bluuebunny/crossref_metadata_2025 huggingface dataset:
Epigenetic stimulation of polyketide production in Chaetomium cancroideum by an NAD+-dependent HDAC inhibitor
Authors: Asai Teigo , Morita Shuntaro , Taniguchi Tohru , Monde Kenji , Oshima Yoshiteru
Published: November 2015

Exposure of the fungus Chaetomium cancroideum to an NAD+-dependent HDAC inhibitor, nicotinamide, enhanced the production of aromatic and branched aliphatic polyketides, which allowed us to isolate new secondary metabolites, chaetophenol G and cancrolides A and B.
Highly selective, sensitive and fluorescent sensing of dimeric G-quadruplexes by a dimeric berberine
Authors: Zhou Chun-Qiong , Yang Jian-Wei , Dong Cheng , Wang Yong-Min , Sun Bin , Chen Jin-Xiang , Xu Ya-Shi , Chen Wen-Hua
Published: November 2015

This paper describes the highly selective, sensitive and topology-specific fluorescent sensing of dimeric G-quadruplexes by a polyether-tethered dimeric berberine.
Design and synthesis of simple, yet potent and selective non-ring-A pyripyropene A-based inhibitors of acyl-coenzyme A: cholesterol acyltransferase 2 (ACAT2)
Authors: Zhan Yang , Zhang Xiao-Wei , Xiong Ying , Li Bo-Liang , Nan Fa-Jun
Published: November 2015

A series of pyripyropene A-based compounds were designed and synthesized by opening the upper section of the A-ring, which significantly simplifies the structure and synthesis from commercially available starting materials.
Microwave-assisted synthesis of block copolymer nanoparticles via RAFT with polymerization-induced self-assembly in methanol
Authors: Garrett Elden T. , Pei Yiwen , Lowe Andrew B.
Published: November 2015

A comparative study of microwave-assisted (MA) and conductive heating in RAFT dispersion polymerization formulations in MeOH that result in polymerization-induced self-assembly is detailed.
Hydroisomerization of long chain n-paraffins: the role of the acidity of the zeolite
Authors: Bi Yunfei , Xia Guofu , Huang Weiguo , Nie Hong
Published: November 2015

This work clarifies the role of the acidity of the zeolite during the hydroisomerization of n-paraffins including the acid strength, acid concentration and the zeolite content.
The in situ monitoring of the transformation of moxidectin ethanol solvate to form I in an ethanol–water mixture
Authors: Shi Zhicong , Wang Zhanzhong , Zhang Ting , Dang Leping , Wei Hongyuan
Published: November 2015

Moxidectin is a single-component and semisynthetic macrocyclic lactone antibiotic, which has been widely used in the prevention and treatment of parasites in farm animals.
Trimethyl-phosphite dissociative adsorption on iron by combined first-principle calculations and XPS experiments
Authors: Righi M. C. , Loehlé S. , de Barros Bouchet M. I. , Philippon D. , Martin J. M.
Published: November 2015

The reaction of trimethyl-phosphite, TMPi, with a clean Fe(110) surface has been investigated by ab initio calculations.
Tunable properties of GO-doped CoFe2O4 nanofibers elaborated by electrospinning
Authors: Eid C. , Assaf E. , Habchi R. , Miele P. , Bechelany M.
Published: November 2015

We report on the synthesis of cobalt ferrite (CoFe2O4) nanofibers doped with graphene oxide (GO) via the electrospinning technique and the study of their chemical, structural and magnetic properties.
Influence of silicate sol–gel host matrices and catalyst agents on the luminescent properties of Eu3+/Gd3+ under different excitation wavelengths
Authors: Szpikowska-Sroka B. , Pawlik N. , Goryczka T. , Pisarski W. A.
Published: November 2015

Sol–gel silicate glasses co-doped with Gd3+ and Eu3+ ions were successfully obtained and the pronounced effect of the matrix composition on the luminescent properties and energy transfer process from Gd3+ to Eu3+ was confirmed.
Supramolecular assemblies of organotin(iv)–diphosphoryl adducts: insights from X-rays and DFT
Authors: Gholivand Khodayar , Gholami Akram , Schenk Kurt J. , Esrafili Mehdi D. , Farshadfar Kaveh
Published: November 2015

The influence of tin-bonded substituents on the organization of the crystal structures and also coordination interactions were discussed using geometrical parameters, Hirshfeld analysis and theoretical calculations.
Optimization of the process parameters for the fabrication of a polymer coated layered double hydroxide-methotrexate nanohybrid for the possible treatment of osteosarcoma
Authors: Ray Sayantan , Mishra Akhilesh , Mandal Tapan Kumar , Sa Biswanath , Chakraborty Jui
Published: November 2015

The study demonstrates the method of optimization for the development of PLGA encapsulated LDH-MTX, MTX and their in vitro and in vivo evaluation.
Synthesis of hexahydroquinoline (HHQ) derivatives using ZrOCl2·8H2O as a potential green catalyst and optimization of reaction conditions using design of experiment (DOE)
Authors: Khazaei Ardeshir , Sarmasti Negin , Seyf Jaber Yousefi , Tavasoli Mahsa
Published: November 2015

In this investigation, hexahydroquinoline (HHQ) derivatives were synthesizedviaa one-pot reaction using dimedone, β-ketoester, ammonium acetate, and different aryl aldehydes.
Interconnected mesoporous NiO sheets deposited onto TiO2nanosheet arrays as binder-free anode materials with enhanced performance for lithium ion batteries
Authors: Li Guojian , Hu Hao , Zhu Qiancheng , Yu Ying
Published: November 2015

TiO2nanosheet arrays were synthesized by a hydrothermal method as a stable backbone for subsequent chemical bath deposition of interconnected NiO sheets.
Fabrication of thick-walled polyacrylonitrile (PAN) with high uniformity by an easily assembled double-T droplet generator
Authors: Peng Hao , Liu Meifang , Li Jing , Chen Sufen , Zhang Zhanwen , Li Bo , Ge Liqin
Published: November 2015

Thick-walled PAN microspheres with good wall thickness uniformity and sphericity were obtained by adjusting the solidifying temperature and the viscosity of O2phase.
Novel phosphorescent iridium(iii) complexes containing 2-thienyl quinazoline ligands: synthesis, photophysical properties and theoretical calculations
Authors: Mei Qunbo , Weng Jiena , Xu Zhijie , Tong Bihai , Hua Qingfang , Shi Yujie , Song Juan , Huang Wei
Published: November 2015

Highly efficient phosphorescent iridium complexes based on 2-thienyl quinazoline derivatives with various substituents are successfully prepared and fully characterized.
Bioinspired fabrication and lead adsorption property of nano-hydroxyapatite/chitosan porous materials
Authors: Lei Yong , Chen Wei , Lu Bin , Ke Qin-Fei , Guo Ya-Ping
Published: November 2015

Nano-hydroxyapatite/chitosan porous materials possess great applications for removal of Pb2+ ions from environmental and industrial wastes.
3D porous α-Ni(OH)2nanostructure interconnected with carbon black as a high-performance gas sensing material for NO2at room temperature
Authors: Chu Zhenyu , Sun Hongxin , Xu He , Zhou Jiao , Zhang Guo , Xie Yu , Li Li , Shi Keying
Published: November 2015

The 3D porous α-Ni(OH)2/carbon black nanostructure composites were fabricatedviaa simple refluxing method using SDBS as the template. The composites exhibited excellent sensing properties with fast response and low detection limit of NO2at room temperature.
Pseudopeptide polymer coating for improving biocompatibility and corrosion resistance of 316L stainless steel
Authors: Liu Songtao , Chen Chaoshi , Chen Lijuan , Zhu Haikun , Zhang Chong , Wang Yanmei
Published: November 2015

The coating formed by electrochemical assembly of hydrolyzed poly(2-methyl-2-oxazoline) and dopamine could improve the migration and proliferation of HUVECs.
Topological structure influences on the gel formation process and mechanical properties of l-lysine based supramolecular gels
Authors: Chen Si , He Huiwen , Tang Guodong , Wu Bozhen , Ma Meng , Shi Yanqin , Wang Xu
Published: November 2015

The influence of a minor modification of the topological structure of a gelator's core on the mechanism of the self-assembly processes and the resultant gel properties were researched.
Synthesis and characterisation of 3-dimensional hydroxyapatite nanostructures using a thermoplastic polyurethane nanofiber sacrificial template
Authors: Poorvisha R. , Suriyaraj S. P. , Thavamani P. , Naidu Ravi , Megharaj Mallavarapu , Bhattacharyya Amitava , Selvakumar R.
Published: November 2015

A facile synthesis of shape controlled three dimensional hydroxyapatite nanostructures (HAp) using a sacrificial thermoplastic polyurethane (TPU) nanofiber template.
P-doped carbon dots act as a nanosensor for trace 2,4,6-trinitrophenol detection and a fluorescent reagent for biological imaging
Authors: Shi Dechao , Yan Fanyong , Zheng Tancheng , Wang Yinyin , Zhou Xuguang , Chen Li
Published: November 2015

A simple and rapid method for sensitive and selective detection of 2,4,6-trinitrophenol (TNP) was developed with the use of water-soluble carbon dots (CDs) as a nanosensor.
Quercetin in anti-diabetic research and strategies for improved quercetin bioavailability using polymer-based carriers – a review
Authors: Mukhopadhyay Piyasi , Prajapati A. K.
Published: November 2015

With numerous pharmacological and biological functions bio-flavonoids gain appreciable attention in diabetes and other therapeutic research.
A selenium-confined porous carbon cathode from silk cocoons for Li–Se battery applications
Authors: Jia Min , Mao Cuiping , Niu Yubin , Hou Junke , Liu Sangui , Bao Shujuan , Jiang Jian , Xu Maowen , Lu Zhisong
Published: November 2015

A composite of selenium (Se) and a rich porous carbon material (PCM) with mesopores from silk cocoons is explored as a cathode for lithium–selenium (Li–Se) batteries for the first time.
Physicochemical and micromechanical investigation of a nanocopper impregnated fibre reinforced nanocomposite
Authors: Kabir Chowdhury Md. Najmul , Ismail Ahmad Fauzi , Khan Maksudur Rahman , Hossen Beg Mohammad Dalour , Dzarfan Othman Mohd Hafiz , Gohari Rasoul Jamshidi , Moslehyani Ali
Published: November 2015

This paper outlines the synthesis of a novel sustainable nanocomposite and the investigation of its physicochemical and mechanical properties using micromechanical models.
Shape controlled synthesis of multi-branched gold nanocrystals through a facile one-pot bifunctional biomolecular approach
Authors: Sajitha M. , Vindhyasarumi A. , Gopi A. , Yoosaf K.
Published: November 2015

Microscopic and spectroscopic analysis of multiple types of nanocrystal formation in a one pot seedless and surfactantless procedure.
Synthesis of a new class of naphthoquinone glycoconjugates and evaluation of their potential as antitumoral agents
Authors: Campos Vinicius R. , Cunha Anna C. , Silva Wanderson A. , Ferreira Vitor F. , Santos de Sousa Carla , Fernandes Patrícia D. , Moreira Vinícius N. , da Rocha David R. , Dias Flaviana R. F. , Montenegro Raquel C. , de Souza Maria C. B. V. , Boechat Fernanda da C. S. , Franco Caroline F. J. , Resende Jackson A. L. C.
Published: November 2015

A novel series of carbohydrate-based naphthoquinones was synthesized and evaluated for cytotoxicity against different human cancer cell lines (HCT-116, A-549 and MDA-MB 435). The compounds derived from juglone showed better cytotoxicity profiles.
An eco-friendly wood adhesive from soy protein and lignin: performance properties
Authors: Luo Jing , Luo Jianlin , Yuan Cheng , Zhang Wei , Li Jianzhang , Gao Qiang , Chen Hui
Published: November 2015

The aim of this study was to improve the water resistance of a soybean meal-based adhesive with a low-cost lignin-based resin (LR).
Synthesis, biological evaluation and mechanism study of a class of cyclic combretastatin A-4 analogues as novel antitumour agents
Authors: Yan Jun , Pang Yanqing , Chen Jie , Sheng Jianfei , Hu Jinhui , Huang Ling , Li Xingshu
Published: November 2015

In the search for novel antitumor agents, a series of cyclicCA-4analogues bearing amide group, A–B or B–C ring condensation, and CC or CN bond in the B ring were designed, synthesized and identified as microtubule inhibitors.
Formation mechanism of spinel LiTi2O4 prepared by carbon thermal reduction reaction
Authors: Yang Guijun , Yang Jianwen , Zhang Lingzhi
Published: November 2015

The formation mechanism of LiTi2O4 is investigated by in situ variable temperature X-ray diffraction and thermal gravimetric analysis/differential scanning calorimetry system.
A fluorescence active gold nanorod–quantum dot core–satellite nanostructure for sub-attomolar tumor marker biosensing
Authors: Wu Xiaoling , Gao Fengli , Xu Liguang , Kuang Hua , Wang Libing , Xu Chuanlai
Published: November 2015

The accurate monitoring of trace cancer biomarkers is crucial for the early diagnosis of cancer.
The first electrocatalytic stereoselective multicomponent synthesis of cyclopropanecarboxylic acid derivatives
Authors: Vereshchagin Anatoly N. , Elinson Michail N. , Egorov Mikhail P.
Published: November 2015

Multicomponent electrolysis of aldehydes and two different C–H acids in the presence of NaBr–NaOAc in a simple beaker results in stereoselective formation of trialkyl (2R*,3R*)-3-aryl-2-cyanocyclopropane-1,1,2-tricarboxylates in 52–87% yields.
Microstructural, rheological, and antibacterial properties of cross-linked chitosan emulgels
Authors: Lei Lingling , He Zongze , Chen Huanle , McClements David Julian , Li Bin , Li Yan
Published: November 2015

Antimicrobial emulgels were fabricated by cross-linking chitosan using cinnamaldehyde (CA) nanoemulsions.
Quality-enhanced AlN epitaxial films grown on Al substrates by two-step growth
Authors: Wang Wenliang , Yang Weijia , Wang Haiyan , Zhu Yunnong , Li Guoqiang
Published: November 2015

Quality-enhanced AlN epitaxial films have been grown on Al substrates by pulsed laser deposition with two-step growth by the combination of low-temperature and high-temperature growth.
Monolayer MoS2 quantum dots as catalysts for efficient hydrogen evolution
Authors: Qiao Wen , Yan Shiming , Song Xueyin , Zhang Xing , Sun Yuan , Chen Xing , Zhong Wei , Du Youwei
Published: November 2015

A multi-exfoliation route was used to prepare monolayer MoS2 quantum dots with improved electrocatalytic activity for hydrogen evolution.
Synthesis and13C-NMR analysis of an ethylene copolymer with 9-decen-1-ol
Authors: Hou Liping , Wang Wei , Sheng Jianfang , Liu Changcheng
Published: November 2015

Synthesis and characterization of an ethylene/9-dencen-1-ol copolymer revealed the effect of polymerization conditions, catalysts and comonomer on the activity and polymer microstructure.
Spray Conform 7075 Al
Authors: YeGao Chen , Yi Zhong , JianCheng Yin , LiQiang Wang , Huan Yang , LiNa Liu , YingLi Liu
Published: November 2015

Spray Conform is a near-net-shape technology that combines elements of spray forming and Conform.
Preparation of alternating multilayered polyethylene oxide/poly(ε-caprolactone) and the confined crystallization of the composites
Authors: Zhang Cong , Chen Xia , Liu Guiting , Wu Hong , Li Jiang , Chen Rong , Guo Shaoyun
Published: November 2015

Due to the effects of the interfacial interaction between PEO and PCL layers and the spatial confinement. The crystallization behaviors of PEO and PCL in multilayered structure varied distinguishably as the layer number became higher.
MnFe2O4–Fe3O4 core–shell nanoparticles as a potential contrast agent for magnetic resonance imaging
Authors: Venkatesha N. , Pudakalakatti Shivanand M. , Qurishi Yasrib , Atreya Hanudatta S. , Srivastava Chandan
Published: November 2015

In recent years, magnetic core–shell nanoparticles have received widespread attention due to their unique properties that can be used for various applications.
Copper(ii) acetate catalysed ring-opening cross-coupling of cyclopropanols with sulfonyl azides
Authors: Shen Mei-Hua , Lu Xiao-Long , Xu Hua-Dong
Published: November 2015

A copper(ii) acetate catalyzed ring-opening cross-coupling of cyclopropanol with sulfonyl azide has been developed.
A smart fluorescent probe for simultaneous detection of GSH and Cys in human plasma and cells
Authors: Pan Jian , Zhang Yue , Xu Junchao , Liu Jinbiao , Zeng Lintao , Bao Guang-Ming
Published: November 2015

A smart fluorescent probe was developed to simultaneously detect Cys and GSH in different emission channel with low detection limit.
Amine-functionalized metal organic framework (NH2-MIL-125(Ti)) incorporated sodium alginate mixed matrix membranes for dehydration of acetic acid by pervaporation
Authors: Su Zhenbo , Chen Jian Hua , Sun Xue , Huang Yihong , Dong Xinfei
Published: November 2015

In the present paper, amine-functionalized metal organic framework (NH2-MIL-125(Ti)) crystal nanoparticles were synthesized and incorporated into a sodium alginate (NaAlg) matrix to prepare novel NH2-MIL-125(Ti)/NaAlg mixed matrix membranes (MMMs).
Rapid, effective deprotection of tert-butoxycarbonyl (Boc) amino acids and peptides at high temperatures using a thermally stable ionic liquid
Authors: Bhawal Sumit S. , Patil Rahul A. , Armstrong Daniel W.
Published: November 2015

A method for high temperature Boc deprotection of amino acids and peptides in a phosphonium ionic liquid is described.
Simultaneous determination of dexamethasone and lenalidomide in rat plasma by solid phase extraction and ultra-performance liquid chromatography-tandem mass spectrometry: application to pharmacokinetic studies
Authors: Maher Hadir M. , Alzoman Nourah Z. , Alshehri Mona M. , Aljohar Haya I. , Shehata Shereen , Alossaimi Manal , Abanmy Norah O.
Published: November 2015

Determination of dexamethasone and lenalidomide in plasma by SPE and UPLC-MS/MS for the purpose of TDM: application to pharmacokinetic studies.
Visualization of problem solving related to the quantitative composition of solutions in the dynamic GeoGebra environment
Authors: Kostić V. Dj. , Stankov Jovanović V. P. , Sekulić T. M. , Takači Dj. B.
Published: November 2015

Problem solving in the field of quantitative composition of solutions (QCS), expressed as mass share and molar concentration, is essential for chemistry students. Since successful chemistry education is based on different mathematical contents, it is important to be proficient in both mathematical and chemistry concepts as well as interconnections between them. One of the main objectives of this study was to create dynamic worksheets, applying softwareGeoGebra, which makes a strong link between real life problems from the field of QCS and their visual representations. The created models offer interactive connection within triangle –numerical data, concrete and abstract visual representations of the problem. The other important issue was to investigate if application of this novel teaching approach will lead to improvement of students' achievements in QCS problem solving. Ninety students of the first, second and third year of the bachelor chemistry study program, were subjects of the research. The students were classified into experimental and control groups based on the results of the initial test. Both groups were trained in the same pool of problems from the QCS field. In the control group the traditional approach based on algebraic methods was applied. The new didactic approach to the graphical method based on the dynamic properties ofGeoGebrawas presented to the experimental group. After two months, the final testing of all students was conducted. The students' answers were analysed and it is shown that the results of the experimental group were significantly better than the results of students in the control group. The results of these research studies confirmed that the students' learning achievement in solving QCS problems is better when they are familiar with theGeoGebraenvironment.
Dye synthesis in the Pechmann reaction: catalytic behaviour of samarium oxide nanoparticles studied using single molecule fluorescence microscopy
Authors: Hodgson Gregory K. , Impellizzeri Stefania , Scaiano Juan C.
Published: November 2015

Single molecule fluorescence microscopy has shown that samarium oxide nanoparticles efficiently catalyze the formation of coumarin 153 via a semi-heterogeneous catalytic process.
Rhodium-catalyzed asymmetric synthesis of silicon-stereogenic silicon-bridged arylpyridinones
Authors: Shintani Ryo , Takano Ryo , Nozaki Kyoko
Published: November 2015

A rhodium-catalyzed regio- and enantioselective synthesis of silicon-stereogenic silicon-bridged arylpyridinones was developed. A reasonable catalytic cycle was also experimentally established.
Reply to the Comments on “Curvature capillary migration of microspheres” by P. Galatola and A. Würger
Authors: Sharifi-Mood Nima , Liu Iris B. , Stebe Kathleen J.
Published: November 2015

We have reported microparticle migration in experiment on curved fluid interfaces, and derived expressions for the associated curvature capillary energy for particles with either pinned or equilibrium contact lines. Experiment agrees with the expression for pinned contact lines. Our predicted forms differ from others in the literature, and are challenged in two Comments. Here, we address these Comments and identify sources of conceptual misunderstanding.
Physically crosslinked polyvinyl alcohol and gelatin interpenetrating polymer network theta-gels for cartilage regeneration
Authors: Miao Tianxin , Miller Emily Julia , McKenzie Canaan , Oldinski Rachael Ann
Published: November 2015

Theta-gels are hydrogels that form during the solidification and phase separation of two dislike polymers, in which a low molecular weight polymer behaves as a porogen and is removed through dialysis.
Facile fabrication and excellent electrical conductivity of ultralong nanobelt film of butoxy-substituted copper phthalocyanines
Authors: Yang Jia-Mei , Peng Hong-Dan , Li Jia-Jia , Wu Hao-Di , Pan Ge-Bo
Published: November 2015

Well-defined single-crystalline nanobelts of butoxy-substituted copper phthalocyanine (CuPcOC4) have been rapidly prepared by a facile and reliable non-solvent nucleation method without any template.
Regulation of red to near-infrared emission in Mn2+ single doped magnesium zinc phosphate solid-solution phosphors by modification of the crystal field
Authors: Ma Y. Y. , Hu J. Q. , Song E. H. , Ye S. , Zhang Q. Y.
Published: November 2015

The different Mg/Zn ratios of (Mg1−xZnx)2.97(PO4)2:0.03Mn2+ result in various PL intensities and spectra profiles, which are related to the crystal field strength and local environment of the Mn2+ ions.
A self-powered organolead halide perovskite single crystal photodetector driven by a DVD-based triboelectric nanogenerator
Authors: Fang Huajing , Li Qiang , Ding Jie , Li Nan , Tian He , Zhang Lijing , Ren Tianling , Dai Jiyan , Wang Liduo , Yan Qingfen
Published: November 2015

The integration of a CH3NH3PbI3 single crystal photodetector with a TENG leads to a self-powered photodetector with a large responsivity and a wide detection range.
Modified Anderson–Darling detector for spectrum sensing
Authors: Scheers B. , Teguig D. , Le Nir V.
Published: November 2015

Goodness‐of‐fit testing is a promising approach for blind spectrum sensing in cognitive radio applications. A modification on the Anderson–Darling detector by taking into account the physical characteristics of spectrum sensing is presented, resulting in a reduction of the false alarm rate by a factor of two for a given detection threshold in the binary hypothesis test.
Exponential degenerate kernel function for electromagnetic scattering problems
Authors: Pan Canlin , Xu Yigang , Ling Guoping , Zhang Ming , Bo Ya‐ming , Cheng Chonghu
Published: November 2015

An efficient exponential degenerate kernel function is proposed for electromagnetic scattering problem in this Letter, which provides another diagonal form of the translation matrix. The exponential degenerate kernel function is numerically determined for kernel independency. The error analysis verifies that less expansion terms are needed for the given accuracy for simulations. Numerical results validate the accuracy of the proposed degenerate kernel. It can be concluded that the proposed kernel approximation outperforms the expansion in the fast multipole method in both computational time and storage.
HEVC fast reference picture selection
Authors: Yang Shih‐Hsuan , Huang Kai‐Sheng
Published: November 2015

The new high efficiency video coding (HEVC) standard facilitates the realisation of ultrahigh‐definition video applications. Although the compression efficiency of the HEVC standard is double that of the well‐established H.264 standard, HEVC incurs a considerably higher encoding complexity. This Letter presents an algorithm aimed at expediting reference picture selection processes in HEVC encoding. The proposed algorithm is primarily based on a reference picture and block discovered using the advanced motion vector prediction (AMVP) algorithm. Two acceleration conditions are included in the proposed algorithm. The first early‐decision condition entails examining the rate‐distortion (RD) cost associated with AMVP, and if this cost is lower than a predefined threshold, motion estimation is confined to the AMVP‐selected reference picture. Furthermore, for coding units of size 64 × 64 (N = 32) with a prediction‐unit (PU) partitioning of 2N × N or N × 2N, the second PU uses the same reference picture as the first PU if the first PU satisfies the first early‐decision condition. The experimental results revealed that the proposed algorithm considerably reduced the total encoding time with negligible RD degradation.
Triple‐band ground radiation antenna for GPS, WiFi 2.4 and 5 GHz band applications
Authors: Zhang Rui , Kim Hyung‐Hoon , Kim Hyeondong
Published: November 2015

A compact triple‐band ground radiation antenna for GPS, WiFi 2.4 and 5 GHz band operations in mobile terminals is proposed. Within a considerably small area of 12 × 6 mm, by employing the inductive excitation concept of characteristic radiation modes on a mobile terminal chassis, impedance bandwidths of 21, 210, and 1820 MHz are achieved, covering the GPS, WiFi 2.4 and 5 GHz bands, respectively, at VSWR <2.
Adaptive decentralised dynamic surface control for non‐linear large‐scale systems against actuator failures
Authors: Hashemi Mahnaz , Askari Javad , Ghaisari Jafar
Published: November 2015

This study presents an adaptive decentralised dynamic surface control (DSC) approach for a class of large‐scale non‐linear systems with unknown non‐linear functions, unknown control gains, time‐varying delays and in the presence of unknown actuator failures. The considered actuator failures are modelled to cover both loss of effectiveness and stuck at some time‐varying values where the values, patterns and time occurrences of the failures are unknown. With the help of neural networks to approximate the unknown non‐linear functions, a novel adaptive actuator failure compensation controller is developed based on the backstepping method and the DSC approach. The appropriate Lyapunov–Krasovskii functionals are introduced to design new adaptive laws to compensate the unknown actuator failures as well as uncertainties from unknown non‐linearities and time delays. The proposed design method does not require a priori knowledge of the bounds of the unknown time delays and actuator failures. The boundedness of all the closed‐loop signals is guaranteed and the tracking errors are proved to converge to a small neighbourhood of the origin. The proposed approach is employed for a double inverted pendulums benchmark and a chemical reactor system. The simulation results show the effectiveness of the proposed method.
Active third‐harmonic injection indirect matrix converter with dual three‐phase outputs
Authors: Wang Hui , Su Mei , Sun Yao , Liu Yonglu , Zhang Guanguan , Li Hua , Zhang Wei , Weihua Gui , Feng Jianghua
Published: November 2015

This study presents an active third‐harmonic injection indirect matrix converter (3HI2MC) topology with dual three‐phase outputs. The presented 3HI2MC has the advantages of sinusoidal input and output currents, bi‐directional power flow, and can provide two sets of three‐phase outputs, whose frequencies and amplitudes can be regulated independently. Compared with the conventional indirect matrix converter (IMC), the input reactive power control range is extended significantly, and the converter can even work as a static compensator. Moreover, a maximal voltage transfer ratio of 0.866 is achievable under all operation conditions. Furthermore, operations of the rectifier and inverters are independent. Thus, for a 3HI2MC system containing multiple voltage‐source‐type inverters (VSIs), modulation and control task can be implemented flexibly by a separate controller for each VSI, while it is difficult for the conventional IMCs to achieve such a goal. All of the features above make 3HI2MC competitive for the applications that require multiple three‐phase outputs such as multiple drives. After describing the topology structure, operating principles and control algorithm in detail, simulation and experimental results are presented to demonstrate the validity and effectiveness of the proposed topology.
A robust domain decomposition method for the Helmholtz equation with high wave number
Authors: Chen Wenbin , Liu Yongxiang , Xu Xuejun
Published: November 2015

In this paper we present a robust Robin−Robin domain decomposition (DD) method for the Helmholtz equation with high wave number. Through choosing suitable Robin parameters on different subdomains and introducing a new relaxation parameter, we prove that the new DD method is robust, which means the convergence rate is independent of the wave number k for kh = constant and the mesh size h for fixed k. To the best of our knowledge, from the theoretical point of view, this is a first attempt to design a robust DD method for the Helmholtz equation with high wave number in the literature. Numerical results which confirm our theory are given.
Delegation ärztlicher Leistungen an nichtärztliche Fachkräfte: Der Versorgungsansatz agneszwei in Brandenburg – eine qualitative Akzeptanzanalyse
Authors: Schmiedhofer M. , Brandner S. , Kuhlmey A.
Published: November 2015

Hintergrund: Als Antwort auf den zunehmenden Mangel hausärztlicher Versorgung in ländlichen Regionen wurden Projekte durchgeführt, bei denen ärztliche Tätigkeiten an qualifizierte Medizinische Fachangestellte oder Krankenpfleger/innen delegiert werden. Evaluationen zeigen hohe Zufriedenheitswerte bei allen beteiligten Akteur/inn/en. Dieser Beitrag untersucht die Kooperationsbeziehung der Gesundheitsberufe in einer um Fallmanagement erweiterten Versorgungsstruktur mit der Delegation ärztlicher Aufgaben agneszwei in Brandenburg qualitativ.

Methode: 10 leitfadengestützte qualitative Experteninterviews wurden mit 6 Ärzt/inn/en und 4 Krankenpflegerinnen/Medizinischen Fachangestellten geführt.

Ergebnisse: Die Zusammenarbeit wird von beiden Berufsgruppen als gut beschrieben und in der Versorgungsstruktur ein Vorteil für die Patientinnen und Patienten gesehen. Die strikte Anerkennung des ärztlichen Tätigkeitsvorbehaltes wird dabei als Voraussetzung erfolgreicher Zusammenarbeit benannt. Die ärztlichen Expert/inn/en werden in ihrem Alltag entlastet. Die Fachkräfte ziehen aus einer erfolgreich aufgebauten Vertrauensbeziehung zu den Patient/inn/en berufliche Zufriedenheit. Eine Implementierung von Delegationstätigkeiten in die Regelversorgung wird von allen Fachkräften uneingeschränkt befürwortet, während die Mehrheit der Ärzt/inn/en trotz guter Bewertung des eigenen Projektes skeptisch bis ablehnend ist.

Schlußfolgerung: Trotz der hohen Akzeptanz der teilweisen Übernahme medizinischer Aufgaben steht der standespolitische Aushandlungsprozeß neuer kooperativer Arbeitsformen in der ambulanten Versorgung erst am Anfang.
Sichtweisen schwangerer Frauen zu ihrem Ernährungs- und Bewegungsverhalten: eine Beratungsgrundlage zur Vermeidung exzessiver Gewichtszunahme
Authors: Nehring I. , Feurig S. , Roebl-Matthieu M. , Schiessl B. , Kries R.
Published: November 2015

Eine Gewichtszunahme in der Schwangerschaft oberhalb der IOM-Empfehlungen erhöht das Risiko für Schwangerschaftskomplikationen und für späteres Übergewicht bei Mutter und Kind. Deshalb sollten Schwangere hinsichtlich ihrer Zunahme entsprechend beraten werden. Welche Bedürfnisse haben Frauen bezüglich der Beratung? Hierzu wurden 34 Schwangere in offenen Interviews befragt, welche mit der Frequenzanalyse nach Mayring ausgewertet wurden. Es wurde erkannt, dass die gesundheitlichen Auswirkungen einer zu starken Gewichtszunahme von den Frauen unzureichend wahrgenommen werden. Weiterhin konnten 4 verschiedene Verhaltensweisen bezüglich der Ernährung abgeleitet werden: (i) Schwangere, die zwar gut informiert sind, dies jedoch nicht umsetzen; (ii) Schwangere, die Informationen und Wissen konsequent umsetzen, (iii) Schwangere, die sich vom Körpergefühl leiten lassen; und (iv) vorwiegend indifferente Schwangere. Frauen, die schon vor der Schwangerschaft inaktiv waren, ließen sich auch in der Schwangerschaft nicht zu Sport motivieren. Für die Planung zukünftiger Interventionen sollte berücksichtigt werden, dass Informationsbedarf hinsichtlich der Gewichtszunahme und gesunder Ernährung in der Schwangerschaft besteht. Abhängig vom Verhaltensmuster der Frau wird eine Ernährungsintervention nicht immer den gewünschten Erfolg erzielen. Weiterhin ist die Motivation und Aufklärung zu geeigneten Sportarten eine besondere Herausforderung.
Tongue Blade Bite Test Predicts Mandible Fractures
Authors: Neiner John , Free Rachael , Caldito Gloria , Moore-Medlin Tara , Nathan Cherie-Ann
Published: November 2015

The aim of the study is to evaluate the utility of a simple tongue blade bite test in predicting mandible fractures and use this test as an alternative screening tool for further workup. This is a retrospective chart review. An institutional review board approved the retrospective review of patients evaluated by the Department of Otolaryngology at a single institution for facial trauma performed from November 1, 2011, to February 27, 2014. Patients who had a bite test documented were included in the study. CT was performed in all cases and was used as the gold standard to diagnose mandible fractures. Variables analyzed included age, sex, fracture type/location on CT, bite test positivity, and operative intervention. A total of 86 patients met the inclusion criteria and of those 12 were pediatric patients. Majority of the patients were male (80.2%) and adult (86.0%; average age: 34.3 years). Fifty-seven patients had a negative bite test and on CT scans had no mandible fracture. Twenty-three patients had a positive bite test and a CT scan confirmed fracture. The bite test revealed a sensitivity of 88.5% (95% CI: 69.8–97.6%), specificity of 95.0% (95% CI:86.1–99%), positive predictive value [PPV] of 88.5% (95% CI: 69.8–97.6%), and negative predictive value [NPV] of 95.0% (95% CI: 86.1–99.0%). Among pediatric patients, the sensitivity was 100% (95% CI: 29.9–100%), specificity was 88.9% (95% CI: 68.4–100%), PPV was 75.0% (95% CI: 19.4–99.4%), and NPV was 100% (95% CI: 63.1–100%). The tongue blade bite test is a quick inexpensive diagnostic tool for the otolaryngologist with high sensitivity and specificity for predicting mandible fractures. In the pediatric population, where avoidance of unnecessary CT scans is of highest priority, a wider range of data collection should be undertaken to better assess its utility.
Morphology-controlled growth of perylene derivative induced by double-hydrophilic block copolymers
Authors: Huang Minghua , Antonietti Markus , Cölfen Helmut
Published: November 2015

Controlled growth of technically relevant perylene derivative 3, 4, 9, 10-perylenetetracarboxylic acid potassium salt (PTCAPS), with tuneable morpologies, has been successfully realized by a recrystallization method using a double-hydrophilic block copolymer poly (ethylene glycol)-block poly (ethyleneimine) (PEG-b-PEI) as the structure directing agent. The {001} faces of PTCAPS are most polar and adsorb the oppositively charged polymer additive PEG-b-PEI well by electrostatic attraction. By simply adjusting the PEG-b-PEI concentration, systematic morphogenesis of PTCAPS from plates to microparticles composed of various plates splaying outwards could be realized. Furthermore, the variation of pH value of the recrystallization solution could induce the change of the interaction strength between PEG-b-PEI additive and PTCAPS and thus modify the morphology of PTCAPS from microparticles composed of various plates to ultralong microbelts.
Dissipation in noisy chemical networks: The role of deficiency
Authors: Polettini M. , Wachtel A. , Esposito M.
Published: November 2015

We study the effect of intrinsic noise on the thermodynamic balance of complex chemical networks subtending cellular metabolism and gene regulation. A topological network property called deficiency, known to determine the possibility of complex behavior such as multistability and oscillations, is shown to also characterize the entropic balance. In particular, when deficiency is zero the average stochastic dissipation rate equals that of the corresponding deterministic model, where correlations are disregarded. In fact, dissipation can be reduced by the effect of noise, as occurs in a toy model of metabolism that we employ to illustrate our findings. This phenomenon highlights that there is a close interplay between deficiency and the activation of new dissipative pathways at low molecule numbers.
Turbulence in vertical axis wind turbine canopies
Authors: Kinzel Matthias , Araya Daniel B. , Dabiri John O.
Published: November 2015

Experimental results from three different full scale arrays of vertical-axis wind turbines (VAWTs) under natural wind conditions are presented. The wind velocities throughout the turbine arrays are measured using a portable meteorological tower with seven, vertically staggered, three-component ultrasonic anemometers. The power output of each turbine is recorded simultaneously. The comparison between the horizontal and vertical energy transport for the different turbine array sizes shows the importance of vertical transport for large array configurations. Quadrant-hole analysis is employed to gain a better understanding of the vertical energy transport at the top of the VAWT arrays. The results show a striking similarity between the flows in the VAWT arrays and the adjustment region of canopies. Namely, an increase in ejections and sweeps and decrease in inward and outward interactions occur inside the turbine array. Ejections are the strongest contributor, which is in agreement with the literature on evolving and sparse canopy flows. The influence of the turbine array size on the power output of the downstream turbines is examined by comparing a streamwise row of four single turbines with square arrays of nine turbine pairs. The results suggest that a new boundary layer forms on top of the larger turbine arrays as the flow adjusts to the new roughness length. This increases the turbulent energy transport over the whole planform area of the turbine array. By contrast, for the four single turbines, the vertical energy transport due to turbulent fluctuations is only increased in the near wake of the turbines. These findings add to the knowledge of energy transport in turbine arrays and therefore the optimization of the turbine spacing in wind farms.
Evolution of laser induced electromagnetic postsolitons in multi-species plasma
Authors: Liu Yue , Klimo Ondřej , Esirkepov Timur Zh. , Bulanov Sergei V. , Gu Yanjun , Weber Stefan , Korn Georg
Published: November 2015

The evolution of an s-polarized relativistic electromagnetic soliton created in multi-species plasma by an intense short laser pulse is investigated using two-dimensional particle-in-cell simulations. The multi-component plasma consists of electrons and high-Z ions with a small addition of protons. By comparison, the evolution of postsoliton is very different from that in hydrogen plasma. A halo-like structure is found in spatial patterns of both electromagnetic fields and electron densities. The process of energy depletion is much slower due to the smaller charge-to-mass ratio of ions, which implies a better way of detecting postsolitons in simulations and experiments. In addition, it is found that the Coulomb explosion of high-Z ions in the postsoliton stage facilitates low-Z ion acceleration, and the maximum energy of low-Z ions increases with the component ratio of high-Z to low-Z ions.
Rapid doubling of the critical current of YBa2Cu3O7−δ coated conductors for viable high-speed industrial processing
Authors: Leroux M. , Kihlstrom K. J. , Holleis S. , Rupich M. W. , Sathyamurthy S. , Fleshler S. , Sheng H. P. , Miller D. J. , Eley S. , Civale L. , Kayani A. , Niraula P. M. , Welp U. , Kwok W.-K.
Published: November 2015

We demonstrate that 3.5-MeV oxygen irradiation can markedly enhance the in-field critical current of commercial second generation superconducting tapes with an exposure time of just 1 s per 0.8 cm2. The speed demonstrated here is now at the level required for an industrial reel-to-reel post-processing. The irradiation is made on production line samples through the protective silver coating and does not require any modification of the growth process. From TEM imaging, we identify small clusters as the main source of increased vortex pinning.
The effects of ultraviolet-ozone-treated ultra-thin MnO-doped ZnO film as anode buffer layer on the electrical characteristics of organic light-emitting diodes
Authors: Lu Hsin-Wei , Kao Po-Ching , Juang Yung-Der , Chu Sheng-Yuan
Published: November 2015

In this study, the efficiency of organic light-emitting diodes (OLEDs) was enhanced by depositing an MnO-doped ZnO film as a buffer layer between the indium tin oxide (ITO) electrode and the α-naphthylphenylbiphenyldiamine hole transport layer. The enhancement mechanism was systematically investigated, and the X-ray photoelectron spectroscopy and ultraviolet photoelectron spectroscopy results revealed the formation of the UV-ozone-treated MnO-doped ZnO film. With this film, the work function increased from 4.8 eV (standard ITO electrode (∼10±5 Ω/◻)) to 5.27 eV (UV-ozone-treated MnO-doped ZnO deposited on the ITO electrode with 1 wt. % for 1 nm), while the surface roughness of the UV-ozone-treated MnO-doped ZnO film was smoother than that of the ITO electrode. The deposited UV-ozone-treated MnO-doped ZnO film increased the surface energy and polarity of the ITO surface, as determined from contact angle measurements. Further, results from admittance spectroscopy showed that the inserted UV-ozone-treated MnO-doped ZnO film increased the capacitance and conductance of the OLEDs. It was also found that the carrier injection increased in the space-charge region when the UV-ozone-treated MnO-doped ZnO buffer layer was inserted. Moreover, the turn-on voltage of the devices decreased from 3.8 V to 3.2 V, the luminance increased from 7588 cd/m2 to 20 350 cd/m2, and the current efficiency increased from 3.2 cd/A to 5.8 cd/A when a 1 nm-thick UV-ozone-treated MnO-doped ZnO film with 1 wt. % was inserted as a buffer layer in the OLEDs.
Preparation of meta-stable phases of barium titanate by Sol-hydrothermal method
Authors: Selvaraj Mahalakshmi , Venkatachalapathy V. , Mayandi J. , Karazhanov S. , Pearce J. M.
Published: November 2015

Two low-cost chemical methods of sol–gel and the hydrothermal process have been strategically combined to fabricate barium titanate (BaTiO3) nanopowders. This method was tested for various synthesis temperatures (100 °C to 250 °C) employing barium dichloride (BaCl2) and titanium tetrachloride (TiCl4) as precursors and sodium hydroxide (NaOH) as mineralizer for synthesis of BaTiO3 nanopowders. The as-prepared BaTiO3 powders were investigated for structural characteristics using x-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The overall analysis indicates that the hydrothermal conditions create a gentle environment to promote the formation of crystalline phase directly from amorphous phase at the very low processing temperatures investigated. XRD analysis showed phase transitions from cubic - tetragonal - orthorhombic - rhombohedral with increasing synthesis temperature and calculated grain sizes were 34 – 38 nm (using the Scherrer formula). SEM and TEM analysis verified that the BaTiO3 nanopowders synthesized by this method were spherical in shape and about 114 - 170 nm in size. The particle distribution in both SEM and TEM shows that as the reaction temperature increases from 100 °C to 250 °C, the particles agglomerate. Selective area electron diffraction (SAED) shows that the particles are crystalline in nature. The study shows that choosing suitable precursor and optimizing pressure and temperature; different meta-stable (ferroelectric) phases of undoped BaTiO3 nanopowders can be stabilized by the sol-hydrothermal method.
Effect of different electrodes on the transport properties of ZnO nanofibers under humid environment
Authors: Imran Z. , Rasool Kamran , Batool S. S. , Ahmad Mushtaq , Rafiq M. A.
Published: November 2015

Relative humidity (RH) sensing properties of zinc oxide nanofibers (ZNF), synthesized using electrospinning technique, were studied by impedance spectroscopy. RH sensors were fabricated with two different electrodes (Au and Ni) using lithography on top of the nanofibers deposited on Si/SiO2 substrate. Compare with the Ni electrode sensor, Au electrode sensor exhibits larger sensitivity and quicker response/recovery. Capacitance, electrical conductivity and electrical modulus were studied at 40%-90% RH as a function of the frequency of the applied AC signal in the frequency range of 10−2-106 Hz. The corresponding response and recovery times are 3s and 5s for Au, and 6s and 10s for Ni electrode sensor, respectively. The sensors exhibited a reversible response with small hysteresis of less than 4% and 12% for Au and Ni electrodes respectively. Stability of the sensor device with Au electrode was confirmed by testing the device for 13 days. The excellent sensing characteristics and comparison of sensors with different electrode materials may offer an effective route for designing and optimizing RH sensors.
Coherent control of magnetization precession in electrically detected time domain ferromagnetic resonance
Authors: Wid O. , Wahler M. , Homonnay N. , Richter T. , Schmidt G.
Published: November 2015

We demonstrate coherent control of time domain ferromagnetic resonance by all electrical excitation and detection. Using two ultrashort magnetic field steps with variable time delay we control the induction decay in yttrium iron garnet (YIG). By setting suitable delay times between the two steps the precession of the magnetization can either be enhanced or completely stopped. The method allows for a determination of the precession frequency within a few precession periods and with an accuracy much higher than can be achieved using fast fourier transformation. Moreover it holds the promise to massively increase precession amplitudes in pulsed inductive microwave magnetometry (PIMM) using low amplitude finite pulse trains. Our experiments are supported by micromagnetic simulations which nicely confirm the experimental results.
Why should ethics approval be required prior to publication of health promotion research?
Authors: Newson Ainsley J. , Lipworth Wendy
Published: November 2015

Issue addressed

Most academic journals that publish studies involving human participants require evidence that the research has been approved by a human research ethics committee (HREC). Yet journals continue to receive submissions from authors who have failed to obtain such approval. In this paper, we provide an ethical justification of why journals should not, in general, publish articles describing research that has no ethics approval, with particular attention to the health promotion context.

Methods

Using theoretical bioethical reasoning and drawing on a case study, we first rebut some potential criticisms of the need for research ethics approval. We then outline four positive claims to justify a presumption that research should, in most instances, be published only if it has been undertaken with HREC approval.

Results

We present four justifications for requiring ethics approval before publication: (1) HREC approval adds legitimacy to the research; (2) the process of obtaining HREC approval can improve the quality of an intervention being investigated; (3) obtaining HREC approval can help mitigate harm; and (4) obtaining HREC approval demonstrates respect for persons.

Conclusion

This paper provides a systematic and comprehensive assessment of why research ethics approval should generally be obtained before publishing in the health promotion context.