In this paper, we explore the use of magnetic resonant metamaterials, so called metamagnetics, as dispersive elements for optical pulse shaping. We measure both positive and negative group delay dispersion (GDD) values in a metamagnetic material using the multiphoton interference phase scan (MIIPS) technique and show pulse temporal profiles numerically. The results are compared with finite element models. These GDD properties of metamagnetics, along with previously shown tunability and loss control with gain media, enable their use in ultrashort pulse optical applications.
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http://dx.doi.org/10.1364/OE.20.023082 | DOI Listing |
Nat Prod Res
December 2024
Department of Zoology, GC University, Lahore, Pakistan.
Inhibiting angiogenesis with plant-derived bioactive compounds can inhibit tumour progression. Antiangiogenic potential of was analysed by preparing and analysing ethanolic extracts of by GC-MS and HPLC to identify bioactive components. In-vivo blood vessel formation assays in mice and chorioallantoic membrane assays (CAM) in eggs were employed to assess the antiangiogenic effects.
View Article and Find Full Text PDFZh Nevrol Psikhiatr Im S S Korsakova
December 2024
Novosibirsk State Medical University, Novosibirsk, Russia.
Objective: To evaluate the effectiveness of complex rehabilitation measures using the drug Cortexin in children with neuropsychiatric pathology during a one-year follow-up.
Material And Methods: A promising dynamic examination and treatment of 323 children with neuropsychiatric pathology from the age of 7 days to 1 year, age 3.2±1.
Autism Res
December 2024
Psychiatry and Addictology Department, CIUSSS-NIM Research Center, University of Montreal, Montreal, Quebec, Canada.
Child-directed speech (CDS), which amplifies acoustic and social features of speech during interactions with young children, promotes typical phonetic and language development. In autism, both behavioral and brain data indicate reduced sensitivity to human speech, which predicts absent, decreased, or atypical benefits of exaggerated speech signals such as CDS. This study investigates the impact of exaggerated fundamental frequency (F0) and voice-onset time on the neural processing of speech sounds in 22 Chinese-speaking autistic children aged 2-7 years old with a history of speech delays, compared with 25 typically developing (TD) peers.
View Article and Find Full Text PDFBackground: Understanding site-related factors that influence enrolment within multicenter randomized controlled trials (RCT) may help reduce trial delays and cost over-runs and prevent early trial discontinuation. In this analysis of PROSPECT (Probiotics: Prevention of Severe Pneumonia and Endotracheal Colonization Trial), we describe patient enrolment patterns and examine factors influencing site-based monthly enrolment.
Design: Retrospective analysis of a multicenter RCT.
Reprod Health
December 2024
The George Institute for Global Health, Imperial College London, London, UK.
Conflict-affected regions face severe reproductive health challenges that disproportionately impact adolescent girls and young women (AGYW) and children, who are especially vulnerable due to the breakdown of healthcare systems and limited access to essential services. AGYW are at heightened risk due to restricted access to family planning, prenatal care, and emergency obstetric services, while children face malnutrition, disease outbreaks, and developmental delays. These challenges have profound long-term consequences for both their physical and psychological well-being.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!