Characterization and Adsorption Properties of Chemically Modified Sepiolite

2008 ◽  
Vol 47 (6) ◽  
pp. 1883-1895 ◽  
Author(s):  
Yasemin Turhan ◽  
Pınar Turan ◽  
Mehmet Doǧan ◽  
Mahir Alkan ◽  
Hilmi Namli ◽  
...  
Keyword(s):  
Adsorption Properties ◽  
Chemically Modified

scholarly journals Interaction of hydrated metals with chemically modified hexagonal boron nitride quantum dots: wastewater treatment and water splitting

2020 ◽  
Vol 22 (4) ◽  
pp. 2566-2579 ◽  
Author(s):  
H. Abdelsalam ◽  
W. O. Younis ◽  
V. A. Saroka ◽  
N. H. Teleb ◽  
S. Yunoki ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Quantum Dots ◽  
Wastewater Treatment ◽  
Boron Nitride ◽  
Density Functional ◽  
Hexagonal Boron Nitride ◽  
Density Functional Theory Calculations ◽  
Adsorption Properties ◽  
Functional Theory ◽  
Chemically Modified

The electronic and adsorption properties of chemically modified square hexagonal boron nitride quantum dots are investigated using density functional theory calculations.

Morphology and adsorption properties of chemically modified MWCNT probed by nitrogen, n-propane and water vapor

Carbon ◽  
2012 ◽  
Vol 50 (2) ◽  
pp. 577-585 ◽  
Author(s):  
Ajna Tóth ◽  
Kateryna V. Voitko ◽  
Olga Bakalinska ◽  
Gennadiy P. Prykhod’ko ◽  
Imre Bertóti ◽  
...  
Keyword(s):  
Water Vapor ◽  
Adsorption Properties ◽  
Chemically Modified

Binding of Tissue Plasminogen Activator to Vascular Grafts

1989 ◽  
Vol 61 (01) ◽  
pp. 131-136 ◽  
Author(s):  
Richard A Harvey ◽  
Hugh C Kim ◽  
Jonathan Pincus ◽  
Stanley Z Trooskin ◽  
Josiah N Wilcox ◽  
...  
Keyword(s):  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Fibrinolytic Activity ◽  
Polymer Surface ◽  
Enzymic Activity ◽  
Vascular Prostheses ◽  
Chemically Modified ◽  
Insoluble Surfactant ◽  
Tissue Plasminogen

SummaryTissue plasminogen activator labeled with radioactive iodine (125I-tPA) was immobilized on vascular prostheses chemically modified with a thin coating of water-insoluble surfactant, tridodecylmethylammonium chloride (TDM AC). Surfactant- treated Dacron, polytetrafluoroethylene (PTFE), silastic, polyethylene and polyurethane bound appreciable amounts of 125I- tPA (5-30 μg 125I-tPA/cm2). Upon exposure to human plasma, the amount of 125I-tPA bound to the surface shows an initial drop during the first hour of incubation, followed by a slower, roughly exponential release with a t½ of appoximately 75 hours. Prostheses containing bound tPA show fibrinolytic activity as measured both by lysis of clots formed in vitro, and by hydrolysis of a synthetic polypeptide substrate. Prior to incubation in plasma, tPA bound to a polymer surface has an enzymic activity similar, if not identical to that of the native enzyme in buffered solution. However, exposure to plasma causes a decrease in the fibrinolytic activity of both bound tPA and enzyme released from the surface of the polymer. These data demonstrate that surfactant-treated prostheses can bind tPA, and that these chemically modified devices can act as a slow-release drug delivery system with the potential for reducing prosthesis-induced thromboembolism.

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