Results 221 to 230 of about 164,975 (347)

Experimental evidence for non-proportional growth of large craters [PDF]

open access: yes
Evidence from laboratory impact experiments is indicating that increasing crater aspect ratios (diameter:depth) can result from increasing both velocity and projectile size without invoking unusual impactor conditions.
Gault, Donald E., Schultz, Peter H.
core   +1 more source

Etiology, pathogenesis and treatment of peri‐implantitis: A European perspective

open access: yesPeriodontology 2000, EarlyView.
Abstract Peri‐implantitis is a plaque‐associated pathological condition occurring in tissues around dental implants. It is characterized by inflammation in the peri‐implant mucosa and progressive loss of supporting bone. Over the last 30 years, peri‐implantitis has become a major disease burden in dentistry.
Tord Berglundh   +3 more
wiley   +1 more source

The Cretaceous-Tertiary (K/T) impact: One or more source craters? [PDF]

open access: yes
The Cretaceous-Tertiary (K/T) boundary is marked by signs of a worldwide catastrophe, marking the demise of more than 50 percent of all living species. Ever since Alvarez et al.
Koeberl, Christian
core   +1 more source

A Paleoarchaean impact crater in the Pilbara Craton, Western Australia. [PDF]

open access: yesNat Commun
Kirkland CL   +6 more
europepmc   +1 more source

Crater Morphometry and Scaling in Coarse, Rubble-Like Targets: Insights from Impact Experiments [PDF]

open access: yes
Spacecraft images reveal that the asteroids Itokawa, Ryugu, and Bennu are covered with coarse, boulder-rich material [13]. Impactors that collide with these bodies encounter a target with extreme physical heterogeneity.
Barnouin, O. S.   +8 more
core   +1 more source

Craters produced on Al, Cu and Au by Ar cluster impacts

open access: green, 2001
R. C. Birtcher, Jiro Matsuo, Isao Yamada
openalex   +2 more sources

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