Results 11 to 20 of about 4,070,624 (297)

Spatial variation of fruit trees in Heet district for the period 2009-2019 [PDF]

open access: yesمجلة جامعة الأنبار للعلوم الإنسانية, 2021
The research deals with a study and analysis of the spatial variation of fruit trees in the Heet district for the period (2009_2019), and identifies the rate of change between them, by discussing the natural and human characteristics that led to ...
Moaz R. Nassar, Taha A. Abdel
doaj   +1 more source

Strain-Induced Band Gap Variation in InGaN/GaN Short Period Superlattices

open access: yesCrystals, 2023
The use of strained substrates may overcome indium incorporation limits without inducing plastic relaxation in InGaN quantum wells, and this is particularly important for short-period InGaN/GaN superlattices.
Polyxeni Chatzopoulou   +5 more
doaj   +1 more source

Fluctuations of the Sea Level, Caused by Gravitational and Infra–Gravitational Sea Waves

open access: yesJournal of Marine Science and Engineering, 2020
In the article we analyzed the results of processing experimental data of the range of surface gravity sea wind waves (2–20 s) and the range of infra-gravitational sea waves (30 s–10 min), obtained on the laser meter of hydrosphere pressure variations ...
Grigory Dolgikh   +2 more
doaj   +1 more source

Photometric Observations of Three High Mass X-Ray Binaries and a Search for Variations Induced by Orbital Motion [PDF]

open access: yes, 2000
We searched for long period variation in V-band, Ic-band and RXTE X-ray light curves of the High Mass X-ray Binaries (HMXBs) LS 1698 / RX J1037.5-5647, HD 110432 / 1H 1249-637 and HD 161103 / RX J1744.7-2713 in an attempt to discover orbitally induced ...
Alexa   +12 more
core   +4 more sources

MONITORING IONOSPHERIC VARIATION FOR A DEFINITE PERIOD TIME IN TURKEY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Ionosphere has been studied by a number of scientists in recent years. Since GPS observations cannot provide TEC value directly, it can be estimated from combination of observations.
S. Inyurt, C. Mekik, O. Yildirim
doaj   +1 more source

Weight Variation in Term Newborns Hospitalized during Early Postnatal Period [PDF]

open access: yesChild Health Nursing Research, 2015
Purpose: This study was performed to explore the weight variations in high-risk term newborns hospitalized during the early postnatal period. Methods: A retrospective explorative study was performed with 64 term newborns who were hospitalized in the NICU
Youngmee Ahn   +3 more
doaj   +1 more source

Orbital Period Refinement of CoRoT Planets with TESS Observations

open access: yesFrontiers in Astronomy and Space Sciences, 2021
CoRoT was the first space mission dedicated to exoplanet detection. Operational between 2007 and 2012, this mission discovered 37 transiting planets, including CoRoT-7b, the first terrestrial exoplanet with a measured size. The precision of the published
Peter Klagyivik    +8 more
doaj   +1 more source

A cyclical period variation detected in the updated orbital period analysis of TV Columbae [PDF]

open access: yes, 2010
The two CCD photometries of the intermediate polar TV Columbae are made for obtaining the two updated eclipse timings with high precision. There is an interval time \sim 17yr since the last mid-eclipse time observed in 1991.
A. Retter   +21 more
core   +3 more sources

Period Variation of BW Vul [PDF]

open access: yesAstrophysics and Space Science, 1993
Due to the large fluctuation of the time of light maxima, in each observational season only very few observations is very dangerous for period variation research. Especially when the observation is not accurate enough such as for the early radial velocity data.
openaire   +1 more source

Permutation entropy variation for 2007 effusive dome-forming eruption period of Kelud Volcano, Indonesia [PDF]

open access: yesE3S Web of Conferences, 2021
The complexity of a system recorded in time series data can be measured statistically using permutation entropy (PE). The state of a system (e.g. regular, chaotic, random, etc.) that underlies the appearance of variations in time series can be determined
Nugraheni Lusia Rita   +3 more
doaj   +1 more source

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