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We present a classic SEIR model taking into account the daily movements of individuals in different places. The model also takes into account partial confinement of individuals. This model is coupled with a model of protection against the epidemic by the use of masks. We are studying the effects of combined confinement and protection measures on the dynamics of the epidemic. We consider a constant proportion of asymptomatic people. We assume that symptomatic infected people may change their urban travel behavior due to the disease which causes them to travel less to places where they used to move and to stay at home more often. We present a sensitivity study with respect to the parameters. We show that the combination of the use of masks with almost complete release of confinement makes it possible to avoid the occurrence of a secondary peak of the epidemic. The model predicts that a total release of confinement can be successful for an epidemic of [Formula: see text] if on average a proportion of [Formula: see text] of the population wears masks of [Formula: see text] efficacy. However, if [Formula: see text] of the population remains confined, the same goal can be achieved with a proportion of [Formula: see text] of the population wearing masks with efficacy of the order of [Formula: see text].
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http://dx.doi.org/10.1007/s11538-021-00858-8 | DOI Listing |
In Silico Pharmacol
September 2025
Department of Biomedical Sciences, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080 Republic of Korea.
Unlabelled: Colon cancer accounts for the second leading cause of cancer-associated death worldwide. Since the metastasis contributes to its malignancy, targeting the extracellular matrix (ECM) remodeling is critical for its therapy. Most research had focused on the native form of the structural ECM proteins, termed core matrisomes, to find out the relationship of the TME to colon cancer progression.
View Article and Find Full Text PDFAppl Phys B
September 2025
Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
Unlabelled: In the framework of the Argon Power Cycle, millisecond-pulsed hydrogen gas injections into a high-pressure, room temperature nitrogen or argon ambient are investigated. Instantaneous Rayleigh scattering is used to quantify the hydrogen mole fraction in the ensuing jets. A readily available HDEV injector with a straight 0.
View Article and Find Full Text PDFPestic Biochem Physiol
November 2025
National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai'an 271018, PR China. Electronic address: wj
Difenoconazole (DFC) is a commonly used triazole fungicide known for its high efficiency and environmental persistence. A thorough understanding of its environmental behavior, particularly sorption in soil, is critical to obtain a comprehensive assessment of the ecological risk of DFC. In this study, three soils with distinct physicochemical properties (brown soil, cinnamon soil, and fluvo-aquic soil) were used to elucidate the adsorption mechanisms of DFC on soil.
View Article and Find Full Text PDFWater Res
September 2025
Department of Civil and Architecture, School of Engineering, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan. Electronic address:
Ammonia (NH), a naturally occurring disinfectant in wastewater, plays an important role in inactivating pathogens, including viruses. Despite its importance in non-sewered sanitation systems, the inactivation rate constant attributed solely to ammonia ( [Formula: see text] ) remains unclear, owing to the diverse range of disinfection conditions in existing studies. Determining [Formula: see text] is critical for quantifying the contribution of ammonia to viral inactivation and distinguishing it from other environmental factors.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2025
The Rowland Institute at Harvard, Harvard University, Cambridge, MA 02138.
Cryogenic transmission electron microscopy has revolutionized structural biology and materials science. To image below liquid nitrogen temperatures, various liquid helium stages have been constructed but have proven to be complex and unstable, making high-resolution imaging challenging. This problem is even more pronounced in side-entry specimen holders common on modern transmission electron microscopes.
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