Results 21 to 30 of about 9,778,559 (291)

Distribution of Diatoms in the Navigable Sections of Beijing-Hangzhou Grand Canal

open access: yesFayixue Zazhi, 2022
ObjectiveTo establish a diatom database by analyzing the quatity, species distribution and differences of diatom in water samples of the whole navigable sections of the Beijing-Hangzhou Grand Canal, to provide a reference for the inference of the ...
WU Jia-li   +7 more
doaj   +1 more source

Data-Driven-Aided Linear Three-Phase Power Flow Model for Distribution Power Systems

open access: yesIEEE Transactions on Power Systems, 2022
Distribution power systems (DPSs) are generally unbalanced, and their loads may have notable static voltage characteristics (ZIP loads). Hence, although many papers have focused on linear single-phase power flow models, it is still necessary to study ...
Yitong Liu, Zheng-Shuo Li, Yu Zhou
semanticscholar   +1 more source

Computing the feasible operating region of active distribution networks: Comparison and validation of random sampling and optimal power flow based methods

open access: yesIET Generation, Transmission & Distribution, 2021
The feasible operating region (FOR) indicates the operation points that an active distribution network can achieve at the interconnection point with the transmission grid when operating flexible assets within it; without disturbing the stability of the ...
D. Contreras, K. Rudion
semanticscholar   +1 more source

Mesoscopic seepage velocity characteristics during heap leaching based on magnetic resonance imaging

open access: yes工程科学学报, 2015
Column leaching seepage processes were detected in a non-contact and non-destructive way by magnetic resonance imaging. Column leaching images were obtained when the flow was stationary and running.
YIN Sheng-hua   +4 more
doaj   +1 more source

Impacts of the Koka hydropower dam on macroinvertebrate assemblages in the Awash River Basin in Ethiopia

open access: yesJournal of Limnology, 2023
The Koka hydropower dam is one of the oldest large dams in Ethiopia. Damming is one of the anthropogenic activities impacting the distribution of aquatic life forms.
Melaku Getachew   +4 more
doaj   +1 more source

Patchy Blooms and Multifarious Ecotypes of Labyrinthulomycetes Protists and Their Implication in Vertical Carbon Export in the Pelagic Eastern Indian Ocean

open access: yesMicrobiology Spectrum, 2022
Labyrinthulomycetes protists are an important heterotrophic component of microeukaryotes in the world’s oceans, but their distribution patterns and ecological roles are poorly understood in pelagic waters.
Ningdong Xie   +9 more
doaj   +1 more source

Palynological richness and evenness: insights from the taxa accumulation curve [PDF]

open access: yes, 2014
Palynology provides the opportunity to make inferences on changes in diversity of terrestrial vegetation over long time scales. The often coarse taxonomic level achievable in pollen analysis, differences in pollen production and dispersal, and the lack ...
Ammann, Brigitta   +2 more
core   +2 more sources

Distribution and diversity of benthic macroinvertebrates in the Mohlapitsi River, South Africa

open access: yesJournal of Freshwater Ecology, 2022
Freshwater ecosystems are facing degradation from human activities in the form of alterations of flow regimes, changes in land-use, and intensive water abstraction, in turn generating adverse effects on biodiversity and ecological functionality ...
M. E. Raphahlelo   +2 more
doaj   +1 more source

Joint Bayesian Inference of Graphical Structure and Parameters with a Single Generative Flow Network [PDF]

open access: yesNeural Information Processing Systems, 2023
Generative Flow Networks (GFlowNets), a class of generative models over discrete and structured sample spaces, have been previously applied to the problem of inferring the marginal posterior distribution over the directed acyclic graph (DAG) of a ...
T. Deleu   +5 more
semanticscholar   +1 more source

Effect of drying dynamics on the functional structure of a fish assemblage from an intermittent river network

open access: yesFrontiers in Environmental Science, 2022
We are living in a fast-changing world promoted by anthropogenic actions and ecosystems’ functioning has been constantly changed. One example is the globally reduction of river flow that can lead to more than 50% of the rivers and streams around the ...
Milena Gonçalves-Silva   +5 more
doaj   +1 more source

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