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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.

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Open source 3D printers, such as the Rep Rap, are being used to create open source appropriate technologies such as the DremelFuge.

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edit  watch   Visit the Greywater Portal Greywater, sometimes also spelled as graywater, grey water or gray water, is all of the effluent water from a household, such as water discharged from lavatories (bathroom sinks), bathtubs, showers, clothes washers, and laundry trays. Greywater is not wastewater from a sink used for food preparation, or water closet (toilet) wastewater. The water leaving our homes carries nutrients and value. It may also contain pathogens, and/or harsh chemicals and care should be taken with it. However, it is not a great risk compared to blackwater (sewage). Redirecting the water we use for tasks such as showering allows us to reclaim some of that value to grow plants and recharge the water table. It may be necessary to choose our soaps and detergents more carefully, if we use the greywater for watering and fertilizing plants.

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E215 Introduction to Design projects: This gallery lists some of the projects done by Engr215 Introduction to Design taught at Humboldt State University. All semesters taught by Lonny Grafman, unless noted otherwise.

Spring 2012: Friends of the Dunes Design and build educational displays, technologies and infrastructure for the Humboldt Coastal Nature Center   Fall 2011: Flock House Design and build sustainable technologies for mobile art pods interacting throughout NYC   Spring 2011: Locally Delicious Design and build appropriate technology projects for children that promote healthy, local eating   Fall 2010: HBCSL Somoa Hostel Design and build eco-projects to support a hostel being designed at the Samoa Cookhouse   Spring 2010: RCEA Design and build energy education boxes, housed at Redwood Coast Energy Authority to build, for classrooms in Humboldt County   Spring 2010: World Shelters Design, prototype and improve structures by leveraging the resources of Haiti and World Shelters   Fall 2009: CCAT and Network for a Healthy California Design and build appropriate technology projects for CCAT and Network for a Healthy CA   Spring 2009: WaterPod Design and build sustainable technologies to educate and support artists living sustainably on a barge in NYC   Fall 2008: Full Belly Project Design and prototype adaptions to the Universal Nut Sheller   Spring 2008: Discovery Museum Design and build educational flume inserts for the Redwood Discovery Museum   Fall 2007: HBCSL Designing and prototype model hostel cottages for the proposed Humboldt Bay Eco Hostel   Spring 2007: RCEA Design and build energy efficiency displays for the Redwood Coast Energy Authority (Co-taught with Professor Eileen Cashman)   Fall 2006: CCAT Design and prototype educational, appropriate technology, infrastructure models   Fall 2005: Interactive Energy Efficiency Displays Design and build educational energy displays for the Redwood Coast Energy Authority

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• Interview with Vinay Gupta on Expanding Mind
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• Open-Source Solar-Powered 3-D Printers
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• FREE Chaps of Open-Source Lab: How to Build Your Own Hardware and Reduce Research Costs
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• Students Build a School from Waste Products in the Dominican Republic

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