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Petrogenesis and Tectonic Implications of the Early Triassic Nianzi Adakitic Granite Unit in the Yanshan Fold and Thrust Belt:New Constraints from U-Pb Geochronology and Sr-Nd-Hf Isotopes

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 50-66页

作者： ZHANG Huijun WU Chu HE Fubing WANG Biren CUI Yubin liu zhenghua YOU Shina DONG Jing Development and Research Center of the China Geological Survey Beijing 100037China Beijing Institute of the Geological Survey Beijing 100095China Institute of Disaster Prevention LangfangHebei 065201China

The Nianzi granite unit,which includes the Nianzi,Xiaolianghou and Xiawopu granitic intrusions,is a significant component of the northern part of the North China Craton(NCC)and is situated in the Yanshan fold and thrust belt(YFTB).However,there is still debate regarding the tectonic evolutionary history of the YFTB during the late Permian to Triassic period,specifically regarding the timing of subduction and collision between the NCC and the Paleo-Asian *** Nianzi granite unit exhibits unique petrological,geochronological and geochemical signatures that shed light on the tectonic evolutionary history of the *** study presents detailed petrology,whole-rock geochemistry,together with Sr-Nd isotopic,zircon U-Pb dating and Lu-Hf isotopic data of the granites within the Nianzi granite *** findings demonstrate that the granites primarily consist of subhedral K-feldspar,plagioclase,quartz,minor biotite and hornblende,with accessory titanite,apatite,magnetite and *** U-Pb dating indicates that the Xiaolianghou granite was emplaced at 247.5±0.62 ***,the adakitic characteristics of the Nianzi,Xiawopu and Xiaolianghou granitic intrusions,such as high Sr and Ba contents and high ratios of Sr/Y and(La/Yb)N,combined with negative Sr-Nd and Lu-Hf isotopes(87Sr/86Sr)i=0.705681–0.7057433,εNd(t)=−21.98 to−20.97,zirconεHf(t)=−20.26 to−9.92,as well as the I-type granite features of high SiO_(2),Na_(2)O and K_(2)O/Na_(2)O ratios,enriched Rb,K,Sr and Ba,along with depleted Th,U,Nb,Ta,P and Ti,suggest that the Nianzi granitic unit was mainly derived from the partial melting of a thickened lower crust containing hydrous,calc-alkaline to high-K calc-alkaline,mafic to intermediate metamorphic *** light of these parameters,we further integrate our data with previous studies and conclude that the Nianzi granitic unit was generated in a post-collisional extensional environment during the Early Triassic.

关键词： tectonic evolution zircon geochronology Sr-Nd-Hf isotopes Nianzi granite unit Yanshan fold and thrust belt

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Target-induced Trivalent G-quadruplex/hemin DNAzyme for Colorimetric Detection of Hg^(2+) Based on an Exonuclease III Assisted Catalytic Hairpin Assembly

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Agricultural Biotechnology 2024年第1期13卷 51-57页

作者： zhenghua liu Zhonghai LI College of Food Science and Engineering Central South University of Forestry and TechnologyChangsha410004China Technology Center of Changsha Customs District of People s Republic of China Changsha410004China

Mercury ion(Hg^(2+)),a highly noxious of heavy metalion,has detrimental effects on the ecological environment and human ***,we have developed an exonuclease III(Exo III)assisted catalytic hairpin assembly formation of a trivalent G-quadruplex/hemin DNAzyme for colorimetric detection of Hg^(2+).A hairpin DNA(Hr)was designed with thymine-Hg^(2+)-thymine pairs that catalyzed by Exo III is prompted to happen upon binding Hg^(2+).A released DNA fragment triggers the catalytic assembly of other three hairpins(H1,H2,and H3)to form many trivalent G-quadruplex/hemin DNA enzymes for signal *** developed sensor shows a dynamic range from 2 pM to 2μM,with an impressively low detection limit of 0.32 pM for Hg^(2+)*** a sensor also has good selectivity toward Hg^(2+)detection in the presence of other common metal *** strategy shows the great potential for visual detection with portable type.

关键词： G-quadruplex/hemin DNAzyme Multivalence Catalytic hairpin assembly Exonuclease III Signal amplification Colorimetric detection

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Biocontrol agents modulate phyllosphere microbiota interactions against pathogen Pseudomonas syringae

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Environmental Science and Ecotechnology 2024年第5期21卷 309-317页

作者： Zhaoyue Yang Tianbo liu Jianqiang Fan Yiqiang Chen Shaolong Wu Jingjing Li zhenghua liu Zhendong Yang Liangzhi Li Suoni liu Hongwu Yang Huaqun Yin Delong Meng Qianjun Tang College of Plant Protection Hunan Agricultural UniversityChangsha410128HunanChina School of Minerals Processing and Bioengineering Central South UniversityChangsha410083HunanChina Hunan Tobacco Research Institute Changsha410004HunanChina Technology Center Fujian Tobacco Industrial Co.Ltd.Xiamen361000FujianChina School of Architecture and Civil Engineering Chengdu UniversityChengdu610106SichuanChina Yongzhou Tobacco Corporation Yongzhou425000HunanChina

The pathogen Pseudomonas syringae,responsible for a variety of diseases,poses a considerable threat to global crop *** biocontrol strategies employ antagonistic microorganisms,utilizing phyllosphere microecology and systemic resistance to combat this ***,the interactions between phyllosphere microbial dynamics and the activation of the plant defense system remain poorly *** we show significant alterations in phyllosphere microbiota structure and plant gene expression following the application of biocontrol *** reveal enhanced collaboration and integration of Sphingomonas and Methylobacterium within the microbial co-occurrence ***,Sphingomonas inhibits *** by disrupting pathogen chemotaxis and ***,both Sphingomonas and Methylobacterium activate plant defenses by upregulating pathogenesis-related gene expression through abscisic acid,ethylene,jasmonate acid,and salicylic acid signaling *** results highlighted that biocontrol agents promote plant health,from reconstructing beneficial microbial consortia to enhancing plant *** findings enrich our comprehension of the synergistic interplays between phyllosphere microbiota and plant immunity,offering potential enhancements in biocontrol efficacy for crop protection.

关键词： Biological control Metagenome Transcriptome Community structure Pathogen resistance

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Investigation of SiGe-on-Insulator Novel Structure

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Journal of Rare Earths 2004年第Z2期22卷 13-16页

作者： Lin Chenglu liu Weili An zhenghua Di Zengfeng Zhang Miao Shanghai Institute of Microsystem and Information Technology Chinese Academy of SciencesShanghai 200050China Shanghai SIMGUI Technology Co. LtdShanghai Jiading 201821China Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Shanghai SIMGUI Technology Co. LtdShanghai Jiading 201821China

SiGe-on-Insulator (SGOI) is an ideal substrate material for realizing strained-silicon structures that are very competing and popular in present silicon technology. In this paper, two methods are proposed to fabricate SGOI novel structure. One is modified Separation by Implantation of Oxygen (SIMOX) starting from pseuodomorphic SiGe thin film without graded SiGe buffer layer. Results show that two-step annealing can improve the cystallinity quality of SiGe and block the Ge diffusion in high temperature annealing. SGOI structure with good quality has been obtained through two-step annealing. The second method is proposed to achieve SGOI with high content of Ge. High quality strained relax SiGe is grown on a compliant silicon-on-insulator (SOI) substrate by UHCVD firstly. During high temperature oxidation,Ge atoms diffuse into the top Si layer of SOI. We successfully obtain SGOI with the Ge content of 38%, which is available for the growth of strained Si.

关键词： SGOI SIMOX SOI strained Si

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基于LM优化的车载全景影像绝对测量方法

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河南科技 2024年第7期51卷 5-9页

作者：曹君叶辰萌刘正华武汉城市职业学院湖北武汉430064 中国地震局地震研究所湖北武汉430071

【目的】为解决车载全景影像在智慧城市、智慧城管、智慧交通等领域中应用不足的问题,提出了一种基于LM优化的车载序列全景影像绝对测量的方法。【方法】首先,对待测目标点在全景影像上的成像过程进行分析,详细推导了目标点绝对坐标测... 详细信息

【目的】为解决车载全景影像在智慧城市、智慧城管、智慧交通等领域中应用不足的问题,提出了一种基于LM优化的车载序列全景影像绝对测量的方法。【方法】首先,对待测目标点在全景影像上的成像过程进行分析,详细推导了目标点绝对坐标测量的理论模型。其次,为解决该理论模型的优化求解问题,引入了对初值不敏感且收敛速度较快的LM算法,并对LM算法中的初值获取、函数构建、参数设置等问题进行了设计。最后,结合实际车载全景影像和目标点位实测数据,对所提的方法进行验证。【结果】该方法获得的目标点绝对坐标平面中误差和高程中误差分别为0.123 m和0.118 m,符合《城市测量规范》(CJJ/T 8—2011)中的相关要求。【结论】该方法能够有效获取全景影像范围内待测目标点的绝对坐标,从而为全景影像在城市部件普查、交通基础设施测量等领域的应用提供了可能。

关键词： LM优化车载全景影像绝对测量

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Enhanced photocatalytic activity of (La, N) co-doped TiO_2 by TiCl_4 sol-gel autoigniting synthesis

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Journal of University of Science and Technology Beijing 2007年第6期14卷 552-557页

作者： Zhongqing liu Yanping Zhou zhenghua Li Yichao Wang Changchun Ge Materials Science and Engineering School University of Science and Technology Beijing Beijing 100083 China

（La, N） co-doped TiO2 photocatalysts were synthesized using TiC14 sol-gel autoignidng synthesis （SAS） starting from a complex compound system of TiCl4-La（NO3）3-citric acid-NH4NO3-NHyH2O, in which the （La, N） co-doped process was accompushed in the formation of TiO2 nanocrystals. The prepared samples were characterized by using X-ray diffraction （XRD）, X-ray photoemission spectroscopy （XPS） and UV-vis diffuse reflectance spectra. The results indicated that nitrogen and lanthanum were incorporated into the lattice and interstices of titania nanocrystals, which resulted in narrowing the band gap and promoting the separation of photoexcited hole-electron pairs, respectively, and showing expected red-shifts and enhanced photocatalytic activity under visible light. The mechanism on nitrogen doping and enhancement in photocatalyfic activity of （La, N） co-doped titania by SAS was discussed in detail.

关键词： photocatalyst co-doping titanium dioxide sol-gel autoigniting synthesis photocatalytic activity

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浙江省地质灾害气象风险预警一体化建设的探索与实践

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中国地质灾害与防治学报 2024年第2期35卷 21-29页

作者：周诗凯刘正华余丰华朱浩濛黄丽佘恬钰浙江省地质院浙江杭州310007

地质灾害预报预警是有效防范地质灾害、减少人员伤亡的重要手段。自2003年开始实施以来,全国有80%的山区省、市、县开展了地质灾害气象预警工作。但这种省、市、县独立建设模式难以满足部省协同、市县联动、全域贯通的业务需求。文章介... 详细信息

地质灾害预报预警是有效防范地质灾害、减少人员伤亡的重要手段。自2003年开始实施以来,全国有80%的山区省、市、县开展了地质灾害气象预警工作。但这种省、市、县独立建设模式难以满足部省协同、市县联动、全域贯通的业务需求。文章介绍了浙江省地质灾害气象风险预警一体化建设:按照“省级预报到县、市级预报到乡、县级预警到村(点)”的工作原则,在趋势预测、每日预报、短临预报和实时预警与地质灾害防治业务一体化融合方面开展探索,初步建成了以“地灾智治”应用驾驶舱为可视化监管,以“地灾智防”APP为闭环手段的地质灾害全生命周期管控防治业务体系,形成了具有浙江特色的地质灾害预报预警数字化产品体系。

关键词：地质灾害等级预报风险预警一体化建设

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Moral property rights and harmonious society

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Ecological Economy 2007年第2期3卷 122-131页

作者： Xiang Hongqiao liu zhenghua School of Economics Zhongnan University of Economics and LawWuhan 430060P.R.China Hubei Institute for Nationalities Enshi 445000P.R.China

To build the harmonious society needs the effect of *** are various kinds of moral *** values can be divided into proper ones and improper ones according to whether the social benefit is bigger than the social cost of the moral *** former is helpful to the optimal allocation of resources and improve the formation of the harmonious society; while the latter is harmful to the optimal allocation of resource and bad to the formation of the harmonious *** proper and scientist moral values include： sustainable development view on ecology,fair,just and win win view on morality,credibility,right view on rich and poor,right view on consumption and so *** build the proper and scientific moral value,the more important way is building proper moral property rights institution by recognizing properly and constructing moral property rights besides legislation,setting up moral surroundings,valuing moral penetration,strengthening moral education etc.Harmonious society;Moral property rights;Moral value

关键词： Harmonious society Moral property rights Moral value

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Landslide Hazard and Risk Assessment on the Northern Slope of Mt. Changbai, China

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Acta Geologica Sinica(English Edition) 2008年第1期82卷 214-224页

作者： liu zhenghua ZHANG Yanbin Yoshiharu ISHIKAWA Hiroyuki NAKAMURA Zhejiang Geological Environmental Monitoring Station Zhejiang 310007 China Zhejiang Land Consolidation and Rehabilitation Centre Zhejiang 310007 China Tokyo University of Agriculture and Technology Tokyo 183-8509 Japan

Landslide hazard and risk assessment on the northern slope of Mt. Changbai, a well-known tourist attraction near the North Korean-Chinese border, are assessed. This study is divided into two parts, namely, landslide hazard zonation and risk assessment. The 1992 Anbalagan and Singh method of landslide hazard zonation （LHZ） was modified and used in this area. In this way, an Associative Analysis Method was used in representative areas to get a measure for controlling factors （slope gradient, relative relief, vegetation, geology, discontinuity development, weak layer thickness and ground water）. For the membership degree of factor to slope failure, the middle range of limited values was used to calculate LHZ. Based on an estimation of the potential damage from slope failure, a reasonable risk assessment map was obtained using the relationship of potential damage and probable hazard to aid future planning and prediction and to avert loss of life.

关键词： Landslide Hazard Zonation (LHZ) controlling factor Associative Analysis Method membership degree risk assessment tourism China

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Goldfish vsx1 inhibits chordamesoderm gene ntl expression at the dorsal midline

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Chinese Science Bulletin 2009年第8期54卷 1345-1353页

作者： liu zhenghua CHEN JinHui MA ShanShan TONG Ying LUO Chen College of Life Sciences Hunan Normal University Changsha 410081 China College of Life Sciences Zhejiang University Hangzhou 310058 China

vsx1(visual system homeobox-1),a homeobox gene originally identified from an adult goldfish retinal cDNA library,has been shown to regulate retina progenitor proliferation,differentiation and functional maintenance of bipolar cells in ***,in all the examined vertebrate species,vsx1 transcripts can be also detected at the early developmental stage,suggesting that it may play an important role in regulating early embryogenesis as ***,we investigated the function of vsx1 in early embryogenesis of goldfish(Carassius auratus) with both overexpression and gene knockdown *** was found that vsx1 overexpression specifically blocked dorsal midline structure for-mation and vsx1 knockdown led to disorganized dorsal midline ***-mount in situ hy-bridization revealed that the midline expression of ntl,a key regulatory gene for chordamesoderm,was repressed by vsx1 overexpression but enhanced in the vsx1 ***,VSX1 protein could bind ntl promoter directly and was sufficient to inhibit ntl promoter-driven reporter gene green fluorescence protein ***,these results suggested that vsx1 may act to repress ec-topic expression of ntl in neural progenitor cells to ensure neural tube development in a spatially coordinated pattern during early embryogenesis.

关键词：金鱼抑制基因中线早期胚胎发育绿色荧光蛋白同源盒基因 cDNA文库整体原位杂交

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