Experiments of flow conductivity closure stress of typical propping agent are done, propping agent short-term flow conductivity alteration index is defined, by this, the relation between fissure short-term flow conductivity and closure stress, it is close to exponential relation. 4. Establishing the mathematical simulator of hydraulic fractured well's production in a steady state, finding the relation curve between dimensionless flow conductivity and fracture penetration coefficient by means of calculation and analyses, it is the basis of hydraulic fracture. 5. Expatiating the importance of optimized hydraulic fracturing design in reservoir engineering, advancing the optimizing design method, fracture dimension can be calculated easily when the physical parameters are known. 6. Production rate decline standard curve of vertical fractured wells is achieved by mathematical simulation, when the flow pressure is certain , by asymptotic analyze, this decline curve is close to exponential relation.

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With the increase of the carbon dioxide density to enhance the impact on the wheat conductivity and the MAD density, the rise in the CO2 density causes the reduction of the exosmosis conductivity and the increase of the MDA content, the change of which is the same as the exosmosis conductivity.

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Thermal conductivity is measured by the transient hot-wire method, which shows that the thermal conductivity increases with the increase of nanofluid particle volume fraction and temperature. The thermal conductivity of 0.3vol% SiO2-water nanofluid increases by 11.5% at 25℃, while it increases by 46.5% at 50℃ when compared with water at the same temperatures.

采用瞬態(tài)熱線法測量納米流體的導(dǎo)熱系數(shù)999国产精品永久，結(jié)果表明：納米流體導(dǎo)熱系數(shù)的變化與納米顆粒體積分數(shù)和溫度的變化成正比，其中25℃時體積分數(shù)為0.3%的SiO2-水納米流體相對于水的導(dǎo)熱系數(shù)提高11.5%激情五月丁香婷婷，而在50℃時則提高46.5%欧美精品公开视频。

Which can be used to set up en irreducible water saturation interpretation model. The rock conductivity of brine saturated cores for six different salinity solutions was measured. The curve between rock conductivity and solution conductivity shows that there isn't additional clay conductivity.

在6種不同礦化度溶液下測量完全飽和溶液的巖心電導(dǎo)率，巖心電導(dǎo)率與溶液電導(dǎo)率的關(guān)系曲線表明h片在线观看视频免费播放，粘土礦物不存在附加導(dǎo)電性欧美成人人免费HD视频，阿爾奇公式仍可用于求取含水飽和度。

Furthermore, by using Natori theory on the field-effect transistor we study the current-voltage characteristics of deformed carbon nanotube field-effect transistors. For strain deformation, the conductivity of zigzag nanotube presents different characteristics with the remainder of n and 3. For armchair nanotubes, the conductivity does not change with the strain parameter. However, for torsion deformation, the conductivity rapidly increases, specially for the armchair tube. It has many obviously different conductivity behaviors between zigzag tubes and armchair tubes.

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First by testing the practical multilayer insulation in a cryogenic tanker, which is the carilometer in my paper,some affecting factors on multilayer insulation are analysed, then by using the low-temperature and vacuum environment caused by multilayer insulation, the effective thermal conductivity of multiple fiber paper with 5 layers is tested.Through Newton interativemethod,an empirical formula is deduced to computer the thermal conductivity of fiber paper,The errors between experimental thermal conductivity and the calculated conductivity by empirical formula are below10%,so the formula of fiber conductivity can be applied to practical enginnering.

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The difference of bulk density of coastal soils took an effect on infiltration rate and diffuse rate. The infiltration rate and diffuse rate of coastal soils which bulk density was small were big. The water transmitting experiment of coastal soils showed that the saturated conductivity of different layers in soil profile were great, and the saturated conductivity of undisturbed soil was highly higher than that of disturbed soil. The saturated conductivity of coastal soils embanked earlier was lower than that of coastal soils embanked later. Under different water content, the unsaturated conductivity of coastal soils had a great change and the bulk density had an effect on unsaturated conductivity. The soil with a low bulk density had a high unsaturated conductivity. Chlorine ion moved in coastal soil was an inert ion. The distribution of CU in soil was definite and repeated, which is no relation with the time and velocity of infiltration. The concentration of infiltration solution and the texture of coastal soils had no apparent effect on solute movement synthetic dispersion coefficient, while bulk density took an apparent effect on solute movement synthetic dispersion coefficient. Synthetic dispersion coefficient of coastal soils increased as bulk density decreased.

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In first, a new short time formula of one dimension heat conduction differential equation, based on the theory of one dimension transient method, is presented for thermophysical property measurement of wood. The result of testing on red pine and larch wood arc satisfied by new method.In succession, the relationship between heat conductivity of wood and moisture, density, porosity, temperature and grain is studied experimentally in the range from 25 to 100℃. The result shows that, the heat conductivity is in direct proportion to density. but in inverse proportion to porosity. The heat conductivity of air-dried wood increased probably linear with the temperature rising. And that heat conductivity along the grain of wood is higher than that cross the grain. The former is 1.8 or 2 times of the latter.

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Determined electric conductivity of Rare Earths salt ErCl 3国产AV日产AV、DyCl 397精品视频共享总站、NdCl 3 and YCl 3 in H 2O at 293K, using formula calculated the molar conductivity of Rare Earths salt in H 2O , and discussed the effect of the electric conductivity and the molar conductivity of Rare Earths salt in H 2O with concentration at 293

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