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The influencing factors of cognitive impairment in elderly individuals in Chengdu city: a cross-sectional study based on AD8.
BMC Geriatr
January 2025
Unit 4-Department of Geriatric Medicine, the Fourth People's Hospital of Chengdu, Chengdu City, China.
Background: With the aging of society, cognitive impairment in elderly people is becoming increasingly common and has caused major public health problems. The screening of cognitive impairment in elderly people and its related influencing factors can aid in the development of relevant intervention and improvement strategies.
Methods: In this study, stratified random cluster sampling was used to conduct a cross-sectional survey of elderly individuals aged 65 years in Chengdu, Sichuan Province, through an electronic questionnaire from November 2022 to November 2023.
Optical Phonon Decay and Improved Thermoelectric Efficiency in p-Type MgSb.
ACS Appl Mater Interfaces
January 2025
International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), IIT M Research Park, Chennai 600113, India.
The MgSb-based layered compounds exhibit exceptional thermoelectric properties over a wide temperature range and possess the potential to supplant traditional BiTe modules with reliable and economical MgSb-based thermoelectric devices, contingent upon the availability of a complementary p-type MgSb material with high thermoelectric efficiency comparable to that of n-type MgSb. We provide a simpler method involving the codoping of monovalent atoms (K and Na) at the Mg site of the MgSb lattice to improve the thermoelectric performance of p-type MgSb. K-Na codoping results in a peak power factor of around 0.
View Article and Find Full Text PDFQuadruple-band synglisis enables high thermoelectric efficiency in earth-abundant tin sulfide crystals.
Science
January 2025
Center for Bioinspired Science and Technology, Hangzhou International Innovation Institute, Beihang University, Hangzhou, China.
Thermoelectrics have been limited by the scarcity of their constituent elements, especially telluride. The earth-abundant, wide-bandgap ( ≈ 46 ) tin sulfide (SnS) has shown promising performance in its crystal form. We improved the thermoelectric efficiency in SnS crystals by promoting the convergence of energy and momentum of four valance bands, termed quadruple-band synglisis.
View Article and Find Full Text PDFBackground: The Amyloid-Tau-Neurodegeneration (ATN) biomarker framework for Alzheimer's disease (AD) indicates binary (presence/absence) designations for each type of pathology, without regard for anatomical distribution. Neurodegeneration is designated as positive if atrophy or hypometabolism are found on imaging. However, Clifford Jack et al.
View Article and Find Full Text PDFBackground: Recent advances in automatic face recognition have increased the risk that de-identified research imaging data could be re-identified from face imagery in brain scans.
Method: An ADNI committee of independent imaging experts evaluated 11 published techniques for face-deidentification ("de-facing") and selected four algorithms (FSL-UK Biobank, HCP/XNAT, mri_reface, and BIC) for formal testing using 183 longitudinal scans of 61 racially and ethnically diverse ADNI participants, evaluated by their facial feature removal on 3D rendered surfaces (confirming sufficient privacy protection) and by comparing measurements from ADNI routine image analyses on unmodified vs. de-faced images (confirming negligible side effects on analyses).
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