Abstract The present study was carried out to investigate biodiesel production via transesterification of sunflower oil employing heterogeneous catalyst derived from indigenous ginger (Zingiber Officinale) leaves. It also aims compare the techno-economy performance ginger-based catalysts in 3 different forms viz. calcinated (CGL), activated by KOH (KGL) and NaOH (NGL). plant-based were characte...

As an envisaged future of transportation, self-driving cars are being discussed from various perspectives, including social, economical, engineering, computer science, design, and ethical aspects. On the one hand, self-driving cars present new engineering problems that are being gradually successfully solved. On the other hand, social and ethical problems have up to now being presented in the f...

Produced waters (PWs) are oilfield waste streams rich in minerals and hydrocarbons whose production rate is largely increased last decades following the corresponding increase of energy demand. The high salinity level PWs inhibits adoption cheap biological treatments. Also, desalination techniques based on osmotic membranes would require severe pre-treatments. As an alternative, Reverse Electro...

In the paper, at first, South-West Baltic Sea environmental and transportation conditions are described. Then a present situation in the passenger and vehicle transportation is overviewed based on the situation of Polish and foreign ferry companies. The techno-economical considerations for the passenger/car ferry for Szczecin-Malmoe route are later discussed. Then main particulars of various cr...

Cognitive radios are finally emerging in the form of White Space devices capable of accessing spectral resources allocated for communication systems but not actually in use. Temporal and geographical information on existence of White Space is obtained from dedicated database through Internet access. In this paper, technological advancements enabling commercial utilization of wireless White Spac...

ABSTARCT: Solar drying is an integral part of rural life for various products, especially vegetable, fruits & spices which are produced in rural areas and have no scientific means of preserving such raw products. This paper is an attempt to review the solar drying process & solar dryers used for chilli drying worldwide which includes types of solar dryer, drying process & techno economical feas...

Solar water pumping systems are fundamental entities for transmission and storage purposes whether it is has been used in irrigation or residential applications. The use of photovoltaic (PV) panels to support the electrical requirements these executed globally a long time. However, introducing optimization sizing techniques such can benefit end-user by saving money, energy, This paper proposed ...