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Online since: September 2011
Authors: S. Ignatius Arockiam, S. Angappan, A. Visuvasam, V. Mani, John Berchmans
Mania aDepartment of Chemistry, St.
The XRD analysis shows that the synthesized crystals have the rhombohedral structure.
Their crystal structure consists of corner sharing BO6 octahedra with the A ion in a high co-ordination site (generally CN ~ 12).
LaNiO3 is a simple compound, where as the related high temperature superconducting materials have a complex chemistry with three or more different cations in the unit cell.
The XRD analysis confirms the compound has the rhombohedral structure.
Online since: October 2014
Authors: Cong Yan Chen, Guan Qun Yun, Rui Lan Fan
The structure of PFAM was characterized by FTIR, 1H NMR, and elemental analysis.
The loose and continuous carbonaceous structure is observed in the outer surface of the PU char (Fig. 4a).
Applied Organometallic Chemistry 1990;4:127
The preparation and structure of 1,4,5,6,7,7-hexachloro-2-endo-ferrocenyhydroxyl-3-endo-hydroxymethyl-5-norbornene.
Applied Organometallic Chemistry 1988;2:277
Online since: April 2020
Authors: Mahanim Sarif, Hamzah Fazlena, Ani Idris
Due to the robust structure of EFB, fractionation or pre-treatment process was introduced to the EFB structure in order to rupture the complexity of EFB.
Generally, cellulose structure was hindered by the lignin-hemicelluloses bonds.
The microwave pre-treatment process was able to break the bonds inside the structure and thus expose more cellulose structure which is good for further enzymatic process.
Berlan, Microwaves in chemistry: Another way of heating reaction mixtures, Radiat.
Mingos, The application of microwave in chemistry.
Online since: November 2014
Authors: Hadi Nur, Alias Mohd Yusof, Rusmidah Ali, Mohd Marsin Sanagi, Afrouz Baharvand, Sheela Chandren
To reveal the potential application of hollow TiO2 in analytical chemistry, the photocatalytic degradation of organochlorine pesticide, γ-lindane, (γ-HCH) using hollow TiO2 spheres was compared with commercial TiO2 particles.
The strong contrast between the dark edge and bright center indicates the hollow structure of the titania sphere.
X-ray powder diffraction (XRD) analysis was applied to examine the crystal structure of the TiO2 particles.
Fan, Fabrication of mesoporous core-shell structured titania microspheres with hollow interiors, Chem.
Lu, Mesoporous titania spheres with tunable chamber structure and enhanced photocatalytic activity, J.
Online since: August 2013
Authors: Katarína Zelová, Ludmila Fridrichová
In this article, to evaluate the influence of material structure on the creasing of textiles, an innovated method of recording the angle of recovery by a web camera was used, Fridrichová and Zelová [6].
Materials and Methods For the experimental measuring a set of materials Z1 – Z8 of different material structure was chosen.
Further, the results showed that the speed of recovery provides interesting information influenced both by the material structure and the structure of textiles.
The speed at all examined materials, regadless their material structure, was slowed down, see Fig. 4.
Fibre Chemistry, Vol. 32, No. 6 (2000). p. 444-446
Online since: September 2011
Authors: Song Li, Yuan Yuan Zhou
Since then, a great deal of efforts have been directed to the improvement of its structures and properties[2-3].
As we all know the zirconia (ZrO2) particles have commonly prepared by the method of chemistry precipitation, sol-gel, hydrothermal synthesis and microemulsion.
Nitrogen physisorption, electron microscope,particle-size analyzer were introduced to tested the structures of synthesized ZrO2 particles.
As can be seen that the adsorption-desorption Isotherms had obvious hysteresis loop belonging to the typical Ⅳisothermal, which indicated that there were pore structure inner the ZrO2 powder.
The Structure and Properties of Porous Materials [M], London: Butterworths, (1958)
Online since: October 2015
Authors: Gang Li, Jun Ting Yin
Numerical Simulation on Detonation Process in Variable-Section Charge under Condition of End-Point Detonation Model Jun Ting Yin1, a, Gang Li1, b* 1 Xi’an Modern Chemistry Research Institute, Xi’an, 710065, China a1371965619@qq.com, bnpzk140@163.com Key words: detonation; charge; variable-section al; constraint; reflection wave Abstract: when detonation wave is spreading in cylindrical charge which has a shell constraint, the border of the shell will reflect the detonation wave, reflection wave still has a strong influence on charge’s centerline.
With the development of technology, the new type warhead such as , the focusing warhead that has a ability of fragment focusing and the flying angle controllable fragment warhead began to research and get a application, variable-section charge’s structure is the structure basis of ensuring this warhead’s controllable ability to the penetrators, but concerns to the spread and role form of variable-section charge’ detonation wave is less, the design support of new type warhead is insufficient .
The shell structure of three typical section shape charge is showing on fig 1.
Fig.2 Detonation wave pressure-cloud in equal-section charge Fig.3 Detonation wave pressure-cloud in decreased-increased section charge Fig.4 Detonation wave pressure cloud in increased -decreased section charge Knowing by contrast, in the charge structure which the increased-decreased section is changing, due to the ends of the shell are moving opposite, the equatorial plane of the shell is easy to be broken, leading parts of detonation energy loss, in three kinds of structure forms, the charge structure shell which the section is reduced - increased changing that has a maximum radial constraint of detonation products.
As shown in fig5 (b), in decreased-increase section charge, the reverse flow speed peak of sampling-point 1 is the minimum in these three kinds of charge structures.
Online since: January 2013
Authors: Cheng Zhong Chi, Ying Chao Liu, Jin Bo Xue, Wei Liang, Guang Liang Li
Study on Structure and Photocatalytic Properties of Cu2O Nanocrystal Synthesized by Low temperature Liquid-Phase Method Your Paper's Title Starts Here: Please Center use Helvetica (Arial) 14 Yingchao LiuFULL First Author1, a, Jinbo Xueb, , Chengzhong ChiFULL Second Author2,bc*, and Wei LiangLast Author3,dc and Guangliang Lie 1College of Materials Science and Engineering, Taiyuan University of Technology, TaiYuan 030024, China.Full address of first author, including country 2Full address of second author, including country 3Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology, Ministry of Education), Taiyuan 030024, China.
Huang group reported the synthesis of single scattered cuprous oxide nanocube through the templates in solution, with the size region in 40-420nm; the other is to prepare metal semiconductor core-shell structures, in which Au-Cu2O core-shell structure and Cu2O-Cu2S semiconductor core-shell structure were reported recently. 7-10.
Journal of Solid State Chemistry. 184 (2011) 2209-2214.J. van der Geer, J.A.J.
Synthesis of quasi-1D cuprous oxide nanostructure and its structural characterizations Journal of Physics and Chemistry of Solids. 69 (2008) 1718-1727
Synthesis of Submicrometer-Sized Cu2O Crystals with Morphological Evolution from Cubic to Hexapod Structures and Their Comparative Photocatalytic Activity.
Online since: September 2011
Authors: Lian Qing Zhu, Xin Zhen Yue, Yun Xiao Na, Qing Shan Chen, Hao Meng
The system principle, the overall structure of the system, the control structure of the key functional blocks and the flow chart of the software are given.
In recent years, as an analytical technique CLIA has become a very active research focus in clinical chemistry, medical equipment and environmental analysis [1].
And the development of modular, the micro biological and the chemical equipments have greatly enhanced the efficiency of clinical chemistry.
System structure and function block diagram are shown in Fig. l.
The main software structure diagram of control system is shown in Fig.4.
Online since: July 2011
Authors: Zhu Mei Wang, Run Hua Liao, Yue Ming Li, Zong Yang Shen, Yan Hong
SrTiO3 has cubic crystal structure at room temperature and exhibits paraelectricity [7].
The breakdown strength of the dielectrics is affected by density, grain size and defects structure [24].
Defects structure has also great effect on the breakdown strength in NdxSr1-xTi1-x/4O3 ceramics.
Vilarinho, Scandium doped strontium titanate ceramics: structure, microstructure, and dielectric properties, Bol.
Takagi, Grain-boundary chemistry of barium titanate and strontium titanate: II, origin of electrical barriers in positive-temperature-coefficient thermistors, J.