bluuebunny/crossref_metadata_2025 huggingface dataset:
Hydrogen or batteries for grid storage? A net energy analysis
Authors: Pellow Matthew A. , Emmott Christopher J. M. , Barnhart Charles J. , Benson Sally M.
Published: April 2015

Storing electrical energy in hydrogen requires less manufacturing energy than batteries, per unit of energy dispatched over the system's lifetime.
Methyl-substituted enhancement of antitumor activity in square-planar metal complex and analysis of ΔE, ΔG, CV, UV-vis and luminescence
Authors: Zhang WeiChuan , Lu Xiaoming , Wang Guo , Cheng Yifeng , Zhang Bo
Published: April 2015

In anticancer experiments, complex2exhibits the highest inhibitions from the data of IC50. We ascertain the structure by using X-ray diffraction and analysis of UV-vis, luminescence, cyclic voltammetry, ΔEand ΔG.
The structural and electronic impact on the photophysical and biological properties of a series of CuI and AgI complexes with triphenylphosphine and pyrimidine-type thiones
Authors: Papanikolaou Panagiotis A. , Papadopoulos Anastasios G. , Andreadou Eleni G. , Hatzidimitriou Antonios , Cox Philip J. , Pantazaki Anastasia A. , Aslanidis Paraskevas
Published: April 2015

A controllable S,P-coordination environment resulting in selective structural, emissive and antibacterial properties.
BaTiO3–graphene nanocomposites: synthesis and visible light photocatalytic activity
Authors: Wang Rui-Xia , Zhu Qing , Wang Wan-Sheng , Fan Cong-Min , Xu An-Wu
Published: April 2015

The new role of graphene as a macromolecular photosensitizer transforms the wide band gap BaTiO3 to have visible light photoactivity.
Hybrid composites: amalgamation of proteins with polymeric phenols as a multifunctional material for leather processing
Authors: Ramalingam Sathya , Janardhanan Sreeram Kalarical , Raghava Rao Jonnalagadda , Unni Nair Balachandran
Published: April 2015

In this work, blending various protein wastes has resulted in the development of new hybrid composites, which display innovative functionalities with superior physico-chemical properties.
Cytotoxicity, genotoxicity and alteration of cellular antioxidant enzymes in silver nanoparticles exposed CHO cells
Authors: Awasthi Kumud Kant , Awasthi Anjali , Verma Rajbala , Kumar Narender , Roy Partha , Awasthi Kamlendra , John P. J.
Published: April 2015

The broad applications of silver nanoparticles (Ag NPs) increase human exposure, thus potential risk associated with their toxicity; therefore, the toxicity of Ag NPs, synthesized by chemical route was studied using Chinese Hamster Ovary (CHO) cells.
Dynamic motion of an Lu pair inside a C76(Td) cage
Authors: Hao Juanyuan , Li Fengyu , Li Hongjiang , Chen Xiaoyu , Zhang Yuyan , Chen Zhongfang , Hao Ce
Published: April 2015

The dynamic motion of an Lu pair inside a C76(Td) cage was investigated by relativistic density functional theory (DFT).
Water-triggered spontaneous surface patterning in thin films of mexylaminotriazine molecular glasses
Authors: Melito Elizabeth , Laventure Audrey , Aldea-Nunzi Gabriela , Pellerin Christian , Buncel Erwin , Lebel Olivier , Nunzi Jean-Michel
Published: April 2015

Surface patterning that occurs spontaneously during the formation of a thin film is a powerful tool for controlling film morphology at the nanoscale level because it avoids the need for further processing.
Deep UV excited muscle cell autofluorescence varies with the fibre type
Authors: Chagnot Caroline , Vénien Annie , Peyrin Frédéric , Jamme Frédéric , Réfrégiers Matthieu , Desvaux Mickaël , Astruc Thierry
Published: April 2015

DUV autofluorescence microspectroscopy allows label free fibre typing in muscles.
Determination of pesticide residues in coconut tree trunks by modified QuEChERS method and ultra-high-performance liquid chromatography coupled to triple quadrupole tandem mass spectrometry
Authors: Ferreira J. A. , Talamine V. , Facco J. F. , Rizzetti T. M. , Ferreira J. M. S. , Oliveira F. A. , Prestes O. D. , Zanella R. , Martins M. L. , Adaime M. B. , Navickiene S. , Bottoli C. B. G.
Published: April 2015

Determination of pesticides in coconut tree trunks using modified QuEChERS and UHPLC-MS/MS.
On-column preconcentration in sequential injection chromatography: application to determination of parabens
Authors: Batista Alex D. , Rocha Fábio R. P.
Published: April 2015

High enrichment factors were achieved by retaining the analytes at the head of the column in sequential injection chromatography, without hindering resolution or retention times.
Site-selective characterization of Src homology 3 domain molecular recognition with cyanophenylalanine infrared probes
Authors: Horness Rachel E. , Basom Edward J. , Thielges Megan C.
Published: April 2015

We present site-selectiveCNPhe labeling combined with FT IR spectroscopy as a fast, minimally-perturbative, reproducible approach to characterize protein microenvironments.
A digital image-based method employing a spot-test for quantification of ethanol in drinks
Authors: Benedetti Luzia Pires dos Santos , dos Santos Vagner Bezerra , Silva Tiago Almeida , Filho Edemar Benedetti , Martins Valdomiro Lacerda , Fatibello-Filho Orlando
Published: April 2015

The digital image analysis together with spot-test based on a colorimetric assay produces a fast, low waste, screening andin situanalysis.
A fluorescent sensor based on ovalbumin-modified Au nanoclusters for sensitive detection of ascorbic acid
Authors: Li Yanxia , Chen Yiting , Huang Lu , Ma Liang , Lin Qi , Chen Guonan
Published: April 2015

In this paper, ovalbumin (OVA) stabilized gold nanoclusters (OVA-Au NCs) were used as sensing probes for ascorbic acid (AA) detection.
Sensitive and high-throughput bioanalysis of fluoxetine and nor-fluoxetine in rabbit and human plasma using SPE-LC-MS/MS
Authors: Prasad Yarra Durga , Chhonker Yashpal S. , Chandasana Hardik , Laxman Tulsankar Sachin , Bala Veenu , Kanojiya Sanjeev , Ghatak Sandeep , Bhatta Rabi S.
Published: April 2015

Fluoxetine is a commonly prescribed antidepressant agent in psychotherapy.
Automated growth of metal–organic framework coatings on flow-through functional supports
Authors: Maya F. , Palomino Cabello C. , Clavijo S. , Estela J. M. , Cerdà V. , Turnes Palomino G.
Published: April 2015

Metal–organic framework coatings on flow-through functional supports were prepared using automated flow-based techniques.
Cisplatin binding to human serum albumin: a structural study
Authors: Ferraro Giarita , Massai Lara , Messori Luigi , Merlino Antonello
Published: April 2015

The reaction between cisplatin and human serum albumin (HSA) was investigated by X-ray crystallography and crystal structures of the cisplatin/HSA adduct were eventually solved for the first time.
Sr7.3Ca2.7(PO4)6F2:Eu2+,Mn2+: a novel single-phased white light-emitting phosphor for NUV-LEDs
Authors: Ding Jianyan , Wu Quansheng , Li Yanyan , Long Qiang , Wang Chuang , Wang Yuhua
Published: April 2015

After co-doping Eu2+ and Mn2+ into SCPF, blue-yellow tunable colors were obtained including warm white light.
Discovery of a series of 2-(pyridinyl)pyrimidines as potent antagonists of GPR40
Authors: Waring Michael J. , Baker David J. , Bennett Stuart N. L. , Dossetter Alexander G. , Fenwick Mark , Garcia Rob , Georgsson Jennie , Groombridge Sam D. , Loxham Susan , MacFaul Philip A. , Maskill Katie G. , Morgan David , Morrell Jenny , Pointon Helen , Robb Graeme R. , Smith David M. , Stokes Stephen , Wilkinson Gary
Published: April 2015

A series of 2-(pyridinyl)pyrimidines were identified as potent GPR40 antagonists.
Design, synthesis of uniform Au nanoparticles modified Fe2O3–TiO2 coaxial nanotubes and their enhanced thermal stability and photocatalytic activity
Authors: An Huiqin , He Xiaoling , Li Jiaquan , Zhao Lizhi , Chang Cheng , Zhang Saihui , Huang Weiping
Published: April 2015

Au nanoparticles are loaded on Fe2O3/TiO2 nanotubes by a one-pot strategy using lysine as both a linker and a capping agent.
Preparation of palladium nanoparticles using Euphorbia thymifolia L. leaf extract and evaluation of catalytic activity in the ligand-free Stille and Hiyama cross-coupling reactions in water
Authors: Nasrollahzadeh Mahmoud , Sajadi S. Mohammad , Honarmand Ebrahim , Maham Mehdi
Published: April 2015

The yields of the reaction products were very high and no toxic organic solvents were needed in this method. The high efficiency of the catalyst remains unaltered even after five successive cycles.
Curvature in graphene nanoribbons generates temporally and spatially focused electric currents
Authors: Gomes da Rocha Claudia , Tuovinen Riku , van Leeuwen Robert , Koskinen Pekka
Published: April 2015

Today graphene nanoribbons and other graphene-based nanostructures can be synthesized with atomic precision.
Alkynylation of steroids via Pd-free Sonogashira coupling
Authors: Kotovshchikov Yury N. , Latyshev Gennadij V. , Lukashev Nikolay V. , Beletskaya Irina P.
Published: April 2015

A new biligand catalytic system was applied for the Pd-free Sonogashira syntheses of valuable steroidal enynes.
Kinetic resolution of primary allylic amines via palladium-catalyzed asymmetric allylic alkylation of malononitriles
Authors: Wang Yong , Xu Ya-Nan , Fang Guo-Sheng , Kang Hong-Jian , Gu Yonghong , Tian Shi-Kai
Published: April 2015

A new strategy has been developed for the catalytic kinetic resolution of primary allylic amines via enantioselective C–N bond cleavage.
“Reduction” responsive thymine-conjugated biodynamers: synthesis and solution properties
Authors: Liu Lingzhi , Wu Libin , Tan Junyan , Wang Lin , Liu Qing , Liu Pingwei , Liu Li
Published: April 2015

Nucleobase-conjugated biodynamers are generated by RAFT polymerization and the transthioesterification reaction. The biodynamers containing thioester linkages demonstrate GSH-responsive feature, and can interact with melamine and ATP in water.
Tuning N-methyl-d-glucamine density in a new radiation grafted poly(vinyl benzyl chloride)/nylon-6 fibrous boron-selective adsorbent using the response surface method
Authors: Ting T. M. , Nasef Mohamed Mahmoud , Hashim Kamaruddin
Published: April 2015

A new adsorbent containing boron-selective groups was prepared by radiation-induced grafting of vinyl benzyl chloride (VBC) onto nylon-6 fibers followed by functionalisation withN-methyl-d-glucamine (NMDG).
“Off-the-shelf” thermoresponsive hydrogel design: tuning hydrogel properties by mixing precursor polymers with different lower-critical solution temperatures
Authors: Bakaic Emilia , Smeets Niels M. B. , Dorrington Helen , Hoare Todd
Published: April 2015

Mixing POEGMA precursor polymers with different LCSTs leads to linear changes in macroscopic gel properties (e.g. mechanics, swelling) but non-linear changes in properties dependent on gel microstructure (e.g. protein adsorption, cell adhesion).
Degradation of cationic and anionic dyes in coagulation–flocculation process using bi-functionalized silica hybrid with aluminum-ferric as auxiliary agent
Authors: Lau Yen-Yie , Wong Yee-Shian , Teng Tjoon-Tow , Morad Norhashimah , Rafatullah Mohd , Ong Soon-An
Published: April 2015

Cationic dye (methylene blue) and anionic dye (methyl orange) degradation in the coagulation process was demonstrated.
Hydrothermal synthesis of Li4Ti5O12 nanosheets as anode materials for lithium ion batteries
Authors: Wu Hsin-Yi , Hon Min-Hsiung , Kuan Chi-Yun , Leu Ing-Chi
Published: April 2015

Spinel Li4Ti5O12 nanosheets prepared by hydrothermal method were used as anode materials for lithium ion batteries.
Effective adsorption of toxic brilliant green from aqueous solution using peat of Brunei Darussalam: isotherms, thermodynamics, kinetics and regeneration studies
Authors: Chieng Hei Ing , Priyantha Namal , Lim Linda B. L.
Published: April 2015

Peat, a natural adsorbent, has been successfully used for the removal of the hazardous water-soluble cationic dye, brilliant green (BG) withqmaxof 265 mg g−1.
Domino-synthesis and fluorescence properties of 4-cyano-2-oxo-1,2-dihydropyridine-3-carboxamides and 2-oxo-1,2-dihydropyridine-3,4-dicarbonitriles
Authors: Ershov O. V. , Fedoseev S. V. , Belikov M. Yu. , Ievlev M. Yu.
Published: April 2015

Non-catalytic conversion of 4-oxoalkane-1,1,2,2-tetracarbonitriles in the presence of water leads to the mixture of fluorescent 4-cyano-2-oxo-1,2-dihydropyridine-3-carboxamides and 2-oxo-1,2-dihydropyridine-3,4-dicarbonitriles in equal proportions.
Structure variations of a series of lanthanide complexes constructed from quinoline carboxylate ligands: photoluminescent properties and PMMA matrix doping
Authors: Zhang Huijie , Fan Ruiqing , Wang Ping , Wang Xinming , Gao Song , Dong Yuwei , Wang Yulei , Yang Yulin
Published: April 2015

A series of lanthanide complexes constructed from H2qldc are synthesized and the luminescence properties discussed.
Beta-lactoglobulin-based encapsulating systems as emerging bioavailability enhancers for nutraceuticals: a review
Authors: Teng Zi , Xu Ruoyang , Wang Qin
Published: April 2015

Encapsulating systems prepared with beta-lactoglobulin, the major component of whey protein, may serve as versatile bioavailability enhancers for poorly absorbed nutraceuticals.
Theoretical investigation of the mechanism of gold(i)-catalyzed hydrothiolation of alkynes and alkenes with phenthiol
Authors: Zhang XingHui , Wang KeTai
Published: April 2015

The mechanisms of gold-catalyzed hydrothiolation of alkynes and alkenes with phenthiol have been investigated using density functional theory calculations.
Synthesis of Ni/Au/Co trimetallic nanoparticles and their catalytic activity for hydrogen generation from alkaline sodium borohydride aqueous solution
Authors: Jiao Chengpeng , Huang Zili , Wang Xiaofeng , Zhang Haijun , Lu Lilin , Zhang Shaowei
Published: April 2015

Alloyed Ni/Au/Co nanoparticles with negatively-charged Au, Co atoms, and positively-charged Ni atoms were prepared as effective catalysts for hydrolysis of NaBH4.
Highly efficient synthesis and characterization of multiarm and miktoarm star-long-branched polymers via click chemistry
Authors: Ma Li , Lin Yichao , Tan Haiying , Zheng Jun , Liu Feng , Zhang Guangchun , Liu Jie , Tang Tao
Published: April 2015

Two series of 3–12 multiarm star polymers and 4-miktoarm star copolymer of butadiene and styrene, in which theMnof arm was higher than 20 kg mol−1, were synthesized with high efficiency (from 85.0% to 96.1%)viaclick chemistry.
Solvent determines the formation and properties of metal–organic frameworks
Authors: Zhang Bingxing , Zhang Jianling , Liu Chengcheng , Sang Xinxin , Peng Li , Ma Xue , Wu Tianbin , Han Buxing , Yang Guanying
Published: April 2015

Herein we synthesized Cu3(BTC)2 nanocrystals in a series of water/ethanol solvent systems at room temperature. The size and porosity of Cu3(BTC)2 can be easily modulated by controlling the composition of the mixed solvent.
A simple and automated online SPE-LC-MS/MS method for simultaneous determination of olanzapine, fluoxetine and norfluoxetine in human plasma and its application in therapeutic drug monitoring
Authors: Fan Yiran , Shen Guanghu , Li Ping , Xi Xiaonan , Wu Haiting , Tian Hongjun , Lu Yaxin , Yin Zheng
Published: April 2015

An integration of sample pretreatment automation using online SPE technique could provide an easy to use, efficient, sensitive and high quality methods for TDM.
ZnO/Ag/Mn2O3 nanocomposite for visible light-induced industrial textile effluent degradation, uric acid and ascorbic acid sensing and antimicrobial activity
Authors: Saravanan R. , Khan Mohammad Mansoob , Gupta Vinod Kumar , Mosquera E. , Gracia F. , Narayanan V. , Stephen A.
Published: April 2015

Ternary ZnO/Ag/Mn2O3 nanocomposite as photocatalyst, sensing and antimicrobial material.
Fabrication of novel wave-transparent HMPBO fibre/BADCy laminated composites
Authors: Gu Junwei , Xu Shuang , Tang Yusheng , Lv Zhaoyuan , Liang Chaobo , Meng Xudong
Published: April 2015

The method of “impregnation–winding–lamination–mould pressing” was performed to fabricate novel wave-transparent high modulus poly(p-phenylene-2,6-benzobisoxazole) fibre/bisphenol A cyanate ester resins (HMPBO fibre/BADCy) laminated composites.
Cyclodextrin-tunable reversible self-assembly of a thermoresponsive Y-shaped polymer
Authors: Yao Hao , Tian Wei , Liu Yuezhou , Bai Yang , Liu Dizheng , Liu Tingting , Qi Miao , Wang Min , Liu Yuyang
Published: April 2015

The reversible self-assembly behavior of thermoresponsive γ-shaped polymer can be effectively tuned based on the inclusion complexation, intermolecular hydrogen bonding and steric hindrance of β-CD.
Ag–ZnO heterostructure nanoparticles with plasmon-enhanced catalytic degradation for Congo red under visible light
Authors: Liu Xu , Li Weibo , Chen Nan , Xing Xinxin , Dong Chengjun , Wang Yude
Published: April 2015

Ag–ZnO heterostructured nanoparticles by a one-step solvothermal route exhibit outstanding photocatalytic efficiency for Congo red in aqueous solution under visible light irradiation.
Degradation of polycyclic aromatic hydrocarbons (PAHs) in textile dyeing sludge by O3/H2O2 treatment
Authors: Ning Xun'an , Shen Lingzhi , Sun Jian , Lin Chaoping , Zhang Yaping , Yang Zuoyi , Chen Shujun
Published: April 2015

The main advantage of O3/H2O2 treatment lies in the acceleration of the O3 transformation process by the addition of H2O2. The removal rate (within 30 min) increased by 27% for Ph and 21% for An through the addition of H2O2 to the O3 process.
Light assisted irreversible resistive switching in ultra thin hafnium oxide
Authors: Borkar Hitesh , Thakre Atul , Kushvaha Sunil S. , Aloysius R. P. , Kumar Ashok
Published: April 2015

A small amount of illumination of visible light on ultra thin films (∼5 nm) hafnium oxide demonstrated giant irreversible resistive switching, changed band off set and permanently developed trap charge states.
Reversible systems based on CO2, amino-acids and organic superbases
Authors: Carrera Gonçalo V. S. M. , Jordão Noémi , Santos Miguel M. , da Ponte Manuel Nunes , Branco Luís C.
Published: April 2015

Chiral amino-acids in the presence of an organic superbase in a CO2atmosphere were used to prepare carbamate-based ionic liquids and molten salts. Variation of the superbase and amino acid R-group gave tuneable CO2release temperatures from the products.
Sulfur-doped-ZnO-nanospire-based transparent flexible nanogenerator self-powered by environmental vibration
Authors: Hsu Cheng-Liang , Su I-Long , Hsueh Ting-Jen
Published: April 2015

An S-doped-ZnO-nanospire-based nanogenerator that converts environmental vibration into electrical energy is proposed.
Formation kinetics and photoelectrochemical properties of crystalline C70 one-dimensional microstructures
Authors: Zheng Shushu , Lu Xing
Published: April 2015

We discovered that solvents play a critical role in determining the morphology, formation process and intrinsic properties of several C70 one-dimensional microstructures, which show superior photoelectrochemical properties.
Self-standing carbon nanotube forest electrodes for flexible supercapacitors
Authors: Cherusseri Jayesh , Kar Kamal K.
Published: April 2015

A self-standing, vertically aligned carbon nanotube forest grown on unidirectional carbon fibers has been fabricated by using chemical vapour deposition.
Synthesis of monofluoroalkenes through selective hydrodefluorination of gem-difluoroalkenes with Red-Al®
Authors: Wu Jingjing , Xiao Juan , Dai Wenpeng , Cao Song
Published: April 2015

A practical approach for the selective hydrodefluorination of gem-difluoroalkenes using Red-Al® as reductant at room temperature in CH2Cl2 was reported. Monofluoroalkenes were obtained in moderate to high yields with good E-selectivity.
Sensing properties of light-emitting single walled carbon nanotubes prepared via click chemistry of ylides bound to the nanotube surface
Authors: Bayazit M. K. , Pålsson L. O. , Coleman K. S.
Published: April 2015

Fluorescent single walled carbon nanotube-mediated sensors with a detection limit of ∼10−8M for nitrophenol based chemical warfare agents and environmental pollutants.
Phosphine-catalyzed [4 + 3] cycloaddition reaction of aromatic azomethine imines with allenoates
Authors: Li Zhen , Yu Hao , Feng Yalin , Hou Zhanfeng , Zhang Lei , Yang Wenjun , Wu Yang , Xiao Yumei , Guo Hongchao
Published: April 2015

An efficient phosphine-catalyzed [4 + 3] cycloaddition of aromatic azomethine imines with allenoates has been developed, providing dinitrogen-fused heterocyclic compounds in moderate to excellent yields.
Four highly efficient cuprous complexes and their applications in solution-processed organic light-emitting diodes
Authors: Zhang Qing , Chen Xu-Lin , Chen Jun , Wu Xiao-Yuan , Yu Rongmin , Lu Can-Zhong
Published: April 2015

Four novel highly emissive cuprous complexes were prepared. The OLEDs from these complexes had a peak current efficiency of 17.8 cd A−1and an EQE of 6.4%.
A robust site-specific Au@SiO2@AgPt nanorod/nanodots superstructure for in situ SERS monitoring of catalytic reactions
Authors: Jia HaoWei , Qiu Li , Wang Jin
Published: April 2015

A site-specific trimetallic Au@SiO2@AgPt nanorod/nanodots superstructure can be fabricated to provide real-time SERS monitoring of catalytic reactions.
Monodisperse erythrocyte-sized and acid-soluble chitosan microspheres prepared via electrospraying
Authors: Wang Xiao-Xue , Ju Xiao-Jie , Sun Shao-Xing , Xie Rui , Wang Wei , Liu Zhuang , Chu Liang-Yin
Published: April 2015

Monodisperse erythrocyte-sized and acid-soluble chitosan microspheres are successfully prepared by an electrospraying method with terephthalaldehyde as the cross-linker.
Bio-ingredient assisted formation of porous TiO2 for Li-ion battery electrodes
Authors: Chang Yi-Chun , Peng Chih-Wei , Chen Po-Chin , Lee Chi-Young , Chiu Hsin-Tien
Published: April 2015

Macroporous anatase TiO2 with mesopores was generated using instant yeast and glucose as the templates. The oxide functioned as the electrode material for Li-ion battery with excellent capacity and cycling stability.
What do biochemistry students pay attention to in external representations of protein translation? The case of the Shine–Dalgarno sequence
Authors: Bussey Thomas J. , Orgill MaryKay
Published: April 2015

Biochemistry instructors often use external representations—ranging from static diagrams to dynamic animations and from simplistic, stylized illustrations to more complex, realistic presentations—to help their students visualize abstract cellular and molecular processes, mechanisms, and components. However, relatively little is known about how students use and interpret external representations in biochemistry courses. In the current study, variation theory was used to explore the potential for student learning about protein translation from a stylized, dynamic animation. The results of this study indicate that students learned from this animation, in that they noticed many critical features of the animation and integrated those features into their understandings of protein translation. However, many students also focused on a particular feature of the animation, the Shine–Dalgarno sequence, that their instructors did not feel was critical to promote an overall understanding of this metabolic process. Student attention was focused on this feature because of the design of the animation, which cued students to notice this feature by significantly varying the appearance of the Shine–Dalgarno sequence.
Multiscale electrochemistry of hydrogels embedding conductive nanotubes
Authors: Noël Jean-Marc , Mottet Léopold , Bremond Nicolas , Poulin Philippe , Combellas Catherine , Bibette Jérôme , Kanoufi Frédéric
Published: April 2015

The local functionalities of biocompatible objects can be characterized under conditions similar to the operating ones, using scanning electrochemical microscopy (SECM).
Addressing, amplifying and switching DNAzyme functions by electrochemically-triggered release of metal ions
Authors: Freage Lina , Trifonov Alexander , Tel-Vered Ran , Golub Eyal , Wang Fuan , McCaskill John S. , Willner Itamar
Published: April 2015

The addressable potential-controlled release of metal ions into electrolyte solutions containing mixtures of nucleic acids leads to the metal ion-guided generation of different DNAzymes and to the activation of DNA cascades.
Helical inner-wall texture prevents jamming in granular pipe flows
Authors: Verbücheln Felix , Parteli Eric J. R. , Pöschel Thorsten
Published: April 2015

By means of particle-based numerical simulations of gravity-driven flows in vertical pipes, we show that it is possible to obtain steady material transport by adding a helical texture to the inner-wall of the pipe.
Efficient ternary bulk heterojunction solar cells based on small molecules only
Authors: Huang Tzu-Yen , Patra Dhananjaya , Hsiao Yu-Sheng , Chang Sheng Hsiung , Wu Chun-Guey , Ho Kuo-Chuan , Chu Chih-Wei
Published: April 2015

Efficient ternary BHJ solar cells fabricated using small molecules—namely BDT6T, ICBA, and PC71BM—achieving a PCE of 6.36%.
The controlled growth of porous δ-MnO2nanosheets on carbon fibers as a bi-functional catalyst for rechargeable lithium–oxygen batteries
Authors: Zhang Peng , He Mu , Xu Shan , Yan Xingbin
Published: April 2015

Porous δ-MnO2nanosheets coated on carbon fibers were prepared as a bi-functional catalyst for rechargeable lithium–oxygen batteries.
Dual-dehydrogenation-promoted catalytic oxidation of formaldehyde on alkali-treated Pt clusters at room temperature
Authors: Zhou Peng , Yu Jiaguo , Nie Longhui , Jaroniec Mietek
Published: April 2015

Dual dehydrogenation of HCHO molecules can promote the activation of O2 molecules and regeneration of Pt catalysts.
Incorporation of a [Ru(dcbpy)(bpy)2]2+ photosensitizer and a Pt(dcbpy)Cl2 catalyst into metal–organic frameworks for photocatalytic hydrogen evolution from aqueous solution
Authors: Hou Chun-Chao , Li Ting-Ting , Cao Shuang , Chen Yong , Fu Wen-Fu
Published: April 2015

UIO-67 MOFs functionalized with a [Ru(dcbpy)(bpy)2]2+ photosensitizer and a Pt(dcbpy)Cl2 catalyst display enhanced photocatalytic activity, due to the facile electron transfer from the Ru- to Pt-centers in the MOFs.
A super-high energy density asymmetric supercapacitor based on 3D core–shell structured NiCo-layered double hydroxide@carbon nanotube and activated polyaniline-derived carbon electrodes with commercial level mass loading
Authors: Li Xiaocheng , Shen Juanjuan , Sun Wei , Hong Xuda , Wang Rutao , Zhao Xinhong , Yan Xingbin
Published: April 2015

An asymmetric supercapacitor device with an energy density of 89.7 W h kg−1 at commercial level mass loading was successfully fabricated.
Proton trapping in Y and Sn Co-doped BaZrO3
Authors: Dawson James A. , Tanaka Isao
Published: April 2015

Proton–dopant interactions in the exciting new SOFC electrolyte material, Y and Sn co-doped BaZrO3, are shown to be potentially detrimental to its electrochemical performance.
The effect of interstitial oxygen formation on the crystal lattice deformation in layered perovskite oxides for electrochemical devices
Authors: Nakamura Takashi , Ling Yihan , Amezawa Koji
Published: April 2015

Comprehensive studies on the crystal lattice deformation due to interstitial oxygen formation in layered perovskite oxides are presented.
Pristine and defect-containing phosphorene as promising anode materials for rechargeable Li batteries
Authors: Guo Gen-Cai , Wei Xiao-Lin , Wang Da , Luo Yanping , Liu Li-Min
Published: April 2015

The pristine and defect-containing phosphorene as promising anode materials for Li-ion batteries (LIBs) have been systematically investigated by first-principles calculations.
Novel solid metal–organic self-propagation combustion for controllable synthesis of hierarchically porous metal monoliths
Authors: Guo Qin , Zhao Ying , Liu Jiatu , Ma Cheng , Zhou Hangyu , Chen Libao , Huang Baiyun , Wei Weifeng
Published: April 2015

A novel solid metal–organic self-propagation combustion route to fabricate hierarchically porous metal monoliths with tunable chemistry, topography and microstructures.
Controllable synthesis of silicon nano-particles using a one-step PECVD-ionic liquid strategy
Authors: Qin Wei , Cheng Shimin , Zhou Bin , Wu Yihui , Liu Shengzhong (Frank) , Li Can
Published: April 2015

Silicon nano-particles (SiNPs) with various sizes can be controllably synthesized by a facile and novel PECVD-IL method.
Controlling aminosilane layer thickness to extend the plasma half-life of stealth persistent luminescence nanoparticles in vivo
Authors: Maldiney Thomas , Rémond Maxime , Bessodes Michel , Scherman Daniel , Richard Cyrille
Published: April 2015

In this article, we suggest the use of persistent luminescence to study the influence of aminosilane layer thickness, on bothin vitroprotein adsorption andin vivobiodistribution of stealth persistent nanophosphors.
Fe5C2 nanoparticles: a reusable bactericidal material with photothermal effects under near-infrared irradiation
Authors: Jin Yinjia , Deng Jun , Yu Jing , Yang Ce , Tong Meiping , Hou Yanglong
Published: April 2015

Hägg iron carbide (Fe5C2) was synthesized through a facile one-pot wet-chemical route and employed as a photothermal agent to inactivate bacterial cells.
Intermediate-paramagnetic phases with a half and a quarter spin entities in fluorinated biphenyl-3,5-diyl bis(tert-butyl nitroxides)
Authors: Konno Takuya , Kudo Hiroki , Ishida Takayuki
Published: April 2015

A ground-triplet molecule 25FBPBN showed spin-transition-like behaviour with a small hysteresis, while 3FBPBN maintained a single phase.
Fabrication of periodic nanoparticle clusters using a soft lithographic template
Authors: Kim Dae Seok , Honglawan Apiradee , Kim Kyungnam , Kim Mun Ho , Jeong Sohee , Yang Shu , Yoon Dong Ki
Published: April 2015

A novel fabrication method has been developed for the preparation of a periodic array of nanoparticle clusters (NPCs) using a sublimable liquid crystal (LC) material.
Hybrid photo‐receiver based on SiGe heterojunction photo‐transistor for low‐cost 60 GHz intermediate‐frequency radio‐over‐fibre applications
Authors: Viana C. , Tegegne Z.G. , Rosales M. , Polleux J.L. , Algani C. , Lecocq V. , Lyszyk C. , Denet S.
Published: April 2015

The first results of an integrated hybrid photo‐receiver based on a 850 nm two‐terminal (2T) silicon germanium (SiGe) heterojunction bipolar photo‐transistor (HPT) for low‐cost radio‐over‐fibre (RoF) applications is presented. A hybrid module was realised with two cascaded low‐noise amplifiers of 20 dB total gain and an SiGe 2T‐HPT exhibiting a −15 dB opto‐microwave gain at 5.15 GHz with a 1.6 GHz bandwidth. A 16% degradation of the error vector magnitude compared with back‐to‐back measurement for the transmission of a 2 GHz OFDM signal at 3 Gbit/s was measured based on the 60 GHz IEEE 802.15.3c standard transposed at the intermediate frequency (IF) of 5 GHz, according to an IF‐RoF distribution mode.
Containment control of second‐order discrete‐time multi‐agent systems with Markovian missing data
Authors: Mu Xiaowu , Zheng Baojie
Published: April 2015

This study investigates the containment control problem of second‐order discrete‐time multi‐agent systems with Markovian missing data in actuators and one step network‐induced time delay. The process of missing data from the controller to the actuator is modelled by a homogeneous, finite‐state and discrete‐time Markov chain. The authors first discuss the containment control problem for the case when all the elements of the transition probability matrix are completely known, then the result is extended to a more general case with only partially known transition probabilities. The distributed control protocol with one step time delay is proposed. Based on the stochastic Lyapunov–Krasovskii functional method, sufficient conditions in terms of a set of matrix inequalities are given to guarantee that the states of all the followers asymptotically converge to the convex hull formed by the corresponding states of the leaders in mean square sense. A cone complementary linearisation algorithm is used to obtain the control gains. Finally, two numerical simulations are provided to show the effectiveness of theoretical results.
Service‐level agreement aggregation for quality of service‐aware federated cloud networking
Authors: Stanik Alexander , Koerner Marc , Kao Odej
Published: April 2015

Since the cloud paradigm becomes increasingly popular for dynamic resources allocation, the flexibility of a cloud is still limited regarding network services and their autonomous federation between different providers. The following architectural approach introduces a generic layered model to orchestrate and federate heterogeneous networks. In particular, an architecture is presented that enables quality of service (QoS) aware parameterisation of network resources in a cloud infrastructure of a single data‐centre as well as for a federation. Furthermore, this architecture uses a service‐level agreement (SLA) protocol and language to expose key performance indicators and to negotiate appropriate QoS constrains that are applied to the virtually sliced underlying network substrate. In this way, capabilities of the orchestration and the current utilisation of the network are building the foundation for dynamic negotiated SLAs and the within‐guaranteed QoS network resources. Therefore an aggregation mechanism is illustrated for merging service‐level objectives and for guaranteeing a single SLA that specifies obligations and responsibilities of all participants.
Investigation on software‐defined networks’ reactive routing against BitTorrent
Authors: Vicino D. , Lung C.‐H. , Wainer G. , Dalle O.
Published: April 2015

Technologies in software‐defined networks (SDNs) introduce programmatic ways to reorganise the network logical topology. A possible practical usage of SDNs is reactive routing, where the logical topology is continuously evolving based on traffic statistics and policies. Usually, the SDNs controllers are considered transparent to the higher layers. It is expected that changes in logical topology may not affect applications. The goal is to study the impact of logical topology changes on BitTorrent, a popular peer‐to‐peer protocol in practice. This study focuses on BitTorrent, and the experimental results show that BitTorrent may produce the opposite effect to the one expected. The authors have run 32 BitTorrent clients in an emulated SDN ring topology and changed the virtual topology periodically by removing one link at the time from the ring. The experiments produced lower propagation when logical topology changed periodically than when it was static for BitTorrent traffic. For comparison, the same experiments were recreated using HTTP. For HTTP, slower propagation is obtained when logical topology changed than when it was static. Finally, the results are discussed and it has been concluded that high layer protocols need to be carefully studied, and in some cases adapted, before being deployed in SDNs.
Parasitic capacitance effect on the performance of two‐phase switched‐capacitor DC–DC converters
Authors: Wong Oi‐Ying , Wong Hei , Tam Wing‐Shan , Kok Chi‐Wah
Published: April 2015

The effects of parasitic capacitances on the performances of three common switched‐capacitor DC–DC converters operating in the complete charge transfer case were studied with matrix calculation. The study was conducted by describing the top‐ and bottom‐plate parasitic capacitances of a capacitor network in matrix form; these resulted matrices were then employed in some existing solutions so that not only the steady‐state performance, but also the dynamic‐state performance of a two‐phase switched‐capacitor DC–DC converter could be evaluated. The proposed method was validated with SPICE simulation and was used to study the final output voltage, start‐up time and start‐up energy consumption of an exponential, a Fibonacci and a linear converter under different parasitic capacitance effects.
Soft switching method for multiport DC/DC converters applicable in grid connected clean energy sources
Authors: Ajami Ali , Asadi Shayan Pouya
Published: April 2015

In this study, a novel soft switching method for multiport bidirectional DC/DC converter is proposed. As a case study, the design and performance of a grid connected photovoltaic system with battery backup storage are investigated. This test system is perfectly suitable for smart applications in the modern power systems. The soft switching (zero voltage switching (ZVS)) capability operates over a wide operating range, without the requirement of auxiliary circuits. This is seen as the main advantage of the presented method for controlling the DC/DC converter. A centralised control strategy, including maximum power point tracking, power flow management and interfacing with the utility are evaluated. Theoretical results are verified by simulation and experimental results for a three‐port DC/DC converter.
Universal acoustic modelling framework for electrical drives
Authors: Boesing Matthias , Hofmann Andreas , De Doncker Rik
Published: April 2015

The interdisciplinary task of assessing the acoustic characteristics of electrical drive‐systems gains importance in traction, industrial and consumer applications. This study presents a universal acoustic modelling framework for efficient, high‐quality acoustic modelling of electrical drives. The objective is to make drive acoustic modelling and assessment of an integral part of drive‐system design. The approach integrates directly into the general drive‐system design process and can be applied to all types of machines (synchronous, induction, switched reluctance and direct current). Inverter‐operation‐related switching frequencies and spatial machine harmonics are routinely taken into account. The process is applicable to machines with rotor or stator skew as well as to outer‐rotor and transversal‐flux machines. It combines the two fast and user‐interactive steps system simulation and vibration synthesis. The underlying model parameters are obtained via automated offline finite‐element simulations based on generic input parameters. This allows using complex electromagnetic and structural models without computation time becoming prohibitive. Application examples are given for permanent magnet synchronous machine traction drives for (hybrid) electric vehicles as well as a for a switched‐reluctance auxiliary drive. Simulated run‐up spectrograms for structure‐borne sound are validated against measurements and operational deflections are presented.
Implementation of modified current synchronous detection method for voltage control of self‐excited induction generator
Authors: Singh Bhim , Murthy S.S. , Reddy R.S. , Arora Prachi
Published: April 2015

This study presents a modified current synchronous detection method for voltage control of self‐excited induction generator (SEIG)‐based standalone power generating system using a static reactive power compensator (STATCOM). The proposed STATCOM is a three‐leg insulated gate bipolar transistor‐based voltage source inverter with self‐sustaining DC‐bus capacitor. The STATCOM offers instantaneous voltage control of SEIG through reactive power compensation. In addition to voltage control, the STATCOM also provides load balancing under unbalanced loadings and harmonics compensation while feeding non‐linear loads. The control of STATCOM is implemented using a modified current synchronous detection algorithm that uses a second‐order generalised integrator (SOGI) to filter the sensed SEIG voltages and for estimating the amplitudes of individual phase voltages. The performance of the proposed SOGI‐CSD‐based control of STATCOM is simulated in MATLAB/Simulink and verified experimentally on a developed SEIG‐STATCOM system. Test results exhibit effective harmonics suppression and load balancing capabilities of the STATCOM along with instantaneous voltage control.
Optimal receive filter design under similarity constraint in coloured noise
Authors: Zhongtao Luo , Zishu He , Kun Lu , Xuyuan Chen
Published: April 2015

This study considers the design of optimal receive filter under similarity constraint in coloured noise and compares it with signal design methods and conventional schemes. Similarity constraint restricts the sought‐after filter to be close to the transmit waveform to control the output sequence envelope, avoiding potential risks of poor range solution and high sidelobes of whitening filter (WF) in severe coloured noise. The detailed solution to this constrained optimisation problem is provided. Then, the authors compare the filter design (FD) with the schemes of conventional or designing signal based on the matched/whitening filter. Five schemes are analysed on their performances of output signal‐to‐noise ratio, sequence control and requirements for practical applications. The merits of five schemes are concluded. In simulations, comparison between the designed filter and whitening filter illustrates the necessity of similarity constraint. FD under similarity constraint is regarded as a robust scheme for output sequence envelope control, easy to implement for coloured noise suppression.
Simplified Chua's attractor via bridging a diode pair
Authors: Xu Quan , Bao Bo‐Cheng
Published: April 2015

In this paper, a simplified Chua's circuit is realised by bridging a diode pair between a passive LC (inductance and capacitance in parallel connection ‐ LC) oscillator and an active RC (resistance and capacitance in parallel connection ‐ RC) filter. The dynamical behaviours of the circuit are investigated by numerical simulations and verified by experimental measurements. It is found that the simplified Chua's circuit generates Chua's attractors similarly and demonstrates complex non‐linear phenomena including coexisting bifurcation modes and coexisting attractors in particular.
Principes et applications de l’optogénétique en neuroscience
Authors: Dugué Guillaume P. , Tricoire Ludovic
Published: April 2015

Une grande partie des progrès de la biologie est indissociable de l’évolution de la biophotonique, terme générique désignant l’utilisation de la lumière dans l’étude des systèmes vivants. Au cours des quinze dernières années, la biophotonique s’est peu à peu mariée à la génétique moléculaire pour donner naissance à l’optogénétique, un ensemble de techniques qui permettent l’étude fonctionnelle par voie optique de populations, compartiments ou processus cellulaires ciblés génétiquement. En neuroscience, l’optogénétique permet aujourd’hui d’observer et de contrôler en temps réel l’activité de populations neuronales spécifiques dans de nombreux modèles animaux. Cette avancée technique majeure apporte un degré de sophistication inédit aux méthodes expérimentales employées en neurosciences fondamentales, offrant ainsi la possibilité d’accroître considérablement notre pouvoir d’analyse des circuits neuronaux.
Les chimiothèques ciblant les interactions protéine-protéine
Authors: Sperandio Olivier , Villoutreix Bruno O. , Morelli Xavier , Roche Philippe
Published: April 2015

Les interactions protéine-protéine sont impliquées dans de nombreux processus cellulaires, ainsi que dans leur dysfonctionnement, ce qui en font des cibles thérapeutiques de choix. Toutefois, la conception de composés capables de moduler ce type d’interactions reste difficile et requiert la mise en place d’outils spécifiques, permettant d’accélérer les campagnes de développement de molécules bioactives et de diminuer leur coût. Les succès récents ont permis de caractériser certaines propriétés structurales et physicochimiques des interfaces protéine-protéine, ce qui a abouti à une possibilité d’inhibition de ces interactions par des petites molécules chimiques non peptidiques, ainsi qu’à la définition d’un profil caractéristique des composés chimiques associés. Dans cette revue, nous présentons le développement de collections de composés dédiées à ces cibles innovantes.
Palladium Nanoparticles Catalyzed Synthesis of Benzofurans by a Domino Approach
Authors: Mandali Pavan , Chand Dillip
Published: April 2015

Palladium nanoparticles (PdNPs) were used as a catalyst for the one-pot synthesis of a variety of benzofurans by Sonogashira cross-coupling reactions under ambient conditions. The catalyst could be recycled without significant loss in its activity.
A relativistically interacting exactly solvable multi-time model for two massless Dirac particles in 1 + 1 dimensions
Authors: Lienert Matthias
Published: April 2015

The question how to Lorentz transform an N-particle wave function naturally leads to the concept of a so-called multi-time wave function, i.e., a map from (space-time)N to a spin space. This concept was originally proposed by Dirac as the basis of relativistic quantum mechanics. In such a view, interaction potentials are mathematically inconsistent. This fact motivates the search for new mechanisms for relativistic interactions. In this paper, we explore the idea that relativistic interaction can be described by boundary conditions on the set of coincidence points of two particles in space-time. This extends ideas from zero-range physics to a relativistic setting. We illustrate the idea at the simplest model which still possesses essential physical properties like Lorentz invariance and a positive definite density: two-time equations for massless Dirac particles in 1 + 1 dimensions. In order to deal with a spatio-temporally non-trivial domain, a necessity in the multi-time picture, we develop a new method to prove existence and uniqueness of classical solutions: a generalized version of the method of characteristics. Both mathematical and physical considerations are combined to precisely formulate and answer the questions of probability conservation, Lorentz invariance, interaction, and antisymmetry.
Marked difference in conformational fluctuation between giant DNA molecules in circular and linear forms
Authors: Iwaki Takafumi , Ishido Tomomi , Hirano Ken , Lazutin Alexei A. , Vasilevskaya Valentina V. , Kenmotsu Takahiro , Yoshikawa Kenichi
Published: April 2015

We performed monomolecular observations on linear and circular giant DNAs (208 kbp) in an aqueous solution by the use of fluorescence microscopy. The results showed that the degree of conformational fluctuation in circular DNA was ca. 40% less than that in linear DNA, although the long-axis length of circular DNA was only 10% smaller than that of linear DNA. Additionally, the relaxation time of a circular chain was shorter than that of a linear chain by at least one order of magnitude. The essential features of this marked difference between linear and circular DNAs were reproduced by numerical simulations on a ribbon-like macromolecule as a coarse-grained model of a long semiflexible, double-helical DNA molecule. In addition, we calculated the radius of gyration of an interacting chain in a circular form on the basis of the mean field model, which provides a better understanding of the present experimental trend than a traditional theoretical equation.
Response to “Comment on ‘Frequency-domain stimulated and spontaneous light emission signals at molecular junctions’” [J. Chem. Phys. 142, 137101 (2015)]
Authors: Harbola Upendra , Agarwalla Bijay Kumar , Mukamel Shaul
Published: April 2015

In a recent work [U. Harbola, B. K. Agrawalla, and S. Mukamel, J. Chem. Phys. 141, 074107 (2014)], we have presented a superoperator (Liouville space) diagrammatic formulation of spontaneous and stimulated optical signals from current-carrying molecular junctions. We computed the diagrams that contribute to the spontaneous light emission SLE (fluorescence and Raman) signal using a diagrammatic method which clearly distinguishes between the Raman and the fluorescence contributions. We pointed out some discrepancies with the work of Galperin, Ratner and Nitzan (GRN) [M. Galperin, M. A. Ratner and, A. Nitzan, J. Chem. Phys. 130, 144109 (2009)]. In their response [M. Galperin, M. A. Ratner and A. Nitzan, “Comment on‘ Frequency-domain stimulated and spontaneous light emission signals at molecular junctions’” [J. Chem. Phys. 141, 074107 (2014)], J. Chem. Phys. 142, 137101 (2015)] to our work, GRN have argued that there are no differences in the choice of Raman diagrams in both works. Here we reply to their points and show where the differences exist.