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Online since: February 2012
Authors: Bing Guo, De Qi Ren
The system consists of AD590 temperature sensor and virtual instrument, and the properties and structure of AD590 is discussed in this paper.
The structure and soft system of the virtual instruments system are designed and a high value measurement system is achieved using the resources of the virtual instruments.
Computer and Applied Chemistry. 2005;22(11):1055–1058
The structure and soft system of the virtual instruments system are designed and a high value measurement system is achieved using the resources of the virtual instruments.
Computer and Applied Chemistry. 2005;22(11):1055–1058
Online since: July 2016
Authors: Zhen Xiang Xin, Zhen Xiu Zhang, Xian Hua Lang, Peng Luo, Zhen Guo Ma
The biodegradable PLA/PPC composite foam showed a controlled structure of microcellular and nanocellular.
Introduction Poly(lactic acid) (PLA) is an example of a promising biopolymer prepared through a combination of biotechnology and chemistry.
Then foam structure was allowed to full growth during rapid depressurization.
All PLA/PPC composite foams exhibit a nice closed-cell structure except neat PLA and PLA/PPC (50wt %) composite.
So, PLA/PPC composite foams show open cell structure (Fig. 2) at high foaming temperature.
Introduction Poly(lactic acid) (PLA) is an example of a promising biopolymer prepared through a combination of biotechnology and chemistry.
Then foam structure was allowed to full growth during rapid depressurization.
All PLA/PPC composite foams exhibit a nice closed-cell structure except neat PLA and PLA/PPC (50wt %) composite.
So, PLA/PPC composite foams show open cell structure (Fig. 2) at high foaming temperature.
Online since: January 2017
Authors: Bo Wen Cheng, Hao Liu, Li Li Zhu, Yan Fang Xu, Xu Jie
To obtain ordered PAA with tailor-made internal pore structures, Lee and co-workers [4] have develpoed an approach for continuous modulations of internal pore structure of PAA by pulse anodization (PA) of aluminum under a potentiostatic condition using sulfuric or oxalic acid solution.
The nanoporous structure of PAA is a key parameter to design and produce a broad range of nanostructure with exquisitely designed properties.
So we can confirm that the nano-pillars on PMMA membrane have the mid-hollow structure, obviously, solvent volatilization is the main reason of mid-hollow structure and pores formation of nano-pillars.
Jia, High-filed anodization of aluminum in concentrated acid solutions and at higher temperatures, Journal of Electroanalytical Chemistry. 673 (2012) 24-31
Bruening, High-capacity, protein-binding membranes based on polymer brushes grown in porous substrates, Chemistry of Materials. 18(2006) 4033-4039
The nanoporous structure of PAA is a key parameter to design and produce a broad range of nanostructure with exquisitely designed properties.
So we can confirm that the nano-pillars on PMMA membrane have the mid-hollow structure, obviously, solvent volatilization is the main reason of mid-hollow structure and pores formation of nano-pillars.
Jia, High-filed anodization of aluminum in concentrated acid solutions and at higher temperatures, Journal of Electroanalytical Chemistry. 673 (2012) 24-31
Bruening, High-capacity, protein-binding membranes based on polymer brushes grown in porous substrates, Chemistry of Materials. 18(2006) 4033-4039
Online since: November 2011
Authors: Ning Liu, Li Hua Liu, Ying Bai, Fu Min Wang
It was found that all the lytropic liquid crystal were in lamellar liquid crysal phase and after casting the micro-structure of the LLC phase, the TiO2 samples were self-assemble to form lamellar, sphere and rod structures.
This shows that the lamellar liquid structure is retained after substituting TiOSO4 solution for water.
TiO2 particles from different water layers packed together and formed the lamellar structures.
The reason for the rod-like structure was because after the formation of the TiO2 nanoparticles in the lamellar liquid crystal, the nanoparticles formed rod-like structure by self-assemble under the help of surfactant.
Stupp: Chemistry of Materials.
This shows that the lamellar liquid structure is retained after substituting TiOSO4 solution for water.
TiO2 particles from different water layers packed together and formed the lamellar structures.
The reason for the rod-like structure was because after the formation of the TiO2 nanoparticles in the lamellar liquid crystal, the nanoparticles formed rod-like structure by self-assemble under the help of surfactant.
Stupp: Chemistry of Materials.
Online since: November 2011
Authors: Qing Li Ren, Qiang Luo, Yan Hong Hou
Despite its simple structure, its physical properties remain unexplored—in fact even its crystallographic symmetry has not yet been fully established [17], although the question of its structure has been addressed several times in the past [7, 13–16].
Fig.1 Cell Structure of Mg(OH)2 The crystal lattice of magnesium hydroxide is a simple, layered, hexagonal structure with layers of magnesium interlaced with layers of hydroxyl groups.
However, the theory calculation of magnesium hydroxide about its electronic structure and optical properties remains unexplored.
And the dielectric function e(w) is a bridge between physical transmit processing among bands and electronic structure of solid.
Megaw: Crystal Structures: A Working Approach (Philadelphia: WB Sanders, 1973) [21] J.B.
Fig.1 Cell Structure of Mg(OH)2 The crystal lattice of magnesium hydroxide is a simple, layered, hexagonal structure with layers of magnesium interlaced with layers of hydroxyl groups.
However, the theory calculation of magnesium hydroxide about its electronic structure and optical properties remains unexplored.
And the dielectric function e(w) is a bridge between physical transmit processing among bands and electronic structure of solid.
Megaw: Crystal Structures: A Working Approach (Philadelphia: WB Sanders, 1973) [21] J.B.
Online since: January 2013
Authors: An Chun Cheng, Ming Shu Wang, Dan Dan Shen
Discuss
To date, the specific structure and function of the outer membrane efflux protein in RA are unknown.
The function of a protein was fundamentally depends on its special structure, so it was very important to expore the special structure of the protein.
From secondary structure in fig 5, we can see that Alpha helix(Hh) accounts for the largest proportion in the outer membrane efflux protein, which was coincident with the general structure of the outer membrane efflux protein family[10].
In conclusion, we analyzed structure, function and homology of the outer membrane efflux protein gene of RA.
Walmsley: Journal of Biological Chemistry Vol. 280(2005), p. 15307-15314 [12] L.
The function of a protein was fundamentally depends on its special structure, so it was very important to expore the special structure of the protein.
From secondary structure in fig 5, we can see that Alpha helix(Hh) accounts for the largest proportion in the outer membrane efflux protein, which was coincident with the general structure of the outer membrane efflux protein family[10].
In conclusion, we analyzed structure, function and homology of the outer membrane efflux protein gene of RA.
Walmsley: Journal of Biological Chemistry Vol. 280(2005), p. 15307-15314 [12] L.
Online since: December 2023
Authors: S. Gowtham Sanjai, R. Thejaraju, Sudharshan Pradhann, Ashutosh Kumar, Shaik Abdul Zubair, Ranjan Kathuria, Leslie Samuel
Developing new crystal structure material changes the properties of its previous form.
There are lots of processes for the synthesis of nanoparticles, but the most used method is the wet chemistry method.
Phase structure by X-Ray diffraction (XRD) XRD is a technique for determining a material’s crystal structure; it allows for the verification of a sample’s crystallinity and phase structure but provides no chemical information.
Phase structure Fig. 7.
The results for Batch - 1 had Brookite and the Batch - 4 results had Anatase and Rutile structure.
There are lots of processes for the synthesis of nanoparticles, but the most used method is the wet chemistry method.
Phase structure by X-Ray diffraction (XRD) XRD is a technique for determining a material’s crystal structure; it allows for the verification of a sample’s crystallinity and phase structure but provides no chemical information.
Phase structure Fig. 7.
The results for Batch - 1 had Brookite and the Batch - 4 results had Anatase and Rutile structure.
Online since: October 2022
Authors: Radomír Sokolař, Tomáš Opravil, Martin Nguyen, Martin Sedlačík
Subsequently, samples fired at 850 °C (Fig. 5b, e) exhibit optimal porous structure.
The pretreatment temperature was also important for the porous structure to form.
Sample with no pretreatment fired at 800 °C is very dense and the porous structure is not developed.
The optimal porous structure was achieved in samples fired at 850 °C at both pretreatment options.
Yatsenko, Analysis of Influence of Foaming Mixture Components on Structure and Properties of Foam Glass.
The pretreatment temperature was also important for the porous structure to form.
Sample with no pretreatment fired at 800 °C is very dense and the porous structure is not developed.
The optimal porous structure was achieved in samples fired at 850 °C at both pretreatment options.
Yatsenko, Analysis of Influence of Foaming Mixture Components on Structure and Properties of Foam Glass.
Online since: July 2011
Authors: Guang Feng Wu, Xiao Bin Zhang, Wei Wu
Micro- structure of the weld metal and the base material were both austenite, there was no regular weld junction dividing line between them.
Grain size number of TP347H was 7, and its solution treatment micro-structure was austenite and few carbide.
Micro-structure of Super 304H heat-resisting steel base material was austenite and few tiny second-phase particles, and there were twin crystal in crystal grain.
Uniform micro-structure, fine grain size could form tight passivity film and brings higher corrosion resistant capabilities [2, 3].
This was because that Cl- has higher penetrating capability in HCl solution and could permeate into tiny hole in passivity film and change its structure.
Grain size number of TP347H was 7, and its solution treatment micro-structure was austenite and few carbide.
Micro-structure of Super 304H heat-resisting steel base material was austenite and few tiny second-phase particles, and there were twin crystal in crystal grain.
Uniform micro-structure, fine grain size could form tight passivity film and brings higher corrosion resistant capabilities [2, 3].
This was because that Cl- has higher penetrating capability in HCl solution and could permeate into tiny hole in passivity film and change its structure.
Online since: December 2012
Authors: Jian Wu, Bin Xu, Bo Li, Jia Xuan Miao
The burner uses the structure of cylindrical pipe, which choose the Al2O3 material.
As the diameter of the ball changes, the porous media porosity also changes, which brings the variable pore structure in the experiment.
In this experiment, there are three different porosity structures, and the uniform porosity is as follows: 0.32 0.40 0.45.Two-stratified porous media structure was realized by dividing from the middle of the wall, and then filled with different diameter ball.
This paper has a study of three different two-stratified porous media structure.
As also Fig.3 shows,When the structure and gas flux do not change,the burning characteristics change after the variation of porosity.
As the diameter of the ball changes, the porous media porosity also changes, which brings the variable pore structure in the experiment.
In this experiment, there are three different porosity structures, and the uniform porosity is as follows: 0.32 0.40 0.45.Two-stratified porous media structure was realized by dividing from the middle of the wall, and then filled with different diameter ball.
This paper has a study of three different two-stratified porous media structure.
As also Fig.3 shows,When the structure and gas flux do not change,the burning characteristics change after the variation of porosity.