Results 61 to 70 of about 1,492,115 (344)

Excitation of ULF, ELF, and VLF Resonator and Waveguide Oscillations in the Earth–Atmosphere–Ionosphere System by Lightning Current Sources Connected with Hunga Tonga Volcano Eruption

Atmosphere
The simulations presented here are based on the observational data of lightning electric currents associated with the eruption of the Hunga Tonga volcano in January 2022.
Yuriy G. Rapoport, Volodymyr V. Grimalsky, Andrzej Krankowski, Asen Grytsai, Sergei S. Petrishchevskii, Leszek Błaszkiewicz, Chieh-Hung Chen   +6 more
doaj   +1 more source

Comparison between robotic‐assisted and laparoscopic sphincter‐preserving operations for ultra‐low rectal cancer

Annals of Gastroenterological Surgery, 2022
Aim Sphincter‐preserving operations for ultra‐low rectal cancer include low anterior and intersphincteric resection. In low anterior resection, the distal rectum is divided by a transabdominal approach, which is technically demanding. In intersphincteric
Tadahiro Kojima, Hitoshi Hino, Akio Shiomi, Hiroyasu Kagawa, Yusuke Yamaoka, Shoichi Manabe, Shunichiro Kato, Marie Hanaoka   +7 more
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Frequency Selective Rasorber With Low Insertion Loss and Ultra‐Broadband Scattering Reduction

Advanced Physics Research
This article proposes a dual‐polarization broadband frequency selective rasorber (FSR) based on a composite metasurface structure, achieving ultra‐wide absorption bands on both sides of the transmission band. The vertically stacked configuration consists
Ziming Yu, Chong He, Liping Liu, Liming Si, Weiren Zhu   +4 more
doaj   +1 more source

Deep Reinforcement Learning-Based Approach for Proportional Resonance Power System Stabilizer to Prevent Ultra-Low-Frequency Oscillations

IEEE Transactions on Smart Grid, 2020
Recent studies have shown that due to the hammer effect of the governor, hydropower units are easily creating negative damping torque at the common mode frequency (below 0.1 Hz).
Guozhou Zhang, Weihao Hu, Di Cao, Qi Huang, Jianbo Yi, Zhe Chen, F. Blaabjerg   +6 more
semanticscholar   +1 more source

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

Molecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen, Lucrezia De Santis, Bret M. Stephens, Vincent Bernard, Jörg C. Kalff, Lara Braun, Phillipp Leyendecker, Johannes Röttgen, Daniel Weissinger, Anirban Maitra, Paola A. Guerrero, Alexander Semaan   +11 more
wiley   +1 more source

Preseismic ULF effectand possible interpretation

Annals of Geophysics, 2004
We present the results of ULF magnetic field observation at Karimshino station (Kamchatka, Russia). Using a case study we discovered an effect of suppression of ULF intensity about 2-6 days before rather strong and isolated seismic shocks (magnitude M ...
M. S. Solovieva, G. G. Belyaev, E. Fedorov, A. Yu. Schekotov, O. A. Molchanov, M. Hayakawa   +5 more
doaj   +1 more source

Design and Analysis of Double-Gate MOSFETs for Ultra-Low Power Radio Frequency Identification (RFID): Device and Circuit Co-Design

, 2011
Recently, double-gate MOSFETs (DGMOSFETs) have been shown to be more optimal for ultra-low power circuit design due to the improved subthreshold slope and the reduced leakage current compared to bulk CMOS.
Dasgupta, Sudeb., Agarwal, Rajendra P., Low Power Electronics, Rajendra P. Agarwal, Kim, Tony Tae-Hyoung, Sudeb Dasgupta, Tony T. Kim, Ramesh Vaddi, Vaddi, Ramesh.   +8 more
core   +1 more source

Ultra-low-power second-order nonlinear optics on a chip

, 2021
Second-order nonlinear optical processes are used to convert light from one wavelength to another and to generate quantum entanglement. Creating chip-scale devices to more efficiently realize and control these interactions greatly increases the reach of ...
Christopher J. Sarabalis (14383206), Jatadhari Mishra (10886025), Amir H. Safavi-Naeini (14357847), Hubert S. Stokowski (14366091), Vahid Ansari (11979837), Jason F. Herrmann (14383386), Marc Jankowski (8043689), Carsten Langrock (5585486), Martin M. Fejer (9746343), Timothy P. McKenna (14362434)   +9 more
core   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source