Results 111 to 120 of about 1,492,115 (344)

Ultra-low frequency energy harvesting using bi-stability and rotary-translational motion in a magnet-tethered oscillator

, 2020
Harvesting ultra-low frequency random vibration, such as human motion or turbine tower oscillations, has always been a challenge, but could enable many potential self-powered sensing applications.
Ben Gunn (2870369), Imad Abdallah (9314414), Hailing Fu (7308482), Stephanos Theodossiades (1247457), Eleni Chatzi (6437609)   +4 more
core  

Sudden commencement event of 17 April 2002: Aspects of the geomagnetic response at low latitudes [PDF]

, 2005
An analysis of a sudden commencement (SC) manifestation reveals a significant contribution of the polar current system which influences the long-term behavior of the H component at low-latitude ground stations located in the subsolar sector. A transition
Zhang, T.L., P. Di Giuseppe, M. Piersanti, M. Vellante, Villante, U., T. L. Zhang, Di Giuseppe, P., W. Magnes, Vellante, M., Magnes, W., Villante U., Piersanti, M.   +11 more
core   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Global Impacts of Ultra‐Low‐Frequency Waves: 1. Thermospheric Responses and Traveling Atmospheric Disturbances

Geophysical Research Letters
Ultra‐low‐frequency (ULF) waves cause local Thermosphere‐Ionosphere (T‐I) perturbations, but their impacts on the global T‐I system including the generation of Traveling Atmospheric Disturbances (TADs) have never been evaluated.
Haonan Wu, Wenbin Wang, Xueling Shi, Dong Lin, Michael D. Hartinger, Joseph B. H. Baker, Shibaji Chakraborty   +6 more
doaj   +1 more source

Scalp ultra-low frequency electroencephalography

, 2018
Electrical activities of the brain include the regular electroencephalogram (AC-EEG, typically 0.5Hz<f<70 Hz) as well as slow potentials (DC-EEG, f < 0.1Hz). According to recent studies, slow or DC potentials displacements (DC-EEG) are informative features, highly associated with a pathology of diverse neurological disorders.
openaire   +1 more source

An ultra-low power CMOS random number generator

, 2008
This paper proposes an ultra-low power CMOS random number generator (RING), which is based on an oscillator-sampling architecture. The noisy oscillator consists of a dual-drain MOS transistor, a noise generator and a voltage control oscillator.
Zhang, W, Wu, NJ, Chinese Acad Sci, Inst Semicond, Natl Lab Superlattices & Microstruct, POB 912, Beijing 100083, Peoples R China. 电子邮箱地址: nanjian@red.semi.ac.cn, Wu, NJ, Zhou, SH   +3 more
core  

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Ultra low frequency pressure transducer calibration

, 1994
This work is devoted to description of practical experience in solution of several scientific and technical problems arising in ocean environmental ultra low frequency acoustic field measurements fulfilled by means of pressure piezoelectric transducer ...
Semenov, A., A.G. SEMENOV
core   +1 more source

Risk Prediction Models for Recurrence After Curative Treatment of Early‐Stage or Locally Advanced Lung Cancer: A Systematic Review

Aging and Cancer, EarlyView.
This systematic review synthesizes prognostic models for survival and recurrence in resected non‐small cell lung cancer. While many models demonstrate moderate to good discrimination, few are externally validated and reporting quality is variable, limiting clinical applicability and highlighting the need for robust, transparent model development ...
Evangeline Samuel, S. Tissera, E. Paul, J. Zalcberg, R. G. Stirling   +4 more
wiley   +1 more source

Synchronous assessment of CSF and cerebral arteriovenous flow interactions across ultra-low, low, respiratory, and cardiac frequencies using real-time phase-contrast MRI

NeuroImage
Cerebrospinal fluid (CSF) oscillations are traditionally viewed as passive responses to cardiac-driven cerebral blood volume (CBV) fluctuations. However, the origins of their respiratory, low-, and ultra-low-frequency components remain unclear.
Pan Liu, Kimi Owashi, Heimiri Monnier, Jean-Marc Constans, Cyrille Capel, Olivier Balédent   +5 more
doaj   +1 more source