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金川铜镍硫化物矿床两类矿石的稀土元素地球化学特征研究

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矿床地质 2008年第5期27卷 613-621页

作者：赵振华钱汉东西北核技术研究所陕西西安710024 南京大学地球科学系江苏南京210093

文章对金川铜镍硫化物矿床的网状富矿石和星点状贫矿石的稀土元素地球化学特征进行了研究,结果表明:网状富矿石的稀土元素含量低于星点状矿石,这可能与矿石中硫化物及橄榄石含量有关;网状富矿石的δEu差别大,结合矿石显微照片的结构特征... 详细信息

文章对金川铜镍硫化物矿床的网状富矿石和星点状贫矿石的稀土元素地球化学特征进行了研究,结果表明:网状富矿石的稀土元素含量低于星点状矿石,这可能与矿石中硫化物及橄榄石含量有关;网状富矿石的δEu差别大,结合矿石显微照片的结构特征,说明其岩浆演化环境比较复杂,应该处于缓慢冷凝的早期深部熔离成矿作用阶段;而星点状矿石样品的稀土元素标准化分布曲线相似,结合矿石显微照片的结构特征,指示其应该形成于快速冷凝的晚期就地熔离成矿作用。此外,两者的轻、重稀土元素分馏程度相当,这否定了贫矿岩浆与富矿岩浆之间的演化关系,揭示了原始岩浆分层后,各层岩浆是独立演化并成矿的。

关键词：地球化学金川铜镍硫化物矿床 Q型聚类分析稀土元素深部熔离作用就地熔离作用

西天山特克斯北中酸性火成岩地球化学特征及成因意义

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岩石学报 2012年第7期28卷 2145-2157页

作者：朱志敏赵振华熊小林中国科学院广州地球化学研究所矿物学与成矿学重点实验室广州510640 中国科学院研究生院北京100049 中国科学院广州地球化学研究所同位素地球化学国家重点实验室广州510640

新疆西天山特克斯县城北部伊特公路沿线和库勒萨依出露大量中酸性火成岩,伊特公路沿线为石英钠长斑岩,库勒萨依为石英闪长斑岩和花岗闪长斑岩。岩石地球化学和同位素组成研究表明,前者为典型的岛(陆)弧带火成岩,而后者具有埃达克岩的成... 详细信息

新疆西天山特克斯县城北部伊特公路沿线和库勒萨依出露大量中酸性火成岩,伊特公路沿线为石英钠长斑岩,库勒萨依为石英闪长斑岩和花岗闪长斑岩。岩石地球化学和同位素组成研究表明,前者为典型的岛(陆)弧带火成岩,而后者具有埃达克岩的成分特征,两者均为古亚洲洋壳在俯冲过程中岩浆活动的产物。早先俯冲的较冷洋壳板片在深处脱水诱发上覆地幔楔熔融,熔体上升并经历壳幔相互作用等过程引发伊特公路一带弧岩浆活动;由于洋壳持续俯冲,后来新形成的靠近洋脊的年轻板片由于高热在较浅处直接发生部分熔融形成埃达克岩浆,并上侵至库勒萨依一带。库勒萨依斑岩体SIMS锆石U-Pb年龄为342.5±2.3Ma,属于早石炭世。两组中酸性火成岩的地球化学特征表明,古亚洲洋(南天山洋)在早石炭世还未完全闭合,洋壳向北的持续俯冲过程造成伊犁-中天山板块南缘广泛的岩浆活动,此时西天山陆壳增生方式主要为侧向增生,增生物质主要为洋壳板片(埃达克岩)和洋壳板片流体交代的地幔楔成分。

关键词：岛弧火成岩埃达克岩锆石U-Pb年龄地壳增生西天山

Genetic analysis of transcription factors in dopaminergic neuronal development in Parkinson’s disease

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Chinese Medical Journal 2024年第4期137卷 450-456页

作者： Yuwen zhao Lixia Qin Hongxu Pan Tingwei Song Yige Wang Xiaoxia Zhou Yaqin Xiang Jinchen Li zhenhua Liu Qiying Sun Jifeng Guo Xinxiang Yan Beisha Tang Qian Xu Department of Neurology Xiangya HospitalCentral South UniversityChangshaHunan 410008China Department of Neurology The Second Xiangya HospitalCentral South UniversityChangshaHunan 410011China Bioinformatics Center National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan 410008China Department of Geriatrics Xiangya HospitalCentral South UniversityChangshaHunan 410008China Centre for Medical Genetics and Hunan Key Laboratory of Medical Genetics School of Life SciencesCentral South UniversityChangshaHunan 410008China Key Laboratory of Hunan Province in Neurodegenerative Disorders Central South UniversityChangshaHunan 410008China

Background:Genetic variants of dopaminergic transcription factor-encoding genes are suggested to be Parkinson’s disease(PD)risk factors;however,no comprehensive analyses of these genes in patients with PD have been ***,we aimed to genetically analyze 16 dopaminergic transcription factor genes in Chinese patients with ***:Whole-exome sequencing(WES)was performed using a Chinese cohort comprising 1917 unrelated patients with familial or sporadic early-onset PD and 1652 ***,whole-genome sequencing(WGS)was performed using another Chinese cohort comprising 1962 unrelated patients with sporadic late-onset PD and 1279 ***:We detected 308 rare and 208 rare protein-altering variants in the WES and WGS cohorts,***-based association analyses of rare variants suggested that MSX1 is enriched in sporadic late-onset ***,the significance did not pass the Bonferroni ***,72 and 1730 common variants were found in the WES and WGS cohorts,***,single-variant logistic association analyses did not identify significant associations between common variants and ***:Variants of 16 typical dopaminergic transcription factors might not be major genetic risk factors for PD in Chinese ***,we highlight the complexity of PD and the need for extensive research elucidating its etiology.

关键词： Parkinson’s disease Transcription factors Dopaminergic neurons Genetic Variants

Discovery of Permian island-arc basalts in the Cenxi area and the tectonic significance──A piece of evidence for the paleo-Tethyan tectonic belt in western Guangdong and eastern Guangxi

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Chinese Science Bulletin 1998年第21期43卷 1838-1842页

作者： ZHANG Boyou 1, zhao zhenhua 1, SHI Manquan 1, YANG Shufeng 2 and CHEN Hanlin 2 1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2. Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China Department of Earth Sciences Zhejiang University Hangzhou China

Cenxi Permian basalts are the late Palaeozoic island-arc type basalts first found in South China. REE and trace element characteristics and distribution patterns show that this volcanic formation, which has been isotopically dated at 261 MaB.P. by the 39Ar/ 40Ar method, is of an active continental marginal island arc type, and that the tectonic environment at that time was an island-arc marginal sea or minor ocean basin related with the paleo-Tethyan tectonic belt in western Guangdong-eastern Guangxi.

关键词： spilite-keratophyre pillow lava Permian continental margin paleo-Tethyan evolution.

Porous tantalum-composited gelatin nanoparticles hydrogel integrated with mesenchymal stem cell-derived endothelial cells to construct vascularized tissue in vivo

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Regenerative Biomaterials 2021年第6期8卷 92-105页

作者： zhenhua zhao Mang Wang Fei Shao Ge Liu Junlei Li Xiaowei Wei Xiuzhi Zhang Jiahui Yang Fang Cao Qiushi Wang Huanan Wang Dewei zhao Orthopaedic Department Affiliated ZhongShan Hospital of Dalian UniversityNo.6 Jiefang StreetZhongshan DistrictDalianLiaoning 116001P.R.China National-Local Joint Engineering Laboratory for the Development of Orthopedic Implant Materials Affiliated ZhongShan Hospital of Dalian UniversityNo.6 Jiefang StreetZhongshan DistrictDalianLiaoning 116001P.R.China Key State Laboratory of Fine Chemicals School of BioengineeringDalian University of TechnologyNo.2Linggong RoadHigh-Tech DistrictDalian 116024P.R.China School of Mechanical Engineering Dalian Jiaotong UniversityDalian 116028P.R.China Reproductive Medicine Centre Affiliated ZhongShan Hospital of Dalian UniversityNo.6 Jiefang StreetZhongshan DistrictDalianLiaoning 116001P.R.China Department of Biomedical Engineering Faculty of Electronic Information and Electronical EngineeringDalian University of TechnologyDalian 116024P.R.China Laboratory Animal Center Affiliated ZhongShan Hospital of Dalian UniversityNo.6 Jiefang StreetZhongshan DistrictDalianLiaoning 116001P.R.China

The ideal scaffold material of angiogenesis should have mechanical strength and provide appropriate physiological microporous structures to mimic the extracellular matrix *** this study,we constructed an integrated three-dimensional scaffold material using porous tantalum(pTa),gelatin nanoparticles(GNPs)hydrogel,and seeded with bone marrow mesenchymal stem cells(BMSCs)-derived endothelial cells(ECs)for vascular tissue *** characteristics and biocompatibility of pTa and GNPs hydrogel were evaluated by mechanical testing,scanning electron microscopy,cell counting kit,and live-cell *** BMSCs-derived ECs were identified by flow cytometry and angiogenesis ***-derived ECs were seeded on the pTa-GNPs hydrogel scaffold and implanted subcutaneously in nude *** weeks after the operation,the scaffold material was evaluated by *** superior biocompatible ability of pTa-GNPs hydrogel scaffold was *** in vivo results suggested that 28 days after implantation,the formation of the stable capillary-like network in scaffold material could be promoted *** novel,integrated pTa-GNPs hydrogel scaffold is biocompatible with the host,and exhibits biomechanical and angiogenic ***,combined with BMSCs-derived ECs,it could construct vascular engineered tissue in *** study may provide a basis for applying pTa in bone regeneration and autologous BMSCs in tissue-engineered vascular grafts.

关键词： porous tantalum gelatin nanoparticles hydrogel bone marrow mesenchymal stem cell endothelial cell vascularization

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不同形状砂尘高速冲蚀TC4平板的数值仿真

航空动力学报 2019年第2期34卷 321-330页

作者：马松林赵振华颜诚陈伟南京航空航天大学能源与动力学院航空发动机热环境与热结构工业和信息化部重点实验室南京210016

含有砂尘的空气吸入发动机,会与压气机转子叶片以较高的相对速度发生碰撞,产生砂尘冲蚀现象,严重影响到飞行器飞行安全。通过采用能较好适应大变形的光滑粒子流体动力学(SPH)方法和有限元(FE)耦合的方法,建立不同形状砂尘冲蚀TC4平板模... 详细信息

含有砂尘的空气吸入发动机,会与压气机转子叶片以较高的相对速度发生碰撞,产生砂尘冲蚀现象,严重影响到飞行器飞行安全。通过采用能较好适应大变形的光滑粒子流体动力学(SPH)方法和有限元(FE)耦合的方法,建立不同形状砂尘冲蚀TC4平板模型,研究TC4平板表面受砂尘高速冲蚀的典型损伤形式及其规律。结果表明:砂尘尖角越小,冲击产生的弹坑越深,所造成的损伤也越大;随砂尘逐颗撞击平板,弹坑的深度变化越来越小,表现为平板表面的塑性硬化过程;在砂尘连续冲击下,受到冲击角的影响,损伤处的堆积物可能被砂尘冲脱平板,也可能被重新压回弹坑。

关键词：砂尘冲蚀 TC4平板堆积物光滑粒子流体动力学(SPH) 冲击角

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《唐张羲之夫人阿史那氏墓志》与胡汉联姻

西域研究 2006年第2期 90-94页

作者：郭茂育赵振华河南洛阳师范学院图书馆河南洛阳古代艺术馆

墓志记载盛唐时期突厥首领、双河郡都督?舍提噋啜嫁女阿史那氏于羽林军大将军张羲之,结为姻戚,生活于长安。统治阶层胡汉联姻是社会开放型婚姻的表象,体现了朝廷绥靖西域、促进民族交流与融合的史实。

关键词：阿史那氏张羲之墓志突厥唐代

基于改善轮轨共形度的60kg/m钢轨廓形优化

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西南交通大学学报 2022年第6期57卷 1233-1238页

作者：王璞王树国赵振华司道林中国铁道科学研究院集团有限公司铁道建筑研究所北京100081

重载铁路及客货共线铁路运营条件下,轮轨磨耗问题尤为突出.为了有效减缓轮轨磨耗发展,以不同接触条件下轮轨廓形共形度最优为原则,设计目标函数及约束条件,建立钢轨廓形非线性优化数学模型,并基于序列二次规划法进行求解,提出60 kg/m钢... 详细信息

重载铁路及客货共线铁路运营条件下,轮轨磨耗问题尤为突出.为了有效减缓轮轨磨耗发展,以不同接触条件下轮轨廓形共形度最优为原则,设计目标函数及约束条件,建立钢轨廓形非线性优化数学模型,并基于序列二次规划法进行求解,提出60 kg/m钢轨廓形的优化方案;从轮轨接触几何关系、车辆-轨道系统动力作用、磨耗的角度对优化廓形的优化效果进行了对比分析.结果表明:1)所提出的60 kg/m钢轨优化廓形相对于原始廓形使目标函数值降低了50%,与LM车轮廓形具有更高的共形度水平;2)优化廓形的轮轨接触点分布更为均匀,在轮对横移量较小的条件下轮径差更小,在轮对横移较大的条件下轮径差更大;3)优化廓形对车辆运行安全性和平稳性无显著影响,可有效增大轮轨接触面积达11.24%,降低接触应力达20.42%,减缓轮轨磨耗发生发展速率.

关键词： 60kg/m钢轨廓形非线性优化轮轨共形度轮轨接触几何车辆-轨道系统动力学

Fully solution-processed n-i-p type perovskite solar cells with efficiency over 19% enabled by a hydrophobic PEDOT:F interlayer and silver nanowire top electrode

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Fully solution-processed n-i-p type perovskite solar cells w...