bluuebunny/crossref_metadata_2025 huggingface dataset:
Cyclodextrin grafted calcium carbonate vaterite particles: efficient system for tailored release of hydrophobic anticancer or hormone drugs
Authors: Lakkakula Jaya R. , Kurapati Rajendra , Tynga Ivan , Abrahamse Heidi , Raichur Ashok M. , Maçedo Krause Rui Werner
Published: October 2016

The porous cyclodextrin-CaCO3 microparticles are acting as the intelligent hydrophobic drug carriers, where the loaded drug is stable at blood pH but released at acidic pH (cancer cells) due to recrystallization of CaCO3 particles.
Interaction-induced energy-level crossing and transport phenomena in topological insulators
Authors: Arulsamy Andrew Das
Published: October 2016

Doping-dependent resistivity and carrier-type transition in (Bi1−xSbx)2Te3topological insulators are evaluated using the ionization energy theory supported by experimental data.
Reinforcement of a new calcium phosphate cement with dopamine-mediated strontium-doped calcium polyphosphate-modified polycaprolactone fibers
Authors: Liu Jingwang , Li Li , Yang Xu , Huang ChengCheng , Guo Chengrui , Gu Zhipeng , Yu Xixun
Published: October 2016

To improve the performance of calcium phosphate cement, dopamine/PCL fibers and strontium-doped calcium polyphosphate/D/PCL fibers were respectively incorporated into Sr-containing calcium phosphate cement to develop a novel bone cement.
Fabrication of cotton fabrics using family III cellulose-binding domain for enhanced surface properties
Authors: Zhang Liting , Sun Yaofei , Yao Wenji , Dai Guoying , Wang Ping
Published: October 2016

Cotton fabric surface functionalization by physical adsorption of CBDIII through a sample soaking process.
Mussel-inspired silver-nanoparticle coating on porous titanium surfaces to promote mineralization
Authors: Chen Jialong , Mei May Lei , Li Quan-Li , Chu Chun-Hung
Published: October 2016

Porous titanium surfaces modified with mussel-inspired silver-nanoparticles for inhibiting bacterial adhesion and promoting mineralization and then improving osteoblast-biocompatibility.
White light-emitting diodes of high color rendering index with polymer dot phosphors
Authors: Ruan Cheng , Bai Xue , Sun Chun , Chen Haobin , Wu Changfeng , Chen Xiongbin , Chen Hongda , Colvin Vicki L. , Yu William W.
Published: October 2016

WLEDs were fabricated with commendable color rendering index, widely variable color temperatures and high luminous efficacy by combining green and red emitting polymer dots on YAG:Ce-based WLEDs.
Synthesis of pyrazole derivatives in the presence of a dioxomolybdenum complex supported on silica-coated magnetite nanoparticles as an efficient and easily recyclable catalyst
Authors: Rakhtshah Jamshid , Salehzadeh Sadegh , Gowdini Ehsan , Maleki Farahnaz , Baghery Saeed , Zolfigol Mohammad Ali
Published: October 2016

A dioxomolybdenum complex supported on functionalized Fe3O4 magnetite nanoparticles as a heterogeneous catalyst was synthesized, characterized and used in the synthesis pyrazole derivatives.
Effect of the chemical composition of filter media on the microbial community in wastewater biofilms at different temperatures
Authors: Naz Iffat , Hodgson Douglas , Smith Ann , Marchesi Julian , Ahmed Safia , Avignone-Rossa Claudio , Saroj Devendra P.
Published: October 2016

This study investigates the microbial community composition, in the biofilms grown on two different support media in fixed biofilm reactors for aerobic wastewater treatment, using next generation sequencing (NGS) technology.
Removal of toluene in adsorption–discharge plasma systems over a nickel modified SBA-15 catalyst
Authors: Xu Weicheng , Xu Xiaoxin , Wu Junliang , Fu Mingli , Chen Limin , Wang Ni , Xiao Hailin , Chen Xiaofang , Ye Daiqi
Published: October 2016

In situ FT-IR spectra show the toluene adsorption process of SBA and Ni–SBA catalysts.
Biaxial strain effect on electronic structure tuning in antimonene-based van der Waals heterostructures
Authors: Lu Hao , Gao Junfeng , Hu Ziyu , Shao Xiaohong
Published: October 2016

By combining antimonene (Sb) with semimetal grapheme (G), semiconductor arsenene (As) and insulator hexagonal boron nitride (h-BN), three new 2D van der Waals (vdW) heterostructures, namely, G/Sb, As/Sb and h-BN/Sb, are designed and discussed.
Nitrogen- and sulfur-doped carbon nanoplatelets via thermal annealing of alkaline lignin with urea as efficient electrocatalysts for oxygen reduction reaction
Authors: Zhang Xianlei , Yu Dingling , Zhang Yaqing , Guo Wenhui , Ma Xiuxiu , He Xingquan
Published: October 2016

Novel N–S–C hybrids were synthesized by a facile one-step pyrolysis method, in which the obtained N–S–C 900 was a robust catalyst with enhanced ORR activity and excellent operational stability in alkaline media, superior to the Pt/C catalyst.
Wax patterned microwells for stem cell fate study
Authors: Qamar Ahmad Z. , Amar Kshitij , Kohli Punit , Chowdhury Farhan , Shamsi Mohtashim H.
Published: October 2016

Desktop wax printer was employed to build high throughput platforms for studying stem cells fate.
Characterization and biodegradation behavior of micro-arc oxidation coatings formed on Mg–Zn–Ca alloys in two different electrolytes
Authors: Dou Jinhe , Gu Guochao , Chen Chuanzhong , Pan Yaokun
Published: October 2016

Schematic illustrations of degradation mechanism of the porous MAO coating on Mg alloys in SBF.
Intriguingly tuning the fluorescence of AIEgen using responsive polyelectrolyte microspheres
Authors: Guan Xiaolin , Zhang Donghai , Jia Tianming , Zhang Yang , Meng Li , Jin Qijun , Ma Hengchang , Lu Dedai , Lai Shoujun , Lei Ziqiang
Published: October 2016

We successfully synthesized counterion-sensitive TPE–METAC polyelectrolyte microspheres and tuned its fluorescence and size by ClO4−, PF6− and TFSI−.
High power lithium-ion battery based on a LiMn2O4 nanorod cathode and a carbon-coated Li4Ti5O12 nanowire anode
Authors: Su Xiuli , Liu Jingyuan , Zhang Congcong , Huang Tao , Wang Yonggang , Yu Aishui
Published: October 2016

LiMn2O4 nanorods and carbon-coated Li4Ti5O12 nanowires were used to build a full cell that exhibits supercapacitor-like power performance, long life and high energy density.
Two new silver triazole frameworks with polyoxometalate templates
Authors: Sha Jingquan , Yang Xiya , Zhu Peipei , Lan Yaqian , Sheng Ning
Published: October 2016

Using the same ingredients, two new silver–triazole frameworks with Keggin POMs templates have been synthesized, in which Keggin POMs templates represent the highest coordination number in1and terminal oxygen coordination number in2up to date.
Facet engineering of monodisperse PbS nanocrystals with shape- and facet-dependent photoresponse activity
Authors: Zha Chenyang , Ji Cheng , Zhang Junjie , Shen Liming , Zhang Xiaoyan , Dong Shuai , Bao Ningzhong
Published: October 2016

Monodisperse PbS nanocrystals with three different shapes for designing optoelectronic devices.
Structure engineering of a core/shell Si@Ta3N5 heterojunction nanowires array for photoelectrochemical water oxidation
Authors: Wang Ping , Lee Jae Sung
Published: October 2016

Structure-tuned core/shell n-Si@n-Ta3N5 nanowires array heterojunction photoanodes were prepared on a wafer scale by electroless metal-assisted etching of an Si wafer, spin coating of a Ta(OC2H5)5 sol precursor solution, and ammonia treatment to convert it to Ta3N5.
Top-seeded solution growth and characterization of Raman crystal LiVMoO6
Authors: Wang Zheng , Wu Qian , Zhu Min , Gao Zeliang , Tian Xiangxin , Xia Shengqing , Sun Youxuan , Tao Xutang
Published: October 2016

Single crystal LiVMoO6, with dimensions up to 20 mm × 15 mm × 12 mm, has been grown successfully for the first time from a high-temperature solution with MoO3 as a flux.
A new type of triphenylamine based coumarin–rhodamine hybrid compound: synthesis, photophysical properties, viscosity sensitivity and energy transfer
Authors: Kothavale Shantaram , Sekar Nagaiyan
Published: October 2016

A series of novel core modified triphenylamine coumarin–rhodamine systems (compounds MCMR, MCDR and DCMR) was designed and synthesized by incorporating a coumarin moiety on one and a rhodamine moiety on the other phenyl ring of the triphenylamine molecular skeleton.
Giant low-field reversible magnetocaloric effect in HoCoGe compound
Authors: Zhang Y. , Dong Q. Y. , Wang L. C. , Zhang M. , Yan H. T. , Sun J. R. , Hu F. X. , Shen B. G.
Published: October 2016

HoCoGe compound shows large magnetic entropy change and adiabatic temperature change, which makes it an attractive candidate for magnetic refrigeration in the low temperature range.
Selective removal of IgG from the urine of patients with proteinuria using a polymer coated core–shell magnetic nanoparticle
Authors: Deng Zhifen , Hu Kai , Bi Liangliang , Yuan Hang , Chen Yanlong , Zhao Shengnan , Du Huifang , Yuan Xuesheng , Huang Yanjie , Zhang Shusheng
Published: October 2016

A synthetic monomer ofN-methacryloyl-l-aspartic acid plays a specific recognition role in magnetic separation of IgG from urinary protein sample using Fe3O4@SiO2@MAsp-HEMA nanoparticles.
A novel rosamine-based fluorescent probe for bisulfite in aqueous solution
Authors: Zhang Di , Wenya Liu , Chen Keke , Cheng Junye , Zhao Yufen , Ye Yong
Published: October 2016

A new rosamine-based fluorescent chemodosimeter has been developed for highly sensitive and selective detection of bisulfite in aqueous solution.
Cs+ incorporation into CH3NH3PbI3 perovskite: substitution limit and stability enhancement
Authors: Niemann Ralf G. , Gouda Laxman , Hu Jiangang , Tirosh Shay , Gottesman Ronen , Cameron Petra J. , Zaban Arie
Published: October 2016

In this study we systematically explored the mixed cation perovskite Csx(CH3NH3)1−xPbI3.
Single-step synthesis of hierarchical BxCN: a metal-free catalyst for low-temperature oxidative dehydrogenation of propane
Authors: Goyal Reena , Sarkar Bipul , Bag Arijit , Lefebvre Frederic , Sameer Siddharth , Pendem Chandrashekar , Bordoloi Ankur
Published: October 2016

A boron- and nitrogen-co-doped mesoporous carbon (BxCN) material with a hierarchical pore structure has been synthesized from a new boron precursor via a nanocasting approach.
Retracted Article: Preparation of face-centered-cubic indium nanocubes and their superior dehydrogenation activity towards aqueous hydrazine with the assistance of light
Authors: Luo Fang , Miao Xue , Chu Wei , Wu Ping , Tong Dong Ge
Published: October 2016

Face-centered-cubic indium nanocubes exhibited excellent activity toward the dehydrogenation of aqueous hydrazine in the presence of light.
NIR photoresponsive drug delivery and synergistic chemo-photothermal therapy by monodispersed-MoS2-nanosheets wrapped periodic mesoporous organosilicas
Authors: Shao Tianpeng , Wen Jun , Zhang Qi , Zhou Yingwen , Liu Li , Yuwen Lihui , Tian Ying , Zhang Yunlei , Tian Wei , Su Yunyan , Teng Zhaogang , Lu Guangming , Xu Jian
Published: October 2016

NIR photoresponsive PMO–Dox@MoS2–PEG nanoplatforms were constructed for synergistic chemo-photothermal therapy.
Diphenylpyrimidinone–salicylideneamine – new ESIPT based AIEgens with applications in latent fingerprinting
Authors: Singh Prabhpreet , Singh Harminder , Sharma Rashmi , Bhargava Gaurav , Kumar Subodh
Published: October 2016

Green fluorescent aggregates of diphenylpyrimidinone–salicylideneamine show AIE + ESIPT in 99% H2O:CH3CN for the visualization of fingerprints on aluminium, steel, glass, ceramic tile and metal coin surfaces.
Artificial synapses based on biopolymer electrolyte-coupled SnO2nanowire transistors
Authors: Gou Guangyang , Sun Jia , Qian Chuan , He Yinke , Kong Ling-an , Fu Yan , Dai Guozhang , Yang Junliang , Gao Yongli
Published: October 2016

Synaptic transistors coupled by proton neurotransmitters with a multiple in-plane gate structure were fabricated for the first time using silicon oxide nanowires.
Robust fuzzy SRAM for accurate and ultra‐low‐power MVL and fuzzy logic applications
Authors: Moonesan M. , Faghih Mirzaee R. , Sam Daliri M. , Navi K.
Published: October 2016

A fuzzy static RAM (SRAM) is proposed, which is applicable in fuzzy logic and many multiple‐valued logic (MVL) applications. The new structure is basically an extension to the binary SRAM cell. Two cross‐coupled voltage mirror circuits are used to be able to hold an arbitrary voltage value. The proposed design forms a robust and reliable structure, which is capable of operating with more than 95% accuracy in spite of imperfect fabrication of carbon nanotube FETs. Another exceptional advantage is its ultra‐low‐power consumption in MVL environments. It consumes 38.7 and 99% less static power compared with the SRAMs with regular ternary and quaternary components, respectively.
Time allocation optimisation for multi‐antenna wireless information and power transfer with training and feedback
Authors: Wu Yating , Wang Tao , Sun Yanzan , Xu Chongbin
Published: October 2016

Time allocation optimisation for a multi‐antenna wireless energy and information transfer system is studied in this study. The terminal first harvests the wireless energy from the base station (BS) during phase I, and then uses the harvested energy to power its information transmission during phase II. Realistic channel state information (CSI) assumptions are made where the CSI at the BS is obtained via training and feedback and is subject to channel estimation error and quantisation error. Therefore, in addition to the tradeoff between information and power transfer, there is also a tradeoff in determining the overheads of training and feedback. To gain insight into this problem, the authors characterise the asymptotic behaviour of the parameters in the large system limit where the number of transmit antennas Nt and transmission block length Ltot tend to infinity with fixed ratio Ltot/Nt. The optimal overheads of training and feedback within each phase are first derived to maximise the harvested power and the information transmission rate, respectively. The optimised time allocation between phase I and phase II is then obtained by maximising the bounds of the effective average information transmission rate. Finally, numerical results are presented to verify the proposed theorems.
Optimised index modulation for filter bank multicarrier system
Authors: Zhang Jian , Zhao Minjian , Zhong Jie , Xiao Pei , Yu Tianhang
Published: October 2016

Orthogonal frequency division multiplexing with index modulation (OFDM‐IM) has attracted considerable interest recently. The technique uses the subcarrier indices as a source of information. In filter bank multicarrier (FBMC) system, double‐dispersive channels lead to inter‐carrier interference and/or inter‐symbol interference, which are caused by the neighbouring symbols in the frequency and/or time domain. When the authors introduce index modulation to the FBMC system, the interference power will be smaller comparing with that of the conventional FBMC system as some subcarriers carry nothing but zeros. In this study, the advantages of FBMC with index modulation (FBMC‐IM) are investigated by comparing the signal to interference ratio with that of the conventional FBMC system. However, the bit error rate (BER) performance is affected since there exists interference in the FBMC‐IM system. To improve the BER performance, the authors propose an optimal combination‐selection algorithm and an optimal combination‐mapping rule. By abandoning some combinations whose error probability are larger and by mapping the remaining combinations into specified bits, a better BER performance can be achieved compared with that without optimisation. The theoretical analysis and simulation results clearly show the FBMC‐IM system has a good BER performance under double‐dispersive channels.
Cooperative transmission over Rician fading channels for geostationary orbiting satellite collocation system
Authors: Bai Lin , Zhu Lina , Choi Jinho , Liu Feng , Yu Quan
Published: October 2016

To enhance the spectral efficiency of geostationary Earth orbit (GEO) satellite communication systems with scarce GEO resources, cooperative transmission is widely used in GEO satellite collocation (GEOSC) systems. Current analysis on GEOSC channels is usually based on the hypothesis that channels are line‐of‐sight (LOS) ones, while multipath components are ignored. In this study, a more realistic cooperative transmission method is studied for GEOSC systems over Rician fading channels, where multipath components are taken into consideration in conjunction with LOS components. On the basis of this model, a practical user selection strategy with opportunistic beamforming is studied to optimise the capacity of GEOSC systems. Simulation results show that the GEOSC system using the techniques developed in this study has better performance comparing with the ones using existing approaches.
Comparison results of stochastic resonance effects realised by coherent and non‐coherent receivers under Gaussian noise
Authors: Liang Linlin , Li Zan , Liu Jin , Zhang Nina , Qi Peihan
Published: October 2016

To boost the performance of binary pulse amplitude modulation at low signal‐to‐noise ratio, the parameter‐tuned stochastic resonance (SR) is introduced into digital communications system. In this study, an analytical framework is developed for evaluating the system performance by approximating the probability density function of the Ornstein–Uhlebeck noise based on the central limit theorem. Expression for the bit error rate of the bistable SR system with coherent receiver is derived. Theoretical and numerical results are presented to verify the analysis that the noise can improve the performance of the SR system with non‐coherent receiver. Also, it is shown that the performance of the bistable SR system with coherent receiver is superior to that with non‐coherent receiver, and the background noise is not favourable to signal processing in the coherent receiver.
Constraining the geometry of PSR J0855−4644: A nearby pulsar wind nebula with double torus/jet morphology
Authors: Maitra C. , Acero F. , Venter C.
Published: October 2016

Aims. PSR J0855−4644 is a fast-spinning, energetic pulsar discovered at radio wavelengths near the south-eastern rim of the supernova remnant RX J0852.0−4622. A follow-up XMM-Newton observation revealed the X-ray counterpart of the pulsar and a slightly asymmetric pulsar wind nebula, which suggests possible jet structures. Lying at a distance d ≤ 900 pc, PSR J0855−4644 is a pulsar with one of the highest Ė/d2 from which no GeV γ-ray pulsations have been detected. With a dedicated Chandra observation we aim to further resolve the possible jet structures of the nebula and study the pulsar geometry to understand the lack of γ-ray pulsations.

Methods. We performed detailed spatial modelling to constrain the geometry of the pulsar wind nebula and in particular the pulsar line of sight (observer angle) ζPSR, which is defined as the angle between the direction of the observer and the pulsar spin axis. We also performed geometric radio and γ-ray light-curve modelling using a hollow-cone radio beam model together with two-pole caustic and outer gap models to further constrain ζPSR and the magnetic obliquity α defined as the angle between the magnetic and spin axes of the pulsar.

Results. The Chandra observation reveals that the compact XMM source, thought to be the X-ray pulsar, can be further resolved into a point source surrounded by an elongated axisymmetric nebula with a longitudinal extent of 10′′. The pulsar flux represents only ~1% of the XMM compact source, and its spectrum is well described by a blackbody of temperature kT = 0.2 keV, while the surrounding nebula has a much harder spectrum (Γ = 1.1 for a power-law model). Assuming the origin of the extended emission is a double torus yields ζPSR = 32.5° ± 4.3°. The detection of thermal X-rays from the pulsar may point to a low value of | ζ−α | if this emission originates from a heated polar cap. Independent constraints from geometric light-curve modelling yield α ≲ 55° and ζ ≲ 55°, and 10° ≲ | ζ−α | ≲ 30°. A χ2 fit to the radio light curve yields a best fit at (α,ζPSR) = (22°,8°), with an alternative fit at (α,ζPSR) = (9°,25°) within 3σ. The lack of non-thermal X-ray emission from the pulsar further supports low values for α and ζ under the assumption that X-rays and γ-rays are generated in the same region of the pulsar magnetosphere. Such a geometry would explain, in the standard caustic pulsar model picture, the radio-loud and γ-ray-quiet behaviour of this high Ė/d2 pulsar.
Trinkverhalten von Personen verschiedener Herkunftsregionen in Deutschland: Ein Vergleich mit Personen ohne Migrationshintergrund
Authors: Strupf Michael , Gomes de Matos Elena , Soellner Renate , Kraus Ludwig , Piontek Daniela
Published: October 2016

Ziel: Es wurden Personen mit Migrationshintergrund aus verschiedenen Herkunftsregionen hinsichtlich ihres Alkoholkonsums mit Personen ohne Migrationshintergrund verglichen.

Methodik: Daten des Epidemiologischen Suchtsurveys (ESA) 2012 wurden ausgewertet (n=9 084). Personen mit Migrationshintergrund wurden ihrer Herkunft entsprechend in 10 Gruppen aufgeteilt. Als Indikatoren zur Erfassung des Alkoholkonsums dienten Abstinenz, Durchschnittskonsum und episodisches Rauschtrinken. Inferenzstatistische Vergleiche erfolgten regressionsanalytisch.

Ergebnisse: Alle Herkunftsgruppen außerhalb Europas und wenige innerhalb Europas wiesensignifikant höhere Abstinenzraten auf als Personen ohne Migrationshintergrund. Die höchsten Werte zeigten Personen mit einem Hintergrund aus arabisch-islamisch geprägten Ländern und der Türkei. Hinsichtlich des Durchschnittskonsums und episodischen Rauschtrinkens wurden kaum Gruppenunterschiede gefunden.

Schlussfolgerungen: Die Bereitschaft unter Personen mit Migrationshintergrund zur Abstinenz sollte unterstützt werden. Ein Bedarf migrationsspezifischer Präventionsmaßnahmen auf Populationsebene ist für die Gruppe der in den zurückliegenden Jahrzehnten nach Deutschland migrierten Personen und ihre Nachkommen nicht erkennbar; die Erreichung der Personen mit Migrationshintergrund durch bestehende Maßnahmen sollte gewährleistet werden.
Investigation of the ionization balance of bismuth-to-tin plasmas for the extreme ultraviolet light source based on a computer-generated collisional radiative model
Authors: Sasaki Akira , Sunahara Atsushi , Nishihara Katsunobu , Nishikawa Takeshi
Published: October 2016

The ionization balance of the bismuth-to-tin plasmas is systematically investigated on the basis of a collisional radiative model, which has been generated using a computer algorithm to analyze the level structure of multiple charged ions to construct the model. The atomic energy levels and rate coefficients corresponding to the model are calculated using the HULLAC code. With this method, we investigate the plasma temperature, which is required to obtain emission in the extreme ultraviolet wavelength range from 13.5 nm to the water window.
How do liquid fuel physical properties affect liquid jet development in atomisers?
Authors: Charalampous Georgios , Hardalupas Yannis
Published: October 2016

The influence of liquid fuel properties on atomisation remains an open question. The droplet sizes in sprays from atomisers operated with different fuels may be modified despite the small changes of the liquid properties. This paper examines experimentally the development of a liquid jet injected from a plain orifice in order to evaluate changes in its behaviour due to modifications of the liquid properties, which may influence the final atomisation characteristics. Two aviation kerosenes with similar, but not identical physical properties are considered, namely, standard JP8 kerosene as the reference fuel and bio-derived hydro-processed renewable jet fuel as an alternative biofuel. The corresponding density, dynamic viscosity, kinematic viscosity, and surface tension change by about +5%, −5%, −10%, and +5%, respectively, which are typical for “drop-in” fuel substitution. Three aspects of the liquid jet behaviour are experimentally considered. The pressure losses of the liquid jet through the nozzle are examined in terms of the discharge coefficient for different flowrates. The morphology of the liquid jet is visualised using high magnification Laser Induced Fluorescence (LIF) imaging. Finally, the temporal development of the liquid jet interfacial velocity as a function of distance from the nozzle exit is measured from time-dependent motion analysis of dual-frame LIF imaging measurements of the jet. The results show that for the small changes in the physical properties between the considered liquid fuels, the direct substitution of fuel did not result in a drastic change of the external morphology of the fuel jets. However, the small changes in the physical properties modify the interfacial velocities of the liquid and consequently the internal jet velocity profile. These changes can modify the interaction of the liquid jet with the surroundings, including air flows in coaxial or cross flow atomisation, and influence the atomisation characteristics during the changes of liquid fuels.
Reducing the number of questions in nonlocal games
Authors: Junge M. , Oikhberg T. , Palazuelos C.
Published: October 2016

We show how a vector-valued version of Schechtman’s empirical method can be used to reduce the number of questions in a nonlocal game G while preserving the quotient β∗(G)/β(G) of the quantum over the classical bias. We apply our method to the Khot-Vishnoi game, with exponentially many questions per player, to produce a family of games indexed in n with polynomially many (N ≈ n8) questions and n answers per player so that the ratio of the quantum over the classical bias is Ω(n/log2 n).
Molecular resonances by removing complex absorbing potentials via Padé; Application to CO− and N2−
Authors: Landau Arie , Moiseyev Nimrod
Published: October 2016

Atomic and molecular resonances play a role in many physical processes. Resonances are metastable states that have a finite lifetime. Nowadays, resonance complex eigenvalues can be calculated by quantum chemistry packages modified to include complex absorbing potentials (CAPs), where the imaginary energy part corresponds to the resonance lifetime. CAPs provide similar conditions to the ones obtained by imposing outgoing boundary conditions (OBCs), however, they also introduce artificial reflections. In this study, we present a scheme that eliminates the artificial effect of CAPs from bona fide electronic-structure calculations using the Padé approximant. This allows us to reach the physical limit and obtain the same eigenvalues as if we were able to solve the time-independent Schrödinger equation with OBCs (and without adding an unphysical CAP). We apply this scheme to the CO− and N2− shape-type 2Π resonances with excellent agreement with experimental and other theoretical studies. The strength of the presented approach is demonstrated by providing accurate resonance complex energies independent of the CAP location, even when placed on the nuclei, which makes the optimization of the CAP-onset parameters redundant.
Breakdown of linear response theory under low-power excitation in NMR. I. The case of long-lived signals in inhomogeneously broadened spin systems
Authors: Gong Zhaoyuan , Walls Jamie D.
Published: October 2016

In this work, we examine the application of linear response theory to the problem of low-power excitation in inhomogeneously broadened spin systems when the strength of the radiofrequency (RF) pulse, νRF, is smaller than the inhomogeneous linewidth. Even for small overall excitations [Θ = 2πνRFTp ≪ 1 where Tp is the RF pulse length], linear response theory is shown to break down for spins with resonance frequencies that are on the order of νRF, which is due to the fact that the RF interaction cannot be treated as a small perturbation in this case. This breakdown in linear response theory can be partially corrected for by enforcing unitarity in the linear response. Furthermore, the nature of the spin echo generated by a πX-pulse applied immediately after a low-power pulse is investigated. Numerical calculations and experiments performed in an inhomogeneously broadened H2O/D2O solution confirm the theoretical predictions presented in this work.
Spintronics via non-axisymmetric chiral skyrmions
Authors: Leonov A. O. , Loudon J. C. , Bogdanov A. N.
Published: October 2016

Micromagnetic calculations demonstrate a peculiar evolution of non-axisymmetric skyrmions driven by an applied magnetic field in confined helimagnets with longitudinal modulations. We argue that these specific solitonic states can be employed in nanoelectronic devices as an effective alternative to the common axisymmetric skyrmions that occur in magnetically saturated states.
The surface charge distribution affects the ice nucleating efficiency of silver iodide
Authors: Glatz Brittany , Sarupria Sapna
Published: October 2016

Heterogeneous ice nucleation is the primary pathway for ice formation. However, the detailed molecular mechanisms by which surfaces promote or hinder ice nucleation are not well understood. We present results from extensive molecular dynamics simulations of ice nucleation near modified silver iodide (AgI) surfaces. The AgI surfaces are modified to investigate the effects of the surface charge distribution on the rate of ice nucleation. We find that the surface charge distribution has significant effects on ice nucleation. Specifically, AgI surfaces with the positive charges above the negative charges in the surface promote ice nucleation, while ice nucleation is hindered for surfaces in which the negative charges are above or in-plane with the positive charges. The structure of water molecules in the interfacial region as measured by the orientations of the water molecules relative to the surface can explain the differences in the ice nucleation at the different surfaces. We suggest that the distributions of the orientations of the interfacial water molecules could be used more broadly as a measure of ice nucleating propensity.
Exact periodic cross-kink wave solutions for the new (2+1)-dimensional KdV equation in fluid flows and plasma physics
Authors: Liu Jian-Guo , Du Jian-Qiang , Zeng Zhi-Fang , Ai Guo-Ping
Published: October 2016

The Korteweg-de Vries (KdV)-type models have been shown to describe many important physical situations such as fluid flows, plasma physics, and solid state physics. In this paper, a new (2 + 1)-dimensional KdV equation is discussed. Based on the Hirota's bilinear form and a generalized three-wave approach, we obtain new exact solutions for the new (2 + 1)-dimensional KdV equation. With the help of symbolic computation, the properties for some new solutions are presented with some figures.
Pressure induced polymerization of fluid ethylene
Authors: Scelta Demetrio , Ceppatelli Matteo , Bini Roberto
Published: October 2016

The spontaneous polymerization of fluid ethylene under high temperature and pressure conditions has been characterized by using FTIR absorption spectroscopy. The fluid has been isobarically heated at pressures ranging between 0.4 and 1.5 GPa by means of a resistively heated membrane diamond anvil cell. Besides tracing the instability boundary for spontaneous polymerization in the fluid, we have also measured the reaction kinetics at 1.5 GPa and temperatures ranging between 340 and 423 K. From the rate constants the activation energy of the overall reaction could be computed, information that joined to the molecularity of the initiation step provides some insight about the reaction mechanism. The polymers recovered from the different reactions have been characterized by FTIR, Raman, and X-ray diffraction revealing in all the cases a crystalline material of astonishing quality, likely related to the growth of the polymer in the hot fluid monomer.
Characterizing full matrix constants of piezoelectric single crystals with strong anisotropy using two samples
Authors: Tang Liguo , Zhang Yang , Cao Wenwu
Published: October 2016

Although the self-consistency of the full matrix material constants of a piezoelectric sample obtained by the resonant ultrasonic spectroscopy technique can be guaranteed because all constants come from the same sample, it is a great challenge to determine the constants of a piezoelectric sample with strong anisotropy because it might not be possible to identify enough resonance modes from the resonance spectrum. To overcome this difficulty, we developed a strategy to use two samples of similar geometries to increase the number of easy identifiable modes. Unlike the IEEE resonance methods, sample-to-sample variation here is negligible because the two samples have almost the same dimensions, cut from the same specimen and poled under the same conditions. Using this method, we have measured the full matrix constants of a [011]c poled 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 single crystal, which has 17 independent constants. The self-consistency of the obtained results is checked by comparing the calculated elastic stiffness constants c33D, c44D, and c55D with those directly measured ones using the ultrasonic pulse-echo method.
Discrete lattice modes in a complex plasma chain with foreign particles
Authors: Li Bo-Wen , Wang Zhi-Bin , Wang Xiao-Gang
Published: October 2016

Discrete normal modes excited in a complex plasma chain with foreign particles are studied numerically in this work. The discrete spectrum, higher than the continuum spectrum of conventional lattice modes, for the dust chain with various foreign particles is obtained by a frequency resonance with the mode eigenfrequency excited by an external perturbation. The relation of the foreign particles and normal mode numbers and other features of the modes are also discussed.
Enhanced efficiency and stability in organic light-emitting diodes by employing a p-i-n-p structure
Authors: Zhang Lei , Zhou Dong-Ying , Wang Bo , Shi Xiao-Bo , Hu Yun , Wang Zhao-Kui , Liao Liang-Sheng
Published: October 2016

Organic light-emitting diodes (OLEDs) with a p-i-n-p structure were developed by inserting a p-doped layer, MoO3 doped N,N′-bis(naphthalen-1-yl)-N,N′-bis(phenyl)-benzidine (NPB), between an n-doped electron injection layer and the cathode. The device showed a 33.5% improvement in the power efficiency and 70.7% improvement in the half operational lifetime compared with the conventional p-i-n structure based device. The improved device performance is mainly ascribed to an improved conductivity, an enhanced thermal stability, and the protection of the electron injection layer by the NPB:MoO3 p-doped layer. The finding indicates that the p-i-n-p structure is beneficial for improving the efficiency and the stability of OLEDs.
Communication: Structural locking mediated by a water wire: A high-resolution rotational spectroscopy study on hydrated forms of a chiral biphenyl derivative
Authors: Domingos Sérgio R. , Pérez Cristóbal , Schnell Melanie
Published: October 2016

We report the observation of structural changes in an axially chiral molecule, biphenyl-2-carboxaldehyde, due to aggregation with water. Using high-resolution broadband rotational spectroscopy we find that two water molecules link opposite sides of the molecule, resembling a water wire. We show that this effect can be explained by a cooperative rearrangement of both molecule and a water dimer. Hydrogen bonding interactions are shown to change the original structure upon aggregation of water. This phenomenon is insightful on the role of microsolvation in assisting structural morphing of stereo-selective chiral molecular systems.
Thermal diode in gas-filled nanogap with heterogeneous surfaces using nonequilibrium molecular dynamics simulation
Authors: Avanessian T. , Hwang G.
Published: October 2016

A thermal diode serves as a basic building block to design advanced thermal management systems in energy-saving applications. However, the main challenges of existing thermal diodes are poor steady-state performance, slow transient response, and/or extremely difficult manufacturing. In this study, the thermal diode is examined by employing an argon gas-filled nanogap with heterogeneous surfaces in the Knudsen regime, using nonequilibrium molecular dynamics simulation. The asymmetric gas pressure and thermal accommodation coefficients changes are found due to asymmetric adsorptions onto the heterogeneous nanogap with respect to the different temperature gradient directions, and these in turn result in the thermal diode. The maximum degree of diode (or rectification) is Rmax ∼ 7, at the effective gas-solid interaction ratio between the two surfaces of ε* = 0.75. This work could pave the way to designing advanced thermal management systems such as thermal switches (transistors).
Corrigendum to: Comparison of B-splines and non-linear functions to describe growth patterns and predict mature weight of female beef cattle
Authors: Cano G. , Blanco M. , Casasús I. , Cortés-Lacruz X. , Villalba D.
Published: October 2016

The objective of this study was to compare the ability of Basis spline (B-spline) models and five non-linear functions (Richards, Brody, Von Bertalanffy, Gompertz and Logistic) to describe the growth of females of a beef cattle breed and predict cow mature weight (A). Random regression models that included animal variation within function parameters were fitted using mixed model procedures. Comparisons were made among these functions for goodness of fit, standardised residuals and biological interpretability of the growth curve parameters. The B-spline function showed the best goodness of fit and within non-linear functions, the Richards and Von Bertalanffy functions estimated bodyweight at different periods accurately. The method of fitting the residual variance that provided the best goodness of fit in the model was the constant plus power variance function. The Richards function was found to be the best non-linear function and was compared with the B-spline function to predict mature weight. When the A parameter was estimated using fixed effects, it had a low correlation with the actual mature weight of the cow and the use of this estimate yielded no more gain in predictive accuracy of mature weight than the use of average breed mature weight. When A was estimated using fixed and random effects, it had a moderate correlation with actual mature weight for the B-spline and Richards functions. The use of both types of effects to estimate the maturity index reduced the error compared with the use of average mature weight, especially for the B-spline function, which is recommended as the best function to describe animal growth and predict mature weight.
Studying in a ‘multilingual university’ at home or abroad
Authors: Cots Josep Maria , Garrett Peter , Lasagabaster David
Published: October 2016

The relatively recent phenomenon of the internationalisation of higher education (HE) in European non-English-speaking universities has resulted in more linguistically diverse student bodies and has forced universities in bilingual territories to reconsider their language policies. In this paper, we adopt a student perspective in order to explore the notion of a multilingual university in the bilingual territories of Catalonia, Wales and the Basque Autonomous Community (BAC). This also includes looking at how the students view the relationship and possible tensions between internationalisation (and its concomitant student mobility) and the language policies. In order to investigate the attitudes and beliefs of the students (both home and international) in connection with the notion of a multilingual university, we asked them to complete an open-ended questionnaire item regarding the advantages and disadvantages they see in such an institution. The results of the analysis point, in the first place, to different perceptions among students of a multilingual university depending on (i) whether English is the main or even sole means of instruction, and (ii) the perceived status of the minority language. Secondly, the analysis suggests the need to approach students’ attitudes towards a multilingual university by considering the ways in which the sociolinguistic context (in official, academic and experiential terms) may have an impact on their perception of the process of multilingualisation in universities.
Acquisition of L2 Spanish requests in short-term study abroad
Authors: Hernandez Todd A.
Published: October 2016

The aim of this investigation was to examine the pragmatic development of 20 students during a short-term study abroad program in Spain. Request strategies were assessed with a written request production questionnaire. A language contact profile (LCP) was used to measure the relationship between pragmatic performance ratings and target language contact. Pretest and posttest mean scores on the request production questionnaire indicated that the students improved their request performance as rated by two native speakers. In looking at the specific request strategies used on the pretest and posttest vignettes, it is clear, however, that the students improved some aspects of their request production while other aspects remained unchanged. Further, LCP scores indicated that the students had little contact with native speakers during their time in Spain. No significant relationships were found between the LCP and request performance ratings. Results suggest that study abroad leadership should support students’ L2 pragmatic development before, during, and after study abroad.
Assessment of Detoxifying Markers for Florfenicol in Rainbow Trout Liver
Authors: Elia Antonia Concetta , Pacini Nicole , Fioravanti Maria Letizia , Dörr Ambrosius Josef Martin , Zaccaroni Annalisa , Parmeggiani Alba Maria , Gustinelli Andrea , Mordenti Oliviero , Abete Maria Cesarina , Prearo Marino
Published: October 2016

Florfenicol (FF) is employed in fish farms to contest or prevent bacterial infections. However, this pharmaceutical may produce reactive oxygen species that may cause biochemical changes in antibiotic-treated fish. The aim of this study was to evaluate the effect of FF on Rainbow Trout Oncorhynchus mykiss treated for 10 d with 7.5 and 15 mg/kg FF followed by a withdrawal period of 5 d. Superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase, glutathione S-transferase, glyoxalase I and glyoxalase II, total glutathione, lactic dehydrogenase, and alkaline phosphatase were investigated in the livers of treated and untreated fish. A general impairment of antioxidant enzymes and metabolic indicators was measured in FF-treated Rainbow Trout. Onset of oxidative damage may have occurred during the antibiotic treatment as a consequence of the effect of FF toxicity at mainly the highest dose. Nevertheless, the rise in levels of total glutathione and glutathione S-transferase even after the withdrawal period may shield the antibiotic-mediated oxidative processes.

Received December 22, 2015; accepted May 26, 2016 Published online October 28, 2016
Induction of the SHARP-2 mRNA level by insulin is mediated by multiple signaling pathways
Authors: Kanai Yukiko , Asano Kosuke , Komatsu Yoshiko , Takagi Katsuhiro , Ono Moe , Tanaka Takashi , Tomita Koji , Haneishi Ayumi , Tsukada Akiko , Yamada Kazuya
Published: October 2016

The rat enhancer of split- and hairy-related protein-2 (SHARP-2) is an insulin-inducible transcription factor which represses transcription of the rat phosphoenolpyruvate carboxykinase gene. In this study, a regulatory mechanism of the SHARP-2 mRNA level by insulin was analyzed. Insulin rapidly induced the level of SHARP-2 mRNA. This induction was blocked by inhibitors for phosphoinositide 3-kinase (PI 3-K), protein kinase C (PKC), and mammalian target of rapamycin (mTOR), actinomycin D, and cycloheximide. Whereas an adenovirus infection expressing a dominant negative form of atypical PKC lambda (aPKCλ) blocked the insulin-induction of the SHARP-2 mRNA level, insulin rapidly activated the mTOR. Insulin did not enhance transcriptional activity from a 3.7 kb upstream region of the rat SHARP-2 gene. Thus, we conclude that insulin induces the expression of the rat SHARP-2 gene at the transcription level via both a PI 3-K/aPKCλ- and a PI 3-K/mTOR- pathways and that protein synthesis is required for this induction.
Religiosity and corporate financial reporting: evidence from a European country
Authors: Montenegro Tânia Menezes
Published: October 2016

Using a sample of Portuguese firms, I examine the association between religiosity and financial reporting quality. The results suggest that firms headquartered in areas with strong religious adherence, higher levels of (aggregate) religiosity, and in the core area of the Portuguese
religious cult (the district where the Fátima Sanctuary is located) generally experience lower incidence of earnings management. The evidence on religious adherence holds separately for Catholic affiliation, and the results are not driven by firms headquartered in rural areas.
I also conclude that religiosity, together with other forms of external monitoring, represents a mechanism for reducing aggressive accounting practices. I confirm that the evidence on the positive association between religiosity and financial reporting quality previously gathered from a primarily
Protestant country (US) and from a Buddhist and Taoist country (China), holds in the Latin Europe, which is dominated by the Catholic denomination and has a lower intensity of religiosity.
Dynamic adjustment of lexical processing in the lexical decision task: Cross-trial sequence effects
Authors: Balota David A , Aschenbrenner Andrew J , Yap Melvin J
Published: October 2016

There has been growing interest in dynamic changes in the lexical processing system across trials, which have typically been assessed via linear mixed effect modelling. In the current study, we explore the influence of previous trial lexicality and previous trial perceptual degradation on the effect of lexicality and degradation on the current trial. The results of analyses of three datasets (two previously published studies and a new study) provide evidence for a robust four-way interaction among previous trial lexicality and degradation and current trial lexicality and degradation effects. Discussion emphasizes how priming of relevant dimensions (clear vs. degraded or word vs. nonword) within the experimental context modulates the influence of degradation on the current trial as a function of lexicality. These results suggest that in lexical decision there are robust lingering effects of the previous stimulus and response that carry over to the current stimulus and response, and participants cannot tune task-related systems to only the present trial. Importantly, although these complex relationships are theoretically important regarding lexical and decision level processes, these complexities also reinforce Keith Rayner’s emphasis on on-line eye-tracking measures during reading as the most straightforward window into word-level processes engaged during reading.
Intentionally fabricated autobiographical memories
Authors: Justice Lucy V. , Morrison Catriona M. , Conway Martin A.
Published: October 2016

Participants generated both autobiographical memories (AMs) that they believed to be true and intentionally fabricated autobiographical memories (IFAMs). Memories were constructed while a concurrent memory load (random 8-digit sequence) was held in mind or while there was no concurrent load. Amount and accuracy of recall of the concurrent memory load was reliably poorer following generation of IFAMs than following generation of AMs. There was no reliable effect of load on memory generation times; however, IFAMs always took longer to construct than AMs. Finally, replicating previous findings, fewer IFAMs had a field perspective than AMs, IFAMs were less vivid than AMs, and IFAMs contained more motion words (indicative of increased cognitive load). Taken together, these findings show a pattern of systematic differences that mark out IFAMs, and they also show that IFAMs can be identified indirectly by lowered performance on concurrent tasks that increase cognitive load.
Magnus embedding and algorithmic properties of groups 𝐹/𝑁^{(𝑑)}
Authors: Gul Funda , Sohrabi Mahmood , Ushakov Alexander
Published: October 2016

In this paper we further study properties of Magnus embedding, give a precise reducibility diagram for Dehn problems in groups of the form

F

/

N

(
d
)

F/N^{(d)}

, and provide a detailed answer to Problem 12.98 in The Kourovka notebook. We also show that most of the reductions are polynomial time reductions and can be used in practical computation.