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Online since: October 2002
Authors: César A.C. Sequeira, R.P.C. Neto, Yun Chen, Qi Dong Wang
The alkaline fuel cell anode was produced as a dual-layer structure with foamed nickel as current collector, as it was
described in our previous work [7].
At the same time, with the enhancement of the rate of the hydrogen absorption-desorption process, the structure of the anode can be maintained for longer time.
Alloys and Compounds 293-295 (1999) pp. 833 [8] Handbook of Chemistry and Physics, CRC Press, Boca Raton, FL, 64th edn. (1983-1984) [9] W.
At the same time, with the enhancement of the rate of the hydrogen absorption-desorption process, the structure of the anode can be maintained for longer time.
Alloys and Compounds 293-295 (1999) pp. 833 [8] Handbook of Chemistry and Physics, CRC Press, Boca Raton, FL, 64th edn. (1983-1984) [9] W.
Online since: October 2014
Authors: Jun Zhou, Qiu Li Zhang, Xin Zhe Lan, Xi Cheng Zhao, Zhe Yang
When the temperature rose to a certain extent, the bridge bonds in coal structure broke into free radicals, aliphatic side chain and functional groups containing oxygen cracked into low molecular compounds with corresponding chemical bond fracturing, this is so-called the initial pyrolysis.
The tar was mainly composed of benzene, hydrocarbons and aromatic hydrocarbons due to coal’s structure consisting of polymer aromatic polymers, saturated alkenes branched chain and unsaturated olefin branched chain.
:Journal of Fuel Chemistry and Technology Vol.33, No.4 (2005)
The tar was mainly composed of benzene, hydrocarbons and aromatic hydrocarbons due to coal’s structure consisting of polymer aromatic polymers, saturated alkenes branched chain and unsaturated olefin branched chain.
:Journal of Fuel Chemistry and Technology Vol.33, No.4 (2005)
Online since: June 2014
Authors: Karim bin Deraman, Wan Nurulhuda Wan Shamsuri, Jackie Chen Keng Yik, Ong Wai Kit
It was clearly seen that the DLC films which deposited with 4.0 x 10-1 Torr deposition pressure at 500 oC by varying precursor gases from 0.2 l/min, 0.4 l/min, and 0.6 l/min to 0.8 l/min were in amorphous structure.
XRD patterns of the DLC films exhibit that no obvious sharp peak of spectra and hence the amorphous structure of films can be identified.
Zat’ko, Plasma Enhanced Chemical Vapor Deposition Of Deuterated Diamond Like Carbon Films For Photocathode Application, International Symposium on Plasma Chemistry, 2013
XRD patterns of the DLC films exhibit that no obvious sharp peak of spectra and hence the amorphous structure of films can be identified.
Zat’ko, Plasma Enhanced Chemical Vapor Deposition Of Deuterated Diamond Like Carbon Films For Photocathode Application, International Symposium on Plasma Chemistry, 2013
Online since: October 2010
Authors: Thierry Belmonte, M. Mafra, E.A. Bernardelli, T. Souza, A.M. Maliska
Mafra3e
1Federal University of Santa Catarina, Brazil, SC, Florianópolis
2Institut Jean Lamour, Department of Physics and Chemistry of Solids and Surfaces, Nancy-Université, CNRS, Parc de Saurupt, CS 14234, F-54042 Nancy Cedex, France
3Federal Technological University of Paraná, Brazil, PR, Curitiba
aeuclides_ab@yahoo.com.br, bthiago.kairos@hotmail.com, camaliska@emc.ufsc.br, dthierry.belmonte@emines.inpl-nancy.fr, emafra@utfpr.edu.br
Keywords: stearic acid; plasma; etching; grafting.
The objective of this work is to investigate the role of the main process parameters (gas flow rate, sample temperature, output power and processing time) on the treatment of the stearic acid (SA) which is another model component with simple structure and functional groups.
Stearic Acid (CH3(CH2)16COOH) with linear structure is used as study material.
The objective of this work is to investigate the role of the main process parameters (gas flow rate, sample temperature, output power and processing time) on the treatment of the stearic acid (SA) which is another model component with simple structure and functional groups.
Stearic Acid (CH3(CH2)16COOH) with linear structure is used as study material.
Online since: April 2014
Authors: Ekarat Meechoowas, Kanit Tapasa, Tepiwan Jitwatcharakomol, Usuma Naknikham
In the glass structure, alkaline ions are easy to move because they do not bond with Si atoms.
Because the treating processes were applied only on a thin layer and washed free Na from the glass surface and did not change the glass structure.
Shelby, Introduction to glass science and technology, second ed., The Royal Society of Chemistry, UK, (2005).
Because the treating processes were applied only on a thin layer and washed free Na from the glass surface and did not change the glass structure.
Shelby, Introduction to glass science and technology, second ed., The Royal Society of Chemistry, UK, (2005).
Online since: December 2012
Authors: Jun Fu Wei, Kong Yin Zhao, Liang Yang, Zi An Luo
It was found that a heterogeneous grafting layer structure was formed on the surface of PVDF-g-AA.
Water contact angle and pure water flux of PVDF-g-AA membranes with different grafting degree Water contact angle and pure water flux of PVDF-g-AA membrane Besides the significant changes in surface chemistry and morphological structure, the hydrophilicity of the PVDF membranes was also influenced by the grafting of AA, and the hydropilicity of porous membrane can be reliably determined by the water contact angle.
Water contact angle and pure water flux of PVDF-g-AA membranes with different grafting degree Water contact angle and pure water flux of PVDF-g-AA membrane Besides the significant changes in surface chemistry and morphological structure, the hydrophilicity of the PVDF membranes was also influenced by the grafting of AA, and the hydropilicity of porous membrane can be reliably determined by the water contact angle.
Online since: November 2013
Authors: Xue Han, Jian Chen
Preface
The melting of glass is a complex physical-chemistry reaction, which is full of not only delays and inertia, but also is nonlinear.
Table 1 Fuzzy control rules e/Δe NL NM NS N0 PS PM PL NL PM PM PM PS ZO NS NS NS PL PL PM PS ZO NS NS ZO PM PL PS ZO NS NM NM PS PM PM PS ZO NS NM NL PL PL PS ZO NS NM NL NL The module structure and algorithm play the key role in the system.
Structure optimization pf fuzzy neural network by genetic algorithm [J].
Table 1 Fuzzy control rules e/Δe NL NM NS N0 PS PM PL NL PM PM PM PS ZO NS NS NS PL PL PM PS ZO NS NS ZO PM PL PS ZO NS NM NM PS PM PM PS ZO NS NM NL PL PL PS ZO NS NM NL NL The module structure and algorithm play the key role in the system.
Structure optimization pf fuzzy neural network by genetic algorithm [J].
Online since: August 2015
Authors: D.J.D.H. Djoko, Lalu A. Didik, Masruroh Masruroh, S.P. Sakti, Eka Rachmawati, Masdiana Padaga, Fadli Robiandi
The molecular structure of ZnPc is shown in Fig. 1.
Fig. 1 Chemical structure of ZnPC used as a coating layer in this study Fig. 2 Sensor test cells Results and Discussion The influence of the solvent-dependent polystyrene (PS) surface morphology on the morphology of the ZnPc layer is shown in Fig. 3.
Gould, DC conduction processes and electrical parameters of the organic semiconducting Zinc Phthalocyanine, ZnPc, thin films Journal of Physics and Chemistry of Solids 64 (2003) 1297.
Fig. 1 Chemical structure of ZnPC used as a coating layer in this study Fig. 2 Sensor test cells Results and Discussion The influence of the solvent-dependent polystyrene (PS) surface morphology on the morphology of the ZnPc layer is shown in Fig. 3.
Gould, DC conduction processes and electrical parameters of the organic semiconducting Zinc Phthalocyanine, ZnPc, thin films Journal of Physics and Chemistry of Solids 64 (2003) 1297.
Online since: September 2014
Authors: Meiry Glaúcia Freire Rodrigues, Marcílio Máximo da Silva, Aline Cadigena Lima Patrício, Mariaugusta Ferreira Mota
This effect is partially explained by the chemical structure of gasoline, which is a liquid fuel obtained by refining oil, consisting essentially of a mixture of light hydrocarbons [9].
By analyzing the results obtained in this study, particularly those provided by infrared spectroscopy, it was concluded that the treated, organoclay (modified with Praepagen) comprised CH2 and CH3 groups in its structure, which provides evidence of the efficiency of the organophilization process.
Domka, J. of Physical and Chemistry Solids.
By analyzing the results obtained in this study, particularly those provided by infrared spectroscopy, it was concluded that the treated, organoclay (modified with Praepagen) comprised CH2 and CH3 groups in its structure, which provides evidence of the efficiency of the organophilization process.
Domka, J. of Physical and Chemistry Solids.
Online since: December 2010
Authors: Martina Iskrová, Ondrej Šauša, Jozef Krištiak, Barbora Sláviková, Viktor Majerník
Positron Annihilation in Undercooled Water and Ice
Ondrej Šauša1, a, Martina Iskrová1,b, Barbora Sláviková1,2,c, Viktor Majerník1,d and Jozef Krištiak1,e
1Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovakia
2Comenius University in Bratislava, Faculty of Natural Sciences, Department of Inorganic Chemistry,
Mlynská dolina, 842 15 Bratislava, Slovakia
aondrej.sausa@savba.sk, bmartina.iskrova@savba.sk, cbarbora.slavikova@savba.sk, dviktor.majernik@savba.sk, ejozef.kristiak@savba.sk
Keywords: Positron annihilation, positronium, water, lifetime.
This evokes the interest to investigation of water states and structure.
Because the structure of ice depends on thermal history of samples and is not simple (polymorphism, proton - ordered and –disordered ice modifications, transformations between ice modifications etc.), this fact provides large space for research.
This evokes the interest to investigation of water states and structure.
Because the structure of ice depends on thermal history of samples and is not simple (polymorphism, proton - ordered and –disordered ice modifications, transformations between ice modifications etc.), this fact provides large space for research.