveness estimates to promote transition from study results to policy; (2) minimizing bias due to patient attrition; and (3) addressing ethical issues related to enrollment of pregnant women...
July 18, 2017: HIV Clinical Trials
https://www.readbyqxmd.com/read/28719056/tracking-salience-in-young-people-a-psychometric-field-test-of-the-aberrant-salience-inventory-asi
#13
Andrea Raballo, David C Cicero, John G Kerns, Sara Sanna, Mirra Pintus, Ingrid Agartz, Elisa Pintus, Irene Corrias, Veronica Lai, Donatella Rita Petretto, Mauro G Carta, Antonio Preti
AIM: To explore the prevalence of Aberrant Salience (AS, an alleged experiential feature of psychosis-proneness) in Italian young people and corroborate the transcultural validity of the Aberrant Salience Inventory (ASI). METHODS: Young adults attending an Italian university (n = 649) underwent serial evaluations with the ASI together with psychometric proxies for help seeking General Health Questionnaire and attenuated positive and negative symptoms Schizotypal Personality Questionnaire (SPQ)...
July 18, 2017: Early Intervention in Psychiatry
https://www.readbyqxmd.com/read/28719007/validating-activity-indices-from-camera-traps-for-commensal-rodents-and-other-wildlife-in-and-around-farm-buildings
#14
Mark Lambert, Fiona Bellamy, Richard Budgey, Rebecca Callaby, Julia Coats, Janet Talling
BACKGROUND: Indices of rodent activity are used as indicators of population change during field evaluation of rodenticides. We investigated the potential for using camera traps to determine activity indices for commensal rodents living in and around farm buildings, and sought to compare these indices against previously calibrated survey methods. RESULTS: We recorded 41, 263 images of 23 species including Norway rats (Rattus norvegicus Berk.) and house mice (Mus musculus L...
July 18, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28715504/megalosauripus-transjuranicus-ichnosp-nov-a-new-late-jurassic-theropod-ichnotaxon-from-nw-switzerland-and-implications-for-tridactyl-dinosaur-ichnology-and-ichnotaxomy
#15
Novella L Razzolini, Matteo Belvedere, Daniel Marty, Géraldine Paratte, Christel Lovis, Marielle Cattin, Christian A Meyer
A new ichnospecies of a large theropod dinosaur, Megalosauripus transjuranicus, is described from the Reuchenette Formation (Early-Late Kimmeridgian, Late Jurassic) of NW Switzerland. It is based on very well-preserved and morphologically-distinct tracks (impressions) and several trackways, including different preservational types from different tracksites and horizons. All trackways were excavated along federal Highway A16 near Courtedoux (Canton Jura) and systematically documented in the field including orthophotos and laserscans...
2017: PloS One
https://www.readbyqxmd.com/read/28715386/live-cell-imaging-of-platelet-degranulation-and-secretion-under-flow
#16
Arjan D Barendrecht, Johan J F Verhoef, Silvia Pignatelli, Gerard Pasterkamp, Harry F G Heijnen, Coen Maas
Blood platelets are essential players in hemostasis, the formation of thrombi to seal vascular breaches. They are also involved in thrombosis, the formation of thrombi that occlude the vasculature and injure organs, with life-threatening consequences. This motivates scientific research on platelet function and the development of methods to track cell-biological processes as they occur under flow conditions. A variety of flow models are available for the study of platelet adhesion and aggregation, two key phenomena in platelet biology...
July 10, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28713471/assessment-of-specificity-of-the-badcamp-agility-test-for-badminton-players
#17
Luiz de França Bahia Loureiro, Mário Oliveira Costa Dias, Felipe Couto Cremasco, Maicon Guimarães da Silva, Paulo Barbosa de Freitas
The Badcamp agility test was created to evaluate agility of badminton players. The Badcamp is a valid and reliable test, however, a doubt about the need for the use of this test exists as simpler tests could provide similar information about agility in badminton players. Thus, the aim of this study was to examine the specificity of the Badcamp, comparing the performance of badminton players and athletes from other sports in the Badcamp and the shuttle run agility test (SRAT). Sixty-four young male and female athletes aged between 14 and 16 years participated in the study...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28713357/extensively-drug-resistant-klebsiella-pneumoniae-causing-nosocomial-bloodstream-infections-in-china-molecular-investigation-of-antibiotic-resistance-determinants-informing-therapy-and-clinical-outcomes
#18
Wenzi Bi, Haiyang Liu, Rhys A Dunstan, Bin Li, Von Vergel L Torres, Jianming Cao, Lijiang Chen, Jonathan J Wilksch, Richard A Strugnell, Trevor Lithgow, Tieli Zhou
The rise in diversity of antimicrobial resistance phenotypes seen in Klebsiella pneumoniae is becoming a serious antibiotic management problem. We sought to investigate the molecular characteristics and clinical implications of extensively drug-resistant (XDR) K. pneumoniae isolated from different nosocomial bloodstream infections (BSIs) patients from July 2013 to November 2015. Even in combination treatment, meropenem did not protect against mortality of BSIs patients (P = 0.015). In contrast, tigecycline in combination with other antimicrobial agents significantly protected against mortality (P = 0...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28710933/measurement-of-neutron-dose-in-the-compensator-imrt-treatment
#19
Abbas Rezaian, Hassan Ali Nedaie, Nooshin Banaee
A radiation treatment delivery technique, intensity modulated radiation therapy (IMRT), has found widespread use in the treatment of cancers. One of IMRT implementing methods is IMRT compensator based, which the modulation are done by high Z materials. When photons with energies higher than 8MV interact with high Z material in path, Photoneutrons are produced. In this study, the effect of compensator on photoneutron production was investigated. The Monte Carlo code MCNPX was used to calculate the neutron dose equivalent as a function of the depth in phantom with and without compensator...
June 27, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28710455/retrieving-precise-three-dimensional-deformation-on-the-2014-m6-0-south-napa-earthquake-by-joint-inversion-of-multi-sensor-sar
#20
Min-Jeong Jo, Hyung-Sup Jung, Sang-Ho Yun
We reconstructed the three-dimensional (3D) surface displacement field of the 24 August 2014 M6.0 South Napa earthquake using SAR data from the Italian Space Agency's COSMO-SkyMed and the European Space Agency's Sentinel-1A satellites. Along-track and cross-track displacements produced with conventional SAR interferometry (InSAR) and multiple-aperture SAR interferometry (MAI) techniques were integrated to retrieve the east, north, and up components of surface deformation. The resulting 3D displacement maps clearly delineated the right-lateral shear motion of the fault rupture with a maximum surface displacement of approximately 45 cm along the fault's strike, showing the east and north components of the trace particularly clearly...
July 14, 2017: Scientific Reports
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