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Novel Collector of a Dodecylpyridinium Chloride Ionic Liquid in the Reverse Flotation Separation of Muscovite from Apatite.
Langmuir
January 2025
Key Laboratory of Green Utilization of Critical Non-Metallic Mineral Resources of Ministry of Education, Wuhan University of Technology, Wuhan 430070, China.
Reverse flotation separation of muscovite from apatite using a dodecylpyridinium chloride (DPDC) ionic liquid as the collector was studied in this work. The microflotation results depicted that DPDC had a strong collecting for muscovite but had a slight collecting for apatite when using phosphoric acid as a depressant for apatite in a weakly acidic pH value pulp, artificial mixture mineral flotation showed that reverse flotation separation of muscovite from apatite can be effectively achieved in the reagent scheme of phosphoric acid/DPDC, and DPDC had a better separation performance in the muscovite/apatite system than DDA. The adsorption measurements indicated that the adsorption amount of DPDC on the apatite surface was less than that of DPDC on the muscovite surface, and the zeta potential results confirmed that a strong interaction occurred between DPDC and the muscovite surface, while an extremely weak interaction occurred between DPDC and the apatite surface in the presence of phosphoric acid at pH ∼ 5.
View Article and Find Full Text PDFDestabilization of Soil Carbon After Saltwater Intrusion in Coastal Agricultural Soils.
Environ Sci Technol
January 2025
Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina 27695, United States.
Saltwater intrusion (SWI) is a concerning issue impacting agricultural production and soil C cycling, which can have a wider effect on the climate. Complex soil processes driving soil C cycling following saltwater intrusion have not yet been fully quantified. Agricultural fields with varying degrees of saltwater intrusion, unaffected control, and native tidal marsh were studied to understand the impacts of saltwater intrusion on soil properties and soil carbon dynamics.
View Article and Find Full Text PDFThe Influence of Structural Factors and Telemedicine on Missed Appointments Among Medicaid-Insured Patients.
J Racial Ethn Health Disparities
January 2025
Valleywise Health, Phoenix, AZ, USA.
Background: Missed clinic appointments disproportionately affect Medicaid-insured patients and residents of socioeconomically deprived neighborhoods. The role of the recent telemedicine expansion in reducing these disparities is unclear. We analyzed the relationship between census tract (CT) poverty level, residential segregation, missed appointments, and the role of telemedicine.
View Article and Find Full Text PDFMultiplexed single-cell imaging reveals diverging subpopulations with distinct senescence phenotypes during long-term senescence induction.
Geroscience
January 2025
Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
Cellular senescence is a phenotypic state that contributes to the progression of age-related disease through secretion of pro-inflammatory factors known as the senescence-associated secretory phenotype (SASP). Understanding the process by which healthy cells become senescent and develop SASP factors is critical for improving the identification of senescent cells and, ultimately, understanding tissue dysfunction. Here, we reveal how the duration of cellular stress modulates the SASP in distinct subpopulations of senescent cells.
View Article and Find Full Text PDFStates Do Not Delineate the "Accepted Medical Standards" for Brain Death/Death by Neurologic Criteria Determination.
Neurocrit Care
January 2025
Division of Neurocritical Care, Departments of Neurology and Neurosurgery, New York University Langone Medical Center, 530 First Avenue, MSB-2-206, New York, NY, 10016, USA.
Background: The Uniform Determination of Death Act requires brain death/death by neurologic criteria (BD/DNC) determination to be in accordance with "accepted medical standards." The medical organizations responsible for delineating these guidelines are only specified statutorily in two states. State health organizations (SHOs) are composed of policy experts and medical professionals who are responsible for addressing medical, ethical, and legislative problems related to health.
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