Copolymerization is a very important method in the synthesis of products having physical and chemical properties sought industrial sense. In this paper, copolymerization N-(4-nitrophenyl) acrylamide monomer with D-limonene was carried out LIM-co-NPA copolymer synthesized by free radical chain polymerization reaction. The structure sustainable limonene chemically characterized FT-IR, 1H-NMR spec...

Bu çalışmada, literatürde M45 kodu ile bilinen standart tasarlanmış çimento esaslı kompozite (ECC) benzer taşıma gücü ve deformasyon kapasitesine sahip bir uçucu kül+cüruf (UK+C) geopolimer kompozit (EGC) karışımının geliştirilmesi amaçlanmıştır. amaçla M45-ECC’nin yanı sıra farklı oranlarda UK C içeren iki EGC karışımı geliştirilmiştir. Üretilen bu üç karışımın taze reolojik özelliklerinin bas...

This work presents a study of the structural properties on four representative kaolinite samples. Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Thermochemical Analyses (DTA/TGA), and Near Edge Structure (XANES) Extended Absorption Fine (EXAFS) spectroscopy measurements were carried out, different empirical indices that quantify order assessed. Also, XRD patterns EXAFS signals com...

<p>In this paper, several parts consisting of polymeric materials are studied, in order to determine if they affected when kept contact with biodiesel at constant temperature and pressure. The samples used constituted by polymers silicone (S), acrylonitrile (AN) propylene hexafluor (Viton-V7). These have been selected for investigation because form part an industrial process which used, o...

a series of polystyrene hybrid nanocomposites have been fabricated with varying amounts of tio2 viz., 0, 0.5 and 1 % w/w along with 3% ts by in-situ polymerization method. the influence of surface modified tio2 nanoparticles on the thermal properties of ps matrix was examined using thermogravimetry and differential scanning calorimetry. thermal characteristics of the polystyrene/ts/tio2 hybrid ...

synthesis, identification and thermal behavior studies of nanoparticles cobalt (ii) bromide has been studied in this research. cobalt (ii) bromide was synthesized by planetary high-energy ball mill. the general formula of this compound is cobr2.6h2o. the synthesized nanoparticles were characterized by fourier transform infrared spectroscopy and also size and structure of synthesized nanoparticl...

Mast cells have been implicated in malignant processes, mainly through clinical correlative studies and by experiments performed using animals lacking mast cells due to defective c-kit signaling. However, mast cell-deficient mouse models based on c-kit defects have recently been questioned for their relevance. Here we addressed the effect of mast cells in a tumor setting by using transgenic Mcp...

AIM To assess the ability of human immunodeficiency virus-1 (HIV-1) tat- and tat/nef-defective genomes containing diphtheria toxin A chain gene (DTA) to inhibit replication of HIV in human cells. METHODS Plasmids were constructed to contain the HIV-1 genome disabled by tat and tat/nef deletions, and sequences coding for the A subunit of diphtheria toxin gene were inserted into one of these de...