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Online since: October 2011
Authors: Hai Feng Yan, Zhi Sheng Zhao, Xiong Zhang, Tao Jing
The source materials, construction technology, construction machinery, and testing means are main stone.
But each of the different projects have different materials, processes and equipment, engineering and technical personnel of different quality, the occurrence of the main factors of variation for different reasons, the lack of specificity of the measures proposed do not necessarily apply to other projects.
Journal of Chang an University(Natural Science Edition),(2008)11-15
Journal of Highway and Transportation Research and Development,6(2006)33-37
Journal of Highway and Transportation Research and Development,5(2006)18-22.
But each of the different projects have different materials, processes and equipment, engineering and technical personnel of different quality, the occurrence of the main factors of variation for different reasons, the lack of specificity of the measures proposed do not necessarily apply to other projects.
Journal of Chang an University(Natural Science Edition),(2008)11-15
Journal of Highway and Transportation Research and Development,6(2006)33-37
Journal of Highway and Transportation Research and Development,5(2006)18-22.
Online since: November 2011
Authors: Yan Jin, Yun An Hu, Hao Ran Zhang, Jun Huang
Genetic algorithm was applied to optimized design for broadband, thin-layer radar absorbing materials.
Journal of Beijing University of Aeronautics and Astronautics, Vol.23,Feb.1997,pp.141-146
“Design of broadband,thin-layer radar absorbing materials using genetic algorithms”.
Beijing: Science Press, Sep.2005,pp.87-108
Journal of Beijing University of Aeronautics and Astronautics, Vol.20,Jan.1994,pp.1-6
Journal of Beijing University of Aeronautics and Astronautics, Vol.23,Feb.1997,pp.141-146
“Design of broadband,thin-layer radar absorbing materials using genetic algorithms”.
Beijing: Science Press, Sep.2005,pp.87-108
Journal of Beijing University of Aeronautics and Astronautics, Vol.20,Jan.1994,pp.1-6
Online since: May 2011
Authors: Shi Cai Chen, Chun Yang Liu, Hua Ma, Zhen Bao Li, Jian Qiang Han
The calculation is according to the material test results of the column and the beam.
The material properties of reinforcement and concrete are shown in Table1.
Journal of Building Structures,Vol.29(2008), p20-25.
China Civil Engineering Journal, Vol.40(2007), p7-14.
(In Chinese) [9] YANG Hong,WANG Jian-hui,BAI Shao-liang.China Civil Engineering Journal, Vol.41(2008), p40-47.
The material properties of reinforcement and concrete are shown in Table1.
Journal of Building Structures,Vol.29(2008), p20-25.
China Civil Engineering Journal, Vol.40(2007), p7-14.
(In Chinese) [9] YANG Hong,WANG Jian-hui,BAI Shao-liang.China Civil Engineering Journal, Vol.41(2008), p40-47.
Online since: October 2013
Authors: Yu Liu, Zhi Xiong Yang, Jie Huang, Ting Ma
Most of the rural school buildings in Guanzhong area are architecturally constructed of masonry-concrete structure, and solid clay brick is used as the main wall materials.
However, all the school buildings have flat roofs, and the traditional local materials are abandoned in the construction, which reduces the local flavor and characteristics and adds inharmony to surrounding environment (Fig.4).
Energy-saving Strategy for Rural Schools in Guanzhong Area Obtaining Raw Material Locally and Using New Wall Materials.
Close the original south direction corridor of the classrooms, lay heat storage materials, and place plants in the corridor to form efficient sunshine rooms (Fig.5).
With quantities of people, feces, and organic garbage from agricultural and sideline products, the rural school has natural and rich advantages to set up biogas system with these abundant raw materials.
However, all the school buildings have flat roofs, and the traditional local materials are abandoned in the construction, which reduces the local flavor and characteristics and adds inharmony to surrounding environment (Fig.4).
Energy-saving Strategy for Rural Schools in Guanzhong Area Obtaining Raw Material Locally and Using New Wall Materials.
Close the original south direction corridor of the classrooms, lay heat storage materials, and place plants in the corridor to form efficient sunshine rooms (Fig.5).
With quantities of people, feces, and organic garbage from agricultural and sideline products, the rural school has natural and rich advantages to set up biogas system with these abundant raw materials.
Online since: August 2011
Authors: Kai Zhang, Hua Dian Wen, Ying Chen, Xiao Ting Xiao, Li Guang Tan
The reason is that the larger the branch diameter is, the smaller forming force is needed, and it’s easier for materials flow into branch in the branch direction.
The forming process of metal flow law tell us that branch place’s material mainly due to the ends of the filling material, small material between branches also flow into branch in the branch direction .
The reason is that the larger the fillet radius is, the smaller forming force is needed, and it’s easier for materials to flow into branch in the branch direction.
Acknowledgements The authors would like to thank the National Natural Science Foundation of China (Granted No.U0934006) for funding this research.
[6] Zhang, S: Journal of Materials Processing Technology, Vol 91(1999), p236-244
The forming process of metal flow law tell us that branch place’s material mainly due to the ends of the filling material, small material between branches also flow into branch in the branch direction .
The reason is that the larger the fillet radius is, the smaller forming force is needed, and it’s easier for materials to flow into branch in the branch direction.
Acknowledgements The authors would like to thank the National Natural Science Foundation of China (Granted No.U0934006) for funding this research.
[6] Zhang, S: Journal of Materials Processing Technology, Vol 91(1999), p236-244
Online since: September 2016
Authors: Chen Yang Zhang, Yong Fei Wang, Sheng Dun Zhao
Fig. 3 Microstructures of AlMg0.7Si alloy at different conditions: (a) starting material,
(b) RF with 20% ARR, (c) RF with 40% ARR, (d) RF with 60% ARR, (e) RF with 80% ARR
Semi-solid microstructure of remelting of starting material.
Thus, it is obvious that remelting of starting material is difficultly used for the preparation of semi-solid AlMg0.7Si alloy with fine grains.
In Fig. 5, the solid grains of semi-solid AlMg0.7Si alloy prepared by RF and remelting process are smaller and rounder than by remelting of starting material.
Acknowledgements This work is supported by the National Natural Science Foundation of China for key Program (Grant No. 51335009), the Natural Science Foundation of Shaanxi Province of China (Grant No. 2014JQ7273) and the Xi′an Science and Technology Plan Projects (Grant No.
Part B: Journal of Engineering Manufacture. 229 (2014)
Thus, it is obvious that remelting of starting material is difficultly used for the preparation of semi-solid AlMg0.7Si alloy with fine grains.
In Fig. 5, the solid grains of semi-solid AlMg0.7Si alloy prepared by RF and remelting process are smaller and rounder than by remelting of starting material.
Acknowledgements This work is supported by the National Natural Science Foundation of China for key Program (Grant No. 51335009), the Natural Science Foundation of Shaanxi Province of China (Grant No. 2014JQ7273) and the Xi′an Science and Technology Plan Projects (Grant No.
Part B: Journal of Engineering Manufacture. 229 (2014)
Online since: October 2014
Authors: Yan Zhao Zhang, Yan Wei Cheng, Hui Yuan Ya, Chao Jun He, Li Yi, Lin Tang, Xi Ning Du, Bing Yue Wu, Da Xia Ding
Materials and methods
Botrytis Spp was separated from the soil of the wheat fields July 2012.
Chinese Journal of Biological Control, 2004,20(2):91-94
China Tobacco Science, 2005, l1 (6) :33-36 .21 (4) :265-268
Chinese Academy of Agricultural Sciences, PhD thesis, 2006 [7] Qiu D,Clayton K.Messenger enhances plant biomass accumulation.
Xinjiang Normal University (Natural Science), 2005,24 (4) :65-68
Chinese Journal of Biological Control, 2004,20(2):91-94
China Tobacco Science, 2005, l1 (6) :33-36 .21 (4) :265-268
Chinese Academy of Agricultural Sciences, PhD thesis, 2006 [7] Qiu D,Clayton K.Messenger enhances plant biomass accumulation.
Xinjiang Normal University (Natural Science), 2005,24 (4) :65-68
Mechanical and Fungicidal Properties of approximately 100 Years Old Oak, Beech and Spruce Wood Beams
Online since: September 2013
Authors: Nejc Thaler, Miha Humar
Introduction
Wood has a number of excellent properties as a building material: it has a high strength to weight ratio, it is a good thermal insulator, it can be shaped and connected to form larger structures and it is one of the most sustainable and environmentally friendly materials.
Furthermore, the natural durability of freshly cut timber was rather extensively studied, but up to our best knowledge there are not many reports regarding the performance of wooden materials after certain period of use.
Land, Testing and evaluation of natural durability of wood in above ground conditions in Europe – an overview, Journal of Wood Science. 51: 5 (2005) 429–440
Zwick Z100 / Z250 materials testing machine with central ball-lead screw - Product information. 2005
Shumka, The study of biological decay with church wooden materials in prespa lake area (Albania), Natura Montenegrina. 9: 3 (2010) 827–831
Furthermore, the natural durability of freshly cut timber was rather extensively studied, but up to our best knowledge there are not many reports regarding the performance of wooden materials after certain period of use.
Land, Testing and evaluation of natural durability of wood in above ground conditions in Europe – an overview, Journal of Wood Science. 51: 5 (2005) 429–440
Zwick Z100 / Z250 materials testing machine with central ball-lead screw - Product information. 2005
Shumka, The study of biological decay with church wooden materials in prespa lake area (Albania), Natura Montenegrina. 9: 3 (2010) 827–831
Online since: March 2023
Authors: Gustavo Caiza, Katya Lozada, Nixon Quiroz, William Oñate
They have become reliable tools that are applied in different fields and disciplines (medicine, industry, science, teaching, training, and robotics, among others).
Augmented reality is one of the technologies that provide support tools for operators to perform tasks, helping in the assembly, assistance, visualization, interaction, quality control, and material management [4].
In addition, it contributes to new possibilities to create materials that enable concluding industry-related problems [17].
Spetzler, «Interactive stereoscopic virtual reality: a new tool for neurosurgical education,» Journal of Neurosurgery, vol. 96, nº 1, p. 144–149, 2002
Kolars, «Computer Simulator Training Enhances the Competency of Gastroenterology Fellows at Colonoscopy: Results of a Pilot Study,» The American Journal of Gastroenterology, vol. 99, nº 1, pp. 34-37, 2003
Augmented reality is one of the technologies that provide support tools for operators to perform tasks, helping in the assembly, assistance, visualization, interaction, quality control, and material management [4].
In addition, it contributes to new possibilities to create materials that enable concluding industry-related problems [17].
Spetzler, «Interactive stereoscopic virtual reality: a new tool for neurosurgical education,» Journal of Neurosurgery, vol. 96, nº 1, p. 144–149, 2002
Kolars, «Computer Simulator Training Enhances the Competency of Gastroenterology Fellows at Colonoscopy: Results of a Pilot Study,» The American Journal of Gastroenterology, vol. 99, nº 1, pp. 34-37, 2003
Online since: November 2012
Authors: Hua Zhang, Jian Sheng
Precipitation Characteristics of CaCO3 Scaling on Stainless Steel in Cooling Tower Condition
Jian Shenga, Hua Zhangb
School of Power and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PRC
aE-mail: sjhvac@163.com, bE-mail: zhanghua3000@163.com
Keywords: CaCO3 crystallization fouling, Coupon test, Crystal morphology
Abstract.
The characteristics of CaCO3 crystallization fouling growing on common heat exchanger materials which are ss304 and ss316 are studied by static reaction method, and the growth mechanisms of CaCO3 crystallization fouling are further studied.
Temperature distribution and exergy transfer characteristics of the single-phase flow heat exchanger, Journal of Power Engineering, Vol.29(2009)No. 11,p.1023.
Process dynamics and fractal analysis of new phase formation in thermal processes, Journal of Thermal Science, Vol.10(2001)No.2,p.153
Journal of Crystal Growth, Vol.318(2011)No.1,p.99.
The characteristics of CaCO3 crystallization fouling growing on common heat exchanger materials which are ss304 and ss316 are studied by static reaction method, and the growth mechanisms of CaCO3 crystallization fouling are further studied.
Temperature distribution and exergy transfer characteristics of the single-phase flow heat exchanger, Journal of Power Engineering, Vol.29(2009)No. 11,p.1023.
Process dynamics and fractal analysis of new phase formation in thermal processes, Journal of Thermal Science, Vol.10(2001)No.2,p.153
Journal of Crystal Growth, Vol.318(2011)No.1,p.99.