For the importance of concrete structure durability, this paper analyses such factors as carbonation performance and air permeability performance of concrete that reduce concrete durability.
55)、粉煤灰掺量(0，20％，30％，40％，50％)、水泥品种(525~#硅酸盐水泥和425~#矿渣水泥)对混凝土气滲性的影响程度；研究粉煤灰的合理掺量，找出粉煤灰在满足工程需要时的最佳掺量；探求28天抗压强度与碳化深度和气渗性之间是否存在关系；验证国内应用的预估碳化深度的公式X=at~b；寻求混凝土碳化深度与气渗性之间的关系。
Greigite in relict sediments, East China Sea continental shelf: implication for hydrocarbon seepage;
结合本区新生代油气构造圈闭和残留沉积物可溶铁Fe3+/Fe2 +比值异常的分布 ,用油气渗漏解释了SIRM异常及硫复铁矿的成因 ,从而认为SIRM异常对深部油气藏具有指示意义 。
Coaction of wind pressure and thermal pressure in air infiltration calculation;
空气渗透计算中风压与热压的叠加问题
Analysis and calculation of the orientation correction factor for air infiltration;
空气渗透朝向修正系数的分析与计算
Nomographic method for air infiltration calculation of highrise buildings;
高层建筑空气渗透线算图的编制与使用
Preparation of PVA/PPESK Membrane for Vapor Permeation;
PVA/PPESK蒸气渗透膜的研制
Based on researches of vapor permeation separation of ethanol - water mixtures via modified alumina membranes, this paper optimizes the model equations of capillary condensation mechanism for membrane separation of binary gas mixtures which can calculate the permeability of binary gas mixtures accurately and established the.
本文以改性氧化铝膜对乙醇-水物系的蒸气渗透分离过程为研究对象,优选出了二元气体在毛细管冷凝膜分离过程中的组分渗透系数的计算模型;建立了多孔陶瓷膜的传质模型,对蒸气渗透分离过程的模拟证实了该模型的可靠性。
The applications of pervaporation, vapor permeation, gas separation and faciliated membrane transportation process in petrochemical industry are briefly introduced.
通过几个例子介绍了渗透气化、蒸气渗透、气体分离和促进传递等膜分离技术在石油化工领域中的原料纯化、产品分离及末端处理等环节中的应用。
Research on the dielectric barrier discharge nitrogen nitriding at atmospheric pressure have consumedly progressed.
利用介质阻挡放电进行常压氮气渗氮研究取得突破性进展。