growing crops on photovoltaic farms

growing crops on photovoltaic farms

© Stanford University. Stanford, California 94305. (650) 723-2300.

Contact

 

Sujith Ravi, Stanford School of Earth Sciences: (703) 581-8186, sujith@stanford.edu

 

Ker Than, Stanford School of Earth Sciences: (646) 673-4558, kerthan@stanford.edu

 

Dan Stober, Stanford News Service: (650) 721-6965, dstober@stanford.edu

 

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bajar el consumo electrico de un mainframe sumergiendolo en liquido

bajar el consumo electrico de un mainframe sumergiendolo en liquido

 El consumo de un mainframe es significativo y repercute hondamente en nuestra calidad de vida, nuestros recursos naturales, en nuestra civilización completa, por manejar ingentes cantidades de datos.. Puede usarse aceite mineral, plásticos líquidos, un supercomputador puede consumir mucho menos si se toman estas medidas, según cuenta la Univ. de Tokio. Y todos saldremos ganando.

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Will Water Be Your Next Printer Ink?

Will Water Be Your Next Printer Ink?

There is a fact behind lab tests, it is possible recicling paper and refilling ink-cartridges with clean water by using 50 times the same paper in such a case when improving performance is needed, This could be a solution when  temporal prints are required, achieving a print period of 22 hours. This choice maybe suitable because it provides print quality similar to a jet-printing device.

Se ha demostrado a través de pruebas de laboratorio que es perfectamente posible reutilizar papel y rellenar cartuchos de tinta de impresoras estándar con solamente agua potable, lo que permite reimprimir 50 veces en el mismo folio.  Cabe señalar que la duración máxima de la impresión de documento es de veintidós horas (lo que la hace adecuada para cuando se imprimen textos temporalmente y a bajo costo), y que presenta una calidad similar a la de impresoras de inyección de tinta.

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Highly-efficient thermoelectronic conversion of solar energy and heat into electric power

Highly-efficient thermoelectronic conversion of solar energy and heat into electric power

Electric power may, in principle, be generated in a highly efficient manner from heat created by focused solar irradiation, chemical combustion, or nuclear decay by means of thermionic energy conversion. As the conversion efficiency of the thermionic process tends to be degraded by electron space charges, the efficiencies of thermionic generators have amounted to only a fraction of those fundamentally possible. We show that this space-charge problem can be resolved by shaping the electric potential distribution of the converter such that the static electron space-charge clouds are transformed into an output current. Although the technical development of such thermoelectronic generators will require further substantial efforts, we conclude that a highly efficient transformation of heat to electric power may well be achieved.

© 2013 Author(s)

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sustainia

sustainia

Sustainia is an innovation platform where companies, NGOs, foundations and thought leaders come together to support and work with a tangible approach to sustainability. With a focus on readily available solutions, Sustainia’s mission is to mature markets and sectors for sustainable products and services. The work of Sustainia equips decision makers, CEOs and citizens with the solutions, arguments, visions, facts and network needed to accelerate sustainable transformation in sectors, industries and our everyday life.

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