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interessado em eficientes fogões a lenha? verifique o Wood Burning Stoves 2.0 DVD set Kickstarter de Paul Wheaton.

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Tem um dispositivo inovador médica ou e-saúde solução configurações de segmentação em desenvolvimento? ver Inovadoras Organização Mundial da Saúde dispositivos médicos e soluções de saúde em linha para poucos recursos 2013. Fecha 15 de março.

From today's featured article

Wangari Maathai in 2006
As long as there is no trust and confidence that there will be justice and fairness in resource distribution, political positioning will remain more important than service.

Wangari Maathai W, environmental activist, first African woman to receive the Nobel Peace Prize in 2004

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Yeast Cakes from Hops
Yeasts for Baking. Generally when one mentions yeast, aromatic loaves of fresh homemade light bread come to mind. And so they should. Aside from acting as a leavening agent in bakery products, yeast is also the ingredient responsible for the tantalizing aroma that arises during baking.

Though probably today the most commonly known and used are store-bought packages of dried yeast, there are several other different kinds. The recipes that follow show two examples of different ways to make yeast--dry yeast cakes made from hops and an everlasting yeast "starter"--and also how the yeasts are used in making bread.

The dry yeast cakes are made in part by boiling the blossoms of the hop vine. These flowers contain a fragrant yellowish oil called lupulin. The use of this oil as a preservative in beer and as a narcotic drug originated in Germany before Charlemagne. Since then its use has become widespread and the vine cultivated in other nations, including America.

Highlighted project

Terraces and ditches at Petegral

Terraces and ditches at Petregal a Permaculture Demonstration Center in Oaxaca, Mexico.

A windmill is used to power a water pump which fills a swimming pool.
Appropriate technology (AT) is technology that is designed with special consideration to the context of its use - including environmental, ethical, cultural, social, political, and economical aspects of the community it is intended for. With these goals in mind, AT proponents claim their methods require fewer resources, are easier to maintain, and have less of an impact on the environment compared to techniques from mainstream technology, which they contend is wasteful and environmentally polluting.

The term is usually used to describe simple technologies proponents consider suitable for use in developing nations or less developed rural areas of industrialized nations. This form of "appropriate technology" usually prefers labor-intensive solutions over capital-intensive ones, although labor-saving devices are also used where this does not mean high capital or maintenance cost. In practice, appropriate technology is often something described as using the simplest level of technology that can effectively achieve the intended purpose in a particular location. In industrialized nations, the term appropriate technology takes a different meaning, often referring to engineering that takes special consideration of its social and environmental ramifications.

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ENGR 215 Introduction to Design projects – Fall 2010: HBCSL Somoa Hostel: The Fall 2010 semester of Engineering 215 worked with Humboldt Bay Center for Sustainable Living to design and build projects that support a proposed eco-hostel in Humboldt County.

Fall 2010 ENGR 215 Intro to Design Projects - HBCSL
Thermosyphon Solar Shower System
An outdoor shower that utilizes solar energy to heat the water  
Samoa Hostel Truth Tank
Provides greywater treatment system for a satellite solar shower  
Samoa Hostel Wattimus Prime
A metering scheme that monitors the amount of energy used by the visitors  
Can You Feel The Heatloss?
An education display about convection and heat loss  
Samoa Hostel Natural Paints
A natural paint display to educate visitors of the Samoa Hostel  
Pain in the Axle
A bicycle-powered electrical generator that powers a television and DVD player  
Samoa Hostel Windbelt
An array of wind belts that can charge a cell phone  
The Mechanical Munchy-Maker
A mechanical bicycle that generates energy to power a kitchen appliance  
Samoa Hostel Insulation Station
Educates visitors about the effectiveness insulation types and their relative costs  
Samoa Hostel greywater island
Models, designs, and educates guests and implementers of hostel size greywater treatment  


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