Search results

Advances in graphene for adsorption of heavy metals in wastewater Lingling Luo1, a, Xingxing Gu1, b, Jun Wu1, c, Shunxian Zhong1, d, Jianrong Chen1, 2 e* 1College of chemistry and life sciences, Zhejiang normal university, Jinhua, China 2College of geography and environmental sciences, Zhejiang normal university, Jinhua, China a334668199@qq.com, bgarygu2010@163.com, c695909017@qq.com, dshuxian@zjnu.cn, ecjr@zjnu.cn Keywords: graphene; adsorption; heavy metal Abstract.
Graphene for its unique physical structure, excellent mechanical, electrical and physical properties has been widely applied in nanoelectronics, microelectronics, energy storage material, composite materials and so on.
As a kind of nanometer materials, graphene is a fascinating new member of carbon materials with honeycomb and one-atom-thick structure, consisting of 2D hexagonal lattices of sp2 carbon atoms covalently bonded.

By performance test of vacuum plate glass after sealing, conclude the organizational structure of glass and welding agent junction is well.
(a) the longitudinal sectional view of the edge banding (b) the sectional view of the welding agent (c) A regional energy spectrum analysis (d) B regional energy spectrum analysis (e) C regional energy spectrum analysis Fig. 9 SEM test after high-temperature sealing Metallographic analysis of solder after sealing Solder and glass belong to different material categories, their performance and crystal parameters vary greatly, so it’s difficult to be guarantee the seal strength and sealing performance, it is also difficult to determine the mechanical properties, while metallographic reflects the basic mechanical properties of material, good metallurgical structure generally means excellent mechanical properties. 
Materials Analysis Chemistry[M].

In particular, the work [24] suggested the technology for reinforcing wooden structures, and the papers [25, 26] considered strengthening concrete and reinforced concrete structures with nano- and composite materials.
The authors elected not to describe the structure of the materials or to detail the material generation process.
Birgisson, Characterization of stripping properties of stone material in asphalt, Materials and structures. 46 (2013) 47-61
Smirnow, Bitumen-rubber composite binders for production of asphalt concretes, Russian Journal of Applied Chemistry, 84(11) (2011) 1983-1987
Shah, Viscosity prediction of fresh cement asphalt emulsion pastes, Materials and Structures. 50(1) (2017) 59

This paper introduces the structure and working principles of the automotive electronic throttle control system.
As the PID controller has advantages of a simple structure, easy adjustment of parameters, do not rely on the accurate mathematical model, so it is widely used in process control.
In the structure diagram of the system, considering the friction torque and the part of non-linear torque which the spring force generated as non-linear torque.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)

The absorption spectra show that the ceria nano particles have direct and indirect band gap structures.
CeO2 is a material having fluorite-type Fm3m crystal structure even with some Ce4+ replaced by Ce3+ ions [4].
Detailed lattice structure was obtained by transition electron microscopy (TEM, Tecnai G2 F30).
The peak around 230nm (Peak A) corresponds to the transition with the initial state of O 2p and the final state of Ce 5d/6s conduction band based on the electronic band structure of ceria [23], which agrees with the reported electronic band structures of ceria.
Chandra Bose, Effect of aluminium doping and annealing on structural and optical properties of cerium oxide nanocrystals, Journal of Physics and Chemistry of Solids, 70 (2009) 1443-1447

Effects of Passes on Equal Channel Angular Pressing of 6061 Aluminium Alloy Chaiyasit Banjongprasert1, a, Chonlada Domrong1 and Torranin Chairuangsri2 1Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Thailand 2Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Thailand Corresponding author: achaiyasit_au@yahoo.com Keywords: Equal Channel Angular Pressing, Aluminium Alloy, Electron Back Scatter Diffraction.
Equal channel angular pressing (ECAP) is one of severe plastic deformation (SPD) techniques that gives a high level of strain and eventually results in ultrafine-grained structure.

It can be produced in wide range of densities, crosslink densities and stiffnesses ranging from very soft to very hard structure.
Sandwich panels are often used in applications where weight-saving is critical, eg., in aircraft, portable structures and in sports equipment.
Cellular Solids: Structure and Properties Second Edition, Cambridge University Press.
[3] L.J.Gibson & M.Ashby,Cellular Solids Structure & Properties,Cambridge University.UK. 1998
Ionescu, Chemistry and technology of polyols for PU, Rapra Technology, UK. 2005

The structure of hydrocyclone and channel is of reinforced concrete, and its overall reconstruction would cost huge investment and long period.
However, since thickness of channel and hydrocyclone is limited, excessive reconstruction could damage stability of structure.
The third one is reconstruction model allowed by structure stability to analyze if the local rebuilding plan is feasible. 1.
Fig.4 On-site structure and reconstrctino structure of hydrocyclone Fig. 5 Velocity contour at water surface of DC Fig. 6 Velocity vector at water surface of DC 3.
Through the simulation of above three models, it’s clear about the cause of disordered flow in hydrocyclone and the feasibility of local reconstruction plan allowed by structure.

Below 768℃ it is body-centered cubic (bcc) structured α-Fe, from 768℃ to 912℃, it is bcc structured β-Fe, in the temperature range of 912℃ to 1400℃, it is face-centered cubic (fcc) structured, called γ-Fe. from the melting point of 1400℃ to 1527℃, it is bcc structure, called δ-Fe.
Fig. 2, 3 respectively show the lattice structure of β-Fe and γ-Fe.
Fig.2 Lattice structure of β-Fe (bcc) Fig.3 Lattice structure of γ-Fe (fcc) Fig.4 DSC curve of 100nm iron Fig.5 DSC curve of 200nm iron Fig.6 DSC curve of 300nm iron Fig.7 DSC curve of 500nm iron Before the experiment, the iron samples were loose powders, but after the experiment, it became a uniform film adhering to the inner surface of the crucible.
Somoriai, Chemistry in Two Dimensions: Surface, Cornell university Press, Ithaca, NY, 1981
Johnson, Structure, morphology and melting hysteresis of ion-implanted nanocrystals, Nucl.

Figure 1 shows the crystal structure of Na16Ti10O28.
Due to the layered Fig. 1 Crystal structure of Na16Ti10O28.
Na TiO6 like structure of Na16Ti10O28, it is easy to be hydrated in water.
It is seemed that the structure of Na16Ti10O28 was kept in water.
In results the frame-work structures were maintained sample B and C.