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Online since: July 2012
Authors: Chang Qing Fang, Jian Zhong Pei, Zeng Ping Zhang, Shuan Fa Chen
They have received much attention because of their outstanding physical properties including low water absorption and low outgassing.
The cured specimens were removed from the mold and cut with a water coolant to required sizes: 15 mm×10 mm×4 mm (type I) and 27mm×27mm×4mm (type II).
Hamerton: Chemistry and Technology of Cyanate Ester Resins (Blackie Academic & Professional, Glasgow, London, 1994)
Online since: July 2011
Authors: Pravitra Chandranupap, Panitnad Chandranupap, Pantharee Kongsat
The polymer components in toner are generally highly hydrophobic and then cannot be dissolved in water [1-3].
The pulp slurry was prepared by mixing small pieces of paper in water at 0.5%, 1.0% and 1.5% pulp consistency in an emulsifier at 1000 rpm for 5 minutes.
McKinney, in: Technology of Paper Recycling, Blackie Academic & Professional, London (1995)
Online since: October 2012
Authors: He Wang
It is generally acknowledged that this urban infrastructure system, being “the development foundation of urban economy and social undertaking” [2], consists of power, water recourse, water supply and drainage, communication, post and telecommunication, environment and disaster prevention.
It is gratifying that some professional planners have lucubrated the theories on urban sculptures and made quite a few achievements.
Online since: September 2011
Authors: Bo Han Zhao, Hai Hong Song
What's worse, their technological resources are rather disperse and have no perfect facilities for providing professional technological services, research and development and training.
Some of the citizens of other places in Harbin have moved to high buildings equipped with water, electricity and gas, while the workers here are still living in the easily-built houses established in the early start of the 1950s; the street blocks of their residence sees shrinking commercial services and business circles with each passing day.
Percent % Industrial land Residential land Land for public utility Land for storage Intercity transportation land Roads and squares Land for urban facilities Water area and other lands Land for special purposes Land for urban construction 544.88 491.57 81.40 101.17 65.39 191.36 38.10 75.33 3.45 1609.37 33.86 30.54 5.06 6.29 4.06 11.89 2.37 4.68 1.25 Current Situation of Land Distribution.
Online since: March 2012
Authors: Su Wang
It usually consists pollution control engineering on water, air, solid wastes, physical pollution, as well as biological environment restoration.
Through the collection, the database specialized in every aspects of the environmental engineering according to professional classification in the information collection system, such as water pollution control database, air pollution control database and so on.
Online since: September 2011
Authors: Xin Huang, Yi Kai Fan, Xiang Qian Liang, Xue Dong Zhang
Blast Wave Effect on Apparatus and Propagation Laws in Dry Sand in Geotechnical Centrifuge Model Tests Yi Kai Fan1,a, Xiang Qian Liang2,b, Xin Huang1,c, Xue Dong Zhang2,d 1School of Transportation Science and Engineering, Beihang University, Beijing 100191, China 2Department of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research (IWHR), Beijing 100044, China ayk_fan2006@163.com, bliangxiangqian@126.com, chx2000@buaa.edu.cn, dytzxd@iwhr.com Keywords: Geotechnical centrifuge apparatus, Model tests, Explosion, Blast waves, Dry sand Abstract. 7 geotechnical centrifuge model tests for buried explosion in dry sand were investigated by using 450 g-t geotechnical centrifuge apparatus.
The water content of the tested sand is close to 0.
London: Blackie Academic and Professional, 1995
Online since: July 2011
Authors: Wei Chen Sheng, Wei Wei, Jing Tan, Zhi Ping Zhou, Hao Jie Song
The precipitate was filtered and washed with ethanol and deionized water to eliminate the chlorine ion, and finally washed with acetone.
Firstly, dissolving a certain amount of Eu(AA)3 and 0.3w% AIBN in reaction monomers of 0.07mol MMA, 0.03mol HMA in glass tube, then exhausting the oxygen at vacuum, sealing the tube and putting into the water bath for 48 h at 45˚C.
Acknowledgment This work was sponsored by the NSF of China (20774038) and advanced professional faculty foundation of Jiangsu University (06JDG061).
Online since: July 2014
Authors: Li Xin Li, Yu Mei Liu, Yue Huang
Through professional discussion and analysis, we determine the priority relationship value of completed projects cai, as the Table2: Table 2 Engineering characteristics Priority relationship No.
A1 A2 A3 A4 A5 Foundation Bricks of base Reinforced concrete foundation Pile foundation reinforcement reinforced concrete strip foundation Reinforced concrete strip foundation Reinforced concrete strip foundation cai: 1 cai: 0.68 cai: 0.66 cai: 0.81 cai: 0.81 Structure Brick and concrete structure Prefabricated framework board Full cast frame work Frame shear structure Brick and concrete structure cai: 0.58 cai: 0.82 cai: 0.43 cai: 0.24 cai: 0.58 Wall decoration Dry wall Dry stone stick Water brush Face brick Drywall cai: 1 cai: 0.66 cai: 0.85 cai: 0.91 cai: 1 Window forms Wood windows Plastic windows Aluminum windows Aluminum persian blinds Aluminum windows cai: 0.56 cai: 0.82 cai: 0.85 cai: 0.89 cai: 0.85 External works Hollow brick Standard brick Block Reinforced concrete bulkhead Block cai: 0.78 cai: 0.64 cai: 0.83 cai: 0.58 cai: 0.83 Room combination One room and one hall Two rooms and one hall Two rooms and
Anhui Water Science and Technology, 2004, (4): 17 to 18.
Online since: September 2011
Authors: Hai Chao Li, Lei Yu Zhang, Xiao Rong Yang, Ding Ran
Because of the construction will have an impact on the surrounding environment, such as noise, changes, changes in underground water level, discharge for the foundation of mud and water or use of chemical pesticides on groundwater pollution, so the choice of construction methods and treatment method must be fully taken into account.
Select this article is representative of 30 experts and personnel determine the weights of evaluation factors of soft soil Foundation treatment technology, was consulting both geo-technical personnel of scientific research, design, construction and management of personnel, their experience, familiar with professional knowledge and management of soft soil Foundation treatment, it has a full representation, evaluation results has higher credibility.
Online since: August 2013
Authors: Bi Xiang Mei
An independent code design system for offshore wind turbines at home has not yet been formed because of sophisticated effects of ocean meteorological conditions, hydrologic conditions and geological environment.Monopile foundation construction is one of the difficulties of the offshore wind farm construction due to involving multiple professional fields.
The main reason is that horizontal environmental loads are main components in overall loads,such as wave load, water ice load and wind load, etc. 3)Results of fatigue analysis When carrying on the fatigue analysis, element shell 63 is used to simulate the transition connection section and the pile foundation .
Such type can avoid the shortcoming of soft-soft type due to too close frequency between wave frequency and natural frequency on the one hand, on the other hand also can avoid the shortcoming of rigid-rigid type due to too high overall stiffness,which may cause the excessive waste of investment. 2) Horizontal environmental loads are main components in overall loads,such as wave load, water ice load and wind load, etc.The design of monopile foundation for offshore wind turbines is mainly controlled by foundation horizontal bearing capacity and deformation, generally not by vertical bearing capacity. 3)For onshore wind turbines,the fatigue of pile-cap structure can be often satisfied if ignored.however, for offshore wind turbines,its fatigue analysis must be performed due to the long cantilever of the transition section.
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