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Regiomontanus's Paduan lecture of 1464, the Byzantine intellectual heritage and the Graeco-Arabic roots of astronomical studies in early modern Italy.
Br J Hist Sci
December 2024
Department of the History of Science, School of Humanities, Tsinghua University, China.
The inaugural lecture, or oration, delivered by Regiomontanus at the University of Padua in 1464 is deemed a document of remarkable significance in the history of science. Although it has attracted much scholarly attention, few efforts have been directed towards identifying the traces of Byzantine influence it might carry; that is to say, the extent to which Regiomontanus might have been influenced by the views of his patron, Bessarion. This paper responds to the need for such a study, arriving at the following conclusions.
View Article and Find Full Text PDFTheory and classification of mass extinction causation.
Natl Sci Rev
January 2024
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences-Wuhan, Wuhan430074, China.
Theory regarding the causation of mass extinctions is in need of systematization, which is the focus of this contribution. Every mass extinction has both an ultimate cause, i.e.
View Article and Find Full Text PDFOn Simon Mayr's alleged discovery of Jupiter's satellites.
Ann Sci
October 2024
Società Astronomica Italiana, Florence, Italy.
In 1614, the German astronomer Simon Mayr published his claim about the discovery of Jupiter's satellites. In his treatise , Mayr made his assertion in a convoluted but unequivocal manner, earning resentment from Galileo Galilei, who published his harsh protest in 1623 in . Though Galileo's objections were fallacious in some respects, and though numerous scholars took to the field to prove Mayr's claim, none ever really succeeded, and the historical evidence remains to Mayr's detriment.
View Article and Find Full Text PDFStellar initial mass function varies with metallicity and time.
Nature
January 2023
School of Astronomy and Space Science, Nanjing University, Nanjing, China.
Most structural and evolutionary properties of galaxies strongly rely on the stellar initial mass function (IMF), namely the distribution of the stellar mass formed in each episode of star formation. The IMF shapes the stellar population in all stellar systems, and so has become one of the most fundamental concepts of modern astronomy. Both constant and variable IMFs across different environments have been claimed despite a large number of theoretical and observational efforts.
View Article and Find Full Text PDFSources, enumerations and inactivation mechanisms of four emerging viruses in aqueous phase.
J Water Health
February 2022
Department of Environmental Engineering, Imam Abdulrahman Bin Faisal University, Dammam, KSA E-mail:
Emergence and re-emergence of four types of severely infectious viruses have claimed significant numbers of lives when anthropogenic activities contribute to the mutagenesis of these pathogens and infectivity of these pathogens has been noticeably altered. However, both point and non-point sources can transport these viruses in water treatment and resource recovery facilities (RRF) where the presence of these pathogens in aerosolized form or in suspension can cause astronomical public health concerns. Hence, numerous scientific studies have been reviewed to comprehend the possible inactivation mechanisms of those viruses in aqueous phase where thermal-, photo-, and chemical-inactivation have confirmed their effectiveness in restraining those viruses and inactivation mechanisms are the major focuses to apprehend the quick and cost-effective virus removal process from water and RRF.
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