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A Vacuum Ultraviolet (UV) Photoreactor-Based Flow Droplet Digestion for Determination of Arsenic and Mercury in Blood by Atomic Fluorescence Spectrometry.
Anal Chem
January 2025
Key Laboratory of Green Chemistry & Technology of MOE, College of Chemistry, Sichuan University, Chengdu, Sichuan610064, China.
It is still challenging to perform a high-throughput digestion on limited amounts of sample prior to elemental analysis by atomic spectrometry. Herein, a photochemical reactor consisting of a quartz tube inserted into a low-pressure mercury lamp was used to fabricate a flow droplet photodigestion (FD-PD) device for the high-throughput digestion of small amounts of samples. A mixture containing 20 μL of blood sample, 20 μL of HO, and 10 μL of HNO was pumped and passed through the reactor before its online analysis by hydride generation atomic fluorescence spectrometry (HG-AFS).
View Article and Find Full Text PDFTunneled Pleural Catheters: An Effective Nonsurgical Alternative for Nonexpandable Lung in Chronic Pleural Infection.
J Bronchology Interv Pulmonol
January 2025
Division of Thoracic Surgery and Interventional Pulmonology, Beth Israel Deaconess Medical Center, Harvard Medical School.
Background: Open window thoracostomy (OTW) is the standard of care for debilitated patients with chronic pleural infection and nonexpandable lungs (NEL) who are not candidates for major surgical intervention. Tunneled pleural catheters (TPC) offer tremendous treatment potential in this setting based on their efficacy in malignant pleural effusion and NEL. We aim to assess the efficacy, safety, and health care utilization of TPC in this setting.
View Article and Find Full Text PDFResearch on wear and grinding models of high-speed turnouts based on semi-Hertz contact.
Sci Rep
January 2025
School of Mechanical Engineering, Southwest Jiao Tong University, Chengdu, China.
In order to reduce turnout rail wear, the paper establishes a coupled dynamics model and a turnout rail wear model that consider the true profile of the turnout rail, the vehicle's continuous traction force while passing, and the operational resistance. Comparative analysis of various models for predicting turnout rail wear indicates that the wear energy model is better suited for this purpose. The ideal profile update step for the turnout rail is 0.
View Article and Find Full Text PDFTranscranial Direct Current Stimulation Over Bilateral Temporal Lobes Modulates Hippocampal-Occipital Functional Connectivity and Visual Short-Term Memory Precision.
Hippocampus
January 2025
Department of Psychology, University of California, Riverside, California, USA.
Although the medial temporal lobe (MTL) is traditionally considered a region dedicated to long-term memory, recent neuroimaging and intracranial recording evidence suggests that the MTL also contributes to certain aspects of visual short-term memory (VSTM), such as the quality or precision of retained VSTM content. This study aims to further investigate the MTL's role in VSTM precision through the application of transcranial direct current stimulation (tDCS) and functional magnetic resonance imaging (fMRI). Participants underwent 1.
View Article and Find Full Text PDFSustaining women's empowerment for development in resource-limited settings: an exploratory qualitative approach.
Front Health Serv
December 2024
Health Research and Technology Transfer Directorate, South Ethiopia Region Public Health Institute, Jinka, Ethiopia.
Background: Women's empowerment is one of the fundamental issues for attaining sustainable development goals crossing multiple dimensions. In Ethiopia, Women's Development Network (WDN), a network of women, was established in 2010 with development aims. Ensuring women's empowerment critically needs collective efforts of platforms such as WDN.
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