Search results

3D Geological Modeling (Deposit Scale) for Granite Rock-Mass in Yuku Area, Luanchuan,China Jinxiang Miao1,2, a, Caixia Li1,2, Jin Qu1,2, Xin Chen1,2, Hong Wang1,2, Qinchang Song1,2 1.Henan Key Laboratory for Geological Metallogeny and Resource Utilization, Zhengzhou, Henan, 450001, China 2.Henan Institute of Geological Survey, Zhengzhou, Henan, 450001, China achinhsangmiao2@163.com Keywords: Shape of granite rock-mass; T Low magnetic-anomaly zone;3D (three-dimension) Geological Modeling(Deposit Scale) ;Yuku area,Luanchuan,China.
These models need multivariate, multi-dimensional geological data (including geology, mineral deposits, geological engineering, geophysics, geochemistry, remote sensing and so on.) [2-3].
Acknowledgments We are grateful to Professor Changhai Yan, Professor Gongwen Wang, Dr.Jiangwei Han, Senior-engineer Zhongguang Xia, Luanchuan scientific research personnel, Geophysical-Exploration personnel, et al.
Ba: submitted to Journal of Advanced Materials Research(2013), Vol.734 , p.257-264
J.Y: submitted to Journal of Value engineering(2014), Vol.33(2), p.294-295, in Chinese

In this process, gelation time and gel strength are the keys related to the success of conformance treatment.
Furthermore, it was established the functional relationship of permeability with dynamic gelation from gelation time and gel strength. 2 Experiments 2.1 Materials The polymer employed in these researches was classical partially hydrolyzed polyacrylamide (HPAM), whose molecular weight is 1.2×107 and the degree of hydrolysis is 22%.
Kuala Lumpur, Malaysia: Society of Petroleum Engineers, 2003
SPE Reservoir Engineering, 1991, 6(1): 77-83
SPE Reservoir Evaluation & Engineering, 2000, 3(3): 204-208

Structural Topography Optimization of Engine Block to Minimize Vibration Based on Sensitivity Analysis Xianfeng Du1, a, Zhijun Li1, b, Fengrong Bi1, c, *, Junhong ZHang1, d, Xia Wang1, Kang SHao1 1State Key Laboratory of Engines, Tianjin University, 92 Weijin Road, Tianjin 300072, P.
The three-dimensional model created by Pro/Engineer made some simplify some structures which have no large effect on the characteristics of engine block, but the major structure dimensions and shapes retain completely in order to have an accuracy correct FEM analysis.
When the FEM model of engine block and crankshaft is completed, define the same free boundary conditions and the properties of material and elements using experimental and FEM method respectively.
Table.3 Comparison between the test and FEM modal analysis of the crankshaft Modal Order Natural Frequency[Hz] Error[％] Experimental FEM 1 203.55 202.38 0.57 2 279.65 281.86 0.79 3 472.17 467.72 0.94 4 530.75 511.63 3.60 5 586.75 577.42 1.59 6 725.16 706.66 2.55 7 775.62 791.23 2.01 8 1018.34 994.03 2.38 Table.4 Comparison between the test and FEM modal analysis of the engine block Modal Order Natural Frequency[Hz] Error[％] Experiment FEM 1 325.95 316.89 2.78 2 557.58 547.27 1.85 3 565.59 572.54 1.23 4 645.59 616.78 4.46 5 691.60 656.76 5.04 6 855.24 833.17 2.58 7 952.22 967.52 1.61 8 1083.14 1032.66 4.66 The model of diesel engine block and crankshaft are key factors of the elements adopted for the vibration prediction of the engine in the analysis of FEM and Multi-body dynamics.

System of ultrasonic motor is time-varying, coupling nonlinear seriously, such as driving circuit nonlinear, piezoelectric materials nonlinear, mechanical friction transmission nonlinear between the stator and rotor of ultrasonic motor and so on [1,2].
So, It is a key of ultrasonic motor speed control study how to overcome the motor inherent nonlinear for getting a good speed control properties [3].
According to the method of engineering setting gain the controller parameters as the initial parameters of the motor actual control ,then it is not adjusted depend on the effect of the actual control until obtain the suitable parameters.
Since the temperature rise in the motor running process cause the resonance frequency drift and the change of piezoelectric materials and other equivalent parameters that it made the motor’s speed slow drop.

College of Nanoscale Science and Engineering, SUNY Albany, 255 Fuller Road, Albany, NY 12203, USA aypan@gelest.com; bexecutiveoffice@gelest.com; cEEisenbraun@uamail.albany.edu dAKalyoeros@uamail.albany.edu Key words: Long-Chain Organofunctional Silanes, Hydrosilylation, Substition, Reduction, Surface Derivatization, Monolayers, X-ray Photoelectron Spectroscopy, Reflection-Absorption Infrared Spectroscopy Abstract.A series of organofunctional long-chain alkylfunctional silanes have been synthesized for the purpose of derivatization of micro- and nanoparticles and generation of molecular monolayers and films on the substrates. 11-bromoundecylsilane and 1, 10-disiladecane are evaluated to interact with a variety of clean hydrogenated metal and metalloid including titanium, silicon and silicon dioxide.
Although the bulk properties of materials mainly depend upon the inherent nature and structure, often their surface activities can be tailored by the adsorption or deposition of thin layers of organic molecule.
Textor, European Cells and Materials, 7(2004), 16 4. a.

Relationship between Valence Electron Structures and Mechanical Properties of ZL203 Hua Qua, Weidong Liub School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China aliutongzi@sina.com, blgveslwd@sina.com Key words: ZL203 alloy, valence electron structure, aging, strengthening, calculation Abstract.
Zhang: Empirical Electron Theory of Solids and Molecules (in Chinese) (Jilin Science and technology publishing house, Changchun1993) [9] Zhilin Liu, Zhilin Li and Weidong Liu: Electron structure and properties of interface (in Chinese) (Science publishing house, Beijing 2002) [10] Yongjuan Jing, Changrong Li and Zhenmin Du, et al: Transactions of materials and heat treatment, Vol. 28(2007), p. 148 [11] Pingxia Zhong, Yingjun Gao and Hui Liu: The Chinese Journal of Nonferrous Metals, Vol. 14(2004), p. 55 [12] Yingjun Gao, Pingxia Zhong, and Hui Liu, et al: Chinese Journal of Rare metals, Vol. 27(2003), p. 845

For this reason, how to improve the competitive position of introduced strains has become a key point to scientific institutions.
Materials and Methods Rhizobium meliloti stain LW107 and Rhizobium sp.
Additionally, the resistant strains obtained from non fixed-point mutation screening might be relatively safer than engineered strains obtained from transgenosis (genes of engineered strains should be removed and released [24].
Chen: Advanced Materials Research Vols. 201-203 (2011), pp. 1023-1032 [14] J.F.

Surface Modification of Broaches from the Powder High Speed Steels Applied to Processing of Aviation Products from Heat-resistant Alloys GRIGORIEV Sergey1, a, CHERKASOVA Natalia1, b, Filatov Pavel2, c, Vereshchaka Alexey1, d 1Moscow State University of Technology STANKIN, Russian Federation, Moscow, 127994, Vadkovskiy side-street, 1 2Federal State Unitary Enterprise "Gas Turbine Engineering Research and Production Center "SALUT", Russia, Moscow, 105118, Budeny Avenue, 16 ascience@stankin.ru, bn.cherkasova@stankin.ru, c nats-chemnitz@rambler.ru, decotech@rambler.ru Keywords: Broaching tool, Ion nitriding, Complex hardening, Powder metallurgical high-speed steel, Heat-resistant nickel alloy, Two-stage vacuum-arc discharge Abstract.
As the practical experience shows, broaching of this group of materials is also followed by high wear rate of the broaching tool which is usually made of high-speed steels (including powder metallurgical ones) [1—3].
In this paper, the influence of the ion nitriding and subsequent wear resistant coating deposition ((Nb, Ti, Al)N) on the material properties of powder metallurgical high-speed steel PM-HSS (with the ultimate bending strength of 2600—3500 MPa, hardness of 66 HRC; Russian analogue is R12M3K5F2-MP) was investigated.
The influence of ion-plasma processing to the structure and material properties of nitrided case were studied using sample parts of 10x10x5 mm size that have been previously heat-treated.
Key Eng.

Gold catalysts on TiO2-modified silica gel for the selective cyclopentane oxidation to cyclopentanone Lixin Xu1, a, Chuanfeng Sun1, b, Jie Li1, c, Guangyuan Chen1,d 1School of Chemistry & Chemical Engineering, Anhui University of Technology, Ma'anshan 243002, PR China aLxxu@ahut.edu.cn, bscf-wj@163.com, ccnen1204008238@sina.com.cn, d171985724@qq.com Keywords: gold catalyst; cyclopentane oxidation; cyclopentanone; silica gel Abstract.
Mildly acidic silica gel is a cheap catalytic support material highly resistant to the acidic medium and considerably applicable in cyclopentane oxidation under a harsh reaction conditions.
Experimental 2.1 Materials and Methods.
As given in Fig 2, almost monodispersed black dots indicate the existence of Au nanoparticles although the TiO2/SiO2 support material displays a strong background of the images.
Entry 1 and 2 of Table 1 demonstrate that the Au species play a key role for the cyclopentane oxidations since no oxidation products were detected when the reaction was attempted in the absence of gold.

Experimental Materials HRP, activity is 270 u/mg, thermostable α-amylase (adaptive temperature is 94~103 °C), activity is 10000 u/mg, was obtained from Beijing Biosynthesis Biotechnology Co., Ltd.
Brigodiot, “Diketones as key compounds in free-radical polymerization by enzyme-mediated initiation,” Macromolecule, vol. 32, pp. 70-72, March 1999
Tian, “Synthesis, characterization and application in diesel oil of citric acicd-tetramethylene glycol-citric acicd-stearic acicd-octadecyl alcohol claw-large molecule,” Polymer Materials Science and Engineering, vol. 25, no. 6, pp. 24-27, June 2009