bluuebunny/crossref_metadata_2025 huggingface dataset:
HTC-Derived Materials in Energy and Sequestration Applications
Authors: Demir-Cakan Rezan , Sevilla Marta
Published: February 2015

In this chapter the latest developments regarding the application of carbon-based materials synthesised via the hydrothermal carbonisation route in the context of energy storage and generation are presented. Furthermore, these materials are also presented in the context of gas capture and storage with a particular reference to CO2 capture materials. The use of a variety of nanostructured carbons, and carbon/inorganic composites as electrodes and electrocatalysts in supercapacitors, fuels and a variety of battery devices is presented and discussed. The advantages of preparing such carbon-based materials via the hydrothermal carbonisation platform are also discussed, with examples including the development of metal-free electrocatalysts for the oxygen-reduction reaction. The chapter intends to highlight the flexibility and opportunities afforded by the hydrothermal carbonisation platform for the synthesis of sustainable carbonaceous materials suitable to address the energy challenges of the future.
Bulk and Surface Analysis of Carbonaceous Materials
Authors: Shuttleworth Peter S. , Baccile Niki , White Robin J. , Nectoux Eric , Budarin Vitaliy L.
Published: February 2015

It is difficult to fully characterise the surface chemistry and properties of the complex materials that are carbons. These can range from amorphous-based activated carbons to organised graphene, carbon nanotubes and other forms. However, a combination of techniques, such as, TG supplemented by TGIR, XPS and Boehm titration, bromination with various solid-state NMR methodologies can permit a comprehensive understanding of both their bulk and surface characteristics. The application of these techniques in the characterisation of both the bulk and surface features of carbon-based materials will be presented and discussed ADDIN EN.REFLIST .
Microscopy and Related Techniques in the Analysis of Porous Carbonaceous Materials
Authors: Kubo Shiori , Yoshizawa Noriko
Published: February 2015

The underlying imaging principles of transmission electron microscopy (TEM) and their application in recent TEM technique development (e.g. TEM tomography) for the nanostructural description of various types of porous carbonaceous materials is discussed. Key points regarding the characterisation by microscopy of carbonaceous materials produced from sustainable precursors (e.g. carbohydrates) in contrast with conventional carbons are also addressed. The importance of selection and optimisation of observation conditions in tandem with those of specimen preparation are emphasised, leading to increasingly precise nanostructure determination (i.e., pore size/symmetry/connectivity, wall thickness/texture, and degree of metal distribution on carbon matrix) of porous carbonaceous materials as well as porous carbon–metal composites are highlighted.
Direct detection and quantification of molecular surface contaminants by infrared and Raman spectroscopy
Authors: Mandrile L. , Giovannozzi A. M. , Pennecchi F. , Saverino A. , Lobascio C. , Rossi A. M.
Published: February 2015

Detection and identification of surface molecular contamination is important for improving process and product yields in a wide range of industrial applications.
A new hypercrosslinked supermicroporous polymer, with scope for sulfonation, and its catalytic potential for the efficient synthesis of biodiesel at room temperature
Authors: Bhunia Subhajit , Banerjee Biplab , Bhaumik Asim
Published: February 2015

A new supermicroporous polymer with a BET surface area of 913 m2g−1has been synthesizedviaFriedel–Crafts alkylation between carbazole and α,α′-dibromo-p-xylene.
Gated supramolecular chemistry in hybrid mesoporous silica nanoarchitectures: controlled delivery and molecular transport in response to chemical, physical and biological stimuli
Authors: Alberti Sebastián , Soler-Illia Galo J. A. A. , Azzaroni Omar
Published: February 2015

This Feature Article discusses recent advances in the design of mesoporous silica nanoarchitectures that can control mass transport on command through the combination of flexible supramolecular routes.
Synthesis of silicon–germanium axial nanowire heterostructures in a solvent vapor growth system using indium and tin catalysts
Authors: Mullane E. , Geaney H. , Ryan K. M.
Published: February 2015

The Si–Ge–Si1−xGex nanowires (a,b) are grown directly on substrates placed in the vapour zone of a high boiling point solvent. DFSTEM image of In catalysed triple segmented Si–Ge–Si Ge nanowire is shown in (c) with arrow indicating the direction of the EDX line profile shown in (d).
Molecular structure and thermal stability of the oxide-supported phosphotungstic Wells–Dawson heteropolyacid
Authors: Matkovic Silvana R. , Collins Sebastián E. , Bonivardi Adrián L. , Bañares Miguel A. , Briand Laura E.
Published: February 2015

Infrared and Raman spectroscopic analyses allowed establishing the surface molecular structure and the thermal stability of the oxide-supported phosphotungstic Wells–Dawson heteropolyacid (HPA).
An integrated superhydrophobic-plasmonic biosensor for mid-infrared protein detection at the femtomole level
Authors: Ninno Adele De , Ciasca Gabriele , Gerardino Annamaria , Calandrini Eugenio , Papi Massimiliano , Spirito Marco De , Nucara Alessandro , Ortolani Michele , Businaro Luca , Baldassarre Leonetta
Published: February 2015

In this work we present an integrated biosensor that enables FTIR (Fourier Transform-Infrared) detection of analytes contained in diluted solutions.
A DFT study of the carboxymethyl-phosphatidylethanolamine formation from glyoxal and phosphatidylethanolamine surface. Comparison with the formation of N(ε)-(carboxymethyl)lysine from glyoxal andl-lysine
Authors: Solís-Calero C. , Ortega-Castro J. , Hernández-Laguna A. , Frau J. , Muñoz F.
Published: February 2015

Mechanisms of the generation of CML and CM-PE from the reactions between glyoxal andl-lysine, and glyoxal and phosphatidylethanolamine (PE) were studied using the DFT method.
Magnetic diffusion anomaly at the Néel temperature of pyrrhotite, Fe1−xS
Authors: William Herbert F. , Krishnamoorthy Aravind , Rands Lucy , Van Vliet Krystyn J. , Yildiz Bilge
Published: February 2015

The activation energy barrier for iron self-diffusion in Fe(1−x)S is greater in the magnetized state than the paramagnetic state above the Néel Temperature of 315 °C, leading to a difference in diffusivity of 100× at 150 °C.
Novel anion conductors – conductivity, thermodynamic stability and hydration of anion-substituted mayenite-type cage compounds C12A7:X (X = O, OH, Cl, F, CN, S, N)
Authors: Eufinger Jens-Peter , Schmidt Alexander , Lerch Martin , Janek Jürgen
Published: February 2015

The ability of the mayenite lattice to incorporate a multiplicity of foreign anions offers the possibility to develop new types of anion electrolytes as potential functional materials for sensors, fuel cells, electronic devices or ion emitters.
Anisotropic shock sensitivity in a single crystal δ-cyclotetramethylene tetranitramine: a reactive molecular dynamics study
Authors: Zhou Ting-Ting , Lou Jian-Feng , Song Hua-Jie , Huang Feng-Lei
Published: February 2015

Anisotropic sensitivity is related to different intermolecular steric arrangements across the slip plane induced by shock compression along various orientations.
The effect of an oligonucleotide on the structure of cationic DODAB vesicles
Authors: Rozenfeld Julio H. K. , Duarte Evandro L. , Barbosa Leandro R. S. , Lamy M. Teresa
Published: February 2015

An oligonucleotide induces the fusion of DODAB unilamellar vesicles into multilamellar assemblies. The structural and thermotropic properties of these assemblies resemble those of coagel phase DODAB bilayers.
Electrochemical activation of commercial polyacrylonitrile-based carbon fiber for the oxygen reduction reaction
Authors: Xu Haibo , Xia Guangsen , Liu Haining , Xia Shuwei , Lu Yonghong
Published: February 2015

Nitrogen (N)-doped carbon and its non-noble metal composite replacing platinum-based oxygen reduction reaction (ORR) electrocatalysts still have some fundamental problems that remain.
Exploring the structure and phase behavior of plasma membrane vesicles under extreme environmental conditions
Authors: Seeliger Janine , Erwin Nelli , Rosin Christopher , Kahse Marie , Weise Katrin , Winter Roland
Published: February 2015

A protocol was developed to generate GPMVs showing phase separation under ambient conditions and theirp,T-dependent phase behavior was studied.
Reexamination of the origin of the pseudo Jahn–Teller puckering instability in silicene
Authors: Soto J. R. , Molina B. , Castro J. J.
Published: February 2015

The pseudo Jahn–Teller puckering instability in the basic ring unit of silicene is due to the coupling of its ground state with two excited states through the puckering mode.
Three centered hydrogen bonds of the type CO⋯H(N)⋯X–C in diphenyloxamide derivatives involving halogens and a rotating CF3group: NMR, QTAIM, NCI and NBO studies
Authors: Lakshmipriya A. , Rama Chaudhari Sachin , Shahi Abhishek , Arunan E. , Suryaprakash N.
Published: February 2015

The existence of three centered CO⋯H(N)⋯X–C hydrogen bonds (H-bonds) involving organic fluorine and other halogens in diphenyloxamide derivatives has been explored by NMR spectroscopy and quantum theoretical studies.
Influence of a nearby substrate on the reorganization energy of hole exchange between dye molecules
Authors: Manke Fabian , Frost Jarvist M. , Vaissier Valérie , Nelson Jenny , Barnes Piers R. F.
Published: February 2015

The outer-sphere reorganisation energy for hole transfer between dye molecules in polar solvents is reduced by around 20% by dielectric substrates.
Atomic-scale origin of piezoelectricity in wurtzite ZnO
Authors: Lee Jung-Hoon , Lee Woo-Jin , Lee Sung-Hoon , Kim Seong Min , Kim Sungjin , Jang Hyun Myung
Published: February 2015

The intra-atomic 3dz2–4pz orbital self-mixing of Zn (ϕm = cdϕ3dz2 + cpϕ4pz with cd > cp) is the electronic origin of the c-axis-oriented piezoelectricity in ZnO.
Luminescent probes for the bioimaging of small anionic species in vitro and in vivo
Authors: Ashton Trent D. , Jolliffe Katrina A. , Pfeffer Frederick M.
Published: February 2015

This comprehensive review examines recent developments in the use of fluorescent/luminescent probes for the bioimaging of anionic species. Images in cover art reproduced with permission from ref. 290 and 306.
Synthesis of zinc phthalocyanine with large steric hindrance and its photovoltaic performance for dye-sensitized solar cells
Authors: Lin Li , Peng Bosi , Shi Wenye , Guo Yingying , Li Renjie
Published: February 2015

An asymmetric zinc phthalocyanine with large steric hindrance (Zn-tri-PcNc-8) shows a best efficiency of 3.01%.
“Aggregation induced phosphorescence” active “rollover” iridium(iii) complex as a multi-stimuli-responsive luminescence material
Authors: Alam Parvej , Kaur Gurpreet , Chakraborty Shamik , Roy Choudhury Angshuman , Laskar Inamur Rahaman
Published: February 2015

An ‘aggregation induced phosphorescence (AIP)’ active rollover complex was synthesized and tested it's potentiality as multi-stimuli-responsive smart luminescence material.
Luminescent [Cu4I4] aggregates and [Cu3I3]-cyclic coordination polymers supported by quinolyl-triazoles
Authors: Bai Shi-Qiang , Jiang Lu , Young David James , Hor T. S. Andy
Published: February 2015

A series of quinolyl-1,2,3-triazole supported luminescent [Cu4I4] aggregates and six-membered [Cu3I3]-cyclic coordination polymers.
A facile room temperature iodination route to in situ fabrication of patterned copper-iodide/silicon quasi-bulk-heterojunction thin films for photovoltaic application
Authors: Zhang Lei , Lei Yan , Yang Xiaogang , Cheng Jiamei , Wang Chengxiang , Jia Huimin , Zheng Zhi
Published: February 2015

A facile room temperature iodination approach is developed to in-situ fabrication of monocrystalline CuI/Si quasi-bulk-heterojunction thin films by firstly depositing an elemental copper layer on pyramidally patterned silicon surface followed by a direct elemental reaction with iodine vapour.
Anomalously large interface charge in polarity-switchable photovoltaic devices: an indication of mobile ions in organic–inorganic halide perovskites
Authors: Zhao Yong , Liang Chunjun , Zhang Huimin , Li Dan , Tian Ding , Li Guobao , Jing Xiping , Zhang Wenguan , Xiao Weikang , Liu Qian , Zhang Fujun , He Zhiqun
Published: February 2015

Anomalously large interface charge in polarity-switchable photovoltaic devices indicates the large amount of mobile ions in organic–inorganic halide perovskites.
Cleavage of C–N bonds in carbon fiber/epoxy resin composites
Authors: Deng Tiansheng , Liu Ying , Cui Xiaojing , Yang Yongxing , Jia Shiyu , Wang Yingxiong , Lu Chunxiang , Li Debao , Cai Rong , Hou Xianglin
Published: February 2015

ZnCl2 enables the effective recovery of carbon fiber and epoxy resin from their waste composites by cleaving C–N bonds.
Synthesis and protective effect of new ligustrazine derivatives against CoCl2-induced neurotoxicity in differentiated PC12 cells. Part 2
Authors: Xu Bing , Gong Yan , Xu Xin , Zhang Chenze , Zhang Yuzhong , Chu Fuhao , Liu Hongbing , Wang Penglong , Lei Haimin
Published: February 2015

The novel ligustrazine derivatives were synthesized and displayed the remarkable protective effect (highest EC50 = 0.719 μM) on PC12 cells damaged by CoCl2.
Palladium nanoparticles supported on modified single-walled carbon nanotubes: a heterogeneous and reusable catalyst in the Ullmann-type N-arylation of imidazoles and indoles
Authors: Veisi Hojat , Morakabati Nekoo
Published: February 2015

Application of SWCNT-Met/Pd as an efficient and heterogeneous catalyst in the Ullmann coupling of imidazoles and indoles with aryl iodides.
Ethylene polymerisation using solid catalysts based on layered double hydroxides
Authors: Buffet Jean-Charles , Turner Zoë R. , Cooper Robert T. , O'Hare Dermot
Published: February 2015

We report here the use of methylaluminoxane (MAO) modified aqueous miscible organic solvent treated (AMOST) layered double hydroxide, Mg6Al2(OH)16CO3·4H2O (AMO-Mg3Al-CO3) as a catalyst support system for the slurry phase polymerisation of ethylene using immobilised metallocene and non-metallocene metal complexes.
Microwave and hydrothermal syntheses of WSe2 micro/nanorods and their application in supercapacitors
Authors: Chakravarty Disha , Late Dattatray J.
Published: February 2015

The WSe2 micro/nanorods prepared using microwave and hydrothermal method shows noteworthy performance towards cyclic stability for supercapacitor.
Visible light-induced surface initiated atom transfer radical polymerization of methyl methacrylate on titania/reduced graphene oxide nanocomposite
Authors: Bansal Ankushi , Kumar Arvind , Kumar Pawan , Bojja Sreedhar , Chatterjee Alok K. , Ray Siddharth S. , Jain Suman L.
Published: February 2015

Visible light assisted copper catalyzed surface initiated atom radical transfer polymerization system for polymer growth from titania/reduced graphene oxide (TiO2/rGO) has been described.
Simultaneous preparation of nano silica and iron oxide from palm oil fuel ash and thermokinetics of template removal
Authors: Irfan Khan M. , Azizli Khairun , Sufian Suriati , Man Zakaria , Khan Aamir Sada
Published: February 2015

This work reports a method for simultaneous synthesis of nano silica and iron oxide from POFA.
Interspecies prediction of oral pharmacokinetics of different lacidipine formulations from dogs to human: physiologically based pharmacokinetic modelling combined with biorelevant dissolution
Authors: Wu Chunnuan , Kou Longfa , Ma Panqin , Gao Lifang , Li Bo , Li Ran , Luo Cong , Shentu Jianzhong , He Zhonggui , Sun Jin
Published: February 2015

PBPK modelling combined with biorelevant dissolution to quantitatively predict dog PK of different lacidipine formulations, and to extrapolate to human.
Improved antifouling property of PVDF membranes by incorporating an amphiphilic block-like copolymer for oil/water emulsion separation
Authors: Liu Yuan , Su Yanlei , Li Yafei , Zhao Xueting , Jiang Zhongyi
Published: February 2015

Amphiphilic membrane surfaces were constructed in one step by surface segregation and the membranes exhibited a superior antifouling property.
Carbon concentration dependent grain growth of Cu2ZnSnS4 thin films
Authors: Tiong Vincent Tiing , Zhang Yi , Bell John , Wang Hongxia
Published: February 2015

Influence of carbon on the grain growth of CZTS nanocrystals during high temperature annealing.
Extending N-heterocyclic carbene ligands into the third dimension: a new type of hybrid phosphazane/NHC system
Authors: Roth Torsten , Vasilenko Vladislav , Benson Callum G. M. , Wadepohl Hubert , Wright Dominic S. , Gade Lutz H.
Published: February 2015

A new type of hybrid phosph(III)azane/NHC system is described in which a phosphazane P2N2ring provides unique opportunities for modifying the electronic and steric character of these carbenes.
Analysis and characterization of iron pyrite nanocrystals and nanocrystalline thin films derived from bromide anion synthesis
Authors: Bhandari Khagendra P. , Roland Paul J. , Kinner Tyler , Cao Yifang , Choi Hyekyoung , Jeong Sohee , Ellingson Randy J.
Published: February 2015

We use a solution-based bromide anion hot injection method to synthesize stable, phase pure and highly crystalline cubic iron pyrite (FeS2) nanocrystals, with size varying from ∼70 to ∼150 nm.
Enhancement of luminescence performance from the alteration of stacking patterns of Pt(ii) dendrimers
Authors: Li Hui , Yuan Wei , Wang Xingdong , Zhan Hongmei , Xie Zhiyuan , Cheng Yanxiang
Published: February 2015

A favourable packing pattern is obtained from the alteration of a connection group between the emitting core and dendrons in the Pt(ii) dendrimers.
Facile one-pot synthesis of β-cyclodextrin-polymer-modified Fe3O4microspheres for stereoselective absorption of amino acid compounds
Authors: Huang Jun , Su Ping , Zhao Bingjie , Yang Yi
Published: February 2015

Schematic illustration for synthesis of β-CDEP and β-CDEP-modified Fe3O4microspheres, and their stereoselective absorption ofdl-tryptophan.
The effect of glycosaminoglycan content on polyethylenimine-based gene delivery within three-dimensional collagen-GAG scaffolds
Authors: Hortensius Rebecca A. , Becraft Jacob R. , Pack Daniel W. , Harley Brendan A. C.
Published: February 2015

Polyethylenimine was used as a gene delivery vector to tendon cells within three-dimensional collagen scaffolds. Scaffolds functionalized with highly sulfated heparin showed enhanced gene delivery as well as increased cellular metabolic activity.
An efficient multiple healing conductive composite via host–guest inclusion
Authors: Zhang Da-Li , Ju Xin , Li Luo-Hao , Kang Yang , Gong Xiao-Lei , Li Bang-Jing , Zhang Sheng
Published: February 2015

A self-healable conductive composite is developed by combining the small molecules and nanotubes through host–guest interactions. This material shows uniform conductivity, microwave absorption and humidity sensing properties, and can be rapidly healed to over 90% electrical and mechanical properties with the aid of water multiple times.
Synthesis of pyrroloindolines and furoindolines via cascade dearomatization of indole derivatives with carbenium ion
Authors: Liu Chuan , Yin Qin , Dai Li-Xin , You Shu-Li
Published: February 2015

Intermolecular cascade dearomatization of substituted indoles with benzodithiolylium tetrafluoroborate has been developed, providing C3 methyl-substituted pyrroloindolines and furoindolines.
A pyrazolate-stabilized sodium hydride complex
Authors: Stasch Andreas
Published: February 2015

The synthesis and structural characterisation of the first sodium hydride complex stabilised by sterically demanding pyrazolate ligands are presented.
Understanding the ionic liquid [NC4111][NTf2] from individual building blocks: an IR-spectroscopic study
Authors: Hanke Kenny , Kaufmann Matin , Schwaab Gerhard , Havenith Martina , Wolke Conrad T. , Gorlova Olga , Johnson Mark A. , Kar Bishnu Prasad , Sander Wolfram , Sanchez-Garcia Elsa
Published: February 2015

This study uses complementary spectroscopic methods in combination with quantum chemical calculations to explore at a molecular level the ionic liquid [NC4111][NTf2] from single ions to the bulk.
Theoretical analysis of [5.5.6]cyclacenes: electronic properties, strain energies and substituent effects
Authors: Esser Birgit
Published: February 2015

[5.5.6]nCyclacenes are proposed as low band gap, closed-shell materials and theoretically investigated regarding their structures, strain energies, aromaticity, electronic ground states, band gaps, and the effect of substituents.
Synthesis, structural studies and ligand influence on the stability of aryl-NHC stabilised trimethylaluminium complexes
Authors: Wu. M Melissa , Gill Arran M. , Yunpeng Lu , Falivene Laura , Yongxin Li , Ganguly Rakesh , Cavallo Luigi , García Felipe
Published: February 2015

Treatment of a series of aromatic NHCs with trimethylaluminium produced their corresponding NHC·AlMe3 adducts displaying different stabilities. Their stabilities are rationalized using topographic steric maps and NHC % V Bur.
Macrocyclic dinuclear, helical, layered and 3-D Ag(i) complexes constructed from AgX (X = NO3− and ClO4−) and flexible bis(pyridyl) ligands with a chelating spacer: syntheses, structures and photoluminescence properties
Authors: Huang Jing , Deng Zhao-Peng , Xiao Ying-Hui , Huo Li-Hua , Zhao Shu-Nan , Ge Fa-Yuan , Gao Shan
Published: February 2015

Eight novel Ag(i)-bis(pyridyl) complexes with diverse structures have been synthesized.
Rational design of Ni-based catalysts derived from hydrotalcite for selective hydrogenation of 5-hydroxymethylfurfural
Authors: Kong Xiao , Zheng Runxiao , Zhu Yifeng , Ding Guoqiang , Zhu Yulei , Li Yong-Wang
Published: February 2015

A hydrotalcite-derived Ni-Al2O3 catalyst can catalyze HMF hydrogenation to DMF, DMTHF and DHMTHF with high yields (91.5%, 97.4% and 96.2% respectively).
Magnetic nanohydrometallurgy: a nanotechnological approach to elemental sustainability
Authors: Toma Henrique E.
Published: February 2015

Magnetic nanohydrometallurgy of copper.
Multicolored silver nanoparticles for multiplexed disease diagnostics: distinguishing dengue, yellow fever, and Ebola viruses
Authors: Yen Chun-Wan , de Puig Helena , Tam Justina O. , Gómez-Márquez José , Bosch Irene , Hamad-Schifferli Kimberly , Gehrke Lee
Published: February 2015

Multicolor silver nanoparticles enable multiplexed detection of dengue, yellow fever, and Ebola virus proteins in a single lateral flow strip.
Plug-n-play microfluidic systems from flexible assembly of glass-based flow-control modules
Authors: Meng Zhi-Jun , Wang Wei , Liang Xuan , Zheng Wei-Chao , Deng Nan-Nan , Xie Rui , Ju Xiao-Jie , Liu Zhuang , Chu Liang-Yin
Published: February 2015

Simple and versatile plug-n-play microfluidic systems that are fabricated from flexible assembly of glass-based flow-control modules are developed to flexibly manipulate flows for versatile emulsion generation.
Fe3O4@porous carbon hybrid as the anode material for a lithium-ion battery: performance optimization by composition and microstructure tailoring
Authors: Zhang Xiuling , Hu Zhongbo , Xiao Xiaoling , Sun Limei , Han Songbai , Chen Dongfeng , Liu Xiangfeng
Published: February 2015

Fe3O4@C has been synthesized using the syn-carbonization strategy and the electrochemical performances have been optimized by tailoring the composition and microstructure.
Tuning the topology structures of polymolybdate-based hybrids from interpenetrated framework to interdigitated architecture via changing polymolybdate clusters
Authors: Li Shaobin , Zhang Li , Ma Huiyuan , Pang Haijun , Zhao Chunyan
Published: February 2015

Three distinct hybrids were synthesized by modulating polyoxomolybdates, which suggests that both the size and the charge of polyoxometalates play a key role in the assembling.
Visible-light-induced cleavage of 4-α-amino acid substituted naphthalimides and its application in DNA photocleavage
Authors: Zhou Jin , Fang Canliang , Liu Ying , Zhao Yao , Zhang Nan , Liu Xiangjun , Wang Fuyi , Shangguan Dihua
Published: February 2015

4-α-Amino acid substituted naphthalimides can be photocleaved at the C–N bond between the 4-amino and the amino acid residue under visible light irradiation, releasing a fluorophore, 4-aminonaphthalimide.
Architecture controlled PtNi@mSiO2 and Pt–NiO@mSiO2 mesoporous core–shell nanocatalysts for enhanced p-chloronitrobenzene hydrogenation selectivity
Authors: Liu Hongmei , Yu Hongbo , Xiong Chunrong , Zhou Shenghu
Published: February 2015

The p-CAN selectivity over Pt–NiO@mSiO2 and PtNi@mSiO2 is significantly enhanced while maintaining the high activity of the Pt catalysts.
Use of plastic-based analytical device, smartphone and chemometric tools to discriminate amines
Authors: Bueno Lígia , Meloni Gabriel N. , Reddy Subrayal M. , Paixão Thiago R. L. C.
Published: February 2015

Amine-based volatile compounds released by microorganisms offer an alternative diagnostic approach for the identification of foodborne pathogens.
Discovery of 3,3a,4,5-tetrahydro-2H-benzo[g]indazole containing quinoxaline derivatives as novel EGFR/HER-2 dual inhibitors
Authors: Zong Xi , Cai Jin , Chen Junqing , Sun Chunlong , Li Lushen , Ji Min
Published: February 2015

A series of pyrazole–quinoxaline derivatives were synthesized and most of them exhibited potent affinity for EGFR or HER-2 kinase, as well as excellent antiproliferative activity, with compound4lbeing the most active.
Correction: The hypersaline synthesis of titania: from powders to aerogels
Authors: Nisticò R. , Magnacca G. , Fechler N.
Published: February 2015

Correction for ‘The hypersaline synthesis of titania: from powders to aerogels’ by R. Nisticò et al., RSC Adv., 2015, 5, 14333–14340.
Redefining q: quaternary ammonium cross sectional area (XSA) as a general descriptor for transport-limiting PTC rate approximations
Authors: Denmark S. E. , Henle J. J.
Published: February 2015

Several descriptors were studied in transport-rate limiting PTC, with amphiphilic cross-sectional area (XSA) identified as a single-descriptor model of rate.
Na3V2O2x(PO4)2F3−2x: a stable and high-voltage cathode material for aqueous sodium-ion batteries with high energy density
Authors: Kumar P. Ramesh , Jung Young Hwa , Lim Chek Hai , Kim Do Kyung
Published: February 2015

The reversible electrochemical activity of the Na3V2O2x(PO4)2F3−2x compound in an aqueous solution is reported for the first time.
A biocompatible hydrogel with improved stiffness and hydrophilicity for modular tissue engineering assembly
Authors: Wei Dan , Xiao Wenqian , Sun Jing , Zhong Meiling , Guo Likun , Fan Hongsong , Zhang Xingdong
Published: February 2015

Inflexible hydrophilic AlgMA was introduced into a bioactive GelMA hydrogel to enhance stiffness and hydrophilicity, thus improving surface tension driven assembly of modular constructs with spatial organized cell distribution and biofunctions.
Methods applicable to membrane nanodomain studies?
Authors: Ashrafzadeh Parham , Parmryd Ingela
Published: February 2015

Membrane nanodomains are dynamic liquid entities surrounded by another type of dynamic liquid. Diffusion can take place inside, around and in and out of the domains, and membrane components therefore continuously shift between domains and their surroundings. In the plasma membrane, there is the further complexity of links between membrane lipids and proteins both to the extracellular matrix and to intracellular proteins such as actin filaments. In addition, new membrane components are continuously delivered and old ones removed. On top of this, cells move. Taking all of this into account imposes great methodological challenges, and in the present chapter we discuss some methods that are currently used for membrane nanodomain studies, what information they can provide and their weaknesses.
Microscopy of membrane lipids: how precisely can we define their distribution?
Authors: Takatori Sho , Fujimoto Toyoshi
Published: February 2015

Membrane lipids form the basic framework of biological membranes by forming the lipid bilayer, but it is becoming increasingly clear that individual lipid species play different functional roles. However, in comparison with proteins, relatively little is known about how lipids are distributed in the membrane. Several microscopic methods are available to study membrane lipid dynamics in living cells, but defining the distribution of lipids at the submicrometre scale is difficult, because lipids diffuse quickly in the membrane and most lipids do not react with aldehydes that are commonly used as fixatives. Quick-freezing appears to be the only practical method by which to stop the lipid movement instantaneously and capture the molecular localization at the moment of interest. Electron microscopic methods, using cryosections, resin sections, and freeze-fracture replicas are used to visualize lipids in quick-frozen samples. The method that employs the freeze-fracture replica is unique in that it requires no chemical treatment and provides a two-dimensional view of the membrane.
Nanodomains in early and later phases of FcɛRI signalling
Authors: Holowka David , Baird Barbara
Published: February 2015

Our long-term efforts to elucidate receptor-mediated signalling in immune cells, particularly transmembrane signalling initiated by FcɛRI, the receptor for IgE in mast cells, led us unavoidably to contemplate the role of the heterogeneous plasma membrane. Our early investigations with fluorescence microscopy revealed co-redistribution of certain lipids and signalling components with antigen-cross-linked IgE–FcɛRI and pointed to participation of ordered membrane domains in the signalling process. With a focus on this function, we have worked along with others to develop diverse and increasingly sophisticated tools to analyse the complexity of membrane structure that facilitates regulation and targeting of signalling events. The present chapter describes how initial membrane interactions of clustered IgE–FcɛRI lead to downstream cellular responses and how biochemical information integrated with nanoscale resolution spectroscopy and imaging is providing mechanistic insights at the level of molecular complexes.
Membrane nanodomains in T-cell antigen receptor signalling
Authors: Nika Konstantina , Acuto Oreste
Published: February 2015

The organization of the T-cell's plasma membrane continues to nourish the curiosity of immunologists, cell biologists and biophysicists. The main reason is the biological and biomedical interest to understand the workings of the cell–cell communication network activated by T-cells during an immune response. The molecular armamentarium of the T-cell plasma membrane helps to identify with high sensitivity, specificity and rapidity antigens from invading microbial pathogens and prepare adequate countermeasures to fend them off, while protecting from attacks against our normal tissues. Many T-cell membrane proteins act as receptors to carry out and finely tune these complex tasks. However, the TCR (T-cell receptor) holds a decisive hegemony for its crucial contribution in steering T-cell function and fate. An emerging notion is that TCR proximal signalling occurs at submicrometre-scale membrane domains. In the present chapter, we discuss the current knowledge on the TCR structure and the associated signal transduction machinery and how the notion of membrane nanodomains has decisively contributed to further understand the molecular basis of T-cell activation.
The serum protein fetuin-B is involved in the development of acute myocardial infarction
Authors: Jung Seung Hyo , Won Kyung-Jong , Lee Kang Pa , Kim Hyun-Joong , Seo Eun-Hye , Lee Hwan Myung , Park Eun Seok , Lee Seung Hyun , Kim Bokyung
Published: February 2015

The rupture of an atherosclerotic plaque is one of the main causes of coronary artery thrombotic occlusion, leading to myocardial infarction. However, the exact mechanism and causal risk factors for plaque rupture remain unclear. To identify a potential molecule that can influence atherosclerotic plaque rupture, we investigated protein expression in serum from patients with acute myocardial infarction (AMI) and stable angina (SA), using proteomic analysis. The expression of six proteins, including fibrinogen, fetuin-B, keratin 9, proapolipoprotein and fibrinogen, were altered in serum from patients with AMI compared with serum from those with SA. Of these, fetuin-B, proapolipoprotein, fibrinogen γ-B-chain precursors and fibrinogen expression were greater in serum from patients with AMI than from patients with SA. Increased fetuin-B expression in serum from AMI patients was also confirmed by Western blot analysis. Treatment with recombinant human fetuin-B increased the migration in monocytes and macrophages in a concentration-dependent manner. Fetuin-B also affected vascular plaque-stabilizing factors, including lipid deposition and cytokine production in macrophages, the activation of matrix metalloproteinase (MMP)-2 in monocytes, and the activation of apoptosis and MMP-2 in vascular smooth muscle cells. Moreover, in vivo administration of fetuin-B decreased the collagen accumulation and smooth muscle cell content and showed an increased number of macrophages in the vascular plaque. From these results, we suggest that fetuin-B may act as a modulator in the development of AMI. This study may provide a therapeutic advantage for patients at high risk of AMI.
Metrical Encoding in Adults Who Do and Do Not Stutter
Authors: Coalson Geoffrey A. , Byrd Courtney T.
Published: February 2015

Purpose

The purpose of this study was to explore metrical aspects of phonological encoding (i.e., stress and syllable boundary assignment) in adults who do and do not stutter (AWS and AWNS, respectively).

Method

Participants monitored nonwords for target sounds during silent phoneme monitoring tasks across two distinct experiments. For Experiment 1, the 22 participants (11 AWNS, 11 AWS) silently monitored target phonemes in nonwords with initial stress. For Experiment 2, an additional cohort of 22 participants (11 AWNS, 11 AWS) silently monitored phonemes in nonwords with noninitial stress.

Results

In Experiment 1, AWNS and AWS silently monitored target phonemes in initial stress stimuli with similar speed and accuracy. In Experiment 2, AWS demonstrated a within-group effect that was not present for AWNS. They required additional time when monitoring phonemes immediately following syllable boundary assignment in stimuli with noninitial stress. There was also a between-groups effect, with AWS exhibiting significantly greater errors identifying phonemes in nonwords with noninitial stress than AWNS.

Conclusions

Findings suggest metrical properties may affect the time course of phonological encoding in AWS in a manner distinct from AWNS. Specifically, in the absence of initial stress, metrical encoding of the syllable boundary may delay speech planning in AWS and contribute to breakdowns in fluent speech production.
Assessment of Cognitive-Communication Disorders in Adults with Mild Traumatic Brain Injury
Authors: Krug Heather , Turkstra Lyn S.
Published: February 2015

Mild traumatic brain injury (mTBI) has been in the news lately, particularly mTBI in school-aged children, professional athletes, and service members and veterans. College students have received less attention, but college students also are at high risk for mTBI, and lasting impairments can have major effects on academic performance. Speech-language pathologists (SLPs) can play an important role in supporting college students with mTBI, and several universities are developing concussion clinics directed by SLPs. In this paper, we describe our experience developing an SLP-run college concussion clinic in collaboration with peers and other team members. We present our protocol for assessment and guidelines for management and referral.
What to Do When You Don't Know What to Do: Dealing With Challenging Behaviors in a Therapeutic Session
Authors: DiLuzio Lynette
Published: February 2015

Many speech-language pathologists experience students who demonstrate challenging behaviors during sessions both in the classroom and in the therapy room. Positive reinforcement and other traditional supports can ameliorate these behaviors. However, when students become used to these methods, speech-language pathologists are often at a loss and must look to other methods to work through the challenging behaviors. Themes explored in this article include changing perspectives on “behavior,” building relationships, constructing the treatment environment, and reinforcement schedules.
Utilizing Positive Behavioral Interventions and Supports to Reinforce Therapeutic Practices in the Schools
Authors: Zurawski Lyndsey
Published: February 2015

Speech-language pathologists (SLPs) are faced with providing therapeutic services to students with a variety of disorders. Students with disorders such as speech and language impairments, autism, and intellectual disabilities can demonstrate behaviors within the classroom setting. Speech-language pathologists are a part of a collaborative team responsible for providing supports or interventions. Often, SLPs are unaware of behavioral strategies/interventions that correlate to school-wide expectations. This article provides examples of positive behavior interventions and supports (PBIS) that can be utilized to support students with disabilities in and out of the classroom.
Queueing model for heterogeneous opportunistic spectrum access
Authors: Azarfar Arash , Frigon Jean‐François , Sansò Brunilde
Published: February 2015

In this study, we propose a queueing model to analyse the performance of an opportunistic spectrum access (OSA) system with service interruptions operating over heterogeneous channels in which the service transmission rate and the service interruption rate after the transmission is resumed are generally different than their value prior to the interruption. We first propose Markov chain models to analyse this system under memoryless service time and availability periods. On the basis of simplification assumptions, we also provide an analytical z‐Transform analysis of the Markov models. The Markov model and approximations are validated with accurate system simulations. We also provide numerical results illustrating the non‐convex relations between the traffic metrics and system parameters and that the proposed models are essential for optimal OSA network planning and operation. We further analyse and discuss the OSA queueing model for general distribution of service time and availability periods. The analytical and simulation results indicate that for usual system parameters, the queue average occupancy is similar for different distributions of service time and availability periods and that the memoryless Markov models can be used to accurately predict the heterogeneous OSA system traffic performance.
Interleaved resonant converter with the balanced flying capacitors
Authors: Lin Bor‐Ren , Chen Jeng‐Yu
Published: February 2015

This study presents a new DC/DC converter for high input voltage and high load current applications. To adopt low voltage rating power devices in high voltage applications, two split capacitors with four active switches are used in the primary side to reduce the voltage stress of power switches at Vin/2. Two flying capacitances are used to automatically balance two split capacitor voltages in every switching cycle. The proposed converter includes two resonant circuits to share the load current and to reduce the current stress of passive components. If the switching frequency is less than the series resonant frequency, power switches can be turned on under zero‐voltage switching and rectifier diodes can be turned off under zero current switching. Therefore the switching losses on power semiconductors are reduced. The interleaved pulse‐width modulation is adopted to further reduce the ripple current at output side. Thus, the output filter inductances can be reduced. Finally, experiments with a 1.2 kW prototype are provided to verify the effectiveness of the proposed converter.
Large‐scale photovoltaic plant harmonic transmission model and analysis on resonance characteristics
Authors: Luo An , Xie Ning , Shuai Zhikang , Chen Yandong , Jin Guobin , Ma Fujun , Lv Zhipeng
Published: February 2015

Harmonics generated from large‐scale grid‐connected photovoltaic plant (GCPV) has the characteristics of high frequency and wide frequency range. So the adverse impact of distributed parameter of high‐voltage cables becomes more significant. Based on an actual GCPV, harmonic output particularities were discussed according to its operating mechanism. Step‐up transformer, reactive power compensation device, distributed capacitance of transmission line and the loads were considered, the passive multiport network model was established, and the transmission mechanism of harmonics in this network was analysed by the definition of resonance amplification factors. Double resonance curves of harmonic current were discovered, that is, the transmission line of different distance may amplify a harmonic current twice. The simulation and data measurement in the field were carried out based on a large‐scale GCPV in Qinghai province. The proposed scheme was verified by the comparison of simulation data and measurements.
Re‐entry vehicle tracking with a new multiple model estimation applicable to highly non‐linear dynamics
Authors: Shin Sang‐Jin
Published: February 2015

This study proposes a new multiple model estimation algorithm. Although the derivation of the proposed algorithm is different from the existing interacting multiple model (IMM), both algorithms are exactly the same if the dynamic system is linear. However, for non‐linear systems, it appears that the proposed algorithm is different from the IMM algorithm. The proposed algorithm is applied to the tracking problem of re‐entry vehicles that is known as highly non‐linear system. The estimation performance of the proposed algorithm is compared with IMM by a series of simulation runs. The result shows that the proposed algorithm improves the estimation performance.
Redox-activity and self-organization of iron-porphyrin monolayers at a copper/electrolyte interface
Authors: Phan Thanh Hai , Wandelt Klaus
Published: February 2015

The electrochemical behaviour and molecular structure of a layer of water-soluble 5,10,15,20-Tetrakis-(N-methyl-4-pyridyl)-porphyrin-Fe(III) pentatosylate, abbreviated as FeTMPyP, on a chloride modified Cu(100) electrode surface were investigated by means of cyclic voltammetry (CV) and in-situ electrochemical scanning tunneling microscopy. Voltammetric results of HOPG in an electrolyte containing FeTMPyP molecules indicate three distinguishable redox steps involving both the central iron metal and the π-conjugated ring system. However, only the first two reduction steps are observable within the narrow potential window of CVs of Cu(100) measured in the same electrolyte. In the potential range below the first reduction peak, at which the [FeIIITMPyP]5+ molecules are reduced to the corresponding [FeIITMPyP]4+ species, in-situ scanning tunneling microscopy (STM) images revealed, for the first time, a highly ordered adlayer of this reduced porphyrin species on the chloride terminated Cu(100) surface. The ordered adlayer exhibits a (quasi)square unit cell with the lattice vectors a→2=b→2=1.53±0.1 nm and an angle of 93° ± 2° between them. A model is proposed based on the STM observation illustrating the arrangement of the [FeIITMPyP]4+ molecules at the electrolyte/copper interface.
First-order derivative couplings between excited states from adiabatic TDDFT response theory
Authors: Ou Qi , Bellchambers Gregory D. , Furche Filipp , Subotnik Joseph E.
Published: February 2015

We present a complete derivation of derivative couplings between excited states in the framework of adiabatic time-dependent density functional response theory. Explicit working equations are given and the resulting derivative couplings are compared with derivative couplings from a pseudo-wavefunction ansatz. For degenerate excited states, i.e., close to a conical intersection (CI), the two approaches are identical apart from an antisymmetric overlap term. However, if the difference between two excitation energies equals another excitation energy, the couplings from response theory exhibit an unphysical divergence. This spurious behavior is a result of the adiabatic or static kernel approximation of time-dependent density functional theory leading to an incorrect analytical structure of the quadratic response function. Numerical examples for couplings close to a CI and for well-separated electronic states are given.
Temperature-dependent structure of Tb-doped magnetite nanoparticles
Authors: Rice Katherine P. , Russek Stephen E. , Geiss Roy H. , Shaw Justin M. , Usselman Robert J. , Evarts Eric R. , Silva Thomas J. , Nembach Hans T. , Arenholz Elke , Idzerda Yves U.
Published: February 2015

High quality 5 nm cubic Tb-doped magnetite nanoparticles have been synthesized by a wet-chemical method to investigate tailoring of magnetic properties for imaging and biomedical applications. We show that the Tb is incorporated into the octahedral 3+ sites. High-angle annular dark-field microscopy shows that the dopant is well-distributed throughout the particle, and x-ray diffraction measurements show a small lattice parameter shift with the inclusion of a rare-earth dopant. Magnetization and x-ray magnetic circular dichroism data indicate that the Tb spins are unpolarized and weakly coupled to the iron spin lattice at room temperature, and begin to polarize and couple to the iron oxide lattice at temperatures below 50 K. Broadband ferromagnetic resonance measurements show no increase in magnetic damping at room temperature for Tb-doped nanoparticles relative to undoped nanoparticles, further confirming weak coupling between Fe and Tb spins at room temperature. The Gilbert damping constant, α, is remarkably low for the Tb-doped nanoparticles, with α = 0.024 ± 0.003. These nanoparticles, which have a large fixed moment, a large fluctuating moment and optically active rare-earth elements, are potential high-relaxivity T1 and T2 MRI agents with integrated optical signatures.
Recurrence theorems: A unified account
Authors: Wallace David
Published: February 2015

I discuss classical and quantum recurrence theorems in a unified manner, treating both as generalisations of the fact that a system with a finite state space only has so many places to go. Along the way, I prove versions of the recurrence theorem applicable to dynamics on linear and metric spaces and make some comments about applications of the classical recurrence theorem in the foundations of statistical mechanics.
A molecular symmetry analysis of the electronic states and transition dipole moments for molecules with two torsional degrees of freedom
Authors: Obaid R. , Leibscher M.
Published: February 2015

We present a molecular symmetry analysis of electronic states and transition dipole moments for molecules which undergo large amplitude intramolecular torsions. The method is based on the correlation between the point group of the molecule at highly symmetric configurations and the molecular symmetry group. As an example, we determine the global irreducible representations of the electronic states and transition dipole moments for the quinodimethane derivative 2-[4-(cyclopenta-2,4-dien-1-ylidene)cyclohexa-2,5-dien-1-ylidene]-2H-1,3-dioxole for which two torsional degrees of freedom can be activated upon photo-excitation and construct the resulting symmetry adapted transition dipole functions.