Results 1 to 10 of about 25,199 (146)

Thermodynamics of diamond formation from hydrocarbon mixtures in planets [PDF]

open access: yesNature Communications, 2023
This study combines computational chemistry and machine learning to provide insight on whether diamonds can form inside ice giants. This can help explain the dichotomy of Uranus and Neptune.
Bingqing Cheng   +2 more
doaj   +2 more sources

Unknown Ancient sources of Byzantine military treatises [PDF]

open access: yesHypothekai, 2021
The article is a preliminary attempt to attribute two lists of sources from Byzantine military treatises: the first one comes from the "Taktica" by the Byzantine emperor Leo VI the Wise (886-912), and the second - from "Taktika" by Nicephorus Uranus, the
Alexander Nefyodkin
doaj   +1 more source

Modeling of Mach-Zehnder Interferometric Sensors Employing Ring-Resonator Circuits for Slow-Light Enhancement

open access: yesIEEE Photonics Journal, 2023
The performance of symmetric Mach-Zehnder interferometric (MZI) sensor employing ring-resonator circuits for slow-light enhancement of the sensor performance was theoretically investigated.
Henri P. Uranus
doaj   +1 more source

Guiding light by and beyond the total internal reflection mechanism [PDF]

open access: yes, 2005
This thesis reports a series of techniques the author has developed to model various waveguiding structures, including the conventional planar and channel waveguides working by, and the advanced structures working beyond the TIR mechanism.
Uranus, Henri Putra
core   +14 more sources

A Numerical Investigation of the Berg Feature on Uranus as a Vortex-Driven System

open access: yesAtmosphere, 2020
The Berg cloud feature in the atmosphere of Uranus was first identified as a persistent grouping of clouds located just off the bright South Polar Collar at a latitude of around −34 degrees.
Raymond LeBeau   +4 more
doaj   +1 more source

Comparative Study on Planetary Magnetosphere in the Solar System

open access: yesSensors, 2020
The magnetospheric responses to solar wind of Mercury, Earth, Jupiter and Uranus are compared via magnetohydrodynamic (MHD) simulations. The tilt angle of each planetary field and the polarity of solar wind are also considered.
Ching-Ming Lai, Jean-Fu Kiang
doaj   +1 more source

The Case for a New Frontiers–Class Uranus Orbiter: System Science at an Underexplored and Unique World with a Mid-scale Mission

open access: yesThe Planetary Science Journal, 2022
Current knowledge of the Uranian system is limited to observations from the flyby of Voyager 2 and limited remote observations. However, Uranus remains a highly compelling scientific target due to the unique properties of many aspects of the planet ...
Ian J. Cohen   +36 more
doaj   +1 more source

Modern Astronomy in Ottoman Madrasa Circles in the First Half of the 19th Century [PDF]

open access: yesNazariyat: Journal for the History of Islamic Philosophy and Sciences, 2021
The use of telescopes for scientific purposes has significantly changed our knowledge of the structure of the Solar System. By the mid-19th century, two new planets, a dozen asteroids, and dozens of satellites had been added to the five planets known ...
Orhan Güneş
doaj   +1 more source

The Upper Atmosphere of Uranus from Stellar Occultations. I. Methods and Validation

open access: yesThe Planetary Science Journal, 2023
Measurements made by the Voyager 2 spacecraft during its flybys of Uranus in 1986 found warm stratospheric and hot thermospheric temperatures that cannot be explained by solar energy alone.
William R. Saunders   +4 more
doaj   +1 more source

Uranus and Neptune: Shape and Rotation [PDF]

open access: yes, 2010
Both Uranus and Neptune are thought to have strong zonal winds with velocities of several hundred meters per second. These wind velocities, however, assume solid-body rotation periods based on Voyager 2 measurements of periodic variations in the planets'
Anderson   +29 more
core   +1 more source

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