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Online since: September 2007
Authors: U.B. Mioč, M.R. Todorović, D. Bajuk-Bogdanović, I. Holclajtner-Antunović
Bajuk-Bogdanović2,d
1
Faculty of Chemistry, P.O.
Box 158, 11001 Belgrade, Serbia 2 Faculty of Physical Chemistry, P.O.
The aim of this study is to investigate the properties of neutral and acid insoluble salts of WPA that are of importance for both HPCs applications and to contribute the a better understanding of their structure.
Differences in structures between neutral and acid salts can be reflected in their thermal properties as revealed by DTA-TG analysis.
Due to the structure of acid salt its proton conductivity is higher than for neutral salt.
Box 158, 11001 Belgrade, Serbia 2 Faculty of Physical Chemistry, P.O.
The aim of this study is to investigate the properties of neutral and acid insoluble salts of WPA that are of importance for both HPCs applications and to contribute the a better understanding of their structure.
Differences in structures between neutral and acid salts can be reflected in their thermal properties as revealed by DTA-TG analysis.
Due to the structure of acid salt its proton conductivity is higher than for neutral salt.
Online since: January 2013
Authors: Hai Yue Zhang, Peng Li
FT-IR spectroscopy analysis
FT-IR spectroscopy was used to examine the structure of ACAD flavonoids.
The results of infrared spectra showed that the structure of sample contained benzene group and phenolic hydroxy group, which was accorded with the flavonoids structure.
Infrared spectra showed that the structure of sample contained benzene group, phenolic hydroxy group, which was accorded with the flavonoids structure.
Journal of Agricultural and Food Chemistry Vol. 55(2007), P.10067-10080
Food Chemistry Vol. 114(2009), P. 1147-1154
The results of infrared spectra showed that the structure of sample contained benzene group and phenolic hydroxy group, which was accorded with the flavonoids structure.
Infrared spectra showed that the structure of sample contained benzene group, phenolic hydroxy group, which was accorded with the flavonoids structure.
Journal of Agricultural and Food Chemistry Vol. 55(2007), P.10067-10080
Food Chemistry Vol. 114(2009), P. 1147-1154
Online since: June 2024
Authors: Mita Khanam, Chanchal Kumar Roy, H.M. Mamun Al Rashed
It is also found that long period stacking ordered (LPSO) made a long lamellar like structures and it helped in the anti-corrosion properties [4].
Gd network shows lamellar network which is mainly LPSO (Long period stacking ordered) structures.
Higher Gd content can refine the grain structure of the alloy, leading to a finer and more uniform microstructure.
Gd network shows lamellar network which is mainly LPSO (Long period stacking ordered) structures
The author also thanks the Department of Chemistry, BUET, for allowing the use of equipment during the study.
Gd network shows lamellar network which is mainly LPSO (Long period stacking ordered) structures.
Higher Gd content can refine the grain structure of the alloy, leading to a finer and more uniform microstructure.
Gd network shows lamellar network which is mainly LPSO (Long period stacking ordered) structures
The author also thanks the Department of Chemistry, BUET, for allowing the use of equipment during the study.
Online since: September 2016
Authors: Maria A. Vasilyeva
Stepanov, Magnetic and viscoelastic response of elastomers with hard magnetic filler, Smart materials and structures. 24(075010) (2015)
Rudykh, G. deBotton, Magnetoactive elastomers with periodic and random microstructures, International journal of solids and structures. 51 (2014) 3012-3024
Krause, Magnetoactive liquid crystal elastomer nanocomposites, Journal of materials chemistry. 19 (2009) 538-543
Ding, Structure and Properties of Dynamically Cured Thermoplastic Vulcanizate Based on Poly (vinylidene fluoride), Silicone Rubber, and Fluororubber, Polymer-plastics technology and engineering. 54 (2015) 209-217
Bartenev, Strength and fracture mechanics of polymers, Chemistry, Moscow, 1984.
Rudykh, G. deBotton, Magnetoactive elastomers with periodic and random microstructures, International journal of solids and structures. 51 (2014) 3012-3024
Krause, Magnetoactive liquid crystal elastomer nanocomposites, Journal of materials chemistry. 19 (2009) 538-543
Ding, Structure and Properties of Dynamically Cured Thermoplastic Vulcanizate Based on Poly (vinylidene fluoride), Silicone Rubber, and Fluororubber, Polymer-plastics technology and engineering. 54 (2015) 209-217
Bartenev, Strength and fracture mechanics of polymers, Chemistry, Moscow, 1984.
Online since: October 2014
Authors: Davide Tumino, Tommaso Ingrassia, Vincenzo Nigrelli
With this approach, however, the structure obtained is usually overdimensioned.
The dimension of the structure domain is 160x100x1 mm.
The structure obtained at the end of the optimization process is shown in figure 4.
Radiation curing of carbon fibre composites (2014) Radiation Physics and Chemistry, 94 (1), pp. 14-17.
[17] Rodriguez, J., Seireg, A.A., Optimizing the shapes of structures via a rule-based computer program, Comput.
The dimension of the structure domain is 160x100x1 mm.
The structure obtained at the end of the optimization process is shown in figure 4.
Radiation curing of carbon fibre composites (2014) Radiation Physics and Chemistry, 94 (1), pp. 14-17.
[17] Rodriguez, J., Seireg, A.A., Optimizing the shapes of structures via a rule-based computer program, Comput.
Online since: February 2020
Authors: Van Thuan Le, Thi Kieu Ngan Tran, Thi Thanh Nhi Le, Dai Lam Tran, Quang Vinh Nguyen, Thanh Minh Pham, Hoang Sinh Le
Activated carbon (AC) was used as a powerful adsorbent for wastewater treatment because of its large specific surface area, porous structure, high inertia and thermal stability, and enriched surface functional groups [6-9].
Characterization of adsorbent The crystalline structure of the synthesized samples was characterized by powder X-ray diffraction (XRD) patterns recorded on a Rigaku Ultima IV X-ray diffractometer (Japan) at 40 kV/30 mA using Cu-Kα radiation (λ = 1.5406 Å) in the scanning range 2θ of 10 – 80o.
After carbonization and magnetization processes, LPSs became Fe3O4-NPs/AC, which was presented in particle size of about 10 – 50 µm with a high porous structure (Figure 3b).
[21] Yang X, Zhang X, Ma Y, Huang Y, Wang Y, Chen Y, Superparamagnetic graphene oxide–Fe3O4 nanoparticles hybrid for controlled targeted drug carriers, Journal of Materials Chemistry, 19 (2009) 2710. doi:10.1039/b821416f
[31] Grana A, Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity, Pure and Applied Chemistry, 57 (1955) 603-619. doi: 10.1351/pac198557040603
Characterization of adsorbent The crystalline structure of the synthesized samples was characterized by powder X-ray diffraction (XRD) patterns recorded on a Rigaku Ultima IV X-ray diffractometer (Japan) at 40 kV/30 mA using Cu-Kα radiation (λ = 1.5406 Å) in the scanning range 2θ of 10 – 80o.
After carbonization and magnetization processes, LPSs became Fe3O4-NPs/AC, which was presented in particle size of about 10 – 50 µm with a high porous structure (Figure 3b).
[21] Yang X, Zhang X, Ma Y, Huang Y, Wang Y, Chen Y, Superparamagnetic graphene oxide–Fe3O4 nanoparticles hybrid for controlled targeted drug carriers, Journal of Materials Chemistry, 19 (2009) 2710. doi:10.1039/b821416f
[31] Grana A, Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity, Pure and Applied Chemistry, 57 (1955) 603-619. doi: 10.1351/pac198557040603
Online since: January 2009
Authors: H. Cheraga, N. Gabouze, H. Lachenani, H. Menari
Hydrogen sensor: Effect of palladium thickness and porous structure
of silicon
H.
In the case of Pd/CHx/PS/Si structure, the current recovers rapidly and completely to the initial value which is not the case for the poreless structure.
In the H2 pressure range, the palladium modified PS structure exhibits higher amplitude of (I) responses than that of the Pd/Si (Fig.4) or CHx/PS/Si structures [1, 12].
This leads to the ohmic behavior of the structure.
Kessi, in Proceeding of the 14th International Symposium on Plasma Chemistry, Vol.
In the case of Pd/CHx/PS/Si structure, the current recovers rapidly and completely to the initial value which is not the case for the poreless structure.
In the H2 pressure range, the palladium modified PS structure exhibits higher amplitude of (I) responses than that of the Pd/Si (Fig.4) or CHx/PS/Si structures [1, 12].
This leads to the ohmic behavior of the structure.
Kessi, in Proceeding of the 14th International Symposium on Plasma Chemistry, Vol.
Online since: December 2007
Authors: Tomasz Rzychoń, Andrzej Kiełbus, Bożena Bierska-Piech
This phase has an f.c.c. structure (a = 2.2 nm), which
makes it isomorphous with Mg5Gd.
The β" metastable phase has a D019 hexagonal structure and is coherent with the α-Mg (a = 2aMg, c = cMg) matrix.
The β' transient phase has a base centered orthorhombic structure and is semicoherent with the α-Mg phase (a = 2aMg, b ≈ 8dMg(1-100), c = cMg).
The structure was refined to Rwp = 7.08 % and S = 1.93 %.
This equilibrium phase has face centered cubic crystal structure with the lattice parameter of a = 2.24 nm, which makes it isomorphous with the Mg5Gd compound.
The β" metastable phase has a D019 hexagonal structure and is coherent with the α-Mg (a = 2aMg, c = cMg) matrix.
The β' transient phase has a base centered orthorhombic structure and is semicoherent with the α-Mg phase (a = 2aMg, b ≈ 8dMg(1-100), c = cMg).
The structure was refined to Rwp = 7.08 % and S = 1.93 %.
This equilibrium phase has face centered cubic crystal structure with the lattice parameter of a = 2.24 nm, which makes it isomorphous with the Mg5Gd compound.
Co-Electrodeposition and Characterization of Ag-Ag2S-PbS Thin Films on Indium-Tin-Oxide Coated Glass
Online since: February 2014
Authors: Hong Cheng Pan, Lin Chen, Yuan Ming Zhang
Co-electrodeposition and characterization of Ag-Ag2S-PbS thin films on indium–tin-oxide coated glass
Yuanming Zhanga, Lin Chenb, and Hongcheng Panc
College of Chemistry and Bioengineering, Guilin University of Technology,
Guilin 541004, P.
The X-ray diffraction analysis demonstrated the presence of cubic structure of metallic silver, acanthite Ag2S, and cubic PbS, which is consistent with the CV analysis.
XRD analysis shows three distinct diffraction peaks of 38.08°, 44.28°, and 64.38° at 2θ values indexed to (111), (200), and (220) the crystalline planes of the face-centered cubic structure of metallic silver.
These 2θ values could be well indexed to PbS with cubic crystal structure (JCPDS 05-0592).
The X-ray diffraction analysis revealed the presence of cubic structure of metallic silver, acanthite Ag2S, and cubic PbS.
The X-ray diffraction analysis demonstrated the presence of cubic structure of metallic silver, acanthite Ag2S, and cubic PbS, which is consistent with the CV analysis.
XRD analysis shows three distinct diffraction peaks of 38.08°, 44.28°, and 64.38° at 2θ values indexed to (111), (200), and (220) the crystalline planes of the face-centered cubic structure of metallic silver.
These 2θ values could be well indexed to PbS with cubic crystal structure (JCPDS 05-0592).
The X-ray diffraction analysis revealed the presence of cubic structure of metallic silver, acanthite Ag2S, and cubic PbS.
Online since: August 2014
Authors: Noorhana Yahya, Mohamad Sahban Alnarabiji, Afza Shafie, Sharifa Bee Abd Hamid, Khairun Azizi Azizli, Hassan Solemani
The ZnO crystal and particles’ morphology and structure were determined using X-ray Diffractometer (XRD) and Field Emission Scanning Electron Microscope (FESEM).
This was performed to get a metal oxide nanoparticle structure.
X-ray diffraction was employed to determine the crystal and phase structure of the synthesized ZnO powder.
It is clear that all of the peaks in Fig.2 matched with the standard JCPDS cards of ZnO (JCPDS 79-2205) with a wurtzite hexagonal structure.
Yang, Solution-grown zinc oxide nanowires, Inorganic chemistry. 45 (2006) 7535-7543
This was performed to get a metal oxide nanoparticle structure.
X-ray diffraction was employed to determine the crystal and phase structure of the synthesized ZnO powder.
It is clear that all of the peaks in Fig.2 matched with the standard JCPDS cards of ZnO (JCPDS 79-2205) with a wurtzite hexagonal structure.
Yang, Solution-grown zinc oxide nanowires, Inorganic chemistry. 45 (2006) 7535-7543