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Online since: July 2011
Authors: Kai Jun Wang, Xiao Lan Cai, Yu Dong Jiang
The powder exhibits a flake structure.
Furthermore, PVA can form a bilayer structure on particle surface.
Chemistry World, 1999, 56(9):498~500.
Eutectic structure and bulk glass formation in Mg-based alloys[J].
Online since: June 2010
Authors: María F. Mora, Laura E. Valenti, Carlos D. García, Carla E. Giacomelli
Giacomelli 2,d 1 Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249.
The discussion is focused on the consequences of the adsorption process on the structure and properties of both proteins and CNTs.
Covalent functionalization requires the modification of the CNTs and/or the protein structure that usually causes significant changes on both the physical properties of the surface and the tridimensional structure of the protein.
Consequently, protein interactions can be regulated by controlling the size, surface chemistry, and charge of the CNTs.
Suárez: Analytical and Bioanalytical Chemistry Vol 382 (2005), p. 1783. [4] M.
Online since: August 2011
Authors: Liu Qing Chen, Xu Guang Liu, Bing She Xu, Chun Yan Sun
Analysis of the electronic structure of Alq2A calculated by quantum chemical calculations reveals a localization of orbital and the distribution of orbital energy.
It has been reported that charge-transporting properties of complexes can be changed by varying ligand structure and the number of ligands.
Electronic Structure Electronic structures were calculated by PW91 exchange and relative functional theory using Dmol3 modules and the electronic spectra were calculated by DFT using VAMP modules.
Conclusions We report experimental studies, electronic structures and EL properties of Alq2A.
OLEDs made using Alq2A as electron transport material shows a maximum current efficiency of3.82cd A-1, which has an approximately 50% higher current efficiency than Alq3 structure under the same experimental conditions.
Online since: August 2013
Authors: Ming Shan Zhou, Jian Cai Xia
The most common EG precursors are GIC with sulfuric acid as intercalant to prepare in chemistry oxidation, but the small exfoliated volume will limit its application, especially as electromagnetic interference shielding materials [13].
The composition, structure and properties of the graphite intercalation compound were characterized and analyzed by SEM, FTIR, XRD, TG, DSC, VSM.
These indicate that the crystal structure of the GIC is the same as flake graphite and still consists of two dimensional sheets of carbon.
Therefore, the multilayer structure still remains inside the GIC.
These indicate that the multilayer structure still exists, but the graphene plane distance has been changed inside the GIC.
Online since: June 2015
Authors: Hendrik O. Lintang, Salasiah Endud, Nurliana Roslan, Zainab Ramli
It was found that the structure of aluminophosphate molecular sieves, AlPO4-5 with AFI structure (hexagonal symmetry) is the perfectly cylindrical channels.
It can be concluded that TEA has better templating ability than TEAOH to the formation of AlPO-5 structure.
Both TAPO-5 catalysts showed XRD patterns that were similar to AlPO-5 and identical with AFI structure.
The spectrum of the both AlPO-5 catalysts exhibits absorption at 552 cm-1 and 636 cm-1 which was assigned to the double ring structure.
Theocharis, Study of the Structure and Properties of TAPO-5 Molecular Sieves, Catalysis Letters 3 (1989) 371-378
Online since: August 2019
Authors: L.A. Smirnova, Olga A. Ryabkova, E.V. Salomatina
At the same time, the chemical composition and structure of the surface are two key factors affecting the wettability of the material by different liquids.
Modification of these properties can be achieved by introducing into the copolymer’s chains structure a third organic monomer.
The structure of terpolymers was studied by X-ray diffraction.
Smirnova, Synthesis, structure, and properties of organic–inorganic nanocomposites containing poly(titanium oxide), J.
Sabel, Basic Techniques of Preparative Organic Chemistry, 1st edition, Pergamon, 1967
Online since: December 2011
Authors: Xi Gang Yuan, Chang Chun Duan, Chun Jiang Liu
Adding baffles at plate exits with the same structure as downcomers; Ⅲ.
After downcomer structure was modified, continuous phase flow pattern was optimized to a large extent.
They were in the same size only except downcomer structure.
This structure may provide some reference and help for modifying extraction equipment.
Luo: Industrial & Engineering Chemistry Research, Vol. 50 (2011) p.1110
Online since: June 2014
Authors: C.H. Rios-Reyes, Luis Humberto Mendoza Huizar, Juan Coreño-Alonso
There have been constructed 10 different rutile structures, from a 6 atoms cluster (for the smallest) to a 356 atoms cluster (for the biggest).
Each structure was modeled according to the number of units cell made by Hyperchem.
Another electronic property which provides a view of the cluster electronic structure is the density of states (DOS).
Of these structures is observed that the behavior of the bands are continuous, which is due to the orbital overlap.
Stewart, Stewart Computational Chemistry, Colorado Springs, CO, USA, HTTP://OpenMOPAC.net (2012)
Online since: November 2013
Authors: Wassanai Wattanutchariya, Tarin Sukhachiradet
Results show that the output scaffolds have an interconnected porous structure with a pore size around 150-200µm and an average porosity of 94.26%.
The volume of scaffold was calculated and porosity of scaffold was obtained by Eq.1 Porosity(%)=V1-V2Vscaffold×100 (1) Pore Structure.
The pore structure of porous scaffold was examined by scanning electron microscope (SEM).
% porosity Specimen # Figure 2 Porosity percentage of porous scaffold Pore Structure.
Fig 3 showed that fabricated porous scaffold structure is porous and share similarities with human trabecular bone.
Online since: October 2010
Authors: Guo Dong Hao, Jin Xue Zhang
Introduction The micro-arc oxidation (MAO) is a novel technology, including the micro plasma electric discharge, the complex electrochemistry, plasma chemistry and the thermochemistry process, by which oxide compound ceramic films are grown on the surface of valve metal alloys, which has been developed rapidly in recent years [1-3].
In this paper the nanostructured surface layer was produced on the Ti-6Al-4V alloy by SMAT[5-7] technique, and then the compound ceramic coatings of surface SNC/MAO were prepared on the nanocrystallized surface of Ti-6Al-4V alloy by MAO, and the phase composition and structure, morphology and the analysis of the elements were discussed.