This research note introduces a new global dataset, the Citizenship, Migration and Mobility in a Pandemic (CMMP). The dataset features systematic information on border closures and domestic lockdowns in response to the COVID-19 outbreak in 211 countries and territories worldwide from 1 March to 1 June 2020. It documents the evolution of the types and scope of international travel bans and exceptions to them, as well as internal measures including limitations of non-essential movement and curfews in 27 countries. CMMP can be used to study causes and effects of policy restrictions to migration and mobility during the COVID-19 pandemic. The dataset is available through Cadmus and will be regularly updated until the last pandemic-related restriction has been lifted or become long-term.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7943018 | PMC |
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0248066 | PLOS |
ACS Appl Mater Interfaces
January 2025
Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
Metal halide perovskites (MHPs) are promising materials for radiation detection. Compared with polycrystalline films, single crystals (SCs) have lower defect density, higher carrier mobility, and lifetime. However, the direct synthesis of MHP SCs for large-area flat panel imaging detectors remains challenging.
View Article and Find Full Text PDFInt J Nanomedicine
January 2025
Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.
Purpose: The purpose of this study is to develop an innovative solution for chronic wounds in high-mobility areas, such as joints, where conventional treatments are hindered by passive healing mechanisms and the need for immobilization. By designing a micro-electro-Nanofiber dressing composed of piezoelectric polyvinylidene fluoride (PVDF) integrated with antimicrobial silver nanoparticles (AgNPs), this research aims to address the dual challenges of promoting effective wound healing and maintaining joint mobility.
Methods: Herein, we developed a novel micro-electro-Nanofiber dressing using electrospinning technology, incorporating polyvinylidene fluoride (PVDF) with silver nanoparticles (AgNPs).
J Ethn Migr Stud
November 2024
Institute for Sociology, University of Duisburg Essen, Duisburg, Germany.
The European Union (EU) experienced two major instances of refugee influx: in 2015, refugees, mainly from Syria, Afghanistan and Iraq fled civil war, persecution, and dire conditions in neighbouring countries and in 2022, Ukrainians fled from Russia's full-scale invasion. Fusing theoretical insights on framing and crisification of migration, we ask: How do EU actors frame situations of refugee mass influx? Employing a Discourse Network Analysis, we examine EU representatives' framing of both instances with respect to three analytical foci: (1) who or what they considered to be in crisis, (2) their framing of refugees; and (3) who they saw to be responsible for solving the crisis. We show how, in 2015, EU representatives framed mass displacement predominantly as a crisis at and of Europe's borders, and refugees as threats to Member States' public, economic and cultural security.
View Article and Find Full Text PDFSci Rep
January 2025
Shanxi Provincial Geological Prospecting Bureau, Taiyuan, 030001, China.
In China, a significant amount of coal fly ash is stored or used for landfill reclamation. The contaminants in coal fly ash (CFA) leachate can cause regional soil and groundwater contamination during long-term storage. This paper focuses on a coal gangue comprehensive utilisation power plant in Fenyang City, Shanxi Province, China, where the leaching characteristics of CFA were investigated by leaching tests.
View Article and Find Full Text PDFCarbohydr Polym
March 2025
School of Materials Science and Engineering, Nanjing University of Science & Technology, Nanjing 210094, PR China. Electronic address:
The high-dynamic, high-loading environment in the joint cavity puts urgent demands on the cartilage regenerative materials with shear responsiveness and lubrication. Here, a new type of injectable hydrogel composed of oxidized hyaluronic acid (OHA), adipic dihydrazide-grafted hyaluronic acid (HA-ADH), oxidized chondroitin sulfate (OChs), and decellularized extracellular matrix methacrylate (dECMMA) was fabricated. The aldehyde groups in OHA and OChs reacted with the amino groups in HA-ADH to form a dynamic hydrogel, which was then covalently crosslinked with dECMMA to create a dual-crosslinked hydrogel with sufficient mechanical strength.
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