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Online since: December 2012
Authors: Kai Yang Li, Yu Wen Zhu, Yong Zhou, Hong Jun Mo, Ming Ming Gao, Ji Zhen Liu
A model method based on least square support vector machine (LS-SVM) which directly uses the experimental data is presented to overcome the weakness of mechanism model, and the system structure and algorithm are given.
The internal structure of LS-SVM model is shown in Fig.1.The main idea of the Non-linear regression of LS-SVM is using a nonlinear transformation to map the m dimensions input samples to the higher dimentional feature space F(Hilbert space) from originally space and construct optimal linear regression function.
Structure diagram of LS-SVM model.
Vol. 18 (2005), p. 74 [3] K .Zhang: Journal of Fuel Chemistry and Technology.
Online since: January 2014
Authors: Jie Li Liu, Ai Mei Yang, Lin Yang, Xiao Long Shi, Yun Men
The structures of these compounds were elucidated as: β-sitosterol (1), daucosterol (2), chrysophanol (3), (-)-epiafzelechin (4), 5,2′-dihydroxy-7,8,6′-trimethoxyflavanone (5) by NMR datas, the antibacterial activity of all compounds were examined on five species of bacteria Escherichia coli, Staphylococcus aureus, Bacillus licheniformis, Pseudomonas aeruginosa and Streptococcus pneumoniae.
Every compound obtained was subjected to detail spectroscopic analys to establish their chemical structures.
The structures of these known compounds were identified by direct comparison of their spectral data (1H NMRand 13C NMR and DEPT) with those reported values in the literatures.
Yuldashev: Chemistry of Natural compounds.
Online since: June 2013
Authors: Jun Li, Hui Min Huang, Xun Tao
The morphology, structure, electrochemical performance and the tap density of the materials were characterized by scanning electron microscope(SEM), x-ray diffraction(XRD), cyclic voltammetry(CV), constant current charge-discharge experiment and the tap density measurement.
The apparent morphology, crystal structure, electrochemical performance and the tap density of the materials prepared under different conditions were characterized by scanning electron microscope(SEM), X-ray diffraction(XRD), cyclic voltammetry(CV), constant current charge-discharge experiment and the tap density measurement.
The strong and narrow diffraction peaks indicated the high crystallinity of the sample A, which can be well indexed to pure LiFePO4 with an orthorhombic single-phase structure (JCPDS card No.83-2092) without any observable impurity phase.
Through the SEM, XRD and other methods testing the microstructure of the sample, finding that lithium iron phosphate material synthesized by this method has complete olive-type structure.
Vol. 27(2012), p.838 [5] Q.M.Zhang, Y.Q.Qiao and M.S.Zhao: Chinese Journal of Inorganic Chemistry.
Online since: November 2016
Authors: A.D. Dobrzańska-Danikiewicz, D. Cichocki, D. Łukowiec
The characterization of the produced material including the examination of the structure, morphology, chemical composition and evaluation of the size and distribution of rhodium and/or palladium nanoparticles on the surface of carbon nanotubes has been performed using: scanning electron microscopy (SEM), scanning transmission electron microscopy (STEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS).
The article depicts and compares the fabrication methods of MWCNTs-Rh and MWCNTs-Pd nanocomposites by the chemical reduction method and describes the fabricated materials by examining their structure and morphology and the arrangement and size of rhodium and palladium nanoparticles on the surface of carbon nanotubes.
The following examination techniques were employed to characterise the structure of the nanotubes and nanocomposites obtained: Scanning Electron Microscopy (SEM), Scanning Transmission Electron Microscopy (STEM), Transmission Electron Microscopy (TEM), and Energy Dispersion Spectrometer (EDS).
It was found based on a comparative analysis of the structure of MWCNTs-Rh and MWCNTs-Pd nanocomposites, that the materials have a similar morphology.
Prato, Decorating carbon nanotubes with metal or semiconductor nanoparticles, Journal of Materials Chemistry 17 (2007) 2679-2694
Online since: January 2012
Authors: Xiang Yang Guo, Shou De Wang, Ling Chao Lu
The composition, structure and performance of the clinker were analyzed by the means of X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy and metallographic microscope.
A 4XZ- metallographic microscope was used to identify lithofacies structure of the clinkers.
Synthesis, Structure and Morphology of Barium-Bearing Calcium Aluminosulphate Crystal.
Cement Chemistry.
Research on Structure and Performance of Ba-Bearing Sulphoaluminate Cement and Product.
Online since: February 2014
Authors: Novizal Novizal, Azwar Manaf, P. Sardjono
In this paper, we report our investigation on material structure analysis of (Ba0.7Sr0.3Fe12O19)1-x-(Ba0.7Sr0.3TiO3)x with x = 0.2, x = 0.5 and x = 0.8 composite system prepared by a mechanical alloying process to promote feroic properties.
As the properties are a structure sensitive, materials structure must be properly designed to meet a specific application.
We present results of investigation on synthesis and material structure analysis of (Ba(0.7)Sr(0.3)Fe12O19)1-x-(Ba(0.7)Sr(0.3)TiO3)x with x = 0.2, x = 0.5 and x = 0.8 composite system prepared by a mechanical alloying process. 2.
Thus, the mechanically alloyed for the two constituted materials of composite has different particles shape which was affected by heavy deformation and depend on the crystal structure.
Silmόes, Z., Alexandre, Cavalcante, Santo, Laccio, Ricardi, Santos, Carla, Varela, A., Josė, Longo, Elson, “Feroelectric and Dielectric Behaviour of Bi0.92La0.08FeO3 Multiferroic Thin Films Prepared by Soft Chemistry Route”, J.
Online since: December 2011
Authors: Hong Wen Ma, Shuang Qing Su
The structure of zeolite A was simple, hence the formation of nucleus and the growth of crystal could be completed successively in higher temperature [24].
Barrer: Hydrothermal Chemistry of Zeolites (Academic, London, 1978)
[6] Ruren Xu and Wenqin Pang, Chemistry zeolites and porous materials (Science Press, Beijing, 2005) (In Chinese)
Online since: September 2012
Authors: Margarita Guenther, Gerald Gerlach, Thomas Wallmersperger, Mahender Nath Avula, Seung Hei Cho, X. Xie, B.V. Devener, Florian Solzbacher, Prashant Tathireddy, Jules J. Magda, Carmen Scholz, Rodolphe Obeid, Tracy Armstrong
Armstrong3 1Technische Universität Dresden, 01062 Dresden, Germany 2University of Utah, Salt Lake City, UT 84112, USA 3University of Alabama in Huntsville, Huntsville, AL 35899, USA a mguenthe@mail.zih.tu-dresden.de, b florian.solzbacher@utah.edu, c cscholz@chemistry.uah.edu * Corresponding author: mguenthe@mail.zih.tu-dresden.de; http://ife.et.tu-dresden.de/ Keywords: piezoresistive microsensor array; biochemical sensor; polyelectrolyte hydrogel; glucose-sensitive, pH-sensitive, swelling behaviour, biomedical applications Abstract.
The ability to deliver an optimal therapeutic dose in response to distinct changes in the body chemistry of each person offers a unique opportunity to deliver personalized medical care and will dramatically change the treatment of other diseases through tailored administration of drugs.
Transducers involving mechanical [1,2,8-11], electrochemical (e.g., capacitive [3], conductometric, amperometric, potentiometric) and optical [12] mechanisms are used to monitor changes in hydrogel volume and structure.
Online since: February 2013
Authors: Jia Man Sun, Jun Fan Fu, Ru Jun Zhou, Xue Rui Yan
Discussion Phenolic acids found naturally in plants, have been isolated and identified mainly as organic acids containing phenol structure [36,37].
Randall: The Journal of biological chemistry, vol. 193 (1951), p. 265 [36] S.
Shen: Journal of Agricultural and Food Chemistry, vol. 56 (2008), p. 1316 [42] H.S.
Online since: September 2018
Authors: MUHAMMAD Shahid Ansari, Riaz Ahmad, Tayyaba Asim
Nickel Coated Carbon Nanomaterial for the Removal of Heavy and Toxic Metals (Cd, Cu) from Water and Wastewater TAYYABA Asim1,a*, RIAZ Ahmed1,b and MUHAMMAD Shahid Ansari1,c 1Department of Chemistry, Quaid-i-Azam University Islamabad, Pakistan 2Quetta Institute of Medical Sciences, Quetta, Pakistan *atayyabasim2008@gmail.com, briaz_ecfc@yahoo.com, cansari.shahid.m@gmail.com Keywords: Nickel Coated Carbon, Waste Water, Heavy Metals, Adsorption Energy.
Reichenberg, Properties of ion-exchange resins in relation to their structure.
Hatfield, Colloid and Capillary Chemistry.