Search results

Abstract: The bonded structures in vehicles are usually in different enclosure conditions.
To understand the curing of the bonded structures, it is important to get insight into the structure temperature distribution and the adhesive temperature history in the curing process.
The bonded structures in vehicles are usually in different enclosure conditions.
The closed enclosure can prevent the heat absorption of the bonded structures in the curing process, which leads to a different thermal history compared with the structure in a fully exposed condition.
Radiation Physics and Chemistry Vol.14(1977) :P699

The calculated estimation is carried out for one of the structures of cycloaliphatic epoxy resin.
The chemical structure of these components is shown below: As shown in [5], this epoxy resin cures with the formation of three structures.
This table shows the selected structures and temperatures of the onset of intense thermal degradation Td of a set of selected structures.
Basic structures identified sequentially in the computer program "Cascade", and temperatures of the onset of intense thermal degradation Td of the isolated structures.
Zaikov, Modern tendencies in organic and bioorganic chemistry.

The obtained LLCs were characterized by XRD and SEM in order to analysis the texture, structure and the transformation.
However, the photocatalytic efficiency of TiO2 is greatly influenced by particle scale, crystal structure, surface area and porosity [13-14].
And from the Fig.1.it was found that LLCs with different component concentration of materials could result in different LLCs phase structure.
The sample of TiO2 exhibited pure anatase structure (JCPDS-86-1157), matching very well with the specification of the product.
Memming, Journal of Physical Chemistry 100 (1996) 13061-13078

Results and Discussion Fig.1 shows the crystalline and crystallographic phases of the structures.
This result is possible due to Mg merging onto the Zn lattice [2, 13] with no change of the structure of ZnO wurzite.
The differences are possibly due to the different O and Zn treatment in the ZnO structure [14].
It can be concluded that Mg2+ ions are incorparate into the ZnO lattice with the formation of a Mg-doped ZnO structure without changing the ZnO structure [2,11,16].
Inorganic, Metal-organic and Nano-metal Chemistry, 40 (2010) 190-194

Synthesis of Copper Nanospindles and Microflowers via a Surfactant-assisted Hydrothermal Process Jun-jie JING1,a, Ji-min XIE1,b, Gao-yuan CHEN1,c, Wen-hua LI1,d and Ming-mei ZHANG1,e 1School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.
Spindle-like Cu crystals were synthesized when F-127 was used as surfactant, while flower-like structures were obtained if F-127 was substituted by CTAB.
All the diffraction peaks can be indexed orderly to Cu (111), (200), (220) planes of the face-centered cubic structure of Cu (PDF card NO. 04-0836).
Size and Structure.
SEM image shows that the spindle-like structures with a length of about 200-300 nm and a width of about 80-100nm (Fig. 3 (a-b)).

The above observations suggest that the liquid crystallinities (nematic and smectic), and hence the thermal behavior, of SCLCPs depend not only on the chemical structures of the side-chain LC monomers but also on the length of flexible spacer groups [4].
While detailed studies on the thermotropic properties of side chain LC copolymers containing azobenzene mesogens of various chemical structures synthesized by random copolymerization have been systematically reported [5-7].
It is shown that the LC property depends strongly on various factors such as the molecular structure of azobenzene moiety, the spacer length, and the molecular weight.
Structure of ABA-Type Triblock Copolymers Experimental Section Materials.
The resulting copolymers show well-defined structures and comparatively low polydispersities (<1.3).

The most common method used to produce these structures in metal matrix-ceramic reinforcement systems is infiltration of pre-existing reinforcing porous preforms with molten metal [2].
The preforms are required to be structure of uniform spatial distribution of pores with desired sizes.
Generally it is very difficult to produce the structure with extremely small pores (submicron and/or nano pores).
This layer shows a porous state and very fine-grained network structure.
As shown in Fig. 3 (b) TiB2 skeleton remains very fine-grained structure with the particle size of less than 100nm.

How Electrophoretic Deposition with Ligand-Free Platinum Nanoparticles Affects Contact Angle Alexander Heinemann1, a, Sven Koenen1, b, Kerstin Schwabe2, c, Christoph Rehbock1, d and Stephan Barcikowski1, e * 1Technical Chemistry I, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitaetsstr. 7, 45141 Essen, Germany 2Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany aalexander.heinemann@stud.uni-due.de, bsven.koenen@uni-due.de, cschwabe.kerstin@mh-hannover.de dchristoph.rehbock@uni-due.de, estephan.barcikowski@uni-due.de Keywords: electrophoresis, bare, colloidal, surface structuring, contact angle, laser, implant Abstract: Electrophoretic deposition of ligand-free platinum nanoparticles has been studied to elucidate how wettability, indicated by contact angle measurements, is linked to vital parameters of the electrophoretic deposition process.
In this context, surface structuring with noble metal nanoparticles is a promising process which can be used to influence the impedance as well as the wettability of the respective surface [3].
Agglomerated particles could lead to the deposition of islands instead of single particles on the surface, which could alter the surface structure and influence the contact angle in an unpredictable fashion.
Whether this is an advantage or has to be avoided during the structuring of neural electrodes for Parkinson’s disease treatment has to be verified by following in vivo tests.

Synthesis of AM-co-NVP and thermal stability in hostile saline solution Rui Liu1,a, Wan Fen Pu1,b , Qin Peng2,c , Feng Sheng Yao1,d 1 Xindu Avenue No. 8, Zip Code: 610500, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, People’s Republic of China 2 Xindu Avenue No. 8, Zip Code: 610500, School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People’s Republic of China abreakthroughliu@yahoo.cn, bliurpengq@yeah.net, cbreakthroughliu@yeah.net, d675792114@qq.com, Keywords: copolymer preparation; structure characterization; thermal stability; brines solution.
The copolymer was characterized by its chemical structure with Fourier transform infrared spectroscopy (FTIR).
Also, much salinity was adsorption to the network structure resulting from the bridge effect between carboxyl groups and salt, boosting the risk of been attacked by divalent ions.
Without exceptional, co-3 (Fig. 4a) containing the favorable content NVP, has the least micro-structure changing.
Compared to co-1 (Fig. 4c) and co-2 (Fig. 4b), it exhibits more regular, intensive as well as rigid micro-network structure with less salinity adsorption.

In this present study, perovskite structured CaTiO3 nanomaterials have been synthesized by microwave irradiation method.
The XRD patterns confirm the presence of perovskite structure of the prepared nanomaterials.
In recent years, perovskite structured photocatalyst received remarkable interest due to their unique properties.
Crystalline structured perovskite type CaTiO3 showed remarkable photocatalytic activity.
The structural properties were analyzed by XRD which confirms the crystallinity and the formation of perovskite structure.