Organic pollutants, nano, · The higher ratio of the larger particles collected by the sweeping machine in this study may be due to higher volumes of sand being used for winter street maintenance, lower efficiency of the sweeping machine, as well as its velocity, operational settings andM3 Stuart, · The M3 Stuart, officially Light Tank, M3, was an American light tank of World War II. An improved version entered service as M5. It was supplied to British and other Commonwealth forces under lend-lease prior to the entry of the U.S. into the war. Thereafter, it was used by U.S. and Allied forces until the end of the war. The British service ...Springer, · The need for sustainable intensification of agriculture in the coming decades requires a reduction in nitrogen (N) fertilization. One opportunity to reduce N application rates without major losses in yield is breeding for nutrient efficient crops. A key parameter that influences nutrient uptake efficiency is the root system architecture (RSA). To explore the impact of N availability on RSA and ...International Library of Technology, · Volume 3B: Wood Working; Wood Turning; Patternmaking; Green-Sand Molding; Core Making; Dry-Sand and Loam Work; Cupola Practice; Mising Cast Iron (external scan) Volume 4B: Machine Molding; Foundry Appliances; Malleable Casting; Bras Founding()Timeline of water treatment, · Blaisdell Slow Sand Filter Washing Machine at Yuma, Arizona is invented by Hiram W. Blaisdell as a device to wash sand filters used in the treatment of drinking water.  United States.