This study empirically examines how fluctuations in oil prices affect the stock returns of clean energy and gas companies between 2001:01 2022:06. Our results show that a negative supply shock affects positively. In contrast, an oil-specific demand negatively them. The findings also reveal increase owing to tends not improve companies. Consequently, indicate are alternatives.

this study aimed to evaluate persian search engines based on the criteria obtained from alexa databank using correspondence analysis. through searching the web, 23 search engines were found, which due to their cease and no coverage by alexa, this number was reduced to 16. data analysis revealed that ghatreh search engine occupied a high rank in most of attributes like traffic rank, time spent o...

Günümüz koşulları altında yatırımcıların karar verebilmesi için risk ve getiri arasındaki ilişkiyi ön planda tutması gerekmektedir. Volatilite riskin bir boyutunu ölçerken, diğer taraftan ise değişken veya değişkenlerin ortalamaya göre nasıl değiştiğini gösteren durumdur. Finansal piyasalar çok önemli durumdur volatiliteye etki eden birçok faktör bulunmaktadır. Bu faktörler yönetimi yatırım kar...

The organic Rankine cycle (ORC) has been widely studied to recover waste heat from internal combustion engines in commercial on-road vehicles. To achieve a cost-effective ORC, trade-off between factors such as costs, power outputs, back pressure, and weight needs be carefully worked out. However, the is still huge challenge engine recovery. In this study, thermoeconomic optimization study of ve...

OBJECTIVES About 7000 tonnes of unleaded petrol were discharged into the English Channel after a tanker collision off Ostend on Saturday 18 January 1997. The petrol evaporated and the vapour plume was carried across the central part of England to Wales, resulting in reports of unidentified odours, and irritation of the eyes, skin, and upper respiratory tract. This work uses this incident to sho...

Biosurfactants are amphiphilic compounds produced by various bacteria and fungi which reduce surface and interfacial tension. Oil contaminated soil were collected from four different automobile shop in Mayiladuthurai, Tamilnadu, India. Bacillus subtilis and Pseudomonas aeruginosa were isolated and identified from these four samples and these were screened for biosurfactants production using veg...

this article studies the effects of dividing the distribution of petrol on changing the methods of city transportation in mashhad, six months after the plan. the sampling method used in this research is the classed sampling method and there were 670 participants, all from the city of mashhad. the results of the study show that the rate of satisfaction from the plan, is very low; just 20%. the y...

Ms M. a 13 years old class III student presented with one year history of petrol fumes inhalation dependence and six months history of kerosene inhalation dependence. She liked the smell of fumes getting pleasant feeling of well-being and increased confidence. She though fulfilled all the criteria of inherent dependence differed from typical cases described in published reports. Like male prepo...