Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: December 2010
Authors: Shu Fen Hu, Min Wei Wang, Bo Quan Jiang, Yu De Liu
The structure of the modified acrylate emulsion, measured by infrared spectroscopy, was proved to be a real silicate-acrylate copolymerization emulsion.
Analysis and measurement The structure of acrylic emulsion was measured by Fourier transform infrared spectroscopy (FT-IRS, made in America).
The emulsion structure was analyzed by Fourier Transform Infrared Spectrometer(BIO-rad, produced in America); The apparent viscosity of emulsion was determined at 25 ℃ by rotational viscometer (480KU, made in Changzhou, China).
Chemistry and Bonding Vol.28(2006),p.149 [10] Yu Wang,Shaoyi Qiu,Gaosheng Ding.
Online since: November 2010
Authors: Andrew John Ruys, Yu Jia Ma, Nicole S. Bryce, Trevor W. Hambley, Renee M. Whan, Kai Li, Philip Boughton, Lucy Xiao
In this preliminary study, Variotis™ synthetic scaffolds of high interconnected porosity and hierarchical structure were used.
These systems do not provide microscopic or macroscopic hierarchical structures, porosities, and perfusion as evident in tissue.
Microscopic and macroscopic pore structures have been incorporated, alongisde multiphase approaches to replicate tissue-like form.
Pore structure may also be used to modulate mechanical properties.
Matsumoto, et al., Bioorganic & Medicinal Chemistry, 2005. 13(21): p. 6064-6069
Online since: February 2016
Authors: A.V. Blagin, M.L. Lunina, A.G. Kozaeva
Thereby the development of the fundamental principles of the formation and services of solid-state structures is actual.
Reliable prediction of the emerging structure behavior and substructure materials for electronics and effective management in the technology of these materials at the micro- and nanoscale is possible only based on these solid-state structures describing above.
The foregoing representations allow us to formulate conditions of formation and practically implement the multilayer structures, i.e., structures with quantum wells and island films - prototypes of quantum dots by gradient liquid phase epitaxy.
Lunin, The Physics of Crystallization and Solid-State Structures of Defects at the Micro- and Nanoscale, UNC RAN.
"Solid State Chemistry: nanomaterials, nanotechnologies". (2012) 182-183
Online since: August 2007
Authors: Veneta Grigorova, Dimitar Roussev
As known [1] MTe2 powders are representatives of the CdI2 structure type.
Specific of lamellar structure is the strong ionicity of the bonds.
Briefly they exhibit: (i) true layered structure of CdI2 type; (ii) polymeric CdI2 structure with short Te - Te bonding contacts between two successive MTe2 slabs; (iii) real pyrite structures (MnTe2); and (iv) polymeric pyrite structures, in which (Te2) pairs are in interconnection via short Te - Te contacts.
As mentioned above, while subjected to high pressure CdI2 structure-type compounds can: (i) transform to 3D pyrite structure; (ii) rearrange the crystal cell but keeping 2D structure; and (iii) keep the same crystal cell arrangement.
David: J. of Solid State Chemistry, Vol. 89 (1990), p.315 [2] Whittingham, M.: Prog.
Online since: December 2015
Authors: Supakorn Pukird, Worasak Sukkabot, Suttinart Noothongkaew, Ki Seok An
The chemical states of the compositional elements in ZnO nanorod structures were characterized by the XPS as shown in Fig. 3.
The O1s peak was fitted with three Gaussian peaks, the dominant peak is located at the binding energy of 529.8 eV indicating that O2-ions in the ZnO are hexagonal wurtzite structure.
All diffraction peaks are corresponding to the hexagonal wurzite structure of ZnO (JCPDS No. 36-1451, a=0.324982 nm, c=0.520661 nm) [26-27].
All peaks are equivalent to the hexagonal ZnO with wurtzite structure.
Chu, Corrosion behavior of ZnO nanosheets on brass substrate in NaCl solutions, Materials Chemistry and Physics 115 (2009) 439–443
Online since: November 2014
Authors: Barbara Kucharska, Michał Krzywiecki
A correlation was discovered in the distribution of compression stresses and microhardness in the outer layer of the steel to a depth of 10 mm, where the role of plastic deformation in shaping the qualities of the steel outweighs the influence of structure content.
The stress profiles were compared with mechanical qualities of steels represented by microhardness and structure qualities represented by texture.
In deeper layers of steel, where the structure was dominant, this correlation has not been observed.
Bala, Chemistry of Materials, published by the Department of Materials Processing Technology and Applied Physics, Technical University of Czestochowa, Czestochowa 2001, in Polish [10] Ed. by T.
Online since: October 2011
Authors: Ching Wong Yee, Yun Hin Taufiq-Yap
Nanostructured of Vanadium Phosphorus Oxide (Vpo) Catalyst Prepared by Sonochemical Treatment YEE Ching Wong1,a and YUN Hin Taufiq-Yap2,b 1Faculty of Agro Industry and Natural Resources, Universiti Malaysia Kelantan, Locked Bag 36, Pengkalan Chepa, 16100 Kota Bharu, Kelantan Darul Naim, Malaysia. 2Centre of Excellence for Catalysis Science and Technology, Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia.
The surface morphologies of the catalysts are uniform, well defined shapes and surface structures in nano-scale range but tend to agglomerate with each other to form larger particles.
Result and discussions The diffractograms (Fig. 1) show the presence of (VO)2P2O7 phase in the structure, with the main reflection appeared at 2θ = 22.9°, 28.4° and 29.9° (JCPDS File No.: 34–1381) which representing the reflection of (020), (204) and (221) planes, respectively [4].
However for SRVPO240, its XRD patterns does not show the present of (VO)2P2O7 phase in the structure which further suggest that using the V2O5 which undergo the sonochemical treatment for 240 min as starting material to synthesis VPO catalyst is a prohibited method.
Online since: January 2019
Authors: Jun Lin Xie, De Fang, Hu Yang, Feng He, Xiao Qing Liu, Yun Lan Li, Wen Tao Zhang
The thermal properties of the modified BF slag and the structure of glass ceramics were investigated by differential scanning calorimetry (DSC), scanning electron microscope (SEM) and X-ray diffraction analysis (XRD).
The properties and structure of glass ceramics from modified molten BF slag were investigated by differential scanning calorimetry (DSC), scanning electron microscope (SEM) and X-ray diffraction analysis (XRD).
Effects of Fe2O3 on the crystallization and structure of CaO–Fe2O3–SiO2 glass ceramics[J].
Journal of Radioanalytical and Nuclear Chemistry, 2017, 314(3): 1619-1625.
Online since: January 2020
Authors: Yusril Yusuf, Almukarramah Almukarramah
Carbonate ion substitution in the hydroxyapatite crystal structure is known to decrease crystallinity and crystallite size.
Some characteristics of type B CHAp are (1) >1.67 molar ratio; (2) lower crystallinity than HAp; (3) decreases in crystallite size and increases in microstrain; (4) smaller particle size; (5) high solubility; (6) more bioactive than HAp based on in vitro test; (7) can dissolve in body psycho-chemistry; (7) resorbable to osteoclasts; (8) a- and c-axis lattice parameters decreases and increases, respectively [10, 11, 12, 13, 14].
Other information that can be concluded is that carbonate ion substitution in the HAp structure causes a decrease in crystallinity, agree with Ezekiel et al. (2018) [15].
The lattice parameter changes when the carbonate is substituted on the HAp hexagonal crystal structure, based on the ICDD-Grant-in-Aid PDF#090432, HAp lattice parameters are 9,418 Å and 6,884 Å for a and c-axis.
Online since: May 2011
Authors: Zhi Ming Tian, Qi Gang Deng, Le Yuan Li
Preparation of Sulfated Zirconia-modified Mesoporous SBA-15 and Catalytic Performance in Synthesis of Methyl Palmitate Zhiming Tian1,a, Qigang Deng 1,b, Leyuan Li 1,c 1College of Chemistry and Chemical Engineering of Qiqihar University,Qiqihar Heilongjiang 161006,PR.China atianzm@sina.com l, bdqigang@163.com, cleyuan_101@163.com Keywords: SBA-15, ZrO2/SO42-SBA-15, catalyse, methyl palmitate Abstract.
XRD results exhibit that ZS/SBA-15 remains the highly order mesoporous channels with hexagonal structure.
It can be seen that the highly ordered 2D-hexagonal P6mm structure has been successfully obtained.
ZrO2/SBA-15 and SZ/SBA-15 show typical type-IV isotherm with H1 hysteresis loop, which indicates that these materials possess mesoporous structure.