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基于Schema路径分析的XML数据库存储策略

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计算机科学 2003年第8期30卷 69-72页

作者：朱震左春中国科学院软件研究所北京100080

With XML standards playing more and more important role at information exchanges in data management,the XML database storing strategy which supports huge amount XML data control from bottom layer of database hasbecome the key part of fields such as content management. This article proposes an efficiently XML storing strategyfrom the perspective of constraint schema of XML instance based on XML Schema path analysis.

关键词：数据库存储策略 XML Schema 路径分析数据文件

Synthesis and Crystal Structure of [Zn（Hpdc）2.MeOH）2.·bpy

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Synthesis and Crystal Structure of [Zn（Hpdc）2（MeOH）2]·b...

中国化学会全国第十二届大环第四届超分子化学学术讨论会

作者： Li Li-jun Sun Wen-hua Li Ying (College of chemistry & Environmental Science, Hebei University Baoding, 071002. institute of chemistry, the chinese academy of sciences, beijing 100080 College of chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000)

＜正＞ The colorless crystals of [Zn（Hpdc）2.MeOH）2.·bpy （1, pdc = pyridine-2.5-dicarboxylate） were prepared from H2.dc, bpy （bpy = 4,4’-bipyridine） and ZnSO4·7H2. in a DMF/MeOH solution. Single-crystal X-ray diffraction analysis indicates that it crystallizes in the triclinic system, space group P-1 with a = 6.054（1） A, b = 8.480（2. A, c = 13.2.9（3） A,α= 102.2.（3）°,β= 96.06（3）°,γ= 91.30（3）°, V= 658.7（2. A3, Z= 1, DC = 1.558 g/cm3. The data was collected by Rigaku Mercury CCD, 1 = 0.71073 A. The structure was solved by direct methods with final R = 0.0482.and Rw= 0.12.9 for 2.86 reflections with I＞2.（I）. In this structure

关键词： Complex Hydrogen bond X-ray structure

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中国东部地区的壳-幔过渡带结构

地球物理学报 2018年第3期61卷 845-855页

作者：孙伟家符力耘魏伟林羿唐清雅中国科学院地质与地球物理研究所中国科学院地球与行星物理重点实验室北京100029 中国科学院地球科学研究院北京100029 中国石油大学(华东)地球科学与技术学院山东青岛266580 中国科学院地质与地球物理研究所中国科学院页岩气与地质工程重点实验室北京100029

莫霍面是地壳和上地幔的边界,但莫霍面并不是一个简单的"面",而是一个反映地壳和地幔物质交换、相互作用等动力学意义的"过渡带".本文综合深地震反射、宽角地震折射和高温高压岩石物理实验结果,确定壳-幔过渡带的地震P波速度变化范围为6... 详细信息

莫霍面是地壳和上地幔的边界,但莫霍面并不是一个简单的"面",而是一个反映地壳和地幔物质交换、相互作用等动力学意义的"过渡带".本文综合深地震反射、宽角地震折射和高温高压岩石物理实验结果,确定壳-幔过渡带的地震P波速度变化范围为6.8~7.5km·s-1.在克拉通等构造活动稳定地区壳-幔过渡带内的速度梯度强且壳-幔过渡带厚度薄,而在造山带等构造活动区域壳-幔过渡带内的速度梯度弱且壳-幔过渡带厚.中国东部地区的壳-幔过渡带的平均厚度约为5~10km,在四川盆地下方最薄(<5km),而在华北克拉通中部造山带下方的壳-幔过渡带最厚(~30km).综合地球化学结果,华北中部巨厚壳-幔过渡带主要是幔源岩浆的底侵作用和堆晶作用而形成.

关键词：壳-幔过渡带地震波传播层析反演地震光照成像底侵作用

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飞秒激光分离同位素的模拟实验研究

物理学报 2002年第5期51卷 1081-1086页

作者：陈正林张杰滕浩张军董全力中国科学院物理研究所光物理实验室北京100080

利用飞秒激光与铜镍材料作用 ,在不同条件下得到了铜镍材料的分离 ,分离比可达 30 % .分析认为 ,激光等离子体中的自生轴向磁场和环形磁场在同位素的分离过程中可能起着相反的作用 ,二者相互竞争 .不同的磁场构形将对同位素分离产生不... 详细信息

利用飞秒激光与铜镍材料作用 ,在不同条件下得到了铜镍材料的分离 ,分离比可达 30 % .分析认为 ,激光等离子体中的自生轴向磁场和环形磁场在同位素的分离过程中可能起着相反的作用 ,二者相互竞争 .不同的磁场构形将对同位素分离产生不同的结果 ,因此。

关键词：飞秒激光等离子体同位素铜镍材料自生磁场分离模拟实验研究

Eolian origin of the Miocene loess-soil sequence at Qin'an,China:evidence of quartz morphology and quartz grain-size

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Eolian origin of the Miocene loess-soil sequence at Qin'an,C...

汽车电器设备监测与诊断系统——基于CAN总线控制网络

中国科学院地质与地球物理研究所2.06学术年会

作者： LIU Jinfeng~1,GUO Zhengtang~(2.1),QIAO Yansong~(3,1),HAO Qingzheng~1 & YUAN Baoyin~1 institute of Geology and Geophysics,chinese {2. of sciences,beijing 10002.,China 2.SKLLQG,institute of Earth Environment,chinese {2. of sciences,Xi’an 710075,China 3.institute of Geomechanics,chinese {2. of Geological sciences,beijing 100081,China

Grain-morphology and grain-size distributions of the quartz fraction from the QA-I loess-soil sequence are examined,and compared with those of the typical eolian deposits of Quaternary age from the Xifeng *** of the quartz grains from QA-I section have irregular and angular shapes which are highly similar to those of the Xifeng Quaternary eolian samples,and also to those of the Quaternary and Pliocene eolian deposits ***-size analyses show that the quartz fraction is dominated by the silt fraction2.μm. These features are characteristic of eolian dust ***-size analyses on both quartz and bulk samples consistently indicate a pattern of coarser grain-size in loess and finer grain-size in soils,also similar to that of the Quaternary loess-soil *** suggest that the Miocene paleosols are accretionary soils formed in monsoon *** quartz morphological features and grain-size distributions therefore provide new evidence of an eolian origin of the Qin’an Miocene sequences.

关键词： Miocene loess-paleosol sequence quartz grain scanning electron microscopy grain size

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计算机工程与应用 2005年第30期41卷 207-210页

作者：李婧于冬清中国科学院沈阳自动化研究所

该系统针对汽车工业领域的种种特性,在自行开发的汽车车身CAN总线电子控制系统的基础上,以W ***嵌入式操作系统为核心实现了对汽车上电器设备的实时监控与诊断。这种基于CAN总线技术开发的监控系统具有成本低,诊断速度快,系统稳定性强... 详细信息

该系统针对汽车工业领域的种种特性,在自行开发的汽车车身CAN总线电子控制系统的基础上,以W ***嵌入式操作系统为核心实现了对汽车上电器设备的实时监控与诊断。这种基于CAN总线技术开发的监控系统具有成本低,诊断速度快,系统稳定性强等优点,具有较高的实用价值。

关键词： *** CAN总线电器设备监控

Meteorological control on CO_2.flux above broad-leaved Korean pine mixed forest in Changbai Mountains

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Science China Earth sciences 2005年第Z1期48卷 116-122页

作者： GUAN Dexin, WU Jiabing, YU Guirui, SUN xiaomin, ZHAO xiaosong, HAN {2.jie & JIN Changjie {2. of Applied Ecology, chinese academy of sciences, Shenyang 110016, China {2. of Geographic sciences and Natural Resources Research, chinese academy of sciences, beijing 100101, China institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

The impacts of temperature, photosynthetic active radiation (PAR) and vapor pressure deficit (VPD) on CO2.flux above broad-leaved Korean pine mixed forest in the Changbai Mountains were studied based on eddy covariance and meteorological factors *** results showed that, daytime CO2.flux was mainly controlled by PAR and they fit Michaelis-Menten equation. Meanwhile VPD also had an influence on the daytime flux. Drier air reduced the CO2.assimilation of the ecosystem, the drier the air, the more the reduction of the assimilation. And the forest was more sensitive to VPD in June than that in July and August. The respiration of the ecosystem was mainly controlled by soil temperature and they fit exponential equation. It was found that this relationship was also correlated with seasons; respiration from April to July was higher than that from August to November under the same temperature. Daily net carbon exchange of the ecosystem and the daily mean air temperature fit exponential equation. It was also found that seasonal trend of net carbon exchange was the result of comprehensive impacts of temperature and PAR and so on. These resulted in the biggest CO2.uptake in June and those in July and August were next. Annual carbon uptake of the forest ecosystem in 2.03 was -184 gC. m-2.

关键词： CO2 flux, soil temperature, PAR, broad-leaved Korean pine mixed forest.

Surface-targeted functionalization of nickel-rich cathodes through synergistic slurry additive approach with multi-level impact using minimal quantity

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Nano Research 2024年第1期17卷 333-343页

作者： jing Zhang Jiapei Li Longhao Cao Wenhua Cheng Ziyin Guo Xiuxia Zuo Chao Wang Ya-Jun Cheng Yonggao Xia Yudai Huang State Key Laboratory of chemistry and Utilization of Carbon Based Energy Resources College of ChemistryXinjiang UniversityUrumqi 830017China Ningbo institute of Materials Technology&Engineering Chinese Academy of SciencesNingbo 315201China School of Materials Science and Engineering Tongji UniversityShanghai 200240China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

LiNi0.8Co0.1Mn0.1O_(2.(NCM811),a Ni-rich layered oxide,is a promising cathode material for high-energy density lithium-ion batteries(LIBs).However,its structural instability,caused by adverse phase transitions and continuous oxygen release,as well as deteriorated interfacial stability due to excessive electrolyte oxidative decomposition,limits its widespread *** address these issues,a new concept is proposed that surface targeted precise functionalization(STPF)of the NCM811 cathode using a synergistic slurry additive(SSA)*** approach involves coating the NCM811 particle surface with 3-aminopropyl dimethoxy methyl silane(3-ADMS),followed by the precise deposition of ascorbic acid via an acid-base *** slurry additives induce the formation of an ultra-thin spinel surface layer and a stable cathode–electrolyte interface(CEI),which enhances the electrochemical kinetics and inhibits crack *** STPF strategy implemented by the SSA approach significantly improves the cyclic stability and rate performance of the NCM811 cathode in both half-cell and full-cell *** work establishes a promising strategy to enhance the structural stability and electrochemical performance of nickel-rich cathodes and provides a feasible route to promote practical applications of high-energy density lithium-ion battery technology.

关键词： nickel-rich cathode slurry additive lithium-ion battery cathode–electrolyte interface ascorbic acid phase transition

SEDIMENTARY CHARACTERISTICS OF CONGLOMERATES IN THE jingGU-ZHENYUAN BASIN,SOUTHWESTERN YUNNAN,CHINA AND THEIR TECTONIC IMPLICATIONS

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Scientia Geologica Sinica 1997年第2期 10-17页

作者： Liu Shanyin( beijing Graduate School, China University of Mining and Technology, beijing, 100083) Zhong Dalai and Wu Genyao ({2. of Geology, chinese academy of sciences, beijing, 10002.

ＳＥＤＩＭＥＮＴＡＲＹＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＣＯＮＧＬＯＭＥＲＡＴＥＳ桑危裕龋牛剩桑危牵牵眨冢龋牛危伲眨粒危拢粒樱桑危樱希眨裕龋祝牛樱裕牛遥危伲眨危危粒危茫龋桑危粒粒危模裕龋牛桑遥裕牛茫裕希危桑茫桑... 详细信息

ＳＥＤＩＭＥＮＴＡＲＹＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＣＯＮＧＬＯＭＥＲＡＴＥＳ桑危裕龋牛剩桑危牵牵眨冢龋牛危伲眨粒危拢粒樱桑危樱希眨裕龋祝牛樱裕牛遥危伲眨危危粒危茫龋桑危粒粒危模裕龋牛桑遥裕牛茫裕希危桑茫桑停校蹋桑茫粒裕桑希危覶XＳＥＤＩＭ?..

关键词：粒粒 BASIN,SOUTHWESTERN jingGU-ZHENYUAN 桑希危危