脱硫活性焦水洗再生过程实验研究

对5种活性焦水洗再生前后的脱硫性能进行实验研究，通过比表面积（BET）、X射线光电子能谱（XPS）方法表征水洗再生工艺对活性焦孔隙结构和表面化学性质的影响，揭示影响活性焦水洗再生性能的关键因素。结果表明:活性焦脱硫硫容的大小和水洗再生率的高低没有直接关系；微孔比表面积较大的活性焦脱硫性能较好，中大孔孔容较大的活性焦水洗再生率较高，同时具备较大的微孔比表面积和中大孔孔容结构的活性焦适宜水洗再生工艺；活性焦表面极性含氧官能团含量越高水洗再生效果越好；活性焦AC5经过6次水洗再生循环，微孔中的硫酸经过多次累积后可以被水洗出，稳定再生率保持在45%~50%，最适用于活性焦水洗再生工艺。     

MMS在中国市场的成功运营之道

MMS作为移动通信运营商最近推出的一类业务新品．受到了众多国外手机厂商的热情追捧。MMS在国内市场的成长空间有多大?手机厂商的对策是什么?本文试图运用SWOT战略分析矩阵及三点效用模型对MMS手机的市场进入机会及厂商的营销策略进行研究，旨在探讨MMS在中国市场的成功运营之道。     

布帮鞋无浆贴合工艺技术

本工艺是对原有工艺的改进，突破了原有布帮鞋不能采用无浆贴合的局限性，对原有工艺中的不足有了很大的改进，提高了生产效率，改善了鞋子外观质量，增加了鞋子的美观性。     

Boundary element analysis of thermal stress intensity factors for interface griffith and cusp cracks

The thermal stress intensity factors for interface cracks of Griffith and symmetric lip cusp types under vertical uniform heat flow in a finite body are calculated by the boundary element method. The boundary conditions on the crack surfaces are insulated or fixed to constant temperature. The relationship between the stress intensity factors and the displacements on the nodal point of a crack-tip element is derived. The numerical values of the thermal stress intensity factors for an interface Griffith crack in an infinite body are compared with the previous solutions. The thermal stress intensity factors for a symmetric lip cusp interface crack in a finite body are calculated with respect to various effective crack lengths, configuration parameters, material property ratios and the thermal boundary conditions on the crack surfaces. Under the same outer boundary conditions, there are no appreciable differences in the distribution of thermal stress intensity factors with respect to each material property. However, the effect of crack surface thermal boundary conditions on the thermal stress intensity factors is considerable.     

2.0 Mt/a渣油加氢脱硫装置新氢压缩机性能标定

介绍了中国石化茂名分公司 2 .0Mt/a渣油加氢脱硫装置中的 4M80 30 /2 2 2 0 0 BX型新氢压缩机的特点、技术特征及标定情况。采用国际通用标准对压缩机气体组成、容积流量、轴功率、进排气压力和进排气温度等指标进行了测定。标定表明 ,该机组设计方案合理 ,运转平稳 ,性能指标达到设计要求 ,较好的满足了工艺操作的需要     

Finite constants: characterizations of a new decidable set of constants

Constant propagation, the replacement of program terms which represent a unique value at run time by their values, is a classical program optimization method. In spite of being treated for years, constant propagation still has been in the unsatisfactory phase of heuristics. We enhance the known constant propagation techniques to obtain an algorithm which is optimal for programs without loops. Fundamental is the introduction of a new decidable set of constants, the finite constants. This set has two different characterizations: a denotational one, which directly specifies our iterative algorithm and an operational one, which delivers the completeness or optimality of this algorithm for programs without loops. The algorithm is implemented in a commercial compiler project.     

A prolog based expert system for the allocation of quality assurance program resources

The worldwide proliferation of fraudulent materials has brought about the need for a new approach to the control of purchased material quality. Nuclear power, defense, aerospace and many other industries are affected by the supply of poor quality clones that presume to be original replacement parts. Safety considerations abound as these highly defective materials are used in systems that are critical to the preservation of human lives. Commonly utilized quality assurance programs have not effectively stopped the influx of fraudulent materials. These programs fail to concentrate inspection efforts on materials and inspection attributes that would effectively prevent the acceptance of fraudulent materials. herein a solution is presented to this problem in the form of an expert system application. Information commonly available in industry is formulated into a knowledge based system wherein advisories are given to the user regarding key purchased material receipt inspection strategies.     

Computerized facility layout design

The paper describes a computerized facility layout designer, COMLAD II, for plant layout development. Besides developing an efficient layout, COMLAD II has useful features which allow fixing the departments, changing the shape of the departments and changing the length and width dimensions of the overall layout.     

Analysis of thin walled structures using the boundary element method

In this article the direct boundary element formulations of stretching and bending plate problems are combined together to solve thin walled structures and other similar frames. The final system is obtained by assuming each individual plane structural element as a subregion. After the necessary transforms of these equations they can be combined together taking into account the displacement compatibility and equilibrium conditions.