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Interspecific variation of thermoregulation between small migratory and resident passerines in Wenzhou

Zoological Research 2016年第3期37卷 167-175页

作者： qing-gang qiao Hong-Ji LIANG Min-Lan BAI Wei-Hong ZHENG Jin-Song LIU School of Life and Environmental Sciences Wenzhou UniversityWenzhou 325035China Zhejiang Provincial Key Lab for Subtropical Water Environment and Marine Biological Resources Protection Wenzhou 325035China

Physiological adaptation arises from several fundamental sources of phenotypic variation. Most analyses of metabolic adaptation in birds have focused on the basal metabolic rate （BMR）, the lower limit of avian metabolic heat production. In this study, we investigated thermoregulation in three passerine species; the yellow-billed grosbeak Eophona migratoria, white-rumped munia Lonchura striata and black-throated bushtit Aegithalos concinnus, in Wenzhou, China. Metabolic rate was measured using the closed-circuit respirometer containing 3.5 L animal chambers. Body temperature （Tb） was measured during metabolic measurements using a lubricated thermocouple. The minimum thermal conductance of these species was calculated by measuring their Tb and metabolic rates. The yellow-billed grosbeak remained largely normothermic, and the white-rumped munia and black-throated bushtit exhibited variable Tb at ambient temperatures （Ta）. Mean metabolic rates within thermal neutral zone were 2.48±0.09 02 （mL）/g/h for yellow-billed grosbeaks, 3.44±0.16 02 （mL）/g/h for white-rumped munias, and 3.55±0.20 O2 （mL）/g/h for black-throated bushtits, respectively. Minimum thermal conductance of yellow-billed grosbeak, white-rumped munia and black-throated bushtit were 0.13±0.00, 0.36±0.01, and 0.37±0.01 02 （mL）/g/h/℃, respectively. The ecophysiological characteristics of these species were：（1） the yellowbilled grosbeak had relatively high Tb and BMR, a low lower critical temperature and thermal conductance, and a metabolic rate that was relatively insensitive to variation in Ta; all of which are typical of cold adapted species and explain its broader geographic distribution; （2） the white-rumped munia and black- throated bushtit had high thermal conductance, lower critical temperature, and relatively low BMR, all which are adapted to warm environments where there is little selection pressure for metabolic thermogenesis. Taken together, these data illustrate small migratory and resident passeri

关键词： Basal metabolic rate Body temperature Thermal conductance Eophona migratoria Lonchurastriata Aegithalos concinnus

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Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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Journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-qing qiao Guo Hui Bojing Sun Dongfang Hou Meidi Wang Xueqian Wu Tao Wu Dong-Sheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Hubei Three Gorges Laboratory College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry Jinan University

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo2C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS （c-CdS） and hexagonal-CdS （h-CdS） leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo2C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H2production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Heterojunctions LSPR Photocatalyst Phase junction Schottky junction Photothermal effect

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Collision Classification MAC Protocol for Underwater Acoustic Communication Networks Using Directional Antennas

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China Communications 2022年第5期19卷 241-252页

作者： Jianmin Yang gang qiao qing Hu Lingji Xu Peng Xiao Jiarong Zhang School of Ocean Engineering and Technology Sun Yat-sen UniversityGuangzhou 518000China Acoustic Science and Technology Laboratory Harbin Engineer UniversityHarbin 150001China Key Laboratory of Marine Information Acquisition and Security Harbin Engineering UniversityMinistry of Industry and Information TechnologyHarbin 150001China College of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin 150001China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China Systems Engineering Research Institute Beijing 100094China

Traditional underwater acoustic communication networks(UACNs)generally use omnidirectional transmission technology that causes a large number of data-packet collisions,thus resulting in low network throughput and high end-to-end *** with omnidirectional transmission technology,directional technology only sends and receives data packets in a specified *** can significantly reduce the probability of collisions and improve network ***,it also causes a deafness problem,which occurs when the sending node sends a data packet to the receiving node but the receiving node is unable to reply to the sender,because its antenna beam is *** resolve this issue,this study proposes a collision classification media access control(CC-MAC)protocol for *** this protocol,the underwater acoustic channel is divided into two subchannels,and the nodes transmit corresponding data types on *** sending node can estimate the current status of the receiving node(i.e.,no collision,normal collision,deafness)according to the type of the data packet received and the sub-channel it arrived on,and it can choose correct options to improve network ***,we verify the performance of CC-MAC via simulations,showing that the protocol achieved higher network throughput and lower end-toend delays.

关键词： collision classification directional antennas dual channel media access control(MAC) underwater acoustic communication networks(UACNs)

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A robust beam tracking scheme for millimeter wave HetNets

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Digital Communications and Networks 2022年第6期8卷 1115-1121页

作者： qing Xue gang Feng Chongqing Key Laboratory of Mobile Communications Technology Chongqing University of Posts and Telecommunications(CQUPT)Chongqing400065China National Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of China(UESTC)Chengdu611731China State Key Laboratory of Internet of Things for Smart City University of MacaoMacaoChina

Millimeter Wave(mmWave)communication has been widely acknowledged as an attractive solution to address high-speed transmission of massive data in 5G and beyond 5G systems due to the promising spectrum ***,mmWave signals are highly susceptible to blockage and may suffer from rapidly changing ***,directional/beam tracking becomes imperative yet essential for robust mmWave *** address this challenge,we propose a robust beam tracking scheme for mmWave Heterogeneous Networks(HetNets)with *** from most existing schemes,the proposed beam tracking scheme is effective for outage *** first discuss theμWave-assisted beam tracking procedure with and without candidate beams,and then analyze the inherent correlation between mmWave link quality and the operating beamwidth and occlusion range to derive the optimal *** and numerical results show that the proposed beam tracking scheme can improve the robustness of mmWave communications while guaranteeing the rate performance.

关键词： Millimeter wave(mmWave)communication Beam tracking Multi-connectivity Robust

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Observability Analysis in Parameters Estimation of an Uncooperative Space Target

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Computer Modeling in Engineering & Sciences 2020年第1期122卷 175-205页

作者： Xianghao Hou gang qiao Acoustic Science and Technology Laboratory and College of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin150001China

To study the parameter estimating effects of a free-floating tumbling space target,the extended Kalman filter(EKF)scheme is utilized with different high-nonlinear translational and rotational coupled kinematic&dynamic models on the LIDAR *** the aforementioned models and measurements results in the situation where one single state can be estimated differently with varying accuracies since the EKFs based on different models have different *** the proposed EKFs,the traditional quaternions based kinematics and dynamics and the dual vector quaternions(DVQ)based kinematics and dynamics are used for the modeling of the relative motions between a chaser satellite and an uncooperative *** the non-contact estimating scenarios,only highly nonlinear relative attitude and range measurements:the grapple fixture on the target measured from the chaser satellite via vision-based sensors,can be *** evaluating the results of the EKFs,the observability properties of each EKF are studied analytically and numerically with the the Observability Gramian matrices(OG)and the standard deviations for every estimated *** analysis of observability perform intensive studies and reveal the intrinsic factors that affect the accuracy and stability of the parameters estimation of an uncooperative space ***,the analytical and numerical results show the optimal composition of the kinematic&dynamic models and measurements.

关键词： Parameter estimations observability analysis dual quaternions extended Kalman filter

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Selected-Mapping Peak-to-Average Power Reduction Method with Orthogonal Pilot Sequences in Underwater Acoustic OFDM System Without Side Information

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Chinese Journal of Electronics 2021年第1期30卷 160-163页

作者： qiao gang XING Siyu ZHOU Feng Acoustic Science and Technology Laboratory Harbin Engineering University Key Laboratory of Marine Information Acquisition and Security (Harbin Engineering University) Ministry of Industry and Information Technology College of Underwater Acoustic Engineering Harbin Engineering University

A novel Selected-mapping(SLM) Peak-to-average power ratio(PAPR) reduction scheme requires no Side information(SI) in Underwater acoustic(UWA)OFDM system is proposed. In the proposed scheme,every distinct phase sequence is represented by a unique Orthogonal comb pilot sequence(OPS), and the orthogonal properties of the OPSs are used to distinguish the index of phase sequences at the receiver. Therefore, the proposed scheme does not need to reserve bits for transmitting SI,so that the data rate can be raised. Simulation results show that the PAPR reduction performance has almost 0.5 d B gains comparing to the Conventional SLM(C-SLM)scheme and the Bit error ratio(BER) performance is approximately the same as the SLM scheme with perfect SI. Field experimental results also demonstrate that the proposed scheme can differentiate phase sequences,therefore significantly enhance the quality of the UWA OFDM communication system.

关键词： 0.5dB gains OFDM modulation noise figure 0.5 dB Bit error ratio performance orthogonal pilot sequences orthogonal properties peak-to-average power reduction method C-SLM distinct phase sequence novel Selected-mapping phase sequences error statistics channel estimation UWA OFDM communication system unique Orthogonal comb pilot sequence Conventional SLM scheme perfect SI PAPR reduction performance Peak-to-average power ratio reduction scheme underwater acoustic communication underwater acoustic OFDM system

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Measurements of momentum correlation and interaction parameters between antiprotons

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Nuclear Science and Techniques 2016年第6期27卷 67-73页

作者： Zheng-qiao Zhang Yu-gang Ma Shanghai Institute of Applied Physics Chinese Academy ofSciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

The two-particle momentum correlation is influenced by the nuclear force between two particles,which has been intensively studied for nucleons and nuclei,but not much for antinucleons or *** this proceeding,we present our STAR measurements on momentum correlation function of antiproton-antiproton and proton-proton in Au+Au collisions at S_(NN)^(1/2)= 200 GeV at the Relativistic Heavy Ion *** nuclear force between two antiprotons is demonstrated,and the strong interaction parameters(the scattering length and the effective range) are *** measurement serves as an additional verification of CPT *** present information on the strong force in the antiproton-antiproton system provides a fundamental ingredient towards understanding the structure of more sophisticated antinuclei.

关键词：动量相关作用相互作用参数反质子测量重离子对撞机散射长度核力量金+金

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RELATIVE BRIGHTNESS INDEX AND IT’S CLIMATIC SIGNIFICANCE FROM LACUSTRINE SEDIM ENT OF NAPAHAI LAKE,NORTHWESTERN YUNNAN PLATEAU,CHINA

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Chinese Geographical Science 2002年第3期12卷 58-62页

作者： Yin, Yong Fang, Nian-qiao Hu, Chao-yong Nie, Hao-gang qing, Zun-li The Key Laboratory of Coast & Island Development Nanjing University Nanjing P. R. China China University of Geosciences Beijing P. R. China China University of Geosciences Wuhan P. R. China

Information on the palaeoenvironm ent from Late Pleistocene to Holocen e in northwestern Yannan Plateau has been deduced from a study of a 28.81m-long core taken from Napahai *** results from Relative Brightness In-dex(RBI )as well as those from the lithological analyses of bulk sediments,total organic carbon and granulometric analy-ses have been used to reconstruct the environmental and climatic evoluti on of the *** ages were provided by three 14 C *** record suggested a climate fluctuation between warm-dry a nd cool-wet from ca.57to 32ka B.P.,which led a shallowing and swamping of the l *** water level again increased quickly at ca.32ka B.P.,reached it’ s peak during LGM(Last Glacial Maximum,ca.18-20ka B.P.)and remained relative high until ca.15ka *** high wa-ter level at LGM is attributed to cold-wet *** area experienced an abrupt and unstable climatic ch anges dur-ing the transition period from15to 10ka *** a dominated littoral en ***-dry climate led to the contrac-tion of the lake during the Holocene a nd reed-swamps became *** a minor wet-cool pulse during the L ate Holocene,the modern climate became to be established.

关键词： Relative Brightress Index total organic carbon particle size palaeoclimate Napahai Lake

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Spinodal surface instability of soft elastic thin films

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Acta Mechanica Sinica 2008年第3期24卷 289-296页

作者： Shi qing Huang Xi qiao Feng Department of Engineering Mechanics Tsinghua University Beijing 100084 China

When the thicknesses of thin films reduce to microns or even nanometers, surface energy and surface interaction often play a significant role in their deformation behavior and surface morphology. The spinodal surface instability induced by the van der Waals force in a soft elastic thin film perfectly bonded to a rigid substrate is investigated theoretically using the bifurcation theory of elastic structures. The analytical solution is derived for the critical condition of spinodal surface morphology instability by accounting for the competition of the van der Waals interaction energy, elastic strain energy and surface energy. Detailed examinations on the effect of surface energy, thickness and elastic properties of the film show that the characteristic wavelength of the deformation bifurcation mode depends on the film thickness via an exponential relation, with the power index in the range from 0.749 to 1.0. The theoretical solution has a good agreement with relevant experiment results.

关键词： Thin film Surface instability Surface energy van der Waals force

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ADMM-based Distributed Algorithm for Economic Dispatch in Power Systems With Both Packet Drops and Communication Delays

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IEEE/CAA Journal of Automatica Sinica 2020年第3期7卷 842-852页

作者： qing Yang gang Chen Ting Wang State Key Laboratory of Power Transmission Equipment and System Security and New Technology and the School of AutomationChongqing UniversityChongqing 400044China IEEE

By virtue of alternating direction method of multipliers(ADMM), Newton-Raphson method, ratio consensus approach and running sum method, two distributed iterative strategies are presented in this paper to address the economic dispatch problem(EDP) in power systems. Different from most of the existing distributed ED approaches which neglect the effects of packet drops or/and time delays, this paper takes into account both packet drops and time delays which frequently occur in communication networks. Moreover, directed and possibly unbalanced graphs are considered in our algorithms, over which many distributed approaches fail to converge. Furthermore, the proposed schemes can address the EDP with local constraints of generators and nonquadratic convex cost functions, not just quadratic ones required in some existing ED approaches. Both theoretical analyses and simulation studies are provided to demonstrate the effectiveness of the proposed schemes.

关键词： Alternating direction method of multipliers(ADMM) average consensus directed graph(digraph) distributed algorithm economic dispatch packet drops time delays

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