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Online since: December 2012
Authors: Bin Bin Zhao, Hong Ping Zhang, Xue Gang Luo, Xiao Yan Lin
A lot of plastic film in the soil forming barrier that serious damage to the granular physical structure of the soil, effect the seepage and conduction, inhibit the growth rate of the crop root and microbial activity and ultimately lead to yield reduction [3-5].
Chemistry and bioengineering 2006, 6(23):1-6 [8] Mo ZS, Zhang HF.
Chinese journal of applied chemistry (in Chinese).
Chemistry and bioengineering 2006, 6(23):1-6 [8] Mo ZS, Zhang HF.
Chinese journal of applied chemistry (in Chinese).
Online since: November 2013
Authors: Qi Sun, Jian Sun, Shan Shan Gong
A novel synthesis of 3-bromo-1,2-propanediol from 3-oxetanol
Jian Suna, Shanshan Gongb, Qi Sunc,*
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University 605 Fenglin Avenue, Nanchang, Jiangxi 330013, PR China
aemail:sunjian_jxstnu@163.com, bemail: gongshanshan33@gmail.com,
cemail: sunqi96@tsinghua.org.cn
Keywords: ring-opening reaction; 3-oxetanol; 3-bromo-1,2-propanediol; triphenylphosphine; carbon tetrabromide
Abstract.
Analysis of the structure of intermediate 4b showed that the steric hindrance played a key role on the selective attack of bromide ion at C-2 position (Scheme 3).
Lee, Chemistry and Industry, Vol. 22 (1984), p. 900 [8] H.
Analysis of the structure of intermediate 4b showed that the steric hindrance played a key role on the selective attack of bromide ion at C-2 position (Scheme 3).
Lee, Chemistry and Industry, Vol. 22 (1984), p. 900 [8] H.
Online since: January 2013
Authors: Jian Cai Leng, Hong Ma, Yong Ma
The geometry optimization and the electronic structure calculation are performed at the hybrid density-functional theory (DFT) B3LYP level with the Lanl2DZ basis set in the GAUSSIAN 03 package [17], where the effective core potential (ECP) is used for the gold atoms.
Wang, The Journal of Physical Chemistry.
Luo, Quantum Chemistry for Molecular Electronics (Sweden: Royal Institute of Technology) QCME-V1.1. (2006).
Wang, The Journal of Physical Chemistry.
Luo, Quantum Chemistry for Molecular Electronics (Sweden: Royal Institute of Technology) QCME-V1.1. (2006).
Online since: September 2014
Authors: Nikita V. Martyushev, Aleksander S. Ivashutenko, Igor G. Vidayev
The main feature of the designed technology is the reduced sintering temperature (200 °C) and the acquired fine-grained structure of the products.
This powder was obtained at the Siberian Chemical Combine by the technique of high-frequency plasma chemistry from the solutions of zirconium, aluminum, and yttrium nitrate compounds [6].
The results of the experiments on compaction and sintering as well as on structure examination are given in Table 3 and in Fig. 3-5.
According to the results in Table 3, the technology of magnetic pulse compaction definitely affects the final properties and structure of the ceramics.
Secondly, it allows obtaining the fine-grained structure.
This powder was obtained at the Siberian Chemical Combine by the technique of high-frequency plasma chemistry from the solutions of zirconium, aluminum, and yttrium nitrate compounds [6].
The results of the experiments on compaction and sintering as well as on structure examination are given in Table 3 and in Fig. 3-5.
According to the results in Table 3, the technology of magnetic pulse compaction definitely affects the final properties and structure of the ceramics.
Secondly, it allows obtaining the fine-grained structure.
Online since: April 2011
Authors: Jian Lin Xu, Shu Hua Yang, Li Hui Zhang, Zhao Kang, Qiang Guo
The results show that nano-antimony powder can be prepared by electrochemical method, and the antimony powder possesses the crystal structure with orthorhombic hexahedron.
In order to improve resource utilization, researches should increase investment in science and technology, vigorously develop further processing antimony products with strong market competitiveness, well outlook, high technology, high added value and gradually occupy the market, form a batch of new materials and industrial structure and expand its related applications, and ultimately change our antimony products with the extensive primary structure, and change resources advantage to the industrial advantages, and achieve steady and rapid economic development [1].
Conclusion Nano-antimony powder can be prepared by electrochemical method, and the antimony powder possesses the crystal structure with orthorhombic hexahedron.
Cheetham: The Chemistry of Nanomaterials (Wiley–VCH Verlag GmbH & Co.
[8] Yu E, Yuan Yongming, Hu Changwe: Physical Chemistry(People's Publishing House of Sichuan℃, China 1998).
In order to improve resource utilization, researches should increase investment in science and technology, vigorously develop further processing antimony products with strong market competitiveness, well outlook, high technology, high added value and gradually occupy the market, form a batch of new materials and industrial structure and expand its related applications, and ultimately change our antimony products with the extensive primary structure, and change resources advantage to the industrial advantages, and achieve steady and rapid economic development [1].
Conclusion Nano-antimony powder can be prepared by electrochemical method, and the antimony powder possesses the crystal structure with orthorhombic hexahedron.
Cheetham: The Chemistry of Nanomaterials (Wiley–VCH Verlag GmbH & Co.
[8] Yu E, Yuan Yongming, Hu Changwe: Physical Chemistry(People's Publishing House of Sichuan℃, China 1998).
Online since: October 2014
Authors: Mohd Nazree B. Derman, Irwana Nainggolan, Tulus Ikhsan, Devi Shantini Chandrasakaran
The structure characterization of the chitosan was studied using Fourier Transform Infrared Spectroscopy (FTIR).
Thus, interaction of chloroform form additional charge carrier within the structure [4].
Physics and Chemistry of the Earth (2013), in press [3] S.
Journal of Electroanalytical Chemistry, Vol 605 (2007), p. 53–60
Richmond: Molecular Structure of the Chloroform-Water and Dichloromethane-Water Interfaces.
Thus, interaction of chloroform form additional charge carrier within the structure [4].
Physics and Chemistry of the Earth (2013), in press [3] S.
Journal of Electroanalytical Chemistry, Vol 605 (2007), p. 53–60
Richmond: Molecular Structure of the Chloroform-Water and Dichloromethane-Water Interfaces.
Online since: December 2011
Authors: Lee Luong, Amer Yousef, Jonas Addai Mensah, Abdullatif Lacina Diaby
A typical example of the fouling and ageing phenomenon was displayed in Nelson’s 1934 proposed model, where the initial deposition involved a gel which metamorphosed into a coke like hard structure over time [32,33].
Müller-Steinhagen, Fouling of heat exchanger surfaces, Chemistry and Industry, 6 (1995) 171-175
Wiehe, The chemistry of petroleum fouling, in Refinery Processing, AIChE, New York, 2001, pp. 204-210
Part II: Throughput loss considerations, Industrial & Engineering Chemistry Research, 44 (2005) 8046-8056
Part III: Multiperiod cleaning under uncertainty with financial risk management, Industrial & Engineering Chemistry Research, 44 (2005) 8136-8146
Müller-Steinhagen, Fouling of heat exchanger surfaces, Chemistry and Industry, 6 (1995) 171-175
Wiehe, The chemistry of petroleum fouling, in Refinery Processing, AIChE, New York, 2001, pp. 204-210
Part II: Throughput loss considerations, Industrial & Engineering Chemistry Research, 44 (2005) 8046-8056
Part III: Multiperiod cleaning under uncertainty with financial risk management, Industrial & Engineering Chemistry Research, 44 (2005) 8136-8146
Online since: July 2023
Authors: Maria Ulfa, Addy Rachmat, Desnelli Desnelli, Muhammad Said, Poedji Loekitowati Hariani
Introduction
One of the principles of green chemistry is to minimize the biomass waste released into nature and convert it into valuable materials.
This confirms the presence of a neatly arranged layered structure with an interlayer distance of 3.642 d (FWHM = 0.04) and a peak intensity of 688.32.
This depicts that the conjugated structure of graphene has been significantly restored in the resulting RGO.
Nwoko, Green synthesis of reduced graphene oxide using orange extract for Ni2+ removal, Algerian Journal of Materials Chemistry. 4 (2021) 15─ 25
Jung, Facile and Safe Graphene Preparation on Solution Based Platform, Journal of Industrial and Engineering Chemistry. 1678 (2013) 5
This confirms the presence of a neatly arranged layered structure with an interlayer distance of 3.642 d (FWHM = 0.04) and a peak intensity of 688.32.
This depicts that the conjugated structure of graphene has been significantly restored in the resulting RGO.
Nwoko, Green synthesis of reduced graphene oxide using orange extract for Ni2+ removal, Algerian Journal of Materials Chemistry. 4 (2021) 15─ 25
Jung, Facile and Safe Graphene Preparation on Solution Based Platform, Journal of Industrial and Engineering Chemistry. 1678 (2013) 5
Online since: August 2013
Authors: Kensuke Nishioka, Takatoshi Yasui
By the simple 2-step wet etching, the micro/nano composite structure was formed.
By constructing the micro/nano composite structure on silicon surface, the structure provides a composite interface between the water droplet, micro/nano structure and the air pockets or bubbles trapped in the valleys of the structure [9].
Adamson, Physical Chemistry of Surfaces, 6th ed., Wiley, New York, 1982
Cornu, Fabrication of silicon pyramid/nanowire binary structure with superhydrophobicity, Appl.
Yang, Reflectivity of porous-pyramids structured silicon surface, Appl.
By constructing the micro/nano composite structure on silicon surface, the structure provides a composite interface between the water droplet, micro/nano structure and the air pockets or bubbles trapped in the valleys of the structure [9].
Adamson, Physical Chemistry of Surfaces, 6th ed., Wiley, New York, 1982
Cornu, Fabrication of silicon pyramid/nanowire binary structure with superhydrophobicity, Appl.
Yang, Reflectivity of porous-pyramids structured silicon surface, Appl.