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重庆市农业科技创新能力评价研究

生产力研究 2024年第6期 43-48,F0003页

作者：曾琼万立志尹朝静马强重庆生产力促进中心(重庆市科学技术信息中心) 重庆401147 西南大学经济管理学院重庆400715 重庆市农业科学院重庆401329

根据农业科技创新内涵以及农业科技创新发展目标要求,从农业科技创新环境、投入、产出和贡献四个方面构建重庆市农业科技创新能力评价指标体系,并对2022年重庆市37个行政区县(不含渝中区)的农业科技创新能力进行评价和分析。研究发现重... 详细信息

根据农业科技创新内涵以及农业科技创新发展目标要求,从农业科技创新环境、投入、产出和贡献四个方面构建重庆市农业科技创新能力评价指标体系,并对2022年重庆市37个行政区县(不含渝中区)的农业科技创新能力进行评价和分析。研究发现重庆市农业科技创新的主要特征和短板,并从强化科研创新供给、提高农业科技成果量、发展数字农业农村、提高农业科技智慧度等5个方面提出提升重庆市农业科技创新能力的建议。

关键词：数实融合理论机理路径选择重庆市

Sensitive analysis of amino acids in injection liquor by reversed-phase HPLC

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Chinese Journal of Chemistry 1995年第2期13卷 163-168页

作者： SHANG, zh Yu, YN GuO, W JIANG, H zh.u, LM CHINESE ACAD SCI DALIAN INST CHEM PHYSDALIAN 116012PEOPLES R CHINA

A convenient derivatization method of amino acids with 1-fluoro-2,4-dinitrobezene as reaction reagent and a separation system were described. The derivative amino acids were separated on a specific chemically bonded phase column with a simple linear gradient elution consisting of aqueous buffer and methanol. The eluate was detected by common ultraviolet absorption detector at 360 nm. The detection limits of amino acids were as low as 10 picomole. This method has been successfully applied to assay amino acid injection liquor used in hospital. It has good reproducibility and precision. The procedures avoid the requirements of particular derivative equipment and analyzer employed in conventional amino acid analysis.

关键词： AMINO ACIDS PRECOLuMN DERIVATIZATION REVERSED PHASE SEPARATION uV ABSORPTION DETERMINATION

Fabrication of Silicon Quantum Wires by Conventional Silicon Processing

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High Technology Letters 1995年第1期1卷 25-27页

作者： Yi, Sh. Jianlin, L. Feng, W. Rong, zh. Ping, H. Shulin, G. Shunming, zh. Baohua, M. Youdou, zh. Nanjing univ Nanjing China

ultra fine silicon quantum wires with the Si/SiO2 heterointerface have been fabricated successfully by using reactive ion etching, anisotropic wet chemical etching and subsequent thermal oxidation. The cross-sectional image of scanning electron microscope shows the silicon quantum wires of high quality with the linewidth down to 20nm. The present method has many remarkable advantages, which is important to the study of low-dimension quantum physics and devices.

关键词： Quantum wire Silicon Silicon dioxide Silicon technique

Monitoring crustal movements in northern Tianshan Mountain based on GPS technology

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Geodesy and Geodynamics 2017年第3期8卷 155-159页

作者： A.V.Vilayev zh.Sh.zhantayev A.zh.Bibosinov JSC "National Center of Space Research and Technology" DTOO "Institute of lonosphere" Almaty 050020 Kazakhstan

Monitoring results for the period 2009-2014 by ten standard GPS stations allowed to determine the crustal movements of seismically active region in south-eastern Kazakhstan. Maps of movement velocity were made in geocentric coordinate system and in reference system of the Eurasian continent. GPS points displacements reflect the features of modern deformation processes that are notable in the high seismic activity region. The structure of the velocity field divergence qualitatively confirms major deformation in the sublatitudinal direction which is parallel to the main ridge of the northern Tianshan Mountain. The epicenters of earthquakes are in agreement with the border areas of compression -tension, as well as the allocated areas of multidirectional rotary motion. The conclusion is that GPS monitoring of the movements of the Earth＇s crust can be used to evaluate the territory＇s stress-strain state for the purpose of seismic zoning and seismic risk assessment.

关键词： GPS monitoring Earth movements Deformation Tianshan Mountain

Imaginary roots and weights for generalized Kac-Moody algebras

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Chinese Science Bulletin 1997年第15期42卷 1317-1318页

作者： Jin, YD Li, zh zhang, ZX Department of Fundamental Science North China Electric Power University Baoding China Department of Mathematics Hebei University Baoding China

THE symbols in this letter are the same as those of ref. [1] and we

关键词： root

Determination of the extragalactic-planetary frame tie from Earth orientation parameters

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Chinese Science Bulletin 1997年第4期42卷 315-318页

作者： Ping, JS Li, JL Jin, WJ Qian, zh Joint Radw Astronomy Research Laboratory Shanghai Observatory Chinese Academy of Sciences Shanghai China

PRLSENTLY there are three kinds of realization of conventional celestial reference frames (CCRFs), i. e. the optical frame, the planetary frame and the extragalactic radio frame. 'Though the CCRFs are high in precision, due to the difference in (ⅰ) the constants, parameters, formulae and force models used to define the frames; (ⅱ) the methods and techniques

关键词： earth orientation parameters (EOP) celestial reference frame tie.

Aequorin-Based Luminescence Imaging Reveals Stimulus-and Tissue-Specific Ca^2＋ Dynamics in Arabidonsis Plants

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Molecular Plant 2013年第2期6卷 444-455页

作者： Xiaohong zh Ying Feng Gaimei Liang Na Liu Jian-Kang zhua Department of Horticulture and Landscape Architecture Purdue University West Lafayette IN 47907 USA Shanghai Center for Plant Stress Biology and Shanghai Institute of Plant Physiology and Ecology Shanghai Institutes of Biological Sciences ChineseAcademy of Sciences Shanghai 200032 China

Calcium ion is a versatile second messenger for diverse cell signaling in response to developmental and environmental cues. The specificity of Ca^2＋-mediated signaling is defined by stimulus-elicited Ca^2＋ signature and down-stream decoding processes. Here, an Aequorin-based luminescence recording system was developed for monitoring Ca^2＋ in response to various stimuli in Arabidopsis. With the simple, highly sensitive, and robust Ca^2＋ recording, this system revealed stimulus-and tissue-specific Ca^2＋ signatures in seedlings. Cellular Ca^2＋ dynamics and relationship to Aequorin-based Ca^2＋ recording were explored using a GFP-based Ca^2＋ indicator, which suggested that a synchronous cellular Ca^2＋ signal is responsible for cold-induced Ca^2＋ response in seedlings, whereas asynchronous Ca^2＋ oscillation contributes to osmotic stress-induced Ca^2＋ increase in seedlings. The optimized recording system would be a powerful tool for the iden-tification and characterization of novel components in Ca^2＋ -mediated stress-signaling pathways,

关键词： Aequorin Case12 abiotic stress calcium Arabidopsis.

Comparison between hydrogen-transfer and fluoro-transfer reactions on the microcanonical unimolecular rate constants

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Chinese Journal of Chemistry 1995年第5期13卷 391-395页

作者： Feng, WL zhang, SW Wang, Y Wu, JN Li, zh BEIJING NORMAL uNIV DEPT CHEMBEIJING 100875PEOPLES R CHINA

The microcanonical rate constants for the hydrogen-transfer process of HCCF (reaction 7) and the fluoro-transfer process of FCCF (reaction 8) are carried out with tunneling correction and curvature correction. The results show that the tunneling effects and curvature effects on the rate constant of reaction 7 is quite different from that of reaction 8. The rate constants for different rotational states are also studied for these reactions.

关键词： microcanonical rate constant tunneling effect curvature correction

Sonar Image Processing System for an Autonomous underwater Vehicle(AuV)

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High Technology Letters 1995年第1期1卷 71-75页

作者： Wen, X. Yuling, W. Weiqing, zh. Academia Sinica Beijing China

Sonar image processing system is an important intelligent system of Autonomous un-derwater *** on TMS320C30 high speed DSP,it is used to realize sonar imagecompression and underwater object detections including obstacle recognition in real *** paper,the software and hardware designs of this system are introduced and the experi-mental results are given.

关键词： Autonomous underwater vehicle Sonar image processing Digital signal processor