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https://www.readbyqxmd.com/read/28548710/measurement-of-glycine-in-healthy-and-tumorous-brain-by-triple-refocusing-mrs-at-3%C3%A2-t-in-vivo
#1
Vivek Tiwari, Zhongxu An, Sandeep K Ganji, Jeannie Baxter, Toral R Patel, Edward Pan, Bruce E Mickey, Elizabeth A Maher, Marco C Pinho, Changho Choi
Glycine (Gly) has been implicated in several neurological disorders, including malignant brain tumors. The precise measurement of Gly is challenging largely as a result of the spectral overlap with myo-inositol (mI). We report a new triple-refocusing sequence for the reliable co-detection of Gly and mI at 3 T and for the evaluation of Gly in healthy and tumorous brain. The sequence parameters were optimized with density-matrix simulations and phantom validation. With a total TE of 134 ms, the sequence gave complete suppression of the mI signal between 3...
May 26, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28545800/outcomes-and-satisfaction-in-pediatric-patients-with-chait-cecostomy-tubes
#2
Mark D Bevill, Kristine Bonnett, Angela Arlen, Christopher Cooper, Cheryl Baxter, Douglas W Storm
INTRODUCTION: Patients with spina bifida and other spinal dysraphisms commonly suffer from fecal incontinence and constipation, which can be treated with antegrade continence enemas. Currently, information regarding outcomes and satisfaction in children who have Chait cecostomy tubes is lacking. The aim of our study was to evaluate the effectiveness of Chait cecostomy tubes in management of constipation in children with spinal dysraphisms. MATERIALS AND METHODS: A questionnaire was completed by patients and/or their families during office visits at the University of Iowa or Nationwide Children's Hospital during follow-up pediatric urology office visits...
May 8, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28544505/understanding-the-mechanisms-of-gold-shell-growth-onto-polymer-microcapsules-to-control-shell-thickness
#3
Alison Louise Tasker, James Hitchcock, Elaine Alice Baxter, Olivier Cayre, Simon Biggs
Polymer microcapsules have been used commercially for decades, however they have an inherent flaw which renders them impractical as a carrier of small, volatile molecules. The porous nature of the polymer shell allows for diffusion of the encapsulated molecules into the bulk. The use of metal shells is an innovative way to prevent undesired loss of small molecules from the core of microcapsules, however it is important, particularly when using expensive metals to ensure that the resulting shell is as thin as possible...
May 21, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28544168/presurgical-language-fmri-mapping-of-six-critical-regions
#4
Christopher F Benjamin, Patricia D Walshaw, Kayleigh Hale, William D Gaillard, Leslie C Baxter, Madison M Berl, Monika Polczynska, Stephanie Noble, Rafeed Alkawadri, Lawrence J Hirsch, Todd C Constable, Susan Y Bookheimer
Language mapping is a key goal in neurosurgical planning. fMRI mapping typically proceeds with a focus on Broca's and Wernicke's areas, although multiple other language-critical areas are now well-known. We evaluated whether clinicians could use a novel approach, including clinician-driven individualized thresholding, to reliably identify six language regions, including Broca's Area, Wernicke's Area (inferior, superior), Exner's Area, Supplementary Speech Area, Angular Gyrus, and Basal Temporal Language Area...
May 23, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28542648/robot-education-peers-in-a-situated-primary-school-study-personalisation-promotes-child-learning
#5
Paul Baxter, Emily Ashurst, Robin Read, James Kennedy, Tony Belpaeme
The benefit of social robots to support child learning in an educational context over an extended period of time is evaluated. Specifically, the effect of personalisation and adaptation of robot social behaviour is assessed. Two autonomous robots were embedded within two matched classrooms of a primary school for a continuous two week period without experimenter supervision to act as learning companions for the children for familiar and novel subjects. Results suggest that while children in both personalised and non-personalised conditions learned, there was increased child learning of a novel subject exhibited when interacting with a robot that personalised its behaviours, with indications that this benefit extended to other class-based performance...
2017: PloS One
https://www.readbyqxmd.com/read/28535192/learning-through-chain-event-graphs-the-role-of-maternal-factors-in-childhood-type-i-diabetes
#6
Claire Keeble, Peter Adam Thwaites, Paul David Baxter, Stuart Barber Pgclthe, Roger Charles Parslow, Graham Richard Law
Chain event graphs are a graphical representation of a statistical model derived from event trees, previously applied to cohort studies but not to case-control studies. We apply the chain event graph framework to a Yorkshire case-control study of childhood type I diabetes, to examine four exposure variables associated with the mother, three of which are fully observed (her school-leaving-age, amniocenteses during pregnancy and delivery type) and one with missing values (her rhesus factor), while incorporating previous type I diabetes knowledge...
May 23, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28534706/analyses-of-thrombi-in-acute-ischemic-stroke-a-consensus-statement-on-current-knowledge-and-future-directions
#7
Simon F De Meyer, Tommy Andersson, Blaise Baxter, Martin Bendszus, Patrick Brouwer, Waleed Brinjikji, Bruce Cv Campbell, Vincent Costalat, Antoni Dávalos, Andrew Demchuk, Diederik Dippel, Jens Fiehler, Urs Fischer, Michael Gilvarry, Matthew J Gounis, Jan Gralla, Olav Jansen, Tudor Jovin, David Kallmes, Pooja Khatri, Kennedy R Lees, Elena López-Cancio, Charles Majoie, Henk Marquering, Ana Paula Narata, Raul Nogueira, Peter Ringleb, Adnan Siddiqui, István Szikora, David Vale, Rüdiger von Kummer, Albert J Yoo, Werner Hacke, David S Liebeskind
Limited data exist on clot composition and detailed characteristics of arterial thrombi associated with large vessel occlusion in acute ischemic stroke. Advances in endovascular thrombectomy and related imaging modalities have created a unique opportunity to analyze thrombi removed from cerebral arteries. Insights into thrombus composition, etiology, physical properties and neurovascular interactions may lead to future advancements in acute ischemic stroke treatment and improved clinical outcomes. Advances in imaging techniques may enhance clot characterization and inform therapeutic decision-making prior to treatment and reveal stroke etiology to guide secondary prevention...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28532246/ergonomics-in-design-methods-techniques
#8
Gordon Baxter
No abstract text is available yet for this article.
May 22, 2017: Ergonomics
https://www.readbyqxmd.com/read/28531865/glutamine-antagonist-mediated-immune-suppression-decreases-pathology-but-delays-virus-clearance-in-mice-during-nonfatal-alphavirus-encephalomyelitis
#9
Victoria K Baxter, Rebecca Glowinski, Alicia M Braxton, Michelle C Potter, Barbara S Slusher, Diane E Griffin
Infection of weanling C57BL/6 mice with the TE strain of Sindbis virus (SINV) causes nonfatal encephalomyelitis associated with hippocampal-based memory impairment that is partially prevented by treatment with 6-diazo-5-oxo-l-norleucine (DON), a glutamine antagonist (Potter et al., J Neurovirol 21:159, 2015). To determine the mechanism(s) of protection, lymph node and central nervous system (CNS) tissues from SINV-infected mice treated daily for 1 week with low (0.3mg/kg) or high (0.6mg/kg) dose DON were examined...
May 19, 2017: Virology
https://www.readbyqxmd.com/read/28530761/drop-spreading-on-a-superhydrophobic-surface-pinned-contact-line-and-bending-liquid-surface
#10
Yanbin Wang, Joseph Eugene Andrews, Liangbing Hu, Siddhartha Das
In this study, we employ molecular dynamics (MD) simulations to probe the spreading of a drop on a superhydrophobic (SH) surface. The SH surface consists of nanopillars and the drop spreads while being in the Cassie-Baxter (CB) state on the nanopillared surface. Most remarkably, unlike the spreading on non-SH surfaces, we witness that the spreading on SH surfaces is not dominated by the motion of the three-phase contact line (TPCL). Rather, the TPCL remains pinned at the edge of a nanopillar and the spreading is ensured by the liquid surface or the liquid-vapor interface (of this pinned TPCL) bending down and wetting the solid adjacent to the TPCL...
May 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28525513/an-observational-assessment-of-anesthesia-capacity-in-madagascar-as-a-prerequisite-to-the-development-of-a-national-surgical-plan
#11
Linden S Baxter, Vaonandianina A Ravelojaona, Hasiniaina N Rakotoarison, Alison Herbert, Emily Bruno, Kristin L Close, Vanessa Andean, Hery H Andriamanjato, Mark G Shrime, Michelle C White
BACKGROUND: The global lack of anesthesia capacity is well described, but country-specific data are needed to provide country-specific solutions. We aimed to assess anesthesia capacity in Madagascar as part of the development of a Ministry of Health national surgical plan. METHODS: As part of a nationwide surgical safety quality improvement project, we surveyed 19 of 22 regional hospitals, representing surgical facilities caring for 75% of the total population. The assessment was divided into 3 areas: anesthesia workforce density, infrastructure and equipment, and medications...
June 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28525273/directional-fluid-gating-by-janus-membranes-with-heterogeneous-wetting-properties-for-selective-oil-water-separation
#12
Prashant Gupta, Balasubramanian Kandasubramanian
The rising oil seepage accidents evolved into a global issue necessitating immediate counter measure to abridge its catastrophic repercussions on sensitive marine ecosystem urging innovative techniques for effective oil/water separation. Here, we report surface tailored wettability modified superhydrophobic/superoleophilic Janus membrane by impregnating nonionic surfactant stabilized nanosized polytetrafluoroethylene (PTFE) dispersion polymerized via nonfluorinated processing aid onto cotton substrate using the Meyer rod-coating technique, exhibiting excellent separation efficiency up to 98% with various petroleum products and retaining its intrinsic properties for at least 30 recurrences...
May 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28515836/college-students-knowledge-of-recovery-beverage-serving-sizes
#13
Stephanie Lewis, Victoria Baxter, Kim Spaccarotella, Walter Andzel
Previous research suggests that chocolate milk may be a beneficial recovery beverage, yet little is known about how athletes and students training for careers in sports science or health-related fields interpret recommended recovery beverage serving sizes. This study examined college students' ability to correctly apply serving size recommendations for chocolate milk and protein powder used during post-exercise recovery and assessed usual consumption of milk as a recovery beverage. College students (34 women, 39 men) poured the amount of chocolate milk they would consume within 90 minutes after exercise unaided and with the use of a serving size guide...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28513479/producing-lasting-amphiphobic-building-surfaces-with-self-cleaning-properties
#14
Dario Facio, Luis Carrascosa, Maria Jesus Mosquera
Nowadays, producing building surfaces that prevent water and oil uptake and which present self-cleaning activity is still a challenge. In this study, amphiphobic (superhydrophobic and oleophobic) building surfaces were successfully produced. A simple and low-cost process was developed, which is applicable to large-scale building surfaces, according the following procedure: (1) By spraying a SiO2 nanocomposite which produces a closely-packed nanoparticle uniform topography; (2) By functionalizing the previous coating with a fluorinated alkoxysilane, producing high hydrophobicity and oleophobicity...
May 17, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28513186/initially-intact-neural-responses-to-pain-in-autism-are-diminished-during-sustained-pain
#15
Michelle D Failla, Estephan J Moana-Filho, Greg K Essick, Grace T Baranek, Baxter P Rogers, Carissa J Cascio
Pain assessments typically depend on self-report of the pain experience. Yet, in individuals with autism spectrum disorders, this can be an unreliable due to communication difficulties. Importantly, observations of behavioral hypo- and hyperresponsivity to pain suggest altered pain sensitivity in autism spectrum disorder. Neuroimaging may provide insight into mechanisms underlying pain behaviors. The neural pain signature reliably responds to painful stimulation and is modulated by other outside regions, affecting the pain experience...
May 1, 2017: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/28513162/radical-c-h-fluorination-using-unprotected-amino-acids-as-radical-precursors
#16
Alyssa M Hua, Duy N Mai, Ramon Martinez, Ryan D Baxter
We report a unique example of utilizing unprotected amino acids for benzylic C-H fluorination via a radical process. α-Aminoalkyl radicals are readily generated via oxidative decarboxylation of unprotected amino acids using a simple silver(I) catalyst and Selectfluor, which serves as both a mild oxidant and source of electrophilic fluorine. Mechanistic investigation shows that coordination of the unprotected amino acid plays a crucial role in lowering the oxidation potential of Ag(I), enabling oxidation under mild conditions...
May 17, 2017: Organic Letters
https://www.readbyqxmd.com/read/28506516/waning-protection-following-5-doses-of-a-3-component-diphtheria-tetanus-and-acellular-pertussis-vaccine
#17
Nicola P Klein, Joan Bartlett, Bruce Fireman, Laurie Aukes, Philip O Buck, Girishanthy Krishnarajah, Roger Baxter
BACKGROUND: The effectiveness of diphtheria, tetanus, and acellular pertussis (DTaP) vaccines wanes substantially after the 5(th) dose given at ages 4-6years, but has not been described following 5 doses of the same type of DTaP vaccine. We investigated waning effectiveness against pertussis in California over nearly 10years, which included large pertussis outbreaks, following 5 doses of GSK DTaP vaccines (DTaP3). METHODS: We conducted a case-control study (NCT02447978) of children who received 5 doses of DTaP at Kaiser Permanente Northern California from 01/2006 through 03/2015...
May 12, 2017: Vaccine
https://www.readbyqxmd.com/read/28505782/nonequilibrium-critical-dynamics-of-the-two-dimensional-ashkin-teller-model-at-the-baxter-line
#18
H A Fernandes, R da Silva, A A Caparica, J R Drugowich de Felício
We investigate the short-time universal behavior of the two-dimensional Ashkin-Teller model at the Baxter line by performing time-dependent Monte Carlo simulations. First, as preparatory results, we obtain the critical parameters by searching the optimal power-law decay of the magnetization. Thus, the dynamic critical exponents θ_{m} and θ_{p}, related to the magnetic and electric order parameters, as well as the persistence exponent θ_{g}, are estimated using heat-bath Monte Carlo simulations. In addition, we estimate the dynamic exponent z and the static critical exponents β and ν for both order parameters...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28505337/sex-differences-in-brain-regions-modulating-pain-among-older-adults-a-cross-sectional-resting-state-functional-connectivity-study
#19
Todd B Monroe, Roger B Fillingim, Stephen P Bruehl, Baxter P Rogers, Mary S Dietrich, John C Gore, Sebastian W Atalla, Ronald L Cowan
Objective.:  A long-standing hypothesis is that when compared with males, females may be at increased risk of experiencing greater pain sensitivity and unpleasantness. The purpose of this study was to examine sex differences in pain psychophysics and resting state functional connectivity (RSFC) in core pain regions in an age- and sex-matched sample of healthy older adults. Design.:  Between groups, cross-sectional. Setting.:  Vanderbilt University and Medical Center...
May 13, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28505331/antimicrobial-susceptibility-of-clinical-isolates-of-neisseria-gonorrhoeae-to-alternative-antimicrobials-with-therapeutic-potential
#20
P R S Lagacé-Wiens, H J Adam, N M Laing, M R Baxter, I Martin, M R Mulvey, J A Karlowsky, D J Hoban, G G Zhanel
Background: The prevalence of MDR Neisseria gonorrhoeae is increasing globally and represents a public health emergency. Development and approval of new anti-gonococcal agents may take years. As a concurrent approach to developing new antimicrobials, the laboratory and clinical evaluation of currently licensed antimicrobials not widely used for the treatment of gonorrhoea may provide new options for the treatment of gonococcal infections. Objectives: To determine the in vitro activity of nine alternative, currently licensed and late-development antimicrobials with the potential to treat gonococcal infections against 112 clinical isolates of N...
May 12, 2017: Journal of Antimicrobial Chemotherapy
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