Results 61 to 70 of about 11,370 (181)

Repere istorice și lingvistice privitoare la cuvântul "Crăciun" [PDF]

Eon
The origin of the word "Crăciun" (the Romanian name for Christmas) has generated numerous controversies for almost two centuries, being regarded as a term unique to the Romanian linguistic area and difficult to explain etymologically.
Dan Alexandru STREZA
doaj  

What is a lunar standstill III?

Documenta Praehistorica, 2016
Prehistoric monument alignments on lunar standstills are currently understood for horizon range, perturbation event, crossover event, eclipse prediction, solstice full Moon and the solarisation of the dark Moon.
Lionel Duke Sims
doaj   +1 more source

Temporal variations of the ionospheric disturbances due to the seasonal variability over Turkey using IONOLAB-FFT algorithm

Geodesy and Geodynamics, 2020
The ionosphere is exposed to forcing from below due to gravitational, geomagnetic and seismic activities, and above due to solar wind. These forces cause some medium and large scale irregularities and disturbances into the upper atmosphere and ionosphere.
Secil Karatay
doaj   +1 more source

A Solar Analog Model for Decrease in Far Ultraviolet Irradiance Under a Grand Minimum

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Solar analog field stars having a range of magnetic activity can provide an estimate of solar spectral irradiance (SSI) variability relevant to understanding the Sun's influence on terrestrial climate. This approach is particularly useful for far ultraviolet (FUV) irradiance that cannot be observed from the Earth surface.
D. Lubin, C. Melis, D. Tytler
wiley   +1 more source

Light receiving properties of a solar cell module with the branch structure of a plant shoot

Nihon Kikai Gakkai ronbunshu, 2014
In this study, compactification (improvement of the light receiving density) and reduction of the directivity (dependence property for the sun position) are tried to improve the efficiency of the photovoltaics using Light Received Analysis Algorithm of a
Osamu KAWAE, Shin'ya OBARA
doaj   +1 more source

Validation of Global Ionospheric Specification (GIS) Electron Density Measurements During Solar Minimum to Solar Maximum Under Quiet and Disturbed Geomagnetic Conditions

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Global Ionospheric Specification (GIS) three‐dimensional electron density profiles constructed by assimilating the line‐of‐sight total electron content (TEC) from global navigation satellite system (GNSS) radio occultation (RO) measurements by FORMOSAT‐7/COSMIC‐2 (F7/C2) and ground‐based receiver network from international GNSS service ...
P. K. Rajesh, C. H. Charles Lin, C. Y. Lin, T. Matsuo, H. Jin, S. Perwitasari, M. Nishioka, Chao‐Yen Chen   +7 more
wiley   +1 more source

Global Circulation of Martian Ionospheric Currents Revealed by Magnetometer Data

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract In the dynamo region of the Martian ionosphere, a large‐scale current is generated by charge separation: ions collide with neutrals while electrons preferentially gyrate around local magnetic field lines. Using MAVEN magnetometer data and a physics‐informed neural network constrained by Ampère's law and Gauss's law for magnetism (the Neural ...
T. Delcourt, A. Mittelholz
wiley   +1 more source

Seasonal development of nocturnal blood plasma melatonin concentration in the Hungarian native donkey [PDF]

Veterinarski Glasnik
The domestic donkey (Equus asinus) is a long-day, seasonally oestrous (polyoestrous) species, i.e., its reproduction is regulated by an endogenous circannual rhythm, similar to that of the horse (Equus caballus).
Harmat Levente, Chandran Anushya Nathania, Nagy János, Alpár Alán, Somoskői Bence, Fekete Sándor György, Becskei Zsolt, Gáspárdy András   +7 more
doaj   +1 more source

ENLIGHTENme: Translating the Benefits of Self‐Administered Daytime Light Supplementation to Older Adults in the Real World

Journal of Pineal Research, Volume 78, Issue 5, September 2026.
ABSTRACT Controlled studies have demonstrated that light supplementation benefits circadian entrainment, sleep and mood. Translating these findings into effective, real‐world usage of light supplementation is, however, challenging because naturalistic and supplemental light exposure are shaped by personal habits and environmental light conditions ...
Débora B. Constantino, Flavia Baccari, Leonardo Caporali, Valerio Carelli, Giulia Amore, Marijke Gordijn, Toomas Haller, Chiara La Morgia, Anne Landvreugd, Marina Marinelli, David McDaid, Monika Nõmm, Francesco Nonino, Martina Romagnoli, Martino Schettino, Corrado Zenesini, Meike Bartels, Debra J. Skene, Daan R. van der Veen   +18 more
wiley   +1 more source

Solstice: An Electronic Journal of Geography and Mathematics, Volume XIX, Number 1

, 2008
This document was delivered over the internet. The .zip file contains all static images, animated images, and text files.The purpose of Solstice is to promote interaction between geography and mathematics.
Naud, Matthew, Schumann, Lars, Arlinghaus, William Edward, Onstott, Bert, Arlinghaus, Sandra Lach, Rayle, Roger   +5 more
core   +4 more sources