Results 51 to 60 of about 5,433 (258)

Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59

Astronomische Nachrichten, EarlyView.
ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz, Stefan Dreizler, René Heller   +2 more
wiley   +1 more source

Laser‐Induced Iron Doping of Spinel Thin Film Electrocatalyst: Impact of Pulsed Laser Processing on Surface Cobalt Oxide Doping and Oxygen Evolution Reaction Activity

ChemCatChem, EarlyView.
Laser‐induced Fe doping of Co3O4 thin films enables pulse‐controlled, depth‐selective modification. Correlating doping profiles with SECCM maps reveals optimal OER activity at intermediate Fe levels, establishing PUDEL as a precise tool for tailoring model electrocatalyst surfaces.
Dana Schellenburg, S. Shukla, A. E. P. Mendoza, L. M. Banatheth, C. H. Scharf, N. Hartmann, O. M. Magnussen, U. Hagemann, C. Andronescu, S. Barcikowski, S. Reichenberger   +10 more
wiley   +1 more source

Comprehensive X-Ray Observations of the Exceptional Ultralong X-Ray and Gamma-Ray Transient GRB 250702B with Swift, NuSTAR, and Chandra: Insights from the X-Ray Afterglow Properties

The Astrophysical Journal Letters
GRB 250702B is an exceptional transient that produced multiple episodes of luminous gamma-ray radiation lasting for >25 ks, placing it among the class of ultralong gamma-ray bursts (GRBs). However, unlike any known GRB, the Einstein Probe detected soft-X-
Brendan O’Connor, Ramandeep Gill, James DeLaunay, Jeremy Hare, Dheeraj Pasham, Eric R. Coughlin, Ananya Bandopadhyay, Akash Anumarlapudi, Paz Beniamini, Jonathan Granot, Igor Andreoni, Jonathan Carney, Michael J. Moss, Ersin Göğüş, Jamie A. Kennea, Malte Busmann, Simone Dichiara, James Freeburn, Daniel Gruen, Xander J. Hall, Antonella Palmese, Tyler Parsotan, Samuele Ronchini, Aaron Tohuvavohu, Maia A. Williams   +24 more
doaj   +1 more source

One‐Pot Transition‐Metal‐Free Methods for the Synthesis of All Three Bonds of the Alkyne's Triple Bond

Chemistry – A European Journal, EarlyView.
One‐pot transition‐metal‐free methods for the synthesis of all three bonds of the alkyne's triple bond are reviewed. After analysis of several named reactions and discussion of improvements, recent advances in the synthesis of alkynes are discussed. Each section contains a proposed reaction mechanism and analysis of the strengths and weaknesses of the ...
Eugene Kim, Yu Wu, Judith N. Currano, Jianyou Mao, Patrick J. Walsh   +4 more
wiley   +1 more source

Optimal model‐based design of experiments for parameter precision: Supercritical extraction case

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study investigates the process of chamomile oil extraction from flowers. A parameter‐distributed model consisting of a set of partial differential equations is used to describe the governing mass transfer phenomena in a cylindrical packed bed with solid chamomile particles under supercritical conditions using carbon dioxide as a solvent ...
Oliwer Sliczniuk, Pekka Oinas
wiley   +1 more source

Hydrothermal Alkali‐Assisted Growth of Highly In‐Plane Crystallized Poly(Heptazine Imide) for Photocatalytic H2O2 Production

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A new re‐crystallization strategy was employed to design a highly crystallized poly(heptazine imide) photocatalyst, achieving strong light absorption capacity, accelerated separation/migration of photocarriers, and enhanced proton extraction capability simultaneously.
Xiaojuan Zhi, Hongguan Li, Yuxin Zhu, Xinglong Li, Jinfu Zhao, Zhongbiao Li, Jian Zeng, Jihoon Choi, Suvankul Nurmanov, Olim Ruzimuradov, Shulan Wang, Li Li   +11 more
wiley   +1 more source

When species are lost but functions persist: a trait‐based perspective on Wadden Sea bird diversity dynamics

Oikos, EarlyView.
Biodiversity faces several global threats and communities are likely to show complex delayed responses. Accurately measuring these lags is critical to properly understand diversity dynamics. Here, we investigated these delays with minimal data availability and found critical mismatches between the temporal dynamics of taxonomic and functional diversity
Lucie Kuczynski, Ana Maria Bastidas‐Urrutia, Jan Bernhard Kalusche, Christian Hof, Gregor Scheiffarth, Alexey Ryabov, Helmut Hillebrand   +6 more
wiley   +1 more source

GRB 241030A: Multicomponent Origin of Early Emission from the Photosphere and Internal and External Shocks

The Astrophysical Journal
We present a detailed analysis of the long-duration GRB 241030A detected by Swift. Thanks to the rapid response of the X-Ray Telescope (XRT) and Ultraviolet/Optical Telescope, the strongest part of the prompt emission of GRB 241030A has been well ...
Qiu-Li Wang, Hao Zhou, Yun Wang, Jia Ren, Samaporn Tinyanont, Dong Xu, Ning-Chen Sun, Johan P. U. Fynbo, Daniele B. Malesani, Jie An, Rungrit Anutarawiramkul, Pathompong Butpa, Shao-Yu Fu, Shuai-Qing Jiang, Xing Liu, Kritsada Palee, Pakawat Prasit, Zi-Pei Zhu, Lu-Yao Jiang, Zhi-Ping Jin, Da-Ming Wei   +20 more
doaj   +1 more source

Nachtsicht ins All mit dem bloßen Auge: Sag mir, wie weit die Sterne steh'n

Physik in unserer Zeit, EarlyView.
Beim Blick in den Nachthimmel sehen wir ohne optische Hilfsmittel und abhängig von der lokalen Lichtverschmutzung viele Hundert bis maximal einige Tausend Sterne und auch einige Galaxien. Aber wie weit sind diese von uns entfernt? Und bis zu welchen maximalen Entfernungen können wir Objekte im Weltall mit dem bloßen Auge wahrnehmen?
Michael Vollmer
wiley   +1 more source

EP241021a: A Months-duration X-Ray Transient with Luminous Optical and Radio Emission

The Astrophysical Journal Letters
We present the discovery of a peculiar X-ray transient, EP241021a, by the Einstein Probe (EP) mission and the results from multiwavelength follow-up observations.
Xinwen Shu, Lei Yang, Haonan Yang, Fan Xu, Jin-Hong Chen, Rob A. J. Eyles-Ferris, Lixin Dai, Yunwei Yu, Rong-Feng Shen, Luming Sun, Hucheng Ding, WeiKang Zheng, Ning Jiang, Wenxiong Li, Ning-Chen Sun, Dong Xu, Zhumao Zhang, Chichuan Jin, Arne Rau, Tinggui Wang, Xue-feng Wu, Weimin Yuan, Bing Zhang, Kirpal Nandra, Alexei V. Filippenko, Frédérick Poidevin, Roberto Soria, Amit Kumar, David S. Aguado, Fangxia An, Tao An, Jie An, Moira Andrews, Rungrit Anutarawiramkul, Pietro Baldini, Thomas G. Brink, Pathompong Butpan, Zhiming Cai, Alberto J. Castro-Tirado, Huaqing Cheng, Weiwei Cui, Joseph Farah, Shaoyu Fu, Johan P.U. Fynbo, Xing Gao, Dawei Han, Xuhui Han, D. Andrew Howell, Jingwei Hu, Shuaiqing Jiang, Brajesh Kumar, Weihua Lei, Dongyue Li, Chengkui Li, Huaqiu Liu, Xing Liu, Yuan Liu, Xiaowei Liu, Alicia López-Oramas, David López Fernández-Nespral, Justyn R. Maund, Curtis McCully, Zexi Niu, Megan Newsome, Paul O’Brien, Haiwu Pan, Yu Pan, Estefania Padilla Gonzalez, Ismael Pérez-Fournon, Walter Silima, Hui Sun, Shengli Sun, Xiaojin Sun, Giacomo Terreran, Samaporn Tinyanont, Junxian Wang, Yanan Wang, Yun Wang, Klaas Wiersema, Yunfei Xu, Yongquan Xue, Yi Yang, Fabao Zhang, Juan Zhang, Pinpin Zhang, Wenda Zhang, Yonghe Zhang, Haisheng Zhao, Zipei Zhu, Liping Xin, Zhuheng Yao, Bertrand Cordier, Jianyan Wei, Yulei Qiu, Frédéric Daigne   +94 more
doaj   +1 more source