Results 21 to 30 of about 19,968 (263)

Hydrogeochemical characterization of an evaporite karst area affected by sinkholes (Ebro Valley, NE Spain) [PDF]

open access: yes, 2013
The main processes controlling the hydrochemistry of an alluvium-covered evaporite karst area with high sinkhole risk (Ebro Valley, NE Spain) are examined by means of multivariate analyses (Principal Component Analysis and Hierarchical Cluster Analysis),
Acero Salazar, Patricia   +12 more
core   +2 more sources

Anthropogenic pressure on the largest lakes of the River Tywa catchment

open access: yesLimnological Review, 2017
The largest lakes of the River Tywa basin i.e. Strzeszowskie, Dołgie, Swobnica and Dłużec (north-west Poland, West Pomeranian Lakeland) were studied in the period 2008–2013, usually in a six week cycle. The aim of the study was to determine the degree of
Kubiak Jacek   +3 more
doaj   +1 more source

Analysis of Benzo[a]pyrene in Vegetable Oils Using Molecularly Imprinted Solid Phase Extraction (MISPE) Coupled with Enzyme-Linked Immunosorbent Assay (ELISA)

open access: yesSensors, 2014
This paper describes the development of a molecularly imprinted polymer-based solid phase extraction (MISPE) method coupled with enzyme-linked immunosorbent assay (ELISA) for determination of the PAH benzo[a]pyrene (B[a]P) in vegetable oils.
Michael Pschenitza   +3 more
doaj   +1 more source

Thoughts on planning of Tianjin Zhangdaokou seismological observatory

open access: yes地震科学进展, 2020
This paper briefly introduces the history of Zhangdaokou seismological station and analyzes the present situation. The paper also suggests that the station needs to be replanned and renovated.
Boyang Wu   +5 more
doaj   +1 more source

The technological development of drinking water treatment plants in the Czech Republic

open access: yesWater Policy, 2023
Several actors have an impact on the quality of drinking water, but ultimately drinking water treatment plants (DWTPs) play a decisive role in ensuring that water quality complies with public regulations.
Geir Inge Orderud   +6 more
doaj   +1 more source

Suaeda foliosa Moq. (Caryophyllales: Amaranthaceae) first record of the genus and species for Valparaíso Region, Chile [PDF]

open access: yes, 2015
Indexación: Web of Science; Scielo.BACKGROUND: The purpose of this paper is to present the finding of Suaeda foliosa in El Yali National Reserve, Chile.
Contreras-López, Manuel   +1 more
core   +2 more sources

High-Density Microalgae Cultivation in Open Thin-Layer Cascade Photobioreactors with Water Recycling

open access: yesApplied Sciences, 2020
(1) Background: Recycling of water and non-converted nutrients is considered to be a necessity for an economically viable production of microalgal biomass as a renewable feedstock.
Torben Schädler   +6 more
doaj   +1 more source

Validation of hydrogeochemical databases for problems in deep geothermal energy

open access: yesGeothermal Energy, 2018
Hydrogeochemical modelling has become an important tool for the exploration and optimisation of deep hydrogeothermal energy resources. However, well-established software and model concepts are often run outside of its temperature, pressure, and salinity ...
Thorsten Hörbrand   +2 more
doaj   +1 more source

The hydrochemistry and water quality of glacierized catchments in Central Asia: A review of the current status and anticipated change

open access: yesJournal of Hydrology: Regional Studies, 2021
Study region: Glacierized catchments in Central Asia Study focus: The literature on hydrochemistry and water quality was reviewed to identify gaps in knowledge required to understand and quantify the impacts of climate change and deglacierization.
Vadim Yapiyev   +5 more
doaj   +1 more source

Production of redox-active-reactive filter material from charcoal

open access: yesNext Materials
The surficial and textural features of a pyrogenic carbonaceous material (charcoal) was modulated with acidic Piranha solution (i.e., 1:3 30% H2O2 to H2SO4) to produce a redox-active adsorbent for the simultaneous adsorption and reduction of Cr(VI) in ...
Nurudeen Abiola Oladoja   +9 more
doaj   +1 more source

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