Showing papers in "Journal of the Hebei Academy of Sciences in 2006"

Synthesis and performance research of polyaspartic acid graft copolymers

Abstract: Polyaspartic acid graft copolymers containing different content hydroxy were synthesized.Their performances of inhibiting calcium carbonate and calcium phosphate,dispersing ferric oxide were tested.As a result,scale inhibition rate of the agent on calcium carbonate was 100% with a dosage of 8 mg/L and the mole ratio of hydroxy and polysuccinimide 0.2.Inhibition rate of the agent on calcium phosphate was 98.2% with a dosage of 8mg/L and the mole ratio of hydroxy and polysuccinimide 0.8.The performance of dispersing ferric oxide was the best with a dosage of 30mg/L and the mole ratio of hydroxy and polysuccinimide 0.8.When the mole ratio of hydroxy and polysuccinimide is 0.8,the all-around performances were the best.

Cyclic redundancy checks in USB

Abstract: The mathematical basis behind CRC in USB is described.VB programs to generate these CRCs are provided and two examples are used to clear up possible ambiguous areas.

An algorithm to compute the span of the T-Colorings of multigraphs

Abstract: The T-colorings of multigraphs is a more practical case of T-colorings of graphs where interference may occur on different level.A multigraph G can be partitioned into K distinct sets,so G is represented as G(V,G_0,G_1,G_2,……,G_(K-1)).A T-coloring of G(V,G_0,G_1,G_2,……,G_(K-1)) is a function f satisfying that it is simultaneously a T(i)-coloring of G_i for all i,i.e.,so that for i=0,1,……,K-1,{x,y}∈E(G_i)｜f(x)-f(y)｜T(i).The order of a T-coloring f of G is the number of distinct values of(f(x)),x∈V(G).The span of a T-coloring f of G equals max｜f(x)-f(y)｜,where the maximum is taken over all vertex in V(G).The minimum order,and minimum span,where the minimum is taken over all T-colorings of G,are denoted by X_T(G),and sp_T(G),respectively.Several previous results of the span of simple graphs and multigraphs are showed,and a new algorithm to compute sp_T of multigraphs is presented,furthermore the bound of the span of a special multigraph and the algorithm of sp_T(K_n) are discussed.

Design of fuzzy control system for greenhouse

Abstract: A fuzzy control of temperature and humidity which is designed for the characteristic of greenhouse environment control is mainly introduced,the hardware structure of greenhouse control system is explained,and the fuzzy control rules are presented.The testing results prove that the control scheme is effective.

Advances in FCC gasoline desulfurization technologies

Abstract: With the gradually strictly of the environmental disciplines,the requirement for the quality of gasoline is getting higher.The method of reducing gasoline sulfur is considered to be an effective means for improving air quality.The desulfurization technology has become a key technology in various oil refinery enterprises.Sulfur compounds in gasoline come mainly from FCC(Fluid Catalytic Cracking),researching and developing of FCC gasoline desulfurization technology is very important.At present,technologies of reducing sulfur content of FCC gasoline including catalytic cracking desulfurization,FCC gasoline hydrodesulfurization,biodesulfurization,solvent extraction desulfurization,plasm and photochemical desulfurization,adsorption desulfurization and oxidative desulfurization.FCC gasoline desulfurization technologies at home and abroad were reviewed in this paper.

Intelligent decision support system based on CBR & MAS for traffic accident disposing

Abstract: According to the characters of traffic accident disposing,an architecture of intelligent decision support system(IDSS) for traffic accident disposing based on CBR(Case-based Reasoning) and MAS(Multi-base Agent System) is designed.The key technologies are discussed,such as knowledge express,integrated reasoning mechanism based on CBR,generalized models and so on.The system provides new method and thinking for the distributed and complex IDSS.

Status and progress on the magnetic water treatment for anti-scaling

Abstract: This paper summarizes the status and progress on the magnetic water treatment for anti-scaling,the ap- plication of magnetization water treatment in boiler and industrical water treatment is introduced.

An algorithm of feature subset selection based on genetic algorithm

Abstract: Feature subset selection is one of the important research issues in the field of artificial intelligence.Especially,in the past few years it has received considerable attention from machine learning and data mining.In this paper,an algorithm of feature subset selection based on genetic algorithm was proposed.It was proved by experimental results that the convergence and the stability of this algorithm are adequately achieved.

Application and progress of mutation breeding method of microbial drugs producing strain

Abstract: The original strains producing microbial drugs are always low.To meet the requirement of industrial pro- duction it is necessary to improve their characters by mutation breeding method.Some physical and chemical muta- tion breeding methods with their application were introduced in detail and some screening methods to obtain high yield mutants were reviewed.