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Online since: April 2014
Authors: Kornkamol Natrchalayuth, Pornapa Sujaridworakun
The synthesized nanoparticles were characterized for their phase structure, morphology and surface area by X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET), respectively.
For wet chemistry routes such as precipitation, hydrothermal, solvothermal, micro emulsion and sol-gel process, have been successfully performed to control various shapes, sizes and morphologies of particles at low temperature [6-8].
From previous studies, the synthesis of ZnO with a variety of morphologies, such as nanowires, nanorods, nanoneedles, hollow structure were widely reported using analytical grade zinc nitrate, zinc acetate or zinc chloride as the source materials for zinc species [10-13].
All the diffraction peaks of samples can be indexed as the zincite-structure hexagonal ZnO (JCPDS No.36-1451), indicating that the obtained sample consisted of a single phase ZnO.
-T Whang, A novel low-temperature growth and characterization of single crystal ZnO nanorods, Material Chemistry and Physics, 82 (2003) 705-710
Online since: March 2020
Authors: Pitipat Sanphetchaloemchok, Kamal Rullah, Kok Wai Lam, Mohd Fadhlizil Fasihi Mohd Aluwi
The broad band at 3140 cm-1 in FTIR spectrum showed the confirmation of the presence of hydroxyl group in the structure.
The minimized structure of compounds 3 was then employed in the docking study.
All of the 2D structures of the compound were built with ChemDraw 2010 (Perkin Elmer, Inc., Waltham, MA, USA).
K. (2014) Inhibition of prostaglandin E2 production by synthetic minor prenylated chalcones and flavonoids: Synthesis, biological activity, crystal structure, and in silico evaluation, Bioorganic & Medicinal Chemistry Letters, 24 (16), 3826-3834
Journal of Medicinal Chemistry. 58(11), 4727-37.
Online since: February 2014
Authors: Miguel Angel Nuñez Velazquez, Fernando Juárez-López
It has been demonstrated that one-dimensional (1D) structures are a promising building block in high electron mobility transistors [5], solar cells [6], and biosensors [7].
The aim of this paper is to present Azidotrimethylsilane (ATMS) and Gallium Trichloride (GaCl3) as sources of Nitrogen and Gallium respectively to grown GaN nano-structures.
Journal of Physical Chemistry, vol. 114, (2010) 5016-5025
Canadian Journal of Chemistry, vol. 41, (1963) 1560-1567
[54] Attila Kova´cs Inorganic Chemistry, 41, 12 (2002) 3067-3075.
Online since: January 2016
Authors: Dheerawan Boonyawan, Vannajan Sanghiran Lee, Piriya Yavirach, Piyarat Nimmanpipug, Waleepan Sangprasert
Mechanical Properties Study of Plasma Treated Epoxy-base Post in Dual-Material Systems Waleepan Sangprasert1,2,a, Vannajan Sanghiran Lee2,3,4,b, Piriya Yavirach5,c, Dheerawan Boonyawan3,6,d and Piyarat Nimmanpipug2,3,e* 1Program of Chemistry, Faculty of Science and Technology, Chiang Rai Rajabhat University Chiang Rai, 57100, Thailand, 2Computational Simulation and Modeling Laboratory, Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand 3Thailand Center of Excellence in Physics, Bangkok 10400, Thailand 4Department of Chemistry, Faculty of Science, University of Malaya,Kuala Lumpur 50603, Malaysia 5Department of Prosthodontic, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand 6Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand aem_waleepan_r@crru.ac.th, bvannajan@gmail.com, cpiriya@chiangmai.ac.th, ddheerawan.b@cmu.ac.th, epiyarat.n@cmu.ac.th Keywords: plasma surface
These models were used to study the structures and properties of the single and dual-materials.
a PPJ with N2/Ar gases, b LPP with N2/Ar, cAPPJ with N2/He, d LPP with N2/He and NH3/He, e Ratio of N—O and O—O interactions by RDFs calculation of dual-materials equilibrium structures in 5 Å with internal of 0.2 Summary By analyzing MD trajectories of the systems, epoxy modified to N-containing group in a single materials system will give greater fracture strength, rigidity, and elasticity.
Xiao, Molecular dynamics study of the structure and performance of simple and double bases propellants, J.
Sideridou, V.Tserki, G.Papanastasiou, Effect of chemical structure on degree of conversion in light-cured dimethacrylate-based dental resins, Biomaterials 24 (2003) 655-665
Online since: December 2013
Authors: Ida Idayu Muhamad, Kok Fook Seng, Khairul Azly Zahan, Shahrulzaman Shaharuddin, Nozieana Khairuddin
Under screening electron microscope, the structure of SB has a flat and even surface; in contrast, PC has a structure of rough and overlapping surface which may promote the attachment or cell holding capacity during the immobilization process (Figure 1a, c).
Under screening electron microscope, PC demonstrated better structure for probiotic immobilization compared to SB.
Food Chemistry Vol. 80 (2003), p. 221-229
Journal of Agricultural and Food Chemistry Vol. 51 (2003), p. 654-658
Journal of Agricultural and Food Chemistry Vol. 55 (2007), p. 9829-9836
Online since: April 2010
Authors: Hai Bin Yuan, Wei Xin Yi
TbxGd2-xS3 also crystallizes in α phase, the crystal structure is same with rare earth sulfide α-Tb2S3.
Introduction It is well known that binary rare earth sesquisulfides exist in several crystal structures of α, β, γ, δ, and ε.
Binary rare earth sesquisulfides show interesting physical and chemical properties for their various crystal structure [1-7].
TbxGd2-xS3 crystallizes in α phase, the crystal structure is same with binary rare earth sulfide α-Tb2S3 and α-Gd2S3.
Flahaut: Handbook on the Physics and Chemistry of Rare Earths, Vol. 4, edtied by K.A.
Online since: June 2010
Authors: Naoki Takata, Yuichi Nakagawa, Nobuhiro Tsuji, Takumi Haruna, Daisuke Terada
Susceptibility to Hydrogen Embrittlement of IF Steel with Ultrafine-Grained Structure Produced by Accumulative Roll-Bonding Process T.
Tsuji2,e 1 Dept. of Chemistry and Materials Engineering, Kansai University, Suita, Osaka Japan 2 Dept. of Materials Science and Engineering, Kyoto University, Sakyo-ku, Kyoto Japan 3 Dept. of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Meguro, Tokyo Japan a haruna@kansai-u.ac.jp, bYuichi.Nakagawa@mitsui-chem.co.jp, cdaisuke.terada@ky7.ecs.kyoto-u.ac.jp, dntakata@mtl.titech.ac.jp, e nobuhiro.tsuji@ky5.ecs.kyoto-u.ac.jp Keywords: Hydrogen embrittlement, accumulative roll-bonding, ultrafine-grained structure, interstitial-free steel, thermal desorption gas spectroscopy Abstract.
Accumulative Roll-Bonding (ARB) developed by Tsuji, et al., is also one of the promising processes to produce bulk sheets with ultrafine-grain structure [8, 9].
Therefore, this paper aims at evaluating the susceptibility to hydrogen embrittlement of the IF steel with ultrafine-grained structure produced by the ARB process.
The as-received sheet in 1 mm thickness had equiaxed structure with a mean grain size of 27 μm.
Online since: April 2015
Authors: Yun Hua Li, Jun Fen Sun
The chemical structure of MWCNTs-NH2 was characterized by FT-IR, Raman spectroscopy, X-ray diffraction (XRD) test, TG analysis and elemental analysis.
Raman spectrum is very sensitive to the offset symmetry of carbonaceous material structure in reaction process.
So Raman spectroscopy was used to analysis the structure and morphology of MWCNTs-COOH and MWCNTs-NH2.
However that the positions of the two peaks do not change proof that MWCNTs-COOH layered hollow special structure does not change.
Moreover, amino groups introduced onto the surfaces of MWCNTs are available to be further functionalized by conventional chemistry routes.
Online since: February 2011
Authors: Jing Zhe Guo, Jiu Wei Sun, Fei Hu Zhang, Xu Jian Yang
The detailed design and development of the intelligent creel mechanical structure and control system is based on the research and analysis of specific operation and practical functions, which realizes its functions of intelligent analysis, right amount of supply and prompt storing.
Fig.4 Intelligent creel working principles Design of the Structure of the Intelligent Creel Fig.5 is the sample theoretical intelligent creel [3,4] based on the requirements of the practical function and specific operation tasks, which includes six functional modules: main frame, storing unit, locating and searching unit, main function unit, guiding unit and manipulator.
Fig.5 Sample intelligent creel The main frame is the basic carrier carrying the other five functional modules, jointed by channel steel and ensures the rigidity and stability of the whole structure.
Conclusions The traditional framed creel is a backward mode of production, while the intelligent creel is a new model whose basic structure and control system is designed and researched in detail based on practical function requirements and specific working task analysis.
Chemistry Industry Publishing House. 2004.02: 5~10 (In Chinese)
Online since: May 2023
Authors: Nurshahzleen Mohd Yusaini, Yushamdan Yusof, Mahayatun Dayana Johan Ooi, Ainorkhilah Mahmood, Noorezal Atfyinna Mohammed Napiah
Both PtPd synthesized with PVP and PEG exhibit nanoparticle structures, whereas PtPd synthesized in PVA demonstrates large, interconnected network structures.
The formation of a non-ordered porous structure (Fig 1a, 1b and 1d) mainly depends on the reduction rates.
Introducing PVP in the synthesis produced a finer ligament-pore structure than the capping agent’s absence.
Chemistry Select 3 (2018) 7184–94
Journal of Electroanalytical Chemistry, 572 (2004) 119–128, 2004.