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Synthesis of Cr-doped AlO in nanoscale for bio-labels in myocardial cells.
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School of Physics and Optoelectronic Engineering, Guangdong University of Technology, HEMC, Guangzhou, China.
The AlO: Cr light-converting materials were successfully synthesized via co-precipitation, resulting in a grain size ranging from 100 to 400 nm. Under excitation wavelengths spanning from 360 to 650 nm, a distinct near-infrared (NIR) emission at 695 nm was observed. Through optimization, it has been established that a Cr doping concentration of 1.
View Article and Find Full Text PDFEffects of light on biological functions and human sleep.
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January 2025
Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland; Research Cluster Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland; Department of Biomedicine, University of Basel, Basel, Switzerland.
The nonvisual effects of light in humans are mainly conveyed by a subset of retinal ganglion cells that contain the pigment melanopsin which renders them intrinsically photosensitive (= intrinsically photosensitive retinal ganglion cells, ipRGCs). They have direct connections to the main circadian clock in the suprachiasmatic nuclei (SCN) of the hypothalamus and modulate a variety of physiological processes, pineal melatonin secretion, autonomic functions, cognitive processes such as attention, and behavior, including sleep and wakefulness. This is because efferent projections from the SCN reach other hypothalamic nuclei, the pineal gland, thalamus, basal forebrain, and the brainstem.
View Article and Find Full Text PDFNanoparticle-in-Hydrogel Delivery System for the Sequential Release of Two Drugs.
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Background/objectives: Glioblastoma is the most common and lethal primary brain tumor. Patients often suffer from tumor- and treatment induced vasogenic edema, with devastating neurological consequences. Intracranial edema is effectively treated with dexamethasone.
View Article and Find Full Text PDFTheoretical Study of Sphingomyelinases from and Sheds Light on the Evolution of Enzymes Needed for Survival and Colonization.
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Departamento de Biología, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta s/n, Guanajuato 36050, Mexico.
The path to survival for pathogenic organisms is not straightforward. Pathogens require a set of enzymes for tissue damage generation and to obtain nourishment, as well as a toolbox full of alternatives to bypass host defense mechanisms. Our group has shown that the parasitic protist encodes for 14 sphingomyelinases (SMases); one of them (acid sphingomyelinase 6, aSMase6) is involved in repairing membrane damage and exhibits hemolytic activity.
View Article and Find Full Text PDFTunable luminescence in Eu/Sm doped NaYMgVO for WLEDs and optical thermometry.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
College of Chemical and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022 China.
In recent years, it has become a development trend to design multi-application luminescent materials with rare earth ion doping. In this work, a series of Eu/Sm doped self-activated NaYMgVO (NYMVO) phosphors were synthesized through a simple high-temperature solid-state reaction method. Interestingly, due to the energy transfer (ET) from the matrix to the activators, the luminescence color of the phosphors changed from turquoise to orange-red and yellow-green under near-ultraviolet (n-UV) 365 nm excitation.
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