Blog Posts

quarta-feira, 24 de agosto de 2011

Camisas com Ar Condicionado!!!

Uma Camisa com Ar Condicionado!!!

Air conditioned shirt has its fans

By Ben Coxworth

Last year we took a look at the EntroSys Motorcycle Air Conditioning system, which is a vest that's designed to blow cooling air across the torsos of leather-jacket-clad bikers. While the EntroSys needs to be attached to a bike-mounted air conditioning unit, there are doubtless many sweltering people who would appreciate a similar but more mobile garment, that they could wear while walking around or working outside. Well, needless to say, there is one - it's the Kuchofuku Air-Conditioned Cooling Work Shirt.

The shirt features two fans which run at high or low speeds, as selected on a back-mounted control box (we're assuming that's where the fans are mounted, too). Air circulation is 20 liters (5.28 US gallons) per second at high, and 12 liters (3.17 US gallons) per second at low. Everything is powered by two AA batteries, although no run times are listed.

Uma Unimog feita pela Lego Technik, 2 coisas de que eu gosto...

Unimog by Lego Technic

By Gizmag Team

It seems like only yesterday, but Lego Technic has been with us now since 1977, and in that third of a century, the technical building blocks have no doubt stimulated the young minds of hundreds of thousands of would-be engineers.

Off-road trucking manufacturer Unimog (Universal Motor Gerät) celebrates its 60th anniversary this year, so the two companies got together and produced a functioning (with pneumatic crane with working gripper arm) 1:12-scale commemorative model. You can buy the 2,048 piece kit for GBP155 (US$255).

Reparar Dentes, sem Brocas!

Doing away with the dentist’s drill by helping teeth regenerate themselves

By Darren Quick

The fear of having a mechanical drill crammed into one's mouth is enough to keep many people from regularly seeing a dentist. New technology developed by researchers at the University of Leeds that is based on knowledge of how the tooth forms in the first place could soon be providing a pain-free way of tackling the first signs of tooth decay. It uses a peptide-based fluid that is literally painted onto the damaged tooth's surface to stimulate the tooth to regenerate itself.

The fluid developed by researchers in the University of Leeds' School of Chemistry contains a peptide known as P 11-4 that will assemble into fibers under certain conditions. When applied to a tooth, the fluid seeps into the micro-pores that form when the acid produced by bacteria in plaque dissolves the mineral in the teeth.

Unlike another drill-free cavity solution called the DMG cavity infiltration system that uses a gel to open up the pores of a cavity so it can be filled with a resin, once inside the micro-pores the peptide-based fluid spontaneously forms a gel that provides a "scaffold" that attracts calcium and regenerates the tooth's mineral from within to provide natural and pain-free repair of the damaged tooth.

E uma notícia do Blogue da Ponoko, CNC pró Povo!

FurnLab open source CNC August 24

Kickstarter campaign to make production local again

According to Jeffrey Matthias, founder of FurnLab, precision manufacturing is something we should all have access to.

As a part of their recently launched KickStarter campaign, the FurnLab team are unveiling plans to release a unique production-ready open source CNC machine. This device will complement the existing range of DIY CNC offerings, while taking manufacturing capabilities to the next level in terms of both scale and speed.
So how big is this thing going to be? It’s no table-top device… FurnLab are getting serious here with three proposed units, each with their own very reasonable price point.

$2500 for a 2’x4’ machine
$4000 for a 4’x4’ machine
$7500 for a 4’x8’ machine

All kinds of users and production requirements have been considered, with the machine plans offering a lot more than a just full-size cutting area.
How about this for starters -

Upgradeability: Designed for almost everyone to be able to afford a basic machine, it will be possible to upgrade to a larger size and better components without having to start over from scratch.
Professional Construction: The plans call for robust, all metal parts and quality components.
Detail Options: Limit switches, z-axis positioning system and an emergency stop button.
3rd-Party Systems Compatibility: Each machine will be upgradeable with affordable 3rd-party options for an automatic tool changer and a vacuum hold-down system.

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