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Online since: February 2011
Authors: Xiao Meng Lü, Hui Zhang, Ji Min Xie, Jia Yi Hua, Su Wen Sun
This excellent catalytic effect may have a relationship with its special crystal structure [3].
Characterization of products XRD patterns were measured to determine the crystal structure by D/max-RA diffractometer with Cu Kα radiation (30 kv and 50mA).
All of the powders exhibited a single phase, and all of the reflection peaks were indexed as orthorhombic structure(JCPDS No. 36-0404).
It is concluded that the local crystal structure of Cu2(OH)PO4 changed as the morphology was varied by changing the preparation pH.
The absorption of visible caused by the surface structure of sample.
Online since: September 2013
Authors: Zhong Hua Du, Tao Zhou, Li Li Song
The MEFP warhead structure was proposed by Yin JianPing and Wang ZhiJun, and the detonation wave formation and growth to be carried on the thorough analysis [2,3].
This EFP is based on linear charge structure and beneficial to the detonation wave collision, two ends cover to intermediate closed to form high velocity penetrator.
Based on the annular MEFP structure, this paper studied the influence of axis circumferential curvature on the new annular MEFP, to form closed and high penetrator.
Due to the charge structure is different, the time and position at when the detonation wave fronts act on the liner are difference in different radius of curvature.
The formation process of single EFP In the same structure charge, detonation pressure and collision pressure changes little, so the penetration body formation is mainly deceased by the liner structure.
Online since: February 2015
Authors: Tamara S. Minakova, Elena B. Daibova, Valeriy S. Zakharenko, Irina A. Kurzina, Alla B. Zotova, Natalia Kosova
Particles of troposphere solid aerosol consist of a number of compounds having definite chemical and crystalline structures [2].
Heterogenous chemistry of the low atmosphere, Physics and Chemistry of atmosphere Aerosols. 20 (1997) 54-80
Online since: August 2015
Authors: Hardev Singh Virk, Kalpana Sharma, Neetu Neetu, Anupam Anupam, Shyam Kumar, B. Rani
Huheey, Inorganic Chemistry-Principles of Structure and Reactivity, 2nd edition, Harper and Row Publishers, New York, 1978
Weast (Editor in Chief), CRC Handbook of Chemistry and Physics, Ist student edition, CRC Press, Florida, 1988
Online since: September 2013
Authors: Zhong Yi Cai, Mi Wang, Zhen Yang, Kun Peng
This forming method is a change to the traditional stretching technology, the forming equipment based on this principle has a compact structure so the cost of equipment is cheap, and this method can be used in a wide range of areas.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Online since: August 2014
Authors: Dong Li Li, Wen Cai Xu, Ya Bo Fu, Zhen Lu Zhang, Rui Juan Liao
Especially for C60 and other emerging POSS-retardant materials, due to their lack of systematic and in-depth study, reveals of flame retardant mechanism need more efforts.In addition, based on the relationship between structure and morphology, microstructure and chemical composition of the flame retardant mechanism need system-depth exploration.
,Fang,Z.P.Fabrication of dendrimer-like fullerene (C60)decorated oligomeric intumescent flame retardant for reducing the thermal oxidation and flammability of polypropylene nanocomposites.Journal of Materials Chemistry.2009,19,1305-1313
Chemistry of materials.2000,12,1866一1873
Online since: April 2003
Authors: Hasan Mandal, Servet Turan, Alpagut Kara, Ferhat Kara
In spite of difficulties mentioned above, an interest has been recently regenerated in SiAlONs due to better understanding of its chemistry.
EDX analysis (not given here) also showed that sintering additives either entered the α-SiAlON crystal structure or remained in crystalline or amorphous secondary phase.
Conclusions By careful design of grain boundary chemistry (starting composition and sintering additives), new α-β SiAlON ceramics can be produced and successfully used in machining operations. 10 References [1] G.
Online since: April 2004
Authors: Tetsuo Shoji, Yo-ichi Takeda, Zhan Peng Lu
Surface film properties, such as structure, composition, and morphology for austenitic stainless steels in simulated LWR environments have been studied by many researchers[1-8], mostly by ex-situ measurement of the oxide film at room temperature.
In the slip-dissolution model[17] and FRI model[18] for SCC in BWR normal water chemistry, the repassivation process is expressed by a power-law current decay.
Kim, Characterization of the oxide film formed on type 316 stainless steel in 288C water in cyclic normal and hydrogen water chemistries.
Online since: January 2013
Authors: C.H. Liu, A. Yella, B.Q. Li, K. Bandyopadhyay
A salient feature of this class of nanoparticles is that the localized surface plasma resonance, contributed by the collective oscillation of the conduction band electrons in a gold nanoshell, can be tuned to a light source from visible light to near infrared region (NIR) by varying core/shell structure parameters [1,2].
Molecular self-assembly and colloid chemistry techniques are used in the fabrication.
Calata, and G, Lu, Chinese Journal of Chemistry, Vol.27(6) (2009), p.1079 [17] A.
Online since: April 2020
Authors: Mudasir Mudasir, Dini Elsi Aminy, Bambang Rusdiarso
Cadmium (Cd) has received much attention because it can change the stereo-structure of an enzyme that can inhibit enzyme catalytic activity [7].
Manahan, Fundamental of Environmental and Toxicological Chemistry, CRC Press, Baco Raton, 2013
Adamson, Physical Chemistry of Surfaces, fifth ed., John Wiley and Sons Inc., New York, 1990.