'Low salt content' presentation slideshows

Deep Heat Ultrasound & Diathermy

Deep Heat Ultrasound & Diathermy. Ultrasound. Ultrasound is the most commonly used deep heating modality in use today. Penetration is between 3-5 cm. Acoustical energy, not electromagnetic as most other units frequency is between .8 and 3 MHz (audible f= 15-20,000 Hz). Thermal

835 views • 42 slides

Environmental Science: Toward a Sustainable Future Richard T. Wright

546 views • 31 slides

Growing Media

Growing Media . Why soilless. Physical properties Aeration Drainage Water holding capacity Support Chemical properties. Media Mix. Annuals Fafard 3B, Pro-Gro GPX, Pro-Mix BX Foliage & Hanging Baskets Fafard 3B, Metro 400, Pro-Mix BX Seedling

806 views • 20 slides

287 views • 17 slides

Towards a Better Design of Micro-Catchment Water Harvesting Schemes.

Towards a Better Design of Micro-Catchment Water Harvesting Schemes. By Dave Best. Direct rainwater harvesting from micro-catchment schemes (within field catchment systems). Overland flow harvested from a short catchment. 1-30 metres.

1.52k views • 16 slides