Results 61 to 70 of about 372,868 (297)

Study on the Main Factors of Frequency Variation of LC Resonant Prestress Detection Method

Advances in Materials Science and Engineering, 2020
Stress loss of prestressed steel strands of existing bridges influences their bearing capacity, so it is of great significance to realize the stress detection. A steel strand that has an inductive property is designed into the resonant circuit, which can
Benniu Zhang, Yuanyuan Zhao, Xingxing Li, Yanpeng Su, Qiang Yin, Jianhui Jiang   +5 more
doaj   +1 more source

Surface Resistance Imaging with a Scanning Near-Field Microwave Microscope

, 1997
We describe near-field imaging of sample sheet resistance via frequency shifts in a resonant coaxial scanning microwave microscope. The frequency shifts are related to local sample properties, such as surface resistance and dielectric constant.
Anlage, Steven M., Dutta, S. K., Steinhauer, D. E., Vlahacos, C. P., Wellstood, F. C.   +4 more
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Measurement of Resonant Frequency and Quality Factor of Microwave Resonators: Comparison of Methods

, 1998
Precise microwave measurements of sample conductivity, dielectric, and magnetic properties are routinely performed with cavity perturbation measurements.
Aitken J. E., Ashley J. R., Leong K., Miura T., Paul J. Petersan, Sanchez M. C., Steven M. Anlage   +6 more
core   +1 more source

Transient dynamics of molecular devices under step-like pulse bias [PDF]

, 2009
We report first principles investigation of time-dependent current of molecular devices under a step-like pulse.Our results show that although the switch-on time of the molecular device is comparable to the transit time, much longer time is needed to ...
Wang, Bin, Wang, Jian, Xing, Yanxia, Zhang, Lei   +3 more
core   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Reflection oscillators employing series resonant crystals' [PDF]

, 1989
A reflection oscillator is provided which employs an active device operated in its roll-off region and two resonant circuits. For an oscillator employing a bipolar transistor, the emitter is connected to a series resonant capacitor-crystal network and ...
Kleinberg, Leonard L.
core   +1 more source

Resonance beyond frequency-matching: multidimensional resonance

New Journal of Physics, 2017
Resonance, conventionally defined as the oscillation of a system when the temporal frequency of an external stimulus matches a natural frequency of the system, is important in both fundamental physics and applied disciplines. However, the spatial character of oscillation is not considered in this definition.
Zhenyu Wang, Mingzhe Li, Ruifang Wang
openaire   +2 more sources