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Online since: May 2016
Authors: Jian Li, Jiang Ping Sun, Yang Zhang, Chen Yi Wang, Qiang Ren
Synthesis of PBMA-b-PGMA block copolymers via ICAR ATRP and their application in polymer/titanium dioxide hybrid materials Jianping SUN Yang ZHANG Jian LI* Chenyi WANG Qiang REN Department of Materials Chemistry, Faculty of Materials Science and Engineering, Changzhou University, Changzhou, Jiangsu Province, 213164, China Email: lijian9@sina.com Keywords: ICAR ATRP; block copolymers; PGMA; polymer grafted nanoparticles; titanium dioxide.
The PBMA-b-PGMA block copolymers were successfully synthesized with controlled structure.
The crystal structure of the TiO2 nanoparticles did not changed after being grafted onto PBMA-b-PGMA block copolymer, as seen from XRD spectra in Fig. 6.
Online since: January 2009
Authors: Yu Fang, Xiao Dan Du, Xiao Ming Feng, Zhen Chen, Zhi Xiong Zhang, Ting Fei Xi
However, TEMPs are more complex than vaccine, especially in the multiplicity of skeleton components and structure.
Collagen scaffolds is one of the basic structure of acellular dermal matrix. [8-13] It was suspected to have some matrix effects of rhADM immersion on BSA detection by ELISA because poor relevance between the dilution and A450nm of the immersion can hardly be explained only by Hook Effect.
The Journal of Biological Chemistry. 276(2001), p. 29953-29960 This study was supported by National Nature Science Foundation of China (30670573).
Online since: April 2019
Authors: Abiodun Paul Olalekan, Adewunmi Oluwasogo Dada, Oghenerobo Benjamin Akpor, Oluwasola Oribayo, Bamidele Sunday Fakinle
Optimization of Lead Adsorption on Rice-Husk Supported Zerovalent Iron Nanoparticles Using Response Surface Methodology OLALEKAN Abiodun Paul1,a*, FAKINLE Bamidele Sunday2,b, DADA Adewunmi Oluwasogo3,c, AKPOR Oghenerobo Benjamin4,d and ORIBAYO Oluwasola1,e 1Department of Chemical and Petroleum Engineering, University of Lagos, Lagos, Nigeria 2Department of Chemical Engineering, Landmark University, Omu-Aran, Kwara State, Nigeria 3Department of Industrial Chemistry, Landmark University, Omu-Aran, Kwara State, Nigeria 4Department of Biological Sciences, Landmark University, Omu-Aran, Kwara State, Nigeria apolalekan@unilag.edu.ng, bxdales@yahoo.com, cdada.oluwasogo@lmu.edu.ng. dakpor.oghenerobor@lmu.edu.ng, ooribayo@unilag.edu.ng Keywords: Nanoscale zerovalent iron particles; Adsorption; Rice husk; Response surface methodology; Scanning electron microscope; Fourier Transform Infrared spectroscopy Abstract.
The SEM showed that RH-nZVI has a very porous surface structure.
Online since: November 2014
Authors: Shweta Arora, Deepika Bhatnagar, Vanish Kumar, Sukhbir Singh, Shriniwas Yadav, Inderpreet Kaur
Cell membranes act as barriers and allow only certain structures to pass which have the right hydrophilicity to hydrophobicity ratio.
· Nanotubes have needle like structure which ensures greater cell permeability. 3.
Fig. 1: Molecular structure of SWNTs (left), and MWNTs (right) To evaluate CNTs for drug delivery potential and biocompatibility, the first parameter of interest usually is particle size.
In addition of favorable size, CNTs have high aspect ratio, capsule like structure, easy penetration, easily modifiable chemistry at surface and excreted out of the body through urine. 4.
It has been found that not only DNA molecules can be linked to the tips and walls of f-CNTs, but also can be encapsulated inside the structure.
Online since: October 2023
Authors: Mohammad Masykuri, Arsy Rachma Zain
Coconut Shell Charcoal Combination with Teakwood Sawdust (CSC-TS): An Effective Low-Cost Adsorbent for the Removal Cr(VI) Ion on Industrial Waste Mohammad Masykuria* and Arsy Rachma Zainb Department of Chemistry Education, Faculty of Teacher Training and Education, Sebelas Maret University, Jl.
The resulting functional groups contribute to the process of widening the structure which ends in the formation of a porous structure that can be used as an active site after acid elimination (neutralization) [27], [28].
This washing aims to remove the activating agent and its salts, which make the pore structure available.
Because generally biomass such as wood and coconut shell cellulose is coated with lignin which strengthens the structure of the cellulose itself [37].
In TS, the heat given is relatively low at only 373 K so it is possible that it has not been able to damage the lignin structure because of the strong lignin bonds.
Online since: October 2010
Authors: Stefano Frangini, Angelo Moreno, Fabio Zaza
In general, short-term corrosion tests proved a satisfactory protective behavior of all the sol-gel coatings, although the corrosion scale of the coated steel continued to present the typical dual layer structure of the naked steel, irrespective of the coating type.
It is noticed a compact and sharp crystalline structure with large grains generally surrounded by smaller ones probably due to a Ostwald ripening mechanism.
Frangini, The Open Physical Chemistry Journal, 3 (2009) p.1 [26] S.
Online since: September 2013
Authors: L.K. Singhal
These were later designated as AISI 201 and 202 and contained minimum nickel content of 3.5% and 4% respectively During Korean war, on account of US Government restriction of 1% maximum for nickel in stainless steels for certain end uses, another grade with a typical chemistry of : 15.5% Cr, 17% Mn and 0.9% Ni was developed[2] by Allegheny Ludlum and termed IA 201 The mechanical properties of the above grade matched the mechanical properties of AISI 301 stainless steel with the strength and rate of work hardening on lower side of 301 and the ability to be fabricated by bending, forming and welding duplicated the properties of type 301.
Mechanical Properties: Since both Cr and Mn in austenitic structure enable dissolution of high levels of nitrogen, 200 series can have grades with low as well as high nitrogen contents.
Due to austenitic structure and high work hardening rate, the ductility of these grades is similar to Cr-Ni steels[Fig.1(b)], therefore the toughness of nitrogen bearing 200 series grades can be higher.
Online since: January 2022
Authors: Quang Minh Do, Hoc Thang Nguyen
Morphologies and microstructure of the novel cement based RM (on the left) and its mortar after cured for 28 days (on the right) observed by SEM Figure 8 shows the feature morphology of tri-calcium aluminate (C3A) with the octahedral structure blocks which has the sizes from 2 to 5µm.
Moreover, their morphologies and microstructure were observed with the octahedral structure blocks which has the sizes from 2 to 5µm via SEM.
Taylor, Cement Chemistry, 3rd edition, ICE Publishing, 2017.
Online since: October 2014
Authors: Elaine Kenny, Declan M. Devine, Clement L. Higginbotham, Luke M. Geever
Synthetic biodegradable polymeric materials, as biomaterials, offer more advantages over natural materials in that they can be synthesised to give various properties such as reproducibility, no immunogenicity concerns and a reliable source of raw material because the polymer material, with fundamental building block units, have simple and well known structures and properties.
A polymer’s processability can be linked directly to its molecular structure such as molecular weight and molecular weight distribution.
Materials chemistry and physics. 2007;103:419-26
Online since: June 2010
Authors: Ryo Niishiro, Akihiko Kudo
Development of visible-light-driven TiO2 and SrTiO3 photocatalysts doped with metal cations for H2 or O2 evolution Ryo Niishiro1 , Akihiko Kudo1,a 1 Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan a a-kudo@rs.kagu.tus.ac.jp Keywords: Photocatalyst; water splitting; hydrogen evolution; oxygen evolution; visible-light response; doping; codoping.
Catalyst, 0.3 g; reactant solution, 150 mL of 0.05 mol L -1 aqueous silver nitrate solution; light source, 300-W Xe lamp; incident light,   440 nm (L42 and Y44 cutoff filters). 0 5 10 15 20 25 300 1 2 3 4 5 Rate of O2 evolution / µmol h-1 Amount of doped Cr and Rh / % Sub-band formation Discrete donor level formation Cr Rh Fig. 4 Effect of the amounts of doped chromium and rhodium upon the energy structures of TiO2:Cr(X%)/Sb(1.5X%) and TiO2:Rh(Y%)/Sb(2Y%).
The amounts of doped chromium and rhodium affect the energy-structure of TiO2.