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Study on Seismic Performance of Irregular RC Frame with Specially Shaped Columns Jian Tang1, a , Lang Wu 2,b 1College of Civil Engineering, JiangXi Science&Technology Normal Univercity, Jiangxi Nanchang 330013, China 2College of Civil Engineering, Nanchang Institute of Technology, Nanchang 330044, China a tjwmr@163.com,bwulang19812005@126.com Keywords: specially shaped column; RC frame; nonlinear seismic response analysis; seismic performance Abstract: According to the code and technical regulation, a irregular RC frame with specially shaped columns have been designed, which situated at the area of fortification intensity 7.
This article adopt nonlinear dynamic analytic procedure of fiber model of beam-column elements formation based on flexibility method that cross-section of beam-column element is discretized into a number of vertical fiber, ignoring the shearing effect and considering each fiber in a unidirectional stress The fiber model also consider lateral constrained influence in the uniaxial stress-strain relationship, and use plane-section assumption to create beam-column element stiffness matrix for calculating the nonlinear relationship of force and deformation of the total cross section on the basis of uniaxial stress-strain relationship of corresponding fibrous materials.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (Grant No. 50478067“researches on 3D inelastic seismic response analysis methods and integrated seismic performance of reinforced concrete structure with specially shaped columns”) and University research projects (Grant No.
International Journal of Earthquake Engineering and Structural Dynamics, 1996,25(7):711-725
Advanced Materials Research, v243-249, p 5152-5156,2011

Study on Solvent Extraction of Citric Acid from Fermentation Broth Hui Ju1,a, Qifeng Wei1,b, Xiulian Ren2,c,Yongxing Chen3,d and Huishuan Dong3,e School of Marine Science and Technology, Harbin Institute of Technology, Shandong, Weihai, 264209, China ajuhuihit@126.com, bweiqifeng163@163.com, crenxiulian@126.com, dchenyongxing1987@163.com, edonghuishuan@163.com Keyword: Citric acid; Solvent extraction; Complex; Surface tension Abstract: Extraction of citric acid from aqueous solutions with tertiary amine, dissolved in mixtures of kerosene and phase modifier have been studied as a function of exaction yield at different phase modifier volume fraction, temperatures, stirring speed and exaction time.
Experimental techniques Materials The water used in this work was deionized by a Millipore Milli-Q system.
The materials used are citric acid solid which has an analytical purity of 99.5%. 1-octanol, isooctanol, kerosene and tertiary amine are of reagent grade and are used without pretreatment.
Yasar: Journal of Food Engineering Vol. 70 (2005), p. 518-522 [4] V.
Tomovska: Chemical Engineering Science Vol. 53 (1998), p. 3227-3237 [9] Y.Y Dai, W.

Experimental material and the performance parameters.
Experimental material is brass H62.
Acknowledgement Summary The authors would like to thank the supports of the National Natural Science Foundation of China (Grant No. 51075064) and the National Youth Natural Science Foundation of China (Grant No. 51205053).
Journal of Tianjin University, 2000(6): 740-742
Grinding on Difficult-to-mMachine Material[M].

Therefore, knowing dependences between the forces impacting on the manipulator drives and the manipulator eccentricity presents a strong business case for the science.
Naukova Vesna, 2013, Materials of the scientific and practical conference.
Naukova Vesna, 2013, Materials of the scientific and practical conference.
Springer Science + Business Media, LLC 2006. 894
Scientific journal of the National Mining University, 3, 53–60.

Germanium in Czochralski Silicon Deren Yanga and Jiahe Chen State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, People's Republic of China a Email: mseyang@zju.edu.cn Keywords: Silicon, Germanium doping, Mechanical strength, Oxygen precipitation, Voids.
Yan: Journal of Heibei University of Technology 25 (1996) 12
Zhang: Journal of Synthetic Crystals 29 (2000) 51
Chen: Chinese Journal of Semiconductors 23 (2002) 1073
Sun: Chinese Journal of Semiconductor 24 (1999) 15

Suresh: Fatigue of Materials, 2 nd edition (Cambridge University Press, Cambridge, 1998) [3] P.C.
[12] ASTM Standard E647, American Society for Testing of Materials (1996)
Riddell: Fatigue and Fracture of Engineering Materials & Structures, Vol 18 (1995) p. 157
Nogata: Key Engineering Materials, Vol. 270-273 (2004) p. 2164
Nagy: Journal of Physics E: Scientific Instruments, Vol. 11 (1978) p. 207

Moreover, production requires large amounts of fossil and electrical energy, and precious raw materials.
Materials and Modeling Approach Sagoe-Crentsil et al. [11] studied the mechanical properties of PC-based concrete cylinders (continuously stored under moist conditions for up to 365 days) made with recycled coarse aggregate.
This is associated with the mechanical and durability properties of cementitious materials.
Stroeven: Discrete Numerical Model for the Structure Assessment of Composite Materials, Ph.D.
Metha: Chemical and physical effects of silica fume on mechanical behavior of concrete, ACI Materials Journal, Vol. 86 (1989), pp. 609-614

Introduction At present, fiber reinforced composite materials are widely used in the aerospace field because of their low weight, high strength and high modulus [1].
The composite materials are mainly used in the form of thin-walled stiffeners panels in the wing, tail and fuselage of aircraft.
Considering the factors of different materials, layers, ribs and geometric sizes, an EC method for composite stiffened panels with various combinations is established.
Applied Composite Materials, 2012, 19(1): 79-96
Mechanics of Advanced Materials and Structures, 2019, 26(3): 215-223.

Hasegawa3, c 1The Oarai Center, Institute for Materials Research, Tohoku University, Oarai, Ibaraki 311-1313, Japan 2Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan 3Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan akuramoto@imr.tohoku.ac.jp, bnagai@imr.tohoku.ac.jp, chasegawa@imr.tohoku.ac.jp Keywords: positron annihilation, reactor pressure vessel steels, irradiation hardening, atom probe tomography, solute nano-clusters, vacancy-related defects, isochronal annealing Abstract.
We have reported the dependence of the microstructural changes and hardening of the same materials on fluence [5] and the PIA behavior of the same 1stGENS [6]. 2.
The samples were neutron-irradiated at Japan Materials Testing Reactor (JMTR) to 3.9 × 1019 n cm–2 (0.061 displacements per atom (dpa)) with a flux of 1.8 × 1013 n cm–2 (2.8 × 10–8 dpa s–1) at 290 °C ± 2 °C.
Acknowledgements This work was partially supported by Grant-in-Aids for Scientific Research of the Ministry of Education, Culture, Sports, Science and Technology (Nos. 17002009 and 21246142).
Nishiyama, submitted to Journal of Nuclear Materials (2011) [7] Y.

The cracking then spreads and later leads to complete failure of the material.
Material.
LO1408 “AdMaS UP - Advanced Materials, Structures and Technologies”, supported by Ministry of Education, Youth and Sports under the “National Sustainability Programme I” and under the project TAČR No.
De Belie, Performance of Cement Based Materials in Aggressive Aqueous Environments, State-of-the-Art Report, RILEM TC 211 - PAE, Springer Science + Business Media, Dordrecht, 2013
International Journal of Advanced Structures and Geotechnical Engineering, 01/01 (2012) 15-18