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Unveiling the roles of interspecific competition and local adaptation in phenotypic differentiation of parapatric frogs

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Current Zoology 2020年第4期66卷 383-392页

作者： Yan Huang Xiaoyi Wang Xin Yang Jianping Jiang Junhua Hua CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education) China West Normal UniversityNanchong 637009China

Understanding how ecological processes affect phenotypic evolution has been and continues to be an important goal of ecology and evolutionary biology. Interspecific competition for resources can be a selective force driving phenotypic differentiation that reduces competition among sympatric species (character divergence), enabling closely-related species to coexist. However, although patterns of character divergence are well documented in both empirical and theoretical researches, how local adaptation to abiotic environment affects trait evolution in the face of interspecific competition is less known. Here, we investigate how patterns in morphological traits of 2 parapatric frog species, Feirana quadranus and F. taihangnica, vary among allopatric and sympatric regions using range-wide data derived from extensive field surveys. Feirana quadranus was overall larger than F. taihangnica in body size (i.e., snout-vent length [SVL]), and the difference between SVL of both species in sympatry was larger than that in allopatry. From allopatry to sympatry, the 2 species diverged in foot and hand traits, but converged in eye size and interorbital span, even when we controlled for the effects of geographic gradients. Sympatric divergence in SVL, hand and foot traits is likely acting as a case of evolutionary shift caused by interspecific competition. In contrast, sympatric convergence of eye-related traits may derive at least partly from adaptation to local environments. These results imply the relative roles of interspecific competition and local adaptation in shaping phenotypic diversification. Our findings illustrate how traits evolve in parapatric species pair due to sympatric divergent and convergent evolution. It thus provides insights into understanding underlying evolutionary processes of parapatric species, that is, competition and local adaptation.

关键词： adaptive evolution character convergence character displacement Feirana functional traits resource competition

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Global convergence in terrestrial gross primary production response to atmospheric vapor pressure deficit

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Science China Life Sciences 2024年

作者： Chao Huang Jingfeng Huang Jingfeng Xiao Xing Li Hong S.He Yu Liang Fusheng Chen Hanqin Tian Research Institute of Agriculture and Life Sciences Seoul National University Key Laboratory of National Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed College of Forestry Jiangxi Agricultural University Earth Systems Research Center Institute for the Study of Earth Oceans and Space University of New HampshireDurham CAS Key Laboratory of Forest Ecology and Management Institute of Applied Ecology Chinese Academy of Sciences School of Natural Resources University of Missouri 203 ABNR BuildingColumbia Schiller Institute for Integrated Science and Society Department of Earth and Environmental Sciences Boston College Key Laboratory of Agricultural Remote Sensing and Information Systems Zhejiang Province Zhejiang University Institute of Applied Remote Sensing & Information Technology College of Environmental and Resource Sciences Zhejiang University

Atmospheric vapor pressure deficit(VPD) increases with climate warming and may limit plant growth. However, gross primary production(GPP) responses to VPD remain a mystery, offering a significant source of uncertainty in the estimation of global terrestrial ecosystems carbon dynamics. In this study, in-situ measurements, satellite-derived data, and Earth System Models(ESMs) simulations were analysed to show that the GPP of most ecosystems has a similar threshold in response to VPD: first increasing and then declining. When VPD exceeds these thresholds, atmospheric drought stress reduces soil moisture and stomatal conductance, thereby decreasing the productivity of terrestrial ecosystems. Current ESMs underscore CO2fertilization effects but predict significant GPP decline in low-latitude ecosystems when VPD exceeds the thresholds. These results emphasize the impacts of climate warming on VPD and propose limitations to future ecosystems productivity caused by increased atmospheric water demand. Incorporating VPD, soil moisture, and canopy conductance interactions into ESMs enhances the prediction of terrestrial ecosystem responses to climate change.

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Dual-filler reinforced PVDF-HFP based polymer electrolyte enabling high-safety design of lithium metal batteries

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Nano Research 2024年第6期17卷 5251-5260页

作者： Chang Fang Kangsheng Huang Jing Zhao Shiqi Tian Hui Dou Xiaogang Zhang Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016China

Despite the high energy density of lithium metal batteries(LMBs),their application in rechargeable batteries is still hampered due to insufficient safety.Here,we present a novel flame-retardant solid-state electrolyte based on polyvinylidene fluoride-hexafluoropropylene(PVDF-HFP)with nano SiO_(2)aerogel as an inert filler but Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(LLZTO)as an auxiliary component to enhance the ion conductivity.The introduction of SiO_(2)aerogels imparts the polymer electrolyte with exceptional thermal stability and flame retardancy.Simultaneously,the interaction between hydroxyl groups of SiO_(2)particles and PVDF-HFP creates a strong cross-linking structure,enhancing the mechanical strength and stability of the electrolyte.Furthermore,the presence of SiO_(2)aerogel and LLZTO facilitates the dissociation of lithium salts through Lewis acid-base interactions,resulting in a high ionic conductivity of 1.01×10^(−3)S·cm^(−1)and a wide electrochemical window of~5.0 V at room temperature for the prepared electrolytes.Remarkably,the assembled Li|Li cell demonstrates the excellent resistance to lithium dendrite and runs stablly for over 1500 h at a current density of 0.25 mA·cm^(−2).Thus,we prepare a pouch cell with high safety,which can work normally after short-circuiting under the external folding and cutting.

关键词： polymer electrolyte SiO_(2)/Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(LLZTO)dual-filler non-flammable long cycle life lithium metal battery

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Harmonic reducer in-situ fault diagnosis for industrial robots based on deep learning

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Science China(Technological Sciences) 2022年第9期65卷 2116-2126页

作者： ZHOU Xing ZHOU HuiCheng HE YiMing Huang ShiFeng ZHU ZhiHong CHEN JiHong School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China Foshan Institute of Intelligent Equipment Technology Foshan 528234China

The harmonic reducer is an essential kinetic transmission component in the industrial robots.It is easy to be fatigued and resulted in physical malfunction after a long period of operation.Therefore,an accurate in-situ fault diagnosis for the harmonic reducers in an industrial robot is especially important.This paper proposes a fault diagnosis method based on deep learning for the harmonic reducer of industrial robots via consecutive time-domain vibration signals.Considering the sampling signals from industrial robots are long,narrow,and channel-independent,this method combined a 1-dimensional convolutional neural network with matrix kernels(1-D MCNN)adaptive model.By adjusting the size of the convolution kernels,it can concentrate on the contextual feature extraction of consecutive time-domain data while retaining the ability to process the multi-channel fusion data.The proposed method is examined on a physical industrial robot platform,which has achieved a prediction accuracy of99%.Its performance is appeared to be superior in comparison to the traditional 2-dimensional CNN,deep sparse automatic encoding network(DSAE),multilayer perceptual network(MLP),and support vector machine(SVM).

关键词： harmonic reducer industrial robots fault diagnosis convolutional neural network(CNN)

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中国共产党小康社会建设思想的发展进路、标识范畴及拓新价值

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马克思主义研究 2022年第6期 19-31,155页

作者：黄蓉生西南大学马克思主义理论研究中心重庆400715

小康社会思想源远流长,集中表达了中华民族自古以来对美好生活的向往追求。百年来中国共产党根据人民意愿和事业发展的需要,吸收中华优秀传统文化,总结社会主义建设经验,创造性地提出小康社会建设思想,阐明了小康社会建设的理念、本质... 详细信息

小康社会思想源远流长,集中表达了中华民族自古以来对美好生活的向往追求。百年来中国共产党根据人民意愿和事业发展的需要,吸收中华优秀传统文化,总结社会主义建设经验,创造性地提出小康社会建设思想,阐明了小康社会建设的理念、本质、重点、方向、关键等标识范畴。党的小康社会建设思想引领中国人民在中华大地上全面建成小康社会,奠定全面建设社会主义现代化国家坚实基础,创造全球减贫治理的中国样本,拓展党的理论创新最新成果,很好地回答了“怎样建设”“如何建成”小康社会的根本问题。

关键词：中国共产党小康社会以人民为中心人的全面发展

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法藏敦煌P.2273西魏大统十四年释法鸾隶书写本文字与书法问题研究

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敦煌学辑刊 2022年第4期4卷 82-88页

作者：黄卫南京师范大学美术学院江苏南京210023

本文对法藏敦煌西魏大统十四年(548)释法鸾隶书写本P.2273的书法文字问题作了一些梳理与研究,认为释法鸾的署书具有类似印篆的独特性,四行题记不仅纪年明确,而且反映了当时的写经校对装潢合作机制,经文书体复杂,隶书、章草、楷书都有许... 详细信息

本文对法藏敦煌西魏大统十四年(548)释法鸾隶书写本P.2273的书法文字问题作了一些梳理与研究,认为释法鸾的署书具有类似印篆的独特性,四行题记不仅纪年明确,而且反映了当时的写经校对装潢合作机制,经文书体复杂,隶书、章草、楷书都有许多例字,整体应属“隶楷”或“楷隶”,俗字丰富,可供俗字典编撰采拾。

关键词： P.2273 《维摩诘义记》隶书署书俗字

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公共图书馆儿童读写服务研究——以江西省图书馆“读写成书”项目为例

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国家图书馆学刊 2022年第6期31卷 25-35页

作者：黄珣江西省图书馆

读写素养是时代所需,读写服务是公共图书馆提升儿童读写素养的重要服务举措。江西省图书馆“读写成书”项目围绕“阅读+写作”“培训+编辑”“‘出版’+馆藏”“展示+分享”四个环节,借助馆校合作、家馆合作、馆社合作而展开,其特色主... 详细信息

读写素养是时代所需,读写服务是公共图书馆提升儿童读写素养的重要服务举措。江西省图书馆“读写成书”项目围绕“阅读+写作”“培训+编辑”“‘出版’+馆藏”“展示+分享”四个环节,借助馆校合作、家馆合作、馆社合作而展开,其特色主要体现在馆校家多维度读写教育、读写并重拓展服务维度、关注数字读写创新模拟出版三个方面,对图书馆、学校和家庭均产生了重要意义。今后,该项目可以从多元化读写转化、精准化读写服务、智能化读写创作、情境化读写研学、社区式多方协同、多维度评价机制等方面予以优化,探讨公共图书馆在“阅读—写作—出版—展示—分享”这一路径下开展儿童读写服务的更多可能。图1。表1。参考文献46。

关键词：公共图书馆读写成书读写素养模拟出版

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高校法治教育一体化发展的内涵、要求与对策

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东北师大学报（哲学社会科学版） 2022年第4期 150-156页

作者：黄佳深圳职业技术学院马克思主义学院广东深圳518055

高校法治教育一体化发展的内涵向度主要体现为教育目标的贯穿性和教育内容的进阶性。高校法治教育的一体化发展要把握好总体目标与阶段目标的关系、处理好与前序课程在教育内容上的关联,并挖掘高校优势特色教育资源,进行方法创新。为回... 详细信息

高校法治教育一体化发展的内涵向度主要体现为教育目标的贯穿性和教育内容的进阶性。高校法治教育的一体化发展要把握好总体目标与阶段目标的关系、处理好与前序课程在教育内容上的关联,并挖掘高校优势特色教育资源,进行方法创新。为回应上述要求,在教育目标上,要以实现当代大学生对于社会主义法治道路的价值认同为核心;在教育内容上,要以正确把握教育对象为前提,并进行适度扩展;在教学方法上,要以学校思政课教学改革为契机,整合教育资源,进行教育教学模式和方法的创新。

关键词：高校法治教育一体化

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理解媒介的威力——重识媒介与历史

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探索与争鸣 2022年第1期 142-148,180页

作者：黄旦浙江大学数字沟通研究中心杭州310028 复旦大学信息与传播研究中心

媒介的本义是"居中",具有调和、组织、转化、生成的作用,由此形成其双重含义:具体的媒介;共有的媒介性--调节或交转。各个媒介的物质特性不同,调节的方式及所带来的形态也有所区别。由此,在媒介与历史的关系中,不能仅仅将媒介作为历史... 详细信息

媒介的本义是"居中",具有调和、组织、转化、生成的作用,由此形成其双重含义:具体的媒介;共有的媒介性--调节或交转。各个媒介的物质特性不同,调节的方式及所带来的形态也有所区别。由此,在媒介与历史的关系中,不能仅仅将媒介作为历史研究的对象,更重要的是考察历史的视角。媒介的变迁展示出人类社会的历史演变,由于媒介是构成人类生存的基本要素,一种新媒介的诞生就生成一种新的社会关系和文化形态,因而媒介史也就成为人类史。

关键词：媒介历史居中调节

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Mechanical properties and thermal deformation behavior of low-cost titanium matrix composites prepared by a structure-optimized Y_(2)O_(3) crucible

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Journal of Iron and Steel Research(International) 2024年第3期31卷 738-751页

作者： Qian Dang Gang Huang Ye Wang Chi Zhang Guo-huai Liu Zhao-dong Wang The State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819LiaoningChina School of Materials Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150004HeilongjiangChina School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870LiaoningChina

A porous yttrium oxide crucible with both thermal shock resistance and erosion resistance was developed by structural optimization.The structure-optimized yttrium oxide crucible was proved to be suitable for melting highly reactive titanium alloys.Low-cost(TiB+Y2O_(3))-reinforced titanium matrix composites were prepared by vacuum induction melting using the prepared crucible.The thermal deformation behavior and microstructure evolution of(TiB+Y2O_(3))-reinforced tita-nium matrix composites were investigated at deformation temperatures of 900-1100℃with strain rates of 0.001-1 s-1.The results showed that the prepared yttrium oxide crucible had both thermal shock and erosion resistance,the low-cost titanium matrix composites could be prepared by the developed yttrium oxide crucibles which were homogeneous in composition and highly sensitive to strain rate and deformation temperature,and the peak and theological stresses decreased with increasing deformation temperature or decreasing strain rate.In addition,the average thermal deformation activation energy of the composites was calculated to be 574.6 kJ/mol by establishing the Arrhenius constitutive equation in consideration of the strain variables,and the fitting goodness between the predicted stress value and the measured value was 97.624%.The calculated analysis of the hot processing map showed that the best stable thermal deformation zone was located in the deformation temperature range of 1000-1100℃and strain rate range of 0.001-0.01 s^(-1),where the peak dissipation coefficient wasη=71%.In this zone,the deformation of the reinforcement and matrix was harmonious,the reinforcement was less likely to fracture,dynamic recrystallization occurred more fully and the alloy exhibited near steady rheological characteristics.

关键词： Yttrium oxide crucible Titanium matrix composite Thermal deformation behavior Constitutive equation Hot processing map Microstructure evolution

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