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Online since: May 2011
Authors: Jian Feng Zhu, Fang Ni Du, Wen Wen Yang
Synthesis of Al2O3 reinforced TiAl Composites from Ti-Al-Nb2O5 Jianfeng Zhu a, Wenwen Yangb, and Fangni Duc Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China a zhujf@sust.edu.cn, b yangwenwen0909@yahoo.com, c fangni4120706@qq.com Keywords: TiAl, Al2O3, composite, reaction synthesis Abstract.
The resultant in situ formed TiAl/Al2O3 composites exhibited multiplex structures containing TiAl, Ti3Al, Al2O3 and NbAl3 phases.
Online since: October 2007
Authors: Martin Kittler, Teimuraz Mchedlidze, Manfred Reiche, Tzanimir Arguirov, X. Yu, T. Wilhelm
Regular Dislocation Networks in Silicon Part I: Structure T.
The structure on the bonded interface depends on the chemical compositions of the original wafer surfaces.
The dislocation structure depends on the misorientation.
The adjustment marks were transferred to the front side of the wafer by photolithography and dry etching using RIE conditions and a SF6/O2 chemistry.
Both, the twist and tilt components of the misorientation are important for the structure of the network.
Online since: August 2013
Authors: Hui Min Li, Nan Lv
It is very suitable for binding structures which bear heavy loads.
Seismic behavior research of RC structure with post-installed chemically rebar[J].
[5] Lin Hongxiong, Li Quanzhong, Recent advance in structure safety performance testing technology of building adhesive [J].
Chemistry and Adhesion, 2011,33(3): 66-67
[9] YAO Zhengang.Building. structure test[M].Shang Hai: Tongji university press(1996)
Online since: November 2013
Authors: Zulkarnain Zainal, Mohd Zobir Hussein, Weetee Tan, Yingchin Lim
The structure and morphology of TNT is of particular importance with regard to their functionality.
Crystalline structure of the TNT films was determined by X-ray diffraction (XRD, Shimadzu D6000) using Cu Ka radiation (l = 1.5406 Å).
The bottom view FESEM revealed a highly ordered hexagonal closed packed structure for TNT formed in NH4F/EG as shown in Fig. 2(b).
Generally, nanoporous structure (formed between 0.05 to 0.1 wt.% NH4F) showed lower photoresponsethan the tubular morphology (formed between 0.25 to 0.7 wt.%), probably ascribed to the effective diffusion length of electrons to reach the back contact in the tubular structure.
Nanoporous structure was obtained in low fluoride concentration solution (< 0.25 wt.%).
Online since: June 2013
Authors: Yu Qian Cui, Yue Li, Hong Liang Li, Xiu Song Zhao, Pei Zhi Guo, Guo Liang Zhang, Jian Qiang Yu
Zhao1,2,3, g 1School of Chemistry, Chemical Engineering and Environment, Qingdao University, Qingdao, 266071, P.
Therefore, the synthesis of nanomaterials with controlled structure and morphology is important for studying the structure-property relationship of the materials [1].
However, no peak can be seen from the sample obtained at room temperature (Fig. 1b), indicating the existence of amorphous structure.
This was in accord to those structures of CaWO4 with a similar wolframite-type structure, in which six oxygen atoms surround every tungsten atom for tungstates with small cationic radii [14].
Summary FeWO4 NPs with well crystalline structures were synthesized by the hydrothermal treatment of amorphous room-temperature precipitates.
Online since: June 2009
Authors: António M. Cunha, Raul Machado, A.J. Ribeiro, J. Padrão, D. Silva, A. Nobre, J.A. Teixeira, M. Casal, F.J. Arias, José C. Rodríguez-Cabello
The methyl group in the Ala3 residue between the Pro2 and Val4, strongly influences the physical structure of the folded and unfolded states.
In aqueous solution and below the TtS, the water shell around poly(VPAVG) is more closely structured and thus it is more dissolved than poly(VPGVG).
Below the Tt the polymer appears in a disordered state without any structure conformation.
Urry, Journal of Physical Chemistry B. 101 (1997) 11007-11028
Urry, Journal of Physical Chemistry. 95 (1991) 7896- 7900
Online since: April 2016
Authors: Jian Wei Guo, Jin Ping Peng, Chao Liu, Zhi Tan, Hui Min Li, Zhi Wei Xie, Mei Ling Liang
Structure and properties of cellulose.
Fig. 1 show that the chemical structure of cellulose.
Structure and properties determined by the oxidized cellulose with oxidizing agent species and conditions.
Thus, the cellulose structure is changed and its application scope is expanded[18].
[6] Zhang Jingqiang, Lin Lu, et al: Chemistry and Industry of Forest Products , 2008, 28(6): 109-114
Online since: September 2021
Authors: Olga V. Meteleva, Tatyana Komarova, Ludmila I. Bondarenko
Research of the Influence of the Polymer Composition Structure on the Film Material Properties for Special Clothes Production METELEVA Olgaa,*, BONDARENKO Ludmilab, KOMAROVA Tatyanac Textile Institute of Ivanovo State Polytechnic University, Sheremetevskiy Avenue, 21, Ivanovo, Russia aolmet07@yandex.ru, bbondarenko.ivanovo@yandex.ru, cdocent.ta@yandex.ru Keywords: acrylate latex, viscosity, film material, physical and mechanical properties.
The paper presents the influence research results of the structure of the original polymer composition on the resulting films physical and mechanical properties.
The choice of the optimal structure of the studied latexes was the goal for creating polymer compositions of adhesive and non-adhesive layers of self-adhesive film material, respectively.
Hydrophobic materials and coatings: Principles of pops, properties and applications / Chemistry successes, 2008, No. 77 (7), 619-638 pp.
Online since: July 2012
Authors: Jiu Zhou Wang, Cui Zhang, Cheng Yang Wang, Jia Ming Zheng, Ming Ming Chen
Introduction Activated carbons (ACs) are promising electrode materials for electrochemical double-layer capacitors (EDLCs) because of their fine porous structure and stable physicochemical properties [1].
Porous structure parameters of final ACs were tested by N2 adsorption /desorption at 77K on Micrometrics Tristar 3000.
With the increase of pre-carbonization temperature, the amount of the functional groups on the surface would decrease, which would help to demonstrate how the surface functional groups affect the pore structures of final ACs.
Porous structure parameters of samples are shown in table.2.
Wang: Journal of Physics and Chemistry of Solid Vol. 71(2010), p. 214 [7] J.
Online since: October 2012
Authors: Nagamuthuraja Krishna Chandar, Ramasamy Jayavel
Structural and optical properties of the particles elucidated that the Gd3+ ions have substituted the Dy3+ ions without changing the cubic structure of Dy2O3.
In most cases, the introduction of rare-earth trivalent cations in the structure resulted in decreasing particle size.
The XRD showed the formation of pure and Ce:Dy2O3 nanoparticles with the cubic structure with an average grain size of 14 nm and 10 nm respectively.
CRC Handbook of Chemistry and Physics. 4.