Results 111 to 120 of about 327,875 (328)
A Closer Earth and the Faint Young Sun Paradox: Modification of the Laws of Gravitation, or Sun/Earth Mass Losses? [PDF]
, 2013 Given a solar luminosity L_Ar = 0.75 L_0 at the beginning of the Archean 3.8 Gyr ago, where L_0 is the present-day one, if the heliocentric distance r of the Earth was r_Ar = 0.956 r_0, the solar irradiance would have been as large as I_Ar = 0.82 I_0. It
Iorio, Lorenzo
core +2 more sources
Advanced Functional Materials, EarlyView.Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey +5 more
wiley +1 more source
Planet Migration and Disk Destruction due to Magneto-Centrifugal Stellar Winds
, 2008 This paper investigates the influence of magneto-centrifugally driven or simply magnetic winds of rapidly-rotating, strongly-magnetized T Tauri stars in causing the inward or outward migration of close-in giant planets.
A. W. Barnard +52 more
core +2 more sources
Centennial- to millennial-scale hard rock erosion rates deduced from luminescence-depth profiles [PDF]
, 2018 The measurement of erosion and weathering rates in different geomorphic settings and over diverse temporal and spatial scales is fundamental to the quantification of rates and patterns of earth surface processes. A knowledge of the rates of these surface
Egholm, David +6 more
core +2 more sources
Populus simonii Carr. Reduces Wind Erosion and Improves Soil Properties in Northern China
Forests, 2019 To assess the ecological effects of poplar stands with different densities and ages, fixed observation sites were established in selected standard forest plots.
Jieming Zhang +4 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Molecular engineering of a nonconjugated radical polymer enables a significant enhancement of the glass transition temperature. The amorphous nature and tunability of the polymer, arising from its nonconjugated backbone, facilitates the fabrication of organic memristive devices with an exceptionally high yield (>95%), as well as substantial ...
Daeun Kim +14 more
wiley +1 more source
Nonlinear Dynamics of Aeolian Sand Ripples
, 1998 We study the initial instability of flat sand surface and further nonlinear dynamics of wind ripples. The proposed continuous model of ripple formation allowed us to simulate the development of a typical asymmetric ripple shape and the evolution of sand ...
A. Mehta +24 more
core +1 more source
Crack‐Growing Interlayer Design for Deep Crack Propagation and Ultrahigh Sensitivity Strain Sensing
Advanced Functional Materials, EarlyView.A crack‐growing semi‐cured polyimide interlayer enabling deep cracks for ultrahigh sensitivity in low‐strain regimes is presented. The sensor achieves a gauge factor of 100 000 at 2% strain and detects subtle deformations such as nasal breathing, highlighting potential for minimally obstructive biomedical and micromechanical sensing applications ...
Minho Kim +11 more
wiley +1 more source
Ecosystem recharge by volcanic dust drives broad-scale variation in bird abundance [PDF]
, 2015 Across the globe, deserts and volcanic eruptions produce large volumes of atmospheric dust, and the amount of dust is predicted to increase with global warming.
Aradóttir +67 more
core +1 more source
Impacts of Sand Burial and Wind Erosion on Regeneration and Growth of a Desert Clonal Shrub
Frontiers in Plant Science, 2018 Sand burial and wind erosion caused by sand movement are common phenomena in desert environments, but the effects on clonal shrub have rarely been investigated.
Baoli Fan +3 more
semanticscholar +1 more source