Results 61 to 70 of about 3,192,729 (295)
WAVE PROPAGATION ANALYSIS IN A PRESSURE-WAVE-REFRIGERATOR [PDF]
Modern Physics Letters B, 2005 Pressure wave refrigerators (PWR) refrigerate the gas through periodical expansion waves. Due to its simple structure and robustness, PWR may have many potential applications if the efficiency becomes competitive with existing alternative devices.
W. ZHAO +4 more
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Arthritis Care &Research, EarlyView.Objective The aim of this study was to test the hypothesis that multijoint osteoarthritis would modify the relation between time and frailty progression, in which more affected joints would lead to larger declines over six years compared to those without osteoarthritis using data from the Canadian Longitudinal Study on Aging.
Carson Halliwell +2 more
wiley +1 more source
Magnetopause Waves Controlling the Dynamics of Earth’s Magnetosphere [PDF]
Journal of Astronomy and Space Sciences, 2015 Earth’s magnetopause separating the fast and often turbulent magnetosheath and the relatively stagnant magnetosphere provides various forms of free energy that generate low-frequency surface waves.
Kyoung-Joo Hwang
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Shock Pressure of Breaking Wave
Coastal Engineering 1966, 1966 Shock pressure due to breaking wave was studied experimentally and analytically for the case of two-dimensional regular oscillatory wave. In the first part of this paper, important characteristics of shock pressures were described, which were obtained by using the newly designed pressure gauges of very high frequency responces ( 10 ~ 10000 c/s ).
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, 2019 This paper addresses pressure control in crude oil pipelines in onshore transportation systems. Maintaining pressure below the maximum rated load capacity in a linear section of an oil pipeline is considered as a control problem.
Yuzhanin, Victor, +4 more
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Arthritis Care &Research, EarlyView.Interstitial lung disease (ILD) is a significant cause of morbidity and mortality in patients with inflammatory rheumatic disorders (IRDs). High‐resolution computed tomography (HRCT) is widely considered the gold standard for the noninvasive assessment of ILD; however, its interpretation is constrained by substantial interobserver variability and the ...
Alexander Pfeil +7 more
wiley +1 more source
Wave Impact Pressures on Stepped Revetments [PDF]
Journal of Marine Science and Engineering, 2018 The wave impacts on horizontal and vertical step fronts of stepped revetments is investigated by means of hydraulic model tests conducted with wave spectra in a wave flume. Wave impacts on revetments with relative step heights of 0.3 < Hm0/Sh < 3.5 and a constant slope of 1:2 are analyzed with respect to (1) the probability distribution of the ...
Nils B. Kerpen +2 more
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Arthritis Care &Research, EarlyView.Objective Systemic sclerosis (SSc) is characterized by cardiovascular risk excess not fully explained by traditional factors. Whether the severity of microvascular damage correlates with structural subclinical atherosclerosis remains unclear. We investigated the relationship between nailfold videocapillaroscopy (NVC) abnormalities and carotid ...
Eugenio Capparelli +13 more
wiley +1 more source
Spectral power density of the random excitation for the photoacoustic wave equation
AIP Advances, 2014 The superposition of the Green's function and its time reversal can be extracted from the photoacoustic point sources applying the representation theorems of the convolution and correlation type. It is shown that photoacoustic pressure waves at locations
Hakan Erkol, Mehmet Burcin Unlu
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Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source