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Online since: March 2013
Authors: Shao Qing Wang, Shang Yi Ma, Li Min Liu
To obtain the precise structure, the full structure optimization (including cell parameters and internal coordinates) was performed in all calculations until the forces on all atoms are less than 0.03 eV/Å.
The possible favorable local structures of Zn and Y were investigated based on their formation energies.
Fig. 2 Some more stable local structures of ZnmYn clusters in two stacking fault layers.
The constructed structures of Zn and Y, which looks like ZnmYn clusters, are displayed in Fig. 2.
Kawamura, et al., Local chemistry of a nanocrystalline high-strength Mg97Y2Zn1 alloy, Philos.
The possible favorable local structures of Zn and Y were investigated based on their formation energies.
Fig. 2 Some more stable local structures of ZnmYn clusters in two stacking fault layers.
The constructed structures of Zn and Y, which looks like ZnmYn clusters, are displayed in Fig. 2.
Kawamura, et al., Local chemistry of a nanocrystalline high-strength Mg97Y2Zn1 alloy, Philos.
Online since: April 2015
Authors: Hai Yan Lu
Hydrogen Isotopic Effects of Uranium Hydrides: First-Principles Calculations
Haiyan Lu
Science and Technology on Surface Physics and Chemistry Laboratory, P.O.
Results and Discussions Crystal structure.
Electronic Structure.
Rundle, The structure of uranium hydride and deuteride, J.
Switendick, Electronic energy band structure of UH3, J.
Results and Discussions Crystal structure.
Electronic Structure.
Rundle, The structure of uranium hydride and deuteride, J.
Switendick, Electronic energy band structure of UH3, J.
Online since: October 2010
Authors: Nathalie Poirot, Cécile Autret-Lambert, Raquel A. Souza
The d=0.09 compound is situated in the structure phase diagram region where phase separation is expected, which is intrinsic to the sample and should not be considered as impurities.
Although our x-ray diffraction data do not allow to distinguish two different phases, this double structure behaviors in both the geffB and the intensities, indicate the presence of two phases, each of them with different ordering temperatures.
The observed orders seem to be not independent with the oxygen type order and with the crystalline structure References [1] G.
Solid State Chemistry, 124(2), 199-204 (1996) [3] M.
Although our x-ray diffraction data do not allow to distinguish two different phases, this double structure behaviors in both the geffB and the intensities, indicate the presence of two phases, each of them with different ordering temperatures.
The observed orders seem to be not independent with the oxygen type order and with the crystalline structure References [1] G.
Solid State Chemistry, 124(2), 199-204 (1996) [3] M.
Online since: January 2006
Authors: Vivian W.Y. Tam, X.F. Gao, C.M. Tam
The
structure of ITZ is different from that of the bulk paste [15]: (i) there is less unhydrated cement; (ii)
there is a higher porosity, in which the pores are generally larger than those found in the bulk paste;
Normal mixing approach
Two-stage mixing approach
Improvement area (iii) there is less C-S-H; (iv) there are large, oriented crystals of calcium hydroxide; and (v) there is
generally a greater concentration of ettringite.
As most high-rise building structures in Hong Kong are made of reinforced concrete, the demolition of them will generate huge amount of concrete waste.
Zhongwei: Improvement of paste-aggregate interface by adding silica fume, Proceedings of the 8th International Congress on the Chemistry of Cement.
Popovics: Attempts to improve the bond between cement paste and aggregate, Materials and Structures 20(115), 1987, pp. 32-38
As most high-rise building structures in Hong Kong are made of reinforced concrete, the demolition of them will generate huge amount of concrete waste.
Zhongwei: Improvement of paste-aggregate interface by adding silica fume, Proceedings of the 8th International Congress on the Chemistry of Cement.
Popovics: Attempts to improve the bond between cement paste and aggregate, Materials and Structures 20(115), 1987, pp. 32-38
Effect Evaluation on CFG Pile Consolided Foundation of the Red Clay Being Polluted by Organic Matter
Online since: May 2011
Authors: Chun Mei Mu, Bao Chen Liu, Zhi Kui Liu
The addition of stone debris and fly ash play two aspects of the roles. first, physical role, gravel and stone and mixing cement and fly ash form the body of the contaminated compacted red clay, red clay of the network resulting in state changes; second, chemical reaction, fly ash and soft plastic like polluted with red clay mixed cement chemical reaction occurs, the formation of hardened structures, undermining the role of organic matter particles are adsorbed, leaving powder ash, cement and pollution of red clay particles to form a complete structure - a complete envelope pile.
From the above two aspects, stone debris is the largest contribution to the strength of from the cement, form a skeleton structure of the body by fly ash and soft soil and envelope together with the coerced, and gravel debris cemented.
Beijing: China Railway Publishing House,1991 [9] Kyoichi Kumada.Chemistry of soil organic matter[M].
From the above two aspects, stone debris is the largest contribution to the strength of from the cement, form a skeleton structure of the body by fly ash and soft soil and envelope together with the coerced, and gravel debris cemented.
Beijing: China Railway Publishing House,1991 [9] Kyoichi Kumada.Chemistry of soil organic matter[M].
Online since: October 2013
Authors: Su Yang, Shun Bo Zhao, Mei Jun Lu, Xue Zhen Feng
The heat transfer coefficient, as the most important parameters for evaluation of the thermal performance, relates to the thermal conductivity of the material constituting the envelope structure.
In reinforced concrete structures, steel bars and concrete work together not only bearing loads but also acting as building envelope.
In previous studies of the thermal insulation properties of RCCW, it was found that the steel bars and linkages in the concrete may affect the thermal conductivity of concrete, thereby affect the thermal performance of the whole structure [1-3].
[9] Hamilton R.L. and Crosser O.K.: Industrial and Engineering Chemistry Fundamentals Vols.1 (1962), p187-191
In reinforced concrete structures, steel bars and concrete work together not only bearing loads but also acting as building envelope.
In previous studies of the thermal insulation properties of RCCW, it was found that the steel bars and linkages in the concrete may affect the thermal conductivity of concrete, thereby affect the thermal performance of the whole structure [1-3].
[9] Hamilton R.L. and Crosser O.K.: Industrial and Engineering Chemistry Fundamentals Vols.1 (1962), p187-191
Online since: October 2013
Authors: Hua Deng, Xiao Gang Duan, Gao Ke Zhu
The basic mechanical structure of the prosthetic hand includes a precious metal-commutation DC micro motor, a gear train and a four-link system.
Fig. 4 The adaptive fuzzy PID force control for the prosthetic hand Fig. 5 Structure of the fuzzy logic controller Because the output signal of adaptive fuzzy PID force control is finally exported by PID controller, the control law is similar to Eq.5 as follows:
Fig. 8 Structure of the experimental platform Experimentation.
Deng: submitted to Journal of Industrial & Engineering Chemistry Research (2008)
Fig. 4 The adaptive fuzzy PID force control for the prosthetic hand Fig. 5 Structure of the fuzzy logic controller Because the output signal of adaptive fuzzy PID force control is finally exported by PID controller, the control law is similar to Eq.5 as follows:
Fig. 8 Structure of the experimental platform Experimentation.
Deng: submitted to Journal of Industrial & Engineering Chemistry Research (2008)
Online since: April 2020
Authors: Phan Thi Thanh Nga, Masaya Tone, Hayato Inoue, Kazutaka Shibatomi, Seiji Iwasa
Highly Efficient Synthesis of Oxindole Derivatives via Catalytic Intramolecular C-H Insertion Reactions of Diazoamides
Nga Phan-Thi-Thanha, Masaya Toneb, Hayato Inouec, Kazutaka Shibatomid and Seiji Iwasae*
Department of Applied Chemistry and Life Science, Toyohashi University of Technology 1-1 Tempaku-cho, Toyohashi, Aichi, 441-8580, Japan
ap169403@edu.tut.ac.jp, bm131837@edu.tut.ac.jp, ch99991t@gmail.com, dshiba@ens.tut.ac.jp, eiwasa@chem.tut.ac.jp
Keywords: Ruthenium, α-Diazoamide, carbene, C-H insertion reaction, oxinole
Abstract.
Introduction Oxindole derivatives are well-known bicyclic structure in the areas of pharmacology and agriculture, which have characteristic biological activities [1, 2].
Moreover, the transition metal-catalyzed intramolecular carbenoid C-H insertion reactions of α-diazocarbonyl compounds have been reported [10, 11] and several transition metal-mediated decomposition of diazo acetamide also provides oxindole derivatives which is part of structures of many natural and non-natural bioactive compounds [12].
Nagata, Structure-activity relationships of the oxindole growth hormone secretagogues, Bioorg.
Introduction Oxindole derivatives are well-known bicyclic structure in the areas of pharmacology and agriculture, which have characteristic biological activities [1, 2].
Moreover, the transition metal-catalyzed intramolecular carbenoid C-H insertion reactions of α-diazocarbonyl compounds have been reported [10, 11] and several transition metal-mediated decomposition of diazo acetamide also provides oxindole derivatives which is part of structures of many natural and non-natural bioactive compounds [12].
Nagata, Structure-activity relationships of the oxindole growth hormone secretagogues, Bioorg.
Online since: September 2012
Authors: Yi Cong Zeng, Hai Liang Xu, Wan Rong Wu, Bo Wu
The double-channel lift pump is so non-clogging and efficient, whose impeller structures are very special, that it is suitable for transporting the hydrates.
In view of the seabed surroundings and other system requirements, the special lift pump for deep sea mining also has the main characteristics that it has high power-volume ratio and power-weight ratio, coarse particles and elongated strands can be transported and it has simple structure, high reliability and outstanding corrosion resistance.
Because the impeller structure of the double-channel lift pump is very special, which it has two symmetric tortuous stream tubes from the entrance of the impeller to the exit of the impeller, it has so high non-clogging performance and symmetric tortuous stream tubes that it is suitable for transporting the hydrates.
[5] Ricaurte and Marvin:Industrial and Engineering Chemistry Research, Vol. 51(2012) No.7, p. 3157
In view of the seabed surroundings and other system requirements, the special lift pump for deep sea mining also has the main characteristics that it has high power-volume ratio and power-weight ratio, coarse particles and elongated strands can be transported and it has simple structure, high reliability and outstanding corrosion resistance.
Because the impeller structure of the double-channel lift pump is very special, which it has two symmetric tortuous stream tubes from the entrance of the impeller to the exit of the impeller, it has so high non-clogging performance and symmetric tortuous stream tubes that it is suitable for transporting the hydrates.
[5] Ricaurte and Marvin:Industrial and Engineering Chemistry Research, Vol. 51(2012) No.7, p. 3157
Online since: January 2003
Authors: György Kaptay
Interfacial Criteria to Produce Metal Matrix Composites
and Ceramic Particle Stabilized Metallic Foams
George Kaptay
University of Miskolc, Department of Physical Chemistry, LIMOS R&D Group
Hungary 3515, Miskolc, Egyetemvaros
Keywords: metal matrix composites, metallic foams, ceramic particles, interfacial energy, contact
angle, interfacial criteria
Abstract.
As a simplest possible case, the closely packed, equal sphere model (the CPES model) can be used, when penetration of the liquid metal is performed perpendicular to the (111) plane of this fcc-like structure.
In other words, liquid metals will spontaneously infiltrate into the closely packed structure of mono-sized spherical particles, if � < �cr = 50.7 o .
[32] G.Kaptay, T.Matsushita, K.Mukai: to be published in ISIJ International [33] I.Jin, L.D.Kenny, H.Sang, US Patents No.4,973,358 (1990) and No. 5,112,697 (1992) [34] J.Banhart, JOM, Vol. 52, (2000), p.22 [35] G.Kaptay: in: Metal Foams and Porous Metal Structures, ed. by J.Banhart, M.F.Ashby, N.A.Fleck (MIT Verlag, Bremen, 1999), p. 141
As a simplest possible case, the closely packed, equal sphere model (the CPES model) can be used, when penetration of the liquid metal is performed perpendicular to the (111) plane of this fcc-like structure.
In other words, liquid metals will spontaneously infiltrate into the closely packed structure of mono-sized spherical particles, if � < �cr = 50.7 o .
[32] G.Kaptay, T.Matsushita, K.Mukai: to be published in ISIJ International [33] I.Jin, L.D.Kenny, H.Sang, US Patents No.4,973,358 (1990) and No. 5,112,697 (1992) [34] J.Banhart, JOM, Vol. 52, (2000), p.22 [35] G.Kaptay: in: Metal Foams and Porous Metal Structures, ed. by J.Banhart, M.F.Ashby, N.A.Fleck (MIT Verlag, Bremen, 1999), p. 141