Results 171 to 180 of about 7,393,464 (385)
Results from the arable crop rotation study at Oak Park 2000 - 2007 [PDF]
, 2008 An organic rotation trial was established at Oak Park in 2000. The crop sequence in the seven year rotation was: two years grass-clover, winter wheat, potatoes, winter oats, lupins and spring barley.
Kennedy, T., Mahon, T., Merfield, C.
core
Angular Momentum Loss from Cool Stars: An Empirical Expression and Connection to Stellar Activity
, 2011 We show here that the rotation period data in open clusters allow the empirical determination of an expression for the rate of loss of angular momentum from cool stars on the main sequence.
Andronov +26 more
core +1 more source
The Astrophysical JournalIn a previous paper, I described a new way of determining the high-latitude solar rotation rate statistically from spacetime maps of polar faculae observed in the 6767 Å continuum by the Michelson Doppler Interferometer on the Solar and Heliospheric ...
Neil R. Sheeley Jr.
doaj +1 more source
Lightcurve and rotation period determination for asteroid 3634 Iwan [PDF]
, 2018 Z. Donchev +3 more
openalex +1 more source
GeAl2‐2xFe2xO3(OH)4 Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction
Advanced Functional Materials, EarlyView.Fe‐doped imogolite nanotubes are synthesized via a one‐step hydrothermal method with varying Fe substitution ratios x. Structural and spectroscopic analyses confirm homogeneous Fe incorporation while preserving tubular shape. Optimal doping at x = 0.05 enhances optical absorption, narrows band gap, reduces charge transfer resistance, and significantly ...
Yassine Naciri +12 more
wiley +1 more source
Cassini Ring Seismology as a Probe of Saturn's Interior I: Rigid Rotation
, 2018 Seismology of the gas giants holds the potential to resolve long-standing questions about their internal structure and rotation state. We construct a family of Saturn interior models constrained by the gravity field and compute their adiabatic mode ...
Fortney, Jonathan J. +3 more
core +1 more source
Reconfigurable Metamirrors Based on Compliant Mechanisms
Advanced Functional Materials, EarlyView.Providing the basis for numerous practical applications, the reconfigurability of metadevices is of great importance. Through the integration of controlled mechanical deformation with chiral meta‐atoms, a compliant mechanism based metamirror is demonstrated for active control over the polarization of electromagnetic waves.
Galestan Mackertich‐Sengerdy +3 more
wiley +1 more source
The `Periodic Nulls' of Radio Pulsar J1819+1305
, 2008 We present a single-pulse study of the four-component pulsar J1819+1305, whose ``null'' pulses bunch at periodic intervals of around 57 times the rotation period.
A. Cumming +5 more
core +1 more source
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
Quantifying the Limits of TESS Stellar Rotation Measurements with the K2-TESS Overlap
The Astrophysical JournalThe Transiting Exoplanet Survey Satellite (TESS) has provided stellar rotation periods across much of the sky through high-precision light curves, but the reliability and completeness of these measurements require careful evaluation.
Andrew W. Boyle +2 more
doaj +1 more source