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Molecular Design for Dual Circularity: Polyester with Complementary Mechanical and Chemical Recyclability under Mild Conditions.
Angew Chem Int Ed Engl
January 2025
Department of Fibre and Polymer Technology, KTH Royal Institute of Technology 100 44, Stockholm, Sweden.
The plastic waste accumulation requires facile yet effective solutions. Currently mechanical recycling typically leads to downcycling, while the environmental footprint of chemical recycling is often unacceptable. Here, we introduce a dual circularity concept, where rational molecular design paves the way for complementary closed-loop mechanical and chemical recyclability under mild conditions.
View Article and Find Full Text PDFAnatomical left S3 pulmonary segmentectomy using blunt dissection guided by video-assisted thoracic surgery.
Multimed Man Cardiothorac Surg
January 2025
Respiratory Disease Center, Kyoto Katsura Hospital, Kyoto, Japan.
The plane running between two adjacent pulmonary segments consists of a very thin layer of connective tissue through which the pulmonary vein also runs. To perform an anatomically correct segmentectomy, this segmental plane needs to be divided. Before the operation, the locations of vessels and bronchi are confirmed by three-dimensional computed tomography.
View Article and Find Full Text PDFEarthworm inspired lubricant self-pumping hydrogel with sustained lubricity at high loading.
Nat Commun
January 2025
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China.
The development of mechanically robust super-lubrication hydrogel materials with sustained lubricity at high contact pressures is challenging. In this work, inspired by the durable lubricity feature of the earthworm epidermis, a multilevel structural super-lubrication hydrogel (MS-SLH) system, the so-called lubricant self-pumping hydrogel, is developed. The MS-SLH system is manufactured by chemically dissociating a double network hydrogel to generate robust and wrinkled lubrication layer, and then laser etching was used to generate cylindrical texture pores as gland-like pockets for storing lubricants.
View Article and Find Full Text PDFCase report: Improving quality of life through hyaluronic acid-based fillers after orbital cancer treatment.
Front Oncol
December 2024
Department of Pediatrics, Sapienza University, Rome, Italy.
Background: Myoepithelial carcinoma is a very rare yet aggressive tumor in children. Surgical intervention and local radiotherapy often lead to post-therapy complications, affecting both the aesthetic and functional quality of life in survivors. Hyaluronic acid (HA) dermal fillers offer a minimally invasive option to improve the appearance and quality of life for these patients once they are declared tumor-free.
View Article and Find Full Text PDFDon't mind the gap: reframing the Perren strain rule for fracture healing using insights from virtual mechanical testing.
Bone Joint Res
January 2025
Department of Mechanical Engineering & Mechanics, Lehigh University, Bethlehem, Pennsylvania, USA.
Aims: The "2 to 10% strain rule" for fracture healing has been widely interpreted to mean that interfragmentary strain greater than 10% predisposes a fracture to nonunion. This interpretation focuses on the gap-closing strain (axial micromotion divided by gap size), ignoring the region around the gap where osteogenesis typically initiates. The aim of this study was to measure gap-closing and 3D interfragmentary strains in plated ovine osteotomies and associate local strain conditions with callus mineralization.
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