bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: (NH4) 4Sn2S6·3H2O: Crystal Structure, Thermal Decomposition, and Precursor for Textured Thin Film.
Authors: Noerby Peter , Overgaard Jacob , Christensen Per S. , Richter Bo , Song Xin , Dong Mingdong , Han Anpan , Skibsted Joergen , Iversen Bo B. , Johnsen Simon 
Published: October 2014

Abstract(NH4) 4Sn2S6·3H2O (I) as a more environmentally friendly alternative to the hydrazinium analogue in solution processed advanced Sn(IV) sulfide based films for electronic devices.
ChemInform Abstract: State of the Art of Single‐Walled Carbon Nanotube Synthesis on Surfaces
Authors: Chen Yabin , Zhang Yingying , Hu Yue , Kang Lixing , Zhang Shuchen , Xie Huanhuan , Liu Dan , Zhao Qiuchen , Li Qingwen , Zhang Jin 
Published: October 2014

AbstractReview: 187 refs.
ChemInform Abstract: Lewis Base Catalysis of Three n—π* Mediated Reactions with N‐Heterocyclic Carbenes (NHCs), Isothioureas, Bicyclic Tertiary Amines, and Electron‐Rich Pyridyls
Authors: Candish Lisa , Nakano Yuji , Lupton David W. 
Published: October 2014

AbstractReview: [74 refs.
ChemInform Abstract: Recent Syntheses of 1,2,3,4‐Tetrahydroquinolines, 2,3‐Dihydro‐4(1H)‐quinolinones and 4(1H)‐Quinolinones Using Domino Reactions
Authors: Nammalwar Baskar , Bunce Richard A. 
Published: October 2014

AbstractReview: 134 refs.
ChemInform Abstract: Cyclodextrin‐Based Systems for the Stabilization of Metallic(0) Nanoparticles and Their Versatile Applications in Catalysis
Authors: Noel Sebastien , Leger Bastien , Ponchel Anne , Philippot Karine , Denicourt‐Nowicki Audrey , Roucoux Alain , Monflier Eric 
Published: October 2014

AbstractReview: 74 refs.
ChemInform Abstract: Protein Interactions with Polymer Coatings and Biomaterials
Authors: Wei Qiang , Becherer Tobias , Angioletti‐Uberti Stefano , Dzubiella Joachim , Wischke Christian , Neffe Axel T. , Lendlein Andreas , Ballauff Matthias , Haag Rainer 
Published: October 2014

AbstractReview: recent developments in analytical, biochemical, and theoretical techniques that lead to a better understanding of polymeric biomaterials for applications as bioinert and biospecific surface coating materials in biomedical systems; 292 refs.
A Novel Technology for Natural Gas Conversion by Means of Integrated Oxidative Coupling and Dry Reforming of Methane
Authors: Thybaut Joris W. , Marin Guy B. , Mirodatos Claude , Schuurman Yves , van Veen Andre C. , Sadykov Vladislav A. , Pennemann Helmut , Bellinghausen Rainer , Mleczko Leslaw 
Published: October 2014

AbstractA novel process concept for the oxidative coupling of methane followed by the oligomerization to liquids has been developed within the frame of the EU integrated project OCMOL. This technology is based on process intensification principles via cutting‐edge structured microreactor technology. It is also a fully integrated industrial process through the re‐use and the recycling of by‐products, in particular CO2, at every process stage. The focus of this contribution is on the reaction engineering aspects of the core steps, i.e., catalysts, kinetics and reactor design for the methane coupling and reforming.
General β‐Jacobi Corners Process and the Gaussian Free Field
Authors: Borodin Alexei , Gorin Vadim 
Published: October 2014

AbstractWe prove that the two‐dimensional Gaussian free field describes the asymptotics of global fluctuations of a multilevel extension of the general β‐Jacobi random matrix ensembles. Our approach is based on the connection of the Jacobi ensembles to a degeneration of the Macdonald processes that parallels the degeneration of the Macdonald polynomials to the Heckman‐Opdam hypergeometric functions (of type A). We also discuss the β → ∞ limit. © 2015 Wiley Periodicals, Inc.
Billion‐Fold Enhancement in Sensitivity of Nuclear Magnetic Resonance Spectroscopy for Magnesium Ions in Solution
Authors: Gottberg Alexander , Stachura Monika , Kowalska Magdalena , Bissell Mark L. , Arcisauskaite Vaida , Blaum Klaus , Helmke Alexander , Johnston Karl , Kreim Kim , Larsen Flemming H. , Neugart Rainer , Neyens Gerda , Garcia Ruiz Ronald F. , Szunyogh Daniel , Thulstrup Peter W. , Yordanov Deyan T. , Hemmingsen Lars 
Published: October 2014

Abstractβ‐nuclear magnetic resonance (NMR) spectroscopy is highly sensitive compared to conventional NMR spectroscopy, and may be applied for several elements across the periodic table. β‐NMR has previously been successfully applied in the fields of nuclear and solid‐state physics. In this work, β‐NMR is applied, for the first time, to record an NMR spectrum for a species in solution.31Mg β‐NMR spectra are measured for as few as 107magnesium ions in ionic liquid (EMIM‐Ac) within minutes, as a prototypical test case. Resonances are observed at 3882.9 and 3887.2 kHz in an external field of 0.3 T. The key achievement of the current work is to demonstrate that β‐NMR is applicable for the analysis of species in solution, and thus represents a novel spectroscopic technique for use in general chemistry and potentially in biochemistry.
Simplified quasi‐Z source indirect matrix converter
Authors: Liu Shuo , Ge Baoming , Jiang Xinjian , Abu‐Rub Haitham , Peng Fang Zheng 
Published: October 2014

SummaryConventional matrix converters have a limited voltage gain less than 0.866 and also require many power switches and additional input filter that ensures a low input current harmonics to the grid. Quasi‐Z source (qZS) indirect matrix converter can provide high voltage gain and ensure a sinusoidal input current without additional input filter, which requires 12 power switches in rectifier stage. In this paper, a simplified qZS indirect matrix converter is proposed to overcome aforementioned limitations and achieve (1) higher voltage gain than 0.866, (2) less power switches, and (3) LC‐filter function integrated in qZS network to avoid additional filter. The new converter's operating principle and equivalent circuits are analyzed, and the modulation method is presented. The input current closed‐loop control is employed to implement sinusoidal input current waveform even though the proposed converter has less power switches and without extra input filter. A test bench is used to verify the simplified qZS indirect matrix converter and control methods. Simulation and experimental results identically validate the proposed converter system with wide voltage gain range and low input current harmonics. Copyright © 2014 John Wiley & Sons, Ltd.
An improved password‐based authentication scheme for session initiation protocol using smart cards without verification table
Authors: Farash Mohammad Sabsinejad 
Published: October 2014

SummaryAuthentication schemes have been widely deployed access control and mobility management in various communication networks. Especially, the schemes that are based on multifactor authentication such as on password and smart card come to be more practical. One of the standard authentication schemes that have been widely used for secure communication over the Internet is session initiation protocol (SIP). The original authentication scheme proposed for SIP was vulnerable to some crucial security weaknesses. To overcome the security problems, various improved authentication schemes have been developed, especially based on elliptic curve cryptography (ECC). Very recently, Zhang et al. proposed an improved authentication scheme for SIP based on ECC using smart cards to overcome the security flaws of the related protocols. Zhang et al. claimed that their protocol is secure against all known security attacks. However, this paper indicates that Zhang et al. protocol is still insecure against impersonation attack. We show that an active attacker can easily masquerade as a legal server to fool users. As a remedy, we also improve Zhang et al. protocol by imposing a little extra computation cost. Copyright © 2014 John Wiley & Sons, Ltd.
A prediction model for sudden cardiac death in patients with heart failure and preserved ejection fraction
Authors: Adabag Selcuk , Rector Thomas S. , Anand Inder S. , McMurray John J. , Zile Michael , Komajda Michel , McKelvie Robert S. , Massie Barry , Carson Peter E. 
Published: October 2014

AimsSudden cardiac death (SCD) accounts for ∼ 25% of all deaths in heart failure with preserved ejection fraction (HFpEF). However, strategies to identify HFpEF patients at a higher risk of SCD have not been developed.Methods and resultsWe studied 4128 patients with HFpEF enrolled in the Irbesartan in Patients with Heart Failure and Preserved Ejection Fraction (I‐PRESERVE) trial. All SCDs were adjudicated by a clinical endpoint committee. Cumulative incidences of SCD were estimated counting other deaths as competing risks. Cox regression analysis was used to generate a risk model for SCD. During a mean follow‐up of 4.1 years, 231 (5.6%) patients died suddenly and 650 (15.7%) died non‐suddenly. A multivariable model in 3480 patients including age, gender, history of diabetes and myocardial infarction, LBBB on ECG, and the natural logarithm of NT‐proBNP identified a subgroup of 837 (24%) patients with ≥10% cumulative incidence of SCD over 5 years, accounting for other deaths as competing risk (Harrell's C index 0.75). The 5‐year cumulative incidences of SCD in the higher and lower risk groups were 11% and 4%, respectively. In the higher risk group, 32% of deaths were SCD compared with 26% in the entire I‐PRESERVE cohort.ConclusionsA multivariable prediction model identified patients with HFpEF who have a ≥10% risk of SCD over 5 years, similar to the risk of SCD in the Sudden Cardiac Death in Heart Failure (SCD‐Heft) trial. This model may be useful for selecting patients with HFpEF for SCD prevention trials.
An Insight into the Complexation of Pyrazine‐Functionalized Calix[4]arenes with Am3+ and Eu3+ – Solvent Extraction and Luminescence Studies in Room‐Temperature Ionic Liquids
Authors: Ansari Seraj A. , Mohapatra Prasanta K. , Sengupta Arijit , Nikishkin Nicolai I. , Huskens Jurriaan , Verboom Willem 
Published: October 2014

AbstractThe complexation behaviour of six pyrazine‐functionalized calix[4]arenes, containing substituents such as carbamoyl dioctyl (L‐1, L‐2), diisopropyl phosphonate (L‐3, L‐4) and diphenyl phosphoryl (L‐5, L‐6), with Am3+ and Eu3+ ions was investigated by solvent extraction as well as by luminescence spectroscopy (only for Eu3+) in room‐temperature ionic liquids (RTILs), [Cnmim][NTf2] (1‐alkyl‐3‐methylimidazolium, n = 4, 6, and 8). The spectacular enhancement in the extraction values of the trivalent metal ions in RTILs, as compared to those reported in a molecular diluent from 3 M HNO3, was rather unusual and was further investigated by luminescence studies. Luminescence studies involving Eu3+ and performed with L‐4 and L‐6 confirmed the 1:1 stoichiometry of the extracted species (Eu3+ L) with log β values of 4.42 ± 0.51 and 5.18 ± 0.38 for L‐4 and L‐6, respectively. Judd–Ofelt parameters, which give information about the nature of bonding as well as the coordinating environment, were computed from the emission spectra of the Eu3+ L‐4 and Eu3+ L‐6 complexes.
RhIII‐Catalysed Hydrazine‐Directed C(sp2)–H Amination of Phenidones with N‐Alkyl‐O‐benzoyl‐hydroxylamines
Authors: Xue Yu , Fan Zhoulong , Jiang Xiaolong , Wu Kui , Wang Meining , Ding Chunyong , Yao Qizheng , Zhang Ao 
Published: October 2014

AbstractA RhIII‐catalysed ortho C–H amination of phenidones under mild conditions was developed using N‐alkyl‐O‐benzoyl‐hydroxylamines as aminating agents, and with a cyclic hydrazine moiety as a directing group, yields of up to 97 % and a high functional group tolerance were observed. This strategy offers an alternative route for the synthesis of amino analogues of the 5‐lipoxygenase inhibitor phenidone, and the products are valuable for further functional group transformations.
Synthesis of β‐Lapachone, a Potential Anticancer Agent from the Lapacho Tree
Authors: Katoh Takeru , Monma Hiromitsu , Wakasugi Jun , Narita Koichi , Katoh Tadashi 
Published: October 2014

AbstractA pharmaceutically important natural product, β‐lapachone, was efficiently synthesized in four steps in 70 % overall yield starting from commercially available 1,4‐naphthoquinone. The key step of the synthesis was the direct conversion of 2‐prenyl‐1,4‐naphthoquinone into β‐lapachone through an advantageous cyclization/hydration/oxidation cascade process.
Review of Smartphone Applications for the Treatment of Eating Disorders
Authors: Juarascio Adrienne S. , Manasse Stephanie M. , Goldstein Stephanie P. , Forman Evan M. , Butryn Meghan L. 
Published: October 2014

AbstractmHealth tools may be a feasible modality for delivering evidence‐based treatments and principles (EBPs), and may enhance treatment for eating disorders (EDs). However, research on the efficacy of mHealth tools for EDs and the extent to which they include EBPs is lacking. The current study sought to (i) review existing apps for EDs, (ii) determine the extent to which available treatment apps utilize EBPs, and (iii) assess the degree to which existing smartphone apps utilize recent advances in smartphone technology. Overall, existing ED intervention apps contained minimal EBPs and failed to incorporate smartphone capabilities. For smartphone apps to be a feasible and effective ED treatment modality, it may be useful for creators to begin taking utilizing the abilities that set smartphones apart from in‐person treatment while incorporating EBPs. Before mHealth tools are incorporated into treatments for EDs, it is necessary that the feasibility, acceptability, and efficacy be evaluated. Copyright © 2014 John Wiley & Sons, Ltd and Eating Disorders Association.
Elevated major ion concentrations inhibit larval mayfly growth and development
Authors: Johnson Brent R. , Weaver Paul C. , Nietch Christopher T. , Lazorchak James M. , Struewing Katherine A. , Funk David H. 
Published: October 2014

Abstract

Anthropogenic disturbances, including those from developing energy resources, can alter stream chemistry significantly by elevating total dissolved solids. Field studies have indicated that mayflies (Order Ephemeroptera) are particularly sensitive to high total dissolved solids. In the present study, the authors measured 20-d growth and survivorship of larval Neocloeon triangulifer exposed to a gradient of brine salt (mixed NaCl and CaCl2) concentrations. Daily growth rates were reduced significantly in all salt concentrations above the control (363 µS cm−1) and larvae in treatments with specific conductance &gt;812 µS cm−1 were in comparatively earlier developmental stages (instars) at the end of the experiment. Survivorship declined significantly when specific conductance was &gt;1513 µS cm−1 and the calculated 20-d 50% lethal concentration was 2866 µS cm−1. The present study's results provide strong experimental evidence that elevated ion concentrations similar to those observed in developing energy resources, such as oil and gas drilling or coal mining, can adversely affect sensitive aquatic insect species. Environ Toxicol Chem 2015;34:167–172. © 2014 SETAC
A novel contact prediction‐based routing scheme for DTNs
Authors: Zhang Lichen , Wang Xiaoming , Lu Junling , Ren Meirui , Duan Zhuojun , Cai Zhipeng 
Published: October 2014

AbstractDelay/disruption tolerant networks (DTNs) make opportunistic communications by utilising the mobility of nodes. The characteristics of high mobility of nodes and high dynamicity of network topology result in an absence of instantaneous end‐to‐end path from any source to a destination and thus make routing a challenge in DTNs. To deal with this issue, researchers have investigated a variety of routing schemes for DTNs based on the prediction of future contacts, in which node mobility is explored and used. However, the previous works did not consider the instant contact information such as the last contact duration time and the instant separation time since the last contact whilst making routing decisions, leading to less prediction accuracy of future contacts and thus worse routing performance. In this paper, a novel contact prediction‐based routing scheme is proposed for DTNs to increase delivery ratio by considering the instant contact information. Specifically, to predict the contact probability of two nodes accurately, the statistical contact information, the instant contact information and the contact transitivity are comprehensively considered. The simulation evaluations show that the proposed contact prediction‐based routing substantially improves delivery ratio and reduces delivery latency and delivery overhead compared with traditional DTN routing schemes. Copyright © 2014 John Wiley & Sons, Ltd.
Quantitative investigation of air gaps entrapped in multilayer thermal protective clothing in low‐level radiation at the moisture condition
Authors: Fu Ming , Weng Wenguo , Yuan Hongyong 
Published: October 2014

SummaryThe effects of air gaps entrapped within the multilayer protective clothing system on the thermal performance were studied during low‐level radiation (2–10 kW/m2). A bench‐scale apparatus was designed to produce the liquid droplets and simulate human sweat transferring through the multilayer fabric system. Two air gaps located between the outer shell and the moisture barrier (Gap A) and between the moisture barrier and the thermal liner (Gap B) were used with different gap sizes (0, 2, and 5 mm). The thermal resistance analysis for the heat transfer with a multilayer flat wall was used to interpret the effects of air gap. The results show that the total thermal resistance of a multilayer clothing system and the thermal resistances of the two air gaps are linearly related with the level of heat flux. It is also indicated that the air gap position affects the beneficial effect of the gap size. The effect of Gap B to improve the thermal performance is better than that of Gap A. Copyright © 2014 John Wiley & Sons, Ltd.
Are monoterpenoids and phenylpropanoids efficient inhibitors of acetylcholinesterase from stored product insect strains?
Authors: López María Dolores , Pascual‐Villalobos María Jesús 
Published: October 2014

ABSTRACTIn previous papers the toxicity of the monoterpenoids linalool and carvone and the phenylpropanoids trans‐anethole and estragole, as well as the capacity to induce resistance to Sitophilus oryzae and Cryptolestes pusillus trough acetylcholinesterase (AChE) inhibition from either susceptible or tolerant (up to the tenth generation) insect populations, was tested at different concentrations of substrate. In this study, the activity of AChE inhibited by monoterpenoids and phenylpropanoids at lower concentrations (from 0.02 to 10 mM) was measured by Ellman's method at the same concentration of substrate (1 mM). Mainly, all of the monoterpenoids and phenylpropanoids applied turned out to be weak inhibitors at low concentrations, except for linalool and estragole, which were relatively the most powerful inhibitors for S. oryzae susceptible and tolerant strains, and for carvone, but just for the tolerant strain. However, in all these cases, high concentrations of inhibitors were necessary. The compounds studied on C. pusillus turned out to be extremely weak inhibitors, with inhibition not exceeding 40%. Higher values at half‐maximal inhibitory concentration (IC50) were found for tolerant than susceptible strains in S. oryzae and C. pusillus by using linalool, indicating that esterases, or specifically AChE, could be involved in the mode of action. In addition, in relation to the types of inhibition, linalool and estragole were competitive inhibitors, whereas carvone presented a non‐competitive inhibition. This combined information should be taken into account when essential oils, monoterpenoids or phenylpropanoids are used in organic farming, because these compounds can be used as effective insecticides, although they were deficient AChE inhibitors, should this situation be acceptable for ecological agriculture. Copyright © 2014 John Wiley & Sons, Ltd.
Solute diffusion through fibrotic tissue formed around protective cage system for implantable devices
Authors: Prihandana Gunawan Setia , Ito Hikaru , Tanimura Kohei , Yagi Hiroshi , Hori Yuki , Soykan Orhan , Sudo Ryo , Miki Norihisa 
Published: October 2014

AbstractThis article presents the concept of an implantable cage system that can house and protect implanted biomedical sensing and therapeutic devices in the body. Cylinder‐shaped cages made of porous polyvinyl alcohol (PVA) sheets with an 80‐µm pore size and/or stainless steel meshes with 0.54‐mm openings were implanted subcutaneously in the dorsal region of rats for 5 weeks. Analysis of the explanted cages showed the formation of fibrosis tissue around the cages. PVA cages had fibrotic tissue growing mostly along the outer surface of cages, while stainless steel cages had fibrotic tissue growing into the inside surface of the cage structure, due to the larger porosity of the stainless steel meshes. As the detection of target molecules with short time lags for biosensors and mass transport with low diffusion resistance into and out of certain therapeutic devices are critical for the success of such devices, we examined whether the fibrous tissue formed around the cages were permeable to molecules of our interest. For that purpose, bath diffusion and microfluidic chamber diffusion experiments using solutions containing the target molecules were performed. Diffusion of sodium, potassium and urea through the fibrosis tissue was confirmed, thus suggesting the potential of these cylindrical cages surrounded by fibrosis tissue to successfully encase implantable sensors and therapeutic apparatus. © 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 103B: 1180–1187, 2015.
Production of aromatic compounds in the heavy naphtha and light cycle oil ranges: catalytic cracking of aromatics and C10 naphthenic‐aromatics
Authors: Pujro Richard , Falco Marisa , Sedran Ulises 
Published: October 2014

AbstractBACKGROUNDThe conversions of bicyclic compounds, both a naphthenic‐aromatic compound (tetralin) and an aromatic compound (naphthalene), as model reactants representative of the heavy gasoline and light cycle oil (LCO) cuts in fluid catalytic cracking (FCC), were studied to understand the formation of C10–C20 aromatic compounds in gasoline and middle distillates cuts, in view of their impact on the properties of the cuts. A commercial FCC catalyst was used in its fresh, hydrothermally de‐aluminated and equilibrium forms, at 450 °C in a fluidized bed CREC Riser Simulator reactor in the 2–8 s reaction time range.RESULTSProducts were C1–C14 hydrocarbons and coke. Based on the product distributions, reaction networks were proposed for both reactants. The reactions considered in the networks were hydrogen transfer, cracking, ring opening and contraction, alkylation and disproportionation.CONCLUSIONThe load of zeolite in the catalysts and their acidities have the strongest influences on reaction selectivities. In the case of tetralin, the prevalent reaction is hydrogen transfer, which becomes more important as the catalysts are less active, the hydrocarbons with highest yields being C10 aromatics. Cracking reactions predominate in naphthalene conversion over all the catalysts, a fact which favors mono‐aromatic C9− hydrocarbons. These results can help in the design of new FCC catalysts with better selectivity control. © 2014 Society of Chemical Industry