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Online since: November 2013
Authors: Da Yi Li, Qiu Zhan Zhou, Yu Jiang Wang
Green Chemistry and Process Laboratory, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, China
azhouqz@jlu.edu.cn, bdayi_lee@hotmail.com, cwangyj@ciac.jl.cn
Corresponding author: Qiuzhan Zhou E-mail: zhouqz@jlu.edu.cn full telephone: +8618686514131
Keywords: microflow-electrochemical accelerometer; hemodynamic model; thermohydrodynamic noise; convection-induced noise.
However, internal frail structure such as inertial mass and fiber core consider traditional inertial sensors are expensive with low reliability.
They inherently avoid frail structure without compromising performance.
In this paper, the electrolyte hydrodynamic model of MEA is established with modeling and numerical simulation method of aortic hemodynamics, and used it in MEA’s self-noise analysis to optimizing the internal electrode configuration, thus reduced the self-noise and improves the quality of the output characteristics. 2 A Typical Structure and Operation Principle 1- Electrolyte cell 2- Electrolyte 3- Via hole 4- Dielectric spacers 5- Anode 6- Cathode Fig. 1Typical Structure of MEA The simplified sketch of MEA structure is shown in Fig.1.The core components of MEA include a electrolyte cell, electrolyte, electrode and dielectric spacers.
The electrode structure discussed in this paper with optimized geometrical parameters can reduce self-noise effectively.
However, internal frail structure such as inertial mass and fiber core consider traditional inertial sensors are expensive with low reliability.
They inherently avoid frail structure without compromising performance.
In this paper, the electrolyte hydrodynamic model of MEA is established with modeling and numerical simulation method of aortic hemodynamics, and used it in MEA’s self-noise analysis to optimizing the internal electrode configuration, thus reduced the self-noise and improves the quality of the output characteristics. 2 A Typical Structure and Operation Principle 1- Electrolyte cell 2- Electrolyte 3- Via hole 4- Dielectric spacers 5- Anode 6- Cathode Fig. 1Typical Structure of MEA The simplified sketch of MEA structure is shown in Fig.1.The core components of MEA include a electrolyte cell, electrolyte, electrode and dielectric spacers.
The electrode structure discussed in this paper with optimized geometrical parameters can reduce self-noise effectively.
Online since: September 2024
Authors: Chatchai Putson, Suphita Chaipo
The polarization of asymmetric crystal structure defines it.
GPN, conductive filler in C-bases treated as the electrode in the composites structure.
Polymeric base composite film has the high flexibility that easy to realignment from a-phase to b-phase structure by chemical interaction between matrix and filler.
Poelman: Journal of Materials Chemistry A: Materials for energy and sustainability Vol. 9 no. 34 (2021) p. 18026–18085 [7] Z.
Zhu: Journal of Physical Chemistry Letters Vol. 5 no. 21 (2014) p. 3677–3687 [13] H.
GPN, conductive filler in C-bases treated as the electrode in the composites structure.
Polymeric base composite film has the high flexibility that easy to realignment from a-phase to b-phase structure by chemical interaction between matrix and filler.
Poelman: Journal of Materials Chemistry A: Materials for energy and sustainability Vol. 9 no. 34 (2021) p. 18026–18085 [7] Z.
Zhu: Journal of Physical Chemistry Letters Vol. 5 no. 21 (2014) p. 3677–3687 [13] H.
Online since: October 2025
Authors: Myroslav Malovanyy, Halyna Krusir, Viktoria Kochubei, Svitlana Yaholnyk
Additionally, by analyzing the pattern of water loss, it is possible to assess the impact of various factors on the mineral's structure [16].
As a result, the modified clinoptilolite can absorb dye molecules not only on its outer surface but also within its internal structure.
Such clinoptilolite gains the ability to sorb dye molecules not only on its outer surface but also within its internal structure.
Slyuzar, Perspectives of Treatment of Water Environments from Pollutants with Ultrasound-Activated Bentonites, Chemistry & Chemical Technology. 17 (4) (2023) 870-877
Sharashenidze, Effect of zeolites modification on their adsorption properties, Chemistry, Physics and Technology of Surface. 15 (1) (2024) 77-85
As a result, the modified clinoptilolite can absorb dye molecules not only on its outer surface but also within its internal structure.
Such clinoptilolite gains the ability to sorb dye molecules not only on its outer surface but also within its internal structure.
Slyuzar, Perspectives of Treatment of Water Environments from Pollutants with Ultrasound-Activated Bentonites, Chemistry & Chemical Technology. 17 (4) (2023) 870-877
Sharashenidze, Effect of zeolites modification on their adsorption properties, Chemistry, Physics and Technology of Surface. 15 (1) (2024) 77-85
Online since: April 2020
Authors: Poedji Loekitowati Hariani, Muryati Muryati, Muhammad Said, Salni Salni
Palembang Prabumulih Km 32 Indralaya OI, Indonesia
2Master Programme in Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Jl.
In addition, the hydroxyapatite structure is similar to bone structure [5, 6].
The OH group destroys bacterial cell walls by combining N-acetyl muramic acid into mucopeptide structures while the destruction of bacterial protein structures is caused by the occurrence of protein denaturation due to chemicals.
The difference in diameter inhibition of the two bacteria is different due to differences in the membrane structure of the bacterial [31].
Jamshidi, Synthesis methods for nanosized hydroxyapatite with diverse structures, Acta Biomater. 9 (2013) 7591-7621
In addition, the hydroxyapatite structure is similar to bone structure [5, 6].
The OH group destroys bacterial cell walls by combining N-acetyl muramic acid into mucopeptide structures while the destruction of bacterial protein structures is caused by the occurrence of protein denaturation due to chemicals.
The difference in diameter inhibition of the two bacteria is different due to differences in the membrane structure of the bacterial [31].
Jamshidi, Synthesis methods for nanosized hydroxyapatite with diverse structures, Acta Biomater. 9 (2013) 7591-7621
Online since: May 2021
Authors: O.A. Miryuk
., 38, Rudny, 111500, Kazakhstan
apsm58@mail.ru
Keywords: silicate compositions, fillers, thermal expansion, cellular structure
Abstract.
Silipor structure is not stable in composite materials.
When the temperature reached 725 ⁰С, the average size of the cells in the structure was 1.0 – 1.5 mm (Fig. 6).
Highly porous cellular structure provides the granular material with a bulk density of 300 kg/m3 with heat-shielding properties.
Kazmina, Use of byproducts of acidic processing of aluminium-bearing raw materials in production of heat insulating materials, Procedia Chemistry. 10 (2014) 525 – 529
Silipor structure is not stable in composite materials.
When the temperature reached 725 ⁰С, the average size of the cells in the structure was 1.0 – 1.5 mm (Fig. 6).
Highly porous cellular structure provides the granular material with a bulk density of 300 kg/m3 with heat-shielding properties.
Kazmina, Use of byproducts of acidic processing of aluminium-bearing raw materials in production of heat insulating materials, Procedia Chemistry. 10 (2014) 525 – 529
Online since: October 2020
Authors: R.N. Faria, Ivana Conte Cosentino, P.V.D. Cruz, E. Galego, D.S. Yoshikawa
A few investigations have been carried out to modify the structure of activated carbon in order to improve the supercapacitorsproperties [4,5] .The starting high surface area carbon material exhibit many impurity and functional groups in the porous structure [6].
The activated structures have been studied using scanning electron macroscopy (SEM) and X-ray diffraction.
The former show a more needle-like structure whereas the latter a substantially faceted structure.
A somewhat coarser structure can be observed in the commercial activated carbon material.
Centeno: Journal of Electroanalytical Chemistry Vol. 667 (2011), p. 176 [4] V.
The activated structures have been studied using scanning electron macroscopy (SEM) and X-ray diffraction.
The former show a more needle-like structure whereas the latter a substantially faceted structure.
A somewhat coarser structure can be observed in the commercial activated carbon material.
Centeno: Journal of Electroanalytical Chemistry Vol. 667 (2011), p. 176 [4] V.
Online since: June 2012
Authors: Jian Peng Wu, Li Yun Cao, Jian Feng Huang, Dun Qiang Wang
Synthesis of LiV3O8 Crystallites via an Improved Citric Acid Assisted Sol-Gel Method
Wang Dun-qianga, Cao Li-yunb, Huang Jian-fengc and Wu Jian-pengd
Key Laboratory of Auxiliary Chemistry & Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi’an Shaanxi 710021, China
awangdunqiang007@163.com, bcaoliyun@sust.edu.cn,
chuangjf@sust.edu.cn (corresponding author), dwujianpeng@sust.edu.cn
Keywords: Lithium trivanadate; Sol-gel process; Ultrasonic irradiation; Structure and morphology
Abstract.
The structures of the as-synthesized powders were identified using X-ray diffraction (XRD, Rigaku Dmax-2000), Fourier transform infrared (FT-IR) absorption spectra (FTIR, Nicolet NEXUS670) and field emission scanning electron microscopy (FESEM, JEOL JSM-6390A).
It shows that the diffraction peaks of the powders prepared at 350 and 400 °C are well indexed in a typical layered LiV3O8 (JCPDS No.72-1193) without any impurities, which means that the as-synthesized LiV3O8 crystallites have a single monoclinic crystalline structure and belong to the P21/m space group.
The structures of the as-synthesized powders were identified using X-ray diffraction (XRD, Rigaku Dmax-2000), Fourier transform infrared (FT-IR) absorption spectra (FTIR, Nicolet NEXUS670) and field emission scanning electron microscopy (FESEM, JEOL JSM-6390A).
It shows that the diffraction peaks of the powders prepared at 350 and 400 °C are well indexed in a typical layered LiV3O8 (JCPDS No.72-1193) without any impurities, which means that the as-synthesized LiV3O8 crystallites have a single monoclinic crystalline structure and belong to the P21/m space group.
Online since: May 2011
Authors: Bao Jun Han
Microstructure Characterization of Hot Deformed Fe-32%Ni Alloy
Baojun Han
School of Chemistry and Life Science, GanNan Normal University, Ganzhou 341000, P.R.China
hanbaojun80@tom.com
Keywords: Hot deformation; Fe-32%Ni alloy; Dynamic recrystallization; Microstructure evolution
Abstract.
Introduction Mechanisms for structure evolution under hot working are of great importance for the close relationship between the microstructure and properties of materials products.
Fig.4 Grain size of deformed austenite with different strains for Fe-32%Ni alloy Discussions Differing from the static recrystallization (SRX), the DRX microstructure is a kind deformed structure including dislocation substructure.
Only the proportion of the three structures is changing.
Introduction Mechanisms for structure evolution under hot working are of great importance for the close relationship between the microstructure and properties of materials products.
Fig.4 Grain size of deformed austenite with different strains for Fe-32%Ni alloy Discussions Differing from the static recrystallization (SRX), the DRX microstructure is a kind deformed structure including dislocation substructure.
Only the proportion of the three structures is changing.
Online since: August 2014
Authors: Ahmad Abdul Latif, Hui Xin Che, Swee Pin Yeap, Jit Kang Lim
The structure is synthesized via layer-by-layer assembly with the entire process driven by electrostatic interaction.
Dynamic light scattering and zeta potential measurements are employed to monitor the evolution of the nanocomposite from its constituent materials to full development of final structure.
Poly(diallyldimethylammonium chloride), (PDDA with average molecular weight, Mw~100,000-200,000 and 20wt% in water) was purchased from Aldrich Chemistry.
The smaller magnitude of zeta potential observed for the final structure compared to silica-PDDA interpreting that the integration of IOMNPs into silica-PDDA had suppressed the highly positive charge of PDDA layer.
Dynamic light scattering and zeta potential measurements are employed to monitor the evolution of the nanocomposite from its constituent materials to full development of final structure.
Poly(diallyldimethylammonium chloride), (PDDA with average molecular weight, Mw~100,000-200,000 and 20wt% in water) was purchased from Aldrich Chemistry.
The smaller magnitude of zeta potential observed for the final structure compared to silica-PDDA interpreting that the integration of IOMNPs into silica-PDDA had suppressed the highly positive charge of PDDA layer.
Online since: December 2009
Authors: Kazuyoshi Uematsu, Mineo Sato, Kenji Toda, Hiroaki Kaneko, Akiko Torisaka, Kentaro Nomizu, Sho Abe, Tadashi Ishigaki
Synthesis and luminescence properties of
non-doped long persistent phosphors : Mg2SnO4
Akiko Torisaka
1, Hiroaki Kaneko
1, Kentaro Nomizu
1, Sho Abe
1,
Tadashi Ishigaki
2*
,Kenji Toda
1,2, Kazuyoshi Uematsu
3, and Mineo Sato
2,3
1 Graduate school of science and technology, Niigata University, 8050 Ikarashi 2-cho, Niigata, Japan
2 Center for Trandisciplinary Research, Niigata University, 8050 Ikarashi 2-cho, Niigata, Japan
3 Department of Chemistry and Chemical Engineering, Niigata University, 8050 Ikarashi 2-cho, Niigata, Japan
Keywords: longpersistence phosphors, stannate, afterglow, white emission
Abstract
A white long persistence phosphor was synthesized in a single-phase of Mg2SnO4 which was
synthesized by a solid-state reaction.
This phosphor crystallized in an inverse spinel structure and showed a broad-band emission from 350nm to 700nm.
Result and discussion ・・・・Crystal structure of Mg2SnO4 Mg2SnO4 forms an inverse spinel structure, A(AB)O4 (A = Mg, B = Sn).
This structure is a cubic with space group Fd-3m and the lattice constants refined by the Rietveld method is a = 8.63(7) by Rietveld method.
It is confirmed that the Mg2SnO4 sample obtained forms an inverse spinel structure.
This phosphor crystallized in an inverse spinel structure and showed a broad-band emission from 350nm to 700nm.
Result and discussion ・・・・Crystal structure of Mg2SnO4 Mg2SnO4 forms an inverse spinel structure, A(AB)O4 (A = Mg, B = Sn).
This structure is a cubic with space group Fd-3m and the lattice constants refined by the Rietveld method is a = 8.63(7) by Rietveld method.
It is confirmed that the Mg2SnO4 sample obtained forms an inverse spinel structure.