Search results for: RESISTANCE

• Resistance is futile

  Publication

  • S. Taryma

  - Tire Technology International - Year 2005

  Omówiono zasadę działania przyczepy dynamometrycznej służącej do pomiaru oporu toczenia opon do samochodów osobowych i dostawczych w warunkach drogowych. Przyczepa ta została zbudowana w Katedrze Pojazdów i Maszyn Roboczych Politechniki Gdańskiej. Zaprezentowano wyniki dadań oporu toczenia dwóch opon na nawierzchni SMA 0/12,8.

• Accurate rolling resistance Rolling resistance measurements can be influenced by a number of factors

  Publication

  • J. Ejsmont
  • G. Ronowski
  • B. Świeczko-Żurek

  - Tire Technology International - Year 2017

  Tire rolling resistance is one of the most difficult-to-measure parameters of the tire/ pavement interface, especially if road measurements are required. First of all, it is necessary to measure a fairly small force in the system that is heavily loaded by other forces and subjected to many adverse effects causing measurement errors. The second problem is related to the fact that tire rolling resistance depends on many factors,...

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• The role of glucuronidation in drug resistance

  Publication

  • Z. Mazerska
  • A. Mróz
  • M. Pawłowska
  • E. Augustin

  - PHARMACOLOGY & THERAPEUTICS - Year 2016

  The final therapeutic effect of a drug candidate, which is directed to a specific molecular target strongly depends on its absorption, distribution, metabolism and excretion (ADME). The disruption of at least one element of ADME may result in serious drug resistance. In this work we described the role of one element of this resistance: phase II metabolism with UDP-glucuronosyltransferases (UGTs). UGT function is the transformation...

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• Enterococci isolated from plant-derived food - Analysis of antibiotic resistance and the occurrence of resistance genes

  Publication

  • W. Chajęcka-Wierzchowska
  • U. Zarzecka
  • A. Zadernowska

  - LWT-FOOD SCIENCE AND TECHNOLOGY - Year 2021

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• Final report on noise and rolling resistance

  Publication

  • J. Ejsmont
  • P. Mioduszewski
  • G. Ronowski
  • S. Taryma
  • B. Świeczko-Żurek

  - Year 2015

  Work Package 6 deals with environmental impacts of PERS use, including noise and rolling resistance. This report covers preliminary noise tests performed in the laboratory and at the road test sites. The obtained results indicate that PERS material reduce noise considerably - up to 12 dB in comparison to SMA16 reference surface. Noise reduction properties are especially visible in the case of factory produced PERS slabs supplied...

• Methods of Tire Rolling Resistance Measurements

  Publication

  • J. Ejsmont
  • B. Świeczko-Żurek

  - Year 2014

  Tire rolling resistance is one of the factors related to tire/road interaction that has important influence on road vehicles performance. Raising fuel price and increased concern related to the environmental changes result in growing interest in reduction of tire rolling resistance that influences fuel consumption, especially in free-flowing highway traffic with moderate speeds. There are several methods of tire rolling resistance measurements....

• INFLUENCE OF TEMPERATURE ON THE TYRE ROLLING RESISTANCE

  Publication

  • J. Ejsmont
  • S. Taryma
  • G. Ronowski
  • B. Świeczko-Żurek

  - INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY - Year 2018

  Temperature is a very important factor controlling rolling resistance of road vehicle tyres. There are at least three different temperatures that may be considered as important factors controlling thermal conditions of the rolling tyre. The most common measure of the thermal conditions during tyre rolling is ambient air temperature. The other two are: pavement temperature and “tyre” temperature. Tyre temperature is the most difficult...

• The resistance of S235JR steel to cavitation erosion

  Publication

  • A. Krella
  • D. E. Zakrzewska
  • A. Marchewicz

  - WEAR - Year 2020

  The erosion resistance of S235JR steel to flow cavitation was investigated. In order to understand an influence of steel properties and cavitation intensities on the degradation mechanisms, low-carbon S235JR steel was tested in the as-received state and after thermal treatment (annealing) under four different flow velocities. Annealing decreased steel hardness, which made S235JR steel less resistant to cavitation erosion. The performed...

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• Estimation of cavitation erosion resistance of materials

  Publication

  • M. Szkodo

  - Advances in Materials Science - Year 2006

  W pracy przedstawiono ocenę odporności kawitacyjnej 17 materiałów. Do opisu odporności kawitacyjnej zaproponowano nowy wskaźnik liczbowy uwzględniający długość okresu inkubacji, maksymalną prędkość niszczenia oraz czas po którym wystąpi maksymalna prędkość niszczenia materiału. Zaproponowany wskaźnik porównano ze wskaźnikiem δcav, który reprezentuje całą krzywą erozji kawitacyjnej materiału.

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• Rolling resistance measurements of studded tires

  Publication

  • R. Woźniak
  • S. Taryma

  - Year 2006

  W pracy przedstawiono wyniki pomiaru oporu toczenia opon kolcowanych i po usunięciu kolców na nawierzchni poroelastycznej. Badania przeprowadzono na stanowisku bębnowym Katedry Pojazdów i Maszyn Roboczych Politechniki Gdańskiej. Opony kolcowane mają o około 5% wyższy współczynnik oporu toczenia w porównaniu z oponami nie kolcowanymi.

• Difficulties with evaluating resistance of materials to cavitation.

  Publication

  • A. Sitko

  - Year 2008

  W pracy dokonano analizy wyników Międzynarodowego Testu Erozji Kawitacyjnej (ICET), któremu koordynował Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN) w Gdańsku. Kluczowe parametry wpływające na zmianę przebiegu krzywych erozji uzyskanych na stanowiskach badawczych zostały wskazane. Wykazano konieczność przeprowadzenia badań w zakresie oceny wpływu efektu skali. Zaprezentowano wyniki uzyskane na stanowiskach magnetostrykcyjnych...

• Type of surface and tire rolling resistance

  Publication

  • M. Drywa

  - Year 2013

  ...

• Voriconazole and multidrug resistance in Candida albicans

  Publication

  • R. Wakieć
  • R. Prasad
  • J. Morschhauser
  • F. Barchiesi
  • E. Borowski
  • S. Milewski

  - MYCOSES - Year 2007

  Porównano aktywność grzybostatyczną in vitro worikonazolu, flukonazolu, ketokonazolu i klotrimazolu wobec opornych na flukonazol szczepów klinicznych Candida albicans oraz rekombinowanych szczepów Saccharomyces cerevisiae eksprymujących jeden z genów kodujących białka oporności wielolekowej (MDR) C. albicans: Cdr1p. Cdr2p lub CaMdr1p. Stwierdzono, że nadekspresja genów MDR czyni komórki drożdżaków mniej wrażliwymi na działanie...

• Impact of probability distribution on the uncertainty of resistance measurement

  Publication

  • S. Szczesny
  • A. Golijanek-Jędrzejczyk
  • D. Świsulski

  - ITM Web of Conferences - Year 2019

  The paper presents studies on the influence of probability distributions on the expanded uncertainty of the resistance measurement. Choosing the correct probability distribution is very important to estimate of measurement uncertainty. The paper presents the results of analysis of the resistance measurement uncertainty using the technical method of resistance: 100 G. The analysis of the uncertainty...

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• Road texture influence on tyre rolling resistance

  Publication

  • J. Ejsmont
  • G. Ronowski
  • B. Świeczko-Żurek
  • S. Sommer

  - Road Materials and Pavement Design - Year 2017

  Tyre performance, one of the critical factors for vehicle users, is strongly related to theroad surface characteristics, most notably to the pavement texture. Phenomena that occur at the tyre/road interface affect tyre friction (skid resistance), rolling resistance, tyre wear and tyre/road noise. This article deals with relationship between surface texture and rolling resistance of light and heavy vehicle tyres. Mean profile depth...

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• Ship Resistance Prediction with Artificial Neural Networks

  Publication

  • K. Grabowska
  • P. Szczuko

  - Year 2015

  The paper is dedicated to a new method of ship’s resistance prediction using Artificial Neural Network (ANN). In the initial stage selected ships parameters are prepared to be used as a training and validation sets. Next step is to verify several network structures and to determine parameters with the highest influence on the result resistance. Finally, other parameters expected to impact the resistance are proposed. The research utilizes...

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• Engineering method of tire rolling resistance evaluation

  Publication

  • J. Ejsmont
  • W. Owczarzak

  - MEASUREMENT - Year 2019

  Tire rolling resistance is one of the most difficult tire parameters to measure. The reason is that for modern tires the force of rolling resistance corresponds to 0.5–1% of tire load, thus measurements of very small forces must be performed in a heavily loaded system. This constitutes great problems, especially in road conditions. Laboratory measurements are easier to perform, as the environment may be better controlled, but roadwheel...

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• Road texture influence on tire rolling resistance

  Publication

  • S. Taryma
  • J. Ejsmont
  • G. Ronowski
  • B. Świeczko-Żurek
  • P. Mioduszewski
  • M. Drywa
  • R. Woźniak

  - Key Engineering Materials - Year 2014

  Tire rolling resistance is one of the most important resistive forces acting on road vehicles. It depends on tire and surface characteristics as well as vehicle operating parameters. This paper deals with the influence of road surface texture on rolling resistance of passenger car tires. Results of road measurements performed on variety of road surfaces are presented.

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• Elctrochemical oxidation and corrosion resistance of the Ti13Nb13Zr alloy

  Publication

  • A. Ossowska
  • A. Zieliński
  • M. Supernak

  - Engineering of Biomaterials / Inżynieria Biomateriałów - Year 2013

  This paper presents the results of oxidation and corrosion tests carried out on titanium alloy Ti13Nb13Zr. The oxide film was prepared by electrochemical environment 2M H3PO4 for 30 min and 1 h, at a constant voltage 40V. The tests of corrosion resistance were performed by potentiostatic method in Ringer's solution at different pH values: 7, 5 and 3. The change in an appearance of surface and the increase in corrosion resistance...

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• Cavitation Erosion Resistance Influence of Material Properties

  Publication

  • D. E. Zakrzewska
  • A. Krella

  - Advances in Materials Science - Year 2019

  The cavitation erosion is the phenomena that causes degradation of fluid flow machinery components due to repetitive implosion of cavitation bubbles adjacent to the solid surface. Cavitation erosion is a complex phenomenon, which includes not only hydrodynamic factors of liquid, but also properties of erodible material e.g. microstructure, hardness or Young modulus. In order to reduce the negative impact of erosion on machine components,...

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• Antimicrobial resistance of fecal indicators in disinfected wastewater

  Publication

  • A. Łuczkiewicz
  • K. Jankowska
  • R. T. Bray
  • E. Kulbat
  • B. Quant
  • A. Sokołowska
  • K. Olańczuk-Neyman

  - WATER SCIENCE AND TECHNOLOGY - Year 2011

  The main objective of the study was to assess the potential of three systems (UV irradiation, ozonation, and micro/ultrafiltration) operated in a pilot scale in removal of antimicrobial-resistant fecal bacteria from secondary effluent of the local wastewater treatment plant (700,000 population equivalent). The effectiveness of the processes was analysed using the removal ratio of fecal indicators (Escherichia coli and Enterococcus...

• Static puncture resistance of non-woven geotextiles

  Publication

  • A. Bolt
  • A. Duszyńska

  - Year 2010

  Badania cech fizycznych i wytrzymałościowych geowóknin separcyjnych i osłonowych. Analiza wyników badań oporu na przebicie statycze metodą CBR, dla różnych rodzajów geowłóknin, próbek pozyskanych z terenu (po wbudowaniu w nasyp)i kontrolnych.

• The Resistance of Polyethersulfone Membranes on the Alkaline Cleaning Solutions

  Publication

  • M. M. Gryta
  • P. Woźniak

  - Membranes - Year 2024

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• Improvement of the resistance to oxidation of the ecological greases by the additives

  Publication

  • J. Drabik
  • M. Trzos

  - JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY - Year 2013

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• A parametric method for evaluation of resistance of swath ships

  Publication

  • J. Michalski

  - Polish Maritime Research - Year 2008

  Artykuł zawiera sformułowania metody parametrycznej służącej do wyznaczania oporu kadłuba statku o konfiguracji swath. Metodę opracowano opierając się na rezultatach obliczeń numerycznych, uzyskanych metodami strukturalnymi, wywiedzionymi ze sformułowań teoretycznej hydromechaniki okrętu, wykonanych na dostatecznie licznej serii kształtów kadłuba, o systematycznie uzmiennianych parametrach kształtu. Następnie przedstawiono rezultaty...

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• Tire rolling resistance measurements on the road and in the laboratory

  Publication

  • J. Ejsmont
  • S. Taryma
  • G. Ronowski

  - Tire Technology International - Year 2008

  W pracy przedstawiono stanowisko bębnowe do badania oporu toczenia opon samochdowych w warunkach laboratoryjnych. Zaprezentowano także przyczepę dynamometryczną do badania oporu toczenia opon samochodowych w warunkach drogowych. Stanowisko bębnowe i przyczepa zosały zbudowane w Katedrze Pojazdów i Maszyn Roboczych Politechniki Gdańskiej. Omówiono wpływ wzdłużnego pochylenia drogi i naporu powietrza na badane koło na dokładność...

• Examination of the epoxy coating system's resistance to Corrobill

  Publication

  • K. Darowicki
  • S. Krakowiak
  • T. Sonneck

  - Year 2017

  The tests of the influence of the surface cleaning agent on the epoxy coating were carried out. Electrochemical and corrosion tests were carried out. The effect of the preparation on the adhesion and hardness of the tested coating was tested.

• Determination of the transverse resistance characteristics in railway track

  Publication

  • W. Koc
  • A. Wilk
  • P. Chrostowski
  • S. Grulkowski

  - JOURNAL OF TRANSPORTATION ENGINEERING-ASCE - Year 2010

  W pracy przedstawiono problem oporów poprzecznych podsypki z punktu widzenia budowy, utrzymania oraz bezpieczeństwa w eksploatacji toru kolejowego. Zaprezentowano różne sposoby analitycznego podejścia do badanego zjawiska na przykładzie modeli matematycznych spotykanych w literaturze. Scharakteryzowano aktualny stan badań doświadczalnych związanych z oporami poprzecznymi. Omówiono różne sposoby prowadzenia takich badań w eksploatowanych...

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• INFLUENCE OF LOAD AND INFLATION PRESSURE ON THE TYRE ROLLING RESISTANCE

  Publication

  • J. Ejsmont
  • S. Taryma
  • G. Ronowski
  • B. Świeczko-Żurek

  - INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY - Year 2016

  Tyre load and inflation pressure are important factors controlling rolling resistance of road vehicles. The article presents results obtained in the Technical University of Gdańsk during laboratory and road measurements of different car tyres rolling on different pavements. The knowledge of rolling resistance characteristics is important for modelling car dynamics as well as fuel consumption. It is also necessary to establish proper...

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• Tyre rolling resistance and its influence on fuel consumption

  Publication

  • B. Świeczko-Żurek
  • G. Ronowski
  • J. Ejsmont

  - Combustion Engines - Year 2017

  Rolling resistance of tyres is one of the major resistive forces acting on any wheeled vehicle. Unfortunately, it is also one of the forces very difficult to measure. It is estimated that in certain traffic conditions (like for example constant speed driving with slow or moderate speed) so called Rolling Resistance Impact Factor may be as high as 0.3. This means that reduction of rolling resistance by 50% would lead to 15% of energy...

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• Decreasing CO2 Emissions By Reducing Tire Rolling Resistance

  Publication

  • J. Ejsmont
  • B. Świeczko-Żurek

  - Year 2018

  The first motor vehicle was built by Nicolas Cugnot almost 250 years ago and since then there has been a continuous process of motor vehicles’ improvements, as well as development of new road pavements. The fuel crisis of the 70s of the 20th century made it clear to vehicle builders that measures should be taken to reduce vehicle fuel consumption and it contributed to an increased interest in electric vehicles. Although significant...

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• Influence of Road Wetness on Tire-Pavement Rolling Resistance

  Publication

  • J. Ejsmont
  • L. Sjogren
  • B. Świeczko-Żurek
  • G. Ronowski

  - Journal of Civil Engineering and Architecture - Year 2015

  Rolling resistance of tires is one of the most important factors influencing energy consumption of road vehicles, especially on rural roads. For practical reasons, most of rolling resistance measurements are usually performed for dry road conditions. Based on the fact that roads are wet during a considerable time over the year and as part of the projects MIRIAM, ROLRES and ROSANNE, the TUG (Technical University of Gdańsk) in Poland...

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• TEMPERATURE INFLUENCE ON TIRE ROLLING RESISTANCE MEASUREMENTS QUALITY

  Publication

  • J. Ejsmont
  • G. Ronowski
  • W. Owczarzak
  • S. Sommer

  - INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY - Year 2022

  Global warming makes it necessary to reduce energy consumption, which in the case of motor vehicles, is connected, among other things, with reduction of resistive forces acting on a vehicle during its motion. One of the most important components of those forces is rolling resistance, which is very difficult to measure, especially in road conditions. The article deals with issues related to the influence of the thermal state of...

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• Analysis of Rolling Resistance of Tires With Run Flat Insert

  Publication

  • J. Ejsmont
  • J. Jackowski
  • W. Luty
  • G. Motrycz
  • P. Stryjek
  • B. Świeczko-Żurek

  - Key Engineering Materials - Year 2014

  Run flat properties are required for tires intended for special applications like military or rescue vehicles. Run-Flat inserts make possible to drive a car or truck, with certain restrictions, also when inflation pressure is very low or non-existing (after tire damage). Rolling resistance of tires rolling the inserts increases considerably in relation to the rolling resistance of properly inflated tires. This paper presents results...

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• Modernization of the Trailer for Tyre/Road Rolling Resistance Measurements

  Publication

  • R. Woźniak
  • S. Taryma
  • G. Ronowski

  - Key Engineering Materials - Year 2012

  In the article the ways of defining tyre rolling resistance are presented. The advantages of the laboratory tests of tyre/road rolling resistance and the advantages and disadvantages of on the road tyre/road rolling resistance tests are described. The description of the special trailer used for tyre/road rolling resistance measurements designed and constructed in the Faculty of Mechanical Engineering at Gdansk University of Technology,...

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• Shear resistance of low height precast concrete lintels

  Publication

  • A. Ambroziak
  • J. Kondrat
  • M. Wesołowski

  - Archives of Civil Engineering - Year 2020

  The scope of the paper is to investigate analytically and determine experimentally the shear resistance of low height reinforced precast concrete lintels. The chosen procedures included in national and international standards applied for the design of structural concrete elements to an estimation of shear behaviour of reinforced concrete elements are described. The characteristic and designed shear strength of precast concrete...

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• The influence of road surface unevenness on tyre rolling resistance

  Publication

  • J. Ejsmont
  • G. Ronowski
  • S. Taryma
  • B. Świeczko-Żurek

  - The Archives of Automotive Engineering - Archiwum Motoryzacji - Year 2015

  The geometric characteristics of road surface substantially affect the interaction between tyre and road. Depending on pavement texture wavelength, the texture chiefly affects tyre/road friction, rolling resistance, interior and exterior noise, tyre wear, and ride comfort. The article presents results of investigations on the influence of road surface unevenness on the rolling resistance of passenger car and truck tyres. The tests...

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• The impact of material degradation on the resistance and reliability of truss structures

  Publication

  • R. Ptaszek
  • J. Górski
  • K. Winkelmann

  - Year 2016

  The paper analyses limit load-carrying capacity and buckling load of truss towers used to support high voltage power lines. The analysed typical structure was subjected to characteristic loads and their combinations. The results were applied to assess structural resistance with regard to steel corrosion in the long-term operation. The extent of structural deterioration was assessed due to Young's modulus decrement in the course...

• High temperature corrosion resistance of porous hastelloy alloy

  Publication

  • K. Dunst
  • M. Biczyńska
  • J. Karczewski
  • P. Jasiński
  • S. Molin

  - Zeszyty Naukowe Wydziału ETI Politechniki Gdańskiej. Technologie Informacyjne - Year 2012

  To further understand the suitability of Ni-Cr-base alloy for solid oxide fuel cell (SOFC), a commercial Ni-Cr-Fe-Mo alloy, Hastelloy X was selected and evaluated for oxidation behaviour under high temperature conditions. HastelloyX was chosen due to its unusual resistance to oxidizing, reducing and neutral atmospheres. For long term stability of metal supported fuel cell, the corrosion resistance plays a vital role and must be...

• Crack Resistance of Asphalt Concrete Subjected to Environmental Factors

  Publication

  • C. Szydłowski
  • M. Stienss

  - NanoWorld Journal - Year 2023

  The paper presents an analysis of the influence of environmental factors on the cracking susceptibility of asphalt concrete resulting in a change in the durability of asphalt pavement. In order to assess the phenomenon, laboratory tests were carried out taking into account the destructive effects of moisture, freeze-thaw cycle and long-term ageing. The influence of both factors occurring simultaneously was also verified. Due to...

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• Does Tempo of Resistance Exercise Impact Training Volume?

  Publication

  • M. Wilk
  • A. Golas
  • P. Stastny
  • M. Nawrocka
  • M. Krzysztofik
  • A. Zajac
  • M. Krzysztofik

  - Journal of Human Kinetics - Year 2018

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• Penetration resistance of Lubiatowo sand in calibration chamber tests

  Publication

  • L. Bałachowski

  - Archives of Hydro-Engineering and Environmental Mechanics - Year 2006

  Analiza oporu na wciskanie na stożku sondy statycznej wciskanej na podstawie badań modelowych w komorze kalibracyjnej z kontrolą naprężeń bocznych. Przeprowadzono badania z zastosowaniem standardowej końcówki CPT, dylatometru DMT, mini-stożka CPT oraz pali modelowych o różnej średnicy. Badania wykonano na piasku modelowym z plaży w Lubiatowie w stanie średnio zagęszczonym i zagęszczonym w szerokim zakresie składowej pionowej naprężenia....

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• The effect of heat treatment of hardwood on the specific cutting resistance

  Publication

  • K. Orłowski
  • M. Grześkiewicz

  - Annals of Warsaw University of Life Sciences-SGGW Land Reclamation - Year 2009

  W pracy przedstawiono wyniki badań mocy skrawania podczas przecierania modyfikowanego i niemodyfikowanego termicznie drewna dębowego i jesionowego na pilarce ramowej PRW15M. W pierwszym etapie badań, graniakowe próbki drewna dębowego i jesionowego były modyfikowane termicznie za pomocą przegrzanej pary (temperatura 197C, czas 4 h) w parzelni wysokotemperaturowej, w warunkach przemysłowych. Następnie, wyznaczono właściwe powierzchniowe...

• The corrosion resistance of laser surface alloyed stainless steels

  Publication

  • Z. Brytan
  • Z. Brytan

  - Journal of Achievements in Materials and Manufacturing Engineering - Year 2018

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• Silicone pressure-sensitive adhesives with increased thermal resistance

  Publication

  • A. Antosik
  • K. Mozelewska
  • M. Piątek-Hnat
  • Z. Czech
  • M. Bartkowiak

  - JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY - Year 2022

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• The influence of boundary conditions on the resistance and stiffness of rainscreen panels

  Publication

  • P. Lewandowski
  • E. Urbańska-Galewska

  - Year 2011

• High temperature corrosion resistance of porous hastelloy alloy

  Publication

  • K. Dunst
  • M. Karpińska
  • J. Karczewski
  • S. Molin
  • P. Jasiński

  - Year 2012

  W pracy przedstawiono badania korozyjne stopu Hastelloy w wysokich temperaturach.

• Resistance to cold cracking of steel joints of P460NL1 steel

  Publication

  • T. Kozak

  - Advances in Materials Science - Year 2011

  Przedstawiono wyniki badań odporności na zimne pękanie złączy spawanych ze stali przeznaczonej do pracy pod ciśnieniem. Badano równoczesny wpływ zawartości wodoru dyfundującego i energii liniowej na naprężenie krytyczne w próbie implant dla złączy spawanych elektrodami otulonymi i drutem proszkowym w osłonie gazów ochronnych. Stwierdzono wpływ energii liniowej jak i zawartości wodoru dyfundującego na odporność na zimne pękanie...

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• Special Issue “Corrosion Resistance of Alloy and Coating Materials”

  Publication

  • Z. Brytan

  - Materials - Year 2022

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• Cement composites with expanded graphite as resistance heating elements

  Publication

  • M. Frąc
  • W. Pichór
  • P. Szołdra

  - JOURNAL OF COMPOSITE MATERIALS - Year 2020

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