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Online since: January 2022
Authors: Abdumalik G. Gaibov, K.I. Vakhobov, B.V. Ibragimova, U.E. Zhuraev, D.T. Rasulova
Gold with a density of about 30 - 50 mgramm/cm2was deposited on the input window of the Si-n-p-structure.
Then the structure was assembled into the package.
Abstracts. report XXXIII Meetings on nuclear spectroscopy and the structure of the atomic nucleus.
Tretyakov, Solid State Chemistry.
Smirnov, Non-destructive methods for controlling the parameters of semiconductor materials and structures.
Online since: October 2011
Authors: Si Han Wang, Yu Han Sun, Wen Huai Li, Gui Zhi Wang, Gang Wang, De Bao Li, Fan Hua Kong, Hai Cheng Xiao
China 3 State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, P.R.
Results and discussion Structure Fig.1 gives the XRD patterns of the samples.
Compared with Fe/ADM, the CO pretreated Fe/ADM catalyst showed little change which indicating a MoS2-like bulk structure even after CO pretreatment.
However, the relatively remarkable peak of K2CO3 in CO pretreated Fe/ADM suggested that more separated K2CO3 phase existed in the bulk of MoS2 structure.
The intercalation of alkali metal atoms such as K, Na, Li and Cs into the MoS2 structure could take place [9,10].
Online since: February 2006
Authors: Peter Hodgson, Cui E Wen, X.B. Chen, A. Nouri
Kim and Kokubo et al. proposed that the bonding strength of the apatite layer to the metal substrate could be over 30 MPa, and attributed such strong bonding strength to a graded structure established at the apatite-metal interface in the environment of the human body [14, 15].
Surface structures of the alloys after the AH treatment and soaking in a SBF were studied to clarify the nature of the bioactive surface structure formed on the alloys and how it changed in the SBF.
The surface structure and chemical composition of the coatings were observed before and after AH treatment.
However, the alkali-treatment process produces hydrogel layers with a porous network structure on the surfaces of the Ti alloy specimens [13].
In general, bonelike apatite formation on an implant material is governed by the surface chemistry, surface energy and surface topography of the implant material [19]. 4.
Online since: January 2026
Authors: Ian Dominic F. Tabañag, Licca May Katrina N. Camay, Richmond C. Pepito, Christine R. Reguya
The properties, chemical structure, and purity of the extracted lignin are strongly dependent on the employed treatment method.
Three-milligram sample of the oven-dried lignin precipitate was sent to the Department of Chemistry Laboratory (University of San Carlos) for the Fourier Transform-Infrared (FT-IR) spectra analysis.
Wegener, Wood: Chemistry, Ultrastructure, Reactions, 2nd ed.
Dence, Methods in Lignin Chemistry.
Brauns, The Chemistry of Lignin, 1st ed.
Online since: April 2013
Authors: R. Bréthous, V. Nassiet, B. Hassoune-Rhabbour
MODELS OF ADHESIVE BONDING OF HYBRID STRUCTURES R.
A good answer can be a toughness improvement via micro- or a nano-structured joint.
Djilali et al[3] reveals an important decrease of TgLTA when polymer is micro-structured.
First, they allow obtaining a homogeneous nano-structure in DGEBA / MDEA system.
To reach this structure, triblock copolymers are good candidates.
Online since: October 2010
Authors: Kameshwar Kumar, Nagesh Thakur, S.C. Katyal, Pankaj Sharma
Bi atom in the structure can crosslink the chains and thus enables a better covalent network structure to be developed.
It is reported that increasing the number of lone pair electrons decreases the strain energy in a system and a structure with large number of lone pair of electrons favours glass formation [26].
It can be concluded that some lone pair electrons in the structure of a system is a necessary condition for obtaining the system in glassy state.
Further we can also correlate the decrease in theoretical energy gap with the decrease of heat of atomization. 3.7 Mean bond energy and glass transition temperature The glass transition temperature (Tg) is that characteristic temperature below which the glassy system frozes into a structure which can not change into another structure and is related to the magnitude of the cohesive forces in the system.
Sanderson, Inorganic Chemistry (Affliated East -West Press PUT, New Delhi, 1971)
Online since: November 2017
Authors: Dalibor Vojtěch, Jiří Kubásek, Drahomír Dvorský
Corrosion resistance is also dependent on the preparation method of the material consequently on the structure of the material.
Also more intermetallic phases were present in the structure than in case of AZ31 alloy.
However hexagonal structure may also be deformed by twinning mechanism, which requires much less energy.
Veselý, M.Čavojský, Structure and mechanical characterization of Mg-Nd-Zn alloys prepared by different processes.
Cavojsky, Structure and mechanical properties of WE43 prepared by powder metallurgy route.
Online since: July 2015
Authors: Yong Shi, Fang Hong Xue, Hao Zhang, Chun Yan Li
XRD analysis Fig. 4 XRD patterns of the as-synthesized and activated CuBTC catalysts XRD was used to characterize the structure changes of CuBTC during activation process.
Yaghi, Design, Synthesis, Structure, and Gas (N2, Ar, CO2, CH4, and H2) Sorption Properties of Porous Metal-Organic Tetrahedral and Heterocuboidal Polyhedra, J.
Yaghi, Synthesis and Structure of Chemically Stable Metal-Organic Polyhedra, J.
Zhang , L.Chen, A first principles study of gas adsorption on charged CuBTC, Computational and Theoretical Chemistry, 976 (2011) 153–160
Bordiga, Local Structure of Framework Cu(II) in HKUST-1 Metallorganic Framework: Spectroscopic Characterization upon Activation and Interaction with Adsorbates.
Online since: December 2018
Authors: Qiang Zhu, W.F. Guo, C. Guo
At low magnification, the layer-by-layer structure of the SLM-processed material can be seen and the boundaries of these tracks were made visible by etching.
On the other hand, the conventionally-processed material does not show any of these solidification structures.
During aging process, the continuous cellular structure and dendrites are broken into fine columnar structure.
At aging temperature over 500ºC, a transformation presents that martensite reverts to austenite structure (α'→γ) .
Materials Chemistry and Physics, 2010, 122(1): 138-145. ].
Online since: May 2019
Authors: Pattranuch Pongsuk, Jantrawan Pumchusak
The nanotube of halloysite (HNT) and nano-platelets of montmorillonite (MMT) were selected to study because of their unique structure, the high aspect ratio of each platelet and low cost.
The structures of HNT and MMT are different, HNT is a tubular structure as shown in the SEM image in Fig 3b, (insert), MMT is a plate-like as shown in SEM image in Fig 3c, (insert).
The XRD pattern of PEO-LiCF3SO3 shows two main diffraction peaks at 2q = 19.0 and 23.1 which are related to planes (1 2 0) and (0 3 2), confirming its semi-crystalline structure of PEO.
The decrease in melting temperature (Tm) of SPE with the incorporation of inorganic filler seems to be related to changes in crystal lamellar thickness and its inhibition of the forming perfect crystal structure [18, 19].
Also, low thermal energy is needed to melt crystalline structure that leads to decreasing of DHm.