GC: n CT: “The present project is aimed to the development of a multi-step process for the production of second-generation biofuels from lignocellulosic biomass in a cost-efficient way through the use of tailored nanostructured catalysts. The proposed process is based on the cascade combination of three catalytic transformations: catalytic pyrolysis,
CG: n CT: In some countries used fuel is reprocessed to recover its uranium and plutonium, and to reduce the final volume of high-level wastes. The plutonium is normally recycled promptly into mixed-oxide (MOX) fuel, by mixing it with depleted uranium. Where uranium recovered from reprocessing used nuclear fuel (RepU)
GC: n CT: Extraction of algae pigments from a depurated effluent. A minireview of the researchs in algal biomass from wastewater depuration ponds is presented. It’s shown algal pigments cultured, although some other characteristics are commented: factors determining algal populations, biotreatment of agroindustrial effluents with microalgae and potencial applications of
GC: n CT: Renewable Energy Desalination: An Emerging Solution to Close MENA’s Water Gap. Many countries in the Middle East and North Africa (MENA) region are facing real water security challenges. In arid, coastal cities, water demand is often met through large-scale desalination systems powered by fossil fuels. While groundwater
GC: n CT: Diodes are components which allow current to flow in just one direction. It is often recommended that a diode be fitted in a photovoltaic solar panel to prevent reverse current from flowing back through the panel at night time. As current passes through a diode there is
GC: n CT: Photovoltaics is the direct conversion of light into electricity at the atomic level. Some materials exhibit a property known as the photoelectric effect that causes them to absorb photons of light and release electrons. When these free electrons are captured, an electric current results that can be
GC: n CT: DC (direct current) is the unidirectional flow or movement of electric charge carriers (which are usually electrons). The intensity of the current can vary with time, but the general direction of movement stays the same at all times. As an adjective, the term DC is used in
GC: n CT: This project is investigating heat loss from high-temperature solar thermal receivers and developing the next generation of improved receiver designs to reduce that loss. Experimental and computational modelling are being used to improve the understanding, prediction and management of convection and radiation heat loss in high-temperature solar
GC: n CT: Reusable medical waste tubs are our preferred transport container. We actively encourage all our customers to consider the use of reusable disposal containers instead of corrugated boxes to minimize the amount of deforestation. Since 2006, we have specifically initiated programs that foster the use of reusable containers
CG: n CT: Both online learning and distance learning require similar online learning tools, but there the similarity ends. Overall there are three major differences between online and distance learning: Location Interaction Intention Differences in Location The key difference between online learning and distance learning is location. With online learning
CG: n CT: Distributed energy resources (DERs) are small technologies that produce, store and manage energy. Examples include solar panels, small wind turbines, electric vehicles and microgrids. Greater use of DERs could improve resource efficiency, increase energy system resilience, and give individuals and communities a stronger role in decarbonisation. As
GC: n CT: Historically, distributed generation meant combustion generators (e.g. diesel gensets). They were affordable, and in some cases reliable, but they were not clean. While many people will tolerate dirty generation thousands of miles away from them, they think twice when it is outside their bedroom window or office
CG: n CT: Boilers to burn woodfuels such as wood chips and pellets tends to be physically larger and more expensive than equivalent gas or oil boilers. This is partly as a result of the physical requirements for a high temperature combustion environment and transporting the solid fuel. As boilers
GC: n CT: A dynamical system consists of an abstract phase space or state space, whose coordinates describe the state at any instant, and a dynamical rule that specifies the immediate future of all state variables, given only the present values of those same state variables. For example the state
CG: n CT: E-fuels, like e-methane, e-kerosene and e-methanol, are all fuels in gas or liquid form that are produced from renewable (solar or wind power, for example) or decarbonised electricity. This raw material differentiates them from biofuels, which are primarily produced from biomass. By drastically reducing the harmful emissions
GC: n CT: What is e-learning? In the early days of e-learning, some people were concerned that bringing computers into the classroom would remove the human element that many learners benefit from. But technology has developed, and smartphones and tablets are now widely embraced in both the classroom and office.
GC: n CT: There are three major problems with software projects: over budget, behind schedule and poor quality. It is often too late to correct these problems by the time they are detected in failed software projects. In this paper, we discuss design, implementation, and evaluation of an experimental intelligent
GC: n CT: An earth-to-air heat exchanger draws ventilation supply air through buried ducts or tubes. As the temperature of the ground below 3m is practically constant, it substantially reduces ambient air temperature fluctuations. It therefore provides space conditioning throughout the year, with the incoming air being heated in the
GC: n CT: The rugged Cabinet Mountains of northwestern Montana are an island of wild country with a population of fewer than 30 grizzly bears, their existence tenuous because they are cut off from others of their kind by distance, roads, and other development. Biologists are concerned about the small
GC: n CT: Ecological engineering has been defined as the design of ecosystems for the mutual benefit of humans and nature. Specific topics covered in the journal include: ecotechnology; synthetic ecology; bioengineering; sustainable agroecology; habitat reconstruction; restoration ecology; ecosystem conservation; ecosystem rehabilitation; stream and river restoration; wetland restoration and construction;