bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rapid and sensitive determination of multiple endocrine‐disrupting chemicals by ultrasound‐assisted in situ derivatization dispersive liquid–liquid microextraction coupled with ultra‐high‐performance liquid chromatography/tandem mass spectrometry
Authors: Wei Na , Zheng Zhenjia , Wang Yuhua , Tao Yanduo , Shao Yun , Zhu Shuyun , You Jinmao , Zhao Xian‐En 
Published: March 2017

RationaleEndocrine‐disrupting chemicals (EDCs) in environment samples and food stuffs are an increasing serious public health issue due to their potency to interfere and deregulate several aspects of the endocrine system. Because of their extremely low abundance, it remains a challenging task to develop a sensitive detection method.Methods4'‐Carbonyl chloride rosamine (CCR) was used as a derivatization reagent for EDCs for the first time. A new ultrasound‐assisted in situ derivatization/dispersive liquid‐liquid microextraction (UA‐DLLME with in situ derivatization) method for multiple EDCs including five estrogens, two alkylphenols, eight bisphenols, seven parabens and triclosan coupled with ultra‐high‐performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS) has been developed and validated.ResultsThe ionization efficiency of EDCs was greatly enhanced through the introduction of a permanent charged moiety of CCR into the derivatives during electrospray ionization (ESI)‐MS analysis. The main variables potentially affecting the UA‐DLLME with in situ derivatization process are optimized. The recoveries and matrix effects of 23 EDCs for the spiking samples were in the range of 83.0–116.0% and 85.8–114.6%, respectively. Good method reproducibility was achieved.ConclusionsThe limits of detection (LODs) for 23 EDCs were 0.05–0.40 ng/L and 0.03–0.25 ng/g (dry weight, d.w.) for environment samples and food stuffs, respectively. The proposed method has been demonstrated to be suitable for simultaneous determination of multiple EDCs in real samples with high sensitivity, speediness, and good sample clean‐up ability. Copyright © 2017 John Wiley & Sons, Ltd.
A key recovery attack on an error‐correcting code‐based lightweight security protocol
Authors: Erguler Imran 
Published: March 2017

AbstractOne interesting radio‐frequency identification (RFID) application type is RFID searching that aims to hear a specific RFID tag from a large group of tags, that is, ability of detecting whether a target RFID tag is nearby. Very recently, a lightweight protocol using error‐correcting codes has been proposed by Chen et al. to provide a solution in this field. The authors give a detailed analysis of their protocol in terms of security, privacy, communication overhead, and hardware cost, and they claim that it is a realizable scheme with fulfilling security and privacy requirements. In this study, however, we investigate the security aspects of this protocol and clearly demonstrate its security flaws that completely allow an adversary to exploit the system. In particular, by using linear properties of error‐correcting coding, we first describe a tag tracing attack that undermines untraceability property, which is one of the design objectives. Then along with its implementation details, we present a key recovery attack that dramatically reduces the search space of a tag's secret key and show that an adversary can compromise it in convenient time by only querying this tag for several times. As an illustrative example, we retrieve the secret key of the protocol in 2 h for the suggested linear block code
. Copyright © 2017 John Wiley & Sons, Ltd.
The process of self‐regulation in adolescents: A narrative approach
Authors: Conover Kelly , Daiute Colette 
Published: March 2017

ABSTRACTThis qualitative study utilized a narrative approach to explore the process of self‐regulation in adolescents and to examine the functions of various relational genres on psychological state and context expressions in this process. Nineteen participants, who live in high‐risk settings were recruited from a youth development and life skills program located at an urban public high school in the United States. The goal of this project is to craft a process method for research and practice on adolescents' self‐regulation while providing evidence for self‐regulation being a complex process. This research uses an exploratory study design with a narrative approach, utilizing text message based activities in the method. Findings from the plot analysis suggest that for adolescents, the process of self‐regulation begins as highly emotional and then becomes a more emotionally and cognitively balanced process. In addition, adolescents utilize different strategies to resolve conflict situations across different contexts and relational genres.
Catechol-O-methyltransferase gene promoter methylation as a peripheral biomarker in male schizophrenia
Authors: Gao S. , Cheng J. , Li G. , Sun T. , Xu Y. , Wang Y. , Du X. , Xu G. , Duan S. 
Published: March 2017

AbstractAs an epigenetic modification, DNA methylation may reflect the interaction between genetic and environmental factors in the development of schizophrenia (SCZ). Catechol-O-methyltransferase (COMT) gene is a promising candidate gene of SCZ. In the present study, we investigate the association of COMT methylation with the risk of SCZ using bisulfite pyrosequencing technology. Significant association between DNA methylation of COMT and the risk of SCZ is identified (P = 1.618e−007). A breakdown analysis by gender shows that the significance is driven by males (P = 3.310e−009), but not by females. DNA methylation of COMT is not significantly associated with SCZ clinical phenotypes, including p300 and cysteine level. No interaction is found between COMT genotypes and the percent methylation of this gene. Receiver operating characteristic (ROC) curve shows that DNA methylation of COMT is able to predict the SCZ risk in males (area under curve [AUC] = 0.802, P = 1.91e−007). The current study indicates the clinical value of COMT methylation as a potential male-specific biomarker in SCZ diagnosis.
Cognitive control and reward/loss processing in Internet gaming disorder: Results from a comparison with recreational Internet game-users
Authors: Dong G. , Li H. , Wang L. , Potenza M.N. 
Published: March 2017

AbstractAlthough playing of Internet games may lead to Internet gaming disorder (IGD), most game-users do not develop problems and only a relatively small subset experiences IGD. Game playing may have positive health associations, whereas IGD has been repeatedly associated with negative health measures, and it is thus important to understand differences between individuals with IGD, recreational (non-problematic) game use (RGU) and non-/low-frequency game use (NLFGU). Individuals with IGD have shown differences in neural activations from non-gamers, yet few studies have examined neural differences between individuals with IGD, RGU and NLFGU. Eighteen individuals with IGD, 21 with RGU and 19 with NFLGU performed a color-word Stroop task and a guessing task assessing reward/loss processing. Behavioral and functional imaging data were collected and compared between groups. RGU and NLFGU subjects showed lower Stroop effects as compared with those with IGD. RGU subjects as compared to those with IGD demonstrated less frontal cortical activation brain activation during Stroop performance. During the guessing task, RGU subjects showed greater cortico-striatal activations than IGD subjects during processing of winning outcomes and greater frontal brain during processing of losing outcomes. Findings suggest that RGU as compared with IGD subjects show greater executive control and greater activations of brain regions implicated in motivational processes during reward processing and greater cortical activations during loss processing. These findings suggest neural and behavioral features distinguishing RGU from IGD and mechanisms by which RGU may be motivated to play online games frequently yet avoid developing IGD.
Advanced Hip Osteoarthritis Causing Autonomic Dysreflexia and Severe Spasticity in a Patient With Spinal Cord Injury: A Case Report
Authors: Bickelhaupt Brittany , Richard Megan , Trbovich Michelle 
Published: March 2017

AbstractThe life expectancy of persons with spinal cord injury (SCI) is increasing due to advances in medicine and technology. As a result, there is a higher incidence of age‐associated illnesses in this population. Degenerative joint disease is a common age‐associated illness that causes pain and thus, in persons with SCI above the T6 level, can serve as a noxious stimulus to trigger autonomic dysreflexia (AD). This is a case report of severe bilateral hip osteoarthritis (OA) causing unyielding AD in a person with tetraplegia leading to bilateral girdle stone surgeries. Hip OA as an etiology for AD has not previously been reported and is important to recognize as this population continues to age and to develop age‐associated diseases.Level of EvidenceV
Leon Pinsker'sAutoemancipation!and the Emergence of German as a Language of Jewish Nationalism
Authors: Volovici Marc 
Published: March 2017

AbstractThis article examines the role of the German language in early Jewish nationalism. It focuses on the publication, reception, and afterlife of the pamphletAutoemancipation!, published in 1882 by Leon Pinsker, a Russian Jewish doctor. The first Jewish nationalist pamphlet to be written in German by a Russian Jew, its rhetoric and terminology tapped into various Jewish and European discourses of emancipation. Pinsker not only challenged the legal-political conception of emancipation as it had been commonly used in German-Jewish discourse, but also mobilized its social and revolutionary connotations, which had been associated with radical European political movements since 1848. Moreover,Autoemancipation!marked a shift in Jewish political culture with regard to the potential function of the German language. Since the late eighteenth century and through the nineteenth century, German had a controversial status in Central and Eastern European Jewish societies given its association with Jewish Enlightenment, religious reform, secularization, and assimilation. Pinsker was the first to use German as a transnational language aimed at promoting the Jewish national cause. In this respect,Autoemancipation!set in motion a process whereby German became the chief language of Jewish nationalist activism.
Finding Hope in Synthetic Biology
Authors: TAKALA TUIJA 
Published: March 2017

Abstract:For some, synthetic biology represents great hope in offering possible solutions to many of the world’s biggest problems, from hunger to sustainable development. Others remain fearful of the harmful uses, such as bioweapons, that synthetic biology can lend itself to, and most hold that issues of biosafety are of utmost importance. In this article, I will evaluate these points of view and conclude that although the biggest promises of synthetic biology are unlikely to become reality, and the probability of accidents is fairly substantial, synthetic biology could still be seen to benefit humanity by enhancing our ethical understanding and by offering a boost to world economy.
Safeguarding Confidentiality in Electronic Health Records
Authors: SHENOY AKHIL , APPEL JACOB M. 
Published: March 2017

Abstract:Electronic health records (EHRs) offer significant advantages over paper charts, such as ease of portability, facilitated communication, and a decreased risk of medical errors; however, important ethical concerns related to patient confidentiality remain. Although legal protections have been implemented, in practice, EHRs may be still prone to breaches that threaten patient privacy. Potential safeguards are essential, and have been implemented especially in sensitive areas such as mental illness, substance abuse, and sexual health. Features of one institutional model are described that may illustrate the efforts to both ensure adequate transparency and ensure patient confidentiality. Trust and the therapeutic alliance are critical to the provider–patient relationship and quality healthcare services. All of the benefits of an EHR are only possible if patients retain confidence in the security and accuracy of their medical records.
Reversing the Marginalization of Global Environmental Politics in International Relations: An Opportunity for the Discipline
Authors: Green Jessica F. , Hale Thomas N. 
Published: March 2017

ABSTRACT
Despite the increasing urgency of many environmental problems, environmental politics remains at the margins of the discipline. Using data from the Teaching, Research, and International Policy (TRIP) project, this article identifies a puzzle: the majority of international relations (IR) scholars find climate change among the top three most important policy issues today, yet fewer than 4% identify the environment as their primary area of research. Moreover, environmental research is rarely published in top IR journals, although there has been a recent surge in work focused on climate change. The authors argue that greater attention to environmental issues—including those beyond climate change—in IR can bring significant benefits to the discipline, and they discuss three lines of research to correct this imbalance.
The Role of Social Group Membership on Classroom Participation
Authors: Yaylacı Şule , Beauvais Edana 
Published: March 2017

ABSTRACTActive and cooperative learning is integral to many social science classes, as it increases student motivation, improves communication skills, and stimulates creative thinking. Many political science departments break large lectures down into smaller, weekly tutorial groups to foster active learning. But do all students participate equally in active, participatory learning? We use an original dataset measuring self-reported participation and a number of important predictors (student gender, race, and language proficiency) collected from 700 undergraduate students in 91 political science tutorials. We find that participation does vary across social groups, even when controlling for psychological and some contextual factors. Female students participate significantly less than males, racial minorities report speaking less frequently than white students, and students with lower English-proficiency (the language of instruction) also participate less. In light of these findings, we offer suggestions for instructors on how to motivate all students to find their voice in the classroom.
e-MERLIN Radio Continuum Measurements of OB Star Winds in CYG OB2
Authors: Morford Jack , Prinja Raman , Fenech Danielle 
Published: March 2017

AbstractHere, we report on the first results from the e-MERLIN Cyg OB2 Radio Survey (COBRaS), which is designed to exploit e-MERLIN’s enhanced capabilities to conduct deep-field mapping of the tremendously rich Cyg OB2 association. The project aims to deliver the most detailed radio census of the most massive OB association in the northern hemisphere. There exists considerable evidence for clumping in the winds of hot stars, which has hugely important consequences for mass-loss determinations. The amount of mass lost from a massive star is a crucial parameter required for stellar and cluster evolution models that are paramount to our understanding of the formation and evolution of massive star clusters. Presenting some of the first 20cm (L band) detections of massive stars in Cyg OB2, both accurate mass-loss determinations and constraints upon clumping within their winds are made. These data substantially increase the observational detections of the outer wind of massive stars and in combination with other observations at different wavelengths, COBRaS will greatly advance our knowledge of clumping as a function of radial distance around massive stars.
Evolved massive stars in W33 and in GMC G23.3 − 0.3
Authors: Messineo M. , Clark J. S. , Figer D. F. , Menten K. M. , Kudritzki R.-P. , Najarro F. , Rich R. M. , Ivanov V. D. , Valenti E. , Trombley C. , Chen C.-H. R. , Davies B. , MacKenty J. W. 
Published: March 2017

AbstractWe conducted infrared spectroscopic observations of bright stars in the direction of the molecular clouds W33 and GMC G23.3 − 0.3. We compared stellar spectro-photometric distances with parallactic distances to these regions, and we were able to assess the association of the detected massive stars with these molecular complexes. The spatial and temporal distributions of the detected stars enabled us to locate sources of ionizing radiation and to gather precise information on the star formation history of these clouds. The studied clouds present different distributions of massive stars.
Evidence for the non-destruction of the Most Massive Molecular Clouds even after they have given Birth to Massive Star Clusters
Authors: Zaragoza-Cardiel J. , Beckman J. , Font J. , Camps-Fariña A. , García-Lorenzo B. , Serrano-Borlaff A. 
Published: March 2017

AbstractWe have combined observations of the Antennae galaxies from the radio interferometer ALMA and from the optical interferometer GHαFaS (Galaxy Hα Fabry-Perot System). The two sets of observations have comparable angular and spectral resolutions, enabling us to identify 142 giant molecular clouds (GMCs) and 303 Hii regions. We have measured, and compared, their basic physical properties (radius, velocity dispersion, luminosity). We study the mass functions of Hii regions and GMCs, where a double population of Hii regions due to a double population of GMCs is found. Using the velocity dispersion measurements, we claim that the difference between the regimes is the nature of the dominant binding force. For the regions in the lower mass range, the dominant force is the external pressure, while in the higher mass range it is the internal gravity of the clouds. We have applied the same method to similar observations (GHαFaS & ALMA) of Arp 236 and NGC 1614 finding similar results.
Stellar feedback from a massive Super Star Cluster in the Antennae merger
Authors: Herrera Cinthya N. , Boulanger Francois 
Published: March 2017

AbstractStellar feedback from massive stars can unbind and disperse large amount of molecular gas, affecting the star formation efficiency. Based on ALMA and VLT observations in the Antennae galaxies we study a massive (~ 107 M⊙) and young (~ 3 Myr) SSC, B1, associated with compact molecular and ionized emission, which suggests that it is embedded in its parent cloud. However, we found contradictories and puzzling results on the structure and dynamics of the matter around the cluster, indicating that SSC B1 is not embedded in its parent cloud after all. We propose that radiation pressure was highly enhanced at the early stages of the SSC formation, disrupting the parent cloud in < 3 Myr. We show evidences of outflowing gas from the parent cloud in the more extended CO gas. Higher angular resolution observations are needed to validate this interpretation and to understand the origin and fate of the component seen to be associated with SSC B1.
Self-shielding clumps in starburst clusters
Authors: Palouš Jan , Wünsch Richard , Ehlerová Soňa , Tenorio-Tagle Guillermo 
Published: March 2017

AbstractYoung and massive star clusters above a critical mass form thermally unstable clumps reducing locally the temperature and pressure of the hot 107 K cluster wind. The matter reinserted by stars, and mass loaded in interactions with pristine gas and from evaporating circumstellar disks, accumulate on clumps that are ionized with photons produced by massive stars. We discuss if they may become self-shielded when they reach the central part of the cluster, or even before it, during their free fall to the cluster center. Here we explore the importance of heating efficiency of stellar winds.
Bayesian Inference of Kinematics and Mass Segregation of Open Cluster
Authors: Shao Z. , Xie X. , Chen L. , Zhong J. , Hou J. , Lin C-C. 
Published: March 2017

AbstractBased on the Bayesian Inference (BI) method, the Mixture-Model approach is improved to combine all kinematic data, including the coordinative position($\vec{x}$), proper motion ($\vec{\mu}$) and radial velocity(v), to separate the motion of the cluster from field stars, as well as to determine the intrinsic kinematic status and dynamical effects of the cluster, such as the mass segregation, anisotropy etc.. Meanwhile, the membership probability of individual stars are estimated as by product results. This method has been testified by simulation of toy models and also successfully used for well studied open clusters, such as M67 and NGC188. It is expected to largely help the studies of open clusters while combine the coming GAIA data.
Bimodal regime in young massive clusters leading to subsequent stellar generations
Authors: Wünsch Richard , Palouš Jan , Tenorio-Tagle Guillermo , Muñoz-Tuñón Casiana , Ehlerová Soňa 
Published: March 2017

AbstractMassive stars in young massive clusters insert tremendous amounts of mass and energy into their surroundings in the form of stellar winds and supernova ejecta. Mutual shock-shock collisions lead to formation of hot gas, filling the volume of the cluster. The pressure of this gas then drives a powerful cluster wind. However, it has been shown that if the cluster is massive and dense enough, it can evolve in the so–called bimodal regime, in which the hot gas inside the cluster becomes thermally unstable and forms dense clumps which are trapped inside the cluster by its gravity. We will review works on the bimodal regime and discuss the implications for the formation of subsequent stellar generations. The mass accumulates inside the cluster and as soon as a high enough column density is reached, the interior of the clumps becomes self-shielded against the ionising radiation of stars and the clumps collapse and form new stars. The second stellar generation will be enriched by products of stellar evolution from the first generation, and will be concentrated near the cluster center.
Variability Survey of ω Centauri in the Near-IR: Period-Luminosity Relations
Authors: Navarrete C. , Catelan M. , Contreras Ramos R. , Gran F. , Alonso-García J. , Dékány I. 
Published: March 2017

Abstractω Centauri is by far the most massive globular star cluster in the Milky Way, and possibly the remnant of a dwarf galaxy. As such, it contains a large number of variable stars of different classes. Here we report on an extensive, wide-field time-series study of ω Cen in the J and KS bands, which has allowed us to study the near-IR period-luminosity relations for different variability classes, including the first such relations for the SX Phoenicis stars.
Contribution of globular clusters to halos
Authors: Bragaglia Angela 
Published: March 2017

AbstractThe contribution of massive star clusters to their hosting halo dramatically depends on their formation mechanism and their early evolution. Massive globular clusters in the Milky Way (and in other galaxies) have been shown to display peculiar chemical patterns (light-elements correlations and anti-correlations) indicative of a complex star formation, confirmed by photometric evidence (spread or split sequences). I use these chemical signatures to try to understand what is the fraction of halo stars originally born in globular clusters.