Results 61 to 70 of about 24,442 (290)

On the Relationship between the Fractal Dimension of Geomagnetic Variations at Altay and the Space Weather Characteristics

open access: yesMathematics, 2023
The fractal dimension of geomagnetic field component variations (horizontal—H, vertical—Z and magnetic declination—D) at the Baigazan magnetic station at Russian Altay, for the period 2011–2013, were calculated using the Higuchi method.
Alexey Gvozdarev, Roman Parovik
doaj   +1 more source

CX3CL1 in Early Detection of Alzheimer's Disease: Plasma Dynamics Across Age and Disease Stages

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Backgrounds Alzheimer's disease (AD) is characterized by amyloid‐beta plaques, tau tangles, and neuroinflammation. C‐X3‐C motif chemokine ligand 1 (CX3CL1, also known as fractalkine), a neuroimmune chemokine implicated in AD pathogenesis, shows inconsistent alterations in plasma/serum across studies.
Ling Wang   +6 more
wiley   +1 more source

Borehole Azimuth Correction Method Considering the Effect of Underground Magnetic Veins

open access: yesShiyou huagong gaodeng xuexiao xuebao
In order to improve the accuracy of magnetic azimuth measurement,it is often necessary to establish a more accurate local geomagnetic model to obtain precise magnetic declination information.Compared with global geomagnetic model, local geomagnetic model
Gui HU   +5 more
doaj   +1 more source

Effects of substorm electrojet on declination along concurrent geomagnetic latitudes in the northern auroral zone

open access: yesJournal of Space Weather and Space Climate, 2016
The geomagnetic field often experiences large fluctuations, especially at high latitudes in the auroral zones. We have found, using simulations, that there are significant differences in the substorm signature, in certain coordinate systems, as a ...
Edvardsen Inge   +2 more
doaj   +1 more source

Magnetic measurements at Naples in the XIX century

open access: yesAnnals of Geophysics, 1997
Measurements of elements of the Earth's magnetic field started in Naples in 1837 by the Astronomical Observatory. Declination and inclination daily averages were regularly published from 1840. In 1839 Macedonio Melloni was called in Naples by the Bourbon
D. Pierattini, P. Gasparini
doaj   +1 more source

IceCube Sensitivity for Neutrino Flux from Fermi Blazars in Quiescent States

open access: yes, 2009
We investigate the IceCube detection potential of very high energy neutrinos from blazars, for different classes of "hadronic" models, taking into account the limits imposed on the neutrino flux by the recent Fermi telescope observations.
Neronov, A., Ribordy, M.
core   +1 more source

The development of a Utopian city? Comparing land-and skyscapes in Santa Cruz de Tenerife and San Cristobal de la Laguna [PDF]

open access: yes, 2018
We discuss the peculiar planning of the city of San Cristóbal de La Laguna, in the Canary Island of Tenerife (Spain), when compared to the nearby and essentially contemporary Santa Cruz de Tenerife, which served as a maritime port of the former city. For
Belmonte, Juan Antonio   +1 more
core   +2 more sources

Halley's Chart of Magnetic Declinations [PDF]

open access: yesNature, 1895
I AM again able to add another reference to the list of publications of Halley's Chart of Magnetic Declinations (see NATURE, vol. lii. pp. 79, 106, 343).
openaire   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende   +26 more
wiley   +1 more source

Results of Russian geomagnetic observatories in the 19th century: magnetic activity, 1841–1862 [PDF]

open access: yesAnnales Geophysicae, 2010
Hourly (spot readings) magnetic data (H- and D-components) were digitized from Russian yearbook tables for the years 1850–1862 from four observatories. The pdf pictures for digitization were taken by a normal digital camera.
H. Nevanlinna, L. Häkkinen
doaj   +1 more source

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