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Transformation of Distinct Superatoms to Superalkalis by Successive Ligation of Thymine Nucleobases.
J Phys Chem A
January 2025
Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, People's Republic of China.
The ligation strategy has been widely used in the chemical synthesis of atomically precise clusters. A series of thymine (T)-ligated Al-T ( = Be, Al, C; = 1-5) complexes have been studied to reveal the effect of DNA nucleobase ligands on the electronic structures of different superatoms in the present work. In addition to its protective role, the successive attachment of thymine ligands significantly lowers the adiabatic ionization energies (AIEs) of the studied Al superatoms with filled and unfilled electronic shells.
View Article and Find Full Text PDFHilbert transform analysis of the mouse scotopic electroretinogram reveals two distinct bursts of oscillatory potentials with progressively dimmer flashes.
Doc Ophthalmol
January 2025
Department of Ophthalmology and Visual Sciences, Research Institute of the McGill University Health Centre/Montreal Children's Hospital, 1001 Décarie Boulevard, Glen Site, Block E, Office #EM03238, Montréal, QC, H4A 3J1, Canada.
Purpose: Study the scotopic oscillatory potentials (OPs) in mice over a wide range of flash luminance levels using the Hilbert transform (HT) to extract new features of the high frequency components of the electroretinogram (ERG).
Methods: Scotopic ERGs [Intensity: - 6.3 to 0.
Aging women in Russia: Between sexless and sexy oldies.
J Women Aging
January 2025
Department of Sociology, European University at St. Petersburg, St Petersburg, Russia.
Women's sexuality as a dimension of embodied identity is shaped and constrained by social norms of gender and age and negotiated by women in complex ways. Discourses of hegemonic bodily normativity ascribe a sexless subjectivity to Russian women in their post-reproductive years, contributing to their social exclusion. At the same time, in modern Russian society a neoliberal concept of "successful active aging" is gradually changing understandings of aging, making later-life sexuality more visible and legitimate.
View Article and Find Full Text PDFCharacteristics and paleoclimate significance of authigenic ferrimagnetic minerals in the Xuancheng red earth, southern China.
Sci Rep
January 2025
School of Earth Sciences, China University of Geosciences, Wuhan, 430074, Hubei, China.
Soil magnetic records in Quaternary red earth (QRE) deposits contain a valuable record of paleoclimate information, providing insights into controls on Earth's climate system in the past and potentially helping to predict its response to perturbations in the future. Here, analysis of the environmental magnetism and mineralogy of the Xuancheng QRE (Anhui Province, South China) shows that magnetic variation was strongly linked to production of authigenic ferrimagnetic minerals such as maghemite. Fine-grained maghemite formed during the weathering-related transformation of iron-bearing illite to vermiculite, generating aggregates of vermiculite or mixed-layer illite-vermiculite.
View Article and Find Full Text PDFReal-Time Monitoring of Electrode Surface Changes in Fast-Scan Cyclic Voltammetry Using Fourier Transform Electrochemical Impedance Spectroscopy.
ACS Omega
January 2025
Department of Biomedical Engineering, Hanyang University, Seoul 04763, Republic of Korea.
Fast-scan cyclic voltammetry (FSCV) is a widely used electrochemical technique to measure the phasic response of neurotransmitters in the brain. It has the advantage of reducing tissue damage to the brain due to the use of carbon fiber microelectrodes as well as having a high temporal resolution (10 Hz) sufficient to monitor neurotransmitter release in vivo. During the FSCV experiment, the surface of the carbon fiber microelectrode is inevitably changed by the fouling effect.
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