Results 11 to 20 of about 393,869 (297)

Post-main-sequence planetary system evolution [PDF]

open access: yesRoyal Society Open Science, 2016
The fates of planetary systems provide unassailable insights into their formation and represent rich cross-disciplinary dynamical laboratories. Mounting observations of post-main-sequence planetary systems necessitate a complementary level of theoretical
Dimitri Veras
doaj   +2 more sources

Planetary Systems Biology [PDF]

open access: yesMolecular Cell, 2005
Combining paleogenetics, protein engineering, synthetic biology, and metabolic modeling, a planetary biology perspective is brought to bear on adaptive evolutionary events in ancient bacteria.
Department of Chemistry, University of Florida, Gainesville, FL 32611 USA ( host institution )   +2 more
openaire   +3 more sources

PARAMETER OPTIMIZATION FOR A THERMAL SIMULATION OF AN URBAN AREA [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Urban heat island (UHI) phenomenon is a significant challenge in urban planning, and accurate temperature predictions are crucial for effective decision-making. The choice of material parameters is crucial to simulate a realistic temperature distribution
B. Kottler   +5 more
doaj   +1 more source

Saving Planetary Systems: Dead Zones and Planetary Migration [PDF]

open access: yesThe Astrophysical Journal, 2007
The tidal interaction between a disk and a planet leads to the planet's migration. A long-standing question regarding this mechanism is how to stop the migration before planets plunge into their central stars. In this paper, we propose a new, simple mechanism to significantly slow down planet migration, and test the possibility by using a hybrid ...
Matsumura, Soko   +2 more
openaire   +3 more sources

On Populism, Planets, and Why Concepts Should Precede Definitions and Theory-Seeking

open access: yesSociologica, 2019
Despite its remarkable growth in recent years, the study of populism has long suffered from the lack of a comprehensive theory about its causes, development, and outcomes.
Takis S. Pappas
doaj   +1 more source

A new paradigm of governance for a carbon-pricing system [PDF]

open access: yes, 2016
Throughout its life, the United Nations has played a pioneering role in the world of ideas. COP21 – also known as Paris 2015 – shows the path for the United Nations to establish a new governance that will enforce the compliance of a new planetary carbon ...
Berezin, A.   +2 more
core   +1 more source

Fault diagnosis method of shearer planetary gear transmission systemunder variable speed conditions

open access: yesGong-kuang zidonghua, 2021
When the shearer cuts the coal seam, the planetary gear transmission system of the traction unit is in a variable speed working condition, and the structure of the planetary gear transmission system is complicated.
MAO Qinghua1,2,   +5 more
doaj   +1 more source

The record‐breaking heat wave of June 2019 in Central Europe

open access: yesAtmospheric Science Letters, 2020
After being hit by several devastating heat waves in recent years, Europe experienced an exceptionally hot June in 2019 again. This June is the hottest one on record over Central Europe both in a monthly‐mean sense and in terms of the number of extremely
Peiqiang Xu   +4 more
doaj   +1 more source

Research on the Coupled Phase-Tuning Vibration Characteristics of a Two-Stage Planetary Transmission System

open access: yesMachines, 2023
Mesh phasing has a dramatic impact on the static and dynamic behaviours of planetary gear systems. This research investigates the coupled phase-tuning mechanism of two-stage planetary gear systems and the corresponding relationship with the coupled ...
Pengfei Yan   +4 more
doaj   +1 more source

Contrast analysis between the trajectory of the planetary system and the periodicity of solar activity [PDF]

open access: yesAnnales Geophysicae, 2017
The relationship between the periodic movement of the planetary system and its influence on solar activity is currently a serious topic in research. The kinematic index of the planet juncture index has been developed to find the track and variation of
W. Sun   +9 more
doaj   +1 more source

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