Advanced Materials Research Vols. 396-398

Abstract: Environmental pollution due to industrial emission is becoming a growing problem day by day and Oxides of Nitrogen (NOx) are one of the contributing factors in it. Researchers are in continuous efforts for finding out ways to control these NOx. Out of many, one of the ways to control these NOx is by controlling the volume of water in High Speed Diesel (HSD) used for power generation in Diesel generators (DGs). Water content in HSD provides oxygen for the formation of NOx. Research presented in this paper also revolves around the relation ship between the water contents of HSD and NOx emitted by the DGs. Relevant industrial data of water contents in HSD and NOx percentage in emissions has been collected from selected Industry in Pakistan the largest consumer good manufacturer in Pakistan and one of the largest Multi-national consumer goods manufacturer.

Abstract: potassium ionic sieve membrane was synthesized employing the secondary hydrothermal synthesis using tetrabutyl ammonium bromide as templates on the porous α-Al2O3 support.The zeolite membrane were characterized by XRD and SEM. The results show that the prepared membranes is potassium ionic sieve membrane, dense and continuous membrane could be obtained after crystallization synthesis was carried out at 423K for 12h and for three times.

Abstract: The objective of the work was to optimize the extraction of Hovenia dulcis Thunb. seed oil (HSO) by means of supercritical fluid extraction (SFE). Effects of pressure, temperature, time and CO2 flow rate on extract abilities of HSO were studied in this paper. Basis on the signal factor test, the orthogonal design was used to optimize the extraction conditions. Results showed that following conditions were optimal: pressure 40Mpa, temperature 40°C, time 120min, CO2 flow rate 9 kg/h. Extraction yield of HSO were 8.92%. Supercritical CO2 technology was a good extraction method for its higher yield and shorter time.

Abstract: Two method used in vehicle NVH improvement is discussed in this paper. General comparison is given as an introduction to the classical Transfer Path Analysis (TPA) and Operational Path Analysis (OPA). The different theory of TPA and OPA are presented to give a better understanding of these methods and highlight their capabilities. The limitation of each approach and points of attention are followed. Furthermore, the application of both methods is carried out to show the similarity and difference in results and illustrate the points mentioned before. Suggested conditions for each method are mentioned in the conclusion.

Abstract: To prevent eutrophication and to treat domestic wastewater effectively, the experiment of removing phosphorus from domestic wastewater was carried out using modified fly ash as an absorbent. The effects of fly ash particle diameter, fly ash dosing quantity, pH value, temperature, oscillating strength and adsorption time on phosphorus removal were studied. The results showed that when the fly ash size ranged from 160 mesh to 200 mesh, the fly ash dosing quantity was 25g/L, pH value was 3.5, the temperature was 50°C, the concentration of phosphorus in the domestic wastewater was 6.0 mg/L, the oscillating strength was 140r/min, and the adsorption time was 120 minutes, the removal efficiency of phosphorus could reach 94.5% and the concentration of phosphorus could reduce to under 0.5 mg/L.

Abstract: The treatment of soft soil foundation is a common but hot and difficult problem in the construction projects. Based on the reinforced treatment of abutment foundation in Fuyan Bridge and the hypothesized different treatment measures, settlement deformation of abutment foundation was calculated and analyzed by means of software ANSYS; variations of synthetic modulus for foundation soil and curves of settlement deformation of abutment foundation were obtained, which offers references to the design and construction of such projects.

Abstract: Given kinematics quantitative target and requirements to executive links of a planar linkage mechanism, regarded the distance between the point set of the quantitative target and the actual’s as a whole metrics approximate design requirements, and taken this metrics as kinematics design fitness function, according to multi-branch tree expression and random configuration method to create mechanical initial population made the mechanical population evolution towards the target requirements by the use of copy, crossover and mutation operators of genetic program. In the evolutionary process, inserted kinematics automatic analysis technique, design examples indicated that using a genetic program can search parallel in different mechanical configuration space and dimension space, automatically searched to such kinds of mechanisms approximate kinematics target and requirements, thus fulfilling the kinematics automatic design.

Abstract: Anionic polyacrylamide dispersions were prepared by dispersion polymerization in aqueous salt solutions. The effects of reaction conditions, such as salt concentration, molecular weight of stabilizers, on the micromorphology of the dispersions were investigated systematically by using biological photomicroscope. The results showed that the particle shape in stable dispersions were more regular, basically spherical or ellipsoidal. Stable anionic polyacrylamide dispersions could be obtained on condition that salt concentration was between 26%~30%, molecular weight of stabilizers between 1.760×10⁶~2.317×10⁶ g•mol^-1.

Abstract: This paper discusses the designing of I.C. engine test-bed laboratory’s general layout and its control system，puts forward the model of the I.C. Engine Test-Bed control system based on CAN-BUS. The system adopts the centralized management and decentralized control. Each I.C. engine test-bed is controlled by the master computer on the foundation of independent control. The system also adopts the standardization module design, easy to expand and to be used widely.

Abstract: Several kinds of new derivatives of N-substituted-4-(p-chlorophenoxy)acetamide and N-substituted-2,4-dichlorophenoxy acetamide were synthesized with methyl chloroacetate. The influence of solvent on the chlorination occurred in the benzene ring of phenoxy acetamide additives has been investigated by using sulfonyl chloride as chlorination agent. Result shows that the higher polarity of solvent is beneficial to the chlorination.