bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental demonstration of a quantum router
Authors: Yuan X. X. , Ma J.-J. , Hou P.-Y. , Chang X.-Y. , Zu C. , Duan L.-M.
Published: July 2015

The router is a key element for a network. We describe a scheme to realize genuine quantum routing of single-photon pulses based on cascading of conditional quantum gates in a Mach-Zehnder interferometer and report a proof-of-principle experiment for its demonstration using linear optics quantum gates. The polarization of the control photon routes in a coherent way the path of the signal photon while preserving the qubit state of the signal photon represented by its polarization. We demonstrate quantum nature of this router by showing entanglement generated between the initially unentangled control and signal photons and confirm that the qubit state of the signal photon is well preserved by the router through quantum process tomography.
Cultural differences in ant-dipping tool length between neighbouring chimpanzee communities at Kalinzu, Uganda
Authors: Koops Kathelijne , Schöning Caspar , Isaji Mina , Hashimoto Chie
Published: July 2015

Cultural variation has been identified in a growing number of animal species ranging from primates to cetaceans. The principal method used to establish the presence of culture in wild populations is the method of exclusion. This method is problematic, since it cannot rule out the influence of genetics and ecology in geographically distant populations. A new approach to the study of culture compares neighbouring groups belonging to the same population. We applied this new approach by comparing ant-dipping tool length between two neighbouring communities of chimpanzees (Pan troglodytes schweinfurthii) in the Kalinzu Forest, Uganda. Ant-dipping tool length varies across chimpanzee study sites in relation to army ant species (Dorylusspp.) and dipping location (nest vs. trail). We compared the availability of army ant species and dipping tool length between the two communities. M-group tools were significantly longer than S-group tools, despite identical army ant target species availabilities. Moreover, tool length in S-group was shorter than at all other sites where chimpanzees prey on epigaeic ants at nests. Considering the lack of ecological differences between the two communities, the tool length difference appears to be cultural. Our findings highlight how cultural knowledge can generate small-scale cultural diversification in neighbouring chimpanzee communities.
A Novel Serum 4-microRNA Signature for Lung Cancer Detection
Authors: Nadal Ernest , Truini Anna , Nakata Asuka , Lin Jules , Reddy Rishindra M. , Chang Andrew C. , Ramnath Nithya , Gotoh Noriko , Beer David G. , Chen Guoan
Published: July 2015

The aim of this study was to identify differentially-expressed miRNAs in the serum of non-small cell lung cancer (NSCLC) patients that might be a clinically-useful tool for lung cancer early detection. We performed miRNA expression profile analysis using TaqMan OpenArray Human panel in a discovery set of 70 serum samples obtained at lung tumor resection and 22 non-cancer subjects (NC). Selected serum miRNAs were then validated by quantitative PCR using an independent validation set of serum samples from LC patients (n = 84) and NC (n = 23). Sixty miRNAs were significantly up-regulated and 31 were down-regulated in the serum from NSCLC patients versus NC (adjusted p < 0.001). Four miRNAs (miR-193b, miR-301, miR-141 and miR-200b) were selected for validating their diagnostic value in an independent cohort. In the discovery set, the ROC plot derived from the combination of these miRNAs yielded an area under the curve (AUC) of 0.985 (95% CI 0.961–1.000, p < 0.001). In the test set, this miRNA signature exhibited an AUC of 0.993 (95% CI 0.979–1.000, p < 0.001). In conclusion, we identified a serum 4-miRNA signature that discriminated with high accuracy lung cancer patients from NC. Further prospective validation of this miRNA signature is warranted.
Characterization of the honeybee AmNaV1 channel and tools to assess the toxicity of insecticides
Authors: Gosselin-Badaroudine Pascal , Moreau Adrien , Delemotte Lucie , Cens Thierry , Collet Claude , Rousset Matthieu , Charnet Pierre , Klein Michael L. , Chahine Mohamed
Published: July 2015

Pollination is important for both agriculture and biodiversity. For a significant number of plants, this process is highly and sometimes exclusively, dependent on the pollination activity of honeybees. The large numbers of honeybee colony losses reported in recent years have been attributed to colony collapse disorder. Various hypotheses, including pesticide overuse, have been suggested to explain the disorder. Using the Xenopus oocytes expression system and two microelectrode voltage-clamp, we report the functional expression and the molecular, biophysical and pharmacological characterization of the western honeybee’s sodium channel (Apis Mellifera NaV1). The NaV1 channel is the primary target for pyrethroid insecticides in insect pests. We further report that the honeybee’s channel is also sensitive to permethrin and fenvalerate, respectively type I and type II pyrethroid insecticides. Molecular docking of these insecticides revealed a binding site that is similar to sites previously identified in other insects. We describe in vitro and in silico tools that can be used to test chemical compounds. Our findings could be used to assess the risks that current and next generation pesticides pose to honeybee populations.
Vacuum-free transparent quantum dot light-emitting diodes with silver nanowire cathode
Authors: Jing Pengtao , Ji Wenyu , Zeng Qinghui , Li Di , Qu Songnan , Wang Jia , Zhang Dandan
Published: July 2015

Efficient transparent quantum-dot light emitting diodes (QD-LEDs) are demonstrated by using a silver nanowire (AgNW) cathode. The devices are fabricated through a solution technique, not any vacuum processes are involved. Almost identical performance is obtained for both sides of the transparent device, which is primary due to the high transmittance of AgNW cathode. The maximum luminance (efficiency) for ITO and AgNW side is 25,040 cd/m2 (5.6 cd/A) and 23,440 cd/m2 (5.2 cd/A), respectively. The average specular transmittance of the device (involving the glass substrate) is over 60% in the visible range. This study indicates that AgNW electrodes can serve as a cost-effective, flexible alternative to ITO and thereby improve the economic viability and mechanical stability of QD-LEDs. All the results suggest that this is an important progress toward producing transparent QD-LEDs based displays and lighting sources.
Mercury-induced fragmentation of n-decane and n-undecane in positive mode ion mobility spectrometry
Authors: Gunzer F.
Published: July 2015

n-Decane and n-undecane show a multitude of signals when mixed with mercury saturated dry air in IMS.
Synthetic sialylglycopolymer receptor for virus detection using cantilever-based sensors
Authors: Gorelkin P. V. , Erofeev A. S. , Kiselev G. A. , Kolesov D. V. , Dubrovin E. V. , Yaminsky I. V.
Published: July 2015

We describe the rapid, label-free detection of Influenza A viruses using a cantilever transducer modified with a synthetic sialylglycopolymer receptor layer.
Separation of acetone and butyric acid for simultaneous analysis of sugars, volatile fatty acids, acetone and alcohols by HPLC using flow programming
Authors: Vohra Mustafa H. , Jain Pratiksha , Jha Tina , Sharma Mohita , Dureja Prem , Sarma Priyangshu M. , Lal Banwari
Published: July 2015

An improved method for simultaneous analysis of fermentative products and separation of acetone and butyric acid using flow programming in HPLC.
3,3′-Dioctadecyloxacarbocyanine perchlorate (DiO) as a fluorogenic probe for measurement of critical micelle concentration
Authors: Peterson Amberlyn M. , Tan Zhesen , Kimbrough Evelyn M. , Heemstra Jennifer M.
Published: July 2015

DiO is explored as a fluorogenic dye for CMC measurement, and we demonstrate that it is more user-friendly and reliable than the commonly used dye, Nile Red.
Single laboratory validation of an environmentally friendly single extraction and cleanup method for quantitative determination of four priority polycyclic aromatic hydrocarbons in edible oils and fats
Authors: Chung Stephen W. C. , Lau Jason S. Y.
Published: July 2015

This paper reports a simple, rapid, reliable and environmentally friendly gas chromatography-mass spectrometry (GC-MS) method for analyzing polycyclic aromatic hydrocarbons (PAHs) in edible oils and fats.
Thermoresponsive hydrogel maintains the mouse embryonic stem cell “naïve” pluripotency phenotype
Authors: Mangani Christian , Lilienkampf Annamaria , Roy Marcia , de Sousa Paul A. , Bradley Mark
Published: July 2015

A chemically defined hydrogel HG21, which allows enzyme-free passaging, is a substitute for gelatin allowing standardised and inexpensive mESC culture.
Mesoporous TiO2/Zn2Ti3O8 hybrid films synthesized by polymeric micelle assembly
Authors: Zhao Ming , Bastakoti Bishnu Prasad , Li Yunqi , Xu Hua , Ye Jinhua , Liu Zongwen , Yamauchi Yusuke
Published: July 2015

A hybrid mesoporous TiO2/Zn2Ti3O8 film synthesized by a polymeric micelle assembly approach.
AIE luminogen-functionalised mesoporous nanomaterials for efficient detection of volatile gases
Authors: Li Dongdong , Zhang Yuping , Fan Zhiying , Yu Jihong
Published: July 2015

AIE-luminogen was fabricated onto mesoporous silica nanoparticles via a carbon–nitrogen double bond to detect volatile acid gases and DNT vapours.
Urchin-like Au@CdS/WO3 micro/nano heterostructure as a visible-light driven photocatalyst for efficient hydrogen generation
Authors: Yin Xing-Liang , Liu Jie , Jiang Wen-Jie , Zhang Xing , Hu Jin-Song , Wan Li-Jun
Published: July 2015

Urchin-like micro/nano heterostructure Au@CdS/WO3 exhibited a high H2 evolution rate as an all-solid Z-scheme visible-light driven photocatalyst.
Thermal lensing effect of CS2 studied with femtosecond laser pulses
Authors: Li Yi-Ci , Kuo Yu-Ting , Huang Po-Yuan , Yang Sidney S. , Lee Cheng-I , Wei Tai-Huei
Published: July 2015

By chopping 820 nm 18 femtosecond (fs)-laser pulses into trains with both train-width and train-to-train separation considerably longer than the thermal diffusivity time constant τth of CS2, we conducted Z-scan measurements on it at various times relative to the leading pulse of each train (T's).
Relative stability and reducibility of CeO2 and Rh/CeO2 species on the surface and in the cavities of γ-Al2O3: a periodic DFT study
Authors: Koleva Iskra Z. , Aleksandrov Hristiyan A. , Vayssilov Georgi N. , Duarte Renata , van Bokhoven Jeroen A.
Published: July 2015

Computational modeling suggests that a ceria nanoparticle deposited on γ-Al2O3 is reduced more easily than an isolated nanoparticle and incorporation of cerium ions in support cavities is favored on the γ-Al2O3(100) surface.
Initial inhomogeneity-induced crazy-clock behavior in the iodate–arsenous acid reaction in a buffered medium under stirred batch conditions
Authors: Valkai László , Csekő György , Horváth Attila K.
Published: July 2015

The stochasticity of the arsenous acid–iodate buffered reaction emerges from the initial inhomogeneities presented inherently in the imperfectly mixed part of a reactor.
Soft X-ray absorption spectroscopy of Ar2 and ArNe dimers and small Ar clusters
Authors: Jabbari Ghazal , Miteva Tsveta , Stumpf Vasili , Gokhberg Kirill , O'Keeffe Patrick , Ciavardini Alessandra , Bolognesi Paola , Coreno Marcello , Avaldi Lorenzo , Keshavarz Elham , Ghandehari Maryam , Tozihi Manijeh , Callegari Carlo , Alagia Michele , Prince Kevin Charles , Kivimäki Antti , Richter Robert
Published: July 2015

The X-ray absorption spectra of rare gas dimers and clusters have been studied experimentally and theoretically.
Hydrogen-bonded ring closing and opening of protonated methanol clusters H+(CH3OH)n (n = 4–8) with the inert gas tagging
Authors: Li Ying-Cheng , Hamashima Toru , Yamazaki Ryoko , Kobayashi Tomohiro , Suzuki Yuta , Mizuse Kenta , Fujii Asuka , Kuo Jer-Lai
Published: July 2015

Temperature dependence of hydrogen bond network structures of protonated methanol clusters is explored by IR spectroscopy and DFT simulations.
Stability and bonding of new superalkali phosphide species
Authors: Cochran Elizabeth , Muller Giel , Meloni Giovanni
Published: July 2015

New superalkali phosphide species (F2Li3P, F2Li3P2, and F4Li6P) are investigated using CBS-QB3 composite method and intriguing structural features are presented.
Linear Cu(i) chalcogenones: synthesis and application in borylation of unsymmetrical alkynes
Authors: Srinivas Katam , Naga Babu Chatla , Prabusankar Ganesan
Published: July 2015

The synthesis, properties and catalytic application of homoleptic copper(i) imidazoline-2-chalcogenone complexes are described.
Single molecule study of non-specific binding kinetics of LacI in mammalian cells
Authors: Caccianini Laura , Normanno Davide , Izeddin Ignacio , Dahan Maxime
Published: July 2015

Many key cellular processes are controlled by the association of DNA-binding proteins (DBPs) to specific sites. The kinetics of the search process leading to the binding of DBPs to their target locus are largely determined by transient interactions with non-cognate DNA. Using single-molecule microscopy, we studied the dynamics and non-specific binding to DNA of the Lac repressor (LacI) in the environment of mammalian nuclei. We measured the distribution of the LacI–DNA binding times at non-cognate sites and determined the mean residence time to be τ1D = 182 ms. This non-specific interaction time, measured in the context of an exogenous system such as that of human U2OS cells, is remarkably different compared to that reported for the LacI in its native environment in E. coli (<5 ms). Such a striking difference (more than 30 fold) suggests that the genome, its organization, and the nuclear environment of mammalian cells play important roles on the dynamics of DBPs and their non-specific DNA interactions. Furthermore, we found that the distribution of off-target binding times follows a power law, similar to what was reported for TetR in U2OS cells. We argue that a possible molecular origin of such a power law distribution of residence times is the large variability of non-cognate sequences found in the mammalian nucleus by the diffusing DBPs.
Integrative approaches for signalling and metabolic networks
Authors: Hatzimanikatis Vassily , Saez-Rodriguez Julio
Published: July 2015

Guest editors Vassily Hatzimanikatis and Julio Saez-Rodriguez introduce the Integrative Approaches for Signalling and Metabolic Networks themed issue of Integrative Biology.
Structure-based design of a bisphosphonate 5′(3′)-deoxyribonucleotidase inhibitor
Authors: Pachl Petr , Šimák Ondřej , Řezáčová Pavlína , Fábry Milan , Buděšínský Miloš , Rosenberg Ivan , Brynda Jiří
Published: July 2015

Based on previously known inhibitor–enzyme complex structures, we developed a promising inhibitor by mimicking the phosphate ion and achieved 50- and 100-fold increases in the inhibitory potency towards cdN and mdN, respectively.
Harnessing charge and exciton distribution towards extremely high performance: the critical role of guests in single-emitting-layer white OLEDs
Authors: Liu Baiquan , Wang Lei , Gao Dongyu , Xu Miao , Zhu Xuhui , Zou Jianhua , Lan Linfeng , Ning Honglong , Peng Junbiao , Cao Yong
Published: July 2015

The simplicity/extremely high efficiency/low efficiency roll-off/stable color trade-off has been accomplished in a single-EML WOLED.
Structural, vibrational and electronic characterization of 1-benzyl-3-furoyl-1-phenylthiourea: an experimental and theoretical study
Authors: Defonsi Lestard María Eliana , Gil Diego M. , Estévez-Hernández Osvaldo , Erben Mauricio F. , Duque Julio
Published: July 2015

The compound 1-benzyl-3-furoyl-1-phenylthiourea was synthesized and characterized through IR and Raman spectroscopy and its molecular structure was determined.
A Ce(OTf)3/PyBox catalyzed enantioselective Hosomi–Sakurai reaction of aldehydes with allyltrimethylsilane
Authors: Zhao Song , Zhang Xulong , Zhang Yuwei , Yang Huanhuan , Huang Yan , Zhang Kui , Du Ting
Published: July 2015

An approach to the efficient synthesis of enantioselective homoallylic alcohols has been developed by the use of a catalytic amount of a cerium/PyBox complex.
Synthesis of dandelion-like NiO hierarchical structures assembled with dendritic units and their performances for ethanol gas sensing
Authors: Zhao Qi , Chuai Mingyan , Xiao Bingxin , Yang Tianye , Luo Yang , Zhang Mingzhe
Published: July 2015

Dandelion-like NiO hierarchical structures assembled with dendritic units exhibit rapid response-recovery speed to the ethanol gas.
Catalyst free C–N bond formation by the reaction of amines with diimides: bulky guanidines
Authors: Baishya Ashim , Peddarao Thota , Barman Milan Kr. , Nembenna Sharanappa
Published: July 2015

Catalyst free direct addition of cyclic secondary amines to variousN,N′-bisaryl substituted carbodiimides led to the formation of bulky guanidines. Furthermore, two equivalents ofN,N′-bisaryl substituted carbodiimides upon treatment with piperazine led to the formation of bis guanidines.
Emission enhancement and polarization of semiconductor quantum dots with nanoimprinted plasmonic cavities: towards scalable fabrication of plasmon-exciton displays
Authors: Cadusch Jasper J. , Panchenko Evgeniy , Kirkwood Nicholas , James Timothy D. , Gibson Brant C. , Webb Kevin J. , Mulvaney Paul , Roberts Ann
Published: July 2015

An application of a high-throughput nanofabrication technique to the creation of a plasmonic metasurface for the enhancement and control of radiation by quantum dots.
Quantitative nanoscale electrostatics of viruses
Authors: Hernando-Pérez M. , Cartagena-Rivera A. X. , Lošdorfer Božič A. , Carrillo P. J. P. , San Martín C. , Mateu M. G. , Raman A. , Podgornik R. , de Pablo P. J.
Published: July 2015

The recognition events between viruses and host cells are dominated by both specific and non-specific electrostatic interactions determined by the charge of viral particles. Here we probe the charge of individual viruses in aqueous solutions by measuring the electrostatic force between each viral particle and the Atomic Force Microscope tip.
Comparative evaluation and optimization of off-the-shelf cationic polymers for gene delivery purposes
Authors: Malloggi C. , Pezzoli D. , Magagnin L. , De Nardo L. , Mantovani D. , Tallarita E. , Candiani G.
Published: July 2015

Commercially sourced cationic polymers for gene delivery are thoroughly characterized, compared and optimized.
Formation of a protective nitride layer by electrochemical nitridation on 316L SS bipolar plates for a proton exchange membrane fuel cell (PEMFC)
Authors: Mani S. Pugal , Anandan C. , Rajendran N.
Published: July 2015

In the present study, an attempt has been made to increase the corrosion resistance of 316L stainless steel (SS) bipolar plates (Bp) through electrochemical nitridation using a nitrate bearing electrolyte solution of 0.1 M HNO3 and 0.5 M KNO3.
Spectral weight shift in the valence band density of states and concurrent increase in field emission by hydrogenation of FeCo–SiO2 nanocomposites
Authors: Sarker Debalaya , Ghosh S. , Srivastava P.
Published: July 2015

Roughened surface and enhanced valence electronic states of hydrogen plasma treated FeCo–SiO2 nanogranular films has made it an efficient field emitter in comparison to its as-grown and furnace annealed counterparts.
Development of novel small peptide ligands for antibody purification
Authors: Wei Yuping , Xu Jiandong , Zhang Liang , Fu Yankai , Xu Xia
Published: July 2015

Small peptide ligands which were designed based on the interactions with human immunoglobulin G (IgG) using the molecular simulations, can offer a potential alternative for mAb purification with elution condition at pH 9 and pH 3.
Effect of hydrothermal modified carbon fiber through Diels–Alder reaction and its reinforced phenolic composites
Authors: Fei Jie , Luo Wei , Huang JianFeng , Ouyang HaiBo , Wang HongKun , Cao LiYun
Published: July 2015

The intensity of peaks 1 and 2 changed little indicating no significant change of the carbon fiber skin region. Peak 3 obviously increased after modification indicating the increase in carboxyl groups, and revealing that the maleic anhydride was grafted on the carbon fibers.
Study on the aqueous solution behavior and extraction mechanism of Nd(iii) in the presence of the complexing agent lactic acid with di-(2-ethylhexyl) phosphoric acid
Authors: Yin Shao-Hua , Li Shi-Wei , Xie Feng , Zhang Li-Bo , Peng Jin-Hui
Published: July 2015

The aqueous solution behavior and extraction mechanism of single Nd(iii) from a chloride medium with di-(2-ethylhexyl) phosphoric acid (D2EHPA, H2A2) in the presence of the complexing agent lactic acid (HLac) have been reported.
Influence of Ti4+ on the long lasting luminescence of Sr2SiO4:Eu2+
Authors: Szczodrowski Karol , Chruścińska Alicja , Barzowska Justyna , Przegiętka Krzysztof , Anders Krzysztof , Piramidowicz Ryszard , Grinberg Marek
Published: July 2015

The Sr2Si0.95Ti0.05O4:Eu2+ phosphor was synthesized using titanium modified silica SBA-15 or titania as titanium precursors via a solid state synthesis method.
Chromogenic ‘naked eye’ and fluorogenic ‘turn on’ sensor for mercury metal ion using thiophene-based Schiff base
Authors: Singhal Divya , Gupta Neha , Singh Ashok Kumar
Published: July 2015

2-((3-Methylthiophen-2-yl)methyleneamino)benzenethiol (Probe 1) is selective for Hg2+. The binding affinity of Hg2+ with Probe 1 was confirmed by DFT and electrochemical behaviour. The limit of detection was 20 μM with 2 : 1 stoichiometry of 1 + Hg2+ complex.
Fixed dose combination therapy loperamide and niacin ameliorates diethylnitrosamine-induced liver carcinogenesis in albino Wistar rats
Authors: Khan Ruqaiyah , Kazmi Imran , Afzal Muhammad , Al Abbasi Fahad A. , Mushtaq Gohar , Ahmad Aftab , Kumar Vikas , Anwar Firoz
Published: July 2015

Hepatocellular carcinoma (HCC) is among the most lethal cancers (five-year survival rates under 11%), which makes it the third most frequent cause of cancer related deaths in men and sixth in women.
Manipulation and precise control of colloidal microsphere resonators coupled to a non-planar waveguide
Authors: Chen Te-Chang , Liao Tse-Jen , Lee Ming-Chang M.
Published: July 2015

An optofluidic platform using optoelectronic tweezers and locally-confined dielectrophoresis to manipulate a colloidal microsphere resonator coupled to a non-planar waveguide.
Hierarchical porous carbon nanofibrous membranes with an enhanced shape memory property for effective adsorption of proteins
Authors: Fan Gang , Ge Jianlong , Kim Hak-Yong , Ding Bin , Al-Deyab Salem S. , El-Newehy Mohamed , Yu Jianyong
Published: July 2015

A hierarchical porous CNF membrane with robust mechanical properties, exhibiting intriguing shape memory properties and efficient protein adsorption performance.
Jatrorrhizine hydrochloride potentiates the neuraminidase inhibitory effect of oseltamivir towards H7N9 influenza
Authors: Wang Ye , Yu Miao , Wang Xiaonan , Zhang Xin , Wang Xizhu , Fang Xuexun
Published: July 2015

By analyzing the docking result of the binding position, hydrogen bond interactions, pi–pi interaction, etc., it is likely that jatrorrhizine hydrochloride potentiates the neuraminidase inhibitory effect of oseltamivir towards H7N9 influenza.
Role of polyethyleneimine as an additive in cyanide-free electrolytes for gold electrodeposition
Authors: Ren Xuefeng , Song Ying , Liu Anmin , Zhang Jie , Yang Peixia , Zhang Jinqiu , Yuan Guohui , An Maozhong , Osgood Hannah , Wu Gang
Published: July 2015

Study of the influence of polyethyleneimine on the cyanide-free gold nucleation process and morphology of gold electrodeposits.
Characteristics of graphene quantum dots determined by edge structures: three kinds of dots fabricated using thermal plasma jet
Authors: Lee Myung Woo , Kim Juhan , Suh Jung Sang
Published: July 2015

Model structures of the three types of graphene quantum dots; armchair (red), zigzag (blue), and hybrid (yellow) GQDs.
High capacity CO2sorbents based on zinc-functionalized ionic liquid confined in morphologically diverse porous matrices
Authors: Arellano Ian Harvey , Huang Junhua , Pendleton Phillip
Published: July 2015

High uptake capacity and dramatic sorption kinetic enhancement in a series of novel hybrid CO2sorbents based on a supported zinc-functionalized ionic liquid.
Mycoremediation potential of Coprinus comatus in soil co-contaminated with copper and naphthalene
Authors: Wu Bin , Chen Rong , Yao Yuan , Gao Ni , Zuo Lei , Xu Heng
Published: July 2015

Experiments were conducted to investigate the effects of mycoremediation byCoprinus comatus(C. comatus) on the biochemical properties and lettuce growth in copper and naphthalene (Nap) co-contaminated soil.
Fabrication of the g-C3N4/Cu nanocomposite and its potential for lubrication applications
Authors: Yang Jin , Zhang Hongtao , Chen Beibei , Tang Hua , Li Changsheng , Zhang Zhaozhu
Published: July 2015

The g-C3N4/Cu nanocomposite was prepared by in situ reduction of Cu2+ adsorbed on the surface defects of g-C3N4, and it exhibited the best lubricating behavior with the lowest friction coefficient and wear rate compared to g-C3N4 or Cu nanoparticles.
A “turn on” fluorescent probe for heparin and its oversulfated chondroitin sulfate contaminant
Authors: Ding Yubin , Shi Leilei , Wei Hui
Published: July 2015

The conjugation of tetraphenylethene and a heparin binding peptide afforded a “turn on” fluorescent probe for reliable determination of heparin and its contaminant oversulfated chondroitin sulfate.
Pt nanohelices with highly ordered horizontal pore channels as enhanced photothermal materials
Authors: Song Shuyan , Wang Xiao , Li Sheling , Wang Zhuo , Zhu Qi , Zhang Hongjie
Published: July 2015

Pt nanohelices with highly ordered horizontal pore channels have been successfully developed. A study of the formation mechanism has shown that a typical two-step growth process occurs. The as-obtained Pt nanohelices exhibit enhanced photothermal and catalytic properties.
Amphiphilic triblocks to control assembly of mixed or segregated bilayers and monolayers
Authors: Ting Christina L. , Jones Brad H. , Frischknecht Amalie L. , Spoerke Erik D. , Stevens Mark J.
Published: July 2015

Triblock phase diagram as a function of interaction strength χACand volume fractionfA. Markers correspond to symmetric bilayer (stars), symmetric monolayer (circles), and asymmetric monolayer (diamond).
Mn-doped Co2(OH)3Cl xerogels with 3D interconnected mesoporous structures as lithium ion battery anodes with improved electrochemical performance
Authors: Zhang Zhiwei , Yin Longwei
Published: July 2015

Co2(OH)3Cl exhibits a deformed pyrochlore structure regarded as a solid solution of Co(OH)2and CoCl2, so Co2(OH)3Cl xerogel as anode material can display superior electrochemical performance with the merits of both high theoretical capacity of Co(OH)2and good cycling stability of CoCl2.
Electrospun porous lithium manganese phosphate–carbon nanofibers as a cathode material for lithium ion batteries
Authors: Liu Li , Song Taeseup , Han Hyungkyu , Park Hyunjung , Xiang Juan , Liu Zhiming , Feng Yi , Paik Ungyu
Published: July 2015

Porous LiMnPO4/C composite nanofibers show excellent electrochemical performance including a high reversible capacity of 112.7 mA h g−1 and stable cycle retention of 95% after 100 cycles.
High-throughput synthesis of core–shell and multi-shelled materials by fluidised bed chemical vapour deposition. Case study: double-shell rutile–anatase particles
Authors: Powell M. J. , Quesada-Cabrera R. , Travis W. L. , Parkin I. P.
Published: July 2015

A lab-scale Fluidised Bed Chemical Vapour Deposition (FBCVD) reactor is described for the development of multi-shelled structures.
Color tunable porous organic polymer luminescent probes for selective sensing of metal ions and nitroaromatic explosives
Authors: Guo Lin , Cao Dapeng
Published: July 2015

The color tailoring of the porous covalent–organic polymers (COPs) is achieved successfully, and the first near-infrared luminescent COP with emission of 815 nm is obtained. These COPs can serve as luminescent sensors for highly sensitive and selective sensing of nitroaromatic explosives and metal ions.
DDB2 is involved in ubiquitination and degradation of PAQR3 and regulates tumorigenesis of gastric cancer cells
Authors: Qiao Shanshan , Guo Weiwei , Liao Lujian , Wang Lin , Wang Zheng , Zhang Rui , Xu Daqian , Zhang Yuxue , Pan Yi , Wang Zhenzhen , Chen Yan
Published: July 2015

DDB2 (damage-specific DNA-binding protein 2) is the product of the xeroderma pigmentosum group E gene which is involved in the initiation of nucleotide excision repair via an ubiquitin ligase complex together with DDB1 and CUL4A (cullin 4A). PAQR3 (progestin and adipoQ receptor family member III) is a newly discovered tumour suppressor that is implicated in the development of many types of human cancers. In the present paper, we report that DDB2 is involved in ubiquitination and degradation of PAQR3. DDB2 is able to interact with PAQR3 in vivo and in vitro. Both overexpression and knockdown experiments reveal that the protein expression level, protein stability and polyubiquitination of PAQR3 are changed by DDB2. Negative regulation of EGF (epidermal growth factor)- and insulin-induced signalling by PAQR3 is also altered by DDB2. At the molecular level, Lys61 of PAQR3 is targeted by DDB2 for ubiquitination. The cell proliferation rate and migration of gastric cancer cells are inhibited by DDB2 knockdown and such effects are abrogated by PAQR3 knockdown, indicating that the effect of DDB2 on the cancer cells is mediated by PAQR3. Collectively, our studies not only pinpoint that DDB2 is a post-translational regulator of PAQR3, but also indicate that DDB2 may play an active role in tumorigenesis via regulating PAQR3.
Regulation of the p53 response and its relationship to cancer
Authors: Meek David W.
Published: July 2015

p53 has been studied intensively as a major tumour suppressor that detects oncogenic events in cancer cells and eliminates them through senescence (a permanent non-proliferative state) or apoptosis. Consistent with this role, p53 activity is compromised in a high proportion of all cancer types, either through mutation of the TP53 gene (encoding p53) or changes in the status of p53 modulators. p53 has additional roles, which may overlap with its tumour-suppressive capacity, in processes including the DNA damage response, metabolism, aging, stem cell differentiation and fertility. Moreover, many mutant p53 proteins, termed ‘gain-of-function’ (GOF), acquire new activities that help drive cancer aggression. p53 is regulated mainly through protein turnover and operates within a negative-feedback loop with its transcriptional target, MDM2 (murine double minute 2), an E3 ubiquitin ligase which mediates the ubiquitylation and proteasomal degradation of p53. Induction of p53 is achieved largely through uncoupling the p53–MDM2 interaction, leading to elevated p53 levels. Various stress stimuli acting on p53 (such as hyperproliferation and DNA damage) use different, but overlapping, mechanisms to achieve this. Additionally, p53 activity is regulated through critical context-specific or fine-tuning events, mediated primarily through post-translational mechanisms, particularly multi-site phosphorylation and acetylation. In the present review, I broadly examine these events, highlighting their regulatory contributions, their ability to integrate signals from cellular events towards providing most appropriate response to stress conditions and their importance for tumour suppression. These are fascinating aspects of molecular oncology that hold the key to understanding the molecular pathology of cancer and the routes by which it may be tackled therapeutically.
Interaction in endothelium of non-muscular myosin light-chain kinase and the NF-κB pathway is critical to lipopolysaccharide-induced vascular hyporeactivity
Authors: Recoquillon Sylvain , Carusio Nunzia , Lagrue-Lakhal Anne-Hélène , Tual-Chalot Simon , Filippelli Amelia , Andriantsitohaina Ramaroson , Martinez M. Carmen
Published: July 2015

During sepsis, endothelial barrier dysfunction contributes to cardiovascular failure, mainly through the release of oxidative metabolites by penetrant leukocytes. We reported the non-muscular isoform of myosin light chain kinase (nmMLCK) playing a pivotal role in endotoxin shock injury associated with oxidative and nitrative stresses, and vascular hyporeactivity. The present study was aimed at understanding the molecular mechanism of lipopolysaccharide (LPS)-induced vascular alterations as well as studying a probable functional association of nmMLCK with nuclear factor κ-light-chain enhancer of activated B cells (NF-κB). Aortic rings from mice were exposed in vitro to LPS and, then, vascular reactivity was measured. Human aortic endothelial cells (HAoECs) were incubated with LPS, and interaction of nmMLCK with NF-κB was analysed. We provide evidence that nmMLCK deletion prevents vascular hyporeactivity induced by in vitro LPS treatment but not endothelial dysfunction in the aorta. Deletion of nmMLCK inhibits LPS-induced NF-κB activation and increases nitric oxide (NO) release via induction of inducible NO synthase (iNOS) within the vascular wall. Also, removal of endothelium prevented both NF-κB and iNOS expression in aortic rings. Among the proinflammatory factors released by LPS-treated endothelial cells, interleukin-6 accounts for the induction of iNOS on smooth muscle cells in response to LPS. Of particular interest is the demonstration that, in HAoECs, LPS-induced NF-κB activation occurs via increased MLCK activity sensitive to the MLCK inhibitor, ML-7, and physical interactions between nmMLCK and NF-κB. We report for the first time on NF-κB as a novel partner of nmMLCK within endothelial cells. The present study demonstrates a pivotal role of nmMLCK in vascular inflammatory pathologies.
Construction of girth‐eight QC‐LDPC codes from arithmetic progression sequence with large column weight
Authors: Zhang Yi , Da Xinyu
Published: July 2015

For any row weight L, a novel class of (8, L) quasi‐cyclic low‐density parity‐check (QC‐LDPC) codes is deterministically constructed with girth eight. Compared with a similar construction, the proposed (7, L) and (8, L) QC‐LDPC codes exist for any circulant permutation matrix of size P ≥ (L − 1)(L2 + 3L/4 + 3/4) + 1 and P ≥ (L − 1)(L2 + 3L/4 + 7/4) +1, which remarkably improve the existing bounds of (L − 1)(L2 + L) +1 and (L − 1)(L2 + L + 1) +1, respectively. Moreover, for any column weight J, any row weight L and any common difference, a construction for (J, L) QC‐LDPC codes with girth eight is also proposed. This construction has high flexibility with respect to the design of code rate and code length. Simulation results show that the novel codes with moderate lengths perform well in the additive white Gaussian noise channel.
Lower cutoff frequency improvement of planar EBG‐patterned PDN using edge termination
Authors: Sadr A. , Masoumi N.
Published: July 2015

A designed, fabricated and tested electromagnetic bandgap (EBG) structure is proposed for resolving the problem of the lower cut‐off frequency of conventional planar‐type EBGs. Bandwidth enhancement is achieved by incorporating edge termination along the edges of the whole EBG‐patterned power plane. Measurement results show that the lower cutoff frequency is shifted downwards from 800 to 13 MHz. This structure also improves the upper cutoff frequency of 4.3 GHz for the conventional planar EBG to 5.2 GHz. Using this structure, simultaneous switching noise can be suppressed over the relative bandwidth of 63%, which is higher than the commonly used EBGs. The structure is easily fabricated with the current method of printed circuit board manufacturing processes and commonly used SMD resistors and capacitors.
Optimal fitting polynomial for linear time bilateral filters
Authors: Dai Longquan , Yuan Mengke , Zhang Xiaopeng
Published: July 2015

The bilateral filter (BF) has showed great effectiveness for a variety of problems. However, its brute‐force implementation is time consuming. One way of accelerating a BF is to approximate the nonlinear range kernel of the BF by a set of linear time shiftable kernels. To achieve this goal, only finite values of the kernel of the BF have been used to perform smoothing due to the quantisation of digital images. Thus, the filtering results are not changed by substituting the range kernel with the function having the same values at finite discrete points. The Lagrange interpolation polynomial can exactly pass through predefined points and therefore can be employed to replace original kernels for accurate by accelerating the BF. To speed up the BF at the cost of small approximation error, two approximation methods are proposed to obtain the optimal fitting polynomial. The performance of the proposed method is validated by extensive experiments.
Improvement of detection performance in STDR/SSTDR using sign detector
Authors: Han Jeong Jae , Park So Ryoung , Noh Sanguk
Published: July 2015

Novel fault detection schemes for sequence time‐domain reflectometry (STDR) and spread‐spectrum time‐domain reflectometry (SSTDR) are proposed, which improve, the detection performance of far faults without increasing the computational complexity by positioning a sign detector at the front of the time correlator. Simulation results demonstrate that the detection performances of the proposed schemes for far faults are considerably better than those of the conventional ones regardless of sequence lengths and reference types.
Downlink multicell distributed beamforming with intra‐cell local channel state informations
Authors: Huang Zijia , Wang Xiaoxiang , Wang Dongyu , Wang Xianan , Gong Wenrong
Published: July 2015

ln this paper, a distributed beamforming algorithm is proposed for downlink multicell network when the intra‐cell local channel state informations (CSIs) are available at each base station (BS). The proposed algorithm includes three parts, firstly, an algorithm is proposed to estimate the direction vectors of the inter‐cell local channels. The algorithm above utilizes a set of random orthogonal bases and the known training formula to get all basis vectors of orthogonal complement space of the inter‐cell local channel vector. Secondly, a proposition based on singular value decomposition of all local channel vectors is presented for the distributed beamforming causing minimum intra‐cell interference (InCI) and inter‐cell interference (ICI) toward other users. Thirdly, with only intra‐cell local CSIs at BS, a training algorithm is proposed to obtain the amplitudes of the whole local channel vectors. This training algorithm exploits the unit matrix and unit transmit power to perform fixed steps of training process, and the amplitude of inter‐cell local channel vector is estimated by the observations of BS or user. Finally, simulation results demonstrate that the proposed algorithm can achieve higher user rate while offering more advantages to suppress InCI and ICI than the traditional ones.
Research and analysis of experimental approach to study the transmission characteristics of full hydraulic wind power generation technology
Authors: Yujiong Gu , Bingbing Wang , Weipeng Yang , Dian Xie
Published: July 2015

Fully hydraulic wind power generation is an emerging research direction. These hydraulic wind power generators replace the rigid connection between wind turbine and generator with a hydraulic flexible transmission system. This effectively absorbs a majority of the fluctuating load from the wind turbine, thereby achieving step less speed change and enabling the generator within the unit to maintain stable rotational speeds. The fully hydraulic wind power generator is different from the traditional wind power generators in terms of the transmission system used. As a result, the research here is focused on the transmission characteristics of the hydraulic system. Moreover, the transmission characteristics of the fully hydraulic wind turbine were compared to wind turbines with a mechanical transmission, from the analysis of the comparison different operating characteristics were revealed. The experiments using a test bench to study the full hydraulic wind power generator, whereas simulations using a model were carried out for the wind power generator with the mechanical transmission.
Electronic structure and thermoelectric properties of pnictogen-substituted ASn1.5Te1.5 (A = Co, Rh, Ir) skutterudites
Authors: Zevalkink Alex , Star Kurt , Aydemir Umut , Snyder G. Jeffrey , Fleurial Jean-Pierre , Bux Sabah , Vo Trinh , von Allmen Paul
Published: July 2015

Substituting group 14 and 16 elements on the pnictogen site in the skutterudite structure yields a class of valence-precise ternary AX1.5Y1.5 compounds (A = Co, Rh, Ir, X = Sn, Ge, and Y = S, Se, Te), in which X and Y form an ordered sub-structure. Compared with unfilled binary skutterudites, pnictogen-substituted phases exhibit extremely low lattice thermal conductivity due to increased structural complexity. Here, we investigate the role of the transition metal species in determining the electronic structure and transport properties of ASn1.5Te1.5 compounds with A = Co, Rh, Ir. Density functional calculations using fully ordered structures reveal semiconducting behavior in all three compounds, with the band gap varying from 0.2 to 0.45 eV. In CoSn1.5Te1.5, the electronic density of states near the gap is significantly higher than for A = Ir or Rh, leading to higher effective masses and higher Seebeck coefficients. Experimentally, Ir and Rh samples exhibit relatively large p-type carrier concentrations and degenerate semiconducting behavior. In contrast, CoSn1.5Te1.5 shows mixed conduction, with n-type carriers dominating the Seebeck coefficient and light, high mobility holes dominating the Hall coefficient. zT values of up to 0.35 were obtained, and further improvement is expected upon optimization of the carrier concentration or with n-type doping.
Remarkable connections between extended magnetohydrodynamics models
Authors: Lingam M. , Morrison P. J. , Miloshevich G.
Published: July 2015

Through the use of suitable variable transformations, the commonality of all extended magnetohydrodynamics (MHD) models is established. Remarkable correspondences between the Poisson brackets of inertialess Hall MHD and inertial MHD (which has electron inertia, but not the Hall drift) and extended MHD (which has both effects) are established. The helicities (two in all) for each of these models are obtained through these correspondences. The commonality of all the extended MHD models is traced to the existence of two Lie-dragged 2-forms, which are closely associated with the canonical momenta of the two underlying species. The Lie-dragging of these 2-forms by suitable velocities also leads to the correct equations of motion. The Hall MHD Poisson bracket is analyzed in detail, the Jacobi identity is verified through a detailed proof, and this proof ensures the Jacobi identity for the Poisson brackets of all the models.
Graph theoretical enumeration of topology-distinct structures for hydrogen fluoride clusters (HF)n (n ≤ 6)
Authors: Jelil Mahmutjan , Abaydulla Alimjan
Published: July 2015

A graph theoretical procedure to generate all the possible topology-distinct structures for hydrogen fluoride (HF) clusters is presented in this work. The hydrogen bond matrix is defined and used to enumerate the topology-distinct structures of hydrogen fluoride (HF)n (n = 2–8) clusters. From close investigation of the structural patterns obtained, several restrictions that should be satisfied for a structure of the HF clusters to be stable are found. The corresponding digraphs of generated hydrogen bond matrices are used as the theoretical framework to obtain all the topology-distinct local minima for (HF)n (n ≤ 6), at the level of MP2/6-31G**(d, p) of ab initio MO method and B3LYP/6-31G**(d, p) of density functional theory method. For HF clusters up to tetramers, the local minimum structures that we generated are same as those in the literature. For HF pentamers and hexamers, we found some new local minima structures which had not been obtained previously.
Rossby wave radiation by an eddy on a beta-plane: Experiments with laboratory altimetry
Authors: Zhang Y. , Afanasyev Y. D.
Published: July 2015

Results from the laboratory experiments on the evolution of vortices (eddies) generated in a rotating tank with topographic β-effect are presented. The focus of the experiments is on the far-field flow which contains Rossby waves emitted by travelling vortices. The surface elevation and velocity fields are measured by the altimetric imaging velocimetry. The experiments are supplemented by shallow water numerical simulations as well as a linear theory which describes the Rossby wave radiation by travelling vortices. The cyclonic vortices observed in the experiments travel to the northwest and continuously radiate Rossby waves. Measurements show that initially axisymmetric vortices develop a dipolar component which enables them to perform translational motion. A pattern of alternating zonal jets to the west of the vortex is created by Rossby waves with approximately zonal crests. Energy spectra of the flows in the wavenumber space indicate that a wavenumber similar to that introduced by Rhines for turbulent flows on the β-plane can be introduced here. The wavenumber is based on the translational speed of a vortex rather than on the root-mean-square velocity of a turbulent flow. The comparison between the experiments and numerical simulations demonstrates that evolving vortices also emit inertial waves. While these essentially three-dimensional non-hydrostatic waves can be observed in the altimetric data, they are not accounted for in the shallow water simulations.
Advanced in-situ electron-beam lithography for deterministic nanophotonic device processing
Authors: Kaganskiy Arsenty , Gschrey Manuel , Schlehahn Alexander , Schmidt Ronny , Schulze Jan-Hindrik , Heindel Tobias , Strittmatter André , Rodt Sven , Reitzenstein Stephan
Published: July 2015

We report on an advanced in-situ electron-beam lithography technique based on high-resolution cathodoluminescence (CL) spectroscopy at low temperatures. The technique has been developed for the deterministic fabrication and quantitative evaluation of nanophotonic structures. It is of particular interest for the realization and optimization of non-classical light sources which require the pre-selection of single quantum dots (QDs) with very specific emission features. The two-step electron-beam lithography process comprises (a) the detailed optical study and selection of target QDs by means of CL-spectroscopy and (b) the precise retrieval of the locations and integration of target QDs into lithographically defined nanostructures. Our technology platform allows for a detailed pre-process determination of important optical and quantum optical properties of the QDs, such as the emission energies of excitonic complexes, the excitonic fine-structure splitting, the carrier dynamics, and the quantum nature of emission. In addition, it enables a direct and precise comparison of the optical properties of a single QD before and after integration which is very beneficial for the quantitative evaluation of cavity-enhanced quantum devices.