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Online since: March 2007
Authors: Glenn E. Byczynski, Witold T. Kierkus, Jerry Sokolowski, Mile B. Djurdjevic
The Effect of Chemistry and Cooling Rate on the Latent Heat Released During
the Solidification of the 3XX Series of Aluminum Alloys
Mile B.
Thermal Analysis (TA) is a useful tool to help gauge the effect of chemistry, cooling rate on the resulting casting structure, melt treatment and related mechanical properties [1, 2].
Figure 4 summarizes the effect of hypoeutectic AlSiCu alloy chemistry and solidification rate on the measured latent heat.
The effect of hypoeutectic AlSiCu alloy chemistry expressed by the (SiEQ) and the solidification rate on the latent heat.
F., "Aluminum Alloys, Structure and Properties", Butterworth's, London, 1979, pp. 213/614
Thermal Analysis (TA) is a useful tool to help gauge the effect of chemistry, cooling rate on the resulting casting structure, melt treatment and related mechanical properties [1, 2].
Figure 4 summarizes the effect of hypoeutectic AlSiCu alloy chemistry and solidification rate on the measured latent heat.
The effect of hypoeutectic AlSiCu alloy chemistry expressed by the (SiEQ) and the solidification rate on the latent heat.
F., "Aluminum Alloys, Structure and Properties", Butterworth's, London, 1979, pp. 213/614
Online since: April 2014
Authors: Irene L. Artemieva, Natalya V. Ryabchenko
The paper proposes a mathematical ontology model of the nanomaterials domain with complicated structures and terms from ontologies of organic chemistry and physical chemistry.
The nanomaterials domain being closely connected with organic chemistry, colloid chemistry and physical chemistry, the model uses terms of the multilevel model of chemistry [8], the ontology model of organic chemistry [9] and physical chemistry [10].
Specialized shells of intelligent systems for domains with complicated structures. – Intern.
Carbon nanotubes: structure, properties, applications. – М.: BINOM Knowledge Laboratory, 2006. – 293 p.
Multilevel modular chemistry ontology: structure and management. - First Russia and Pacific Conf. on Computer Technology and App. 6 - 9 September, 2010. – P. 12-17
The nanomaterials domain being closely connected with organic chemistry, colloid chemistry and physical chemistry, the model uses terms of the multilevel model of chemistry [8], the ontology model of organic chemistry [9] and physical chemistry [10].
Specialized shells of intelligent systems for domains with complicated structures. – Intern.
Carbon nanotubes: structure, properties, applications. – М.: BINOM Knowledge Laboratory, 2006. – 293 p.
Multilevel modular chemistry ontology: structure and management. - First Russia and Pacific Conf. on Computer Technology and App. 6 - 9 September, 2010. – P. 12-17
Online since: December 2012
Authors: Hai Xing Liu, Xi Shi Tai, Hui Juan Yue, Guang Zeng, Jing Zhong Xiao, Hua Mei Guo
Study on novel structure of Mn-Di(3,4,6,7-tetramethyl-1,10-phenanthroline) dichloride: [Mn(C16H16N2)2]·Cl2
Hai Xing Liu1,a,Huan Mei Guo1,b,Jing Zhong Xiao2,c,Guang Zeng3,d,
Hui Juan Yue3,e Xi Shi Tai1,f
1College of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, P.R.
ZR2010BL025), State Key Laboratory of Inorganic Synthesis and Preparative Chemistry (Jilin University)(No. 2011-13), MOE Key Laboratory of Analytical Chemistry for Life Science (Nanjing University)(No.
Syntheses, crystal structures, and characterization of three metal-organic complexes with 2,2'-biphenyldicarboxylic acid and phenanthroline ligands, Journal of Coordination Chemistry, 2011, 64(2), 232-243 [2] Hai-Xing Liu, Gui-Ying Dong, Zhi-Hong Ma et al.
Program for the Solution of Crystal Structures.
Structure Determination Software Suite.
ZR2010BL025), State Key Laboratory of Inorganic Synthesis and Preparative Chemistry (Jilin University)(No. 2011-13), MOE Key Laboratory of Analytical Chemistry for Life Science (Nanjing University)(No.
Syntheses, crystal structures, and characterization of three metal-organic complexes with 2,2'-biphenyldicarboxylic acid and phenanthroline ligands, Journal of Coordination Chemistry, 2011, 64(2), 232-243 [2] Hai-Xing Liu, Gui-Ying Dong, Zhi-Hong Ma et al.
Program for the Solution of Crystal Structures.
Structure Determination Software Suite.
Online since: February 2022
Authors: Nina V. Nemchinova, Aleksandr Yu. Lazko
How the Chemistry of Raw Materials Affects Aluminum Produced
in Cells with Prebaked Anodes
Nina V.
This paper analyzes how major impurities found in raw materials affect the chemistry of primary aluminum.
The authors analyzed the chemistry of raw materials supplied for electrolysis.
Fly ash chemistry was analyzed by X-ray fluorescence on an S8 TIGER spectrometer (Bruker, Germany).
Rodionova, The shifts in the spatial structure of the world bauxite industry and Guinea’s position in the industry, Revista ESPACIOS. 41(21) (2020) 11-21
This paper analyzes how major impurities found in raw materials affect the chemistry of primary aluminum.
The authors analyzed the chemistry of raw materials supplied for electrolysis.
Fly ash chemistry was analyzed by X-ray fluorescence on an S8 TIGER spectrometer (Bruker, Germany).
Rodionova, The shifts in the spatial structure of the world bauxite industry and Guinea’s position in the industry, Revista ESPACIOS. 41(21) (2020) 11-21
Online since: September 2012
Authors: Jing Zhong Xiao, Xi Shi Tai, Fang Fang Jian, Hui Juan Yue, Hai Xing Liu, Jing Wang
Synthesis and Crystal Structure of Phosphorus Vandium Heteropolyacid Sodium
Haixing Liu1,a, Jingzhong Xiao 2,b, Jing Wang3,c, Fangfang Jian3,d,
Huijuan Yue4,e and Xishi Tai1,f
1College of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, China
2Department of Physics, University of Coimbra, Coimbra 3004-516, Portugal
3New Materials & Function Coordination Chemistry Laboratory, Qingdao University of Science
and Technology, Qingdao 266042, P.R.China
4State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, JilinUniversity, Changchun 130012, P.R.
Results and discussion The molecular structure of complex is shown in Fig.1.
A regular tetrahedron structure is formed of one P atom and four O1 atoms.
The crystal data and structure refinement is shown in Table 1.
The perfectle symmetrical cubic structure is formed of triangular structural unit.
Results and discussion The molecular structure of complex is shown in Fig.1.
A regular tetrahedron structure is formed of one P atom and four O1 atoms.
The crystal data and structure refinement is shown in Table 1.
The perfectle symmetrical cubic structure is formed of triangular structural unit.
Online since: October 2015
Authors: Md Hosnay Mobarok, Tapas K. Purkait, Jonathan G.C. Veinot
A nanoscale adventure with silicon: Synthesis, surface chemistry, and other Surprises
Md Hosnay Mobaroka,Tapas K.
In this context, alternative reactive platforms must be explored and their chemistry developed.
Veinot, Influence of HSiO1.5 sol-gel polymer structure and composition on the size and luminescent properties of silicon nanocrystals, Chem.
Buriak, Organometallic Chemistry on Silicon and Germanium Surfaces, Chemical Reviews, 102 (2002) 1271-1308
Hybertsen, Absorption and Emission of Light in Nano- scale Silicon Structures.
In this context, alternative reactive platforms must be explored and their chemistry developed.
Veinot, Influence of HSiO1.5 sol-gel polymer structure and composition on the size and luminescent properties of silicon nanocrystals, Chem.
Buriak, Organometallic Chemistry on Silicon and Germanium Surfaces, Chemical Reviews, 102 (2002) 1271-1308
Hybertsen, Absorption and Emission of Light in Nano- scale Silicon Structures.
Online since: June 2011
Authors: Di Wang, Shuang Ying Wei, Li Jiang Hu, Peng Zhu
Influence of Molecular Structure on the Optical Property of POSS: a DFT Calculation based Quantum Chemistry calculation
Di Wang1, 2, a, Peng Zhu2, Shuangying Wei1 and Lijiang Hu2, b
1Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
2 Chemistry Department, Harbin Institute of Technology, Harbin 150001, China
adiwang1030@126.com, bhulijiang2008@126.com
Keywords: POSS; polymorphic structure; quantum mechanics calculation; band gap; absorption coefficient (a).
The cells were optimized the configuration and calculated energy band structure and absorption coefficient (a) with Castep module of MS which is the quantum chemistry program based on density functional theory (DFT).
A DOS analysis can determine the changes in electronic structure caused by external pressure, for example.
At the same time the energy band structure and absorption coefficient (a) of cell were calculated with the CASTEP module.
The cells were optimized the configuration and calculated energy band structure and absorption coefficient with Castep module of MS which is the quantum chemistry program based on density functional theory.
The cells were optimized the configuration and calculated energy band structure and absorption coefficient (a) with Castep module of MS which is the quantum chemistry program based on density functional theory (DFT).
A DOS analysis can determine the changes in electronic structure caused by external pressure, for example.
At the same time the energy band structure and absorption coefficient (a) of cell were calculated with the CASTEP module.
The cells were optimized the configuration and calculated energy band structure and absorption coefficient with Castep module of MS which is the quantum chemistry program based on density functional theory.
Online since: July 2015
Authors: Kazuya Hatano, Daiki Ando, Kazuki Hirata, Akira Koshio, Fumio Kokai, Masataka Kubo, Nabihah Abdullah
Infrared (IR), thermogravimetry analysis (TGA) and transmission electron microscope (TEM) measurements confirmed the structure of polymer grafted GFs.
In this research, we functionalized GFs through nitrene chemistry via azido-terminated PCL and PIPOZ.
The structure of PCL and PIPOZ chains onto the GFs influences on physical and chemical properties of the resulting soluble functionalized GFs.
Fig. 1 Structure of (a)N3-PCL and (b) N3-PIPOZ.
Amiel,Click-Chemistry: An Alternative Way to Functionalize Poly(2-methyl-2-oxazoline), Macromol.
In this research, we functionalized GFs through nitrene chemistry via azido-terminated PCL and PIPOZ.
The structure of PCL and PIPOZ chains onto the GFs influences on physical and chemical properties of the resulting soluble functionalized GFs.
Fig. 1 Structure of (a)N3-PCL and (b) N3-PIPOZ.
Amiel,Click-Chemistry: An Alternative Way to Functionalize Poly(2-methyl-2-oxazoline), Macromol.
Online since: September 2016
Authors: Kurt Wostyn, Farid Sebaai, Steven Bilodeau, Ruben R. Lieten, Frank Holsteyns, Liesbeth Witters, Yoshida Yukifumi, Emanuel Cooper, Jens Rip
Two wet process approaches were evaluated: a boiling TMAH as a commodity chemistry is compared with a formulated chemistry using a multi-stack SiGe/Ge layer as a test vehicle.
The commodity chemistry used in this work is alkaline: boiling TMAH 25%.
The formulated chemistry evaluated in this work is semi-aqueous and designed by Entegris.
In Figure 2, the Si0.5Ge0.5/Ge multi-stack structures are immersed for 10 or 20 minutes in TMAH wt25 % solution.
Figure 4: (a) Arrhenius plot of the Si0.25Ge0.75 etching with the optimized semi-aqueous chemistry.
The commodity chemistry used in this work is alkaline: boiling TMAH 25%.
The formulated chemistry evaluated in this work is semi-aqueous and designed by Entegris.
In Figure 2, the Si0.5Ge0.5/Ge multi-stack structures are immersed for 10 or 20 minutes in TMAH wt25 % solution.
Figure 4: (a) Arrhenius plot of the Si0.25Ge0.75 etching with the optimized semi-aqueous chemistry.
Online since: July 2015
Authors: Hazlina Husin, Norrulhuda Mohd Taib, Zulkafli Hassan, Ku Halim Ku Hamid, Suriatie Mat Yusuf
With a wide range of molecular structures, adsorbed additive molecule generates different conformational molecular structure (CMS) combined with interaction of a range of forces occurring with the adsorbed additive molecules and between the adsorbed additive molecules; hence change the surface chemistry of particles in the dispersion.
With a wide range of molecular structures, adsorbed additives will generate different conformational molecular structure (CMS) combined with a range of interaction forces occurring within the adsorbed additive molecules and between molecules and thus change the surface chemistry of particles in the dispersion.
Molecular structure of a) EDTA, b) NTA and c) EDDS.
Leong, Particle bridging in dispersions by small charged molecules: Chain length and rigidity, architecture and functional groups spatial position, Physical Chemistry Chemical Physics, 9 (2007) 5608-5618
Fahey, Differences in the rheology and surface chemistry of kaolin clay slurries: The source of the variations, Chemical Engineering Science, 64 (2009) 3817-3825.
With a wide range of molecular structures, adsorbed additives will generate different conformational molecular structure (CMS) combined with a range of interaction forces occurring within the adsorbed additive molecules and between molecules and thus change the surface chemistry of particles in the dispersion.
Molecular structure of a) EDTA, b) NTA and c) EDDS.
Leong, Particle bridging in dispersions by small charged molecules: Chain length and rigidity, architecture and functional groups spatial position, Physical Chemistry Chemical Physics, 9 (2007) 5608-5618
Fahey, Differences in the rheology and surface chemistry of kaolin clay slurries: The source of the variations, Chemical Engineering Science, 64 (2009) 3817-3825.