Search results for: materialy porowate

• Fabrication, structural and electrical properties of Sr(V,Nb)O 3-δ perovskite materials

  Publication

  • T. Miruszewski
  • B. Kamecki
  • M. S. Łapiński
  • J. Karczewski

  - MATERIALS CHEMISTRY AND PHYSICS - Year 2018

  The SrV1-xNbxO3-δ materials with different niobium content in perovskite B-sublattice were prepared by a solid-state reaction process. The microstructure and phase compositions of obtained samples were analyzed by the X-ray diffraction technique (XRD) and scanning electron microscopy (SEM). The electrical conductivity of samples was measured by a DC 4-wire method in range of 100–600 °C in different gas conditions. The oxidation...

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• Modeling and MANOVA studies on toxicity and endocrine potential of packaging materials exposed to different extraction schemes

  Publication

  • N. Jatkowska
  • B. Kudłak
  • S. Tsakovski
  • G. Yotova
  • M. Nedyalkova
  • V. Simeonov
  • A. Dołęga
  • J. Namieśnik

  - ENVIRONMENTAL RESEARCH - Year 2018

  The stability of the linings of packaging that is in contact with the goods stored has been of major concern during decades of the development of packaging materials. In this work, an attempt was undertaken to assess the applicability of using two bioassays (Microtox® and XenoScreen YES/YAS) in estimating the stability of packaging (cans, caps, multilayer material) and the impact of their degradation on the toxicity of some simulated media....

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• The Influence of the Chemical Composition of Selected Waste Materials from the Production of Copper on the Final Environmental Assessment

  Publication

  • A. Bydałek
  • S. Biernat
  • P. Schlafka
  • M. Holtzer
  • W. Wołczyński
  • F. A. Bydałek

  - ARCHIVES OF METALLURGY AND MATERIALS - Year 2016

  This article presents qualitative and quantitative analysis of the waste produced by KGHM Polska Miedź. The waste has been analyzed according to its chemical composition and balanced in order to be reused and recycled. Special attention has been paid to mining industries producing the biggest amount of waste and ore enrichment businesses generating waste, which isn’t reused nowadays. Laboratory reseach has been conducted on floatation...

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• Łukasz Skarżyński dr hab. inż.

  People

  Department of Building Structures and Material Engineering

• International Journal of Material Forming

  Journals

  ISSN: 1960-6206 , eISSN: 1960-6214

• HIGH TEMPERATURE MATERIAL PROCESSES

  Journals

  ISSN: 1093-3611

• Wood Material Science & Engineering

  Journals

  ISSN: 1748-0272 , eISSN: 1748-0280

• Material Design and Processing Communications

  Journals

  eISSN: 2577-6576

• Journal of Applied Materials Engineering

  Journals

  ISSN: 1899-2439 , eISSN: 2084-123X

• MATERIALES DE CONSTRUCCION

  Journals

  ISSN: 0465-2746 , eISSN: 1988-3226

• Poszukiwania kandydata na bezmatrycowy materiał odniesienia lotnych analitów

  Publication

  • A. Naganowska-Nowak

  - Year 2006

  W pracy przedstawiono badania mające na celu wyprodukowanie bezmatrycowego materiału odniesienia lotnego analitu (chlorku metylu), którego nośnikiem będzie włókno szklane o wzmocnionej wytrzymałości mechanicznej. W tym celu badaniom poddawano:- włókna szklane pokryte filmem poliimidu, na które nanoszono cienką warstwę metalicznego glinu lub tytanu o znanej grubości- włókna szklane z naniesioną handlowo cienką warstwą metalicznego...

• Maternal smoking Modulates Fatty Acid Profile of Breast Milk

  Publication

  • A. Szlagatys-Sidorkiewicz
  • D. Martysiak-Żurowska
  • G. Krzykowski
  • M. Zagierski
  • B. Kamińska

  - ACTA PAEDIATRICA - Year 2013

  AIM: We hypothesized that the fatty acid composition of breast milk can be affected by a smoking habit in the mother. Consequently, this study verified whether maternal smoking modulates, and if so to what extent, the breast milk fatty acid profile. METHODS: The study included 20 postpartum women who declared smoking more than five cigarettes daily throughout a period of pregnancy and lactation, and 136 non-smoking postpartum women....

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• Determination of the thermal conductivity of material dividing the metallic core elements of the bi-calorimeter using modified theory

  Publication

  • T. Wilczewski

  - Archives of Thermodynamics - Year 2006

  W pracy przedstawiono zmodyfikowaną teorię bikalorymetru z dzielonym metalowym rdzeniem. Pomiędzy dwiema częściami rdzenia umieszczano próbki badanego ciała stałego lub gazu. Ogrzewano jedną stronę rdzenia. Mierzono temperaturę obu części rdzenia w funkcji czasu. Uzyskane wyniki umożliwiły wyznaczenie różnicy temperatur i strumienia ciepła, przepływającego przez próbkę. Z zastosowaniem prawa Fouriera obliczano współczynnik przewodności...

• Wytwarzanie bezmatrycowego materiału odniesienia lotnych analitów w medium gazowym

  Publication

  • A. Naganowska-Nowak

  - Year 2007

  W pracy przedstawiono wyniki kolejnego etapu badań nad możliwością wytworzenia bezmatrycowego materiału odniesienia lotnych związków organicznych w mediach gazowych. Do generowania składników mierzonych (chlorek metylu lub eten) odpowiednich gazowych mieszanin wzorcowych wykorzystano technikę termicznego rozkładu związków powierzchniowych. Przedmiotem badań były:-włókna szklane z naniesionym cienkim filmem poliimidowym, pokryte...

• Badania tytanianu strontu - materiału anodowego dla ogniw paliwowych SOFC

  Publication

  • B. Bochentyn

  - Biuletyn Polskiego Stowarzyszenia Wodoru i Ogniw Paliwowych - Year 2010

  W artykule opisano wyniki badan nad kompozytami Sr(Ti,Nb)O3-YSZ przygotowywane metoda mieszania proszkow w mozdzierzu agatowym. Scharakteryzowano ich wlasciwosci strukturalne, elektryczne i mechaniczne.

• Wodoprzepuszczalność gruntów organicznych jako materiału konstrukcyjnego korpusów nasypów przeciwpowodziowych

  Publication

  • B. Brzeziński

  - Materiały Budowlane - Year 2017

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• Laminaty FRP w budownictwie - charakterystyka materiału i aspekty projektowania

  Publication

  • B. Sobczyk
  • M. Miśkiewicz

  - Materiały Budowlane - Year 2015

  W artykule przedstawiono charakterystykę laminatów polimerowych wzmacnianych włóknami. W pierwszej części zaprezentowano teoretyczne modele materiałowe, podstawowe zależności naprężenie-odkształcenie włókien, matrycy oraz laminatu powstałego przez połączenie obydwu składników. Na tej podstawie sformułowano zalecenia dotyczące praktycznego wykorzystania laminatu w kontekście jego wytężenia w projektowaniu elementów konstrukcyjnych....

• Historia i materialne relikty fortyfikacji Westerplatte sprzed 1920 r.

  Publication

  • A. Woźniakowski

  - Year 2019

  Z uwagi na swoje położenie Westerplatte od momentu uformowania się wyspy, a następnie półwyspu, miało kluczowe znaczenie dla obrony wejścia do portu w Gdańsku. Pierwsze znane nowożytne fortyfikacje na terenie Westerplatte to oszańcowany obóz warowny wojsk pruskich z końca XVII w., ale najintensywniejsza rozbudowa umocnień nastąpiła od połowy XIX w., kiedy położono większy nacisk na zabezpieczenie ujścia Wisły. Od lat osiemdziesiątych...

• NOWOCZESNE ELEKTRODY NA BAZIE REDUKOWANEGO TLENKU GRAFENU

  Publication

  • I. Kondratowicz
  • K. Sadowska
  • W. Sadowski

  - Fizyka w Szkole - Year 2016

  Porowate elektrody węglowe od dawna przykuwają zainteresowanie naukowców ze względu na ich dobre przewodnictwo elektryczne i wysoko rozwiniętą powierzchnię właściwą. W ramach rozpowszechnionych badań nad grafenem opracowano wiele metod jego produkcji na szerszą skalę. Należy wyróżnić przede wszystkim metodę chemicznej redukcji tlenku grafenu. Powstający w tym procesie redukowany tlenek grafenu posiada strukturę zbliżoną do grafenu....

• Fatal intoxication with N-ethylpentylone: a case report and method for determining N-ethylpentylone in biological material

  Publication

  • M. Zawadzki
  • K. Nowak
  • P. Szpot

  - Forensic Toxicology - Year 2020

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• Injection of charge into the archetype organics hole transporting material TPD at the electrical contacts with ITO and Al

  Publication

  • J. Kalinowski
  • K. Szybowska

  - ORGANIC ELECTRONICS - Year 2008

  W pracy zaprezentowano dokładną analizę charakterystyk polowo-prądowych jednowarstwowych układów kwarc/ITO/TPD/Al oraz kwarc/Al1/TPD/Al2, zawierających próżniowo naparowane warstwy pochodnej diaminy (TPD) używane powszechnie jako materiał przewodzący dziury w organicznych diodach elektroluminescencyjnych. Prądy są zdominowane przez iniekcję dziur niezależnie od polaryzacji kontaktów elektrycznych. Oprócz oczywistej asymetrii w...

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• Injection of charge into the archetype organic hole transporting material TPD at the electrical contacts with ITO and Al

  Publication

  • J. Kalinowski
  • K. Szybowska

  - ORGANIC ELECTRONICS - Year 2008

  W pracy opisano mechanizm przewodnictwa ciemnego w układzie ITO/warstwa TPD/Al oraz Al/warstwa TPD/Al, gdzie TPD oznacza dwaminę powszechne stosowaną jako transporter dziur w organicznych diodach EL.

• Influence of analysis of features geometrical abrasive grains stress, strain and displacement of material in zone microgrinding

  Publication

  • W. Kacalak
  • Ł. Rypina
  • T. Królikowski

  - Mechanik - Year 2015

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• Analysis of stress and strains, forces and energy in initial contact zone abrasive grain with treating material

  Publication

  • W. Kacalak
  • Ł. Rypina
  • T. Królikowski

  - Mechanik - Year 2015

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• To donate or not to donate? Future healthcare professionals’ opinions on biobanking of human biological material for research purposes

  Publication

  • J. Domaradzki
  • J. Czekajewska
  • D. Walkowiak

  - BMC Medical Ethics - Year 2023

  Background Over the last few decades biobanks have been recognised as institutions that may revolutionisebiomedical research and the development of personalised medicine. Poland, however, still lacks clear regulationsregarding the running of biobanks and the conducting of biomedical research. While the awareness of the generalpublic regarding biobanks is low, healthcare professions and medical students also...

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• To donate or not to donate? Future healthcare professionals’ opinions on biobanking of human biological material for research purposes

  Publication

  • J. Domaradzki
  • J. Czekajewska
  • D. Walkowiak

  - BMC Medical Ethics - Year 2023

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• ADAPTATION OF ENGINEERING FEA-BASED ALGORITHMS TO LCF FAILURE AND MATERIAL DATA PREDICTION IN OFFSHORE DESIGN

  Publication

  • M. Augustyniak
  • P. Gajewski
  • K. Świątek

  - Journal of Theoretical and Applied Mechanics - Year 2016

  There is an ever growing industrial demand for quantitative assessment of fatigue endurance of critical structural details. Although FEA-based calculations have become a standard in engineering design, problems involving the Low-To-Medium cycle range (101-104) remain challenging. This paper presents an attempt to optimally choose material data, meshing density and other algorithm settings in the context of recent design of the...

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• Luminescence recognition material as an INHIBIT logic gate in presence of Pb2+ and Cu2+ ions in aqueous solutions

  Publication

  • M. Orłowska
  • A. Kłonkowski
  • J. Jezierska
  • J. Ryl

  - SENSORS AND ACTUATORS B-CHEMICAL - Year 2013

  A recognition material consisting of silica xerogel with amino-modified surface selectively recognizes Pb2+ and Cu2+ (but only in presence of Pb2+ ions) in aqueous solutions of other metal ions. The analytical action of the material is based on a significant change in luminescence emission spectra of the material after chemisorption of Pb2+ ions. In the presence of Pb2+ in octahedral coordination environment, a new broad and strong...

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• A random field-based simulational identification of possible levels of material imperfections of adhesive-bonded joints

  Publication

  • K. Winkelmann
  • F. Jan
  • Ł. Smakosz
  • V. Konopińska-Zmysłowska
  • V. Eremeyev
  • M. Kujawa

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Year 2024

  Recently, structural adhesives have become significant in the shaping of structural elements, especially in thin-walled structures, where they replace or supplement traditional connection methods. However, adhesive-bonded joints are highly susceptible to internal structural imperfections due to their application technique and the nature of the adhesive. These material inconsistencies impact the strength parameters and the mechanical...

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• One Year Evaluation of Material Properties Changes of Polylactide Parts in Various Hydrolytic Degradation Conditions

  Publication

  • A. J. Andrzejewska-Sroka

  - Polymers - Year 2019

  Biodegradable biocompatible materials are widely used in medical applications. Determining the possibility of using biodegradable materials depends on determining the changes in their parameters over time due to degradation. The current scientific research on biodegradable materials has presented results based on research methods characterized by the different geometry and cross-section size of the specimen, type of degradation...

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• A comprehensive evaluation of flexible FDM/FFF 3D printing filament as a potential material in medical application

  Publication

  • A. Haryńska
  • I. Carayon
  • P. Kosmela
  • K. Szeliski
  • M. S. Łapiński
  • M. Pokrywczyńska
  • J. Kucińska-Lipka
  • H. Janik

  - EUROPEAN POLYMER JOURNAL - Year 2020

  The use of FDM/FFF in 3D printing for medical sciences is becoming common. This is due to the high availability and decent price of both 3D printers and filaments useful for FDM/FFF. Currently, researchers' attention is focused mainly on the study of medical filaments based on PLA, PCL or their modifications. This contributes to insufficient diversity of medical-grade filaments on the market. Moreover, due to the lack of specified...

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• The use of Preston equation to determine material removal during lap-grinding with electroplated CBN tools

  Publication

  • M. Deja

  - WEAR - Year 2023

  Grinding executed in a lapping configuration is an alternative finishing process benefiting from both grinding and free-abrasive machining, while minimizing the heat effect impact. Electroplated tools can be effectively used in different abrasive processes, including high-speed grinding, however, the assessment of machining performance over time is a key factor in their correct use to achieve satisfactory technological results....

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• Poly(hydroxybutyrate-co-hydroxyvalerate) as a biodegradable binder in a negative electrode material for lithium-ion batteries

  Publication

  • A. Nowak
  • K. Trzciński
  • Z. Zarach
  • J. Li
  • D. Roda
  • M. Szkoda

  - APPLIED SURFACE SCIENCE - Year 2022

  In this work, graphite-based negative electrode for lithium-ion battery consisting a novel and biodegradable binder poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) is compared with standard graphite electrode with polyvinylidene fluoride (PVDF) as a binder. The rate and cycling performance of lithium ion insertion/extraction of electrodes with PHBV in a half-cell configuration are evaluated. Moreover, on the basis of the electrochemical...

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• Numerical Analysis of Mice Carotid Arteries’ Response Emphasizing the Importance of Material Law Constants’ Validation

  Publication

  • B. Sobczyk
  • J. Chróścielewski
  • K. Wilde

  - Applied Sciences-Basel - Year 2024

  In this paper, a detailed validation of the passive material properties of mice carotid arteries and constants of the Fung and Holzapfel hyperelastic material laws is conducted by means of static nonlinear FEM analyses. The response of the carotid arteries in an inflation test is studied here for the following mouse models: wild-type, mdx, sgcd−/−, Eln+/+, Eln+/−, Fbln5+/+, and Fbln5−/−. All FEM computations are conducted on models...

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• Analysis of Roughness, the Material Removal Rate, and the Acoustic Emission Signal Obtained in Flat Grinding Processes

  Publication

  • P. Sender
  • I. Buj - Corral
  • J. Álvarez-Flórez

  - Machines - Year 2024

  In this work, the analysis of the acoustic emission (AE) signal in grinding processes is addressed. The proposed analysis method decomposes the acoustic signal into three frequency ranges. The total energy of each range is determined, as well as the highest frequency. Different grinding experiments were carried out, according to a full factorial design of experiments (DOE), in which feed speed, depth of cut, and transversal step...

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• REVIEW OF CURRENT RESEARCH ON CHITOSAN AS A RAW MATERIAL IN THREE-DIMENSIONAL PRINTING TECHNOLOGY IN BIOMEDICAL APPLICATIONS

  Publication

  • S. Mania
  • A. Banach-Kopeć
  • R. Tylingo

  - Progress on Chemistry and Application of Chitin and Its Derivatives - Year 2020

  Three-dimensional (3D) biomaterial manufacturing strategies show an extraordinary driving force for the development of innovative solutions in the biomedical sector, including drug delivery systems, disease modelling and tissue and organ engineering. Due to its remarkable and promising biological and structural properties, chitosan has been widely studied for decades in several potential applications in the biomedical field. However,...

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• Evaluation of Praseodymium and Gadolinium Doped Ceria as a Possible Barrier Layer Material for Solid Oxide Cells

  Publication

  • B. Kamecki
  • J. Karczewski
  • P. Jasiński
  • S. Molin

  - ECS Transactions - Year 2019

  In this work, nanocrystalline layers based on the Pr, Gd co-doped CeO2 were investigated. For the preparation of thin layers, lowtemperature spray pyrolysis technique was used. Different stoichiometries of the layers were produced for comparison on polished sapphire substrates. The microstructure of the prepared thin layers was studied by scanning electron microscopy (SEM), energydispersive X-ray spectroscopy (EDS) and X-ray diffractometry (XRD)....

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• Experimental studies on the impact of changing the pipe material on the propagation of the pressure wave during water hammer

  Publication

  • N. K. Gietka

  - Acta Scientiarum Polonorum Formatio Circumiectus - Year 2019

  Aim of the paper is to present the results studying the water hammer phenomenon in pipes made of different materials, and to show the impact of changing the type of material of the pipe on the velocity of the pressure wave during the transient flow in the pipes. In terms of research material and methods, pipes made of galvanized steel and high-density polyethylene were tested. Measurements were made using strain gauges with a high...

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• Membranowe przekrycia wiszące -zagadnienia konstrukcyjno-materiałowe. Membrane hanging roof - constructional-material problems.

  Publication

  • A. Ambroziak
  • P. Kłosowski

  - Year 2005

  Artykuł przedstawia przykłady zastosowania membranowych przekryć wiszących w budownictwie ogólnym. Dodatkowo zwraca uwagę na wybrane zagadnienia konstrukcyjno-materiałowe tego typu obiektów.This paper presents the application examples of membrane hanging roof in building engineering. Additionally, attention to the chosen constructional-material problems of this type of structures has been focused.

• Geometrical conditions of saw blade`s entering into and going out of material during wood cutting

  Publication

  • R. Wasielewski

  - Annals of WULS, Forestry and Wood Technology - Year 2003

  W pracy przedstawiono analizę geometrycznych warunków wejścia i wyjścia ostrza piły z materiału obrabianego przy przecinaniu drewna. Przedstawiono czasowy i przestrzenny rozkład geometrycznych parametrów wejścia i wyjścia ostrza i ich wpływ na trwałość ostrzy i dokładność przecinania.

• Behaviour of orthotropic surgical implant in hernia repair due to the material orientation and abdomen surface deformation

  Publication

  • I. Lubowiecka

  - COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING - Year 2015

  relation to the different range of typical deformations observed in different directions and zones of abdomen surface due to the patients’ life activities, has a significant influence on the extreme junction forces in the mesh–tissue connections and hence the repair persistence. The finite element model of the orthotropic implant was developed, and the junction forces in the connections of tissue and mesh were studied. The kinematical...

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• Application of the Murnaghan model in analysis of non-linear elastic material properties of pvc-coated fabric

  Publication

  • A. Ambroziak

  - TASK Quarterly - Year 2006

  W pracy omówiono proces identyfikacji parametrów materiałowych dla wybranej tkaniny technicznej typu Panama. Zaproponowano metodę identyfikacji nieliniowo sprężystych właściwości tkaniny Panama dla modelu Murnaghan'a. Określono zakres stosowalności nieliniowo sprężystych parametrów, w oparciu o doraźną wytrzymałości tkaniny na rozciąganie, która poddana redukcji określa tzw. wytrzymałość długoterminową. Opisano doświadczenia niezbędne...

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• Can bottom sediments be a prospective fertilizing material? A chemical composition analysis for potential reuse in agriculture.

  Publication

  • K. Matej-Łukowicz
  • E. Wojciechowska
  • J. Strycharz
  • M. Szubska
  • K. Kuliński
  • J. Bełdowski
  • A. Winogradow

  - Materials - Year 2021

  Every year huge amounts of bottom sediments are extracted worldwide, which need to be dis-posed. The recycling of bottom sediments for soil fertilization is in line with the long-promoted circular economy policy and enables the use of micro and macronutrients accumulated in sedi-ments for soil fertilization. When considering potential agricultural reuse of the dredge sediments, the first necessary step should be to analyze whether...

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• Multi-functional sensor based on photonic crystal fiber using plasmonic material and magnetic fluid

  Publication

  • M. Bilal
  • S. Lopez-Aguayo
  • M. Szczerska
  • H. Madni

  - OSA Continuum - Year 2022

  A unique highly sensitive photonic crystal fiber is investigated based on plasmonic material and magnetic fluid (MF) for the simultaneous measurement of temperature and magnetic field sensor. The designed sensor is explored by tracing the different parameters such as birefringence, coupling length, power spectrum, and the peak wavelength of the transmission intensity. The magnetic field and temperature computation are attained...

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• Fatigue life improvement using low transformation temperature weld material with measurement of residual stress

  Publication

  • J. Franks
  • G. Wheatley
  • P. Zamani
  • R. Masoudi Nejad
  • W. Macek
  • R. Branco
  • F. Samadi

  - INTERNATIONAL JOURNAL OF FATIGUE - Year 2022

  Welding processes often produce high levels of tensile residual stress. Low transformation temperature (LTT) welding wires utilise phase transformation strains to overcome the thermal contraction of a cooling weld. In this paper, the residual stress within each weld was quantified using the milling/strain gauge method, being the strain change measured as the weldment was milled away. The fatigue tests were conducted under uniaxial...

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• The Quarterly of the History of Material Culture

  Journals

  ISSN: 0023-5881

• Powłoka hydroksyapatytowa na nanorurkowej warstwie tlenkowej na stopie tytanu

  Publication

  • S. Sobieszczyk

  - Engineering of Biomaterials / Inżynieria Biomateriałów - Year 2012

  Przedstawiono sposób nakładania powłok hydroksyapatytowych na porowaty stop tytanu Ti13Nb13Zr za pomocą osadzania biomimetycznego poprzez zanurzenie materiału w przesyconym symulowanym płynie fizjologicznym. Powłoka hydroksyapatytowa została osadzona na nanorurkową warstwę tlenkową, otrzymaną w wyniku utleniania elektrochemicznego w roztworze zawierającym jony fluorkowe.

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• Analysis of the properties of the YSTF ceramics materials before and after reduction

  Open Research Data

  open access

  • M. Łapiński

  The valence of titanium in reduced YSTF ceramics materials was investigated. Ceramics were reduced by annealing in a hydrogen atmosphere. For comparison unreduced sample was also measured. Valance state was measured by XPS method.

• The Setting Time of Polyether Impression Materials after Contact with Conventional and Experimental Gingival Margin Displacement Agents

  Publication

  • D. Nowakowska
  • Z. Raszewski
  • M. Ziętek
  • J. Saczko
  • J. Kulbacka
  • W. Więckiewicz

  - Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry - Year 2018

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• Energy-Saving Mechatronic System for Fatigue Tests of Materials under Variable-Amplitude Proportional Bending and Torsion

  Publication

  • W. Macek
  • E. Macha

  - Solid State Phenomena - Year 2010

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