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更新时间：2026.11.15

头条 滇中引水工程的介绍

滇中引水工程是云南省委、省政府的重大决策部署，渠首设计流量达每秒145立方米，输水总干渠线路全长663.9km。工程初拟以迪庆州德钦县金沙江奔子栏河段为取水水源，最终选择水源工程地...

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川滇桤木果实中总黄酮的含量测定

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目的:建立川滇桤木果实中总黄酮的含量测定方法。方法:采用紫外-可见分光光度法,以芦丁为对照品测定川滇桤木果实中总黄酮的含量。结果:芦丁在0.19~0.95 mg/mL范围内呈良好的线性关系,A=1.082 6C+0.049 7(r=0.999 6),平均加样回收率为99.6%,RSD为1.09%(n=6)。结论:该方法操作简便、快速、准确、重现性好,可作为川滇桤木果实中总黄酮的含量测定方法。

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数值流形方法及在川滇地区地壳运动研究中的应用(英文)

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页数： 5页

The numerical manifold method (NMM) can calculate the movements and deformations of struc-tures or materials. Both the finite element method (FEM) for continua and the discontinuous deformation analysis (DDA) for block systems are special cases of NMM. NMM has separate mathematical covers and physical meshes: the mathematical covers define only fine or rough approximations; as the real material boundary, the physical mesh defines the integration fields. The mathematical covers are triangle units; the physical mesh includes the fault boundaries, joints, blocks and interfaces of different crust zones on the basis of a geological tectonic background. Aiming at the complex problem of continuous and discontinuous de-formation across the Chinese continent, the numerical manifold method (NMM) is brought in to study crustal movement of the Sichuan-Yunnan area. Based on the GPS velocity field in the Sichuan-Yunnan area, a crustal strain and stress field is simulated and analyzed. Moreover, results show that the NMM is a more suitable method than DDA in simulating the movement of the Sichuan-Yunnan area. Finally, a kind of mechanism of crustal motion in the Sichuan-Yunnan area is discussed in the paper.

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