نتایج جستجو برای: polymer modified concretes

تعداد نتایج: 340763  

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2003
Shu Taira Yasutaka Morita Eiichi Tamiya Kenji Yokoyama

We developed DNA-conjugated polymer for DNA chip fabrication. A 30 mer probe DNA and disulfide bridges were covalently attached to the polymer side chain. The DNA-conjugated polymer can be specifically adsorbed on a gold substrate surface by a self-assembly technique. The interaction between fully matched DNA and DNA-conjugated polymer was investigated by surface plasmon resonance (SPR) techniq...

Effective elastic properties for carbon nanotube reinforced composites are obtained through a variety of micromechanics techniques. An embedded carbon nanotube  in  a  polymer  matrix  and  its surrounding  interphase  is  replaced with an equivalent fiber for  predicting  the  mechanical  properties of  the  carbon  nanotube/polymer composite. The effects of an interphase layer between the nan...

Journal: :journal of computational applied mechanics 0
ali ghorbanpour arani faculty of mechanical engineering, university of kashan, kashan , islamic republic of iran hassan baba akbar zarei faculty of mechanical engineering, university of kashan, kashan , islamic republic of iran elham haghparast faculty of mechanical engineering, university of kashan, kashan , islamic republic of iran

in the present study, modelling and vibration analysis of carbon nanotubes/ fiber/ polymer composite microplates are investigated. the governing equations of the carbon nanotubes/ fiber/ polymer composite microplates are derived based on first order shear deformation plate theory, rather than other plate theories, due to accuracy and simplicity of polynomial functions. the modified couple stres...

Journal: :Nucleic acids research 1981
R M Santella D Grunberger S Broyde B E Hingerty

The conformation of poly(dG-dC).poly(dG-dC), poly(dG).poly(dC), and calf thymus DNA modified with N-acetoxy-N-2-acetylaminofluorene (N-acetoxy-AAF) was examined by extent of reaction with anti cytidine antibodies. In contrast to modified poly(dG).poly(dC0 and DNA, modified poly(dG-dC).poly (dG-dC) failed to react with the antibodies indicating that the base pairing in this polymer is intact. Th...

Journal: :Sustainability 2021

Concrete remains the most utilised construction material for building envelopes, which regulate indoor temperature to achieve human thermal comfort. Often, energy consumption performance appraisal is related behaviour of materials as heating, ventilation, and air conditioning systems all variously contribute Following development concrete technology, many types have been invented serve several ...

Nanoparticles of coordination polymer [Co2(pydc)2(H2O)6]n.2n H2O [H2pydc = pyridine-2,5-dicarboxylic acid] have been synthesized by sonochemical method and characterized by elemental analysis, infrared spectroscopy, powder X-ray diffraction, scanning electron microscopy, DLS particle size analysis and TGA/DTA. The structure of single crystalline coordination polymer developed from nanosized coo...

2015
Joji Ohshita Yohei Adachi Daiki Tanaka Makoto Nakashima Yousuke Ooyama

New donor–acceptor polymers containing disilanobithiophene (DSBT) as the donor and pyridine or pyrazine as the acceptor with or without a thiophene spacer were prepared. The polymers showed UV-vis absorption maxima at lmax 1⁄4 488–526 nm, which were red-shifted relative to those of model monomers dithienylpyridine and dithienylpyrazine (lmax 1⁄4 352–375 nm), indicating the efficient conjugation...

2017
Xiaona Luo Kai Ma Tifeng Jiao Ruirui Xing Lexin Zhang Jingxin Zhou Bingbing Li

The effective synthesis and self-assembly of graphene oxide (GO) nanocomposites are of key importance for a broad range of nanomaterial applications. In this work, a one-step chemical strategy is presented to synthesize stable GO-polymer Langmuir composite films by interfacial thiol-ene photopolymerization at room temperature, without use of any crosslinking agents and stabilizing agents. It is...

2008
M. Oostrom L. Zhong T. W. Wietsma M. A. Covert

Laboratory experiments and numerical studies have been conducted to investigate the use of a shear-thinning polymer (Xanthan gum) to improve access to low-permeability zones in heterogeneous systems. The impact of polymer concentration, fluid injection rate, and permeability contrast in the heterogeneous systems has been studied in a series of eleven two-dimensional flow-cell experiments. The S...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید