bluuebunny/crossref_metadata_2025_split huggingface dataset:
“Optical and Surface Enhanced Raman Scattering properties of Ag modified silicon double nanocone array”
Authors: Mehrvar L. , Sadeghipari M. , Tavassoli S. H. , Mohajerzadeh S. , Fathipour M. 
Published: September 2017

AbstractSurface enhanced Raman scattering (SERS) systems with large number of active sites exhibit superior capability in detection of low concentration analytes. In this paper, we present theoretical as well as experimental studies on the optical properties of a unique hybrid nanostructure, Ag NPs decorated silicon double nanocones (Si-DNCs) array, which provide high density of hot spots. The Si-DNC array is fabricated by employing electron beam lithography together with plasma etching process. Multipole analysis of the scattering spectra, based on the multipole expansion theory, confirms that the toroidal dipole moment dominates over other electric and magnetic multipole moments in the Si-DNCs array. This response occurs as a result of generating current densities flowing in opposite directions and consequently generating H-field vortexes inside the nanocones. Moreover, SERS applicability of this type of nanostructure is examined. For this purpose, the Si-DNCs array is decorated with Ag nanoparticles (NPs) by means of electroless deposition method. Simulation results indicate that combination of multiple resonances, including LSPR resonance of Ag NPs, longitudinal standing wave resonance of Ag layer and inter-particle interaction in the gap region, result in a significant SERS enhancement. Our experimental results demonstrate that Si-DNC/Ag NPs array substrate provides excellent reproducibility and ultrahigh sensitivity.
Asymmetric Electron-Hole Decoherence in Ion-Gated Epitaxial Graphene
Authors: Min Kil-Joon , Park Jaesung , Kim Wan-Seop , Chae Dong-Hun 
Published: September 2017

AbstractWe report on asymmetric electron-hole decoherence in epitaxial graphene gated by an ionic liquid. The observed negative magnetoresistance near zero magnetic field for different gate voltages, analyzed in the framework of weak localization, gives rise to distinct electron-hole decoherence. The hole decoherence rate increases prominently with decreasing negative gate voltage while the electron decoherence rate does not exhibit any substantial gate dependence. Quantitatively, the hole decoherence rate is as large as the electron decoherence rate by a factor of two. We discuss possible microscopic origins including spin-exchange scattering consistent with our experimental observations.
Strain-dependent neutralization reveals antigenic variation of human parechovirus 3
Authors: Karelehto Eveliina , van der Sanden Sabine , Geraets James A. , Domanska Aušra , van der Linden Lonneke , Hoogendoorn Dionne , Koen Gerrit , van Eijk Hetty , Shakeel Shabih , Beaumont Tim , de Jong Menno , Pajkrt Dasja , Butcher Sarah J. , Wolthers Katja C. 
Published: September 2017

AbstractHuman parechovirus 3 (HPeV3), a member of the Picornavirus family, is frequently detected worldwide. However, the observed seropositivity rates for HPeV3 neutralizing antibodies (nAbs) vary from high in Japan to low in the Netherlands and Finland. To study if this can be explained by technical differences or antigenic diversity among HPeV3 strains included in the serological studies, we determined the neutralizing activity of Japanese and Dutch intravenous immunoglobulin batches (IVIG), a rabbit HPeV3 hyperimmune polyclonal serum, and a human HPeV3-specific monoclonal antibody (mAb) AT12-015, against the HPeV3 A308/99 prototype strain and clinical isolates from Japan, the Netherlands and Australia, collected between 1989 and 2015. The rabbit antiserum neutralized all HPeV3 isolates whereas the neutralization capacity of the IVIG batches varied, and the mAb exclusively neutralized the A308/99 strain. Mapping of the amino acid variation among a subset of the HPeV3 strains on an HPeV3 capsid structure revealed that the majority of the surface-exposed amino acid variation was located in the VP1. Furthermore, amino acid mutations in a mAb AT12-015-resistant HPeV3 A308/99 variant indicated the location for potential antigenic determinants. Virus aggregation and the observed antigenic diversity in HPeV3 can explain the varying levels of nAb seropositivity reported in previous studies.
Split dosing of artemisinins does not improve antimalarial therapeutic efficacy
Authors: White N. J. , Watson J. , Ashley E. A. 
Published: September 2017

AbstractIt has been suggested recently, based on pharmacokinetic-pharmacodynamic modelling exercises, that twice daily dosing of artemisinins increases malaria parasite killing and so could “dramatically enhance and restore drug effectiveness” in artemisinin resistant P. falciparum malaria infections. It was recommended that split dosing should be incorporated into all artemisinin combination regimen designs. To explain why parasite clearance rates were not faster with split dose regimens it was concluded that splenic malaria parasite clearance capacity was readily exceeded, resulting in the accumulation of dead parasites in the circulation, that parasite clearance was therefore an unreliable measure of drug efficacy, and instead that human immunity is the primary determinant of clearance rates. To test these various hypotheses we performed a logistic meta-regression analysis of cure rates from all falciparum malaria treatment trials (n = 40) with monotherapy arms containing artemisinin or a derivative (76 arms). There was no evidence that split dosing enhanced cure rates.
Evaluation of biochars from different stock materials as carriers of bacterial strain for remediation of heavy metal-contaminated soil
Authors: Wang Ting , Sun Hongwen , Ren Xinhao , Li Bing , Mao Hongjun 
Published: September 2017

AbstractTwo kinds of biochars, one derived from corn straw and one from pig manure, were studied as carriers of a mutant genotype from Bacillus subtilis (B38) for heavy metal contaminated soil remediation. After amendment with biochar, the heavy metal bioavailability decreased. Moreover, the heavy metal immobilization ability of the biochar was enhanced by combining it with B38. The simultaneous application of B38 and pig manure-derived biochar exhibited a superior effect on the promotion of plant growth and the immobilization of heavy metals in soil. The plant biomass increased by 37.9% and heavy metal concentrations in the edible part of lettuce decreased by 69.9–96.1%. The polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) profiles revealed that pig manure-derived biochar could enhance the proliferation of both exotic B38 and native microbes. These results suggest that B38 carried by pig manure-derived biochar may be a promising candidate for the remediation of soils contaminated by multiple heavy metals.
Potential effects of an invasive seaweed (Caulerpa cylindracea, Sonder) on sedimentary organic matter and microbial metabolic activities
Authors: Rizzo Lucia , Pusceddu Antonio , Stabili Loredana , Alifano Pietro , Fraschetti Simonetta 
Published: September 2017

AbstractCaulerpa cylindracea (Sonder), among the most successful marine bio-invaders on a global scale, poses severe threats to biodiversity. However, the effects of this seaweed on the quantity and the biochemical composition of sedimentary organic matter are still poorly known. Since the whole set of sedimentary features affects the availability of substrates for benthic microbial communities, we: i) investigated the biochemical composition of sediments colonized and not-colonized by C. cylindracea, and ii) compared the metabolic patterns of the microbial communities associated with C. cylindracea and in the sediments colonized and not-colonized by the seaweed. Our results show that C. cylindracea can influence the quantity and biochemical composition of sedimentary organic matter (OM), and that microbial populations associated with colonized sediments do have specific metabolic patterns and degradation capacities. Caulerpa cylindracea can also influence the metabolic patterns of the microbial community specifically adapted to degrade compounds released by the seaweed itself, with possible consequences on C cycling.
A Systematic Review and Meta-Analysis of Predictors of Expressive-Language Outcomes Among Late Talkers
Authors: Fisher Evelyn L. 
Published: September 2017

PurposeThe purpose of this study was to explore the literature on predictors of outcomes among late talkers using systematic review and meta-analysis methods. We sought to answer the question: What factors predict preschool-age expressive-language outcomes among late-talking toddlers?MethodWe entered carefully selected search terms into the following electronic databases: Communication & Mass Media Complete, ERIC, Medline, PsycEXTRA, Psychological and Behavioral Sciences, and PsycINFO. We conducted a separate, random-effects model meta-analysis for each individual predictor that was used in a minimum of 5 studies. We also tested potential moderators of the relationship between predictors and outcomes using metaregression and subgroup analysis. Last, we conducted publication-bias and sensitivity analyses.ResultsWe identified 20 samples, comprising 2,134 children, in a systematic review. According to the results of the meta-analyses, significant predictors of expressive-language outcomes included toddlerhood expressive-vocabulary size, receptive language, and socioeconomic status. Nonsignificant predictors included phrase speech, gender, and family history.ConclusionsTo our knowledge this is the first synthesis of the literature on predictors of outcomes among late talkers using meta-analysis. Our findings clarify the contributions of several constructs to outcomes and highlight the importance of early receptive language to expressive-language development.Supplemental Materialshttps://doi.org/10.23641/asha.5313454
Language Sample Analysis and Elicitation Technique Effects in Bilingual Children With and Without Language Impairment
Authors: Kapantzoglou Maria , Fergadiotis Gerasimos , Restrepo M. Adelaida 
Published: September 2017

Purpose
This study examined whether the language sample elicitation technique (i.e., storytelling and story-retelling tasks with pictorial support) affects lexical diversity (D), grammaticality (grammatical errors per communication unit [GE/CU]), sentence length (mean length of utterance in words [MLUw]), and sentence complexity (subordination index [SI]), which are commonly used indices for diagnosing primary language impairment in Spanish–English-speaking children in the United States.

Method
Twenty bilingual Spanish–English-speaking children with typical language development and 20 with primary language impairment participated in the study. Four analyses of variance were conducted to evaluate the effect of language elicitation technique and group on D, GE/CU, MLUw, and SI. Also, 2 discriminant analyses were conducted to assess which indices were more effective for story retelling and storytelling and their classification accuracy across elicitation techniques.

Results
D, MLUw, and SI were influenced by the type of elicitation technique, but GE/CU was not. The classification accuracy of language sample analysis was greater in story retelling than in storytelling, with GE/CU and D being useful indicators of language abilities in story retelling and GE/CU and SI in storytelling.

Conclusion
Two indices in language sample analysis may be sufficient for diagnosis in 4- to 5-year-old bilingual Spanish–English-speaking children.
Circularly‐polarised slot array with high front‐to‐back ratio and low axial ratio
Authors: Row Jeen‐Sheen , Wu Yu‐Hsin 
Published: September 2017

A novel design for circularly‐polarised (CP) arrays is proposed. The proposed array is composed of dual CP slot antenna elements arranged in a face‐to‐face configuration, and they are simultaneously excited through a slot line. By properly controlling the excitation amplitudes and phases of the two radiating elements, the cross polarisation and back radiation of the array can be effectively reduced. From the measured results, the proposed array can give an axial ratio of lower than 1 dB and a front‐to‐back ratio of higher than 12 dB within a 10 dB‐return‐loss bandwidth of >16%. Simulation results obtained with high frequency structure simulator (HFSS) also agree well with the experimental data.
Scalable indoor positioning system with multi‐band FMCW
Authors: Al‐Qudsi Belal , Joram Niko , El‐Shennawy Mohammed , Ellinger Frank 
Published: September 2017

This study presents a multi‐band scalable positioning system that not only provides accurate means of navigation but also seamlessly extends the maximum number of reference and mobile nodes. Time synchronisation is carried out wirelessly, hence minimising the required hardware to easily set up the system. Due to its high precision and immunity to radio frequency interferences, a multi‐band frequency modulated continuous wave (FMCW) radar system is designed particularly to handle the core time measurements. Large parts of the radar front‐end are fully integrated in an application‐specific integrated circuit. Furthermore, in order to withstand the complex indoor conditions, the system engages a particle filter based tracking algorithm as a data fusion platform. The measurements were evaluated in several practical conditions and compared with the state‐of‐the‐art techniques. The evaluation scenarios include areas with line‐of‐sight and non‐line‐of‐sight conditions. A root mean square positioning error of <17 and 31 cm was achieved in a coverage area of around 500 m2, in both outdoor and indoor conditions, respectively. To the best of the authors’ knowledge, the proposed system outperforms the current commercial systems not only in the aspect of positioning error, but also in the coverage efficiency.
The Association of Decision-to-Incision Time for Cesarean Delivery with Maternal and Neonatal Outcomes
Authors: Bailit Jennifer , Sandoval Grecio , Reddy Uma , Wapner Ronald , Varner Michael , Thorp John , Caritis Steve , Prasad Mona , Tita Alan , Saade George , Sorokin Yoram , Rouse Dwight , Blackwell Sean , Tolosa Jorge , Grobman William ,   for the Eunice Kennedy Shriver National Institute of Child Health and Human Development Maternal-Fetal Medicine Units (MFMU) Network
Published: September 2017

Objective The objective of this study was to estimate whether the decision-to-incision (DTI) time for cesarean delivery (CD) is associated with differences in maternal and neonatal outcomes.
Methods This analysis is of data from women at 25 U.S. medical centers with a term, singleton, cephalic nonanomalous gestation and no prior CD, who underwent an intrapartum CD. Perinatal and maternal outcomes associated with DTI intervals of ≤ 15, 16 to 30, and > 30 minutes were compared.
Results Among 3,482 eligible women, median DTI times were 46 and 27 minutes for arrest and fetal indications for CD, respectively (p < 0.01). Women with a fetal indication whose DTI interval was > 30 minutes had similar odds to the referent group (DTI of 16–30 minutes) for the adverse neonatal and maternal composites (odds ratio [OR]: 0.83, 95% confidence interval [CI]: 0.40–1.71 and OR: 0.89, 95% CI: 0.63–1.27). For arrest disorders, the odds of the adverse neonatal composite were lower among women with a DTI of > 30 minutes (OR: 0.25, 95% CI: 0.08–0.77), and the adverse maternal composite was no different (OR: 1.15, 95% CI: 0.81–1.63).
Conclusion In this analysis, DTI times longer than 30 minutes were not associated with worse maternal or neonatal outcomes.
Subclinical Hyperthyroidism and the Cardiovascular Disease
Authors: Delitala Alessandro 
Published: September 2017

AbstractThyroid hormone excess has complex metabolic effects, particularly on the cardiovascular system. Treatment of these conditions is universally suggested by international guidelines. Subclinical hyperthyroidism, defined by reduced or suppressed TSH levels in the presence of normal free thyroxine and free triiodothyronine values, is common in the general population and progressively increases with aging, being as high as 15.4% in subjects more than 75 years old and more frequent in subjects with nodular goiter. Subclinical hyperthyroidism is often asymptomatic and the diagnosis is incidentally made during screening exams. However, this form of thyroid disorder has gained attention in the last years for its association with cardiovascular disease, in particular with atrial fibrillation. Less clear are the effects of subclinical hyperthyroidism on blood pressure, stroke, or heart failure. The decision to treat subclinical hyperthyroidism is made on the clinical judge, particularly in elderly patients and/or in the presence of comorbidities.
Associations between retirement reasons, chronic pain, athletic identity, and depressive symptoms among former professional footballers
Authors: Sanders George , Stevinson Clare 
Published: September 2017

AbstractBackground: Retirement from professional sport has been recognised as a major psychological stressor, and there is a need to identify factors that increase the risk of mental health problems after career termination. The current study examined associations between career‐ending injury, chronic pain, athletic identity, and depressive symptomology in retired professional footballers. Methods: A cross‐sectional study was performed with 307 retired male footballers who had played within a professional United Kingdom league. Participants completed measures of depressive symptoms (Short Depression‐Happiness Scale), chronic pain (Pain Intensity Numerical Rating Scale), and athletic identity (Athletic Identity Measurement Scale), and reported their reasons for retirement. Results: A total of 48 participants (16%) met the cut‐off score for possible cases of clinically relevant depression. These participants were more recently retired, and had higher athletic identity than those without depressive symptoms. Former players with depressive symptoms were more likely to cite injury as a retirement reason, and report higher levels of ongoing injury‐related pain. Multivariate logistic regression revealed that the presence of depressive symptoms was independently associated with retirement through injury (OR = 3.44; 95% CI = 1.39, 8.51), higher pain levels (OR = 1.38; 95% CI = 1.02, 1.86), and increased athletic identity (OR = 1.28; 95% CI = 1.14, 1.44). Conclusions: Career‐ending injury is strongly associated with higher odds of depressive symptomology during retirement, while experiencing chronic pain, and maintaining a high sense of athletic identity, are additional potential contributors.
The Curious Case of ‘Schools’ of IR: From the Sociology to the Geopolitics of Knowledge
Authors: Zhang Yongjin , Kristensen Peter Marcus 
Published: September 2017

Abstract
This article interrogates the questions evoked by the curious case of ‘schools’ of thought in International Relations (IR) through the twin perspectives of the sociology of knowledge and geopolitics of knowledge. Drawing inspirations from the tradition of the sociology of IR pioneered by E. H. Carr, the paper first explores how geo-epistemic diversity can help understand the sociologically problematic nature of IR knowledge production in the existing discipline. Taking cues from Randall Collins’s sociology of philosophies, the article moves to identify four clusters of sociological conditions and dynamics that, we argue, facilitate the formation and sustain the operation of schools of thought in IR. Taking seriously the recent insight from geopolitics of knowledge, the article then looks at why and how school labelling constitutes a battleground for contestation and legitimation of knowledge. While the ‘core’ uses the school label to create a parallel, and explicitly inferior, universe of knowledge production to localize theoretical noises from the peripheries, the school label, we argue, has been proactively appropriated by those at peripheries and semi-peripheries for three strategic purposes: to engage in a purposely contentious politics, to question the claim of the American ‘core’ as the creator, depositor, and distributor of universal knowledge, and to unveil the geo-historical linkage between the political and the epistemic. School labelling matters, we further argue, because it has become a site of contestation of geopolitics of knowledge and reflects the perils and promises in our collective pursuit of constructing a truly global IR.
A Risk Calculator Using Preoperative Opioids for Prediction of Total Knee Revision Arthroplasty
Authors: Starr Jordan , Rozet Irene , Ben-Ari Alon 
Published: September 2017

Objectives:
Total knee arthroplasty (TKA) is a procedure to improve quality of life. However, some patients require early total knee revision (TKR). Chronic opioid use before TKA is associated with TKR. No risk calculator including opioid use or other risk factors is currently available for predicting TKR.

Materials and Methods:
We retrospectively analyzed medical records of Veterans Affairs patients who underwent TKA from January 1, 2006 to January 1, 2012. Patients were followed until January 1, 2013. Chronic opioid use was defined as opioid use for ≥3 months preoperatively. A cross-validated Cox proportional hazards model was created to predict TKR before initial TKA. Model performance was evaluated by the mean absolute error at 1 and 5 years.

Results:
Totally, 32,297 patients were included. A risk calculator was generated with a mean absolute error of 0.1% at 1 year and 3.6% at 5 years. Chronic opioid use was a significant predictor of TKR (hazard ratio [HR], 1.27; 95% confidence interval, 1.13-1.43; P<0.001). Other model variables were age (HR, 0.95; P<0.001), female sex (HR, 0.77; P=0.020), body mass index (HR, 0.99; P=0.022), diabetes (HR, 1.20; P=0.001), chronic kidney disease (HR, 1.48; P<0.001), and nonchronic opioid use (HR, 1.07; P=0.313).

Discussion:
Preoperative chronic opioid use is a predictor of TKR. Using this association and others, a TKA revision risk calculator was generated at http://www.bit.do/tka.
Social Support and Pain Outcomes After Trauma Exposure Among Older Adults
Authors: Richmond Natalie L. , Meyer Michelle L. , Hollowell Allison G. , Isenberg Erin E. , Domeier Robert M. , Swor Robert A. , Hendry Phyllis L. , Peak David A. , Rathlev Niels K. , Jones Jeffrey S. , Lee David C. , Jones Christopher W. , Platts-Mills Timothy F. 
Published: September 2017

Objectives:Certain forms of social support have been shown to improve pain-coping behaviors and pain outcomes in older adults with chronic pain, but little is known about the effect of social support on pain outcomes in older adults following trauma exposure.Methods:We analyzed data from a prospective longitudinal study of adults aged 65 years and older presenting to an emergency department after a motor vehicle collision (MVC) to characterize the relationship between perceived social support and MVC-related pain after trauma overall and by subgroups based on sex, depressive symptoms, and marital status.Results:In our sample (N=176), patients with low perceived social support had higher pain severity 6 weeks after MVC than patients with high perceived social support after adjustment for age, sex, race, and education (4.2 vs. 3.2,P=0.04). The protective effect of social support on pain severity at 6 weeks was more pronounced in men and in married individuals. Patients with low social support were less likely to receive an opioid prescription in the emergency department (15% vs. 32%,P=0.03), but there was no difference in opioid use at 6 weeks (22% vs. 20%,P=0.75).Discussion:Among older adults experiencing trauma, low perceived social support was associated with higher levels of pain at 6 weeks.