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We study the calorimetric properties and structural relaxation of glassy films using a distinguishable particle lattice model (DPLM). We determine the glass transition temperature versus film thickness from the heat capacity during heating as well as from the local relaxation time. The results based on both approaches are in good agreement with the experimentally observed Keddie-Cory-Jones relation. The thus demonstrated interplay between calorimetric properties and structural relaxation is further corroborated by successfully reconstructing the simulated heat capacity during heat and cooling from the local relaxation times. Our results suggest DPLM as a useful lattice model for studying glassy films.
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http://dx.doi.org/10.1103/PhysRevE.111.015406 | DOI Listing |
Front Nutr
August 2025
College of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China.
Introduction: Fermented buffalo milk products from South Asia remain an underexplored source of microbial diversity with potential health-promoting benefits. This study investigates the probiotic and industrial suitability of lactic acid bacteria (LAB) and non-LAB isolates from traditional Pakistani dairy, addressing gaps in region-specific probiotic discovery.
Methods: Forty-seven bacterial isolates were obtained from fermented buffalo milk products (yogurt and cheese).
Int J Biol Macromol
September 2025
School of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China; School of Resources and Civil Engineering, GanNan University of Science and Technology, Ganzhou, 341000, China.
Herein, organic/inorganic multiple adsorption sites were constructed on halloysite to intensify the selective adsorption performance of the adsorbent for Al(III) in rare earth solutions. The adsorption heat behavior and thermodynamics of the composite for different ion systems were investigated using microcalorimetry. The results showed that chitosan formed a mesoporous membrane on the acid-treated calcined halloysite (HalH) substrate through a strong electron interaction between the nitrogen atom of the amino group and the oxygen atom of SiO structure on HalH.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2025
Department of Bioengineering, Stanford University, Stanford, CA 94305.
Despite periods of permanent darkness and extensive ice coverage in polar environments, photosynthetic ice diatoms display a remarkable capability of living inside the ice matrix. How these organisms navigate such hostile conditions with limited light and extreme cold remains unknown. Using a custom subzero temperature microscope during an Arctic expedition, we present the finding of motility at record-low temperatures in a Eukaryotic cell.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Chemical and Biological Engineering, University of Ottawa, 161 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada.
The processes of thermoforming 2D-printed electronics into 3D structures can introduce defects that impact the electrical performance of conductors, making them more susceptible to thermal failure during high electrical power/current applications on temperature-sensitive substrates. We therefore report the use of a thin-film boron nitride nanotube (BNNT) interlayer to directly reduce heat stress on linear and serpentine metallic traces on polycarbonate substrates thermoformed to 3D spherocylindrical geometries at varying elongation percentages. We demonstrate that the BNNT interlayer helps to improve the electrical conductivity of highly elongated thermoformed 3D traces in comparison to traces on bare polycarbonate.
View Article and Find Full Text PDFLangmuir
September 2025
School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China.
Hydrogen energy is pivotal for driving sustainable development and achieving deep decarbonization; yet, its storage remains a significant challenge. Notably, depleted methane reservoirs can serve as a promising large-scale solution for underground hydrogen storage (UHS). Based on adsorption experiments, Monte Carlo and molecular dynamics methods, the adsorption behavior of H and CH in anthracite and the applicability of five models were discussed.
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