نتایج جستجو برای: greener technique

تعداد نتایج: 613308  

2017
Jihen Ati Pierre Lafite Richard Daniellou

Carbohydrate related enzymes, like glycosyltransferases and glycoside hydrolases, are nowadays more easily accessible and are thought to represent powerful and greener alternatives to conventional chemical glycosylation procedures. The knowledge of their corresponding mechanisms has already allowed the development of efficient biocatalysed syntheses of complex O-glycosides. These enzymes can al...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1391

abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...

2013
Katherine Ord Richard Mitchell Jamie Pearce

BACKGROUND There is accumulating evidence that greater availability of green space in a neighbourhood is associated with health benefits for the local population. One mechanism proposed for this association is that green space provides a venue for, and therefore encourages, physical activity. It has also been suggested that socio-economic health inequalities may be narrower in greener areas bec...

Journal: :ACS Applied Materials & Interfaces 2021

Pharmaceutical, chemical, and food industries are actively implementing membrane nanofiltration modules in their processes to separate valuable products recover solvents. Interfacial polymerization (IP) is the most widely used method produce thin-film composite membranes for reverse osmosis processes. Although considered green environmentally friendly, fabrication has still be further developed...

Journal: :Chemical communications 2014
Leonardo Degennaro Marina Zenzola Piera Trinchera Laura Carroccia Arianna Giovine Giuseppe Romanazzi Aurelia Falcicchio Renzo Luisi

The regioselective lithiation-functionalization of 2-arylazetidines has been explored. The nature of the N-substituent is mainly responsible for a regioselectivity switch. ortho-Lithiation occurred, using hexyllithium as a greener base, in N-alkylazetidines, while α-benzylic lithiation has been observed with N-Boc azetidines.

2013
MOHAMMED ZAMIR AHMED KABEER AHMED

An efficient and greener synthesis of bis(indoly)methanes was investigated via electrophilic substitution reaction of indole with carbonyl compounds in the presence of lemon juice as natural acid catalyst. The demonstrated environmentally benign protocol provided bis(indoly)methanes under mild reaction conditions, shorter reaction time and in excellent yield with simple work up procedure.

Journal: :Environmental Health Perspectives 1998

Journal: :Ökologisches Wirtschaften - Fachzeitschrift 2006

Journal: :The American Journal of Medicine 2017

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید