Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: August 2008
Authors: Pitak Laoratanakul, A. Rujiwatra, N. Thammajak, Y. Chimupala
Laoratanakul
3,d
1
Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200
Thailand.
2
National Synchrotron Research Center, PO Box 93, Nakhon Ratchasima 30000 Thailand.
3
National Metal and Materials Technology Center, Pathumthani 12120 Thailand.
Every diffraction peak present in the XRD pattern of the as-prepared single phase LN powder (Fig. 3(d)), could be indexed based on a hexagonal structure in rhombohedral R3c, with refined cell parameters a = 5.14829(2) Å and c = 13.8631(4) Å.
Every diffraction peak present in the XRD pattern of the as-prepared single phase LN powder (Fig. 3(d)), could be indexed based on a hexagonal structure in rhombohedral R3c, with refined cell parameters a = 5.14829(2) Å and c = 13.8631(4) Å.
Online since: June 2008
Authors: Mário G.S. Ferreira, Mikhail L. Zheludkevich, K.A. Yasakau
However, measured VP has a contribution not only from work function of pure
metals but from different factors like: surface oxide films or layers of the corrosion products and
sample preparation conditions [4,9], adsorption, charge accumulation, changes in oxide structure
and composition, surface roughness, contamination over the tip surface [8].
Dean, Lange's Handbook of Chemistry 15 th ed., McGraw-Hill Book company, (1999) [4] P.
Dean, Lange's Handbook of Chemistry 15 th ed., McGraw-Hill Book company, (1999) [4] P.
Online since: May 2004
Authors: P. Zannini
Zannini
University of Modena and Reggio Emilia - Chemistry Department
Via G.
Summarising their most important features, they have: - water solubility - high wetting power - very good time stability - chemical inertia - low toxicity - fast thermal decomposition On the contrary, the limits of inks based on Glycols + Water mix. are: - narrow range of rheological behaviour - sedimentation at low viscosity and density - problems on very fast firing cycles, due to the intrinsic high load of organic substances; low strength of inks in overlapped decorations, so necessity of fixing agents application between the decorations 2) RESINS the application of organic polymers able to reticulate, i.e. to create a tridimensional structure (film), that can regulate liquids penetration and bind solid particles of the ink, has been a big revolution for silk screening vehicles. moreover, the very big variety of resins has permitted an enormous improvement to the possibility of changing the rheological features of inks.
Summarising their most important features, they have: - water solubility - high wetting power - very good time stability - chemical inertia - low toxicity - fast thermal decomposition On the contrary, the limits of inks based on Glycols + Water mix. are: - narrow range of rheological behaviour - sedimentation at low viscosity and density - problems on very fast firing cycles, due to the intrinsic high load of organic substances; low strength of inks in overlapped decorations, so necessity of fixing agents application between the decorations 2) RESINS the application of organic polymers able to reticulate, i.e. to create a tridimensional structure (film), that can regulate liquids penetration and bind solid particles of the ink, has been a big revolution for silk screening vehicles. moreover, the very big variety of resins has permitted an enormous improvement to the possibility of changing the rheological features of inks.
Online since: January 2005
Authors: Jin Young Yoon, Mi Geum Kim, So Yeop Han
Journal Citation (to be inserted by the publisher)
Copyright by Trans Tech Publications
Synthesis of Caprolactam-Attached Monoacetyldiglyceride
Jin-Young Yoon, Mi-Geum Kim and So-Yeop Han*
Department of Chemistry and Division of Molecular Life Sciences,
Ewha Woman's University, Seoul, 120-750, Korea
*Corresponding author : syhan@ewha.ac.kr
Keywords: MADG, glycerol, fatty acid, caprolactam, drug delivery system.
Since MADGs are already known to exist in Celastracae seed oil and bovine milk fat, the structures of natural MADG isolated from bovine udder were also fully investigated using spectroscopic methods, such as GC, fast atom bombardment (FAB), tandem mass (MS/MS), NMR, and IR spectroscopy.
Since MADGs are already known to exist in Celastracae seed oil and bovine milk fat, the structures of natural MADG isolated from bovine udder were also fully investigated using spectroscopic methods, such as GC, fast atom bombardment (FAB), tandem mass (MS/MS), NMR, and IR spectroscopy.
Online since: July 2007
Authors: A. Szubert, Irena Helena Maliszewska, Ewa Jazdzyk, Zygmunt Sadowski
., Maliszewska I.2c
, Jazdzyk E.
1d
1
Department of Chemical Engineering, Wroclaw University of Technology, Poland
2
Department of Medical Chemistry and Microbiology, Wroclaw University of Technology, Poland
Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, POLAND
a
Zygmunt.Sadowski@pwr.wroc.pl, b Agnieszka.Uryga@pwr.wroc.pl, c IrenaHelena.Maliszewska@pwr.wroc.pl,
d Ewa.Jazdzyk@pwr.wroc.pl
Keywords: organic matter, metalloporphyrins, black shale, biodegradation, biodestruction.
The experimental data on geoporphyrins biodegradation indicated for little changes in vanadyl porphyrins structures [5,8].
The experimental data on geoporphyrins biodegradation indicated for little changes in vanadyl porphyrins structures [5,8].
Online since: June 2010
Authors: Mitsuo Niinomi, Masato Ueda, R. Matsunaga, Masahiko Ikeda
Niinomi3,c
1
Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita,
Osaka 564-8680, Japan
2
Graduate School, Kansai University, Suita, Osaka 564-8680, Japan
3
Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
a hikoik@kansai-u.ac.jp,
b
m-ueda@kansai-u.ac.jp,
c niinomi@imr.tohoku.ac.jp
Keywords: Ti-Mn system alloy, ubiquitous metallic element, isothermal omega phase, alpha phase,
heat treatment
Abstract.
Acicular structure originated from martensite was partially observed in 3.0Al and 4.5Al alloys. 30 40 50 60 70 80 90 0Al ▼:' ●: ● ● ● ● ● ● ● ● ● ● 0Al 1.5Al 3.0Al 4.5Al Intensity(arbitrary unit) 2(Cu-K ゜ ゜ ゜ ゜ ゜ ゜ ● ● 200 211 ● 110 STQ(1173K-3.6ks→W.Q.) 110 3.0Al 1.5Al STQ(1173K-3.6ks→W.Q.) ゜ 1010--1011 10121120 Fig.1 XRD profiles of 0Al to 4.5Al in the solution-treated and quenched state.
Acicular structure originated from martensite was partially observed in 3.0Al and 4.5Al alloys. 30 40 50 60 70 80 90 0Al ▼:' ●: ● ● ● ● ● ● ● ● ● ● 0Al 1.5Al 3.0Al 4.5Al Intensity(arbitrary unit) 2(Cu-K ゜ ゜ ゜ ゜ ゜ ゜ ● ● 200 211 ● 110 STQ(1173K-3.6ks→W.Q.) 110 3.0Al 1.5Al STQ(1173K-3.6ks→W.Q.) ゜ 1010--1011 10121120 Fig.1 XRD profiles of 0Al to 4.5Al in the solution-treated and quenched state.
Online since: October 2010
Authors: Bin Tong, Zheng Guo, Zheng Li, Jin Liu
When the blank soil samples are solidified either by CaO solely or WSP
and CaO composite, CaO will modify the structure of the double electric layer on the surface of
mineral clay particles, thin the binding water film, so that the original characteristic of hydrophilicity
of the loose soil is changed into hydrophobicity.
Basis of polymer chemistry (Chemical Industy Publications, Beijin 1998) 94.
Basis of polymer chemistry (Chemical Industy Publications, Beijin 1998) 94.
Online since: May 2010
Authors: Qiang Liu, Bing Jian Zhang
A New Method on Laboratory Evaluation of the Effectiveness of
Consolidant Treatments for the Conservation of Historic Stone Buildings
and Sculptures
Qiang Liu1, a
and Bingjian Zhang
2, b
1
Yunnan Key laboratory of nanomaterials & nanotechnology, Department of materials science and
technology, Yunnan University, Kunming 650091, China
2
Department of Chemistry, Zhejiang University, Hangzhou 310027, China
a
yusosliu@yahoo.com.cn, bzbj@mail.hz.zj.cn
Key words: Characterization methods; weathering; stones Conservation; Consolidant; Efficacy of
protective treatments
Abstract.
The shape, size, structure and growing orientation of inorganic crystal are consequently under the guidance [14].
The shape, size, structure and growing orientation of inorganic crystal are consequently under the guidance [14].
Online since: July 2011
Authors: Hui Chen, Jing Wen Tian, Feng Jun Wu, Jing Di Ren
For BP neural network as the individual in each generation, parameters settings are as follows: Network training accuracy 0.005, initial learning speed 0.6, momentum factor 0.3, training times for 2000 times; network structure: an input layer, a hidden layer and an output layer, in which there are two input layer neurons (the initial concentration of 1-Octanesulfonic acid sodium salt monohydrate, linear gradient slope), two hidden layer neurons, one output layer neuron (HCRF value).
References [1] CHEN Chang-yun and LI Xiao-hua: Application of Simulated Annealing Neural Network to the Optimization Of HPLC Gradient Separation Of Drugs, PTCA vol.41(2005) [2] YAN Li-bo XUE Ping: Application of Genetic Neural Networks in the Separation Optimization of HPLC for Drugs, Computers and Applied Chemistry Vol.19 (2002) [3] CHEN Xue-guo, NI Jian-yi: Application of Genetic Algorithm In Optimization of Mobile Phase Composition In High Performance Liquid Chromatography, Chinese Journal of Chroma Tography Vol.20(2002) [4] CHEN Chang-yun, MA Mei-hua: Application of Genetic Algorithm And Annealing Neural Network to Optimize Separation Conditions for Eight Kinds of Water-soluble Vitamins by HPLC, Food Science Vol.29(2008), p318 [5] LI Xin-pu: Application of High Performance Liquid Chromatography Technique in Study of Chinese Herbal Preparations, Doctoral Dissertation of Lanzhou University (2006) [6] FENG Xue-song: Optimization of HPLC Gradient Separation of Mixed Antibacterial
References [1] CHEN Chang-yun and LI Xiao-hua: Application of Simulated Annealing Neural Network to the Optimization Of HPLC Gradient Separation Of Drugs, PTCA vol.41(2005) [2] YAN Li-bo XUE Ping: Application of Genetic Neural Networks in the Separation Optimization of HPLC for Drugs, Computers and Applied Chemistry Vol.19 (2002) [3] CHEN Xue-guo, NI Jian-yi: Application of Genetic Algorithm In Optimization of Mobile Phase Composition In High Performance Liquid Chromatography, Chinese Journal of Chroma Tography Vol.20(2002) [4] CHEN Chang-yun, MA Mei-hua: Application of Genetic Algorithm And Annealing Neural Network to Optimize Separation Conditions for Eight Kinds of Water-soluble Vitamins by HPLC, Food Science Vol.29(2008), p318 [5] LI Xin-pu: Application of High Performance Liquid Chromatography Technique in Study of Chinese Herbal Preparations, Doctoral Dissertation of Lanzhou University (2006) [6] FENG Xue-song: Optimization of HPLC Gradient Separation of Mixed Antibacterial