Suggested Topics within your search.
Suggested Topics within your search.
- Physics 1
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1641
A chip-based optoelectronic-oscillator frequency comb
Published 2025-07-01“…A critical application that exploits the coherence and high repetition rate of microcombs is microwave and millimeter-wave generation. Latest endeavor applying two-point optical frequency division (OFD) to photonic-chip-based microcombs has created microwaves with remarkably low phase noise. …”
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1642
The association between BMI and cognition in India: data from the Longitudinal Aging Study in India (LASI)
Published 2024-10-01“…Existing evidence from cross-sectional data in low- and middle-income settings is inconsistent, and many studies do not adequately address potential sources of bias. Methods We used data from Wave 1 of the Longitudinal Aging Study in India (LASI) (analytic N = 56,753) to estimate the association between BMI categories and cognitive functioning among older adults aged 45 + years using survey-weighted linear regression models stratified by gender and controlling for potential confounders including demographic factors, socio-economic status (SES) characteristics, and health-related behaviors. …”
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1643
Exposure to smoking tobacco, roll-your-own tobacco, heated tobacco product, and e-cigarette advertising in 28 European countries
Published 2024-09-01“…Methods We performed a secondary analysis of wave 93.2 of the Eurobarometer survey, which was conducted in 28 European countries during August–September 2020. …”
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1644
Modern Historicism: the Universal History of E. Toffler
Published 2022-02-01“…“The Third Wave”, “Shock of the Future”), as well as texts of authors who thematized the universal historical model of understanding the historical process (G. …”
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1645
Sonic Boom Impact Assessment of European SST Concept for Milan to New York Supersonic Flight
Published 2025-05-01“…Aerodynamic numerical simulations were carried out using an open-source code to capture near-field pressure signatures at three critical mission points. …”
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1646
Ultrasound enhances the recycling process and mechanism of lithium from spent LiFePO4 batteries by Acidithiobacillus ferrooxidans
Published 2025-07-01“…Black powder reduced the consumption of reagents and subsequent pressure for treating iron-bearing minerals using the iron source in waste LiFePO4 batteries. This study used ultrasonic waves to remove impurities on the surface and cracks in battery black powder, hindering the dissolution layer and enhancing the leaching effect through a cavitation reaction and microbial activation to promote the leaching process. …”
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1647
Three Configurations of Compact Planar Multistub Microstrip Antennas for mmW Mobile Applications
Published 2021-01-01“…Moreover, for specific absorption rate (SAR) estimation, a three-layer human head model (skin, skull, and brain) is placed next to the antennas as the exposure source. The simulation results show the performance of the proposed antennas for low-SAR, which make them good candidates for safe usage concerning the negative impact of millimeter waves (mmWs) on human health. …”
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1648
Healthcare Decision-Making in a Crisis: A Qualitative Systemic Review Protocol
Published 2024-01-01“…The COVID-19 pandemic is a recent example, with public leaders responding to and formulating strategies to attenuate the relentless waves of transmission and surges in resource demands. …”
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1649
The Forces Driving Streaming in the Presence of Scatterers Mimicking the Blood Cells and the Contrast Agents
Published 2019-11-01“…Acoustical Driving Forces (ADF), induced by propagating waves in a homogeneous and inhomogeneous lossy fluid (suspension), are determined and compared depending on the concentration of suspended particles. …”
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1650
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A novel aerodynamic drag-reduction mechanism using dolphin-inspired ultrasonic microvibrations
Published 2025-04-01“…Abstract Aerodynamic drag, particularly viscous drag, is a significant source of energy loss in aircraft, with its reduction being critical for improving overall aerodynamic performance. …”
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1652
Temporal Fusion Transformer-Based Trading Strategy for Multi-Crypto Assets Using On-Chain and Technical Indicators
Published 2025-06-01“…To address these complexities, this study introduces a Temporal Fusion Transformer (TFT)-based forecasting framework that integrates on-chain and technical indicators to improve predictive performance and inform tactical trading decisions. By combining multi-source features—such as Spent Output Profit Ratio (SOPR), Total Value Locked (TVL), active addresses (AA), exchange net flow (ENF), Realized Cap HODL Waves, and the Crypto Fear and Greed Index—with classical signals like Relative Strength Index (RSI) and moving average convergence divergence (MACD), the model captures behavioral patterns, investor sentiment, and price dynamics in a unified structure. …”
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1653
Harmonic Cancellation Technique of Four Pole Induction Motor Drive by Using Phase Shifted Carrier Space Vector PWM Technique
Published 2024-02-01“…The voltage source inverter fed induction motor drive produces pulsating torque due to harmonics present in the output voltage of the inverter. …”
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1654
Reflection of Wind Turbine Noise from Rough Ground Using 3D Multiple Scattering Theory
Published 2025-05-01“…Ground roughness is investigated for its influence on the propagation of wind turbine noise by using a proposed multiple scattering theory to predict the reflection of sound waves from a deterministic distribution of hemispheres. …”
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1655
Declining Innovation Performance of the Hungarian Economy: Special Focus on Organizational Innovation. The Example of the European Community Innovation Survey (CIS)
Published 2012-01-01“…The analysis of empirical data of the various waves of the European Community Innovation Survey (CIS) on non-technological innovation shows that the innovation performance of the Hungarian firms is declining. …”
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1656
Dynamic Tensile Properties of Ultra–High–Performance Concrete Under Impact Splitting Tensile Load Based on Digital Image Correlation Technology
Published 2024-11-01“…Based on one-dimensional stress wave theory, the stress, strain, and strain rate of the specimen under dynamic impact splitting tensile load were calculated from the stress wave data collected by strain gauges on the incident and transmission rods. …”
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1657
Noise Was Obviously Reduced by Both Leaf Texture and Surface Roughness in Leaf Scale
Published 2025-04-01“…(1) Woody plant species selection for urban forests is one of the key factors in reducing traffic noise in urban areas, and the ability of sound wave attenuation by leaves is one of the foundations for species selection. …”
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1658
Research on Metal Mesh Coupling Mirrors Utilizing Metasurfaces for Optically Pumped Gas THz Lasers
Published 2025-06-01“…Optically pumped gas terahertz (THz) lasers (OPGTLs) as reliable sources of THz radiation have been extensively utilized within THz application areas. …”
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1659
The Interaction of a Supernova Remnant with Background Interstellar Turbulence
Published 2025-01-01“…The shocks associated with the expanding SNR are sources of galactic cosmic rays, which can reach energies of the PeV order. …”
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1660
Structure and properties forming in ductile iron during isothermal hardening using ultrasound
Published 2020-12-01“…The paper considers the possibility of intensifying isothermal holding processes during quenching of high-strength cast irons by using an external source of physical impact in the form of ultrasonic waves. …”
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