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Lamellarity of ultrasound assisted formations of dipalmitoyl-lecithin vesicles.
Ultrason Sonochem
January 2025
Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar tudósok körútja 2, 1117 Budapest, Hungary.
Formation of unilamellae of fully hydrated dipalmitoylphosphatidylcholine (DPPC) was induced by a horn sonicator from multilamellar vesicles and followed by time-resolved synchrotron small angle X-ray scattering and direct visual morphological investigations by the means of transmission electron-microscopy combined with freeze-fracture. Without incubation the ultrasonication causes continuous increasing in temperature and transformation from the gel to rippled gel structures, then reaching the main transition, the formfactor of unilamellar structure appeared. The ultrasonication resulted in different layer formations at the characteristic temperatures of the gel (20 °C), rippled gel (38 °C), and liquid crystalline (45 °C) phases of the system.
View Article and Find Full Text PDFUltrasonication-Induced Preparation of High-Mechanical-Strength Microneedles Using Stable Silk Fibroin.
Polymers (Basel)
November 2024
Department of Pharmaceutics, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
Silk fibroin (SF) is an ideal material for microneedle (MN) preparation. However, long extraction and short storage durations limit its application. Furthermore, MNs prepared from SF alone are easy to break during skin insertion.
View Article and Find Full Text PDFFreeze response indicators in sugarcane (Saccharum spp. hybrids).
Micron
January 2025
Louisiana State University Agricultural Center, Sugar Research Station, 5755 LSU Ag Rd, St Gabriel, LA 70776, United States.
A recent series of extreme weather events in Southern U.S. (2022 winter freeze followed by 2023 summer drought) calls for quantitative markers to expedite the release of climate resilient sugarcane varieties.
View Article and Find Full Text PDFStrong, tough, and freeze-tolerant all-natural cellulose-based ionic conductor enabled by multiscale cellulose networks.
Carbohydr Polym
November 2024
School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Shenzhen 518055, China; Research Centre of Printed Flexible Electronics, Harbin Institute of Technology, Shenzhen 518055, China. Electronic address:
Soft ionic conductors are widely used in flexible electronics. However, the simultaneous enhancement of their mechanical properties and ionic conductivity remains challenging. This paper reports the successful development of a strong and tough cellulose-based ionic conductor with exceptional mechanical properties and high ionic conductivity by in situ dissolution and reorganization of the fiber matrix of filter paper to create a multiscale structure.
View Article and Find Full Text PDFResearch on triaxial compressive mechanical properties and damage constructive model of post-thawing double-fractured quasi-sandstones with different angles.
Heliyon
July 2024
School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China.
Joints and fractures lead to different failure mechanisms in rock masses under different environments. The mechanical properties and failure mechanisms of rocks with fissures are key problems in rock mass engineering. Parallel double-fracture quasi-sandstone specimens with different dip angles were prepared and subjected to triaxial compression tests after a single freeze-thaw cycle.
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