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- Physics 1
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1381
Hydroacoustic communication channel capacity
Published 2023-02-01“…A novel expression derived for the spectral level of sea noise caused by sea surface waves is based on piecewise linear approximation of the curves of the spectral levels of noise obtained from four sources: turbulence, shipping, sea waves, and the thermal noise of the sea. …”
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1382
Oscillatory properties of strange quark stars described by the vector MIT bag model
Published 2025-05-01“…All these last results are important in distinguishing strange stars from ordinary neutron stars in future gravitational-wave detections coming from compact sources with activated non-radial modes.…”
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1383
Weak Near‐Field Behavior of a Tsunami Earthquake: Toward Real‐Time Identification for Local Warning
Published 2019-08-01“…Previous teleseismic observations found that they radiate seismic waves weakly. They should therefore not be strongly felt in the near field, but to date no near‐source seismic recordings of these events exist that confirm this. …”
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1384
High-speed noncontact acoustic inspection using acoustic irradiation induced vibration from unmanned aerial vehicle
Published 2024-11-01“…However, when the sound source is mounted on the UAV, the position of the sound source can be directly opposed to the surface to be measured, and this environmental noise and angle dependency problem is expected to be solved. …”
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1385
Single Terminal Transient Protection Scheme Based on Fuzzy Multi-criteria Fusion
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1386
Computer Modeling in the Application to Geothermal Engineering
Published 2021-01-01“…The novelty of the obtained research results: (i) developed the mathematical model of the physical process of origin and distribution in the bowels of the density of geothermal energy of the Earth from the surface to its center, which is the density of internal energy of an elementary geological object, and which increases when approaching the center of the planet; (ii) developed the mathematical model of the thermal energy source of infrared (IR) waves of the elementary geophysical object of the Earth’s interior depending on the depth of its occurrence, which allows to determine the stable generation of geothermal energy by rocks in a deep well for extraction and conversion into electricity and to study the geological structure and physical properties of the Earth’s interior; (iii) the mathematical model of heat exchange between the layers of the Earth’s subsoil with the thermal energy of infrared waves according to the laws of Fourier thermal conductivity and Stefan–Boltzmann heat transfer, which together with the geothermal energy source model allows to determine a thermal capacity of rocks in a deep well; (iv) developed the mathematical model of stable action of a source of thermal energy in the center of mass of the Earth, in the absence of which it is hard to explain the power of its endogenous infrared heat flux, parameters of geothermal energy distribution in the Earth, and the current thermodynamic state of the atmosphere, and the change in temperature of which depends on the thermophysical parameters of the physical-chemical composition of the atmosphere more than on changes in the thermal activity of the Sun; (v) determination of new numerical values: thermophysical parameters of the Earth’s interior; kinetic, potential and own gravitational energy of the Earth and own gravitational energy of the planets of the Solar System.…”
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1387
Visible Triple-Wavelength Switchable Emission Generated in Passively Q-Switched Nd:YVO<sub>4</sub> Self-Raman Laser
Published 2025-07-01“…An angle-tuned BBO crystal was used to achieve the frequency mixing between the first-tokes wave and the fundamental wave. At an incident pump power of 9.5 W, the maximum average output powers were 425 mW for the 589 nm yellow laser, 193 mW for the 560 nm lime laser, and 605 mW for the 533 nm green laser, with corresponding pulse widths of approximately 3.8, 3.6, and 35.1 ns, respectively. …”
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1388
A techno-economic assessment of power-to-gas to produce hydrogen by TALOS
Published 2025-10-01“…Diversifying renewable energy sources ensures the effort to fulfil market demand comes into being. …”
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1389
State-of-the-art Gaidai hypersurface reliability assessment for semi-submersible wind turbines, accounting for memory effects
Published 2025-04-01“…Resultingly, offshore wave and wind power are gaining popularity, steadily replacing hydrocarbon energy sources. …”
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1390
Global Variability in Reported Mortality for Critical Illness during the 2009-10 Influenza A(H1N1) Pandemic: A Systematic Review and Meta-Regression to Guide Reporting of Outcomes...
Published 2016-01-01“…Mortality for the first wave was non-significantly higher than wave two (P = 0.66). …”
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1391
Discontinuity of social support among US adults with cognitive impairment before and after the confirmed diagnosis of dementia: a matched ambidirectional cohort study
Published 2025-07-01“…Methods In this ambidirectional cohort study, we examined ten waves of data from the Health and Retirement Survey(HRS) for US adults over 50 through 2000–2018. …”
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1392
Evaluating Remote Sensing Resolutions and Machine Learning Methods for Biomass Yield Prediction in Northern Great Plains Pastures
Published 2025-02-01“…The top-ranked features (52 tested) from recursive feature elimination (RFE) were short-wave infrared 2, normalized difference moisture index, and average turf soil temperature in the machine learning (ML) model developed. …”
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1393
Multiple anthropometric measures and proarrhythmic 12-lead ECG indices: A mendelian randomization study.
Published 2023-08-01“…We utilized mendelian randomization (MR) to explore causal relevance of multiple anthropometric measures on P-wave duration (PWD), PR interval, QRS duration, and corrected QT interval (QTc).…”
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1394
Local laser fluence estimation in optical resolution optoacoustic angiography employing calibrated ultrasound detector
Published 2025-08-01“…The model incorporates acoustic propagation effects from an optoacoustic source to a spherically focused detector with limited aperture and bandwidth, offering a more comprehensive understanding of how fluence and ultrasonic sensitivity are interconnected. …”
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1395
High-power microsecond ultraviolet burst-mode pulse laser with a rectangular envelope and GHz-adjustable intra-burst pulses
Published 2025-01-01“…In the fiber seed, a high-bandwidth electro-optic modulator is employed to modulate a continuous-wave (CW) laser into a pulse train at GHz frequency. …”
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1396
Organizace českého exilu v Austrálii v letech 1948–1989
Published 2015-01-01“… The communist coup in Czechoslovakia in 1948 produced a huge emigration wave to Western Europe, America and, rather surprisingly, Australia. …”
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1397
Directional characteristics of a planar annular plate for axially-symmetric free vibrations
Published 2000-01-01“…There is solved a coastal problem of the acoustic wave radiation at Fraunhofer zone for a planar annular plate vibrating harmonically. …”
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1398
Byzantine Reconquista (10th–11th Centuries) and the Attacks on Christians in the Lands of Islam (Egypt, Syria and Iraq)
Published 2024-12-01“…The paper discusses a wave of attacks on Christians in the lands of Islam that accompanied Byzantine victories on the battlefield in 10th–11th centuries, including pogroms and attacks in the capital of Egypt, Antioch, Alexandria, and Daqūqā’, which were clearly linked with the fear or anger towards Byzantines, as well as events in Damascus, Al-Ramla, Caesarea, Ascalon and Tinnis, in case of which the link with Byzantium is not mentioned by the sources. …”
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1399
Investigation of the acoustic field distribution in piezoelectric transducers by the bragg diffraction method
Published 2016-03-01“…Quartz and LiIO3 transducers with a fundamental frequency of 200-400 MHz were the sources of a longitudinal acoustic wave. The transducer length was several mm, and the transducer width was about 1 mm. …”
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1400
The complex rupture evolution of the long and slow, tsunamigenic 2021 South Sandwich Islands earthquake
Published 2025-05-01“…To robustly analyse the detailed seismic source process of this long-source duration (over 200 s) event occurring in a convexly shaped subduction zone, we applied the Potency Density Tensor Inversion with a non-rectangular and non-planar source surface to the broadband teleseismic P-waves. …”
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