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Online since: February 2016
Authors: M.S. Ostapenko, A.M. Tveryakov
This is due to a significant extreme changing of physical and mechanical characteristics of tool and processed materials depending on a temperature of cutting [4,5].
Applied Mechanics and Materials, #379: 49-55
World Applied Sciences Journal, Volume 25, Issue 9, 2013, Pages 1275-1279
Applied Mechanics and Materials Vol. 770 (2015) pp 216-220
Applied Mechanics and Materials Vol 770 (2015) pp 34-39
Online since: November 2013
Authors: Wen Jia Han, Chuan Shan Zhao, Ai Yun Long, Yi Fei Jiang
Research on Biological Modification of Pulp to Improve the strength of paper Aiyun Long1,a, Chuanshan Zhao1,b, Wenjia Han1,c and Yifei Jiang1,d 1Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education, QiLu University of Technology, Jinan, Shandong Province,250353, China.
alongaiyun2008@163.com, bppzcs78@163.com, chwj200506@163.com, djiangyifei10432@163.com Keywords: OCC pulp; Laccase; Physical properties; Histidine(His) Abstract: Based on the domestic OCC pulp as raw material, it was found that the optimum conditions for laccase treatment were: the concentration of laccase 16U/g dry pulp, the pulp consistency 5%, temperature 50 ℃, pH=5.0 and reaction time 90min.
Experimental Materials.
[4] Kapoor M ,Kapoor R K,Kuhad R C.Differential and synergistic effects of xylanase and laccase mediator system(LMS)in bleaching of soda and waste pulps[J].Journal of Applied Microbiology,2007,103(2):305-317
Online since: September 2019
Authors: Vasily Y. Belyankov, Aleksandr E. Goldshtein
One of the most important tasks of testing, which is effectively resolved with use of SECP, is thickness measuring of a pipe wall made from electrically conductive nonmagnetic materials, as well as of dielectric coatings of these pipes or the air gap between SECP and the surface of a pipe [1, 4, 5].
The FEM advantages in solving real problems are the versatility of usage, arbitrary form of the treated area, the absence of necessity for the object approximation to standard geometric shapes, the ability to solve unsymmetric problems based on irregularity of materials and media parameters [2, 9, 10].
A widespread drill pipe from nonmagnetic material with a nominal outside diameter D = 147 mm was taken, specific conductance σ varied in the range of (10...25) MS/m, wall thickness T in the range of (5...15) mm, the distance between the SECP measuring coil and the pipe surface in the range of (3...15) mm.
Technical and economical opportunities (Iceland: The school for renewable energy science) 126 [7] M.
Lichuan, Coil impedance calculation of an eddy current sensor by the finite element method, Russian Journal of Nondestructive Testing 44 (2008) 296
Online since: September 2012
Authors: Fei Hu Zhang, L.F. Liu, Chun Hui Li
Hard and brittle materials such as glass and ceramics have properties of high hardness, low coefficient of thermal deformation, high wear resistance, high chemical stability etc. which make them more popular than other materials in many applications [1-3].
Grinding process is the most commonly used method of hard and brittle materials.
Research Actualities of Ductile Machining for Hard and Brittle Materials.
The Applications of Ultrasonic Vibration on Machining Technologies for Nonmetal Hard and Brittle Materials.
Journal of Materials Processing Technology, Vol.62 (1996), p. 287–293
Online since: November 2012
Authors: Quan Sheng Yan, Heng Bin Zheng, Chen Zhou, Guo Wei
Due to the union of steel and concrete, which are easy to cause concrete cracking, that means we may not consider these materials as elastic stuff but take into account of the material nonlinearity influence.
The difficult of reinforced concrete structure’s finite element analysis is the accurate description of concrete material, concrete is regarded as a hybrid material, the constitutive relation is very complex, this paper use ANSYS finite element analysis software to analyze.
ANSYS software has solid65 element type to specifically analyze reinforced concrete structure and relevant concrete material [4].
From the finite element calculation and test, we can notice that the stress of anchor plate is not large, So we can reduce the thickness of anchor plate to save materials and reach the purpose of installation convenience.
Cong, reinforced concrete beam elastic-plastic problems of computer simulation analysis, Journal of Northeast Forestry University, 4 (2004) 58
Online since: March 2010
Authors: Xing Quan Zhang, Guang De He, Xiao Li Qi, Neng Gang Xie
Responding to laser shock wave action, the material strain rate exceeds 10 6 s-1, so static stress-strain relation is essentially invalid to characterize the material response.
When the peak pressure of stress wave is greater than the HEL of material, the material yields and deforms.
The plastic deformation of material continues until the peak pressure below the HEL.
This work is financed by the National Science Foundation of Anhui province (090414156) and the Foundation for New Century Talents Scheme of Ministry of Education of China (070003).
International Journal of Fatigue.
Online since: July 2015
Authors: Chun Hsing Shih, H.H. Chen, Shen Li Chen, Shawn Chang
Speaking of the physical property, the gallium nitride belongs to a direct bandgap material with an obviously super luminous efficiency; therefore, the gallium nitride has the dominate tendency than that of others materials.
Not only does GaN have the advantage of being a direct band gap material, it can be used with InN (2.0 eV) and AlN (6.2 eV) to form ternary and quaternary compounds and extend its direct band gap range to 1.95 - 6.2 eV with the corresponding wavelength extensions from the green frequency range to that of ultraviolet frequencies, allowing it to be used for expanded applications.
ESD Testing Results of GaN LEDs In terms of physical characteristics, GaN is classified as a direct band gap material that has a very advantageous edge in terms of luminous efficiency.
Gonda, Epitaxial growth of GaN/AlN heterostructures, Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 1 (1983) 250-253
Online since: October 2015
Authors: Iveta Jeleňová, Lukáš Kakalejčík, Martina Ferencová
Sample, Material, Procedure and data analysis The sample consisted of 176 students of two faculties in Eastern Slovakia, selected by convenience sampling.
In: Journal on law, economy and management, vol. 3, no. 1, 2013
Journal of Technology Research, 07, vol. 4 (2013), pp. 1-13, ProQuest Central
Journal of Service Science and Management, 10, vol. 7, no. 5 (2014), pp. 368-376, ProQuest Central
International Journal of Business and Social Science, 05, vol. 4, no. 5 (2013), ProQuest Central
Online since: October 2004
Authors: Geng Kai Hu, Zhu Ping Huang
Two homogenization methods are presented for modeling the overall elasto-plastic behavior of composite materials, the first one is applied to the case where the nonlocal property of the constituents can be neglected, and the second one considers this nonlocal effect by idealizing the constituents as micropolar materials.
For example, the classical micromechanical method applies for the following length scale condition mlAlL >>>>>> [1,2], so that both the constituents and the homogenized materials can be idealized as Cauchy materials without any inner microstructures.
Journal of Engineering Mechanics-ASCE Vol. 128 (2002), p.808 [2] G.K.
Hori, Micromechanics: Overall Properties of Heterogeneous Materials (North-Holland: Elsevier, 1993)
Aifantis, J. of Engineering Materials and Technology Vol.124 (2002.), p.352
Online since: December 2012
Authors: Yan Zuo, De Jun Bian, Sheng Shu Ai, Qing Kai Ren, Li Guo Wan
Materials and Methods Experimental equipment and operation mode.
Acknowledgements This work was financially supported by National Natural Science Foundation of China (50878028, 50978032), the New Century Excellent Researcher Award Program from Ministry of Education of China (NCET-08-0689), Natural Science Foundation of Jilin Province (201115139), Science and Technology Development Plan Foundation of Jilin Province (20122112) and Science and Technology Research Project of Education Department of Jilin Province (2010183).
The Patent of china: CN2603079 (In Chinese) [2] Xi Tian, Liguo Wan, Dejun Bian: Environmental Science Technology Vol.33 (6E) (2010), p.374 (In Chinese) [3] Hua Dong, Wei Lu: Water Protection Vol.3 (1997), p.43 (In Chinese) [4] NEPA: Monitoring and Analysis Method of Water and Wastewater[M].
Beijing: China Science and Technology Publishing House(2002), p.210 (In Chinese) [5] Vidal G, Nieto J , Cooman K, Gajardo M , Bornhardt C: Journal of Hazardous Materials Vol. 112 (1/ 2) (2004), p.143 [6] Jubany I , Baeza J A , Carrera J , Lafuente J: Water Research Vol.39 (18) (2005),p.4574 [7] Surmacz-Gorska J, Gernaey K, Demuynck C, Vanrolleghem P, Verst raete W: Water Research Vol. 30 ( 5 ) (1996), p.1228 [8] Ruyan Yun: China Water & Wastewater Vol.23 (14) (2007), p.40 (In Chinese)