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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.

Effects of Chemical Compositions of Welding Rods on J-R Fracture Resistances and Tensile Properties of Type 347 Welds Ji-Hyun Yoon1,2,a, Bong-Sang Lee1,a and Eui-Pak Yoon2,b 1 Nuclear Materials Division, Korea Atomic Energy Research Institute 150 Deokjin-dong, Yuseong-gu, Daejeon, 305-353, Korea 2 Division of Advanced Materials Science Engineering, Hanyang Univ. 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Korea a jhyoon4@kaeri.re.kr, bbongsl@kaeri.re.kr, cepyoon@hanyang.ac.kr Keywords: Type 347, Weld, Austenitic stainless steel, Surge line, Carbon, Nitrogen, Niobium, J-R, Tensile, Nb(C,N) Abstract.
However, there has been relatively little research directed towards the effects of welding materials on mechanical properties of type 347 weld which was deposited by gas tungsten arc welding (GTAW) method [3,4].
Optical micrograph showing typical γ-δ duplex microstructure of type 347 weld Experimental Material.
DeLong: The Welding Journal July (1974), p. 273s
SEM-EDS analysis for ppts providing void initiation sites in SS347W-1 weld. [5] ASTM, E 8: Standard Test Method for Tension Testing of Metallic Materials (ASTM, USA, 2001)

Concrete is a porous material. 
Acknowledgements This work is financially supported by the National Natural Science Foundation of the P.
Construction and Building Materials,1997,11(7): 413
[22] American Society for Testing and Materials.
ACI Materials Journal, 1992，89(1):49-53

Experimental Materials Plain-weave cotton, silk and nylon fabrics with the weights of 120, 95 and 170 g/m2, respectively, were used.
It is derived from natural renewable resource materials such as corn and cassava [7].
Her research interests are in eco-textile fields including bio-based materials, agricultural waste utilization for textiles and dye synthesis for cleaner dyeing technology.
Vol. 33(6) (2004), p. 329 [5] Preferred Fiber & Materials Market Report 2018, in Textile Exchange (2018) [6] R.S.
Na Phatthalung : Applied Mechanics and Materials Vol. 535 (2014), p. 641 [15] J.

Due to their high strength, exceptionally good fracture toughness and wear, corrosion as well as fatigue resistance, maraging steels are considered as important materials for space, military, automobile, tooling and other commercial applications.
Materials Methods Hot rolled conventional maraging steel was obtained from M/s Bharat Aerospace, Mumbai, India.
Jarfors, Taishi Matsushita, Dimitrios Siafakas, Roland Stolt,`On the nature of the anisotropy of Maraging steel (1.2709) in additive manufacturing through powder bed laser-based fusion processing’, Materials & Design, 204, (2021),109608, [2] Branco, Ricardo, José DM Costa, Filippo Berto, Seyed Mohammad Javad Razavi, José A.
Materials Science and Engineering: A 798 (2020): 140130
Thompson, Alaa Elwany, Linkan Bian, `Effects of building orientation and heat treatment on fatigue behavior of selective laser melted 17-4 PH stainless steel`, International Journal of Fatigue,Volume 94, Part 2, (2017), 218-235, [6] Wang, B.; Zhang, P.; Duan, Q.Q.; Zhang, Z.J.; Yang, H.J.; Li, X.W.; Zhang, Z.F.

These semiconductor materials are used as; photoconductors [6-8],active layer in solar cells and opto-electronic devices [9-11], holographic recording systems and electrical switching [12].
Berger, Semiconductor materials, CRC press, New York, (1997)
Benosman, Opto-electronic properties of rutile SnO2 and orthorhombic SnS and SnSe compounds, Materials Science and Engineering: B ( 2003) 104–115 [12] D.
Cheon, Two-Dimensional SnS2 Nanoplates with Extraordinary High Discharge Capacity for Lithium Ion Batteries, Advanced Materials 20, 4269 (2008)
Gedanken, Microwave-assisted synthesis of tin sulfide nanoflakes and their electrochemical performance as Li-inserting materials Journal of Solid State Electrochemistry 11, 186 (2007)

J. of Materials and Design, (2009) vol. 30 (8) pp. 3308-3312
J. of Material Science and Eng.
J. of Metals and Materials, (1998) vol. 4, No. 4, pp. 727-731
Russian Journal of Non-Ferrous Metals. (2009) vol. 50 pp. 221-227
J. of Materials Processing Technology (2002),vol. 125-126 pp. 725-730.