Advanced Materials Research Vols. 466-467

Abstract: Through the reservoir of Chang 2 member in Zhifang area, Zhidan oilfield is typical of low porosity and low permeability reservoir rocks, using casting thin sections, scanning electron microscopy and physical analysis, etc., starting with the reservoir characteristics of Chang2 member, we have understood its causes and characteristics of low permeability. Using sequential indicator simulation and based on the target body method, we established the head of the construction of the reservoir model in Chang 2 member, using the sequential Gaussian simulation method combined with phase control principle, a model of reservoir properties in this area was established, Getting a high quality reservoir and field development and deployment of later development and further adjustments to tap the potential pratical guidance.

Abstract: An efficient synthesis of the reactive phosphorus flame retardant had been developed based on triazine. The stepwise synthesis of the functionalized compound 7 was presented. The chemical structure of the product was investigated with 1H NMR and elemental analysis while the thermal stability was studied by TG analysis. The reaction mechanism of 7, which was synthesized from the compound 4 and 6, was investigated using the density functional theory (DFT) of quantum chemistry. At the GGA-PW91/DND level, the geometry optimizations of the reactant and the product were performed, which showed that the calculated results was agreed with that of the experiment.

Abstract: Currently, the best known algorithm for factoring RSA modulus is the General Number Field Sieve. Through the software optimized implementation of GNFS with RSA-768, we extracted nine main calculation components from the lattice sieve. Detail descriptions and comprehensive analysis of the properties about calculation, memory and communication to the nine components were given in this paper, which makes it possible to use of a variety of computing platforms, such as CPU, FPGA, CELL, and GPU etc, to accelerate the realization of GNFS.

Abstract: Through the Ordos basin sample with Triassic Yanchang formation Chang 2 member sedimentary facies research and analysis, the use of deterministic modeling and the theory of stochastic modeling, using PETREL software, the establishment of a three-dimensional visualization of the study area Chang 2 member geological reservoir facies model, the model and geological interpretation in the whole match, a true reflection of the sedimentary characteristics of the study area, the numerical simulation for the latter part of remaining oil and provide a geological basis. Sand distribution model based on a clear understanding of sand microfacies characteristics distribution in the plane and space, the combination of relations, proved in the study area is mainly sand flat on the NE - SW band distribution, the distributary channel facies under control the trend of the sand body, in the same succession of small rivers within the good level, migration is not swinging, with micro-facies stability.Chang2 member channel development , is the favorable oil and gas accumulation zones.

Abstract: The decision tree algorithm is a kind of approximate discrete function value method with high precision, construction model of classification of noise data is simple and has good robustness etc, it is currently the most widely used in one of the inductive reasoning algorithms in data mining, extensive attention by researchers. This paper selects the decision tree ID3 algorithm to realize the standardization of lumber level division, to ensure the accuracy of the lumber division, while improving the partition of speed.

Abstract: The computation of grain burning surface regression plays a very important role in the internal ballistic performance evaluation of solid rocket motor, however, the traditional methods such as geometry-based one could not handle the self-intersection and characteristic geometric element disappearing problems. This paper presents an effective and efficient framework to simulate 3D grain burning surface regression with level set method which is combined with Fast Marching technique to constrain the calculation area only around the burning surface. At last, a typical grain example is given by our framework to verify our method’s effectiveness and efficiency.

Abstract: Boric acid (H3BO3) was an inexpensive, efficient and mild catalyst for the synthesis of n-butyl salicylate from salicylic acid and n-butanol, the esterifcation process conditions were optimized, the experimental results showed that the new process used small amount of boric acid catalyst, got higher target product yield, thus reduced the cost of production.

Abstract: Coal liquefaction is the available, adoptable method of relieving the energy crisis from crude oil supply in large scale. The coal type and react activity are hot research. In this paper, From the SPSS (Statistical Product and Service Solutions) data correlation analysis and hierarchical clustering graph about the macerals respond to coal liquefaction yield, all the correlation coefficients determine the liquefying activity of submacerals. It shows that every liquefaction intendancy is agreed with the maceral inherent petrology property, and these views have been found in previous study. The results indicated that by means of SPSS method, we can take investigation when there is not proper experiment condition. Compared with painstaking seperating-maceral experiment and the impossible separation to submacerals, it may be a simple, accurate, comprehensively, completely and practically method in a sense.

Abstract: Considering the control problem of circulating water system in the power plants with pure delay, inertia, and sensitivity to the environmental temperature, this paper applies the fuzzy algorithm to adding medicament control in circulating water system. The main procedure of fuzzy control algorithm consists of fuzzification, fuzzy inference and defuzzification. The fuzzy input and output variables are chosen as seven classes. Then, according to the actual operation situations and the expert experiences, the fuzzy rules are determined in the form of table. The effectiveness of the proposed fuzzy control method is proved by some practical examples.

Abstract: The porous UHMWPE were prepared by wet process and biaxial stretching. The scanning electron microscopy (SEM) experimental results indicated that there were two discernible components: microfibril bundles and microfibril networks in the porous biaxial UHMWPE. The higher draw ratio along the longitudinal direction (the machine direction) contributed more to orientation of the UHMWPE fibrils. Along the transverse direction, fibrils were torn, and more microfibrils network with larger size formed. The mechanical test results showed that along the longitudinal direction, the UHMWPE exhibited higher tensile strength and lower elongation-at-break.