We present a model written in python to evaluate data from comprehensive Kr collection schemes comprising 11 datasets from different monitoring stations around the globe. The model is designed to (1) calculate atmospheric input functions for the application of Kr as a dating tracer and (2) to investigate atmospheric circulation based on a two-box model of the atmosphere. Different functions were implemented, to (1) filter the data, (2) fit polynomials and running means, (3) extrapolate fits from the northern to the southern hemisphere, (4) calculate interhemispheric exchange times and Kr emission rates and (5) export data to a csv file. Although the model is designed to evaluate atmospheric Kr datasets, some functionality and basic concepts can be applied to other dating tracers, like tritium and SF.•Standardized method to systematically analyse atmospheric Kr activity concentration time series for dating water and ice and to investigate atmospheric circulation.•Easily modifiable python script to adapt functions for similar data analysis procedures.
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http://dx.doi.org/10.1016/j.mex.2021.101245 | DOI Listing |
Front Immunol
January 2025
Poultry Institute, Shandong Academy of Agricultural Science, Jinan, Shandong, China.
Heat-stress-induced oxidative and inflammatory responses were important factors contributing to chicken intestinal damage. The purpose of this study was based on the antioxidant and anti-inflammatory activities of Physalis Calyx seu Fructus (Jin Deng Long, JDL) to investigate its efficacy and mechanism in relieving chicken heat stress damage. Primary chicken embryo duodenum cells and 90 30-day-old specific-pathogen-free chicken were randomly divided into control and JDL groups to establish heat stress models and .
View Article and Find Full Text PDFAtmospheric refraction imposes a fundamental limitation on the accuracy and precision of geodetic measurements that utilize electromagnetic waves. For terrestrial observations at optical wavelengths recorded over flat terrain, the vertical temperature gradient controls the bending of the rays thus affecting mostly the vertical angle measurement. The rules of thumb for mitigating these effects (variation ranges and short-term fluctuations) are based on intuition and practitioner experience.
View Article and Find Full Text PDFLispe represents a species-rich genus within the family Muscidae. The current subdivision of Lispe species into species groups is based mainly on adult morphology and ecology, with the only available phylogenetic study based on three molecular markers. Nonetheless, certain species groups remain unclear and the relationships and composition of these groups are still unresolved.
View Article and Find Full Text PDFActa Bioeng Biomech
June 2024
1School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China.
: Brain tissue immersed in cerebrospinal fluid often exhibits complex mechanical behaviour, especially the nonlinear stress- strain and rate-dependent responses. Despite extensive research into its material properties, the impact of solution environments on the mechanical behaviour of brain tissue remains limited. This knowledge gap affects the biofidelity of head modelling.
View Article and Find Full Text PDFPLoS One
January 2025
Chair of Sports Economics and Health Economics, Friedrich Schiller University Jena, Jena, Germany.
States differ significantly in international sports competitions in how they use the resources they have and whether they do so in an efficient manner. In this paper, we investigate the efficiency of the nations from the so-called "Global South", in total 52 states, during the 2000-2024 Summer Olympics. By doing this, our paper is the first using the Bayesian stochastic frontier analysis for exploring the performance of the states of the Global South.
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