Results 31 to 40 of about 5,890,374 (272)

Self‐Cleaning Sensor Surfaces for Long‐Term Environmental Monitoring

Advanced Engineering Materials, EarlyView.
Long‐term use of unattended outdoor sensors without soiling or biofouling is achieved through generation of a micro‐ and nanorough cuvette surface by combing hydrophobic nanoparticles with fluorinated polymers, crosslinked and surface‐attached through CHic chemistry. The coating demonstrates self‐cleaning behavior and prolonged outdoor stability, which
Sanam Kumari Rajak, Yasmina Frey, Ulrike Wallrabe, Oswald Prucker, Jürgen Rühe   +4 more
wiley   +1 more source

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

Advanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang, Jianxiang Zhao, Zhaoqi Chen, Hao Gong, Yinsen Yan, Junlei Tao, Yong Yang   +6 more
wiley   +1 more source

Is Gamma-Ray Burst 221009A Really a Once-in-10,000 yr Event?

The Astrophysical Journal
Gamma-ray bursts (GRBs) brighter than the GRB 221009A, the brightest yet observed, have previously been estimated to occur at a rate of one per 10,000 yr, based on the extrapolation of the distribution of fluences of the long-GRB population. We show that
Justin D. Finke, Soebur Razzaque
doaj   +1 more source

Instrument for observing transient cosmic gamma-ray sources for the ISEE-C Heliocentric spacecraft [PDF]

, 1977
Satellite instrumentation that would serve as one element of a three-satellite network to provide precise directional information for the recently discovered cosmic gamma-ray bursts is described. The proposed network would be capable of determining source locations with uncertainties of less than one arc minute, sufficient for a meaningful optical and ...
Evans, W.D., Aiello, W.P., Klebesadel, R.W.   +2 more
openaire   +2 more sources

Effects of dead time losses on terrestrial gamma ray flash measurements with the Burst and Transient Source Experiment [PDF]

Journal of Geophysical Research: Space Physics, 2010
Measurements from the Burst and Transient Source Experiment (BATSE) instrument on the Compton Gamma Ray Observatory (CGRO) are the only ones where characteristics of single terrestrial gamma ray flashes (TGFs) have been obtained thus far. However, it has been reported that the measurements suffer from significant dead time losses which complicates the ...
Gjesteland, Thomas, Østgaard, Nikolai, Connell, P. H., Stadsnes, J., Fishman, G. J.   +4 more
openaire   +3 more sources

Investigating the Low‐Temperature Phase Stability of the Binary Ta–W System

Advanced Engineering Materials, EarlyView.
Atomistic simulations show that the binary Ta–W system forms ordered intermetallic phases, B2‐TaW and D03‐TaW3, as 0 K ground states. Configurational entropy, however, lowers the free energy of the disordered bcc solid solution, which becomes the stable phase above about 400 K.
Klemens Lechner, Anna Sophie Jelinek, Velislava Terziyska, Peter Wagatha, Wolfram Knabl, Christian Mitterer, Helmut Clemens, David Holec   +7 more
wiley   +1 more source

The Complete Catalog of Gamma-Ray Transients Observed by GRBAlpha and VZLUSAT-2 CubeSat Missions

The Astrophysical Journal Supplement Series
We present the largest sample of gamma-ray transients observed by any CubeSat mission so far. Observations were acquired by a 1U CubeSat GRBAlpha, the smallest astrophysical space observatory, and a 3U CubeSat VZLUSAT-2.
Marianna Dafčíková, Jakub Řípa, András Pál, Norbert Werner, Michaela Ďuríšková, Yasushi Fukazawa, Martin Kolář, László Mészáros, Filip Münz, Masanori Ohno, Lea Szakszonová, Hiromitsu Takahashi, Masato Yokota, Jean-Paul Breuer, Hsiang-Kuang Chang, Balázs Csák, Vladimír Dániel, Juraj Dudáš, Marcel Frajt, Gábor Galgóczi, Peter Hanák, Filip Hroch, Chin-Ping Hu, Jan Hudec, Nikola Husáriková, Yuto Ichinohe, Jakub Kapuš, Miroslav Kasal, Martin Koleda, Róbert László, Chih-Hsun Lin, Tsung-Che Liu, Tsunefumi Mizuno, Kazuhiro Nakazawa, Hirokazu Odaka, Michal Pazderka, Aleš Povalač, Maksim Rezenov, Martin Sabol, Kaustubha Sen, Miroslav Šmelko, Petr Svoboda, Martin Topinka, Che-Chih Tsao, Tomáš Urbanec, Ivo Veřtát, Tomáš Vítek, Chih-En Wu   +47 more
doaj   +1 more source

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

Advanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan, Jiafen Song, Jinglong Li, Jiangtao Xiong, Tao Yang   +4 more
wiley   +1 more source

GRB 211024B: An Ultra-long GRB Powered by Magnetar

The Astrophysical Journal
Ultra-long gamma-ray bursts are characterized by exceptionally long-duration central engine activities, with characteristic timescales exceeding 1000 s. We present ground-based optical afterglow observations of the ultra-long gamma-ray burst GRB 211024B,
Shao-Yu Fu, Dong Xu, Wei-Hua Lei, Antonio de Ugarte Postigo, Daniele B. Malesani, David Alexander Kann, Páll Jakobsson, Johan P. U. Fynbo, Elisabetta Maiorano, Andrea Rossi, Diego Paris, Xing Liu, Shuai-Qing Jiang, Tian-Hua Lu, Jie An, Zi-Pei Zhu, Xing Gao, Jian-Yan Wei   +17 more
doaj   +1 more source

Effect of Cu and CuP Additions on the Microstructure and Nanoindentation‐Based Fracture Behavior of CoNiAlSi Ferromagnetic Shape Memory Alloys

Advanced Engineering Materials, EarlyView.
Cu and combined Cu–P microalloying refine the microstructure and enhance the nanoindentation‐derived fracture resistance of CoNiAlSi ferromagnetic shape memory alloys without suppressing the martensitic transformation. Comparative SEM, DSC, and nanoindentation results reveal that the CuP‐containing alloy provides the most balanced response, achieving ...
Mehmet Demir
wiley   +1 more source