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中国地质大学科学技术发展院刘志超（博士研究生）,宁伏龙等工程学院 Geophysical Research Letters, JAN 28 2018, Strength estimation for hydrate-bearing sediments from direct shear tests of hydrate-bearing sand and silt
粉土；砂直剪；测试；含水合物；沉积；地层力学；强度评估
2021/10/21
2018年1月28日，地球物理领域知名期刊《Geophysical Research Letters》刊发了中国地质大学工程学院宁伏龙教授研究团队的研究论文：基于粉土/砂直剪测试的含水合物沉积地层力学强度评估（Strength estimation for hydrate-bearing sediments from direct shear tests of hydrate-bearing sa...
Memories of the past contribute to prevention: photography as a direct means for public understanding of science
Memories Prevention Historical images
2015/8/26
There are thousands of ways to achieve a sustainable future for our Planet. Some of these follow high-value scientific research activities, while others simply aim to increase people’s awareness of wh...
Direct Torque Control System for Belt Conveyor Based on Improved Genetic Algorithms
Belt Conveyor Direct Torque Control (DTC) Genetic Algorithm (GA) Taboo Search
2011/12/14
The belt conveyor is the main transport equipments in coal field, and its controllable drive system directly impacts on the running safety reliability and cost in coal production. Starting speed is un...
Direct shock wave loading of Stishovite to 235 GPa: Implications for perovskite stability relative to an oxide assemblage at lower mantle conditions
perovskite stability ower mantle conditions Direct shock
2014/4/8
Pure stishovite and coesite samples with zero porosity
and dimensions appropriate for planar shock wave
experiments have been synthesized with multi-anvil highpressure techniques. The equation of st...
Chromate Removal by Dithionite-Reduced Clays: Evidence from Direct X-Ray Adsorption Near Edge Spectroscopy (Xanes) of Chromate Reduction at Clay Surfaces
Illite IMt-2 Kaolinite KGa-2 Montmorillonite Reduction Smectite Sorption SWa-1 SWy-1 XANES
2011/12/6
Abstract: Chromium(VI) in the environment is of particular concern because it is toxic to both plants and animals, even at low concentrations. As a redox-sensitive element, the fate and toxicity of ch...
Direct Imaging of Zirconia Pillars in Montmorillonite by Analytical Electron Microscopy
Clays Electron Energy-Loss Spectroscopy Elemental Mapping Energy-Filtered Imaging Image Analysis Materials Characterization
2011/12/7
Abstract: Analytical electron microscopy was used to confirm the location of pillars of zirconia in pillared montmorillonite. Data show that the pillared clay is of “high” quality, with surface areas ...
Thermal expansion of silicate liquids: Direct determination using container-based dilatometry
silicate liquids container-based dilatometry thermal expansion
2012/3/31
The expansivity of a silicate melt in the relaxed liquid state was obtained by direct dilatometric
measurement for the first time. During the measurement, the liquid sample resides within a metal
co...
Direct identification of the six polytypes of chlorite characterized by semi-random stacking
Direct identification chlorite characterized semi-random stacking
2012/3/31
This paper demonstrates that the six standard polytypes of chlorite, whose definitions are based on the orientation of the interlayer sheet and the position of the interlayer sheet on the 2:1 layer, c...
Direct observation of phase transitions in aluminate sodalite, Ca8[Al12O24](CrO4)2
Direct observation phase transitions aluminate sodalite Ca8[Al12O24](CrO4)2
2012/4/9
Transmission electron microscopy (TEM) wasused to study the structural changes that occur in aluminate sodalite, Ca8[AI12024](Cr04)2,whenit is heated withthe electron beam. Initially, a twinned orthor...
Magnesium site exchange in forsterite: A direct measurement by high-temperature 25Mg NMR spectroscopy
Magnesium site forsterite measurement high-temperature 25Mg NMR spectroscopy
2012/4/9
High-resolution 25MgNMR data are reported for a single crystal of pure forsterite (Mg2Si04) at temperatures to about 1400°C, which allow rates of exchange ofMgcations among specific sites in the struc...
Direct oxygen measurements of Cr-rich spinel: Implications for spinel stoichiometry
Direct oxygen measurements Cr-rich spinel Implications spinel stoichiometry
2012/4/6
Theavailability ofa synthetic multilayercrystal and accurately calibrated oxide and silicate standards makeit possible to usethe electron microprobefor precisea analysis ofspinel. Arequirement ofthe a...
Polyvinyl Alcohol-Clay Complexes Formed by Direct Synthesis
Clays Direct Synthesis Hectorite Hydrothermal Crystallization Polymer Clays Polyvinyl Alcohol PVA
2011/12/27
Abstract: Synthetic hectorite clay minerals were hydrothermally crystallized with direct incorporation of a series of five water-soluble polyvinyl alcohols (PVA) of molecular weights from 9000–146,000...
Direct High-Resolution Transmission Electron Microscopic Measurement of Expandability of Mixed-Layer Illite/Smectite in Bentonite Rock
Expandability Fundamental particle High-resolution transmission electron microscopy Illite/smectite Interstratification
2012/1/4
Samples of mixed-layer illite/smectite were investigated from a single bentonite bed zoned with respect to expandability from 90 to 30%. Chips of natural rocks were embedded in a resin, using procedur...
Transmission Electron Microscopic Study of Coexisting Pyrophyllite and Muscovite: Direct Evidence for the Metastability of Illite
Analytical electron microscopy Illite Muscovite Pyrophyllite Solid solution Thermodynamic stability Transmission electron microscopy
2012/1/4
Transmission electron microscopy has been used to characterize coexisting pyrophyllite and muscovite in low-grade metamorphosed pelites from Witwatersrand and northeastern Pennsylvania. The Witwatersr...
Direct Measurement of the Relation Between Swelling Pressure and Interlayer Distance in Li-Vermiculite
Double-layer theory Interlayer distance Swelling pressure Vermiculite X-ray diffraction
2012/2/1
To test the double-layer theory of swelling as applied to layer silicates, the interlayer separation, ? in a Li-saturated vermiculite from Grouse Creek, Utah, was measured as a function of the swellin...