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https://www.readbyqxmd.com/read/28434190/mixed-severity-fire-history-at-a-forest-grassland-ecotone-in-west-central-british-columbia-canada
#1
Jill E Harvey, Dan J Smith, Thomas T Veblen
This study examines spatially variable stand structure and fire-climate relationships at a low elevation forest-grassland ecotone in west central British Columbia, Canada. Fire history reconstructions were based on samples from 92 fire-scarred trees and stand demography from 27 plots collected over an area of about 7 km(2) . We documented historical chronologies of widespread fires and localized grassland fires between AD 1600 and 1900. Relationships between fire events, reconstructed values of the Palmer Drought Severity Index and annual precipitation were examined using superposed epoch and bivariate event analyses...
April 23, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28433732/the-clinical-significance-of-an-estimated-fetal-weight-below-the-10th-centile-a-comparison-of-outcomes-between-5th-versus-5th-9th-centile
#2
Malgorzata Mlynarczyk, Suneet P Chauhan, Hind A Baydoun, Catherine M Wilkes, Kimberly R Earhart, Yili Zhao, Christopher Goodier, Eugene Chang, Nicole M Lee Plenty, E Kaitlyn Mize, Michelle Owens, Shilpa Babbar, Dev Maulik, Emily DeFranco, David McKinney, Alfred Z Abuhamad
BACKGROUND: The association between small for gestational age (SGA; birth weight < 10(th) centile for gestational age) and neonatal morbidity is well established. Yet there is a paucity of data on the relationship between suspected SGA (sonographic estimated fetal weight <10(th) centile), at two thresholds and subsequent neonatal morbidity. OBJECTIVE: The objective of this study was to determine the relationship between sonographic estimated fetal weight (SEFW) < 5(th) centile versus 5-9(th) centile and neonatal morbidity...
April 19, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28432451/investigating-the-use-of-world-knowledge-during-on-line-comprehension-in-adults-with-autism-spectrum-disorder
#3
Philippa L Howard, Simon P Liversedge, Valerie Benson
The on-line use of world knowledge during reading was examined in adults with autism spectrum disorder (ASD). Both ASD and typically developed adults read sentences that included plausible, implausible and anomalous thematic relations, as their eye movements were monitored. No group differences in the speed of detection of the anomalous violations were found, but the ASD group showed a delay in detection of implausible thematic relations. These findings suggest that there are subtle differences in the speed of world knowledge processing during reading in ASD...
April 21, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28430492/high-t_-c-superconductivity-in-fese-at-high-pressure-dominant-hole-carriers-and-enhanced-spin-fluctuations
#4
J P Sun, G Z Ye, P Shahi, J-Q Yan, K Matsuura, H Kontani, G M Zhang, Q Zhou, B C Sales, T Shibauchi, Y Uwatoko, D J Singh, J-G Cheng
The importance of electron-hole interband interactions is widely acknowledged for iron-pnictide superconductors with high transition temperatures (T_{c}). However, the absence of hole pockets near the Fermi level of the iron-selenide (FeSe) derived high-T_{c} superconductors raises a fundamental question of whether iron pnictides and chalcogenides have different pairing mechanisms. Here, we study the properties of electronic structure in the high-T_{c} phase induced by pressure in bulk FeSe from magnetotransport measurements and first-principles calculations...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28430474/dispersion-management-of-propagating-waveguide-modes-on-the-water-surface
#5
Shenhe Fu, Jianying Zhou, Yongyao Li, Lev Shemer, Ady Arie
We report on the theoretical and experimental study of the generation of propagating waveguide modes on the water surface. These propagating modes are modulated in the transverse direction in a manner that satisfies boundary conditions on the walls of the water tank. It is shown that the propagating modes possess both anomalous and normal dispersion regimes, in contrast to the extensively studied zero mode that, in the case of deep water, only has normal dispersion with a fixed frequency independent dispersion coefficient...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28430466/evidence-for-anomalous-dynamic-heterogeneities-in-isostatic-supercooled-liquids
#6
M Micoulaut, M Bauchy
Upon cooling, the dynamics of supercooled liquids exhibits a growing transient spatial distribution of relaxation times that is known as dynamic heterogeneities. The relationship between this now well-established crucial feature of the glass transition and some underlying liquid properties remains challenging and elusive in many respects. Here we report on computer simulations of liquids with a changing network structure (densified silicates), and show that there is a deep and important link between the mechanical nature characterized by topological constraints and the spatial extent of such fluctuations...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28430261/wideband-spectrum-analysis-of-ultra-high-frequency-radio-wave-signals-due-to-advanced-one-phonon-non-collinear-anomalous-light-scattering
#7
Alexandre S Shcherbakov, Adan Omar Arellanes
We present a principally new acousto-optical cell providing an advanced wideband spectrum analysis of ultra-high frequency radio-wave signals. For the first time, we apply a recently developed approach with the tilt angle to a one-phonon non-collinear anomalous light scattering. In contrast to earlier cases, now one can exploit a regime with the fixed optical wavelength for processing a great number of acoustic frequencies simultaneously in the linear regime. The chosen rutile-crystal combines a moderate acoustic velocity with low acoustic attenuation and allows us wide-band data processing within GHz-frequency acoustic waves...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28427867/outcomes-from-anomalous-origin-of-the-left-coronary-artery-from-the-pulmonary-artery-repair-long-term-complications-in-relation-to-residual-myocardial-abnormalities
#8
Miki Kanoh, Kei Inai, Tokuko Shinohara, Hirofumi Tomimatsu, Toshio Nakanishi
BACKGROUND: Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital coronary artery irregularity. This study aimed to clarify the long-term postoperative outcomes in ALCAPA patients, and to compare the infantile and adult types. METHODS: We retrospectively analyzed the clinical data from 33 patients with ALCAPA who underwent surgical repairs after 1980. The patients were grouped based on whether presentation occurred before (infantile type: n=14) or after (adult type: n=19) 1 year of age...
April 17, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28426224/quantitative-analysis-of-polymer-brush-formation-kinetics-using-quartz-crystal-microbalance-viscoelasticity-of-polymer-brush
#9
Hirokazu Tanoue, Norifumi L Yamada, Kohzo Ito, Hideaki Yokoyama
Polymer brush formation kinetics was measured by quartz crystal microbalance (QCM). In the QCM measurement anomalous complex frequency shift as a function of graft density was observed: dissipation rate shift ΔΓ first increased, showed a peak and then decreased despite the graft density of the polymer brush was increasing monotonically. We calculated the shear modulus of the brush layer from the measured complex frequency shift and revealed that the peak of ΔΓ described the crossover from a viscous brush layer to elastic brush layer...
April 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28424430/exploring-non-stationarity-patterns-in-schizophrenia-neural-reorganization-abnormalities-in-the-alpha-band
#10
Pablo Núñez, Jesus Poza, Alejandro Bachiller, Javier Gomez-Pilar, Alba Lubeiro, Vicente Molina, Roberto Hornero
OBJECTIVE: The aim of this paper was to characterize brain non-stationarity during an auditory oddball task in schizophrenia (SCH). The level of non-stationarity was measured in the baseline and response windows of relevant tones in SCH patients and healthy controls. APPROACH: Event-related potentials were recorded from 28 SCH patients and 51 controls. Non-stationarity was estimated in the conventional electroencephalography frequency bands by means of Kullback-Leibler divergence (KLD)...
April 20, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28424020/the-utility-of-an-obesity-specific-small-for-gestational-age-standard-for-pregnancies-complicated-by-maternal-obesity
#11
Ruofan Yao, Sarah E Foster, Aaron B Caughey
INTRODUCTION: An obesity-specific standard for small for gestational age (SGA) pregnancies may help identify additional at risk pregnancies. METHODS: This was a retrospective cohort study of all non-anomalous singleton neonates born in Texas from 2006-2011. Analysis was limited to births between 34 and 42 weeks gestation. Two SGA birth weight standards (birth weight ≤ 10(th) centile) were generated, one using the entire population (SGApop) and another using obese pregnancies (SGAcust)...
April 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28423127/evaluation-of-anomalous-coronary-arteries-from-the-pulmonary-artery
#12
Alper Guzeltas, Erkut Ozturk, Ibrahim Cansaran Tanidir, Taner Kasar, Sertac Haydin
Objective: This study evaluated clinical and diagnostic findings, treatment methods, and follow-up of cases of anomalous coronary arteries from the pulmonary artery. Methods: The study included all cases diagnosed with anomalous coronary arteries from the pulmonary artery between January 2012 and January 2016. Data from patients' demographic characteristics, electrocardiography, echocardiography, angiographic findings, operation, intensive care unit stay, and follow-up were evaluated...
January 2017: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28422194/field-induced-anomalous-spreading-oscillation-ejection-spinning-and-breaking-of-oil-droplets-on-a-strongly-slipping-water-surface
#13
Sunny Kumar, Bhaskarjyoti Sarma, Ahsok Kumar Dasmahapatra, Amaresh Dalal, Dipankar Narayan Basu, Dipankar Bandyopadhyay
Application of an electric field on an oil droplet floating on the surface of a deionized water bath showed interesting motions such as spreading, oscillation, and ejection. The electric field was generated by connecting a pointed platinum cathode at the top of the oil droplet and a copper anode coated with polymer at the bottom of the water layer. The experimental setup mimicked a conventional electrowetting setup with the exception that the oil was spread on a soft and deformable water isolator. While at relatively lower field intensities we observed spreading of the droplet, at intermediate field intensities the droplet oscillated around the platinum cathode, before ejecting out at a speed as high as ∼5 body lengths per second at even stronger field intensities...
April 19, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28417593/anomalous-resistance-hysteresis-in-oxide-reram-oxygen-evolution-and-reincorporation-revealed-by-in-situ-tem
#14
David Cooper, Christoph Baeumer, Nicolas Bernier, Astrid Marchewka, Camilla La Torre, Rafal E Dunin-Borkowski, Stephan Menzel, Rainer Waser, Regina Dittmann
The control and rational design of redox-based memristive devices, which are highly attractive candidates for next-generation nonvolatile memory and logic applications, is complicated by competing and poorly understood switching mechanisms, which can result in two coexisting resistance hystereses that have opposite voltage polarity. These competing processes can be defined as regular and anomalous resistive switching. Despite significant characterization efforts, the complex nanoscale redox processes that drive anomalous resistive switching and their implications for current transport remain poorly understood...
April 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28417038/anomalous-innervation-of-the-median-nerve-in-the-arm-in-the-absence-of-the-musculocutaneous-nerve
#15
Khursheed Raza, Seema Singh, Neerja Rani, Raghav Mishra, Kamakshi Mehta, Saroj Kaler
The brachial plexus innervates the upper extremities. While variations in the formation of the brachial plexus and its terminal branches are quite common, it is uncommon for the median nerve to innervate the muscles of the arm. During the dissection of an elderly male cadaver at the Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India, in 2016, the coracobrachialis muscle was found to be supplied by a direct branch from the lateral root of the median nerve and the musculocutaneous nerve was absent...
February 2017: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/28417037/additional-muscle-slip-of-bicipital-aponeurosis-and-its-anomalous-relationship-with-the-median-cubital-vein
#16
Nandini Bhat, Kumar M R Bhat, Antony S D'Souza, Sushma R Kotian
The cubital region of the arm is a common site for recording blood pressure, taking blood for analysis and administering intravenous therapy and blood transfusions. During the routine dissection of a 70-year-old male cadaver at the Kasturba Medical College, Manipal, Karnataka, India, in 2015, it was observed that the aponeurotic insertion of the biceps brachii muscle divided into two slips. The medial slip fused normally with the deep fascia of the forearm, while flexor carpi radialis muscle fibres originated from the lateral slip...
February 2017: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/28415808/ikk-inhibition-by-bms-345541-suppresses-breast-tumorigenesis-and-metastases-by-targeting-gd2-cancer-stem-cells
#17
Venkata Lokesh Battula, Khoa Nguyen, Jeff Sun, Mary Kathryn Pitner, Bin Yuan, Chandra Bartholomeusz, Numsen Hail, Michael Andreeff
We have identified that the ganglioside GD2 is a marker for breast cancer stem cells (BCSCs), and that targeting the enzyme GD3 synthase (GD3S, which regulates GD2 biosynthesis) reduces breast tumorigenesis. The pathways regulating GD2 expression, and their anomalous functions in BCSC, are unclear. Proteomic analysis of GD2+ and GD2- cells from breast cancer cell lines revealed the activation of NFκB signaling in GD2+ cells. Dose- and time-dependent suppression of NFκB signaling by the small molecule inhibitor BMS-345541 reduced GD2+ cells by > 90%...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415337/mean-squared-displacement-statistical-test-for-fractional-brownian-motion
#18
Grzegorz Sikora, Krzysztof Burnecki, Agnieszka Wyłomańska
Anomalous diffusion in crowded fluids, e.g., in cytoplasm of living cells, is a frequent phenomenon. A common tool by which the anomalous diffusion of a single particle can be classified is the time-averaged mean square displacement (TAMSD). A classical mechanism leading to the anomalous diffusion is the fractional Brownian motion (FBM). A validation of such process for single-particle tracking data is of great interest for experimentalists. In this paper we propose a rigorous statistical test for FBM based on TAMSD...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28415326/numerical-study-of-one-dimensional-compression-of-granular-materials-ii-elastic-moduli-stresses-and-microstructure
#19
Mohamed Hassan Khalili, Jean-Noël Roux, Jean-Michel Pereira, Sébastien Brisard, Michel Bornert
The elastic moduli of a transversely isotropic model granular material, made of slightly polydisperse elastic-frictional spherical beads, in equilibrium along a one-dimensional (oedometric) compression path, as described in the companion paper [M. H. Khalili et al., Phys. Rev. E 95, 032907 (2017)]10.1103/PhysRevE.95.032907, are investigated by numerical simulations. The relations of the five independent moduli to stresses, density, coordination number, fabric and force anisotropies are studied for different internal material states along the oedometric loading path...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28415278/nonergodic-subdiffusion-from-transient-interactions-with-heterogeneous-partners
#20
C Charalambous, G Muñoz-Gil, A Celi, M F Garcia-Parajo, M Lewenstein, C Manzo, M A García-March
Spatiotemporal disorder has been recently associated to the occurrence of anomalous nonergodic diffusion of molecular components in biological systems, but the underlying microscopic mechanism is still unclear. We introduce a model in which a particle performs continuous Brownian motion with changes of diffusion coefficients induced by transient molecular interactions with diffusive binding partners. In spite of the exponential distribution of waiting times, the model shows subdiffusion and nonergodicity similar to the heavy-tailed continuous time random walk...
March 2017: Physical Review. E
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