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Multi-regional input-output analysis for China＇s regional CH4 emissions

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Frontiers of Earth Science 2014年第1期8卷 163-180页

作者： Bo zhang Jiashuo LI Beihua peng Center for Resource and Environmental Policy Research School of Management China University of Mining & Technology (Beijing) Beijing 100083 China State Key Laboratory of Coal Resources and Safe Mining China University of Mining & Technology (Beijing) Beijing 100083 China College of Engineering Peking University Beijing 100871 China China Shenhua Overseas Development and Investment Company Ltd. Beijing 100011 China

China is the largest CH4 emitter in the world. Given the importance of CH4 in greenhouse gas emission inventories, the characteristics ofChina＇s CH4 emissions at different scales deserve to be fully understood. Presented in this paper is an interprovincial input output embodi- ment analysis of China＇s regional CH4 emissions in 2007, based on the most recently available multi-regional input- output table, and relevant CH4 emissions data. The results show that the eastern, central and western areas contribute to 48.2%, 28.6%, and 23.3% of the national total embodied emissions, respectively. Guangdong has the highest level of embodied CH4 emissions among all of the 30 regions. The Agriculture sector produces the most embodied CH4 emissions in final demand, followed by the Construction, Food Production and Tobacco Processing, and Other Service Activities sectors. Significant net transfers of embodied CH4 emission flows are identified from the central and western areas to the eastern area via interregional trade. Shanxi is the largest interregional exporter of embodied CH4 emissions. In contrast, Guangdong is the largest interregional importer. Energy activities, agricultural activities, and waste management comprise 65.6%, 30.7%, and 3.7% of the total embodied CH4 emissions in interregional trade, respectively. By using consumption-based accounting principles, the emis- sion magnitudes, per capita emissions, and emission intensities of most eastern regions increase remarkably, while those of some central and western regions decrease largely. To achieve regional CH4 emission mitigation, comprehensive mitigation measures should be designed under consideration of regional transfer of emission responsibility.

关键词： China's CH4 emissions multi-regional input-output analysis consumption-based emission accounting

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双酚类化合物的生物代谢机理研究进展

环境化学 2024年第3期43卷 711-721页

作者：赫淑铭潘文筱刘娴傅建捷张爱茜江桂斌国科大杭州高等研究院环境学院杭州310024 中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室北京100085 中国科学院大学资源与环境学院北京100049

以双酚A(bisphenol A,简称BPA)及其替代物为代表的双酚类化合物(bisphenols,简称BPs)在各种环境介质、食品、消费品以及人类和动物体中被广泛检出,表明BPs存在全球性大规模污染趋势.除了BPs自身毒性外,其在生物体内的转化代谢产物可能... 详细信息

以双酚A(bisphenol A,简称BPA)及其替代物为代表的双酚类化合物(bisphenols,简称BPs)在各种环境介质、食品、消费品以及人类和动物体中被广泛检出,表明BPs存在全球性大规模污染趋势.除了BPs自身毒性外,其在生物体内的转化代谢产物可能具有比母体化合物更复杂的内分泌干扰效应和毒性效应,对于人体生命健康的影响不容小觑.本文就BPs生物代谢的实验和理论计算研究方法及其取得的研究成果等方面进行回顾总结,在分析现有研究存在的问题和不足上对未来的研究重点提出了展望.

关键词：双酚类化合物代谢转化实验研究理论计算化学研究

TA2/Q235B复合板不同作用面成形极限及界面损伤行为

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Transactions of Nonferrous Metals Society of China 2024年第7期34卷 2181-2191页

作者：张志雄张斯沫班晓磊赵雪霞任忠凯韩建超张长江林鹏王涛王天翔太原理工大学机械与运载工程学院太原030024 太原理工大学金属成形技术与重型装备全国重点实验室太原030024 太原理工大学先进金属复合材料成形技术与装备教育部工程研究中心太原030024 太原理工大学材料科学与工程学院太原030024 山西太钢不锈钢精密带钢有限公司太原030006

采用Nakazima实验法对不同尺寸的退火态TA2/Q235B复合板样品进行胀形实验,研究不同作用面对TA2/Q235B复合板的成形极限和界面损伤行为的影响。结果表明,当凹模与碳钢侧接触时,由于接触材料、界面变形协调能力和应变状态的不同,复合板的... 详细信息

采用Nakazima实验法对不同尺寸的退火态TA2/Q235B复合板样品进行胀形实验,研究不同作用面对TA2/Q235B复合板的成形极限和界面损伤行为的影响。结果表明,当凹模与碳钢侧接触时,由于接触材料、界面变形协调能力和应变状态的不同,复合板的胀形高度和成形极限增加,其中R140试样的极限拱高达到最大值(46.17 mm),R60和R180试样在3个方向上的厚度减薄量和界面裂纹更大。此外,由于硬度和拉应力不同,两组样品中所有的水平和斜向孔都向纯钛侧延伸。

关键词： TA2/Q235B复合板胀形行为成形极限作用面界面损伤行为

Wnt/β-catenin/VEGF通路在副猪嗜血杆菌引起猪内皮细胞损伤中的作用

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华中农业大学学报 2024年第5期43卷 186-192页

作者：滑坷鑫彭宇娜孙煜张俐文张四化万云金卉华中农业大学动物科学技术学院、动物医学院武汉430070 武汉市动物疫病预防控制中心武汉430016

为探究副猪嗜血杆菌(Haemophilus parasuis,HPS)引起猪渗出性炎症的过程中血管内皮屏障的变化情况,以HPS感染原代猪血管内皮细胞,通过Western blot和荧光定量PCR检测HPS对Wnt/β-catenin通路及其下游靶基因表达的影响,并通过间接免疫荧... 详细信息

为探究副猪嗜血杆菌(Haemophilus parasuis,HPS)引起猪渗出性炎症的过程中血管内皮屏障的变化情况,以HPS感染原代猪血管内皮细胞,通过Western blot和荧光定量PCR检测HPS对Wnt/β-catenin通路及其下游靶基因表达的影响,并通过间接免疫荧光和跨内皮电阻测定检测细胞间黏附连接结构的改变。结果显示:HPS感染激活猪内皮细胞中的Wnt/β-catenin信号通路,促使胞质中的β-catenin蛋白发生核转位,导致胞膜处由β-catenin和血管内皮钙黏蛋白(VE-cadherin)构成的黏附连接结构被破坏,细胞通透性增加。抑制Wnt/β-catenin通路下游血管内皮生长因子(VEGF)基因的表达,可以明显抑制β-catenin的核转位,显著恢复内皮细胞间β-catenin和VE-cadherin构成的黏附连接结构,恢复内皮细胞通透性。以上研究结果表明,HPS通过激活猪内皮细胞中Wnt/β-catenin通路,破坏细胞间黏附连接,增加内皮细胞通透性;同时,Wnt/β-catenin通路下游VEGF基因通过正反馈调节效应放大了HPS感染引起的Wnt/β-catenin信号通路的激活效应和细胞结构的损伤。

关键词：副猪嗜血杆菌 Wnt/β-catenin信号通路血管内皮生长因子黏附连接细胞通透性

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基于温度循环加速退化试验的光纤连接器寿命评估

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环境技术 2024年第2期42卷 146-153页

作者：张楠冯业为李鹏张泽明张雯中国科学院空间应用工程与技术中心北京100094 中国科学院大学北京100049 香港城市大学先进设计与系统工程学系中国香港999077

针对光纤连接器在温度交替变化下寿命评估难的问题,提出一种基于修正Coffin-Manson模型的寿命评估方法。首先,分析了光纤连接器失效模式、机理。接着,开展光纤连接器多个加速应力水平下的温度循环加速退化试验,基于插入损耗加速退化数... 详细信息

针对光纤连接器在温度交替变化下寿命评估难的问题,提出一种基于修正Coffin-Manson模型的寿命评估方法。首先,分析了光纤连接器失效模式、机理。接着,开展光纤连接器多个加速应力水平下的温度循环加速退化试验,基于插入损耗加速退化数据建立幂函数退化轨迹模型。然后,结合插入损耗的失效阈值,通过假设检验推导不同加速应力水平下光纤连接器的伪失效寿命。最后,引入修正Coffin-Manson加速模型,进而外推空间环境下光纤连接器寿命。本方法评估的某光纤连接器在实际应力水平下的寿命与实际寿命比较接近,验证了修正Coffin-Manson模型方法对光纤连接器寿命评估的有效性和可行性。

关键词：光纤连接器寿命修正Coffin-Manson模型温度循环试验加速退化试验

Accounting for Polychromatic Light in Virtual Shack-Hartmann Wavefront Sensing

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Photonic Sensors 2023年第3期13卷 8-22页

作者： xian YUE Yaliang YANG Hao DAI Shen CHEN Chao GENG Yudong zhang Key Laboratory of Adaptive Optics Chinese Academy of SciencesChengdu 610209China Institute of Optics and Electronics Chinese Academy of SciencesChengdu 610209China University of Chinese Academy of Sciences Beijing 100049China

Virtual Shack-Hartmann wavefront sensing(vSHWS)has some significant advantages and is promising for aberration measurement in the field of biomedical optical *** illumination sources used in vSHWS are almost broadband,but are treated as monochromatic sources(only using center wavelength)in current data processing,which may cause *** work proposed a data processing method to take into account the multiple wavelengths of the broadband spectrum,named multiple-wavelength centroid-weighting *** feasibility was demonstrated through a series of simulations.A wavefront generated with a set of statistical human ocular aberrations was used as the target wavefront to evaluate the performance of the proposed and current *** results showed that their performance was very close when used for the symmetrical,but the wavefront error of the proposed method was much smaller than that of the current method when used for the asymmetrical spectrum,especially for the broader *** results were also validated by using 20 sets of clinical human ocular aberrations including normal and diseased *** proposed method and the obtained conclusions have important implications for the application of vSHWS.

关键词： Wavefront sensing aberration measurement numerical wavefront processing Shack-Hartmann wavefront sensing broadband spectral source

标准视域下高职学前教育专业人才培养方案的融合路径--以《学前教育专业认证标准》与《学前教育专业教学标准》为例

维普期刊数据库评论

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绵阳师范学院学报 2024年第4期43卷 56-64页

作者：杨达朱娅何为张鹏四川幼儿师范高等专科学校四川绵阳621000

《学前教育专业认证标准》与《学前教育专业教学标准》是深化高等职业院校学前教育专业人才培养方案改革的重要依据,将二者落实于人才培养具体措施中是新时代学前教育专业建设的内在诉求,为充分把握专业认证标准与专业教学标准的内涵,... 详细信息

《学前教育专业认证标准》与《学前教育专业教学标准》是深化高等职业院校学前教育专业人才培养方案改革的重要依据,将二者落实于人才培养具体措施中是新时代学前教育专业建设的内在诉求,为充分把握专业认证标准与专业教学标准的内涵,优化人才培养方案,促进高等职业院校学前教育专业“内涵发展、质量提升”,需要通过构建专业建设指导与融合平台、建立教师专业发展中心平台以及依据标准重构人才培养方案,协同推动学前教育专业质量提升。

关键词：标准高等职业院校学前教育专业人才培养方案融合路径

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高地应力下深部硐室底鼓破坏围岩稳定性分析

防灾减灾工程学报 2024年第3期44卷 660-669页

作者：张道兵尹华东胡阿平朱远嫘彭学军张升安方信湖南科技大学资源环境与安全工程学院湖南湘潭411201 中铁五局集团第一工程有限责任公司湖南长沙410117

为研究西部山区高地应力作用下深部硐室的稳定性问题,根据普氏压力拱理论,综合考虑深部硐室冒顶,片帮以及底鼓破坏,建立了高地应力下深部硐室底鼓破坏模式,基于极限分析上限法和非线性Hoek-Brown破坏准则,推导了该破坏模式下深部硐室的... 详细信息

为研究西部山区高地应力作用下深部硐室的稳定性问题,根据普氏压力拱理论,综合考虑深部硐室冒顶,片帮以及底鼓破坏,建立了高地应力下深部硐室底鼓破坏模式,基于极限分析上限法和非线性Hoek-Brown破坏准则,推导了该破坏模式下深部硐室的围岩压力理论公式,求解了该破坏模式下深部硐室围岩压力上限解,并将本文结果与数值模拟和已有成果进行对比分析。此外,通过该破坏模式研究了各参数对围岩压力和潜在破坏面的影响。结果表明:(1)随着初始地应力场参数中σ_(V)和λ增大,深部地下硐室围岩压力q逐渐增大,硐室围岩潜在破坏面逐渐增大,其中σ_(V)表现尤为显著;(2) Hoek-Brown破坏准则参数中GSI、σ_(ci)和m_(i)的增大对深部硐室围岩稳定性有明显的提高效应,而D增加则会降低硐室围岩的稳定性;(3)随着底部压力相关系数μ增加,深部地下硐室顶板和两帮的围岩压力表现为减小的趋势。研究成果可为深部硐室的支护设计提拱有效的理论支撑。

关键词：高地应力硐室底鼓破坏模式围岩压力 Hoek-Brown破坏准则

This work was supported by the European Research Council Advanced Grant(ETAP-742985 to *** J.F.)and by the Ministry of Science and Technology(grant 110-2636-B-005-001 to K.-J.L.).

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Plant Communications 2024年第1期5卷 130-147页

作者： Yu zhang Yuan Fu Wenfei xian Xiuli Li Yong Feng Fengjiao Bu Yan Shi Shiyu Chen Robin van Velzen Kai Battenberg Alison M.Berry Marco G.Salgado Hui Liu Tingshuang Yi Pascale Fournier Nicole Alloisio Petar Pujic Hasna Boubakri M.Eric Schranz Pierre-Marc Delaux Gane Ka-Shu Wong Valerie Hocher Sergio Svistoonoff Hassen Gherbi Ertao Wang Wouter Kohlen Luis G.Wall Martin Parniske Katharina Pawlowski Philippe Normand Jeffrey J.Doyle Shifeng Cheng Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518124China Biosystematics Group Department of Plant SciencesWageningen University6708PB Wageningenthe Netherlands Department of Plant Sciences University of CaliforniaDavisDavisCA 95616USA Department of Ecology Environment and Plant SciencesStockholm University10691 StockholmSweden Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesLanhei RoadKunming 650201China Universite´de Lyon Universite´Lyon 1CNRSUMR5557Ecologie MicrobienneINRAUMR 141843 bd du 11 novembre 191869622 VilleurbanneFrance Laboratoire de Recherche en Sciences Ve´ge´tales(LRSV) Universite´de ToulouseCNRSUPS24 chemin de Borde RougeAuzevilleBP4261731326 Castanet TolosanFrance Department of Biological Sciences University of AlbertaEdmontonAB T6G 2E9Canada French National Research Institute for Sustainable Development(IRD) UMR LSTM(IRD/CIRAD/INRAe/Montpellier University/Supagro)-Campus International BaillarguetTA A-82/J34398 Montpellier Cedex 5France National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologySIBSChinese Academy of SciencesShanghaiChina Laboratory of Molecular Biology Department of Plant SciencesWageningen University6708PB Wageningenthe Netherlands Laboratory of Biochemistry Microbiology and Soil Biological InteractionsDepartment of Science and TechnologyNational University of QuilmesCONICETBernalArgentina Faculty of Biology GeneticsLMU MunichGroßhaderner Strasse 2-482152 MartinsriedGermany School of Integrative Plant Science Sections of Plant Biology and Plant Breeding&GeneticsCornell UniversityIthacaNY 14853USA State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China Univer

Plant root-nodule symbiosis(RNS)with mutualistic nitrogen-fixing bacteria is restricted to a single clade of angiosperms,the Nitrogen-Fixing Nodulation Clade(NFNC),and is best understood in the legume *** species share many commonalities,explained either by divergence from a common ancestor over 100 million years ago or by convergence following independent origins over that same time ***,comparative analyses of diverse nodulation syndromes can provide insights into constraints on nodulation—what must be acquired or cannot be lost for a functional symbiosis—and the latitude for Plant Communications Genomic landscape of nodulation variation in the ***,much remains to be learned about nodulation,especially outside of ***,we employed a large-scale phylogenomic analysis across 88 species,complemented by 151 RNA-seq libraries,to elucidate the evolution of *** phylogenomic analyses further emphasize the uniqueness of the transcription factor NIN as a master regulator of nodulation and identify key muta-tions that affect its function across the *** transcriptomic assessment revealed nodule-specific upregulated genes across diverse nodulating plants,while also identifying nodule-specific and nitrogen-response *** 70%of symbiosis-related genes are highly conserved in the four representative species,whereas defense-related and host-range restriction genes tend to be lineage *** study also identified over 900000 conserved non-coding elements(CNEs),over 300000 of which are unique to sampled NFNC ***-specific CNEs are enriched with the active H3K9ac mark and are correlated with accessible chromatin regions,thus representing a pool of candidate regula-tory elements for genes involved in ***,our results provide novel insights into the evolution of nodulation and lay a foundation for engineering of RNS traits in agriculturally important crops.

关键词： nitrogen-fixing root-nodule symbiosis two competing hypotheses phylogenomics phylotranscrip-tomics conserved non-coding elements convergence deep homology