Results 41 to 50 of about 181,882 (261)

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

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 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

Metastatic niche shaped by host factors influences disseminated cancer cell fate

FEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward, Álvaro Ruiz‐Tabas, Patricia Altea‐Manzano   +2 more
wiley   +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

Ultra low frequency estimation: a neglected apportion [PDF]

Proceedings of the 9th International Conference on Neural Information Processing, 2002. ICONIP '02., 2002
Most frequency estimation techniques exhibit larger estimation errors in the ultra low frequency (ULF) region (0-10 Hz asymptotically) as compared to higher frequency ranges. This paper examines this situation and proposes to model the estimation errors through function approximation thereby making a priori error estimates available for new signals ...
Tan, Alfred C.H., Choudhury, A., Ong, Y.S., Veres, S.M.   +3 more
openaire   +1 more source

Smaller is better: nanobodies meet NMR

FEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

Instability and ultra-high frequency spectrum pulse train in passively Q-switched Yb:LuAG ceramic laser

AIP Advances
The ultra-high-frequency pulse trains in a Yb:LuAG passively Q-switched laser with a Yb ratio of 15 at. % are experimentally investigated. The pulse trains consist of a low-frequency harmonic spectrum pulse train with a fundamental frequency below 500 ...
Min Dai
doaj   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

FEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

Power converter for ultra low-frequency and low-voltage energy harvesters

Micro and Nano Systems Letters
Energy conversion mechanisms present in some harvesters are only able to provide very low voltage (mV) and frequency (few Hz) electrical signals, which may also have a bipolar nature (AC).
Mikel Hualde-Otamendi, Carlos A. De La Cruz-Blas, J. Carlos Castellano-Aldave, Alfonso Carlosena   +3 more
doaj   +1 more source