Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: February 2012
Authors: Sheng Rong Li, Bao Jian Jia, Yu Tong Yan, Na Zhang, Liang Jiang, Li Na Yan
Composition typomorphic characteristics of pyrite in various genetic type gold deposits Yutong Yan 1,2, a, Shengrong Li 1,2,b , Baojian Jia1,2,c, Na Zhang1,2,d, Liang Jiang2,e and Lina Yan 1,2,f 1State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, PR China 2School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, PR China a81089633@qq.com, blisr@cugb.edu.cn, cjbaojian@yahoo.cn, dzhangna@biem.edu.cn, e944717150@qq.com, fiamlinayan@126.com Keywords: gold deposits; pyrite; composition typomorphism; genesis Abstract.
The theory type is based on ore-forming factors such as mineralization time, geological setting, geological action and ore-forming material source[12].
Acknowledgements Funded by National Natural Science Foundation Major Research Plan Key Support Project (Grant No. 90914002), the 111 Project under the Ministry of Education and the State Administration of Foreign Experts Affairs, China (Grant No.
International Journal of Mineral Processing, 74(1-4):41-59
Geological Journal of China Universities, 6, 156-162.
Online since: May 2023
Authors: Tay Chia Chay, Saiyidah Nafisah Hasyim, Norrizah Jaafar Sidik, Nur Nadirah Rodzali, Siti Nur Azmu’i Abdullah, Noor Amira Muhammad
Therefore, the attention is now increasingly paid to the development and utilization of more effective, natural and non-toxic biologically-active materials including antioxidants from natural sources such as plants.
Materials and Methods Plant materials and extraction.
FTIR analysis The identification of organic, inorganic, and polymeric materials in C. nutans leaf and stem extracts using FTIR analysis have been recorded.
Najeeb, Antioxidant activity of pomegranate (Punica granatum L.) fruit peels, Food and nutrition sciences (2012)
Ragadhita, How to read and interpret FTIR spectroscope of organic material, Indones.
Online since: August 2012
Authors: S.Y.S. Yahya, Saifollah Abdullah, Suriani Abu Bakar, Mohammad Maryam, Shamsul Faez M. Yusop, Noor Asli Asnida, Mohamad Rusop, Muhammad Salleh Shamsudin, Mohd Amri Johari, S.A.M. Zobir
The thermal sensitivity, TGA is widely used as a quality control tool in the material research and process development for the carbon and related materials [33].
Walker, Carbon: An old but new material revisited, Carbon 28 (1990) 261-279
Rusop, An investigation on the formation of carbon nanotubes by two-stage chemical vapor deposition, Journal of Nanomaterials Vol. 2012 Art.
Samdarshi, Carbon microtubes produced from coconut oil, New Carbon Materials 25 (2010) 321-324
Samdarshi, A green precursor for carbon nanotubes synthesis, New Carbon Materials 26 (2011) 85-88
Online since: July 2011
Authors: Hang Jun Wang, Guang Qun Zhang, Feng Ya Xu
Where, the classroom assessment quizzes is one of the larger flexibility aspects, which can use different teaching methods and different performance appraisal methods according to the characteristics of chapters, such as throwing out questions based on teaching materials or examples by teachers, students thinking with problems, discussing together, or even going to the podium to explain.
Based on respecting for individuality and creativity of students, through free combination, free topics, finding material, and designing work etc. a series of practical aspects, the teacher's role is no longer to oversee and manage the examination process, but provide the project requirements through lectures, guidance and works modifying.
Journal of Hebei Normal University.
Philosophy and Social Sciences Edition.
Online since: October 2011
Authors: Zhao Hua Wu
Introduction The reliability of solder joint depends on many factors including solder joint geometry shape, such as the match of material CTE, the performance of solder creep fatigue, the loading conditions of solder joint thermal / mechanical.
Acknowledgement This work is supported by the Natural Science Foundation of Guangxi(0832242), the Manufacturing System and Advanced Manufacturing Technology Key Laboratory Project of Guangxi(0842006_016_Z).
Chip scale package, design, materials, technology, reliability and application [M].
Guilin Institute of Technology Journal. 2006, 26 (1): 107-110
Online since: March 2011
Authors: Shao Bo Cui, Feng Wei He
Study of applied properties of aminosulphonic acid based superplasticizer Shao-bo Cui a , Feng-wei He b Department of Biological Medicine and Chemical Engineering, Liao Ning Institute of Science and Technology, Benxi 117004, Liaoning , China ateachercsb@yahoo.com.cn , bhfwdd@163.com Keywords: aminosulphonic acid-based, superplasticizer, properties, compatibilities Abstract.
Experiment Materials.Two kinds of water reducing agents were used: ASP systhesized in our laboratory, its characteristics are shown in table 1; FDN produced in a the concrete additives plant in Anhui Province.
HUA: Material and Structrure.
Bassioni: International Journal of Engineering Vol. 3 (2010), pp.577-587
Online since: October 2011
Authors: Qian Zhuang, Guo Guang Wang, Shao Wu Li
Meanwhile, the alkaline substance in the grouting materials of cement and water glass may be dissolved in the underground water, which can be easily absorbed by the tree roots and is harmful to the healthy growth of trees[5].
According to the theory of plant growth, all the physical processes, such as metabolism of plants, material transformation and transport, temperature adjustment and transpiration, require the participation of water.
Geng: Chinese Journal of Underground Space and Engineering.
Gao, et al: Hubei Agricultural Sciences.
Online since: January 2014
Authors: Yu Hang Liao, Wei Lu, Lie Pan
[Tab.1]Configuration parameters of the ejector parameter D0 D1 D2 D3 D4 D5 L1 L2 L3 L4 L5 size/mm 3.6 6.8 14.2 9.2 16.4 18.3 11.7 19.4 35.7 27.6 68.7 [Tab.2]Configuration parameters of the evaporator, condenser and collector Name Type Total area/m2 Heat transfer tube Aluminum fins Material Tube rows Diameter and wall thickness/mm Thickness/mm Pitch/mm Evaporator Level sets of finned-tube 22.5 Seamless 5 Ф10×0.5 0.2 2.2 Condenser Corrugated fin and tube 935.1 Seamless 6 Ф10×0.5 0.15 2 Generator Flooded 4.96 Steel Ф25×2.5 Collector 338 Vacuum Ф47 The system works as follows: Ammonia (state 1) of the hot water in the heating generator generated in the solar collectors, the heat generated by the high pressure ammonia vapor (state 2) enters the injector, to form a high speed air flow through the nozzle, the evaporatorof ammonia vapor (state 3) is sucked into the injector, while maintaining the degree of vacuum and low temperature of the evaporator, to produce refrigeration.
To ensure the cooling effect of the air-cooled condenser than large, air-cooled structure eliminating the need for cooling water system, the entire solar jet refrigeration system needed by detailed calculations to determine the air-cooled and water-cooled two ways Which more and materials and land.
International Journal of Energy Research, 2008, 32(13): 1194-1201
[5] Laboratory of Meteorological Information Center, Meteorological Reference Room, Department of Architecture, Tsinghua University, Technological Sciences.
Online since: June 2013
Authors: Sheng Guan Qu, Zi Bo Ye, Xing Feng Fu, Yong Hu, Guang Hong Wang, Zhong Hui Luo
Wet-type cylinder liner of phosphorus chromium molybdenum cast iron material was made by centrifugal casting.
Acknowledgment This work was supported by open funds of Guangdong key laboratory for advanced metallic materials processing of South China University of Technology (2011010B) and Guangdong polytechnic normal university key disciplines construction funds.
References [1] John Buckingham, Jacob Mann: International Maritime Conference (2010), p. 416-428 [2] Nikolaos Zarzalis, Thomas Ripplinger, Stefan Hohmann, et al: Aerospace Science and Technology, Vol. 6 (2002), p. 531-544 [3] Simon C.
Vol. 37 (2004), p. 517-536 [4] J I Ghojel: International Journal of Engine Research, Vol. 11 (2010), p. 297-312 [5] J.
Online since: March 2017
Authors: Budi Hastuti, Yulia Santrinitas
Therefore necessary to develop an alternative treatment system using cheap materials to separate heavy metals and waste products.
Chitosan was selected as the basis of an adsorbent material for its characteristic that can be attributed as a natural polimer, nontoxicity, biodegradability, biocompatibility, bioactivity and attractive physical and mechanical performance[3,4].
Journal Vol. 143 (2008), p.62–72 [3] B.J.
Crini, Progress in Polymer Science Vol. 30. (2005) p. 38-70 [7] R.A.A., Muzzarelli, Natural chelating polymers.
Showing 91281 to 91290 of 97171 items