The United States is truly at a transportation crossroads. We have operated from a perspective that largely dates to the 1950s to build, maintain, and operate the nation's transportation infrastructure. With major energy, environmental, social, and economic challenges occurring as the current federal transportation law is scheduled for authorization, now is the time for substantive change in ou...

concerns related to conservation of fossil fuels and greenhouse gas emission has increased energy balance studies in crop production systems. in the present study, six wheat (triticum aestivum) fields were selected from east and west of gorgan, golestan province, iran. during three consecutive growing seasons, data were gathered on energy use in all production practices. then, all the energy us...

a value chain is a series of events that takes a raw material and with each step adds value to it. global interest in the application of natural gas (ng) in production and transportation has grown dramatically, representing a long-term, low-cost, domestic, and secure alternative to petroleum-based fuels. many technological solutions are currently considered on the market or in development, whic...

This paper studies the frozen pork transportation in short and long distances, loss of cooling capacity energy consumption cold chain are analyzed experimentally numerically. It finds that material for freezer insulation plays important role saving during refrigerated transportation, an optimal can reduce temperature rise by 13.88% heat flow 71.05% compared with traditional ones. A fractal mode...

Electric vehicles (EVs) are a promising solution to reduce the transportation dependency on oil, as well as the environmental concerns. Realization of E-transportation relies on providing electrical energy to the EVs in an effective way. Energy storage system (ESS) technologies, including batteries and ultra-capacitors, have been significantly improved in terms of stored energy and power. Besid...

 Vehicle miles travel per lane mile  Transportation service index  Personal spending on transportation Activity System  Income (GNI/capita)  Education  Life Expectancy Environmental System  Greenhouse gases (CO2)  Air Pollutants (CO, NO2,SO2, PM10, VOC)  Water Pollutants (BOD)  Energy Consumption Estimation of Performance Indices for the Planning of Sustainable Transportation Systems ...

The low carbon development is the important trend of Chinese urbanism, and the gap between transportation infrastructure resource and travel demand induces to the transportation problems, such as congestion, energy, and safety. There is a missing connection with the Demand-Oriented Planning and Low-Carbon-Oriented Planning, since most of our discussion in the Urban Comprehensive Planning Procee...