10 research outputs found
Ultra high cis polybutadiene by monomeric neodymium catalyst and its mechanical and dynamic properties
The Role of Cultural Factors in Locating of Archaeological Sites: the Settlement Patterns of Prehistoric Sites in JÄjarm, Khorasan, Iran
The hydrological networks of the Balkh Oasis after the arrival of Islam: a landscape archaeological perspective
Looking Like Silver: Mica as a Pigment in Mid-Seventeenth Century Persian Wall Decorations
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Assembly of an injectable noncytotoxic peptide-based hydrogelator for sustained release of drugs
A new synthetic tripeptide-based hydrogel has been discovered at physiological pH and temperature. This hydrogel has been thoroughly characterized using different techniques including field emission scanning electron microscopic (FESEM) and high-resolution transmission electron microscopic (HR-TEM) imaging, small- and wide-angle X-ray diffraction analyses, FT-IR, circular dichroism, and rheometric analyses. Moreover, this gel exhibits thixotropy and injectability. This hydrogel has been used for entrapment and sustained release of an antibiotic vancomycin and vitamin B12 at physiological pH and temperature for about 2 days. Interestingly, MTT assay of these gelator molecules shows almost 100% cell viability of this peptide gelator, indicating its noncytotoxicity
Separation and Purification of Hydrocarbons with Porous Materials
This Minireview focuses on the developments of the adsorptive separation of methane/nitrogen, ethene/ethane, propene/propane mixtures as well as on the separation of C(8) aromatics (i.e. xylene isomers) with a wide variety of materials, including carbonaceous materials, zeolites, metalâorganic frameworks, and porous organic frameworks. Some recent important developments for these adsorptive separations are also highlighted. The advantages and disadvantages of each material category are discussed and guidelines for the design of improved materials are proposed. Furthermore, challenges and future developments of each material type and separation processes are discussed