Efficient and one-pot synthesis of 1,8-dioxo-octahydroxanthenes was described by Knoevenagel condensation, Michael addition and cyclodehydration of dimedone. This reaction was carried out through condensation of dimedone and various aromatic aldehydes in the presence of task-specific Brønsted acidic ionic liquid under solvent free conditions. The catalyst could be recycled five times without si...

An efficient and green method for the synthesis of pyrano[3,2-c]chromene or pyrano[4,3-b]pyrone derivatives is described by using a three-component condensation process of malononitrile, aldehyde, and 4-hydroxycoumarine or 4-hydroxypyrone in [BMIm]BF4-LiCl as an ionic liquid.

Various predictive models about the residential energy demand and residential renewable energy production have been proposed. Recent studies have confirmed that they are not normally distributed over time. The increase in renewable energy installation has brought the issue of energy storage charge and discharge control. Thus, storage control methods that properly address non-normality are requi...

The technical efficiencies of a sample of extensive Iranian cattle farms collected by Ministry of Agriculture were analyzed using a nonparametric Data Envelopment Analysis (DEA) model. Mean pure technical efficiency in a DEA model in which all variables were normalized with the number of cows was 0.79, indicating that there is ample potential for more efficient input utilization in cattle farmi...

In part I of this study, control structures were proposed for different operational regions of a postcombustion CO2 capturing process using the top-down steady-state economic part of the plantwide procedure. In the current study, the bottom-up part of the complete procedure is considered. For this purpose, dynamic simulation is used to validate the proposed control structures. Different control...

The perspective of the emerging environmentally friendly and economically efficient detonation gun technology for high-temperature gasification organic wastes with ultra-superheated mixture steam carbon dioxide is discussed. readily scalable allows establishment a highly reactive atmospheric-pressure environment in compact water-cooled gasifier due to very high local temperature (above 2000 °C)...

The energy efficiency, mechanical durability, and environmental compatibility of all moving machine components rely heavily on advanced lubricants for smooth safe operation. Herein an alternative family high-quality liquid (HQL) was derived by the catalytic conversion pre- post-consumer polyolefin waste. plastic-derived performed comparably to synthetic base oils such as polyalphaolefins (PAOs)...

Methyl chloride is the starting raw material for chloromethanes and demand chloromethane increasing steadily in world market. Continuous improvement product quality, reducing cost, improving operation efficiency, minimizing environmental emissions, enhancing process plant safety are some of challenges or constraints facing by industry. In this research work, an attempt has been made to address ...

Healthcare and human activity monitoring has become the most important task in pervasive computing. The paper presents improvements for the present real time health monitoring systems in order to attain more accurate and quick results of the condition analysis of the person in contact with the sensors, the processed method makes sure that the process is efficient and also economically