VARIATION

作品数：1509被引量：3058H指数：19
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Local song evolution after three decades in a complex songster,the Thrush Nightingale
《Avian Research》2025年第1期110-118,共9页Abel Souriau Jorma Sorjonen Adam Petrusek Tereza Petrusková 
Birdsong is an important secondary sexual trait which may vary between but also within species.Intraspecific variation is generally studied either on the geographical or on the temporal scale;most of the studies explo...
关键词：Cultural evolution Luscinia luscinia Song variation SONGBIRDS Temporal changes VOCALISATION 
Investigation of edge states variation in valley photonic crystals by modulating the refractive index of domain walls
《Optoelectronics Letters》2025年第3期160-166,共7页ZHANG Run ZHONG Xingli LIN Zhongxi QIU Weibin SU Hui 
supported by the Self-Deployment Project Research Program of the Haixi Institutes,Chinese Academy of Sciences(No.CXZX-2022-GH09);the National Natural Science Foundation of China(No.11774103);the Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China(No.2021ZR114)。
Realizing the valley Hall effect by breaking the spatial inversion symmetry of photonic systems has become a cutting-edge field of micro-nano-optics,since the valley degree of freedom was introduced into photonic syst...
关键词：modulation refractive index domain walls variation edge states breaking spatial inversion symmetry valley degree freedom photonic crystals geometric difference dielectric columns photonic systems 
Effects of subtle variation in forest canopy openness on cache pilferage and its implications for forest regeneration
《Integrative Zoology》2025年第1期135-143,共9页Hongying WANG Bo WANG Wenwen CHEN 
funded by the National Natural Science Foundation of China(32171533 and 31971444);the Anhui Provincial Natural Science Foundation(2208085J28).
Scatter-hoarding rodents play important roles in plant regeneration and species coexistence in many forest ecosys-tems.Cache pilferage,the behavior of rodents seeking or relocating seeds cached by other individuals,is...
关键词：cache pilferage canopy openness scatter-hoarding rodent seed dispersal seed survival 
Development of a Shoelace Tensile Testing System and Investigation into the Effects of Different Running Speeds on Shoelace Tensile Variation
《Journal of Bionic Engineering》2025年第1期214-225,共12页Shutao Wei Xinyu Guo Shaocong Zhao Biao Yan Lingjun Li Jiahao Pan Li Li 
This study investigated the validity and sensitivity of a custom-made shoelace tensile testing system.The aim was to analyze the distribution pattern of shoelace tension in different positions and under different tigh...
关键词：Force sensor Shoelace Tensile stress Upright stance Running shoes 
A new search for the variation of fundamental constants using the rovibrational levels and isotope effects of the magnesium fluoride molecule
《Chinese Physics B》2025年第2期215-221,共7页Di Wu Jin Wei Taojing Dong Chenyu Zu Yong Xia Jianping Yin 
Project supported by the National Natural Science Foundation of China (Grant Nos. 12174115,11834003,and 91836103)。
The recently demonstrated methods for cooling and trapping diatomic molecules offer new possibilities for precision searches in fundamental physical theories.Here,we propose to study the variations of the fine-structu...
关键词：cold molecule proton-to-electron mass ratio precision measurement 
Analysis on the synergistic variation of soil freezing and pile foundation bearing capacity in permafrost regions被引量：1
《International Journal of Transportation Science and Technology》2024年第4期134-149,共16页Dezhong Yu Yang Cao Qianqian Zhao 
funded by Zhejiang Shuren University Talent Startup Fund(No.2022R014);Zhejiang Shuren University Basic Scientific Research Special Funds(No.2023XZ014).
The construction of bored piles in permafrost regions disturbs the thermal stability of frozen soil,leading to decreased early bearing capacity of the pile foundation.As the permafrost ground temperature influences th...
关键词：Bridge engineering PERMAFROST Self-balancing Bearing capacity of pile foundation Finite analysis 
Stability analysis of reef fish communities based on symbiotic graph model
《Aquaculture and Fisheries》2024年第6期1007-1017,共11页Danfeng Zhao Yaru Lou Wei Song Dongmei Huang Xiaoliang Wang 
supported by the National Natural Science Foundation of China[No.42106190];the Science and Technology Commission of Shanghai Municipality Capacity Building Plan for Some Regional Universities and Colleges[No.20050501900].
The community stability of coral reefs and fish is the focus of ecological monitoring of coral reefs.Among them,the realization of effective metrics of variations in reef fish communities(i.e.,the combined communities...
关键词：Reef fish community Community stability Community variation Symbiotic graph model Graph kernel Conservation area 
Variation of parental and chick diet in opportunistic insectivorous European Bee-eaters
《Avian Research》2024年第4期473-481,共9页Joana S.Costa Steffen Hahn José A.Alves 
funded by FCT with grants to JSC(SFRH/BD/113580/2015);JAA(SFRH/BPD/91527/2012);also benefited from financial support to CESAM(UIDP/50017/2020+UIDB/50017/2020+LA/P/0094/2020);through national funds(FCT/MCTES).
Insectivorous Palaearctic bird species associated with open habitats rely on high prey abundances,which are currently declining due to habitat loss and intensive agricultural practices.The European Bee-eater(Merops ap...
关键词：Feeding ecology Habitat variation Merops apiaster Prey availability Prey selection 
Mechanisms for the evolution of cell-to-cell variations and their impacts on fast-charging performance within a lithium-ion battery pack
《Journal of Energy Chemistry》2024年第12期11-22,共12页Yufang Lu Xiaoru Chen Xuebing Han Dongxu Guo Yu Wang Xuning Feng Minggao Ouyang 
supported by the National Natural Science Foundation of China under No. 52177217;the Postdoctoral Innovative Talents Support Program under No. BX20240232。
Cell-to-cell variations(CtCV) compromise the electrochemical performance of battery packs, yet the evolutional mechanism and quantitative impacts of CtCV on the pack's fast-charging performance remain unexplored. This...
关键词：Lithium-ion battery Battery pack Cell-to-cell variation Fast charging Performance evaluation 
Oxygen variation in titanium powder and metal injection molding
《International Journal of Minerals,Metallurgy and Materials》2024年第12期2706-2713,共8页Junping Shen Chang Liu Muhammad Dilawer Hayat Jianan Chen Hanqing Tian Fusheng Xin Gang Chen Fei Yang Mingli Qin Xuanhui Qu 
financially supported by the National Key Research and Development Program of China(No.2021 YFB3701900);the National Natural Science Foundation Program of China(No.51971036);the Open Research Fund of State Key Laboratory of Mesoscience and Engineering(No.MESO-23-D07).
The control of oxygen is paramount in achieving high-performance titanium(Ti)parts by powder metallurgy such as metal in-jection molding(MIM).In this study,we purposely selected the Ti and Ti-6Al-4V powders as the ref...
关键词：titanium alloys OXYGEN metal injection molding powder metallurgy 
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