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Online since: September 2013
Authors: Shao Ming Wei
The reason why FRTP gets such a high speed development is that FRTP has more obvious advantages in the basic and process performance compared with FRSP: it has good toughness and heat resistance; it can be repeated or secondary operation, short production cycle, high production efficiency as the plasticizing process of thermoplastic resin is only a physical change, heating can occur deformation invariant in the molecular structure; excellent resistance to drugs, water resistance, radiation resistance and electrical properties; long storage period, good construction environment and so on [1-3].
At present, the company has produced a variety of thermoplastic pultruded products, example of concrete plate connector, reinforced concrete, building structure reinforcement, frame section, ladders, sledge levers, electrical equipment, fuel measuring device, fixture etc..
Reserch advanced in long glass fiber reinforced thermoplastic composites.Progress in Chemistry, 1995,( 2) : 1~9 [2]Wu jing.
Composite Structures, 2001( 54):355-360
FRP Structures and FRP Composite structures in structural Engineering . industrial building, 2005, 35( 3) : 56-70
Online since: March 2015
Authors: Hong Cheng Liu, Wei Jun Zhang, Xiao Chen Zhang, Qian Yu, Jue Wang
In this work we investigate the effects of substituting Bi for Y atoms by calculating the structure and the ferroelectric properties of the thin films.
The value is the basis of determining defects stabilityin defects chemistry. is super-cell free energy which contain corresponding defects.
Compared with the standard card of BTO, the films had a layered perovskite structure when the Y-substituted content x ranged from 0.5 to 1.5.
As shown in Fig. 1, it is observed that when the content x was 0.5 and 0.6, the films had a single perovskite structure.
It could be explained that the doped quantity of Y has no effect on material structure at present; whenx was 0.6, the characteristic peaks (004)(006)(008)(117) of layered perovskite structure were very clear and large diffraction peak intensity.
Online since: June 2015
Authors: Andanastuti Muchtar, Huda Abdullah, Savisha Mahalingam, Sahbudin Shaari, Izamarlina Asshari, Azimah Omar, Nurul Ain Md Nawi
Roughness on the surface of a thin film explains the structure of the film.
A good contact adhesion can be observed in Fig. 2 (b) between SnO2 and MWCNT causing SnO2/MWCNTs to be visible in porous structure.
This is due to the presence of stable MWCNT which showed less effect on the hybrid structure of SnO2/MWCNTs films.
Sunkara, Band-edged engineered hybrid structures for dye-sensitized solar cells based on SnO2 nanowires, Advanced Functional Materials 18 (2008) 2411-2418
Hupp, Surface modification of SnO2 photoelectrodes in dye-sensitized solar cells: significant improvements in photovoltage via Al2O3 atomic layer deposition, The Journal of Physical Chemistry Letters 1 (2010) 1611-1615
Online since: July 2015
Authors: Hui Li, Xuan Wang, Yong Zhu, Shao Jun Shi, Ning Yu, You Jian Wang
Principle and Model Because gold unit cell is face centered cubic (F.C.C.) crystal structure which consist of 4 gold atoms, the quality of a gold unit cell is 4 gold atomic weight, and the unit cell volume is ap3 (ap is the lattice constant of gold unit cell), then the volume of 1 molar gold atoms occuping is No ap3/4, and gold density can be obtained by the following Eq. 1
Due to gold, silver, and copper are F.C.C crystal structure, silver and copper atoms replaced respectively gold atoms and formed gold solid solution with F.C.C. crystal structure which changed lattice constant and quality.
Based on Vegard low [8] , the solid solution formed by components of same crystal structure is of a linear relationship as Eq. 3 between the lattice parameters and the components content.
TABLE 6.THE DATA BY EDXRF AND DENSITY TESTING AND FIRE ASSAY AND EQ. 14 Basic information Density EDXRF ax ×10-8 cm wp Cupellation wp─wAu No Name m(g) ρx (g/cm3) Ag(%) Cu(%) (%) wAu(%) (%) 1 Pendant 3.976 19.282 0.10 0.00 4.076 99.97 99.92 0.05 2 Necklace 7.639 19.222 0.40 0.00 4.076 99.70 99.62 0.08 3 Necklace 13.269 19.128 0.51 0.51 4.069 99.00 98.92 0.08 4 Necklace 12.649 18.944 1.00 1.00 4.062 98.13 98.04 0.09 5 Bracelet 10.239 18.594 1.96 2.04 4.048 96.13 96.03 0.10 6 Bracelet 10.586 17.897 4.00 4.30 4.020 91.86 91,74 0.12 Conclusion 1) Due to gold, sliver, and copper are F.C.C crystal structure, sliver and copper atoms replaced respectively gold atoms and formed gold solid solution (gold jewelry alloy) with F.C.C.crystal structure which changed lattice parameters and quality.
[3] Jurado López A., De Castro, M.D.Luque:Analytical and Bioanalytical Chemistry Vol.372 (2002), n 1, p 109-114
Online since: May 2014
Authors: Jung Hoon Sul, B. Gangadhara Prusty, Don W. Kelly, Shen Hin Lim, Garth Pearce
This paper presents a simulation framework to incorporate the effects of nano-modified polymer resins into the design of tailored fibre reinforced composites structure.
Real composite structures have very complex heterogeneous microstructures.
It is computationally intractable to calculate the local strain field in the (nano-filled) polymer resin for any engineering-scale structure.
In practice method three is the easiest to achieve for proprietary composite systems as detailed chemistry and good quality neat resin samples are difficult to acquire.
Kelly, Bearing Failure Prediction for Composite Pin-Loaded Holes and Bolted Joints Using Onset Theory, International Conference on Mechanics of Nano, Micro and Macro Composite Structures (ICNMMCS), 18-20 June (2012), Turin, Italy
Online since: July 2014
Authors: Xian Quan Jiang, Rong Jie Yang, Ai Min Jiang, Jin Yang, Rong Yu
The research development of one-dimensional nano- structured tungsten carbide is reviewed.
Because of its small size, one-dimensional nano-structured has good dimensional stability of thermodynamics[11].
Fig.1 SEM micrographs of the one-dimensionalnano structures 3 The growth mechanisms Nowadays, theories on VLS [19], VS [20] are often borrowed to explain the growth of one-dimensional nano materials.
Using XRD, Wang etal[7] analyzed the WCx films. the result to show: the growth of dense nanowires at 700°C, and the disappearance of nanowires at 750–800°C,carbon plays an important role in the growth and collapse of nanowires on annealed WCx films, the self-catalytic growth of W2C nanowires should be attributed to the formation of α-W2C structures caused by carbon depletion in the WCx films during thermal annealing, in addition, the collapse of W2C nanowires in samples annealed at temperatures 700°C is due to the nanowires experiencing a structure transformation from α-W2C(002)phase into grains of β-W phase. 4 Concluding remarks In recent years, as a one-dimensional material, nanostructure WC have become the focus of attention, with its good physical and chemical properties, WC will surely have broad applying prospects in the new nano-material field.
J Physical Chemistry B, 2005, 109(41): 19056- 19059
Online since: January 2022
Authors: Enche Ab Rahim Siti Kartini, Heymmela A.P. Kasi, Norazharuddin Shah Abdullah
The morphological analysis of the NaOH pretreated sugarcane bagasse showed that the fiber structure of the biomass was less rigid, fragmented, became rougher.
According to Pereira et al., [8], these findings could be due to the loosening of the fibrous structure after the acid hydrolysis.
As a result, the internal structure of the fiber becomes more exposed.
This result indicated that as the reaction time was increased, the diffusion of the acid into structures of cellulose and hemicellulose was also increased and eventually caused the physical swelling of the structures.
Basic of Chemistry.
Online since: October 2010
Authors: Jie Liu, Jun Jing Zhang, Sheng Juan Li, Shu Lin Wang, Lai Qiang Li
It proves the sodium oleate structure COO-(1600~1500cm-1, 1457~1390cm-1) has peak.
These data shows the structure of the magnetic fluids has not changed during the cladding of sodium oleate and SDBS.
Using TEM to inspect and analyze the structure and disperse condition in the particle.
Preparation, Structure, and Magnetic Properties of Polystyrene Coated by Fe3O4 Nanoparticles[J].
Chinese Journal of Inorganic Chemistry, 2003, 19(5):547 - 551
Online since: September 2006
Authors: Ayumi Dodomi, Jun Kuwano, Morihiro Saito, Toyoki Okumura
The perovskite structure of La0.56Li0.33TiO3 was built with a framework of corner-sharing TiO6 octahedra and the cations of La and Li in the 12-coordinate A-sites.
The optimized structure and the activation energy for the hopping of the Li ion through the bottleneck were calculated with the supercell.
Fig. 5 shows the structure of the LiLa5Ti8O24 cell after optimization with the DFT calculations.
Looking the trajectory carefully, we however notice that the position of the Li ion in the optimized structure corresponds to one case (marked by G) of the locations shown with the trajectories in Fig. 3.
Fig. 6 shows the distances of Li-On (n = 1-12) in the optimized structure in Fig. 5.
Online since: April 2004
Authors: Stepas Janušonis, Liudas Leonas
Indeed solar cells are spatial structures.
This cross-section must be selected to correctly represent essential geometrical characteristics of solar cell structure.
A new structure emerges – from two open grooves to one open and one closed groove system.
From Dissipative Structures to Order Through Fluctuations (M.: Mir, 1979), 512 p.
An Introduction to Non-Equilibrium Phase Transitions and SelfOrganisation in Physics, Chemistry and Biology (Springer Verlag, Berlin, 1978; M.: Mir, 1980) (in Russian)