bluuebunny/crossref_metadata_2025 huggingface dataset:
Enhanced critical current density in the pressure-induced magnetic state of the high-temperature superconductor FeSe
Authors: Jung Soon-Gil , Kang Ji-Hoon , Park Eunsung , Lee Sangyun , Lin Jiunn-Yuan , Chareev Dmitriy A. , Vasiliev Alexander N. , Park Tuson
Published: November 2015

We investigate the relation of the critical current density (Jc) and the remarkably increased superconducting transition temperature (Tc) for the FeSe single crystals under pressures up to 2.43 GPa, where the Tc is increased by ~8 K/GPa. The critical current density corresponding to the free flux flow is monotonically enhanced by pressure which is due to the increase in Tc, whereas the depinning critical current density at which the vortex starts to move is more influenced by the pressure-induced magnetic state compared to the increase of Tc. Unlike other high-Tc superconductors, FeSe is not magnetic, but superconducting at ambient pressure. Above a critical pressure where magnetic state is induced and coexists with superconductivity, the depinning Jc abruptly increases even though the increase of the zero-resistivity Tc is negligible, directly indicating that the flux pinning property compared to the Tc enhancement is a more crucial factor for an achievement of a large Jc. In addition, the sharp increase in Jc in the coexisting superconducting phase of FeSe demonstrates that vortices can be effectively trapped by the competing antiferromagnetic order, even though its antagonistic nature against superconductivity is well documented. These results provide new guidance toward technological applications of high-temperature superconductors.
SENP1 desensitizes hypoxic ovarian cancer cells to cisplatin by up-regulating HIF-1α
Authors: Ao Qilin , Su Wenjing , Guo Shuang , Cai Lei , Huang Lei
Published: November 2015

Hypoxia-inducible factor 1 alpha (HIF-1α) is closely related to chemoresistance of ovarian cancers. Although it is reported that HIF-1α can be regulated by Sentrin/SUMO-specific protease 1 (SENP1), the effects of SENP1 on HIF-1α is still controversial. In this study, we identified that SENP1 positively regulated the expression of HIF-1α by deSUMOylation and weakened the sensitivity of hypoxic ovarian cancer cells to cisplatin. These results indicate that SENP1 is a positive regulator of HIF-1α and plays a negative role in ovarian cancer chemotherapy.
Transdifferentiation of periodontal ligament-derived stem cells into retinal ganglion-like cells and its microRNA signature
Authors: Ng Tsz Kin , Yung Jasmine S. Y. , Choy Kwong Wai , Cao Di , Leung Christopher K. S. , Cheung Herman S. , Pang Chi Pui
Published: November 2015

Retinal diseases are the leading causes of irreversible visual impairment and blindness in the developed countries. Human retina has limited regenerative power to replace cell loss. Stem cell replacement therapy has been proposed as a viable option. Previously, we have induced human adult periodontal ligament stem cells (PDLSCs) to the retinal lineage. In this study, we modified our induction protocol to direct human adult PDLSCs into retinal ganglion-like cells and determined the microRNA (miRNA) signature of this transdifferentiation process. The differentiated PDLSCs demonstrated the characteristics of functional neurons as they expressed neuronal and retinal ganglion cell markers (ATOH7, POU4F2, β-III tubulin, MAP2, TAU, NEUROD1 and SIX3), formed synapses and showed glutamate-induced calcium responses as well as spontaneous electrical activities. The global miRNA expression profiling identified 44 upregulated and 27 downregulated human miRNAs after retinal induction. Gene ontology analysis of the predicted miRNA target genes confirmed the transdifferentiation is closely related to neuronal differentiation processes. Furthermore, the expressions of 2 miRNA-targeted candidates, VEGF and PTEN, were significantly upregulated during the induction process. This study identified the transdifferentiation process of human adult stem cells into retinal ganglion-like cells and revealed the involvement of both genetic and miRNA regulatory mechanisms.
Metformin inhibits hepatocellular glucose, lipid and cholesterol biosynthetic pathways by transcriptionally suppressing steroid receptor coactivator 2 (SRC-2)
Authors: Madsen Andre , Bozickovic Olivera , Bjune Jan-Inge , Mellgren Gunnar , Sagen Jørn V.
Published: November 2015

The ability of the anti-diabetic drug metformin to inhibit anabolic processes including gluconeogenesis and lipogenesis is partly attributable to activation of the AMP-activated protein kinase (AMPK) pathway. The p160 steroid receptor coactivator 2 (SRC-2) is a key regulator of cellular metabolism and drives expression of the gluconeogenic enzyme glucose-6-phosphatase (G6Pc). Here, we uncovered a role for SRC-2 in the metabolic reprogramming imposed by metformin. In FaO cells, metformin dose-dependently reduced mRNA expression of SRC-2. Microarray analysis of metformin-treated cells revealed an overrepresentation of downregulated genes involved in biosynthesis of lipids and cholesterol. Several metformin-regulated genes including fatty acid synthase (FASN) were validated as transcriptional targets of SRC-2 with promoters characterized by sterol regulatory element (SRE) binding protein (SREBP) recognition sequences. Transactivation assays of the FASN promoter confirmed that SRC-2 is a coactivator of SREBP-1. By suppressing SRC-2 at the transcriptional level, metformin impeded recruitment of SRC-2 and RNA polymerase II to the G6Pc promoter and to SREs of mutual SRC-2/SREBP-1 target gene promoters. Hepatocellular fat accretion was reduced by metformin or knock-down of both SRC-2 and SREBP-1. Accordingly we propose that metformin inhibits glucose and lipid biosynthesis partly by downregulating SRC-2 gene expression.
The Biarzo case in northern Italy: is the temporal dynamic of swine mitochondrial DNA lineages in Europe related to domestication?
Authors: Vai Stefania , Vilaça Sibelle Torres , Romandini Matteo , Benazzo Andrea , Visentini Paola , Modolo Marta , Bertolini Marco , MacQueen Peggy , Austin Jeremy , Cooper Alan , Caramelli David , Lari Martina , Bertorelle Giorgio
Published: November 2015

Genetically-based reconstructions of the history of pig domestication in Europe are based on two major pillars: 1) the temporal changes of mitochondrial DNA lineages are related to domestication; 2) Near Eastern haplotypes which appeared and then disappeared in some sites across Europe are genetic markers of the first Near Eastern domestic pigs. We typed a small but informative fragment of the mitochondrial DNA in 23 Sus scrofa samples from a site in north eastern Italy (Biarzo shelter) which provides a continuous record across a ≈6,000 year time frame from the Upper Palaeolithic to the Neolithic. We additionally carried out several radiocarbon dating. We found that a rapid mitochondrial DNA turnover occurred during the Mesolithic, suggesting that substantial changes in the composition of pig mitochondrial lineages can occur naturally across few millennia independently of domestication processes. Moreover, so-called Near Eastern haplotypes were present here at least two millennia before the arrival of Neolithic package in the same area. Consequently, we recommend a re-evaluation of the previous idea that Neolithic farmers introduced pigs domesticated in the Near East and that Mesolithic communities acquired domestic pigs via cultural exchanges, to include the possibility of a more parsimonious hypothesis of local domestication in Europe.
Phase boundary of hot dense fluid hydrogen
Authors: Ohta Kenji , Ichimaru Kota , Einaga Mari , Kawaguchi Sho , Shimizu Katsuya , Matsuoka Takahiro , Hirao Naohisa , Ohishi Yasuo
Published: November 2015

We investigated the phase transformation of hot dense fluid hydrogen using static high-pressure laser-heating experiments in a laser-heated diamond anvil cell. The results show anomalies in the heating efficiency that are likely to be attributed to the phase transition from a diatomic to monoatomic fluid hydrogen (plasma phase transition) in the pressure range between 82 and 106 GPa. This study imposes tighter constraints on the location of the hydrogen plasma phase transition boundary and suggests higher critical point than that predicted by the theoretical calculations.
A method developed to fractionate intact proteins based on capillary electrophoresis
Authors: Fu Xia , Xiao Hongting , Liang Shuang , Bao James J. , Li Tianxiang , Zhang Yong
Published: November 2015

A velocity gap mode of capillary electrophoresis (VGCE) method is proposed for the fractionation of mixed proteins which shows great potential to couple with MS for the top-down analysis of complex mixtures.
Elucidation of the resting state of a rhodium NNN-pincer hydrogenation catalyst that features a remarkably upfield hydride 1H NMR chemical shift
Authors: Hänninen Mikko M. , Zamora Matthew T. , MacNeil Connor S. , Knott Jackson P. , Hayes Paul G.
Published: November 2015

Rhodium(i) alkene complexes of an NNN-pincer ligand catalyze the hydrogenation of alkenes. The terminal or resting state of the catalyst, which exhibits an unusually upfield Rh–hydride 1H NMR chemical shift, has been identified.
A singlet oxygen photosensitizer enables photoluminescent monitoring of singlet oxygen doses
Authors: You Youngmin , Cho Eun Jin , Kwon Hyeokseon , Hwang Jieun , Lee Seung Eun
Published: November 2015

Dichromophoric molecular dyad enables photosensitization and detection of sinlget oxygen.
A hierarchically porous anatase TiO2 coated-WO3 2D IO bilayer film and its photochromic properties
Authors: Li Hua , Wu Huazhong , Xiao Jiajia , Su Yanli , Robichaud Jacques , Brüning Ralf , Djaoued Yahia
Published: November 2015

A bilayer film composed of hierarchically porous anatase TiO2 coated on the WO3 2D-IO monolayer was designed and prepared on ITO glass using a layer by layer route.
Quantum interferences in the photodissociation of Cl2(B) in superfluid helium nanodroplets (4He)N
Authors: Vilà Arnau , González Miguel , Mayol Ricardo
Published: November 2015

The origin of quantum interferences theoretically found in the photodissociation of chlorine in superfluid4He nanodroplets was investigated in detail.
Improved catalytic performance of encapsulated Ru nanowires for aqueous-phase Fischer–Tropsch synthesis
Authors: Lan Guojun , Yao Yi , Zhang Xiaoming , Guo Miao , Tang Haodong , Li Ying , Yang Qihua
Published: November 2015

Ru–PVP nanowires encapsulated in ethane–silica hollow nanospheres could efficiently and steadily catalyze liquid-phase F–T synthesis with higher activity (activity: 6.35 versus 5.96 molCO mol−1Ru h−1) and selectivity towards oxygenate products (41.3 versus 21.6%) than free Ru–PVP.
Superior performance of mesoporous tin oxide over nano and bulk forms in the activation of a carbonyl group: conversion of bio-renewable feedstock
Authors: Marakatti Vijaykumar S. , Manjunathan Pandian , Halgeri Anand B. , Shanbhag Ganapati V.
Published: November 2015

The efficiency of mesoporous tin oxide as an acid catalyst in the activation of a carbonyl group through selected organic transformations involving the conversion of biomass derived molecules to value-added chemicals is reported.
Microporous crystalline Mo–V mixed oxides for selective oxidations
Authors: Ishikawa Satoshi , Ueda Wataru
Published: November 2015

Recent developments of crystalline Mo3VOx catalysts (MoVO), a new type of oxidation catalysts for selective oxidations of ethane to ethene and of acrolein to acrylic acid, are reviewed.
CdS quantum dots and tungsten carbide supported on anatase–rutile composite TiO2 for highly efficient visible-light-driven photocatalytic H2 evolution from water
Authors: Pan Yun-xiang , Zhou Tianhua , Han Jianyu , Hong Jindui , Wang Yabo , Zhang Wei , Xu Rong
Published: November 2015

A noble-metal-free CdS/WC/TiO2 photocatalyst with water-soluble CdS quantum dots (<5 nm) and anatase–rutile composite TiO2 is highly efficient for H2 evolution from visible-light-driven photocatalytic water reduction.
Organometallic rhodium(iii) and iridium(iii) cyclopentadienyl complexes with curcumin and bisdemethoxycurcumin co-ligands
Authors: Pettinari Riccardo , Marchetti Fabio , Pettinari Claudio , Condello Francesca , Petrini Agnese , Scopelliti Rosario , Riedel Tina , Dyson Paul J.
Published: November 2015

Rhodium(iii) and iridium(iii) complexes containing curcumin ligands show moderate cytotoxicity to human ovarian carcinoma cells and also to non-tumorigenic human embryonic kidney cells.
Flexible MOFs under stress: pressure and temperature
Authors: Clearfield Abraham
Published: November 2015

In the recent past an enormous number of Metal–Organic Framework type compounds (MOFs) have been synthesized.
Comprehending the effect of MMoO4(M = Co, Ni) nanoflakes on improving the electrochemical performance of NiO electrodes
Authors: An Lei , Li Wenyao , Cao Yunjiu , Xu Kaibing , Zou Rujia , Ji Tao , Yu Li , Hu Junqing
Published: November 2015

The hierarchical heterostructures of a NiO@MMoO4(M = Co, Ni) nanosheet array electrode demonstrated remarkable electrochemical performance with a high specific capacitance and predominant cycling stability.
Pyrene-biimidazole based Ru(ii) and Os(ii) complexes as highly efficient probes for the visible and near-infrared detection of cyanide in aqueous media
Authors: Mardanya Sourav , Karmakar Srikanta , Bar Manoranjan , Baitalik Sujoy
Published: November 2015

Pyrenyl-biimidazole based Ru(ii) and Os(ii) complexes are used as highly efficient cyanide sensors in aqueous media.
Toward highly efficient blue organic light-emitting diodes: fabricating a good-quality emissive layer cast from suitable solvents
Authors: Ma Dongxin , Duan Lian , Qiu Yong
Published: November 2015

Cast from chlorobenzene, a light-emitting layer shows its best morphology and highest efficiency of 18.99 cd A−1 in single-layer FIrpic-based OLEDs.
Unusual borane addition to conjugated dienylphosphanes under frustrated Lewis pair conditions
Authors: Krupski Sergei , Kehr Gerald , Daniliuc Constantin G. , Erker Gerhard
Published: November 2015

Dimesitylphosphinoisoprene reacts with a series of R-B(C6F5)2 boron Lewis acids by isomerization and subsequent 1,4-P/B addition to give the corresponding heterocyclic phosphonium/borate zwitterionic products.
Reversible formation of supramolecular polymer networks via orthogonal pillar[10]arene-based host–guest interactions and metal ion coordinations
Authors: Wu Lintao , Han Chun , Wu Xi , Wang Lei , Caochen Yaozi , Jing Xiaobi
Published: November 2015

Reversible supramolecular polymer networks were constructed by orthogonal pillar[10]arene-based host–guest molecular recognition, terpyridine–Zn2+, and carbene–Ag+ coordinations.
Porphyrins bearing a consolidated anthryl donor with dual functions for efficient dye-sensitized solar cells
Authors: Wang Chin-Li , Zhang Min , Hsiao Yu-Hsin , Tseng Chuan-Kai , Liu Chia-Lin , Xu Mingfei , Wang Peng , Lin Ching-Yao
Published: November 2015

Efficient DSSC performance was achieved by using a porphyrin dye bearing a consolidated anthryl donor which provides both electron-donating and absorption-broadening effects.
Ionic liquid gel materials: applications in green and sustainable chemistry
Authors: Marr Patricia C. , Marr Andrew C.
Published: November 2015

Ionic liquid gel materials offer a way to further utilise ionic liquids in technological applications. Combining the controlled and directed assembly of gels, with the diverse applications of ionic liquids, enables the design of a heady combination of functional tailored materials, leading to the development of task specific/functional ionic liquid gels.
Correction: A solvent selection guide based on chemometrics and multicriteria decision analysis
Authors: Tobiszewski Marek , Tsakovski Stefan , Simeonov Vasil , Namieśnik Jacek , Pena-Pereira Francisco
Published: November 2015

Correction for ‘A solvent selection guide based on chemometrics and multicriteria decision analysis’ by Marek Tobiszewski et al., Green Chem., 2015, 17, 4773–4785.
A deterministic oscillatory model of microtubule growth and shrinkage for differential actions of short chain fatty acids
Authors: Kilner Josephine , Corfe Bernard M. , McAuley Mark T. , Wilkinson Stephen J.
Published: November 2015

Short-chain fatty acids have distinct effects on cytoskeletal proteins at the level of expression and organisation. We report a new oscillatory, deterministic model which accounts for different actions and predicts response according to fatty acid chain length.
Highly efficient integration of the viral portal proteins from different types of phages into planar bilayers for the black lipid membrane analysis
Authors: Jing Peng , Paraiso Hallel , Burris Benjamin
Published: November 2015

An effective method used to prepare fusible proteoliposomes reconstituted with phage portal proteins for the black lipid membrane analysis.
Red–green–blue laser emission from cascaded polymer membranes
Authors: Zhai Tianrui , Wang Yonglu , Chen Li , Wu Xiaofeng , Li Songtao , Zhang Xinping
Published: November 2015

Red–green–blue polymer laser emission is achieved in a free-standing membrane device consisting of three distributed feedback cavities.
Synthesis and self-organization of azobenzene containing hemiphasmidic side-chain liquid-crystalline polymers with different spacer lengths
Authors: Xu Yan-Shuang , Shi Dong , Gu Jun , Lei Zhen , Xie He-Lou , Zhao Ti-Peng , Yang Shuang , Chen Er-Qiang
Published: November 2015

Hemiphasmidic side-chain liquid-crystal polymers form different columnar phases depending on the spacer lengthnand temperatureT.
Turning into poly(ionic liquid)s as a tool for polyimide modification: synthesis, characterization and CO2 separation properties
Authors: Shaplov Alexander S. , Morozova Sofia M. , Lozinskaya Elena I. , Vlasov Petr S. , Gouveia Andreia S. L. , Tomé Liliana C. , Marrucho Isabel M. , Vygodskii Yakov S.
Published: November 2015

A synthetic method for the transformation of polyimides into poly(ionic liquid)s with improved properties is suggested.
Continuous flow SET-LRP in the presence of P(VDF-co-CTFE) as macroinitiator in a copper tubular reactor
Authors: Zhu Ning , Hu Xin , Zhang Yajun , Zhang Kai , Li Zhenjiang , Guo Kai
Published: November 2015

A green, highly effective and energy-saving route to the grafting modification of P(VDF-co-CTFE) was developedviacontinuous flow SET-LRP with significant advantages over batch reactors.
Mechanistic insights of SrtA–LPXTG blockers targeting the transpeptidase mechanism in Streptococcus mutans
Authors: Selvaraj Chandrabose , Priya Ramanathan Bharathi , Lee Jung-Kul , Singh Sanjeev Kumar
Published: November 2015

The SrtA–LPXTG interaction plays a key role in transpeptidation reaction, cell wall and biofilm formations. This study explains the blocking of LEU interactions with SrtA will results as SrtA inhibitors through MD simulation and energy calculations methods.
Development of a multifunctional TiO2/MWCNT hybrid composite grafted on a stainless steel grating
Authors: Cravanzola Sara , Jain Sagar M. , Cesano Federico , Damin Alessandro , Scarano Domenica
Published: November 2015

A multifunctional TiO2/MWCNT hybrid material grafted on durable and thermally inert stainless-steel grating is proposed, thus combining photodegradation with magnetic properties, which makes the recovery of a solution from a photocatalyst easier.
Theranostic carbon dots derived from garlic with efficient anti-oxidative effects towards macrophages
Authors: Yang Chuanxu , Ogaki Ryosuke , Hansen Line , Kjems Jørgen , Teo Boon Mian
Published: November 2015

Luminescent garlic carbon dots with superior photostability are synthesizedviamicrowave assisted heating.
Controlled protein separation based on pressure–voltage (P–V) coupling effects in a nanopore based device
Authors: Liu Lei , Ma Bin
Published: November 2015

A U-type device containing two cells connected by nanopore arrays was designed for controlled protein separation. By finding P–V equilibrium points for BSA and Hb, the separation ratios can be achieved as BSA : Hb = 12.5 and Hb : BSA = 14.3.
Fabrication of ZnIn2S4–g-C3N4 sheet-on-sheet nanocomposites for efficient visible-light photocatalytic H2-evolution and degradation of organic pollutants
Authors: Liu Hong , Jin Zhitong , Xu Zhengzheng , Zhang Zhe , Ao Dan
Published: November 2015

Novel ZnIn2S4–g-C3N4 sheet-on-sheet nanocomposites with excellent photocatalytic activities have been synthesized by a facile hydrothermal method.
Architecture of modified silica resin coatings with various micro/nano patterns for fouling resistance: microstructure and antifouling performance
Authors: Chen Zifei , Zhao Wenjie , Mo Mengting , Zhou Chengxu , Liu Gang , Zeng Zhixiang , Wu Xuedong , Xue Qunji
Published: November 2015

A series of modified silicone surfaces with different textures, shapes and surface roughnesses were fabricated. Those with sizes smaller than algae were effective in inhibiting N. closterium, P. tricornutum and Chlorella with reduction ratios of 49%, 75% and 81%.
Controllable growth of organic nanostructures from 0D to 1D with different optical properties
Authors: Luo Yusen , Xue Zheng , Li Yongjun , Liu Huibiao , Yang Wensheng , Li Yuliang
Published: November 2015

Controllable nano/microstructures from 0D to 1D were fabricated by adjusting the growth rate. The difference in symmetry between two molecules results in distinct self-assembly behaviours and different optical properties.
Dual-compartment nanofibres: separation of two highly reactive components in close vicinity
Authors: Bijlard Ann-Christin , Kaltbeitzel Anke , Avlasevich Yuri , Crespy Daniel , Hamm Marc , Landfester Katharina , Taden Andreas
Published: November 2015

Nanofibers based on polyvinyl alcohol encapsulating epoxy and amine colloids in close vicinity as reactive compartments are investigated. Their crosslinking can be initiated upon thermal or mechanical stimuli and enables self-healing applications.
Initial reduction of CO2 on perfect and O-defective CeO2 (111) surfaces: towards CO or COOH?
Authors: Lu Xiaoqing , Wang Weili , Wei Shuxian , Guo Chen , Shao Yang , Zhang Mingmin , Deng Zhigang , Zhu Houyu , Guo Wenyue
Published: November 2015

CO2 hydrogenation towards COOH is more favorable on perfect CeO2 (111) surface, whereas reductive dissociation of CO2 is predominant on O-defective surface. The O vacancy promotes reductive dissociation of CO2 on O-defective CeO2 (111) surface.
Controlled convective self-assembly of silver nanoparticles in volatile organic solvent and its application in electronics
Authors: Jiang Chengpeng , Li Li , Pong Philip W. T.
Published: November 2015

A controlled convective self-assembly approach is reported for producing conductive coatings and patterns using ultra-small Ag nanoparticles in volatile solvents.
Solid transformation synthesis of zeolites from fly ash
Authors: Xiao Min , Hu Xiaojun , Gong Yan , Gao Dan , Zhang Peng , Liu Qixin , Liu Yue , Wang Muchi
Published: November 2015

The solid transformation method was used to synthesize zeolites from fly ash (FA).
Fluorometric sensing of Pb2+and CrO42−ions through host–guest inclusion for human lung cancer live cell imaging
Authors: Mohandoss Sonaimuthu , Sivakamavalli Jeyachandran , Vaseeharan Baskaralingam , Stalin Thambusamy
Published: November 2015

The formation of an inclusion complex between 1,5-dihydroxyanthraquinone (1,5-DHAQ;1) and β-cyclodextrin (β-CD) in aqueous media has been studied by UV-visible and fluorescence spectroscopy.
Facile synthesis of composition and morphology modulated quaternary CuZnFeS colloidal nanocrystals for photovoltaic application
Authors: Dalui Amit , Khan Ali Hossain , Pradhan Bapi , Pradhan Jayita , Satpati Biswarup , Acharya Somobrata
Published: November 2015

Quaternary semiconductor CuZnFeS nanocrystals with controlled size, shape and composition have been successfully synthesized and utilized to fabricate photovoltaic and photosensitive devices.
Facile synthesis of cysteine–functionalized graphene quantum dots for a fluorescence probe for mercury ions
Authors: Tam Tran Van , Hong Soon Ho , Choi Won Mook
Published: November 2015

We synthesized cystenine–functionalized graphene quantum dots (cys–GQDs) by a simple, low cost and environmentally friendly method and demonstrated them as highly sensitive and selective fluorescence probes for Hg2+ detection.
Mechanism of cement paste reinforced by graphene oxide/carbon nanotubes composites with enhanced mechanical properties
Authors: Lu Zeyu , Hou Dongshuai , Meng Lingshi , Sun Guoxing , Lu Cong , Li Zongjin
Published: November 2015

This paper presented the enhanced mechanical properties of cement paste reinforced by graphene oxide (GO)/carbon nanotubes (CNTs) composites. The space interlocking mechanism of the GO/CNTs/cement paste composite was proposed.
Efficient tailoring of the surface of upconversion nanoparticles via surface-initiated cationic ring-opening polymerization
Authors: He Benzhao , Zhou Li
Published: November 2015

This paper present for the first time that cationic ring-opening polymerization technique can be employed as an effective tool to decorate the upconversion nanoparticles (UCNPs) with diverse polymers so as to endow the UCNPs with desired properties.
Liponitroxides: EPR study and their efficacy as antioxidants in lipid membranes
Authors: Mobbili Giovanna , Crucianelli Emanuela , Barbon Antonio , Marcaccio Massimo , Pisani Michela , Dalzini Annalisa , Ussano Eleonora , Bortolus Marco , Stipa Pierluigi , Astolfi Paola
Published: November 2015

Fighting lipid peroxidation on its own ground: the antioxidant activity of new synthesized lipid-functionalized nitroxides is maximized in the PUFA region and correlates with the nitroxide location within the lipid bilayer as found by EPR spectroscopy.
Metabolomics-based screening of salivary biomarkers for early diagnosis of Alzheimer's disease
Authors: Liang Qun , Liu Han , Zhang Tianyu , Jiang Yan , Xing Haitao , Zhang Ai-hua
Published: November 2015

Early diagnosis of Alzheimer's disease (AD) is an attractive strategy to increase the survival rate of patients.
A unique route to fabricate mesoporous carbon with abundant ferric species as a heterogeneous Fenton catalyst under neutral conditions
Authors: Wang Min , Zhang Lingxia , Fan Xiangqian , Zhou Yajun , Chen Lisong , Kong Qinglu , Shi Jianlin
Published: November 2015

A unique approach combining physical vapor infiltration with synchronous hard templating replication has been developed to prepare mesoporous carbon with abundant and highly dispersed ferric species, by using ferrocene as a single source for both carbon and iron.
Three-dimensionally ordered macroporous LaMnO3 with tunable oxygen vacancies via nitric acid-aided modulating and their catalytic combustion properties
Authors: Yang Renchun , Lu Xiaojia , Zhang Zhihua , Wang Xiuxiang , Tang Dingxing , Zhu Lingting
Published: November 2015

Three-dimensionally ordered macroporous (3DOM) LaMnO3 oxides with tunable oxygen vacancies have been successfully fabricated via a facile nitric acid-aided modulating sol–gel method.
Tuning of the double-well potential of short strong hydrogen bonds by ionic interactions in alkali metal hydrodicarboxylates
Authors: Ananyev I. V. , Bushmarinov I. S. , Ushakov I. E. , Aitkulova A. I. , Lyssenko K. A.
Published: November 2015

The influence of the cation nature on the peculiarities of short strong H-bonds within hydrocarboxylate crystals is revealed.
Hydrogen peroxide treated graphene as an effective nanosheet filler for separation application
Authors: Suhas Dharupaneedi P. , Aminabhavi Tejraj M. , Jeong Han M. , Raghu Anjanapura V.
Published: November 2015

In this research, H2O2 treated graphene was used as a nanofiller in a chitosan–poly(vinyl pyrrolidone) blend matrix to develop membranes that were tested for PV dehydration of ethanol as a function of filler loading, feed composition and temperature.
A copper-catalyzed domino reaction to construct functionalized indolizinones
Authors: Hu Ben-Quan , Wang Li-Xia , Shen Gang , Tang Ya-Lin , Yang Luo
Published: November 2015

An efficient one-step copper-catalyzed domino reaction to 3,8α-disubstituted indolizinone derivatives has been developed for the first time, in which cheap and readily available pyridine ketones and terminal alkynes are the starting materials.
Synthesis and anisotropic self-assembly of Ag nanoparticles immobilized by the Pluronic F127 triblock copolymer for colorimetric detection of H2O2
Authors: Wu Cong , Xia Guangmei , Sun Jing , Song Rui
Published: November 2015

Facile and green synthesis of a Ag@DA@F127 system for the sensitive and quantitative detection of H2O2. Ag NPs in the network-like F127 micelles were well-dispersed and anisotropically self-assembled.
One-pot synthesis of a three-dimensional graphene aerogel supported Pt catalyst for methanol electrooxidation
Authors: Zhao Lei , Wang Zhen-Bo , Li Jia-Long , Zhang Jing-Jia , Sui Xu-Lei , Zhang Li-Mei
Published: November 2015

A Pt/graphene aerogel hybrid catalyst synthesized via a facile one-pot solvothermal method exhibits 2.86 times higher activity for methanol electrooxidation than that of Pt/graphene and the stability is improved by 10% as compared with Pt/graphene.
Structure, luminescence property and abnormal energy transfer behavior of color-adjustable Ca3Hf2SiAl2O12:Ce3+,Mn2+ phosphors
Authors: Ding Xin , Geng Wanying , Wang Qian , Wang Yuhua
Published: November 2015

A series of color-adjustable phosphors Ca3Hf2SiAl2O12:Ce3+,Mn2+ were synthesized. Its structure, luminescence property and abnormal energy transfer behavior were investigated.
Arene-based fluorescent probes for the selective detection of iron
Authors: Kumar Pramod , Kumar Vijay , Gupta Rajeev
Published: November 2015

Amide based probes containing phenyl (L1), naphthyl (L2) and anthracenyl (L3) groups were screened towards metal ions. Probes L2 and L3 display sensing for Fe2+ and Fe3+ ions. The L3–Fe3+ system is shown to have potential applications in logic gates and cell imaging.
Study on the interface electronic states of chemically modified ZnO nanowires
Authors: Wang Lei , Li Rui , Feng Lu , Liu Jifeng , Gao Xuexi , Wang Wenjun
Published: November 2015

In this work, ZnO nanowires were modified with three mercaptans.
Confinement effects of graphene oxide nanosheets on liquid–solid phase transition of water
Authors: Zokaie Meymanat , Foroutan Masumeh
Published: November 2015

In this work, the liquid–solid phase transition temperature of water confined between two graphene oxide (GO) sheets is investigated using molecular dynamics simulations.
Developing efficient heavy-atom-free photosensitizers applicable to TTA upconversion in polymer films
Authors: Peng Jiang , Guo Xinyan , Jiang Xinpeng , Zhao Dahui , Ma Yuguo
Published: November 2015

Heavy-atom-free triplet photosensitizers are developed and visible-to-ultraviolet photon upconversion is realized via triplet–triplet annihilation.
Cationic porphyrins are tunable gatekeepers of the 20S proteasome
Authors: Santoro Anna M. , Cunsolo Alessandra , D'Urso Alessandro , Sbardella Diego , Tundo Grazia R. , Ciaccio Chiara , Coletta Massimiliano , Diana Donatella , Fattorusso Roberto , Persico Marco , Di Dato Antonio , Fattorusso Caterina , Milardi Danilo , Purrello Roberto
Published: November 2015

Three homologous cationic porphyrins differently affect the 20S proteasome gating mechanism.
Sulfoxide-directed metal-free cross-couplings in the expedient synthesis of benzothiophene-based components of materials
Authors: Eberhart Andrew J. , Shrives Harry , Zhang Yuntong , Carrër Amandine , Parry Adam V. S. , Tate Daniel J. , Turner Michael L. , Procter David J.
Published: November 2015

A metal-free approach combining sulfoxide-directed metal-free C–H cross-couplings with tuneable heterocyclizations and dimerizations allows expedient access to important organic materials.
Effect of the N content of Fe/N/graphene catalysts for the oxygen reduction reaction in alkaline media
Authors: Domínguez Carlota , Pérez-Alonso F. J. , Salam Mohamed Abdel , Al-Thabaiti Shaeel A. , Peña Miguel A. , Barrio L. , Rojas S.
Published: November 2015

The ORR activity of Fe/N/G is a balance between the N-content and BET area.
Development of MgAl2O4-stabilized, Cu-doped, Fe2O3-based oxygen carriers for thermochemical water-splitting
Authors: Imtiaz Q. , Yüzbasi N. S. , Abdala P. M. , Kierzkowska A. M. , van Beek W. , Broda M. , Müller C. R.
Published: November 2015

The commercially dominating technology for hydrogen production (i.e. steam methane reforming) emits large quantities of CO2 into the atmosphere. On the other hand, thermochemical water-splitting cycles allow to produce high purity H2 while simultaneously capturing CO2.
The position and frequency of fluorine atoms changes the electron donor/acceptor properties of fluorophenoxy silicon phthalocyanines within organic photovoltaic devices
Authors: Lessard Benoît H. , Grant Trevor M. , White Robin , Thibau Emmanuel , Lu Zheng-Hong , Bender Timothy P.
Published: November 2015

Novel silicon phthalocyanines (SiPcs) were characterized and applied within organic photovoltaic (OPV) devices as electron acceptor or electron donor layers.
Facile and scalable production of three-dimensional spherical carbonized bacterial cellulose/graphene nanocomposites with a honeycomb-like surface pattern as potential superior absorbents
Authors: Wan Yizao , Zhang Fangshan , Li Chunzhi , Xiong Guangyao , Zhu Yong , Luo Honglin
Published: November 2015

A novel sphere-like carbonized bacterial cellulose/graphene nanocomposite with a honeycomb-like surface morphology and a three-dimensional (3D) porous structure was synthesizedviaa facile and scalable one-potin situbiosynthesis route and carbonization.
Improving the electrochemical properties of the red P anode in Na-ion batteries via the space confinement of carbon nanopores
Authors: Wu Na , Yao Hu-Rong , Yin Ya-Xia , Guo Yu-Guo
Published: November 2015

By encapsulating red P into a special hierarchical porous carbon (HPC) substrate with 2 nm pores, the P@HPC composite no longer involves huge pulverization during sodiation/desodiation but is provided with improved cycling stability (the capacity retention > 88% after 200 cycles).
Ag-nanogel blended polymeric membranes with antifouling, hemocompatible and bactericidal capabilities
Authors: Xia Yi , Cheng Chong , Wang Rui , Nie Chuanxiong , Deng Jie , Zhao Changsheng
Published: November 2015

A highly efficient, universal and convenient protocol is reported to fabricate antifouling, hemocompatible, and bactericidal membranes by physically blending of antifouling nanogels and in situ silver nanoparticles immobilization.
Engineering gate dielectric surface properties for enhanced polymer field-effect transistor performance
Authors: Lei Yanlian , Wu Bo , Chan Wing-Kin Edward , Zhu Furong , Ong Beng S.
Published: November 2015

A high-performance “hybrid” dual-silane SAM enables the attainment of both a high mobility and on/off ratio, together with other desirable FET properties.
Tuning BODIPY molecular rotors into the red: sensitivity to viscosity vs. temperature
Authors: Vu Thanh Truc , Méallet-Renault Rachel , Clavier Gilles , Trofimov Boris A. , Kuimova Marina K.
Published: November 2015

We demonstrate that red emitting BODIPY dyes structurally similar to ‘molecular rotors’ are sensitive to environmental temperature rather than viscosity.
Spectral shifting of speaker‐specific information for narrow band telephonic speaker recognition
Authors: Thiruvaran T. , Sethu V. , Ambikairajah E. , Li H.
Published: November 2015

Speech‐based authentication system can perform remote authentication over telephone channels. However, telephone channels are restricted to a bandwidth of ∼0–4 kHz while studies on the distribution of speaker‐specific information in the speech spectrum strongly suggests that useful speaker‐specific information is present above 4 kHz. A method to shift a part of this speaker‐specific information above 4 kHz into the telephone bandwidth in place of less speaker‐specific information originally present below 4 kHz is proposed. Speaker recognition experiments conducted using the proposed method leads to ∼18.5% relative improvement on equal error rate when compared to a system using the conventional telephone band speech, as evaluated on the Intelligence Advanced Research Projects Activity (IARPA) Babel Program Tamil language collection.
Low ohmic‐contact resistance in AlGaN/GaN high electron mobility transistors with holes etching in ohmic region
Authors: Wang Chong , He Yunlong , Zheng Xuefeng , Zhao Mengdi , Mi Minhan , Li Xiangdong , Mao Wei , Ma Xiaohua , Hao Yue
Published: November 2015

Good Ti/Al/Ni/Au ohmic contacts were achieved in AlGaN/GaN high electron mobility transistors (HEMTs) by using holes etching in an ohmic region. The ohmic contact with a contact resistance of 0.1 Ωmm was obtained. Compared with other methods which could reduce the ohmic‐contact resistance, this method has simple process steps, low cost and can obtain stable device characteristics. The output characteristics and transfer characteristics of devices were analysed. The HEMTs using this method show lower contact resistance, smaller knee voltage and larger saturation current than the conventional HEMTs.
Die Rolle psychologischer und technikbezogener Persönlichkeitsmerkmale sowie individueller Wissensbestände von Ärztinnen und Ärzten für die Adoption des Telemonitorings in der medizinischen Versorgung
Authors: Dockweiler C. , Hornberg C.
Published: November 2015

Hintergrund: Informations- und Kommunikationstechnologien gewinnen im Gesundheitswesen zunehmend an Bedeutung. Insbesondere Leistungen des Telemonitorings zeigen im Rahmen randomisierter klinischer Studien erste medizinische Evidenz mit Blick auf die Steigerung der Versorgungsqualität, die Verringerung stationärer Aufenthalte und die Reduzierung von Behandlungskosten. Für die Erschließung der angedeuteten Potenziale und die langfristige Implementation in die Versorgungspraxis ist eine nutzerinnen- und nutzerorientierte Technikentwicklung unter Berücksichtigung häufig komplexer Strukturen der Technikakzeptanz erforderlich.

Methden: Einstellungen und Haltungen sowie die vorliegenden Wissensbestände zum Telemonitoring vonseiten klinisch tätiger Ärztinnen und Ärzte (Zufallsstichprobe, N=614) wurden im Rahmen einer online-basierten Erhebung mit einer Rücklaufquote von 21% (n=133) ermittelt. Zur Analyse der Herausbildung positiver Haltungsmuster gegenüber Telemonitoringanwendungen wurden Wirkungszusammenhänge zwischen psychologischen und technikbezogenen Persönlichkeitsmerkmalen sowie den wahrgenommenen Wissensbeständen ermittelt.

Ergebnisse: Positive Einstellungsmuster gegenüber dem Telemonitoring werden maßgeblich durch das individuelle Wissen und die Verträglichkeit (als Persönlichkeitsmerkmal, welches stark durch altruistische Züge und zwischenmenschliches Vertrauen geprägt ist) eines Individuums beeinflusst. Die Einstellungen zum Telemonitoring sind mit dem Ziel einer qualitativen Verbesserung der Versorgungssituation klar nutzwertorientiert und unterscheiden sich nach Versorgungssektor und Geschlecht. Insgesamt fühlen sich nur 57% der befragten Ärztinnen und Ärzte ausreichend über den Einsatz des Telemonitorings informiert.

Schlussfolgerung: Vor dem Hintergrund der Nutzwertorientierung im Rahmen der Einstellungsbildung kommt der evidenzbasierten Entwicklung der Telemedizin eine besondere Bedeutung für eine gelingende Adoption zu. Hierfür bedarf es zukünftig deutlicherer Bemühungen im Wissenstransfer, im Austausch von Best-Practice-Lösungen und der Verankerung der Telemedizin in Aus- und Fortbildung.
Nutzenbewertung der minimal-invasiven Schulterchirurgie aus Sicht der Kostenträger
Authors: Schlothauer N. , Willers J. , Enders D. , von Knoch M.
Published: November 2015

Am Beispiel der minimal-invasiven Schulterchirurgie werden die Arbeitsunfähigkeitstage als ein Teil der indirekten Kosten abgebildet und in die Bewertung der Wirtschaftlichkeit der Behandlungsmethode mit einbezogen. Für 266 Versicherte wurde die Dauer der Arbeitsunfähigkeit nach einer stationär durchgeführten Schulterarthroskopie bestimmt. Die Dauer und Höhe der Krankengeldzahlungen betrugen im Durchschnitt pro Teilnehmer 9,5 Tage bzw. 485,00 €. Versicherte, die maximal 50 Jahre alt waren, hatten signifikant mehr Krankengeldtage als Versicherte über 50 Jahre. Krankengeldzahlungen als indirekte Kosten einer Krankenbehandlung konnten effizient über Sekundärdatenanalysen erhoben und bewertet werden.
Exergy analysis of photovoltaic thermal integrated biogas system
Authors: Bhatti Jasleen , Joshi Poonam , Tiwari G. N. , Al-Helal I. M.
Published: November 2015

In this communication, an analytical expression for slurry temperature as a function of design and climatic parameters of photovoltaic thermal (PVT) integrated biogas system has been derived. Also, exergy analysis of the given system has been carried for the month of January for Srinagar (Kashmir), India. The effects of mass flow rate (ṁf), number of PVT collectors, length of heat exchanger (L), and heat capacity of slurry on slurry temperature (Ts) have been studied under forced mode of operation. For a given capacity of slurry a system comprising of PVT collectors in series combination has been studied for achieving optimum slurry temperature (Ts) of ∼35 °C to ensure maximum biogas production. The results have been analysed for three cases namely: case (i) conventional flat plate collectors, case (ii) partially covered flat plate collectors and case (iii) fully covered photovoltaic module. It was concluded that the system consisting of partially covered flat plate collectors as discussed in case (ii) is highly sustainable and efficient for functioning in harsh cold climatic conditions that exists in Srinagar (Kashmir), India because it produces both thermal as well as electrical energy simultaneously.
A highly specific test for periodicity
Authors: Ansmann Gerrit
Published: November 2015

We present a method that allows to distinguish between nearly periodic and strictly periodic time series. To this purpose, we employ a conservative criterion for periodicity, namely, that the time series can be interpolated by a periodic function whose local extrema are also present in the time series. Our method is intended for the analysis of time series generated by deterministic time-continuous dynamical systems, where it can help telling periodic dynamics from chaotic or transient ones. We empirically investigate our method's performance and compare it to an approach based on marker events (or Poincaré sections). We demonstrate that our method is capable of detecting small deviations from periodicity and outperforms the marker-event-based approach in typical situations. Our method requires no adjustment of parameters to the individual time series, yields the period length with a precision that exceeds the sampling rate, and its runtime grows asymptotically linear with the length of the time series.
Energetics, structure, and rovibrational spectroscopic properties of the sulfurous anions SNO− and OSN−
Authors: Fortenberry Ryan C. , Francisco Joseph S.
Published: November 2015

The SNO− and OSN− anions are shown in this work to be very stable negatively charged species in line with other recent work [T. Trabelsi et al., J. Chem. Phys. 143, 164301 (2015)]. Utilizing established quartic force field techniques, the structural and rovibrational data for these anions are produced. The SNO− anion is less linear and has weaker bonds than the corresponding neutral radical giving much smaller rotational constants. OSN− is largely unchanged in these regards with inclusion of the additional electron. The S–N bond is actually stronger, and the rotational constants of OSN− versus OSN are similar. The vibrational frequencies of SNO− are red-shifted from the radical while those in OSN− are mixed. OSN− has mixing of the stretching modes while the S–N and N–S stretches of SNO− are largely independent of one another. The ω3 stretches are much brighter in these anions than they are in the radicals, but the ω1 stretches are still the brightest.
Moving antiphase boundaries using an external electric field
Authors: Vaideeswaran Kaushik , Shapovalov Konstantin , Yudin Petr V. , Tagantsev Alexander K. , Setter Nava
Published: November 2015

Antiphase boundaries (APBs) are unique domain walls that may demonstrate switchable polarization in otherwise non-ferroelectric materials such as SrTiO3 and PbZrO3. The current study explores the possibility of displacing such domain walls at the nanoscale. We suggest the possibility of manipulating APBs using the inhomogeneous electric field of an Atomic Force Microscopy (AFM) tip with an applied voltage placed in their proximity. The displacement is studied as a function of applied voltage, film thickness, and initial separation of the AFM tip from the APB. It is established, for example, that for films with thickness of 15 nm, an APB may be attracted under the tip with a voltage of 25 V from initial separation of 30 nm. We have also demonstrated that the displacement is appreciably retained after the voltage is removed, rendering it favorable for potential applications.
Three equivalent rationalities of vertex operator superalgebras
Authors: Han Jianzhi , Ai Chunrui
Published: November 2015

For any vertex operator superalgebra V=V0̄⊕V1̄ satisfying the C2-cofiniteness, it is proved that rationality of V, rationality of V0̄ and σ-rationality of V are equivalent under certain condition.
Dispensing nano-pico droplets of ferrofluids
Authors: Irajizad Peyman , Farokhnia Nazanin , Ghasemi Hadi
Published: November 2015

Dispensing miniature volumes of a ferrofluid is of fundamental and practical importance for diverse applications ranging from biomedical devices, optics, and self-assembly of materials. Current dispensing systems are based on microfluidics flow-focusing approaches or acoustic actuation requiring complicated structures. A simple method is presented to continuously dispense the miniature droplets from a ferrofluid reservoir. Once a jet of the ferrofluid is subjected to a constrained flux through a membrane and an inhomogeneous magnetic field, the jet experiences a curvature-driven instability and transforms to a droplet. Ferrofluid droplets in the range of 0.1–1000 nl are dispensed with tunable dispensing frequencies. A model is developed that predicts the dispensed volume of the ferrofluid droplets with an excellent agreement with the measurements.
Flow field topology of submerged jets with fractal generated turbulence
Authors: Cafiero Gioacchino , Discetti Stefano , Astarita Tommaso
Published: November 2015

Fractal grids (FGs) have been recently an object of numerous investigations due to the interesting capability of generating turbulence at multiple scales, thus paving the way to tune mixing and scalar transport. The flow field topology of a turbulent air jet equipped with a square FG is investigated by means of planar and volumetric particle image velocimetry. The comparison with the well-known features of a round jet without turbulence generators is also presented. The Reynolds number based on the nozzle exit section diameter for all the experiments is set to about 15 000. It is demonstrated that the presence of the grid enhances the entrainment rate and, as a consequence, the scalar transfer of the jet. Moreover, due to the effect of the jet external shear layer on the wake shed by the grid bars, the turbulence production region past the grid is significantly shortened with respect to the documented behavior of fractal grids in free-shear conditions. The organization of the large coherent structures in the FG case is also analyzed and discussed. Differently from the well-known generation of toroidal vortices due to the growth of azimuthal disturbances within the jet shear layer, the fractal grid introduces cross-wise disturbs which produce streamwise vortices; these structures, although characterized by a lower energy content, have a deeper streamwise penetration than the ring vortices, thus enhancing the entrainment process.