Results 21 to 30 of about 8,452,020 (344)

Materials with ZrCuSiAs-type Structure

open access: yesZeitschrift für Naturforschung B, 2008
Abstract The discovery of high-temperature superconductivity in the fluoride-doped arsenide oxides REFeAs(O1−xFx) (RE = early rare earth element) with transition temperatures as high as 55 K has led to a true renaissance in superconductivity research.
Pottgen, Rainer, Johrendt, Dirk
openaire   +2 more sources

On the taxonomic validity of Indian ground spiders: II. Genera Drassyllus Chamberlin, 1922 and Nodocion Chamberlin, 1922 (Araneae: Gnaphosidae)

open access: yesEuropean Journal of Taxonomy, 2020
Indian species of Drassyllus and Nodocion are revised, mostly based on the type material available in the National Zoological Collection, Zoological Survey of India, Kolkata.
Pradeep M. Sankaran   +2 more
doaj   +1 more source

The Use of Diatomite as a Catalyst Carrier for the Synthesis of Carbon Nanotubes

open access: yesNanomaterials, 2022
In this article, multiwalled carbon nanotubes (MWCNTs) have been synthesized on the surface of a diatomite mineral impregnated with transition metal salts using a propane-butane mixture in a chemical vapor deposition reactor at atmospheric pressure.
Meruyert Nazhipkyzy   +8 more
doaj   +1 more source

Material Type Recognition of Indoor Scenes via Surface Reflectance Estimation

open access: yesIEEE Access, 2022
There are fundamental difficulties in obtaining material type of an arbitrary object using traditional sensors. Existing material type recognition methods mostly focus on color based visual features and object-prior.
Seokyeong Lee   +3 more
doaj   +1 more source

Euploea dorippus Klug, 1845: species, semispecies, subspecies, junior subjective synonym of Danaus chrysippus chrysippus (Linnaeus), and/or form – what does Klug’s dorippus represent? (Lepidoptera: Nymphalidae, Danainae) [PDF]

open access: yesNota Lepidopterologica, 2020
The type material of the available name Euploea dorippus Klug, 1845, originated from northern Sudan, an area that lies beyond the core zone of the semispecies or subspecies currently known as Danaus chrysippus dorippus, and the description did not ...
Richard I. Vane-Wright
doaj   +3 more sources

Contribution to the Knowledge of the Genus Proceratium Roger (Hymenoptera: Formicidae: Proceratiinae) in the New World

open access: yesSociobiology, 2019
The genus Proceratium Roger comprises rare ants that are irregularly distributed in tropical and temperate regions of the world. Despite this global distribution, these ants are rarely collected, likely due to their cryptobiotic lifestyle.
Itanna Oliveira Fernandes   +2 more
doaj   +1 more source

Catalogue of Rangomaramidae (Diptera: Bibionomorpha) types housed in the collection of the Museu de Zoologia da Universidade de São Paulo, Brazil [PDF]

open access: yesPapéis Avulsos de Zoologia, 2020
This paper provides a catalogue of the type specimens of Rangomaramidae (Diptera: Bibionomorpha) held in the collection of the Museu de Zoologia da Universidade de São Paulo, Brazil (MZUSP).
Rafaela Lopes Falaschi   +2 more
doaj   +1 more source

Numerically Modeling the First Peak of the Type IIb SN 2016gkg [PDF]

open access: yes, 2017
Many Type IIb supernovae (SNe) show a prominent additional early peak in their light curves, which is generally thought to be due to the shock cooling of extended hydrogen-rich material surrounding the helium core of the exploding star.
Arcavi, Iair   +5 more
core   +3 more sources

Type material of Adelomelon indigestus von Ihering, 1908 (Gastropoda, Volutidae) [PDF]

open access: yesBiotemas, 2005
Adelomelon indigestus von Ihering, 1908 is known to be a synonym of Adelomelon beckii (Broderip, 1836) but the taxonomic status of its type material was not previously clear. The specimens cited in the original description of A.
Inga Ludmila Veitenheimer-Mendes   +1 more
doaj   +2 more sources

Taxonomic review of the genus Adelomelon (Gastropoda; Volutidae), based on type material Revisão taxonômica do gênero Adelomelon (Gastropoda; Volutidae), com base em material-tipo

open access: yesBrazilian Journal of Biology, 2008
The genus Adelomelon Dall, 1906 comprises a group of South American marine gastropods. We present updated information on the genus Adelomelon, with emphasis on the status and location of type material, including that of junior synonyms.
F. Wiggers, IL. Veitenheimer-Mendes
doaj   +1 more source

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