Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: March 2010
Authors: Xuan Liu, Ping Feng
Blue atoms have local
crystal structures with the value of LOP bigger than 0.03, while the other red atoms belong to liquid
phase.
In-plane structures and number density of lattice.
In addition to LOP, in-plane structures also can distinct between the original crystalline structure and the liquid phase.
There are only red atoms with lower number density in Fig. 4c) and 4d), which have lost their regular structures completely.
Hasebe: Materials Chemistry and Physics Vol. 54 (1998), p. 201 [3] X.
In-plane structures and number density of lattice.
In addition to LOP, in-plane structures also can distinct between the original crystalline structure and the liquid phase.
There are only red atoms with lower number density in Fig. 4c) and 4d), which have lost their regular structures completely.
Hasebe: Materials Chemistry and Physics Vol. 54 (1998), p. 201 [3] X.
Online since: January 2010
Authors: Rumen Kirilov, P. Stefchev, Z. Alexieva, H. Dikov
., Sofia 1784, Bulgaria
2
Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad.
The structure of the coatings was examined using Scanning Electron Microscopy (SEM) micrographs.
The coating has a dendrite structure, the dendrites growing from the substrate to the outer surface.
Selective absorbing bimetallic structures have been obtained by Sn and Ni cathode deposition.
SEM micrographs indicate their dendrite structure consisting of crystalline phases: Ni3Sn2 Ni3Sn and Sn.
The structure of the coatings was examined using Scanning Electron Microscopy (SEM) micrographs.
The coating has a dendrite structure, the dendrites growing from the substrate to the outer surface.
Selective absorbing bimetallic structures have been obtained by Sn and Ni cathode deposition.
SEM micrographs indicate their dendrite structure consisting of crystalline phases: Ni3Sn2 Ni3Sn and Sn.
Online since: September 2017
Authors: Adam Skrobak, Martin Bednarik, Vaclav Janostik
Zyball, Radiation crosslinking of polymers-status, current issues, trends and challenges, Radiation Physics and Chemistry 46 (1995) 931-936
Mizera et al., Recycling of irradiated high-density polyethylene, Radiation Physics and Chemistry 106 (2015) 68-72
Khonakdar et al., Effect of electron-irradiation on cross-link density and crystalline structure of low- and high-density polyethylene, Radiation Physics and Chemistry 75 (2006) 78-86
Mizera et al., Recycling of irradiated high-density polyethylene, Radiation Physics and Chemistry 106 (2015) 68-72
Khonakdar et al., Effect of electron-irradiation on cross-link density and crystalline structure of low- and high-density polyethylene, Radiation Physics and Chemistry 75 (2006) 78-86
Online since: September 2016
Authors: Kevin Paine, Atef Badr, Socrates Ioannou, Kaloyana Kostova, Tim Ibell
There is a considerable body of research on the chemistry, microstructure and hydration of SSC, some included in reviews [2].
The dissolution of GGBS involves disintegration of the silicate-aluminate structure [4].
Even though the chemistry and microstructure of the system has been studied to a large extent, there is, however, limited data available on the long term durability of SSC concrete; which restricts a thorough assessment of their applicability for a commercial re-use in the construction, and leaving sustainability-seeking technologists somewhat unconfident about their potential.
Lea’s Chemistry of Cement and Concrete, 4th Ed., London: Butterworth-Heinemann pp. 637-673
The dissolution of GGBS involves disintegration of the silicate-aluminate structure [4].
Even though the chemistry and microstructure of the system has been studied to a large extent, there is, however, limited data available on the long term durability of SSC concrete; which restricts a thorough assessment of their applicability for a commercial re-use in the construction, and leaving sustainability-seeking technologists somewhat unconfident about their potential.
Lea’s Chemistry of Cement and Concrete, 4th Ed., London: Butterworth-Heinemann pp. 637-673
Online since: November 2005
Authors: S. Hansen, D.Q. Bai, F. Hamad, J. Asante
Experiment Design
Steel Chemistry.
The steel used in this study is a low carbon Nb-Ti microalloyed grade, of the chemistry shown in Table 1.
Steel Chemistry [wt%] C Mn P S Si Cu Nb Other Alloying Elements 0.054 1.60 0.015 0.005 0.28 0.41 0.09 Ni, Cr, Mo, Ti Heat Treatment.
This tensile strength drop indicates a substantial annealing of the dislocation structure at the tempering temperature.
The steel used in this study is a low carbon Nb-Ti microalloyed grade, of the chemistry shown in Table 1.
Steel Chemistry [wt%] C Mn P S Si Cu Nb Other Alloying Elements 0.054 1.60 0.015 0.005 0.28 0.41 0.09 Ni, Cr, Mo, Ti Heat Treatment.
This tensile strength drop indicates a substantial annealing of the dislocation structure at the tempering temperature.
Online since: October 2014
Authors: Radu Dan Rugescu, Florin Radu Bacaran, Stefan Catalin Predoiu
A small quantity of potassium dioxide KO2 is forming, a yellowish substance with a highly unusual structure that decomposes at 400ºC while melting.
A proprietary numerical code TERMADDA was developed for the chemistry of equilibrium combustion with condensed phases and with good applicability into computer simulations.
[15] Allen, Andrew, Michael Anderson, and Bruce Mattson, The remarkable chemistry of potassium dioxide-KO2, JCE 2008-0703, http://mattson.creighton.edu/KO2/KO2.pdf, Creighton University, Omaha, Nebraska, 2008
A.; Bochmann, M., Advanced Inorganic Chemistry, 6th Edition, ISBN 978-0-471-19957-1, John Wiley & Sons, Inc., 1376 pages, page 98, 1999
A proprietary numerical code TERMADDA was developed for the chemistry of equilibrium combustion with condensed phases and with good applicability into computer simulations.
[15] Allen, Andrew, Michael Anderson, and Bruce Mattson, The remarkable chemistry of potassium dioxide-KO2, JCE 2008-0703, http://mattson.creighton.edu/KO2/KO2.pdf, Creighton University, Omaha, Nebraska, 2008
A.; Bochmann, M., Advanced Inorganic Chemistry, 6th Edition, ISBN 978-0-471-19957-1, John Wiley & Sons, Inc., 1376 pages, page 98, 1999
Online since: January 2016
Authors: David Andrew Bradley, Yusoff Mohd Amin, Mohd Jamil Maah, Siti Fairus Abdul Sani, Siti Nurasiah Mat Nawi, Nurul Najua Zulkepely, Norfadira Wahib, Ung Ngie Min
Thermoluminescence Characteristics of Cylindrical Optical Fibers with Different Diameters in Radiation Dosimetry Subjected to Electron Irradiation
SITI NURASIAH Mat Nawi1, a*, NORFADIRA Wahib1, b,
NURUL NAJUA Zulkepely1,c,YUSOFF Mohd Amin1,d, UNG Ngie Min2,e, DAVID Andrew Bradley3,f, SITI FAIRUS Abdul Sani3,g
and MOHD JAMIL Maah4,h
1 Radiation Research Laboratory, Department of Physics, Faculty of Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia.
2 Department of Clinical Oncology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
3 Centre for Nuclear and Radiation Physics, Department of Physics, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
4 Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur, Malaysia
asitinurasiah_90@yahoo.com, bfadira_0415@yahoo.com, cnajuazulkepely@um.edu.my, dyusoffmohdamin@um.edu.my, enm_ung@um.edu.my, fd.a.bradley@surrey.ac.uk, gs.abdulsani@surrey.ac.uk and hmjamil
The samples were annealed in an oven at a temperature of 400 ºC for one hour in order to erase any irradiation memory from the thermoluminescent material, stabilizing the trap structure and restoring it to initial conditions existing before irradiation.
Nisbet, Characterization of Ge - doped optical fibres for MV radiotherapy dosimetry, Radiation Physics and Chemistry. 98 (2014) 33–41
Bradley, The thermoluminescence response of Ge-doped optical fibre subjected to photon irradiation, Radiation Physics and Chemistry. 61 (2001) 409–410
The samples were annealed in an oven at a temperature of 400 ºC for one hour in order to erase any irradiation memory from the thermoluminescent material, stabilizing the trap structure and restoring it to initial conditions existing before irradiation.
Nisbet, Characterization of Ge - doped optical fibres for MV radiotherapy dosimetry, Radiation Physics and Chemistry. 98 (2014) 33–41
Bradley, The thermoluminescence response of Ge-doped optical fibre subjected to photon irradiation, Radiation Physics and Chemistry. 61 (2001) 409–410
Online since: November 2012
Authors: Antonio Eduardo Martinelli, Marcus Antonio de Freitas Melo, Julio Cezar de Oliveira Freitas, Filipe Silva de Oliveira, Dulce Maria de Araújo Melo, Ana Cecilia Vieira da Nóbrega
Effect of Mud Acid on Portland-aqueous Polyurethane Composites to Oil Well Cementing
Ana Cecilia Vieira da Nóbrega1,a, Antonio Eduardo Martinelli2,b,
Dulce Maria de Araújo Melo3,c, Marcus Antonio de Freitas Melo4,d,
Júlio Cezar de Oliveira Freitas5,e and Filipe Silva de Oliveira2,f
1Civil Engineering Department, Technology Center, Federal University of Pernambuco, Campus Agreste, 55002-970, Caruaru/PE, Brazil
2Material Engineering Department, Federal University of Rio Grande do Norte, 59072-970, Natal/RN, Brazil
3Chemistry Department, Federal University of Rio Grande do Norte, 59072-970, Natal/RN, Brazil
4Chemistry Engineering Department, Federal University of Rio Grande do Norte, 59072-970, Natal/RN, Brazil
5Petroleum Chemistry Department, Federal University of Rio Grande do Norte, 59072-970, Natal/RN, Brazil
aacvn@supercabo.com.br, baemart@uol.com.br, cdaraujomelo@gmail.com, dmarcus@ct.ufrn.br, ejuliofreitasj@hotmail.com, ffilipe.flcorp@gmail.com
Keywords: well cementing
The presence of a polymeric net formed along the structure of hardened cement decreases the permeability of the hardened slurry, as well as forms a degraded layer impregnated with chemically modified polymer when in contact with acids, improving bulk protection.
Al-Yami, A Study of Acid Cement Reactions Using the Rotating Disk Apparatus, in: International Symposium on Oilfield Chemistry, Society of Petroleum Engineers, Houston, Texas, U.S.A., 2007
Gold, Study of Cement Resistance to the Attack of Acid Solutions, in: International Symposium on Oilfield Chemistry, 1997 Copyright 1997, Society of Petroleum Engineers, Inc., Houston, Texas, 1997.
The presence of a polymeric net formed along the structure of hardened cement decreases the permeability of the hardened slurry, as well as forms a degraded layer impregnated with chemically modified polymer when in contact with acids, improving bulk protection.
Al-Yami, A Study of Acid Cement Reactions Using the Rotating Disk Apparatus, in: International Symposium on Oilfield Chemistry, Society of Petroleum Engineers, Houston, Texas, U.S.A., 2007
Gold, Study of Cement Resistance to the Attack of Acid Solutions, in: International Symposium on Oilfield Chemistry, 1997 Copyright 1997, Society of Petroleum Engineers, Inc., Houston, Texas, 1997.
Online since: December 2013
Authors: Sim Yeng Peng, Sin Yi Wen, Sharmini Jegachandra, Mohammad Hosseini Fouladi, Marwan M. Shamel, Pang Zong Xin, Chong Chien Hwa, Satesh N. Namasivayam, Masomeh Ghassem, Mohd Jailani Mohd Nor
Likewise, natural fiber when compressed consists of similar structures to that of the above materials.
Chemistry Today. 16 (1998) 1-19
Chemistry of Fire Retardancy.
Chemistry of Solid Wood, (1984) 531-574
Chemistry Today. 16 (1998) 1-19
Chemistry of Fire Retardancy.
Chemistry of Solid Wood, (1984) 531-574
Online since: October 2008
Authors: Aliassghar Tofighi
After preparation of DCPD by wet chemistry, the material was dry milled in an Attritor high energy
process (at 400 RPM) during 20 minutes.
The final product was a low crystalline calcium deficient apatite, similar to the composition and structure of bone mineral.
The chemical composition and structure of this phase was similar to the natural bone mineral composition.
The final product was a low crystalline calcium deficient apatite, similar to the composition and structure of bone mineral.
The chemical composition and structure of this phase was similar to the natural bone mineral composition.