نتایج جستجو برای: diethylenetriamine
تعداد نتایج: 699 فیلتر نتایج به سال:
Epoxy systems are widely applied as adhesives in the aerospace industry. They have excellent adhesion properties, however, being thermosetting, epoxy show fracture brittleness characteristics. Polysulfide and polymercaptans good options to increase flexibility of adhesive. Thermal analysis techniques generally used evaluate curing degree systems. In most cases, when infrared (IR) is used, it em...
MCM-48 were prepared using hexadecyl trimethyl ammonium bromide and TEOS modified with N1-(3-trimethoxysilylpropyl) diethylenetriamine by post-synthesis method to develop efficient adsorbent for heavy metal adsorption. These materials determined X-ray diffraction, N2 adsorption–desorption measurement, scanning electron microscopy. The results show that the modification of resulted in a decrease...
We have investigated the effects of dipping time, solution concentration and solvent type on the formation of self-assembled monolayers with aminosiloxane molecules (i.e., N-(3 trimethoxysilylpropyl)diethylenetriamine (TPDA)) on the Si(001) surface. Studies performed with an ellipsometer showed that monolayers with a thickness of about 1.2 nm were formed when the dipping time is about 2 h, whil...
Primary hepatic angiosarcoma is the most common malignant mesenchymal tumor of the liver. It has a poor prognosis and various appearances on magnetic resonance (MR) images. We report a case of hepatic angiosarcoma with a characteristic appearance on gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced MR imaging in the hepatobiliary phase. A 72-year-old man was adm...
PURPOSE To determine serum fetuin-A pattern after renal transplantation and its association with graft outcome. MATERIALS AND METHODS In 41 renal transplant recipients, serum pretransplant fetuin-A levels and serum fetuin-A concentrations on days 7 and 30 after transplantation were measured using the enzyme-linked immunosorbent assay (ELISA) method. Also, the association between serum fetuin...
The combustion of fossil fuels (eg coal, oil shale) to generate energy results in the production of alkaline solid wastes @y ash, clean coal technology (CCT) ash, spent shale etc). Reactions involving calcium (Ca) and carbon dioxide (C02) usually control the pH and mobility of inorganic contaminants such as Cd, P b and Se in alkaiine solid wastes. Samples offly ash, spent shale iutd CCT ash wer...
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