Results 61 to 70 of about 35,040 (307)

Quantitative Research on the Morphological Characteristics of Lunar Impact Craters of Different Stratigraphic Ages since the Imbrian Period

Remote Sensing
Impact craters serve as recorders of lunar evolutionary history, and determining the stratigraphic ages of craters is crucial. However, the age of many craters on the Moon remains undetermined.
Ke Zhang, Jianzhong Liu, Li Zhang, Yaya Gu, Zongyu Yue, Sheng Zhang, Jingyi Zhang, Huibin Qin, Jingwen Liu   +8 more
doaj   +1 more source

Cratering Experiments on the Self Armoring of Coarse-Grained Granular Targets

, 2012
Recently published crater statistics on the small asteroids 25143 Itokawa and 433 Eros show a significant depletion of craters below approx. 100 m in diameter.
A.M. Nakamura, Bottke, C. Güttler, Chapman, Chapman, Crater Analysis Techniques Working Group, Dayre, Dohi, Durda, Fujiwara, Fujiwara, Gault, Gladman, Hartmann, Hirata, Holsapple, Housen, Johnson, Lee, Lee, Melosh, Michel, N. Hirata, Nakamura, Okamoto, O’Brien, Richardson, Saito, Schmidt, Thomas, Thomas, Veverka, Yamamoto, Yamamoto, Yomogida   +34 more
core   +1 more source

Biomaterials for resolution of peri‐implantitis: Consensus report of Workgroup 2 of the IADR Implantology Research Group Best Evidence Consensus Symposium on Peri‐Implant Disease and Its Treatment

Journal of Periodontology, EarlyView.
Abstract Background Peri‐implantitis is a destructive disease affecting the tissues surrounding dental implants. Biomaterials may be applied during surgical treatment to reconstruct bony defects and support soft tissue healing. However, current evidence is unclear if these treatments increase the likelihood of peri‐implantitis resolution.
Sukirth M. Ganesan, David R. Fraser, Mustafa Tattan, Jessica M. Latimer, IADR IRG Peri‐Implantitis Best Evidence Consensus Working Group 2, Mario Aimetti, Hatice Hasturk, Purnima S. Kumar, Fernando Suarez Lopez Del Amo, Andreas Stavropoulos, Daniel S. Thoma, Spyridon Vassilopoulos, Hom‐Lay Wang, Georgios Kotsakis   +13 more
wiley   +1 more source

Impact cratering record of Fennoscandia [PDF]

A compilation of circular topographic, morphological, or geophysical structures in Fennoscandia and adjacent areas reveals 62 craterform structures of which 15 appear to be of extraterrestrial origin due to meteorite impact.
Henkel, H., Pesonen, L. J.
core   +1 more source

Mapping Terrestrial Impact Craters with the TanDEM-X Digital Elevation Model [PDF]

, 2013
The TanDEM-X mission generates a global digital elevation model (DEM) with unprecedented properties. We use it for mapping confirmed terrestrial impact craters as listed in the Earth Impact Database.
Breit, Helko, Fritz, Thomas, Gottwald, Manfred, Harris, Alan, Schättler, Birgit   +4 more
core  

Deep learning cone‐beam computed tomography image segmentation for the 3D visualization of mandibular infraosseous periodontal defects

Journal of Periodontology, EarlyView.
Abstract Background The accurate assessment of infraosseous periodontal defects is crucial for effective diagnosis and treatment planning. Cone‐beam computed tomography (CBCT) enables detailed imaging of these defects; however, to leverage their full potential, CBCT images must be reconstructed in 3 dimensions (3D).
Daniel Palkovics, Balint Molnar, Csaba Pinter, David García‐Mato, Andres Diaz‐Pinto, Attila Tanacs, Andrea Dobos, Peter Windisch, Christoph A. Ramseier   +8 more
wiley   +1 more source

The self‐secondary crater population of the Hokusai crater on Mercury

Geophysical Research Letters, 2016
Whether or not self‐secondaries dominate small crater populations on continuous ejecta deposits and floors of fresh impact craters has long been a controversy. This issue potentially affects the age determination technique using crater statistics.
Zhiyong Xiao, Nils C. Prieur, Stephanie C. Werner   +2 more
doaj   +1 more source

Dome craters on Ganymede [PDF]

Voyager observations reveal impact craters on Ganymede that are characterized by the presence of broad, high albedo, topographic domes situated within a central pit. Fifty-seven craters with central domes were identified in images covering approx. 50% of
Malin, M. C., Moore, J. M.
core   +1 more source

Are the detection and dimensions of peri‐implant buccal bone defects influenced by different implant materials and their location? An experimental cone‐beam computed tomography study

Journal of Periodontology, EarlyView.
Abstract Background The aim of this study is to evaluate the impact of different implant materials and arrangements within the field of view (FOV) and exomass on the diagnostic accuracy and image quality of cone‐beam computed tomography (CBCT) for the detection of peri‐implant buccal bone defects of various sizes. Methods A total of 120 CBCT scans with
Yulan Wang, Matheus L. Oliveira, Dorothea Dagassan‐Berndt, Michelle Simonek, Sebastian Kühl, Michael M. Bornstein   +5 more
wiley   +1 more source

Lunar impact craters [PDF]

Topography and evolution of lunar craters - meteoritic impact ...
Lowman, P. D., Jr.
core   +1 more source