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- 20:19, 16 April 2010 4ak25 talk contribs uploaded File:MECH 425 - Dimensions of four treadle pumps.jpg (Table taken from Chigerwe, J. et al. (2004). Low head drip irrigation kits and treadle pumps for smallholder farms in Zimbabwe: a technical evaluation based on laboratory tests. Physics and Chemistry of the Earth , 1049-1059., dimensions themselves are op)
- 20:12, 16 April 2010 4ak25 talk contribs uploaded File:MECH 425 - Treadle pump basic components.jpg
- 18:43, 16 April 2010 4ak25 talk contribs uploaded File:MECH 425 - Desirable features.jpg
- 09:17, 16 April 2010 4ak25 talk contribs uploaded File:Specific Weight.jpg
- 09:13, 16 April 2010 4ak25 talk contribs uploaded File:New Dawn Engineering Treadle Pump.jpg
- 09:11, 16 April 2010 4ak25 talk contribs uploaded File:Bangladesh treadle pump.jpg
- 09:09, 16 April 2010 4ak25 talk contribs uploaded File:Swiss concrete pedalpump.jpg
- 09:05, 16 April 2010 4ak25 talk contribs uploaded File:MECH 425 - Using mechanical advantage.jpg
- 09:04, 16 April 2010 4ak25 talk contribs uploaded File:Net Positive Suction Head a.jpg
- 09:01, 16 April 2010 4ak25 talk contribs uploaded File:MECH 425 - Mechanical advantage.jpg
- 19:55, 15 April 2010 4ak25 talk contribs uploaded File:MECH 425 - Sample of treadle pumps in Africa.jpg (taken from Food and Agriculture Organization, United Nations. (2002, January). Briefing Note on Treadle Pumps. Retrieved April 4, 2010, from Water Conservation and Use in Agriculture: http://www.wca-infonet.org/servlet/BinaryDownloaderServlet?filename=101)
- 17:29, 15 April 2010 4ak25 talk contribs uploaded a new version of File:MECH 425 - Treadle pump operating principles.jpg (Adapted from Kay and Brabben, 2000 from Kedge, 2001. Available from http://www.wca-infonet.org/servlet/CDSServlet?status=ND0yNjkwLjc5NjMmNj1lbiYzMz1kb2N1bWVudHMmc2hvd0NoaWxkcmVuPXRydWUmMzc9aW5mbw~~#koinfo )
- 16:46, 15 April 2010 4ak25 talk contribs uploaded File:MECH 425 - Treadle pump operating principles.jpg (available online through the WCA: http://www.wca-infonet.org/servlet/CDSServlet?status=ND0yNjkwJjY9ZW4mNTU9MjEmMzM9KiZzaG93Q2hpbGRyZW49dHJ1ZSYzNz1rb3M~#relateds)
- 04:39, 15 March 2010 4ak25 talk contribs uploaded a new version of File:Mech425 greenITProject Telecommuting ECM.xls (Fixed the $/kWh calculation on the assumptions page. Values used are now for a business that takes electricity at 750 V or less and whose monthly average peak is less than, or predicted to be less than, 50 kW.)
- 21:14, 22 January 2010 User account 4ak25 talk contribs was created