Results 1 to 10 of about 198 (133)

ROS production in response to high-power microwave pulses induces p53 activation and DNA damage in brain cells: Radiosensitivity and biological dosimetry evaluation [PDF]

Frontiers in Cell and Developmental Biology, 2023
Background: Pulsed high-power microwave (HPM) has many applications and is constantly being researched to expand its uses in the future. As the number of applications grows, the biological effects and safety level of pulsed HPM become a serious issue ...
Juie Nahushkumar Rana, Juie Nahushkumar Rana, Sohail Mumtaz, Sohail Mumtaz, Eun Ha Choi, Eun Ha Choi, Eun Ha Choi, Ihn Han, Ihn Han   +8 more
doaj   +2 more sources

Investigation of an Axial Virtual Cathode Oscillator with an Open-Ended Coaxial Cathode [PDF]

Journal of Electromagnetic Engineering and Science, 2022
A cathode with an open-ended coaxial structure is experimentally investigated using an axial virtual cathode oscillator (vircator). To enhance the microwave power output, an open-ended coaxial cathode is installed in the axial vircator.
Se-Hoon Kim, Chang-Jin Lee, Wan-Il Kim, Kwang-Cheol Ko   +3 more
doaj   +2 more sources

Limiting Molecular Twisting: Upgrading a Donor-Acceptor Dye to Drive H₂ Evolution. [PDF]

Adv Sci (Weinh)
Mysteric acid co‐adsorbed with the P1 dye onto NiO provides a local apolar environment and reduces photoinduced donor–acceptor twisting of the dye. The resulting larger electrochemical potential enables H2 evolution even in the absence of a proton reduction catalyst.
Zhu K, Rodríguez AP, Brands MB, de Haas T, Buda F, Reek JNH, Mul G, Huijser A.   +7 more
europepmc   +2 more sources

Green upgrading of SPring-8 to produce stable, ultrabrilliant hard X-ray beams. [PDF]

J Synchrotron Radiat
This paper presents an overview of a major upgrade project of SPring‐8, SPring‐8‐II, including ultra‐low‐emittance accelerator design and expected performances. The paper also discusses our approach towards the next generation light source aiming at the reduction of power consumptions.SPring‐8‐II is a major upgrade project of SPring‐8 that was ...
Tanaka H, Watanabe T, Abe T, Azumi N, Aoki T, Dewa H, Fujita T, Fukami K, Fukui T, Hara T, Hiraiwa T, Imamura K, Inagaki T, Iwai E, Kagamihata A, Kawase M, Kida Y, Kondo C, Maesaka H, Magome T, Masaki M, Masuda T, Matsubara S, Matsui S, Ohshima T, Oishi M, Seike T, Shoji M, Soutome K, Sugimoto T, Suzuki S, Tajima M, Takano S, Tamura K, Tanaka T, Taniuchi T, Taniuchi Y, Togawa K, Tomai T, Ueda Y, Yamaguchi H, Yabashi M, Ishikawa T.   +42 more
europepmc   +2 more sources

Transparent and Transient Flexible Electronics. [PDF]

Adv Sci (Weinh)
Transparent electronics has gained tremendous attention in recent years because of the growing demand for see‐through devices in applications such as displays, windscreens, and wearables. This review discusses the recent developments related to transparent electronics as well as the challenges associated with the development of flexible and transient ...
Nair NM, Zumeit A, Dahiya R.
europepmc   +2 more sources

High energy microwave weapon: Electromagnetic bomb [PDF]

Vojnotehnički Glasnik, 2021
Introduction/purpose: Technological progress has led to the actualization of the problem of construction and use of high-energy microwave weapons, especially electromagnetic bombs. However, in the recent military-professional literature, this issue is
Goran M. Banjac, Vladimir D. Đorđević, Miladin Z. Živković, Abdellah Ferdjalid   +3 more
doaj   +1 more source

Investigation of a novel virtual cathode oscillator with decelerating electric field [PDF]

AIP Advances
Traditional virtual cathode oscillators require extremely high operating voltage to generate beam currents exceeding the space charge limiting current to form virtual cathodes, which significantly limits their repetitive operation capability and ...
Wenhao Lian, Jixiong Xiao, Ziyuan Wang, Weiye Lai, Linchuan Song, Shuai Yang   +5 more
doaj   +1 more source

Enhancement in the power of microwaves by the interference with a cone-shaped reflector in an axial vircator

Results in Physics, 2019
A virtual cathode oscillator (vircator) is a special type of oscillator capable of generating high-power microwaves. We studied an axially extracted vircator by installing a cone-shaped reflector in our pulsed power device, “Chundoong” and numerically ...
Sohail Mumtaz, Pradeep Lamichhane, Jun Sup Lim, Sang Ho Yoon, Jung Hyun Jang, Doyoung Kim, Suck Woo Lee, Jin Joo Choi, Eun Ha Choi   +8 more
doaj   +1 more source

Donor–Acceptor Pentacene Analogues With Near‐Infrared Emission and Tunable Aromaticity

Angewandte Chemie, Volume 138, Issue 20, 11 May 2026.
Air‐ and photostable heterocyclic pentacene analogues with donor and acceptor groups flanking a para‐quinodimethane core exhibit large dipole moments, narrow bandgaps, reversible redox behavior, and NIR‐I to NIR‐II absorption and emission with pronounced solvatochromism.
Krzysztof Nowak, Olaf Morawski, Muhammad Yasir Mehboob, Maja Morawiak, Krzysztof Noworyta, Cina Foroutan‐Nejad, Marek Grzybowski   +6 more
wiley   +2 more sources

A Tutorial on the Mechanism of Beam-Field Interactions in Virtual Cathode Oscillators

Plasma
This review article is the third of a three-article introductory series on virtual cathode oscillators. The first article has laid the theoretical ground for understanding the physical properties of the virtual cathode, and the second article has ...
Weihua Jiang
doaj   +1 more source