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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1421-1440页

作者： Feiyu Yan Xin Chen Zhenzhen Wang Yuxuan Xia Dehui Zheng sirui xue Hongliang Zhao Zhiwei Huang Yuan Niu Guoliang Zhang School of Life Sciences and Food Engineering Huaiyin Institute of TechnologyHuai’an223003China Jianghuai Plain Crop Industry Engineering Research Institute Huaiyin Institute of TechnologyHuai’an223003China

Melatonin and abscisic acid,as major plant hormones,play important roles in the physiological and biochemical activities of crops,but the interaction between the two under salt stress is not yet *** study investigated the endogenous levels of melatonin and abscisic acid in rice by using exogenous melatonin,abscisic acid,and their synthetic inhibitors,and examined their interactions under salt *** research results indicate that melatonin and abscisic acid can improve rice salt *** alleviated the salt sensitivity caused by abscisic acid deﬁciency,increased antioxidant enzyme activity and antioxidant content in rice treated with abscisic acid synth-esis inhibitors,and reduced total reactive oxygen species content and thiobarbituric acid reactive substance *** also increased the activity of key photosynthetic enzymes and the content of photosynthetic pigments,maintaining the parameters of photosynthetic gas exchange and chlorophyllﬂ*** summary,melatonin alleviated the effects of abscisic acid deﬁciency on photosynthesis and antioxidant systems in rice and improved salt *** study is beneﬁcial for expanding the understanding of melatonin regulation of crop salt tolerance.

关键词： Melatonin abscisic acid salt stress rice photosynthesis antioxidant system

Resolving controversies surrounding carbon sinks from carbonate weathering

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Science China Earth Sciences 2024年第9期67卷 2705-2717页

作者： Xiaoyong BAI sirui ZHANG Pete SMITH Chaojun LI Lian XIONG Chaochao DU Yingying xue Zilin LI Mingkang LONG Minghui LI Xiaoyun ZHANG Shu YANG Qing LUO Xiaoqian SHEN State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China University of Chinese Academy of Sciences Beijing 100049China Institute of Biological and Environmental Sciences University of AberdeenAberdeen AB243UUUK College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China School of Geography and Environmental Sciences Guizhou Normal UniversityGuiyang 550025China CAS Center for Excellence in Quaternary Science and Global Change Xi’an 710061China

The importance of carbonate weathering carbon sinks(CCSs)is almost equal to that of vegetation photosynthesis in the global carbon ***,CCSs have become controversial in formulating carbon neutral policies to deal with global climate problems in various countries,since the carbonate dissolution is *** order to address these controversies,we reviewed recent advances in understanding CCSs and examined the outstanding controversies surrounding *** have analyzed the five controversies,revealing the existence of CCSs,quantifying their magnitude,clarifying their spatiotemporal pattern,and documenting how they have increased and how they evolved under the background of global *** addressing these five controversies,we help to bring clarity to the role of CCSs in the carbon cycle of global terrestrial ecosystems.

关键词： Carbon sink Carbonate weathering Carbon cycle Climate change Anthropogenic driver

Storage, form, and influencing factors of karst inorganic carbon in a carbonate area in China

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Science China Earth Sciences 2024年第3期67卷 725-739页

作者： Chaochao DU Xiaoyong BAI Yangbing LI Qiu TAN Cuiwei ZHAO Guangjie LUO Luhua WU Fei CHEN Chaojun LI Chen RAN sirui ZHANG Lian XIONG Fengjiao SONG Biqin XIAO Zilin LI Yingying xue Mingkang LONG Qing LUO Xiaoyun ZHANG Minghui LI Xiaoqian SHEN Shu YANG State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China School of Geography and Environmental Sciences Guizhou Normal UniversityGuiyang 550001China CAS Center for Excellence in Quaternary Science and Global Change Xi'an 710061China Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed Guizhou Normal CollegeGuiyang 550018China College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China

Carbonate rock chemical weathering carbon sinks reduce the rate of increase of the atmospheric CO_(2) concentration and global warming. However, uncertainty still exists in the estimation results of carbonate rock chemical weathering carbon sink fluxes(CCSF), and the contributions of climate change and ecological restoration to the CCSF are not clear. To this end, we compiled published site data on ion concentrations in different watersheds in China and used a classical thermodynamic dissolution model to reassess the potential and spatial and temporal patterns of the CCSF in China from 1991 to 2020. We quantified the contributions of temperature(MAT), precipitation(MAP), evapotranspiration(ET), soil water(SM), and the normalized difference vegetation index(NDVI) to the CCSF. The results revealed that(1) China's CCSF was 22.76 t CO_(2)km^(-2)yr^(-1), which was higher than the global average(15.77 t CO_(2)km^(-2)yr^(-1)). The total carbonate rock chemical weathering carbon sink(CCS) was 4772.67×10^(4)t CO_(2), contributing 14.91% of the global CCS through a carbonate rock area of 252.98×10^(4)km^(-2).(2) China's CCSF decreased gradually from southeast to northwest, with values of 33.14, 12.93, and7.27 t CO_(2)km^(-2)yr^(-1)in the southern karst, Qinghai-Tibetan karst, and northern karst regions, respectively.(3) The overall CCSF in China exhibited an increasing trend from 1991 to 2020, with a rate of increase of 0.16 t CO_(2)km^(-2)yr^(-1).(4) The contributions of the MAP, MAT, ET, SM, and NDVI to the CCSF were 63.3%, 3.02%, 27.5%, 3.1%, and 3.05%, respectively. Among them, the increase in precipitation was the main contributor to the increase in the CCSF in China over the last 30 years, while the enhancement of ET offset part of the positive contribution of the increase in precipitation to the CCSF. In conclusion, the results of this study provide a systematic quantification of the magnitude, the patterns, and the influencing factors of CCS over a long time series in

关键词： Carbonate rocks Carbon sinks Patterns Influencing factors Thermodynamic dissolution modeling

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2线水铁矿的晶胞与团簇模型

煤炭学报 2020年第4期45卷 1275-1281页

作者：薛思蕊武鹏吕毅军刘东赵学波吴萍萍李鹏周红星张宏玉中国石油大学(华东)化学工程学院山东青岛266580 北京低碳清洁能源研究院北京102209

费托合成是合成清洁能源的重要化学反应。2线水铁矿是目前公认的费托合成铁基催化剂的前躯体。由于2线水铁矿热力学稳定性差,因此结构模型的推导主要基于X射线衍射结果和透射电子显微镜。但目前还鲜有将实验与模拟相结合,研究2线水铁矿... 详细信息

费托合成是合成清洁能源的重要化学反应。2线水铁矿是目前公认的费托合成铁基催化剂的前躯体。由于2线水铁矿热力学稳定性差,因此结构模型的推导主要基于X射线衍射结果和透射电子显微镜。但目前还鲜有将实验与模拟相结合,研究2线水铁矿的纳米团簇的报道。本研究采用实验与模拟相结合的方法,其中,分子模拟采用Material Studio(简称MS)中的Dmol3模块和Forcite模块分别对2线水铁矿的晶胞与团簇模型进行结构优化;实验研究利用沉淀法合成铁基催化剂前驱体2线水铁矿样品,洗涤方法选择离心,干燥方式选择冷冻干燥;表征方法包括、X射线衍射分析和红外光谱分析。从实验制备的2线水铁矿的X射线衍射结果出发,并结合米歇尔等给出的晶胞模型参数,搭建了2线水铁矿的晶胞模型、直径为2.66 nm的2线水铁矿球形纳米团簇及边长为3.22 nm的2线水铁矿立方体纳米团簇模型。在对模型进行了结构最优化后,通过模拟的X射线衍射对比图验证了晶胞与团簇模型的合理性,即实验与模拟的衍射峰差别控制在1.0°以内。结果表明,通过不同泛函结构优化后得到的模型的X射线衍射图出峰位置分别为35.9°/62.7°(GGA/PBE)和35.8°/61.9°(m-GGA/M06-L)。比较实验值(35.1°/62.0°),2种计算结果的差值均在1.0°以内,且m-GGA/M06-L泛函计算结果更加接近实验值。对于两种纳米团簇模型,Fine精度计算得到的结果最准确,且两种不同形状的团簇模型均为最优模型。本研究强调了实验与模拟的紧密性,从实验结果出发,结合MS软件的X射线衍射模拟功能,成功搭建了合理的晶胞与团簇模型,对2线水铁矿结构的研究提供了依据。

关键词： 2线水铁矿制备催化剂分子模拟纳米结构

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热液成矿系统构造控矿理论

地学前缘 2024年第1期31卷 239-266页

作者：杨立强杨伟张良高雪申世龙王偲瑞徐瀚涛贾晓晨邓军中国地质大学(北京)地质过程与矿产资源国家重点实验室/深时数字地球前沿科学中心北京100083 山东省地质科学研究院自然资源部金矿成矿过程与资源利用重点实验室山东济南250013 山东黄金地质研究院山东济南250101 山东省地质矿产勘查开发局第六地质大队自然资源部深部金矿资源勘查与开采技术创新中心山东威海264209 西昌学院资源与环境学院四川西昌615000

构造对成矿的控制是热液成矿系统的典型特征之一,系统剖析多重尺度控矿构造的几何学、运动学、动力学、流变学和热力学对认识矿床成因和预测找矿至关重要;而如何实现控矿构造格架、渗透性结构、成矿流体通道和矿化变形网络由静态到多尺... 详细信息

构造对成矿的控制是热液成矿系统的典型特征之一,系统剖析多重尺度控矿构造的几何学、运动学、动力学、流变学和热力学对认识矿床成因和预测找矿至关重要;而如何实现控矿构造格架、渗透性结构、成矿流体通道和矿化变形网络由静态到多尺度时-空四维动态的转变,查明流体通道和矿床增量生长过程与控制因素,揭示热液成矿系统的构造-流体耦合成矿机制和定位规律是亟待解决的关键科学难题。为此,我们在对已有相关成果系统梳理的基础上,提出了科学构建热液成矿系统构造控矿理论的基本要点与对应方法及应用范畴:(1)流体而非构造是构造控矿理论的中心,热液系统的流体流动与成矿作用受控于断裂带格架及其渗透性结构,其中渗透率是将流体流动与流体压力变化联系起来理解控矿构造的核心;(2)不同控矿构造组合的关键控制是构造差应力和流体压力的大小,而矿化类型的变化可能是由于构造应力场引起的容矿构造方位的不同和赋矿围岩之间的强度差异所致;(3)流体通道的生长始于超压流体储库上游围岩中孤立的微裂隙沿流体压力梯度最大的方向、随裂隙发育且相互连结而形成新的长裂隙,并最终连通形成断裂网络内的流体通道,矿床的增量生长发生在高流体通量的短爆发期,断层反复滑动驱动其内流体压力、流速和应力快速变化,当由此诱发的流体通道生长破坏了流体系统的动态平衡时,随之而来的流体快速降压就成为金属沉淀成矿的关键驱动因素;(4)以热液裂隙-脉系统野外地质观测和构造-蚀变-矿化网络三维填图为基础,通过宏观与微观各级控矿构造相结合、地质历史与构造应力分析相结合、局部与区域点-线-面相结合、浅部与深部相结合、时间与空间相结合、定性和定量相结合,对各种控矿因素开展多学科、多尺度、多层次、全方位综合研究,是应遵循的基本原则;(5)通过构造-蚀变-矿化网络填图,将蚀变-矿化体与控矿构造的类型、形态、规模、产状和间距等几何学特征联系起来,利用热液裂隙-脉系统和断裂网络拓扑学及矿体三维几何结构分析等定量方法查明控矿构造格架和渗透性结构并揭示矿化变形网络的连通性与成矿潜力;(6)合理构建地质模型,选取合适的热力学参数和动力学边界条件,利用HCh和COMSOL等方法,定量模拟成矿过程中的流体流动、热-质传递、应力变形和化学反应等的时-空变化,是揭示构造-流体耦合成矿机理和定位规律、预测矿化中心和确定找矿目标的有效途径。进而提出了构造控矿理论的研究流程:聚焦构造-流体耦合成矿机制和定位规律这一关键科学问题,选择热液裂隙-脉系统和构造-蚀变-矿化网络为重点研究对象;通过几何学描述、运动学判断、流变学分析、动力学解析和热力学综合,厘定控矿构造格架,定位矿化中心,示踪成矿流体通道和多种矿化样式的增量生长过程及其关键控制,揭示渗透性结构的时-空演变规律及构造再活化与成矿定位的成因关联,建立构造-流体耦合成矿模式,服务新一轮战略找矿突破。以胶东焦家金矿田为例,开展控矿构造理论研究和成矿预测应用实践,证实了其科学性和有效性。

关键词：热液裂隙-脉系统构造-蚀变-矿化网络渗透性结构与成矿定位流体通道和矿床增量生长构造-流体耦合成矿模式

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中国西南喀斯特石漠化治理对生物多样性的影响

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地理学报 2024年第1期79卷 97-113页

作者：龙明康白晓永李姿霖薛盈盈陈飞李朝君冉晨张思蕊杜朝超宋丰姣肖碧琴熊练中国科学院地球化学研究所环境地球化学国家重点实验室贵阳550081 中国科学院大学北京100049 贵州大学资源与环境工程学院贵阳550025 重庆大学环境与生态学院重庆400044 贵州师范大学地理与环境科学学院贵阳550001 贵州省水利科学院贵阳550002

生态修复措施会对生物多样性热点区域产生强烈影响,因此量化石漠化治理对生物多样性的贡献在西南喀斯特地区是至关重要的。本文通过回归分析以及残差趋势分析等方法,揭示了2000—2020年中国西南喀斯特地区石漠化及生物多样性的时空演变... 详细信息

生态修复措施会对生物多样性热点区域产生强烈影响,因此量化石漠化治理对生物多样性的贡献在西南喀斯特地区是至关重要的。本文通过回归分析以及残差趋势分析等方法,揭示了2000—2020年中国西南喀斯特地区石漠化及生物多样性的时空演变规律,量化了石漠化治理等因素对生物多样性的贡献。结果表明:中国西南喀斯特地区石漠化以轻度石漠化和中度石漠化为主,石漠化总面积减少了10.25万km^(2),减少速率为0.49万km^(2)/a;喀斯特地区生物多样性总体呈增加趋势,生物多样性综合指数均值为0.40,总体维持在中等水平;石漠化治理和生物多样性呈正相关关系,其对生物多样性的贡献为26.39%;气候变化和人类活动对生物多样性的贡献分别为52.78%、47.22%。结果表明,石漠化治理对生物多样性表现出积极贡献,对后续生态修复工程的实施以及生物多样性的保护具有一定指导意义。

关键词：中国西南石漠化治理气候变化生物多样性

综合物探方法在青海莫哈尔金多金属矿区的找矿勘查应用

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矿产与地质 2024年第4期38卷 753-760页

作者：夏强廖思睿刘相钊薛超平梁小龙青海省有色第三地质勘查院青海西宁810012

在充分收集已有地质、矿产和物探勘查成果的基础上,以岩(矿)石物性特征为基础,选择高精度磁法测量、磁法剖面和激电中梯测量的物探方法对青海省莫哈尔地区12.5万水系沉积物化探异常开展查证。结果表明:高精度磁法和激电测量在构造破碎... 详细信息

在充分收集已有地质、矿产和物探勘查成果的基础上,以岩(矿)石物性特征为基础,选择高精度磁法测量、磁法剖面和激电中梯测量的物探方法对青海省莫哈尔地区12.5万水系沉积物化探异常开展查证。结果表明:高精度磁法和激电测量在构造破碎带和超基性岩体识别上具有良好的应用效果;低阻高极化异常是寻找构造蚀变岩型多金属矿的间接找矿标志,高磁异常区是寻找岩浆熔离型Cu-Ni矿区的理想靶区;综合物探成果在金多金属矿勘探中具有重要的指导意义。

关键词：激电中梯高精度磁法异常解释找矿标志青海莫哈尔地区

Biomimetic,biodegradable and osteoinductive treated dentin matrix/α-calcium sulphate hemihydrate composite material for bone tissue engineering

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Regenerative Biomaterials 2023年第1期10卷 1222-1232页

作者： Runying Guo Rui Zhang sirui Liu Yanyu Yang Wenhang Dong Meiyue Wang Hongyan Mi Mengzhe Liu Jingjing Sun xue Zhang Yimeng Su Yiming Liu Di Huang Rui Li Department of Stomatology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450000PR China Department of Stomatology The First Affiliated Hospital of Nanchang UniversityNanchang 330000PR China Oral and Maxillofacial Department Zhengzhou Stomatology HospitalZhengzhou 450000PR China College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450000PR China Research Center for Nano-biomaterials and Regenerative Medicine College of Biomedical EngineeringTaiyuan University of TechnologyTaiyuan 030024PR China

It is still a huge challenge for bone regenerative biomaterial to balance its mechanical,biological and biodegradable *** the present study,a new composite material including treated dentin matrix(TDM)andα-calcium sulphate hemihydrate(α-CSH)was *** optimal composition ratio between TDM andα-CSH was *** results indicate that both components were physically mixed and structurally *** compressive strength reaches up to 5.027±0.035 MPa for 50%TDM/α-CSH group,similar to human cancellous bone *** experiments results show that TDM/α-CSH composite exhibits excellent biocompatibility and the expression of osteogenic related genes and proteins(ALP,RUNX2,OPN)is significantly *** vivo experiments suggest that the addition of TDM for each group(10%,30%,50%)effectively promotes cell proliferation and *** addition,50%of the TDM/α-CSH combination displays optimal *** novel TDM/α-CSH composite is a good candidate for certain applications in bone tissue engineering.

关键词： bone defect treated dentin matrix α-calcium sulphate hemihydrate osteogenesis

Treated dentin matrix induces odontogenic differentiation of dental pulp stem cells via regulation of Wnt/β-catenin signaling

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Bioactive Materials 2022年第1期7卷 85-97页

作者： sirui Liu Jingjing Sun Shuai Yuan Yanyu Yang Yuping Gong Ying Wang Runying Guo xue Zhang Yiming Liu Hongyan Mi Meiyue Wang Mengzhe Liu Rui Li Department of Stomatology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina Academy of Medical Sciences at Zhengzhou University ZhengzhouChina College of Materials Science and Engineering Zhengzhou University ZhengzhouHenan 450001China

Treated dentin matrix(TDM)is an ideal scaffold material containing multiple extracellular matrix *** canonical Wnt signaling pathway is necessary for tooth ***,this study investigated whether the TDM can promote the odontogenic differentiation of human dental pulp stem cells(hDPSCs)and determined the potential role of Wnt/β-catenin signaling in this *** concentrations of TDM promoted the dental differentiation of the hDPSCs and meanwhile,the expression of GSK3βwas *** note,the expression of the Wnt/β-catenin pathway-related genes changed significantly in the context of TDM induction,as per RNA sequencing(RNA seq)*** addition,the experiment showed that new dentin was visible in rat mandible cultured with TDM,and the thickness was significantly thicker than that of the control *** addition,immunohistochemical staining showed lower GSK3βexpression in new ***,the GSK3βknockdown hDPSCs performed enhanced odotogenesis compared with the control ***,GSK3βoverexpressing could decrease odotogenesis of TDM-induced *** results were confirmed in immunodeficient mice and Wistar *** suggest that TDM promotes odontogenic differentiation of hDPSCs by directly targeting GSK3βand activating the canonical Wnt/β-catenin signaling pathway and provide a theoretical basis for tooth regeneration engineering.

关键词： Dental pulp stem cells Treated dentin matrix GSK3β Odontogenic differentiation Wnt/β-catenin signaling pathway

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仪器仪表学报 2019年第1期40卷 125-131页

作者：王思睿薛严冰宋智孟影大连交通大学电气信息工程学院大连116028

为实现物流包装的身份和受潮信息双重检测,设计了一种新型的低成本无芯片RFID湿度传感器,使用电耦合LC谐振器(ELC谐振器)作为湿度传感器监测目标环境相对湿度、U型环谐振器作为无芯片编码结构识别目标身份。通过射频仿真软件HFSS研究谐... 详细信息

为实现物流包装的身份和受潮信息双重检测,设计了一种新型的低成本无芯片RFID湿度传感器,使用电耦合LC谐振器(ELC谐振器)作为湿度传感器监测目标环境相对湿度、U型环谐振器作为无芯片编码结构识别目标身份。通过射频仿真软件HFSS研究谐振器结构参数与谐振频率的关系,获得相应拟合公式,为结构参数设计提供理论依据,并在此基础上设计了8位编码结构;系统研究不同质量分数的聚乙烯醇(PVA)溶液对湿度传感器感湿灵敏度和感湿范围的影响,研制出8位无芯片RFID湿度传感器。根据散射参量提取法获得了U型环谐振器的有效电磁参数,表明其具有超材料属性。所研究的湿度传感器具有感湿灵敏度高、编码容量大、结构简单等优点,有望在智能包装领域得到应用。

关键词：无芯片射频识别技术湿度传感器超材料 U型环谐振器电耦合LC谐振器