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Online since: April 2018
Authors: Milena Kubišová, Libuše Sýkorová, Oldřich Šuba, Vladimír Pata
To determine the quality of this surface, we serve contact or non-contact sensing devices to help us record the structure.
Surface structure evaluation is carried out according to ČSN ISO 4287 and ČSN ISO EN 4288.
Figure 2 Real surface profile Microstructures It is characterised by an excellent surface structure.
Conclusion This article deals with the evaluation of the structure of the surface.
Physics and chemistry of interfaces. 2nd ed. revised and enlarged.
Surface structure evaluation is carried out according to ČSN ISO 4287 and ČSN ISO EN 4288.
Figure 2 Real surface profile Microstructures It is characterised by an excellent surface structure.
Conclusion This article deals with the evaluation of the structure of the surface.
Physics and chemistry of interfaces. 2nd ed. revised and enlarged.
Online since: April 2008
Authors: Jiří Šubčík, Ladislav Koudelka, Zdeněk Černošek, Petr Mošner
All prepared MoO3containing
glasses are blue coloured due to the presence of Mo
5+ ions in the glass structure.
According to the previous study of Li2OP2O5-MoO3 system glasses [11] molybdenum oxide enters glass structure forming MoO6 octahedra and MoO4 tetrahedra.
Conclusions The incorporation of molybdenum oxide into borophosphate structural network of (1-x)[0.5ZnO0.1B2O3-0.4P2O5]-xMoO3 glasses modifies its structure and properties.
The incorporation of MoO3 into the glass structure is accompanied by the depolymerization of phosphate chain structure.
The investigation of the structure of glasses by vibrational and NMR spectroscopy is in progress.
According to the previous study of Li2OP2O5-MoO3 system glasses [11] molybdenum oxide enters glass structure forming MoO6 octahedra and MoO4 tetrahedra.
Conclusions The incorporation of molybdenum oxide into borophosphate structural network of (1-x)[0.5ZnO0.1B2O3-0.4P2O5]-xMoO3 glasses modifies its structure and properties.
The incorporation of MoO3 into the glass structure is accompanied by the depolymerization of phosphate chain structure.
The investigation of the structure of glasses by vibrational and NMR spectroscopy is in progress.
Online since: July 2007
Authors: Seung Eon Kim, Jung Woog Shin, Yong Taek Hyun, Dong June Chung, S.J. Heo, J.H. Lee
Results and Discussion
Pore structure and compressive modulus.
SEM images showing pore structure of PCL/HA composite scaffolds fabricated by particulate leaching.
Pore structure of PCL/HA scaffolds fabricated by freeze drying.
That is, initial cell attachment is not affected by HA content or pore structure.
Cell proliferation was affected by not scaffolding routes but surface chemistry.
SEM images showing pore structure of PCL/HA composite scaffolds fabricated by particulate leaching.
Pore structure of PCL/HA scaffolds fabricated by freeze drying.
That is, initial cell attachment is not affected by HA content or pore structure.
Cell proliferation was affected by not scaffolding routes but surface chemistry.
Online since: November 2012
Authors: Wei Li, Xiao Chu Wang, Jian Peng Zhang
Rubber improves the internal structure of concrete mainly and doesn't change its chemistry performance of all kinds of concrete material through the physical and mechanical role, so it doesn't undermine the durability of concrete.
Durability performance The pore structure of concrete is the main factor that affects durability and other performance of concrete.
Adding right amount of rubber powder can improve the porosity of the concrete structure so as to improve the durability of concrete.
Bonding performance Due to poor compatibility of crumb rubber and cement paste, it results in that the interface structure of the crumb rubber and cement mortar can not form a valid connection.
Frame system of the main building structure can use the wall of the new energy efficient building materials in this region which was warm in winter and hot in summer.
Durability performance The pore structure of concrete is the main factor that affects durability and other performance of concrete.
Adding right amount of rubber powder can improve the porosity of the concrete structure so as to improve the durability of concrete.
Bonding performance Due to poor compatibility of crumb rubber and cement paste, it results in that the interface structure of the crumb rubber and cement mortar can not form a valid connection.
Frame system of the main building structure can use the wall of the new energy efficient building materials in this region which was warm in winter and hot in summer.
Online since: June 2014
Authors: Pavel Sherstnev, Adrian Zamani
This partially recrystallized structure develops by both gDRX and cDRX.
From Fig.2 (left) it can be seen that the structure is characterized by high angle grain boundaries and the grain size lies between 2-6 µm (in the range of the subgrain size).
Thus, from Fig.2 (right) it is clear the analyzed sample has a partially recrystallized and deformed structure.
Reiso, Effect of alloy chemistry and process parameters on the extrudability and recrystallization of 6082 alloy, ET’08 – The conference of innovation in aluminium extrusion, Orlando, 2008 [5] E.D.
Maier, A new method for determining dynamic grain structure evolution during hot aluminum extrusion, J.
From Fig.2 (left) it can be seen that the structure is characterized by high angle grain boundaries and the grain size lies between 2-6 µm (in the range of the subgrain size).
Thus, from Fig.2 (right) it is clear the analyzed sample has a partially recrystallized and deformed structure.
Reiso, Effect of alloy chemistry and process parameters on the extrudability and recrystallization of 6082 alloy, ET’08 – The conference of innovation in aluminium extrusion, Orlando, 2008 [5] E.D.
Maier, A new method for determining dynamic grain structure evolution during hot aluminum extrusion, J.
P-Incorporated TiO2 Nanotube Arrays by Wet Impregnation Method for Efficient Photocatalytic Activity
Online since: August 2014
Authors: Srimala Sreekantan, Khairul Arifah Saharuddin
Results indicate that the nanotube immersed in H3PO4 for 90 minutes with an average diameter of 100 nm and an optimal tube length of 12 μm with a thin tube wall (20 nm) is the optimum structure required to achieve high photocatalytic reaction.
The crystal structure and photocatalytic activity of TiO2 nanotubes and P-incorporation TiO2 nanotubes were also investigated.
X-ray diffraction (XRD, Phillip model PW 1729) were carried out to study the crystal structure of P incorporated TiO2 nanotubes, while photoelectron spectra were obtained through X-ray photoelectron spectroscopy (XPS, JEOL JPS-1000SX).
As shown, all samples have a dominant anatase structure whereby the Ti peak observed was belong to the Ti foil substrate underneath the oxide nanotubes layer.
Cao Journal Of Materials Chemistry.
The crystal structure and photocatalytic activity of TiO2 nanotubes and P-incorporation TiO2 nanotubes were also investigated.
X-ray diffraction (XRD, Phillip model PW 1729) were carried out to study the crystal structure of P incorporated TiO2 nanotubes, while photoelectron spectra were obtained through X-ray photoelectron spectroscopy (XPS, JEOL JPS-1000SX).
As shown, all samples have a dominant anatase structure whereby the Ti peak observed was belong to the Ti foil substrate underneath the oxide nanotubes layer.
Cao Journal Of Materials Chemistry.
Online since: December 2018
Authors: Severino Rodrigues de Farias Neto, A.G. Barbosa de Lima, A.J. Ferreira Gadelha, T.R. Nascimento Porto, T.H. Freire de Andrade
b) Gas and particulate materials discharged by chimneys of chemistry and steel industries, cement and paper mills, thermal electric plants and oil refineries, which content the most of varied chemistry species.
For building the structured mesh, or computational domain, representing the physical domain of this study (Fig. 2), was utilized the ICEM-CFD software.
In the present work were taken into account the following points: a) Multicomponent transient, incompressible, tridimensional and non-isothermal flow; b) There’s no chemistry reaction; c) Is considered the gravitational effect; As the pollutant is considered an additional variable into the system, these approximations allow admitted that release pollutant do not affecting the air velocity field, since it concentration is extremely small as compared to total volume of the physical domain.
Conclusions From obtained numerical results of gaseous pollutant dispersion from thermoelectric chimney, can be concluded that: a) Mathematical model used could evaluate the behavior of chemistry species dispersion, issued in atmosphere from fossil fuels combustion to produce energy.
For building the structured mesh, or computational domain, representing the physical domain of this study (Fig. 2), was utilized the ICEM-CFD software.
In the present work were taken into account the following points: a) Multicomponent transient, incompressible, tridimensional and non-isothermal flow; b) There’s no chemistry reaction; c) Is considered the gravitational effect; As the pollutant is considered an additional variable into the system, these approximations allow admitted that release pollutant do not affecting the air velocity field, since it concentration is extremely small as compared to total volume of the physical domain.
Conclusions From obtained numerical results of gaseous pollutant dispersion from thermoelectric chimney, can be concluded that: a) Mathematical model used could evaluate the behavior of chemistry species dispersion, issued in atmosphere from fossil fuels combustion to produce energy.
Online since: May 2018
Authors: Paloma Trueba Muñoz, Joaquín R. Bascón Suárez, Ana M. Beltrán, José Antonio Rodriguez-Ortiz, Yadir Torres Hernández, Juan José Pavón Palacio, Esteban Alonso Álvarez, David C. Dunand
Calle 67, nº53 - 108, Medellín, Antioquia, Colombia.
3 Analytical chemistry Department, University of Seville.
The influence of the vessel material on the internal lamellar structure of the porous Ti samples is also studied.
Investigation of structure formation during freeze-casting from very slow to very fast solidification velocities, Acta Materialia. 59 (2011): 5135–5145
Freeze-Casting of porous Biomaterials: Structure, Properties and Opportunities, J.
The influence of the vessel material on the internal lamellar structure of the porous Ti samples is also studied.
Investigation of structure formation during freeze-casting from very slow to very fast solidification velocities, Acta Materialia. 59 (2011): 5135–5145
Freeze-Casting of porous Biomaterials: Structure, Properties and Opportunities, J.
Online since: March 2013
Authors: Suppalak Angkaew, Boonnak Sukhummek, Wunpen Chonkaew, Kritsana Pongcharoen, Kannika Lumpuengkul
The Effect of Titanium Dioxide and Additives on Heat Reflection and Thermal Reduction of Paint
Boonnak Sukhummek1,a, Suppalak Angkaew1,b, Wunpen Chonkaew1,c, Kritsana Pongcharoen1,dand Kannika Lumpuengkul1,e
1Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok, 10140, Thailand
aboonnak.suk@kmutt.ac.th (corresponding author),bsuppalak.ang@kmutt.ac.th, cchonkaeww@gmail.com, dart.vanzboy@gmail.com, ekannika.lumpuengkul@yahoo.co.th
Keywords:Titanium dioxide , Thermal reduction , Glass microsphere , External roof paint
Abstract.
The three-layer paint structure (topcoat, middle insulating layer, and bottom rust-protective layer) coated on zinc plate was used.
Materials which have high solar heat reflection and minimum heat transfer to the interior of building structure, consequently reducing air-conditioning power consumption and increasing the level of personal comfort, are remarkably required.
In order to investigate the heat reflection and thermal reduction properties of roof paints, three-layer paint structure including topcoat, middle insulating layer and bottom rust-protective layer, coated on zinc plate was prepared, as shown in Fig. 1.
The three-layer paint structure (topcoat, middle insulating layer, and bottom rust-protective layer) coated on zinc plate was used.
Materials which have high solar heat reflection and minimum heat transfer to the interior of building structure, consequently reducing air-conditioning power consumption and increasing the level of personal comfort, are remarkably required.
In order to investigate the heat reflection and thermal reduction properties of roof paints, three-layer paint structure including topcoat, middle insulating layer and bottom rust-protective layer, coated on zinc plate was prepared, as shown in Fig. 1.
Online since: December 2010
Authors: Tong Jiang Peng, Bai Li Su, Guo Hua Ma
It possesses a structural feature of 2:1 layered structure, which a layer of octahedral sheet was clamped by two layers of tetrahedral sheet of silicon-oxygen.
The structure of vermiculite is similar to montmorillonite, discrimination only lies in different cations of octahedral sheet.
Montmorillonite under the action of H2SO4, the structure was destroyed and formed Blount activity-Al-OH, -Si-OH and other broken bonds.
In terms of the acid leaching time only, the structure of phlogopite was not completely destroyed in the rage of set time.
Evangelou: Environmental Soil and Water Chemistry: Principles and Applications (Wiley, New York, 1998) [4] O.
The structure of vermiculite is similar to montmorillonite, discrimination only lies in different cations of octahedral sheet.
Montmorillonite under the action of H2SO4, the structure was destroyed and formed Blount activity-Al-OH, -Si-OH and other broken bonds.
In terms of the acid leaching time only, the structure of phlogopite was not completely destroyed in the rage of set time.
Evangelou: Environmental Soil and Water Chemistry: Principles and Applications (Wiley, New York, 1998) [4] O.