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Online since: June 2016
Authors: Sterian Danaila, Constantin Leventiu, Florian Vladulescu, Dragos Isvoranu
The chemistry turbulence interaction is described in terms of finite rate eddy dissipation concept (FREDC).
As a first step in the numerical simulation of the in situ reheat, a simple chemistry mechanism has been considered.
Turbulence and the dynamics of coherent structures, parts I–III.
As a first step in the numerical simulation of the in situ reheat, a simple chemistry mechanism has been considered.
Turbulence and the dynamics of coherent structures, parts I–III.
Online since: September 2016
Authors: Eugénie Martinez, Pascal Besson, Marie Christine Roure, Mickaël Rebaud, Virginie Enyedi, Lukasz Borowik, Laura Toselli
An alternative to mixed chemistries is to separate the cleaning process in multiple steps.
Oxide dissolving chemistries with specific properties (pH control, complexing effect) can subsequently be used on this oxide layer.
In early stages, island shaped structures are observed which are followed by deep etched areas when passivation is reached (Fig. 4).
Oxide dissolving chemistries with specific properties (pH control, complexing effect) can subsequently be used on this oxide layer.
In early stages, island shaped structures are observed which are followed by deep etched areas when passivation is reached (Fig. 4).
Online since: February 2012
Authors: Yin Xia Chang, Si Xiang Zhang, Jian Yi Li
However, when the application procedures become complex, the inadequacies such as too many moving control structures, dead volume, not to re-configure and difficult to parallel control are exposed.
Digital microfluidic chip applications At the present time, applications are found in the domains of biology and biotechnology, chemistry, medical, and optics, as shown in Fig.2.
The mainly applications in chemistry is chemical synthesis.
Digital microfluidic chip applications At the present time, applications are found in the domains of biology and biotechnology, chemistry, medical, and optics, as shown in Fig.2.
The mainly applications in chemistry is chemical synthesis.
Online since: September 2013
Authors: Jian Zhang, Yue Jun Zhu, Bo Jing, Ye Bang Tan
Ageing Effect on Steady Rheological Behavior in Oilfield Water of Water-Soluble, Hydrophobically Associating Polymer
Yuejun Zhu1, 2, a, Jian Zhang1, 2, b, Bo Jing1, 2, c, Yebang Tan3, 4, d
1 State Key Laboratory of Offshore Oil Exploitation, Beijing China, 100027
2 CNOOC Research Institute, Beijing China, 100027
3 School of Chemistry and Chemical Engineering, Shandong University, Jinan China, 250100
4 Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Jinan China, 250100
azhuyj3@cnooc.com.cn, bzhangjian@cnooc.com.cn, cjingbo@cnooc.com.cn, dybtan@sdu.edu.cn
Keywords: water-soluble, hydrophobically associating polymer; rheological behavior; shear thickening; ageing effect
Abstract.
The polymer chains may form bridges among each other, which results in the formation of a net-like structure, accounting for a slight decrease of G’ and G” when the ageing time is shorter than 500 hours.
Ouyang: Chemistry and Technology of Fuels and Oils, Vol. 48 (2012), p.112
The polymer chains may form bridges among each other, which results in the formation of a net-like structure, accounting for a slight decrease of G’ and G” when the ageing time is shorter than 500 hours.
Ouyang: Chemistry and Technology of Fuels and Oils, Vol. 48 (2012), p.112
Online since: June 2014
Authors: Dan Yong Wang, Jun Cong Liu, Yi Wei Chen, Shu Hu Li, Hua Zhen Wei
Key words: Microcapsules; Manufacturing; Healing agents; Core Materials; Shell Materials
Microcapsules are widely used in key important parts of some key equipments in recovering microcracks under the situation that the structures are deeply destroyed when attacked by the coming objects.
They are used in dual capsule epoxy-amine healing chemistry to produce thermally stable self-healing epoxy polymers by Henghua Jin and his co-workers[15].
C500 Final Report, Blppmington, Department of Chemistry Indiana University, 2006
They are used in dual capsule epoxy-amine healing chemistry to produce thermally stable self-healing epoxy polymers by Henghua Jin and his co-workers[15].
C500 Final Report, Blppmington, Department of Chemistry Indiana University, 2006
Online since: October 2014
Authors: Xiao Ying Yin, Xu Li, Qing Shan Liu, Shu Juan Zhuang, Wei Wei Zhang, Ping Geng
In analytical chemistry, selectivity means a method that is suitable to determine the concentration of a particular analyte from the composition of the sample matrix [4].
Now SPE has been frequently used for some main fields including environmental governance, biological engineering and food chemistry.
However, many studies find that TCM active ingredients are hard to separate because of low content, complicated structure and various types.
Now SPE has been frequently used for some main fields including environmental governance, biological engineering and food chemistry.
However, many studies find that TCM active ingredients are hard to separate because of low content, complicated structure and various types.
Online since: August 2014
Authors: Zhao Deng, Ying Dai, Meng Jun Zhou, Hua Xiao
Introduction
Barium titanate (BaTiO3), with a perovskite type crystal structure, is one of the most well-known ferroelectrics.
The conventional synthesis of BaTiO3 nanoparticals involves solid-state calcinations of a BaCO3 and TiO2 powder mixture [3], oxalate coprecipitation route [4], wet-chemistry synthesis techniques, including decomposition of bimetallic alkoxide precursors [5], sol-gel processing [6], hydrothermal synthesis [7], sol–gel-hydrothermal [8], microemulsion method [9], and microwave assisted rout [10] et al.
Pileni, Journal of Physical Chemistry, Vol. 97, 27, (1993), p. 6961
The conventional synthesis of BaTiO3 nanoparticals involves solid-state calcinations of a BaCO3 and TiO2 powder mixture [3], oxalate coprecipitation route [4], wet-chemistry synthesis techniques, including decomposition of bimetallic alkoxide precursors [5], sol-gel processing [6], hydrothermal synthesis [7], sol–gel-hydrothermal [8], microemulsion method [9], and microwave assisted rout [10] et al.
Pileni, Journal of Physical Chemistry, Vol. 97, 27, (1993), p. 6961
Online since: July 2014
Authors: Ke Gai, Dong Ping Ma, Hui Li Qi, Yu Quan Zhang
Liquid phase Rhodamine Boxidation induced by plasma with glow discharge electrolysis
Ke Gaia, Huili Qib, Dongping Mac, Yuquan Zhangd
College of Chemistry and Chemical Engineering, Longdong University, Qingyang, 745000,China
aemail:gaike310@sohu.com, bemail:qhl725@sohu.com, cemail:mdp_725@163.com, demail:357767938@qq.com
Keywords: Rhodamine B; plasma; glow discharge; degradation; hydroxyl radicals
Abstract.
It has the xanthene structures and often as cationic molecular model of refractory organic pollution.
Acknowledgement In this paper, the research was sponsored by the School of GANSU Province Graduate Student Teacher Research Item Project Stake (Project No. 121003), the Applied Chemistry Key Subject of Gansu Pronvince (Project No.
It has the xanthene structures and often as cationic molecular model of refractory organic pollution.
Acknowledgement In this paper, the research was sponsored by the School of GANSU Province Graduate Student Teacher Research Item Project Stake (Project No. 121003), the Applied Chemistry Key Subject of Gansu Pronvince (Project No.
Online since: April 2021
Authors: Oleg A. Dizer, Stanislav S. Naboichenko, Denis A. Rogozhnikov
All the thermodynamic calculations were performed using HSC Chemistry software.
Tennantite and pyrite are low-solubility minerals; they dissolve completely at 2 kmol of HNO3, tennantite - due to its complex structure, and pyrite - due to its high concentration in the considered concentrate.
Hope, Electrochemical and surface analytical studies of tennantite in acid solution, Journal of Electroanalytical Chemistry, 570 (2004) 145-152
Tennantite and pyrite are low-solubility minerals; they dissolve completely at 2 kmol of HNO3, tennantite - due to its complex structure, and pyrite - due to its high concentration in the considered concentrate.
Hope, Electrochemical and surface analytical studies of tennantite in acid solution, Journal of Electroanalytical Chemistry, 570 (2004) 145-152
Online since: November 2015
Authors: Antonio Ballester, J.A. Muñoz, M. Luisa Blázquez, F. González, Ernesto González
Stookey: Analytical Chemistry Vol. 42 (1970), p. 779-781
Schröder: Physical Chemistry Chemical Physics Vol. 9 (2007), p. 2619-2629
Structure, Properties, Reactions, Occurences and Uses, edited by R.M.
Schröder: Physical Chemistry Chemical Physics Vol. 9 (2007), p. 2619-2629
Structure, Properties, Reactions, Occurences and Uses, edited by R.M.