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Online since: June 2014
Authors: Hai Ping Wang
At room temperature and normal pressure, LiBH4 is crystallized as an orthorhombic structure (Pnma).
The calculated electronic band structure along the various symmetry lines are illustrated in Fig. 2.
The energy gap (Eg) of LiBH4 with Pnma structure is about 7.1 eV, which is consistent with the results of P.
Band structure of LiBH4 (a) Pnma, (b) P21/c, (c) Cc Fig. 3.
Solid state chemistry Vol. 180 (2007), p. 510 [6] Z.
Online since: March 2010
Authors: Peter Hodgson, Ilana B. Timokhina, Subatra Mukherjee, Hossein Beladi
The DSIT process also reveals general insensitivity to chemistry variations and can therefore be employed to significantly refine a broad range of steels [3].
Interestingly, an ultrafine ferrite structure with an average grain size of ~1 µm was successfully formed through static transformation to ferrite.
�anobainitic Structured Steels The development of the nanostructured bainitic steels began from thermodynamic calculations by Bhadeshia and co-workers [10].
In general, a decrease in the transformation temperature refined the bainitic structure (i.e. lath, block and packet size) and weakened the variant selection.
In addition, a nanobainitic structured steel produced through isothermal heat treatment at 200ºC revealed a similar crystallographic arrangement to a martensitic structure which could explain the high toughness.
Online since: February 2022
Authors: Sergei Bukharov, Aleksey Baranov, Victoriya Mosiyuk
The tooling structure consists of inner and outer shells and glass-fiber-reinforced honeycomb core placed between them.
The purpose of this work was the manufacture of tooling intended for molding and bonding of complex curvature honeycomb sandwich structures.
Tooling structure.
Different types of changes in honeycomb core structure.
Russian Chemistry Journal, 2001, Vol.ХLV, No.2
Online since: January 2013
Authors: Lin Zhang, Yi Ju, Duo Zhang
From the figure, we can clearly observe the transformation process of the namorod from the orderly structure to disorderly structure.
So rod2 is typical face centered cubic crystal structure.
It shows that the nanorod has the structure with orderly crystal at 50K.
Figure 6 is the atom packing structure of the nanorod at given temperatures.
Jayasena: Clinical Chemistry, (1999), 45 (9), p. 1628-1650
Online since: June 2010
Authors: Masanori Hirano, Norio Kuno
Anatase-Type Ti1-2XNbXAlXO2 Solid Solution/Silica (SiO2) Composite Nanoparticles: Synthesis, Phase Stability, and Photocatalytic Performance Masanori Hiranoa and Norio Kuno Department of Applied Chemistry, Aichi Institute of Technology, Toyota, 470-0392 Japan a hirano@aitech.ac.jp Keywords: Anatase, titania, solid solution, composite nanoparticle, hydrothermal synthesis Abstract.
The anatase-to-rutile phase transformation in the course of heating in air was retarded to maintain the anatase-type structure up to more than 1050 °C without a trace of rutile phase by the formation of composite nanoparticles (Ti0.90Nb0.05Al0.05O2/SiO2 = 100/20 mol%) with amorphous silica.
Fig. 5 Phase transformation from anatse- to rutile-type structure for the samples Ti0.90Nb0.05Al0.05O2/SiO2 with SiO2 = 0 and SiO2 = 20.
Online since: January 2013
Authors: Xue Wen Wang, Zhou Hu Deng, Yuan Zhang
The crystal structure, surface microstructure morphology and composition of the samples are analyzed in XRD and SEM with EDX, and the surface electronic state and optical properties of the samples are characterized in X-ray photoelectron spectroscopy (XPS) and Ultraviolet-visible Spectrum instruments.
In this paper, the crystal structure, microstructure and optical properties of CIS material prepared with batch-growth and low-cost horizontal Bridgman method are analyzed[10-11], which can provide reliable and significant data for the preparation of the high-efficient and low-cost solar cells. 2 Characterization experiments and Analysis 2.1 Phase analysis The XRD spectrum of the sample prepared by the horizontal Bridgman method with double-heat sources is obtained in X-ray diffraction instrument, which are shown in Fig.1. and it is seen that the sample has two phases that are CuSe2 and CIS,and then the largest peak is one of the CuSe2 phase.
Journal of Physics and Chemistry of Solids, 2005, 66(11): 1855-1857
Online since: August 2009
Authors: Wei Xiang, Zai Sheng Cai
Properties of Multiple-functional Cationic Silk Fabrics Wei Xiang 1,a , Zaisheng Cai 2,b 1 Institute of Textile Engineering, Zhejiang Industry Polytechnic College, North of railway station, Shaoxing, Zhejiang 312000, PRC 2 College of Chemistry and Chemical Engineering; Key Laboratory of Science &Technology of Eco-Textile, Ministry of Education, Donghua University, PRC *Corresponding author.
The surface structure of modified silk fiber was studied by X-ray photoelectron spectra (XPS) and FT-IR spectra.
The surface structure of silk fibers was investigated by attenuated total reflection fourier transform infrared spectrum (ATR-FTIR) and X-ray photoelectron spectra (XPS).
Online since: July 2015
Authors: Fatimah A’thiyah Sabaruddin, Noorasikin Samat, A.I.H Dayang Habibah
It is known that polymeric materials are easily to get on fire due to their chemical structures.
Polymer is classified as highly combustible materials due to its chemical structures [2].
Journal of Materials Chemistry.
Online since: January 2010
Authors: Ulrich Beck, Henrike Jesswein, Birgit Finke, Karsten Schröder, Arne Weidmann, Barbara Nebe, Regina Lange
PPAAm allows the cells to literally melt into the groove structure of the titanium.
All the altered cellular adhesion structures in dependence of the material's surface topography finally end in a change in cell functions such as mineralization − indicating a strong cell structure-function-dependence [1-4].
Results and Discussion Concerning the combinatory effect of topography and chemistry, plasma treatment is ideal for chemical modifications of implant surfaces with different topographies.
The bone cells lie over a large area and very close to the surface, which suggests full acceptance and allows the cells to literally melt into the groove structure of the structured titanium surfaces, so that the edges of the cells can hardly be distinguished from the surface (Fig. 1).
A designed structure on the surface, as observed on machined and corundum blasted titanium, enhances this effect two times.
Online since: May 2019
Authors: Alexis Béakou, Anh Vu Nguyen, Karine Charlet, Belhassen Chedli Bouzgarrou, Ky Nam Pham, Trong Dai Vu
Different structures of the hybrid composite were fabricated and experimentally tested.
In order to analyze hybrid composite structure, an analytical homogenization model (AHM) was also developed.
After that hybrid composite plates were manufactured with different structures.
Conclusion With the aim of enhancement of use of natural fiber in high loading structure, in this paper, the hybrid composite structure constituted of woven carbon fiber and flax fiber is studied.
Many thanks are expressed to the Chemistry laboratory and the IUT laboratory in Clermont Ferrand, France for the experimental support and guidance.