An extremely facile route to Co2P encased in N,P-codoped carbon layers: Highly efficient bifunctional electrocatalysts for ORR and OER
作者：
Li, Jun;Liu, Guiyu;Liu, Beibei;Min, Ziyan;Qian, Dong* ;...
期刊：
International Journal of Hydrogen Energy ,2018年43(3):1365-1374 ISSN：0360-3199
通讯作者：
Qian, Dong;Li, Junhua
作者机构：
[Li, Jun; Liu, Beibei; Qian, Dong; Min, Ziyan; Liu, Guiyu] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Li, Junhua] Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;[Jiang, Jianbo] Jishou Univ, Coll Chem & Chem Engn, Jishou 416000, Peoples R China.;[Li, Jun; Qian, Dong] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China.
通讯机构：
[Qian, Dong] C;[Li, Junhua] H;Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
Co2P;Electrocatalyst;N,P-codoped carbon layer;Oxygen evolution reaction;Oxygen reduction reaction
摘要：
Exploring low-cost, efficacious and stable bifunctional electrocatalysts for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial yet highly challenging to the wide perspective practicability for rechargeable metal−air batteries together with fuel cells and electrochemical water splitting. Herein, we have successfully prepared a novel nanohybrid consisting of Co<inf>2</inf>P nanocores encased in N,P-codoped carbon layers (denoted as Co<inf>2</inf>P@NPC) through an extremely facile and effective pyrolysis route utilizing easily available raw materials. The as-prepared Co<inf>2</inf>P@NPC exhibits excellent bifunctional electrocatalytic performances for both ORR and OER in alkaline solution. For ORR, Co<inf>2</inf>P@NPC shows comparable activity to the commercial 20 wt% Pt/C in terms of the half-wave potential and limited current density under the identical linear sweep voltammetry measurement conditions. Moreover, the ORR durability and methanol tolerance of Co<inf>2</inf>P@NPC are much better than those of 20 wt% Pt/C. As regards OER, Co<inf>2</inf>P@NPC affords lower activity but better stability than the fresh RuO<inf>2</inf>. The high electrocatalytic performances originate from the strong interaction between Co<inf>2</inf>P nanocores and N,P-codoped carbon layers, the high BET surface area and the conductive network formed by the crosslinking of carbon coatings.<br/> ©2017 Hydrogen Energy Publications LLC
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Synthesis, Crystal Structure and Properties of a New Binuclear Copper(II) Complex with 5-Oxo-4-oxa-tricyclo[4.2.1.0]nonane-9-carboxylic Acid (TNCA)
作者：
Li Wei;Li Yu-Lin* ;Li Chang-Hong* ;Tan Xiong-Wen
期刊：
Chinese Journal of Structural Chemistry ,2018年37(5):819-824 ISSN：0254-5861
通讯作者：
Li Yu-Lin;Li Chang-Hong
作者机构：
[Tan Xiong-Wen; Li Yu-Lin; Li Wei] Hengyang Normal Univ, Sch Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.;[Li Chang-Hong] Hunan Inst Technol, Sch Chem Engn, Hengyang 421002, Hunan, Peoples R China.;[Li Wei] Key Lab Funct Met Organ Cpds Hunan Prov Hengyang, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Li Yu-Lin; Li Chang-Hong] H;Hengyang Normal Univ, Sch Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.;Hunan Inst Technol, Sch Chem Engn, Hengyang 421002, Hunan, Peoples R China.
关键词：
binuclear copper(II) complex;thermal stability;electrochemical and magnetic properties
摘要：
A new binuclear copper(II) complex [Cu_2(Hpt)_2(TNCA)_2(H_2O)_2]·4H_2O (1) has been synthesized with copper acetate, 5-oxo-4-oxa-tricyclo[4.2.1.0]nonane-9-carboxylic acid (TNCA) and 3-(pyridin-2-yl)-1,2,4-triazole (Hpt). It crystallizes in the triclinic space group P1, with a = 8.8199(18), b = 14.278(3), c = 15.269(3) A, α = 76.21(3)º, β = 81.07(3)º, γ = 76.07(3)º, V = 1802.7(6) A~3, D_c = 1.636 g/cm~3, Z = 2, F(000) = 916, the final GOOF = 1.051, R = 0.0556 and wR = 0.1388. The whole molecule consists of two copper ions bridged by two μ2-η1:η0-3-(pyridin-2-yl)-1,2,4-triazole anions. The coordination environment of the Cu(1) ion is CuO_2N_3, giving a distorted square pyramidal geometry. 1 exhibits antiferromagnetic interaction between Cu(II) ions, the electron transfer of 1 is irreversible in electrode reactions and the TG analysis shows that 1 is stable below 440 K.
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Hydrothermal Synthesis, Crystal Structure and Properties of One Binuclear Nickel(II) Complex with 3-(2-Pyridiyl)-1H-1,2,4-triazole
作者：
Li Chang-Hong* ;Li Wei* ;Li An-Wu;Tan Xiong-Wen
期刊：
Chinese Journal of Structural Chemistry ,2018年37(6):1004-1008 ISSN：0254-5861
通讯作者：
Li Chang-Hong;Li Wei
作者机构：
[Li An-Wu; Li Chang-Hong] Hunan Inst Technol, Sch Chem Engn, Hengyang 421002, Peoples R China.;[Tan Xiong-Wen; Li Wei] Hengyang Normal Univ, Sch Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Li Chang-Hong; Li Wei] H;Hunan Inst Technol, Sch Chem Engn, Hengyang 421002, Peoples R China.;Hengyang Normal Univ, Sch Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
binuclear nickel(II) complex;luminescence;thermal properties
摘要：
A new binuclear nickel(II)complex[Ni_2(C_7N_4H_5)_3(C_9H_9O_2)]_n has been hydrothermally synthesized with nickel sulfate, 3-(pyridin-2-yl)-1H-1,2,4-triazole and 3,5-dimethylbenzoic acid (3,5-DMBA). It crystallizes in the triclinic space group P1with a = 11.5769(7), b = 12.3115(7), c = 12.6431(7)A, α = 81.4860(10)º, β = 64.2830(10)º, γ = 63.7130(10)º, V = 1453.45(15)A_3, Dc = 1.604 g/cm~3, Z = 2, F(000)= 720, the final GOOF = 1.048, R = 0.0285 and wR = 0.0628. The crystal structure shows that the whole molecule consists of two nickel ions bridged by three μ_2-η_1:η_0-3-(pyridin-2-yl)-1,2,4-triazole anions. The coordination environment of Ni(II)ion is NiO_2N_4 and NiN_5, giving a distorted octahedral geometry and square pyramidal geometry respectively. The luminescence and thermal properties of the complex were investigated.
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英文
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Microwave Solvothermal Synthesis, Crystal Structures and in Vitro Antitumor Activities of Di-n-butyltin Piperonylate with a Sn_4O_4 Ladder Framework
作者：
Kuang Dai-Zhi* ;Feng Yong-Lan;Jiang Wu-Jiu;Zhu Xiao-Ming;Yu Jiang-Xi;...
期刊：
Chinese Journal of Structural Chemistry ,2018年37(8):1265-1271 ISSN：0254-5861
通讯作者：
Kuang Dai-Zhi
作者机构：
[Jiang Wu-Jiu; Feng Yong-Lan; Kuang Dai-Zhi; Zhang Fu-Xing; Yu Jiang-Xi; Zhu Xiao-Ming] Hengyang Normal Univ, Key Lab Funct Metorgan Cpds Hunan Prov, Key Lab Funct Organometall Mat, Coll Hunan Prov,Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Kuang Dai-Zhi] H;Hengyang Normal Univ, Key Lab Funct Metorgan Cpds Hunan Prov, Key Lab Funct Organometall Mat, Coll Hunan Prov,Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
di-n-butyltin piperonylate;microwave solvothermal synthesis;ladder-like framework;in vitro antitumor activity
摘要：
A two-dimensional supramolecular compound di-n-butyltin piperonylate, {(μ3-O)(μ2-OMe)(n-Bu2Sn)2[O2CAr(C2H4O)]}2 constructed by hydrogen bonds with a Sn4O4 ladder-like framework, was obtained by the microwave-assisted solvothermal reaction of di-n-butyltin oxide precursor with the piperonylic acid in methanol environments. The composite was characterized by elemental analysis and IR (1H,13C and119Sn) NMR spectra. The compound crystallizes in monoclinic system, space group P21/n with a = 13.3690(12), b = 14.1442(14), c = 16.4022(16) Å, β = 107.191(6)°, V = 2963.0(5) Å3, Z = 2, Dc = 1.520 g/cm3, F(000) = 1368, μ = 1.719 mm-1, MoKα radiation (λ = 0.71073 Å), the final R = 0.0495 and wR = 0.1260 for 6780 observed reflections with I > 2σ(I). Its X-ray crystallography diffraction analyses show a Sn4O4 ladder-like skeleton, in which two endocyclic tin and one exo tin atoms are bonded to the μ3-O atom. In addition, one endocyclic tin and one exo tin atoms are respectively bonded to the μ2-O atom from methanol. The ladder-like molecule has a three-ring fused skeleton, which is almost coplanar. The endocyclic and exocyclic tin atoms were all five-coordinated with distorted trigonal bipyramidal geometry. The antitumor activity showed that the compound had higher activities than cisplatin in HT-29, HepG2, MCF-7, KB and A549 cell line in vitro. © 2018 Fujian Institute of Research of the Structure of Matter. All Rights Reserved.
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英文
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Synthesis, Crystal Structure and Properties of A Triphenyltin Schiff Complex with Salicylidene-2-aminophenol
作者：
Zhang Fu-Xing* ;Wu Qian;Kuang Dai-Zhi;Yu Jiang-Xi;Jiang Wu-Jiu;...
期刊：
Chinese Journal of Structural Chemistry ,2018年37(2):270-276 ISSN：0254-5861
通讯作者：
Zhang Fu-Xing
作者机构：
[Jiang Wu-Jiu; Wu Qian; Kuang Dai-Zhi; Zhang Fu-Xing; Yu Jiang-Xi; Zhu Xiao-Ming] Hengyang Normal Univ, Key Lab Funct Met Organ Cpds Hunan Prov, Key Lab Funct Organometall Mat, Dept Chem & Mat Sci,Coll Hunan Prov, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Zhang Fu-Xing] H;Hengyang Normal Univ, Key Lab Funct Met Organ Cpds Hunan Prov, Key Lab Funct Organometall Mat, Dept Chem & Mat Sci,Coll Hunan Prov, Hengyang 421008, Hunan, Peoples R China.
关键词：
triphenyltin complex with salicylidene-2-aminophenol;organotin;synthesis
摘要：
The triphenyltin complex with salicylidene-2-aminophenol (C_(31)H_(24)NO_2Sn, 1) has been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and X-ray single-crystal diffraction. The complex crystallizes in monoclinic system, P2_1/c space group with a = 1.09515(8), b = 1.17739(8), c = 2.29075(14) nm, β = 117.070(4)°, V = 2.6302(3) nm~3, Z = 4, D_c = 1.417 g/cm~3, μ = 0.999 mm~(-1), F(000) = 1123, R = 0.0472 and wR = 0.1169. X-ray single-crystal diffraction showed that 1 demonstrates a one-dimensional chain structure. The quantum chemical calculation of 1 has been investigated. Complex 1 emits fluorescence at 558 nm and exhibits certain inhibitory activity against NCI-H460, A549 and MCF-7.
语种：
英文
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Covalent coupling of porphines to graphene edges: Quantum transport properties and their applications in electronics
作者：
Zeng, Jing* ;Chen, Ke-Qiu* ;Tong, Yu-Xuan
期刊：
Carbon ,2018年127:611-617 ISSN：0008-6223
通讯作者：
Zeng, Jing;Chen, Ke-Qiu
作者机构：
[Zeng, Jing; Tong, Yu-Xuan] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.;[Chen, Ke-Qiu] Hunan Univ, Sch Phys & Elect, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China.;[Zeng, Jing] Hunan Prov Key Lab Intelligent Informat Proc & Ap, Hengyang 421002, Peoples R China.
通讯机构：
[Zeng, Jing; Chen, Ke-Qiu] H;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.;Hunan Univ, Sch Phys & Elect, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China.
关键词：
Graphene;Hybrid system;Porphine;Transport property
摘要：
Recently, He et al. succeeded in covalently linking porphines to graphene edges on a Ag(111) substrate by dehydrogenative coupling [Nat. Chem. 9 (1) (2017) 33–38], thus created a new hybrid material with tunable functionalities. Motivated by this work, we further investigate the electron transport properties of three porphine/graphene coupling motifs observed by scanning-probe technology with submolecular resolution in the experiment. By using density-functional theory combined with the Keldysh nonequilibrium Green's technique, we find many interesting electron transport phenomena in these new hybrid structures. Conductivity enhancement can be observed when porphines are covalently bound to the edges of specific armchair graphene nanoribbon (AGNR) and symmetric zigzag GNR (ZGNR). However, the origin of conductivity enhancement in the AGNR related hybrid system is completely different from that in the ZGNR related system. Moreover, negative differential resistance (NDR) behaviors can be found in ZGNR related coupling configurations. In particular, two different NDR mechanisms are found in these hybrid systems. © 2017 Elsevier Ltd
语种：
英文
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Decoherence Suppression in Phase Decoherence Environment Using Weak Measurement and Quantum Measurement Reversal
作者：
Wang, Qiong* ;Tang, Jian-Sheng;He, Zhi;Yuan, Ji-Bing
期刊：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS ,2018年57(12):3682-3688 ISSN：0020-7748
通讯作者：
Wang, Qiong
作者机构：
[Wang, Qiong] Changsha Normal Univ, Dept Jr Educ, Changsha 410100, Hunan, Peoples R China.;[Wang, Qiong; He, Zhi] Hunan Univ Arts & Sci, Coll Phys & Elect, Changde 415000, Hunan, Peoples R China.;[Tang, Jian-Sheng] Hunan First Normal Univ, Coll Educ & Sci, Changsha 410205, Hunan, Peoples R China.;[Yuan, Ji-Bing] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Wang, Qiong] C;[Wang, Qiong] H;Changsha Normal Univ, Dept Jr Educ, Changsha 410100, Hunan, Peoples R China.;Hunan Univ Arts & Sci, Coll Phys & Elect, Changde 415000, Hunan, Peoples R China.
关键词：
Weak measurement;Quantum measurement reversal;Decoherence suppression;Phase decoherence
摘要：
Decoherence suppression from disturbance of the environment is an essential task in quantum information processing. We investigate decoherence suppression of a qubit system interacting with a heat bath with phase decoherence by employing the weak measurement (WM) and quantum measurement reversal (QMR) operation. We show explicitly that the qubit decoherence can be efficiently completely suppressed by means of the combination WM and QMR, which is independent of the form of the spectral density of the reservoir and the form of initial input state.
语种：
英文
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Janus MoSSe Nanotubes: Tunable Band Gap and Excellent Optical Properties for Surface Photocatalysis
作者：
Tang, Zhen-Kun;Wen, Bo;Chen, Mingyang;Liu, Li-Min*
期刊：
Advanced Theory and Simulations ,2018年1(10):1800082- ISSN：2513-0390
通讯作者：
Liu, Li-Min
作者机构：
[Tang, Zhen-Kun] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.;[Tang, Zhen-Kun; Chen, Mingyang; Wen, Bo] Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China.;[Liu, Li-Min] Beihang Univ, Sch Phys, Beijing 100191, Peoples R China.
通讯机构：
[Liu, Li-Min] B;Beihang Univ, Sch Phys, Beijing 100191, Peoples R China.
关键词：
electronic structures;first-principles calculations;Janus nanotubes;optical properties
摘要：
Transition metal chalcogenides have attracted considerable attention because of their wide applications in solving energy and environmental problems. Here, the electronic structures and optical properties of Janus MoSSe nanotubes are explored by first-principles calculations. It is shown that the Janus MoSSe nanotubes exhibit versatile electronic properties. All zigzag MoSSe nanotubes exhibit a direct band gap with a good optical absorption. More interestingly, the electronic structure of the armchair MoSSe nanotubes is greatly dependent on the radius. The nanotubes are indirect semiconductors at a small radius of 7.4Å, and they could gradually become direct semiconductors with the increase of the radius of armchair MoSSe nanotubes. Further, the optical absorption abilities of the armchair MoSSe nanotubes can be further modulated by axial stress. The suitable band gap, lower formation energy, and tunable band gap of the armchair MoSSe nanotubes enable them to have great potential applications for optoelectronics and photocatalysis as low-dimensional nanomaterials. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
语种：
英文
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EXISTENCE AND STABILITY OF PERIODIC SOLUTIONS FOR STOCHASTIC FUZZY CELLULAR NEURAL NETWORKS WITH TIME-VARYING DELAY ON TIME SCALES
作者：
Zhang, Qianhong* ;Lin, Fubiao;Wang, Guiying;Long, Zuqiang
期刊：
Dynamic Systems and Applications ,2018年27(4):851-871 ISSN：1056-2176
通讯作者：
Zhang, Qianhong
作者机构：
[Lin, Fubiao; Zhang, Qianhong; Wang, Guiying; Long, Zuqiang] Guizhou Univ Finance & Econ, Sch Math & Stat, Guiyang 550025, Guizhou, Peoples R China.;Hengyang Normal Univ, Dept Comp, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Zhang, Qianhong] G;Guizhou Univ Finance & Econ, Sch Math & Stat, Guiyang 550025, Guizhou, Peoples R China.
关键词：
periodic solutions;stochastic fuzzy cellular neural networks;Gronwall's inequality;time-varying delay;time scales
摘要：
By applying contraction mapping theorem and Gronwall's inequality on time scale, we establish some sufficient conditions on the existence and global exponential stability of periodic solutions for a kind of stochastic fuzzy cellular neural networks on time scales. Moreover an example is presented to illustrate the feasibility of our results obtained.
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英文
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Understanding the energy level matching relationships between semiconductor photocatalysts and organic pollutants for effective photocatalytic degradations
作者：
Tong, Haixia;Zhan, Xiaojun;Tian, Xiong;Li, Junhua;Qian, Dong* ;...
期刊：
Journal of Colloid and Interface Science ,2018年526:384-391 ISSN：0021-9797
通讯作者：
Wu, Daoxin;Qian, Dong
作者机构：
[Tian, Xiong; Wu, Daoxin; Tong, Haixia; Zhan, Xiaojun] Changsha Univ Sci & Technol, Inst Chem & Biol Engn, Changsha 410114, Hunan, Peoples R China.;[Tong, Haixia; Li, Junhua; Qian, Dong] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Li, Junhua] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.
通讯机构：
[Wu, Daoxin; Qian, Dong] C;Changsha Univ Sci & Technol, Inst Chem & Biol Engn, Changsha 410114, Hunan, Peoples R China.;Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
Degradation;Energy level matching;Phenol and its derivatives;Photocatalyst
摘要：
In this work, representative semiconductors CdS, V<inf>2</inf>O<inf>5</inf>, WO<inf>3</inf>and P25 (Degussa TiO<inf>2</inf>consisting of 80 wt% anatase and 20 wt% rutile) were chosen as the photocatalysts, and the common phenol along with its derivatives (p-nitrophenol, p-chlorophenol and hydroquinone) were designated as the probe pollutants. The energy levels of the frontier molecular orbitals (E<inf>HOMO</inf>and E<inf>LUMO</inf>) of organics, and the valence band (VB) and conduction band (CB) energy levels (E<inf>VB</inf>and E<inf>CB</inf>) of photocatalysts were obtained through experiments and calculations. By correlating the photocatalytic activities of photocatalysts for the degradations of the organic pollutants under the irradiation of a 300 W xenon lamp with their above-mentioned energy levels, some new findings can be acquired. To be specific, the more positive E<inf>HOMO</inf>of an organic pollutant leads to its easier photodegradation by photocatalysts. Meanwhile, the more negative VB position for a photocatalyst results in the higher photocatalytic activities for the degradations of organic pollutants. Therefore, the matching correlation between the E<inf>HOMO</inf>of an organic pollutant and the E<inf>VB</inf>of a photocatalyst is of great importance to the efficiency of photocatalytic degradation.<br/> ©2018 Elsevier Inc.
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英文
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Factors influencing tourists’ litter management behavior in mountainous tourism areas in China
作者：
Hu, Huan;Zhang, Jinhe* ;Chu, Guang;Yang, Jinhua;Yu, Peng
期刊：
Waste Management ,2018年79(1):273-286 ISSN：0956-053X
通讯作者：
Zhang, Jinhe
作者机构：
[Yu, Peng; Hu, Huan; Chu, Guang; Yang, Jinhua; Zhang, Jinhe] Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing, Jiangsu, Peoples R China.;[Yang, Jinhua] Hengyang Normal Univ, Coll City & Tourism, Hengyang, Hunan, Peoples R China.
通讯机构：
[Zhang, Jinhe] N;Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing, Jiangsu, Peoples R China.
关键词：
Incentive measures;Pro-environmental behaviors;The theory of planned behavior;Tourism litter management;Travel companions
摘要：
Bringing self-generated litter down the mountain is an emerging pro-environmental behavior to solve the problem of trail's litter management in China. This study is the first attempt to explore a theoretical explanation model that explicates tourists' complex intention-forming process for engaging in it. The study extended the Theory of Planned Behavior model, including three additional explaining variables (environmental theory knowledge, environmental practice knowledge, and incentive measures), as well as a moderator of travel companions between subjective norm and the behavioral intention. The data were collected in questionnaire survey samples of 372 tourists in Huangshan National Park (HNP) and analyzed by the method of the structural equation model. The results showed that (1) attitude toward the behavior, subjective norm, perceived behavioral control and incentive measures significantly affected the behavioral intention; (2) environmental theory knowledge and environmental practice knowledge had indirect effects on the behavioral intention via the mediator of attitude toward the behavior; and (3) the strength of the relationship for the family group between subjective norm and the behavioral intention was significantly greater than the non-family group. Finally, we presented several effective suggestions to improve tourists' intention of bringing self-generated litter down the mountain. (C) 2018 Elsevier Ltd. All rights reserved.
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英文
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Frankenstein: Learning Deep Face Representations Using Small Data
作者：
Hu, Guosheng;Peng, Xiaojiang* ;Yang, Yongxin;Hospedales, Timothy M.;Verbeek, Jakob
期刊：
IEEE Transactions on Image Processing ,2018年27(1):293-303 ISSN：1057-7149
通讯作者：
Peng, Xiaojiang
作者机构：
[Verbeek, Jakob; Hu, Guosheng] Univ Grenoble Alpes, INRIA, CNRS, Grenoble INP,LJK, F-38000 Grenoble, France.;[Peng, Xiaojiang] Hengyang Normal Univ, Hengyang 421008, Peoples R China.;[Yang, Yongxin] Queen Mary Univ London, Elect Engn & Comp Sci, London E1 4NS, England.;[Hospedales, Timothy M.] Univ Edinburgh, Edinburgh EH8 9JS, Midlothian, Scotland.
通讯机构：
[Peng, Xiaojiang] H;Hengyang Normal Univ, Hengyang 421008, Peoples R China.
关键词：
Face recognition;deep learning;small training data
摘要：
Deep convolutional neural networks have recently proven extremely effective for difficult face recognition problems in uncontrolled settings. To train such networks, very large training sets are needed with millions of labeled images. For some applications, such as near-infrared (NIR) face recognition, such large training data sets are not publicly available and difficult to collect. In this paper, we propose a method to generate very large training data sets of synthetic images by compositing real face images in a given data set. We show that this method enables to learn models from as few as 10 000 training images, which perform on par with models trained from 500 000 images. Using our approach, we also obtain state-of-the-art results on the CASIA NIR-VIS2.0 heterogeneous face recognition data set.
语种：
英文
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A Tabu Search algorithm for the vehicle routing problem with discrete split deliveries and pickups
作者：
Qiu, Meng;Fu, Zhuo* ;Eglese, Richard;Tang, Qiong
期刊：
Computers & Operations Research ,2018年100:102-116 ISSN：0305-0548
通讯作者：
Fu, Zhuo
作者机构：
[Fu, Zhuo; Tang, Qiong; Qiu, Meng] Cent S Univ, Sch Traff & Transportat Engn, Changsha 410075, Hunan, Peoples R China.;[Eglese, Richard] Univ Lancaster, Management Sch, Lancaster, England.;[Tang, Qiong] Hengyang Normal Univ, Coll Econ & Management, Hengyang 421008, Peoples R China.
通讯机构：
[Fu, Zhuo] C;Cent S Univ, Sch Traff & Transportat Engn, Changsha 410075, Hunan, Peoples R China.
关键词：
Discrete split;Pickup and delivery;Routing;Tabu search
摘要：
The Vehicle Routing Problem with Discrete Split Deliveries and Pickups is a variant of the Vehicle Routing Problem with Split Deliveries and Pickups, in which customers’ demands are discrete in terms of batches (or orders). It exists in the practice of logistics distribution and consists of designing a least cost set of routes to serve a given set of customers while respecting constraints on the vehicles’ capacities. In this paper, its features are analyzed. A mathematical model and Tabu Search algorithm with specially designed batch combination and item creation operation are proposed. The batch combination operation is designed to avoid unnecessary travel costs, while the item creation operation effectively speeds up the search and enhances the algorithmic search ability. Computational results are provided and compared with other methods in the literature, which indicate that in most cases the proposed algorithm can find better solutions than those in the literature. © 2018
语种：
英文
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Long-Lived and Highly Efficient TADF-PhOLED with “(A)n–D–(A)n” Structured Terpyridine Electron-Transporting Material
作者：
Bian, Mengying;Zhang, Dongdong;Wang, Yuanxun;Chung, Yao-Hsien;Liu, Yang;...
期刊：
Advanced Functional Materials ,2018年28(28):1800429- ISSN：1616-301X
通讯作者：
Xiao, Lixin;Liu, Zhiwei
作者机构：
[Chung, Yao-Hsien; Bian, Mengying; Ting, Hungkit; Xiao, Lixin; Chen, Zhijian] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China.;[Chung, Yao-Hsien; Bian, Mengying; Ting, Hungkit; Xiao, Lixin; Chen, Zhijian] Peking Univ, Dept Phys, Beijing 100871, Peoples R China.;[Zhang, Dongdong; Duan, Lian] Tsinghua Univ, Minist Educ, Dept Chem, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China.;[Wang, Yuanxun] Valiant Corp, Yantai 264006, Shandong, Peoples R China.;[Liu, Zhiwei; Liu, Yang; Bian, Zuqiang] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China.
通讯机构：
[Xiao, Lixin; Liu, Zhiwei] P;[Xiao, Lixin] H;Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China.;Peking Univ, Dept Phys, Beijing 100871, Peoples R China.;Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China.
关键词：
electron-transporting;long lifetime;organic light-emitting diodes;phosphorescence;terpyridine;thermally activated delayed fluorescence
摘要：
The electron-transporting material (ETM) is one of the key factors to determine the efficiency and stability of organic light-emitting diodes (OLEDs). A novel ETM with a “(Acceptor)<inf>n</inf>–Donor–(Acceptor)<inf>n</inf>”(“(A)<inf>n</inf>–D–(A)<inf>n</inf>”) structure, 2,7-di([2,2′:6′,2″-terpyridin]-4′-yl)-9,9′-spirobifluorene (27-TPSF), is synthesized by combining electron-withdrawing terpyridine (TPY) moieties and rigid twisted spirobifluorene, in which the TPY moieties facilitate electron transport and injection while the spirobifluorene moiety ensures high triplet energy (T<inf>1</inf>= 2.5 eV) as well as enhances glass transition temperature (T<inf>g</inf>= 195 °C) for better stability. By using tris[2-(p-tolyl)pyridine]iridium(III) (Ir(mppy)<inf>3</inf>) as the emitter, the 27-TPSF-based device exhibits a maximum external quantum efficiency (η<inf>ext, max</inf>) of 24.5%, and a half-life (T<inf>50</inf>) of 121, 6804, and 382 636 h at an initial luminance of 10 000, 1000, and 100 cd m<sup>−2</sup>, respectively, which are much better than the commercialized ETM of 9,10-bis(6-phenylpyridin-3-yl)anthracene (DPPyA). Furthermore, a higher efficiency, a η<inf>ext, max</inf>of 28.2% and a maximum power efficiency (η<inf>PE</inf>,<inf>max</inf>) of 129.3 lm W<sup>−1</sup>, can be achieved by adopting bis(2-phenylpyridine)iridium(III)(2,2,6,6-tetramethylheptane-3,5-diketonate) (Ir(ppy)<inf>2</inf>tmd) as the emitter and 27-TPSF as the ETM. These results indicate that the derivative of TPY to form “(A)<inf>n</inf>–D–(A)<inf>n</inf>”structure is a promising way to design an ETM with good comprehensive properties for OLEDs.<br/> ©2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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英文
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The effect of dietary amylose/amylopectin ratio on serum and hepatic lipid content and its molecular mechanisms in growing-finishing pigs
作者：
Yang, C.;He, J.;Yu, B.;Yu, J.;Mao, X. B.;...
期刊：
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION ,2018年102(6):1657-1665 ISSN：0931-2439
通讯作者：
Chen, D. W.
作者机构：
[Yu, J.; He, J.; Mao, X. B.; Yu, B.; Chen, D. W.; Yang, C.] Sichuan Agr Univ, Inst Anim Nutr, Yaan, Sichuan, Peoples R China.;[Yang, C.] Hengyang Normal Univ, Coll Life Sci & Environm, Hengyang, Hunan, Peoples R China.;[Yin, Y. L.; Yang, C.] Hunan Normal Univ, Anim Nutr & Human Hlth Lab, Changsha, Hunan, Peoples R China.
通讯机构：
[Chen, D. W.] S;Sichuan Agr Univ, Inst Anim Nutr, Yaan, Sichuan, Peoples R China.
关键词：
dietary amylose/amylopectin ratio;glucose;growing-finishing pigs;lipid;liver
摘要：
This study was conducted to investigate the effects of dietary amylose/amylopectin ratio (DAR) on serum and hepatic lipid content, luminal short-chain fatty acid (SCFA) concentrations, and the expression of host genes involved in fat and glucose metabolism in liver and mucosa in growing-finishing pigs. Forty-eight Duroc × Landrace × Large White pigs (49.8 ± 2.8 kg) were randomly allocated to low amylose/amylopectin ratio (LR) and high amylose/amylopectin ratio (HR) groups, each group consisting of six replicates (pen) with four pigs per pen. The DAR was 12/88 for LR and 30/70 for HR. Experiment lasted for 67 days. Results showed that, compared with HR group, ingestion of LR significantly increased the liver total lipid and cholesterol concentration (p <.05) and decreased the serum LDL-C concentration (p <.05). The concentration of propionate, butyrate and total SCFAs in caecum digesta was significantly lower in LR group than in HR group (p <.05). We observed a significant increase in glucose transporter 2 (GLUT2), sodium-dependent glucose transporter 1 (SGLT1) gene expression in LR-fed pigs in the jejunum mucosa (p <.01). A decrease in Na+-coupled monocarboxylate transporter (SMCT1) and free fatty acid receptor 3 (FFAR3) expression was found in the ileum mucosa with LR group (p <.05). Ingestion of LR diet significantly decreased the hexokinase (p <.01) and tend to decrease the pyruvate kinase (p =.050) activities in the liver. Meanwhile, the present results indicated that ingestion of LR diet significantly increased the transcription of gluconeogenesis and lipogenic genes such as forkhead box O1 (FOXO1), fatty acid synthetase3 (FAS3) (p <.05). These findings demonstrated that high amylopectin has harmful effects on hepatic lipid deposit through the modulation of the liver Foxo1 signalling and should be avoided from one's diet. © 2018 Blackwell Verlag GmbH
语种：
英文
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A nearly perfect spin filter and a spin logic gate based on a porphyrin/graphene hybrid material
作者：
Zeng, Jing* ;Chen, Ke-Qiu*
期刊：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS ,2018年20(6):3997-4004 ISSN：1463-9076
通讯作者：
Zeng, Jing;Chen, Ke-Qiu
作者机构：
[Zeng, Jing] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.;[Zeng, Jing] Hunan Prov Key Lab Intelligent Informat Proc & Ap, Hengyang 421002, Peoples R China.;[Chen, Ke-Qiu] Hunan Univ, Sch Phys & Elect, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Zeng, Jing; Chen, Ke-Qiu] H;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.;Hunan Prov Key Lab Intelligent Informat Proc & Ap, Hengyang 421002, Peoples R China.;Hunan Univ, Sch Phys & Elect, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China.
摘要：
Although a lot of theoretical studies have designed perfect spin filters using inorganic/organic/organometallic materials, their fabrication methods are not experimentally feasible. This dilemma could be solved by a recent experiment, where porphyrins have been covalently coupled to graphene edges in a precise manner (Y. He et al., Nat. Chem., 2017, 9, 33-38). In particular, experimental results confirmed that the intrinsic features of porphyrins for metallation are preserved after dehydrogenative coupling to graphene edges, paving the way for realizing synthesizable spintronic devices. Inspired by this work, we report new M-porphyrin/graphene (M = Cr, Mn, Fe, and Co) hybrid systems with tunable functionalities on the basis of nonequilibrium Green's functions in combination with density functional theory. The Mn-porphyrin/graphene hybrid system exhibits an extremely high spin polarization coefficient in a parallel magnetic configuration. Our results also confirm that the magnetic configuration plays an important role in realizing a high-performance spin filter. The interesting spin transport properties in the parallel and antiparallel magnetic configurations also make the hybrid system a suitable candidate for realizing the AND logic operation.
语种：
英文
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Research on Optimization Modeling of Mental Health Quality of College Students
作者：
Tang, Fanggui*
期刊：
Chimica Oggi ,2018年36(6):1299-1301 ISSN：0392-839X
通讯作者：
Tang, Fanggui
作者机构：
[Tang, Fanggui] Hengyang Normal Univ, Coll Educ Sci, Hengyang 421002, Hunan, Peoples R China.
通讯机构：
[Tang, Fanggui] H;Hengyang Normal Univ, Coll Educ Sci, Hengyang 421002, Hunan, Peoples R China.
关键词：
Fuzzy clustering algorithm;College students;Modeling and simulation
摘要：
The rational modeling of College Students' mental health quality can make an accurate analysis of College Students' mental state and provide theoretical basis for eliminating college students' psychology. It was researched on College Students' psychological health quality optimization modeling and simulation. First it elaborated the fuzzy clustering algorithm. Then the algorithm model of College Students' psychological principle based on information system. Finally the algorithm was tested on the experiment and simulation. Synthetic data sets and gets the conclusion: this algorithm has obtained better clustering effect and it also confirms the effectiveness of multi view clustering technique, the simulation results show that the proposed model provides a strong basis for the promotion of College Students' mental health.
语种：
英文
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Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes
作者：
He, Quanguo;Liu, Jun;Liu, Xiaopeng;Li, Guangli;Deng, Peihong* ;...
期刊：
Sensors ,2018年18(6):1911 ISSN：1424-3210
通讯作者：
Chen, Dongchu;Deng, Peihong
作者机构：
[He, Quanguo; Li, Guangli; Liu, Jun; Chen, Dongchu] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China.;[He, Quanguo; Deng, Peihong; Liang, Jing; Liu, Xiaopeng] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.;[He, Quanguo; Li, Guangli; Deng, Peihong; Liang, Jing; Liu, Xiaopeng; Liu, Jun] Hunan Univ Technol, Coll Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.
通讯机构：
[Chen, Dongchu] F;[Deng, Peihong] H;Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China.;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.;Hunan Univ Technol, Coll Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.
关键词：
electrocatalysis;modified electrode;reduced graphene oxide;tartrazine;titanium dioxide
摘要：
TiO<inf>2</inf>-reduced graphene oxide composite-modified glassy carbon electrodes (TiO<inf>2</inf>–ErGO–GCE) for the sensitive detection of tartrazine were prepared by drop casting followed by electrochemical reduction. The as-prepared material was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Cyclic voltammetry and second-order derivative linear scan voltammetry were performed to analyze the electrochemical sensing of tartrazine on different electrodes. The determination conditions (including pH, accumulation potential, and accumulation time) were optimized systematically. The results showed that the TiO<inf>2</inf>–ErGO composites increased the electrochemical active area of the electrode and enhanced the electrochemical responses to tartrazine significantly. Under the optimum detection conditions, the peak current was found to be linear for tartrazine concentrations in the range of 2.0 ×10<sup>−8</sup>–2.0 ×10<sup>−5</sup>mol/L, with a lower detection limit of 8.0 ×10<sup>−9</sup>mol/L (S/N = 3). Finally, the proposed TiO<inf>2</inf>–ErGO–GCEs were successfully applied for the detection of trace tartrazine in carbonated beverage samples.<br/> ©2018 by the authors. Licensee MDPI, Basel, Switzerland.
语种：
英文
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Ketjen black carbon supported CoO@Co−N−C nanochains as an efficient electrocatalyst for oxygen evolution
作者：
Liu, Guiyu y;Liu, Jinlong;Liu, Beibei;Yang, Chunming;Qian, Dong* ;...
期刊：
International Journal of Hydrogen Energy ,2018年43(51):22942-22948 ISSN：0360-3199
通讯作者：
Qian, Dong;Li, Junhua
作者机构：
[Liu, Guiyu y; Liu, Jinlong; Liu, Beibei; Qian, Dong] Cent South Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Chem Power Resources, Hunan Prov Key Lab Efficient & Clean Utilizat Man, Changsha 410083, Hunan, Peoples R China.;[Liu, Guiyu y; Li, Junhua] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;[Liu, Jinlong; Yang, Chunming] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
通讯机构：
[Qian, Dong] C;[Li, Junhua] H;Cent South Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Chem Power Resources, Hunan Prov Key Lab Efficient & Clean Utilizat Man, Changsha 410083, Hunan, Peoples R China.;Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.
关键词：
Electrocatalyst;Ketjen black carbon;Oxygen evolution reaction;Synergistic effect;[email protected]−N−C
摘要：
We demonstrate an extremely facile in-situ pyrolysis followed by the reduction of partial Co 2+ route to synthesize novel Ketjen black carbon (KB) supported [email protected]−N−C (denoted as [email protected]−NC/KB) nanochains using KB, urea and cobalt (Ⅱ) acetate as co-precursors. The as-prepared [email protected]/KB displays higher electrocatalytic activity, smaller Tafel slope and better durability for the oxygen evolution reaction than those of the benchmark commercial RuO 2 catalyst in 1.0 M KOH solution, far outperforming the control groups (i.e. [email protected]−g-C 3 N 4 /KB, Co−NC/KB, CoO−NC/KB, [email protected]/KB, [email protected]−NC and Co 3 O 4 −NC/KB). The remarkable electrocatalytic performance of [email protected]−NC/KB is primarily credited to the synergistic effect between Co and CoO species with a core-shell structure, increased active sites and considerably enhanced electronic conductivity. © 2018 Hydrogen Energy Publications LLC
语种：
英文
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N-doped carbon coated anatase TiO2 nanoparticles as superior Na-ion battery anodes
作者：
Wang, Jin;Liu, Guiyu;Fan, Kaili;Zhao, Dan;Liu, Beibei;...
期刊：
Journal of Colloid and Interface Science ,2018年517:134-143 ISSN：0021-9797
通讯作者：
Qian, Dong;Li, Junhua
作者机构：
[Wang, Jin; Fan, Kaili; Zhao, Dan; Liu, Beibei; Qian, Dong; Liu, Guiyu] Cent S Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Chem Power Resources, Changsha 410083, Hunan, Peoples R China.;[Li, Junhua] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;[Jiang, Jianbo] Jishou Univ, Coll Chem & Chem Engn, Jishou 416000, Peoples R China.;[Yang, Chunming] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
通讯机构：
[Qian, Dong] C;[Li, Junhua] H;Cent S Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Chem Power Resources, Changsha 410083, Hunan, Peoples R China.;Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.
关键词：
Coated;Dopamine;N-doped carbon layer;Sodium ion battery;TiO(2)
摘要：
N-doped carbon coated TiO<inf>2</inf>nanoparticles (TiO<inf>2</inf>@NC) were synthesized through a simple two-step route, in which dopamine was simultaneously utilized as both nitrogen and carbon sources. With TiO<inf>2</inf>@NC applied in the Na-ion battery (SIB) anodes, the continuous and uniform N-doped carbon layer can not only enhance the electrical conductivity of TiO<inf>2</inf>and facilitate the surface pseudocapacitive process, but also serve as a buffer layer to accommodate the volume expansion during the sodiation–desodiation processes. The as-prepared TiO<inf>2</inf>@NC exhibits excellent electrochemical performance when utilized as the SIB anodes, which delivers a remarkably high reversible capacity of 250.2 mAh g<sup>−1</sup>at a rate of 0.25C (84 mA g<sup>−1</sup>) after 200 cycles and still retains 122.1 mAh g<sup>−1</sup>at 10C (3.35 A g<sup>−1</sup>) even after 3000 cycles accompanied with a 95.3% retention of the maximum capacity, outperforming most of the reported TiO<inf>2</inf>/C-based composites as SIB anodes. To our best knowledge, the preparation of TiO<inf>2</inf>@NC with dopamine as both nitrogen and carbon sources and its application in the SIB anodes are reported for the first time.<br/> ©2018 Elsevier Inc.
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英文
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