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The efficacy of fractional CO laser with or without triamcinolone acetonide or 5-fluorouracil in the treatment of early postburn hypertrophic scars.
Lasers Med Sci
January 2025
Plastic Surgery Department, Faculty of Medicine, Tanta University, Tanta, Egypt.
Hypertrophic scars (HTSs) are the result of an abnormal healing process resulting from burns and other severe traumas. The symptoms of that condition include skin irritation, discomfort, and itching. This study aimed to assess the efficacy of fractional carbon dioxide (CO) laser therapy alone or with triamcinolone or 5-fluorouracil (FU) in the treatment of early post-burn hypertrophic scars (HTSs) that develop during the first 6 months after the injury.
View Article and Find Full Text PDFHydroxysilylene (HSi-OH) in the gas phase.
J Chem Phys
January 2025
Ideal Vacuum Products, LLC, 5910 Midway Park Blvd. NE, Albuquerque, New Mexico 87109, USA.
The hydroxysilylene (HSiOH) molecule has been spectroscopically identified in the gas phase for the first time. This highly reactive species was produced in a twin electric discharge jet using separate precursor streams of 16O2/18O2 and Si2H6/Si2D6, both diluted in high pressure argon. The strongest and most stable laser induced fluorescence (LIF) signals were obtained by applying an electric discharge to each of the precursor streams and then merging the discharge products just prior to expansion into vacuum.
View Article and Find Full Text PDFComparative study between fractional CO laser (10,600 nm) and microneedling in treatment of morphea: dermoscopic and histopathological evaluation.
Arch Dermatol Res
January 2025
Dermatology and Venereology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt.
Morphea is a chronic inflammatory fibrosing disorder. Since fibrosis is the hallmark of both scars and morphea, our attention was raised for the possible use of Fractional Ablative CO lasers and microneedling as treatment modalities for morphea. To compare the efficacy and safety of Fractional Ablative CO lasers and microneedling in the treatment of morphea.
View Article and Find Full Text PDFAlopecia areata treated using CO fractional laser with different parameters.
Lasers Med Sci
January 2025
Guangzhou Institute of Dermatology, Guangzhou, China.
Since the introduction of CO fractional laser in dermatology, multiple clinical evidences have shown its effectiveness in treating alopecia areata(AA). However, the extent of efficacy remains under-researched, with a lack of extensive and large-scale comparisons, which is a topic of global discussion. We present a case of a 13-year-old male child with AA.
View Article and Find Full Text PDFSqueezed dual-comb spectroscopy.
Science
January 2025
Department of Electrical, Computer and Energy Engineering, University of Colorado Boulder, Boulder, CO, USA.
Optical frequency combs have enabled unique advantages in broadband, high-resolution spectroscopy and precision interferometry. However, quantum mechanics ultimately limits the metrological precision achievable with laser frequency combs. Quantum squeezing has led to significant measurement improvements with continuous wave lasers, but experiments demonstrating metrological advantage with squeezed combs are less developed.
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