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Online since: September 2011
Authors: Jin Qiang Liu, Chun Jie Qian, Ting Ting Liu, Yong Qiang Li
Fourier transform infrared spectroscopy (FTIR) was used to identify the structure of the grafted fabric.
Fourier transform infrared spectroscopy (FTIR) was used to identify the structure of the grafted fabric.
Acknowledgments This research was funded by Zhejiang Provincial Top Academic Discipline of Applied Chemistry and Eco-Dyeing & Finishing Engineering (ZYG2010017 and 111125A4X05016).
Fourier transform infrared spectroscopy (FTIR) was used to identify the structure of the grafted fabric.
Acknowledgments This research was funded by Zhejiang Provincial Top Academic Discipline of Applied Chemistry and Eco-Dyeing & Finishing Engineering (ZYG2010017 and 111125A4X05016).
Online since: January 2013
Authors: Fabrizio Roccaforte, Filippo Giannazzo, Patrick Fiorenza, L. Swanson, G. Fisichella, A. Marino, G. Malandrino, Raffaella Lo Nigro, Giuseppe Greco, C. Bongiorno, S. Di Franco
Roccaforte1,b
1 CNR-IMM, Catania, Italy
2 Scuola Superiore di Catania – University of Catania, Italy
3 Department of Physics and Astronomy, University of Catania, Italy
4 Department of Electronic Engineering, University of Catania, Italy
5 Department of Chemistry, University of Catania, Italy
a raffaella.lonigro@imm.cnr.it, b fabrizio.roccaforte@imm.cnr.it
Keywords: Nickel Oxide, GaN, SiC.
The electrical characterization of simple devices onto AlGaN/GaN heterostructures enabled to demonstrate a dielectric constant of 11.7 and a reduction of the leakage current in insulated gate structures.
This latter is the usual behavior expected in a HEMT structure in the presence on an insulated gate (MISHFET).
The electrical characterization of simple devices onto AlGaN/GaN heterostructures enabled to demonstrate a dielectric constant of 11.7 and a reduction of the leakage current in insulated gate structures.
This latter is the usual behavior expected in a HEMT structure in the presence on an insulated gate (MISHFET).
Online since: May 2025
Authors: Rachid Oukhrib, Salaheddine Farsad, Mohamed Benafqir, Avni Berisha, Mustapha Ait El Had, Mahamadou Seydou, Noureddine El Alem, Noureddine Elboughdiri
DFT calculations
Fig. 2, depicts the geometry of the structures a.
The optimized structures obtained are acu and aPb which show the adsorption of copper and lead by the structure a.
In addition, the optimized structures cCu and cPb presented the optimized structure of the c. reticulated GOx - ED (cross-linked) with heavy metals adsorption of copper and laud, respectively.
Strong bonds with Cu (II)—Gox ≤ 2.5 Å are formed in all investigated studied structures of a.
Gérard, Quantum chemistry insight into Mg-substitution in chlorophyll by toxic heavy metals : Cd , Hg and Pb, Chem.
The optimized structures obtained are acu and aPb which show the adsorption of copper and lead by the structure a.
In addition, the optimized structures cCu and cPb presented the optimized structure of the c. reticulated GOx - ED (cross-linked) with heavy metals adsorption of copper and laud, respectively.
Strong bonds with Cu (II)—Gox ≤ 2.5 Å are formed in all investigated studied structures of a.
Gérard, Quantum chemistry insight into Mg-substitution in chlorophyll by toxic heavy metals : Cd , Hg and Pb, Chem.
Online since: December 2024
Authors: Masato Tominaga, Yogi Mirza Pangestu Utomo, Risnawati Risnawati, Fredy Kurniawan, Andi Idhil Ismail, Yunita Triana, Widi Astuti, Fikan Mubarok Rohimsyah
Oil Palm Empty Fruit Bunch (OPEFB) Activated Carbon as Promising Electrode Materials for Battery
Yogi Mirza Pangestu Utomo1,2,a, Risnawati Risnawati1,2,b, Fikan Mubarok Rohimsyah1,c, Masato Tominaga3,d, Fredy Kurniawan4,e, Widi Astuti5,f, Andi Idhil Ismail6,g, Yunita Triana1,2,f
1Materials and Metallurgical Engineering, Institut Teknologi Kalimantan, Balikpapan 76125, Indonesia
2Electrochemistry Research Center, Institut Teknologi Kalimantan, Balikpapan 76125, Indonesia
3Department of Chemistry and Applied Chemistry, Saga University, Saga 840-8502, Japan
4Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
5Research Center for Mining Technology, National Research, and Innovation Agency (BRIN), Lampung 35361, Indonesia
6Department of Mechanical Engineering, Institut Teknologi Kalimantan, Balikpapan 76125, Indonesia
a06191061@student.itk.ac.id, b06191053@student.itk.ac.id, cfikan.mubarok@lecturer.itk.ac.id, dmasato@cc.saga-u.ac.jp, efredy@chem.its.ac.id
As an example, it can be seen that from the five samples, it is indicated that the 1 M carbon sample has the highest surface area compared to samples with other concentrations, namely 242,596 m2g-1, while when compared to other carbon samples, 1.5 M, 2 M, and 2.5 M only produced 214.487 m2g-1, 89.6647 m2g-1, and 14.5808 m2g-1, it can be concluded that there is a pattern of decreasing surface area from 0,5 M to 2.5 M as the concentration of NaOH is added, this is following what was stated by[35] Excessive concentration of NaOH can cause sodium carbonate (Na2Co3) to appear in the carbon structure, persisting even after several pieces of washing.
The structure of the porous network.
The difference in the number of carbons in each activation is caused by the high temperature in the physical activation process, and the activation process triggers the release of other elements from the structure, such as oxygen and impurities attached to the surface of the OPEFB activated carbon[42].
As an example, it can be seen that from the five samples, it is indicated that the 1 M carbon sample has the highest surface area compared to samples with other concentrations, namely 242,596 m2g-1, while when compared to other carbon samples, 1.5 M, 2 M, and 2.5 M only produced 214.487 m2g-1, 89.6647 m2g-1, and 14.5808 m2g-1, it can be concluded that there is a pattern of decreasing surface area from 0,5 M to 2.5 M as the concentration of NaOH is added, this is following what was stated by[35] Excessive concentration of NaOH can cause sodium carbonate (Na2Co3) to appear in the carbon structure, persisting even after several pieces of washing.
The structure of the porous network.
The difference in the number of carbons in each activation is caused by the high temperature in the physical activation process, and the activation process triggers the release of other elements from the structure, such as oxygen and impurities attached to the surface of the OPEFB activated carbon[42].
Online since: June 2014
Authors: Cosme Roberto Moreira Silva, Paola Cristina Cajas, J.E. Rodriguez, R.A. Muñoz, A.C.M. Rodrigues
For these applications, the zirconia must possess the fluorite type crystal structure, or close to it.
Such oxides with this structure are the classic oxygen ion conductors [2].
The fluorite structure consists of a cubic lattice of oxygen ions surrounded by cations.
The cations are arranged in a face centered cubic structure with anions occupying tetrahedral positions.
This leads to an open structure with large empty octahedral interstices.
Such oxides with this structure are the classic oxygen ion conductors [2].
The fluorite structure consists of a cubic lattice of oxygen ions surrounded by cations.
The cations are arranged in a face centered cubic structure with anions occupying tetrahedral positions.
This leads to an open structure with large empty octahedral interstices.
Online since: April 2008
Authors: I. Sperberga, A. Hmelov, U. Sedmalis, A. Actins, Gaida M. Sedmale
Phase Formation and Structure of Mullite-Alumina-Zirconia and SpinelEnstatite
Ceramics Developed from Synthetic and Mineral raw materials
G.
ACTINS 5, 1,2,3,4 Riga Technical University, Institute of Silicate materials, Azenes Str.14/24, Riga LV 1048, Latvia, e- mail: gsedmale@ktf.rtu.lv, (5 ) Latvian University, Faculty of Chemistry, Valdemara Str.32, Riga LV 1013, Latvia e- mail: aactins@latnet.lv Keywords: Mullite-corundum-ZrO2, spinel-enstatite/forsterite ceramics, phases composition, mineral raw materials -illite clay and dolomite.
The XRD results indicate that ZrO2 monoclinic/tetragonal incorporation in mullite (corundum) structure realizes through the liquid phase.
For the second series samples, except I and II which characterize by well shaped crystalline structure mainly formed from rhombic-dipiramidal cordierite-indialite crystals (Fig.7a), for others - IV- and V-ceramic samples ((Fig.7b,c) - the microstructure from spinel and enstatite in crystalline, and amorphous and gassy phases is formed.
The XRD results indicate that ZrO2 monoclinic/tetragonal incorporation in mullite (corundum) structure realizes through the liquid phase.
ACTINS 5, 1,2,3,4 Riga Technical University, Institute of Silicate materials, Azenes Str.14/24, Riga LV 1048, Latvia, e- mail: gsedmale@ktf.rtu.lv, (5 ) Latvian University, Faculty of Chemistry, Valdemara Str.32, Riga LV 1013, Latvia e- mail: aactins@latnet.lv Keywords: Mullite-corundum-ZrO2, spinel-enstatite/forsterite ceramics, phases composition, mineral raw materials -illite clay and dolomite.
The XRD results indicate that ZrO2 monoclinic/tetragonal incorporation in mullite (corundum) structure realizes through the liquid phase.
For the second series samples, except I and II which characterize by well shaped crystalline structure mainly formed from rhombic-dipiramidal cordierite-indialite crystals (Fig.7a), for others - IV- and V-ceramic samples ((Fig.7b,c) - the microstructure from spinel and enstatite in crystalline, and amorphous and gassy phases is formed.
The XRD results indicate that ZrO2 monoclinic/tetragonal incorporation in mullite (corundum) structure realizes through the liquid phase.
Online since: June 2015
Authors: M.A. Kuznetsov, Evgeniy A. Zernin, A.S. Lukashov
Modifying of weld metal structure with nano tungsten carbides, J.
Physics and chemistry of materials processing. 6 (2009) 41-47
[4] Sokolov G.N., Troshkov A.S., Effect of nano carbides WC and nickel on weld metal structure and properties, J.
Part 3 – Structure, Phase State and Internal Stress Fields in samples, J.
Erosion and abrasion wear resistance of GMA wire surfaced with nano-structured deposits, J.
Physics and chemistry of materials processing. 6 (2009) 41-47
[4] Sokolov G.N., Troshkov A.S., Effect of nano carbides WC and nickel on weld metal structure and properties, J.
Part 3 – Structure, Phase State and Internal Stress Fields in samples, J.
Erosion and abrasion wear resistance of GMA wire surfaced with nano-structured deposits, J.
Online since: February 2018
Authors: Aleksandra Jurkane, Sergejs Gaidukov
On PEO-Based MWCNT and Graphene Composite Electrolyte Structure
Aleksandra Jurkanea* and Sergey Gaidukovb
Riga Technical University, Faculty of Materials Science and Applied Chemistry,
Institute of Polymer Materials, P.
To understand the effect of carbon based nanofillers on nanocomposite polymer electrolyte structure, this paper reports the preparation and structure studies on lithium cation conducting nanocomposite PEO/5%Li/nMWCNT/nGR electrolytes, where “n” is in wt% (n=0, 0.05, 0.25, 0.5).
To understand the effect of carbon based nanofillers on nanocomposite polymer electrolyte structure, the following measurements were performed: 1) the mass density of the electrolytes was determined by hydrostatic weighing in n-hexane and air using Sartorius KB BA 100 device.
Conclusions The evaluation of the effect of graphene nanoplatelets and multiwall carbon nanotubes on nano-composite PEO electrolyte structure is analysed.
To understand the effect of carbon based nanofillers on nanocomposite polymer electrolyte structure, this paper reports the preparation and structure studies on lithium cation conducting nanocomposite PEO/5%Li/nMWCNT/nGR electrolytes, where “n” is in wt% (n=0, 0.05, 0.25, 0.5).
To understand the effect of carbon based nanofillers on nanocomposite polymer electrolyte structure, the following measurements were performed: 1) the mass density of the electrolytes was determined by hydrostatic weighing in n-hexane and air using Sartorius KB BA 100 device.
Conclusions The evaluation of the effect of graphene nanoplatelets and multiwall carbon nanotubes on nano-composite PEO electrolyte structure is analysed.
Online since: July 2024
Authors: Sinta Murlistyarini, Warsito Warsito, Masruri Masruri, Dwika Putri Pangesti, Asyfariatus Zulfa Azhar
The investigation explores structures with and without linked amino acid alanine through an in-silico docking approach.
Meanwhile, the ligand structure without an amino acid combines salicylic acid with other compounds using an ester bond Fig.1.
Ligand structures were drawn using Marvin Sketch and saved in PDB format.
The standard drug structures used were sourced from the PubChem database (https://pubchem.ncbi.nlm.nih.gov/).
Quan, "Application of Amino Acids in the Structural Modification of Natural Products: A Review," Frontiers in Chemistry, vol. 9 (2021), Accessed: Nov. 05, 2023.
Meanwhile, the ligand structure without an amino acid combines salicylic acid with other compounds using an ester bond Fig.1.
Ligand structures were drawn using Marvin Sketch and saved in PDB format.
The standard drug structures used were sourced from the PubChem database (https://pubchem.ncbi.nlm.nih.gov/).
Quan, "Application of Amino Acids in the Structural Modification of Natural Products: A Review," Frontiers in Chemistry, vol. 9 (2021), Accessed: Nov. 05, 2023.
Online since: August 2011
Authors: Takeshi Tanaka
Verification of Polishing Phenomena of Nickel Cylinder Using Photocatalyst and Luminous Dye Excited by Ultraviolet Ray
-Study of Ultraviolet-Ray Aided Machining-
Takeshi Tanaka1, a
1Ritsumeikan University, Research Organization of Science and Engineering
1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577 Japan
attakeshi@se.ritsumei.ac.jp
Keywords: Quantum chemistry, electron, hole, ultraviolet-ray exciting, photocatalyst, luminous dye, metal surface treatment, polishing, nickel
Abstract.
The water-soluble luminous dye(chemical structure of cathilon is shown in Fig. 1) was applied for polishing copper by mixing the substance with aluminum oxide or titanium dioxide.
Chemical structure of water-soluble luminous dye: Cathilon Brilliant Flavine Nickel (Ni) has a high anti-corrosive property and is chemically stable.
The water-soluble luminous dye(chemical structure of cathilon is shown in Fig. 1) was applied for polishing copper by mixing the substance with aluminum oxide or titanium dioxide.
Chemical structure of water-soluble luminous dye: Cathilon Brilliant Flavine Nickel (Ni) has a high anti-corrosive property and is chemically stable.