Search results for: BLOW KINETICS

• The performance of multicomponent oxide systems based on TiO2, ZrO2 and SiO2 in the photocatalytic degradation of Rhodamine B: Mechanism and kinetic studies

  Publication

  • K. Siwińska-Ciesielczyk
  • D. Świgoń
  • P. S. Rychtowski
  • D. Moszyński
  • A. Zgoła-Grześkowiak
  • T. Jesionowski

  - Colloids and Surfaces A: Physicochemical and Engineering Aspects - Year 2020

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• FTIR, NMR and kinetic studies of proton transfer reactions from nitro-substituted diarylmethanes to N-bases with guanidine character

  Publication

  • G. Schroeder
  • B. Łȩska
  • A. Jarczewski
  • B. Nowak-Wydra
  • B. Brzezinski
  • B. Leska

  - Journal of Molecular Structure - Year 1995

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• Intensification of catechin extraction from the bark of Syzygium cumini using ultrasonication: Optimization, characterization, degradation analysis and kinetic studies

  Publication

  • Y. A. Bhadange
  • V. K. Saharan
  • S. H. Sonawane
  • G. Boczkaj

  - CHEMICAL ENGINEERING AND PROCESSING - Year 2022

  Catechin is a prominent polyphenolic component that possesses various medicinal properties. Present work communicates the intensification and optimization of catechin extraction from the bark of Syzygium cumini tree using stirred reactor, soxhlet, ultrasonic bath, and ultrasonic horn technique. The optimization of several parameters such as type of solvent, solid to solvent ratio (1:100 w/v), speed of agitation (300 RPM), extraction...

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• Tetracycline degradation for wastewater treatment based on ozone nanobubbles advanced oxidation processes (AOPs) – Focus on nanobubbles formation, degradation kinetics, mechanism and effects of water composition

  Publication

  • P. Koundle
  • N. Nirmalkar
  • M. Momotko
  • S. Makowiec
  • G. Boczkaj

  - CHEMICAL ENGINEERING JOURNAL - Year 2024

  Presence of pharmaceuticals, especially antibiotics, in industrial and domestic effluents causes serious damage to the environment. Classic wastewater treatment processes, in particular conventional biological treatment methods, are not sufficient to rapidly eliminate antibiotics. Typically, Advanced Oxidation Processes (AOPs) based on activation of hydrogen peroxide, ozone or persulfate for formation of particular type of radical...

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• AMERICAN JOURNAL OF MEDICAL GENETICS PART C-SEMINARS IN MEDICAL GENETICS

  Journals

  ISSN: 1552-4868 , eISSN: 1552-4876

• International Journal of Low-Carbon Technologies

  Journals

  ISSN: 1748-1317 , eISSN: 1748-1325

• Journal of Low Power Electronics and Applications

  Journals

  eISSN: 2079-9268

• Effect of asymmetric fluid flow distribution on flow boiling in a microchannel heat sink – An experimental investigation

  Publication

  • K. Ritunesh
  • G. Singh
  • D. Mikielewicz

  - APPLIED THERMAL ENGINEERING - Year 2022

  Flow boiling in microchannels is emerging as an exclusive cooling solution for miniaturized high-power electronic devices alongside having other high heat flux applications. Size miniaturization at microscale strangely increases heat transfer performance as well as flow boiling instabilities. Many flow boiling instabilities are interrelated and result from imperfect hydrodynamic conditions. One of such problems is flow maldistribution among...

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• Comparitive study of heat transfer and pressure drop during flow boiling and flow condensation in minichannels

  Publication

  • D. Mikielewicz
  • R. Andrzejczyk
  • B. Jakubowska
  • J. Mikielewicz

  - Archives of Thermodynamics - Year 2014

  In the paper a method developed earlier by authors is applied to calculations of pressure drop and heat transfer coefficient for flow boiling and also flow condensation for some recent data collected from literature for such fluids as R404a, R600a, R290, R32,R134a, R1234yf and other. The modification of interface shear stresses between flow boiling and flow condensation in annular flow structure are considered through incorporation...

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• EHD Flow Measured by 2D PIV in a Narrow Electrostatic Precipitator with Longitudinally-to-flow Wire Electrode

  Publication

  • A. Niewulis
  • J. Podliński
  • J. Mizeraczyk

  - Year 2011

  In this paper, results of the electrohydrodynamic (EHD) flow patterns in two narrow ESPs with longitudinally-to-flow wire electrode are presented. The influence of the ESP geometry on the EHD flow generated in the ESP was investigated. The results obtained from 2 dimensional (2D) Particle Image Velocimetry (PIV) showed similarities and differences of the particle flow in the wire-plate and wire-cylinder type ESP.

• Channel Blockage and Flow Maldistribution during Unsteady Flow in a Model Microchannel Plate heat Exchanger

  Publication

  • P. Dąbrowski
  • M. Klugmann
  • D. Mikielewicz

  - Journal of Applied Fluid Mechanics - Year 2019

  This paper describes the problem of channel blockage as a result of flow maldistribution between the channels of a model mini channel plate heat exchanger consisting of one pass on each leg. Each leg of the heat exchanger contains 51 parallel and rectangular minichannels of four hydraulic diameters namely 461 μm, 571 μm, 750 μm and 823 μm. In addition, a more complex geometry has been investigated where for the sake of breaking...

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• Calculation method for flow boiling and flow condensation of R134a and R1234yf in conventional and small diameter channels

  Publication

  • D. Mikielewicz
  • B. Jakubowska

  - Polish Maritime Research - Year 2017

  The paper presents the results of calculations performed using the authors’ model to predict the heat transfer coefficient during flow boiling for two refrigerants R134a and R1234yf. The experimental data from various past studies have been collected and the calculations have been conducted for the full range of quality variation and a wide range of mass velocity. The aim of the study was to test the sensitivity of the in-house...

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• EXPERIMENTAL VERIFICATION OF THE METHOD OF FLOW BOILING AND FLOW CONDENSATION HEAT TRANSFER PREDICTION FOR SELECTED FLUIDS

  Publication

  • D. Mikielewicz
  • B. Jakubowska

  - Year 2017

  In the paper presented are the results of calculations using authors own model to predict heat transfer coefficient during flow boiling of different refrigerants. The experimental data from various research studies from literature were collected. Calculations were conducted for a full range of quality variation and a wide range of mass velocity. The aim of the study was to test the sensitivity of the in- house developed model....

• CURRENT OPINION IN GENETICS & DEVELOPMENT

  Journals

  ISSN: 0959-437X , eISSN: 1879-0380

• Balkan Journal of Medical Genetics

  Journals

  ISSN: 1311-0160

• G3-Genes Genomes Genetics

  Journals

  ISSN: 2160-1836

• EUROPEAN JOURNAL OF HUMAN GENETICS

  Journals

  ISSN: 1018-4813 , eISSN: 1476-5438

• European Journal of Medical Genetics

  Journals

  ISSN: 1769-7212 , eISSN: 1878-0849

• Current Protocols in Human Genetics

  Journals

  ISSN: 1934-8266

• Molecular Genetics & Genomic Medicine

  Journals

  ISSN: 2324-9269

• Chinese Journal of Medical Genetics

  Journals

  ISSN: 1003-9406

• AMERICAN JOURNAL OF HUMAN GENETICS

  Journals

  ISSN: 0002-9297 , eISSN: 1537-6605

• INTERNATIONAL JOURNAL OF HUMAN GENETICS

  Journals

  ISSN: 0972-3757

• Kinematics and Physics of Celestial Bodies

  Journals

  ISSN: 0884-5913 , eISSN: 1934-8401

• Human Genetics and Genomics Advances

  Journals

  ISSN: 2666-2477

• Molecular Genetics Microbiology and Virology

  Journals

  ISSN: 0891-4168 , eISSN: 1934-841X

• JOURNAL OF ASSISTED REPRODUCTION AND GENETICS

  Journals

  ISSN: 1058-0468 , eISSN: 1573-7330

• JOURNAL OF ANIMAL BREEDING AND GENETICS

  Journals

  ISSN: 0931-2668 , eISSN: 1439-0388

• SABRAO Journal of Breeding and Genetics

  Journals

  ISSN: 1029-7073 , eISSN: 2224-8978

• Twin Research and Human Genetics

  Journals

  ISSN: 1832-4274 , eISSN: 1839-2628

• The Effects of the “Sling Shot” Device on Bench Press Performance, Mechanical Properties of Muscle, and Movement Kinematics

  Publication

  • G. Wojdała
  • M. Krzysztofik

  - JOURNAL OF STRENGTH AND CONDITIONING RESEARCH - Year 2023

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• HUMAN GENETICS

  Journals

  ISSN: 0340-6717 , eISSN: 1432-1203

• Kinetic and equilibrium studies of the proton and deuteron transfer reaction between bis(2,4-dinitrophenyl)methane and strong nitrogen bases in acetonitrile

  Publication

  • B. Brzeziński
  • A. Jarczewski
  • B. Łęska
  • G. Schroeder
  • B. Leska

  - Journal of Molecular Structure - Year 1993

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• Simultaneous determination of thermodynamic and kinetic parameters of aminopolycarbonate complexes of cobalt(II) and nickel(II) based on isothermal titration calorimetry data

  Publication

  • A. Tesmar
  • D. Wyrzykowski
  • E. Muñoz
  • B. Pilarski
  • J. Pranczk
  • D. Jacewicz
  • L. Chmurzyński

  - JOURNAL OF MOLECULAR RECOGNITION - Year 2017

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• Jan Domaradzki dr hab.

  People

  Dr Jan Domaradzki is an assistant professor of sociology and Head of the Laboratory of Health Sociology and Social Pathology at the Department of Social Sciences and Humanities, Poznan University of Medical Sciences, Poznań, Poland. He is a sociologist with an interest in medical sociology; sociology of genetics; social implications of a new genetics, medicalization and geneticization, social representations of biotechnology, social...

• Interaction Between Storm Water Conduit Flow and Overland Flow for Numerical Modelling of Urban Area Inundation

  Publication

  • J. Hakiel
  • M. Szydłowski

  - Year 2016

  Nowadays we can observe increasing frequency of inundations in cities. This makes accurate predicting of inundations more important than ever. Numerical modeling of this issue requires complex approach with simultaneous calculations of pipe flow and surface flow. In this paper, after a short review of known methods used for solving pipe and surface flow, we will try to answer the question if presented methods would be sufficiently...

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• Experimental validation of pressure drop models during flow boiling of R134a – effect of flow acceleration and entrainment

  Publication

  • T. Muszyński
  • R. Andrzejczyk
  • C. A. Dorao

  - MATEC Web of Conferences - Year 2018

  A crucial step to assure proficient work of power and process apparatus is their proper design. A wide array of those devices operates within boiling or condensation of the working fluid to benefit from high heat transfer rates. Two-phase flows are associated with high heat transfer coefficients because of the latent heat of evaporation and high turbulence level between the liquid and the solid surface. Predicting heat transfer...

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• Critical evaluation of recent achievements in low power glow discharge generated at atmospheric pressure between a flowing liquid cathode and a metallic anode for element analysis by optical emission spectrometry

  Publication

  • P. Pohl
  • P. Jamroz
  • K. Swiderski
  • A. Dzimitrowicz
  • A. Lesniewicz

  - TRAC-TRENDS IN ANALYTICAL CHEMISTRY - Year 2017

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• Isotropic damage in viscoplastic flow conditions

  Publication

  • Ł. Pyrzowski

  - Year 2007

  Mechanika zniszczenia jest obecnie jedną z ważniejszych gałęzi mechaniki ciał stałych. Jest cały czas rozwijającą się dziedziną nauki, która znalazła swoje zastosowania w problemach inżynierskich. W artykule zaprezentowano podstawowe informacje na temat lepkoplastyczności i jej zastosowania, koncepcję mechanicznej reprezentacji zniszczenia przez zmienną D, koncepcję naprężeń efektywnych, równania opisujące zniszczenie oraz lepkoplastyczny...

• Practical aspects of Flow Thinning optimization

  Publication

  • M. Pioro
  • I. Kalesnikau
  • M. Poss
  • D. Nace
  • A. Tomaszewski

  - Year 2018

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• Complexity of a classical flow restoration problem

  Publication

  • D. Nace
  • M. Pióro
  • A. Tomaszewski
  • M. Żotkiewicz

  - NETWORKS - Year 2013

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• QoS Extensions for Flow-Awareness Networks

  Publication

  • S. Kaczmarek
  • M. Wolff

  - International Journal of Electronics and Telecommunications - Year 2022

  The paper contains a description and research results of the proposal for distributed QoS extensions for Flow-Based Networking. These QoS extensions let the network accept or reject flows based on current network load and QoS promises for each of the flows. Proposed solution consists of two distributed components, each of them performing in every node, measurement system and access control. The solution could be applied in any...

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• Modelling of dryout process in an annular flow

  Publication

  • D. Mikielewicz
  • J. Mikielewicz
  • J. Wajs
  • M. Gliński

  - HEAT TRANSFER RESEARCH - Year 2008

  W pracy pokazano teoretyczny model kryzysu wrzenia przy wysokich stopniach suchości, który jest modyfikacją modelu proponowanego wcześniej przez Sedlera i Mikielewicza. Model wysychania filmu cieczowego w przepływie pierścieniowym składa się z różniczkowych równań bilansu masy zapisanych dla filmu na ściance i kropel w rdzeniu przepływu. Rozwiązanie układu równań wymaga znajomości gęstości strumienia masy kropel wytrącających się...

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• MODELLING OF TRANSIENT FLOW IN STORM SEWERS

  Publication

  • M. Szydłowski

  - Year 2013

  The paper focuses on the assessment of second-order explicit numerical scheme for unsteady flows in sewers. In order to simulate the pressurized flow the 'Preissmann slot' concept is implemented. For simulation of the transcritical flow the original and improved McCormack scheme is used. The calculated results are compared with numerical solutions and laboratory measurements published in the technical literature. Moreover, the...

• Dryout in annular flow - theoretical analysis

  Publication

  • D. Mikielewicz
  • J. Wajs
  • M. Gliński
  • A. R. Zrooga

  - Archives of Thermodynamics - Year 2009

  W pracy zaprezentowano model kryzysu wrzenia w przepływie pierścieniowym, obowiązujący dla wysokich wartości stopnia suchości i stanowiący modyfikację wcześniejszej wersji modelu zaproponowanego przez Sedlera i Mikielewicza. Model ten uwzględnia bilans masy w filmie cieczowym i bilans masy dla kropel cieczy w rdzeniu przepływu oraz zawiera dodatkowy człon odpowiedzialny za odparowanie filmu na ściance kanału. Rozwiązanie układu...

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• Control design for slow speed positioning

  Publication

  • A. Witkowska

  - Year 2013

  The problem under study is a synthesis of position and heading control system for low frequency model of surface vessel described by 3 DOF mathematical model. The recursive vectorial backstepping control design was used to keep fixed position and heading in presence of wave disturbances. The controller has been simulated on computer model of scaled supply vessel. It has been assumed that the actuators produce generalized forces...

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• Outlet Flow Velocity In Circular Culvert

  Publication

  • W. Szpakowski

  - Archives of Hydro-Engineering and Environmental Mechanics - Year 2014

  The outlet flow velocity in the end section of the culvert barrel depends in most cases on the culvert geometry, including the barrel slope, as well as on upstream and downstream channel parameters. Flowing water can create pressure flow or free surface flow in the culvert barrel. In the case of an unsubmerged barrel outlet, the free-surface flow is more frequent than the full flow. Increased velocities can cause channel bed scour...

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• On a comparison principle and the uniqueness of spectral flow

  Publication

  • M. Starostka
  • N. Waterstraat

  - MATHEMATISCHE NACHRICHTEN - Year 2022

  The spectral flow is a well-known quantity in spectral theory that measures the variation of spectra about 0 along paths of selfadjoint Fredholm operators. The aim of this work is twofold. Firstly, we consider homotopy invariance properties of the spectral flow and establish a simple formula which comprises its classical homotopy invariance and yields a comparison theorem for the spectral flow under compact perturbations. We apply...

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• Flow Process Models for Pipeline Diagnosis

  Publication

  • Z. Kowalczuk
  • M. S. Tatara

  - Year 2021

  This chapter examines the problem of modeling and parameterization of the transmission pipeline flow process. First, the base model for discrete time is presented, which is a reference for other developed models. Then, the diagonal approximation (AMDA) method is proposed, in which the tridiagonal sub-matrices of the recombination matrix are approximated by their diagonal counterparts, which allows for a simple determination of...

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• The Maslov index and the spectral flow—revisited

  Publication

  • M. Izydorek
  • J. Janczewska
  • N. Waterstraat

  - Fixed Point Theory and Applications - Year 2019

  We give an elementary proof of a celebrated theorem of Cappell, Lee and Miller which relates the Maslov index of a pair of paths of Lagrangian subspaces to the spectral flow of an associated path of self-adjoint first-order operators. We particularly pay attention to the continuity of the latter path of operators, where we consider the gap-metric on the set of all closed operators on a Hilbert space. Finally, we obtain from Cappell,...

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