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Chris Powers

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https://www.readbyqxmd.com/read/28336563/complex-multifault-rupture-during-the-2016-mw-7-8-kaik%C3%A5-ura-earthquake-new-zealand
#1
Ian J Hamling, Sigrun Hreinsdóttir, Kate Clark, John Elliott, Cunren Liang, Eric Fielding, Nicola Litchfield, Pilar Villamor, Laura Wallace, Tim J Wright, Elisabetta D'Anastasio, Stephen Bannister, David Burbidge, Paul Denys, Paula Gentle, Jamie Howarth, Christof Mueller, Neville Palmer, Chris Pearson, William Power, Philip Barnes, David J A Barrell, Russ Van Dissen, Robert Langridge, Tim Little, Andrew Nicol, Jarg Pettinga, Julie Rowland, Mark Stirling
On 14th November 2016, the northeastern South Island of New Zealand was struck by a major Mw 7.8 earthquake. Field observations, in conjunction with InSAR, GPS, and seismology reveal this to be one of the most complex earthquakes ever recorded. The rupture propagated northward for more than 170 km along both mapped and unmapped faults, before continuing offshore at its northeastern extent. Geodetic and field observations reveal surface ruptures along at least 12 major faults, including possible slip along the southern Hikurangi subduction interface, extensive uplift along much of the coastline and widespread anelastic deformation including the ~8 m uplift of a fault-bounded block...
March 23, 2017: Science
https://www.readbyqxmd.com/read/28332636/significantly-enhanced-energy-storage-density-by-modulating-the-aspect-ratio-of-batio3-nanofibers
#2
Dou Zhang, Xuefan Zhou, James Roscow, Kechao Zhou, Lu Wang, Hang Luo, Chris R Bowen
There is a growing need for high energy density capacitors in modern electric power supplies. The creation of nanocomposite systems based on one-dimensional nanofibers has shown great potential in achieving a high energy density since they can optimize the energy density by exploiting both the high permittivity of ceramic fillers and the high breakdown strength of the polymer matrix. In this paper, BaTiO3 nanofibers (NFs) with different aspect ratio were synthesized by a two-step hydrothermal method and the permittivity and energy storage of the P(VDF-HFP) nanocomposites were investigated...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28329279/performance-of-hospitals-according-to-the-esc-acca-quality-indicators-and-30-day-mortality-for-acute-myocardial-infarction-national-cohort-study-using-the-united-kingdom-myocardial-ischaemia-national-audit-project-minap-register
#3
Owen Bebb, Marlous Hall, Keith A A Fox, Tatendashe B Dondo, Adam Timmis, Hector Bueno, François Schiele, Chris P Gale
Aims: To investigate the application of the European Society of Cardiology Acute Cardiovascular Care Association quality indicators (QI) for acute myocardial infarction for the study of hospital performance and 30-day mortality. Methods and results: National cohort study (n = 118,075 patients, n = 211 hospitals, MINAP registry), 2012-13. Overall, 16 of the 20 QIs could be calculated. Eleven QIs had a significant inverse association with GRACE risk adjusted 30-day mortality (all P < 0...
February 20, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28317276/important-considerations-in-lesion-symptom-mapping-illustrations-from-studies-of-word-comprehension
#4
Hinna Shahid, Rajani Sebastian, Tatiana T Schnur, Taylor Hanayik, Amy Wright, Donna C Tippett, Julius Fridriksson, Chris Rorden, Argye E Hillis
Lesion-symptom mapping is an important method of identifying networks of brain regions critical for functions. However, results might be influenced substantially by the imaging modality and timing of assessment. We tested the hypothesis that brain regions found to be associated with acute language deficits depend on (1) timing of behavioral measurement, (2) imaging sequences utilized to define the "lesion" (structural abnormality only or structural plus perfusion abnormality), and (3) power of the study. We studied 191 individuals with acute left hemisphere stroke with MRI and language testing to identify areas critical for spoken word comprehension...
March 20, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28300572/the-potential-role-of-aspiration-in-the-asthmatic-airway
#5
Eoin B Hunt, Chris Ward, Stephen Power, Ashley Sullivan, Jeffrey Pearson, Susan Lapthorne, Paul M O'Byrne, Joseph Eustace, Barry J Plant, Michael M Maher, John MacSharry, Desmond M Murphy
BACKGROUND: Many asthmatics remain sub-optimally controlled despite current treatments. Reasons include comorbidities that could aggravate asthma, including gastro-esophageal reflux (GER). We aimed to investigate whether aspiration occurs in asthmatic patients and if so does it correlate with asthma control. METHODS: Patients had ACQ-7, FeNO, and spirometry performed to characterize their level of asthma control. Barium swallow with provocation was performed to assess for predisposition to aspiration...
March 11, 2017: Chest
https://www.readbyqxmd.com/read/28283424/modelling-plankton-ecosystems-in-the-meta-omics-era-are-we-ready
#6
REVIEW
Krzysztof Franciszek Stec, Luigi Caputi, Pier Luigi Buttigieg, Domenico D'Alelio, Federico Matias Ibarbalz, Matthew B Sullivan, Samuel Chaffron, Chris Bowler, Maurizio Ribera d'Alcalà, Daniele Iudicone
Recent progress in applying meta-omics approaches to the study of marine ecosystems potentially allows scientists to study the genetic and functional diversity of plankton at an unprecedented depth and with enhanced precision. However, while a range of persistent technical issues still need to be resolved, a much greater obstacle currently preventing a complete and integrated view of the marine ecosystem is the absence of a clear conceptual framework. Herein, we discuss the knowledge that has thus far been derived from conceptual and statistical modelling of marine plankton ecosystems, and illustrate the potential power of integrated meta-omics approaches in the field...
March 7, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28268856/covariance-based-outlier-detection-with-feature-selection
#7
Chris E Zwilling, Michelle Y Wang
The present covariance based outlier detection algorithm selects from a candidate set of feature vectors that are best at identifying outliers. Features extracted from biomedical and health informatics data can be more informative in disease assessment and there are no restrictions on the nature and number of features that can be tested. But an important challenge for an algorithm operating on a set of features is for it to winnow the effective features from the ineffective ones. The powerful algorithm described in this paper leverages covariance information from the time series data to identify features with the highest sensitivity for outlier identification...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28262725/a-microrna-initiated-dnazyme-motor-operating-in-living-cells
#8
Hanyong Peng, Xing-Fang Li, Hongquan Zhang, X Chris Le
Synthetic DNA motors have great potential to mimic natural protein motors in cells but the operation of synthetic DNA motors in living cells remains challenging and has not been demonstrated. Here we report a DNAzyme motor that operates in living cells in response to a specific intracellular target. The whole motor system is constructed on a 20 nm gold nanoparticle (AuNP) decorated with hundreds of substrate strands serving as DNA tracks and dozens of DNAzyme molecules each silenced by a locking strand. Intracellular interaction of a target molecule with the motor system initiates the autonomous walking of the motor on the AuNP...
March 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28258777/multiple-risk-behavior-interventions-meta-analyses-of-rcts
#9
REVIEW
Nick Meader, Kristelle King, Kath Wright, Hilary M Graham, Mark Petticrew, Chris Power, Martin White, Amanda J Sowden
CONTEXT: Multiple risk behaviors are common and associated with developing chronic conditions such as heart disease, cancer, or Type 2 diabetes. A systematic review, meta-analysis, and meta-regression of the effectiveness of multiple risk behavior interventions was conducted. EVIDENCE ACQUISITION: Six electronic databases including MEDLINE, EMBASE, and PsycINFO were searched to August 2016. RCTs of non-pharmacologic interventions in general adult populations were selected...
February 28, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28256397/the-effects-of-a-combined-static-dynamic-stretching-protocol-on-athletic-performance-in-elite-gaelic-footballers-a-randomised-controlled-crossover-trial
#10
Martin Loughran, Philip Glasgow, Chris Bleakley, Joseph McVeigh
OBJECTIVES: To determine the effect of three different static-dynamic stretching protocols on sprint and jump performance in Gaelic footballers. DESIGN: Double-blind, controlled, crossover trial. SETTING: Sports Institute research environment. PARTICIPANTS: Seventeen male elite level Gaelic footballers, aged 18-30 years, completed three stretching protocols. MAIN OUTCOME MEASURES: Athletic performance was measured by countermovement jump height and power, and timed 10 m, 20 m, and 40 m sprints...
December 1, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28239628/cubic-meter-volume-optical-coherence-tomography
#11
Zhao Wang, Benjamin Potsaid, Long Chen, Chris Doerr, Hsiang-Chieh Lee, Torben Nielson, Vijaysekhar Jayaraman, Alex E Cable, Eric Swanson, James G Fujimoto
Optical coherence tomography (OCT) is a powerful three-dimensional (3D) imaging modality with micrometer-scale axial resolution and up to multi-GigaVoxel/s imaging speed. However, the imaging range of high-speed OCT has been limited. Here, we report 3D OCT over cubic meter volumes using a long coherence length, 1310 nm vertical-cavity surface-emitting laser and silicon photonic integrated circuit dual-quadrature receiver technology combined with enhanced signal processing. We achieved 15 µm depth resolution for tomographic imaging at a 100 kHz axial scan rate over a 1...
December 2016: Optica
https://www.readbyqxmd.com/read/28236806/test-treatment-rcts-are-susceptible-to-bias-a-review-of-the-methodological-quality-of-randomized-trials-that-evaluate-diagnostic-tests
#12
Lavinia Ferrante di Ruffano, Jacqueline Dinnes, Alice J Sitch, Chris Hyde, Jonathan J Deeks
BACKGROUND: There is a growing recognition for the need to expand our evidence base for the clinical effectiveness of diagnostic tests. Many international bodies are calling for diagnostic randomized controlled trials to provide the most rigorous evidence of impact to patient health. Although these so-called test-treatment RCTs are very challenging to undertake due to their methodological complexity, they have not been subjected to a systematic appraisal of their methodological quality...
February 24, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28236761/activity-associated-with-speech-articulation-measured-through-direct-cortical-recordings
#13
Alexandra Basilakos, Julius Fridriksson, Chris Rorden, Roozbeh Behroozmand, Taylor Hanayik, Thomas Naselaris, John Del Gaizo, Jesse Breedlove, W A Vandergrift, Leonardo Bonilha
The insula has been credited with a role in a number of functions, including speech production. Here, we recorded electrocorticography (ECoG) signals from the left insula during pseudoword articulation in two patients undergoing pre-surgical monitoring for the management of medically-intractable epilepsy. Event-related band power (ERBP) activity from electrodes implanted in the superior precentral gyrus of the insula (SPGI) was compared to that of other left hemisphere regions implicated in speech production...
February 22, 2017: Brain and Language
https://www.readbyqxmd.com/read/28230154/compiler-aided-systematic-construction-of-large-scale-dna-strand-displacement-circuits-using-unpurified-components
#14
Anupama J Thubagere, Chris Thachuk, Joseph Berleant, Robert F Johnson, Diana A Ardelean, Kevin M Cherry, Lulu Qian
Biochemical circuits made of rationally designed DNA molecules are proofs of concept for embedding control within complex molecular environments. They hold promise for transforming the current technologies in chemistry, biology, medicine and material science by introducing programmable and responsive behaviour to diverse molecular systems. As the transformative power of a technology depends on its accessibility, two main challenges are an automated design process and simple experimental procedures. Here we demonstrate the use of circuit design software, combined with the use of unpurified strands and simplified experimental procedures, for creating a complex DNA strand displacement circuit that consists of 78 distinct species...
February 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28227054/covariance-based-outlier-detection-with-feature-selection
#15
Chris E Zwilling, Michelle Y Wang, Chris E Zwilling, Michelle Y Wang, Chris E Zwilling, Michelle Y Wang
The present covariance based outlier detection algorithm selects from a candidate set of feature vectors that are best at identifying outliers. Features extracted from biomedical and health informatics data can be more informative in disease assessment and there are no restrictions on the nature and number of features that can be tested. But an important challenge for an algorithm operating on a set of features is for it to winnow the effective features from the ineffective ones. The powerful algorithm described in this paper leverages covariance information from the time series data to identify features with the highest sensitivity for outlier identification...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28223996/untargeted-metabotyping-lolium-perenne-reveals-population-level-variation-in-plant-flavonoids-and-alkaloids
#16
Mingshu Cao, Karl Fraser, Chris Jones, Alan Stewart, Thomas Lyons, Marty Faville, Brent Barrett
Metabolomics provides a powerful platform to characterize plants at the biochemical level, allowing a search for underlying genes and associations with higher level complex traits such as yield and nutritional value. Efficient and reliable methods to characterize metabolic variation in economically important species are considered of high value to the evaluation and prioritization of germplasm and breeding lines. In this investigation, a large-scale metabolomic survey was performed on a collection of diverse perennial ryegrass (Lolium perenne L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28222264/graphene-ink-laminate-structures-on-poly-vinylidene-difluoride-pvdf-for-pyroelectric-thermal-energy-harvesting-and-waste-heat-recovery
#17
Daniel Zabek, Kris Seunarine, Chris Spacie, Chris Bowen
Thermal energy can be effectively converted into electricity using pyroelectrics, which act as small scale power generator and energy harvesters providing nanowatts to milliwatts of electrical power. In this paper, a novel pyroelectric harvester based on free-standing poly(vinylidene difluoride) (PVDF) was manufactured that exploits the high thermal radiation absorbance of a screen printed graphene ink electrode structure to facilitate the conversion of the available thermal radiation energy into electrical energy...
March 3, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28218928/innovative-mental-health-clinical-placement-developing-nurses-relationship-skills
#18
Dana Perlman, Ellie Taylor, Lorna Moxham, Chris Patterson, Renee Brighton, Tim Heffernan, Susan Sumskis
Engagement in clinical placements is mandatory for all pre-registration nursing programs. Although clinical placements can be valuable, recent literature illustrates that placements within a mental health setting can vary in their educational development. The aim of the current study was to examine the potential learning benefit of 20 pre-registration nursing students in an innovative, university-accredited mental health clinical placement called Recovery Camp. Recovery Camp is a 5-day immersive clinical placement, grounded in therapeutic recreation, which involves all participants engaging in a variety of activities focused on enhancing personal recovery...
February 1, 2017: Journal of Psychosocial Nursing and Mental Health Services
https://www.readbyqxmd.com/read/28196836/label-free-dynamic-mass-redistribution-reveals-low-density-pro-survival-%C3%AE-1b-adrenergic-receptors-in-human-sw480-colon-carcinoma-cells
#19
Dorathy-Ann Harris, Ji-Min Park, Kyung Soon-Lee, Cong Xu, Nephi Stella, Chris Hague
Small molecules that target the adrenergic family of G protein-coupled receptors (GPCRs) show promising therapeutic efficacy for the treatment of various cancers. Herein, we report that human colon cancer cell line SW480 expresses low-density functional α1B-adrenergic receptors (ARs) as revealed by label-free dynamic mass redistribution (DMR) signaling technology and confirmed by quantitative reverse-transcriptase polymerase chain reaction analysis. Remarkably, while endogenous α1B-ARs are not detectable via either [3H]-prazosin binding analysis or phosphoinositol hydrolysis assays, their activation leads to robust DMR and enhanced cell viability...
February 14, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28193003/on-mass-ambiguities-in-high-resolution-shotgun-lipidomics
#20
Chris Bielow, Guido Mastrobuoni, Marica Orioli, Stefan Kempa
Mass-spectrometry-based lipidomics aims to identify as many lipid species as possible from complex biological samples. Due to the large combinatorial search space, unambiguous identification of lipid species is far from trivial. Mass ambiguities are common in direct-injection shotgun experiments, where an orthogonal separation (e.g., liquid chromatography) is missing. Using the rich information within available lipid databases, we generated a comprehensive rule set describing mass ambiguities, while taking into consideration the resolving power (and its decay) of different mass analyzers...
February 21, 2017: Analytical Chemistry
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