نتایج جستجو برای: floodwater
تعداد نتایج: 323 فیلتر نتایج به سال:
A new automatic, free and open-source python toolbox for the mapping of floodwater is presented. The output a binary mask at user-specified time point within geographical boundaries. It exploits high spatial (10m) temporal (6 days per orbit over Europe) resolution Sentinel-1 GRD intensity series based on four processing steps. In first step, selection images related to pre-flood (baseline) stat...
Three new insect growth regulators (IGRs) were tested against Culex, Aedes and Psorophora mosquitoes. In the laboratory the 3 IGRs were active in the range of 0.3 to 1.5 ppb against Cx. quinquefasciatus. In field tests, the IGRs fenoxycarb and S-31183 formulations yielded complete control of floodwater mosquitoes at the rates of 0.005 to 0.01 lb AI/acre. In field tests against Cx. tarsalis, S-3...
Landslide disaster is a serious natural hazard next to earthquake and floodwater. It has brought about great losses to the economic and societal development worldwide. Aiming at the characteristics and requirements in the process of landslide treatment, an optimization algorithm of landslide treatment schemes selection is proposed by combining entropy weight grey incidence with DS evidence theo...
Here we establish the timing of major flood events of the central Mississippi River over the last 1,800 y, using floodwater sediments deposited in two floodplain lakes. Shifts in the frequency of high-magnitude floods are mediated by moisture availability over midcontinental North America and correspond to the emergence and decline of Cahokia--a major late prehistoric settlement in the Mississi...
In September 2013, leptospirosis was diagnosed in two Spanish travellers returning from Thailand. The first case walked in floodwater in the Phi Phi Islands in pouring rain: 20 days later he presented with fever and acute hepatitis. The second presented with fever and renal failure 17 days after visiting the islands. These cases remind clinicians to consider leptospirosis in febrile patients wi...
Based on a qualitative case study in An Giang province, Vietnam, we mapped the understanding of ‘Living with Floods’ (LWF) concept and implementation three projects to explain effectiveness water governance Vietnam. We have demonstrated how perceptions LWF differ per government level limits effectiveness. Diverging undermine governance. A framework list indicators are proposed measure floodwate...
Archaeological remains of roads are often neglected in settlement surveys. Because they are found between sites, roads are an important component of the landscape. In this paper, we apply the concept of landscape capital as defined by Harold Brookfield to preColumbian roads in the Amazon region of northeastern Bolivia. Previous studies have documented the importance of raised earthen causeways ...
The roles of NH.-N diffusion, NH.-N oxidation, NO3-N diffusion, and NO3-N reduction in controlling N loss from continuously flooded soil were evaluated in independent experiments. Applied NH,-N moved from zones of high NH4-N concentration to the zones of low NH4-N concentration. The average diffusion coefficient (D) for NH.-N in flooded soil ranged from 0.059 to 0.216 cm" day for different soil...
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