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CCS Chemistry 2024年第6期6卷 1591-1599页

作者： Fulin zhou Haojie Dai Shan Tang yongfeng zhou Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory for Molecular Engineering of Chiral DrugsSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240

Aiming at accessing polyethylene-bearing in-chain degradable functionality,copolymerization of carbon dioxide(CO_(2))with ethylene has long been recognized as a significant but highly challenging ***,most trials have resulted in ethylene homopolymerization because of the endothermic property and high energy barriers of CO_(2)insertion during polymer chain *** we report an unprecedented tandem reaction protocol for the synthesis of polyethylenes with in-chain carbonyls from CO_(2)and ethylene by the combination of photocatalytic CO_(2)reduction and palladium-catalyzed coordination/insertion *** protocol provides an easy way to adjust the carbonyl content(from 0.13 to 12 mol%)and insertion selectivity(up to 99%isolated carbonyls)of the polyethylene copolymers,which enables the polymers tomaintain the main properties of highdensity polyethylene and simultaneously endows them with good *** addition,besides apolar polyethylene copolymers,polar-functionalized polyethylenes with in-chain isolated carbonyls can also be synthesized from CO_(2),ethylene and a polar monomer using the same *** believe our present work sheds new light on the synthesis of degradable polyethylenes by employing CO_(2)as a green carbonyl source.

关键词： carbon dioxide coordination polymerization polyethylene photoreduction photodegradation

Interfacial Reaction of Ti6Al4V Lattice Structure-Reinforced VW92 Alloy Matrix Composites

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Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 570-576页

作者： Haijun Wang Renju Cheng Xianhua Chen Mingbo Yang Daiyi Deng Lirui Liu yongfeng zhou Yanlong Ma Kaihong Zheng Fusheng Pan College of Materials Science and Engineering Chongqing University of TechnologyChongqing 400054China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China

A novel melting infiltration by ultrasonic vibration was investigated and applied to fabricate Ti6Al4V(TC4)lattice structure-reinforced Mg-10Gd-2Y-1Zn-xZr(refer to VW92 hereafter,x=0,0.5 wt%)alloy matrix *** edge-to-edge matching model indicates that the well-matching and possible orientation relationships(ORs)between theα-Mg andα-Ti,[10-10]_(α-Mg)//[11-23]_(α-Ti) in(0002)_(α-Mg)//(10-10)_(α-Ti) possesses the smallest misfit of 0.4%(f_(r)),and thus theα-Mg grains can nucleate on the TC4 lattice *** reaction occurred in the TC4/VW92+0.5 wt%Zr composites,and the reaction product was confirmed to be Al_(2)Zr_(3),AlZr_(2) andα-Ti(Zr)particles formed by continuous solution of *** the interfacial products,the AlZr_(2) phase is a brittle phase with high-volume fraction,which is not conducive to the load *** generally speaking,theα-Ti(Zr)and theα-Mg tend to form a coherent interface,which is beneficial for improving the interfacial bonding strength of composites.

关键词： TC4 VW92 composites TC4 lattice structure Interfacial reaction Mismatch

Population genomics highlights structural variations in local adaptation to saline coastal environments in woolly grape

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Journal of Integrative Plant Biology 2024年第7期66卷 1408-1426页

作者： Tianhao Zhang Wenjing Peng Hua Xiao Shuo Cao Zhuyifu Chen Xiangnian Su Yuanyuan Luo Zhongjie Liu Yanling Peng Xiping Yang Guo-Feng Jiang Xiaodong Xu Zhiyao Ma yongfeng zhou National Key Laboratory of Tropical Crop Breeding Shenzhen BranchGuangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources Guangxi UniversityNanning 530004China Guangxi Key Laboratory of Forest Ecology and Conservation Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest PlantationCollege of ForestryGuangxi UniversityNanning 530004China College of Informatics Huazhong Agricultural UniversityWuhan 430070China Guangxi Key Laboratory of Sugarcane Biology College of AgricultureGuangxi UniversityNanning 530004China Key Laboratory of Horticultural Plant Biology Ministry of Education Huazhong Agricultural UniversityWuhan 430070China Zhengzhou Fruit Research Institute Chinese Academy of Agricultural SciencesZhengzhou 450009China National Key Laboratory of Tropical Crop Breeding Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural SciencesHaikou 571101China

Structural variations(SVs)are a feature of plant genomes that has been largely unexplored despite their significant impact on plant phenotypic traits and local adaptation to abiotic and biotic *** this study,we employed woolly grape(Vitis retordii),a species native to the tropical and subtropical regions of East Asia with both coastal and inland habitats,as a valuable model for examining the impact of SVs on local *** assembled a haplotype-resolved chromosomal reference genome for woolly grape,and conducted population genetic analyses based on whole-genome sequencing(WGS)data from coastal and inland *** demographic analyses revealed recent bottlenecks in all populations and asymmetric gene flow from the inland to the coastal *** total,1,035 genes associated with plant adaptive regulation for salt stress,radiation,and environmental adaptation were detected underlying local selection by SVs and SNPs in the coastal population,of which 37.29% and 65.26% were detected by SVs and SNPs,*** genes such as FSD2,RGA1,and AAP8 associated with salt tolerance were found to be highly differentiated and selected during the process of local adaptation to coastal habitats in SV *** study highlights the importance of SVs in local adaptation;candidate genes related to salt stress and climatic adaptation to tropical and subtropical environments are important genomic resources for future breeding programs of grapevine and its rootstocks.

关键词： climate change grape breeding local adaptation with gene flow salt tolerance viticulture Vitis

贵州无井式UCG选址选层“四性”地质评价模式与资源类型划分

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煤炭学报 2024年第5期49卷 2414-2425页

作者：周泽易同生秦勇周永峰杨磊汪凌霞贵州省煤田地质局贵州贵阳550025 贵州优驰能源科技有限责任公司贵州贵阳550014 中国矿业大学江苏徐州221116 贵州省煤炭流态化开采重点实验室贵州贵阳550014

为建立科学系统的“地质−工程”一体化地质风险评估模式,解决煤炭地下气化(UCG)选址选层难题,提出了一种以“建炉可行性、过程易控性、气化安全性、开发经济性”四性认识为基础,利用FAHP模糊层次分析法创建的包括4项一级指标、10项2级... 详细信息

为建立科学系统的“地质−工程”一体化地质风险评估模式,解决煤炭地下气化(UCG)选址选层难题,提出了一种以“建炉可行性、过程易控性、气化安全性、开发经济性”四性认识为基础,利用FAHP模糊层次分析法创建的包括4项一级指标、10项2级指标、26项3级关键地质参数的地质评价要素层次结构模型。该模型引入“阈值”概念,对断层指数、奥亚膨胀度、黏结指数、上覆含水层距离4项指标的超“阈值”情况实施“一票否决”,充分重视特定地质参数对UCG控制的关键作用;通过“两两判断矩阵”确定各指标权重向量,根据隶属函数厘定指标层隶属度;并提出了相应地质评价技术方法,配套建立了权重积、综合权重积以及最优3段分割等算法,将所涉及指标量化分析,精准判断资源类型与级别;同时基于矩阵结构混合编码方式,提出了“四性四级”五位编码的UCG资源类型表征系统。最终形成了以“四性”理论为基础,“算法”为骨架,“四性四级”五位编码为灵魂的科学化、系统化UCG选址选层地质评价体系。该评价体系可在多场耦合的UCG生产过程相关风险识别机制的前沿探索方面发挥关键作用,有效改善现有UCG风险识别理论局限于地质单方面,缺乏工程联系的问题,实现大区域的UCG量化选址选层,为省级乃至国家级煤炭地下气化战略规划提供解决途径,从而提出可供分步实施的典型地质条件先导性试验区建议,推动煤炭地下气化产业化进程。

关键词：煤炭地下气化地质评价资源分类层次结构模型

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煤炭地下气化碳减排技术研究进展与未来探索

煤炭学报 2024年第1期49卷 495-512页

作者：秦勇易同生周永锋杨磊王军中国矿业大学江苏徐州221116 贵州省煤田地质局贵州贵阳550025

煤炭地下气化(UCG)与碳减排的相互融合,有望成为当前至碳中和到来之前过渡阶段的优秀绿色能源技术,甚至在未来更长的碳中和历史时期发挥重要作用。回顾研究历史与现状,UCG减排系统策略基本形成,可归纳为5种具体途径。其中,地下原位定向... 详细信息

煤炭地下气化(UCG)与碳减排的相互融合,有望成为当前至碳中和到来之前过渡阶段的优秀绿色能源技术,甚至在未来更长的碳中和历史时期发挥重要作用。回顾研究历史与现状,UCG减排系统策略基本形成,可归纳为5种具体途径。其中,地下原位定向调控可减少CO_(2)释放产出并促进UCG提质增产,相关策略和途径可归纳为“碳调减(CRR)”。UCG-CO_(2)地下空间超临界气态封存研究成果相对较多,主要集中在封存介质、封存空间、封存能力等方面,少数研究讨论了封存机制。UCG-CO_(2)地下空间矿化封存不受地质体稳定性和封闭性苛刻条件的约束,潜在着固碳和转化产气的双重效果,但研究成果尚不多见。UCG-CO_(2)回注利用与封存的前期探索集中在煤层气增产和UCG合成气生产改善2个方面,近年来开创了UCG制氢尾气CO_(2)减排利用系列性探索。CRR作为一种主动减排策略,通过调节气化剂及其注入方式来定向调减UCG合成气中CO_(2)浓度,理论成果较多并且经过现场初步验证,有望成为集清洁能源生产与碳减排为一体的洁净煤实用技术。评述进展并分析短板,UCG碳减排科学技术研究已取得诸多实质性成果,也面临持续发展的挑战,未来探索似应聚焦在4个方向:一是立足可行,优先发展以UCG-CRR为重点的UCG-CO_(2)地下转化利用技术;二是聚焦短板,着力突破UCG减排-合成气提质协同机理和关键技术瓶颈;三是扎实推进,优先启动实施UCG-CRR先导试验和工程示范,探索步步取得实效;四是保障实现,探索建立由碳中和与碳管理战略、专项科技行动计划、专业人才培养构成的“三位一体”UCG减排政策支撑体系。

关键词：煤炭地下气化碳减排碳调减策略体系探索方向

Evolutionary genomics of climatic adaptation and resilience to climate change in alfalfa

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Molecular Plant 2024年第6期17卷 867-883页

作者： Fan Zhang Ruicai Long Zhiyao Ma Hua Xiao Xiaodong Xu Zhongjie Liu Chunxue Wei Yiwen Wang Yanling Peng Xuanwen Yang Xiaoya Shi Shuo Cao Mingna Li Ming Xu Fei He Xueqian Jiang Tiejun Zhang Zhen Wang Xianran Li Long-Xi Yu Junmei Kang Zhiwu Zhang yongfeng zhou Qingchuan Yang Institute of Animal Science Chinese Academy of Agricultural SciencesBeijing 100193China National Key Laboratory of Tropical Crop Breeding Shenzhen BranchGuangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China School of Grassland Science Beijing Forestry UniversityBeijing 100083China Department of Agronomy and Horticulture University of Nebraska-LincolnLincolnNE 68583USA Department of Crop and Soil Sciences Washington State UniversityPullmanWA 99163USA U.S.Department of Agriculture-Agricultural Research Service Plant Germplasm Introduction and Testing ResearchProsserWA 99350USA National Key Laboratory of Tropical Crop Breeding Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural SciencesHaikou 571101China

Given the escalating impact of climate change on agriculture and food security,gaining insights into the evolutionary dynamics of climatic adaptation and uncovering climate-adapted variation can empower the breeding of climate-resilient crops to face future climate ***(Medicago sativa ***),the queen of forages,shows remarkable adaptability across diverse global environments,making it an excellent model for investigating species responses to climate *** this study,we performed population genomic analyses using genome resequencing data from 702 accessions of 24 Medicago species to unravel alfalfa’s climatic adaptation and genetic susceptibility to future climate *** found that interspecific genetic exchange has contributed to the gene pool of alfalfa,particularly enriching defense and stress-response *** introgression between *** ***(***)and alfalfa not only aids alfalfa’s climatic adaptation but also introduces genetic burden.A total of 1671 genes were associated with climatic adaptation,and 5.7%of them were introgressions from *** integrating climate-associated variants and climate data,we identified populations that are vulnerable to future climate change,particularly in higher latitudes of the Northern *** findings serve as a clarion call for targeted conservation initiatives and breeding *** also identified preadaptive populations that demonstrate heightened resilience to climate fluctuations,illuminating a pathway for future breeding ***,this study enhances our understanding about the local adaptation mechanisms of alfalfa and facilitates the breeding of climate-resilient alfalfa cultivars,contributing to effective agricultural strategies for facing future climate change.

关键词： Medicago local adaptation population genetics adaptive introgression genetic vulnerability alfalfa breeding

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煤炭地下气化的敏感性地质因素探讨

煤田地质与勘探 2024年第3期52卷 24-36页

作者：周泽易同生秦勇周永峰汪凌霞孔维敏贵州省煤田地质局贵州贵阳550025 贵州优驰能源科技有限责任公司贵州贵阳550014 贵州省煤炭流态化开采重点实验室贵州贵阳550014 中国矿业大学江苏徐州221116

相对于地面煤化工装置,煤炭地下气化(UCG)炉体为地质体,地质条件准确认识是推进UCG气化成功的关键前提。为了最大限度避免煤炭地下气化选区选址地质风险,以贵州复杂地质条件为例,系统探讨其煤炭地下气化的敏感性地质因素。通过收集梳理... 详细信息

相对于地面煤化工装置,煤炭地下气化(UCG)炉体为地质体,地质条件准确认识是推进UCG气化成功的关键前提。为了最大限度避免煤炭地下气化选区选址地质风险,以贵州复杂地质条件为例,系统探讨其煤炭地下气化的敏感性地质因素。通过收集梳理贵州煤炭资源勘查资料,建立归一化的参数分级赋值、参数权重向量算法、参数权重积算法等数学模型,准确获取研究区地质参数量化数据;基于由26个地质因素构成的地质参数集,采用数理统计方法,识别地质风险关键因素对复杂构造区煤层UCG可行性的交叉影响,查明建炉可行性、过程易控性、气化安全性、开发经济性“四性”指标敏感性地质风险源。结果表明:“四性”指标地质参数的敏感性有所差异,建炉可行性、过程易控性、气化安全性、开发经济性的地质因素敏感性依次变弱,UCG可行性对建炉可行性的依赖性最强,过程易控性次之,其他两个条件离散性相对较大,敏感性明显降低;就敏感性程度而言,26项地质参数中最为敏感的是煤的坚固性系数,其他8个主控地质因素分别是煤层厚度、煤层倾角、煤厚变异系数、夹矸厚度系数、断层指数、煤层埋深、奥亚膨胀度和黏结指数,影响建炉可行性、过程易控性两个方面。就贵州UCG敏感性地质因素来说,UCG项目成功与否的关键在于建炉可行性,气化炉选址应优先考虑构造发育特征及其对煤层条件的影响;为持续推进煤炭地下气化产业发展,下一步或可立足于我国煤炭资源特性及赋存条件实际,以“四性”认识为基础建立统一的UCG地质风险评价准则,进而为典型地质条件先导性试验区选址提供科学依据。

关键词：无井式煤炭地下气化敏感性因素地质因素主成分分析气化炉选址

One shot strategy for preparation of asymmetric molecular doublebrushes: a potential building platform for diverse polymers

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Science China Chemistry 2018年第2期61卷 141-142页

作者： yongfeng zhou School of Chemistry & Chemical Engineering State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University

Novel macromolecular architectures with well-defined compositions and structures are of particular interest and the synthesis and self-assembly of those polymers have been an important research topic in polymer scienc... 详细信息

关键词：聚合物不对称分子平台大楼射击体系结构

A centromere map based on super pan-genome highlights the structure and function of rice centromeres

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Journal of Integrative Plant Biology 2024年第2期66卷 196-207页

作者： Yang Lv Congcong Liu Xiaoxia Li Yueying Wang Huiying He Wenchuang He Wu Chen Longbo Yang Xiaofan Dai Xinglan Cao Xiaoman Yu Jiajia Liu Bin Zhang Hua Wei Hong Zhang Hongge Qian Chuanlin Shi Yue Leng Xiangpei Liu Mingliang Guo Xianmeng Wang Zhipeng Zhang Tianyi Wang Bintao Zhang Qiang Xu Yan Cui Qianqian Zhang Qiaoling Yuan Noushin Jahan Jie Ma Xiaoming Zheng yongfeng zhou Qian Qian Longbiao Guo Lianguang Shang State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Yazhouwan National Laboratory No.8 Huanjin RoadYazhou DistrictSanya City 572024China National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop ScienceChinese Academy of Agricultural SciencesBeijing 100081China

Rice(Oryza sativa)is a significant crop worldwide with a genome shaped by various evolutionary *** centromeres are crucial for chromosome segregation,and contain some unreported *** to the diverse and complex centromere region,a comprehensive understanding of rice centromere structure and function at the population level is *** constructed a high-quality centromere map based on the rice super pangenome consisting of a 251-accession panel comprising both cultivated and wild species of Asian and African *** showed that rice centromeres have diverse satellite repeat CentO,which vary across chromosomes and subpopulations,reflecting their distinct evolutionary *** also revealed that long terminal repeats(LTRs),especially young Gypsy-type LTRs,are abundant in the peripheral CentO-enriched regions and drive rice centromere expansion and ***,high-quality genome assembly and complete telomere-to-telomere(T2T)reference genome enable us to obtain more centromeric genome information despite mapping and cloning of centromere genes being *** investigated the association between structural variations and gene expression in the rice centromere.A centromere gene,OsMAB,which positively regulates rice tiller number,was further confirmed by expression quantitative trait loci,haplotype analysis and clustered regularly interspaced palindromic repeats(CRISPR)/CRISPR-associated protein9 *** revealing the new insights into the evolutionary patterns and biological roles of rice centromeres,our finding will facilitate future research on centromere biology and crop improvement.

关键词： centromere super pan-genome CentoO satellite repeat rice

Phase diagrams, mechanisms and unique characteristics of alternating-structured polymer self-assembly via simulations

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Science China Chemistry 2019年第2期62卷 226-237页

作者： Shanlong Li Chunyang Yu yongfeng zhou School of Chemistry & Chemical Engineering State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University

Alternating-structured polymers(ASPs), like alternating copolymers, regular multiblock copolymers and polycondensates, are very important polymer structures with broad applications in photoelectric materials. However, their self-assembly behaviors,especially the self-assembly of alternating copolymers, have not been clearly studied up to now. Meanwhile, the unique characteristics therein have not been systematically disclosed yet by both experiments and theories. Herein, we have performed a systematic simulation study on the self-assembly of ASPs with two coil alternating segments in solution through dissipative particle dynamics(DPD) simulations. Several morphological phase diagrams were constructed as functions of different impact parameters. Diverse self-assemblies were observed, including spherical micelles, micelle networks, worm-like micelles, disklike micelles, multimicelle aggregates, bicontinuous micelles, vesicles, nanotubes and channelized micelles. Furthermore, a morphological evolutionary roadmap for all these self-assemblies was constructed, along with which the detailed molecular packing models and self-assembly mechanisms for each aggregate were disclosed. The ASPs were found to adopt a folded-chain mechanism in the self-assemblies. Finally, the unique characteristics for the self-assembly of alternating copolymers were revealed especially, including(1) ultra-fine and uniform feature sizes of the aggregates;(2) independence of self-assembled structures from molecular weight and molecular weight distribution;(3) ultra-small unimolecular aggregates. We believe the current work is beneficial for understanding the self-assembly of alternating structured polymers in solution and can serve as a guide for the further experiments.

关键词： alternating-structured polymer self-assembly dissipative particle dynamics simulations phase diagram