Results 101 to 110 of about 42,593 (264)

A new type of macrophytic algae from Permian deposits of the North-East of the Samara region (Locality Russky Baitugan)

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2019
A new species of algae from the formal genus Algites Seward, 1894 — A. samarensis sp. nov. from the Lower Kazanian substage near the village of Russky Baitugan (northeast of the Samara Region) has been described.
M. L. Papernyi
doaj   +1 more source

Molecular dynamics simulations and fluorescence spectroscopy suggest reduced tryptophan‐to‐heme energy transfer facilitates lignin degradation in ClassII peroxidases

open access: yesThe FEBS Journal, EarlyView.
In lignin peroxidase and versatile peroxidase, low FRET from buried Trp to heme promotes long‐range electron transfer (LRET) from substrate to heme. This efficient electron flow is facilitated by reduced FRET competition. This mechanism likely evolved to enable the effective degradation of bulky, high‐redox‐potential lignin that cannot reach the enzyme'
Yi Ren   +6 more
wiley   +1 more source

The Carboniferous-Permian Transition

open access: yes, 2013
Carboniferous; Permian ...
Spencer G. Lucas, William A. DiMichele, James E. Barrick, Joerg W. Schneider and Justin A. Spielmann
core  

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook   +38 more
wiley   +1 more source

Early Permian footprints and facies

open access: yes, 1995
Permian; footprints ...
Spencer G. Lucas and Andrew B. Heckert, eds.
core  

Review of the 2020 Statewide Suitability Survey of ASR and AR for Texas Aquifers

open access: yesGroundwater, EarlyView.
Since publication in 2020, the Statewide Survey of Aquifer Suitability for Aquifer Storage and Recovery Projects or Aquifer Recharge Projects interactive map experience and method have inspired researchers, water providers, and policymakers to explore the potential of aquifer storage and recovery and aquifer recharge in Texas.
Andrea D. Croskrey   +2 more
wiley   +1 more source

Traces of a Permian Seacoast: Prehistoric Trackways National Monument

open access: yes, 2011
Footprints, Fossil New Mexico Prehistoric Trackways National Monument. Paleontology New Mexico Prehistoric Trackways National Monument. Paleontology Permian. Footprints, Fossil. Paleontology. Permian Geologic Period.
Spencer G. Lucas, Matt Celeskey, Sebastian Voigt
core  

The Gondwanan Green Alga Tasmanites sp. in the Permian Lacustrine Deposits of West Timor

open access: yesIndonesian Journal on Geoscience, 2019
This paper discusses palynological research on the Permian lacustrine sediments of West Timor. Ten outcrop samples were collected from a 5 m high cliff.
Eko Budi Lelono
doaj   +1 more source

Phylogenetic Reconstruction of Lung Evolution in Extant Squamata

open access: yesJournal of Zoology, EarlyView.
The Squamata group exhibits remarkable diversity in lung structure. However, a comprehensive understanding of how this variation evolved within the clade is still lacking. To reconstruct the evolutionary history of lungs of living squamates, we conducted comparative phylogenetic analyses using categorized lung traits, such as lung type, respiratory ...
Barbara de Godoi Champini   +2 more
wiley   +1 more source

Seismogeological structure model of the Anabar-Olenek region

open access: yesGeoresursy
The velocity characteristics of the Upper Proterozoic-Phanerozoic sedimentary cover of the AnabarOlenek region were studied, in particular, the bimodal character of the distribution interval P-wave velocities was established.
I. A. Gubin, V. A. Kontorovich
doaj   +1 more source

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