Results 51 to 60 of about 1,273,035 (285)

Hybrid moment tensor inversion and numerical analysis of rock fracture

矿业科学学报, 2019
Through indoor rock acoustic emission test, the study of the spatio-temporal evolution characteristics of acoustic emission signals under different fracture conditions has certain guiding significance for monitoring and early warning of rock engineering ...
Zhang Lingfan, Chen Zhonghui, Qin Fan, Nian Gengqian, Chen Hongjie   +4 more
doaj   +1 more source

An analysis of a moderate earthquake, eastern flank of the Red Sea, Saudi Arabia

Earth, Planets and Space, 2020
The present study presents the analysis of a moderate earthquake (Mw 4.0) and its largest aftershocks located along the Red Sea coast, southwestern Saudi Arabia, with the aim to understand the enigma of peculiar seismicity in the Arabian Shield.
Ali K. Abdelfattah, Abdullah Al-amri, M. Sami Soliman, Faisal K. Zaidi, Saleh Qaysi, Mohamed Fnais, Sattam Almadani, Nassir Al-Arifi   +7 more
doaj   +1 more source

High-rate GNSS data in seismic moment tensor inversion: application to anthropogenic earthquakes

Geomatics, Natural Hazards & Risk, 2023
Earthquakes are traditionally monitored by seismic networks. However, the progress in high-rate Global Navigation Satellite Systems (GNSS) observations caused them to be included as a standard supplementary tool for strong natural earthquake monitoring ...
Iwona Kudłacik, Anna Tymińska, Grzegorz Lizurek, Jan Kapłon, Jacek Paziewski   +4 more
doaj   +1 more source

Arterial Spin‐Labeling MRI at the Cortical‐CSF Interface: A Novel Biomarker in Alzheimer Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background/Objective Arterial spin‐labeling (ASL) MRI can measure perfusion signal adjacent to CSF spaces and may provide information regarding CSF‐adjacent water transport physiology. We developed an automated pipeline to extract cortical‐CSF interface (IF) perfusion for comparison between Alzheimer disease (AD) and cognitively normal ...
Mona Asghariahmadabad, Pouya Metanat, Michael Thomas, Luke W. Bonham, Tyson Lam, Mehmet Kurt, Hong Nguyen, Tara Ellingson, Mauro Zucchelli, Stefano Casagranda, Quin Lu, Andreas M. Rauschecker, Leo Sugrue, Luis E. Savastano, Christopher P. Hess, Kamalini Ranasinghe, S. Andrew Josephson, Bruce L. Miller, Jennifer S. Yokoyama, Gil D. Rabinovici, Peter A. Ljubenkov, Lawren VandeVrede, Kambiz Nael   +22 more
wiley   +1 more source

Posterior Disconnection Syndrome in Early‐Stage Adult‐Onset Cerebral Adrenoleukodystrophy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Adult‐onset cerebral adrenoleukodystrophy is potentially treatable but often difficult to recognize before advanced cerebral involvement. Herein, we describe three men with early‐stage disease who initially presented with subtle visual complaints rather than subcortical dementia. Targeted neuropsychological testing revealed higher‐order visual
Kazuto Katsuse, Takashi Matsukawa, Yumiko Nakamura, Kazuo Kakinuma, Shoko Ota, Ryo Hara, Saki Nakashima, Kaoru Ito, Yutaro Nakamori, Toshiyuki Kakumoto, Masashi Hamada, Shigenori Kanno, Kyoko Suzuki, Tatsushi Toda   +13 more
wiley   +1 more source

Moment tensor inversion with transmission fiber optics

, 2023
In recent years, fiber optic measurement techniques are of high interest in the field of seismology. Lately, it was discovered that earthquake detection with a system originally designed for stabilizing low-noise frequency signals in fiber optic cables is possible.
openaire   +2 more sources

White Matter and Perivascular Imaging Changes in Alzheimer's Disease and Cerebral Amyloid Angiopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Peak‐width of skeletonized mean diffusivity (PSMD) and diffusion tensor imaging–analysis along the perivascular space (DTI‐ALPS), reflecting white matter integrity and glymphatic function, are altered in Alzheimer's disease (AD).
Debina Laishram, Guangwei Du, Sangam Kanekar, Nandakumar Nagaraja   +3 more
wiley   +1 more source

Seismological evidence for collapse of a deep geological cave—Focal mechanism of a thrust and collapse earthquake in a deep fold in the east Sichuan area

地球与行星物理论评
Do large caves exist deep underground? Through seismological investigations, we speculate the existence of a large geological cave about 7 km beneath the surface.
Tingxiao Xue, Liang Wang
doaj   +1 more source

The geysers geothermal area, California: tomographic images of the depleted steam reservoir and non- double-couple earthquakes [PDF]

, 1996
The Geysers geothermal area, California is the world's largest and most intensively exploited steam field, providing about 6% of California's electrical power.
Ross, Alwyn C.
core  

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

Advanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz, Jonas Fell, Hendrik Jost, Stefan Diebels, Hans‐Georg Herrmann   +4 more
wiley   +1 more source