Results 91 to 100 of about 520,741 (384)

A comprehensive study of the Kepler triples via eclipse timing [PDF]

, 2015
We produce and analyze eclipse time variation (ETV) curves for some 2600 Kepler binaries. We find good to excellent evidence for a third body in 222 systems via either the light-travel-time (LTTE) or dynamical effect delays.
T. Borkovits, T. Hajdu, J. Sztakovics, S. Rappaport, A. Levine, I. B. B'ir'o, P. Klagyivik   +6 more
semanticscholar   +1 more source

The Solar Eclipse Predictions of Chiljeongsam-Oepyeon in Early Choseon [PDF]

Journal of Astronomy and Space Sciences, 2004
The history books of East Asia about astronomical phenomena have the more records of the solar eclipse frequently than any other ones. It is because traditionally, the solar eclipse meaned the fate of dynasty and the king's rule.
Young Sook Ahn, Yong Sam Lee
doaj   +1 more source

Self‐Cascade Catalytic Reaction–Assisted Apoptosis/Calcicoptosis/Ferroptosis Induction with Microsphere‐Aggregated Hydrogels in Triple‐Negative Breast Cancer Therapy

Advanced Functional Materials, EarlyView.
Hyaluronic acid‐dopamine‐based intra‐crosslinked microsphere including cisplatin (HPC MS) is fabricated by spray‐drying and calcium/iron ions are introduced for interparticle crosslinking. Designed microsphere‐aggregated hydrogel (MAH) system including cisplatin/CaO2/FeSO4 can provide apoptosis/calcicoptosis/ferroptosis‐mediated chemo/cascade ...
ChaeRim Hwang, Yeoung Eun Choi, Song Yi Lee, Mrinmoy Karmakar, Qiaojun Hao, Junmin Lee, Hyun‐Jong Cho   +6 more
wiley   +1 more source

Enhancing Optoelectronic Properties in Phthalocyanine‐Based SURMOFs: Synthesis of ABAB Linkers by Avoiding Statistical Condensation with Tailored Building Blocks

Advanced Functional Materials, EarlyView.
A novel phthalocyanine (PC)‐based metal–organic framework (MOFs) is synthesized using ditopic PC linkers obtained through regioselective statistical condensation. The resulting MOF exhibits significant improvements in electronic absorption, thereby enhancing the material's performance in light harvesting and energy conversion.
Lukas S. Langer, Mareen Stahlberger, Xiaojing Liu, Yi Luo, Niklas E. Häußermann, Puja Singhvi, Yidong Liu, Olaf Fuhr, Martin Nieger, Lars Heinke, Thomas Heine, Christof Wöll, Stefan Bräse   +12 more
wiley   +1 more source

Terahertz‐Driven Ultrafast Dynamics of Rare‐Earth Nickelates by Controlling Only the Charge Degree of Freedom

Advanced Functional Materials, EarlyView.
The THz drive of the Mott insulating state of a rare‐earth nickelate induces instantaneous insulator‐metal transition via quantum tunneling of valence electrons across the bandgap. This transition is pure electronic and highly non‐thermal, which may find its applications in ultrafast opto‐electronics with enhanced performance and minimal device size ...
Gulloo Lal Prajapati, Sergey Kovalev, Igor Ilyakov, Atiqa Arshad, Gaurav Dubey, Ketan S. Navale, Dhanvir Singh Rana, Jan‐Christoph Deinert   +7 more
wiley   +1 more source

Observation of enhanced X-ray emission from the CTTS AA Tau during a transit of an accretion funnel

, 2007
AA Tau was observed for about 5h per XMM orbit (2 days) over 8 successive orbits, which covers two optical eclipse periods (8.2 days). The XMM optical/UV monitor simultaneously provided UV photometry with a ~15 min sampling rate.
Anders, Anders, Argiroffi, Bouvier, Bouvier, Bouvier, Briggs, Broos, Favata, Feigelson, Getman, Getman, Grankin, Grosso, Grosso, Guenther, Güdel, Güdel, Güdel, Güdel, Güdel, Günther, Imanishi, J. Bouvier, Jansen, Johns-Krull, Johns-Krull, Johns-Krull, K. Grankin, Kastner, Kenyon, M. Fernández, M. R. Zapatero Osorio, Mason, Morrison, N. Grosso, Ness, Neuhäuser, Ozawa, Porquet, Preibisch, Reale, Rieke, Robrade, Romanova, Scargle, Schmitt, Schmitt, Schmitt, Schmitt, Stassun, Stelzer, Strüder, T. Montmerle, Telleschi, Turner, Vuong, Walter, Walter, Wang, Wilms, Wolk, Yang   +62 more
core   +4 more sources

Eco‐Fabricated Nanowave‐Textured Implants Drive Microtubule‐Assisted Nuclear Mechanotransduction and Chromatin Modification: Biophysical Priming for Osteogenesis and Bone Regeneration

Advanced Functional Materials, EarlyView.
Eco‐friendly nanowave‐textured implants produced via femtosecond laser fabrication enhance bone regeneration by orchestrating a precise mechanotransduction cascade. This nanotopography directs mesenchymal stem cell alignment and cytoskeletal organization, triggering changes in nuclear shape and chromatin acetylation that prime cells for osteogenesis ...
Bosu Jeong, Ji‐Young Yoon, Junyong Ahn, Byunghak Lee, Sung‐Min Park, Jae‐Heon Kim, Buuvee Bayarkhangai, Yu Jin Kim, Sak Lee, Jonathan C. Knowles, Moon‐Young Kim, DongJun Lee, Sang‐Hoon Rhee, Hae‐Hyoung Lee, Hae‐Won Kim, Jung‐Hwan Lee   +15 more
wiley   +1 more source

Spitzer and z' Secondary Eclipse Observations of the Highly Irradiated Transiting Brown Dwarf KELT-1b [PDF]

, 2014
We present secondary eclipse observations of the highly irradiated transiting brown dwarf KELT-1b. These observations represent the first constraints on the atmospheric dynamics of a highly irradiated brown dwarf, and the atmospheres of irradiated giant ...
Beatty, Thomas G., Bruns, Jacob M., Collins, Karen A., Eastman, Jason, Fortney, Jonathan, Gaudi, B. Scott, Kielkopf, John F., Knutson, Heather, Pepper, Joshua, Showman, Adam P., Siverd, Robert J., Stassun, Keivan G.   +11 more
core   +2 more sources

Modeling Amateur Radio Soundings of the Ionospheric Response to the 2017 Great American Eclipse

Geophysical Research Letters, 2018
On 21 August 2017, a total solar eclipse traversed the continental United States and caused large‐scale changes in ionospheric densities. These were detected as changes in medium‐ and high‐frequency radio propagation by the Solar Eclipse QSO Party ...
N. Frissell, J. Katz, S. W. Gunning, J. S. Vega, A. Gerrard, G. Earle, M. Moses, M. West, J. Huba, P. Erickson, E. Miller, R. Gerzoff, W. Liles, H. W. Silver   +13 more
semanticscholar   +1 more source

EclipseNB: A Network of Low‐Cost GNSS Receivers to Study the Ionosphere

Space Weather
This work aims to demonstrate that dense networks of low‐cost dual‐frequency global navigation satellite systems (GNSS) receivers can be used to retrieve ionospheric electron content with almost the same level of accuracy as scientific‐grade GNSS ...
A. Kashcheyev, B. Nava, C. Watson, P. T. Jayachandran, R. B. Langley   +4 more
doaj   +1 more source