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Morphological and DNA analysis of pollen grains on butterfly individuals reveal their flower visitation history.
Naturwissenschaften
January 2025
Research Center for Integrative Evolutionary Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama, Japan.
Many butterfly species are conspicuous flower visitors. However, understanding their flower visitation patterns in natural habitats remains challenging due to the difficulty of tracking individual butterflies. Therefore, we aimed at establishing a protocol to solve the problem using the Common five-ring butterfly, Ypthima argus (Nymphalidae: Satyrinae).
View Article and Find Full Text PDFNetwork modeling of problematic social media use components in college student social media users.
Front Psychiatry
January 2025
School of Psychology, Zhejiang Normal University, Jinhua, China.
Background: While the constitutive features of problematic social media use (PSMU) have been formulated, there has been a lack of studies in the field examining the structure of relationships among PSMU components.
Method: This study employed network analytic methods to investigate the connectivity among PSMU components in a large sample of 1,136 college student social media users ( = 19.69, = 1.
Improved equivalent optical turbulence method for anisotropic compressible and atmospheric turbulence under different beam transmission distances.
Sci Rep
January 2025
School of Physics, Xidian University, Xi'an, 710071, Shaanxi, China.
The impact of different turbulence on beams can be seen as optical distortions caused by refractive index fluctuations around vortices in turbulence. Therefore, from the perspective of transmission effects, the transmission outcomes of beam in different turbulences can be mutually equivalent. Since the mechanisms of beam propagation in compressible turbulence are not yet fully understood and the relevant theories are not well-established, a preliminary analysis of beam transmission in compressible turbulence is necessary.
View Article and Find Full Text PDFHow a responsive reproduction factor is determinant in a prey-predator dynamics: A numerical and analytical study in a discrete-time model.
Chaos
January 2025
Physics Institute, University of São Paulo, 05508-090 São Paulo, SP, Brazil.
In this work, we investigate the dynamics of a discrete-time prey-predator model considering a prey reproductive response as a function of the predation risk, with the prey population growth factor governed by two parameters. The system can evolve toward scenarios of mutual or only of predators extinction, or species coexistence. We analytically show all different types of equilibrium points depending on the ranges of growth parameters.
View Article and Find Full Text PDFNew Layered Boride NiPtB ( = 0.5) with a Ternary Derivative Structure of MoB.
Inorg Chem
January 2025
Institute of Solid State Physics, TU Wien, A-1040 Vienna, Austria.
A novel ternary boride, NiPtB ( = 0.5), was obtained by argon-arc melting of the elements followed by annealing at 750 °C. It exhibits a new structure type with the space group ( = 2.
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