Results 101 to 110 of about 3,494 (261)

Budding speciation, mitochondrial capture and introgression between surface and cave lineages in the Asellus aquaticus species complex

Cladistics, EarlyView.
Abstract Replicated pairs of ancestral and evolutionarily derived populations provide opportunities to test hypotheses about the deterministic laws of evolution. The Asellus aquaticus species complex is an invertebrate model system with several independent surface‐to‐cave transitions and a complicated and unresolved evolutionary history.
Peter Trontelj, Valerija Zakšek, Anja Palandačić, Hans Recknagel   +3 more
wiley   +1 more source

Crater Dimensions on the Dwarf Planets

The Planetary Science Journal
The icy dwarf planets of Pluto, Charon, and Ceres provide important geologic comparisons for each other as they possess similar gravities and experience impacts of similar velocities compared to larger planets and moons.
Veronica J. Bray, Michael F. Zeilnhofer, S. J. Robbins, P. M. Schenk, Kelsi M. Singer, O. L. White, S. A. Stern, S. D. Benecchi, K. A. Durfey, H. A. Weaver, C. B. Olkin, J. R. Spencer, the New Horizons Geology and Geophysics Investigation Team   +12 more
doaj   +1 more source

Impact Absorption on 3D Printed Mouthguard Material in Selected Printing Angulations

Dental Traumatology, EarlyView.
ABSTRACT Background Sports‐related oral and craniofacial injuries are significant public health problems, and one‐third of these injuries result from sports activities. These injuries affect the quality of life and performance of athletes. Sports mouthguards are recommended to mitigate these injuries.
Siti Salwa Idris, Hiroshi Churei, Chenyuan Li, Thida Aung, Si Thu Kaung, Qiushuang Zhu, Esha Ishrat Jahan   +6 more
wiley   +1 more source

The Seismic Signatures of Recently Formed Impact Craters on Mars. [PDF]

J Geophys Res Planets, 2019
Schmerr NC, Banks M, Daubar I.
europepmc   +1 more source

Influence of Laser Repetition Rate, Fluence and Spot Size on LA‐Q‐ICP‐MS/MS 87Sr/86Sr Precision: Insights from Apatites and Silicate Glasses

Geostandards and Geoanalytical Research, EarlyView.
Key Points Higher laser repetition rate, fluence and larger spot size increase signal intensity. Higher laser repetition rate produces overlaps in aerosolised particles, improving signal stability and precision. For Sr‐rich materials, moderate spot diameter (≤ 60 μm), 3 J cm‐2 fluence and ≥ 12 Hz repetition rate are recommended.
Edafe O. Ominigbo, David T. Murphy, Kate E. Jenkins, Mitchell de Bruyn, Karine H. Moromizato   +4 more
wiley   +1 more source

SC‐550: A Sintered Calcite Reference Material for In Situ U‐Pb Geochronology

Geostandards and Geoanalytical Research, EarlyView.
Key Points New calcite reference material (SC‐550) produced by high‐temperature and high‐pressure sintering of nano‐particulate powder from a microbial limestone. Homogeneous U content (2.3 ± 0.4 μg g‐1) and U‐Pb isotope ratios (< 0.6% RSD for 207Pb/206Pb; < 3% RSD for 238U/206Pb).
Lorenzo Tavazzani, Nico Kueter, Dawid Szymanowski, Felix Marxer, Ismay Vénice Akker, Marcel Guillong, Massimo Chiaradia, Yannick Buret   +7 more
wiley   +1 more source

The missing large impact craters on Ceres. [PDF]

Nat Commun, 2016
Marchi S, Ermakov AI, Raymond CA, Fu RR, O'Brien DP, Bland MT, Ammannito E, De Sanctis MC, Bowling T, Schenk P, Scully JE, Buczkowski DL, Williams DA, Hiesinger H, Russell CT.   +14 more
europepmc   +1 more source

Air‐Abrasion With Aluminum Oxide Particles in Non‐Carious Cervical Lesions: Impact on Sclerotic Superficial Layer, Surface Topography, and Restorative Adhesive Performance

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To evaluate the effect of airborne‐particle abrasion (APA) with aluminum oxide on superficial dentin sclerosis, surface topography, and bonding performance of a universal adhesive in natural non‐carious cervical lesions (NCCLs), using dentin classification by the North Carolina Index (NCI) and Optical Coherence Tomography Index (OCT).
Nathalie Murielly Rolim de Abreu, Romina Ñaupari‐Villasante, Pedro Henrique de Aguiar Moreira, Alessandro D. Loguercio, Frederico Barbosa de Sousa   +4 more
wiley   +1 more source

Effect of metal framework design on the fracture resistance of implant‐supported metal–ceramic crowns fabricated by selective laser melting

Journal of Prosthodontics, EarlyView.
Abstract Purpose To evaluate the fracture resistance of implant‐supported metal–ceramic crowns fabricated using selective laser melting (SLM), according to the metal support height around the screw access hole (SAH) and the substructure design. Materials and Methods Metal–ceramic crowns and rectangular bilayer specimens were fabricated using SLM in two
Sang‐Ah Lee, Kyung‐Ho Ko, Yoon‐Hyuk Huh, Chan‐Jin Park, Lee‐Ra Cho   +4 more
wiley   +1 more source

Stability of granular media impacts morphological characteristics under different impact conditions

Open Astronomy
In planetary surfaces, oblique impact events are commonplace, and their study holds significant importance for understanding planetary impact processes and aiding in the design of landers and impactors.
Wang Yifeng, Li Ran, Chi Zhipeng, Yang Hui   +3 more
doaj   +1 more source