Search results

The safety analysis for underground tunnel of civil engineering by the stress and deformation of rock mass material Xionggang Xie1, a, Zhaoyang Yu1,b and Zebiao Jiang1,c 1 Mining college, Guizhou University, Guiyang 550025, China a xiexionggang2011@126.com, b zhaoyyugz@hotmail.com, cjiangzbgzu@gmail.com Keywords: tunnel; safety degree; underground; rock material response;civil engineering Abstract.
The Mohr-Coulomb criterion is used in this paper to describe the strength of rock mass in tunnel of civil engineering.
The incremental expression of Hooke’s law in terms of the generalized stress and stress increments has the form, (1) where, where and are material constants defined in terms of the shear modulus, G, and bulk modulus, K, as, , .
Fig. 5 Distribution of horizontal displacement for tunnel surrounding rock mass Conclusions Excavation of tunnel in civil engineering will lead to the redistribution of stress in rock mass, in order to compare the analytic and numerical solution of rock mass response to predict the safety degree of underground tunnel, some calculations are done by theoretical and numerical methods.
Acknowledgements This work was financially supported by the Key Project fro Education Department of Guizhou Province Natural Science(2011034); Introduction of Talent Research Fund of Guizhou University (2010002).

However, figuring out the necessary material information is a difficult and time consuming process for the plant engineers, especially if they have little expertise in material science and engineering.
The overall database system is largely divided into 4 subdatabase systems; materials, facilities, technical reports, and engineering term's dictionary database.
l Technica l Technica l ReportReportReportReport TitleTitleTitleTitle SubjectSubjectSubjectSubject Material/ Facility Material/ Facility Material/ Facility Material/ Facility Report NoReport NoReport NoReport No AuthorAuthorAuthorAuthor ContentsContentsContentsContents SummarySummarySummarySummary Link to Original Report Link to Original Report Link to Original Report Link to Original Report Engineering Engineering Engineering Engineering Dictiona rDictiona rDictiona rDictiona ryyyy Bills of Material Bills of Material Bills of Material Bills of Material Ma teria l Engineering Ma teria l Engineering Ma teria l Engineering Ma teria l Engineering Dictiona ry Dictiona ry Dictiona ry Dictiona ry Material Designation Types Forms Standard Equivalent Standards Previous Standard Organization Country Chemical Composition Component Minimum Maximum Material Property Number of Inputs Property Item Unit Test Conditon Min.
Therefore, plant engineers, who have little expertise in material engineering, have the difficulties in using these material information systems at their convenience.
In the course of development, KEPRI took into account of the key characteristics of materials data as the basis of the other engineering systems.

The Research on Management Maturity Evaluation Model of Petroleum Engineering Projects [J].
Therefore, the primary task of engineering project management is to mobilize the initiative of staff.
Then, what basic abilities should engineering project manager pay attention to, exercise and improve?
Analysis on current issues in project supervision and engineering project management [J].
Sichuan Building Materials, 2007, 33(2): 55-56.

Classification Syllogism in the Farm Vehicle Design based on the Kansei Engineering Z.
This is the basis of Kansei Engineering to guide the design.
Nagamachi, the former president of Mazda automobile group, defined Kansei Engineering as follows: "A kind of technology, which could transform the product's feeling or image into the key element of the design." [1].
Fig.4: Classification Syllogism based on Kansei Engineering.
Kansei engineering, (1995) [3] 長い町は三生まれます.

This special edition presents an overview of recent advancements in materials science and engineering, covering key themes such as the processing of structural metals, fatigue analysis critical for enhancing durability and safety, and innovative building materials and construction technologies aimed at sustainable development.
This edition serves as a valuable resource for researchers and practitioners in materials engineering, machinery and construction.

Industrial Scale Engineering of Photocatalytic Nanomaterials by Flame Spray Pyrolysis (F.S.P.)
Areti Zindrou1, a, Asterios Mantzanis1, b and Yiannis Deligiannakis1,c,* 1Laboratory of Physical Chemistry of Materials & Environment, Department of Physics, University of Ioannina, Ioannina, Greece aa.zindrou@uoi.gr, ba.mantzanis@uoi.gr, cideligia@uoi.gr Keywords: Photocatalysis, Artificial Photosynthesis, Water-splitting, H2, O2, Doping, Flame Spray Pyrolysis, Industrial Engineering, Nanomaterials, BiVO4, TiO2.
Key-Performance-Indicators that allow transition of Lab-Scale to Industrial-Scale engineering of semiconductors are discussed, including cost-analysis and environmental impact of the production process.
Due to these high local temperatures, highly crystalline and homogeneous materials are produced[9].
Especially, in the case of gas-phase synthesis where FSP provides an easy and one-step process for the engineering of multicomponent and/or doped materials for catalytic applications the setup configuration plays a critical role[27].

Analysis of inclusion microstructure in material engineering of steel Dingguo Zhaoa, Shuhuan Wangb,*, Mingjian Guoc College of Metallurgy and Energy, Hebei United University, Tangshan 063009, Hebei, China agyyzhao@163.com, bwshh88@heuu.edu.cn, cguomj299@163.com Keywords: inclusion; microstructure; technic control,material engineering Abstract: The sample of oxide inclusion was obtained in the different stage of steelmaking for the 65 steel.
The measures including raw material requirement, improving of the converter, LF refining and continuous casting operations were put forward to decrease inclusion.
There are much higher request to the quality of the wire with the development of the iron and steel materials.
The exogenous inclusions come from the corrosion flake of furnace (ladle, tundish and so on) lining, and other material such as covering slag, covering agent and mixed slag.
The key of the composition control is low-phosphorus, low-sulfur, low-nitrogen, low-hydrogen, low-oxygen, stable carbon content and micro-alloying elements.

Corn-rice Powder Extrusion Key Parameters in Twin-screw Extrusion Process Xiao-ping LI1, a, Zhi-sen ZHANG2, b, Hui-jin XIAO2, c, Qiang ZENG2 and Xiao-an ZHANG2 1 Dept. of Mechanical Engineering,Jincheng college of sichuan university, Chengdu, Sichuan, China 2 Dept. of Physics and Technology, Sichuan University of Arts and Science, Dazhou, Sichuan, China alxp200509@126.com, bthrywood@163.com, cxhj212@163.com Keywords: Corn-rice Powder, Twin-screw Extrusion, Key Parameters; Regression Analysis, Response Analysis.
To find the inner relations of extrusion key parameters, 2-factor and 3-level orthogonal experiments are carried out on the twin-screw extruder with the corn-rice powder as the materials.
The extruder can suit perfectly to the materials such as corn-rice mixture.
Journal of Food Engineering, 1995, 25:245-260
Transction of the Chinese Society of Agricultural Engineering. 2000, (3): 91-93．

Quality control and supervision of Material in Construction Yun Cai Zhengzhou Institute of Aeronautic Industrial Management, Zhengzhou, Henan, China 450015 cy2109@163.com Keywords: construction work; materials, supervision, quality control, measures Abstract: The quality of engineering materials, directly affects the whole building quality and grade, structural safety , the external image and use of function after the completion, therefore, the project materials of construction work is the important content of the quality.
As we all know, quality is the lifeblood of construction works, and the constructional material is the base to ensure the quality and quantity of the preliminary engineering quality, therefore, the quality of the materials will have a direct impact on the construction in terms of quality, level, structure, appearance and the usage of the building.
III Supervision of buying materials In the process of purchase , we must weigh the material of that card and prevent using the improper or substandard materials.
Because of the unstable cases in building materials market, the two major materials, mainly steel and cement are often in shortage.
Steel and cement Because of the amount of construction engineering materials consumes is large and the purchase channels have more realities , the construction unit should arrange each batch of steel , cement , approaching request in batches , manufactured minutes varieties piling up , storage , and timely providing certificate .

This article also argues the strategy of earthquake resistant materials and structural strategy, the role of seismic designs in ecological safety strategies, reliable technology and conceptual design of earthquake engineering, etc. 1.
According to the theory of ecosystem and system theory, the working strategy in the architecture design and building materials engineering should be interdisciplinary working and integrated collaboration of designers and building materials engineers.
Some ecological knowledge and disasters prevention technology should be collected and extracted from ecology and restoration ecology, biology and biotechnology, green building materials engineering, environmental engineering, earthquake disaster reduction planning, building fire protection and prevention, structures against lightning etc.
Therefore earthquake engineering is lifeline engineering and ecological project.
In conceptual design of earthquake engineering, appropriate and reliable tech should be paid attention to.