Results 111 to 120 of about 17,575 (301)

Why the 18.6 year tide cannot explain the change of sign observed in j₂ [PDF]

Advances in Geosciences, 2003
Recent studies show a change, starting in 1998, in the behavior of the variation of the dynamical flattening of the Earth (J2), supposed to be constant (secular), and mainly due to the post glacial rebound effect.
F. Deleflie, P. Exertier, G. Metris, P. Berio, O. Laurain, J.-M. Lemoine, R. Biancale   +6 more
doaj  

Archeomagnetic Intensity Spikes: Global or Regional Geomagnetic Field Features?

Frontiers in Earth Science, 2018
Variations of the geomagnetic field prior to direct observations are inferred from archeo- and paleomagnetic experiments. Seemingly unusual variations not seen in the present-day and historical field are of particular interest to constrain the full range
Monika Korte, Catherine G. Constable
doaj   +1 more source

Feasibility and Tolerability of Performing Portable MRI for Neurological Disorders in an Outpatient Neurology Clinic: A Prospective Cohort

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Accessing brain magnetic resonance imaging (MRI) can be challenging, especially for underserved patients, which may lead to disparities in neurological diagnosis. Method This mixed‐methods study enrolled adults with one of four neurological disorders: mild cognitive impairment or dementia of the Alzheimer type, multiple sclerosis ...
Maya L. Mastick, Nomin Enkhtsetseg, Joseph Sadok, Matheus Mochetti, Annabel Sorby Adams, Jennifer Guo, Cristina Trapaga Hacker, Isabella Gomez Hjerthen, Seungwon Lee, Siddharth Satish, Andrew S. Ham, Justin Hill, Denis Balaban, Kevin Kyle, Rebecca L. Gillani, Marcelo Matiello, Aleksandar Videnovic, Eric C. Klawiter, W. Taylor Kimberly, Farrah J. Mateen   +19 more
wiley   +1 more source

THE SECULAR VARIATIONS OF CLIMATE

Monthly Weather Review, 1921
Abstract After a brief discussion of the secular variations of the climate of the earth, the following theories, proposed for the explanation of these variations are described. None of these theories is sufficient to account for the known variations of climate, and some require dynamical conditions which are not in accord with celestial mechanics ...
openaire   +1 more source

Secular variation of gravity in Mexico?

Geophysical Research Letters, 1979
Based on data obtained during the period 1949‐1967, Woollard and others reported large secular variation of gravity in Mexico. Data obtained since 1971, using LaCoste‐Romberg gravimeters, indicate that no significant variation is occurring between Mexico City and Acapulco and Monterrey and Mexico City at present.
S. K. Singh, M. Mena, J. Monges
openaire   +1 more source

Wavelet analysis of geomagnetic jerks

, 2013
Geomagnetic jerks, or secular variation impulses, are abrupt changes in the slope of the first time derivative of the Earth's magnetic field. These changes occur on time scales of the order of a year. It has been demonstrated that the jerks might be more
de Wit, Tjaart Cornelis
core  

Validity of a Wearable Digital Insole for Assessing Gait ON and OFF in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Gait impairment is a distinctive symptom of Parkinson's disease that negatively impact mobility. We assessed the validity of wearable digital insoles against a validated reference gait analysis system for measuring select gait characteristics in patients with Parkinson's disease. Methods A comparative analysis between digital insoles
Deborah A. Hall, Kimberly Kwei, Rolando J. Acosta, Bharatkumar Koyani, Erin Robertson, Pratyush Rai, Roland Barge, Emily Timm, Nicollette L. Purcell, Natasha Desai, Dhanesh Patel, Ana‐Maria Visoiu‐Knapp, Samuel Stuart, Rinol Alaj, Matthew F. Wipperman, Oren Levy, Joan A. O'Keefe   +16 more
wiley   +1 more source

Updated Iberian Archeomagnetic Catalogue: New Full Vector Paleosecular Variation Curve for the Last Three Millennia

Geochemistry, Geophysics, Geosystems, 2018
In this work, we present 16 directional and 27 intensity high‐quality values from Iberia. Moreover, we have updated the Iberian archeomagnetic catalogue published more than 10 years ago with a considerable increase in the database.
A. Molina‐Cardín, S. A. Campuzano, M. L. Osete, M. Rivero‐Montero, F. J. Pavón‐Carrasco, A. Palencia‐Ortas, F. Martín‐Hernández, M. Gómez‐Paccard, A. Chauvin, S. Guerrero‐Suárez, J. C. Pérez‐Fuentes, G. McIntosh, G. Catanzariti, J. C. Sastre Blanco, J. Larrazabal, V. M. Fernández Martínez, J. R. Álvarez Sanchís, J. Rodríguez‐Hernández, I. Martín Viso, D. Garcia i Rubert   +19 more
doaj   +1 more source

Lunar nitrogen: Secular variation or mixing?

, 1986
The two current models to explain the nearly 40% variation of the lunar nitrogen isotopic composition are: (1) secular variation of solar wind nitrogen; and (2) a two component mixing model having a constant, heavy solar wind admixed with varying amounts
Norris, S. J., Pillinger, C. T., Wright, I. P.   +2 more
core  

Vestibular Patient Journey: Insights From Vestibular Disorders Association (VeDA) Registry

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Vestibular symptoms impose a high burden of disability. Understanding real‐world diagnostic and treatment pathways can identify care gaps and guide interventions. We aimed to characterize symptom profiles, diagnostic trends, provider involvement, and treatment patterns in vestibular disorders.
Ali Rafati, Sami I. Nassar, Shaun A. Nguyen, Patricia L. Gerend, Michael C. Schubert, Michael T. Teixido, Frederick A. Godley, Joel A. Goebel, Cynthia A. Ryan, Habib G. Rizk, Amir Kheradmand   +10 more
wiley   +1 more source