Results 71 to 80 of about 62,716 (304)

Influence of TiN inclusions and segregation bands on the mechanical properties and ballistic performance during ballistic impact tests in low-alloy high-strength steel

Frontiers in Materials
The influence of TiN inclusions and segregation bands on the mechanical properties and ballistic performance was investigated in high-strength steel.
Keke Tong, Haoran Sun, Luxing Duan, Xiurong Zuo   +3 more
doaj   +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

Thermal Evolution of the Impact‐Induced Cryomagma Chamber Beneath Occator Crater on Ceres

Geophysical Research Letters, 2019
The faculae in Occator Crater on dwarf planet Ceres are an accumulation of salts that have been interpreted as cryovolcanic products. Current age estimates from crater counting suggest a maximum 18‐Ma difference between the crater forming impact and the ...
M. A. Hesse, J. C. Castillo‐Rogez
doaj   +1 more source

A Second Large Subglacial Impact Crater in Northwest Greenland? [PDF]

Following the discovery of the Hiawatha impact crater beneath the northwest margin of the Greenland Ice Sheet, we explored satellite and aerogeophysical data in search of additional such craters.
Bottke, William F., Jr., Fahnestock, Mark A., Harbeck, Jeremy P., Kjaer, Kurt H., MacGregor, Joseph A., Paden, John D., Stillman, David E., Studinger, Michael   +7 more
core   +1 more source

Projectile Interactions in Granular Impact Cratering

Physical Review Letters, 2008
We present evidence for the interactions between a ball and the container boundaries, as well as between two balls, that are mediated by the granular medium during impact cratering. The presence of the bottom boundary affects the final penetration depth only for low drop heights with shallow filling, in which case, surprisingly, the penetration becomes
Katsuragi, Hiroaki, Nelson, E. L., Durian, Douglas J., Mayor, Patrick   +3 more
openaire   +5 more sources

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

Failure mechanism of 6252-armor steel under hypervelocity impact by 93W alloy projectile

Journal of Materials Research and Technology
In this study, we analyzed the fracture mechanism of the 6252-armor steel target exposed to the impact of a kinetic energy projectile made of 93W alloy.
Hongke Wang, Zezhou Li, Xingwang Cheng, Zhaohui Zhang, Yangyu He   +4 more
doaj   +1 more source

Bilateral symmetry of circular impact structures of astroblemes [PDF]

The relief of the true crater-bottom and the distribution of impactites and allogenic breccias for the Popigay and Kara astroblemes is examined. It is shown that the crater morphology and the distribution of ejecta of fragmented and melted masses has a ...
Masaytis, V. L., Mashchak, M. S.
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

STUDY ON LIFE PREDICTION AND FATIGUE TEST OF ZM6 MATERIAL WITH IMPACT PIT

Jixie qiangdu, 2021
The smooth specimens,notched specimens and impact crater specimens of ZM6 material were prepared. The fatigue test of these specimens was carried out,and the fatigue life of these specimens under different stress levels was obtained.Based on the theory ...
LI Jian, YANG SuSong, YANG XianKun, WAN ZhenHua, HU WeiPing   +4 more
doaj