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This Letter reports what we believe to be a novel schlieren approach with adaptive temporal resolution. The fundamental concept of this approach is to fuse an event-based camera and a low-speed frame-based camera to generate high-frame-rate videos by leveraging the strengths of both. Using a novel experimental setup, events and frames are accurately aligned in both space and time.
View Article and Find Full Text PDFHyaluronic acid-based dermal substitute with stromal vascular fraction vs. partial thickness skin grafts for the treatment of intermediate-deep burns of the hand: a retrospective case-control study.
Ann Burns Fire Disasters
December 2024
Division of Plastic and Reconstructive Surgery, Department of Precision and Regenerative Medicine and Jonic Area, University of Bari, Bari, Italy.
Deep intermediate burns of the hand are a challenge for both the functional and aesthetic result. In this study we compare the efficacy of early selective enzymatic escarolysis followed by the application of stromal vascular fraction (SVF) extracted from autologous adipose tissue on a dermal substitute scaffold (DS) versus reconstruction by partial thickness skin grafts (PTSG). We enrolled all patients admitted to our referral Burn Center from September 2020 to January 2022 with deep intermediate burns of the hands: clinical data were collected, then the first group of 4 patients were treated with PTSG surgical reconstruction, and the second group of 7 patients with DS+SVF.
View Article and Find Full Text PDFA Stepwise Reaction Achieves Ultrasmall AgZnSnS Nanocrystals.
ACS Nano
December 2024
Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada.
Pirquitasite AgZnSnS (AZTS) nanocrystals (NCs) are emergent, lead-free emissive materials in the coinage chalcogenide family with applications in optoelectronic technologies. Like many multinary nanomaterials, their phase-pure synthesis is complicated by the generation of impurities, e.g.
View Article and Find Full Text PDFConjugated Polymer-Based Multilayer Thin-Film Triboelectric Nanogenerators via Continuous Layer-By-Layer Coating Process.
ACS Appl Mater Interfaces
January 2025
Department of Mechanical Engineering, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggi-do 17058, Republic of Korea.
This study introduces a flexible and scalable charge-trapping intermediate layer of conjugated polymeric film comprising [PANI/PEDOT:PSS] between the [PVA/PDDA] triboelectric layer and graphene-based [PVA/GNP-PSS] electrode using the layer-by-layer (LbL) assembly method. By varying the deposition layers, the optimal coating layout was identified as 2 and 8 bilayers of intermediate and triboelectric layers, respectively. The triboelectric nanogenerator (TENG) fabricated with this optimal configuration achieved peak output voltage and current of 180 V and 9 μA, respectively, at 3 Hz and 5 N against PDMS.
View Article and Find Full Text PDFA New Synthesis of Enantiopure Amine Fragment: An Important Intermediate to the Anti-HIV Drug Lenacapavir.
J Org Chem
January 2025
Medicines for All Institute, Virginia Commonwealth University, Richmond, Virginia 23284-3068, United States.
Herein, we describe a new seven-step approach to prepare ()-1-(3,6-dibromopyridin-2-yl)-2-(3,5-difluorophenyl)ethan-1-amine (()-) from the inexpensive 2-(3,5-difluorophenyl)acetic acid. The key steps in the sequence include (1) the Weinreb amide-based ketone synthesis to provide an entry point to the core structure; (2) simple functional group transformations to afford the racemic amine -; and (3) dynamic kinetic resolution (DKR) to access the chiral amine ()-. This seven-step process delivered the enantiopure amine ()- in an overall isolated yield of approximately 15%.
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