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星载材料极弱剩磁测量方法研究

哈尔滨工程大学学报 2024年

作者：孟立飞徐超群陈金刚肖琦刘超波周斌张铁龙 1.北京卫星环境工程研究所 2.哈尔滨工业大学(深圳)空间科学与应用技术研究院 3.中科院国家空间科学中心 4.奥地利科学院空间研究所北京卫星环境工程研究所哈尔滨工业大学(深圳)空间科学与应用技术研究院中科院国家空间科学中心奥地利科学院空间研究所

为解决科学探测卫星星载材料微弱磁性测量难题，本文提出了一种卫星部件极弱剩磁的测量方法，并研制了测量系统。利用屏蔽技术去除外界磁场干扰，在屏蔽系统内搭建了测量系统，使用零场原子磁力仪采集旋转试件的磁场频谱信息，通过小波... 详细信息

为解决科学探测卫星星载材料微弱磁性测量难题，本文提出了一种卫星部件极弱剩磁的测量方法，并研制了测量系统。利用屏蔽技术去除外界磁场干扰，在屏蔽系统内搭建了测量系统，使用零场原子磁力仪采集旋转试件的磁场频谱信息，通过小波多分辨分析方法处理，得到试件的磁特征数据。研究表明：本文方法可有效提取极弱剩磁信号，且系统稳定度优于1×10-3nT/30min，磁场分辨率优于1×10-3nT，磁矩提取分辨量级可达10-6A·m2.为整星磁洁净控制和空间磁场高精度探测提供了途径。

关键词：卫星材料极弱剩磁磁屏蔽测量系统频谱小波多分辨分析磁洁净

新质生产力与体育科技创新的交互促进机理及路径

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西安体育学院学报 2024年

作者：黄谦史浩男王启隆丁建岚郭轶群 1.武汉体育学院体育工程与信息技术学院 2.西安体育学院体育经济管理学院 3.西安体育学院体育神经管理与社会行为决策研究中心 4.波士顿大学工程学院武汉体育学院体育工程与信息技术学院西安体育学院体育经济管理学院西安体育学院体育神经管理与社会行为决策研究中心波士顿大学工程学院

新质生产力作为激发体育事业高质量发展的强大动能,其与体育科技创新双向交互驱动是必然要求。从协同性视角分析了新质生产力与体育科技创新双向交互作用机制:从外在协同看,新质生产力驱动体育科技创新;从内在协同看,体育科技创新反哺... 详细信息

新质生产力作为激发体育事业高质量发展的强大动能,其与体育科技创新双向交互驱动是必然要求。从协同性视角分析了新质生产力与体育科技创新双向交互作用机制:从外在协同看,新质生产力驱动体育科技创新;从内在协同看,体育科技创新反哺新质生产力;从空间协同看,新质生产力与体育科技创新双向交互的载体多样;从目标协同看,交互价值指向体育事业高质量发展。在剖析新质生产力与体育科技创新交互驱动困境的基础上,提出具体促进路径:完善催生新质生产力的体育科技创新体制机制;推动体育科技与体育产业深度融合;优化体育科技创新的资源配置;加快体育科技创新型人才培育。

关键词：新质生产力体育科技创新交互作用

Experimental study of ore gabbro liquid immiscibility

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Science china Earth Sciences 2005年第4期48卷 496-505页

作者： SANG Zunan1,2. XIA Bin1, ZHOU Yongsheng3 & JIN Zhenmin4.1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 51064., china 2. wuhan {2., wuhan 4.0072. china 3. Institute of Geology, china Seismological Bureau, Beijing 10002., china 4. Faculty of Earth Sciences, china university of geosciences, wuhan 4.0074. china Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China wuhan university Wuhan China Institute of Geology China Seismological Bureau Beijing China Faculty of Earth Sciences China University of Geosciences Wuhan China

In this paper, the authors present the results of a preliminary experimental study on partial melting of fine-grained gabbro, Panzhihua, Sichuan Province, china. Experiments were conducted under (confining) pressure ranging from 4.0 to 500 MPa and temperature of 900— 12.0℃. The results show that the initial melt is distributed along grain boundaries and triple junctions. Liquid immiscibility phenomena are noted in the melt with two compositional different melt phases, i.e. matrix and sphere phases. The matrix phase is relatively rich in Si, Al and K, and is depleted in Mg, Fe, Ca, Na and Ti, whereas the sphere phase shows opposite trends. The calculation of the melt free energy indicates that the liquid immiscibility is governed by the rule of thermodynamics, as the liquid immiscibility would result in the decrease in free energy of the melt system. The field relationships suggest that the liquid immiscibility may have played an important role in the generation of ore magma of Panzhihua V-Ti magnetite ore deposit. This study thus provides experimental constraints on the mechanism of the formation of V-Ti magnetite deposite.

关键词： partial melting, experimental study, gabbro, liquid immiscibility, ore formation mechanism.

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黄芩根腐病生防菌的筛选鉴定及生防作用测定

山西农业大学学报(自然科学版) 2024年

作者：王莉王雅竹张如王娟娟韩立荣 1.咸阳职业技术学院仪祉农林学院 2.陕西省天然林保护工程管理中心(陕西省林业基金管理中心) 3.陕西省林业调查规划院 4.西北农林科技大学林学院西北农林科技大学林学院陕西省林业调查规划院陕西省天然林保护工程管理中心(陕西省林业基金管理中心) 咸阳职业技术学院仪祉农林学院

[目的]茄病镰孢菌（Fusarium solani）是引起黄芩根腐病的主要病原菌之一，该病害已成为制约陕西地区黄芩生产的瓶颈问题，限制了黄芩种植产业的进一步发展。本研究旨在从土壤中分离筛选具有优良拮抗活性的生防菌以期为黄芩根腐病的防... 详细信息

[目的]茄病镰孢菌（Fusarium solani）是引起黄芩根腐病的主要病原菌之一，该病害已成为制约陕西地区黄芩生产的瓶颈问题，限制了黄芩种植产业的进一步发展。本研究旨在从土壤中分离筛选具有优良拮抗活性的生防菌以期为黄芩根腐病的防治提供新思路、新方法。[方法]利用平板对峙法筛选具拮抗活性生防菌株，进一步结合生长速率法、盆栽药效试验和田间药效试验测定该菌株对黄芩根腐病的生防效果，此外还通过形态学和分子生物学方法对其进行鉴定。[结果]从陕西省商洛市健康黄芩根际土壤中分离筛选获得两株茄病镰孢菌高效拮抗菌HQ-53和HQ-75，初步将两株菌鉴定为灰橙链霉菌（Streptomyces griseoaurantiacus）和巴西链霉菌（Streptomyces brasiliensis），活性测定结果表明，其无菌发酵液对茄病镰孢菌菌丝生长抑制率分别为65.3%和77.5%，对孢子萌发抑制率分别为4..5%和55.4.。扫描电镜观察发现HQ-53和HQ-75菌株发酵液处理后茄病镰孢菌菌丝均出现不同程度的肿胀和生长畸形。进一步的盆栽和田间药效试验表明，HQ-53和HQ-75株菌均能显著降低根腐病的发生，3次药后田间防效分别达到了67.3%和56.2.。[结论]本研究分离获得的两株链霉菌HQ-53和HQ-75对黄芩根腐病有优良拮抗活性，具有开发成生防菌剂的应用潜力，也为其他茄病镰孢菌引起的根腐病的防控提供了新型微生物资源。

关键词：黄芩根腐病拮抗菌生物防治

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基于平面相约束的三维砂体构型建模方法

中国石油大学学报(自然科学版) 2024年

作者：邬德刚吴胜和刘常妮岳大力范峥 1.中国石油大学(北京)人工智能学院 2.中国石油大学(北京)地球科学学院 3.中国石油大学(北京)油气资源与工程全国重点实验室 4.北京瑞马能源科技有限公司中国石油大学(北京)人工智能学院中国石油大学(北京)地球科学学院中国石油大学(北京)油气资源与工程全国重点实验室北京瑞马能源科技有限公司

将平面微相分布引入到基于一维井资料的三维砂体构型建模过程中，提出基于平面相约束的三维砂体构型建模方法。以不同微相类型单砂体为建模对象，引入平面相约束各个单砂体的平面分布范围及形态特征，通过在平面分布范围内确定砂体顶、... 详细信息

将平面微相分布引入到基于一维井资料的三维砂体构型建模过程中，提出基于平面相约束的三维砂体构型建模方法。以不同微相类型单砂体为建模对象，引入平面相约束各个单砂体的平面分布范围及形态特征，通过在平面分布范围内确定砂体顶、底微构造面的方式建立三维砂体构型模型。使用数学模型优化单砂体微构造面，利用叠置关系优化砂体间的接触关系。结果表明，该方法能很好地表征不同微相类型单砂体，在刻画砂体复杂形态特征等方面具有较大优势，能有效刻画不同微相类型单砂体的复杂平面几何形态，良好地体现单砂体的剖面形态特征，合理表征不同构型单元间的复杂接触关系。

关键词：三维砂体构型建模平面相井资料微构造面

Transport network and flow mechanism of shallow ore-bearing magma in Tongling ore cluster area

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Science china Earth Sciences 2006年第4期49卷 397-407页

作者： DENG Jun1,2. WANG Qingfei1,2., HUANG Dinghua3 , WAN Li4. YANG Liqiang1,2.& GAO Bangfei1,2.1. State Key Laboratory of Geological Processes and Mineral Resources,{4., Beijing 100083, china 2. Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, china university of Geo- sciences, Beijing 100083, china 3. Faculty of Earth Sciences,{4., wuhan 4.0074. china 4. School of Mathematics and Information Science, Guangzhou university, Guangzhou 5104.5, china State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing China Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education China University of Geosciences Beijing China Faculty of Earth Sciences China University of Geosciences Wuhan China School of Mathematics and Information Science Guangzhou University Guangzhou China

Abundant studies revealed that shallow intrusions of the Yanshanian epoch resulted in the mass mineralization of the Tongling region. Various evidences showed there existed a concealed magma chamber at ?10 km depth in the middle part of this region during Yanshanian epoch, from which the ore-forming magma was generated and then transported to the superficial layer. Yet the transport network and flow mechanism of the shallow ore-bearing magma, the key problem associ- ated with ore-forming process, was relatively little focused on. Integrate analysis of structural me- chanics, statistical fractal and geological facts suggested that NE trending high-angle fold-related thrust faults and the tessellated basement ones served as the main pathways for the shallow magma’s transporting, moreover, the saddle void spaces among adjacent strata in the folds upon this fault system provided the place for magma’s emplacement. So the folds in the upper part and faults in the lower part of the upper crust constituted the fluid’s transport and emplacement network. During the deformation of geologic body with multi-layer structure, the layers in the upper part tended to fold when received the jacking stress from the lower part, while the lower one inclined to fault undergoing loads of the upper part. And the producing probability of this structure assemblage was highly in- creased in the condition, such as in the Tongling area, that the mechanic rigidity of the lower layers was stronger than that of the upper ones. For the pre-existence of fluid-conducting network, the top magma with high volatile in the magma chamber transported rapidly to the superficial layer in dyking pattern, located in the void spaces of folds, filled and reconstructed them. The sudden drop of pres- sure caused the fluid unmixing from the magma and mass ore-forming elements concentration. Pulse activity of the dyking may be the principal reason why magmatic bodies in the Tongling area were spatially-temporally con

关键词： Tongling, structural network, magma intrusion, fractal, dyke.

Carbon isotope composition of the Lower Triassic marine carbonates, Lower Yangtze Region, South china

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Science china Earth Sciences 2006年第3期49卷 225-241页

作者： ZUO Jingxun1,2. TONG Jinnan3, QIU Haiou4.& ZHAO Laishi3 1. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 2.0008, china 2. Henan Institute of Geological Survey, Zhengzhou 4.0007, china 3. State Key Laboratory of Geological Processes and Mineral Resources at{2., wuhan 4.0074. china 4. Faculty of Material Sciences and Chemical Engineering,{2., wuhan 4.0074. china Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing China Henan Institute of Geological Survey Zhengzhou China State Key Laboratory of Geological Processes and Mineral Resources at china university of geosciences Wuhan China Faculty of Material Sciences and Chemical Engineering China University of Geosciences Wuhan China

Studies on three Lower Triassic sections located on the shallow water platform, the deep water slope and in the deep water basin in the Lower Yangtze Region, South china, show the similar trend of carbon isotope evolution. Biostratigraphic correlations among the Lower Triassic sections on the basis of standard conodont zones indicate that three negative shifts occurred in the Griesbachian, the Smithian and the late Spathian stages respectively, and one distinctly positive shift occurred in the early Spathian stage. Trend of carbon isotope evolution of the Lower Triassic reflects some significant changes in the global carbon cycle. Moreover, δ 13C background values are intensively controlled by palaeogeographic environment. In general, δ 13C values from deep-water slope carbonates are lighter than those from carbonate platform and heavier than those from deep-water basin carbonates. The positive carbon isotope excursion may be induced by a significant amount of organic carbon burial in marine sediments and increase in primary productivity. The large negative carbon isotope excursions during the Early Triassic in Lower Yangtze Region are interpreted to relate to volcano eruptions based on tuffaceous claystone interlayers observed near the Permian-Triassic boundary, the Induan- Olenekian boundary and the Lower Triassic-Middle Triassic boundary.

关键词： Lower Triassic, carbon isotope compositions, palaeogeography, volcanic eruptions, Lower Yangtze Region.

An experimental study of dehydration melting of phengite-bearing eclogite at 1.5―3.0 GPa

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Chinese Science Bulletin 2009年第10期54卷 2090-2100页

作者： LIU Qiang1,2. JIN ZhenMin1,2.& ZHANG JunFeng1,2.1 State Key Laboratory of Geological Processes and Mineral Resources, china university of geosciences, {4. {2. china 2.Faculty of Earth Sciences, china university of geosciences, {4. {2. china State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan China Faculty of Earth Sciences China University of Geosciences Wuhan China

Dehydration melting experiments were performed on ultrahigh-pressure eclogite from Bixiling in the Dabie orogen at 1.5―3.0 GPa and 800―950℃ using piston cylinder apparatus. The results show that (1) eclogite with ~5% phengite started to melt at T≤800―850℃ and P = 1.5―2.0 GPa and produced about 3% granitic melt; (2. the products of dehydration melting of phengite-bearing eclogite vary with temperature and pressure. Fluid released from dehydration of phengite and zoisite leads to partial melting of eclogite and formation of plagioclase reaction rim around kyanite at pressures of 1.5―2.0 GPa and temperatures of 800―850℃; (3) phengite reacted with omphacite and quartz and produced oligoclase, kyanite and melt at elevated temperatures. Oligoclase is the primary reaction product produced by partial melting of phengite in the eclogite; and (4. the dehydration melting of phengite-bearing eclogite at pressures of 1.5―3.0 GPa and temperatures ≥900 ℃ results in formation of garnets with higher molar fraction of pyrope (37.67 wt.%―4..94.wt.%). Potassium feldspar and jadeite occur at P = 2.4.3.0 GPa and T≥900 ℃ , indicating higher pressure and fluid-absent conditions. Our results constrain the solidus for dehydration melting of phengite-bearing eclogite at pressures of 1.5―3.0 GPa. Combining experi- mental results with field observations of partial melting in natural eclogites, we concluded that phengite-bearing eclogites from the Dabie-Sulu orogen were able to partially molten at P = 1.5―2.0 GPa and T = 800―850℃ during exhumation. The ultrahigh-high pressure eclogites would have experienced partial melting in association with metamorphic phase transformation under different fluid conditions.

关键词：超高压榴辉岩脱水熔融实验水白云母反应压力部分熔融大别造山带苏鲁造山带反应产物

Analytical method of Cr stable isotope and its application to water pollution survey

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Chinese Science Bulletin 2010年第7期55卷 664-669页

作者： GAO YongJuan 1,2.3,MA Teng 4.5,LING WenLi 1,2.LIU CunFu 4.5 & LI Li 4.5 1Faculty of Earth Science,china university of {2.,wuhan 4.0074.china 2.tate Key Laboratory of Geological Processes and Mineral Resources,china university of {2.,wuhan 4.0074.china 3 Graduate School,china university of {2.,wuhan 4.0074.china 4.Biogeological and Environmental Geology Laboratory of Ministry of Education(china university of {2.) ,wuhan 4.0074.china 5 Sino-Hungary Joint Laboratory of Environmental Sciences and Health,china university of {2.,wuhan 4.0074.china Faculty of Earth Science China University of Geosciences Wuhan China State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan China Graduate School China University of Geosciences Wuhan China Biogeological and Environmental Geology Laboratory of Ministry of Education (china university of {2.) Wuhan China Sino-Hungary Joint Laboratory of Environmental Sciences and Health China University of Geosciences Wuhan China

High Cr(VI) concentration is a potential serious risk to environment and ecologic ***,it is essential to effectively monitor Cr contamination in water systems and scientifically evaluate its evolution trend.A new method of in-situ tracer technique by Cr isotopic analysis for quantitatively estimating Cr-contamination and its regional evolution in natural waters as well as a case application are reported in this *** on documented literatures,an experimental procedure for chemical separation and purification of Cr in water samples and its analytical method for Cr isotopic measurement by thermal ionization mass spectrometry(TIMS) are *** samples collected around a chemical factory in Hubei Province were analyzed by this *** samples showδ53Cr values ranging from-1.7‰to 7.3‰and an elevating trend with an increasing in distance from the sampling site to pollution source.A functional correlation following Rayleigh fractionation law was established between sample'sδ53Cr value and its extent of Cr *** study suggests that Cr isotopic analysis is an effective method to reveal the spatial distribution and its evolution trend of Cr contamination in the regional water *** is thus helpful to assessing the self-purifying ability of local water system according to Cr isotopic fractionation.

关键词：铬(VI) 水污染调查稳定同位素应用同位素分析供水系统演变趋势示踪技术