Preparation of Orthoesters Having Functional Group

On group Elements Having Square Roots

Microwave Irradiation Promoted Reactions of Orthoesters with Carboxylic Acid Hydrazides. Preparation of 1,3,4-Oxadiazoles

Rapid and highly efficient synthesis of 2- or 2,5-substituted 1,3,4-oxadiazoles by the condensation of aryl carboxylic acid hydrazides and orthoesters can be achieved under microwave irradiation using an unmodified commercial over in unsealed vessels.

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...

on group elements having square roots

Preparation of Chromatograhpy Matrices Having Thermoresponsive Polymer Brush Structure

We have prepared thermoresponsive chromatographic matrices by introducing poly(N-isopropylacrylamide) chains onto silica beads for separation of bioactive compound in aqueous media [1]. This system is highly useful to control function and properties of the stationary phase for high performance liquid chromatography (HPLC) by only change in column temperature, and has advantages in maintaining b...