The use of microwave energy in the production of arts ceramics

Author(s):  
A.I. Anoricheva-Yeremka ◽  
V.D. Yeremka
Keyword(s):  
Author(s):  
Yuji WADA ◽  
Eiichi SUZUKI ◽  
Motoyasu SATO
Keyword(s):  

2020 ◽  
Vol 17 (8) ◽  
pp. 594-609
Author(s):  
Preetismita Borah ◽  
Vhatkar Dattatraya Shivling ◽  
Bimal Krishna Banik ◽  
Biswa Mohan Sahoo

In recent years, hybrid systems are gaining considerable attention owing to their various biological applications in drug development. Generally, hybrid molecules are constructed from different molecular entities to generate a new functional molecule with improved biological activities. There already exist a large number of naturally occurring hybrid molecules based on both non-steroid and steroid frameworks synthesized by nature through mixed biosynthetic pathways such as, a) integration of the different biosynthetic pathways or b) Carbon- Carbon bond formation between different components derived through different biosynthetic pathways. Multicomponent reactions are a great way to generate efficient libraries of hybrid compounds with high diversity. Throughout the scientific history, the most common factors developing technologies are less energy consumption and avoiding the use of hazardous reagents. In this case, microwave energy plays a vital role in chemical transformations since it involves two very essential criteria of synthesis, minimizing energy consumption required for heating and time required for the reaction. This review summarizes the use of microwave energy in the synthesis of steroidal and non-steroidal hybrid molecules and the use of multicomponent reactions.


2021 ◽  
Vol 154 ◽  
pp. 106199
Author(s):  
Wei Liu ◽  
Haiping Zhang ◽  
Yuanyuan Shao ◽  
Hui Zhang ◽  
Jesse Zhu

2020 ◽  
Vol 26 ◽  
pp. 1279-1283
Author(s):  
Rahul Samyal ◽  
Ashok Kumar Bagha ◽  
Raman Bedi
Keyword(s):  

Author(s):  
Chaari Mohamed Zied ◽  
El-Rahimi Rashid ◽  
Aljabri Hareb

2017 ◽  
Vol 44 (3) ◽  
pp. 31-34 ◽  
Author(s):  
V.F. Kablov ◽  
A.V. Perfil'ev ◽  
V.P. Shabanova

Methods for activating the surface of rubber crumbs using different physicochemical effects are examined. The properties of industry-produced activated rubber crumbs and the prospects of their use in different polymer compounds are analysed. The influence of the degree and depth of devulcanisation of the surface layer of rubber crumbs on the rheological and physicomechanical properties of rubber composites is shown. Promising directions of modern research in the area of surface activation of rubber crumbs are described. It is shown that the application of microwave energy to activate rubber crumbs directly before the manufacture of articles from them makes it possible to obtain products with improved properties.


Author(s):  
Mousumi Chakraborty ◽  
Vaishali Umrigar ◽  
Parimal A. Parikh

The present study aims at assessing the effect of microwave irradiation against thermal heat on the production of N-acetyl-p-anisidine by acetylation of p-anisidine. The acetylation of p-anisidine under microwave irradiation produces N-acetyl-p-anisidine in shorter reaction times, which offers a benefit to the laboratories as well as industries. It also eliminates the use of excess solvent. Effects of operating parameters such as reaction time, feed composition, and microwave energy and reaction temperature on selectivity to the desired product have been investigated. The results indicate as high as a 98% conversion of N-acetyl-p-anisidine can be achieved within 12-15 minutes using acetic acid. The use of acetic acid as an acetylating agent against conventionally used acetic anhydride eliminates the handling of explosive acetic anhydride and also the energy intensive distillation step for separation of acetic acid. Organic solvent like acetic anhydride are not only hazardous to the environment, they are also expensive and flammable.


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