Results 21 to 30 of about 273,409 (312)

A new occurrence of a classic "Árpád-type" mollusc fauna from the Upper Miocene of Kozármisleny, southern Hungary [PDF]

open access: yes, 2013
A classic but very rare “Árpád-type”mollusc assemblage, representing the endemic fauna of the Late Miocene–Early Pliocene Lake Pannon, was discovered in Kozármisleny (near Pécs, southern Hungary).
Berta, Tibor   +4 more
core   +2 more sources

Recent Progress in Heavy Metal Ion Decontamination Based on Metal–Organic Frameworks

open access: yesNanomaterials, 2020
Heavy metals are inorganic pollutants which pose a serious threat to human and environmental safety, and their effective removal is becoming an increasingly urgent issue.
Yajie Chen, Xue Bai, Zhengfang Ye
doaj   +1 more source

Design of an integrated shallow water wave experiment [PDF]

open access: yes, 1997
The experimental design and instrumentation for an integrated shallow-water surface gravity wave experiment is discussed. The experiment required the measurement of the water surface elevation, meteorological parameters, and directional spectra at a ...
Dalton, M. A.   +3 more
core   +1 more source

Wind impacts on suspended sediment transport in the largest freshwater lake of China

open access: yesHydrology Research, 2020
Poyang Lake, the largest freshwater lake in China, is distinguished by complicated suspended sediment (SS) dynamics. Apart from lake currents, wind is an important form of natural disturbance in driving SS transport.
Hua Wang   +4 more
doaj   +1 more source

Alternative Attractors of Shallow Lakes [PDF]

open access: yesThe Scientific World JOURNAL, 2001
Ponds and shallow lakes can be very clear with abundant submerged plants, or very turbid due to a high concentration of phytoplankton and suspended sediment particles. These strongly contrasting ecosystem states have been found to represent alternative attractors with distinct stabilizing feedback mechanisms.
openaire   +3 more sources

Photodegradation of Methylene Blue by TiO2-Fe3O4-Bentonite Magnetic Nanocomposite

open access: yesInternational Journal of Photoenergy, 2015
Fe3O4-bentonite nanoparticles have been prepared by a coprecipitation technique under a nitrogen atmosphere. An aqueous suspension of bentonite was first modified with FeCl2 and FeCl3. TiO2 was then loaded onto the surface of the Fe3O4-bentonite by a sol-
Wei Chen   +4 more
doaj   +1 more source

Quantifying stream phosphorus dynamics and total suspended sediment export in forested watersheds in Vermont [PDF]

open access: yes, 2018
Globally the quantity of reactive phosphorus (P) in soils, streams and groundwater has greatly increased throughout the 20th and early 21st centuries. This phenomenon is problematic in Vermont, evidenced by the repeated cyanobacteria blooms in shallow ...
Ross, Donald   +2 more
core   +2 more sources

The dissipation and risk alleviation mechanism of PAHs and nitrogen in constructed wetlands: The role of submerged macrophytes and their biofilms-leaves

open access: yesEnvironment International, 2019
The role of submerged macrophytes (Vallisneria natans, Hydrilla verticillata and artificial plant) and their biofilms-leaves for the dissipation and risk alleviation mechanism of PAHs (phenanthrene and pyrene) and nitrogen in constructed wetland systems ...
Zhirui Qin   +7 more
doaj   +1 more source

Understanding the Spatial Heterogeneity of CO2 and CH4 Fluxes from an Urban Shallow Lake: Correlations with Environmental Factors

open access: yesJournal of Chemistry, 2017
The spatial variability of carbon dioxide (CO2) and methane (CH4) fluxes across water-air interface in Xuanwu Lake was investigated in two seasons. Due to anthropogenic disturbances, the environmental factors and the fluxes of CO2 and CH4 in lake showed ...
Zhenhua Zhao   +4 more
doaj   +1 more source

Satellite and airborne remote sensing of gross primary productivity in boreal Alaskan lakes

open access: yesEnvironmental Research Letters, 2020
In terrestrial and marine ecosystems, remote sensing has been used to estimate gross primary productivity (GPP) for decades, but few applications exist for shallow freshwater ecosystems.Here we show field-based GPP correlates with satellite and airborne ...
Catherine Kuhn   +9 more
doaj   +1 more source

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