bluuebunny/crossref_metadata_2025 huggingface dataset:
Epigenomic profiling of preterm infants reveals DNA methylation differences at sites associated with neural function
Authors: Sparrow S , Manning J R , Cartier J , Anblagan D , Bastin M E , Piyasena C , Pataky R , Moore E J , Semple S I , Wilkinson A G , Evans M , Drake A J , Boardman J P
Published: January 2016

DNA methylation (DNAm) plays a determining role in neural cell fate and provides a molecular link between early-life stress and neuropsychiatric disease. Preterm birth is a profound environmental stressor that is closely associated with alterations in connectivity of neural systems and long-term neuropsychiatric impairment. The aims of this study were to examine the relationship between preterm birth and DNAm, and to investigate factors that contribute to variance in DNAm. DNA was collected from preterm infants (birth<33 weeks gestation) and healthy controls (birth>37 weeks), and a genome-wide analysis of DNAm was performed; diffusion magnetic resonance imaging (dMRI) data were acquired from the preterm group. The major fasciculi were segmented, and fractional anisotropy, mean diffusivity and tract shape were calculated. Principal components (PC) analysis was used to investigate the contribution of MRI features and clinical variables to variance in DNAm. Differential methylation was found within 25 gene bodies and 58 promoters of protein-coding genes in preterm infants compared with controls; 10 of these have neural functions. Differences detected in the array were validated with pyrosequencing. Ninety-five percent of the variance in DNAm in preterm infants was explained by 23 PCs; corticospinal tract shape associated with 6th PC, and gender and early nutritional exposure associated with the 7th PC. Preterm birth is associated with alterations in the methylome at sites that influence neural development and function. Differential methylation analysis has identified several promising candidate genes for understanding the genetic/epigenetic basis of preterm brain injury.
Aberrant expression of microRNAs as biomarker for schizophrenia: from acute state to partial remission, and from peripheral blood to cortical tissue
Authors: Lai C-Y , Lee S-Y , Scarr E , Yu Y-H , Lin Y-T , Liu C-M , Hwang T-J , Hsieh M H , Liu C-C , Chien Y-L , Udawela M , Gibbons A S , Everall I P , Hwu H-G , Dean B , Chen W J
Published: January 2016

Based on our previous finding of a seven-miRNA (hsa-miR-34a, miR-449a, miR-564, miR-432, miR-548d, miR-572 and miR-652) signature as a potential biomarker for schizophrenia, this study aimed to examine if hospitalization could affect expressions of these miRNAs. We compared their expression levels between acute state and partial remission state in people with schizophrenia (n=48) using quantitative PCR method. Further, to examine whether the blood and brain show similar expression patterns, the expressions of two miRNAs (hsa-miR-34a and hsa-miR-548d) were examined in the postmortem brain tissue of people with schizophrenia (n=25) and controls (n=27). The expression level of the seven miRNAs did not alter after ~2 months of hospitalization with significant improvement in clinical symptoms, suggesting the miRNAs could be traits rather than state-dependent markers. The aberrant expression seen in the blood of hsa-miR-34a and hsa-miR-548d were not present in the brain samples, but this does not discount the possibility that the peripheral miRNAs could be clinically useful biomarkers for schizophrenia. Unexpectedly, we found an age-dependent increase in hsa-miR-34a expressions in human cortical (Brodmann area 46 (BA46)) but not subcortical region (caudate putamen). The correlation between hsa-miR-34a expression level in BA46 and age was much stronger in the controls than in the cases, and the corresponding correlation in the blood was only seen in the cases. The association between the miRNA dysregulations, the disease predisposition and aging warrants further investigation. Taken together, this study provides further insight on the candidate peripheral miRNAs as stable biomarkers for the diagnostics of schizophrenia.
Aptamers in analytics
Authors: Ilgu Muslum , Nilsen-Hamilton Marit
Published: January 2016

Nucleic acid aptamers are promising alternatives to antibodies in analytics.
Multiplex microfluidic system integrating sequential operations of microalgal lipid production
Authors: Kwak Ho Seok , Kim Jaoon Young Hwan , Na Sang Cheol , Jeon Noo Li , Sim Sang Jun
Published: January 2016

We developed a PDMS-based multiplex microfluidic system with eight chambers and micropillar arrays to expedite multiple steps for lipid sample preparation from different microalgal strains.
A quantitative method study on pertechnetate in aqueous solution using Raman spectroscopy
Authors: Zhang Qianci , Zhu Haiqiao , Chang Zhiyuan , Luo Zhongyan , Bai Xue , Li Dingming
Published: January 2016

The quantification of TcO4− in aqueous solutions simply using Raman spectroscopy with NO3− and water as internal standards without a sample preparation step.
Synthesis of Cu2O on AlOOH/reduced graphene oxide for non-enzymatic amperometric glucose sensing
Authors: Yang Ziyin , Yan Xiaoqin , Li Zhi , Zheng Xiaohui , Zheng Jianbin
Published: January 2016

Cu2O/AlOOH/rGO nanocomposites were synthesized by employing AlOOH/rGO as the support for Cu2O catalysts and then the nanocomposites were used for fabricating nonenzymatic glucose sensors.
The morpholino molecular beacon for specific RNA visualization in vivo
Authors: Chen Jianbin , Wu Jikui , Hong Yunhan
Published: January 2016

A non-invasive fluorescent probe, morpholino molecular beacon (MO-MB), was designed for safe, stable and specific RNA visualization in vivo.
A fluorescent switchable AIE probe for selective imaging of dipeptidyl peptidase-4 in vitro and in vivo and its application in screening DPP-4 inhibitors
Authors: Wang Yi , Wu Xueli , Cheng Yiyu , Zhao Xiaoping
Published: January 2016

A novel fluorescent probe for in vitro and in vivo imaging of dipeptidyl peptidase-4 (DPP-4) was designed and synthesized.
Backbone assignment for minimal protein amounts of low structural homogeneity in the absence of deuteration
Authors: Xiang ShengQi , Biernat Jacek , Mandelkow Eckhard , Becker Stefan , Linser Rasmus
Published: January 2016

A set of higher-dimensionality 1H-detected experiments is introduced for assigning non-deuterated proteins with low sample homogeneity at fast MAS.
Fluorine substitution influence on benzo[2,1,3]thiadiazole based polymers for field-effect transistor applications
Authors: Wang Ming , Ford Michael , Phan Hung , Coughlin Jessica , Nguyen Thuc-Quyen , Bazan Guillermo C.
Published: January 2016

Four conjugated D–A copolymers using benzo[2,1,3]thiadiazole fragments with varying degrees of fluorination as the acceptor structural units have been synthesized and characterized.
Brønsted acid mediated N–O bond cleavage for α-amination of ketones through the aromatic nitroso aldol reaction
Authors: Ramakrishna Isai , Sahoo Harekrishna , Baidya Mahiuddin
Published: January 2016

A Brønsted acid mediated N–O bond cleavage for α-amination of ketones has been developed through the nitroso aldol reaction of less-reactive aromatic nitroso compounds and silyl enol ethers having a disilane (–SiMe2TMS) backbone.
The synthesis and characterization of the meso–meso linked antiaromatic tetraoxa isophlorin dimer
Authors: Reddy Baddigam Kiran , Gadekar Santosh C. , Anand Venkataramanarao G.
Published: January 2016

The meso–meso linked antiaromatic isophlorin dimer has been synthesized through the bis-cyclization of a tetra-furan.
Crystallographic insights into (CH3NH3)3(Bi2I9): a new lead-free hybrid organic–inorganic material as a potential absorber for photovoltaics
Authors: Eckhardt Kai , Bon Volodymyr , Getzschmann Jürgen , Grothe Julia , Wisser Florian M. , Kaskel Stefan
Published: January 2016

The crystal structure of methyl ammonium iodobismuthate, a new lead-free light-absorbing material for the application in solar cells was determined by single crystal measurements.
On the origin of high activity of hcp metals for ammonia synthesis
Authors: Ahmadi Shideh , Kaghazchi Payam
Published: January 2016

We find that the high activity of nanoparticles of hcp metals (Ru, Os, and Re) for ammonia synthesis is due to the N-induced formation of atomically-rough {134̄2} facets.
Coherent vibration and ultrafast dynamics upon bond formation in excited dimers of an Au(i) complex
Authors: Iwamura Munetaka , Wakabayashi Ryo , Maeba Junichi , Nozaki Koichi , Takeuchi Satoshi , Tahara Tahei
Published: January 2016

Au–Au bond strengthening in photoexcited dimers of an Au(i) complex is captured in solution as oscillations of femtosecond absorption signals.
Partitioning of mobile ions between ion exchange polymers and aqueous salt solutions: importance of counter-ion condensation
Authors: Kamcev Jovan , Galizia Michele , Benedetti Francesco M. , Jang Eui-Soung , Paul Donald R. , Freeman Benny D. , Manning Gerald S.
Published: January 2016

Equilibrium partitioning of ions between a membrane and a contiguous external solution strongly influences transport properties of polymeric membranes used for water purification and energy generation applications.
Atomic and electronic aspects of the coloration mechanism of gasochromic Pt/Mo-modified V2O5 smart films: an in situ X-ray spectroscopic study
Authors: Lu Ying-Rui , Hsu Hsin-Hua , Chen Jeng-Lung , Chang Han-Wei , Chen Chi-Liang , Chou Wu-Ching , Dong Chung-Li
Published: January 2016

In situ/operando XAS investigation reveals the coloration mechanism of gasochromic smart films.
Spin–orbit coupling effects on electronic structures in stanene nanoribbons
Authors: Xiong Wenqi , Xia Congxin , Peng Yuting , Du Juan , Wang Tianxing , Zhang Jicai , Jia Yu
Published: January 2016

SOC effects open the band gaps of stanene sheets and ZSnNRs, but reduce the band gaps of ASnNRs.
The effect of crystallinity on photocatalytic performance of Co3O4 water-splitting cocatalysts
Authors: Chua Chin Sheng , Ansovini Davide , Lee Coryl Jing Jun , Teng Yin Ting , Ong Lay Ting , Chi Dongzhi , Hor T. S. Andy , Raja Robert , Lim Yee-Fun
Published: January 2016

Amorphous/nano-crystalline Co3O4 cocatalysts incorporated into WO3 photoanodes show vastly superior performance compared to their highly-crystalline counterparts.
Rational design of hierarchical ZnO superstructures for efficient charge transfer: mechanistic and photovoltaic studies of hollow, mesoporous, cage-like nanostructures with compacted 1D building blocks
Authors: Chetia Tridip Ranjan , Ansari Mohammad Shaad , Qureshi Mohammad
Published: January 2016

Exotic 3D ZnO superstructures are synthesized utilizing a biomass derived polysaccharide “sodium alginate” and their photovoltaic properties are evaluated.
Gas phase equilibrium structure of histamine
Authors: Tikhonov Denis S. , Rykov Anatolii N. , Grikina Olga E. , Khaikin Leonid S.
Published: January 2016

Equilibrium structure of histamine in the gas phase was determined, tautomeric and conformational conversion mechanisms were studied theoretically.
In vacuo interfacial tetrapyrrole metallation
Authors: Diller Katharina , Papageorgiou Anthoula C. , Klappenberger Florian , Allegretti Francesco , Barth Johannes V. , Auwärter Willi
Published: January 2016

This review provides a comprehensive overview of tetrapyrrole metallation at well-defined surfaces under ultra-high vacuum conditions, including state-of-the-art methodology.
Interfacial phenomena in gas hydrate systems
Authors: Aman Zachary M. , Koh Carolyn A.
Published: January 2016

The different hydrate–fluid–solid interactions that play critical roles in all energy applications of hydrate research.
Development of novel lithium borate additives for designed surface modification of high voltage LiNi0.5Mn1.5O4 cathodes
Authors: Xu Mengqing , Zhou Liu , Dong Yingnan , Chen Yanjing , Demeaux Julien , MacIntosh Alex D. , Garsuch Arnd , Lucht Brett L.
Published: January 2016

A novel series of lithium alkyl trimethyl borates and lithium aryl trimethyl borates have been prepared and investigated as cathode film forming additives.
Integrated process for the catalytic conversion of biomass-derived syngas into transportation fuels
Authors: Dagle Vanessa Lebarbier , Smith Colin , Flake Matthew , Albrecht Karl O. , Gray Michel J. , Ramasamy Karthikeyan K. , Dagle Robert A.
Published: January 2016

Efficient synthesis of renewable fuels that will enable cost competitiveness with petroleum-derived fuels remains a grand challenge.
Liquid structure of the choline chloride-urea deep eutectic solvent (reline) from neutron diffraction and atomistic modelling
Authors: Hammond Oliver S. , Bowron Daniel T. , Edler Karen J.
Published: January 2016

The structure of 1 : 2 choline chloride : urea (reline) deep eutectic solvent has been determined, showing extensive hydrogen bonding between all species.
Selective upgrading of ethanol with methanol in water for the production of improved biofuel—isobutanol
Authors: Liu Qiang , Xu Guoqiang , Wang Xicheng , Mu Xindong
Published: January 2016

Ethanol could be upgraded with methanol directly and selectively using precisely immobilized Ir catalysts.
Catalytic versus stoichiometric reagents as a key concept for Green Chemistry
Authors: Delidovich I. , Palkovits R.
Published: January 2016

Editorial on the role of catalysis in Green Chemistry.
Absolute 3D reconstruction of thin films topography in microfluidic channels by interference reflection microscopy
Authors: Huerre A. , Jullien M.-C. , Theodoly O. , Valignat M.-P.
Published: January 2016

The topography of thin films in microfluidic channels can be reconstructed at the nanometric scale from interference microscopy imaging by modelling the multiple reflections at the upper and the lower surfaces of the microchannel.
Understanding the functional impact of copy number alterations in breast cancer using a network modeling approach
Authors: Srihari Sriganesh , Kalimutho Murugan , Lal Samir , Singla Jitin , Patel Dhaval , Simpson Peter T. , Khanna Kum Kum , Ragan Mark A.
Published: January 2016

We apply a network approach to identify genes associated incisor intranswith copy-number alterations in breast cancer pathogenesis.
Physicochemical and antimicrobial photodynamic chemotherapy of unsymmetrical indium phthalocyanines alone or in the presence of magnetic nanoparticles
Authors: Osifeko Olawale L. , Uddin Imran , Mashazi Philani N. , Nyokong Tebello
Published: January 2016

An aminophenoxy substituent indium phthalocyanine was linked to magnetic nanoparticles and the conjugate showed less activity than the Pc alone towards photodynamic antimicrobial chemotherapy ofE. coli.
A biopolymer gel-decorated cobalt molybdate nanowafer: effective graft polymer cross-linked with an organic acid for better energy storage
Authors: Ramkumar Ramya , Minakshi Sundaram Manickam
Published: January 2016

An effective cross-linking strategy for grafting a polymer onto CoMoO4suits longevity for the fabricated hybrid energy storage device in aqueous solutions.
Effective magnetic coupling with strong spin frustration in (Ph3MeP+)(C60˙−) and reversible C60˙− dimerization in (Ph3MeP+)(C60˙−)·C6H5CN. Effect of solvent on structure and properties
Authors: Konarev Dmitri V. , Khasanov Salavat S. , Kuzmin Alexey V. , Otsuka Akihiro , Yamochi Hideki , Saito Gunzi , Lyubovskaya Rimma N.
Published: January 2016

Antiferromagnetic coupling of spins with spin frustration and fullerene dimerization are observed for (Ph3MeP+)(C60˙−) (left) and (Ph3MeP+)(C60˙−)·C6H5CN (right).
Enhanced performance of dye-sensitized solar cells with Y-shaped organic dyes containing di-anchoring groups
Authors: Jia Hailang , Shen Kang , Ju Xuehai , Zhang Mingdao , Zheng Hegen
Published: January 2016

Introducing two carboxylic acid anchors by the benzene bridge in the design of sensitizers can effectively improve the performance of DSSCs.
Aromatic ring hydrogenation catalysed by nanoporous montmorillonite supported Ir(0)-nanoparticle composites under solvent free conditions
Authors: Das Prabin , Sarmah Podma Pollov , Borah Bibek Jyoti , Saikia Lakshi , Dutta Dipak Kumar
Published: January 2016

Ir nanoparticles supported on nanoporous montmorillonite clay showing efficient catalytic activity for hydrogenation of aromatic compounds.
“Pinwheel” subunit-directed polyoxometalate-based hybrid compound [Cu(bimb)2]2[β-Mo8O26] with both helixes and chiral layers
Authors: Sun Wenlong , Yu Jia , Pang Haijun , Ma Huiyuan , Zhao Chunyan
Published: January 2016

An unprecedented hybrid octamolybdate-based compound with both chiral and helical structure, consisting of a pair of enantiomorphous chiral “pinwheel” subunits, has been synthesized and its photocatalytic properties have been investigated.
Efficient preparation of boehmite silica dopamine sulfamic acid as a novel nanostructured compound and its application as a catalyst in some organic reactions
Authors: Hajjami Maryam , Ghorbani-Choghamarani Arash , Ghafouri-Nejad Raziyeh , Tahmasbi Bahman
Published: January 2016

Nano-boehmite was prepared in water at room temperature using commercially available materials and applied as supports for the preparation of a new catalyst.
A photocatalytic graphene quantum dots–Cu2O/bipolar membrane as a separator for water splitting
Authors: Liu Xian , Jian Xuan , Yang Huimin , Song Xiuli , Liang Zhenhai
Published: January 2016

A novel graphene quantum dots–Cu2O/bipolar membrane was used for water splitting with photoelectron-synergistic catalysis.
From adsorbents to electrode materials: facile hydrothermal synthesis of montmorillonite/polyaniline/metal oxide (hydroxide) composites
Authors: Xu Weibing , Mu Bin , Wang Aiqin
Published: January 2016

Montmorillonite/polyaniline/metal oxide (hydroxide) composites are fabricated from the spent adsorbents of montmorillonite/polyaniline for the electrode materials of supercapacitors.
Plasmon-enhanced two-photon-induced isomerization for highly-localized light-based actuation of inorganic/organic interfaces
Authors: Lim Chang-Keun , Li Xin , Li Yue , Drew Kurt L. M. , Palafox-Hernandez J. Pablo , Tang Zhenghua , Baev Alexander , Kuzmin Andrey N. , Knecht Marc R. , Walsh Tiffany R. , Swihart Mark T. , Ågren Hans , Prasad Paras N.
Published: January 2016

Plasmon-enhanced two-photon isomerization of non-donor/acceptor modified azobenzene on Ag NPs.
A self-assembly aptasensor based on thick-shell quantum dots for sensing of ochratoxin A
Authors: Chu Xianfeng , Dou Xiaowen , Liang Ruizheng , Li Menghua , Kong Weijun , Yang Xihui , Luo Jiaoyang , Yang Meihua , Zhao Ming
Published: January 2016

A tunable-valency self-assembling aptasensor based on a thick-shell quantum dot was fabricated for ochratoxin A (OTA).
Silicon monoxide – a convenient precursor for large scale synthesis of near infrared emitting monodisperse silicon nanocrystals
Authors: Sun Wei , Qian Chenxi , Cui Xiao Sherri , Wang Liwei , Wei Muan , Casillas Gilberto , Helmy Amr S. , Ozin Geoffrey A.
Published: January 2016

The in-depth study of a convenient synthesis of NIR-emitting ncSi, requiring only thermal processing of commercial SiO. The size separation enabled the study of quantum size effects, pinpointing the most efficient PL wavelength.
Rhodium-catalyzed asymmetric ring opening reaction of oxabenzonorbornadienes with amines using ZnI2 as the activator
Authors: Xu Xin , Chen Jingchao , He Zhenxiu , Zhou Yongyun , Fan Baomin
Published: January 2016

The asymmetric ring opening reactions of oxabenzonorbornadienes with various amines were developed in high enantioselectivities with good yields by using a rhodium catalyst and ZnI2 as the activator.
4R- and 4S-iodophenyl hydroxyproline, 4R-pentynoyl hydroxyproline, and S-propargyl-4-thiolphenylalanine: conformationally biased and tunable amino acids for bioorthogonal reactions
Authors: Forbes Christina R. , Pandey Anil K. , Ganguly Himal K. , Yap Glenn P. A. , Zondlo Neal J.
Published: January 2016

4 Amino acids, incorporating aryl iodide or alkyne bioorthogonal functional groups, exhibit defined structural preferences, suggesting their molecularly tailored application.
Exploring the role of the α-carboxyphosphonate moiety in the HIV-RT activity of α-carboxy nucleoside phosphonates
Authors: Mullins Nicholas D. , Maguire Nuala M. , Ford Alan , Das Kalyan , Arnold Eddy , Balzarini Jan , Maguire Anita R.
Published: January 2016

The importance of the α-carboxy phosphonoacetic acid moiety to achieve RT inhibition, without the need for prior phosphorylation, is confirmed.
Activated anionic ring-opening polymerization for the synthesis of reversibly cross-linkable poly(propylene oxide) based on furan/maleimide chemistry
Authors: Roos Kévin , Dolci Elena , Carlotti Stéphane , Caillol Sylvain
Published: January 2016

Controlled anionic copolymerization of propylene oxide and furfuryl glycidyl ether was developed for the synthesis of reversibly cross-linkable polyethers.
Thioether-terminated nickel(ii) coordination clusters with {Ni6} horseshoe- and {Ni8} rollercoaster-shaped cores
Authors: Schmitz Sebastian , van Leusen Jan , Ellern Arkady , Kögerler Paul , Monakhov Kirill Yu.
Published: January 2016

We report two polynuclear nickel(ii) compounds whose supramolecular structures are controlled by small inorganic templating anions and π-conjugated Schiff-base ligands (L·SMe3− and HL·SMe2−) with peripheral, structurally exposed methylthioether groups.
Enhanced nonlinear optical properties of graphene oxide–silver nanocomposites measured by Z-scan technique
Authors: Biswas S. , Kole A. K. , Tiwary C. S. , Kumbhakar P.
Published: January 2016

Enhanced (by ∼2.8) nonlinear optical property of GO–Ag nanocomposite has been reported by Z-scan technique at a visible wavelength of 532 nm. The synthesized GO–Ag nanocomposite is also displaying significant optical limiting effect.
Synthesis and properties of pteridine-2,4-dione-functionalised oligothiophenes
Authors: Wiles Alan A. , Fitzpatrick Brian , McDonald Niall A. , Westwater Mary Margaret , Long De-Liang , Ebenhoch Bernd , Rotello Vincent M. , Samuel Ifor D. W. , Cooke Graeme
Published: January 2016

The synthesis of symmetrical acceptor-functionalised oligothiophenes is described and their electrochemical and optical properties are reported.
Broadband antireflective superhydrophobic self-cleaning coatings based on novel dendritic porous particles
Authors: Du Xin , Xing Yi , Li Xiaoyu , Huang Hongwei , Geng Zhi , He Junhui , Wen Yongqiang , Zhang Xueji
Published: January 2016

Novel dendritic porous particles were employed to fabricate broadband antireflective superhydrophobic self-cleaning coatings by facile dip-coating method.
Photosensitive self-assembling materials as functional dopants for organic photovoltaic cells
Authors: Bubnov Alexej , Iwan Agnieszka , Cigl Martin , Boharewicz Bartosz , Tazbir Igor , Wójcik Kamil , Sikora Andrzej , Hamplová Věra
Published: January 2016

New photosensitive liquid crystalline compounds with a specific molecular structure have been designed in order to use them as functional dopants for organic photovoltaic devices.
Enhanced electrochemical performance of morphology-controlled titania-reduced graphene oxide nanostructures fabricated via a combined anodization-hydrothermal process
Authors: Anitha V. C. , Hamnabard Nazanin , Banerjee Arghya Narayan , Dillip G. R. , Joo Sang Woo
Published: January 2016

Titania nanotubes is synthesized by an anodization process were used as a basic substrate material to create different morphologies of nanoribbon, nanoflake and nanoparticle structuresviaan alkali-controlled hydrothermal route.
Hierarchical porous nitrogen doping activated carbon with high performance for supercapacitor electrodes
Authors: Zeng Juan , Cao Qi , Jing Bo , Peng Xiuxiang
Published: January 2016

Hierarchical porous nitrogen doping activated carbon materials were designed and prepared by carbonization of electrospun composite carbon nanofibers and subsequent chemical activation.
Combinatorial synthesis of spiro[indoline-3,2′-pyrrole] derivatives via a three-component reaction under catalyst-free conditions
Authors: Shi Guanghao , He Xinwei , Shang Yongjia , Xie Meihua
Published: January 2016

Reported here is a convenient catalyst-free method for preparing a series of spiro[indoline-3,2′-pyrroles] from a three-component reaction of isatins, α-amino acid and phenylpropiolic acid esters in refluxing isopropanol with high regioselectivity and yields.
Multicomponent cascade reaction: dual role of copper in the synthesis of 1,2,3-triazole tethered benzimidazo[1,2-a]quinoline and their photophysical studies
Authors: Nagesh Hunsur Nagendra , Suresh Amaroju , Reddy Muthyala Nagarjuna , Suresh Narva , Subbalakshmi Jayanty , Chandra Sekhar Kondapalli Venkata Gowri
Published: January 2016

One-pot synthesis of 1,2,3-triazole tethered benzimidazo[1,2-a]quinolines through a multi-component reaction is demonstrated. Overall one C–C bond and three C–N bonds are formed in a single step.
Anion-controlled morphologies and photophysical features of organic microcrystals by solid-phase anion exchange reactions
Authors: Shen Chen , Yong Guo-Ping , Zhang Cong , Feng Ya
Published: January 2016

Anions play key roles in controlling the morphologies of organic microcrystals fabricated by simple and green solid-phase anion exchange reactions.
Synthesis of 3′-azido/-amino-xylobicyclonucleosides
Authors: Kumar Manish , Kumar Rajesh , Rana Neha , Prasad Ashok K.
Published: January 2016

Lipozyme® TL IM mediated the selective deacetylation of one of the two acetoxy groups in 4-C-acetoxymethyl-5-O-acetyl-3-azido-3-deoxy-1,2-O-isopropylidene-α-d-xylofuranose, leading to the first efficient syntheses of 3′-azido/3′-amino-xylobicyclonucleosides T, U, C and A.
Synthesis of a highly fluorescence nitrogen-doped carbon quantum dots bioimaging probe and its in vivo clearance and printing applications
Authors: Parvin Nargish , Mandal Tapas K.
Published: January 2016

Highly fluorescent, broad range pH and ionic-stable N-doped carbon quantum dots (N-CQDs) were successfully synthesized and their chemical structure and fluorescence mechanism were characterized.
Magnetic field enhanced upconversion luminescence and magnetic–optical hysteresis behaviors in NaYF4: Yb, Ho nanoparticles
Authors: Chen P. , Zhong Z. , Jia H. , Zhou J. , Han J. , Liu X. , Qiu J.
Published: January 2016

A magnetic field induces the enhancement of upconversion luminescence and magnetic–optical hysteresis behaviors in NaYF4: 20% Yb, 1% Ho nanoparticles.
Enhanced hydrogen production by methanol decomposition using a novel rotating gliding arc discharge plasma
Authors: Zhang Hao , Zhu Fengsen , Li Xiaodong , Cen Kefa , Du Changming , Tu Xin
Published: January 2016

Hydrogen production from methanol decomposition was performed in a novel direct current (DC) rotating gliding arc (RGA) plasma reactor.
Hydrothermal synthesis of novel BiFeO3/BiVO4 heterojunctions with enhanced photocatalytic activities under visible light irradiation
Authors: Fan Ting , Chen Changchun , Tang Zhonghai
Published: January 2016

BiFeO3/BiVO4 heterojunction photocatalysts were synthesized by a hydrothermal method.
Enhanced photovoltaic performance with co-sensitization of a ruthenium(ii) sensitizer and an organic dye in dye-sensitized solar cells
Authors: Mehmood Umer , Hussein Ibnelwaleed A. , Harrabi Khalil , Tabet Nouar , Berdiyorov G. R.
Published: January 2016

Co-sensitization is demonstrated to be an effective technique to enhance the efficiency of dye-sensitized solar cells, where an efficiency of 9.23% is achieved by mixing N3 and RK-1 dyes.
Benzo-thia-fused [n]thienoacenequinodimethanes with small to moderate diradical characters: the role of pro-aromaticity versus anti-aromaticity
Authors: Shi Xueliang , Quintero Estefanía , Lee Sangsu , Jing Linzhi , Herng Tun Seng , Zheng Bin , Huang Kuo-Wei , López Navarrete Juan T. , Ding Jun , Kim Dongho , Casado Juan , Chi Chunyan
Published: January 2016

Pro-aromaticThn-TIPSexhibits distinctly different physical properties from anti-aromaticSn-TIPS.
Osmotically-induced tension and the binding of N-BAR protein to lipid vesicles
Authors: Hutchison Jaime B. , Karunanayake Mudiyanselage Aruni P. K. K. , Weis Robert M. , Dinsmore Anthony D.
Published: January 2016

The binding affinity of a curvature-sensing protein domain (N-BAR) is measured as a function of applied osmotic stress while the membrane curvature is nearly constant.
Structure and cohesive energy of dipolar helices
Authors: Stanković Igor , Dašić Miljan , Messina René
Published: January 2016

A striking non-monotonic behavior is reported for the cohesive energy and ground state polarization order parameter as a function of the surface packing fraction. Comparative microstructures (A–F) are depicted on the right panel.
Synthesis, characterization and ab initio investigation of a panchromatic ullazine–porphyrin photosensitizer for dye-sensitized solar cells
Authors: Mathew Simon , Astani Negar Ashari , Curchod Basile F. E. , Delcamp Jared H. , Marszalek Magdalena , Frey Julien , Rothlisberger Ursula , Nazeeruddin Mohammad Khaja , Grätzel Michael
Published: January 2016

A panchromatic ullazine–porphyrin dye was synthesized, characterized and applied as a light harvester in dye-sensitized solar cells.
Tailoring of surface modified ultrathin membranes with CO2 tolerance and high oxygen permeability
Authors: He B. B. , Li G. , Gui L. Q. , Ling Y. H. , Zhao L.
Published: January 2016

We report our findings on Ce0.9Gd0.1O2−δ (GDC) modified (Pr0.9La0.1)2(Ni0.74Cu0.21Nb0.05)O4+δ (PLNCN) ultrathin membranes as highly efficient and CO2-stable oxygen transporting membranes (OTMs).
Fluidized bed electrodes with high carbon loading for water desalination by capacitive deionization
Authors: Doornbusch G. J. , Dykstra J. E. , Biesheuvel P. M. , Suss M. E.
Published: January 2016

The use of carbon flow electrodes has significantly impacted electrochemical energy storage and capacitive deionization (CDI). We here introduce flowable fluidized bed electrodes with exceptionally high carbon loading, and apply these to water desalination by CDI.
A layered drug nanovehicle toward targeted cancer imaging and therapy
Authors: Guan Shanyue , Liang Ruizheng , Li Chunyang , Yan Dan , Wei Min , Evans David G. , Duan Xue
Published: January 2016

A layered drug nanovehicle with superior anticancer performance was fabricated via the co-intercalation of doxorubicin (DOX) and folic acid (FA) into the gallery of layered double hydroxides (LDHs), which can be potentially applied in medical imaging/therapy.
Donor–acceptor organo-imido polyoxometalates: high transparency, high activity redox-active NLO chromophores
Authors: Al-Yasari Ahmed , Van Steerteghem Nick , El Moll Hani , Clays Koen , Fielden John
Published: January 2016

Organoimido polyoxometalates are a powerful new class of acceptor for non-linear optics. As a basis for donor–acceptor systems, they offer an excellent transparency/non-linearity trade-off and break through empirical performance limits for comparable organic materials.
Synthesis of 1,2-biphenylethane based single-molecule diodes
Authors: Galán Elena , Perrin Mickael L. , Lutz Martin , van der Zant Herre S. J. , Grozema Ferdinand C. , Eelkema Rienk
Published: January 2016

We have described the synthesis of novel biphenylethane-based wires for molecular electronics.
Characterization of deoxyribozymes with site-specific oxidative cleavage activity against DNA obtained by in vitro selection
Authors: Wang Ming-Qi , Dong Juan , Zhang Huafan , Tang Zhuo
Published: January 2016

We have generated a new class of deoxyribozymes that required Mn2+ and Cu2+ to catalyze a site-specific oxidative cleavage of DNA.
Correction: Selective capture of hexavalent chromium from an anion-exchange column of metal organic resin–alginic acid composite
Authors: Rapti Sofia , Pournara Anastasia , Sarma Debajit , Papadas Ioannis T. , Armatas Gerasimos S. , Tsipis Athanassios C. , Lazarides Theodore , Kanatzidis Mercouri G. , Manos Manolis J.
Published: January 2016

Correction for ‘Selective capture of hexavalent chromium from an anion-exchange column of metal organic resin–alginic acid composite’ by Sofia Rapti et al., Chem. Sci., 2016, DOI: 10.1039/c5sc03732h.
Preferential formation of columnar mesophases via peripheral modification of discotic π-systems with immiscible side chain pairs
Authors: Sakurai Tsuneaki , Tsutsui Yusuke , Kato Kenichi , Takata Masaki , Seki Shu
Published: January 2016

A molecular design strategy using immiscible side chain pairs enables discotic π-systems to preferentially form a columnar phase, avoiding the other phases involving thermodynamically unfavourable contacts between the immiscible chains.
Adaptive finite‐time consensus protocols for multi‐agent systems by using neural networks
Authors: Cai Mingjie , Xiang Zhengrong , Guo Jian
Published: January 2016

This study investigates the adaptive finite‐time consensus protocols for a class of second‐order multi‐agent systems with unknown non‐linear dynamics. Mainly due to the presence of more general unknown non‐linearities, the finite‐time consensus of multi‐agent systems is rather difficult to reach. Radial basis function neural networks are used to approximate the unknown functions. Under some appropriate assumptions, distributed consensus protocols and adaptive laws are designed for all agents. It is proved that the position errors and the velocity errors between any two agents converge to a small neighbourhood of the origin in finite time. Finally, an example of finite‐time consensus control for multiple robot systems is given to demonstrate the effectiveness of the proposed method.
Diverse videos synthesis using manifold‐based parametric motion model for facial understanding
Authors: Mohammadian Amin , Aghaeinia Hassan , Towhidkhah Farzad
Published: January 2016

Personal style is the cause of interpersonal variations, which play an important role in facial expression recognition. In this study, a model has been proposed to generate diverse sequences of virtual samples for a new subject. These sequences are thought to enrich the training set in order to increase robustness of recognition with respect to individual variations and improve generalisation to the new person. In the manifold‐based parametric motion model, the trajectory of the source person has been used to estimate and conduct the virtual facial expression vectors of the target person. In the recognition experiments, images are represented in the lower‐dimensional feature space, whereas the virtual vectors are generated in the feature space. The accuracy of the independent system shows the effectiveness of samples in improving the performance of the system based on the limited data of the new person. The accuracy of seven expressions is 90.65%, which is an improvement over the baseline model, which is 86.11%, and represents a significant (P < 0.05) improvement over the baseline method, which is 83.4%.
Semi‐conductors faults analysis in dual active bridge DC–DC converter
Authors: Airabella Andrés M. , Oggier Germán G. , Piris‐Botalla Laureano E. , Falco Cristian A. , García Guillermo O.
Published: January 2016

Failures in power semi‐conductors of a dual active bridge converter are characterised considering open‐circuit faults in diodes and transistors. A detailed electrical waveforms analysis to identify the main symptoms of the converter during normal and failure conditions is presented. Based on this analysis, a fault diagnosis strategy is proposed which is able to identify failures either in a diode or in a transistor as well as its location in the circuit. Finally, simulation and experimental results, using a prototype of 1 KW, are presented in this study to demonstrate the practical feasibility of the theoretical proposal.
Hausdorff separability of the boundaries for spacetimes and sequential spaces
Authors: Flores J. L. , Herrera J. , Sánchez M.
Published: January 2016

There are several ideal boundaries and completions in general relativity sharing the topological property of being sequential, i.e., determined by the convergence of its sequences and, so, by some limit operator L. As emphasized in a classical article by Geroch, Liang, and Wald, some of them have the property, commonly regarded as a drawback, that there are points of the spacetime M non-T1-separated from points of the boundary ∂M. Here, we show that this problem can be solved from a general topological viewpoint. In particular, there is a canonical minimum refinement of the topology in the completion M¯ which T2-separates the spacetime M and its boundary ∂M — no matter the type of completion one chooses. Moreover, we analyze the case of sequential spaces and show how the refined T2-separating topology can be constructed from a modification L∗ of the original limit operator L. Finally, we particularize this procedure to the case of the causal boundary and show how the separability of M and ∂M can be introduced as an abstract axiom in its definition.
Infrared radiative decay dynamics from the γ 1u (3P2), H 1u (3P1), and 1u (1D2) ion-pair states of I2 observed by a perturbation facilitated optical-optical double resonance technique
Authors: Hoshino Shoma , Araki Mitsunori , Nakano Yukio , Ishiwata Takashi , Tsukiyama Koichi
Published: January 2016

We report the spectroscopic and temporal analyses on the amplified spontaneous emission (ASE) from the single rovibrational levels of the Ω = 1u ion-pair series, γ 1u (3P2), H 1u (3P1), and 1u (1D2), of I2 by using a perturbation facilitated optical-optical double resonance technique through the c 1Πg∼B 3Π(0u+) hyperfine mixed valence state as the intermediate state. The ASE detected in the infrared region was assigned to the parallel transitions from the Ω = 1u ion-pair states down to the nearby Ω = 1g ion-pair states. The subsequent ultraviolet (UV) fluorescence from the Ω = 1g states was also observed and the relative vibrational populations in the Ω = 1g states were derived through the Franck-Condon simulation of the intensity pattern of the vibrational progression. In the temporal profiles of the UV fluorescence, an obvious delay in the onset of the fluorescence was recognized after the excitation laser pulse. These results revealed that ASE is a dominant energy relaxation process between the Ω = 1u and 1g ion-pair states of I2. Finally, the lifetimes of the relevant ion-pair states were evaluated by temporal analyses of the UV fluorescence. The propensity was found which was the longer lifetime in the upper level of the ASE transitions tends to give intense ASE.
Surface hopping investigation of the relaxation dynamics in radical cations
Authors: Assmann Mariana , Weinacht Thomas , Matsika Spiridoula
Published: January 2016

Ionization processes can lead to the formation of radical cations with population in several ionic states. In this study, we examine the dynamics of three radical cations starting from an excited ionic state using trajectory surface hopping dynamics in combination with multiconfigurational electronic structure methods. The efficiency of relaxation to the ground state is examined in an effort to understand better whether fragmentation of cations is likely to occur directly on excited states or after relaxation to the ground state. The results on cyclohexadiene, hexatriene, and uracil indicate that relaxation to the ground ionic state is very fast in these systems, while fragmentation before relaxation is rare. Ultrafast relaxation is facilitated by the close proximity of electronic states and the presence of two- and three-state conical intersections. Examining the properties of the systems in the Franck-Condon region can give some insight into the subsequent dynamics.
A new deflection technique applied to an existing scheme of electrostatic accelerator for high energy neutral beam injection in fusion reactor devices
Authors: Pilan N. , Antoni V. , De Lorenzi A. , Chitarin G. , Veltri P. , Sartori E.
Published: January 2016

A scheme of a neutral beam injector (NBI), based on electrostatic acceleration and magneto-static deflection of negative ions, is proposed and analyzed in terms of feasibility and performance. The scheme is based on the deflection of a high energy (2 MeV) and high current (some tens of amperes) negative ion beam by a large magnetic deflector placed between the Beam Source (BS) and the neutralizer. This scheme has the potential of solving two key issues, which at present limit the applicability of a NBI to a fusion reactor: the maximum achievable acceleration voltage and the direct exposure of the BS to the flux of neutrons and radiation coming from the fusion reactor. In order to solve these two issues, a magnetic deflector is proposed to screen the BS from direct exposure to radiation and neutrons so that the voltage insulation between the electrostatic accelerator and the grounded vessel can be enhanced by using compressed SF6 instead of vacuum so that the negative ions can be accelerated at energies higher than 1 MeV. By solving the beam transport with different magnetic deflector properties, an optimum scheme has been found which is shown to be effective to guarantee both the steering effect and the beam aiming.
Tunable chirality and circular dichroism of a topological insulator with C2v symmetry as a function of Rashba and Dresselhaus parameters
Authors: Sengupta Parijat , Bellotti Enrico
Published: January 2016

Polarization-sensitive devices rely on meta-materials to exhibit varying degrees of absorption of light of a given handedness. The chiral surface states of a topological insulator selectively absorb right- and left-circularly polarized light in the vicinity of the Dirac cone reaching its maximum of unity at the Γ point. In this letter, we show that a band gap open topological insulator with C2v symmetry, which is represented through a combination of Rashba and Dresselhaus Hamiltonians, alters the preferential absorption of left- and right-circularly polarized light allowing a smooth variation of the circular dichroism. This variation in circular dichroism, in a range of positive and negative values, is shown to be a function of the Rashba and Dresselhaus coupling parameters.
Influence of sample width on the magnetoresistance and planar Hall effect of Co/Cu multilayers
Authors: C. Lima S. , Baibich M. N.
Published: January 2016

We have studied Co/Cu multilayers to understand the effect of the sample's width on their magnetoresistance (MR). By keeping constant both the length and the thickness and exploring the widths within the range of usual magnetic domain sizes in those nanostructures, we were able to observe effects on the MR curve, as well as infer linked changes in the magnetization process. Associating MR and Planar Hall Effect (PHE) measurements, coupled to an analysis of the MR plots' symmetry, we were able to establish that, apart from the expected antiferromagnetic coupling, reducing the width forces the magnetization to stay aligned to the current channel, thus inducing more symmetric, closer to model Giant Magnetoresistance (GMR). Also, the sample edges might contribute by adding extra coupling through magnetostatic interaction. The added effects result in a counter-intuitive trend that goes from the near ideal wide samples through intermediate sizes with fairly abrupt changes in MR, and finally to the closer to bell-shaped ideal GMR at narrow widths.
Depth position detection for fast moving objects in sealed microchannel utilizing chromatic aberration
Authors: Lin Che-Hsin , Su Shin-Yu
Published: January 2016

This research reports a novel method for depth position measurement of fast moving objects inside a microfluidic channel based on the chromatic aberration effect. Two band pass filters and two avalanche photodiodes (APD) are used for rapid detecting the scattered light from the passing objected. Chromatic aberration results in the lights of different wavelengths focus at different depth positions in a microchannel. The intensity ratio of two selected bands of 430 nm–470 nm (blue band) and 630 nm–670 nm (red band) scattered from the passing object becomes a significant index for the depth information of the passing object. Results show that microspheres with the size of 20 μm and 2 μm can be resolved while using PMMA (Abbe number, V = 52) and BK7 (V = 64) as the chromatic aberration lens, respectively. The throughput of the developed system is greatly enhanced by the high sensitive APDs as the optical detectors. Human erythrocytes are also successfully detected without fluorescence labeling at a high flow velocity of 2.8 mm/s. With this approach, quantitative measurement for the depth position of rapid moving objects inside a sealed microfluidic channel can be achieved in a simple and low cost way.
Enhanced contactless dielectrophoresis enrichment and isolation platform via cell-scale microstructures
Authors: Čemažar Jaka , Douglas Temple A. , Schmelz Eva M. , Davalos Rafael V.
Published: January 2016

We designed a new microfluidic device that uses pillars on the same order as the diameter of a cell (20 μm) to isolate and enrich rare cell samples from background. These cell-scale microstructures improve viability, trapping efficiency, and throughput while reducing pearl chaining. The area where cells trap on each pillar is small, such that only one or two cells trap while fluid flow carries away excess cells. We employed contactless dielectrophoresis in which a thin PDMS membrane separates the cell suspension from the electrodes, improving cell viability for off-chip collection and analysis. We compared viability and trapping efficiency of a highly aggressive Mouse Ovarian Surface Epithelial (MOSE) cell line in this 20 μm pillar device to measurements in an earlier device with the same layout but pillars of 100 μm diameter. We found that MOSE cells in the new device with 20 μm pillars had higher viability at 350 VRMS, 30 kHz, and 1.2 ml/h (control 77%, untrapped 71%, trapped 81%) than in the previous generation device (untrapped 47%, trapped 42%). The new device can trap up to 6 times more cells under the same conditions. Our new device can sort cells with a high flow rate of 2.2 ml/h and throughput of a few million cells per hour while maintaining a viable population of cells for off-chip analysis. By using the device to separate subpopulations of tumor cells while maintaining their viability at large sample sizes, this technology can be used in developing personalized treatments that target the most aggressive cancerous cells.
Scattering study of the Ne + NeH+(v = 0, j = 0) → NeH+ + Ne reaction on an ab initio based analytical potential energy surface
Authors: Koner Debasish , Barrios Lizandra , González-Lezana Tomás , Panda Aditya N.
Published: January 2016

Initial state selected dynamics of the Ne + NeH+(v0 = 0, j0 = 0) → NeH+ + Ne reaction is investigated by quantum and statistical quantum mechanical (SQM) methods on the ground electronic state. The three-body ab initio energies on a set of suitably chosen grid points have been computed at CCSD(T)/aug-cc-PVQZ level and analytically fitted. The fitting of the diatomic potentials, computed at the same level of theory, is performed by spline interpolation. A collinear [NeHNe]+ structure lying 0.72 eV below the Ne + NeH+ asymptote is found to be the most stable geometry for this system. Energies of low lying vibrational states have been computed for this stable complex. Reaction probabilities obtained from quantum calculations exhibit dense oscillatory structures, particularly in the low energy region and these get partially washed out in the integral cross section results. SQM predictions are devoid of oscillatory structures and remain close to 0.5 after the rise at the threshold thus giving a crude average description of the quantum probabilities. Statistical cross sections and rate constants are nevertheless in sufficiently good agreement with the quantum results to suggest an important role of a complex-forming dynamics for the title reaction.