Results 111 to 120 of about 471,171 (277)

High-resolution surface wave dispersion spectrum computation based on iterative threshold shrinkage algorithm and its application to irregularly sampled data

Frontiers in Earth Science
Surface waves have proven to be valuable instruments in subsurface investigation, finding applications in diverse fields such as hydrocarbon and mineral resource exploration.
Luo Li, Luo Li, Xuri Huang, Xuri Huang, Weiping Cao, Hai Yao, Hai Yao, Yungui Xu, Yungui Xu, Huatao Zhao, Huatao Zhao, Bin Wu   +11 more
doaj   +1 more source

P-wave dispersion and left atrial indices as predictors of paroxysmal atrial fibrillation in patients

The Egyptian Heart Journal, 2014
Background: One-third of stroke and Transient Ischemic Attack (TIA) are cryptogenic requiring additional investigation and intervention. Occult Paroxysmal Atrial Fibrillation (PAF) has been suggested as a possible cause for these cryptogenic strokes ...
Mohamed Elansary, Mohamed Hamdi, Hanan Zaghla, Dalia Ragab   +3 more
doaj   +1 more source

Effect of dialysis and transplantation on myocardial repolarization parameters and P-wave dispersion in chronic kidney disease. [PDF]

J Arrhythm, 2021
Akcay M, Yıldırım U.
europepmc   +1 more source

Photoactivation of NV Centers in Diamond via Continuous Wave Laser Illumination of Shallow As‐Implanted Nitrogen

Advanced Functional Materials, EarlyView.
This study demonstrates an alternative method of creating charge‐stable negatively charged nitrogen vacancy (NV−) centers close to the diamond surface without high‐temperature annealing. By illuminating nitrogen‐implanted regions with a continuous‐wave 405 nm laser, NV− centers are induced, exhibiting electron spin coherence properties suitable for ...
Jens Fuhrmann, Christoph Findler, Michael Olney‐Fraser, Lev Kazak, Fedor Jelezko   +4 more
wiley   +1 more source

Relationship between P-wave dispersion, left ventricular mass index and function in Nigerian hypertensive patients. [PDF]

Cardiovasc J Afr, 2021
Inofomoh FO, Familoni OB, Amadi CE.
europepmc   +1 more source

Acoustic Logging Guided Waves In Transversely Isotropic Formations [PDF]

, 1988
We have studied the velocity dispersion of guided waves in transversely isotropic formations. Theoretical velocity dispersion curves were calculated with elastic constants based on laboratory and field measurements and compared to dispersion curves for
Cheng, C. H., Ellefsen, K. J., Schmitt, D. P.   +2 more
core  

Experimental and Theoretical Confirmation of Covalent Bonding in α‐Pu

Advanced Functional Materials, EarlyView.
From a combination of Reverse Monte Carlo dynamic rigid body fitting to the pair distribution functional and novel density functional approaches, the existence of covalent bonding is confirmed in α‐plutonium alongside other bonding types (i.e. mixed bonding schemes).
Alexander R. Muñoz, Matthew S. Cook, David C. Arellano, AM Milinda Abeykoon, Jeremy N. Mitchell, Sarah C. Hernandez, Eric D. Bauer, Christopher A. Mizzi, Boris Maiorov, Neil Harrison, W. Adam Phelan   +10 more
wiley   +1 more source

Atrial electromechanical delay and p wave dispersion associated with severity of chronic obstructive pulmonary disease. [PDF]

Afr Health Sci, 2021
Celik Y, Yıldırım N, Demir V, Alp C, Sahin O, Doğru MT.   +5 more
europepmc   +1 more source

Hole Transfer Dynamics in Thin Films of Mixed‐Dimensional Quasi‐2D Perovskites

Advanced Functional Materials, EarlyView.
Charge transfer dynamics in quasi‐2D perovskite (PEA2MAn−1PbnI3n+1), grown with a distinct dimensionality gradient are investigated. Selective excitation of the n = 4 phase reveals efficient hole transfer to n = 2 and n = 3 within tens of picoseconds, while n = 1 acts as a hole‐blocking layer. These findings highlight the importance of minimizing n = 1
Giuseppe Ammirati, Stefano Turchini, Francesco Toschi, Patrick O'Keeffe, Alessandra Paladini, Faustino Martelli, Reem Khanfar, Daimiota Takhellambam, Sara Pescetelli, Antonio Agresti, Daniele Catone   +10 more
wiley   +1 more source

P-Wave Duration and Dispersion Analysis: Methodological Considerations [PDF]

, 2001
Polychronis Dilaveris, John E. Gialafos
openalex   +1 more source