نتایج جستجو برای: especially nonrenewable
تعداد نتایج: 391745 فیلتر نتایج به سال:
Abstract Adding to the debate on drivers of carbon neutrality, perspective time-dependent effect crucial factors such as renewable and conventional energy utilization should offer relevant policy for stakeholders in sector. On empirical front, several studies have investigated causal interaction between nonrenewable consumption, economic growth, dioxide (CO 2 ) emission by using approaches. In ...
The scarcity of non-renewable resources today is a more and more crucial issue for many branches of industry. To counteract these problems, extensive, timely and up-to-date information on non-renewable resources' supply and demand is essential. Nevertheless, this information today is distributed, heterogeneous and only available in an informal or semi-formal structure. Thus, companies often do ...
The discrete time –cost trade-off problem (DTCTP) is one of the main aspects of project scheduling. In DTCTP , we treat cost as a non-renewable resource and the availability of renewable resource per period has been neglected. It was recently suggested that the quality of project should also be taken into consideration. Therefore, when renewable resources and quality are considered, the traditi...
The impending phosphorus crisis Phosphorus is a nutrient essential to all living organisms, and thus, it is essential in food production for humans. Although it is the eleventh most abundant element on earth, phosphorus never occurs in its pure form and is always bonded with other elements forming other compounds, such as phosphate rock. More importantly, much of the phosphorus in soil is not a...
The aim of this research is to examine the market potential for wood plastic composite (WPC) products in the highway construction sector in place of nonrenewable materials (e.g. virgin plastic and steel) and preservative-based products (treated wood). State-level transportation officials indicate that the majority of highway construction purchases are conducted by highway construction contracto...
The high prices currently achieved in the acquisition of nonrenewable energy for electricity production and the low levels of energy efficiency in the housing sector are the national situation, which leads the Portuguese government to encourage the acquisition, the installation and the use of technologies which exploit indigenous and renewable energy. This study presents an application that was...
Sustainable energy utilization and environmental protection are important to sustainable economic growth. In this paper, we develop an endogenous economic growth model and discuss the optimal path of sustainable economic growth with the constraints of energy and environment. We find that sustainable economic growth can be achieved only when the relative contribution rate of environment protecti...
Earth-air heat exchange (EAHE) systems offer the possibility of reducing use of nonrenewable energy for heating ventilation air in cold climates. The number of installations of large diameter (greater than 900 mm) EAHE systems reported for cold climates is small. Even less has been reported on their heating performance, but the available information suggests that further rigorous assessment is ...
Ionic liquids (ILs) have unique properties applicable to a variety of industrial processes. Nearly universal solvating capabilities, low vapor pressures, and high thermal stabilities make these compounds ideal substitutes for a wide range of organic solvents. To date, the best performing ILs are derived from nonrenewable sources such as petroleum or natural gas. Due to their potential for large...
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