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Online since: September 2013
Authors: He Jiang
A compact structure is formed by asphalt wrapping aggregate to make recycled mixture high strength.
Chemistry reaction is that water wet aggregate, making ionization reaction and forming a polar adsorption surface, thereby increasing the interaction between emulsified asphalt and aggregate.
Structure and strength formation process of the recycled mixture has changed after adding cement.
This structure can ensure that the recycled mixture has certain strength and prevent the recycled mixture from deformation because of softing at high temperature.
A compact structure is formed by asphalt wrapping aggregate to make recycled mixture high strength.
Chemistry reaction is that water wet aggregate, making ionization reaction and forming a polar adsorption surface, thereby increasing the interaction between emulsified asphalt and aggregate.
Structure and strength formation process of the recycled mixture has changed after adding cement.
This structure can ensure that the recycled mixture has certain strength and prevent the recycled mixture from deformation because of softing at high temperature.
A compact structure is formed by asphalt wrapping aggregate to make recycled mixture high strength.
Online since: February 2013
Authors: Xiao Hua Cao, Dong Yan Wang, Hai Hua Hu
Low temperature plasma technology based on gas discharge is a kind of new waste gas treatment technology combination of physics and chemistry, which not only for particulate matter (PM) has good purification effect, and oxides of nitrogen (NOx), hydrocarbon (HC), carbon monoxide (CO) and other harmful substances to realize synchronous purification.
The electrode and gap structure can be a plane or coaxial cylindrical style.
In the commonly used DBD reactor structure, column is the most conducive to industrialization application structure.
The electric field intensity is uniform in the air gap, which matches the cylindrical structure.
The downward trend is relatively flat, which shows that electric field intensity usually less inhibited by dielectric thickness in the column reactor structure.
The electrode and gap structure can be a plane or coaxial cylindrical style.
In the commonly used DBD reactor structure, column is the most conducive to industrialization application structure.
The electric field intensity is uniform in the air gap, which matches the cylindrical structure.
The downward trend is relatively flat, which shows that electric field intensity usually less inhibited by dielectric thickness in the column reactor structure.
Online since: September 2014
Authors: Benjamin Valdez, Alexey Pestryakov, Vitalii Petranovskii, Larysa Burtseva, Rainier Romero
Simulated packing serves often as structure model of a material.
Small spheres may fill the empty space between large spheres and thus make the structure denser.
Bimodal structures have higher density than monosized ones.
It is known from the crystal chemistry that such packings are subjected to the Goldschmidt’s and Pauling’s rules [13].
This structure corresponds to a sphere packing at its rigidity-percolation threshold.
Small spheres may fill the empty space between large spheres and thus make the structure denser.
Bimodal structures have higher density than monosized ones.
It is known from the crystal chemistry that such packings are subjected to the Goldschmidt’s and Pauling’s rules [13].
This structure corresponds to a sphere packing at its rigidity-percolation threshold.
Online since: May 2013
Authors: Feng Lin He, Mao Xiang Jing, Xiao Xiao Meng, Xiang Qian Shen
These nanocomposites have a nanoporous structure with high specific surface area and their pore sizes, pore structures, surface morphologies are largely affected by the dispersed nano metal species.
It can be seen that all the catalysts have a porous structure and their pore sizes are largely affected by the transition metal species.
For Co/Ce-K-O, the surface exhibits numerous porous honeycomb structures (Fig. 2a), and the Cu/Ce-K-O nanocomposite is characterized with the porous network structure (Fig. 2c).
As for Ni/Ce-K-O (Fig. 2b), the particles are agglomerated and the porous structure is not obvious.
Handbook of chemistry and physics, 75th Edition.
It can be seen that all the catalysts have a porous structure and their pore sizes are largely affected by the transition metal species.
For Co/Ce-K-O, the surface exhibits numerous porous honeycomb structures (Fig. 2a), and the Cu/Ce-K-O nanocomposite is characterized with the porous network structure (Fig. 2c).
As for Ni/Ce-K-O (Fig. 2b), the particles are agglomerated and the porous structure is not obvious.
Handbook of chemistry and physics, 75th Edition.
Online since: June 2015
Authors: Chin Wei Lai, Sharifah Bee Abd Hamid, Wei Wen Liu, F.W. Low, S.W. Chong
Today, research on graphene and other two-dimensional sp2-hybridized carbon nanomaterials has tremendously impacted the areas of modern chemistry, physics, and materials science and engineering.
Graphene has shown great promise in various applications due to its unique structure and properties.
Meanwhile, the XRD was used to determine the molecular structure of graphite and GO.
Graphene has shown great promise in various applications due to its unique structure and properties.
Meanwhile, the XRD was used to determine the molecular structure of graphite and GO.
Online since: December 2006
Authors: Wing Yiu Yeung, Richard Wuhrer, Darren Attard
Structural Refinement in High Temperature Annealing of Magnetron
Sputtered Titanium Vanadium Nitride Coatings
Wing Yiu Yeung1,a
Richard Wuhrer2,b and Darren Attard
3,c
1
Department of Chemistry, Materials and Forensic Sciences, 2Microstructural Analysis Unit,
University of Technology, Sydney, P.O.
A faceted coating structure was found to retain in both coatings.
It is expected that four possible structures, namely TiN and (Ti,V)N (B1 NaCl cubic structure), VN (face centred cubic structure) and beta-V2N (hexagonal close packed structure) may be contained in the samples.
The cubic (Ti,V)N structure has the same Bravais lattice (crystal structure) to the cubic TiN structure.
This structure will be referred to as TiN/(Ti,V)N in the present study.
A faceted coating structure was found to retain in both coatings.
It is expected that four possible structures, namely TiN and (Ti,V)N (B1 NaCl cubic structure), VN (face centred cubic structure) and beta-V2N (hexagonal close packed structure) may be contained in the samples.
The cubic (Ti,V)N structure has the same Bravais lattice (crystal structure) to the cubic TiN structure.
This structure will be referred to as TiN/(Ti,V)N in the present study.
Online since: September 2007
Authors: V. Dondur, R. Dimitrijević, A. Kremenović, B. Nedić
The crystal structures of diphyllosilacetes have been refined.
The structure of BAS:Yb 3+ was refined into the space group P 3 , while the structure of SAS:Yb 3+ was refined into the space group P 3 c1.
The initial model of Ba-hexacelsian structure was adopted from Kremenovic et al. [22], and the initial model for Sr-hexacelsian structure was adopted from Nedic et al. [23].
It can be concluded, therefore, that Yb ions are incorporated into the structures.
Fig. 2 Crystal structure of hexacelsian (projection in ab plane).
The structure of BAS:Yb 3+ was refined into the space group P 3 , while the structure of SAS:Yb 3+ was refined into the space group P 3 c1.
The initial model of Ba-hexacelsian structure was adopted from Kremenovic et al. [22], and the initial model for Sr-hexacelsian structure was adopted from Nedic et al. [23].
It can be concluded, therefore, that Yb ions are incorporated into the structures.
Fig. 2 Crystal structure of hexacelsian (projection in ab plane).
Online since: August 2015
Authors: Oratai Jongprateep, Tunchanoke Khongnakhon, Jednupong Palomas
Crystal structure can also affect polarization, which consequently influences dielectric constant of the dielectric materials [6].
In order to obtain the desired composition and structure, synthesis of barium titanate needs to be carefully monitored.
Extensive studies have been conducted to modify crystal structure of dielectric materials through doping.
Role of yttrium and magnesium in the formation of core-shell structure of BaTiO3 grains in MLCC.
Materials Chemistry and Physics. 104 (2007) 261-266
In order to obtain the desired composition and structure, synthesis of barium titanate needs to be carefully monitored.
Extensive studies have been conducted to modify crystal structure of dielectric materials through doping.
Role of yttrium and magnesium in the formation of core-shell structure of BaTiO3 grains in MLCC.
Materials Chemistry and Physics. 104 (2007) 261-266
Online since: December 2019
Authors: Zulia Hasratiningsih, Arief Cahyanto, Veni Takarini, Yanwar Faza, Andrie Harmaji
Metakaolin-based porous geopolymer had been successfully developed using aluminum powder by creating bubbles in the structure.
These structures were required to mimic the spongy bone thus may be applied as bone substitute materials.
However, these materials have to synthesize mimicking the bone structure to optimize its function.
Nikaido et al., (2015) had used polyurethane foam replica method to develop the interconnected porous structure of ceramic that similar to bone structure.
Bone repair in the twenty-first century: biology, chemistry or engineering?.
These structures were required to mimic the spongy bone thus may be applied as bone substitute materials.
However, these materials have to synthesize mimicking the bone structure to optimize its function.
Nikaido et al., (2015) had used polyurethane foam replica method to develop the interconnected porous structure of ceramic that similar to bone structure.
Bone repair in the twenty-first century: biology, chemistry or engineering?.
Online since: July 2021
Authors: Viktor Vasilevich Ovchinnikov, A.N. Feofanov, A.M. Gubin
The Structure and Properties of Dispersed Aluminium Composite Compounds Made by Welding Friction with Mixing
A.N.
Introduction One of the important areas of development of modern technology is to reduce the mass and size of structures while maintaining their functionality.
Both their internal structure and the structure of the interphase surfaces of the delineation with the matrix depend on the size of the particles themselves.
In addition, as the particle size increases, they increase the density of structure defects, the number of doubles and packaging defects.
G., Arc welding of discretely reinforced compositional material of the Al-SiC, Physics and chemistry of materials processing, №4 (1999) 57-62
Introduction One of the important areas of development of modern technology is to reduce the mass and size of structures while maintaining their functionality.
Both their internal structure and the structure of the interphase surfaces of the delineation with the matrix depend on the size of the particles themselves.
In addition, as the particle size increases, they increase the density of structure defects, the number of doubles and packaging defects.
G., Arc welding of discretely reinforced compositional material of the Al-SiC, Physics and chemistry of materials processing, №4 (1999) 57-62