Sustainability has become a very significant research topic since it impacts many different manufacturing industries. The adoption of sustainable manufacturing practices and technologies offers industry a cost effective route to improve economic, environmental, and social performance. As a major manufacturing process, the machining system plays an important role for sustainable manufacturing on...

We report development of a genetic system for making targeted gene knockouts in Clostridium thermocellum, a thermophilic anaerobic bacterium that rapidly solubilizes cellulose. A toxic uracil analog, 5-fluoroorotic acid (5-FOA), was used to select for deletion of the pyrF gene. The ΔpyrF strain is a uracil auxotroph that could be restored to a prototroph via ectopic expression of pyrF from a pl...

Heterogeneity will prevail in Future Networks at many technology levels, including devices, access networks, services and applications. Moreover, the exponential proliferation of mobile computing has been followed by concerns and research efforts regarding a sustainable development of wireless systems, specially related with energy efficiency. The envisioned future networking environments will ...

Energy plays an active role in sustainable development in Iran, both in the sustainable and the development aspects. This study aims to estimate the nexus of economic growth and the renewable energy in Iran during 1981-2012. We employ the Auto-Regressive Distributed Lag (ARDL) model to estimate a log-linear equation. The results suggest that renewable energy consumption is an insignificant driv...

Related Articles Heat transfer and friction factor of solar air heater having duct roughened artificially with discrete multiple v-ribs J. Renewable Sustainable Energy 4, 033103 (2012) Heat transfer and friction characteristics of dimple-shaped roughness element arranged in angular fashion (arc) on the absorber plate of solar air heater J. Renewable Sustainable Energy 4, 023112 (2012) Experimen...

1 Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, CA, USA 2 Energy Center and Laboratory of Molecular Simulation, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland 3 Department of Earth and Environmental Engineering, Lenfest Center for Sustainable Energy, Columbia University, Ne...

In this paper is investigated the problem of managing limited resources in human-robot interaction with a computational architecture of emotion. The architecture is based on the appraisal theory of affect and an ethological motivational model of task selection. Key variables and performance criteria for robotic energy autonomous behaviour in interaction with humans are discussed. The role of ar...

Solar photovoltaic technologies have for some time been promoted as a cost effective means of rural electrification in developing countries. However, institutional structures resulting in poor maintenance have adversely affected the sustainability of past solar projects. In Fiji, the Renewable Energy Service Company (RESCO) program is the latest attempt to promote solar-based rural electrificat...

Renewable energy can become a key factor for sustainable next generation cellular networks. This work explores the possibility to feed base stations of a Heterogeneous Network with renewable energy sources, and analyzes implications of such choice with respect to a classical grid powered solution. Cost and CO2 emission savings are evaluated for different scenarios, showing that properly powerin...