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Online since: December 2010
Authors: Jian Hua Shao, Zai Hui Wang, Guang Ya Tao
Research on the Unloading Process of Long-Span Steel Roof and the Design of Temporary Bracing Structure Jianhua Shao1,a, Zaihui Wang2,b, Guangya Tao3,c 1School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang Jiangsu 212003, China; 2Zhenjiang Huahang Engineering Cost Consulting Co.
The design load combinations are the followings: (1) 1.35×Dead load + 0.7×1.4×Live load (2) 1.2×Dead load + 1.4×Live load + 0.6×1.4×Wind load (3) 1.2×Dead load + 0.7×1.4×Live load + 1.4×Wind load (4) Dead load + 0.7×Live load + Wind load (5) Dead load + Live load + 0.6×Wind load The standard value of permanent load is determined from the design size of steel member and self weight of material per unit volume and the imposed dead load is given according to the actual supporting position of temporary bracing structure during the construction of steel roof.
(In Chinese) [4] Jinsheng Jiang, Keming Ye: Journal of Building Structures, 2006,27(5):118-122.
(In Chinese) [5] Xiaoping Wu, Zhenfeng Gao: Journal of Building Structures, 2005,26(5):40-45.
(In Chinese) [9] Yanlin Guo, Yufei Guo, Xuewu Liu: Journal of Architecture and Civil Engineering, 2007,24(1): 52-58.
Online since: January 2015
Authors: Jing Guo, Yi Luo, Qi Zhong, Yun Feng Sui, Dan Qing Yan
Fortunately, LFMCW radar is able to detect small FOD 300 meters way (up to 500 meters away depending on the object material and size).
Acknowledgment This work is partially supported by the National Natural Science foundation of China (No. 61139003) and research foundation of CAAC.
Lindeberg, Feature detection with automatic scale selection, International Journal of Computer Vision, 30 (2): pp 77–116, 1998 [12] T.
International Journal of Computer Vision, 60 (2): pp 91–110, 2004 [14] H.
CVPR, 2005 [16] Herve Jegou, Matthijs Douze, Cordelia Schmid, Improving bag-of-features for large scale image search,International Journal of Computer Vision, V 87:3, 2010 [17] J.
Online since: March 2014
Authors: János Lukács, Marcell Gáspár
Investigations Materials and welding characteristics.
The mechanical properties and calculated values of the investigated materials.
Specimens for FCG test cut from welded joints of S690QL and S960QL materials.
The examinations of the base materials and welded joints should be continued.
Lukács, Fatigue crack propagation limit curves for different metallic and non-metallic materials, Materials Science Forum, 414-415 (2003) 31-36.
Online since: April 2015
Authors: Mahmoud M. Tash, Khaled A. Abuhasel, Saleh A. Alkahtani
Introduction Aluminum-silicon (Al-Si) alloys are an important class of materials that constitute the majority of aluminum cast parts produced, due to their superior properties and excellent casting characteristics.
This project was supported by the deanship of scintfic research at Salman bin Abdulaziz University under the New Faculty Member Program research project #.2013/01/137" References [1] Cáceres, C.H., Svensson, I.L., Taylor, J.A., “Strength-Ductility Behaviour of Al-Si-Cu-Mg Casting Alloys in T6 Temper,” International Journal of Cast Metals Research, vol 15, pp 531-543 (2003)
Chou, Materials Science Forum, Vol. 75, 1992, pp. 102-104
[14] Tash, M., Samuel, F.H., Mucciardi, F., Doty, H.W., Valtierra, S., “Effect of Metallurgical Parameters on the Machinability of Heat-Treated 356 and 319 Aluminum Alloys,” Materials Science and Engineering A, vol 434, pp 207-217 (2006).
Online since: February 2004
Authors: Kenji Higashi, Tsutomu Tanaka, Koichi Makii, Atsumichi Kushibe, Seiya Furuta, Kazuo Aoki
The designer must overcome the strain localisation resulting from the low work-hardening rate, which is the intrinsic character of superplastic materials.
Fig. 5 shows the relationships between cumulative strain and stress for both materials.
This results from the intrinsic temperature dependence of yield strength with superplastic materials.
Thanks also the sponsorship for Innovation Plaza Osaka, Japan Science and Technology Corp.
Tanaka et al: Materials Transactions, JIM, Vol.43 (2002), p2449-2454 [10] T.
Online since: December 2012
Authors: Mei Peng Ren, Xiang Fang Li, Fu Quan Shi, Long Ma
With analysis of mechanics of materials based on shut-in water hammer pressure and wellhead pressure while rescuing, and fluid mechanics of uncontrolled blowout based CFD, a rescue equipment for uncontrolled blowout in offshore drilling has been invented, and proposing a rescue method.
Procedures are made below based on that concept: 1)Keep all the choke valves and BOP opened and trip in the new device with drill pipe; 2)With the help of the ROVs, lay the device over the well then shut off the Chunk at the bottom of it; 3)Connect the kill pipe to the two Choke valves at the bottom of the device, pump seal material as cement to the annulus between the device and the original well, waiting on cement; 4)After cement, close the BOP of new device, try to shut some valves, allow some of kick fluid flow out through Choke valves, then the pressure on the new well head would be reduced; 5)Connect riser to the new BOP, trip in against pressure and start to killing operation.
Journal of southwest petroleum university(science & technology edition), 2009,31(4):117-121 [15] Li Shilun.
Online since: November 2012
Authors: Yi Fei Weng
The Current Situation and Future Prospect of Advanced Human-machine Engineering’s Application in Coalmine Yifei WENG (North China Institute of Science and Technology, Beijing, P.R.
Noise is full of a variety of hazards: damaging to human’s hearing; affecting human's normal work; interfering with conversation; leading to various diseases; with stimulation of strong noise, that human’s awareness is difficult to concentrated causing errors easier in working, especially on those complicated work with high requirement of high awareness concentration; high-power noise impeding the normal operation of the equipment, resulting in the incorrect information, and even the metal materials’ damage of the fatigue by noise, for example, the noise from the pneumatic drills, picks, local fan and other electrical and mechanical equipment hindering human to distinguish the sound before rock moving or roof falling, and causing the accident.
According to the solution to complex science provided by Mr.
Acknowledgements This work was financially supported by the State Administration of Work Safety Science & Technology Project Foundation (20110512).
Journal of Beijing Metropolitan Institute, 2003(4):pp77-81 (In Chinese)
Online since: May 2019
Authors: Duangporn Polpanich, Venusrin Paripurana, Goragot Supanakon, Kulachart Jangpatarapongsa, Patcharapong Teawprasong
Preparation of pH-Responsive Nanoparticles (PRNPs) for Detection of Pathogenic Escherichia coli from Stool Sample of Diarrheagenic Patients Patcharapong Teawprasong1,a, Duangporn Polpanich2,b, Venusrin Paripurana1,c, Goragot Supanakon2,d, Kulachart Jangpatarapongsa1,e 1Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, 73170, Thailand 2National Nanotechnology Center, National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani, 12120, Thailand apatcharapong.teawprasong@gmail.com, bduangporn@nanotec.or.th, cvenusrin.p67@gmail.com, dgoragot.sup@nanotec.or.th, ekulachart.jan@mahidol.ac.th Keywords: pH-responsive nanoparticle, MELGA, modified MELGA, enterotoxigenic Escherichia coli Abstract. pH-responsive nanoparticle (PRNP) is one of the most thoroughly studied encapsulation systems in the field of nanomedicine especially therapeutic approaches, due to their controllable reaction in the particular
Materials and Methods Bacteria and bacterial DNA preparation.
Acknowledgements The scholarships from National Science and Technology Development Agency (NSTDA) under The Thailand Graduate Institute of Science and Technology (TGIST) (TG-55-14-59-038M) to P.T. are gratefully acknowledged.
Journal of Colloid and Interface Science. (2016);463:279-87
Online since: March 2018
Authors: Muhammad Ghozali, Agus Haryono, Sri Budi Harmami, Yenny Meliana
Introduction In recent years, ionic interaction between polyelectrolyte and ionic surfactants are attracting in polymer science.
In recent years, this interaction solution have been used in polymer science [3], industrial or pharmaceutical to control stability, rheology and disperse in water.
Methodology/ Experimental Materials 1,2-dichloroethane, cetyl trimethyl ammonium bromide (CTAB), sodium hydroxide (NaOH) and H2SO4 (96%) were obtained from Merck, polystyrene (PS) and cellulose dialysis membrane were bought from Sigma-Aldrich with average molecular weight (Mw) of PS has been 350,000 g/mol, phenol phthalein (pp) indicator was obtained from Merck and distilled water has been used for preparing samples.
Res., Vol. 486 (2012), p 426 [17] Movchan, T.G., Plotnikova, E.V and Us’yarov, O.G: Colloid Journal Vol 75 (2013), p 319 [18] Y.
Membrane Science, Vol. 173 (2000), p 17 [22] R.
Online since: January 2025
Authors: Muhammad Hamza, Ahmed Ijaz, Hamad Ali, Ali Raza
Introduction FRP materials are composite materials widely used in Aviation, automotive, and construction industries.
They are providing alternative solutions in comparison to conventional materials.
These materials have garnered attention for their properties [3].
Materials Today: Proceedings, 2021. 43: p. 1003-1008
Civil Engineering Journal, 2018. 4(8): p. 1917-1929
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