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沿海地区地下水水质特征及其对地下水源热泵系统潜在性危害

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吉林大学学报（地球科学版） 2023年第4期53卷 1204-1215页

作者：李世杰骆祖江徐明钻张斌河海大学地球科学与工程学院南京211100 江苏省地质勘察技术院南京211100

沿海地区地下水化学条件复杂,为查明地下水水质对地下水源热泵系统(GWHP)的危害,对危害机理进行了研究。通过对江苏省盐城地区潜水和第Ⅰ承压水的水化学分析,确定主要离子来源以及成因作用,重点分析了Mg^(2+)、Ca^(2+)、Fe^(2+)的危害性... 详细信息

沿海地区地下水化学条件复杂,为查明地下水水质对地下水源热泵系统(GWHP)的危害,对危害机理进行了研究。通过对江苏省盐城地区潜水和第Ⅰ承压水的水化学分析,确定主要离子来源以及成因作用,重点分析了Mg^(2+)、Ca^(2+)、Fe^(2+)的危害性,最终利用水文地球化学软件PHREEQC计算饱和指数Is,分析了地下水越流混合作用、地下水回灌叠加对地下水源热泵的潜在危害。结果表明:盐城地区地下水TDS(溶解性总固体)质量浓度高,硬度高,Na^(+)、Mg^(2+)、Ca^(2+)、Fe^(2+)、HCO_(3)^(-)、Cl^(-)是主要质量浓度异常的离子;潜水ρ(TDS)为180.42~4 497.00 mg/L,ρ(Na^(+))、ρ(Mg^(2+))、ρ(Ca^(2+))分别为278.16、72.91、72.74 mg/L,ρ(HCO_(3)^(-))、ρ(Cl-)分别为487.33、298.76 mg/L;第Ⅰ承压水ρ(TDS)为508.50~17 182.00 mg/L,ρ(Na^(+))、ρ(Ca^(2+))、ρ(Fe^(2+))分别为1 595.06、564.57、4.50 mg/L,ρ(Cl-)为4 560.06 mg/L。地下水运移过程受到溶滤作用、古海水入侵作用等多种水岩反应的影响。地下水源热泵长期运行主要会呈现Fe(OH)_(3)结垢、CaCO_(3)与CaMg(CO_(3))_(2)沉淀结垢等问题。

关键词：复杂水化学条件地下水源热泵系统地下水结垢地下水

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江苏盐城地面沉降风险评价

中国地质灾害与防治学报 2020年第1期31卷 36-43页

作者：顾晟彦姚维军徐明钻王丹江苏省地质勘查技术院

地面沉降灾害已经成为制约地区社会经济可持续发展的重要因素,风险评估和管理是实现灾害防治从被动防御向主动防治转变的标志。根据地面沉降现状以及区域地质情况、水文地质条件等,分析了盐城地区的地面沉降机理及其主要影响因素。结合... 详细信息

地面沉降灾害已经成为制约地区社会经济可持续发展的重要因素,风险评估和管理是实现灾害防治从被动防御向主动防治转变的标志。根据地面沉降现状以及区域地质情况、水文地质条件等,分析了盐城地区的地面沉降机理及其主要影响因素。结合盐城实际,选取累计地面沉降量、地面沉降速率、软土层厚度、主要开采层厚度、地下水开发利用程度作为危险性指标以及单位面积GDP比重、人口密度比重、地面高程作为易损性指标,绘制了危险性分区图和易损性分区图,建立地面沉降风险评价体系。利用层次分析-综合指数法和MapGIS空间分析功能,开展地面沉降风险综合评价。根据评价结果并结合地面沉降现状和已有的防治措施,提出切实可行的改进措施和建议。

关键词：地面沉降风险评价防治建议江苏盐城

莫桑比克Kazuzu地区金矿地质特征及找矿方向初探

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矿产勘查 2022年第5期13卷 692-699页

作者：徐涛徐明钻冯自成陈峰江苏省地质勘查技术院江苏南京210049

莫桑比克楠普拉省Kazuzu地区为上利哥尼亚(Alto Ligonha)伟晶岩金矿带重要金矿富集区之一,金矿体主要赋存于中元古界玛玛拉岩组和莫罗奎岩组的变质岩中,矿石类型为石英脉型、钾长石—石英脉型、石英网脉型,区内金矿体基本平行或小角度... 详细信息

莫桑比克楠普拉省Kazuzu地区为上利哥尼亚(Alto Ligonha)伟晶岩金矿带重要金矿富集区之一,金矿体主要赋存于中元古界玛玛拉岩组和莫罗奎岩组的变质岩中,矿石类型为石英脉型、钾长石—石英脉型、石英网脉型,区内金矿体基本平行或小角度斜切片麻理,主成矿期为泛非期。本文在区域地质背景研究、矿体地质特征、控矿因素和找矿标志分析的基础上,结合区内地球物理特征和室内综合研究,认为高阻—高极化异常区JD-1异常区和JD-3异常区为本区下步找矿重点区域,找矿潜力很大。本文旨在对Kazuzu地区金矿床地质特征和成矿规律研究,实现金矿床找矿突破,以期为国内矿业企事业单位赴莫桑比克开展矿业投资和开发提供依据。

关键词：地质调查工程金矿地质特征找矿标志 Kazuzu地区莫桑比克

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莫桑比克前寒武纪地质与成矿特征

矿产勘查 2021年第10期12卷 2083-2096页

作者：徐涛陈峰徐明钻冯自成江苏省地质勘查技术院江苏南京210049

莫桑比克作为全球重要的前寒武纪变质单元之一,是冈瓦纳古陆重要的组成部分。对其基础地质研究过程从19世纪初至今主要经历了4个阶段,本世纪初至今新理论和新方法的应用使得其基础地质研究得到飞跃发展。莫桑比克的前寒武纪地质单元可... 详细信息

莫桑比克作为全球重要的前寒武纪变质单元之一,是冈瓦纳古陆重要的组成部分。对其基础地质研究过程从19世纪初至今主要经历了4个阶段,本世纪初至今新理论和新方法的应用使得其基础地质研究得到飞跃发展。莫桑比克的前寒武纪地质单元可划分为津巴布韦-马尼卡克拉通基底、莫桑比克构造带及伊鲁米德构造带3个部分,其每部分又可进一步细分不同的构造单元(细化)。结合地质特征及矿产分布情况明确了莫桑比克的优势矿产资源为天然气、煤、钛、金、钽及石墨等矿种。莫桑比克可划分为北赞比西河成矿省、津巴布韦克拉通边界-巴鲁埃杂岩成矿省、乌南戈-利欣加成矿省、莫桑比克带-鲁伍马-赞比西成矿带省等四大成矿省和21个具有找矿前景的多金属成矿远景区。本文详细地划分了莫桑比克前寒武纪重要成矿区带并分析其成矿地质条件,结合近年来的矿产勘查工作认识,系统梳理了莫桑比克前寒武纪重要成矿区带的成矿条件和规律,重点总结了优势矿种的成矿特征,为莫桑比克矿业投资提供参考,并针对开展莫桑比克重要战略矿产的投资提供依据。

关键词：前寒武纪冈瓦纳大陆优势矿产成矿远景区莫桑比克

Enantio-divergent C–H borylation with two different ligands from a single chiral source

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Science China Chemistry 2025年第1期68卷 226-232页

作者： Rongrong Du Senmiao xu State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences College of Material Chemistry and Chemical Engineering Key Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of Education Hangzhou Normal University University of Chinese Academy of Sciences

Reported here is an iridium-catalyzed enantio-divergent C（sp3）–H borylation of α-gem-dimethyl groups of trifluoromethyl ketone-derived hydrazones to construct a series of acyclic all-carbon quaternary stereocenters with a high level of chiral induction. Two different chiral bidentate boryl ligands from a common chiral source not only can switch the enantioselectivity but also are complementary in terms of the substrate scope.

关键词： asymmetric catalysis C–H borylation all-carbon quaternary stereocenters synthetic methods

Aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders:progress of experimental models based on disease pathogenesis

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Neural Regeneration Research 2025年第2期20卷 354-365页

作者： Li xu Huiming xu Changyong Tang Department of Neurology The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

Neuromyelitis optica spectrum disorders are neuroinflammatory demyelinating disorders that lead to permanent visual loss and motor *** date,no effective treatment exists as the exact causative mechanism remains ***,experimental models of neuromyelitis optica spectrum disorders are essential for exploring its pathogenesis and in screening for therapeutic *** most patients with neuromyelitis optica spectrum disorders are seropositive for IgG autoantibodies against aquaporin-4,which is highly expressed on the membrane of astrocyte endfeet,most current experimental models are based on aquaporin-4-IgG that initially targets *** experimental models have successfully simulated many pathological features of neuromyelitis optica spectrum disorders,such as aquaporin-4 loss,astrocytopathy,granulocyte and macrophage infiltration,complement activation,demyelination,and neuronal loss;however,they do not fully capture the pathological process of human neuromyelitis optica spectrum *** this review,we summarize the currently known pathogenic mechanisms and the development of associated experimental models in vitro,ex vivo,and in vivo for neuromyelitis optica spectrum disorders,suggest potential pathogenic mechanisms for further investigation,and provide guidance on experimental model *** addition,this review summarizes the latest information on pathologies and therapies for neuromyelitis optica spectrum disorders based on experimental models of aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders,offering further therapeutic targets and a theoretical basis for clinical trials.

关键词： aquaporin-4 experimental model neuromyelitis optica spectrum disorder pathogenesis

Reducing the measurement errors in nonadiabatic holonomic quantum computers

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 64-70页

作者： Guo-Fu xu Department of Physics Shandong University

Nonadiabatic holonomic quantum computers serve as the physical platform for nonadiabatic holonomic quantum *** quantum computation has entered the noisy intermediate-scale era, building accurate intermediate-scale nonadiabatic holonomic quantum computers is clearly necessary. Given that measurements are the sole means of extracting information, they play an indispensable role in nonadiabatic holonomic quantum computers. Accordingly, developing methods to reduce measurement errors in nonadiabatic holonomic quantum computers is of great importance. However, while much attention has been given to the research on nonadiabatic holonomic gates, the research on reducing measurement errors in nonadiabatic holonomic quantum computers is severely lacking. In this study, we propose a measurement error reduction method tailored for intermediate-scale nonadiabatic holonomic quantum computers. The reason we say this is because our method can not only reduce the measurement errors in the computer but also be useful in mitigating errors originating from nonadiabatic holonomic gates. Given these features,our method significantly advances the construction of accurate intermediate-scale nonadiabatic holonomic quantum computers.

关键词： quantum holonomy quantum computation measurement errors

苏北典型污染耕地土壤-植物系统中重金属元素的分布特征

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地质学刊 2022年第1期46卷 67-74页

作者：徐祖阳严维兵徐明钻张训许云徐小松江苏省地质勘查技术院江苏南京210049

基于前期调查,采集水稻籽实样品共50件,在选定的3处地块采集9组土壤和水稻组合样品,每组样品包括根系土、水稻根系、水稻茎和籽实,分析其各部位的重金属元素含量,探究重金属元素在植物不同部位的迁移与富集机理。研究区水稻不同部位的... 详细信息

基于前期调查,采集水稻籽实样品共50件,在选定的3处地块采集9组土壤和水稻组合样品,每组样品包括根系土、水稻根系、水稻茎和籽实,分析其各部位的重金属元素含量,探究重金属元素在植物不同部位的迁移与富集机理。研究区水稻不同部位的元素富集规律为根系富集系数F(As)>F(Cu)>F(Cd)>F(Zn)≈F(Hg)>F(Cr)≈F(Ni)≈F(Pb),茎部富集系数F(Hg)>F(Zn)≈F(Cu)>F(Cd)>F(As)>F(Cr)>F(Ni)>F(Pb),籽实富集系数F(Zn)>F(Cu)>F(Cd)>F(Ni)>F(As)≈F(Cr)>F(Pb),水稻植株内重金属元素含量分布规律为根系茎>籽实。重金属元素在该系统中的迁移系数和迁移模式可分为4类。研究结果对土壤环境修复与合理利用等有一定的借鉴意义。

关键词：重金属迁移富集农作物污染耕地苏北

Mitophagy in acute central nervous system injuries:regulatory mechanisms and therapeutic potentials

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Neural Regeneration Research 2025年第9期20卷 2437-2453页

作者： Siyi xu Junqiu Jia Rui Mao Xiang Cao Yun xu Department of Neurology Nanjing Drum Tower HospitalClinical College of Jiangsu UniversityNanjingJiangsu ProvinceChina Department of Neurology Nanjing Drum Tower HospitalChinese Academy of Medical Science&Peking Union Medical CollegeNanjingJiangsu ProvinceChina Department of Neurology Nanjing Drum Tower HospitalAffiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina State Key Laboratory of Pharmaceutical Biotechnology and Institute of Translational Medicine for Brain Critical Diseases Nanjing UniversityNanjingJiangsu ProvinceChina Jiangsu Key Laboratory for Molecular Medicine Medical School of Nanjing UniversityNanjingJiangsu ProvinceChina Nanjing Neurology Medical Center NanjingJiangsu ProvinceChina

Acute central nervous system injuries,including ischemic stro ke,intracerebral hemorrhage,subarachnoid hemorrhage,traumatic brain injury,and spinal co rd injury,are a major global health *** optimal therapies and improving the long-term neurological functions of patients with acute central nervous system injuries are urgent *** are susceptible to damage after acute central nervous system injury,and this leads to the release of toxic levels of reactive oxygen species,which induce cell ***,a selective form of autophagy,is crucial in eliminating redundant or damaged mitochondria during these *** evidence has highlighted the significant role of mitophagy in acute central nervous system *** this review,we provide a comprehensive overview of the process,classification,and related mechanisms of *** also highlight the recent developments in research into the role of mitophagy in various acute central nervous system injuries and drug therapies that regulate *** the final section of this review,we emphasize the potential for treating these disorders by focusing on mitophagy and suggest future research paths in this area.

关键词： autophagy intracerebral hemorrhage ischemic stroke mitochondria mitochondrial biogenesis mitochondrial quality control mitophagy spinal cord injury subarachnoid hemorrhage traumatic brain injury