Results 11 to 20 of about 512 (70)

Automatic Tooth Segmentation from 3D Dental Model using Deep Learning: A Quantitative Analysis of what can be learnt from a Single 3D Dental Model [PDF]

open access: yesarXiv, 2022
3D tooth segmentation is an important task for digital orthodontics. Several Deep Learning methods have been proposed for automatic tooth segmentation from 3D dental models or intraoral scans. These methods require annotated 3D intraoral scans. Manually annotating 3D intraoral scans is a laborious task.
arxiv  

Petrology of hydrothermal metasomatism of intra-ore dolerite dikes of mesothermal gold deposits

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
There is a necessity of working up the geology-genetic theory of hydrothermal gold deposit formation instead of the four hypotheses excepting one another: granitogene, basaltogene, metamorphogene, polygene.
Igor Vasilyevich Kucherenko
doaj   +2 more sources

Teeth3DS+: An Extended Benchmark for Intraoral 3D Scans Analysis [PDF]

open access: yesarXiv, 2022
Intraoral 3D scans analysis is a fundamental aspect of Computer-Aided Dentistry (CAD) systems, playing a crucial role in various dental applications, including teeth segmentation, detection, labeling, and dental landmark identification. Accurate analysis of 3D dental scans is essential for orthodontic and prosthetic treatment planning, as it enables ...
arxiv  

Ground Vibrational State SiO Emission in the VLA BAaDE Survey [PDF]

open access: yesThe Astronomical Journal, Volume 161, 2021, 111, 2020
Using a subsample of the Bulge Asymmetries and Dynamical Evolution (BAaDE) survey of stellar SiO masers, we explore the prevalence and characteristics of $^{28}$SiO $J=1-0, v=0$ emission. We identify 90 detections of maser, thermal, or composite $^{28}$SiO $J=1-0, v=0$ emission out of approximately 13,000 candidate spectra from the NSF's Karl G. Jansky
arxiv   +1 more source

Petrology of hydrothermal metasomatism into intra-ore dolerite dikes of mesothermal gold deposits. P. 2. Zun-Kholba (East Sayan)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
The relevance of the research is caused by the necessity of working up the geology-genetic theory of hydrothermal gold deposits formation instead of the four hypotheses granitogene, basaltogene, metamorphogene, polygene excepting one another.
Igor Kucherenko
doaj   +2 more sources

A Critical Analysis of the Limitation of Deep Learning based 3D Dental Mesh Segmentation Methods in Segmenting Partial Scans [PDF]

open access: yesarXiv, 2023
Tooth segmentation from intraoral scans is a crucial part of digital dentistry. Many Deep Learning based tooth segmentation algorithms have been developed for this task. In most of the cases, high accuracy has been achieved, although, most of the available tooth segmentation techniques make an implicit restrictive assumption of full jaw model and they ...
arxiv  

Magmatism and continental breakup at the west margin of southern Africa: A geochemical comparison of dolerite dikes from northwestern Namibia and the Western Cape

open access: yes, 2007
This paper presents a comparative geochemical study of Early Cretaceous mafic dike swarms along the rifted volcanic margin of southern Africa from northwestern Namibia to the Cape Peninsula.
R. Trumbull   +4 more
semanticscholar   +1 more source

TSegFormer: 3D Tooth Segmentation in Intraoral Scans with Geometry Guided Transformer [PDF]

open access: yesarXiv, 2023
Optical Intraoral Scanners (IOS) are widely used in digital dentistry to provide detailed 3D information of dental crowns and the gingiva. Accurate 3D tooth segmentation in IOSs is critical for various dental applications, while previous methods are error-prone at complicated boundaries and exhibit unsatisfactory results across patients. In this paper,
arxiv  

Sources and Petrogenesis of Late Triassic Dolerite Dikes in the Liaodong Peninsula: Implications for Post-collisional Lithosphere Thinning of the Eastern North China Craton

open access: yes, 2007
refractory lithospheric mantle in the garnet stability field. The geochemical and geochronological data presented here indicate that Late Triassic magmatism occurred in an extensional setting, most probably related to post-orogenic lithospheric ...
Jin-Hui Yang   +4 more
semanticscholar   +1 more source

Intraoral Pressure in Ethnic Wind Instruments [PDF]

open access: yesarXiv, 2013
High intraoral pressure generated when playing some wind instruments has been linked to a variety of health issues. Prior research has focused on Western classical instruments, but no work has been published on ethnic wind instruments. This study measured intraoral pressure when playing six classes of ethnic wind instruments (N = 149): Native American ...
arxiv  

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