Blog Posts

sexta-feira, 14 de junho de 2013

Faça você mesmo, em Feltro. Mais um Livro dos Desktop Gremlins, Inovação Brasileira, Cimento que se auto-regenera, e o Grafene é mesmo forte!

Iniciativa 100% Portuguesa, a nossa amiga Mónica divulga,  no Campo Pequeno estes Kits Faça-você-mesmo, em Feltro, por isso, as Engenhocas e os Engenhocas podem fazer os seus próprios Ursinhos de Peluche...

Kits Como Fazer - com Instruções
Como começar? 
A Feltragem é bastante fácil de aprender. Quem nunca experimentou, pode encontrar aqui nesta página, Kits básicos para os seus primeiros projectos e também algumas dicas. 

Fica em boa companhia, com os Dessktop Gremlins, cujo Livro está em plena Impressão:

Desktop Gremlins Volume 1 is OFF TO THE PRINTER! 
I will begin shipping orders as soon as I can afterwards. In terms of planning, due to mailing times, the variety of package sizes, and world-wide destinations you'll want to assume your package will arrive late-June for U.S. locations and early-July for international orders. Stay tuned to more news as I have it! ***

E do Brasil, vem Inovação, e Inovação prática e barata, e para quem se preocupa com a Saúde, o que é bem bom!

Brazilian researchers develop cheap portable pesticide biosensor

Antonio Pasolini

A multidisciplinary Brazilian research team has developed a biosensor to measure pesticide content on food produce, water and soil. The technology is in its development phase, but if developed into a commercial product it could provide a cheap, affordable and portable method to monitor this type of contamination.
The biosensor is the result of a research carried out by Izabela Gutierrez de Arruda, a post-graduation student at Instituto de Física de São Carlos, in São Paulo State. The biosensor uses an enzyme inhibitor to detect the presence of a pesticide called methamidophos, an insecticide linked to neurological problems. Although enzyme inhibition is not necessarily a new method, the innovation here is in the use of an ultra-thin film to magnify the signals.

E criaram Cimento que se auto-regenera, o que vai tornar a Construcção muito mais sustentável, económicamente...

Bath University uses bacteria for self-healing concrete

David Szondy

You’d think that concrete would last forever. After all, it’s pourable stone, so it should hang around as long as the Rock of Gibraltar. But, under the right (or wrong) conditions, concrete decays with alarming speed. To combat this, researchers at the University of Bath in the UK are working on a self-healing concrete that uses bacteria to seal the cracks that lead to decay. In this way, they hope to cut down on maintenance costs and increase the life of concrete structures.
Concrete is one of the most remarkable building materials of the modern age. It’s pourable into an incredible number of shapes, sets like stone, and when combined with iron rebars is immensely strong. Unfortunately, it is much more vulnerable than people think. Proper design, pouring and curing of concrete structures can go a long way, but one tiny crack can set a building on its way to becoming a pile of rubble.

E mesmo rememdado, o Grafeno continua a ser o Material mais forte!
Fantástico, e uma boa notícia para os Sovinas, como eu...

Even when stitched together, graphene remains the strongest known material
Dario Borghino

A study conducted at Columbia University has revealed that even when stitched together from much smaller fragments, large sheets of graphene still retain much of their mechanical properties. The discovery may be a crucial step forward in the mass-production of carbon nanotubes that could be used to manufacture flexible electronics, ultra-light and strong materials, and perhaps even the first space elevator.

In its purest form, graphene is quite remarkable: it is the strongest material known to man, a great conductor of heat and electricity, and is both very stiff and very ductile. Graphene is also exquisitely light: at a mere 0.77 mg per square meter, a giant sheet covering the whole of the Unites States would weigh less than four space shuttles at launch.
Graphene derives the bulk of its strength from two factors. Firstly, each carbon atom is surrounded by six others in a highly stable honeycomb structure, with the atoms locked firmly in place by very strong covalent bonds; secondly, its extremely simple, two-dimensional structure leaves little room for weakening defects to appear in the lattice.


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