Results 21 to 30 of about 109,525 (254)

Cotton Gin Stand Machine-Vision Inspection and Removal System for Plastic Contamination: Hand Intrusion Sensor Design

AgriEngineering, 2023
Plastic contamination in cotton lint poses significant challenges to the U.S. cotton industry, with plastic wrap from John Deere round module harvesters being a primary contaminant. Despite efforts to manually remove this plastic during module unwrapping,
Mathew G. Pelletier, John D. Wanjura, Jon R. Wakefield, Greg A. Holt, Neha Kothari   +4 more
doaj   +1 more source

Degradation of contaminated plastics: a kinetic study

Polymer Degradation and Stability, 1995
The thermal degradation of polypropylene (PP), polyacrylonitrile butadiene styrene (ABS), polyurethane (PU) and polyvinyl chloride (PVC) have been studied in the presence of copper, iron oxide and dirt. The rate constants and kinetic parameters for the degradation processes have been measured using the variable heating rate isoconversion method.
Day, M., Cooney, J. D., MacKinnon, M.
openaire   +3 more sources

Microplastics in the Food Chain

Life, 2021
Currently, microplastics represent a widespread contamination found in almost every part of the environment. The plastic industry has generated waste since the 1950s, which unfortunately now counts in the millions.
Klára Cverenkárová, Martina Valachovičová, Tomáš Mackuľak, Lukáš Žemlička, Lucia Bírošová   +4 more
doaj   +1 more source

Chemical Contaminants from Plastics in the Animal Environment [PDF]

Journal of the American Association for Laboratory Animal Science, 2019
Accidental exposure of our mice to bisphenol A (BPA) from damaged polycarbonate cages 20 y ago provided some of the first evidence of the harmful effects of exposure to this common chemical. Recently we found that housing mice in damaged polysulfone cages resulted in similar harmful effects due to exposure to bisphenol S (BPS).
Galen J, Gorence, Hannah C, Pulcastro, Crystal A, Lawson, Roy R, Gerona, Matthew, Friesen, Tegan S, Horan, Mary C, Gieske, Caroline V, Sartain, Patricia A, Hunt   +8 more
openaire   +2 more sources

Co-contaminants of microplastics in two seabird species from the Canadian Arctic

Environmental Science and Ecotechnology, 2022
Through ingestion and subsequent egestion, Arctic seabirds can bioaccumulate microplastics at and around their colony breeding sites. While microplastics in Arctic seabirds have been well documented, it is not yet understood to what extent these ...
Roxana Sühring, Julia E. Baak, Robert J. Letcher, Birgit M. Braune, Amila de Silva, Cody Dey, Kim Fernie, Zhe Lu, Mark L. Mallory, Stephanie Avery-Gomm, Jennifer F. Provencher   +10 more
doaj   +1 more source

Data-Driven Recyclability Classification of Plastic Waste

Chemical Engineering Transactions, 2021
This work aims to propose a general data-driven plastic waste categorisation procedure that defines their recyclability based on classification into material recycling classes.
Hon Huin Chin , Petar Sabev Varbanov, Dániel Fózer, Péter Mizsey, Jirí Jaromír Klemeš, Xuexiu Jia   +5 more
doaj   +1 more source

Environmental status of (micro)plastics contamination in Portugal

Ecotoxicology and Environmental Safety, 2020
Plastics and microplastics are ubiquitous contaminants in aquatic ecosystems. This critical review is the first attempt at analyzing sources, concentration, impacts and solutions of (micro)plastic litter in Portugal based on all currently available literature. We found that, besides sea-based sources (e.g. shipping, fishing), 5717 t of mismanaged waste
Joana C, Prata, João P, da Costa, Isabel, Lopes, Armando C, Duarte, Teresa, Rocha-Santos   +4 more
openaire   +2 more sources

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

FEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri, Ayaka Nagasato‐Ichikawa, Keita Iida, Shuhei Kimura, Akira Imamoto, Mariko Okada   +5 more
wiley   +1 more source

Epigenetic silencing of the liver‐specific lncRNA LUNAR promotes liver cancer progression via NOTCH activation

Molecular Oncology, EarlyView.
LUNAR is a liver‐specific long noncoding RNA (lncRNA) that is highly expressed in normal liver but becomes epigenetically silenced in hepatocellular carcinoma through promoter hypermethylation. Loss of LUNAR is associated with NOTCH activation, epithelial–mesenchymal transition, and metastasis, whereas restoring LUNAR restrains metastatic progression ...
Se Ha Jang, Hyung Seok Kim, Geum Ok Baek, Moon Gyeong Yoon, Su In Lee, Jee‐Yeong Jeong, Ji Eun Han, Soon Sun Kim, Jae Youn Cheong, Jung Woo Eun   +9 more
wiley   +1 more source

The Practices and Attitudes of Saudi Plastic Surgeons in Managing Contaminated Autologous Grafts

Plastic and Reconstructive Surgery, Global Open, 2022
Background:. The use of autologous grafts is a standard reconstructive option in plastic surgery. The absence of a well-established protocol for decontamination after accidental contamination increases the risk of postoperative infection.
Fahad Aljindan, MBBS, SB-Plast, Fahad Alhumaid, MBBS, Noor H. Allababidi, MBBS, Hatan Mortada, MBBS, Salman Alzaidi, MBBS   +4 more
doaj   +1 more source