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Новости за 17.06.2024

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Estimating time-varying epidemiological parameters and underreporting of Covid-19 cases in Brazil using a mathematical model with fuzzy transitions between epidemic periods

Plos.org 
En

by Hélder Seixas Lima, Unaí Tupinambás, Frederico Gadelha Guimarães

Our study conducts a comprehensive analysis of the Covid-19 pandemic in Brazil, spanning five waves over three years. We employed a novel Susceptible-Infected-Recovered-Dead-Susceptible (SIRDS) model with a fuzzy transition between epidemic periods to estimate time-varying parameters and evaluate case underreporting. The initial basic reproduction number (R0) is identified at 2.44 (95% Confidence Interval (CI): 2.42–2.46)... Читать дальше...

The effect of self-identified arm dominance on exercising forearm hemodynamics and skeletal muscle desaturation

Plos.org 
En

by Jacob L. Schwartz, Trishawna A. Fongwoo, Robert F. Bentley

The human forearm model is commonly employed in physiological investigations exploring local vascular function and oxygen delivery; however, the effect of arm dominance on exercising forearm hemodynamics and skeletal muscle oxygen saturation (SmO2) in untrained individuals is poorly understood. Therefore, the purpose of this study was to explore the effect of self-identified arm dominance on forearm hemodynamics and SmO2 in untrained individuals during submaximal... Читать дальше...

Research on risk assessment model and simulation of online group polarization in emergencies

Plos.org 
En

by Guoqiang Lu, Fang Liu

This study proposes a framework for the risk structure of group polarization in the online information of sudden public health incidents, as well as the causes and constraints of group polarization distributed in the ternary space. Then, combining the above two and based on the concept of phase change space, a simulation model of group polarization of online information in sudden public health incidents was constructed by reflecting the risk of group polarization... Читать дальше...

Cultural hierarchies in health: Does inherited sociocultural position (biraderi) shape diet and nutrition among British Pakistani children? Protocol for a mixed-methods study

Plos.org 
En

by Komal Bhatia, Hannah Intezar, Parveen Akhtar

This study aims to explore links between biraderi–a form of identity-based social grouping and stratification which cuts across religions among South Asians–and infant and child nutrition among British Pakistanis using data from the Born in Bradford cohort study. The study will entail a mixed-methods approach to (i) develop an operational framework of biraderi for epidemiologic analyses and apply it to longitudinal data from the Born in Bradford cohort study... Читать дальше...

Investigation on uniaxial compression and fracture damage mode of prefabricated parallel double-jointed red sandstone

Plos.org 
En

by Xiaojuan Xie, Zhanxin Liu, Kun Ding, Yajun Xiao, Zhengqi Zhang

As a special type of joint fracture, the fracture evolution characteristics of parallel double joints have important engineering significance for the stability analysis of fractured rock mass. In this work, a new method for calculating stress intensity factor of parallel double-jointed fractures was importantly proposed. Physical uniaxial compression tests were carried out on parallel double jointed red sandstone filled with... Читать дальше...

From global to national: The role of urban agglomerations in China’s new development paradigm

Plos.org 
En

by Chang-chun Gao, Si-qi Chang, Ying-su Wang

Urban agglomerations (UAs), which serve as pivotal hubs for economic and innovative convergence, play a crucial role in enhancing internal circulation and strengthening external linkages. This study utilizes the China city-level multi-regional input-output tables, incorporating the Dagum Gini coefficient and kernel density estimation methods, to perform a thorough quantitative analysis. Disparities within the national and global value chains ("dual... Читать дальше...



New insights into population structure, demographic history, and effective population size of the critically endangered blue shark Prionace glauca in the Mediterranean Sea

Plos.org 
En

by Violaine Dolfo, Emilie Boissin, Matthieu Lapinski, Serge Planes

The blue shark, Prionace glauca, is the most abundant pelagic shark in the open ocean but its vulnerability remains poorly understood while being one of the most fecund sharks. In the Mediterranean Sea, the blue shark is listed as Critically Endangered (CR) by the International Union for Conservation of Nature. The species is facing a strong decline due to fishing, and scientific data regarding its genetic structure and vulnerability are still lacking. Читать дальше...

Rice powder template for hausmannite Mn3O4 nanoparticles and its application to aqueous zinc ion battery

Plos.org 
En

by Nusrat Tazeen Tonu, Parbhej Ahamed, Mohammad Abu Yousuf

In this study, a simple calcination route was adopted to prepare hausmannite Mn3O4 nanoparticles using rice powder as soft bio-template. Prepared Mn3O4 was characterized by Fourier Transform Infra-Red Spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray microanalysis (EDX), Powder X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Brunauer-Emmett-Teller (BET) and Solid state UV-Vis spectroscopic techniques. Читать дальше...

Anthelmintic effects of some medicinal plants on different life stages of Fasciola hepatica: Evidence on oxidative stress biomarkers, and DNA damage

Plos.org 
En

by Mohaddeseh Allahyari, Farnaz Malekifard, Mohammad Yakhchali

Fasciolosis caused by Fasciola hepatica is a major public health and economic problem worldwide. Due to the lack of a successful vaccine and emerging resistance to the drug triclabendazole, alternative phytotherapeutic approaches are being investigated. This study investigated the in vitro anthelmintic activity of Lavender (Lavandula angustifolia) and carob (Ceratonia siliqua L.) essential oils (EOs) against F. hepatica. The in... Читать дальше...

Новости России
Москва

В 2024 году 283,4 тысячи женщин и новорожденных Московского региона получили услуги по родовым сертификатам


Escherichia coli adaptation under prolonged resource exhaustion is characterized by extreme parallelism and frequent historical contingency

Plos.org 
En

by Shira Zion, Sophia Katz, Ruth Hershberg

Like many other non-sporulating bacterial species, Escherichia coli is able to survive prolonged periods of resource exhaustion, by entering a state of growth called long-term stationary phase (LTSP). In July 2015, we initiated a set of evolutionary experiments aimed at characterizing the dynamics of E. coli adaptation under LTSP. In these experiments populations of E. coli were allowed to initially grow on fresh rich media, but where not provided... Читать дальше...

Missing data in amortized simulation-based neural posterior estimation

Plos.org 
En

by Zijian Wang, Jan Hasenauer, Yannik Schälte

Amortized simulation-based neural posterior estimation provides a novel machine learning based approach for solving parameter estimation problems. It has been shown to be computationally efficient and able to handle complex models and data sets. Yet, the available approach cannot handle the in experimental studies ubiquitous case of missing data, and might provide incorrect posterior estimates. In this work, we discuss various ways of encoding... Читать дальше...


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Анна Калинская

Анна Калинская взяла медицинский перерыв в матче первого круга на турнире в Сингапуре






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