نتایج جستجو برای: gel chemistry

تعداد نتایج: 212056  

2017
Ales Styskalik David Skoda Craig E. Barnes Jiri Pinkas Damien P. Debecker

This review is devoted to non-hydrolytic sol-gel chemistry. During the last 25 years, non-hydrolytic sol-gel (NHSG) techniques were found to be attractive and versatile methods for the preparation of oxide materials. Compared to conventional hydrolytic approaches, the NHSG route allows reaction control at the atomic scale resulting in homogeneous and well defined products. Due to these features...

Journal: :Journal of the American Chemical Society 2003
Mary E Robbins Mark H Schoenfisch

The release of nitric oxide (NO) from polymers has proven to be highly effective at inhibiting platelet adhesion and thus enhancing the blood compatibility of medical implants. Micropatterning techniques were used to design surfaces that release NO while preserving the underlying substrate for other applications (e.g., sensors). Micropatterned NO-releasing substrates based on aminosilane-contai...

Journal: :journal of oil, gas and petrochemical technology 0
seyed sajjadia faculty of petroleum, gas and petrochemical engineering, department of chemical engineering, persian gulf university, bushehr, iran ali izadbakhsh department of chemical engineering, faculty of petroleum, gas and petrochemical engineering, bushehr, iran khodabakhsh niknam faculty of science, department of chemistry, persian gulf university, bushehr, iran

several samples of mesoporous silica were prepared via sol-gel chemistry in the presence of ctab as template with variation of stirring intensity and aging time, ratios of ctab/sio2 and nh4oh/h2o in synthesis mixture. effects of aging temperature, hydrothermal treatment and ter-butanol addition to the synthesis mixture on the textural properties of obtained samples were also studied. results of...

2009
William L. Scott Christopher O. Audu Jeffery L. Dage Lawrence A. Goodwin Jacek G. Martynow Laura K. Platt Judith G. Smith Andrew T. Strong Kirk Wickizer Eric M. Woerly Martin J. O’Donnell

For the successful implementation of Distributed Drug Discovery (D(3)) (outlined in the accompanying Perspective), students, in the course of their educational laboratories, must be able to reproducibly make new, high quality, molecules with potential for biological activity. This article reports the successful achievement of this goal. Using previously rehearsed alkylating agents, students in ...

Journal: :Journal of manufacturing and materials processing 2023

A hybrid approach based on laser texturing and surface coating for the combined modification of topography chemistry has been proposed to provide a versatile development functional surfaces. The experimental procedure comprised nanosecond pulsed AISI 304 stainless steel substrates followed by deposition thin (<1 µm) coatings with two different technologies, sol–gel PE-CVD, aim independently ...

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