bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Simple and Highly Stable Porous Gold‐based Electrochemical Sensor for Bisphenol A Detection
Authors: Wannapob Rodtichoti , Thavarungkul Panote , Dawan Supaporn , Numnuam Apon , Limbut Warakorn , Kanatharana Proespichaya 
Published: August 2016

AbstractA porous gold electrode with a uniform pore size was prepared by a simple single potential step method. It provided around 19 times more surface area than a bare gold electrode. The porous gold electrode, without any modification, exhibited good electrocatalytic activity towards the oxidation of bisphenol A (BPA). The effect of the pH and scan rate, on the porous gold electrode was studied and discussed. Under optimum conditions of the flow system, the calibration plot of BPA was linear over a wide range of concentration, from 2.0 nM to 800 nM (R2=0.999), and the detection limit was 2.0 nM (s/n=3). It was of interest that, the porous gold electrode showed an exceptional result in minimizing the fouling from the oxidation product of BPA and led to a very high operational stability of the electrode for the detection of BPA (560 consecutive times). The porous gold electrode showed good fabrication reproducibility and can be used to detect bisphenol A that leached from baby bottles and drinking water bottles. The obtained results were in good agreement with the GC‐MS method (P>0.05).
High‐sensitive Electrochemical Determination of Ethyl Carbamate Using Urethanase and Glutamate Dehydrogenase Modified Electrode
Authors: Zhang Zhiwei , Lu Xiaoxia , Tian Yaping , Zhou Nandi 
Published: August 2016

AbstractAn amperometric biosensor for ethyl carbamate (EC) was developed for the first time through the cascade reactions of urethanase and glutamate dehydrogenase (GLDH). Urethanase decomposes ethyl carbamate to produce ammonia, which converts to L‐glutamate under the catalysis of GLDH in the presence of α‐ketoglutarate and NADH. Then the change of NADH can be detected chronoamperometrically. The two enzymes were entrapped into chitosan/gelatine/γ‐glycidoxy propyl trimethoxy silane sol‐gel and immobilized on the surface of pyrolytic graphite electrode (PGE). The modified electrode was characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Under the optimized conditions, the amperometric EC biosensor exhibits a linear detection range from 0.5 to 40 μM with a low detection limit of 5.30 nM. The biosensor was successfully used to detect EC in mimic Chinese rice wine samples, and satisfactory recovery and relative standard deviation were achieved.
Scalable Coating of Single‐Source Nickel Hexadecanethiolate Precursor on 3D Graphitic Petals for Asymmetric Supercapacitors
Authors: Gupta Ritu , Fisher Timothy S. 
Published: August 2016

AbstractA hybrid Ni‐based pseudocapacitive coating consisting of NiO–Ni3S4 on graphene petals is studied as an efficient electrode for supercapacitor applications. A single‐source precursor of Ni is synthesized for coating on graphene petals supported on conducting carbon cloth as the current collector. The loading of Ni hexadecanethiolate on graphene petals surface is optimized with respect to electrochemical performance in terms of specific capacitance. The hybrid electrode gives high specific capacitance (≈2360 F g−1) and stability over 5000 cycles. Importantly, this coating process of Ni‐based pseudocapacitive layer can be readily deployed in roll‐to‐roll (R2R) processes.
Development of Combustion Technology for Methane Emitted from Coal‐Mine Ventilation Air Systems
Authors: Setiawan Adi , Kennedy Eric M. , Stockenhuber Michael 
Published: August 2016

AbstractFugitive gas emissions from coal mining are widely known to be significant contributors to the emission of alkanes, mainly methane, to the environment. Utilization of coal‐mine ventilation air methane (VAM) is a crucial mission to minimize methane emission in the atmosphere. This paper reviews current technology for mitigation and utilization of methane emissions from coal mining. Challenges and opportunities for each technology are discussed together with their benefits/disadvantages. Catalytic combustion technology is recommended as the best option due to the low and variable concentration of methane in coal‐mine ventilation air, as well as its high volumetric flow. Herein, current developments in flameless combustion are discussed in detail with a few highlights on palladium‐based catalyst development. The remaining uncertainties and obstacles in the development of palladium‐based catalysts for VAM are also discussed. This paper highlights a few important practical aspects that necessitate further detailed investigation, such as catalyst deactivation phenomena, the stability of the catalyst under humid conditions, and the effect of coal dust on catalytic activity and stability. Notably, a pressure decrease, heat recovery/self‐sustaining, and long‐term deactivation are key for the successful development of VAM catalytic combustors.
Mechanical Properties of Supports and Half‐Cells for Solid Oxide Electrolysis Influenced by Alumina‐Zirconia Composites
Authors: Charlas B. , Ni D. W. , Frandsen H. L. , Brodersen K. , Chen M. 
Published: August 2016

AbstractIn order to improve the durability and robustness of solid oxide electrolysis cells (SOEC) and stacks, it is necessary to improve the strength of its components. In cathode supported SOEC, the main structural component is the Ni(O)‐YSZ support. But the strength of the half‐cell or cell is also determined by the strength of other weaker components and by the residual stress state induced by the thermal expansion mismatch.In this study, the mechanical properties of Ni(O)‐3YSZ supports with a reference composition and with substitution of 3YSZ by 20A3YSZ (3YSZ with 20 wt.% Al2O3) have been tested and compared. The initial interest of this substitution are a decrease of the coefficient of thermal expansion (CTE) mismatch within the half‐cell and the fact that 20A3YSZ is stronger than 3YSZ.The influence of the process on the composition, strength, elastic properties and electrical conductivity of the supports have been measured and analyzed. The short and long‐term evolution of these properties is linked to the formation of a NiAl2O4 phase. The samples properties were measured at room temperature or high temperature (800 °C) and in oxidized or reduced conditions. The impact of these supports on residual stresses and strength of half‐cells is also discussed.
Acellular mineral deposition within injectable, dual‐gelling hydrogels for bone tissue engineering
Authors: Vo Tiffany N. , Tatara Alexander M. , Santoro Marco , van den Beucken Jeroen J. J. P. , Leeuwenburgh Sander C. G. , Jansen John A. , Mikos Antonios G. 
Published: August 2016

AbstractThis study sought to characterize the composition and morphology of acellular mineralization occurring in thermally and chemically gelable hydrogels comprising copolymers of hydrophobic N‐isopropylacrylamide as a function of hydrogel hydrophobicity and culture medium formulation. The deposition of calcium phosphate (CaP) mineral was hypothesized to occur with increasing hydrogel hydrophobicity and presence of serum proteins in the culture medium. Two hydrogel compositions with a solid content of 15 and 20 wt % were examined in serum‐containing and nonserum‐containing media for 0, 14, 28, and 56 days. Using biochemical assays, calcium, but not phosphate content, was found to significantly increase over time in hydrophobic hydrogels soaked in cell culture medium with fetal bovine serum. Significant increases in the calcium to phosphate ratio were observed within these hydrogels from day 0 to 56, with mineralization indicated by von Kossa histological staining. X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy/energy dispersive X‐ray spectroscopy (SEM/EDX) were used to analyze CaP mineral characteristics. No crystalline apatitic reflection peaks were observed using XRD, which was supported by the lack of observable mineral deposits as observed using SEM/EDX. However, FTIR showed the presence of new absorption peaks in the serum‐containing samples at 28 and 56 days which suggested the formation of an immature apatitic‐like mineral. The ability to undergo hydrophobicity‐dependent and protein‐mediated mineralization demonstrates the potential of these dual‐gelling hydrogels as acellular self‐mineralizing materials for bone tissue engineering. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 110–117, 2017.
Spatio‐temporal development of vegetation die‐off in a submerging coastal marsh
Authors: Schepers Lennert , Kirwan Matthew , Guntenspergen Glenn , Temmerman Stijn 
Published: August 2016

AbstractIn several places around the world, coastal marsh vegetation is converting to open water through the formation of pools. This is concerning, as vegetation die‐off is expected to reduce the marshes' capacity to adapt to sea level rise by vegetation‐induced sediment accretion. Quantitative analyses of the spatial and temporal development of marsh vegetation die‐off are scarce, although these are needed to understand the bio‐geomorphic feedback effects of vegetation die‐off on flow, erosion, and sedimentation. In this study, we quantified the spatial and temporal development of marsh vegetation die‐off with aerial images from 1938 to 2010 in a submerging coastal marsh along the Blackwater River (Maryland, U.S.A). Our results indicate that die‐off begins with conversion of marsh vegetation into bare open water pools that are relatively far (> 75 m) from tidal channels. As vegetation die‐off continues, pools expand, and new pools emerge at shorter and shorter distances from channels. Consequently larger pools are found at larger distances from the channels. Our results suggest that the size of the pools and possibly the connection of pools with the tidal channel system have important bio‐geomorphic implications and aggravate marsh deterioration. Moreover, we found that the temporal development of vegetation die‐off in moderately degraded marshes is similar as the spatial die‐off development along a present‐day gradient, which indicates that the contemporary die‐off gradient might be considered a chronosequence that offers a unique opportunity to study vegetation die‐off processes.
Temporal variability of nitrogen fixation and particulate nitrogen export at Station ALOHA
Authors: Böttjer Daniela , Dore John E. , Karl David M. , Letelier Ricardo M. , Mahaffey Claire , Wilson Samuel T. , Zehr Jonathan , Church Matthew J. 
Published: August 2016

AbstractWe present nearly 9 yrs (June 2005–December 2013) of measurements of upper‐ocean (0 m to 125 m) dinitrogen (N2) fixation rates, coupled with particulate nitrogen (PN) export at 150 m, from Station ALOHA (22° 45′N, 158°W) in the North Pacific Subtropical Gyre. Between June 2005 and June 2012, N2 fixation rates were measured based on adding the 15N2 tracer as a gas bubble. Beginning in August 2012, 15N2 was first dissolved into filtered seawater and the 15N2‐enriched water was subsequently added to N2 fixation incubations. Direct comparisons between methodologies revealed a robust relationship, with the addition of 15N2‐enriched seawater resulting in twofold greater depth‐integrated rates than those derived from adding a 15N2 gas bubble. Based on this relationship, we corrected the initial period of measurements, and the resulting rates of N2 fixation averaged 230 ± 136 μmol N m−2 d−1 for the full time series (n = 71). Analysis of the 15N isotopic composition of sinking PN, together with an isotope mass balance model, revealed that N2 fixation supported 26–47% of PN export during calendar years 2006–2013. The N export derived from these fractional contributions and measured N2 fixation rates ranged between 502 and 919 μmol N m−2 d−1, which are equivalent to rates of net community production (NCP) of 1.5 to 2.7 mol C m−2 yr−1, consistent with previous independent estimates of NCP at this site.
How the World Changes By Going from One‐ to Two‐Dimensional Polymers in Solution
Authors: Schlüter A. Dieter , Payamyar Payam , Öttinger Hans Christian 
Published: August 2016

Scaling behavior of one‐dimensional (1D) and two‐dimensional (2D) polymers in dilute solution is discussed with the goal of stimulating experimental work by chemists, physicists, and material scientists in the emerging field of 2D polymers. The arguments are based on renormalization‐group theory, which is explained for a general audience. Many ideas and methods successfully applied to 1D polymers are found not to work if one goes to 2D polymers. The role of the various states exhibiting universal behavior is turned upside down. It is expected that solubility will be a serious challenge for 2D polymers. Therefore, given the crucial importance of solutions in characterization and processing, synthetic concepts are proposed that allow the local bending rigidity and the molar mass to be tuned and the long‐range interactions to be engineered, all with the goal of preventing the polymer from falling into flat or compact states.image
Acid‐base properties and supramolecular structure of N‐[(hydroxymethyl)triazolyl]triflamides: DFT, ab initio, and FTIR study
Authors: Shainyan Bagrat A. , Chipanina Nina N. , Oznobikhina Larisa P. , Meshcheryakov Vladimir I. 
Published: August 2016

AbstractFor N‐{[2‐(hydroxymethyl)‐2H‐1,2,3‐triazolyl‐4‐yl]methyl}triflamide 1, N‐{[2‐(hydroxymethyl)‐2H‐1,2,3‐triazolyl‐4‐yl]methyl}‐N‐phenyltriflamide 2, and N,N‐bis{[2‐(hydroxymethyl)‐2H‐1,2,3‐triazolyl‐4‐yl]methyl}triflamide 3, the proton affinities of the triazole nitrogen atoms and the hydroxy and sulfonyl oxygen atoms as well as the energies of formation of the conformers with intramolecular H‐bonds and dimers with intermolecular NH⋯N, OH⋯N, OH⋯O═S, and NH⋯O═S H‐bonds were calculated by density functional theory and second‐order Møller‐Plesset perturbation methods. Quantum Theory of Atoms in Molecules analysis was performed to investigate the nature of H‐bonds. According to Fourier transform infrared spectroscopy, in CH2Cl2 solution, the monomeric molecules of 1 to 3 exist in the equilibrium with cyclic dimers having the OH⋯N hydrogen bonds.
An intelligent three‐phase spam filtering method based on decision tree data mining
Authors: Sheu Jyh‐Jian , Chen Yin‐Kai , Chu Ko‐Tsung , Tang Jih‐Hsin , Yang Wei‐Pang 
Published: August 2016

AbstractIn this paper, we proposed an efficient spam filtering method based on decision tree data mining technique, analyzed the association rules about spams, and applied these rules to develop a systematized spam filtering method. Our method possessed the following three major superiorities: (i) checking only an e‐mail's header section to avoid the low‐operating efficiency in scanning an e‐mail's content. Moreover, the accuracy of filtering was enhanced simultaneously. (ii) In order that the probable misjudgment in identifying an unknown e‐mail could be “reversed”, we had constructed a reversing mechanism to help the classification of unknown e‐mails. Thus, the overall accuracy of our filtering method will be increased. (iii) Our method was equipped with a re‐learning mechanism, which utilized the supervised machine learning method to collect and analyze each misjudged e‐mail. Therefore, the revision information learned from the analysis of misjudged e‐mails incrementally gave feedback to our method, and its ability of identifying spams would be improved. Copyright © 2016 John Wiley & Sons, Ltd.
An enhanced and secure trust‐extended authentication mechanism for vehicular ad‐hoc networks
Authors: Kumari Saru , Karuppiah Marimuthu , Li Xiong , Wu Fan , Das Ashok Kumar , Odelu Vanga 
Published: August 2016

AbstractVehicular Ad‐hoc Networks (VANETs) are a move towards regulating safe traffic and intelligent transportation system. A VANETs is characterized by extremely dynamic topographical conditions owing to speedily moving vehicles. In VANETs, vehicles can transmit messages within a pre‐defined area to achieve safety and efficiency of the system. Then ensuring authenticity of origin of messages to the receiver in such a dynamic environment is a crucial challenge. Another concern in VANET is preservation of privacy of user/vehicle. Recently, Chuang and Lee proposed a trust‐extended authentication mechanism (TEAM) for vehicle‐to‐vehicle communications in VANETs. TEAM not only satisfies various security features but also enhances the performance of the authentication process using transitive trust relationship among vehicles. Nonetheless, our analysis shows that TEAM is vulnerable to insider attack, privacy breach, impersonation attacks and some other problems. In this paper, to eradicate the vulnerabilities found in Chuang‐Lee's scheme, an enhanced trust‐extended authentication scheme for VANET is proposed. We display the efficiency of our scheme through security analysis and comparison. Through simulation results using widely accepted NS‐2 simulator, we show that our scheme authenticates vehicles faster than Chuang‐Lee's scheme. Copyright © 2016 John Wiley & Sons, Ltd.
Source code analysis with LDA
Authors: Binkley David , Heinz Daniel , Lawrie Dawn , Overfelt Justin 
Published: August 2016

AbstractLatent Dirichlet allocation (LDA) has seen increasing use in the understanding of source code and its related artifacts in part because of its impressive modeling power. However, this expressive power comes at a cost: The technique includes several tuning parameters whose impact on the resulting LDA model must be carefully considered. The aim of this work is to provide insights into the tuning parameters' impact. Doing so improves the comprehension of both researchers who look to exploit the power of LDA in their research and those who interpret the output of LDA‐using tools. It is important to recognize that the goal of this work isnotto establish values for the tuning parameters because there is no universalbest setting. Rather, appropriate settings depend on the problem being solved, the input corpus (in this case, typically words from the source code and its supporting artifacts), and the needs of the engineer performing the analysis. This work's primary goal is to aid software engineers in their understanding of the LDA tuning parameters by demonstrating numerically and graphically the relationship between the tuning parameters and the LDA output. A secondary goal is to enable more informed setting of the parameters. Copyright © 2016 John Wiley & Sons, Ltd.
Allylic Alkylations with Enamine Nucleophiles
Authors: Butt Nicholas , Yang Guoqiang , Zhang Wanbin 
Published: August 2016

AbstractAllylic alkylation reactions are some of the most important carbon‐carbon bond forming reactions in organic synthesis. In particular, the alkylation of carbonyl substrates provides an efficient pathway to structurally diverse molecules. Such reactions predominantly rely on the in situ generation of a nucleophilic enamine intermediate. This brief personal account describes research carried out in our group concerning the Pd‐catalyzed allylic alkylation of carbonyl compounds using these species. Our methodology combines Pd‐catalysis with metallocene ligands to carry out these transformations.
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Equity, barriers and cancer disparities: study of the Spanish Society of Medical Oncology on the access to oncologic drugs in the Spanish Regions
Authors: Salvador J. , Urtasun J. A. , Duart F. J. B. , García-Campelo R. , Carbonero R. G. , Lianes P. , Llombart A. , Casado D. I. , Piera J. M. , Mateu M. M. , Puente J. , Rivera F. , Rodríguez C. A. , Virizuela J. A. , Martín M. , Garrido P. 
Published: August 2016

Abstract

Purpose
The Spanish Society of Medical Oncology (SEOM) has conducted a study on the access to oncologic drugs across the 17 Spanish Regions with the aim of identifying potential heterogeneities and making proposals for eliminating the barriers identified at the different levels.

Methods
An Expert Panel made up of medical oncologists designed a survey on certain indications approved for 11 drugs in the approach of breast cancer, melanoma, lung cancer, prostate cancer and support treatment. This survey was sent to 144 National Health System (NHS) hospitals.

Results
77 hospitals answered the survey. The information modules analysed were: scope of the Commission that establishes binding decisions related to drug access; conditions, stages and periods of drug application, approval and administration processes; barriers to accessing drugs.

Conclusions
The study shows variability in drug access. The SEOM makes proposals addressed to reducing the differences identified and homogenizing drug access conditions.
Sexual Function is Correlated with Body Image and Partnership Quality in Female University Students
Authors: Wallwiener Stephanie , Strohmaier Jana , Wallwiener Lisa-Maria , Schönfisch Birgitt , Zipfel Stephan , Brucker Sara Y. , Rietschel Marcella , Wallwiener Christian W. 
Published: August 2016

ABSTRACT

Introduction
According to the World Health Organization definition, sexual health is more than mere physical sexual function; it also encompasses emotional, mental, and social well-being in relation to sexuality and is not merely the absence of dysfunction or disease. In line with this definition, various studies have reported that female sexual function is associated with partnership quality, body image, and body self-acceptance.

Aim
To investigate whether female sexual function is influenced by (i) body self-acceptance and (ii) partnership quality, as important factors in psychosocial well-being, and (iii) whether the effects of body self-acceptance are moderated by partnership quality.

Methods
In total, 2,685 female medical students no older than 35 years from Germany, Austria, and Switzerland completed an anonymous online questionnaire comprising the Female Sexual Function Index (FSFI) and the Self-Acceptance of the Body Scale. Respondents were asked to state whether they had been in a steady partnership in the preceding 6 months. When present, the quality of the partnership status was rated (enamoredness, love, friendship, or conflicted). To determine correlations, group differences, and moderating effects among body self-acceptance, partnership quality, and sexual function, the data were analyzed using Spearman correlations, Kruskal-Wallis tests, and analyses of variance.

Main Outcome Measures
Female sexual function (FSFI total score).

Results
(i) In sexually active women, higher FSFI scores were significantly associated with greater body self-acceptance and a steady partnership during the preceding 6 months. (ii) Total FSFI scores were highest in women who described their partnership as enamored (29.45) or loving (28.55). Lower scores were observed in single women (26.71) and in women who described their partnerships as friendship (25.76) or as emotionally conflicted (23.41). (iii) Total FSFI score was affected by an interaction between body self-acceptance and partnership quality. Body self- acceptance was positively associated with FSFI total scores, particularly in single women and women in emotionally conflicted partnerships.

Conclusion
Our findings suggest that in young women, body self-acceptance and partnership quality are positively associated with better sexual function, and that high body self-acceptance might buffer the negative impact on sexual function of partnership quality. The present data suggest that psychological interventions to improve the body image of younger women can positively affect sexual function and thereby improve sexual health.