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Online since: January 2007
Authors: Soon Yong Jeong
Jeong* Applied Chemistry & Engineering Division, Korea Research Institute of Chemical Technology, P.O.
The basic structure of kenyaite is composed of duplicated SiO4 tetrahedral sheets and is similar to clay minerals with no aluminum.
The structure of porous graphite destroys at 1100℃, and at 1350℃, porous graphite is transformed to silicon nitride (Si3N4).
The layered structure did not change during the synthetic procedure of graphite.
Summary In conclusion, porous graphite with well-developed layered structure was successfully prepared by using kenyaite template.
Online since: August 2010
Authors: Chao Lu, Mei Ling Xia
Introduction Bonding structure to be more and more widely used on the aviation industry, abroad began to apply the metal bonding structure on the plane from the 1940s.
The bonding technology is a great deal of development, so far it has become an important body structure of aircraft, and its strength is always the focus of attention.
The commerical finite element soft ABAQUES is used for structure analysis.
Vol. 26(2006), p.361 [3] Cao ping, You Min, Chemistry and Adhesion, Vol. 23(2004), p.235 [4] V.V.
J.of Solids and Structures, Vol. 44(2007), p.1244
Online since: June 2003
Authors: Eugeniusz Łągiewka, Małgorzata Karolus
� giewka Institute of Physics and Chemistry of Metals, University of Silesia, ul.
The studies on structure of electrodeposited Ni-Mo nanocrystalline alloys are the subject of this paper.
The structure analysis was prepared by Rietveld Refinement using DBWS 1988 RR version program.
This may be achieved by changing the alloys from a microcrystalline to a nanocrystalline structure.
The structure determination and calculation of the unit cell parameters were prepared by the Rietveld refinement using the DBWS 1988 RR version programme [2,3].
Online since: November 2007
Authors: Pierre Layrolle, Guy Daculsi, Eric Aguado, Pierre Weiss, Daniel Chappard, G. Legeay
This multidisciplinary research involves solid state chemistry of calcium phosphate bioceramics, organic chemistry with synthetic or natural polymers, cell biology, and animal models for testing biocompatibility and biofunctionality, as well as clinical trials.
Ectopic bone formation with Haversian structures was observed in close contact with the MBCP granules.
The cement matrix dissolved as expected, forming an open structure and interconnecting porosity.
This experiment indicated rapid colonisation by osteogenic cells for the improved MBCP due to its higher interconnected porosity and microporous structure.
XRay radiography and microCT revealed a well-organised and mineralised structure of newly-formed bone [101].
Online since: January 2013
Authors: Hui Huang, Zhong Cheng Guo, Ren Chun Fu
FTIR was employed to character the structure of polyaniline. 1.
The FTIR spectra would to analyse the relationship between conductivity and molecule structure 2.
EXPERIMENTS AND DETAILS The chemicals used in this experiment were analytical grade. aniline were purchased from Aladdin chemistry Co.
Online since: January 2009
Authors: Jie Zhou, Guang Ye, Klaas van Breugel
The Portland cement with blast furnace slag has a denser pore structure than the others.
Pore structure.
Then, the PC blended with FA shows a big change in pore structure.
In the three blended mixtures, the PC with BFS has the densest pore structure.
Regourd, in: Lea's chemistry of cement and concrete, 4th Edn, edited by P.
Online since: November 2012
Authors: Gladys Patricia Abdel Rahim, Jairo Arbey Rodríguez
We considered the NaCl-like, CsCl-like, ZB-like, WZ-like, and NiAs-like structures, and were looking for a phase transition between the NaCl-like structure and the others phases induced by means of high pressure.
We used about 135 k-points for the five structures.
This can be explained by the fact that NiAs and NaCl are almost identical in structure.
Fig.5 DOS partial and total for ScC in the NiAs structure at P=0 Fig.6 DOS partial and total for ScC in the NiAs structure at P=0 Fig.7 DOS partial and total for NbC in the NaCl structure at P=0 Fig.8 DOS partial and total for NbC in the NaCl structure at P=0 References [1] Jameson Maibam, B.
Sanyal, Journal of physics and Chemistry of solid, 72, 810-816 (2011)
Online since: September 2013
Authors: Illa Ramakanth
Additive Assisted Micelle -to- Vesicle Transition in Non-ionic Mixed Surfactant Systems: Niosomes for Fullerene C60 Encapsulation Illa Ramakanth*a,b aDepartment of Chemistry, Rajiv Gandhi University of Knowledge Technologies, Hyderabad 500 032, India bDepartment of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India ramakanthilla@yahoo.com [Submitted: August 8, 2012; revised February 25, 2013; accepted: March 21, 2013] Keywords: Mixed Surfactants, Micelles, Vesicles, Micelle-to-Vesicle Transition, Niosomes.
The energy minimized structures of TW-80 and TX-100 are shown in Fig. 1(a & b).
Shown right are the respective chemical structures.
The chemical structures of some of the organic additives used in this work are shown below in Scheme 2.
Chemical structures of the various organic additives tested and used for micelle to vesicle transition.
Online since: February 2016
Authors: Qiu Li, Yun Huang, Zhong He Shui, Hai Ning Geng
By heating kaolin at 650-800oC, structure deformation of kaolin is introduced to lose long-range order of silicon-aluminium layer structure together with water and OH was removed from interlayers [1-5].
SEM secondary electron images of metakaolin with layered structure.
McWhinnie, The solid state chemistry of metakaolin-blended ordinary Portland cement, Journal of Materials Science, 35 (2000) 2701-2710
Olek, The influence of metakaolin and silica fume on the chemistry of alkali-silica reaction products, Cement & Concrete Composites, 23 (2001) 485-493
Mermerdas, Improving strength, drying shrinkage, and pore structure of concrete using metakaolin, Materials and Structures, 41 (2008) 937-949
Online since: March 2015
Authors: Lu Zhuo Chen, Ming Cen Weng, Wei Zhang
Structure and Principle The structure of the bending actuator includes two layers of long strips, as shown in Fig. 1.
Composite material has a double-layer structure.
The bending actuator is basically a one-layer structure of the CNT-rich layer.
Chen, Low-voltage-driven sustainable weightlifting actuator based on polymer-nanotube composite, Macromolecular Chemistry and Physics. 212 (2011), 1671-1676
Chen, Externally induced thermal actuation of polymer nanocomposites, Macromolecular Chemistry and Physics. 212 (2011), 992-998