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Search results for: pressure
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Pressure dependence of the emission in CaF2 : Yb2+
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Taylor type predictor for pressure changes
PublicationCelem pracy jest ocena predykcji ciśnienia za pomocą rozwinięcia funkcji w szereg Taylora. Przewidywana wartość ciśnienia jest obliczana jako iloczyn wcześniejszych wartości mnożonych przez współczynniki wagowe wyznaczone w oparciu o szereg Taylora. Zaletą takiego podejścia jest możliwość analizy danych próbkowanych nierównomiernie. Podstawową wadą jest założenie, że ciśnienie jest dobrze aproksymowane przez wielomian niskiego...
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Transversal Pressure Effect in Circulative Separators
PublicationPrzeanalizowano podobieństwa i różnice między podstawowymi kategoriami separatorów odśrodkowych (wirówki, cyklony, separatory wirowe). Zaproponowano model pola prędkości w separatorze. Wyznaczono rozkład ciśnienia i obliczono siłę dryfu poprzecznego (efekt poprzecznej zmiany ciśnienia). Przeprowadzono pomiary ciśnienia w separatorze laboratoryjnym, uzyskując pozytywną weryfikację przedstawionego modelu.
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Implementation of 24-hour Blood Pressure Control
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Microwave Ring Resonator Based Pressure Sensor
PublicationThis paper demonstrates a microwave pressure sensor, which is based on microstrip line-fed ring resonators. The first ring resonator is loaded with the concentric cylindrical shafts, while the same number of the hollow shanks as the shafts are mounted on the second ring resonator. The arrangement of the cylindrical shaft and hollow shank allows for mechanical movement between two substrates while maintaining electrical contact....
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Selection Pressure in the Evolutionary Path Planning Problem
PublicationThis article compares an impact of using various post-selection methods on the selection pressure and the quality of the solution for the problem of planning the path for a moving object using the evolutionary method. The concept of selection pressure and different methods of post-selection are presented. Article analyses behaviour of post-selection for four options of evolutionary algorithms. Based on the results achieved, waveform...
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Pressure pulsations in turbine blade seal clearance
PublicationThe paper presents the results of numerical and experimental investigations into pressure forces generated in a turbine labyrinth seal. The experiments were performed on a single-stage air model turbine of the impulse type, while the numerical results were obtained by means of CFD Fluent Code. The performed experimental research and numerical calculations prove that in a shroud clearance the pressure pulsates and the effects of...
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Pressure Dependence of Acoustic Modes in AgGaSe 2
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High pressure spectroscopy of chromium doped LiTaO3crystals
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Hydrodynamic Pressure Field of a Ship on Shallow Water
PublicationResults of calculations of the hydrodynamic pressure field around the ship were obtained by application of the boundary element method. Hydrodynamic field was calculated for a Polish Navy’s tugboat and transport ship using a program called SHiPP and compared with measurements of the field taken on river near Swinoujscie for two identical tugs H-4 and H-10. Next, a series of HPF calculations was carried out on planes situated at...
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Modelling of heat transfer in supercritical pressure recuperators
PublicationIn the paper presented is analysis of convective flow heat transfer at supercritical pressure in channels of heat exchanger working in the thermodynamic cycle. The modelling is based on the division of the flow into three regions, namely the heavy fluid, a two phase flow consisting of the heavy and light fluids and finally the light fluid flow. Modelling is concentrated on the region of simultaneous flow of two fluids divided into...
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Hydrodynamic pressure in micro-and nano bearing gap
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Thermal decomposition of acrylic pressure-sensitive adhesives
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Influence of high pressure on Sr2SiO4:Eu2+ luminescence
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Energy levels in CaWO4:Tb3+ at high pressure
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High pressure evolution of YVO4:Pr3+luminescence
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High pressure luminescence spectra of CaMoO4:Pr3+
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Pressure effects on the luminescence properties of CaWO4:Pr3+
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Low-temperature high-pressure cryogelation of nanooxides
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Pressure-Enhanced Environment Effects in Ferrocene Phases
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