Brasileiros criam músculo artificial mais forte do mundo

Brasileiros criam músculo artificial mais forte do mundo: Ele levanta 100.000 vezes o seu próprio peso e gera 85 vezes mais energia mecânica do que um músculo humano.

fonte: www.inovacaotecnologica.com.br

Governo brasileiro começa a distribuir tablets para auxiliar na educação em escolas públicas

Não é de hoje que vemos entidades educacionais ao redor do mundo utilizando a tecnologia para auxiliar no aprendizado de alunos. Há algum tempo, foi anunciado que o governo brasileiro disponibilizaria tablets para educadores utilizarem em salas de aula. Agora, essa ação está se tornando realidade.
As primeiras 200 unidades de tablets foram entregues para coordenadores estaduais do Programa Nacional de Tecnologia Educacional, assim como para alguns representantes de universidades federais.
Em breve, mais aparelhos (aproximadamente 5 mil) devem ser distribuídos, chegando aos professores em 2013.

Modelos de tablets disponibilizados aos educadores

Os tablets entregues pelo governo brasileiro possuem tela de 7 polegadas, processador de 1 GHz, resolução de 1024x600, conexão WI-Fi e 16 GB de armazenamento interno. Os aparelhos foram fabricados pela Positivo e Digibras, custando ao MEC R$ 280 cada um. Foi informado que aparelhos do mesmo modelo são vendidos nas lojas por, aproximadamente, R$ 799.

Por enquanto, apenas coordenadores de cursos de formação receberam os tablets, mas a ideia é que os professores de escolas públicas recebam um treinamento para poder usar os gadgets em sala de aula.

Fonte: MEC, Agência Brasil

Leia mais em: http://www.tecmundo.com.br/educacao/33069-governo-brasileiro-comeca-a-distribuir-tablets-para-auxiliar-na-educacao-em-escolas-publicas.htm#ixzz2D92Nb7t6

Radical planes take shape

Engineers and designers are giving commercial aircraft a makeover, in a bid to make them faster, greener and more efficient.



Look up into the skies today at a passing aeroplane and the view is not that much different to the one you would have seen 60 years ago. Then and now, most airliners have two wings, a cigar-shaped fuselage and a trio of vertical and horizontal stabilizers at the tail. If it isn’t broke, the mantra has been, why fix it, particularly when your design needs to travel through the air at several hundred miles an hour packed with people.

But that conservative view could soon change. Rising fuel prices, increasingly stringent pollution limits, as well as a surge in demand for air travel, mean plane designers are going back to their drawing boards. And, now, radical new shapes and engine technologies are beginning to emerge, promising the biggest shake-up in air travel since de Haviland introduced the first commercial jet airliner in 1952.

Of course, it would be wrong to say nothing has changed in the last few decades, says Rich Wahls, an aerodynamicist at Nasa’s Langley Research Center in Hampton, Virginia. “New model airliners don’t come out every year like cars, but it’s not as if they haven’t been evolving under the skin the whole time. There’s so much more technology in there nowadays.”

Earlier improvements went mostly unnoticed because they focused on building better and quieter turbine engines with higher performance and improved fuel consumption. There have also been huge strides in computer controls and fly-by-wire systems, which make a big difference to the pilot, but not to the passengers. And in recent years, the biggest development has been the use of strong, but lightweight plastics and composite materials rather than metals, reducing the weight of planes and the amount of fuel they need to burn. This has also allowed the development of “radical” new planes like the giant Airbus A380 and the Boeing Dreamliner.

But despite these advances, aviation engineers know there is still much to be done. Take fuel prices, for instance, which have soared in recent years. Despite modern planes being 60% to 70% more efficient than those built 60 years ago, aviation fuel expenditures now account for a quarter of an airlines operating expenses, placing them on a par with labor costs. In 2011, large US air carriers paid half again as much for fuel as what they paid in 2000. Add the fact that global airline travel is expected to grow to 3.3 billion annually by 2014 (up one third from 2009), and it’s clear why engineers are searching for new ways to boost performance.

Shock test

One of the biggest efforts to rethink the airplane is being conducted by Nasa’s Subsonic Fixed-Wing program, a collaboration between the US aerospace agency and industrial partners including Boeing, GE, Lockheed Martin, Northrop Grumman and Pratt & Whitney, as well as academic institutions such as Massachusetts Institute of Technology. “We’re looking to see if we can develop technologies that can get us yet another 60 to 70% improvement in fuel efficiency,” says Wahls. In addition, the project wants to engineer new designs with a 71-decibel decrease in noise emissions and a four-fifths fall in nitrogen oxide pollutants from current standards. And, if these kinds of goals weren’t already aggressive enough, the team wants any new technology to enter service between 2030 and 2035 - a mere blink of an eye in an industry in which commercial aircraft can have multi-decade life spans.

“We are trying to determine which technologies are worth pursuing; those that might get us anywhere near our goals,” says Wahls’ boss, Ruben Del Rosario, subsonic fixed-wing program manager.

Planes under investigation by Nasa range from the extreme to the slightly more conventional. For example, Boeing’s Sugar Volt is a design that came about as part of the manufacturers Subsonic Ultra Green Aircraft Research (Sugar) project. The design – like many new concepts - is based around the idea of maximizing the plane’s lift. This reduces the amount of power needed to keep the plane in the air, as well as the amount of fuel it must burn.

Reference: http://www.bbc.com/future/story/20121106-radical-planes-take-shape?selectorSection=technology

Griffin Twenty, música vía Airplay en cualquier altavoz

Griffin ya ha puesto a la venta su última invención para que la música fluya por toda la casa. El nuevo Griffin Twenty, mostrado por primera vez en el pasado CES de Las Vegas – si se descuidan pasa un año desde que lo vimos por primera vez – es un dispositivo amplificador de audio al que podemos conectar directamente un Airport Express.

Este curioso dispositivo se encarga de, sin configuración previa, recoger vía Airplay la música que enviemos desde cualquier dispositivo compatible de Apple, y la reproduce mediante su sistema 2.1 con potencia de salida de 20 W por canal. Al sistema le podemos colocar los altavoces que queramos y cuenta con salida S/PDIF.

El Griffin Twenty se puede ya comprar en la web del fabricante por 100 dólares.

Más información | Griffin.

fonte: www.xataka.com

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Biotinta com células imprime tecidos vivos: A tecnologia poderá ajudar a criar componentes biônicos e tecidos vivos para implantes durante procedimentos médicos.

Além do espaço-tempo podem existir "influências escondidas"

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muito interessante, vale a pena ler!

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