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 2006
Authors: Zhi Feng Fu, Bing Chuan Li, Wei Kun Wang, Ke Guo Yuan, An Bang Wang
And the product had been proved to have a sp2 hybride carbon skeleton with polysulfide attached on it, which resembles the theoretical structure of carbyne polysulfide.
The results of IR spectrum and Roman spectrum confirmed the reaction product contained the structure of carbyne polysulfide.
The composite with the structure could effectively prevent the dissolution of polysulfides and improve the lithium cycle property. 0 5 10 15 20 25 30 35 40 50 60 70 80 90 100 Charge/Discharge Effeciency(%) Numbers of Cycle Fig. 7.
Lu, in: The Application of Raman Spectroscopy in Chemistry (Northeast University Press, Shenyang 1998), p. 300
Online since: April 2007
Authors: Qiu Sun, Fu Ping Wang, Ying Song
Effects of Rare Earth Gd Doping on Ferroelectric Properties of PbZr0.52Ti 0.48O3 Thin Films Prepared by Sol-Gel Methods Qiu Sun, Ying Song and Fuping Wang Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, P.R.
The structures of PGZT films were characterized and the ferroelectric properties such as P-V loop, C-V and I-V characteristics were investigated.
The structure of PGZT films was characterized by X-ray diffraction (XRD).
Summary The crystal structure and electrical properties of PGZT films on Pt/Ti/SiO2/Si substrates by a sol-gel technique and a rapid thermal annealing process have been investigated.
Online since: January 2014
Authors: Yue Lei, Lun Li
The application of this kind of green and new material in the exhibition design sector will be beneficial to developing the standardized structure and rapid fabrication in the exhibition design to save the project construction material costs and shorten erection time.
As a structural material, WPC is mainly used as the load bearing and secondary load bearing structure so the material mass must be low with high strength and rigidity as well as tolerance to a certain temperature.
The development of WPC application performance and diversified structure is of great prospect and ecological significance to expanding the application fields of WPC.
References: [1]Wang Qingwen and Wang Weihong, Wood-plastic Composite Materials and Products, Chemistry Industry Press [2]Ji Jianren, Initial Exploration into Wood-plastic Composite Material Processing
Online since: July 2011
Authors: Yi Fan Zhang, Jian Wang
The effects of catalysts on chemical structure of phenol formaldehyde resin was investigated by fourier transform infrared.
Results and discussion In order to compare the difference in the chemical structure of the resins with different catalysts, phenol formaldehyde resin were confirmed with FTIR.
FTIR spectra showed the characteristic absorptions of a benzene structure for PF resin.1609cm-1 indicates the presence of aromatic C=C,1228cm-1 corresponds to asymmetric stretching of C-O,1056cm-1 corresponds to symmetric stretching of C-O and 1612cm-1 corresponds to 1,2,6-trisubstituted benzene ring.
Bibb: Industrial & Engineering Chemistry Vol. 44 (1952), p.1619-1629
Online since: January 2006
Authors: P.F. Kao, S.B. Jiang, Dong Liang Lee, Jui Chang Lin
*Corresponding author, E-mail: t330008@cc.ncu.edu.tw, Fax: 886-3-4254501 Keywords: micro-anode guided electroplating, MAGE, micro-fabrication, 3D micro-structure, localized electro-deposition.
Demonstrative experiments were carried out without chemistry optimization additives.
Some plating results are shown to demonstrate the performance of the equipment in revealing the effects of electroplating parameters without any chemistry improvement additive.
Online since: June 2019
Authors: Alexey V. Zaikovskii
The material consists of graphite structures and SiC nanoparticles (Fig. 2(b)).
The D-peak appears only at edges and defects of a graphite structure and corresponds to a respiratory mode of oscillation of hexagonal rings of a graphite structure.
The detailed study of the crystal structure of the nanoparticles using HRTEM showed that the structure corresponds to P6(3) mc symmetry of moissanite (SiC) (Fig. 3(c),(d)).
As a result, the graphene structures presented in the material straighten and get edges (Fig. 6).
Plasma Chemistry and Plasma Processing 4 (1984) 59-72
Online since: January 2012
Authors: Wang Ping Wu, Zhou Chen, Teng Zhou Xu, Jie Ming Zhou, Zhao Feng Chen, Xue Yu Cheng
Glass fibers have non-flame, non-toxic, antisepsis, light volume-weight, low heat conduction factor, good chemistry stability, low water absorption coefficient and good hydrophpbic coefficient.
A VIP is consists of a core material with a micro-porous structure, a vacuum-tight envelope to maintain the inside vacuum and a getter or desiccant to adsorb various gas flowing into the vacuum [1].
The finer structure the material is and the more thermal resistances are built into the insulating material, the solid conductivity λS is the smaller [8].
Online since: January 2012
Authors: P. Ramesh Narayanan, G. Sudarshan Rao, K. Saravanan, V.M.J. Sharma, G Harikrishnan, K. Sreekumar, Parameshwar Prasad Sinha
Local Deformation Behavior of Inconel 718 TIG Weldment at Room Temperature and at 550°C Sudarshan Rao.G1, a , Saravanan.K 2, a, Harikrishnan.G 3, b, Sharma VMJ 4, a, Ramesh Narayanan P5, a, Sreekumar K6, a, Sinha PP7, c aVikram Sarabhai Space Centre, Trivandrum, INDIA, bLiquid Propulsion Systems Centre, Trivandrum, INDIA 1g_sudarshan@vssc.gov.in, 2k_saravanan@vssc.gov.in, 3g_harikrishnan@lpsc.dos.gov..inin, 4vmj_sharma@vssc.gov.in, 5ramesh_narayanan@vssc.gov.in, 6k_sreekumar@vssc.gov.in, 7pp_sinha@vssc.gov.in Keywords : Inconel 718, TIG welding, local deformation, high temperature, mechanical properties Abstract: The weld portion will have different mechanical properties in weld bead, HAZ and fusion boundary due to variation in the microstructure, chemistry and internal stresses that arise in the welding process.
It is important to notice that this lower proof stress has to be accounted for while designing the structures with weld where the weld is weaker than the parent metal.
This study has demonstrated that the laser extensometery can be a very useful research and development tool for the evaluation of local deformation and stress-strain behaviour of composite structure in the weldments.
Online since: July 2014
Authors: Wei Bing Li, Chun Chen, Jun Liu
Numerical simulation of cook-off for passive RDX Chen Chun1, a, LI Weibing1, b, Liu Jun1, c 1ZNDY of Ministerial Key Laboratory, Nanjing University of Science and Technology, Nanjing, 210094, China aemail: saver120@163.com, bemail: njustlwb@163.com, cemail: a1029810484@163.com, Keywords: Physical Chemistry; Passive RDX; Heating rate; Charge density; Numerical simulation Abstract.
A composite charge structure had been investigated numerically and experimentally by Xiang mei al[5].They found that embedded high-energy grain in insensitive explosive can effective improve its thermal safety.
Online since: October 2010
Authors: Radostina Stoyanova, Dany Carlier, Meglena Yoncheva, Ekaterina Zhecheva, Claude Delmas, Marushka Sendova-Vassileva
When the Na-to-Mn ratio is equal to 1, the O3 type structure is stabilized.
Due to the appearance of Jahn-Teller Mn3+ ions, the layered structure is monoclinically distorted.
With the decrease of the Na-to-Mn ratio from 1.0 to 0.7, the P2 structure becomes stable [4,6-8].
Fig. 2 shows the Raman spectra of the Na2/3MnO2 samples with orthorhombic structure (NMO-1000) and mixed phase with orthorhombic and layered hexagonal crystal structure (NMO-420).
It has a broad structure consisting of poorly resolved bands.