Wyniki wyszukiwania dla: ACTUAL WORKING VOLUME

• Determination of the theoretical and actual working volume of a hydraulic motor

  Publikacja

  • P. Śliwiński

  - ENERGIES - Rok 2020

  A new methodology of determination of the theoretical and actual working volume of a hydraulic motor based on the characteristics of the delivered flow rate into hydraulic motor vs. the rotational speed at a constant pressure drop in the working chambers is described in this paper. A new method of describing the delivered flow rate into a motor per one shaft revolution as a nonlinear function of the pressure drop in the motor working...

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• Determination of the Theoretical and Actual Working Volume of a Hydraulic Motor—Part II (The Method Based on the Characteristics of Effective Absorbency of the Motor)

  Publikacja

  • P. Śliwiński

  - ENERGIES - Rok 2021

  : In this article, the second method of determination of the theoretical and actual working volume of a hydraulic motor is described. The proposed new method is based on the characteristics of effective absorbency of the motor. The effective absorbency has been defined as the ratio of flow rate in a motor to the rotational speed of the motor’s shaft. It has been shown that the effective absorbency is a nonlinear function of the...

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• The influence of pressure drop on the working volume of a hydraulic motor

  Publikacja

  • P. Śliwiński

  - Eksploatacja i Niezawodność - Maintenance and Reliability - Rok 2022

  Reliability and maintenance analysis of hydraulic positive machines basicly focused on the processes of their wear and failure. But in order to correctly assess the mechanical and volumetric efficiency of a hydraulic motor, both at the stage of development research or at the stage of control tests during its exploitation, the working volume of this motor must be correctly determined. Therefore this paper proposes a new method of...

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• Geometric working volume of a satellite positive displacement machine

  Publikacja

  • P. Śliwiński

  - Scientific Reports - Rok 2024

  This article describes a method for determining the geometric working volume of satellite positive displacement machines (pump and motor). The working mechanism of these machines is satellite mechanism consisting of two non-circular gears (rotor and curvature) and circular gears (satellites). Two variants of the satellite mechanism are presented. In the first mechanism, the rolling line of the rotor is a sinusoid "wrapped" around...

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• Volume efficiency loss in axial pumps caused by working fluid compressibility.

  Publikacja

  • L. Osiecki

  - Hydraulika a pneumatika - Rok 2002

  Przedstawiono teoretyczną analizę wpływu ściśliwości cieczy roboczej konstrukcji mechanizmu rozrządu pompy wielotłoczkowej osiowej na straty energetyczne w przestrzeni martwej. Podano wyniki uzyskane dla typowych konstrukcji.

• Actual problems of dyslipidaemia treatment in Poland — 2nd Declaration of Sopot. Experts’ Group Consensus endorsed by the Polish Cardiac Society Working Group on Cardiovascular Pharmacotherapy

  Publikacja

  • B. Wożakowska-Kapłon
  • K. Filipiak
  • A. Mamcarz
  • M. Barylski
  • B. Cybulska
  • R. Dąbrowski
  • J. Drożdż
  • D. Dudek
  • G. Dzida
  • E. Franek... i 15 innych

  - Kardiologia Polska - Rok 2014

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• The Methodology for Determining the Theoretical Based on the Characteristics of Effective Absorbency Versus Pressure Drop in the Motor

  Publikacja

  • P. Śliwiński

  - Rok 2023

  This article describes a method for determining the theoretical and actual working volume of a hydraulic motor. It has been shown that the actual working volume of the motor is the sum of the theoretical working volume and the additional volume that depends on the pressure drop in the working chambers of the motor. It was also shown that the volumetric losses in the hydraulic motor are not only a function of the pressure drop in...

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• A new model of fuel spray shape at early stage of injection in a marine Diesel engine

  Publikacja

  • J. Grochowalska
  • P. Jaworski
  • Ł. J. Kapusta
  • J. Kowalski

  - INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW - Rok 2022

  In the cylinders of a marine diesel engine, self-ignition occurs in very shortly time after the fuel injection into the combustion chamber. Therefore, the paper present was to develop a model of diesel fuel spray for the early stage of fuel spray for in marine diesel engine. There were taken into consideration the main aspects technical such as nozzle diameter of marine engine injector and backpressure in combustion chamber. In...

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• Consequences of russia’s military invasion of Ukraine for Polish-Ukrainian trade relations

  Publikacja

  • O. Melnychenko
  • T. Osadcha
  • A. Kovalyov
  • V. Matskul

  - Journal of International Studies - Rok 2022

  An accurate forecast of interstate trade volume allows for short-term and long-term planning, particularly deciding on state budget revenues, foreign exchange earnings, border arrangement, other infrastructure, migration and social policies. Hostilities are destructive so the russian military aggression against Ukraine in 2022 needs to be assessed in terms of its effects on key economic aspects of Polish-Ukrainian relations, as...

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• The electrical properties mesurements of SOFC with Ce0.8Co0.15Cu0.05O2-s functional layer

  Dane Badawcze

  open access

  • B. Bochentyn
  • P. Błaszczak

  The dataset includes the electrical properties mesurements of SOFC with Ce0.8Co0.15Cu0.05O2-s layer. Samples were produced using aqueous soft chemistry methods (microemulsion method) and applied in form of a layer onto the anode of the commercial SOFC. The SOFC was working under biogas feeding at 750oC. The layers were sintered at 1100oC. 

• The electrical properties mesurements of SOFC with Ce0.9Co0.1O2-s functional layer

  Dane Badawcze

  open access

  • B. Bochentyn
  • P. Błaszczak

  The dataset includes the electrical properties mesurements of SOFC with Ce0.9Co0.1O2-s layer. Samples were produced using aqueous soft chemistry methods (microemulsion method) and applied in form of a layer onto the anode of the commercial SOFC. The SOFC was working under biogas feeding at 750oC. The layers were sintered at 1100oC. 

• The electrical properties mesurements of SOFC with Ce0.8Co0.1Cu0.1O2-s functional layer

  Dane Badawcze

  open access

  • B. Bochentyn
  • P. Błaszczak

  The dataset includes the electrical properties mesurements of SOFC with Ce0.8Co0.1Cu0.1O2-s layer. Samples were produced using aqueous soft chemistry methods (microemulsion method) and applied in form of a layer onto the anode of the commercial SOFC. The SOFC was working under biogas feeding at 750oC. The layers were sintered at 1100oC. 

• The electrical properties mesurements of SOFC with Ce0.9Cu0.1O2-s functional layer

  Dane Badawcze

  open access

  • B. Bochentyn
  • P. Błaszczak

  The dataset includes the electrical properties mesurements of SOFC with Ce0.9Cu0.1O2-s layer. Samples were produced using aqueous soft chemistry methods (microemulsion method) and applied in form of a layer onto the anode of the commercial SOFC. The SOFC was working under biogas feeding at 750oC. The layers were sintered at 1100oC. 

• Rating mathematical models for first-pass of tracer in pCT lung studies

  Publikacja

  • M. Browarczyk
  • S. Lipiński

  - Rok 2014

  This paper presents a comparison of model based on the Gauss function and the most commonly used Gamma-variate model in perfusion computed tomography (pCT) lung studies. It also verifies whether used model affects value of blood volume parameter. Three mean concentration-time curves were created from actual pCT measurements: arterial input function, blood vessels in lungs and lung parenchyma. On the basis of these mean curves we...

• Thermodynamic interpretation and prediction of CO2 solubility in imidazolium ionic liquids based on regular solution theory

  Publikacja

  • B. Dębski
  • A. Hänel
  • R. Aranowski
  • S. Stolte
  • M. Markiewicz
  • T. Veltzke
  • I. Cichowska-Kopczyńska

  - JOURNAL OF MOLECULAR LIQUIDS - Rok 2019

  Regular solution theory (RST) is the most popular model for the interpretation of the interaction between CO2 and ionic liquids. In the present work, the parameters of this model were determined for the CO2 absorption in eleven imidazolium ionic liquids. The y-intercept (A) of the RST model for the investigated imidazolium liquids increases with increasing temperature whereas the slope (B) remains constant. The values of RST parameters...

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• The electrochemical response to BDD electrode functionalization with CD147 receptor

  Dane Badawcze

  open access

  • M. Brodowski
  • M. Kowalski
  • J. Ryl
  • R. Bogdanowicz

  This dataset contains the results of the electrochemical impedance spectroscopy (EIS) measurements of the boron-doped diamond (BDD) electrode functionalization with CD147 receptor. The functionalized electrode was then used for the electrochemical detection of the SARS-CoV-2 virus S1 protein. 

• The electrochemical response to BDD electrode functionalization with IgG2B receptor

  Dane Badawcze

  open access

  • M. Brodowski
  • M. Kowalski
  • J. Ryl
  • R. Bogdanowicz

  This dataset contains the results of the electrochemical impedance spectroscopy (EIS) measurements of the boron-doped diamond (BDD) electrode functionalization with IgG2B receptor. The functionalized electrode was then used for the electrochemical detection of the SARS-CoV-2 virus S1 protein. 

• The electrochemical response to BDD electrode functionalization with ACE2 receptor

  Dane Badawcze

  open access

  • M. Brodowski
  • M. Kowalski
  • J. Ryl
  • R. Bogdanowicz

  This dataset contains the results of the electrochemical impedance spectroscopy (EIS) measurements of the boron-doped diamond (BDD) electrode functionalization with ACE2 receptor. The functionalized electrode was then used for the electrochemical detection of the SARS-CoV-2 virus S1 protein. 

• Proposal of New Tracer Concentration Model in Lung PCT Study Comparison with Commonly Used Gamma-variate Model

  Publikacja

  • M. Browarczyk
  • R. Kalicka
  • S. Lipiński

  - Rok 2017

  Perfusion computed tomography (pCT) is one of the methods that enable non-invasive imaging of the hemodynamics of organs and tissues. On the basis of pCT measurements, perfusion parameters such as blood flow (BF), blood volume (BV), mean transit time (MTT) and permeability surface (PS) are calculated and then used for quantitative evaluation of the tissue condition. To calculate perfusion parameters it is necessary to approximate...

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• Assessing unsignalised pedestrian crossings

  Publikacja

  • M. Budzyński
  • P. Tomczuk
  • T. Mackun

  - Rok 2018

  The lack of pedestrian safety on crossings is a complex problem and one that is influenced by a number of factors such as the law, road traffic culture, the road and traffic. This paper will focus on the last two by presenting a method for assessing pedestrian crossings for their geometry and roadside using data from 930 pedestrian crossings in Warsaw. The authors of this paper have attempted to systematise the process of assessment...

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• Espanol Actual

  Czasopisma

  ISSN: 1135-867X

• Declared and actual students’ physical activity

  Publikacja

  • C. Cholewa
  • M. Witkowski
  • J. Wąsik
  • T. Góra

  - Fiziceskoe vospitanie studentov - Rok 2020

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• Jaroslaw Spychala dr

  Osoby

  Oprócz bardzo dobrego wykształcenia osoba posiada również wieloletnie doświadczenie zawodowe, które jest poświadczeniem tego, że potrafi wykorzystać swoją wiedzę teoretyczną w praktycznych działaniach. Doświadczenie zawodowe jest bardzo bogate i rozbudowane. Ze względu na nabyte całkiem nowe umiejętności zwiększa się atrakcyjność doświadczonego pracownika. Są to między innymi kreatywne myślenie, zorientowanie na cel, odporność...

• The potential and actual biomass resources in authority of Wejherowo

  Publikacja

  • W. Lewandowski
  • O. Korczagin

  - Rok 2003

  Przedstawiono charakterystykę biomasy pod kątem jej potencjalnego energetycznego wykorzystania jako proekologiczne źródło energii odnawialnej. Rozważania przeprowadzono na konkretnym przykładzie, typowego dla Polski Północnej powiatu Wejherowskiego. Analizę danych, uzyskane wyniki i wnioski końcowe można z powodzeniem odnieść i wykorzystać do rozwiązania problemów energetycznych w dowolnym rolniczym powiecie, gminie lub małym mieście.

• Analysis and Evaluation of the Working Cycle of the Diesel Engine

  Publikacja

  • J. Rudnicki

  - Journal of Polish CIMEEAC - Rok 2011

  The paper presents a proposal to apply a quantitative evaluation of the diesel engine with regard to the phenomena occurring during of a working cycle. The proposed procedure when analyzing test results from diesel engine is an attempt to transfer an engine activity evaluation methods in the operational time scale (exploit time), eg. in hours, to the micro-scale (dynamic time) relating only to the execution time of one (several)...

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• Actual and reference evapotranspiration for a natural, temperate zone fen wetland – Upper Biebrza case study

  Publikacja

  • M. Kleniewska
  • T. E. Berezowski
  • D. Mitrowska
  • S. Szporak-Wasilewska
  • W. Ciezkowski

  - Journal of Water and Land Development - Rok 2024

  Evapotranspiration is the key and predominant component of the water balance in wetlands. Direct evapotranspiration measurements are challenging in wetlands due to their remoteness and high surface water level. This article describes the actual (ETa and reference evapotranspiration (ET0) from a cultivated wet meadow located in the Biebrza National Park – the largest national park in north-east Poland, Central Europe. The data were...

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• ANALYSIS OF THE PUNCHING FAILURE MECHANISM IN WORKING PLATFORMS

  Publikacja

  • K. Białek

  - Rok 2013

  Paper presents an analysis of the shear failure mechanism which occurs from the punching of a working platform layer in relation to its thickness, grain size arrangement and mechanical properties, taking into consideration the interaction with soft subgrade. The study is based on the observations of performance of natural scale structures (Streefkerk) and the results of model investigations numerically represented with the use...

• Optimization of the System for Determining the Volume of Tissue Needed for Breast Reconstruction

  Publikacja

  • J. Czałpińska
  • A. Janicka
  • J. Rzepkowski
  • M. Kaczmarek
  • T. Kocejko
  • J. Kang-Hyun

  - Rok 2023

  This article presents techniques for reconstructing surfaces and volume calculations using a point cloud generated from 3D imaging. The main objective of this article was to optimize the voxel size for the most accurate representation of the surface of the female breast. We experimented with different methods for determining volume using images from the Intel D435i camera. In addition, we designed application and measurement station...

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• Load-settlement characteristics of piles working in a group

  Publikacja

  • A. Krasiński
  • T. Kusio

  - Rok 2017

  Load-settlement characteristic (Q-s) of an axially loaded pile can be empirically determined from a static pile load test or on the basis of calculations using, e.g. transfer functions or numerical methods (FEM). The transfer functions method usually rely on empirical data, i.e. the function parameters are determined on the basis of numerous pile test results. Thus this method takes into account pile installation technology and...

• Criteria for selection of working fluid in low-temperature ORC

  Publikacja

  • D. Mikielewicz
  • J. Mikielewicz

  - Chemical and Process Engineering : New Frontiers - Rok 2016

  The economics of an ORC system is strictly linked to thermodynamic properties of the working fluid. A bad choice of working fluid could lead to a less efficient and expensive plant/generation unit. Some selection criteria have been put forward by various authors, incorporating thermodynamic properties, provided in literature but these do not have a general character. In the paper a simple analysis has been carried out which resulted...

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• "3D-Breast System for Determining the Volume of Tissue Needed for Breast Reconstruction"

  Publikacja

  • G. Małyszko
  • K. Ostrowska

  - Rok 2023

  This article presents methods for surface reconstruction and volume determination based on the point cloud created by 3D imaging. Such a system would be used to accurately estimate breast volume in patients classified for breast reconstruction surgery at plastic surgery centers. To develop such a system, various methods of determining volume, based on images from the Intel D435i camera, were tested. In addition, an application...

• On the durability of the hydraulic satellite motor working mechanism in overload condition

  Publikacja

  • M. Szkodo
  • A. Stanisławska
  • P. Śliwiński

  - Advances in Materials Science - Rok 2016

  The paper presents the newest construction of the hydraulic satellite pump/motor. In this study, the fracture of the hydraulic satellite motor working mechanism is investigated. Factors influencing the durability of satellite working mechanism have been described. The durability of the hydraulic satellite motor working mechanism at a load, corresponding to a pressure of 15 MPa supplied with refined rapeseed oil is very low. Analyses...

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• Theoretical opportunities and actual limitations of pH gradient HPLC

  Publikacja

  • R. Kaliszan
  • P. Wiczling
  • P. Wiczling

  - ANALYTICAL AND BIOANALYTICAL CHEMISTRY - Rok 2005

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• 3D-Breast System for Determining the Volume of Tissue Needed for Breast Reconstruction

  Publikacja

  • G. Małyszko
  • J. Czałpińska
  • A. Janicka
  • K. Ostrowska
  • M. Kaczmarek

  - Rok 2024

  3D imaging systems can be used to effectively determine breast volumes for surgical applications. This article presents methods for surface reconstruction and volume determination based on the point cloud created by 3D imaging. Such a system would be used to accurately estimate breast volume in patients classified for breast reconstruction surgery at plastic surgery centers. To develop such a system, various methods of determining...

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• Bearing capacity of the working platform with kinematic method

  Publikacja

  • L. Bałachowski
  • K. Białek

  - Studia Geotechnica et Mechanica - Rok 2015

  Bearing capacity of the working platform for heavy tracks was analysed using Distinct Layout Optimization (DLO) method. The platform layer constructed from cohesionless soils is resting on weak cohesive subgrade. Different thickness of the platform, its effective angle of internal friction and undrained shear strength of the soft soil were taken into consideration. Kinematic method permits different failure mechanisms to be analyzed....

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• Theoretical and Actual Feed Per Tooth During Wood Sawing on an Optimizing Cross-Cut Saw

  Publikacja

  • K. Orłowski
  • W. Blacharski
  • D. Chuchała
  • P. Dudek

  - Rok 2020

  The work presents the geometries of circular saw teeth, whose task is to divide the cross-cut of the cutting layer. For efficient machining on a cross-cut saw with high feed speed values (about 1 ms−1) maximal theoretical feeds per tooth are determined. These values were compared with the actual values determined during transverse cutting of pine wood on a special test stands in industrial conditions. In the experiment the rotational...

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• Linguistica Española actual

  Czasopisma

  ISSN: 0210-6345

• A Comparability of Renal Length and Volume Measurements in MRI and Ultrasound in Children

  Publikacja

  • D. Świętoń
  • W. Bernard
  • M. Grzywińska
  • P. Czarniak
  • A. Durawa
  • M. F. Kaszubowski
  • M. Piskunowicz
  • E. Szurowska

  - Frontiers in Pediatrics - Rok 2021

  Introduction: Despite the significant increase in use of magnetic resonance imaging (MRI) in children, there is still a lack of normal reference values of renal size in this method and reference values are being interpolated from the ultrasound (US) studies. The study provides comparative analysis of agreement in renal length and volume measurements between MRI and ultrasound. Materials and Methods: Ninety-three children with a...

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• Working Conditions in Global Value Chains: Evidence for European Employees

  Publikacja

  • D. Nikulin
  • J. Wolszczak-Derlacz
  • A. Parteka

  - Work, Employment and Society - Rok 2022

  This article investigates a sample of almost nine million workers from 24 European countries in 2014 to conclude how involvement in global value chains (GVCs) affects working conditions. We use employer–employee data from the Structure of Earnings Survey merged with industry-level statistics on GVCs based on the World Input-Output Database. Given the multidimensional nature of the dependent variable, we compare estimates of the...

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• Actual problems of the polish coastal landscape, architecture and culturalheritage protection

  Publikacja

  • M. Gawlicki

  - Rok 2003

  Praca zawiera ogólną charakterystykę krajobrazu polskiego wybrzeża, przedstawia podstawowe zagrożenia jako wartości wynikające z nieprzemyślanych decyzji planistycznych oraz żywiołowego rozwoju strefy nadmorskiej, prezentuje także walory środowiska kulturowego wsi położonych nad Bałtykiem, ich architekturę oraz aktualne problemy ich ochrony.

• Working Conditions in the Context of Global Value Chains and Routinisation: An Example of Polish Workers

  Publikacja

  • D. Nikulin
  • J. Wolszczak-Derlacz

  - Gospodarka Narodowa - Rok 2023

  The paper aims to explore the linkages between global production fragmentation, routinisation and the well-being of workers in Poland. In particular, the focus is placed on the selected measures of working conditions, such as the social environment, work intensity, and working time quality to examine their dependence on involvement in international trade and the routinisation level. We merge individual data describing the working...

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• Integrated model for the fast assessment of flood volume: Modelling – management, uncertainty and sensitivity analysis

  Publikacja

  • B. Szeląg
  • P. Kowal
  • A. Kiczko
  • A. Białek
  • G. Wałek
  • D. Majerek
  • P. Siwicki
  • F. Fatone
  • G. Boczkaj

  - JOURNAL OF HYDROLOGY - Rok 2023

  The specific flood volume is an important criterion for assessing the performance of sewage networks. It has been shown that its value is greatly influenced by the layout of the sewers in the catchment area, which is usually expressed by a fractal dimension. Currently, only mechanistic models (such as SWMM) enable the determination of the impact of the layout of the sewers on flooding volume, but they require additional and robust...

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• Testing Question Order Effects of Self-perception of Risk Propensity on Simple Lottery Choices as Measures of the Actual Risk Propensity

  Publikacja

  • J. Golik

  - ASK: RESEARCH & METHODS - Rok 2018

  Uncertainty together with the necessity of making choices inevitably results in risky decisions. For many years now, scientists have been studying notions connected with risk such as risk management, risk perception or risk propensity. While many sophisticated methods regarding measurement of risk propensity have been developed so far, it seems that little attention has been paid to checking whether they are not inherently flawed....

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• Thermodynamic Cycles of Air Microturbine Power Plants Working on Biomass Fuels

  Publikacja

  • K. Kosowski
  • M. Piwowarski
  • R. Stępień
  • W. Włodarski

  - Rok 2012

  The gas turbine engine is modified to work as an air turbine set which consists, in the simplest arrangement, of a compressor, a heat exchanger and a turbine. Air is a working medium for both: the compressor and the turbine. This kind of air turbine set can be applied in power plants working on biomass fuels. In this solution we can burn fuels of varying parameters in the external combustion chamber without any harmful effects...

• The significance of the properties of water for the working cycle of the kinesin molecular motor

  Publikacja

  • A. Kuffel
  • M. Szałachowska

  - JOURNAL OF CHEMICAL PHYSICS - Rok 2018

  Explicit solvent molecular dynamics simulations were performed in this study to investigate and discuss several aspects of the influence of the properties of water on the working cycle of a molecular motor from the kinesin superfamily. The main objects of attention were: the binding of the neck linker and the association of the kinesin and the tubulin. The docking of the neck linker is considered a crucial event during the working...

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• Front Matter: Volume 8703

  Publikacja

  • P. SPIE
  • R. S. Romaniuk

  - Rok 2013

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• Front Matter: Volume 7502

  Publikacja

  • P. SPIE
  • R. S. Romaniuk

  - Rok 2009

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• Front Matter: Volume 8454

  Publikacja

  • P. SPIE
  • R. S. Romaniuk

  - Rok 2012

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• Front Matter: Volume 8010

  Publikacja

  • P. SPIE
  • R. S. Romaniuk

  - Rok 2011

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• Front Matter: Volume 8702

  Publikacja

  • P. SPIE
  • R. S. Romaniuk

  - Rok 2013

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