Results 181 to 190 of about 2,951 (196)

Detached groynes impact on macroplastic transport

Experiments in laboratory channel were conducted in order to investigate the behavior of macroplastic particles in form of cut polypropylene cups flowing through a channel with groynes on one side. In the first scenario groynes were attached to the flume’s wall.
Ł. Przyborowski, G. Gilja, M. Valyrakis
openaire   +3 more sources

Riverine Macroplastics and How to Find Them

2020
<p>Macroplastic (>0.5 cm) pollution in aquatic environments is an emerging environmental risk, as it negatively impacts ecosystems, endangers aquatic species, and causes economic damage. Rivers are known to play a crucial role in transporting land-based plastic waste into the world’s oceans.
Tim van Emmerik, Anna Schwarz
openaire   +1 more source

Rising and settling velocities of macroplastic foils

2022
<p>Plastics accumulate in the environment due to inadequate waste management, and the durability of the material. A better understanding of fundamental plastic behaviour in the aquatic environment is essential to estimate transport and accumulation, which can be used for monitoring, prevention and reduction strategies.
Boaz Kuizenga, Tim van Emmerik, Kryss Waldschläger, Merel Kooi   +3 more
openaire   +1 more source

Monitoring submerged riverine macroplastics using echo sounding

2020
<p>Riverine plastics cause severe global problems, regarding the risk for human health and environmental damage. The major part of the plastic waste that ends up in the oceans is transported via rivers. However, estimations of global quantities of plastics entering the oceans are associated with great uncertainties due to ...
Sophie Broere, Tim van Emmerik, Daniel González-Fernández, Willem Luxemburg, Andrés Cózar, Nick van de Giesen, Matthieu de Schipper   +6 more
openaire   +1 more source

Endless journey of macroplastics in rivers

2020
Rivers are supposed to be the main pathways of plastics from lands into the Ocean (Lebreton et al., 2017; Schmidt et al., 2017). However, there is still a huge lack of knowledge on how riverine litter, including macroplastics, is transferred into the Ocean. Quantitative measurements of macroplastic emissions in rivers even suggest that a small fraction
Tramoy, Romain, Gasperi, Johnny, Colasse, Laurent, Silvestre, Marie, Dubois, Philippe, Noûs, Camille, Tassin, Bruno   +6 more
openaire   +1 more source

Macroplastic deformation resistance of low-carbon steels

Metal Science and Heat Treatment, 1993
On the basis of the results of tests for reducing scrap in producing hardware by cold upsetting it is possible to recommend annealing for granular pearlite.
openaire   +1 more source

Microplasticity and Macroplasticity

Materials Science Forum, 1993
Bing Ye Xu, Quan Lin Jin
openaire   +1 more source

Conceptual framework for exploring riverine macroplastic fragmentation

     Field-based information on the rates of macroplastic fragmentation in rivers is currently mostly unavailable. However, obtaining such data in future research is crucial to understanding the production of secondary micro- and nanoplastics in rivers, the transfer of these harmful particles throughout the natural ...
Maciej Liro, Anna Zielonka, Tim H.M. van Emmerik   +2 more
openaire   +1 more source

Flood type drives river-scale macroplastic deposition

Plastic pollution is considered a global environmental challenge, prompting international regulation efforts such as the UN plastic treaty, a global initiative aimed at addressing the escalating plastic pollution crisis. Rivers with high connectivity to urban areas are particularly exposed to macroplastic pollution.
Louise Schreyers, Rahel Hauk, Nicholas Wallerstein, Adriaan J. Teuling, Remko Uijlenhoet, Martine van der Ploeg, Tim van Emmerik   +6 more
openaire   +1 more source

Introducing RUMBA: Revealing underwater macroplastic pollution using acoustic backscatterIntroducing RUMBA: Revealing underwater macroplastic pollution using acoustic backscatter

Introducing RUMBA: Revealing underwater macroplastic pollution using acoustic backscatter Session: ITS3.19/HS12.4: Advances in plastic pollution monitoring across the Geosphere  The ever-increasing production of (single use) plastics has led to enormous amounts of pollution, threatening ecosystems ...
Nadine Liese, Tim van Emmerik, Kryss Waldschlager, Hoitink Ton   +3 more
openaire   +1 more source