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Papers
9 resultsShowing papers from Drexel University
ClearIntake of microplastics by fishes in a floodplain lake of the Curiaú River (Macapá, Amapá, Brazil)
Researchers examined microplastic ingestion in fish from a floodplain lake of the Curiaú River in the Brazilian Amazon, finding microplastics in stomach, intestine, and gill samples with ingestion patterns reflecting both passive and active uptake during normal feeding behavior.
Experimental application of a zero-point charge based on pH as a simple indicator of microplastic particle aggregation
Zero-point charge based on pH was tested as a simple indicator of microplastic aggregation behavior, with results showing it could predict optimal conditions for particle flocculation relevant to water treatment. The approach offers a low-cost alternative to zeta potential measurement for assessing microplastic removal in treatment systems.
In‐Situ Detection of Microplastic Particles on Food Using Hyperspectral Imaging With One‐Dimensional Convolutional Neural Network and Artificial Neural Network
Scientists trained AI models on hyperspectral camera images to detect microplastic particles directly on the surface of raw seafood (tilapia) without needing to isolate or remove the particles first, achieving a 96.3% detection score for 600-micron particles. Current food safety testing for microplastics requires laborious physical separation, making routine screening impractical; this approach could enable rapid, non-destructive screening in food processing facilities. The method represents a practical step toward monitoring microplastic contamination in seafood before it reaches consumers.
Study on the consumption of microplastics by fishes in a floodplain lake of the Curiaú River (Macapá – Amapá, Brazil)
Researchers studied microplastic consumption by fishes in a floodplain lake of the Curiaú River in Macapá, Amapá, Brazil, examining the types and quantities of plastic particles smaller than 5 mm ingested by fish species in this freshwater ecosystem. They found evidence that fish in this Amazonian floodplain lake ingest microplastics when available, documenting the penetration of plastic pollution into remote freshwater food webs.
Microstructure-sensitive investigation of magnesium alloy fatigue
Equitable Research Capacity Towards the Sustainable Development Goals: The Case for Open Science Hardware
This review argues that achieving the United Nations Sustainable Development Goals requires equitable distribution of research capacity globally, advocating for open science hardware as a means to democratize scientific tools beyond improvements to open access data, software, and publications.
Grain-Size-Dependent Grain Boundary Deformation during Yielding in Nanocrystalline Materials Using Atomistic Simulations
Microstructure-sensitive investigation of plasticity and fatigue of magnesium alloys
This dissertation investigated correlations between strain localizations and both macro- and microplasticity in magnesium-based alloys under monotonic and cyclic loading, using multi-scale mechanical testing combined with digital image correlation and acoustic emission. Key findings included the dominant role of twinning in early plasticity and its contribution to fatigue crack incubation through slip-twin interactions and surface morphology changes.
Cruise Report S-217 : scientific data collected aboard SSV Robert C. Seamans, Papeete, Tahiti � Taiohae, Nuku Hiva, Marquesas � Honolulu, Hawaii, 9 May � 14 June 2008
This cruise report documents oceanographic sampling conducted aboard the SSV Robert C. Seamans between Tahiti, the Marquesas, and Hawaii in 2008, covering physical, chemical, biological, and environmental ocean characteristics. The cruise was part of a Sea Education Association semester program that included environmental sampling research.