Glass formers exhibit a pronounced slowdown in dynamics, accompanied by progressive heterogeneity as they approach the glass transition. There is intense debate over whether the dramatic slowdown is caused by dynamical heterogeneity and whether the enhanced dynamical heterogeneity originates from structural causes. However, the connection between dynamical heterogeneity and the spatial distribution of the single-particle free volume (a purely static structural quantity) was found to be rather weak, which raises the question of whether dynamic heterogeneity has a purely structural origin. Here, by introducing the concept of local-average free volume, we present numerical evidence that long-time dynamic heterogeneity shows significantly enhanced correlation with the average local free volume over a length scale of a few neighboring shells. Our results resolve the long-standing controversy about whether free volume plays an important role in particle rearrangements associated with the activated hopping relaxation. The concept of "local average" can be applied to other local structural descriptors to better correlate with dynamic heterogeneity in glass-forming liquids.
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http://dx.doi.org/10.1021/acs.jpclett.2c00072 | DOI Listing |
Food Sci Nutr
January 2025
Department of Agricultural Engineering Research, Khorasan Razavi Agricultural and Natural Resources, Research and Education Center AREEO Mashhad Islamic Republic of Iran.
This study investigated the effects of different formulations on the technological and sensory properties of bread. The bread formulation included 9 variations of sourdough treatments and 4 variations of wheat flour and oat flour percentages. Results demonstrated that the highest increase in dough volume occurred in samples containing sourdough made from wheat, oat, , and at 64.
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January 2025
Thoracic Oncology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York City, NY, USA.
Introduction: WT1 often presents on the surface of diffuse pleural mesotheliomas (DPMs) and is an ideal therapeutic target. Galinpepimut-S (GPS), a tetravalent, non-human leukocyte antigen-restricted, heteroclitic WT1-specific peptide vaccine was safe and effective in early phase clinical trials and upregulates T-cell suppressive programmed death-ligand 1 in the tumor microenvironment of other malignancies. A randomized phase 2 study of adjuvant GPS in patients with DPM trended toward improved median overall survival.
View Article and Find Full Text PDFOTO Open
January 2025
Department of Otolaryngology-Head and Neck Surgery, Winship Cancer Institute Emory University Atlanta Georgia USA.
Objective: Complex ablative maxillary and mandibular defects often require osseous free flap reconstruction. Workhorse options include the fibula, scapula, and osteocutaneous radial forearm flap (OCRFF). The choice of donor site for harvest should be driven not only by reconstructive goals but also by donor site morbidity.
View Article and Find Full Text PDFHeliyon
January 2025
Biomedical Engineering Department, College of Engineering and Technologies, Al-Mustaqbal University, Hillah, Iraq.
The optimization of heat transfer in various engineering applications, such as thermal management systems and energy storage devices, remains a crucial challenge. This study aims to investigate the potential of Casson-based Cu-HO nanofluids in enhancing free convection heat transfer within complex geometries. The research examines the free convection heat transfer and fluid flow characteristics of a Casson-based Cu-HO nanofluid within a semi-parabolic enclosure that includes a wavy corrugated cylinder.
View Article and Find Full Text PDFInt J Urol
January 2025
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