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Online since: August 2008
Authors: Rubens Chiba, Reinaldo Azevedo Vargas, Marco Andreoli, Emília Satoshi Miyamaru Seo
In particular, the La1xSrxMnO3, a complex oxide with a perovskite structure, shows desirable properties such as good electronic conductivity, chemical compatibility with electrolyte, thermal expansion coefficient similar to that of the electrolyte, and adheres to the electrolyte during thermal cycling [1,3,9].
The Figure 3 show the diffractogram obtained by X-ray diffractometry (XRD - Rigaku Multiflex) of LSM powders, had presented hexagonal crystalline structure, and the calculated lattice parameters of the crystalline structure were a = b = 5.5096 ± 0.0021 Å and c = 13.3218 ± 0.0002 Å.
A SEM photograph (Figure 5) of the film surface shows the required porous structure of the fabricated LSM films. 20 30 40 50 60 70 80 0 200 400 600 800 1000 1200 1400 1600 * * * * * * ** * * ** ** ** * Intensity (a.u.) 2θθθθ (degree) * LSM Fig. 4 - Cross section of LSM films on YSZ substrate.
The LSM powders were observed by XRD, presenting the formation of a main phase LSM with identification of hexagonal crystalline structure.
Chemistry Vol. 7 (1997), p. 2499
Online since: January 2017
Authors: Jakrapong Kaewkhao, Keerati Kirdsiri
Whereas, the distribution of oxygen in glass structure can be described in terms of molar volume.
As increase in molar volume (VM) reveals that the addition of Nd2O3 opens the glass structure.
The results in density, molar volume and field strength do support the structural changes with addition of Nd2O3 in glass structure.
Jayasankar, Dy3+-doped tellurite based tungsten-zirconium glasses: Spectroscopic study, Journal of Molecular Structure 1084 (2015) 182-189
Journal of Physics and Chemistry of Solids 71 (2010) 965-970
Online since: May 2020
Authors: Andrzej Kuczumow, Aliaksei F. Pantsialeyenka, Vyacheslav A. Okovity, Fiodar I. Pantsialeyenka
Okovity3,d 1Department of Physical Chemistry and Physicochemical Fundamentals of Environmental Engineering, The John Paul II Catholic University of Lublin, ul.
It has been established that during plasma spraying of a doped powder, a heterogeneous coating structure is formed.
As a result of laser treatment, the coating structure becomes homogeneous, remelting of boride shells and unmelted particles occurs (Fig 3.b), a significant decrease in the porosity of the coating is observed.
Porosity evolution from the initial material to the laser modified coating Due to the different modes of laser modification, it is possible to obtain different types of structures: at slow speeds and high energy densities, almost complete disappearance of pores occurs as a result of the remelting of the coating; at lower speeds and energy densities, only the "pushing" of the pores to the "coating - substrate" border, as a result of such processing, it is possible to obtain a composite "striped" structure that has good strength characteristics.
Methods for the study of material: structure, properties and processes of deposition of inorganic coatings.
Online since: February 2012
Authors: Qin Qin Luo, Ping Hu, Ting Yue Zhang, Xian Jiang Xiong
Thus it limits UHWMPE’s application as structure material[1-4].
EXPERIMENTAL Materials Chloroprene rubber A-90 (CR) was provided by Japan NEC Chemistry.
The structure of the adhesive films were observed using infrared absorption spectroscopy (FT-IR) (American NICOLET―605XB) (samples should be made by using KBr pellet method).
As the longer saturated hydrocarbons in the molecular structure of MMA and UHMWPE resin have the similar molecular structure, the two have good wetting effect.
All these cause the heat resistance of CR/MMA/CPE/MgO glue film is better than that of CR glue film, so it need higher temperature and fracture energy to damage the structure of CR/CPE/MMA/MgO glue film.
Online since: July 2023
Authors: Maria Artha Febriyanti Turnip, Priastuti Wulandari, Yumna Dzakiyyah, Richie Fane, Paula Santi Rudati, Muhammad Tegar Pambudi
It is extracted from red seaweed (algae) with the structure as a disaccharide repeating unit consist of hydroxyl groups.
This structure enables the formation of coordinate bond with cation or proton.
The transport of proton along the polymer structure of kappa carrageenan causes proton conductivity.
In this work, we characterized the structure, morphology, and conductivity of free-standing film kappa carrageenan with NH4Cl.
Pilon, Physical Interpretations of Nyquist Plots for EDLC Electrodes and Devices, The Journal of Physical Chemistry C. 122 (2018) 194–206
Online since: April 2009
Authors: Tatiana I. Khomenko, Olga S. Morozova, Alexandr V. Leonov, Christine Borchers, Ernst Kurmaev, Alexandr Moewes
Bulk composition and morphology of asmilled powders, as well as chemical state and local electronic structure of Ti, C, and B atoms were studied by X-ray diffraction (XRD), scanning (SEM), transition (TEM) and high-resolution transmission (HREM) microscopy and soft X-ray emission spectroscopy (XES), respectively.
Ti/C and Ti/B nanocomposites: preparation, structure, morphology and local bonding structure.
According to a previous study [5], this type of Ti/C morphology allows easy introduction of the carbon atoms into the Ti lattice that change the local bonding structure in Ti/C mechanically activated in H2 flow: The appearance of CH4 is a direct evidence of so-called active carbon formation [10].
According to electronic structure calculation [5], the occupation of octahedral interstitials of Ti by carbon atoms blocks the formation of further Ti-H bonds and the amount of bonded hydrogen does not rise further.
Effect of changes in local bonding structure on hydrogen desorption from Ti/C and Ti/B nanocomposites.
Online since: May 2004
Authors: M. Macchiarola, E. Bolognesi, P. Kotas, B. Fabbri
The results pointed out that the coeval architectonic structures of every site were built with bricks obtained by the same raw clays.
Their recognition is not always easy because of the superimposition of Ottoman structures [1,2].
In fact, Boukoleon is composed of Byzantine structures built during several centuries.
Probably this brick was re-employed from a more ancient architectonic structure of the Great Palace.
Gualtieri: Origin of calcite in ancient ceramic materials in Proceeding 7 th Meeting "Syntheses and methodologies in organic chemistry", Bressanone 1996.
Online since: June 2011
Authors: Zhou Ling, Tao Yang, Fan Chao Meng, Lin Yi, Xiang Xian Zhang
These advantages make the pump easier to control and the structure more compact.
Mathematical Models Electric Double Layer (EDL).According to surface chemistry, most surfaces spontaneously acquire a finite charge density when in contact with an aqueous solution[7].In the case of contact between glass (or silica) and an aqueous electrolyte liquid, the glass surface becomes charged due to the deprotonation of surface silanol groups.
Fig.1 Schematic of the Structure of Electric Double Layer Governing Equations of Electroosmotic Flow.
Extruded bricks are adopted to generate mesh because the structure of microchannel is regular.
The porous media is housed within two acrylic structures and the two acrylic structures are sealed with glue.
Online since: October 2010
Authors: Su Su Gao, Shan Ting Li, Sha Sha Wu, Ting Xi Li, Peng Sui, Na Kong
Synthesis and molecular structures of TMCD derivatives.
Synthesis and molecular structures of hydrazine compounds.
Results and Discussion The chemical structures of the compounds were characterized by IR spectrometry, mass spectrometry and elemental analysis.
The phenomena was not supported by the LUMO-HOMO theory, we think it could be explained by the solid structure.
Chemistry Letters.
Online since: January 2014
Authors: De Cai Wang, Yun Xiang Song, Xia Guang Hu
The evaluation and indicators of early strength After paving and rolling of the CR mixtures,early strength is very important for opening traffic or overlay the upper structure layer as soon as possible that requires CR structure layer in a short time having a certain overall structural strength and good cohesive.The demand mainly relies on the formula design of emulsified asphalt,emulsified asphalt breaking control,physical chemistry of emulsified asphalt,on the basis of research results at home and abroad,combined with the engineering practice,the article do research from the following aspects.
Cohesion Test In order to simulate the bottom bending tensile stress of the CR structure layer under the action of  load and  evaluate the chemical coagulation effect and internal cohesive of CR mixture with emulsion asphalt, the method of cohesive test was adopted(Fig. 1).
l As for a1,it was discovered that the cohesive increase significantly as cement content  increase,but the raveling loss almost no change, which illustrate under the premise of good compatibility between emulsified asphalt and aggregate, cement can improve the overall strength of the mixture, but have no effect on the surface adhesion ,it can be concluded that on account of the cement hydration requires a certain amount of free water, that will also accelerate forming the strength of mixture, and the condensation of cement will be conducive to form a whole structure.
Engineering Validation In 2012, by reason of overload and overrun,there was a expressway(Fig.3) in Henan Province appeared different degree of  destruction,therefore,the road was reconstructed by expert consideration ,using 100% of the RAP in lower course(Instead of AC-25), the structure diagram was shown in Fig.4.After 3 days,paving and rolling with CR-a1 mixtures,the traffic was opened and conducted the next constructing procedure, test indicators on-site are shown in table 4.The results showed that the indicators can meet the specification requirements,and proved that  the early strength evaluation methods and indicators is feasible for the CR mixtures with emulsion .
Fig.3 The CR emulsion Construction site Fig.4 Pavement structure design of Huoerguosi-Lianyungang Expressway References [1] JTG F41-2008, Highway Asphalt Pavement Recycling Technology Specification [S]. in China