Installing subsurface tile drain systems in poorly drained claypan soils to improve corn ( L.) yields could potentially increase environmental phosphorus (P) loss through the tile drainage system. The objectives of the study were to quantify the average concentration and loss of ortho-P in tile drain water from a claypan soil and to determine whether managed subsurface drainage (MD) could reduc...

Accurate simulation of agricultural management effects on N loss in tile drainage is vitally important for understanding hypoxia in the Gulf of Mexico. An experimental study was initiated in 1978 at Nashua, Iowa of the USA to study long-term effects of tillage, crop rotation, and N management practices on subsurface drainage flow and associated N losses. The Root Zone Water Quality Model (RZWQM...

this study was undertaken to investigate the feasibility of treating industrial wastewater using soil and plant system. nine cylindrical plastic-lysimeters (60 cm diameter and 100 cm height) equipped with a drain pipe at the bottom were filled by granular sandy-loam soil. sunflower, oat and fescue were planted each in three lysimeters, in order to investigate the effectiveness of plants in lead...

Three different drainage systems were built in a roadside car park located on the outskirts of Oviedo (Spain): two sustainable urban drainage systems (SUDS), a swale and a filter drain; and one conventional drainage system, a concrete ditch, which is representative of the most frequently used roadside drainage system in Spain. The concentrations of pollutants were analyzed in the outflow of all...

Ion concentration polarization (ICP) has been widely studied for collecting target analytes as it is a powerful preconcentrator method employed for charged molecules. Although the method is quite robust, simple, cheap, and yields a high preconcentration factor, a major hurdle to be addressed is extracting the preconcentrated samples without dispersing the plug. This study investigates a 3D fold...

Until the early 19th century, London’s River Thames, contained relatively clean water. Some 200 years before this, Sir Christopher Wren (1632–1723) realised that drainage and sewage disposal would sooner or later prove a major problem in an expanding city. He designed a relevant system; however, this was not constructed and his subsequent work related to prestigious buildings (including St Paul...

introduction: better use of water and soil resources in paddy fields, increase in rice production and farmer's income, installation of subsurface drainage system is necessary. the main goalof these systems, are aeration conditions improvement prevention of water logging, yield increase, land use increase and multiuse of the land. in different countries, installation of subsurface drainage cause...

Life-threatening hypercalcemia in dialysis patients is very unusual. We present a case where life-threatening hypercalcemia in a home hemodialysis patient resulted from a technical mistake. A 46-year-old woman, on home nocturnal hemodialysis, presented to the emergency room with history of altered sensorium, vomiting and sweating, which started 1 h after initiation of dialysis the previous nigh...