bluuebunny/crossref_metadata_2025 huggingface dataset:
In silico approach to reveal viral populations in grapevine cultivar Tannat using transcriptome data
Authors: Jo Yeonhwa , Choi Hoseong , Kyong Cho Jin , Yoon Ju-Yeon , Choi Seung-Kook , Kyong Cho Won
Published: October 2015

Viruses are ubiquitous and present in a wide range of settings, from living organisms to various environments. Although viruses are regarded as important pathogens in higher plants, viral populations in specific host plants have not yet been fully examined. This study revealed viral populations in grape berries obtained from a cultivar from a single vineyard using currently available grapevine transcriptomes. Eight viruses and two viroids were identified using 11 grapevine libraries. Virus-associated sequences in each transcriptome ranged from 0.2% (seed) to 8.8% (skin). The amount of viral RNAs and virus copy numbers was quantified, thus revealing the dominant virus or viroid in each individual library. In addition, five viral genomes were successfully assembled de novo using transcriptome data. Phylogenetic analyses revealed that the viruses and viroids might have originated from Europe, along with the host. Single nucleotide variation studies revealed the quasispecies of RNA viruses. Taken together, this study defines complex viral populations in three different grape tissues from a single vineyard.
Evaluation of regulatory genetic variants in POU5F1 and risk of congenital heart disease in Han Chinese
Authors: Lin Yuan , Ding Chenyue , Zhang Kai , Ni Bixian , Da Min , Hu Liang , Hu Yuanli , Xu Jing , Wang Xiaowei , Chen Yijiang , Mo Xuming , Cui Yugui , Shen Hongbing , Sha Jiahao , Liu Jiayin , Hu Zhibin
Published: October 2015

OCT4 is a transcription factor of the POU family, which plays a key role in embryonic development and stem cell pluripotency. Previous studies have shown that Oct4 is required for cardiomyocyte differentiation in mice and its depletion could result in cardiac morphogenesis in embryo. However, whether the genetic variations in OCT4 coding gene, POU5F1, confer the predisposition to congenital heart disease (CHD) is unclear. This study sought to investigate the associations between low-frequency (defined here as having minor allele frequency (MAF) between 0.1%–5%) and rare (MAF below 0.1%) variants with potential function in POU5F1 and risk of CHD. We conducted association analysis in a two-stage case-control study with a total of 2,720 CHD cases and 3,331 controls in Chinese. The low-frequency variant rs3130933 was observed to be associated with a significantly increased risk of CHD [additive model: adjusted odds ratio (OR) = 2.15, adjusted P = 3.37 × 10−6]. Furthermore, luciferase activity assay showed that the variant A allele led to significantly lower expression levels as compared to the G allele. These findings indicate for the first time that low-frequency functional variant in POU5F1 may contribute to the risk of congenital heart malformations.
Maternal TET3 is dispensable for embryonic development but is required for neonatal growth
Authors: Tsukada Yu-ichi , Akiyama Tomohiko , Nakayama Keiichi I.
Published: October 2015

The development of multicellular organisms is accompanied by reprogramming of the epigenome in specific cells, with the epigenome of most cell types becoming fixed after differentiation. Genome-wide reprogramming of DNA methylation occurs in primordial germ cells and in fertilized eggs during mammalian embryogenesis. The 5-methylcytosine (5mC) content of DNA thus undergoes a marked decrease in the paternal pronucleus of mammalian zygotes. This loss of DNA methylation has been thought to be mediated by an active demethylation mechanism independent of replication and to be required for development. TET3-mediated sequential oxidation of 5mC has recently been shown to contribute to the genome-wide loss of 5mC in the paternal pronucleus of mouse zygotes. We now show that TET3 localizes not only to the paternal pronucleus but also to the maternal pronucleus and oxidizes both paternal and maternal DNA in mouse zygotes, although these phenomena are less pronounced in the female pronucleus. Genetic ablation of TET3 in oocytes had no significant effect on oocyte development, maturation, or fertilization or on pregnancy, but it resulted in neonatal sublethality. Our results thus indicate that zygotic 5mC oxidation mediated by maternal TET3 is required for neonatal growth but is not essential for development.
Improvement of DNA recognition through molecular imprinting: hybrid oligomer imprinted polymeric nanoparticles (oligoMIP NPs)
Authors: Brahmbhatt H. , Poma A. , Pendergraff H. M. , Watts J. K. , Turner N. W.
Published: October 2015

Here we describe the production and characterization of oligoMIP NPs in which we have preorganized the oligonucleotide binding by molecular imprinting technology.
Pseudo crystalline state thermochromic and reverse-photochromic reactivity of spiroindolinobenzopyran upon encapsulation into Zn-MOF-74
Authors: Lakmali U. G. Randika , Hettiarachchi Champika V.
Published: October 2015

Drastic changes observed in chromic properties of an unsubstituted spiroindolinobenzopyran encapsulated into a MOF lattice are reported.
Self-assembly of phospholipids on flat supports
Authors: Mhashal Anil R. , Roy Sudip
Published: October 2015

The current study deals with the self-assembly of phospholipids on flat supports using the Martini coarse grain model.
Enhancement of spin polarization induced by Coulomb on-site repulsion between localized pz electrons in graphene embedded with line defects
Authors: Ren Ji-Chang , Wang Zhigang , Zhang Rui-Qin , Ding Zejun , Van Hove Michel A.
Published: October 2015

The spin polarization distributions of the system are very sensitive to the values of Coulomb on-site repulsion at ELDs, indicating that the Coulomb on-site repulsion cannot be ignored in this system.
Photophysical deactivation pathways in adenine oligonucleotides
Authors: Spata Vincent A. , Matsika Spiridoula
Published: October 2015

QM/MM calculations on the photophysics of adenine based oligonucleotides reveal several deactivation processes involving either monomer-like excited states or excimers.
Dynamic atomic contributions to infrared intensities of fundamental bands
Authors: Silva Arnaldo F. , Richter Wagner E. , Bassi Adalberto B. M. S. , Bruns Roy E.
Published: October 2015

Dynamic atomic intensity contributions to fundamental infrared intensities are defined as the scalar products of dipole moment derivative vectors for atomic displacements and the total dipole derivative vector of the normal mode.
Engineering oxygen vacancies towards self-activated BaLuAlxZn4−xO7−(1−x)/2photoluminescent materials: an experimental and theoretical analysis
Authors: Ma Lan , Xia Zhiguo , Atuchin Victor , Molokeev Maxim , Auluck S. , Reshak A. H. , Liu Quanlin
Published: October 2015

Self-activated yellow-emitting BaLuAlxZn4−xO7−(1−x)/2phosphor has been investigated by a combined experimental and theoretical analysis.
Metal–organic frameworks for photocatalysis
Authors: Li Ying , Xu Hua , Ouyang Shuxin , Ye Jinhua
Published: October 2015

Metal–organic frameworks (MOFs) have emerged as novel photocatalysts owing to their inherent structural characteristics of a large surface area and a well-ordered porous structure. In this article, we summarize various strategies carried out over MOFs via either modification of the organic linker/metal clusters or incorporation with metal/complex catalysts to enhance the light absorption, charge separation, reactant adsorption/activation of MOF-based photocatalysis towards the superior photocatalytic performance.
Six-coordinate ferric porphyrins containing bidentate N-t-butyl-N-nitrosohydroxylaminato ligands: structure, magnetism, IR spectroelectrochemisty, and reactivity
Authors: Xu Nan , Christian Jonathan H. , Dalal Naresh S. , Abucayon Erwin G. , Lingafelt Colin , Powell Douglas R. , Richter-Addo George B.
Published: October 2015

Protonation of iron porphyrin NONOates generates N2Oviathe intermediacy of HNO. Reactions with imidazole results in N–N bond cleavage to yield RNO and NO.
Reactivity of aminophosphonic acids. Oxidative dephosphonylation of 1-aminoalkylphosphonic acids by aqueous halogens
Authors: Drabowicz Józef , Jordan Frank , Kudzin Marcin H. , Kudzin Zbigniew H. , Stevens Christian V. , Urbaniak Paweł
Published: October 2015

The quantitative halogen-promoted dephosphonylation of AAPoccursviapentacoordinate phosphorus derivative3with the formation of phosphoric acid, carbonyls and nitrogen.
A sequential logic gate-based “smart probe” for selective monitoring of Cu2+, Fe3+ and CN−/F−via differential analyses
Authors: Singh Alok Kumar , Nagarajan Rajamani
Published: October 2015

A sequential logic gate-based probe for the detection of Cu2+, Fe3+, CN− and F− at ppm levels in water.
Syntheses, structures, and magnetic properties of homodinuclear lanthanide complexes based on dinucleating Schiff base ligands
Authors: Gao Feng , Yang Feng-Lei , Zhu Guang-Zhou , Zhao Yue
Published: October 2015

Two series of homodinuclear lanthanide(iii) complexes were synthesized and characterized. Magnetic studies reveal the weakly antiferromagnetic coupling between paramagnetic Ln ions and enhanced relaxation of magnetization for Dy2 complexes.
An effect of the substituent position and metal type on the electropolymerization properties of chalcone substituted metallophthalocyanines
Authors: Çakır Dilek , Arslan Tayfun , Biyiklioglu Zekeriya
Published: October 2015

Cobalt(ii) and manganese(iii) phthalocyanines bearing peripherally and non-peripherally tetra substituted {(2E)-3-[4-(dimethylamino)phenyl]prop-2-enoyl}phenoxy groups were synthesized by cyclotetramerization of the phthalonitrile derivatives and their electrochemical properties were examined using CV and SWV techniques for the first time.
Magnetic filament brushes: tuning the properties of a magnetoresponsive supracolloidal coating
Authors: Sánchez Pedro A. , Pyanzina Elena S. , Novak Ekaterina V. , Cerdà Joan J. , Sintes Tomàs , Kantorovich Sofia S.
Published: October 2015

We present a theoretical study on the design of a supramolecular magnetoresponsive coating. The coating is formed by a relatively dense array of supracolloidal magnetic filaments grafted to a surface in a polymer brush-like arrangement. In order to determine and optimise the properties of the magnetic filament brush, we perform extensive computer simulations with a coarse-grained model that takes into account the correlations between the magnetic moments of the particles and the backbone crosslinks. We show that the self-assembly of magnetic beads from neighbouring filaments defines the equilibrium structural properties of the complete brush. In order to control this self-assembly, we highlight two external stimuli that can lead to significant effects: temperature of the system and an externally applied magnetic field. Our study reveals self-assembly scenarios inherently driven by the crosslinking and grafting constraints. Finally, we explain the mechanisms of structural changeovers in the magnetic filament brushes and confirm the possibility of controlling them by changing the temperature or the intensity of an external magnetic field.
Biocompatible reduced graphene oxide sheets with superior water dispersibility stabilized by cellulose nanocrystals and their polyethylene oxide composites
Authors: Ye Yun-Sheng , Zeng Hong-Xia , Wu Jun , Dong Li-Yun , Zhu Jin-Tao , Xue Zhi-Gang , Zhou Xing-Ping , Xie Xiao-Lin , Mai Yiu-Wing
Published: October 2015

The conversion of GO to RGO, using biodegradable CNC, offers a sustainable approach to large-scale preparation of highly biocompatible and easily dispersed RGO.
Iron-containing N-doped carbon electrocatalysts for the cogeneration of hydroxylamine and electricity in a H2–NO fuel cell
Authors: Daems Nick , Sheng Xia , Alvarez-Gallego Yolanda , Vankelecom Ivo F. J. , Pescarmona Paolo P.
Published: October 2015

Iron-containing N-doped carbon materials are active electrocatalysts for the cogeneration of hydroxylamine and electricity in a H2–NO fuel cell, which is a promising alternative to the present industrial synthesis.
Characterization of two modes in a dielectric barrier discharge probe by optical emission spectroscopy and time-of-flight mass spectrometry
Authors: Bierstedt Andreas , Panne Ulrich , Rurack Knut , Riedel Jens
Published: October 2015

A dielectric barrier discharge probe has been developed, which enables switching between two individual product channels yielding either protonated or ammoniated molecules.
Texture and wettability of metallic lotus leaves
Authors: Frankiewicz C. , Attinger D.
Published: October 2015

Hydrophilic materials can be made superrepellent to water by chemical texturing, a stochastic rather than deterministic process. Here, multiscale features render copper surfaces comparable to lotus leaves, in terms of wettability, texture and water repellency. The novel ability to make hydrophilic materials superrepellent without deterministic structuring opens the way to large-scale manufacturing of superrepellent surfaces.
Analysing the effect of crystal size and structure in highly efficient CH3NH3PbI3 perovskite solar cells by spatially resolved photo- and electroluminescence imaging
Authors: Mastroianni S. , Heinz F. D. , Im J.-H. , Veurman W. , Padilla M. , Schubert M. C. , Würfel U. , Grätzel M. , Park N.-G. , Hinsch A.
Published: October 2015

The spatial and size distribution of perovskite crystals and their morphology strongly influences the PL emission and the performance of the solar cell.
Synthesis of 1D-glyconanomaterials by a hybrid noncovalent–covalent functionalization of single wall carbon nanotubes: a study of their selective interactions with lectins and with live cells
Authors: Pernía Leal M. , Assali M. , Cid J. J. , Valdivia V. , Franco J. M. , Fernández I. , Pozo D. , Khiar N.
Published: October 2015

A shotgun-like approach allowing the synthesis of functional, biocompatible glyconanoring-coated single wall carbon nanotubes with a shish-kebab topology and lectin specificity is reported.
Ultraporous nanocrystalline TiO2-based films: synthesis, patterning and application as anti-reflective, self-cleaning, superhydrophilic coatings
Authors: Faustini Marco , Grenier Antonin , Naudin Guillaume , Li Ronghua , Grosso David
Published: October 2015

Ultraporous anatase-based TiO2 films are synthesized, patterned and used as multifunctional anti-reflective, self-cleaning, super-hydrophilic coatings.
Effective chemiluminogenic systems based on acridinium esters bearing substituents of various electronic and steric properties
Authors: Zadykowicz Beata , Czechowska Justyna , Ożóg Agnieszka , Renkevich Anton , Krzymiński Karol
Published: October 2015

A series of new acridinium esters, variously substituted in the benzene ring, have been investigated for the mechanism of light generation and ability to show chemiluminescence in various environments.
Solvent-induced emission of organogels based on tris(phenylisoxazolyl)benzene
Authors: Ikeda Toshiaki , Masuda Tetsuya , Takayama Midori , Adachi Hiroaki , Haino Takeharu
Published: October 2015

Organogels of tris(phenylisoxazolyl)benzenes possessing a perylenebisimide displayed strong emission in 1,4-dioxane and no emission in benzene.
Iodine-catalyzed expeditious synthesis of sulfonamides from sulfonyl hydrazides and amines
Authors: Yotphan Sirilata , Sumunnee Ladawan , Beukeaw Danupat , Buathongjan Chonchanok , Reutrakul Vichai
Published: October 2015

A new synthesis of sulfonamides via an iodine-catalyzed sulfonylation of amines with arylsulfonyl hydrazides at room temperature is reported.
A DFT study of the chemical and optical properties of 7-atom Ag–X [X = Li, Na] nanoalloys for potential applications in opto-electronics and catalysis
Authors: Debnath Shaikat , Said Suhana Mohd , Rabilloud Franck , Chatterjee Abhijit , Roslan Muhammad Faris , Mainal Azizah , Mahmood Mohamad Syafie
Published: October 2015

In this paper, Ag atoms are substituted by X (Li, Na) atoms to form AgmX(7−m) clusters to explore their electronic, chemical and optical properties in the framework of density functional theory (DFT).
Feasibility of bioethanol and biobutanol as transportation fuel in spark-ignition engine: a review
Authors: Yusoff M. N. A. M. , Zulkifli N. W. M. , Masum B. M. , Masjuki H. H.
Published: October 2015

Bio-alcohols (bioethanol and biobutanol) which are produced from natural materials have emerged as promising transportation fuels because of their sustainability and environmental benefits which can reduce the dependency on crude oil reserves.
Synthesis, in silico screening and preclinical evaluation studies of a hexapeptide analogue for its antimicrobial efficacy
Authors: Kaul Ankur , Tiwari Anjani K. , Varshney Raunak , Mishra Anil K.
Published: October 2015

A novel Trp-Arg rich antimicrobial peptide was designed and the synthesized nonapeptide (hexapeptide analogue, AMP) was screened for its antimicrobial and hemolytic activity.
Efficient extraction of major catechins in Camellia sinensis leaves using green choline chloride-based deep eutectic solvents
Authors: Li Ji , Han Zhigang , Zou Yongpeng , Yu Bo
Published: October 2015

Choline chloride-based deep eutectic solvents (DESs), composed of alcohols, organic acids and saccharides, were used as green solvents for extraction of major catechins inCamellia sinensisleaves.
The effect of hemiketals on the relaxivity of endohedral gadofullerenols
Authors: Zou Toujun , Zhen Mingming , Li Jie , Chen Daiqin , Feng Yongqiang , Li Ruimin , Guan Mirong , Zhang Ying , Shu Chunying , Wang Chunru
Published: October 2015

Gd@C82(OH)xOy with more hemiketals show much higher relaxivities than those with fewer hemiketals.
Synthesis, micellization, and thermally-induced macroscopic micelle aggregation of poly(vinyl chloride)-g-poly(N-isopropylacrylamide) amphiphilic copolymer
Authors: Liu Keyong , Pan Pengju , Bao Yongzhong
Published: October 2015

PVC-g-PNIPAM amphiphilic copolymers with controlled graft lengths and densities are synthesized, which form unique macroscopic aggregates with well-defined 3D shapes in dilute aqueous solution above the LCST.
Conversion of CO2 into renewable fuel over Pt–g-C3N4/KNbO3 composite photocatalyst
Authors: Shi Haifeng , Zhang Chengliang , Zhou Changping , Chen Guoqing
Published: October 2015

g-C3N4/KNbO3 composite photocatalyst was prepared and developed for reduction of CO2 into CH4.
Regioselective synthesis of triazoles via base-promoted oxidative cycloaddition of chalcones with azides in aqueous solution
Authors: Yang Wenchao , Miao Tao , Li Pinhua , Wang Lei
Published: October 2015

A base-promoted oxidative cycloaddition of chalcones with azides was developed for the regioselective synthesis of trisubstituted triazoles under transition-metal-free conditions.
Glycine-assisted evolution of palygorskite via a one-step hydrothermal process to give an efficient adsorbent for capturing Pb(ii) ions
Authors: Zhang Zhifang , Wang Wenbo , Kang Yuru , Zong Li , Wang Aiqin
Published: October 2015

As the materials of “green 21stcentury material worlds”, natural silicates have received unprecedented attention by virtue of their abundance, low-cost, stability, and non-toxic and eco-friendly nature compared to other synthetic materials.
Preparation of mesoporous titanosilicate with isolated Ti active centers for cyclohexene oxidation
Authors: Gupta S. , Vinod C. P. , Jagadeesan D.
Published: October 2015

We report the preparation of mesoporous titanosilicate catalysts with isolated active Ti centres using CTAB as the structure directing agent and ethylenediamine as the complexing agent (TSC–ED).
Degradation of soil-adsorbed DDT and its residues by NZVI addition
Authors: Singh Swatantra Pratap , Bose Purnendu
Published: October 2015

Interaction of NZVI with DDTr in soil-slurry system.
Extractant mediated nano-aggregate formation in Triton X-114 aided cloud formation: structural insights from TEM and SANS studies
Authors: Kumari N. , Verma P. K. , Pathak P. N. , Gupta A. , Ballal A. , Aswal V. K. , Mohapatra P. K.
Published: October 2015

Nanoaggregate formation by self assembly was noticed during the cloud formation of Triton X-114 in the presence of dibenzoylmethane (DBM), thenoyltrifluoroacetone (HTTA) and 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) and tributyl phosphate (TBP).
A novel chitosan/wheat gluten biofoam fabricated by spontaneous mixing and vacuum-drying
Authors: Chen F. , Gällstedt M. , Olsson R. T. , Gedde U. W. , Hedenqvist M. S.
Published: October 2015

The pore formation and its structure.
Preparation and characterization of pullulanase debranched starches and their properties for drug controlled-release
Authors: Liu Guodong , Hong Yan , Gu Zhengbiao , Li Zhaofeng , Cheng Li , Li Caiming
Published: October 2015

Linear short amylose and glucan tend to align and aggregate to form hydrogels that hold less water. The drug release properties of debranched starch based tablets can be controlled by the pullulanase modification conditions.
Hierarchical crystalline morphologies induced by a distinctly different melt penetrating process
Authors: Zhang Rui-Yan , Yang Wei , Zhang Quan-Ping , Xia Xiao-Chao , Zhu Chun-Xia , He Shan , Huang Yan-Hao , Liu Zheng-Ying , Yang Ming-Bo
Published: October 2015

It is the first time that hierarchically crystalline morphologies induced by melt penetration of the melt with different interactions.
A rapid, sensitive and label-free sensor for Hg(ii) ion detection based on blocking of cysteine-quenching of fluorescent poly(thymine)-templated copper nanoparticles
Authors: Wang Hai-Bo , Chen Ying , Li Yang , Zhang Hong-Ding , Cao Jun-Tao
Published: October 2015

A rapid fluorescence sensor was developed for Hg2+ detection based on blocking of cysteine-quenching of poly T templated Cu NPs.
A novel gold nanoparticle decorated nanocrystalline zeolite based electrochemical sensor for the nanomolar simultaneous detection of cysteine and glutathione
Authors: Kaur Balwinder , Srivastava Rajendra , Satpati Biswarup
Published: October 2015

High electrocatalytic activity of the sensor can be attributed to the highly dispersed gold nanoparticles on the nanocrystalline zeolite matrix.
Free radical nano scavenger based on amphiphilic novolacs
Authors: Wang Yue , Zhang Qian , Xie Chao , Zhao Xin , Niu Jinfen , Zhao Jie , Oh Jung Kwon , Li Peng , Li Pengfei
Published: October 2015

Synthetic amphiphilic novolacs via click chemistry are capable of forming micelles, and interestingly, can act as highly efficient nano-scavengers for hydroxyl free radicals.
Visualizing changes in mitochondrial Mg2+during apoptosis with organelle-targeted triazole-based ratiometric fluorescent sensors
Authors: Zhang G. , Gruskos J. J. , Afzal M. S. , Buccella D.
Published: October 2015

Targeted ratiometric fluorescent sensors enable visualization of Mg2+dynamics in mitochondria, revealing an increase in free Mg2+in early stages of apoptosis.
s-Heptazine oligomers: promising structural models for graphitic carbon nitride
Authors: Zambon A. , Mouesca J.-M. , Gheorghiu C. , Bayle P. A. , Pécaut J. , Claeys-Bruno M. , Gambarelli S. , Dubois L.
Published: October 2015

In this study, linears-heptazine oligomers were synthesized to serve as well-defined molecular models for g-CN..
CeO2 nanowires self-inserted into porous Co3O4 frameworks as high-performance “noble metal free” hetero-catalysts
Authors: Wang Xiao , Zhao Shuna , Zhang Yibo , Wang Zhuo , Feng Jing , Song Shuyan , Zhang Hongjie
Published: October 2015

One-dimensional CeO2 nanowires self-insert into porous Co3O4 nanocages and exhibit component-dependent catalytic properties for the reduction of NO by CO.
The fabrication of a supra-amphiphile for dissipative self-assembly
Authors: Wang Guangtong , Tang Bohan , Liu Yang , Gao Qingyu , Wang Zhiqiang , Zhang Xi
Published: October 2015

Dissipative self-assembly is a challenging but attractive field of supramolecular science, because it generally concerns complex system but is more close to the self-assembly of living bodies. We successfully realized dissipative self-assembly by coupling a supra-amphiphile with a chemical oscillator.
Wetting behavior on hexagonally close-packed polystyrene bead arrays with different topographies
Authors: Park Yi-Seul , Yoon Seo Young , Lee Jin Seok
Published: October 2015

The wetting behavior of polystyrene bead arrays is influenced by the surface roughness and the contact area with a water droplet.
Highly cost-effective and sulfur/coking resistant VOx-grafted TiO2 nanoparticles as an efficient anode catalyst for direct conversion of dry sour methane in solid oxide fuel cells
Authors: Garcia Alfonso , Yan Ning , Vincent Adrien , Singh Anand , Hill Josephine M. , Chuang Karl T. , Luo Jing-Li
Published: October 2015

In this work, we show that grafted metal oxide can be a highly cost-effective and active anode for solid oxide fuel cells for sour methane conversion.
Nitrogen-doped carbon-encapsulated SnO2–SnS/graphene sheets with improved anodic performance in lithium ion batteries
Authors: Shan Jieqiong , Liu Yuxin , Liu Ping , Huang Yanshan , Su Yuezeng , Wu Dongqing , Feng Xinliang
Published: October 2015

A dual-doping approach for N–C@SnO2–SnS/GN with 2D core–shell architecture has been developed. Used as the anode material in LIBs, it delivers a high specific capacity of 1236 mA h g−1 at a current density of 0.1 A g−1 after 110 cycles.
Enhanced broadband spectral response and energy conversion efficiency for hetero-junction solar cells with graded-sized Si quantum dots/SiC multilayers
Authors: Cao Yunqing , Xu Jun , Ge Zhaoyun , Zhai Yingying , Li Wei , Jiang Xiaofan , Chen Kunji
Published: October 2015

We propose a novel structure of a graded-sized Si QDs/Si hetero-junction cell, which exhibits broadband spectral response and improved cell performance.
Synthesis of emissive water-soluble network polymers based on polyhedral oligomeric silsesquioxane and their application as optical sensors for discriminating the particle size
Authors: Kakuta Takahiro , Tanaka Kazuo , Chujo Yoshiki
Published: October 2015

We report organic–inorganic hybrid gels composed of polyhedral oligomeric silsesquioxane (POSS)-based network polymers and their variable emission properties depending on the size of coexisting silica particles (SPs).
A durable and fast-responsive photochromic and switchable luminescent polyviologen–polyoxometalate hybrid
Authors: Shen De-Feng , Li Si , Liu Hong , Jiang Wei , Zhang Qiang , Gao Guang-Gang
Published: October 2015

A novel photochromic hybrid has been synthesized by fluorescent POM and viologen molecules, of which the decoloration process can be easily realized by exposure to humid air or heating.
Smac mimetic with TNF-α targets Pim-1 isoforms and reactive oxygen species production to abrogate transformation from blebbishields
Authors: Jinesh Goodwin G. , Laing Naomi M. , Kamat Ashish M.
Published: October 2015

Cancer cells are capable of sphere formation (transformation) through reactive oxygen species (ROS) and glycolysis shift. Transformation is linked to tumorigenesis and therapy resistance, hence targeting regulators of ROS and glycolysis is important for cancer therapeutic candidates. Here, we demonstrate that Smac mimetic AZ58 in combination with tumour necrosis factor-α (TNF-α) was able to inhibit the production of ROS, inhibit glycolysis through Pim-1 kinase-mediated Ser-112 phosphorylation of BAD, and increase depolarization of mitochondria. We also identified mitochondrial isoforms of Pim-1 kinase that were targeted for degradation by AZ58 in combination with TNF-α or AZ58 in combination with Fas ligand (FasL) plus cycloheximide (CHX) through caspase-3 to block transformation. Our study demonstrates that Smac mimetic in combination with TNF-α is an ideal candidate to target Pim-1 expression, inhibit ROS production and to block transformation from blebbishields.
Short‐range visible light ranging and detecting system using illumination light emitting diodes
Authors: Wu Dehao , Zhong Wen‐De , Ghassemlooy Zabih , Chen Chen
Published: October 2015

A visible light object ranging and detecting system utilising light emitting diodes (LEDs) is proposed and investigated. The LEDs are used not only as illuminating devices but also as ranging and detecting sensors. LED is intensity modulated with a predetermined sinusoid signal at a certain frequency with an initial phase. After propagation, the backscatter signals from the object are received and detected. The direction of the object is estimated by an optical imaging receiver. The distance between the object and the LED is obtained based on a differential phase‐shift measurement. The theoretical model of the system is derived and evaluated, and the fundamental channel characteristics of the proposed system are simulated and analysed. The numerical results show that with a proper design, the presence or position of an object can be identified with a detection range of up to ∼6 m, with an estimation error as small as ∼5 cm for the system employing commercially available illumination LEDs.
Tomographic Evaluation of Mandibular Thickness on Premolar and Molar Regions Related to Monocortical Screws
Authors: Ribeiro Jonathan , Marin Charles , Homsi Nicolas , Rocha Junior Hernando , Magacho Luiz , Fidalgo Guto , Zanela Manuella
Published: October 2015

The aim of this study was to measure the thickness of the mandible from the external cortical plate to the teeth roots on premolar and molar regions using CT scan to determine the safety margin for the application of monocortical screws for internal rigid fixation. Thirty-one patients underwent CT-scan imaging for surgical planning. The images were used to measure bilaterally the distance from the external cortex of the mandible to the roots of teeth on premolar and molar region by means of Dental Slice software (Bioparts Prototipagem Biomedica, Brasília, DF, Brazil). Mean, median, standard deviation, one-way ANOVA and post hoc Tukey's test were used for statistical analysis. No statistical differences for thickness were found between right and left side ( p = 0.1652). The mean thickness for the left side was 4.17 ± 1.68 mm and for right side 3.93 ± 1.49 mm. Increase in mandibular thickness from anterior to posterior regions in both sides was observed and statistical difference was found among the different groups according to the measured region ( p < 0.05). The present results can predict the safety zone for the use of monocortical screws in the mandible, but the use of CT scan is imperative and individual analysis is desired owing to anatomical variations. Further studies with larger samples are necessary to confirm these data and should include other anatomic structures, different regions of mandible/maxilla, as well as other ethnic groups.
Effect of plasma grid bias on extracted currents in the RF driven surface-plasma negative ion source
Authors: Belchenko Yu. , Ivanov A. , Sanin A. , Sotnikov O. , Shikhovtsev I.
Published: October 2015

Extraction of negative ions from the large inductively driven surface-plasma negative ion source was studied. The dependencies of the extracted currents vs plasma grid (PG) bias potential were measured for two modifications of radio-frequency driver with and without Faraday screen, for different hydrogen feeds and for different levels of cesium conditioning. The maximal PG current was independent of driver modification and it was lower in the case of inhibited cesium. The maximal extracted negative ion current depends on the potential difference between the near-PG plasma and the PG bias potentials, while the absolute value of plasma potential in the driver and in the PG area is less important for the negative ion production. The last conclusion confirms the main mechanism of negative ion production through the surface conversion of fast atoms.
High voltage holding in the negative ion sources with cesium deposition
Authors: Belchenko Yu. , Abdrashitov G. , Ivanov A. , Sanin A. , Sotnikov O.
Published: October 2015

High voltage holding of the large surface-plasma negative ion source with cesium deposition was studied. It was found that heating of ion-optical system electrodes to temperature >100 °C facilitates the source conditioning by high voltage pulses in vacuum and by beam shots. The procedure of electrode conditioning and the data on high-voltage holding in the negative ion source with small cesium seed are described. The mechanism of high voltage holding improvement by depletion of cesium coverage is discussed.
Pseudospectra in non-Hermitian quantum mechanics
Authors: Krejčiřík D. , Siegl P. , Tater M. , Viola J.
Published: October 2015

We propose giving the mathematical concept of the pseudospectrum a central role in quantum mechanics with non-Hermitian operators. We relate pseudospectral properties to quasi-Hermiticity, similarity to self-adjoint operators, and basis properties of eigenfunctions. The abstract results are illustrated by unexpected wild properties of operators familiar from PT-symmetric quantum mechanics.
Inertial convection in a rotating narrow annulus: Asymptotic theory and numerical simulation
Authors: Zhang Keke , Liao Xinhao , Kong Dali
Published: October 2015

An important way of breaking the rotational constraint in rotating convection is to invoke fast oscillation through strong inertial effects which, referring to as inertial convection, is physically realizable when the Prandtl number Pr of rotating fluids is sufficiently small. We investigate, via both analytical and numerical methods, inertial convection in a Boussinesq fluid contained in a narrow annulus rotating rapidly about a vertical symmetry axis and uniformly heated from below, which can be approximately realizable in laboratory experiments [R. P. Davies-Jones and P. A. Gilman, “Convection in a rotating annulus uniformly heated from below,” J. Fluid Mech. 46, 65-81 (1971)]. On the basis of an assumption that inertial convection at leading order is represented by a thermal inertial wave propagating in either prograde or retrograde direction and that buoyancy forces appear at the next order to maintain the wave against the effect of viscous damping, we derive an analytical solution that describes the onset of inertial convection with the non-slip velocity boundary condition. It is found that there always exist two oppositely traveling thermal inertial waves, sustained by convection, that have the same azimuthal wavenumber, the same size of the frequency, and the same critical Rayleigh number but different spatial structure. Linear numerical analysis using a Galerkin spectral method is also carried out, showing a quantitative agreement between the analytical and numerical solutions when the Ekman number is sufficiently small. Nonlinear properties of inertial convection are investigated through direct three-dimensional numerical simulation using a finite-difference method with the Chorin-type projection scheme, concentrating on the liquid metal gallium with the Prandtl number Pr = 0.023. It is found that the interaction of the two counter-traveling thermal inertial waves leads to a time-dependent, spatially complicated, oscillatory convection even in the vicinity of the onset of inertial convection. The nonlinear properties are analyzed via making use of the mathematical completeness of inertial wave modes in a rotating narrow annulus, suggesting that the laminar to weakly turbulent transition is mainly caused by the nonlinear interaction of several inertial wave modes that are excited and maintained by thermal convection at moderately supercritical Rayleigh numbers.
Folding of small knotted proteins: Insights from a mean field coarse-grained model
Authors: Najafi Saeed , Potestio Raffaello
Published: October 2015

A small but relevant number of proteins whose native structure is known features nontrivial topology, i.e., they are knotted. Understanding the process of folding from a swollen unknotted state to the biologically relevant native conformation is, for these proteins, particularly difficult, due to their rate-limiting topological entanglement. To shed some light into this conundrum, we introduced a structure-based coarse-grained model of the protein, where the information about the folded conformation is encoded in bonded angular interactions only, which do not favor the formation of native contacts. A stochastic search scheme in parameter space is employed to identify a set of interactions that maximizes the probability to attain the knotted state. The optimal knotting pathways of the two smallest knotted proteins, obtained through this approach, are consistent with the results derived by means of coarse-grained as well as full atomistic simulations.
Angle dependent interlayer magnetoresistance in multilayer graphene stacks
Authors: Bodepudi S. C. , Wang Xiao , Pramanik S.
Published: October 2015

Interlayer magnetoresistance (ILMR) effect is explored in a vertical stack of weakly coupled multilayer graphene as grown by chemical vapor deposition. This effect has been characterized as a function of temperature and tilt angle of the magnetic field with respect to the interlayer current. To our knowledge, this is the first experimental report on angle dependent ILMR effect in graphitic systems. Our data agree qualitatively with the existing theories of ILMR in multilayer massless Dirac Fermion systems. However, a sharper change in ILMR has been observed as the tilt angle of the magnetic field is varied. A physical explanation of this effect is proposed, which is consistent with our experimental scenario.
A new reduced-order observer for the synchronization of nonlinear chaotic systems: An application to secure communications
Authors: Castro-Ramírez Joel , Martínez-Guerra Rafael , Cruz-Victoria Juan Crescenciano
Published: October 2015

This paper deals with the master-slave synchronization scheme for partially known nonlinear chaotic systems, where the unknown dynamics is considered as the master system and we propose the slave system structure which estimates the unknown states. It introduced a new reduced order observer, using the concept of Algebraic Observability; we applied the results to a Sundarapandian chaotic system, and by means of some numerical simulations we show the effectiveness of the suggested approach. Finally, the proposed observer is utilized for encryption, where encryption key is the master system and decryption key is the slave system.
The ISIS pre-injector reconfiguration
Authors: Wood T. , Faircloth D. C. , Lawrie S. R. , Letchford A. P. , Whitehead M. O. , Pike T. , Perkins M.
Published: October 2015

With the introduction of a new “low energy beams” group at ISIS, the decision was taken to expand the ion source area. This paper will explain what actions were taken, how this has improved the present working environment and how the space will be used to accommodate a medium energy beam transport (MEBT) section after the existing radio-frequency quadrupole. The MEBT will incorporate three 202.5 MHz re-bunching cavities and will achieve a transmission of 96% with minimal emittance growth.
Random attractors for the stochastic coupled fractional Ginzburg-Landau equation with additive noise
Authors: Shu Ji , Li Ping , Zhang Jia , Liao Ou
Published: October 2015

This paper is concerned with the stochastic coupled fractional Ginzburg-Landau equation with additive noise. We first transform the stochastic coupled fractional Ginzburg-Landau equation into random equations whose solutions generate a random dynamical system. Then we prove the existence of random attractor for random dynamical system.
Microwave emission from lead zirconate titanate induced by impulsive mechanical load
Authors: Aman A. , Majcherek S. , Hirsch S. , Schmidt B.
Published: October 2015

This paper focuses on microwave emission from Lead zirconate titanate Pb [ZrxTi1−x] O3 (PZT) induced by mechanical stressing. The mechanical stress was initiated by impact of a sharp tungsten indenter on the upper surface of PZT ceramic. The sequences of microwave and current impulses, which flew from indenter to electric ground, were detected simultaneously. The voltage between the upper and lower surface of ceramic was measured to obtain the behavior of mechanical force acting on ceramic during the impact. It was found that the amplitude, form, and frequency of measured microwave impulses were different by compression and restitution phase of impact. Two different mechanisms of electron emission, responsible for microwave impulse generation, were proposed based on the dissimilar impulse behavior. The field emission from tungsten indenter is dominant during compression, whereas ferroemission dominates during restitution phase. Indeed, it was observed that the direction of the current flow, i.e., sign of current impulses is changed by transitions from compression to restitution phase of impact. The observed dissimilar behavior of microwave impulses, caused by increasing and decreasing applied force, can be used to calculate the contact time and behavior of mechanical force during mechanical impact on ceramic surface. It is shown that the generation of microwave impulses exhibits high reproducibility, impulse intensity, a low damping factor, and high mechanical failure resistance. Based on these microwave emission properties of PZT, the development of new type of stress sensor with spatial resolution of few microns becomes possible.
Extraction of inhomogeneous broadening and nonradiative losses in InAs quantum-dot lasers
Authors: Chow Weng W. , Liu Alan Y. , Gossard Arthur C. , Bowers John E.
Published: October 2015

We present a method to quantify inhomogeneous broadening and nonradiative losses in quantum dot lasers by comparing the gain and spontaneous emission results of a microscopic laser theory with measurements made on 1.3 μm InAs quantum-dot lasers. Calculated spontaneous-emission spectra are first matched to those measured experimentally to determine the inhomogeneous broadening in the experimental samples. This is possible because treatment of carrier scattering at the level of quantum kinetic equations provides the homogeneously broadened spectra without use of free parameters, such as the dephasing rate. We then extract the nonradiative recombination current associated with the quantum-dot active region from a comparison of measured and calculated gain versus current relations.
Acoustic phonon spectrum and thermal transport in nanoporous alumina arrays
Authors: Kargar Fariborz , Ramirez Sylvester , Debnath Bishwajit , Malekpour Hoda , Lake Roger K. , Balandin Alexander A.
Published: October 2015

We report results of a combined investigation of thermal conductivity and acoustic phonon spectra in nanoporous alumina membranes with the pore diameter decreasing from D = 180 nm to 25 nm. The samples with the hexagonally arranged pores were selected to have the same porosity ϕ ≈ 13%. The Brillouin-Mandelstam spectroscopy measurements revealed bulk-like phonon spectrum in the samples with D = 180-nm pores and spectral features, which were attributed to spatial confinement, in the samples with 25-nm and 40-nm pores. The velocity of the longitudinal acoustic phonons was reduced in the samples with smaller pores. Analysis of the experimental data and calculated phonon dispersion suggests that both phonon-boundary scattering and phonon spatial confinement affect heat conduction in membranes with the feature sizes D < 40 nm.
Forced convection analysis for generalized Burgers nanofluid flow over a stretching sheet
Authors: Khan Masood , Khan Waqar Azeem
Published: October 2015

This article reports the two-dimensional forced convective flow of a generalized Burgers fluid over a linearly stretched sheet under the impacts of nano-sized material particles. Utilizing appropriate similarity transformations the coupled nonlinear partial differential equations are converted into a set of coupled nonlinear ordinary differential equations. The analytic results are carried out through the homotopy analysis method (HAM) to investigate the impact of various pertinent parameters for the velocity, temperature and concentration fields. The obtained results are presented in tabular form as well as graphically and discussed in detail. The presented results show that the rate of heat transfer at the wall and rate of nanoparticle volume fraction diminish with each increment of the thermophoresis parameter. While incremented values of the Brownian motion parameter lead to a quite opposite effect on the rates of heat transfer and nanoparticle volume fraction at the wall.
Achromatic THz absorption of conductive nanofilms
Authors: Yin Qiang , Li Sucheng , Tian Fa , Duan Qian , Lu Weixin , Hou Bo , Zheng Fengang , Shen Mingrong , Wang Xinke , Zhang Yan
Published: October 2015

According to the theory, an ultrathin conductive film can achromatically dissipate electromagnetic waves with frequency ranging from radio to terahertz. A moderate absorption effect, which gives rise to a maximal absorbance of 50%, can be found if an impedance matching condition is satisfied. We have experimentally demonstrated the frequency-irrelevant, maximal absorption by employing a conductive nanofilm and launching terahertz waves at Brewster angle when the sheet (square) resistance of the film meets the impedance matching condition. In the entire terahertz spectral range covered by our experiments, the frequency-independent optical properties were consistent with the theoretical calculations.
Patterns, causes, and consequences of marine larval dispersal
Authors: D’Aloia Cassidy C. , Bogdanowicz Steven M. , Francis Robin K. , Majoris John E. , Harrison Richard G. , Buston Peter M.
Published: October 2015

Significance

Networks of marine protected areas (MPAs) have been widely implemented to combat global population declines. Although their efficacy largely depends on larval exchange between populations, quantitative analyses of dispersal have been limited due to the difficulties of tracking larvae. Here, we systematically measure dispersal in the fish
Elacatinus lori
, producing the first robust estimate of a dispersal kernel. We find that dispersal declines exponentially, with most larvae traveling less than 2 km from their parents. Remarkably, the distance an individual travels is unrelated to the number of days it spends in the larval phase. These results suggest that simple distance-based models may be useful conservation tools and that MPAs that are close in space will accommodate short-distance dispersers.
Foxg1 localizes to mitochondria and coordinates cell differentiation and bioenergetics
Authors: Pancrazi Laura , Di Benedetto Giulietta , Colombaioni Laura , Della Sala Grazia , Testa Giovanna , Olimpico Francesco , Reyes Aurelio , Zeviani Massimo , Pozzan Tullio , Costa Mario
Published: October 2015

Significance

The correct interplay between mitochondria and nuclear functions is essential to generate the mature functional six-layered structure of the mammalian cerebral cortex. Thus, alteration in this interaction results in pathological conditions such as cancer or neurodevelopmental disorders. The molecules and signaling mechanisms responsible for the nucleus–mitochondria communication and functional coordination are still largely unknown. The here-reported nuclear and mitochondrial localization of Forkhead box g1 (Foxg1), a transcription factor essential for brain development and cerebral cortex layering, provides insights on the molecular mechanisms through which Foxg1 acts as a link among mitochondrial function, neuronal differentiation, and pathological conditions.