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Online since: September 2013
Authors: Masayuki Toda, Masruroh Masruroh, Masaru Umeda
., LTD, 568 TANAKA, Fukaya shi, Saitama 369-1108
3 Department of Chemistry and Chemical Engineering, Yamagata University, Yonezawa-Yamagata 992-8510.
Moreover, Lucian et al. [12] reported the effects of both top-contact metals (Cu, Au, Al, Cr, Ni, Pd and Ag) deposited by thermal evaporation and Pt and Ta deposited by radio-frequency magnetron sputtering on the ferroelectric properties of epitaxial PZT/SRO/STO structure.
The generate substrate structure was Pt/TiN/SiO2/Si(100).
The top electrode structures were patterned with circles using a shadow mask with a diameter of 500mm.
Handbook of Chemistry and Physics, 76th (1995)
Moreover, Lucian et al. [12] reported the effects of both top-contact metals (Cu, Au, Al, Cr, Ni, Pd and Ag) deposited by thermal evaporation and Pt and Ta deposited by radio-frequency magnetron sputtering on the ferroelectric properties of epitaxial PZT/SRO/STO structure.
The generate substrate structure was Pt/TiN/SiO2/Si(100).
The top electrode structures were patterned with circles using a shadow mask with a diameter of 500mm.
Handbook of Chemistry and Physics, 76th (1995)
Online since: July 2018
Authors: Sakdiphon Thiensem, Rungsarit Koonawoot, Sittiporn Punyanitya, Warangkul Punyanitya
Novel Rice Gel for Ultrasound Applications:
Physical and Chemical Properties
Sittiporn Punyanitya1,a*, Rungsarit Koonawoot1,b, Sakdiphon Thiansem2,c
and Warangkul Punyanitya3,d
1Science and Technology Research Institute, Chiang Mai University, Chiang Mai, 50200, Thailand
2Department of Industrials Chemistry, Faculty of Science, Chiang Mai University,
Chiang Mai, 50200, Thailand
3Punyanitya Medical Instrument, 19/44, Singharaj Road, Tumbol Sriphum,
Amphur Muangchiangmai, 50200, Thailand
apunyanitya.s@gmail.com, bkoonawoot@yahoo.com, csukdipown@hotmail.com, dmariachi_rino@hotmail.com
Keywords: Ultrasound, Gelatinization, Rice starch, irritation, Ultrasound gel, Water soluble
Abstract.
When heated in the presence of water, RS undergoes an irreversible structure.
Due to both of amylose and amylopectin of RS that amylose made strength of RS structure [12, 13].
Glycerol molecule occurred physical cross linked with neighbor site chain of RS molecules as weak interaction form molecular was structure flexible [16].
Acknowledgements The authors acknowledge the financial support given by Research Administration Center, Office of the University, Chiang Mai University and Department of Industrial Chemistry, Faculty of Science, Chiang Mai University for research workplace.
When heated in the presence of water, RS undergoes an irreversible structure.
Due to both of amylose and amylopectin of RS that amylose made strength of RS structure [12, 13].
Glycerol molecule occurred physical cross linked with neighbor site chain of RS molecules as weak interaction form molecular was structure flexible [16].
Acknowledgements The authors acknowledge the financial support given by Research Administration Center, Office of the University, Chiang Mai University and Department of Industrial Chemistry, Faculty of Science, Chiang Mai University for research workplace.
Online since: May 2016
Authors: Mikael Syväjärvi, Valdas Jokubavicius, Yi Yu Ou, Wei Fang Lu, Ahmed Fadil, Volker Buschmann, Steffen Rüttinger, Paul Michael Petersen, Hai Yan Ou
Lyngby, Denmark
2 Department of Physics, Chemistry and Biology, Linköping University, SE-58183, Linköping, Sweden
3 PicoQuant GmbH, Rudower Chaussee 29, 12489 Berlin, Germany
aweilu@fotonik.dtu.dk, byiyo@fotonik.dtu.dk, cvaljo@ifm.liu.se, dafad@fotonik.dtu.dk, emisyv@ifm.liu.se, f,ginfo@picoquant.com, hpape@fotonik.dtu.dk, ihaou@fotonik.dtu.dk
Keywords: photoluminescence, fluorescent SiC, passivation, Al2O3, lifetime, ALD.
Al2O3 films deposited via Atomic Layer Deposition (ALD) provide excellent passivation for high aspect-ratio structures because of the conformal coverage and selective hydrogenation.
It can be seen from sample a that the structures are The 20nm thick Al2O3 film conformally covers the SiC nanocone structures, while the space between the nanostructures is gradually filled as the Al2O3 layer becomes thicker.
(a) Schematic of surface chemistry reaction in one deposition cycle.
Al2O3 films deposited via Atomic Layer Deposition (ALD) provide excellent passivation for high aspect-ratio structures because of the conformal coverage and selective hydrogenation.
It can be seen from sample a that the structures are The 20nm thick Al2O3 film conformally covers the SiC nanocone structures, while the space between the nanostructures is gradually filled as the Al2O3 layer becomes thicker.
(a) Schematic of surface chemistry reaction in one deposition cycle.
Online since: July 2011
Authors: Wei Shang, Yu Qing Wen, Hui Min Meng, Xiu Juan Jiang
College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004;China;
awenyuqing16@163.com, becm@mater.ustb.edu.cn, cshangw13@163.com, d806937274@qq.com
Keywords: Aluminum alloy; Composite coatings; Corrosion resistance; Electrochemical property.
The EIS tests were carried out in a frequency range from 100 kHz to 0.01 Hz with polarization amplitude of 10 mV. 3 Results and discussion 3.1 Morphology and compositions of the composite coatings Fig.1 Surface morphology of the composite coatings on aluminum alloy Fig.1 shows a surface structure of the composite coatings.
The composite coatings have a flake structure, which are mainly composed of cerium, as is confirmed by the compositions of the composite coatings shown in Table1.
The composite coatings have a flake structure, which is mainly composed of cerium.
Materials Chemistry and Physics, 2003, 82 (1):93-100
The EIS tests were carried out in a frequency range from 100 kHz to 0.01 Hz with polarization amplitude of 10 mV. 3 Results and discussion 3.1 Morphology and compositions of the composite coatings Fig.1 Surface morphology of the composite coatings on aluminum alloy Fig.1 shows a surface structure of the composite coatings.
The composite coatings have a flake structure, which are mainly composed of cerium, as is confirmed by the compositions of the composite coatings shown in Table1.
The composite coatings have a flake structure, which is mainly composed of cerium.
Materials Chemistry and Physics, 2003, 82 (1):93-100
Online since: August 2021
Authors: Zbyněk Keršner, Petr Daněk, Ondřej Koutný, Iva Rozsypalová, Emília Bystrianska, Petr Frantík
Pilot Fracture Tests of Special Fine-Grained Composites
Iva ROZSYPALOVÁ1,a*, Emília BYSTRIANSKA2,b, Ondřej KOUTNÝ3,c,
Petr DANĚK1,d, Petr FRANTÍK1,e and Zbyněk KERŠNER1,f
1Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, 602 00 Brno, Czech Republic
2Brno University of Technology, Faculty of Chemistry, Purkyňova 464/118, 612 00 Brno, Czech Republic
3BOGGES, spol. s r.o., Hněvkovského 30/65, 617 00 Brno, Czech Republic
aiva.rozsypalova@vutbr.cz, bemilia.bystrianska@vut.cz, condrej.koutny@bogges.cz, dpetr.danek@vutbr.cz, ekitnarf@centrum.cz, fkersner.z@fce.vutbr.cz
Keywords: Ultra-high performance composite, fracture test, load–displacement diagram, mechanical fracture parameters, numerical model identification.
The investigated special fine-grained composites were designed to achieve high compressive strength with a very dense structure.
The cement was supplemented with pozzolanic admixtures and a microfiller, which was used in order to achieve a denser structure and approach the ideal particle size distribution curve.
We would like to thank Patrik Bayer from the Institute of Chemistry at FAST BUT in Brno for the adjustment of the test specimens.
Materials and Structures, 18(4) (1985) 285–290
The investigated special fine-grained composites were designed to achieve high compressive strength with a very dense structure.
The cement was supplemented with pozzolanic admixtures and a microfiller, which was used in order to achieve a denser structure and approach the ideal particle size distribution curve.
We would like to thank Patrik Bayer from the Institute of Chemistry at FAST BUT in Brno for the adjustment of the test specimens.
Materials and Structures, 18(4) (1985) 285–290
Online since: July 2020
Authors: Zheng Liu, Wen Juan Su, Wei Fang Zhao, Xiao Bao Cheng, Qin Sheng Wang, Yong Qiang Yang
XPS is widely used in physics, chemistry, biomedical materials, surface science and other fields[3].
For graphene and related 2D materials, XPS is a useful measurement tool to analyze the surface chemistry.
For thin film samples prepared from two-dimensional materials, etching is very likely to cause loss of sample structure and elemental changes.
The C1s spectrum (Figure 1B) shown to exhibited a sharp single peak that means less defective SP2 structure.
Surface treatment of the sample by monatomic Ar+ have influence on the stability of surface structure of graphene films.
For graphene and related 2D materials, XPS is a useful measurement tool to analyze the surface chemistry.
For thin film samples prepared from two-dimensional materials, etching is very likely to cause loss of sample structure and elemental changes.
The C1s spectrum (Figure 1B) shown to exhibited a sharp single peak that means less defective SP2 structure.
Surface treatment of the sample by monatomic Ar+ have influence on the stability of surface structure of graphene films.
Online since: October 2017
Authors: Andrei Shishkin, Abdallah Aziz, Belkacem Bouacherine, Hafida Hentit, Jean Claude Jumas, Abdelkader Iddou
Bio-Waste Recovery for the Removal of Cr (VI) in Aqueous Solution:
Case of the Green Alga Ulva lactuca
Belkacem Bouacherine1,a, Abdelkader Iddou1,b*, Hafida Hentit1,c,
Jean Claude Jumas2,d, Abdallah Aziz1,e and Andrei Shishkin3,f
1Laboratoire de Valorisation des Matériaux, Département de Génie des Procédés, Faculté des Sciences et de la Technologie, Université Abdelhamid Ibn Badis – Mostaganem,
Bp. 227 Mostaganem, Algeria
2ICG–AIME–UMR 5253, Université de Montpellier 2, Place Eugène Bataillon CC 1502,
34095 Montpellier Cedex 05, France
3Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka 3, Riga, LV-1007, Latvia
abouacherine.b@gmail.com, babdelader.iddou@univ-mosta.dz, chentith@yahoo.fr,
djumas@univ-montp2.fr, eabyoucef_aziz@yahoo.fr, fandrej.shishkin@gmail.com
Keywords: biosolid; chromium; recovery; seaweed; Ulva lactuca; wastewater.
The spectra show that the heat treatment has no influence on the structure of the material, whereas, combined with chemical treatment ("UCP" sample), leads to a total degradation of the latter.
These results could be explained by changes in the behavior of the chemical structure of the material depending on pH of the solution.
This probably results either from the partial aggregation of the support leading thus to the decrease of the effective surface either to the destruction of the structure thus impoverishing the functional groups on the surface.
Chromium chemistry and implications for environmental fate and toxicity.
The spectra show that the heat treatment has no influence on the structure of the material, whereas, combined with chemical treatment ("UCP" sample), leads to a total degradation of the latter.
These results could be explained by changes in the behavior of the chemical structure of the material depending on pH of the solution.
This probably results either from the partial aggregation of the support leading thus to the decrease of the effective surface either to the destruction of the structure thus impoverishing the functional groups on the surface.
Chromium chemistry and implications for environmental fate and toxicity.
Online since: July 2015
Authors: Hui Ming Ji, Hai Qin Li, Yuan Liang Ma, Wei Liu, Xue Rong Zheng
In order to improve photocatalytic efficiency for environmental purification, one method is to enlarge the range of spectral response to visible light by doping TiO2 with anions or cations, or by coupling with narrow band gap semiconductors to form hetero-junction structure which has a more narrow band gap[8,9].
The structure of samples was characterized by Rigaku D/Max 2500V/PC with CuKα radiation at 40 kV and 40mA and scanned from 2q 10˚ to 90˚.
Sample 3 displayed the best combination between TiO2 and NaYF4 with more hetero-structures than other samples and it lead to the highest photocatalytic activity for degradation of organic dyes.
Industrial & Engineering Chemistry Research. 52 (2013) 3581−3599
Journal of Photochemistry and Photobiology A: Chemistry. 221(2011) 30–37
The structure of samples was characterized by Rigaku D/Max 2500V/PC with CuKα radiation at 40 kV and 40mA and scanned from 2q 10˚ to 90˚.
Sample 3 displayed the best combination between TiO2 and NaYF4 with more hetero-structures than other samples and it lead to the highest photocatalytic activity for degradation of organic dyes.
Industrial & Engineering Chemistry Research. 52 (2013) 3581−3599
Journal of Photochemistry and Photobiology A: Chemistry. 221(2011) 30–37
Online since: March 2020
Authors: Chin Hua Chia, Sarani Zakaria, Mohd Shaiful Sajab, Peter Nai Yuh Yek, Muhammad Nor Arifin Yaakob, Rasidi Bin Roslan, Siti Noor Hidayah Binti Mustapha, Nurjannah Salim
The structure of the EFB fiber surface appears rough and remain intact.
Lomonaco, Organic Solvent Fractionation of Acetosolv Palm Oil Lignin: The Role of Its Structure on the Antioxidant Activity, International Journal of Biological Macromolecules 122 (2019): 1163–72
Journal of agricultural and food chemistry, 60(7), 1703-1712
Labidi, Effect of different organosolv treatments on the structure and properties of olive tree pruning lignin.
Journal of Industrial and Engineering Chemistry 20, no. 3 (2014): 1103-1108
Lomonaco, Organic Solvent Fractionation of Acetosolv Palm Oil Lignin: The Role of Its Structure on the Antioxidant Activity, International Journal of Biological Macromolecules 122 (2019): 1163–72
Journal of agricultural and food chemistry, 60(7), 1703-1712
Labidi, Effect of different organosolv treatments on the structure and properties of olive tree pruning lignin.
Journal of Industrial and Engineering Chemistry 20, no. 3 (2014): 1103-1108
Online since: August 2014
Authors: Kayrbekov Zhaksyntay, Yermoldina Elmira, Vasilina Gulzira, Aity Kali
According to modern conceptions humic acids – this group of amorphous dark coloured aromatic polymers of oxycarbonic acids, united by general principle of structure, but different in composition in wide range depending on the character of initial charcoal.
Their acidic properties are due to the presence in the structure of HA of carboxylic and phenolic groups, the content of which changes depending on the source, from which they are extracted.
Besides, the utilization of polymermetallic complexes causes the increase of interest of researchers due to the development of combinatorial chemistry and development of new processes, including multiple use of catalysts.
Pomogailo, Polymer Supported Reactions in Organic Chemistry, Materials of 7th Intern.
Larina, Structure and properties of natural coals, Materials of conference, Moscow, 1975, p.159
Their acidic properties are due to the presence in the structure of HA of carboxylic and phenolic groups, the content of which changes depending on the source, from which they are extracted.
Besides, the utilization of polymermetallic complexes causes the increase of interest of researchers due to the development of combinatorial chemistry and development of new processes, including multiple use of catalysts.
Pomogailo, Polymer Supported Reactions in Organic Chemistry, Materials of 7th Intern.
Larina, Structure and properties of natural coals, Materials of conference, Moscow, 1975, p.159