Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: August 2021
Authors: Lyubov Morgun, Vladimir Morgun, Denis Votrin, Viktor Nagorskiy
Dispersed reinforcement of foam concrete with polypropylene fibers leads to the appearance of a certain amount of the cement stone in the structure (Apex 5; Fig. 1B) of the mineral foshagite (4СаО∙3SiO2∙H2O), which has a fibrous structure, density 2,36…2,73 g/cm3[21] and high hardness at the atomic level.
Vovk, Hydration of C3S and the structure of the C-S-H-phase: new approaches, hypotheses and data, Cement and its application. 3 (2012) 89-92
Sharnina, Physics and chemistry of fiber-forming polymers, edited by B.N.
Fadeeva, Formation of the building materials plastic pastes structure during machine processing, Stroyizdat, Moscow, 1972
Vasin, Basics of adhesion of polymers, Chemistry, Moscow, 1969
Online since: August 2014
Authors: Zhong Zhong, Chi Zhang, Yi Jian Feng, Lu Sun, Lu Qi
Volcanic rock, an adsorbent with porous structure and large surface area, was applied for phosphorus removal in wastewater.
Volcanic rock materials have very good adsorption capability due to their porous structure and large surface area.
Gerhard, Layered double hydroxide ion exchangers on superparamagnetic microparticles for recovery of phosphate from waste water, Journal of Materials Chemistry A, 1 (2013) 1840-1848
Ahmed, Modeling of iron adsorption on HTTA-loaded polyurethane foam using Freundlich, Langmuir and D-R isotherm expressions, Journal of Radioanalytical and Nuclear Chemistry, 211 (1996) 283-292.
Online since: September 2017
Authors: V.D. Tukhareli, A.V. Tukhareli, Tatiana F. Cherednichenko
That will make it possible to use the modified formulations in the field of hydraulic structures [15, 19].
At the same time aggressive medium concentration versus actual compositions was controlled because its concentrating can cause distortion of the corrosion chemistry and lead to erroneous conclusions.
For instance, in non-pressure underground and underwater structures, as well as in water-saturated ground structures, transferring corrosive substances of diffusion type prevails, which is the common case in concrete corrosion.
Warren, New smart materials and structures, Publishing house "Technosphere", Moscow, 224 (2006)
Hong, Chemical admixtures - Chemistry, applications and their impact on concrete microstructure and durability, Cement and Concrete Research, 78 (2015) 81-99
Online since: September 2013
Authors: Er Jun Kan
Electronic structures in LaTiO3/LaAlO3 multilayers Erjun Kan1,a 1 Key Laboratory of Soft Chemistry and Functional Materials (Ministry of Education), and Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P.
The instability of ideal structure is eliminated through first Jahn-Teller distortions.
Similar with the un-optimized structure, the anomalous stability of dxy is quite surprised.
(a) Ratio of Lap/La in different structures, Uo means un-optimized structure, Op represents optimized structure, C3 and C5 indicates the optimized structure under compressing with 3% and 5%, respectively.
(c) Spin density plots of Uo, Op, and C5 structures.
Online since: July 2012
Authors: De Wen Seng
Due to the unique properties of nanosized materials and broad application prospects, its structure and properties has become the focus of materials science, physics and chemistry, and other cross-disciplinary research [3].
It uses a solid theory predicts the structure and properties of nanosized materials.
Quantum mechanics is the only theory able to predict the phase structure and stability [7].
The simulation of the structure and the performance of nanosized materials The structure of nanosized materials is of grain, amorphous and quasi-crystalline particles, such as principal component and interface main structural analysis is to describe the nanocrystalline phase structure, interface structure and defect types and quantities [11].
Micromagnetic simulation of structure property relations in hard and soft magnets.
Online since: December 2014
Authors: Ekaterina Nosova, Antonina A. Kuzina, Anna V. Kuts
One way to control the structure of alloys and improve their properties is their modification.
Panfilov, On the influence of modification by nanodimensional refractory particles on the structure and properties of aluminum matrix composites.
Glass Physics and Chemistry. 31 (2005) 337-339
Physics and chemistry of materials processing. 6 (2010) 51-55
Krushenko, The role of particles of nanopowders when forming structure of aluminum alloys.
Online since: June 2012
Authors: Jing Liu
A Study of the Optical Properties of Triazene-Cinnamic acid Polymeric Fluorescent Brighteners Jing Liu College of Chemistry and Engineer, Xianyang Normal University, Xianyang 712000, China liujing163 @163.com, Keywords: Polymeric Fluorescent Brighteners, Optical Properties, Photoinduced Isomerization, Cinnamic Acid.
The basic structure of chromogen in PFBs remains the same, so PFBs have fluorescent properties of traditional FBs.
Derivatives of triazene-cinnamic acid polymeric fluorescent brighteners with the structure presented in Scheme 1 were studied, the structure of substituents R were shown in Table 1.
Table 1 The structure of substituents R FBs -R 1 -N(CH2CH3)2 2 -N(C2H4OH)2 3 –Morpholino 4 aniline Scheme 1 Molecular structure of PFBs Spectral characteristics of Polymeric Fluorescent Brighteners UV-vis spectrophotometric investigations of the prepared products of FBs1~ FBs 4 and PFBs1~ PFBs 4 using aqueous and N, N’-dimethyl formamide (DMF) as solvent were performed on a spectrophotometer and fluorescence test on a spectrofluorometer at room temperature.
Journal of Photochemistry and Photobiology A:Chemistry.
Online since: June 2008
Authors: Katalin Papp, Ágnes Csanády, Gyula Kakuk, István E. Sajó, Hajnalka Hargitai, Péter Németh, Anna Sztaniszláv
The influence of high-energy ball milling parameters on the traditional W-type Ba-hexaferrite properties Gyula Kakuk1,a , Ágnes Csanády 1,b, István Sajó 2,c, Katalin Papp 3,d , Péter Németh 3,e, Hajnalka Hargitai1,f , Anna Sztaniszláv 4,g 1 Bay Zoltán Public Foundation, Institute of Materials Science and Technology, Fehérvári st. 130; H-1116 Budapest; Hungary 2 Institute of Structural Chemistry, Chemical Research Center of the Hungarian Academy of Sciences, Pusztaszeri st. 59-67; H-1025 Budapest; Hungary 3 Institute of Surface Chemistry and Catalysis, Chemical Research Center of the Hungarian Academy of Sciences, Pusztaszeri st. 59-67; H-1025 Budapest; Hungary 4 TKI-Ferrit Ltd., Ungvár st. 64-66; H-1142 Budapest; Hungary a kakuk.gyula@gek.szie.hu, bcsanady@bzaka.hu, csajo@chemres.hu, dpapp@chemres.hu, e peter.nemeth@chemres.hu, fhargitai@bzaka.hu,g sztanisz@tki-ferrit.hu Keywords: High energy ball milling (HEBM), W-type Ba-hexaferrite
In order to obtain the desirable nanostructural properties, (homogeneous metals, alloys, ceramics and composites with fine subgrain structures, etc.) not only the milling parameters, but the type of the starting materials can be selected and it may influence the experimental results.
Characterization of the atomic structure, morphological features, thermal behaviour and magnetic properties were carried out.
Atomic structures of the powders and of the compacted samples were investigated by X-ray Powder Diffraction technique (Philips PW 105, Cu Kα 40kV, 35 mA, Scherrer method).
X-ray diffraction pattern and TEM micrograph of high-energy milled (8h/370W) presintered sample (crystallite sizes of M-type Ba-ferrite ~ 20 nm) The structure of the M-type hexaferrite can also be verified on the high resolution transmission electron microscopy (HRTEM) image.
Online since: June 2014
Authors: Xi Hong Yang, Wan Cui Xie, Hong Wei Wu, Fu Rao Lai, Hui Wu, Dong Wei Cheng
Studies have shown that the molecular structure of metal chitosan chelates has preferential conformation and facilitates the rupture of the molecular chain[2].
In addition, the semi-cellulase ruptured the chitosan molecular chains at the copper coordination node or the weak structure around the node, and thus the oligochitosan with relatively homogenously distributing molecular weight.
The coordinate chemistry explains, the structure of polymer chains and The molecular packing have changed by organic polymer translate into metallo-organic compound, forming a privileged structures is beneficial to the degradation[11].
When the chelation reaction conditions changed, the groups participating in the coordination reaction varied, the obtained chitosan–metal chelate structure varied, and the difference in the structures determined the degradation level difference.
Chitin Chemistry.
Online since: June 2014
Authors: Ayham Younes, Iris Käppler, Georg Bardl, Chokri Cherif
Both fibre types differ in the inner structure, glass fibres (GF) are defined by an amorphous structure and carbon fibres (CF) by an anisotropic graphite lattice [3].
In general, the surface chemistry of CF is often driven by the applied sizing.
This binder can be implemented with the developed technology to achieve the desired structures.
Sitzung der Arbeitsgruppe „Werkstoff- und Bauteilprüfung“, Faserinstitut Bremen, Augsburg, 05.03.2010 [3] Guigon, M., Oberlin, A., and Desarmont, G.: Microtexture and Structure of Some High Tensile Strength, PAN-Base Carbon Fibres, Fibre Science and Technology, Vol. 20 (1984), 55-72 [4] Krekel, G., Hüttinger, J., Hoffmann, W.
S.: The relevance of the surface structure and surface chemistry of carbon fibres in their adhesion to high –temperature thermoplastics, Journal of Materials Science, Part I Surface structure and morphology, Vol. 29 (1994), 2968-2980 [5] Boehm, H.