Results 61 to 70 of about 232,638 (172)

Formation of Mg‐silicates in the microbial sediments of a saline, mildly alkaline coastal lake (Lake Clifton, Australia): Environmental versus microbiological drivers

open access: yesSedimentology, Volume 72, Issue 5, Page 1518-1547, August 2025.
ABSTRACT Recent interest in Mg‐rich silicate formation stems from its role as a valuable palaeoclimatic indicator in fluvio‐lacustrine environments and its insights into metal geochemical cycling. Traditionally, Mg‐silicate genesis in lacustrine contexts is linked to alkaline or saline conditions in closed, evaporitic basins.
Ramon Mercedes‐Martín   +8 more
wiley   +1 more source

Macrofaunal contributions to benthic nutrient fluxes revealed by radium disequilibrium

open access: yesLimnology and Oceanography, Volume 70, Issue 5, Page 1345-1358, May 2025.
Abstract The benthic flux of nutrients underpins marine food webs, influences conditions for life in the oceans, and contributes to climatic feedback. Estimates of these fluxes' contributions to macro‐ and micronutrient cycles are, however, highly variable, generating significant uncertainty in biogeochemical models.
Isabelle J. Cooper   +2 more
wiley   +1 more source

Left-right asymmetric expression of dpp in the mantle of gastropods correlates with asymmetric shell coiling [PDF]

open access: yes, 2013
Background: Various shapes of gastropod shells have evolved ever since the Cambrian. Although theoretical analyses of morphogenesis exist, the molecular basis of shell development remains unclear.
Asami, Takahiro   +7 more
core   +5 more sources

Gangliogenesis in the Prosobranch Gastropod Ilyanassa obsoleta [PDF]

open access: yes, 1996
We determined that the larval nervous system of Ilyanassa obsoleta contains paired cerebral, pleural, pedal, buccal, and intestinal ganglia and unpaired apical, osphradial, and visceral ganglia.
Leise, Esther M.   +1 more
core   +1 more source

Smithian–Spathian carbonate geochemistry in the northern Thaynes Group influenced by multiple styles of diagenesis

open access: yesThe Depositional Record, Volume 11, Issue 2, Page 616-636, April 2025.
While the Smithian–Spathian boundary carbon isotopic excursion has been traditionally interpreted as capturing global carbon cycle behaviour, recent studies have suggested that at least some Early Triassic carbon isotopic excursions may incorporate influences from authigenic or early diagenetic processes.
Jordan P. Todes   +6 more
wiley   +1 more source

Molluscan Taxonomy [PDF]

open access: yes, 2017
The molluscs belong to the large and diverse phylum Mollusca, which includes a variety of familiar animals well-known as decorative shells or as seafood.
Mohamed, K S, Venkatesan, V, Vidya, R
core  

Cranial anatomy of Acynodon adriaticus and extreme durophagous adaptations in Eusuchia (Reptilia: Crocodylomorpha)

open access: yesThe Anatomical Record, Volume 307, Issue 12, Page 3653-3684, December 2024.
Abstract Acynodon adriaticus, a small eusuchian from the Late Cretaceous of Italy, is known for its well‐preserved cranial and postcranial material. Despite its excellent preservation, many details remain hidden due to the physical overlap between the elements and matrix obliteration.
Marco Muscioni   +5 more
wiley   +1 more source

Biogeochemical Reconstruction of Authigenic Carbonate Deposits at Methane Seep Site off Krishna‐Godavari (K‐G) Basin, Bay of Bengal

open access: yesGeochemistry, Geophysics, Geosystems, Volume 25, Issue 10, October 2024.
Abstract Active and relic marine methane‐seep sites are widely distributed globally and are distinguished by distinctive geology, biogeochemistry, and ecosystems. The discovery of methane‐seep sites in the Krishna‐Godavari (K‐G) basin has created exciting new opportunities for methane‐seep research in the Bay of Bengal.
S. P. K. Pillutla   +7 more
wiley   +1 more source

Improved side-chain torsion potentials for the Amber ff99SB protein force field

open access: yesProteins: Structure, Function, and Bioinformatics, 2010
Recent advances in hardware and software have enabled increasingly long molecular dynamics (MD) simulations of biomolecules, exposing certain limitations in the accuracy of the force fields used for such simulations and spurring efforts to refine these ...
K. Lindorff‐Larsen   +6 more
semanticscholar   +1 more source

Late Ordovician and early Silurian virgianid and stricklandioid brachiopods from North Greenland: implications for a warm‐water faunal province

open access: yesPapers in Palaeontology, Volume 10, Issue 1, January/February 2024.
Abstract An unusually rich and diverse suite of virgianid brachiopods, hitherto poorly known, is systematically described here for the first time from the Ordovician–Silurian boundary interval (late Katian – Aeronian) of North Greenland. The Late Ordovician virgianids comprise typical taxa of the warm‐water Tcherskidium fauna (e.g.
Jisuo Jin   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy