5 Works

Data from: The influence of disorder on the exciton spectra in two-dimensional structures

Vladimir Stephanovich
We study the joint effect of disorder and Coulomb interaction screening on the exciton spectra in two-dimensional (2D) structures. These can be van der Waals structures or heterostructures of organic (polymeric) semiconductors as well as inorganic substances like transition metal dichalcogenides. We consider 2D screened hydrogenic problem with Rytova - Keldysh interaction by means if so-called fractional Scrodinger equation. Our main finding is that above synergy between screening and disorder either destroys the exciton (strong...

Data from: Plant – herbivorous beetle networks: molecular characterization of trophic ecology within a threatened steppic environment

Łukasz Kajtoch, Daniel Kubisz, Waldemar Heise, Miłosz A. Mazur & Wieslaw Babik
DNA barcoding facilitates many evolutionary and ecological studies, including the examination of the dietary diversity of herbivores. In this study, we present a survey of ecological associations between herbivorous beetles and host plants from seriously threatened European steppic grasslands. We determined host plants for the majority (65%) of steppic leaf beetles (55 species) and weevils (59) known from central Europe using two barcodes (trnL and rbcL) and two sequencing strategies (Sanger for mono/oligophagous species and...

Stenosis at the beginning of the internal jugular vein compromise outflow through this blood vessel and can alter geometry of the jugular valve located downstream: the results of numerical modeling of blood flow

Marian Simka
Background and Objective. Currently, pathological jugular valves are thought to be the main cause of altered hemodynamics in the internal jugular veins. The alternative interpretation of flow disturbances in these veins is that nozzle-like strictures in their upper parts, for example caused by enlarged bony processes, are the main source of abnormal outflow. This in silico study was aimed at validation of this hypothesis.Methods. Computational fluid mechanics software, COMSOL multiphysics, was used. For numerical validation...

Data from: On the origin of mongrels: evolutionary history of free-breeding dogs in Eurasia

Małgorzata Pilot, Tadeusz Malewski, Andre E. Moura, Tomasz Grzybowski, Kamil Oleński, Anna Ruść, Stanisław Kamiński, Fernanda Fadel, Daniel S. Mills, Abdulaziz N. Alagaili, Osama B. Mohammed, Grzegorz Kłys, Innokentiy M. Okhlopkov, Ewa Suchecka, Wieslaw Bogdanowicz & Fernanda Ruiz Fadel
Although a large part of the global domestic dog population is free-ranging and free-breeding, knowledge of genetic diversity in these free-breeding dogs (FBDs) and their ancestry relations to pure-breed dogs is limited, and the indigenous status of FBDs in Asia is still uncertain. We analyse genome-wide SNP variability of FBDs across Eurasia, and show that they display weak genetic structure and are genetically distinct from pure-breed dogs rather than constituting an admixture of breeds. Our...

Plant cover and plant-pollinator interactions in Central European grasslands (Poland/Czech Republic)

Demetra Rakosy, Elena Motivans, Valentin Ştefan, Arkadiusz Nowak, Sebastian Świerszcz, Reinart Feldmann, Elisabeth Kühn, Costanza Geppert, Neeraja Venkataraman, Anna Sobieraj-Betlińska, Anita Grossmann, Wiktoria Rojek, Katarzyna Pochrząst, Magdalena Cielniak, Anika Kirstin Gathof, Kevin Baumann & Tiffany Marie Knight
Complex socio-economic, political and demographic factors have driven the increased conversion of Europe’s semi-natural grasslands to intensive pastures. This trend is particularly strong in some of the most biodiverse regions of the continent, such as Central and Eastern Europe. Intensive grazing is known to decrease species diversity and alter the composition of plant and insect communities. Comparatively little is known, however, about how intensive grazing influences plant functional traits related to pollination and the structure...

Registration Year

  • 2022
  • 2020
  • 2015

Resource Types

  • Dataset


  • Opole University
  • Polish Academy of Sciences
  • Jagiellonian University
  • Helmholtz Centre for Environmental Research
  • University of Padua
  • Centre for Ecology and Hydrology
  • Museum and Institute of Zoology
  • Nicolaus Copernicus University
  • Kazimierz Wielki University in Bydgoszcz
  • German Center for Integrative Biodiversity Research