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Online since: October 2010
Authors: Udo Bakowsky, J. Schäfer, Michael Uhr, Heinrich Richter, Janine Tillmann, Guido Struckmeyer, Anett Sommerwerk
As a result, the extended DNA structure becomes condensed into sub-micron particles and is protected from physical and enzymatical degradation.
This ethidium bromide exclusion is strongly indicative for a collapse of the DNA structure into a more dense structure after charge compensation by the cationic carrier [1].
Several studies have shown that this arrangement effectively protects DNA against degradation [15,16] and that the surface chemistry of the complex is determined by an unchanged carrier molecule.
This reduction is likely to be due to the destabilisation of the lipoplex structure as observed by AFM.
Additionally complexes with a more flexible and elastic structure show better transfection efficiencies.
Online since: May 2014
Authors: Surendar Marya, K.P. Karunakaran, J.Y. Hascoet
) § Substrate temperature § Shielding gas flow § Post process treatment (HIP…) Input Materials · Substrate (Chemistry, microstructure, texture
· The contribution of substrate structure on the overall structure property relation
· Mechanical anisotropy along with structures in different regions of the deposit: close to substrate, middle and top of the deposit
· Establish methodologies in view of laser contours and sequences with critical focus on structure property relations.
Geometrical Characteristics and microstructure characterization of wall structures, Optics & laser Engineering 50 (2012), 1779-1784
Online since: July 2012
Authors: Yan Fang Zhao, Xiao Xue Liao, Ming Chao Luo, Shuang Quan Liao
Review on The Broken Three-dimensional Network Modification Methods of Waste Rubber Powder Mingchao Luoa, Xiaoxue Liaob, Shuangquan Liao and Yanfang Zhao College of Materials and Chemistry Engineering, Hainan University, Hainan China, 570228 aln_zjm@163.com, bliaoxx26@163.com Corresponding author.
According to extent of network structure damage, all methods are categorized into two groups that the first is the broken three-dimensional network which breaks network structure and transforms crosslinked rubber chains into small molecular weight fragments and the second is the unbroken three-dimensional network which doesn’t destroy network structure.
Scuracchio[24] uses thermogravimetric analysis to understand the material structure changing during treatment.
To understand microbial desulfurization mechanism, dibenzothiophene(DBT) as a model molecule is used to predict the surface chemistry of WRP devulcanization process.
If WRP and the surface of WRP can be looked as core structure and shell structure respectively, the core structure can be modified by the broken network method.
Online since: November 2011
Authors: Yang Feng Huang, Ye Bin Cai, Hao Liu
The effects of glycine/metal ratio and calcination temperature on the powders phase structure, morphology and particle were investigated.
XRD results indicate that the as-prepared powders are crystallinzed in a single fluorrite structure.
All powders exhibited, as expected, a fluorite type crystalline structure, with the full incorporation of dopant cation in the crystalline lattice.
This very porous structure is typical of powders prepared by the combustion technique.
These characteristics (porous structure and friability) probably result from gases released by the redox reaction of glycine and metal nitrates.
Online since: January 2013
Authors: He Jun Li, Huan Xia Zhu, Ke-zhi Li, Jin Hua Lu
The structure and morphology of the SiC coating and as-received joints were analyzed by SEM and XRD; shear strength of joint was examined through the Instron universal testing tensile machine.
In the present work, SiC coating is prepared by two different methods (pack-cementation and CVD), and the crystal structure and microstructure of SiC coating are analyzed.
To analyze the microstructure and crystal structure of SiC coating and joint of C/C-LAS, JSM-6460 scanning electric microscopy (SEM) and X-ray diffraction (XRD) measurements were performanced.
Results and discussion Crystal structure and microstructure of SiC coating.
Journal of Solid State Chemistry. 183 (2010) 120-127
Online since: November 2010
Authors: Jian Sun, Yi Gui Li, Jing Quan Liu, Chun Sheng Yang, Dan Nong He, Thanh Dau Van, Katsuhiko Tanaka, Susumu Sugiyama
It is void-free structure in the interface of the PZT-Glass-Si structure.
The bond strength of the PZT-Au-Si structure was tested and the maximum value was 13.19 MPa when the bonding time was 60 min.
It is void-free structure in the interface of PZT-Glass.
Fig 4 shows the bond strength curves of the PZT –Au-Si structure after eutectic bonding at 500 oC.
Suga: Materials Chemistry and Physics.
Online since: October 2023
Authors: Lenka Nevřivová, Dorothea Sklenářová, Jana Majerová, Alice Kohutová
The Effect of the Gelling Agent on the Gelation Rate and the Formed Sol-Gel Structure SKLENÁŘOVÁ Dorothea1,a*, MAJEROVÁ Jana1,b, KOHUTOVÁ Alice1,c, NEVŘIVOVÁ Lenka1,d 1Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, 602 00 Brno, Czech Republic asklenarova.d@fce.vutbr.cz, bmajerova.j@fce.vutbr.cz, ckohutova.a@fce.vutbr.cz, dnevrivova.l@fce.vutbr.cz Keywords: Colloidal silica, Sol-gel processes, Gelling agent, SiO2, Al2O3 Abstract.
In this paper a combination of colloidal silica and different gelling agents are studied in order to observe the effect of gelation rate on the formed sol-gel structure.
The internal structure of the sol is formed of a siloxane (-Si-O-Si-) network, and its surface layer is covered with many hydroxy groups (-OH) and silanol groups (-SiOH).
The resulting structure has high porosity and permeability, and thanks to rapid and uniform drying, the risk of cracking and explosive flaking is reduced.
Iler, The chemistry of silica: Solubility, Polymerization, Colloid and Surface Properties and Biochemistry of Silica, Wiley-Interscience, New York, 1979, ISBN 978-0471024040
Online since: August 2009
Authors: Li Hua Dong, Yun Zhou, C.M. Liu
China 2 Department of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074; P.
Elemental analysis, IR and NMR spectra clearly confirm that the monomer synthesized herein is consistent with the proposed structure.
The structure of the polymer was confirmed by IR and 1H NMR spectra.
As we known, Heating of OLEDs would change the structure and function of luminescent materials.
The structure of the monomer and polymer was well identified.
Online since: September 2014
Authors: John L. Jorstad, Alois Franke
SEM eutectic Si structure in a squeeze cast A356 alloy (left) compared to that of rheocast A356.
Similarly, the alpha structure of different section thicknesses of HPDC MA-59 is compared to that of SSM product (Figure 3a and 3b) [3,5].
SSM clearly enhances MA-59 structure and properties, thus the uniquely-compatible THINCAST™ process + MA-59 alloy combination .
Rheinfelden’s patented THINCAST™ approach employs a mixing concept (Figure 5) that provides a very uniform chemistry, temperature and microstructure distribution in resulting slurry billets; to better understand that concept, we need only visit the issues of other rheocasting approaches.
Even thixocasting has issues with chemistry and microstructure consistency in cast product.
Online since: February 2013
Authors: K. Taibi, Lenuard Khaled, Osmane Khaled, Mohammed Azzaz, Lounis Azeddine
The surface organic structures were studied using a FTIR spectroscopy.
The surface organic structures were studied using a FTIR spectroscopy.
These results agree with the surface chemistry of other agricultural wastes [24-26].
High temperature (650°C) had caused some narrowing of pore structures [31].
Sémaoune, Asian Journal of Chemistry 2 (2009), p. 2293 [30] S.