نتایج جستجو برای: waterways length
تعداد نتایج: 308991 فیلتر نتایج به سال:
The waterways of South East Queensland, Australia, represent unique and complex ecosystems that have a high conservation value and support major recreational and commercial fisheries. The agricultural districts of the region also contribute significantly to the regional economy and, together with the growing urban areas, are heavily reliant on good quality water supplies. However, the human foo...
In connection with the need to develop and improve measures prevent eliminate oil spills in Lena Basin of inland waterways, article predicts spread pollution over water surface Olenek Bay Laptev Sea. The purpose this study is evaluate parameters products create situational mathematical models necessary for calculation control means (booms skimmers). Relationships were constructed estimate lengt...
Pathogen contamination of waterways is a serious concern in dairy farming areas where livestock waste is applied to agricultural fields. As an alternative, a biodrying composting system dries collected livestock waste, reduces the strong odors, and has been proposed as a means of reducing, and even eliminating pathogens present in the waste. Therefore, the survival of pathogens in a biodrying c...
Grassed waterways placed in high water flow zones substantially reduce erosion in agricultural fields. A recent study proposed a statistical model for waterway planning for a farm in the Outer Bluegrass physiographic region of Kentucky. The logistic regression model identified where channel erosion was likely to occur based on elevation-derived terrain attributes. The objective of this study wa...
Abstract Inland shipping has been struggling with a shortage of skippers for several years. This means, among other things, that smaller vessels disappear and the waterways are no longer used. In addition, it is also difficult inland to compete road transport. time, this will cause reverse modal shift: cargo be brought back from waterway road. However, already dealing lot congestion while poten...
The existence of aquatic weeds in waterways causes several major problems. Some of them are the obstruction of water flow and navigation, island formation, increase of water losses due to evapotranspiration, and difficulty of water arrival to canal ends. This paper aims to discuss the resulting velocity profile changes due to aquatic weeds. Also, it examines the effect of such weeds on the chan...
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