Tuning Functional Behavior of Humic Acids through Interactions with Stöber Silica Nanoparticles

Aminopropyl-Silica Hybrid Particles as Supports for Humic Acids Immobilization

A series of aminopropyl-functionalized silica nanoparticles were prepared through a basic two step sol-gel process in water. Prior to being aminopropyl-functionalized, silica particles with an average diameter of 549 nm were prepared from tetraethyl orthosilicate (TEOS), using a Stöber method. In a second step, aminopropyl-silica particles were prepared by silanization with 3-aminopropyltrietho...

Biomimetic synthesis of silica nanostructures with controllable morphologies and sizes through tuning interfacial interactions.

By manipulating the interfacial interactions between the peptide templates and the silicate species derived from TEOS and APTES, a facile biomimetic method was developed for the fabrication of silica nanostructures exhibiting "string-of-beads" and fibrillar morphologies of varied sizes.

the effect of functional/notional approach on the proficiency level of efl learners and its evaluation through functional test

in fact, this study focused on the following questions: 1. is there any difference between the effect of functional/notional approach and the structural approaches to language teaching on the proficiency test of efl learners? 2. can a rather innovative language test referred to as "functional test" ge devised so so to measure the proficiency test of efl learners, and thus be as much reliable an...

Tuning the electronic behavior of Au nanoparticles with capping molecules

Partial characterization of soil humic acids through biodegradation.

A strain of Pewicillizi?tz freqzientans was successfully employed for partial degradation and characterization of humic acids. Salicyl alcohol and salicylalclehyde were detected i n culture filtrates of the fungus ~rtilizing humates under reduced oxygen tension. The enzyme systems iiivolved in the degradation of humic acids were adaptive. The humate-adapted lnyceliirln was capable of metabolizi...