Results 41 to 50 of about 1,402,263 (290)

The magnetosphere under weak solar wind forcing [PDF]

, 2007
The Earth's magnetosphere was very strongly disturbed during the passage of the strong shock and the following interacting ejecta on 21–25 October 2001. These disturbances included two intense storms (Dst*≈−250 and −180 nT, respectively).
Rich, F. J., S. W. H. Cowley, Jordanova, V. K., R. B. Torbert, S. W. H. Cowley (7590302), A. Sharma, Y. Miyoshi (7592057), Adrian Grocott (7590026), Farrugia, Charlie J., V. K. Jordanova (7592063), C. J. Farrugia, A. Grocott, Sharma, A., V. K. Jordanova, C. J. Farrugia (7592051), Farrugia, C. J., P. E. Sandholt (7592054), R. B. Torbert (7592066), Grocott, A., Miyoshi, Y., P. E. Sandholt, Torbert, Roy B., Sandholt, P. E., Y. Miyoshi, Cowley, S. W. H., A. Sharma (5739), F. J. Rich, Torbert, R. B., F. J. Rich (7592060)   +28 more
core   +2 more sources

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Solar Rotation and Activity for Cycle 24 from SDO/AIA Observations

The Astrophysical Journal
Differential rotation plays a crucial role in the dynamics of the Sun. We study the solar rotation and its correlation with solar activity by applying a modified machine learning algorithm to identify and track coronal bright points (CBPs) from the Solar
Zahra Shokri, Nasibe Alipour, Hossein Safari   +2 more
doaj   +1 more source

Heartbeat of the sun from principal component analysis and prediction of solar activity on a millenium timescale [PDF]

, 2015
We derive two principal components (PCs) of temporal magnetic field variations over the solar cycles 21-24 from full disk magnetograms covering about 39% of data variance, with σ = 0.67. These PCs are attributed to two main magnetic waves travelling from
Shepherd, Simon J., Zharkov, Sergei I., Zharkova, V. V., Zharkov, Sergei, Popova, E., Shepherd, S. J., Zharkova, Valentina, Shepherd, Simon, Zharkov, S. I., Popova, Elena, Zharkova, Valentina V.   +10 more
core   +1 more source

Leaftronics: Bio‐Fractal Scaffolds From Leaf Venation for Low‐Waste Electronics

Advanced Materials, EarlyView.
“Leaftronics” transforms naturally evolved leaf venation into quasi‐fractal scaffolds for sustainable electronics. Polymer‐infiltrated leaf skeletons can be used to fabricate ultra‐smooth, reflow‐ and thin‐film‐compatible decomposable substrates, while making the same lignocellulose networks conducting results in flexible transparent electrodes.
Rakesh Rajendran Nair, Hrisheekesh Thachoth Chandran, Karl Leo, Hans Kleemann   +3 more
wiley   +1 more source

Equator to Pole Solar Chromospheric Differential Rotation Using Ca-K Features Derived from Kodaikanal Data

The Astrophysical Journal
Differential rotation is one of the basic characteristics of the Sun, and it plays an important role in generating the magnetic fields and its activities.
Hema Kharayat, Jagdev Singh, Muthu Priyal, B. Ravindra   +3 more
doaj   +1 more source

THE ASYMMETRIC DRIFT AND THE ROTATION CURVE OF THE GALAXY

Odessa Astronomical Publications, 2014
Asymmetric drift in the solar neighbourhood is studied by the means of the RAVE data. The asymmetric drift correction is applied to the SDSS data to measure the rotation curve of the Milky Way in the extended solar neighbourhood.
O. Golubov
doaj   +1 more source

An oriented-design simplified model for the efficiency of a flat plate solar air collector [PDF]

, 2010
In systems design, suitably adapted physical models are required. Different modelling approaches for a solar air collector were studied in this paper. First, a classical model was produced, based on a linearization of the conservation of energy equations.
LUNA, David, Jean-Pierre Nadeau, Yves Jannot, JANNOT, Yves, David Luna, NADEAU, Jean-Pierre   +5 more
core   +1 more source

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

Advanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena, J. Terence Blaskovits, Kun‐Han Lin, Denis Andrienko   +3 more
wiley   +1 more source

2D dynamics of the radiative core of low mass stars

EPJ Web of Conferences, 2017
Understanding the internal rotation of low mass stars all along their evolution is of primary interest when studying their rotational dynamics, internal mixing and magnetic field generation.
Hypolite Delphine, Mathis Stéphane, Rieutord Michel   +2 more
doaj   +1 more source