活性白云粉生产工艺及其物化性能研究   总被引：1，自引：0，他引：1  

贾建业  汤艳杰  王辅亚  王杨传  宁平  王建成  魏俊峰 《矿物学报》2001,21(3):439-442

活性白云粉（ABP）是在白云岩经过破碎、细粉碎、表面改性的基础上得到的一种新型改性功能填料。本文利用河南辉县市的拍石头和张村两地产出的白云岩作为实验原料，对其表面改性的实验方法、改性剂选择及用量、改性条件及改性效果等方面进行了一定的探讨，并且对改性前后的白云石粉体的粒度、比表面积等性能及红外光谱特征做了对比研究。生产工艺和物性测试研究表明：活性白云粉代替轻质碳酸钙作橡胶填料前景广阔；与轻钙相比，活性白云粉的粒度不够均匀，经优化和改善生产工艺条件，可望进一步提高其应用价值。  相似文献   

海气耦合气侯模式的依时解          下载免费PDF全文

封国林  曹鸿兴 《应用气象学报》1996,7(2)

运用量子力学方法，精确地求出了海气耦合随机－动力模式的依时解．对依时解的分析表明：当气候系统处于基态时，系统的行为呈布朗运动形式，由此从理论上证明了Ｈａｓｓｅｌｍａｎｎ关于随机气候模式建立的立足点．当系统处于第一激发态时，系统运动呈随时间衰减的形式；在一定条件下则为周期振荡，主周期长度为２．３年．最后将结果用来讨论二氧化碳浓度倍增时的气候影响．  相似文献   

A COUPLING THREE DIMENSIONAL BAROCLINIC MODEL OF BIWA LAKE AIR-WATER SYSTEM     

《地理学报(英文版)》1996,(3)

I.IntroductionTherearealotofstudiesdealingwithhydrodwiaAncsoflakes,numericalsimulationoflakecurrentsystemst5,7,lO,l31,andwiti1windsystemsoverlakesandnumericalsimulationontheland-lake/seaormountain-valleybreeze[4,6,8].Usually,ti1emodelsinti1eatmosphericboundarylayerandinlakewaterweresimulatedseParately.InfaCt,theprocessesintheatmosphericboundarylayeroverlakesandti1eprocessesinthelakewaterareinteraCtedstronglyeachoti1er.Collecteddatashow,thatalmoStalllargelakes,marginalseas,estuariesandlagoon…  相似文献   

B-polarization induction in two thin half-sheets coupled to the mantle by a conducting crust—II. Solution by the mode-matching method, the fields above the conductors, and example results     

T. W. Dawson 《Geophysical Journal International》1996,124(2):577-590

The mode-matching method is used to obtain an exact analytical solution to the problem of B -polarization induction in two adjacent thin half-sheets, lying on a conducting layer that is terminated by a perfect conductor at finite depth. These components of the model represent, respectively, the Earth's conducting surface layers, crust, and mantle. In dimensionless variables, the model has three independent parameters, these being the two thin-sheet conductances and the layer thickness. The mode-matching solution obtained in this paper is shown to be identical lo that derived via the Wiener-Hopf method in a companion paper (Dawson 1996), and so provides additional verification of that solution. As was shown in the companion paper, the solution for the present model contains, as special limiting cases, those for three models considered earlier by various authors. The second part of the present paper addresses the solutions for the electric fields in the non-conducting half-space above the conductors, which represents the atmosphere. In the final part, sample numerical calculations are presented to illustrate the solution.  相似文献   

Influence of viscoelastic coupling on the axial rotation of the Earth and its fluid core     

M. Lefftz  H. Legros 《Geophysical Journal International》1992,108(3):725-739

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The dynamics of thin shells with variable viscosity and the origin of toroidal flow in the mantle   总被引：4，自引：0，他引：4  

Neil M. Ribe 《Geophysical Journal International》1992,110(3):537-552

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Propagation of surface waves on a laterally heterogeneous earth: asymptotic solution of the two-dimensional wave equation     

Fred F. Pollitz 《Geophysical Journal International》1992,111(1):67-78

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关于岩石导热性野外测定方法的研究     

江海 《地质与资源》1992,29(3):282-288

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A　Coupled　General　Circulation　Model　for　the　Tropical　Pacific　Ocean　and　Global　Atmosphere   总被引：3，自引：0，他引：3  

Zhang Ronghu  Zeng Qingcun  Zhou Guangqing  Liang Xinzhong 《大气科学进展》1995,12(2):127-142

On the basis of Zeng’s theoretical design, a coupled general circulation model (CGCM) is developed with its characteristics different from other CGCMs such as the unified vertical coordinates and subtraction of the standard stratification for both atmosphere and ocean, available energy consideration, and so on. The oceanic component is a free surface tropical Pacific Ocean GCM between 30oN and 30oS with horizontal grid spacing of 1o in latitude and 2o in longitude, and with 14 vertical layers. The atmospheric component it a global GCM with low-resolution of 4o in latitude and 5o in longitude, and two layers or equal man in the vertical between the surface and 200 hPa. The atmospheric GCM includes comprehensive physical processes. The coupled model is subjected to seasonally-varying cycle. Several coupling experiments, ranging from straight forward coupling without flux correction to one with flux correction, and to so-called predictor-corrector monthly coupling (PCMC), are conducted to show the existence and final controlling of the climate drift in the coupled system. After removing the climate drift with the PCMC scheme, the coupled model is integrated for more than twenty years. The results show reasonable simulations of the annual mean and its seasonal cycle of the atmospheric and oceanic circulation. The model also produces the coherent interannual variations of the climate system, manifesting the observed El Ni?o / Southern Oscillation (ENSO).  相似文献   

硫铝酸盐水泥浆性能调节方案   总被引：2，自引：0，他引：2       下载免费PDF全文

顾元威  王桂敏 《探矿工程》1995,(6):22-23

讨论了水灰比、抖浆水温和有机处理剂对硫铝酸盐水泥浆性能的影响，提出了该水泥浆性能的调节方法。  相似文献