possible for others to follow. Used sources http://www.habmigern2003.info/biogas/biogas.html http://www.biogas.psu.edu/Safety.html http://www.oecd.org/dataoecd/28/59/36203835.pdf http://www.scienzagiovane.unibo.it/english/solar-energy/glossary-solar- energy.html http://www.newenergyworldnetwork.com/renewable-energy-news/by- technology/biofuel-biomass/waste-to-energy-plants-gain-traction-in-2010.html http://ph.news.yahoo.com/rtrs/20101209/tbs-rhodia-biogas-7318940.html http://www.renewables-in-school.eu/worksBiogas.htm http://www.greenpowerindia.org/biogas_benefits.htm http://www.inseda.org/Presentation/Biogas-the%20future%20Sustainable %20Energy-Fr%20Mathew.pdf http://www.folkecenter.net/gb/rd/transport/biogas_for_transport/ http://www.fvee.de/fileadmin/publikationen/Workshopbaende/ws2003-2/ws2003- 2_02_04.pdf http://www.emccanada.org/blogs/emcfoodsec/emcfoodsectornetworkbiogasoppor tunities http://jcwinnie
P tä t t t st täst t st rt x, y, z äärts x = f1 (t) y = f2 (t) z = f3 (t) s f1 f2 f3 üs t P s s s s ü t t P s är t t üst tts t P sss õ x = f1 (t) y = f2 (t) õ r = g1 (t) = g2 (t) t öö t rr s = s(t) tts s ssss t r = r(t) Pt s trtr sr õ õr ts õ r sss õ trtr rtrs õrr rtr t rs t s rs F (x, y, z) = 0 G(x, y, z) = 0 ts f (x, y) = 0 rstr rs s stss rr Üt sr t t õrsts s õrs ts s t = const = v rs õr üs ät ts t õrs s ttüt õr r sr t sss s = f (t), s f r r s t = const ts t vk := s t
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