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Online since: April 2015
Authors: Tadeusz Knych, Piotr Uliasz, Marzena Piwowarska-Uliasz
Its important characteristics include the structure modification ability, the ability to control the recrystallization process and heat resistance, and the ability to improve the strength properties.
Within the scope of the examined composition, zirconium can be precipitated in two forms of the same stoichiometry Al3Zr and specifically the structure DO23 and L12.
Properties of the wires obtained as a result of these processes depend on the metallurgical factors, the chemical purity, and the structure created in the process of plastic forming and heat treatment.
The images for the wires obtained from the CCR wire rod show the typical materials of fibrous grain structure with an insignificant number of separations.
F.: Aluminum alloys: Structure and properties, Butter Worths Group, 1976 [8] Wang T., Jin Z., Zhao J.
Within the scope of the examined composition, zirconium can be precipitated in two forms of the same stoichiometry Al3Zr and specifically the structure DO23 and L12.
Properties of the wires obtained as a result of these processes depend on the metallurgical factors, the chemical purity, and the structure created in the process of plastic forming and heat treatment.
The images for the wires obtained from the CCR wire rod show the typical materials of fibrous grain structure with an insignificant number of separations.
F.: Aluminum alloys: Structure and properties, Butter Worths Group, 1976 [8] Wang T., Jin Z., Zhao J.
Online since: April 2020
Authors: Libor Ďuriška, Martin Pipíška, Simona Ballova, Vladimir Fristak, Miroslav Hornik, Gerhard Soja, Stefan Demcak, Marian Holub
Mainly the feedstock character and structure can be crucial in resulting properties of pyrolysis products.
The surface structure analyses were performed by scanning electron microscope JEOL JSM7600F (Japan).
Similarly, WC has slit-shaped pores from vesicles formed in wood structure due to pyrolysis at 500°C (Fig. 1B).
The CC is characterized by honeycomb structure of macropores measuring 30 – 40 µm in diameter, separated by pore walls (Fig. 1C).
On the contrary, porous structures were not observed for sewage sludge derived PCM (Fig. 1D).
The surface structure analyses were performed by scanning electron microscope JEOL JSM7600F (Japan).
Similarly, WC has slit-shaped pores from vesicles formed in wood structure due to pyrolysis at 500°C (Fig. 1B).
The CC is characterized by honeycomb structure of macropores measuring 30 – 40 µm in diameter, separated by pore walls (Fig. 1C).
On the contrary, porous structures were not observed for sewage sludge derived PCM (Fig. 1D).
Online since: September 2021
Authors: Kok Kuan Ying, Suk Fun Chin, Boon Siong Wee, Eric Kwabena Droepenu
SEM and TEM Analysis
ZnO-NPs
The SEM image of C-ZnO-NPs synthesized using gluconic acid as surfactant showed rod-like shaped structures (Fig. 4a) similar to structures synthesized by Zare et al. [34].
This was further confirmed by the TEM analysis which revealed nanorod structures (Fig. 4b) with an average diameter of 32 nm.
However, U-ZnO-NPs revealed agglomerated nano-spherical and nanorod-like structures for the two particle sizes, < 50 nm and < 100 nm respectively.
Xia, Particle size and pore structure characterization of silver nanoparticles prepared by confined arc plasma, J.
Jaakkola, Wood chemistry and isolation of extractives from wood.
This was further confirmed by the TEM analysis which revealed nanorod structures (Fig. 4b) with an average diameter of 32 nm.
However, U-ZnO-NPs revealed agglomerated nano-spherical and nanorod-like structures for the two particle sizes, < 50 nm and < 100 nm respectively.
Xia, Particle size and pore structure characterization of silver nanoparticles prepared by confined arc plasma, J.
Jaakkola, Wood chemistry and isolation of extractives from wood.
Online since: September 2011
Authors: Shun Cheng Ren, Yu Ru Bao, Xian Lun Wang
Structure
15
The cell of vertical surface is small and even, 12.1-15 marks is scored; medium-grade, 9.1-12 marks is scored; with large and uneven cell, 1-9 marks is scored.
In conclusion, the face shaping, structure and elastic toughness of the steamed bread made by frozen dough added with emulsifier were better than that of blank, but the color was a little worse.
The combination between emulsifier and amylum, protein or fats strengthened the meshwork structure and improved the stability and elastic toughness of gluten, and then promoted the quality of steamed bread.
However, after adding emulsifiers, the face shaping, structure and elastic toughness of the steamed bread steamed by frozen dough is better than that with nothing, but the color is slightly bad.
Cereal Chemistry, 1993, 70(1): 109-111
In conclusion, the face shaping, structure and elastic toughness of the steamed bread made by frozen dough added with emulsifier were better than that of blank, but the color was a little worse.
The combination between emulsifier and amylum, protein or fats strengthened the meshwork structure and improved the stability and elastic toughness of gluten, and then promoted the quality of steamed bread.
However, after adding emulsifiers, the face shaping, structure and elastic toughness of the steamed bread steamed by frozen dough is better than that with nothing, but the color is slightly bad.
Cereal Chemistry, 1993, 70(1): 109-111
Online since: January 2021
Authors: Mebrouk Ghougali, Ghani Rihia, Miloud Sebais, Mohammed Sadok Mahboub, Soraya Zeroual, Mourad Mimouni
The majority of these nanocrystals have been synthesized in a non-structured medium by a chemical route [21-22].
The elaborated ZnS nanocrystals possess a wurtzite crystal structure.
X-ray patterns confirm ZnS NCs incorporation with a wurtzite structure in the KBr matrix.
Kutty, Synthesis and photoluminescent properties of ZnS nanocrystals doped with copper and halogen, Materials Chemistry and Physics. 82 (2003) 718
Shiomi, Ultimate Confinement of Phonon Propagation in Silicon Nanocrystalline Structure, Phys.
The elaborated ZnS nanocrystals possess a wurtzite crystal structure.
X-ray patterns confirm ZnS NCs incorporation with a wurtzite structure in the KBr matrix.
Kutty, Synthesis and photoluminescent properties of ZnS nanocrystals doped with copper and halogen, Materials Chemistry and Physics. 82 (2003) 718
Shiomi, Ultimate Confinement of Phonon Propagation in Silicon Nanocrystalline Structure, Phys.
Online since: April 2021
Authors: Harvis Bamidele Saka, Elijah Olawale Ajala, Sherif Ishola Mustapha, Ishaq Alhassan Mohammed, Mutiu Kolade Amosa, Idowu Abdulfatai Tijani, Esther Olubunmi Babatunde, Bamidele Ogbe Solomon, Fatai Alade Aderibigbe
The scanning electron microscopy (XL30 S-FEG SEM) and energy dispersive X-ray spectroscopy were used to examine the surface morphological structure and the elemental composition of the catalyst respectively.
The range of 2θ = 5.0024 to 74.9684 with scanning step time of 29.07 seconds was used to determine the chemical phase and the crystalline structure of the bi-functional catalyst.
Fig. 4: EDX Chart of the Formulated Bi-functional Catalyst (60 wt%/40 wt%) Fig. 5: Elemental Composition of the Bi-functional Catalyst Fig. 6: FTIR Spectra of the Formulated Bi-functional Catalyst (60 wt%/40 wt%) Furthermore, to acquire information about the catalyst crystalline structure, the XRD pattern was performed and the peaks are shown in Fig. 7.
Industrial and Engineering Chemistry Research, 57(2018) 11645–11657
Balbaa, Production of biodiesel from waste vegetable oil via KM micromixer, Journal of chemistry. (2015) 1-9.
The range of 2θ = 5.0024 to 74.9684 with scanning step time of 29.07 seconds was used to determine the chemical phase and the crystalline structure of the bi-functional catalyst.
Fig. 4: EDX Chart of the Formulated Bi-functional Catalyst (60 wt%/40 wt%) Fig. 5: Elemental Composition of the Bi-functional Catalyst Fig. 6: FTIR Spectra of the Formulated Bi-functional Catalyst (60 wt%/40 wt%) Furthermore, to acquire information about the catalyst crystalline structure, the XRD pattern was performed and the peaks are shown in Fig. 7.
Industrial and Engineering Chemistry Research, 57(2018) 11645–11657
Balbaa, Production of biodiesel from waste vegetable oil via KM micromixer, Journal of chemistry. (2015) 1-9.
Online since: January 2012
Authors: Y.H. Yuan, X.N. Ying, J.S. Zhu
Crystal structure of the YBaCuFeO5+δ compound.
The double perovskite structure YBaCu2O5+δ was expected to be a good candidate for novel superconductor [10].
Niarchos, Magnetic structure of the oxygen-deficient perovskite YBaCuFeO5+δ, Inorg.
Raveau, Crystal and magnetic structure of YBaCuFeO5, J.
Zhou, Structural Chemistry and Conductivity of a Solid Solution of YBa1-xSrxCo2O5+δ, J.
The double perovskite structure YBaCu2O5+δ was expected to be a good candidate for novel superconductor [10].
Niarchos, Magnetic structure of the oxygen-deficient perovskite YBaCuFeO5+δ, Inorg.
Raveau, Crystal and magnetic structure of YBaCuFeO5, J.
Zhou, Structural Chemistry and Conductivity of a Solid Solution of YBa1-xSrxCo2O5+δ, J.
Online since: September 2021
Authors: Lyubov A. Zenitova, Elvira N. Nurieva, Tatyana R. Safiullina
., Kazan, Russia
2Department of Biotechnology, Nizhnekamsk Institute of Chemistry and Technology (Branch), Kazan National Research Technological University, 47 Prospect Stroiteley, Nizhnekamsk, Russia
asafiullina.tr@gmail.com, bnurieva-nk@yandex.ru, cliubov_zenitova@mail.ru.
This is due to the specific microphase structure of PU, in which flexible and rigid segments are thermodynamically incompatible [3].
Apparently, in this case, we observe loosening of the sample structure due to high content of foreign filler inclusions.
This is also indicated by the fact that visual inspection does not show any changes in color and changes in the structure of the samples.
This is also indicated by the fact that visual inspection does not observe any changes in color and changes in the structure of the samples.
This is due to the specific microphase structure of PU, in which flexible and rigid segments are thermodynamically incompatible [3].
Apparently, in this case, we observe loosening of the sample structure due to high content of foreign filler inclusions.
This is also indicated by the fact that visual inspection does not show any changes in color and changes in the structure of the samples.
This is also indicated by the fact that visual inspection does not observe any changes in color and changes in the structure of the samples.
Online since: October 2010
Authors: Jie Liu, Jun You Liu, Xue Yun Gao, Man Li Shi
The crystal structure of austenite (CFe15.1) belongs to face-centered cubic lattice, its lattice parameters are:
a = b = c = 3.618 Å (11)
Observing the crystal structure of WC, the atom arrangements in the crystal face {0001} are similar to that in the crystal face {100} of austenite.
Fig. 10 and Table 4 show the main covalent bonds and the valence electron structure of WC respectively.
Seeing Table 4, W-C bond is the strongest one in the crystal structure of WC [15], and exists in the three crystal faces of (110), (20), (20).
Combining with Fig. 4, it is explained that WC shows the thin stick seen from the a1 axis, or a2 axis, or a3 axis of hexagonal structure.
Hu: Physical chemistry (in Chinese), Beijing: Higher Education Press, (2005), p. 94 [12] Y.
Fig. 10 and Table 4 show the main covalent bonds and the valence electron structure of WC respectively.
Seeing Table 4, W-C bond is the strongest one in the crystal structure of WC [15], and exists in the three crystal faces of (110), (20), (20).
Combining with Fig. 4, it is explained that WC shows the thin stick seen from the a1 axis, or a2 axis, or a3 axis of hexagonal structure.
Hu: Physical chemistry (in Chinese), Beijing: Higher Education Press, (2005), p. 94 [12] Y.
Online since: July 2019
Authors: Xiao Wu Li, Ying Wang, Dong Han
The planarity of dislocation morphology in Cu-Al and Cu-Zn alloys is promoted by the joint influences of the decrease in SFE and the increase in degree of short-range ordered structures.
Fig. 4 Dislocation structures of the Cu-5at.
Apparently, the dislocation structures exhibit the typical wavy-slip type morphologies.
In contrast, the dislocation structures of the Cu-10at.
For the Cu-20at%Ni alloy, the dislocation structures at 100°C consist of the uniformly-distributed dislocation cells (Fig. 4g).
Fig. 4 Dislocation structures of the Cu-5at.
Apparently, the dislocation structures exhibit the typical wavy-slip type morphologies.
In contrast, the dislocation structures of the Cu-10at.
For the Cu-20at%Ni alloy, the dislocation structures at 100°C consist of the uniformly-distributed dislocation cells (Fig. 4g).