Results 41 to 50 of about 91,963 (247)

On the nature of the earth’s magnetic field

open access: yesГеофизический журнал
The block of information analyzed in the article includes the currently accepted ideas about the main source of the magnetic field as the axial dipole, the action of which is supplemented by a long series of regional sources.
Vadim Gordienko
doaj   +1 more source

Diurnal changes of earthquake activity and geomagnetic Sq-variations [PDF]

open access: yes, 2003
Statistic analyses demonstrate that the probability of earthquake occurrence in many earthquake regions strongly depends on the time of day, that is on Local Time (e.g. Conrad, 1909, 1932; Shimshoni, 1971; Duma, 1997; Duma and Vilardo, 1998).
G. Duma, Y. Ruzhin
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

Observations of Ion Density and Temperature around the International Space Station During two Geomagnetic Storms [PDF]

open access: yes, 2018
The International Space Station (ISS) is a low Earth orbit research facility and host to an international crew. Geomagnetic storms cause changes in the Earth’s magnetic field and affect the ion density and temperature in the ionosphere which could pose a
Wright, Alex M
core   +1 more source

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

open access: yesAdvanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding   +7 more
wiley   +1 more source

SARS-CoV-2 virus spreading in depending of the Earth’s magnetic field

open access: yesГеофизический журнал, 2022
The paper presents the results of a study on the possible relationship between the spread of SARS-CoV-2 virus and the Earth’s magnetic field based on an analysis of digital data for 95 countries.
M.I. Orlyuk, A.O. Romenets
doaj   +1 more source

Geomagnetic polar minima do not arise from steady meridional circulation [PDF]

open access: yes, 2018
Observations of the Earth’s magnetic field have revealed locally pronounced field minima near each pole at the core–mantle boundary (CMB). The existence of the polar magnetic minima has long been attributed to the supposed large-scale overturning ...
Aurnou, Jonathan M.   +2 more
core   +1 more source

New Limits on Local Lorentz Invariance in Mercury and Cesium

open access: yes, 2012
We report new bounds on Local Lorentz Invariance (LLI) violation in Cs and Hg. The limits are obtained through the observation of the the spin- precession frequencies of 199Hg and 133Cs atoms in their ground states as a function of the orientation of an ...
A. Foss   +7 more
core   +1 more source

GeAl2‐2xFe2xO3(OH)4 Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction

open access: yesAdvanced Functional Materials, EarlyView.
Fe‐doped imogolite nanotubes are synthesized via a one‐step hydrothermal method with varying Fe substitution ratios x. Structural and spectroscopic analyses confirm homogeneous Fe incorporation while preserving tubular shape. Optimal doping at x = 0.05 enhances optical absorption, narrows band gap, reduces charge transfer resistance, and significantly ...
Yassine Naciri   +12 more
wiley   +1 more source

Magnetic heading reference [PDF]

open access: yes, 1977
This invention employs a magnetometer as a magnetic heading reference for a vehicle such as a small aircraft. The magnetometer is mounted on a directional dial in the aircraft in the vicinity of the pilot such that it is free to turn with the dial about ...
Garner, H. D.
core   +1 more source

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