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Studia Geotechnica et Mechanica
EN Results of investigations of shearing resistance and compressibility of fine-grained cohesive soil from the southern part of the wielkopolskie voivodeship in relation to the increasing moisture content are presented. The analysis of two series of samples, using soil paste for the consistency index o[...]
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Archives of Acoustics
2015 Vol. 40, No. 2 159--167
EN This study investigates several factors that have not been specified in the standard for dynamic stiffness, compressibility, and long-term deformation; these factors can be used to evaluate the acoustic and physical performances of resilient materials. The study is intended to provide basic data for[...]
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Archives of Acoustics
2015 Vol. 40, No. 4 569--574
EN The paper reports the study of the complexation processes in aqueous solution of α-CD and DMSO. Cyclodextrins (CDs) (sometimes called cycloamyloses) are cyclic oligosaccharides formed by glucose units interconnected by α-(1,4) linkages; α-CD is one of three the most common CDs. It consists of six gl[...]
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Archives of Hydro-Engineering and Environmental Mechanics
EN Coal-mining wastes are used for engineering purposes mainly as a building material for hydraulic and road embankments, as well as land levelling. Determination of compressibility and shear strength parameters is indispensable to determine the usefulness of coal-mining wastes for the above mentioned [...]
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Budownictwo i Inżynieria Środowiska
PL Przydatność popiołu lotnego do budowli ziemnych jest oceniana na podstawie jego właściwości geotechnicznych, między innymi ściśliwości. Na ściśliwość ma wpływ nasycenie gruntu wodą, które można określać za pomocą parametru Skemptona B. W pracy przedstawiono wyniki badań nad ściśliwością zagęszczoneg[...]
EN The usefulness of fly ash for earth structure is determined on the basis of its geotechnical properties, inter alia, the compressibility. The compressibility depend on fly ash water-saturation. The results of compressibility, tested on compacted fly ash, are shown in the paper. Fly ash samples were [...]
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Molecular and Quantum Acoustics
2003 Vol. 24 261-270
EN The excess values of the molar adiabatic compressibility as well as adiabatic compressibility coefficient were estimated for binariy mixtires of 1,2-ethanediol+1-pentanol at 298.15K. Also deviations of the ultrasonic speed from the chosen additivity rules were determined. Both the excess quantities [...]
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Molecular and Quantum Acoustics
2004 Vol. 25 291-296
EN The excess values of the molar adiabatic compressibility as well as adiabatic compressibility coefficeint were estimated for binary mixtures of 1,2-ethanediol+1-pentanol at the temperatures (293.15, 303.15, 308.15 and 313.15) K. Alsko deviations of the ultrasonic speed from the chosen additivity rul[...]
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Molecular and Quantum Acoustics
2002 Vol. 23 463-472
EN The excess values of the molar volume and molar adiabatic compressibility as well as adiabatic compressibility coefficient were estimated for binariey mixtures of cyclohexanol + glycerol at 298.15K. Also deviations of the ultrasonic speed from the chosen additivity rules were determined. Both the ex[...]
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International Journal of Applied Mechanics and Engineering
EN A layer of a compressible, electrically conducting Walters' B' elastico-viscous fluid permeated with suspended particles heated from below in the presence of a magnetic field is considered. For the case of stationary convection, the Walters'(model B') elastico-viscous fluid behaves like a Newtonian [...]
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Systems : journal of transdisciplinary systems science
EN Authors proposed the procedure which allows to calculate compressibility factor of natural gas in a pressure range from 0.1 up to 25.0 MPa and temperatures - from -20 °C up to +50 °C. It provides calculation of compressibility factor by the simplified data about gas structure.
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Physicochemical Problems of Mineral Processing
EN A large amount of fugitive coal dust is generated during the mining, transportation, and processing of coal. The moisture content of the coal dust has a significant influence on the dust collection performance of filters, although relatively few studies on this phenomenon exist. This study deals wit[...]
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Physicochemical Problems of Mineral Processing
EN The work discusses physicochemical phenomena related to interactions between the inhaled particles and the surface of pulmonary fluid which contains the lung surfactant. Dynamic surface phenomena which arise due to periodical variations of the interfacial area during breathing cycle are the extraord[...]
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Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
PL Do wyznaczania płaskich przepływów cieczy lepkiej na nakładających się siatkach w obszarach ograniczonych konturami krzywoliniowymi zastosowano metodę sztucznej ściśliwości. Otrzymany układ równań różniczkowych cząstkowych sprowadzono do układu równań różniczkowych zwyczajnych przy wykorzystaniu met[...]
EN An artificial compressibility method is designed for solving problems of steady incompressible viscous flows on overlapping grids in two-dimensional domains bounded by curvilinear contours. The obtained system of partial differential equations is converted into a system of ordinary differential equa[...]
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Przemysł Chemiczny
2013 T. 92, nr 9 1595-1597
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Modelowanie Inżynierskie
2008 T. 5, nr 36 187-192
PL Celem pracy było poszukiwanie i optymalizacja efektywnych algorytmów obliczeniowych wyznaczania ruchu cieczy lepkiej w obszarach płaskich i przestrzennych - konkurencyjnych do kodów komercyjnych. Wyznaczano ruch cieczy lepkiej metodą sztucznej ściśliwości, opisywaną równaniami w zmiennych fizycznych[...]
EN The introduced pseudo-time derivative of pressure directly couples the pressure with the velocity and changes the mathematical character of the continuity equation from elliptic to hyperbolic. A standard method of lines approach is applied in this contribution. The system of partial differential equ[...]
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Prace Naukowe Politechniki Warszawskiej. Inżynieria Środowiska
2007 z. 54 109-117
PL W referacie przedstawiono wyniki badań edomelrycznych modułów ściśliwości osadów z dekarbonizacji wody. Oznaczenia wykonano dla próbek o różnych wilgotnościach początkowych (w = 27,38-34,20%) i wskaźnikach zagęszczenia (/s = 0,96-1,00) oraz przeprowadzono analizę zależności edometrycznych ściśliwośc[...]
EN In the article there are shown the results of the oedometric tests of compressibility modules of the lime softening sludge. The research have been carried out on the samples at the different initial water contents w=27,38-34,20%) and the degrees of compaction (/s = 0,96-1,00). There has also been st[...]
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Bulletin of the Polish Academy of Sciences. Chemistry
EN The speed of ultrasound in and the density of mixtures of water with ,ß-picoline were measured in the whole concentration range and within the temperature limits 293 = 298 K. The viscosities of those mixtures were measured at 293 K. The molar compressibility, molar volume and the corresponding exces[...]
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International Journal of Applied Mechanics and Engineering
EN The time-dependent, two-dimensional compressible Newtonian flow over the reservoir-die region is solved assuming that slip occurs along the die wall following a nonmonotonic slip law. The combination of compressibility and nonlinear slip leads to self-sustained oscillations of the pressure drop and [...]
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International Journal of Applied Mechanics and Engineering
EN Work is focused on experimental determination of dynamic mechanical properties (i.e. compressibility and relaxation parameters) of the air-water interface during compression in the presence of DPPC monolayer. The surface dynamics was studied with the Langmuir-Wilhelmy balance in several temperatures[...]
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Nukleonika
EN Positron annihilation measurements were performed in aqueous solutions of beta-cyclodextrin, as well as in solid mixtures of this sugar with a long-chained alcohol, n-nonanol. Additionally, acoustic (sound speed, density and compressibility) experiments were done in aqueous beta-cyclodextrin and ter[...]
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