Results 11 to 20 of about 7,599 (216)

Statistical analysis of hydrochemistry and isotopic characterization of groundwater from the Parecis Basin

RBRH, 2021
Knowledge of mechanism controlling the hydrochemistry of groundwater are crucial requirement to understand the hydrochemical evolution and evaluate the water quality of subsurficial water resources.
Marcia Regina Stradioto, Elias Hideo Teramoto, Hung Kiang Chang   +2 more
doaj   +1 more source

Application of the hydrochemistry, stable isotopes and MixSIAR model to identify nitrate sources and transformations in surface water and groundwater of an intensive agricultural karst wetland in Guilin, China.

Ecotoxicology and Environmental Safety, 2022
Karst water as the vital water supply source is generally suffered from NO3- contamination in intensive agricultural areas worldwide. Identifying NO3- sources and transformations is the key for understanding nitrogen pathways, and also for effectively ...
Jun Li, Danni Zhu, Si-Yu Zhang, Guoli Yang, Yi Zhao, Changsong Zhou, Yong-sheng Lin, S. Zou   +7 more
semanticscholar   +1 more source

Crystallization of calcium carbonate in a large-scale push–pull heat storage test in the Upper Jurassic carbonate aquifer

Geothermal Energy, 2020
Crystallization of carbonates is a key process affecting the operation of geothermal facilities and aquifer heat storage systems. The crystals formed in an aquifer heat storage test in the Upper Jurassic carbonate aquifer were investigated at injection ...
Martina Ueckert, Carina Wismeth, Thomas Baumann   +2 more
doaj   +1 more source

Regeneration of Recombinant Antigen Microarrays for the Automated Monitoring of Antibodies against Zoonotic Pathogens in Swine Sera

Sensors, 2015
The ability to regenerate immobilized proteins like recombinant antigens (rAgs) on surfaces is an unsolved problem for flow-based immunoassays on microarray analysis systems.
Verena K. Meyer, Catharina Kober, Reinhard Niessner, Michael Seidel   +3 more
doaj   +1 more source

Simple Generation of Suspensible Secondary Microplastic Reference Particles via Ultrasound Treatment

Frontiers in Chemistry, 2020
In the environment the weathering of plastic debris is one of the main sources of secondary microplastic (MP). It is distinct from primary MP, as it is not intentionally engineered, and presents a highly heterogeneous analyte composed of plastic ...
Elisabeth von der Esch, Maria Lanzinger, Alexander J. Kohles, Christian Schwaferts, Jana Weisser, Thomas Hofmann, Karl Glas, Martin Elsner, Natalia P. Ivleva   +8 more
doaj   +1 more source

Hydrochemistry for the assessment of groundwater quality in the Kathua region, Jammu and Kashmir, India

Applied Water Science, 2022
Groundwater is a vital natural resource in the Kathua region of the Union Territory of Jammu and Kashmir, Northern India, where it is used for domestic, irrigation, and industrial purposes.
B. Kouser, Anjali Bala, O. Verma, M. Prashanth, A. Khosla, Rayees Ahmad Pir   +5 more
semanticscholar   +1 more source

A record of volcanic eruptions over the past 2,200 years from Vostok firn cores, central East Antarctica

Frontiers in Earth Science, 2023
Introduction: The products of volcanic eruptions found in the snow, firn and ice deposits of the polar ice sheets are precious sources of information on the volcanic forcing of the climate system in the recent or remote past.
Arina N. Veres, Alexey A. Ekaykin, Alexey A. Ekaykin, Liudmila P. Golobokova, Tamara V. Khodzher, Olga I. Khuriganowa, Alexey V. Turkeev   +6 more
doaj   +1 more source

Magnetic Bead-Based Colorimetric Immunoassay for Aflatoxin B1 Using Gold Nanoparticles

Sensors, 2014
A competitive colorimetric immunoassay for the detection of aflatoxin B1 (AFB) has been established using biofunctionalized magnetic beads (MBs) and gold nanoparticles (GNPs).
Xu Wang, Reinhard Niessner, Dietmar Knopp   +2 more
doaj   +1 more source

New Experimental Tools to Use Noble Gases as Artificial Tracers for Groundwater Flow

Frontiers in Water, 2022
Labeling groundwater by injecting an artificial tracer is a standard and widely used method to study groundwater flow systems. Noble gases dissolved in groundwater are potentially ideal artificial tracers, as they are not subject to biogeochemical ...
Matthias S. Brennwald, Morgan Peel, Théo Blanc, Théo Blanc, Yama Tomonaga, Rolf Kipfer, Rolf Kipfer, Philip Brunner, Daniel Hunkeler   +8 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)

Sensors, 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, Rudolf Hackenberg, Reinhard Niessner, Dietmar Knopp   +3 more
doaj   +1 more source