bluuebunny/crossref_metadata_2025_split huggingface dataset:
Walkable Dual Emissions
Authors: Xu Hai-Bing , Jiao Peng-Chong , Kang Bin , Deng Jian-Guo , Zhang Yan 
Published: July 2013

AbstractWalkable dual emissions, in which the emission bands of the walker reversibly cross or leave those of the stationary ones depending on temperature and concentration, have been demonstrated in cyclic dimeric lanthanide complexes [Ln(hfac)3(PAnPO2)]2 (Ln = EuIII, TbIII; hfac− = hexafluoroacetylacetonate; PAnPO2 = 9,10-bis(diphenylphosphino) anthracene dioxide), providing a concept model for signals exchanging and dispatching. Additionally, good linear relationships are observed between the maximum emission bands of the walker vs the concentrations {lg(M)} and the measurement temperatures (K), implying such materials could be served as potential concentration and temperature sensors.
Distortion‐correcting algorithm of intra‐coding for flat region in depth map
Authors: Yang X. , Yang F. , Ma X. , Li B. 
Published: July 2013

An efficient distortion‐correcting algorithm for the intra‐coding of a depth map is presented by considering the property of the flat area in a depth map. The influence of the distortion of reference pixels on the rate‐distortion (RD) cost function of the macro‐block (MB) in a flat region of a depth map is analysed. Then, the RD performance of the flat region is improved by correcting the distortion of the first MB in the flat area on the basis of this analysis. Experiments show that the performance of the synthesis view of the proposed method can achieve average peak signal‐to‐noise ratio (PSNR) of 0.32 and 0.30 dB compared with the JMVC8.5 and the plane segmentation‐based intra‐prediction method, respectively.
Differential feeding technique for mm‐wave series‐fed antenna‐array
Authors: Bisognin A. , Titz D. , Ferrero F. , Luxey C. , Jacquemod G. , Pilard R. , Gianesello F. , Gloria D. , Brachat P. 
Published: July 2013

A differential feeding technique for a broadband planar antenna‐array is presented. The antenna structure is composed of four parallel linear series‐fed arrays of four microstrip patches. To cancel the beam tilt versus frequency, one side of the array is fed with in‐phase signal, whereas the same out‐of‐phase signal feeds the opposite side of the array. A rat‐race balun is especially designed to generate those two signals. In comparison with other feeding techniques, there is no need for a resistive load which is actually a problem at millimeter (mm)‐wave frequencies. To validate the concept, a 60 GHz prototype etched on the TacLamPlus substrate is designed and measured.
60 Gbits error‐free 4‐PAM operation with 850 nm VCSEL
Authors: Szczerba K. , Westbergh P. , Karlsson M. , Andrekson P.A. , Larsson A. 
Published: July 2013

60 Gbits over 2 m, 50 Gbits over 50 m and 40 Gbits was transmitted over 100 m of OM4 multimode fibre using four‐level pulse amplitude modulation and a directly modulated 850 nm vertical cavity surface emitting laser (VCSEL).
Continuous wave sub‐THz photonic generation with VCSEL‐based optical frequency comb
Authors: Prior E. , Criado Á.R. , de Dios C. , Acedo P. , Ortsiefer M. , Meissner P. 
Published: July 2013

A simple and energy‐efficient photonic system to generate continuously tunable, low phase noise, sub‐THz waves based on COTS components is presented. The optical scheme is based on the use of a commercial vertical cavity surface emitting laser under gain switching modulation that provides a very flat optical frequency comb generator (OFCG) with 23 modes in a 20 dB bandwidth. The laser only needs 15 dBm continuous wave radiofrequency input power and 9 mA of bias current to provide this OFCG. Two optical injection locking stages filter and amplify the two desired modes that are detected in a photodiode to produce the desired sub‐THz signal at the frequency difference of these two selected modes. As an example, demonstrated is the generation of a very stable 88.2 GHz tone with lower linewidth than 10 Hz using a reference of 4.2 GHz to generate the OFCG.
Compact planar triple‐band monopole antennas based on a single‐loop resonator
Authors: Wen Ruiming 
Published: July 2013

Two compact triple‐band monopole antennas consisting of a single‐loop resonator (SLR) fed with coplanar waveguide (CPW) and microstrip transmission lines, respectively, are proposed. The SLR exhibiting three resonances is used to achieve the three operating frequency bands ranging from 2.4 to 6 GHz. The proposed triple‐band antennas exhibit very well eight‐like radiation patterns and low cross‐polarisations, which have potential applications for wireless communications.
Simultaneous determination of position and mass in the cantilever sensor using transfer function method
Authors: Kim Deokman , Hong Seongkyeol , Jang Jaesung , Park Junhong 
Published: July 2013

We present the simultaneous measurement of mass and position of micro-beads attached to the cantilever-based mass sensors using the transfer function method. 10 μm diameter micro-beads were placed on micro-cantilevers and the cantilevers were excited by lead-zirconate-titanate through low-pass filtered random voltages. The cantilever vibration was measured via a laser Doppler vibrometer before and after applying the beads. From the measured transfer function, the bead position was identified using its influence on the cantilever kinetic energy. The bead mass was then obtained by analyzing the wave propagation near the beads. The predicted position and mass agreed well with actual values.
Assessing association between protein truncating variants and quantitative traits
Authors: Rivas Manuel A. , Pirinen Matti , Neville Matthew J. , Gaulton Kyle J. , Moutsianas Loukas , Lindgren Cecilia M. , Karpe Fredrik , McCarthy Mark I. , Donnelly Peter 
Published: July 2013

Abstract
Motivation: In sequencing studies of common diseases and quantitative traits, power to test rare and low frequency variants individually is weak. To improve power, a common approach is to combine statistical evidence from several genetic variants in a region. Major challenges are how to do the combining and which statistical framework to use.
General approaches for testing association between rare variants and quantitative traits include aggregating genotypes and trait values, referred to as ‘collapsing’, or using a score-based variance component test. However, little attention has been paid to alternative models tailored for protein truncating variants. Recent studies have highlighted the important role that protein truncating variants, commonly referred to as ‘loss of function’ variants, may have on disease susceptibility and quantitative levels of biomarkers. We propose a Bayesian modelling framework for the analysis of protein truncating variants and quantitative traits.
Results: Our simulation results show that our models have an advantage over the commonly used methods. We apply our models to sequence and exome-array data and discover strong evidence of association between low plasma triglyceride levels and protein truncating variants at APOC3 (Apolipoprotein C3).
Availability: Software is available from http://www.well.ox.ac.uk/~rivas/mamba
Contact: donnelly@well.ox.ac.uk
First Report of Iris yellow spot virus Infecting Green Onion in Indonesia
Authors: Pappu H. R. , Rauf A. 
Published: July 2013

Green onion (Allium fistulosum L.) is an important vegetable crop for small-holder farmers for domestic consumption in Indonesia. Iris yellow spot virus (IYSV; family Bunyaviridae, genus Tospovirus) transmitted by Thrips tabaci is an economically important viral pathogen of bulb and seed onion crops in many onion-growing areas of the world (1,3). In Asia, IYSV has been reported in India and Sri Lanka (2,4). In April 2013, symptoms suspected to be caused by IYSV were observed on a 1-month-old green onion crop grown for their leaves in a farmer's field in Cipendawa, Pacet, Cianjur District, West Java. Symptoms consisted of elliptical to spindle-shaped, straw colored, irregular, chlorotic lesions with occasional green islands on the leaves. Approximately 25% of the field had plants with these symptoms. The presence of the virus was confirmed with an IYSV-specific Agdia Flash kit. IYSV infection was confirmed by RT-PCR with primers specific to the nucleoprotein (N) gene of IYSV. Primers 465c: 5′-AGCAAAGTGAGAGGACCACC-3′ and IYSV-239f: 5′ TGAGCCCCAATCAAGACG3′ (3) were used as forward and reverse primers, respectively, using total nucleic acids eluted from FTA cards that were previously coated with freshly prepared sap extracts from field samples. Amplicons of approximately 240 bp were obtained from four symptomatic plants tested but not from healthy and water controls. The amplicons were cloned and sequenced. Consensus sequence was derived from three clones. Comparison with IYSV N gene sequences available in GenBank showed sequence identity of 95 to 99% confirming the identity of the virus as IYSV. To our knowledge, this is the first report of IYSV infecting onion in Indonesia. The finding in Java underscores the need for conducting surveys in Java as well as other onion-growing regions of Indonesia to gain a better understanding of its incidence, distribution, and potential impact. References: (1) D. H. Gent et al. Plant Dis. 88:446, 2004. (2) B. Mandal et al. Plant Dis. 96:468, 2012. (3) H. R. Pappu et al. Virus Res. 141:219, 2009. (4) K. S. Ravi et al. Plant Pathol. 55:288, 2006.
First Report of Fire Blight Caused by Erwinia amylovora on Pear in Tunisia
Authors: Rhouma A. , Helali F. , Chettaoui M. , Hajjouji M. , Hajlaoui M. R. 
Published: July 2013

In the spring of 2012 and 2013, symptoms similar to those of fire blight were observed on pear trees (Pyrus communis cv. Alexandrine, Williams) in Tunisia at flowering stages. Disease symptoms appeared in 2012 in the region of Mornag and in the following year extended to the regions of Manouba and Tebourba. More recently, the disease was observed in the regions of Bizerte, Zaghouan, and Beja. The percentages of orchard areas that had infected plants varied from 10 to 40%. Some orchards in Mornag region exhibited more than 75% disease incidence. Symptoms were observed on flowers and young shoots. Blighted blossoms appeared wilted, shriveled, and brown, and dead flowers remained on the stems. Infected shoots wilted rapidly and often formed shepherd's crooks at their tips. Samples of diseased young shoots and flowers were subjected to pathogen isolation and identification. Bacteria were isolated from washed tissues on King's B medium (KB) (1). Colonies with morphology similar to that of Erwinia amylovora were purified by sub-culturing on KB. The strains were first characterized based on morphology and biochemical tests (1). Sixteen strains produced white colonies on KB, were gram-negative, did not produce a fluorescent pigment on KB, did not grow at 35°C, and induced a hypersensitive reaction when infiltrated into tobacco leaves (cv. Xanthi). These strains were identified as E. amylovora by double-antibody sandwich indirect-ELISA and immunofluorescene microscopy using a polyclonal antibody (2) and nested PCR targeting the pEA29 plasmid (3). Pathogenicity was tested using a detached-fruit assay (1). Each strain was inoculated onto three pear fruit (cv. Alexandrine) wounded with a scalpel dipped in a 109 CFU/ml bacterial suspension. The inoculated fruit were incubated at 25°C and 80% relative humidity in plates with sterile 1% agar. Negative controls consisted of fruit wounded with a scalpel dipped in sterile distilled water. Seven days after inoculation, symptoms of discoloration, browning, and production of bacterial ooze appeared at the inoculated points. No symptoms developed on negative controls. Reisolation of bacteria yielded colonies with characteristics of E. amylovora. Purified amplicons from nested PCR were sequenced (KF302525, KF302526) and a BLAST search of the GenBank database revealed 98% homology with E. amylovora strain HF560643.1. References: (1) Anonymous. OEPP/EPPO Bull. 34:159, 2004. (2) M. T. Gorris et al. Acta Hortic. 411:41, 1996. (3) P. Llop et al. Appl. Environ. Microbiol. 66:2071, 2000.
Graduate Medical Education in Humanism and Professionalism
Authors: Garvey Katharine C. , Kesselheim Jennifer C. , Herrick Daniel B. , Woolf Alan D. , Leichtner Alan M. 
Published: July 2013

ABSTRACTThe deterioration of humanism and professionalism during graduate medical training is an acknowledged concern, and programs are required to provide professionalism education for pediatric fellows. We conducted a needs assessment survey in a national sample of 138 first‐ and second‐year gastroenterology fellows (82% response rate). Most believed that present humanism and professionalism education met their needs, but this education was largely informal (eg, role modeling). Areas for formal education desired by >70% included competing demands of clinical practice versus research, difficult doctor–patient relationships, depression/burnout, angry parents, medical errors, work–life balance, and the patient illness experience. These results may guide curricula to formalize humanism and professionalism education in pediatric gastroenterology fellowships.
Cardiovascular control and time domain Granger causality: insights from selective autonomic blockade
Authors: Porta Alberto , Castiglioni Paolo , Di Rienzo Marco , Bassani Tito , Bari Vlasta , Faes Luca , Nollo Giandomenico , Cividjan Andrei , Quintin Luc 
Published: July 2013

We studied causal relations among heart period (HP), systolic arterial pressure (SAP) and respiration (R) according to the definition of Granger causality in the time domain. Autonomic pharmacological challenges were used to alter the complexity of cardiovascular control. Atropine (AT), propranolol and clonidine (CL) were administered to block muscarinic receptors, β-adrenergic receptors and centrally sympathetic outflow, respectively. We found that: (i) at baseline, HP and SAP interacted in a closed loop with a dominant causal direction from HP to SAP; (ii) pharmacological blockades did not alter the bidirectional closed-loop interactions between HP and SAP, but AT reduced the dominance of the causal direction from HP to SAP; (iii) at baseline, bidirectional interactions between HP and R were frequently found; (iv) the closed-loop relation between HP and R was unmodified by the administration of drugs; (v) at baseline, unidirectional interactions from R to SAP were often found; and (vi) while AT induced frequently an uncoupling between R and SAP, CL favoured bidirectional interactions. These results prove that time domain measures of Granger causality can contribute to the description of cardiovascular control by suggesting the temporal direction of the interactions and by separating different causality schemes (e.g. closed loop versus unidirectional relations).
Spatio‐temporal dynamics in the response of woodland caribou and moose to the passage of grey wolf
Authors: Latombe Guillaume , Fortin Daniel , Parrott Lael 
Published: July 2013

SummaryPredators impact prey populations not only by consuming individuals, but also by altering their behaviours. These nonlethal effects can influence food web properties as much as lethal effects. The mechanisms of nonlethal effects include chronic and temporary anti‐predator behaviours, the nature of which depends on the spatial dynamics of predators and the range over which prey perceive risk.The relation between chronic and ephemeral responses to risk determines predator–prey interactions, with consequences that can ripple across the food web. Nonetheless, few studies have quantified the spatio‐temporal scales over which prey respond to predation threat, and how this response varies with habitat features.We evaluated the reaction of radio‐collared caribou and moose to the passage of radio‐collared wolves, by considering changes in movement characteristics during winter and summer. We used an optimization algorithm to identify the rate at which the impact of prior passage of wolves decreases over time and with the predator's distance.The spatial and temporal scales of anti‐predator responses varied with prey species and season. Caribou and moose displayed four types of behaviour following the passage of wolves: lack of response, increased selection of safe land cover types, decreased selection of risky cover types and increased selection of food‐rich forest stands. For example, moose increased their avoidance of open conifer stands with lichen in summer, which are selected by wolves in this season. Also in winter, caribou increased their selection of conifer stands with lichen for nearly 10 days following a wolf's passage. This stronger selection for food‐rich patches could indicate that the recent passage of wolves informs caribou on the current predator distribution and reveals the rate at which this information become less reliable over time.Caribou and moose used anti‐predator responses that combine both long‐ and short‐term behavioural adjustments. The spatial game between wolves and their prey involves complex and nonlinear mechanisms that vary between species and seasons. A comprehensive assessment of risk effects on ecosystem dynamics thus requires the characterization of chronic and temporary anti‐predator behaviours.
The tail‐associated depolymerase of Erwinia amylovora phage L1 mediates host cell adsorption and enzymatic capsule removal, which can enhance infection by other phage
Authors: Born Yannick , Fieseler Lars , Klumpp Jochen , Eugster Marcel R. , Zurfluh Katrin , Duffy Brion , Loessner Martin J. 
Published: July 2013

SummaryThe depolymerase enzyme (DpoL1) encoded by the T7‐like phage L1 efficiently degrades amylovoran, an important virulence factor and major component of the extracellular polysaccharide (EPS) of its host, the plant pathogen Erwinia amylovora. Mass spectrometry analysis of hydrolysed EPS revealed that DpoL1 cleaves the galactose‐containing backbone of amylovoran. The enzyme is most active at pH 6 and 50°C, and features a modular architecture. Removal of 180 N‐terminal amino acids was shown not to affect enzyme activity. The C‐terminus harbours the hydrolase activity, while the N‐terminal domain links the enzyme to the phage particle. Electron microscopy demonstrated that DpoL1‐specific antibodies cross‐link phage particles at their tails, either lateral or frontal, and immunogold staining confirmed that DpoL1 is located at the tail spikes. Exposure of high‐level EPS‐producing Er. amylovora strain CFBP1430 to recombinant DpoL1 dramatically increased sensitivity to the Dpo‐negative phage Y2, which was not the case for EPS‐negative mutants or low‐level EPS‐producing Er. amylovora. Our findings indicate that enhanced phage susceptibility is based on enzymatic removal of the EPS capsule, normally a physical barrier to Y2 infection, and that use of DpoL1 together with the broad host range, virulent phage Y2 represents an attractive combination for biocontrol of fire blight.
A component analysis of a brief psycho‐educational couples' workshop: one‐year follow‐up results
Authors: Babcock Julia C. , Gottman John M. , Ryan Kimberly D. , Gottman Julie S. 
Published: July 2013

This study tested moderators of treatment outcome of the ‘Art and Science of Love (ASL) Workshop’, a couples' group psycho‐educational intervention with 80 distressed married couples. Couples were randomly assigned to one of four conditions: (1) friendship enhancement alone, (2) conflict management alone, (3) combined friendship enhancement + conflict management or (4) bibliotherapy. Three outcomes were assessed: (1) relationship satisfaction, (2) friendship quality and (3) destructive conflict at pre‐, post‐ and one year following the intervention. All conditions led to increased marital satisfaction and decreased problems with friendship and destructive conflict at one‐year follow‐up. Examining exposure to the components of the ASL workshop in a 2×2 design – friendship enhancement (yes/no) vs. conflict management (yes/no) – revealed differential impact for men's and women's relationship outcomes over time. Results suggest that the combined condition produced the greatest changes in marital satisfaction and the greatest decreases in problems in friendship and conflict, particularly for men.Practitioner points
A combination of friendship enhancement and conflict management is recommended to maximize outcomes.
Bibliotherapy alone may be effective for significantly distressed couples without co‐morbid problems.
Psycho‐education is recommended before a course of more intensive couple therapy.
Men and women have different needs and respond to particular aspects of the programme.
Women particularly value the component concerning how to deal with conflict constructively and require more than the friendship enhancement component of the programme.
State‐Level Unemployment and the Utilization of Preventive Medical Services
Authors: Tefft Nathan , Kageleiry Andrew 
Published: July 2013

ObjectiveTo study the association between macroeconomic conditions and preventive medical service utilization.Data Sources/Study SettingSecondary data collection of a survey of the civilian, non‐institutionalized population of adults (age 18 and older) in the United States between 1987 and 2010.Study DesignRegression analyses that adjust for individual‐level demographic and socioeconomic determinants, state and time‐fixed effects, and state‐specific time trends.Data Collection/Extraction MethodsState health departments, with technological and methodological assistance from the Centers for Disease Control and Prevention, conducted a cross‐sectional yearly telephone survey using a standardized questionnaire.Principal FindingsThe use of preventive medical services is procyclical: a 1 percentage point increase in the state‐level unemployment rate is associated with a 1.58 percent decrease in the quantity of distinct preventive care services utilized. Women and economically disadvantaged populations are shown to be especially sensitive to macroeconomic fluctuations.ConclusionsPolicy makers should be aware of cyclical changes in preventive care use, particularly among disadvantaged populations, when making challenging budgetary decisions during economic downturns. As physician recommendations can have a strong impact on patients' use, health care providers could increase efforts to persuade patients to seek screening exams and necessary vaccinations during periods of high unemployment.
Validation of Patient and Nurse Short Forms of the Readiness for Hospital Discharge Scale and Their Relationship to Return to the Hospital
Authors: Weiss Marianne E. , Costa Linda L. , Yakusheva Olga , Bobay Kathleen L. 
Published: July 2013

ObjectiveTo validate patient and nurse short forms for discharge readiness assessment and their associations with 30‐day readmissions and emergency department (ED) visits.Data Sources/Study SettingA total of 254 adult medical‐surgical patients and their discharging nurses from an Eastern US tertiary hospital between May and November, 2011.Study DesignProspective longitudinal design, multinomial logistic regression analysis.Data Collection/Extraction MethodsNurses and patients independently completed an eight‐item Readiness for Hospital Discharge Scale on the day of discharge. Patient characteristics, readmissions, and ED visits were electronically abstracted.Principal FindingsNurse assessment of low discharge readiness was associated with a six‐ to nine‐fold increase in readmission risk. Patient self‐assessment was not associated with readmission; neither was associated with ED visits.ConclusionsNurse discharge readiness assessment should be added to existing strategies for identifying readmission risk.