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Online since: August 2018
Authors: Prabhat Ranjan, Tanmoy Chakraborty
Truhlar, Density functional theory for transition metals and transition metal chemistry, Phys.
Yang, Density functional theory of the electronic structure of molecules, Annu.
Parr, Density functional theory of electronic structure, J.
Chu, Structures and charge distributions of cationic and neutral Cun-1Ag clusters (n=2-8), Phys.
Tang, Size dependence of the structures and energetic and electronic properties of gold clusters, J.
Online since: August 2014
Authors: Qi Gen Tong, Xin Wang
At present, the structure of the eggs has been studied, but the structure of the egg yolk with few related reports.
Due to observe the macro structure and micro structure of the egg yolk and found yolk three levels have significant difference, so the next step should be on the three levels of component content for further identification.
In order to get more accurate details of the structure of egg yolk components analysis.
Journal of agricultural and food chemistry, 2009, 57(10): 4218-4223
The structure of the yolk of the hen's egg as studied by electron microscopy I.
Online since: October 2013
Authors: Martina Vikova, Michal Vik
Moreover textile based sensors and active protective textiles has advantages that textile structure is easy customizable by sewing, thermal bonding or gluing.
Pigment P2 (Purple) is oxazine-based structure in comparison to naphthopyran-based pigments P1 (Blue) and P3 (Yellow).
H., editor, Techniques of Chemistry, Vol.III, Photochromism, John Wiley & Sons, New York, First edition (1971)
In: Reviews in Computational Chemistry, 1, VCH New York, 45-81 (1990)
J., editors, Photochemistry and polymeric systems, Royal Society of Chemistry, Cambridge (1993) [10] Dürr, H., Bouas-Laurent, H., Photochromism, Molecules and systems, Elsevier, New York, (1990) [11] Bamfield, P., Chromic phenomena, Technological Applications of Colour Chemistry, The Royal Society of Chemistry, Cambridge, (2001)
Online since: January 2014
Authors: Shi Hong, Zhu Qing
It is pointed out that the microwave technology can reduce the time and energy consumptions of the polymerization reaction, and improve the properties of polymeric reaction rate, yield and selectivity, which will play an important role in the green chemistry synthesis of polymers.
The application of the microwave technology in chemistry started with the discovery of Gedye.
Its structure is shown in figure 1.
Unfortunately, the research has no study on the relationship between network structure and curing methods of the polymer, only to do some speculation according to the experimental results.
The application of the microwave processing technology in the polymer materials Recently we started the construction of the polymer structure and the properties of microwave absorption.
Online since: November 2011
Authors: Li Wang, Di Weng, Jun Bo Wang, Xue Song Chen, Xiao Lu Xu
Determination of crystal ingredient and structure.
XRD was also used to analyze the crystals structure.
Zhao, Analytical Chemistry, third ed., Higher Education Press, Beijing, 1982
Dean, Lange’s hand book chemistry, Science Press, Beijing, 2003
Ma, Analysis Chemistry Fundamental, Chemistry Industry Press, Beijing, 2004
Online since: April 2005
Authors: Josh Wolf, Brian White, Han Xu, Amy Shen, Vlad Tarasov
Serpentine and comb test structures were used for electrical test data.
The comb structure is used to measure capacitance of the low-k dielectric between Cu lines.
Strip process with reducing chemistry.
A reducing process with N2/H2 chemistry was developed first.
Strip process with diluted O2 chemistry.
Online since: August 2014
Authors: Tian Tian Zhang, Hong Ya Li, Biao Yan
The stability of copper catalyst in treating the Acid Red B wastewater Hongya Li 1,a, Tiantian Zhang 2,b, Biao Yan 3,c 1School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, China 2College of Chemistry and Chemical Engineering, Longdong University, Gansu 745000, China 3School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, China a lihongya0521@163.com, bzhangttbetter@126.com , bdonghuhai@qq.com Keywords: stability, coprecipitation, wastewater, catalytic wet air oxidation Abstract: The copper catalyst was prepared by coprecipitation method and used for treating the Acid Red B wastewater with catalytic wet air oxidation method.
When the concentration of the precipitating agent increased, the particles became smaller and the specific surface area increased, so the stability of the catalyst increased, and it increased faster when used (NH4)2CO3 as precipitating agent, but when the concentration was too large, the flaw in the crystal structure was more easily produced, then the amount of copper dissolving increased and the stability of the catalyst decreased.
The calcination temperature can change the grain size, pore structure and chemical state of the catalyst.
Joshi: Industrial & Engineering Chemistry Research Vol. 3 4 (1995), p. 2-48
Yue: Industrial & Engineering Chemistry Research Vol. 38 (1999), p.1837-1843
Online since: October 2010
Authors: Xiu Tao Ge, Jun Hai Wang, Ding Wang, Jiaqiang Xu
The Preparation of ZnO Gas-sensing Material by Nucleation- Crystallization Separation Method Xiu-Tao Ge 1,a, Jun-hai Wang 1,b, Ding Wang 2,c and Jia-qiang Xu 2,d 1Department of Chemistry and Life Science, Chuzhou University, Chuzhou 239012,China 2Department of Chemistry, College of Science, Shanghai University, Shanghai 200444,China aemail, gext59228@126.com, bemail, wjh166@163.com, cemail, Wangding@shu.edu.cn, demail, xujiaqiang@shu.edu.cn Keywords: Nucleation-Crystallization Separation; ZnO nanoparticles; Gas-sensing materials Abstract.
The structures and formed phase temperature of the samples were researched by X-ray diffraction (XRD) and DSC -TGA.
Characterization The structure of the obtained powder was studied by X-ray powder diffraction (XRD; Cu Kα radiation, degree range: 20-80°).
The electrodes structure was shown in Fig. 1.
Fig. 1 Structure of gas sensor Fig. 2 The measuring electric circuit of gas sensor Result and discussion Characterization of the ZnO samples Fig. 3 shows the typical XRD patterns of the as-prepared ZnO samples.
Online since: May 2021
Authors: Wan Qiu Ding
It is the goal of this paper to define the evolution of the chemistry and mechanical properties of this class of alloys by focusing on the advantages and drawbacks resulting from these chemistry changes [5,6].
To alter or remove grain boundaries, directional solidification is utilized to manufacture columnar grain or single crystal structures.
The aforementioned process is preferable when using casting elements with similarly shaped structures.
The traditional structure of a Bridgman furnace includes both the heater and cooling chill encompassing a cylindrical formation.
The equiaxed solidification stimulates the formation of randomly oriented grains, causing the structure to become polycrystalline.
Online since: July 2012
Authors: Hui Qun Cao, Hong Wei Mi, Hong Yuan Sun, Jian Hong Liu, Shuang Quan Wu, Han Ping Zhou, Jing Zhong Chen
China 2 College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, P.R.
Surface chemistry, crystalline and pore structures of the GCMs are characterized by scanning electron microscope, power X-ray diffraction and N2 adsorption respectively.
LANO having a similar structure with PAN was prepared by the laboratory.
The crystalline structure was obtained by X-ray diffraction (XRD) (D8 ADVANCE, Germany) using Cu Kα.
The influence of the carbonization temperature may focus on the rearrangement of the crystal structure.