Passive sampler exchange kinetics in large and small water volumes under mixed rate control by sorbent and water boundary layer.
Sign Up to like & getrecommendations! Published in 2021 at "Environmental toxicology and chemistry"
DOI: 10.1002/etc.4989
Abstract: Exchange kinetics of organic compounds between passive samplers and water can be partly or completely controlled by transport in the sorbent. In such cases diffusion models are needed. A model is discussed that is based… read more here.
Keywords: sorbent water; rate control; water; water boundary ... See more keywords
Determining the Mass Transfer Coefficient of the Water Boundary Layer at the Surface of Aquatic Integrative Passive Samplers.
Sign Up to like & getrecommendations! Published in 2022 at "Environmental science & technology"
DOI: 10.1021/acs.est.1c08088
Abstract: Passive sampling devices (PSDs) offer key benefits for monitoring chemical water quality, but the uptake process of PSDs for hydrophilic compounds still needs to be better understood. Determining mass transfer coefficients of the water boundary… read more here.
Keywords: mass transfer; water boundary; water; determining mass ... See more keywords
Aerial-aquatic robots capable of crossing the air-water boundary and hitchhiking on surfaces
Sign Up to like & getrecommendations! Published in 2022 at "Science Robotics"
DOI: 10.1126/scirobotics.abm6695
Abstract: Many real-world applications for robots—such as long-term aerial and underwater observation, cross-medium operations, and marine life surveys—require robots with the ability to move between the air-water boundary. Here, we describe an aerial-aquatic hitchhiking robot that… read more here.
Keywords: aerial aquatic; air; air water; water boundary ... See more keywords
MNDWI和NDWI指数提取富营养化湖泊水体边界的对比研究 Comparative Study on the Water Index of MNDWI and NDWI for Water Boundary Extraction in Eutrophic Lakes
Sign Up to like & getrecommendations! Published in 2017 at "Advances in Geosciences"
DOI: 10.12677/ag.2017.76074
Abstract: 本研究基于Landsat 8 OLI卫星影像，采用云南省中部地区的5个湖泊，即滇池、抚仙湖、阳宗海、星云湖和杞麓湖作为研究对象，其中滇池、星云湖、杞麓湖是富营养化湖泊，比较了两种水体指数，NDWI和MNDWI提取湖泊水体边界的精确度。结果表明：由于近红外波段能够较好的区分植被和水体，但也带来了藻类覆盖的水域容易被误识别为植被的情况。因此，采用NDWI提取的富营养化湖泊水体面积比实际值偏小，中红外波段对水分含量较为敏感，在富营养化湖泊中采用该指数可以有效的区分陆地和水体，排除藻类的干扰。因此，MNDWI更适合用于富营养化湖泊的水体边界提取。 This study is based on the Landsat 8 OLI satellite images, and uses 5 lakes as sample, which are Dianchi Lake, Fuxian Lake, Yangzonghai Lake, Xingyun Lake and Qilu Lake, there are… read more here.
Keywords: index; eutrophic lakes; water; water boundary ... See more keywords