Search results for: MASS REARING

• INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER

  Journals

  ISSN: 0017-9310 , eISSN: 1879-2189

• INTERNATIONAL JOURNAL OF MASS SPECTROMETRY

  Journals

  ISSN: 1387-3806 , eISSN: 1873-2798

• On structural physical approximations and entanglement breaking maps

  Publication

  • R. Agusiak
  • B. Joonwoo
  • Ł. Czekaj
  • L. Maciej

  - JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL - Year 2011

  Very recently, a conjecture saying that the so-called structural physical approximations (SPAs) to optimal positive maps (optimal entanglement witnesses) give entanglement breaking (EB) maps (separable states) has been posed (Korbicz et al 2008 Phys. Rev. A 78 062105). The main purpose of this contribution is to explore this subject. First, we extend the set of entanglement witnesses supporting the conjecture. Then, we ask whether...

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• Creating Acoustic Maps Employing Supercomputing Cluster

  Publication

  • A. Czyżewski
  • J. Kotus
  • M. Szczodrak

  - Archives of Acoustics - Year 2011

  The implemented online urban noise pollution monitoring system is presented with regard to its conceptual assumptions and technical realization. A concept of the noise source parameters dynamic assessment is introduced. The idea of noise modeling, based on noise emission characteristics and emission simulations, was developer and practically utilized in the system. Furthermore, the working system architecture and the data acquisition...

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• Creating and application of maps of concepts for dl ontologies

  Publication

  • K. Goczyła
  • W. Waloszek
  • T. Zawadzka
  • M. Zawadzki

  - Journal of Applied Computer Science - Year 2007

  W poprzednich pracach wprowadzono metodę reprezentacji wiedzy, zwaną Kartografią Wiedzy. Metoda ta pozwala na zapisanie, w formie tzw. map konceptów, zależności pomiędzy konceptami wyróżnionymi w terminologii, a następnie stopniowe (wraz ze wzrostem naszej wiedzy) przypisywanie indywidualnym obiektom tych konceptów. Efektywność budowy map konceptów jest kluczowym czynnikiem wpływającym na możliwość użycia metody. Niniejsza praca...

• Dynamic mass measurement in checkweighers using a discrete time-variant low-pass filter

  Publication

  • P. Pietrzak
  • M. Meller
  • M. Niedźwiecki

  - MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Year 2014

  Conveyor belt type checkweighers are complex mechanical systems consisting of a weighing sensor (strain gauge load cell, electrodynamically compensated load cell), packages (of different shapes, made of different materials) and a transport system (motors, gears, rollers). Disturbances generated by the vibrating parts of such a system are reflected in the signal power spectra in a form of strong spectral peaks, located usually in...

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• Mass Spectrometry

  Journals

  ISSN: 2187-137X , eISSN: 2186-5116

• INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER

  Journals

  ISSN: 0735-1933 , eISSN: 1879-0178

• Journal of College Reading and Learning

  Journals

  ISSN: 1079-0195

• Creating Dynamic Maps of Noise Threat Using PL-Grid Infrastructure

  Publication

  • M. Szczodrak
  • J. Kotus
  • B. Kostek
  • A. Czyżewski

  - Archives of Acoustics - Year 2013

  The paper presents functionality and operation results of a system for creating dynamic maps of acoustic noise employing the PL-Grid infrastructure extended with a distributed sensor network. The work presented provides a demonstration of the services being prepared within the PLGrid Plus project for measuring, modeling and rendering data related to noise level distribution in city agglomerations. Specific computational environments,...

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• Journalism and Mass Communication

  Journals

  ISSN: 2160-6579

• Clinical Mass Spectrometry

  Journals

  eISSN: 2376-9998

• HEAT AND MASS TRANSFER

  Journals

  ISSN: 0947-7411 , eISSN: 1432-1181

• Mass Communication Research

  Journals

  ISSN: 1016-1007

• Mass Spectrometry Letters

  Journals

  ISSN: 2233-4203 , eISSN: 2093-8950

• Mass Communication and Society

  Journals

  ISSN: 1520-5436 , eISSN: 1532-7825

• JOURNAL OF MASS SPECTROMETRY

  Journals

  ISSN: 1076-5174 , eISSN: 1096-9888

• Influence of Bearing Bush Geometry on Properties of Water Lubricated Marine Main Shaft Bearings

  Publication

  • W. Litwin

  - Year 2009

  W pracy przedstawiono wpływ geometrii smarowanego wodą, okrętowego łożyska ślizgowego wału głównego na jego własności hydrodynamiczne.Wykazano, że wielkość luzu łożyskowego, położenie oraz liczba rowków smarnych mają znaczący wpływ na nośnosć łożyska.

• Improvement of Thrust Bearing Calculation Considering the Convectional Heating within the Space between the Pads

  Publication

  • M. Chmielowiec-Jablczyk
  • A. Schubert
  • C. Kraft
  • H. Schwarze
  • M. Wodtke
  • M. Wasilczuk

  - Lubricants - Year 2018

  A modern thrust bearing tool is used to estimate the behavior of tilting pad thrust bearings not only in the oil film between pad and rotating collar, but also in the space between the pads. The oil flow in the space significantly influences the oil film inlet temperature and the heating of pad and collar. For that reason, it is necessary to define an oil mixing model for the space between the pads. In the bearing tool, the solutions...

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• Improvement of the thrust bearing calculation considering the convectional heating within the space between the pads

  Publication

  • M. Chmielowiec-Jabłczyk
  • A. Schubert
  • C. Kraft
  • H. Schwarze
  • M. Wodtke
  • M. Wasilczuk

  - Year 2017

  A modern thrust bearing calculation tool should consider not only the oil film between pad and rotating collar but also the space between the pads. The oil flow in the space has a significant influence on the oil film inlet temperature, the convectional cooling of pad and collar and should be included in the bearing calculation methods. The authors use a tool developed at Clausthal University of Technology in cooperation with the...

• The ring propeller with conical electromagnetic bearings and magneto fluid sealing system.

  Publication

  • L. Matuszewski

  - Year 2004

  W przedstawionej koncepcji nowego zespołu napędowego najbardziej znamiennym rozwiązaniem jest zastosowanie nowoczesnych łożysk elektromagnetycznych dla pędnika śrubowego w prototypowej wersji silnika pierścieniowego synchronicznego z magnesami z ziem rzadkich. W artykule przedstawiono konstrukcję stożkowych łożysk magnetycznych. Technika uszczelniania cieczami magnetycznymi jest nową koncepcją pozwalającą na rozwiązywanie wielu...

• Preparation of mounting mass

  Publication

  • A. Antosik

  - Inżynieria Materiałowa - Year 2017

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• Creating dynamic maps of noise threat using pl-grid infrastructure; materiały konferencyjne

  Publication

  • M. Szczodrak
  • J. Kotus
  • B. Kostek
  • A. Czyżewski

  - Year 2013

  This paper presents functionality and operation results of the system for creating dynamic maps of noise thread with the use of the PL-Grid infrastructure integrated with distributed sensors network for measuring, modeling and rendering noise level distribution. The work presented provides a demonstration of the services being prepared within the PLGrid Plus project. Specific computational environments, so called domain grids,...

• Standing Waves and Acoustic Heating (or Cooling) in Resonators Filled with Chemically Reacting Gas

  Publication

  • A. Perelomova
  • W. Pelc-Garska

  - Archives of Acoustics - Year 2014

  Standing waves and acoustic heating in a one-dimensional resonator filled with chemically reacting gas, is the subject of investigation. The chemical reaction of A ! B type, which takes place in a gas, may be reversible or not. Governing equations for the sound and entropy mode which is generated in the field of sound are derived by use of a special mathematical method. Under some conditions, sound waves propagating in opposite...

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• ANALYSIS OF BEARING CLEARANCE AND WIDTH OF OIL GROOVE ON CHARACTERISTIC OF FLUID FILM IN HYDRODYNAMIC MAIN CRANKSHAFT BEARINGS

  Publication

  • T. Żochowski
  • A. Olszewski

  - TRIBOLOGIA - Year 2018

  Abstract Paper represents analysis of influence of oil groove width and bearing clearance on characteristics of oil film in hydrodynamic journal main crankshaft bearing. Analysis was performed in purpose to define influence of bearing clearance and dimensions of oil groove on static characteristics and manufacturability of half shelf bearings in industrial high-volume production. Computer simulations was made using ARTbear program...

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• Remote learning among students with and without reading difficulties during the initial stages of the COVID-19 pandemic

  Publication

  • J. Zawadka
  • A. Miękisz
  • I. Nowakowska
  • J. Plewko
  • M. Kochańska
  • E. Haman

  - Education and Information Technologies - Year 2021

  This article presents the results of a survey on yet under-researched aspects of remote learning and learning difficulties in higher education during the initial stage (March – June 2020) of the COVID-19 pandemic. A total of 2182 students from University of Warsaw in Poland completed a two-part questionnaire regarding academic achievements in the academic year 2019/2020, living conditions and stress related to learning and pandemic,...

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• The influence of polymer bearing material and lubricating grooves layout on wear of journal bearings lubricated with contaminated water

  Publication

  • W. Litwin
  • M. Wasilczuk
  • M. Wodtke
  • A. Olszewski

  - TRIBOLOGY INTERNATIONAL - Year 2023

  The goal of the present paper is to investigate wear properties of journal sliding bearing operating in the conditions of contaminated water lubrication. Several bearing materials and bearing sleeve designs (differing in the axial grooves position and their shape) were tested experimentally under typical operating conditions in a dedicated test rig, which was equipped with a lubricating system, enabling lubrication with contaminated...

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• An experimental study on polymer mass

  Publication

  • T. Falborski

  - Year 2011

  A new method of repairing damaged structures by filling the cracks with specially prepared polymer mass has been recently proposed. The technique is mainly dedicated to historical objects where minimum intervention is permitted. The flexible joint bonds the disrupted elements and ensures further safe exploitation of a damaged structure. The aim of the present paper is to show the results of an experimental study on polymer mass...

• The Application Of A Noise Mapping Tool Deployed In Grid Infrastructure For Creating Noise Maps Of Urban Areas

  Publication

  • M. Szczodrak
  • J. Kotus
  • A. Czyżewski
  • B. Kostek

  - Computer Science - Year 2013

  The concept and implementation of the system for creating dynamic noise maps in PL-Grid infrastructure are presented. The methodology of dynamic acoustical maps creating is introduced. The concept of noise mapping, based on noise source and propagation models, was developed and employed in the system. The details of incorporation of the system to the PL-Grid infrastructure are presented. The results of simulations performed by...

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• Unsupervised Learning for Biomechanical Data Using Self-organising Maps, an Approach for Temporomandibular Joint Analysis

  Publication

  • M. Troka
  • W. Wojnicz
  • K. Szepietowska
  • I. Lubowiecka

  - Year 2024

  We proposed to apply a specific machine learning technique called Self-Organising Maps (SOM) to identify similarities in the performance of muscles around human temporomandibular joint (TMJ). The performance was assessed by measuring muscle activation with the use of surface electromyography (sEMG). SOM algorithm used in the study was able to find clusters of data in sEMG test results. The SOM analysis was based on processed sEMG...

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• Frontiers in Heat and Mass Transfer

  Journals

  ISSN: 2151-8629

• EUROPEAN JOURNAL OF MASS SPECTROMETRY

  Journals

  ISSN: 1469-0667 , eISSN: 1751-6838

• Journalism and Mass Communication Educator

  Journals

  ISSN: 1077-6958

• Journal of Mass Media Ethics

  Journals

  ISSN: 0890-0523 , eISSN: 1532-7728

• JOURNALISM & MASS COMMUNICATION QUARTERLY

  Journals

  ISSN: 1077-6990 , eISSN: 2161-430X

• An algorithm for preliminary estimating hull structure mass and mass centre height of inland navigation ships

  Publication

  • J. Michalski

  - Year 2005

  Przedstawiono algorytm obliczeniowy służący do wstępnego wyznaczania masy i wysokości środka ciężkości konstrukcji kadłuba statków śródlądowych. Algorytm opracowano opierając się na zaleceniach zawartych w Przepisach Klasyfikacji i Budowy Statków Śródlądowych PRS oraz zastosowano uproszczoną metodę wyznaczania mas usztywnień poszycia kadłuba. Algorytm dotyczy wymiarowania konstrukcji klasycznych statków służących do przewozu drobnicy,...

• Customers Perspective on Mass-customization of Houses

  Publication

  • K. Kwiecinski
  • J. Duarte

  - Year 2019

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• MABS-AUSTIN

  Journals

  ISSN: 1942-0862 , eISSN: 1942-0870

• Journal of Maps

  Journals

  ISSN: 1744-5647

• Extraction of mass spectra free of background and neighboring component contributions from gas chromatography/mass spectrometry data

  Publication

  • R. Dromey
  • M. Stefik
  • T. Rindfleisch
  • A. Duffield
  • M. Kaykhaii

  - ANALYTICAL CHEMISTRY - Year 1976

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• Wojciech Litwin dr hab. inż.

  People

  Zakład Wyposażenia Okrętu, Institute of Ocean Engineering and Ship Technology

  1992÷1996 - study on Mechanical Department at Gdansk University of Technology1996 – employed in the Faculty of Ocean Engineering and Ship Technology at the Gdansk University of Technology2004 – PhD2014 – habilitation2016 - vice dean for science at Faculty of Ocean Engineering2020 - dean of the Faculty of Ocean Engineering2021 - head of Institute of Naval Architecture He participated in a number of designing and research programs...

• Mass Spectrometry-Based Direct Analytical Techniques

  Publication

  • R. Marcinkowska
  • K. Pytel
  • B. Zabiegała

  - Year 2019

  Direct analysis of samples is considered as one of the most environmentally sustainable solutions in analytical chemistry. In the ideal case, such solutions do not require sample preparation and analytes separation steps, therefore do not consumpt harmful substances (or consumpt only minimum amounts of them) and do not generate hazardous waste. Technical solutions for direct analysis also offer miniaturized and field-portable analyzers...

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• Advances in mass spectrometry for iron speciation in plants

  Publication

  • G. AlChoubassi
  • J. Aszyk
  • P. Pisarek
  • K. Bierla
  • L. Ouerdane
  • J. Szpunar
  • R. Łobiński

  - TRAC-TRENDS IN ANALYTICAL CHEMISTRY - Year 2018

  Iron is an important nutrient essential for plants and critical for human health. The state-of-the art of methods for iron speciation in cereal grains and plant fluids is critically reviewed. Particular attention is given to the latest developments in the coupling of HPLC with the parallel ICP MS and electrospray ionization (ESI) MS/MS detection, usually QTOF MS or Q-Orbitrap MS, for the identification and quantification of iron...

• Improvement of radiotracers experiments in mass transfer processes

  Publication

  • L. Petryka
  • V. Mosorov
  • M. Zych
  • R. Hanus
  • J. Sobota
  • M. Jaszczur
  • D. Świsulski

  - EPJ Web of Conferences - Year 2017

  The greatest part of industrial mass transfer is based on continuous transportation of different substances throughout especially constructed installations. In that kind of practice, a flow of such mass in each part determines the process unit and can be described by the residence time distribution (RTD) of the substance inside this unit. This parameter may be evaluated by the properly arranged tracer experiment. It is worthwhile...

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• Loads on walls and inserts in a mass-flow silos

  Publication

  • S. S. De
  • S. Ding
  • M. Jecmenica
  • M. Wójcik

  - TASK Quarterly - Year 2003

  Artykuł przedstawia numeryczną symulację przepływu materiału sypkiego w silosach z uwzględnieniem wkładki silosowej o kształcie podwójnego stożka. Pokazany został wpływ zamontowanej wkładki na rodzaj przepływu oraz na wartość i kształt naporu na ścianę silosu.

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• RAPID COMMUNICATIONS IN MASS SPECTROMETRY

  Journals

  ISSN: 0951-4198 , eISSN: 1097-0231

• WSEAS Transactions on Heat And Mass Transfer

  Journals

  ISSN: 1790-5044

• Journal of Chinese Mass Spectrometry Society

  Journals

  ISSN: 1004-2997

• American Journal of Heat and Mass Transfer

  Journals

  eISSN: 2374-5398

• JP Journal of Heat and Mass Transfer

  Journals

  ISSN: 0973-5763