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Structural Relaxation Time of a Polymer Glass during Deformation.
Phys Rev Lett
May 2024
University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
In order to determine the structural relaxation time of a polymer glass during deformation, a strain rate switching experiment is performed in the steady-state plastic flow regime. A lightly cross-linked poly(methylmethacrylate) glass was utilized and, simultaneously, the segmental motion in the glass was quantified using an optical probe reorientation method. After the strain rate switch, a nonmonotonic stress response is observed, consistent with previous work.
View Article and Find Full Text PDFImaging Histology Correlations of Intraretinal Fluid in Neovascular Age-Related Macular Degeneration.
Transl Vis Sci Technol
November 2023
Department of Ophthalmology and Visual Sciences, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
Purpose: Fluid presence and dynamism is central to the diagnosis and management of neovascular age-related macular degeneration. On optical coherence tomography (OCT), some hyporeflective spaces arise through vascular permeability (exudation) and others arise through degeneration (transudation). Herein we determined whether the histological appearance of fluid manifested this heterogeneity.
View Article and Find Full Text PDFGel nail polish as an alternative to traditional coverslip sealants: A quick solution to a sticky situation.
MethodsX
December 2023
Department of Neurology & Neurosurgery, Montreal Neurological Institute, 3801 Rue University, McGill University, Montréal, QC, Canada H3A 2B4.
A widespread protocol to seal coverslips on a microscope slide for histological analysis utilizes air-drying nail polish. Nail polish is applied to glue the coverslip in place and prevent the leakage of mounting media. Air drying takes time, typically overnight, and generates an unpleasant smell.
View Article and Find Full Text PDFDegradable, Ultraviolet-Crosslinked Pressure-Sensitive Adhesives Made from Thioester-Functional Acrylate Copolymers.
Angew Chem Int Ed Engl
August 2023
School of Chemistry & Chemical Engineering, University of Surrey, Guildford, GU2 7XH, UK.
Pressure-sensitive adhesives (PSAs) are made from soft, irreversibly lightly crosslinked polymers. Even after removal from surfaces, they retain insoluble networks which pose problems during the recycling of glass and cardboard. Herein, degradable PSAs are presented that provide the required performance in use but have networks that can be degraded after use.
View Article and Find Full Text PDFFirst Report of Botryosphaeria dothidea Causing Stem Blight of Dioscorea oppositifolia in China.
Plant Dis
January 2023
Mycotoxin and Molecular Plant Pathology, Laboratory,, Agricultural University of Hebei, No.2596 Lekai south street, baoding, hebei, China, 071001;
Dioscorea oppositifolia Thunb. (Chinese yam) is one of the traditional foods and medicinal plants in China. It has nutritional and medicinal value and plays an important role in treatment of diabetes and hypertension.
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