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电子地图中动态注记方法的研究实现

小型微型计算机系统 2001年第11期22卷 1399-1401页

作者：赵秀忠刘修国中国地质大学湖北武汉430074 武汉中地图形软件公司湖北武汉430074

本文基于 MAPGIS讨论了在 GPS汽车导向系统的电子地图中汉字注记的信息缺损 ,注记压盖 ,即时显示及平滑浏览时的屏幕闪烁等问题 .采用一种快速而实用的方法——再分段求匀注记汉字 ,来解决信息缺损 ,注记压盖等问题 ;采用内存缓冲平滑... 详细信息

本文基于 MAPGIS讨论了在 GPS汽车导向系统的电子地图中汉字注记的信息缺损 ,注记压盖 ,即时显示及平滑浏览时的屏幕闪烁等问题 .采用一种快速而实用的方法——再分段求匀注记汉字 ,来解决信息缺损 ,注记压盖等问题 ;采用内存缓冲平滑移动图形策略解决了因地图实时移动而出现的屏幕闪烁问题 ,使地图注记能动态更新。

关键词：地理信息系统电子地图动态注记汽车导向系统

An accurately delineated Permian-Triassic Boundary in continental successions

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Science china Earth Sciences 2007年第9期50卷 1281-1292页

作者： YIN HongFu1, YANG FengQing2. YU JianXin2. PENG YuanQiao1, WANG ShangYan3.& ZHANG SuXin1 1 Laboratory of Biological and Environmental Geology, china {2. of Geosciences, Wuhan 43.074, china 2.State Key Laboratory of Geological Process and Mineral Resources, china {2. of Geosciences, Wuhan 43.074, china 3.Geological Survey of Guizhou Province, Guiyang 550011, china 1. Laboratory of Biological and Environmental Geology China University of Geosciences Wuhan 430074 China 2. State Key Laboratory of Geological Process and Mineral Resources China University of Geosciences Wuhan 430074 China 3. Geological Survey of Guizhou Province Guiyang 550011 China

The Permian-Triassic Boundary Stratigraphic Set (PTBST), characteristic of the GSSP section of Meishan and widespread in marine Permian-Triassic Boundary (PTB) sequences of South china, is used to trace and recognize the PTB in a continental sequence at Chahe (Beds 66f―68c). Diversified Permian plant fossils extended to the PTBST, and a few relicts survived above that level. Sporomorphs are dominated by fern spores of Permian nature below the PTBST, above which they are replaced by gymnosperm pollen of Triassic aspect. In the nearby Zhejue Section, the continental PTBST is charac- terized by the fungal 'spike' recorded in many places throughout the world. The boundary claybeds (66f and 68a,c) of the PTBST are composed of mixed illite-montmorillonite layers analogous with those at Meishan. They contain volcanogenic minerals such as β quartz and zircon. U/Pb dating of the upper claybed gives ages of 2.7.5 and 2.2.6 Ma for Beds 68a and 68c respectively, averaging 2.0 Ma. In con- trast to the situation in Xinjiang and South Africa, the sediment sequence of the Permian-Triassic tran- sition in the Chahe section (Beds 56―80) become finer upward. Shallowing and coarsening upward is not, therefore, characteristic of the Permian-Triassic transition everywhere. The occurrence of relicts of the Gigantopteris Flora in the Kayitou Fm. indicates that, unlike most marine biota, relicts of this pa- leophytic flora survived into the earliest Triassic. It is concluded that Bed 67 at Chahe corresponds to Bed 2. at Meishan, and that the PTB should be put within the 60-cm-thick Bed 67b④, now put at its base tentatively. This is the most accurate correlation of the PTB in continental facies with that in the marine GSSP.

关键词： Permian-Triassic Boundary, terrestrial sequence, U-Pb age, Chahe section, accuracy

DEGRADATION DUE TO ENERGY PULSE IN HIGH-ENERGY ZnO VARISTORS

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Journal of Central South university 1997年第2期9卷 113-116页

作者： Zhang Shugao Huang Baiyun Fang Xunhua (Powder Metallurgy Research Institute, Central South university of Technology, Changsha 410083. {2.)Ji Youzhang (Institute of Plasma Physics, chinese {3. of Sciences, Hefei 2.1}03., {2.) Powder Metallurgy Research Institute Central South University of Technology Changsha 410083 China Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China

The degradation phenomena due to the energy pulse in the high-energy ZnO varistors used for deexitation and overvoltage protection of hydroelectric generator are investigated. The energy pulse, obtained by releasing the energy stored in an inductor, can be equivalent to the combination of the DC field components and the energy component. The variations of the characterized voltages, nonlinear coefficients and pre-breakdown V-A characteristics, increase with the number of the applied energy pulse. The asymmetrical variations of the electric properties of the high-energy ZnO varistors after the energy pulse arise from the deformation of the double Schottky barriers due to the ion migration occuring in the depletion layer and in the grain boundary.

关键词： high-energy ZnO varistors energy pulse degradation V-A characteristics grain boundary barrier ion migration

The Influence of Fluctuated Soil Moisture on Growth Dynamic of Winter Wheat

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Agricultural Sciences in china 2002年第1期1卷 56-63页

作者： CHEN Xiao-yuan and LUO Yuan-pei( Institute of Resources and Environments, china Agricultural university, Beijing 100094 Agrometeorology Institute, {2. {3. of Agricultural Sciences, Beijing 100081 ) Institute of Resources and Environments China Agricultural University Beijing 100094 Agrometeorology Institute Chinese Academy of Agricultural Sciences Beijing 100081

Glasshouse and laboratory tests were carried out in 1996 - 1998 using winter wheat cultivars Beinong 6 as materials. The growth dynamics of the whole-wheat plant were analysed under constant and fluctuated soil water condition. The results revealed that water stress made the starting time of crop greatest growth phase(STCGGP) in advance, prolonged crop greatest growth phase(CGGP), decreased the rate of crop greatest growth (CGGR or CGRm), and as a result, the rate of dry matter accumulation was reduced and the growth of the crop was slowed down. Rewatering delayed STCGGP, shortened CGGP, increased CGGR, thus, the rate of dry matter accumulation had been boosted and the growth of the crop was accelerated. The growth rate, dry matter weight and grains yield of winter wheat were almost equal to the well-watered controls if they were rewatered under the condition of moderate water stress during the jointing stage.

关键词： Winter wheat Soil moisture Growth dynamics

Screening for bacteria degrading oxalic acid and potential for biocontrol of sclerotinia diseases

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Screening for bacteria degrading oxalic acid and potential f...

Enrichment and mobility of cadmium and other heavy metals in the area of the Three-Gorges Reservoir

植物保护2.世纪展望暨第三届全国青年植物保护科技工作者学术研讨会

作者： SY LIU~1 JK ZHANG~1 HM WANG~2.ZY XU~1 (1 Oil Crops Research Institute,chinese academy of Agricultural Science Wuhan 4{2.062.2.china Agricultural {{2. Beijing 100094)

Sclerotinia sclerotiorum(Lib) de Bary,a pathogen which can infect more than 400 plant species and cause serious losses of crop yield,produces a toxin——oxalic acid(OA) in pathogenesis and pure *** studies indicated that OA plays a important role in sclerotinia *** objectives of the studies are to screen microbes which utilize effectively OA and further clone its gene(s) for improvement of both plants for resistance and biocontrol *** detoxification of pathogenic toxin by plants or microbes is a new strategy for disease control.

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Acta Geochimica 2006年第S1期 122-123页

作者： Jiang TANG1, Yong LI2. Jiali LEI3. Shijie WANG1, Tangfu XIAO1 1 State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, chinese {2. of Science, Guiyang 550002. china 2.Institute of Earth Science, Chengdu {3. of Technology, Chengdu 610059, china 3.Geological Survey of Southeast Sichuan, Chongqing 40003., china

Identification of CD8+ cytotoxic T lymphocyte epitopes from porcine reproductive and respiratory syndrome virus matrix protein in BALB/c mice

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Identification of CD8+ cytotoxic T lymphocyte epitopes from ...

氮饥饿细基江蓠繁枝变型和孔石莼氨氮的吸收动力学特征

中国畜牧兽医学会畜牧兽医生物技术学分会暨中国免疫学会兽医免疫分会第八次学术研讨会

作者： ZHANG Wei-jun~(1,3.,LIN Yan~(1,3.,BAI Yu~(1,3.,TONG Tie-gang~(1,3.,WANG Qun~(1,3.,LIU Ni-hong~(1,3., LIU Guang-liang~(1,3.,XIAO Yi-hong~(1,3.,YANG Tao~(1,3.,BU Zhi-gao~(1,3.,TONG Guang-zhi~(1,3.,WU Dong-lai~(1,3.) (1.The Key Laboratory of Veterinary Public Health,Ministry of Agriculture,State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute,{12. academy of Agricultural Sciences,Harbin 150001,china 2.Shanghai Veterinary Research Institute,{12. academy of Agricultural Sciences,Shanghai 2.02.1,china 3.graduate School of {12. academy of Agricultural Sciences,Beijing 100081,china)

Twenty-seven nonapeptides derived from the matrix(M) protein of porcine reproductive and respiratory syndrome virus(PRRSV) were screened for their ability to elicit a recall interferon-γ(IFN-γ) response from the splenocytes of BALB/c mice following DNA vaccination and a booster vaccination with recombinant vaccinia virus rWR-PRRSV-M.

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海洋学报 2004年第2期26卷 95-103页

作者：刘静雯董双林中国海洋大学教育部水产养殖重点实验室

以氮饥饿海藻为材料,采用多瓶法和干扰法相结合的技术,测定两种海藻在不同起始浓度下不同时间间隔内的NH+4吸收率,对不同阶段的吸收率进行非线性回归分析,结果表明它们均符合饱和吸收动力学特征.最大吸收率和半饱和常数均随着吸收时间... 详细信息

以氮饥饿海藻为材料,采用多瓶法和干扰法相结合的技术,测定两种海藻在不同起始浓度下不同时间间隔内的NH+4吸收率,对不同阶段的吸收率进行非线性回归分析,结果表明它们均符合饱和吸收动力学特征.最大吸收率和半饱和常数均随着吸收时间的延长而降低.在整个吸收过程中,吸收曲线的初始斜率变化不大,这表明在低浓度下的吸收率不受短时间快吸收的影响而保持相对的稳定.同时两种海藻相比,在相应时间内的吸收动力学参数不同,孔石莼的最大吸收率、半饱和常数和初始斜率均大于细基江蓠繁枝变型.处于氮饥饿状态的两种海藻对NH+4-N的吸收存在以下3.时相:(1)起始短期的快吸收阶段;(2.内部营养盐浓度控制的吸收阶段;(3.外界营养盐浓度控制的吸收阶段.

关键词：吸收动力学氮饥饿海藻吸收率非线性回归分析多瓶法干扰法细基江蓠繁枝变型孔石莼

The Influence of Procedure Justice on Work Engagement:the Mediating Role of Organizational Commitment

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The Influence of Procedure Justice on Work Engagement:the Me...