Results 181 to 190 of about 13,502 (252)

Hydrothermal activity generated by impact melt emplacement on the rim of Ritchey crater, Mars. [PDF]

Nat Commun
Zeng L, Horgan BHN.
europepmc   +1 more source

Demonstration of a High‐Resolution Passive Profiler for Characterizing the Distribution of PFAS in Groundwater: A Comparison of Methods in the Field

Groundwater Monitoring &Remediation, EarlyView.
Abstract Characterizing the concentration and mass flux spatial distributions at sites with complex hydrogeologic conditions is critical to evaluate the fate and transport of contaminants, as well as to design effective remediation programs. PFAS (per‐ and polyfluoroalkyl substances)‐contaminated sites are even more complex due to the large number of ...
Morgan Eldridge, Jessica LaFond, Micaela Vavra, Graig Lavorgna, David Lippincott, Paul Hatzinger, Jennifer Guelfo, Todd Anderson, W. Andrew Jackson   +8 more
wiley   +1 more source

The Effect of Potentiostatic Control on the Bioreduction of Hexavalent Chromium Using Bacillus cereus. [PDF]

Microorganisms
Chi H, Feng M.
europepmc   +1 more source

A bristle‐nosed Jurassic ray‐finned fish (Actinopterygii) bears true dermal odontodes on its snout

Journal of Anatomy, EarlyView.
Teeth show extreme diversity, including tooth‐like dermal odontodes or “skin teeth” in many extant fishes. We describe the anatomy of enlarged tubercles on the snout of Redfieldius, an extinct early Jurassic fish. We found that the tubercles in Redfieldius are dermal odontodes that evolved independently from those of living species. Abstract Comparison
Jack Stack, Ben T. Kligman, Maranda L. Stricklin   +2 more
wiley   +1 more source

Author Correction: Tectonic-astronomical interactions in shaping late Paleozoic climate and organic carbon burial. [PDF]

Nat Commun
Wei R, Jin Z, Li M, Yuan S, Hu Y, Dong L, Zhang R, Shi J.   +7 more
europepmc   +1 more source

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

Journal of Petroleum Geology, EarlyView.
ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi, Alan P. Heward, Lorraine B. Eglinton, Steve R. Packer, Darrin T. Stead   +4 more
wiley   +1 more source

Integrated multidisciplinary approach for reducing uncertainty in reservoir characterization of the Bahariya Formation, Berenice Field, Egypt. [PDF]

Sci Rep
Fawzy MN, Salem TM, Helal AN, Sayed Lala AM.   +3 more
europepmc   +1 more source

Determining impact angle from the spatial distribution of shock metamorphism: A case study of the Gosses Bluff (Tnorala) impact structure, Australia

Meteoritics &Planetary Science, EarlyView.
Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews, Auriol S. P. Rae, Thomas Kenkmann, Nicholas E. Timms, Aaron J. Cavosie, Marian B. Holness   +5 more
wiley   +1 more source

How understanding planet Earth became science. [PDF]

Nat Commun
europepmc   +1 more source

Mapping the chronology of an ancient cosmovision: 4000 years of continuity in Pecos River style mural painting and symbolism. [PDF]

Sci Adv
Steelman KL, Boyd CE, Dering JP.
europepmc   +1 more source