|
|
|
|
|
Ivan Kostic, Aleksandar Simonovic, Olivera Kostic, Du?an Ivkovic and Dragoljub Tanovic
This paper presents the second stage of a tandem fixed-wing unmanned aerial vehicle (UAV) aerodynamic development. In the initial stage, the UAV was optimized by analyzing its characteristics only in symmetrical flight conditions. Posted requirements wer...
ver más
|
|
|
|
|
|
|
|
|
Dzhema Melkonyan and Sherin Sugathan
Increasing groundwater levels (GWLs) may become one of the most serious issues for the city of Odessa, Ukraine. This study investigated the spatial distribution characteristics and multifractal scaling behaviour of the groundwater-level/-depth fluctuatio...
ver más
|
|
|
|
|
|
|
|
|
Lihua Niu, Rui Chen, Yi Li, Yamei Chen, Wenlong Zhang, Huanjun Zhang and Longfei Wang
Turbidity has been one of the most typical problems in urban rivers, accompanied by eutrophication. Though the colloid is a nonnegligible factor associated with turbidity and nutrient enrichment in urban rivers, the characteristics of nitrogen enrichment...
ver más
|
|
|
|
|
|
|
|
|
Qingtao Zhang, Heng Wang, Zhiqiang Wang, Haoxuan Xie, Tuo Chen and Shuai Guan
Water vapor adsorption on soil, a crucial non-rainfall water resource in arid regions, warrants further experimental investigation, particularly on two typical land surfaces: bare soil and gravel. This study examined the formation characteristics and inf...
ver más
|
|
|
|
|
|
|
|
|
Lijun Jin, Changsheng Yan, Baojun Yuan, Jing Liu and Jifeng Liu
The source area of the Yellow River (SAYR) in China is an important water yield and water-conservation area in the Yellow River. Understanding the variability in rainfall and flood over the SAYR region and the related mechanism of flood-causing rainfall ...
ver más
|
|
|
|