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Online since: June 2010
Authors: Akira Takeuchi, Akihisa Inoue
Subsequently, Gaskel [2] reported that a Pd-Si metallic
glass forms a network structure with edge-shared trigonal prism clusters.
We have recently reported a new MD scheme to create a noncrystalline structure based on a plastic crystal model [5].
The values of gtotal(r) at r = 1.3 nm reaches unity, indicating that a noncrystalline structure formed for the results.
The analysis with total pair-distribution function revealed that the Pd0.4Ni0.4P0.2 alloy was form in a liquid-like structure.
Gray GW: Liquid Crystals and Plastic Crystals (Ellis Horwood Series in Physical Chemistry Vols. 1 and 2, Halsted Press, New York 1974)
We have recently reported a new MD scheme to create a noncrystalline structure based on a plastic crystal model [5].
The values of gtotal(r) at r = 1.3 nm reaches unity, indicating that a noncrystalline structure formed for the results.
The analysis with total pair-distribution function revealed that the Pd0.4Ni0.4P0.2 alloy was form in a liquid-like structure.
Gray GW: Liquid Crystals and Plastic Crystals (Ellis Horwood Series in Physical Chemistry Vols. 1 and 2, Halsted Press, New York 1974)
Online since: February 2012
Authors: Xing Guo Yu, Ying Li, Guang Cheng Zhang, Long Gui Peng
Sound absorption coefficient was characterized by standing wave tube, and micro structure of composite material was analyzed by scanning electron microscope.
Resonating sound absorption structure formed by micro pore of the silicate and thin wall cavity of PMI in composite materials is beneficial to high efficiency absorption to low frequency sound.
This work prepares porous sound absorption material using PMI foam powder and silicate, and resonating sound absorption structure formed by micro pore of the silicate and thin wall cavity of PMI powder realizes high efficiency absorption to low frequency sound by resonance and friction.
Figure 7 shows PMI foam evenly distributes in silicate gel, and resonating sound absorption structure is formed by micro pore of the silicate and thin wall cavity of PMI in composite materials.
The microstructure and pore structure are important factors for sound absorption property of composite material.
Resonating sound absorption structure formed by micro pore of the silicate and thin wall cavity of PMI in composite materials is beneficial to high efficiency absorption to low frequency sound.
This work prepares porous sound absorption material using PMI foam powder and silicate, and resonating sound absorption structure formed by micro pore of the silicate and thin wall cavity of PMI powder realizes high efficiency absorption to low frequency sound by resonance and friction.
Figure 7 shows PMI foam evenly distributes in silicate gel, and resonating sound absorption structure is formed by micro pore of the silicate and thin wall cavity of PMI in composite materials.
The microstructure and pore structure are important factors for sound absorption property of composite material.
Online since: May 2014
Authors: Mun Suk Jun, Je Deok Kim
Nafion is good acid polymer having a nanopore structure, and water in the membrane is a nice base.
They can be incorporated and fixed into the nanopore of Nafion structure.
Various properties such as chemical structure, thermal and mechanical stability, crystal structure, conductivity of the pristine membranes were investigated by IR, TG-DTA, DMS (Dynamic Mechanical Spectrometer), XRD, SAXS, and impedance measurements.
The composite membranes had the crystal structure of Nafion backbone.
Nafion – bz composite membrane had a crystal structure of bz.
They can be incorporated and fixed into the nanopore of Nafion structure.
Various properties such as chemical structure, thermal and mechanical stability, crystal structure, conductivity of the pristine membranes were investigated by IR, TG-DTA, DMS (Dynamic Mechanical Spectrometer), XRD, SAXS, and impedance measurements.
The composite membranes had the crystal structure of Nafion backbone.
Nafion – bz composite membrane had a crystal structure of bz.
Online since: March 2007
Authors: Young Soo Kang, Soo Ja Shin
The Preparation and Characterization of Magnetic Material
Co Nanoparticle by Coprecipitation Route and Polyol Process
Soo Ja Shin and Young Soo Kanga
Department of Chemistry, Pukyong National University,
599-1 Daeyeon-3-dong, Nam-gu, Pusan, 608-737, Korea
a
yskang@pknu.ac.kr
Keywords: Polyol process, Magnetic material, Soft phase magnetic material
Abstract.
The size of nanoparticle was confirmed by transmission electron microscopy images and scanning electron microscopy images, according to the different methods The crystal structure of nanoparticle according to reaction condition was characterized by X-ray diffraction data.
The structure of Co nanoparticle was confirmed by X-ray powder diffraction (XRD, Philips X'pert-XPD system).
The size of nanoparticle was confirmed by transmission electron microscopy images and scanning electron microscopy images, according to the different methods The crystal structure of nanoparticle according to reaction condition was characterized by X-ray diffraction data.
The structure of Co nanoparticle was confirmed by X-ray powder diffraction (XRD, Philips X'pert-XPD system).
Online since: May 2020
Authors: A.K. Kychkin, G.G. Vinokurov, N.F. Struchkov
Research Results
Fig. 1 shows the images of the structure of the obtained coating samples.
Structure of electrometallization coatings with modifying additives: a) composition № 1; b) composition number №2; c) composition number №3.
Fig. 2 shows the distribution of Y and Nb in the structure of coatings with a complex concentrate.
The distribution of Y and Nb in the structure of coatings with additives of REM concentrate.
Shkolnikov, Determination of the porosity of gas-thermal coatings, Physics and Chemistry of Materials Processing. 5 (2010) 71-77
Structure of electrometallization coatings with modifying additives: a) composition № 1; b) composition number №2; c) composition number №3.
Fig. 2 shows the distribution of Y and Nb in the structure of coatings with a complex concentrate.
The distribution of Y and Nb in the structure of coatings with additives of REM concentrate.
Shkolnikov, Determination of the porosity of gas-thermal coatings, Physics and Chemistry of Materials Processing. 5 (2010) 71-77
Online since: December 2013
Authors: Martin Keppert, Filip Vogel, Tomáš Vavřiník, Ondřej Holčapek
Newly developed kings of concrete are newly using in transport and building structures.
The determining pore size distribution in the inner structure of high-performance concrete was measured by Thermo Pascal 140.
The size and amount of the pores in the inner structure was carried out by measuring the mercury intrusion porosimetry machine Thermo Pascal 140.
Free bounded water contained in the pores structure can affect the resulting value of mercury porosimetry and distort the final results.
Macroscopic properties, such as compressive strength, are the image of the internal structure of the material to its integral microstructure and micro composition.
The determining pore size distribution in the inner structure of high-performance concrete was measured by Thermo Pascal 140.
The size and amount of the pores in the inner structure was carried out by measuring the mercury intrusion porosimetry machine Thermo Pascal 140.
Free bounded water contained in the pores structure can affect the resulting value of mercury porosimetry and distort the final results.
Macroscopic properties, such as compressive strength, are the image of the internal structure of the material to its integral microstructure and micro composition.
Online since: June 2018
Authors: Kalpana Awasthi, Seema Awasthi, O.N. Srivastava
The transparent and crumpled structure of FLG with reduced width in the range of ~100 nm.
The peak at 1559 cm-1 is due to C=C bond present in the ring structure.
(b) SWCNTs buckybook like structure.
Photobiology A: Chemistry 329 (2016)175-181
Basiuk (Eds.), Chemistry of Carbon Nanotubes, American Scientific Publisher, USA, 2008,pp. 1-26
The peak at 1559 cm-1 is due to C=C bond present in the ring structure.
(b) SWCNTs buckybook like structure.
Photobiology A: Chemistry 329 (2016)175-181
Basiuk (Eds.), Chemistry of Carbon Nanotubes, American Scientific Publisher, USA, 2008,pp. 1-26
Online since: August 2008
Authors: Pichet Limsuwan, Wandee Onreabroy, Kittisakchai Naemchanthara, S. Meejoo
Limsuwan1,d
1
Department of Physics, Faculty of Science, King Mongkut's University of Technology Thonburi,
Bangkok 10140, Thailand.
2
Department of Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.
The effects of heat treatment on the structure of chicken egg shell were carefully studied by Rietveld refinement method.
Calcium carbonate has two main crystal structures, calcite and aragonite.
The chicken egg shell, one of calcium carbonate, is a complex and highly structured calcite bioceramic.
Summary The chicken egg shells consist mainly of CaCO3 with calcite structure and water molecules in the lattice.
The effects of heat treatment on the structure of chicken egg shell were carefully studied by Rietveld refinement method.
Calcium carbonate has two main crystal structures, calcite and aragonite.
The chicken egg shell, one of calcium carbonate, is a complex and highly structured calcite bioceramic.
Summary The chicken egg shells consist mainly of CaCO3 with calcite structure and water molecules in the lattice.
Online since: July 2012
Authors: Xiao Hong Yuan, Qiang Sun, Xian Jun Hou, Shu Chen, Zhi En Liu, Ya Dong Deng
Figure 2 shows the layout mode and the topological structure of TEG thermoelectric module.
Increase temperature drop usually need a hot end box with certain internal heat conduction structure, figure 3 is showing the internal structure of hot end box and figure 3b is a kind of internal structure to exchange the heat.
(3)The heat conducting structure inside the hot end box can improve the heat transfer between waste gas and box.
Research on a Novel Thermoelectric Generator Structure for Vehicle Exhaust Gas Energy Recovery.
Beijing:Chemistry Industry Press,2009.
Increase temperature drop usually need a hot end box with certain internal heat conduction structure, figure 3 is showing the internal structure of hot end box and figure 3b is a kind of internal structure to exchange the heat.
(3)The heat conducting structure inside the hot end box can improve the heat transfer between waste gas and box.
Research on a Novel Thermoelectric Generator Structure for Vehicle Exhaust Gas Energy Recovery.
Beijing:Chemistry Industry Press,2009.
Online since: June 2014
Authors: Hendrik O. Lintang, Mohd Hayrie Mohd Hatta, Nor Aziah Buang, Leny Yuliati
Lintang2,b,
Nor Aziah Buang1,c and Leny Yuliati2,d*
1Department of Chemistry, Faculty of Science,
Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia
2Ibnu Sina Institute for Fundamental Science Studies,
Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia
ashhayrie2@live.com.my, bhendrik@ibnusina.utm.my,
cnoraziah@kimia.fs.utm.my, dleny@ibnusina.utm.my
Keywords: titanium dioxide, carbon-coated titanium dioxide, hydrothermal method, dichloromethane
Abstract.
On the other hand, the formation of carbon can be suggested from DR UV-visible spectrum and SEM image, which showed the additional of absorption band in the visible region and the successful formation of carbon that grew both on the surface with a unique noodle-like structure and surroundings of the TiO2 with non-uniform bulk structure, respectively.
It is interesting to point out here that the TiO2 has been coated with carbon that has a unique noodle-like structure.
On the other hand, this study revealed the possibility to use dichloromethane as the carbon precursor to produce C-TiO2 with unique structure, which to the best of our knowledge, has never been reported before.
The SEM images showed the formation of carbon on both surface with a unique noodle-like structure and surrounding of TiO2 with no uniform bulk structure.
On the other hand, the formation of carbon can be suggested from DR UV-visible spectrum and SEM image, which showed the additional of absorption band in the visible region and the successful formation of carbon that grew both on the surface with a unique noodle-like structure and surroundings of the TiO2 with non-uniform bulk structure, respectively.
It is interesting to point out here that the TiO2 has been coated with carbon that has a unique noodle-like structure.
On the other hand, this study revealed the possibility to use dichloromethane as the carbon precursor to produce C-TiO2 with unique structure, which to the best of our knowledge, has never been reported before.
The SEM images showed the formation of carbon on both surface with a unique noodle-like structure and surrounding of TiO2 with no uniform bulk structure.