Results 11 to 20 of about 2,833,435 (268)

What makes low-frequency earthquakes low frequency?

Science Advances, 2023
Low-frequency earthquakes are repetitive seismic events that occur downdip of the seismogenic megathrust where slow aseismic fault slip dominates the tectonic budget. These tiny events, distinct from regular earthquakes, have the potential to provide in-situ constraints on the fault rheology where slow slip occurs, but are hard to study due to their ...
Qing-Yu Wang, William B. Frank, Rachel E. Abercrombie, Kazushige Obara, Aitaro Kato   +4 more
openaire   +2 more sources

Low-Frequency Fatigue [PDF]

Physical Therapy, 2006
Muscle fatigue has been defined as a temporary loss in force or torque-generating ability due to recent muscle contraction.1 The mechanisms underlying muscle fatigue are numerous and may have their origins anywhere from the central nervous system (CNS) to cellular-level cross-bridge cycling.2,3 The major proposed mechanisms of fatigue production are ...
R Benjamin, Keeton, Stuart A, Binder-Macleod   +1 more
openaire   +2 more sources

LOFAR: The LOw-Frequency ARray [PDF]

Astronomy & Astrophysics, 2005
56 pages, 34 figures, accepted for publication by A& ...
van Haarlem, M. P., Wise, M. W., Gunst, A. W., Heald, G., McKean, J. P., Hessels, J. W. T., de Bruyn, A. G., Nijboer, R., Swinbank, J., Fallows, R., Brentjens, M., Nelles, A., Beck, R., Falcke, H., Fender, R., Hörandel, J., Koopmans, L. V. E., Mann, G., Miley, G., Röttgering, H., Stappers, B. W., Wijers, R. A. M. J., Zaroubi, S., van den Akker, M., Alexov, A., Anderson, J., Anderson, K., van Ardenne, A., Arts, M., Asgekar, A., Avruch, I. M., Batejat, F., Bähren, L., Bell, M. E., Bell, M. R., van Bemmel, I., Bennema, P., Bentum, M. J., Bernardi, G., Best, P., Bîrzan, L., Bonafede, A., Boonstra, A.-J., Braun, R., Bregman, J., Breitling, F., van de Brink, R. H., Broderick, J., Broekema, P. C., Brouw, W. N., Brüggen, M., Butcher, H. R., van Cappellen, W., Ciardi, B., Coenen, T., Conway, J., Coolen, A., Corstanje, A., Damstra, S., Davies, O., Deller, A. T., Dettmar, R.-J., van Diepen, G., Dijkstra, K., Donker, P., Doorduin, A., Dromer, J., Drost, M., van Duin, A., Eislöffel, J., van Enst, J., Ferrari, C., Frieswijk, W., Gankema, H., Garrett, M. A., de Gasperin, F., Gerbers, M., de Geus, E., Grießmeier, J.-M., Grit, T., Gruppen, P., Hamaker, J. P., Hassall, T., Hoeft, M., Holties, H. A., Horneffer, A., van der Horst, A., van Houwelingen, A., Huijgen, A., Iacobelli, M., Intema, H., Jackson, N., Jelic, V., de Jong, A., Juette, E., Kant, D., Karastergiou, A., Koers, A., Kollen, H., Kondratiev, V. I., Kooistra, E., Koopman, Y., Koster, A., Kuniyoshi, M., Kramer, M., Kuper, G., Lambropoulos, P., Law, C., van Leeuwen, J., Lemaitre, J., Loose, M., Maat, P., Macario, G., Markoff, S., Masters, J., McFadden, R. A., McKay-Bukowski, D., Meijering, H., Meulman, H., Mevius, M., Middelberg, E., Millenaar, R., Miller-Jones, J. C. A., Mohan, R. N., Mol, J. D., Morawietz, J., Morganti, R., Mulcahy, D. D., Mulder, E., Munk, H., Nieuwenhuis, L., van Nieuwpoort, R., Noordam, J. E., Norden, M., Noutsos, A., Offringa, A. R., Olofsson, H., Omar, A., Orrú, E., Overeem, R., Paas, H., Pandey-Pommier, M., Pandey, V. N., Pizzo, R., Polatidis, A., Rafferty, D., Rawlings, S., Reich, W., de Reijer, J.-P., Reitsma, J., Renting, G. A., Riemers, P., Rol, E., Romein, J. W., Roosjen, J., Ruiter, M., Scaife, A., van der Schaaf, K., Scheers, B., Schellart, P., Schoenmakers, A., Schoonderbeek, G., Serylak, M., Shulevski, A., Sluman, J., Smirnov, O., Sobey, C., Spreeuw, H., Steinmetz, M., Sterks, C. G. M., Stiepel, H.-J., Stuurwold, K., Tagger, M., Tang, Y., Tasse, C., Thomas, I., Thoudam, S., Toribio, M. C., van der Tol, B., Usov, O., van Veelen, M., van der Veen, A.-J., ter Veen, S., Verbiest, Joris, Vermeulen, R., Vermaas, N., Vocks, C., Vogt, C., de Vos, M., van der Wal, E., van Weeren, R., Weggemans, H., Weltevrede, P., White, S., Wijnholds, S. J., Wilhelmsson, T., Wucknitz, O., Yatawatta, S., Zarka, P., Zensus, A.   +199 more
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Low-Frequency Noise: Experiences from a Low-Frequency Noise Perceiving Population

International Journal of Environmental Research and Public Health, 2023
Although low-frequency noise (LFN) is associated with various complaints, there is still much unknown about this phenomenon. This research aims to provide an extensive description of (1) LFN perceptions, (2) LFN-related complaints, and (3) the characteristics of LFN complainants. In an explorative observational cross-sectional survey study, a sample of
Kristina H. Erdélyi, Anselm B. M. Fuermaier, Lara Tucha, Oliver Tucha, Janneke Koerts   +4 more
openaire   +3 more sources

Low frequency interchanges [PDF]

Plasma Physics, 1970
A necessary stability criterion is derived for a class of selfconsistent low beta longtime guiding centre equilibria. This class is defined by some restrictions, viz. symmetry, zero electric field, small ratio of guiding centre drift velocities and diamagnetic velocities, and stability on the time scale of the longitudinal guiding centre motion.
openaire   +6 more sources

Measuring low frequency tilts

Journal of Research of the National Institute of Standards and Technology, 1993
A borehole tiltmeter with a sensitivity of a few nanoradians is described. It is composed of two orthogonal horizontal pendulums with free periods of 1 s. The pendulums are insensitive to barometric pressure fluctuations, and the measured temperature coefficient is less than 30 nrad/°C.
Kohl, M. L., Levine, J.
openaire   +2 more sources

The efficiency of hearing protective devices against occupational low frequency noise in comparison to the new subjective suggested method

International Journal of Preventive Medicine, 2022
Backround: Noise is one of the most important occupational and environmental health hazards. Exposure to loud noise can cause irrevocable hearing damage and loss of hearing.
Farhad Forouharmajd, Kamyar Nazaryan, Adrian Fuente, Siamak Pourabdian, Hadi Asady   +4 more
doaj   +1 more source

A Helmholtz Resonator with Spiral Neck for Analyte Concentration Measurement in Low Frequency Range

Applied Sciences, 2020
Helmholtz resonators (HR) have been proven to have feasibility for sensor applications with good performance. However, for biosensor application, when the amount of test sample is limited, the operating frequency tends to be very high, which may bring ...
Yugang Chen, Bomi Lee, Yong-Hwa Park
doaj   +1 more source

Optimized Weight Low-Frequency Search Coil Magnetometer for Ground–Airborne Frequency Domain Electromagnetic Method

Sensors, 2023
The vertical component magnetic field signal in the ground–airborne frequency domain electromagnetic (GAFDEM) method is detected by the air coil sensor, which is parallel to the ground.
Fei Teng, Ye Tong, Bofeng Zou
doaj   +1 more source

Low-Frequency Quantum Sensing

Physical Review Applied, 2022
Exquisite sensitivities are a prominent advantage of quantum sensors. Ramsey sequences allow precise measurement of direct current fields, while Hahn-echo-like sequences measure alternating current fields. However, the latter are restrained for use with high-frequency fields (above approximately $1$ kHz) due to finite coherence times, leaving less ...
E.D. Herbschleb, I. Ohki, K. Morita, Y. Yoshii, H. Kato, T. Makino, S. Yamasaki, N. Mizuochi   +7 more
openaire   +2 more sources