Results 41 to 50 of about 995,876 (355)

Hypersatellite and satellite transitions in cobalt

open access: yesNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2001
An accurate measurement of energy shifts and relative intensities of hypersatellite and satellite transitions in cobalt have been made. The use of radioactive ^(59)Ni, which decays mostly by the nuclear K-electron capture to cobalt and the low-probability processes of ejection of the other K-electron allowed the observation of decays among very pure ...
Ksenofont Ilakovac, Branko Vuković
openaire   +2 more sources

EXAMINATION OF METRO STATIONS PEDESTRIAN ACCESSIBILITY FOR ALL USING OPEN DATA KIT: A CASE STUDY OF NOIDA CITY IN INDIA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
To make transit rail services more attractive, the preferred public travel mode and serve as the backbone of any metropolitan area, there arises a need to create a sustainable and inclusive urban environment with access to all. This study aims to map the
S. S. Kapoor, T. S. Brar
doaj   +1 more source

The changing face of AU Mic b: stellar spots, spin-orbit commensurability, and transit timing variations as seen by CHEOPS and TESS [PDF]

open access: yesAstronomy & Astrophysics, 2021
AU Mic is a young planetary system with a resolved debris disc showing signs of planet formation and two transiting warm Neptunes near mean-motion resonances.
G. Szab'o   +80 more
semanticscholar   +1 more source

Hypersatellite and satellite transitions in xenon atoms

open access: yesPhysical Review A, 1990
Decay of double-K-shell-vacancy states in xenon atoms, created in the decay of 131Cs, was investigated. The measurements were performed with a pair of germanium detectors, a fast-slow coincidence system, and a three-parameter pulse-height analyzer. In the analysis of the two-dimensional E1-E2 spectrum, improved least-squares routines were applied.
Ilakovac, K   +3 more
openaire   +5 more sources

Determination of the size, mass, and density of "exomoons" from photometric transit timing variations [PDF]

open access: yes, 2007
Precise photometric measurements of the upcoming space missions allow the size, mass, and density of satellites of exoplanets to be determined. Here we present such an analysis using the photometric transit timing variation ($TTV_p$).
A. Simon   +14 more
core   +2 more sources

V1298 Tau with TESS: Updated Ephemerides, Radii, and Period Constraints from a Second Transit of V1298 Tau e [PDF]

open access: yesAstrophysical Journal Letters, 2021
V1298 Tau is a young (20–30 Myr) solar-mass K star hosting four transiting exoplanets with sizes between 0.5 and 0.9 R J. Given the system’s youth, it provides a unique opportunity to understand the evolution of planetary radii at different separations ...
A. Feinstein   +5 more
semanticscholar   +1 more source

Time course and pattern of metastasis of cutaneous melanoma differ between men and women. [PDF]

open access: yesPLoS ONE, 2012
BACKGROUND: This study identified sex differences in progression of cutaneous melanoma. METHODOLOGY/PRINCIPAL FINDINGS: Of 7,338 patients who were diagnosed as an invasive primary CM without clinically detectable metastases from 1976 to 2008 at the ...
Liljana Mervic
doaj   +1 more source

Revisiting Trans-Arctic Maritime Navigability in 2011–2016 from the Perspective of Sea Ice Thickness

open access: yesRemote Sensing, 2021
Arctic navigation has become operational in recent decades with the decline in summer sea ice. To assess the navigability of trans-Arctic passages, combined model and satellite sea ice thickness (CMST) data covering both freezing seasons and melting ...
Xiangying Zhou   +5 more
doaj   +1 more source

Critical Analysis of Tess Transit Photometric Data: Improved Physical Properties for Five Exoplanets [PDF]

open access: yesAstronomical Journal, 2021
We present improved physical parameters for four hot Jupiters: KELT-7 b, HAT-P-14 b, WASP-29 b, WASP-95 b, and a hot Neptune: WASP-156 b, by performing critical and rigorous analysis of the time-series observations from the Transiting Exoplanet Survey ...
Suman Saha, S. Sengupta
semanticscholar   +1 more source

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