bluuebunny/crossref_metadata_2025 huggingface dataset:
MIG-seq: an effective PCR-based method for genome-wide single-nucleotide polymorphism genotyping using the next-generation sequencing platform
Authors: Suyama Yoshihisa , Matsuki Yu
Published: November 2015

Restriction-enzyme (RE)-based next-generation sequencing methods have revolutionized marker-assisted genetic studies; however, the use of REs has limited their widespread adoption, especially in field samples with low-quality DNA and/or small quantities of DNA. Here, we developed a PCR-based procedure to construct reduced representation libraries without RE digestion steps, representingde novosingle-nucleotide polymorphism discovery and its genotyping using next-generation sequencing. Using multiplexed inter-simple sequence repeat (ISSR) primers, thousands of genome-wide regions were amplified effectively from a wide variety of genomes, without prior genetic information. We demonstrated: 1) Mendelian gametic segregation of the discovered variants; 2) reproducibility of genotyping by checking its applicability for individual identification; and 3) applicability in a wide variety of species by checking standard population genetic analysis. This approach, called multiplexed ISSR genotyping by sequencing, should be applicable to many marker-assisted genetic studies with a wide range of DNA qualities and quantities.
Characterizing the transplanar and in-plane water transport properties of fabrics under different sweat rate: Forced Flow Water Transport Tester
Authors: Tang K. P. M. , Chau K. H. , Kan C. W. , Fan J. T.
Published: November 2015

The water absorption and transport properties of fabrics are critical to wear comfort, especially for sportswear and protective clothing. A new testing apparatus, namely Forced Flow Water Transport Tester (FFWTT), was developed for characterizing the transplanar and in-plane wicking properties of fabrics based on gravimetric and image analysis technique. The uniqueness of this instrument is that the rate of water supply is adjustable to simulate varying sweat rates with reference to the specific end-use conditions ranging from sitting, walking, running to other strenuous activities. This instrument is versatile in terms of the types of fabrics that can be tested. Twenty four types of fabrics with varying constructions and surface finishes were tested. The results showed that FFWTT was highly sensitive and reproducible in differentiating these fabrics and it suggests that water absorption and transport properties of fabrics are sweat rate-dependent. Additionally, two graphic methods were proposed to map the direction of liquid transport and its relation to skin wetness, which provides easy and direct comparison among different fabrics. Correlation analysis showed that FFWTT results have strong correlation with subjective wetness sensation, implying validity and usefulness of the instrument.
Robust Light State by Quantum Phase Transition in Non-Hermitian Optical Materials
Authors: Zhao Han , Longhi Stefano , Feng Liang
Published: November 2015

Robust light transport is the heart of optical information processing, leading to the search for robust light states by topological engineering of material properties. Here, it is shown that quantum phase transition, rather than topology, can be strategically exploited to design a novel robust light state. We consider an interface between parity-time (PT) symmetric media with different quantum phases and use complex Berry phase to reveal the associated quantum phase transition and topological nature. While the system possesses the same topological order within different quantum phases, phase transition from PT symmetry to PT breaking across the interface in the synthetic non-Hermitian metamaterial system facilitates novel interface states, which are robust against a variety of gain/loss perturbations and topological impurities and disorder. The discovery of the robust light state by quantum phase transition may promise fault-tolerant light transport in optical communications and computing.
Neuropeptides in the cerebral ganglia of the mud crab, Scylla paramamosain: transcriptomic analysis and expression profiles during vitellogenesis
Authors: Bao Chenchang , Yang Yanan , Huang Huiyang , Ye Haihui
Published: November 2015

Neuropeptides play a critical role in regulating animal reproduction. In vertebrates, GnRH, GnIH and kisspeptin are the key neuropeptide hormones of the reproductive axis, however, the reproductive axis for invertebrates is vague. Knowledge on ovarian development of the mud crab,Scylla paramamosain, is critical for aquaculture and resources management of the commercially important species. This study employed Illumina sequencing, reverse transcription-polymerase chain reaction and quantitative real-time PCR techniques to identify neuropeptides that may be involved in ovarian development ofS. paramamosain. A total of 32 neuropeptide transcripts from two dozen neuropeptide families, 100 distinct mature peptides were predicted from the transcriptome data of femaleS. paramamosaincerebral ganglia. Among them, two families,i.e.GSEFLamide and WXXXRamide, were first identified from the cerebral ganglia of crustaceans. Of these neuropeptides, 21 transcripts of interest were selected for further confirmation and all of them were detected in the cerebral ganglia, as well as in other nervous tissues and the ovary. Most of them also had differential expression in the cerebral ganglia during various vitellogenic stages, suggesting their likely involvement in regulating vitellogenesis and ovarian maturation. Overall, these findings provide an important basis for subsequent studies on peptide function in reproduction ofS. paramamosain.
The activity of protein phosphatase 5 towards native clients is modulated by the middle- and C-terminal domains of Hsp90
Authors: Haslbeck Veronika , Eckl Julia M. , Drazic Adrian , Rutz Daniel A. , Lorenz Oliver R. , Zimmermann Kerstin , Kriehuber Thomas , Lindemann Claudia , Madl Tobias , Richter Klaus
Published: November 2015

Protein phosphatase 5 is involved in the regulation of kinases and transcription factors. The dephosphorylation activity is modulated by the molecular chaperone Hsp90, which binds to the TPR-domain of protein phosphatase 5. This interaction is dependent on the C-terminal MEEVD motif of Hsp90. We show that C-terminal Hsp90 fragments differ in their regulation of the phosphatase activity hinting to a more complex interaction. Also hydrodynamic parameters from analytical ultracentrifugation and small-angle X-ray scattering data suggest a compact structure for the Hsp90-protein phosphatase 5 complexes. Using crosslinking experiments coupled with mass spectrometric analysis and structural modelling we identify sites, which link the middle/C-terminal domain interface of C. elegans Hsp90 to the phosphatase domain of the corresponding kinase. Studying the relevance of the domains of Hsp90 for turnover of native substrates we find that ternary complexes with the glucocorticoid receptor (GR) are cooperatively formed by full-length Hsp90 and PPH-5. Our data suggest that the direct stimulation of the phosphatase activity by C-terminal Hsp90 fragments leads to increased dephosphorylation rates. These are further modulated by the binding of clients to the N-terminal and middle domain of Hsp90 and their presentation to the phosphatase within the phosphatase-Hsp90 complex.
Measurement issues associated with quantitative molecular biology analysis of complex food matrices for the detection of food fraud
Authors: Burns Malcolm , Wiseman Gordon , Knight Angus , Bramley Peter , Foster Lucy , Rollinson Sophie , Damant Andrew , Primrose Sandy
Published: November 2015

A review of measurement issues associated with quantitative molecular analysis of complex food matrices for the detection of food fraud.
Assessment of photo-oxidative alterations to natural organic matter in water using fluorescence excitation emission matrices and liquid chromatography-organic carbon detection techniques
Authors: Bosire G. O. , Ngila J. C.
Published: November 2015

Fluorescence excitation emission matrices (FEEMs) and liquid chromatography-organic carbon detection (LC-OCD) are relatively novel techniques currently used for analysing natural organic matter (NOM) in water.
The morphology and spherulite growth of PLA stereocomplex in linear and branched PLLA/PDLA blends: effects of molecular weight and structure
Authors: Shao Jun , Guo Yanmei , Xiang Sheng , Zhou Dongdong , Bian Xinchao , Sun Jingru , Li Gao , Hou Haoqing
Published: November 2015

In the linear and three armed PLLA/PDLA blends, theGvalue increased firstly, then decreased asMn,PLAincreased, andGreduced as three armed PLAs added.
High resolution absolute absorption cross sections of the B̃1A′–X̃1A′ transition of the CH2OO biradical
Authors: Foreman Elizabeth S. , Kapnas Kara M. , Jou YiTien , Kalinowski Jarosław , Feng David , Gerber R. Benny , Murray Craig
Published: November 2015

Carbonyl oxides, or Criegee intermediates, are formed from the gas phase ozonolysis of alkenes and play a pivotal role in night-time and urban area atmospheric chemistry.
An experimental and theoretical study of core–valence double ionisation of acetaldehyde (ethanal)
Authors: Zagorodskikh S. , Vapa M. , Vahtras O. , Zhaunerchyk V. , Mucke M. , Eland J. H. D. , Squibb R. J. , Linusson P. , Jänkälä K. , Ågren H. , Feifel R.
Published: November 2015

Core–valence double ionisation spectra of acetaldehyde (ethanal) are presented at photon energies above the carbon and oxygen 1s ionisation edges, measured by a versatile multi-electron coincidence spectroscopy technique and analyzed by means of quantum chemical calculations of transition energies.
Path-dependent variational effects and multidimensional tunneling in multi-path variational transition state theory: rate constants calculated for the reactions of HO2 with tert-butanol by including all 46 paths for abstraction at C and all six paths for abstraction at O
Authors: Bao Junwei Lucas , Sripa Pattrawan , Truhlar Donald G.
Published: November 2015

Multi-path variational transition state theory (MP-VTST) provides a conformationally complete framework for calculating gas-phase rate constants.
Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions
Authors: Rasse-Suriani Federico A. O. , Paula Denofrio M. , Yañuk Juan G. , Micaela Gonzalez M. , Wolcan Ezequiel , Seifermann Marco , Erra-Balsells Rosa , Cabrerizo Franco M.
Published: November 2015

In water, chloroharmines follow very distinctive thermal and photochemical pH- and O2-dependent-reaction pathways.
A combined computational and experimental investigation of Mg doped α-Fe2O3
Authors: Kosa Monica , Barad Hannah Noa , Singh Vijay , Keller David A. , Shimanovich Klimentiy , Rühle Sven , Anderson Assaf Y. , Zaban Arie , Major Dan Thomas
Published: November 2015

A combined computational and experimental study explores electronic properties of Mg doped α-Fe2O3 using several complimentary computational and experimental techniques.
Rotational spectroscopy of the atmospheric photo-oxidation product o-toluic acid and its monohydrate
Authors: Schnitzler Elijah G. , Zenchyzen Brandi L. M. , Jäger Wolfgang
Published: November 2015

Pure rotational spectra of an atmospheric photo-oxidation product,o-toluic acid, and its monohydrate were measured, and the minimum energy conformers of both species were identified.
TiO2-modified CNx nanowires as a Pt electrocatalyst support with high activity and durability for the oxygen reduction reaction
Authors: Tang J. , Meng H. M.
Published: November 2015

A Pt/TiO2-modified carbon nitride nanofiber (Pt/TiO2-CNx) catalyst has been synthesized by a chemical method for the oxygen reduction reaction (ORR).
Nanostructured BN–Mg composites: features of interface bonding and mechanical properties
Authors: Kvashnin Dmitry G. , Krasheninnikov Arkady V. , Shtansky Dmitry , Sorokin Pavel B. , Golberg Dmitri
Published: November 2015

Using first-principles calculations, we investigate the stability and mechanical properties of a nanocomposite made of magnesium reinforced with boron nitride (BN) nanostructures (BN nanotubes and BN monolayers).
Phase transition metal–crown ether coordination compounds tuned by metal ions
Authors: Ye Qiong , Wang Hui-Ting , Zhou Lin , Kong Li-Hui , Ye Heng-Yun , Fu Da-Wei , Zhang Yi
Published: November 2015

(15-Crown-5)(BiCl3) and (15-crown-5)(SbCl3) are discovered to show phase transitions above room temperature, where the phase transition temperature relates to the metal center.
A pseudo-tetragonal tungsten bronze superstructure: a combined solution of the crystal structure of K6.4(Nb,Ta)36.3O94with advanced transmission electron microscopy and neutron diffraction
Authors: Paria Sena Robert , Babaryk Artem A. , Khainakov Sergiy , Garcia-Granda Santiago , Slobodyanik Nikolay S. , Van Tendeloo Gustaaf , Abakumov Artem M. , Hadermann Joke
Published: November 2015

K6.4Nb28.2Ta8.1O94has the same framework as literature's K2Nb8O21but a different distribution of cations over different channels.
Highly functionalizable penta-coordinate iron hydrogen production catalysts with low overpotentials
Authors: Eady Shawn C. , Breault Tanya , Thompson Levi , Lehnert Nicolai
Published: November 2015

Penta-coordinate iron complexes with ‘PNP’ diphosphine ligands, [Fe(S2C6H4)((C6H5)2PN(R)P(C6H5)2)CO], all air-stable FeII compounds, show electrocatalytic H2 production at low overpotentials (η = 0.09–0.21 V vs. Pt). These catalysts utilize an EC mechanism, where one-electron reduction triggers protonation by weak acids.
Copper(i) halide clusters based upon ferrocenylchalcogenoether ligands: donors, halides and semi-rigidity effects on the geometry and catalytic activity
Authors: Ji Wei , Qu Jian , Jing Su , Zhu Dunru , Huang Wei
Published: November 2015

Six copper(i) clusters based on ferrocenylchalcogenoethers with different nuclearities and geometries were prepared. Telluroether-based cluster2effectively catalyzes the C–N cross-coupling reaction.
Br2 induced oxidative pore modification of a porous coordination network
Authors: Ohtsu Hiroyoshi , Kawano Masaki
Published: November 2015

Iodinated pores of a Zn-based coordination network were modified by Br2 oxidation to produce brominated pores in a polycrystalline-to-polycrystalline manner while maintaining the same network topology.
Conformational thermodynamics guided structural reconstruction of biomolecular fragments
Authors: Sikdar Samapan , Chakrabarti J. , Ghosh Mahua
Published: November 2015

Conformational thermodynamics compares the modeling protocols to identify the conformation of the missing region leading to a suitable model for metal ion free (apo) skeletal muscle Troponin C.
High resolution metabolomics technology reveals widespread pathway changes of alcoholic liver disease
Authors: Zhang Aihua , Yan Guangli , Zhou Xiaohang , Wang Yangyang , Han Ying , Guan Yu , Sun Hui , Wang Xijun
Published: November 2015

The current study provides insights into the molecular mechanisms of ALD from widespread pathway changes.
The contribution of polar C–H hydrogen bonds to anion binding
Authors: Choi Yusun , Kim Taehoon , Jang Soonmin , Kang Jongmin
Published: November 2015

Binding abilities depend on the magnitude of C–H polarization.
Self-assembly of the polyoxometalate–cholesterol conjugate into microrods or nanoribbons regulated by thermodynamics
Authors: Yang Hai-Kuan , Ren Li-Jun , Wu Han , Wang Wei
Published: November 2015

The self-assembly of the polyoxometalate–cholesterol conjugate can be well controlled and regulated by means of a temperature-mediated approach.
The synthesis and characterization of tributyl phosphate grafted carbon nanotubes by the floating catalytic chemical vapor deposition method and their sorption behavior towards uranium
Authors: Mishra Shruti , Dwivedi Jaya , Kumar Amar , Sankararamakrishnan Nalini
Published: November 2015

An efficient method for grafting tributylphosphate onto carbon nanotubes (CNT-TBP) is described. CNT-TBP exhibited excellent adsorption towards U(vi) ions.
Gd-based upconversion nanocarriers with yolk–shell structure for dual-modal imaging and enhanced chemotherapy to overcome multidrug resistance in breast cancer
Authors: Pan Yuanwei , Zhang Ling'e , Zeng Leyong , Ren Wenzhi , Xiao Xueshan , Zhang Jichao , Zhang Lili , Li Aiguo , Lu Guangming , Wu Aiguo
Published: November 2015

Gd-based yolk–shell nanocomposites were used for dual-modal imaging of near-infrared-responsive upconversion luminescence and magnetic resonance, and enhanced chemotherapy.
Tuning photoluminescence and surface properties of carbon nanodots for chemical sensing
Authors: Zhang Zhaomin , Pan Yi , Fang Yaning , Zhang Lulu , Chen Junying , Yi Changqing
Published: November 2015

fCDs with tunable photoluminescence are synthesized by controlling surface passivation reactions, and demonstrated for Fe3+ determination in a complicated biological environment.
Confinement induced ordering in dewetting of ultra-thin polymer bilayers on nanopatterned substrates
Authors: Bhandaru Nandini , Das Anuja , Mukherjee Rabibrata
Published: November 2015

We report the dewetting of a thin bilayer of polystyrene (PS) and poly(methylmethacrylate) (PMMA) on a topographically patterned nonwettable substrate comprising an array of pillars, arranged in a square lattice.
An azo-linked porous triptycene network as an absorbent for CO2 and iodine uptake
Authors: Dang Qin-Qin , Wang Xiao-Min , Zhan Yu-Fen , Zhang Xian-Ming
Published: November 2015

An azo-linked porous organic framework (Azo-Trip) in which triptycene is incorporated as linkage, has been constructed via a facile Zn-induced reductive homocoulping reaction. The Azo-Trip exhibits selective carbon dioxide uptake and excellent iodine uptake in vapour and liquid phase.
Phosgene-free synthesis of non-ionic hydrophilic polyserine
Authors: Yang Zhening , Mao Zhengwei , Ling Jun
Published: November 2015

Non-ionic water-soluble poly-dl-serine (PSer) was synthesized from an activated urethane-type derivative of serine.
Electrochemical performances of CoFe2O4 nanoparticles and a rGO based asymmetric supercapacitor
Authors: Sankar K. Vijaya , Selvan R. Kalai , Meyrick Danielle
Published: November 2015

CoFe2O4 nanoparticles were prepared using a polyethylene glycol (PEG) assisted solution combustion method.
Preparation of anion exchange resin by recycling of waste printed circuit boards
Authors: Zhang Jianqiu , Liu Songhang , Chen Jinyang , Zu Jianhua , Wang Yangjun
Published: November 2015

The treatment of the non-metal components of waste printed circuit boards (WPCBs) is very difficult because they are inflexible and insoluble, and thus a new method to convert them into anion exchange resin was studied.
Hierarchal multi-lamellar silica vesicle clusters synthesized through self-assembly and mineralization
Authors: Yao Yuan , Feng Ji , Han Lu , Che Shunai
Published: November 2015

Novel hierarchal silica clusters composed of multi-lamellar silica vesicles were prepared through self-assembly and mineralization.
In silico design of adamantane derived organic superbases with an extended hydrogen bond network and their use as molecular containers for the storage of H2 and CO2
Authors: Khamaru Krishnendu , Ganguly Bishwajit
Published: November 2015

DFT calculations predicted that amine substituted adamantane derivatives can function as organic superbases and can be used for gas storage.
Synthesis and characterisation of MOF/ionic liquid/chitosan mixed matrix membranes for CO2/N2 separation
Authors: Casado-Coterillo Clara , Fernández-Barquín Ana , Zornoza Beatriz , Téllez Carlos , Coronas Joaquín , Irabien Ángel
Published: November 2015

The CO2 permeability and CO2/N2 selectivity of IL–CS membranes is improved by adding nano-HKUST-1 and ZIF-8, and predicted accurately by Maxwell-derived model as a function of interfacial contact, crystallinity and pore blockage with temperature.
Facile synthesis of a g-C3N4 isotype composite with enhanced visible-light photocatalytic activity
Authors: Shi Lei , Liang Lin , Wang Fangxiao , Liu Mengshuai , Sun Jianmin
Published: November 2015

A novel metal-free g-C3N4 isotype composite was successfully prepared and presents significant enhancement in the photocatalytic activity.
Enhanced amplified spontaneous emission from morphology-controlled organic–inorganic halide perovskite films
Authors: Qin Liang , Lv Longfeng , Ning Yu , Li Chunhai , Lu Qipeng , Zhu Lijie , Hu Yufeng , Lou Zhidong , Teng Feng , Hou Yanbing
Published: November 2015

Perovskite films with well-controlled crystallinity and morphology in a modified sequential deposition process by using solvent mixtures, involving DMF and DMSO, exhibit excellent ASE performances with threshold of 54.10 μJ cm−2 and FWHM of 8.16 nm.
Adsorption of perrhenate ion by bio-char produced from Acidosasa edulis shoot shell in aqueous solution
Authors: Hu Hui , Jiang Bangqiang , Zhang Jubin , Chen Xiaohui
Published: November 2015

Acidosasa edulisshoot shell bio-char can act as an effective adsorbent for perrhenate ions with an adsorption capacity of 14.6 mg g−1.
Towards graphane field emitters
Authors: Ding Shuyi , Cole Matthew T. , Li Chi , Zhou Yanhuai , Collins Clare M. , Kang Moon H. , Parmee Richard J. , Lei Wei , Zhang Xiaobing , Dai Qing , Milne William I. , Wang Baoping
Published: November 2015

Here we report on the improved field emission performance of graphene foam (GF) following transient exposure to hydrogen plasma.
Electro-sensing base for mefenamic acid on a 5% barium-doped zinc oxide nanoparticle modified electrode and its analytical application
Authors: Bukkitgar S. D. , Shetti N. P. , Kulkarni R. M. , Nandibewoor S. T.
Published: November 2015

In the present work, surface enhanced electro-oxidation of mefenamic acid (MFA) at a glassy carbon electrode modified with 5% barium doped ZnO nanoparticles was studied.
Structural characterization of Ag-doped TiO2 with enhanced photocatalytic activity
Authors: Santos Lidiaine M. , Machado Werick A. , França Marcela D. , Borges Karen A. , Paniago Roberto M. , Patrocinio Antonio O. T. , Machado Antonio E. H.
Published: November 2015

Ag-doped TiO2 nanoparticles with different metallic content (0.5, 2.0, and 5.0% m/m) were prepared using a simple and cost-effective method based on a sol–gel technique, followed by thermal treatment.
A RET-supported logic gate combinatorial library to enable modeling and implementation of intelligent logic functions
Authors: Gao Ru-Ru , Shi Shuo , Zhu Ying , Huang Hai-Liang , Yao Tian-Ming
Published: November 2015

A logic gate combinatorial library, including basic logic gates, a single three-input NOR gate, and combinatorial gates to realize intelligent logic functions (keypad-lock, parity checker) is constructed.
A self-reporting AIE probe with a built-in singlet oxygen sensor for targeted photodynamic ablation of cancer cells
Authors: Yuan Youyong , Zhang Chong-Jing , Xu Shidang , Liu Bin
Published: November 2015

A probe for the in situ monitoring of singlet oxygen generation during targeted theranostic photodynamic therapy is developed based on a photosensitizer with aggregation-induced emission (AIE) characteristics and conjugated to a fluorogenic rhodol dye via a singlet oxygen cleavable linker.
An ultrasensitive near-infrared ratiometric fluorescent probe for imaging mitochondrial polarity in live cells and in vivo
Authors: Xiao Haibin , Li Ping , Zhang Wei , Tang Bo
Published: November 2015

We describe a new mitochondria-targeting fluorescent probeMCY-BF2that is singularly sensitive and specifically responsive to mitochondrial polarity.
Nonlinear elasticity of disordered fiber networks
Authors: Feng Jingchen , Levine Herbert , Mao Xiaoming , Sander Leonard M.
Published: November 2015

Phase diagrams for striking nonlinear elasticity of fiber networks.
Hierarchical porous carbon microtubes derived from willow catkins for supercapacitor applications
Authors: Xie Lijing , Sun Guohua , Su Fangyuan , Guo Xiaoqian , Kong Qingqiang , Li Xiaoming , Huang Xianhong , Wan Liu , song Wen , Li Kaixi , Lv Chunxiang , Chen Cheng-Meng
Published: November 2015

Hierarchical porous carbon microtubes derived from willow catkins exhibited excellent electrochemical performances in both aqueous and organic electrolytes.
Improved thermal stability and retention properties of Cu–Te based CBRAM by Ge alloying
Authors: Devulder Wouter , Opsomer Karl , Rampelberg Geert , De Schutter Bob , Devloo-Casier Kilian , Jurczak Malgorzata , Goux Ludovic , Detavernier Christophe
Published: November 2015

Ge alloyed Cu–Te thin films showing improved thermal stability and enhanced retention properties when implemented as a cation supply layer in conductive bridge random access memory cells.
Long wavelength AIEgen of quinoline-malononitrile
Authors: Guo Zhiqian , Shao Andong , Zhu Wei-Hong
Published: November 2015

In this Highlight, we summarize some recent advances in the area of red to near-infrared fluorescent AIE-active organic materials via tailoring the building block of quinoline-malononitrile (QM), and its application in bioimaging.
Robust time‐spread echo watermarking using characteristics of host signals
Authors: Hu Peng , Peng Dezhong , Yi Zhang , Xiang Yong
Published: November 2015

A robust audio watermarking method based on the time‐spread (TS) echo hiding scheme is proposed. Compared with existing TS watermarking methods, the approach is more robust as it exploits the characteristics of host signals in the encoding stage. Theoretical analysis and simulation examples demonstrate the effectiveness and advantages of the method.
Parallel concatenated systematic polar codes
Authors: Wu Dongsheng , Liu Aijun , Zhang Yingxian , Zhang Qingshuang
Published: November 2015

A parallel concatenated coding structure, which can improve the performance of polar codes in finite‐length regime, is proposed. In the proposed structure, the encoder is built using two systematic polar codes (SPCs), and the decoder adopts iterative belief propagation decoding algorithm. Numerical results in the binary‐input additive white Gaussian noise channel indicate that the proposed coding scheme can improve BER performance of polar codes significantly. Specially, BER of the proposed coding scheme with length 192 is almost equal to that of original SPCs with length 256, when the code rate is 1/3.
Vibrationally resolved NEXAFS at C and N K-edges of pyridine, 2-fluoropyridine and 2,6-difluoropyridine: A combined experimental and theoretical assessment
Authors: Baiardi Alberto , Mendolicchio Marco , Barone Vincenzo , Fronzoni Giovanna , Cardenas Jimenez Gustavo Adolfo , Stener Mauro , Grazioli Cesare , de Simone Monica , Coreno Marcello
Published: November 2015

In the present work, the near edge X-ray absorption spectroscopy (NEXAFS) spectra at both C and N K-edges of pyridine, 2-fluoropyridine, and 2,6-difluoropyridine have been studied both experimentally and theoretically. From an electronic point of view, both transition potential density functional theory and time-dependent density functional theory approaches lead to reliable results provided that suitable basis sets and density functionals are employed. In this connection, the global hybrid B3LYP functional in conjunction with the EPR-III basis set appears particularly suitable after constant scaling of the band positions. For the N K-edge, vertical energies obtained at these levels and broadened by symmetric Gaussian distributions provide spectra in reasonable agreement with the experiment. Vibronic contributions further modulate the band-shapes leading to a better agreement with the experimental results, but are not strictly necessary for semi-quantitative investigations. On the other hand, vibronic contributions are responsible for strong intensity redistribution in the NEXAFS C K-edge spectra, and their inclusion is thus mandatory for a proper description of experiments. In this connection, the simple vertical gradient model is particularly appealing in view of its sufficient reliability and low computational cost. For more quantitative results, the more refined vertical Hessian approach can be employed, and its effectiveness has been improved thanks to a new least-squares fitting approach.
Conformation of a flexible polymer in explicit solvent: Accurate solvation potentials for Lennard-Jones chains
Authors: Taylor Mark P. , Ye Yuting , Adhikari Shishir R.
Published: November 2015

The conformation of a polymer chain in solution is coupled to the local structure of the surrounding solvent and can undergo large changes in response to variations in solvent density and temperature. The many-body effects of solvent on the structure of an n-mer polymer chain can be formally mapped to an exact n-body solvation potential. Here, we use a pair decomposition of this n-body potential to construct a set of two-body potentials for a Lennard-Jones (LJ) polymer chain in explicit LJ solvent. The solvation potentials are built from numerically exact results for 5-mer chains in solvent combined with an approximate asymptotic expression for the solvation potential between sites that are distant along the chain backbone. These potentials map the many-body chain-in-solvent problem to a few-body single-chain problem and can be used to study a chain of arbitrary length, thereby dramatically reducing the computational complexity of the polymer chain-in-solvent problem. We have constructed solvation potentials at a large number of state points across the LJ solvent phase diagram including the vapor, liquid, and super-critical regions. We use these solvation potentials in single-chain Monte Carlo (MC) simulations with n ≤ 800 to determine the size, intramolecular structure, and scaling behavior of chains in solvent. To assess our results, we have carried out full chain-in-solvent MC simulations (with n ≤ 100) and find that our solvation potential approach is quantitatively accurate for a wide range of solvent conditions for these chain lengths.
Exact period-four solutions of a family of n-dimensional quadratic maps via harmonic balance and Gröbner bases
Authors: D'Amico María Belén , Calandrini Guillermo L.
Published: November 2015

Analytical solutions of the period-four orbits exhibited by a classical family of n-dimensional quadratic maps are presented. Exact expressions are obtained by applying harmonic balance and Gröbner bases to a single-input single-output representation of the system. A detailed study of a generalized scalar quadratic map and a well-known delayed logistic model is included for illustration. In the former example, conditions for the existence of bistability phenomenon are also introduced.
Beam emittance reduction during operation of Indus-2
Authors: Fakhri Ali Akbar , Kant Pradeep , Ghodke A. D. , Singh Gurnam
Published: November 2015

Indus-2 storage ring is a 2.5 GeV third generation synchrotron radiation source. This source was commissioned using a moderate optics. Beam injection was accomplished using an off momentum electron beam to avoid difficulties faced in storage of beam at 550 MeV. The injection procedure and relevant beam dynamical studies are discussed. The switch over from the moderate optics to low emittance optics is done at 2.5 GeV after storing the electron beam. The procedure evolved to reduce the beam emittance and its implementation during the operation is discussed.
A Hamiltonian five-field gyrofluid model
Authors: Keramidas Charidakos I. , Waelbroeck F. L. , Morrison P. J.
Published: November 2015

A Lie-Poisson bracket is presented for a five-field gyrofluid model, thereby showing the model to be Hamiltonian. The model includes the effects of magnetic field curvature and describes the evolution of the electron and ion gyro-center densities, the parallel component of the ion and electron velocities, and the ion temperature. The quasineutrality property and Ampère's law determine, respectively, the electrostatic potential and magnetic flux. The Casimir invariants are presented, and shown to be associated with five Lagrangian invariants advected by distinct velocity fields. A linear, local study of the model is conducted both with and without Landau and diamagnetic resonant damping terms. Stability criteria and dispersion relations for the electrostatic and the electromagnetic cases are derived and compared with their analogs for fluid and kinetic models.
Large magneto-conductance and magneto-electroluminescence in exciplex-based organic light-emitting diodes at room temperature
Authors: Ling Yongzhou , Lei Yanlian , Zhang Qiaoming , Chen Lixiang , Song Qunliang , Xiong Zuhong
Published: November 2015

In this work, we report on large magneto-conductance (MC) over 60% and magneto-electroluminescence (MEL) as high as 112% at room temperature in an exciplex-based organic light-emitting diode (OLED) with efficient reverse intersystem crossing (ISC). The large MC and MEL are individually confirmed by the current density-voltage characteristics and the electroluminescence spectra under various magnetic fields. We proposed that this type of magnetic field effect (MFE) is governed by the field-modulated reverse ISC between the singlet and triplet exciplex. The temperature-dependent MFEs reveal that the small activation energy of reverse ISC accounts for the large MFEs in the present exciplex-based OLEDs.
Diversity of solitons in a generalized nonlinear Schrödinger equation with self-steepening and higher-order dispersive and nonlinear terms
Authors: Fujioka J. , Espinosa A.
Published: November 2015

In this article, we show that if the nonlinear Schrödinger (NLS) equation is generalized by simultaneously taking into account higher-order dispersion, a quintic nonlinearity, and self-steepening terms, the resulting equation is interesting as it has exact soliton solutions which may be (depending on the values of the coefficients) stable or unstable, standard or “embedded,” fixed or “moving” (i.e., solitons which advance along the retarded-time axis). We investigate the stability of these solitons by means of a modified version of the Vakhitov-Kolokolov criterion, and numerical tests are carried out to corroborate that these solitons respond differently to perturbations. It is shown that this generalized NLS equation can be derived from a Lagrangian density which contains an auxiliary variable, and Noether's theorem is then used to show that the invariance of the action integral under infinitesimal gauge transformations generates a whole family of conserved quantities. Finally, we study if this equation has the Painlevé property.
Modeling competitive substitution in a polyelectrolyte complex
Authors: Peng B. , Muthukumar M.
Published: November 2015

We have simulated the invasion of a polyelectrolyte complex made of a polycation chain and a polyanion chain, by another longer polyanion chain, using the coarse-grained united atom model for the chains and the Langevin dynamics methodology. Our simulations reveal many intricate details of the substitution reaction in terms of conformational changes of the chains and competition between the invading chain and the chain being displaced for the common complementary chain. We show that the invading chain is required to be sufficiently longer than the chain being displaced for effecting the substitution. Yet, having the invading chain to be longer than a certain threshold value does not reduce the substitution time much further. While most of the simulations were carried out in salt-free conditions, we show that presence of salt facilitates the substitution reaction and reduces the substitution time. Analysis of our data shows that the dominant driving force for the substitution process involving polyelectrolytes lies in the release of counterions during the substitution.
Resonant magnetoelectric response of composite cantilevers: Theory of short vs. open circuit operation and layer sequence effects
Authors: Krantz Matthias C. , Gugat Jascha L. , Gerken Martina
Published: November 2015

The magnetoelectric effect in layered composite cantilevers consisting of strain coupled layers of magnetostrictive (MS), piezoelectric (PE), and substrate materials is investigated for magnetic field excitation at bending resonance. Analytic theories are derived for the transverse magnetoelectric (ME) response in short and open circuit operation for three different layer sequences and results presented and discussed for the FeCoBSi-AlN-Si and the FeCoBSi-PZT-Si composite systems. Response optimized PE-MS layer thickness ratios are found to greatly change with operation mode shifting from near equal MS and PE layer thicknesses in the open circuit mode to near vanishing PE layer thicknesses in short circuit operation for all layer sequences. In addition the substrate layer thickness is found to differently affect the open and short circuit ME response producing shifts and reversal between ME response maxima depending on layer sequence. The observed rich ME response behavior for different layer thicknesses, sequences, operating modes, and PE materials can be explained by common neutral plane effects and different elastic compliance effects in short and open circuit operation.
Nonmonotonous electron mobility due to structurally induced resonant coupling of subband states in an asymmetric double quantum well
Authors: Nayak R. K. , Das S. , Panda A. K. , Sahu T.
Published: November 2015

We show that sharp nonmonotic variation of low temperature electron mobility μ can be achieved in GaAs/AlxGa1-xAs barrier delta-doped double quantum well structure due to quantum mechanical transfer of subband electron wave functions within the wells. We vary the potential profile of the coupled structure as a function of the doping concentration in order to bring the subbands into resonance such that the subband energy levels anticross and the eigen states of the coupled structure equally share both the wells thereby giving rise to a dip in mobility. When the wells are of equal widths, the dip in mobility occurs under symmetric doping of the side barriers. In case of unequal well widths, the resonance can be obtained by suitable asymmetric variation of the doping concentrations. The dip in mobility becomes sharp and also the wavy nature of mobility takes a rectangular shape by increasing the barrier width. We show that the dip in mobility at resonance is governed by the interface roughness scattering through step like changes in the subband mobilities. It is also gratifying to show that the drop in mobility at the onset of occupation of second subband is substantially supressed through the quantum mechanical transfer of subband wave functions between the wells. Our results can be utilized for performance enhancement of coupled quantum well devices.
Structural and magnetic anisotropy in the epitaxial FeV2O4 (110) spinel thin films
Authors: Shi Xiaolan , Wang Yuhang , Zhao Kehan , Liu Na , Sun Gaofeng , Zhang Liuwan
Published: November 2015

The epitaxial 200-nm-thick FeV2O4(110) films on (110)-oriented SrTiO3, LaAlO3 and MgAl2O4 substrates were fabricated for the first time by pulsed laser deposition, and the structural, magnetic, and magnetoresistance anisotropy were investigated systematically. All the films are monoclinic, whereas its bulk is cubic. Compared to FeV2O4 single crystals, films on SrTiO3 and MgAl2O4 are strongly compressively strained in [001] direction, while slightly tensily strained along normal [110] and in-plane [11¯0] directions. In contrast, films on LaAlO3 are only slightly distorted from cubic. The magnetic hard axis is in <001> direction, while the easier axis is along normal [110] direction for films on SrTiO3 and MgAl2O4, and in-plane [11¯0] direction for films on LaAlO3. Magnetoresistance anisotropy follows the magnetization. The magnetic anisotropy is dominated by the magnetocrystalline energy, and tuned by the magneto-elastic coupling.
Theoretical study of the gaseous hydrolysis of NO2 in the presence of NH3 as a source of atmospheric HONO
Authors: Wang Xu , Bai Feng-Yang , Sun Yan-Qiu , Wang Rong-Shun , Pan Xiu-Mei , Tao Fu-Ming
Published: November 2015

Environmental context
Nitrous acid is an important atmospheric trace gas, but the sources and the chemical mechanisms of its production are not well understood. This study explores the effects of ammonia and water on the hydrolysis of nitrogen dioxide and nitrous acid production. The calculated results show that ammonia is more effective than water in promoting the hydrolysis reaction of nitrogen dioxide.

Abstract
The effects of ammonia and water molecules on the hydrolysis of nitrogen dioxide as well as product accumulation are investigated by theoretical calculations of three series of the molecular clusters 2NO2–mH2O (m=1–3), 2NO2–mH2O–NH3 (m=1, 2) and 2NO2–mH2O–2NH3 (m=1, 2). The gas-phase reaction 2NO2 + H2O → HONO + HNO3 is thermodynamically unfavourable. The additional water or ammonia in the clusters can not only stabilise the products by forming stable complexes, but also reduce the energy barrier for the reaction. There is a considerable energy barrier for the reaction at the reactant cluster 2NO2–H2O: 11.7kcalmol–1 (1kcalmol–1=4.18kJmol–1). With ammonia and an additional water in the cluster, 2NO2–H2O–NH3, the thermodynamically stable products t-HONO + NH4NO3–H2O can be formed without an energy barrier. With two ammonia molecules, as in the cluster 2NO2–mH2O–2NH3 (m=1, 2), the reaction is barrierless and the product complex NH4NO2–NH4NO3 is further stabilised. The present study, including natural bond orbital analysis on a series of species, shows that ammonia is more effective than water in promoting the hydrolysis reaction of NO2. The product cluster NH4NO2–NH4NO3 resembles an alternating layered structure containing the ion units NH4+NO2– and NH4+NO3–. The decomposition processes of NH4NO2–NH4NO3 and its monohydrate are all spontaneous and endothermic.
Lead–radium dating of Pacific cod (Gadus macrocephalus) – validation of the young-fish scenario
Authors: Andrews Allen H.
Published: November 2015

Age readers disagree on the age reading interpretation of otolith growth patterns for the Pacific cod (Gadus macrocephalus). One interpretation describes a young-fish scenario with a life span near 10–12 years, whereas another interpretation describes an old-fish scenario at more than 30 years. In this study, lead–radium dating was performed on Pacific cod otoliths to test the validity of the old-fish age reading scenario. Radiometric ages revealed that the young-fish scenario was valid because the actual age of the two oldest adult groups was more than 20 years younger than estimated by the old-fish scenario.
Spatio-temporal spawning patterns of two riverine populations of the threatened Macquarie perch (Macquaria australasica)
Authors: Tonkin Zeb , Kearns Joanne , O'Mahony Justin , Mahoney John
Published: November 2015

Understanding species-reproduction dynamics is vital for the management of riverine fish. Information on the spawning ecology of the endangered Australian Macquarie perch (Macquaria australasica) is based largely on data gathered from lacustrine populations, with uncertainty on the applicability such data has for managing riverine populations. The current study presents a first description of spawning patterns of two riverine populations of Macquarie perch in Victoria, Australia, using egg counts recorded across multiple sites and periods within the species core spawning window. Spawning intensity was highly variable between study sites, with 96 and 82% of eggs collected from a single site in the King Parrot Creek and Yarra River respectively. We also found a strong positive association between spawning and water temperature. Our results provide an important account of spatio-temporal spawning patterns of riverine Macquarie perch populations and lend some support for the transfer of information from lacustrine populations (as demonstrated by spawning habitat and temperature association). Although the spatial and temporal constraints of the present study must be considered, the results provide opportunity for further testing of the environmental effects, and management options aimed at enhancing spawning of this endangered species.
Tattvabodhaand the hierarchical necessity of Abraham Maslow
Authors: Hayashi Jr. Paulo
Published: November 2015

The problems of modern man may be related with the difficulty in understanding human nature and its motivations. The Vedic textTattvabodhaby Sankaracharya as well as Maslow’s Hierarchy of Needs help us to better understand human being and its motives. The purpose of this essay is to articulate an approximation betweenTattvabodhaand the Hierarchy of Needs. The benefits are that such dialog allows a better understanding of each text, separately and jointly. For Sankaracharya, man is constituted by five layers: food, energy, lower mind, higher mind, and happiness. On the other hand, for Maslow, there are eight needs which may be separated into deficit needs and higher needs. The layers related to food and physiological needs are very close, as well as happiness and self-actualization and transcendence needs.
Estimating group size from human speech: Three's a conversation, but four's a crowd
Authors: Vitevitch Michael S. , Siew Cynthia S. Q.
Published: November 2015

Much previous research has examined various aspects of auditory processing, including the localization of sounds, and the influence of lexical and indexical information on language processing. In the present set of experiments we explored the ability of listeners to estimate the number of speakers in a group solely from the information in an auditory signal. The bound on accurately estimating the number of simultaneous speakers is 3. We suggest that subitization—the ability to estimate numerosity of visual and auditory elements without explicitly counting these elements—rather than the capacity of short-term memory, may underlie this limitation. The cognitive constraint on estimating the number of simultaneous speakers may have implications for a wide variety of seemingly unrelated psychological phenomena.
Resonant microchannel volume and mass measurements show that suspended cells swell during mitosis
Authors: Son Sungmin , Kang Joon Ho , Oh Seungeun , Kirschner Marc W. , Mitchison T.J. , Manalis Scott
Published: November 2015

Osmotic regulation of intracellular water during mitosis is poorly understood because methods for monitoring relevant cellular physical properties with sufficient precision have been limited. Here we use a suspended microchannel resonator to monitor the volume and density of single cells in suspension with a precision of 1% and 0.03%, respectively. We find that for transformed murine lymphocytic leukemia and mouse pro–B cell lymphoid cell lines, mitotic cells reversibly increase their volume by more than 10% and decrease their density by 0.4% over a 20-min period. This response is correlated with the mitotic cell cycle but is not coupled to nuclear osmolytes released by nuclear envelope breakdown, chromatin condensation, or cytokinesis and does not result from endocytosis of the surrounding fluid. Inhibiting Na-H exchange eliminates the response. Although mitotic rounding of adherent cells is necessary for proper cell division, our observations that suspended cells undergo reversible swelling during mitosis suggest that regulation of intracellular water may be a more general component of mitosis than previously appreciated.