bluuebunny/crossref_metadata_2025 huggingface dataset:
In vivo and continuous measurement of bisulfide in the hippocampus of rat's brain by an on-line integrated microdialysis/droplet-based microfluidic system
Authors: Gu Feidan , Zhou Xiaoyu , Zhu Xiaocui , Zhao Meiping , Hao Jie , Yu Ping , Mao Lanqun
Published: January 2015

An on-line and continuous approach was demonstrated forin vivomeasurement of bisulfide in rat's brain.
Determination of meloxicam in plasma samples using a highly selective and sensitive voltammetric sensor based on carbon paste electrodes modified by molecularly imprinted polymer nanoparticle–multiwall carbon nanotubes
Authors: Azodi-Deilami Saman , Asadi Ebadullah , Abdouss Majid , Ahmadi Fardin , Najafabadi Alireza Hassani , Farzaneh Sina
Published: January 2015

A highly selective voltammetric sensor for the determination of meloxicam using a MIP@MWCNT–CPE is introduced.
A chronopotentiometric flow injection system for aptasensing of E. coli O157
Authors: Lei Jiahong , Ding Jiawang , Qin Wei
Published: January 2015

In this research, we demonstrate a simple flow injection analysis system for the chronopotentiometric aptasensing of E. coli O157.
Protecting group free enantiospecific total syntheses of structurally diverse natural products of the tetrahydrocannabinoid family
Authors: Dethe Dattatraya H. , Erande Rohan D. , Mahapatra Samarpita , Das Saikat , B. Vijay Kumar
Published: January 2015

A simple, highly diastereoselective, Lewis acid catalyzed Friedel–Crafts coupling of a cyclic allylic alcohol with resorcinol derivatives has been developed.
Cu(NO3)2·3H2O-mediated cyanation of aryl iodides and bromides using DMF as a single surrogate of cyanide
Authors: Zhang Lianpeng , Lu Ping , Wang Yanguang
Published: January 2015

Cyanation of aryl iodides and bromides were approached by using DMF as a single source of “CN” in the presence of cheap Cu(NO3)2·3H2O.
Formation and in situ reactions of hypervalent iodonium alkynyl triflates to form cyanocarbenes
Authors: Dempsey Hyatt I. F. , Nasrallah Daniel J. , Maxwell Michael A. , Hairston A. Christina F. , Abdalhameed Manahil M. , Croatt Mitchell P.
Published: January 2015

The conversion of readily available silylalkynes, iodobenzene diacetate, and azide anions was utilized to form and react cyanocarbenes.
Virus-like particles as virus substitutes to design artificial virus-recognition nanomaterials
Authors: Sykora Sabine , Cumbo Alessandro , Belliot Gaël , Pothier Pierre , Arnal Charlotte , Dudal Yves , Corvini Philippe F.-X. , Shahgaldian Patrick
Published: January 2015

Functional recognition imprints of virus-like particles, at the surface of silica particles, were generated following a strategy based on protein-templated polycondensation of organosilanes.
Facile construction of well-defined fullerene–dendrimer supramolecular nanocomposites for bioapplications
Authors: Li Xiaojie , Watanabe Yasuo , Yuba Eiji , Harada Atsushi , Haino Takeharu , Kono Kenji
Published: January 2015

Well-defined supramolecular nanocomposites with biofunctions were facilely fabricated through complexation of carboxyfullerenes with poly(ethylene glycol)-modified poly(amidoamine) dendrimers.
Two- and three-photon absorption and excitation phosphorescence of oligofluorene-substituted Ir(ppy)3
Authors: Fan Yuanpeng , Ding Duanchen , Zhao Dahui
Published: January 2015

A series of oligofluorene-substituted Ir(ppy)3 complexes with remarkable 2PA and 3PA as well as two- and three-photon excited phosphorescence properties are reported.
Extended π-conjugated ruthenium zinc–porphyrin complexes with enhanced nonlinear-optical properties
Authors: de Torres Miriam , Semin Sergey , Razdolski Ilya , Xu Jialiang , Elemans Johannes A. A. W. , Rasing Theo , Rowan Alan E. , Nolte Roeland J. M.
Published: January 2015

Zinc porphyrin dimers and trimers, in which the porphyrins are connected via a ruthenium metal core, exhibit large third-order nonlinear optical absorption coefficients and refractive indices.
Reaction of cyclopropenes with a trichloromethyl radical: unprecedented ring-opening reaction of cyclopropanes with migration
Authors: Ueda Masafumi , Doi Nobuyoshi , Miyagawa Hitoki , Sugita Shoichi , Takeda Norihiko , Shinada Tetsuro , Miyata Okiko
Published: January 2015

The triethylborane-mediated direct addition of chloroform to cyclopropenes afforded trichloromethylcyclopropanes. In contrast, the use of dimethylzinc gave the unconjugated dieneviaring-opening reactions.
Oxygen adsorption-induced surface segregation of titanium oxide by activation in carbon nanofibers for maximizing photocatalytic performance
Authors: Lee Sung-In , Jo Seong-Mu , Joh Han-Ik , Lee Myong-Hoon , Lee Sungho
Published: January 2015

This research demonstrates a simple method for synthesizing titanium dioxide nanoparticle-decorated carbon nanofibers.
Solvent induced single-crystal to single-crystal structural transformation and concomitant transmetalation in a 3D cationic Zn(ii)-framework
Authors: Sen Susan , Neogi Subhadip , Rissanen Kari , Bharadwaj Parimal K.
Published: January 2015

Guest solvent triggered reversible structural transformation and concomitant Zn(ii) to Cu(ii) transmetalation has been realized through single-crystal to single-crystal fashion in an imidazolium functionalized 3D cationic Zn(ii)-framework.
Correction: Myoglobin-catalyzed intermolecular carbene N–H insertion with arylamine substrates
Authors: Sreenilayam Gopeekrishnan , Fasan Rudi
Published: January 2015

Correction for ‘Myoglobin-catalyzed intermolecular carbene N–H insertion with arylamine substrates’ by Gopeekrishnan Sreenilayam et al., Chem. Commun., 2015, DOI: 10.1039/c4cc08753d.
Enhanced features of Li2CO3 sputtered thin films induced by thickness and annealing time
Authors: Rojo Lander , Castro-Hurtado Irene , Morant-Miñana Maria C. , Mandayo Gemma G. , Castaño Enrique
Published: January 2015

Li2CO3 sputtered films of 300 nm have been subjected to physical and electrochemical characterization methods to analyze the influence of annealing treatments at 600 °C for 2 h, 6 h, 12 h and 18 h on the microstructure, surface and conductivity.
Structural diversities and magnetic properties of azide-containing coordination polymers based on flexible tetra-pyridinate ligands
Authors: Yu Fan , Xiang Mi , Li Ai-hua , Zhang Yu-min , Li Bao
Published: January 2015

By utilizing two quadritopic ligands, four new azido-containing coordination polymers have been synthesized and structurally characterized.
A structure–activity relationship study of the toxicity of ionic liquids using an adapted Ferreira–Kiralj hydrophobicity parameter
Authors: Melo Eduardo Borges de
Published: January 2015

An alternative molecular descriptor for characterizing the hydrophobicity of ionic liquids, WcAdap, is presented in this study.
Electrochemical oxidation stability of anions for modern battery electrolytes: a CBS and DFT study
Authors: Jónsson Erlendur , Johansson Patrik
Published: January 2015

The electrochemical stability vs. oxidation is a crucial property of anions in order to be suitable as components in lithium-ion batteries.
Edge-to-edge interaction between carbon nanotube–pyrene complexes and electrodes for biosensing and electrocatalytic applications
Authors: Walgama Charuksha , Means Nicolas , Materer Nicholas F. , Krishnan Sadagopan
Published: January 2015

Edge-to-edge interaction between carbon nanotubes and edge plane electrodes is suggested to favor enhanced π–π stacking of a pyrenyl compound and subsequent high density redox active protein immobilization.
Fluorescence imaging of metal ions implicated in diseases
Authors: Qian Xuhong , Xu Zhaochao
Published: January 2015

This highlight discusses recent advances in fluorescent imaging of metal ions for understanding the role of metals in related diseases.
Glyconanosynthons as powerful scaffolds and building blocks for the rapid construction of multifaceted, dense and chiral dendrimers
Authors: Roy René , Shiao Tze Chieh
Published: January 2015

The arsenal of available carbohydrates can be manipulated to provide versatile building blocks toward the syntheses of complex and chiral dendrimers.
A redox-stable chromate cathode decorated with in situ grown nickel nanocatalyst for efficient carbon dioxide electrolysis
Authors: Ruan Cong , Xie Kui
Published: January 2015

Ni nanoparticles are anchored on the surface of a chromate substrate by in situ growth, and significantly improve its performance for high-temperature CO2 electrolysis.
Non-mercury catalytic acetylene hydrochlorination over bimetallic Au–Ba(ii)/AC catalysts
Authors: Zhang Haiyang , Li Wei , Li Xueqin , Zhao Wei , Gu Junjie , Qi Xueyan , Dong Yanzhao , Dai Bin , Zhang Jinli
Published: January 2015

Ba(ii) additives well disperse and inhibit the reduction of Au, and strengthen the reactants adsorption, improving the catalysts' catalytic performance.
Combination of gold and iridium catalysts for the synthesis of N-alkylated amides from nitriles and alcohols
Authors: Li Feng , Ma Juan , Lu Lei , Bao Xiaofeng , Tang Wanying
Published: January 2015

An alternative and efficient approach for the synthesis of N-alkylated amides from nitriles and alcohols was proposed and accomplished.
Palladium nanoparticles confined in thiol-functionalized ordered mesoporous silica for more stable Heck and Suzuki catalysts
Authors: Oliveira Rafael L. , He Wuliyasu , Klein Gebbink Robertus J. M. , de Jong Krijn P.
Published: January 2015

The influence of confinement of Pd nanoparticles on thiol functionalized silica structures (modified MCF, SBA-15, plugged SBA-15 and Aerosil) was explored for the Heck and the Suzuki reactions.
First iron and cobalt(ii) hexabromoclathrochelates: structural, magnetic, redox, and electrocatalytic behavior
Authors: Dolganov Alexander V. , Belov Alexander S. , Novikov Valentin V. , Vologzhanina Anna V. , Romanenko Galina V. , Budnikova Yulia G. , Zelinskii Genrikh E. , Buzin Michail I. , Voloshin Yan Z.
Published: January 2015

Template condensation of dibromoglyoxime with n-butylboronic acid on a metal ion as a matrix afforded the first iron and cobalt(ii) hexabromoclathrochelates.
Improved antiparasitic activity by incorporation of organosilane entities into half-sandwich ruthenium(ii) and rhodium(iii) thiosemicarbazone complexes
Authors: Adams Muneebah , de Kock Carmen , Smith Peter J. , Land Kirkwood M. , Liu Nicole , Hopper Melissa , Hsiao Allyson , Burgoyne Andrew R. , Stringer Tameryn , Meyer Mervin , Wiesner Lubbe , Chibale Kelly , Smith Gregory S.
Published: January 2015

Ferrocenyl- and aryl-functionalised organosilane thiosemicarbazones.
Understanding the rate-dependent J–V hysteresis, slow time component, and aging in CH3NH3PbI3 perovskite solar cells: the role of a compensated electric field
Authors: Tress W. , Marinova N. , Moehl T. , Zakeeruddin S. M. , Nazeeruddin Mohammad Khaja , Grätzel M.
Published: January 2015

Ionic displacement modifying the electric field in the device is found as most likely reason for the hysteresis which is examined by separating fast and slow processes and comparing devices with and without blocking layer.
Inactivation mechanisms of cryptosporidium parvum oocysts by solar ultraviolet irradiation
Authors: Liu Yuanyuan , Dong Shengkun , Kuhlenschmidt Mark S. , Kuhlenschmidt Theresa B. , Drnevich Jenny , Nguyen Thanh H.
Published: January 2015

Direct inactivation ofCryptosporidium parvumoocysts by UVB component of sunlight is correlated with UV fluence.
Hypoglycemic and hypolipidemic effects of neohesperidin derived from Citrus aurantium L. in diabetic KK-Aymice
Authors: Jia Sheng , Hu Ying , Zhang Wenna , Zhao Xiaoyong , Chen Yanhong , Sun Chongde , Li Xian , Chen Kunsong
Published: January 2015

The present study is to investigate the possible hypoglycemic and hypolipidemic effects of neohesperidin (NHP) derived fromCitrus aurantiumL.in vivo.
Transition-metal-functionalized ordered mesoporous silicas: an overview of sustainable chiral catalysts for enantioselective transformations
Authors: Cheng Tanyu , Zhao Qiankun , Zhang Dacheng , Liu Guohua
Published: January 2015

This review focuses on the development of ordered mesoporous silica-supported chiral transition-metal-based catalysts for enantioselective transformations.
XAFS spectroscopy by an X-ray tube based spectrometer using a novel type of HOPG mosaic crystal and optimized image processing
Authors: Schlesiger C. , Anklamm L. , Stiel H. , Malzer W. , Kanngießer B.
Published: January 2015

This paper presents a XAFS laboratory spectrometer with optimized image treatment suitable for determination of bond lengths and chemical species.
Combined neutron and laser techniques for technological and compositional investigations of hollow bronze figurines
Authors: Agresti Juri , Osticioli Iacopo , Guidotti Maria Cristina , Capriotti Giuseppina , Kardjilov Nikolay , Scherillo Antonella , Siano Salvatore
Published: January 2015

Neutron tomography (NT), time of flight neutron diffraction (TOF-ND) and laser induced plasma spectroscopy (LIPS) were combined in the archaeometallurgical study of hollow bronze figurines.
A convection-driven long-range linear gradient generator with dynamic control
Authors: Wang Hao , Chen Chia-Hung , Xiang Zhuolin , Wang Ming , Lee Chengkuo
Published: January 2015

We developed a novel gradient generator to achieve long range and linear chemical gradients with a dynamic control function.
Chemical space is big. Really big
Authors: Lowe Derek
Published: January 2015

You think it's a long way to the back of your screening libraries? That's peanuts to chemical space, says Derek Lowe.
N-cadherin-mediated cell adhesion is regulated by extracellular Zn2+
Authors: Heiliger E. , Osmanagic A. , Haase H. , Golenhofen N. , Grabrucker A. M. , Weth A. , Baumgartner W.
Published: January 2015

Free extracellular zinc binds to N-cadherin and can modulate cellular adhesion in the nervous system at picomolar zinc concentrations.
A new fluorescent “turn-on” chemodosimeter for cyanide based on dual reversible and irreversible deprotonation of NH and CH groups
Authors: Zhang Chuanxiu , Liu Chuanxiang , Li Baiyun , Chen Jinju , Zhang Hua , Hu Zhou , Yi Fengping
Published: January 2015

A new chemodosimeter for cyanide ions based on dual deprotonation of NH and CH groups was developed for the first time, with high selectivity, dramatic red-shifted absorption (≈263 nm) and fluorescent “turn-on” detection.
Proteasome inhibition and cytostatic effects on human cancer cells by pyrazolone-enamines: a combined crystallographic, structural and computational study
Authors: Yan Xingchen , Xu Jiakun , Wu Xiaojing , Zhang Zhongyu , Zhang Xia , Fan Yuhua , Bi Caifeng
Published: January 2015

Interactions are possibly through hydrogen bonding of the pyrazolone ring and the hydroxyl, or the intercalation of conjugated plane.
Self-assembling amphiphilic Janus dendrimers: mesomorphic properties and aggregation in water
Authors: Fedeli Elisabetta , Lancelot Alexandre , Serrano José Luis , Calvo Pilar , Sierra Teresa
Published: January 2015

The hydrophobic/hydrophilic balance in amphiphilic Janus dendrimers tunes their self-assembly in bulk and in water.
Scribable multi-walled carbon nanotube-silicon nanocomposites: a viable lithium-ion battery system
Authors: Epur Rigved , Ramanathan Madhumati , Datta Moni K. , Hong Dae Ho , Jampani Prashanth H. , Gattu Bharat , Kumta Prashant N.
Published: January 2015

A novel electrode fabrication technique involving a manual scribing action of vertically aligned silicon coated multiwall carbon nanotubes (VASCNTs) on a copper foil have been developed as a viable approach to Li-ion battery electrodes.
Bipyridine hydrogel for selective and visible detection and absorption of Cd2+
Authors: Miao Qingqing , Wu Ziye , Hai Zijuan , Tao Changlu , Yuan Qingpan , Gong Yadi , Guan Yafeng , Jiang Jun , Liang Gaolin
Published: January 2015

A bipyridine-based hydrogel was developed for selective and visible detection and absorption of Cd2+.
Galactose-functionalized multi-responsive nanogels for hepatoma-targeted drug delivery
Authors: Lou Shaofeng , Gao Shan , Wang Weiwei , Zhang Mingming , Zhang Ju , Wang Chun , Li Chen , Kong Deling , Zhao Qiang
Published: January 2015

Preparation of galactose-functionalized, core crosslinked, and hepatoma-targeted multi-responsive nanogels for antitumor drug controlled release.
Facile fabrication of wafer-scale MoS2 neat films with enhanced third-order nonlinear optical performance
Authors: Zhang Xiaoyan , Zhang Saifeng , Chang Chunxia , Feng Yanyan , Li Yuanxin , Dong Ningning , Wang Kangpeng , Zhang Long , Blau Werner J. , Wang Jun
Published: January 2015

Wafer-scale neat MoS2 optical thin films were fabricated successfully, and they show a superior broadband ultrafast saturable absorption performance.
Molecular motion of donor–acceptor catenanes in water
Authors: Cougnon Fabien B. L. , Ponnuswamy Nandhini , Pantoş G. Dan , Sanders Jeremy K. M.
Published: January 2015

In this article, we use 1H NMR spectroscopy to study the spontaneous molecular motion of donor–acceptor [2]catenanes in water.
Byproduct promoted regioselective sulfenylation of indoles with sulfinic acids
Authors: Liu Cong-Rong , Ding Liang-Hui
Published: January 2015

An unprecedented method to synthesise 3-sulfenylindoles is demonstrated via byproduct promoted sulfenylation of indoles with sulfinic acids.
Polyurethane-coated silica particles with broad-spectrum antibacterial properties
Authors: Xu Qingxing , Sardon Haritz , Chan Julian M. W. , Hedrick James L. , Yang Yi Yan
Published: January 2015

Antibacterial polyurethane-coated silica particles were synthesized using a “grafting to” approach via surface-to-end-group and surface-to-backbone strategies.
Exploring the benefits of β-allyl sulfones for more homogeneous dimethacrylate photopolymer networks
Authors: Gorsche Christian , Koch Thomas , Moszner Norbert , Liska Robert
Published: January 2015

Difunctional β-allyl sulfones (DAS) are potent AFCT reagents for dimethacrylate photopolymer networks. Resultant materials show reduced shrinkage stress, higher storage modulus, and increased toughness.
Anion conducting multiblock poly(arylene ether sulfone)s containing hydrophilic segments densely functionalized with quaternary ammonium groups
Authors: Weiber Eva Annika , Meis David , Jannasch Patric
Published: January 2015

The use of methylhydroquinones enables the preparation of block copolymers having phenylene rings with precisely 2, 3 or 4 quaternary ammonium groups. Membrane properties show the importance of controlling the local ionic distribution to reach high anion conductivity.
Tuning multiple arms for camptothecin and folate conjugations on star-shaped copolymers to enhance glutathione-mediated intracellular drug delivery
Authors: Zhang Yun , Chen Maohua , Luo Xiaoming , Zhang Hong , Liu Chaoyu , Li Huiyan , Li Xiaohong
Published: January 2015

Multiarmed amphiphilic copolymers with drug conjugated were developed, and the composition and structure of the star-shaped miktoarms show significant effects on micelle behavior and antitumor activities.
Multifunctional ATRP based pH responsive polymeric nanoparticles for improved doxorubicin chemotherapy in breast cancer by proton sponge effect/endo-lysosomal escape
Authors: Lale Shantanu V. , Kumar Arun , Naz Farhat , Bharti Alok C. , Koul Veena
Published: January 2015

Folic acid and trastuzumab functionalized pH responsive polymeric nanoparticles for intracellular doxorubicin delivery in breast cancer.
Syndioselective ring-opening polymerization and copolymerization of trans-1,4-cyclohexadiene carbonate mediated by achiral metal- and organo-catalysts
Authors: Diallo Abdou Khadri , Kirillov Evgueni , Slawinski Martine , Brusson Jean-Michel , Guillaume Sophie M. , Carpentier Jean-François
Published: January 2015

A zinc or guanidine catalyst allows highly syndioselective ROP ofrac-CHDC, and its simultaneous or sequential copolymerization withrac-CHC andl-LA.
A double supramolecular crosslinked polymer gel exhibiting macroscale expansion and contraction behavior and multistimuli responsiveness
Authors: Ji Xiaofan , Jie Kecheng , Zimmerman Steven C. , Huang Feihe
Published: January 2015

Here we report a novel supramolecular polymer gel containing two types of physical crosslinks that are orthogonal to each other. It shows macroscale expansion and contraction behavior and multistimuli responsiveness.
Preparation and properties of magnetic Fe3O4/poly(pyrimidine-amide) nanocomposites: selective polyamidation of a bis(amino-pyrimidine-diol) compound in an ionic liquid
Authors: Taghavi Mehdi , Alizadeh Raouf , Ghaemy Mousa
Published: January 2015

This work reports the preparation of magnetic nanocomposite poly(pyrimidine-amide) (MNCPPA)s from interfacial reaction between multifunctional poly(pyrimidine-amide)s (PPAs) and epoxide functionalized magnetic Fe3O4 nanoparticles.
Evolution of tubular copper sulfide nanostructures from copper(i)–metal organic precursor: a superior platform for the removal of Hg(ii) and Pb(ii) ions
Authors: Ray Chaiti , Sarkar Sougata , Dutta Soumen , Roy Anindita , Sahoo Ramkrishna , Negishi Yuichi , Pal Tarasankar
Published: January 2015

Room temperature synthesized porous mixed phase copper sulfide acts as an effective adsorbent for the removal of heavy metal ions from water.
Tuned magnetism–luminescence bifunctionality simultaneously assembled into flexible Janus nanofiber
Authors: Bi Fei , Dong Xiangting , Wang Jinxian , Liu Guixia
Published: January 2015

A new structure of [CoFe2O4/PVP]//[YAG:5%Eu3+/PVP] magnetic–luminescent bifunctional Janus nanofibers, which possess superior magnetic and luminescent properties due to their special nanostructure, has been successfully fabricated.
A novel hydrothermal synthesis and characterisation of porous Mn3O4 for supercapacitors with high rate capability
Authors: Yang Fengyu , Zhao Minshou , Sun Qujiang , Qiao Yuqing
Published: January 2015

Porous nanostructured Mn3O4 particles were successfully synthesized by a novel hydrothermal method via adding the surfactant hexadecyltrimethylammonium bromide (CTAB) and exhibit good rate capability.
In situ microfluidic fabrication of multi-shape inorganic/organic hybrid particles with controllable surface texture and porous internal structure
Authors: Tang Guannan , Li Wenxiu , Cao Xiaodong , Dong Hua
Published: January 2015

In this study, multiple-shape like spherical, ellipsoidal, disk-like, and rod-like inorganic/organic hybrid particles with controllable surface texture and porous internal structure are fabricated using droplet-based microfluidics.
A green technique to prepare uniform amine capped multi-walled carbon nanotubes to fabricate high strength, protein resistant polymer nanocomposites
Authors: Das Tanya , Roy Sunanda , Ting Sun , Zhang Liying , Li Yongmei , Yue Chee Yoon , Hu Xiao
Published: January 2015

Efficient amine grafting on MWCNTs by double UV-ozone induced grafting, and its role in biomaterials.
A dual-functional Cd(ii)–organic-framework demonstrating selective sensing of Zn2+ and Fe3+ ions exclusively and size-selective catalysis towards cyanosilylation
Authors: Zhang Xiao-Nan , Liu Lin , Han Zheng-Bo , Gao Ming-Liang , Yuan Da-Qiang
Published: January 2015

A dual-functional metal–organic-framework can selectively sense Zn2+ and Fe3+ ions over mixed metal ions and displays size-selective catalysis towards cyanosilylation of aldehydes.
Controllable synthesis of uniform CaMoO4:Eu3+,M+ (M = Li, Na, K) microspheres and optimum luminescence properties
Authors: Liu Xiaoguang , Li Ling , Noh Hyeon Mi , Jeong Jung Hyun , Jang Kiwan , Shin Dong Soo
Published: January 2015

High-quality and monodisperse CaMoO4:Eu3+,M+ (M = Li, Na, K) microspheres have been synthesized with the assistance of poly-(diallyldimethylammonium chloride) (PDDA) via a facile coprecipitation hydrothermal route.
Electrochemical performance improvement of N-doped graphene as electrode materials for supercapacitors by optimizing the functional groups
Authors: Li Wei , Lü Hong-Yan , Wu Xing-Long , Guan Hongyu , Wang Ying-Ying , Wan Fang , Wang Guang , Yan Li-Qun , Xie Hai-Ming , Wang Rong-Shun
Published: January 2015

The electrochemical properties of doped graphene as electrode materials for supercapacitors can be significantly enhanced by optimizing the surface nitrogen functional groups.
Controlled inversion and surface disorder in zinc ferrite nanocrystallites and their effects on magnetic properties
Authors: Sai Ranajit , Kulkarni Suresh D. , Bhat Swetha S. M. , Sundaram Nalini G. , Bhat Navakanta , Shivashankar S. A.
Published: January 2015

A potentially useful strategy for tuning the inversion parameter in spinel nanoferrites – and thus their magnetic characteristics – is demonstrated.
Making silicon solar cells in a green, low-hazardous, and inexpensive way
Authors: Hwang Jih-Shang , Wu Chien-Yi , Tai Ya-Hsien , Tseng Peng , Chattopadhyay Surojit , Chiu Yen-Chieh , Chen Shi-Wei
Published: January 2015

A facile, green, HF-free process for fabricating silicon solar cells safely at home or in school is presented.
Micellar solution with pH responsive viscoelasticity and colour switching property
Authors: Linet Rose J. , Tata B. V. R. , Talmon Yeshayahu , Aswal V. K. , Hassan P. A. , Sreejith Lisa
Published: January 2015

Macroscopic properties of amphiphilic systems can be reversibly controlled by tailoring micellar morphology via appropriate choice of additive and external stimulus.
Thiol treatment to enhance photoluminescence and electroluminescence of CdSe/CdS core–shell quantum dots prepared by thermal cycling of single source precursors
Authors: Chen Chih-Jung , Chiang Ray-Kuang , Huang Chun-Yuan , Lien Jiun-Yi , Wang Sue-Lein
Published: January 2015

Thiol treatment to enhance photoluminescence and electroluminescence of CdSe/CdS core–shell quantum dots prepared by thermal cycling of a single source precursor.
One pot microwave-assisted synthesis of Ag decorated yolk@shell structured TiO2 microspheres
Authors: Yang Yong , Wang Guozhong , Gu Gang , Li Qian , Kang Shenghong , Zhang Yunxia , Ng Dickon H. L. , Zhao Huijun
Published: January 2015

A facile and extremely fast one-pot microwave-assisted synthesis of Ag decorated yolk@shell structured TiO2 microspheres was reported.
Fluorescence probing of metal-ion-mediated hybridization of oligonucleotides
Authors: Taherpour Sharmin , Lönnberg Tuomas
Published: January 2015

The structure-dependent fluorescence of pyrrolocytosine has been harnessed to quantify the affinity of metal-ion-chelating oligonucleotides for their native counterparts.
On the HOMA index of some acyclic and conducting systems
Authors: Dobrowolski Jan Cz. , Ostrowski Sławomir
Published: January 2015

The HOMA index can be useful for acyclic linear systems and design of new conducting polymers.
Influence of alkoxy tail length on the phase behaviors of side-chain liquid crystalline polymers without the spacer
Authors: Ni Bin , Liao Junqiu , Chen Sheng , Zhang Hai-liang
Published: January 2015

The alkoxy tail plays an important role in the phase behavior of the SCLCPs based on biphenyl mesogen without the spacer.
Sulphuric acid immobilized on silica gel (H2SO4–SiO2) as an eco-friendly catalyst for transamidation
Authors: Rasheed Sk. , Rao D. Nageswar , Reddy A. Siva , Shankar Ravi , Das Parthasarathi
Published: January 2015

A novel method of transamidation of carboxamides with amines using catalytic amounts of H2SO4–SiO2 under solvent-free conditions has been developed. The scope of the methodology has been demonstrated with primary and secondary amines.
Correction: Video reports as a novel alternate assessment in the undergraduate chemistry laboratory
Authors: Erdmann Mitzy A. , March Joe L.
Published: January 2015

Correction for ‘Video reports as a novel alternate assessment in the undergraduate chemistry laboratory’ by Mitzy A. Erdmann and Joe L. March, Chem. Educ. Res. Pract., 2014, 15, 650–657.
Confinement without boundaries: anisotropic diffusion on the surface of a cylinder
Authors: Kusters Remy , Paquay Stefan , Storm Cornelis
Published: January 2015

In 2D systems, at sufficiently high surface coverage, diffusive motion is strongly affected by physical confinement. We explore this confinement by geometry on the diffusion of particles confined to the surface of a cylinder. We find that the magnitude and the directionality of lateral diffusion is strongly influenced by its radius and show that this effect is caused by screw-like packings on the surface of the cylinder.
Analysis of carrier sense multiple access protocols for channels supporting multi‐packet reception
Authors: Indira Balan Arun , Tiruchirai Gopalakrishnan Venkatesh
Published: January 2015

Exact throughput analysis of unslotted carrier sense multiple access (CSMA) protocols for channels supporting multi‐packet reception (MPR) is carried out. The protocols considered include (i) non‐persistent and (ii) 1‐persistent CSMA. An adaptive non‐persistent CSMA protocol for channels supporting MPR has been proposed and evaluated. A Markov chain model with states representing the transmission period of the 1‐persistent CSMA is used in the analysis. Analytical results are validated using simulation. The authors show that for CSMA protocols supporting MPR the throughput is crucially dependent on the carrier sensing delay.
Reconstruct unrecoverable data in real‐time networks using Bézier curve
Authors: Nugroho Dwi Agung , Rizal Syamsul , Kim Dong‐Seong
Published: January 2015

This study proposes a method to handle unrecoverable data using a formula called Bézier curve. The proposed method suggests the possibility to approximate the damaged data, which have been processed by the error correction scheme. The proposed method works on the real‐time distributed system which retransmission is considered as unsuitable solution to manage the overall networked system. By using the Bézier curve, the transmitted unrecoverable data are reconstructed again by using the functional approximation. This method provides a smoothing effect on damaged data that usually are normalised on real‐time transmission of PROFIBUS. Three differences Bézier curve methods are compared in PROFIBUS data, four‐points (FP) method, two‐points two‐degrees method and four‐degrees (FD) method. Simulation results show that all three Bézier curve methods can approximate data in PROFIBUS. FD has higher computation complexity compared with others. However, FD compensates with its data size which is only half of FP method.
Fast analysis of three‐dimensional electromagnetic problems using dual‐primal finite‐element tearing and interconnecting method combined with ℋ‐matrix technique
Authors: Wan Ting , Zhang Qingwen , Hong Tao , Fan Zhenhong , Ding Dazhi , Chen Ru Shan
Published: January 2015

As a powerful variant of the dual‐primal finite‐element tearing and interconnecting (FETI‐DP) method in electromagnetics (EM), the FETI‐DPEM method shows excellent convergence properties and numerical scalability. A key factor affecting the performance of the FETI‐DPEM is the direct solution of sub‐domain FE systems. An efficient direct solver based on hierarchical (ℋ‐) matrix technique is proposed to solve the sub‐domain FE systems. ℋ‐matrix formatted lower‐upper (LU) decomposition with subsequent forward and backward substitution (FBS) can significantly reduce the computational costs of the direct solution with sufficient accuracy. The nested dissection technique is employed to further accelerate the ℋ‐LU decomposition and the ℋ‐FBS. Numerical examples demonstrate that the proposed method is very robust for the three‐dimensional EM simulation.
An eco-hydrological assessment method for temporary rivers. The Celone and Salsola rivers case study (SE, Italy)
Authors: De Girolamo Anna Maria , Gallart Francesc , Pappagallo Giuseppe , Santese Gerardina , Porto Antonio Lo
Published: January 2015

This paper presents the results of a study which characterizes the hydrological regime of a temporary river at reach scale and analyzes the hydrological alterations due to anthropogenic pressures using the SWAT model to estimate the daily streamflows and the periods without flow which would occur in natural conditions. The study area is the Salsola and Celone river basins, located in SE Italy. In a first part, we identified six classes of flow, the so-calledAquatic States(ASs), which play a major role in determining the available mesohabitats and subsequently the characteristics of the aquatic life. The monthly occurrence of the differentASsover a long period has been evaluated in order to provide useful information to design biological samplings. The results show thatdrybed conditions can occur from May to January andarheic statefrom April to January in the reaches located in the upper part of the basin. The impacted river reaches showed a different behavior depending on the anthropogenic impacts. In a second part, two indicators based on the statistics of the periods without flows were used, monthly flow permanence and dry season predictability, for describing the flow regime components which may have been altered by anthropogenic pressures. The indexes, which were computed in impacted and natural conditions, were used as coordinates in a plot to obtain a graphical vision of the regimes. The distance between the points representing the actual (impacted) and natural states in the plot were used to classify the hydrological alterations.
Interface-structure of the Si/SiC heterojunction grown on 6H-SiC
Authors: Li L. B. , Chen Z. M. , Zang Y.
Published: January 2015

The Si/SiC heterojunctions were prepared on 6H-SiC (0001) C-face by low-pressure chemical vapour deposition at 850 ∼ 1050 °C. Transmission electron microscopy and selected area electron diffraction were employed to investigate the interface-structure of Si/SiC heterojunctions. The Si/6H-SiC heterostructure of large lattice-mismatch follows domain matching epitaxy mode, which releases most of the lattice-mismatch strain, and the coherent Si epilayers can be grown on 6H-SiC. Si(1-11)/6H-SiC(0001) heterostructure is obtained at 900 °C, and the in-plane orientation relationship of Si/6H-SiC heterostructure is (1–11)[1-1-2]Si//(0001)[-2110]6H-SiC. The Si(1-11)/6H-SiC(0001) interface has the same 4:5 Si-to-SiC matching mode with a residual lattice-mismatch of 0.26% along both the Si[1-1-2] and Si[110] orientations. When the growth temperature increases up to 1000 °C, the ⟨220⟩ preferential orientation of the Si film appears. SAED patterns at the Si/6H-SiC interface show that the in-plane orientation relationship is (-220)[001]Si//(0001)[2-1-10]6H-SiC. Along Si[110] orientation, the Si-to-SiC matching mode is still 4:5; along the vertical orientation Si[001], the Si-to-SiC mode change to approximate 1:2 and the residual mismatch is 1.84% correspondingly. The number of the atoms in one matching-period decreases with increasing residual lattice-mismatch in domain matching epitaxy and vice versa. The Si film grows epitaxially but with misfit dislocations at the interface between the Si film and the 6H-SiC substrate. And the misfit dislocation density of the Si(1-11)/6H-SiC(0001) and Si(-220)/6H-SiC(0001) obtained by experimental observations is as low as 0.487 × 1014 cm−2 and 1.217 × 1014 cm−2, respectively, which is much smaller than the theoretical calculation results.
Probing of quantum turbulence with the emitting vortex loops
Authors: Nemirovskii S. K.
Published: January 2015

The statistics of vortex loops emitted from the domain with quantum turbulence is studied. The investigation is performed on the supposition that the vortex loops have the Brownian or random walking structure with the generalized Wiener distribution. The main goal is to relate the properties of the emitted vortex loops with the parameters of quantum turbulence. The motivation of this work is connected with recent studies, both numerical and experimental, on study of emitted vortex loops. This technique opens up new opportunities to probe superfluid turbulence. We demonstrated how the statistics of emitted loops is expressed in terms of the vortex tangle parameters and performed the comparison with numerical simulations.
Dislocations and crowdions in two-dimensional crystals. I. Atomic-lattice models and a continuum description of these defects in elastic anisotropic 2D media
Authors: Natsik V. D. , Smirnov S. N.
Published: January 2015

A rigorous continuum description of dislocations and crowdions as intrinsic structural defects in two-dimensional (2D) crystals is proposed. The two types of defects are studied in a unified approach: a crystal is treated as a strictly 2D anisotropic elastic medium and the defects as point carriers of plastic deformation and singular sources of elastic deformation fields, with each having distinct crystal-geometric and topological properties. The continuum description is preceded by a discussion of simple atomic-lattice schemes illustrating the microscopic structure of these defects. The two types of defects are each assigned a plastic distortion tensor that matches their crystal-geometric characteristics. Based on a linear theory of the plasticity of 2D media, equations are derived for the distribution of the elastic fields around isolated defect centers, as well as for a continuous distribution of defects in a crystal. General solutions of these equations are found for fixed dislocations and crowdions in an infinitely extended elastic anisotropic 2D continuum.
Conformation and interactions of dopamine hydrochloride in solution
Authors: Callear Samantha K. , Johnston Andrew , McLain Sylvia E. , Imberti Silvia
Published: January 2015

The aqueous solution of dopamine hydrochloride has been investigated using neutron and X-ray total scattering data together with Monte-Carlo based modelling using Empirical Potential Structure Refinement. The conformation of the protonated dopamine molecule is presented and the results compared to the conformations found in crystal structures, dopamine-complexed protein crystal structures and predicted from theoretical calculations and pharmacophoric models. It is found that protonated dopamine adopts a range of conformations in solution, highlighting the low rotational energy barrier between different conformations, with the preferred conformation being trans-perpendicular. The interactions between each of the species present (protonated dopamine molecules, water molecules, and chloride anions) have been determined and are discussed with reference to interactions observed in similar systems both in the liquid and crystalline state, and predicted from theoretical calculations. The expected strong hydrogen bonds between the strong hydrogen bond donors and acceptors are observed, together with evidence of weaker CH hydrogen bonds and π interactions also playing a significant role in determining the arrangement of adjacent molecules.
Charge-flux qubit coupled to a tank circuit in a strong low-frequency electromagnetic field
Authors: Shnyrkov V. I. , Krech W. , Born D. , Serebrovsky V. V. , Turutanov O. G.
Published: January 2015

A superconducting charge-flux qubit coupled to a high-Q tank circuit was studied in a low-frequency electric field. A fine structure of the multiphoton resonance lines and quantum interference effects associated with the excitation of a quasi-two-level system due to the Landau–Zener–Stückelberg tunneling was observed. The results obtained for multiphoton resonant excitations and low-frequency oscillations of the average occupation of quantum levels were compared using different parameters of the measuring circuit. The mechanism responsible for the fine structure of resonance lines was considered. The method to measure the impedance arising in the tank circuit due to the oscillations of the superconducting current in the qubit and the main sources of decoherence were discussed.
Rapid thermal processing chamber for in-situ x-ray diffraction
Authors: Ahmad Md. Imteyaz , Van Campen Douglas G. , Fields Jeremy D. , Yu Jiafan , Pool Vanessa L. , Parilla Philip A. , Ginley David S. , Van Hest Maikel F. A. M. , Toney Michael F.
Published: January 2015

Rapid thermal processing (RTP) is widely used for processing a variety of materials, including electronics and photovoltaics. Presently, optimization of RTP is done primarily based on ex-situ studies. As a consequence, the precise reaction pathways and phase progression during the RTP remain unclear. More awareness of the reaction pathways would better enable process optimization and foster increased adoption of RTP, which offers numerous advantages for synthesis of a broad range of materials systems. To achieve this, we have designed and developed a RTP instrument that enables real-time collection of X-ray diffraction data with intervals as short as 100 ms, while heating with ramp rates up to 100 °Cs−1, and with a maximum operating temperature of 1200 °C. The system is portable and can be installed on a synchrotron beamline. The unique capabilities of this instrument are demonstrated with in-situ characterization of a Bi2O3-SiO2 glass frit obtained during heating with ramp rates 5 °C s−1 and 100 °C s−1, revealing numerous phase changes.
System for measuring temporal profiles of scintillation at high and different linear energy transfers by using pulsed ion beams
Authors: Koshimizu Masanori , Kurashima Satoshi , Taguchi Mitsumasa , Iwamatsu Kazuhiro , Kimura Atsushi , Asai Keisuke
Published: January 2015

We have developed a system for measuring the temporal profiles of scintillation at high linear energy transfer (LET) by using pulsed ion beams from a cyclotron. The half width at half maximum time resolution was estimated to be 1.5–2.2 ns, which we attributed mainly to the duration of the pulsed ion beam and timing jitter between the trigger signal and the arrival of the ion pulse. The temporal profiles of scintillation of BaF2 at different LETs were successfully observed. These results indicate that the proposed system is a powerful tool for analyzing the LET effects in temporal profiles of scintillation.
Dopant effects on 2-ethyl-1-hexanol: A dual-channel impedance spectroscopy and neutron scattering study
Authors: Singh Lokendra P. , Raihane Ahmed , Alba-Simionesco Christiane , Richert Ranko
Published: January 2015

A two-channel impedance technique has been used to study the relaxation behavior of 2-ethyl-1-hexanol with polar and non-polar dopants at the few percent concentration level over a wide temperature and frequency range. The non-polar dopants shift both the Debye and the primary structural relaxation time in the same direction, to shorter times for 3-methylpentane and to longer times for squalane, consistent with the relative glass transition temperatures (Tg) of the components. By contrast, polar dopants such as water or methanol modify the α-process towards slower dynamics and increased amplitude, while the Debye process is accelerated and with a decreased amplitude. This effect of adding water to alcohol is explained by water promoting more compact structures with reduced Kirkwood correlation factors. This picture is consistent with a shift in the neutron scattering pre-peak to lower scattering vectors and with simulation work on alcohol-water systems.
Communication: Fast transport and relaxation of vibrational energy in polymer chains
Authors: Kurnosov Arkady A. , Rubtsov Igor V. , Burin Alexander L.
Published: January 2015

We investigate ballistic vibrational energy transport through optical phonon band in oligomeric chains in the presence of decoherence. An exact solution is obtained for the excitation density in the space-time representation in the continuous limit and this solution is used to characterize the energy transport time and intensity. Three transport mechanisms are identified such as ballistic, diffusive, and directed diffusive regimes, occurring at different distances and time scales. The crossover between the two diffusive regimes is continuous, while the switch between the ballistic and diffusive mechanisms occurs in a discontinuous manner in accord with the recent experimental results on energy transport in perfluoroalkanes.
Particle manipulation by a non-resonant acoustic levitator
Authors: Andrade Marco A. B. , Pérez Nicolás , Adamowski Julio C.
Published: January 2015

We present the analysis of a non-resonant acoustic levitator, formed by an ultrasonic transducer and a concave reflector. In contrast to traditional levitators, the geometry presented herein does not require the separation distance between the transducer and the reflector to be a multiple of half wavelength. The levitator behavior is numerically predicted by applying a numerical model to calculate the acoustic pressure distribution and the Gor'kov theory to obtain the potential of the acoustic radiation force that acts on a levitated particle. We also demonstrate that levitating particles can be manipulated by controlling the reflector position while maintaining the transducer in a fixed position.
Effects of Ga substitution on the structural and magnetic properties of half metallic Fe2MnSi Heusler compound
Authors: Pedro S. S. , Caraballo Vivas R. J. , Andrade V. M. , Cruz C. , Paixão L. S. , Contreras C. , Costa-Soares T. , Caldeira L. , Coelho A. A. , Carvalho A. Magnus G. , Rocco D. L. , Reis M. S.
Published: January 2015

The so-called half-metallic magnets have been proposed as good candidates for spintronic applications due to the feature of exhibiting a hundred percent spin polarization at the Fermi level. Such materials follow the Slater-Pauling rule, which relates the magnetic moment with the valence electrons in the system. In this paper, we study the bulk polycrystalline half-metallic Fe2MnSi Heusler compound replacing Si by Ga to determine how the Ga addition changes the magnetic, the structural, and the half-metal properties of this compound. The material does not follow the Slater-Pauling rule, probably due to a minor structural disorder degree in the system, but a linear dependence on the magnetic transition temperature with the valence electron number points to the half-metallic behavior of this compound.
Launching focused surface plasmon in circular metallic grating
Authors: Kumar Pawan , Tripathi V. K. , Kumar Ashok , Shao X.
Published: January 2015

The excitation of focused surface plasma wave (SPW) over a metal–vacuum interface embedded with circular surface grating is investigated theoretically. The normally impinged radiation imparts oscillatory velocity to free electrons that beats with the surface ripple to produce a nonlinear current, driving the SPW. As SPW propagates, it gets focused. The focused radiation has a maximum at the centre of grating and decreases beyond the centre due to diffraction. The amplitude of SPW is fixed for a given groove depth and increases rapidly around the resonance frequency. The intensity at the focus point depends on dimensions of the grating. It increases with the radiation frequency approaching the surface plasmon resonance. The scheme has potential applications for photonic devices and surface enhanced Raman scattering.
Enhancement of interface anchoring and densification of Y2O3 coating by metal substrate manipulation in aerosol deposition process
Authors: Kim Jinwoo , Lee Je In , Park Dong Soo , Park Eun Soo
Published: January 2015

The interface anchoring and densification of Y2O3 coatings prepared by aerosol deposition (AD) process were systematically investigated for various types of metal substrates. At initial anchoring stage in AD process, the kinetic energy of impacted particles is converted to the heat energy, which instantly elevates the interface temperature between coating layer and substrate. Thus, the Sn substrate with low melting temperature (∼505 K) results in strong impact anchoring by local interface melting during AD process. On the other hand, the continuous collision and fracture of impacted particles lead to solid consolidation and densification of deposited coating layers. Thus, the SUS substrate with high hardness (∼173 Hv) leads to a highly densified coating layer. Indeed, the bulk metallic glass (BMG) substrates, which have unique low processable temperature (<800 K) called supercooled liquid region and ultra-high hardness (>500 Hv), give rise to both excellent interface anchoring and densification of thick Y2O3 layers with a nano-crystalline structure by AD process. These advantages of the BMG substrates can be used more widely by forming metallic glass buffer layer on various substrates applied to AD process.