Wyniki wyszukiwania dla: NON-MAGNETIC FRACTION

• The study on possibilities of recovery non-magnetic fraction by utilisation the magnetic separation technology in conditions of KGHM Polska Miedz S.A. division of concentrators = Próby odzysku frakcji niemagnetycznej metodą separacji magnetycznej w warunkach KGHM Polska Miedź S.A. Oddział Zakłady Wzbogacania Rud

  Publikacja

  • A. Konieczny
  • W. Pawlos
  • M. Krzemińska
  • K. Księżniak

  - Rok 2015

  W referacie przybliżono wyniki badań prowadzonych w kierunku określenia możliwości odzysku frakcji niemagnetycznej i słabomagnetycznej ze strumieni materiałowych O/ZWR, poprzez wykorzystanie metody separacji magnetycznej. Przeprowadzony cykl badawczy obejmował analizę występowania frakcji magnetycznej i związanej z nią frakcji niemagnetycznej w obiegach technologicznych w Rejonie ZWR Lubin, oraz możliwości ich odzysku. Uzyskane...

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• Non-Linear Interaction of Harmonic Waves in a Quasi-Isentropic Flow of Magnetic Gas

  Publikacja

  • A. Perelomova

  - Archives of Acoustics - Rok 2020

  The diversity of wave modes in the magnetic gas gives rise to a wide variety of nonlinear phenomenaassociated with these modes. We focus on the planar fast and slow magnetosound waves in the geometryof a flow where the wave vector forms an arbitrary angleθwith the equilibrium straight magnetic field.Nonlinear distortions of a modulated signal in the magnetic gas are considered and compared to thatin unmagnetised gas. The case of...

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• Identification of Non-Stationary Magnetic Field Sources Using the Matching Pursuit Method

  Publikacja

  • B. Palczynska
  • B. Pałczyńska

  - ENERGIES - Rok 2017

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• Zero phase shift digital filtering for assessment of exposure to non-sinusoidal magnetic fields

  Publikacja

  • T. Lisewski
  • A. Mikołajczyk-Bareła
  • S. Abramik
  • M. Ruciński

  - Rok 2016

  Accuracy of assessment of human body exposure to magnetic fields is affected by several uncertainty sources. One of them is estimation of the total exposure to non-sinusoidal fields. Standard methods can be implemented using analogue or digital filters that introduce a phase shift that affect the result of total exposure level estimation. The paper presents a new method that allows performing more precise assessment of exposure...

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• Nuclear Magnetic Relaxation and d-Wave Pairing in a Model of a Superconductor with Non-Retarded Attraction

  Publikacja

  • T. Kostyrko

  - PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS - Rok 1991

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• Effect of Thermal Treatment at Inert Atmosphere on Structural and Magnetic Properties of Non-stoichiometric Zinc Ferrite Nanoparticles

  Publikacja

  - METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE - Rok 2021

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• Exposure to non-continuous rotating magnetic field induces metabolic strain-specific response of Komagataeibacter xylinus

  Publikacja

  • R. Drozd
  • M. Szymańska
  • A. Żywicka
  • U. Kowalska
  • R. Rakoczy
  • M. Kordas
  • M. Konopacki
  • A. Junka
  • K. Fijałkowski

  - BIOCHEMICAL ENGINEERING JOURNAL - Rok 2021

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• Bio and slide biobearings, their lubrication by non-newtonian fluids and application in non-conventional systems. Vol. 1, Principles of human joint lubrication with non-newtonian liquids for deformable bone and cartilage in magnetic field

  Publikacja

  • K. Wierzcholski

  - Rok 2005

  W monografii przedstawiono zasady smarowania stawów człowieka o odkształcalnych chrząstkach i powierzchniach kostnych w polach indukcji magnetycznej. Uwzględnione zostały nienewtonowskie, lepkosprężyste właściwości cieczy synowialnych jako czynnika smarującego. Monografia prezentuje rozkłady wartości ciśnienia i nośności stawów człowieka w warunkach niestacjonarnego smarowania dla drgań o różnych amplitudach i częstotliwościach...

• Activated Cu catalysts for alcohol CVD synthesized non-magnetic bamboo-like carbon nanotubes and branched bamboo-like carbon nanotubes

  Publikacja

  • E. Borowiak-Palen
  • M. Rümmeli
  • E. Mijowska

  - SUPERLATTICES AND MICROSTRUCTURES - Rok 2009

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• Second law analysis of a 3D magnetic buoyancy-driven flow of hybrid nanofluid inside a wavy cubical cavity partially filled with porous layer and non-Newtonian layer

  Publikacja

  • A. Abderrahmane
  • A. Koulali

  - ANNALS OF NUCLEAR ENERGY - Rok 2023

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• Evaluation of structural change during fast transformation process of cross-linked NR into liquid NR by light pyrolysis

  Publikacja

  • X. Wu
  • K. Formela
  • R. Rasool
  • S. Wang

  - POLYMER DEGRADATION AND STABILITY - Rok 2017

  The presence of cross-linked networks in rubber creates a tremendous problem for recycling and reusing of waste rubber. Fast transformation of cross-linked natural rubber (NR) into liquid natural rubber was carried out by light pyrolysis in temperature range from 240 to 300 °C in variable time (in range: 1–30 min). The transformation efficiency was evaluated by measuring the sol fraction and the cross-link density of the gel fraction....

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• Structure and magnetic properties of BeO-Fe2O3-Al2O3-TeO2 glass-ceramic composites

  Publikacja

  • N. A. Wójcik
  • N. Tagiara
  • S. Ali
  • K. Górnicka
  • H. Segawa
  • T. Klimczuk
  • B. Jonson
  • D. Möncke
  • E. Kamitsos

  - JOURNAL OF THE EUROPEAN CERAMIC SOCIETY - Rok 2021

  In this work, glass-ceramics in the xBeO–20Fe2O3–(80-x)TeO2 system with x = 0–25 mol% were synthesized by the traditional melt quenching route and studied by inductively coupled plasma optical emission spectroscopy, X-ray diffraction, confocal microscopy, infrared and Raman spectroscopy. BeO addition was found to support the crystallization process of Fe2O3 during melting, and an increased BeO content was associated with an increased...

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• Chemical Characteristics and Thermal Oxidative Stability of Novel Cold-Pressed Oil Blends: GC, LF NMR, and DSC Studies

  Publikacja

  • W. Cichocki
  • D. Kmiecik
  • H. M. Baranowska
  • H. Staroszczyk
  • A. Sommer
  • P. Ł. Kowalczewski

  - Foods - Rok 2023

  Plant oils contain a high content of unsaturated fatty acids. Studies of food products have revealed a considerable disproportion in the ratio of ω6 to ω3. This article presents information on the healthful qualities of eight new oil blends that contain a beneficial proportion of ω6 to ω3 fatty acids (5:1), as well as their degradation during heating at 170 and 200 °C. The fatty acid profile was analyzed by gas chromatography (GC),...

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• Electromodulation and magnetomodulation of exciton dissociation in electron donor (starburst amine) : electron acceptor (bathocuproine) system

  Publikacja

  • D. K. Pelczarski
  • P. J. Grygiel
  • K. Falkowski
  • M. Klein
  • W. Stampor

  - ORGANIC ELECTRONICS - Rok 2015

  Electric field dependencies of electromodulated photoluminescence and photocurrents as well as the magnetic field effects on photocurrents, photovoltaic characteristics, electromodulated photoluminescence and photoluminescence have been investigated in vacuum evaporated films of m-MTDATA:BCP (4,4',4''-tris(N-(3-methylphenyl)-N-phenylamino)triphenylamine and bathocuproine) system. The electromodulation processes do remain in accordance...

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• Ewa Wagner-Wysiecka dr hab. inż.

  Osoby

  Katedra Chemii i Technologii Materiałów Funkcjonalnych

  Ewa Wagner-Wysiecka absolwentka Wydziału Chemicznego PG (Kierunek Technologia Chemiczna, kierunek dyplomowania: Technologia Nieorganiczna, specjalność: Analityka Techniczna i Przemysłowa). Pracę magisterską pt. ”Identyfikacja zanieczyszczeń występujących w farmakopealnej sulfachinoksalinie” zrealizowała pod kierunkiem prof. dr hab. inż. Jana F. Biernata. Po ukończeniu studiów magisterskich (1997 r.) rozpoczęła studia doktoranckie....

• Wpływ ścieków przemysłowych na energochłonność i efektywność procesów technologicznych w komunalnej oczyszczalni ścieków

  Publikacja

  • A. Remiszewska-Skwarek
  • S. Fudala-Książek
  • A. Łuczkiewicz

  - Rocznik Ochrona Środowiska - Rok 2016

  W artykule skupiono się na przedstawieniu wpływu jakości i ilości ścieków przemysłowych wprowadzanych do sieci kanalizacyjnej PEWIK GDYNIA Sp. z o. o. na stabilność procesów technologicznych. Określono również wpływ ścieków przemysłowych na energochłonność i efektywność oraz na wzrost kosztów oczyszczania ścieków komunalnych w Grupowej Oczyszczalni Ścieków „Dębogórze” w latach 2012-2015.

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• JOURNAL OF NON-CRYSTALLINE SOLIDS

  Czasopisma

  ISSN: 0022-3093 , eISSN: 1873-4812

• Opracowanie technologii spawania naprawczego szyn poddźwigowych A120 oraz badania nieniszczące jakości szyn w DCT w Porcie Północnym

  Publikacja

  • W. Kiełczyński
  • M. Głowacka
  • J. Haras
  • M. Siejka
  • M. Kiełczyński

  - Rok 2017

  Ekspertyza dotyczy realizacji zlecenia związanego z naprawą spoin szyn poddźwigowych na terenie terminalu kontenerowego - Deep Water Terminal (DCT) w Porcie Północnym w Gdańsku. W ramach opracowania: 1. Wykonano badania ultradźwiękowe (UT) i magnetyczno-proszkowe (MT) spoin czołowych szyn poddźwigowych typu A120, według schematu dostarczonego przez firmę SKANSKA S.A. 2. Wykonano analizę wyników badań...

• Thermal cooling process by nanofluid flowing near stagnating point of expanding surface under induced magnetism force: A computational case study

  Publikacja

  • F. Shahzad
  • W. Jamshed
  • A. A. Pasha
  • R. Safdar
  • M. M. Alam
  • M. Arshad
  • S. M. Hussain
  • M. B. Hafeez
  • M. Krawczuk

  - Case Studies in Thermal Engineering - Rok 2022

  This paper is dedicated to the exam of entropy age and research of the effect of mixing nanosolid additives over an extending sheet. In this review, Newtonian nanofluid version turned into researched at the actuated appealing field, heat radiation and variable heat conductivity results. With becoming modifications, the proven PDEs are moved into popular differential situations and paintings mathematically making use of a specific...

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• Poly(ε-Caprolactone)/Poly(Lactic Acid) Blends Compatibilized by Peroxide Initiators: Comparison of Two Strategies

  Publikacja

  • M. Przybysz-Romatowska
  • J. T. Haponiuk
  • K. Formela

  - Polymers - Rok 2020

  Poly(ε-caprolactone) (PCL) and poly(lactic acid) (PLA) blends were compatibilized by reactive blending and by copolymers formed during reaction in the solution. The reactive blending of PCL/PLA was performed using di-(2-tert-butyl-peroxyisopropyl)benzene (BIB) or dicumyl peroxide (DCP) as radical initiator. PCL-g-PLA copolymers were prepared using 1.0 wt. % of DCP or BIB via reaction in solution, which was investigated through...

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• JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

  Czasopisma

  ISSN: 0304-8853 , eISSN: 1873-4766

• Non-relational Databases 2022/2023

  Kursy Online

  • G. Gołaszewski
  • T. Zawadzka

  This course discusses the three types of non-relational databases (i.e. document, graph, key-value). The course is aimed at students in the 7th semester of computer science.

• Non-relational Databases 2023/2024

  Kursy Online

  • G. Gołaszewski
  • T. Zawadzka

  This course discusses the three types of non-relational databases (i.e. document, graph, key-value). The course is aimed at students in the 7th semester of computer science.

• Non-relational Databases 2024/2025

  Kursy Online

  • G. Gołaszewski
  • T. Zawadzka

  This course discusses the three types of non-relational databases (i.e. document, graph, key-value). The course is aimed at students in the 7th semester of computer science.

• Magnetic disturbances caused by magnetic contamination of plastics

  Publikacja

  • K. Jakubiuk
  • M. Wołoszyn
  • M. Chomnicki
  • J. Łubkowski

  - Przegląd Elektrotechniczny - Rok 2015

  In the study of low magnetic fields precision magnetometers working in a differential system are used. Two optically pumped magnetometers working in a differential system allow for precise measuring of disturbances in the magnetic field. In order to attain high accuracy of magnetic field measurement, it is necessary to use appropriate materials for the construction of a magnetometric system, particularly of those located closely...

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• MAGNETIC RESONANCE IN CHEMISTRY

  Czasopisma

  ISSN: 0749-1581 , eISSN: 1097-458X

• Bound on Bell inequalities by fraction of determinism and reverse triangle inequality

  Publikacja

  • P. Joshi
  • K. Horodecki
  • M. Horodecki
  • P. Horodecki
  • R. Horodecki
  • B. Li
  • S. Szarek
  • T. Szarek

  - PHYSICAL REVIEW A - Rok 2015

  It is an established fact that entanglement is a resource. Sharing an entangled state leads to nonlocal correlations and to violations of Bell inequalities. Such nonlocal correlations illustrate the advantage of quantum resources over classical resources. In this paper, we quantitatively study Bell inequalities with 2 × n inputs. As found in Gisin et al. [Int. J. Quantum. Inform. 05, 525 (2007)], quantum mechanical correlations...

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• The description of non-linear interactions of wave and non-wave modes in a non-adiabatic plasma flow

  Publikacja

  • A. Perelomova

  - CONTRIBUTIONS TO PLASMA PHYSICS - Rok 2021

  The method of derivation of non-linear equations for interacting modes is explained and applied to a plasma's flow affected by a magnetic field. It is based on the linear projecting of the total perturbation field into specific variations of variables in individual modes of a flow. The method may be applied in many examples of fluid flows with different mechanisms of non-adiabaticity. It is of special importance in complex flows...

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• Phosphorus and nitrogen forms in liquid fraction of digestates from agricultural biogas plants

  Publikacja

  • A. Lang
  • A. Wilińska-Lisowska
  • K. Czerwionka

  - ENVIRONMENTAL TECHNOLOGY - Rok 2021

  The novelty of the presented research is the determination of the nitrogen and phosphorus fraction in the liquid fraction of digestate from agricultural biogas plants. This information is important because it can help in proposing possible further liquid fraction management or developing of new technologies for their purification. The research covered digestates from agricultural biogas plants, obtained from the fermentation of...

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• Justyna Borucka dr inż. arch.

  Osoby

  Wydział Architektury, Katedra Architektury Mieszkaniowej i Użyteczności Publicznej

  Justyna Borucka jest adiunktem na Wydziale Architektury Politechniki Gdańskiej, koordynatorem programu Erasmus i współpracy zagranicznej, a od 2016 roku prodziekanem ds. rozwoju. Jest również członkiem Zarządu Stowarzyszenia Architektów Polskich (SARP Oddział Wybrzeże). Jej badania koncentrują się na teorii architektury i strategii odnowy miejskiej ze szczególnym wpływem interdyscyplinarnych relacji współczesnej architektury i...

• Influence of plastic deformation on stray magnetic field distribution of soft magnetic steel sample

  Publikacja

  • Z. Usarek
  • B. Augustyniak
  • M. Augustyniak
  • M. Chmielewski

  - IEEE TRANSACTIONS ON MAGNETICS - Rok 2014

  The effect of various combinations of conditions, i.e., presence of the Earth’s magnetic field during and after deformation on the distribution of stray magnetic field of S355 steel sample, which is locally deformed, was investigated. Some of the stages of the experiment were carried out in zero magnetic field. Compensation of the Earth’s magnetic field was obtained by the application of a pair of Helmholtz coils. These coils are...

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• Spectroscopic and magnetic studies of highly dispersible superparamagnetic silica coated magnetite nanoparticles

  Publikacja

  • K. Tadyszak
  • A. Kertmen
  • E. Coy
  • R. Andruszkiewicz
  • S. Milewski
  • I. Kardava
  • B. Scheibe
  • S. Jurga
  • K. Chybczyńska

  - JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS - Rok 2017

  Superparamagnetic behavior in aqueously well dispersible magnetite core-shell Fe3O4@SiO2 nanoparticles is presented. The magnetic properties of core-shell nanoparticles were measured with use of the DC, AC magnetometry and EPR spectroscopy. Particles were characterized by HR-TEM and Raman spectroscopy, showing a crystalline magnetic core of 11.5 ± 0.12 nm and an amorphous silica shell of 22 ± 1.5 nm in thickness. The DC, AC magnetic...

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• Model of ship's magnetic signature

  Publikacja

  • K. Jakubiuk
  • P. Zimny
  • M. Wołoszyn

  - Poznan University of Technology Academic Journals. Electrical Engineering - Rok 2011

  Ships made of ferromagnetic metals interfere with Earth's magnetic field in their surrounding. The disturbance of the magnetic field makes possible localization and even identification of the ship, which could determine a threat to the ship. The measurement of the magnetic field around the ship enables to determine its magnetic signature. The paper presents a multidipoles model of the ship magnetic field, which allows to determine...

• Investigation of magnetic order in a new intermetallic compound Nd2PtGe3

  Publikacja

  • L. Litzbarski
  • M. J. Winiarski
  • P. Skokowski
  • T. Klimczuk
  • B. Andrzejewski

  - JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS - Rok 2021

  In the present study we report a successful synthesis of the new intermetallic compound Nd2PtGe3 by an arc-melting method. The powder X-ray diffraction analysis indicates that this compound crystallizes in an disordered variant of the AlB2-type structure (space group P6/mmm, no. 191) with lattice parameters a = 4.2455 Å and c = 4. 1933 Å. The compound exhibits a cluster-glass transition below Tf = 2.9 K, characterized through ac...

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• Analysis of volatile fraction selected hybrid fruits using chromatographic techniques

  Publikacja

  • J. Myszka
  • M. Lubinska-Szczygeł
  • A. Różańska
  • J. Namieśnik

  - World Scientific News - Rok 2017

  At present, "healthy eating" is gaining in popularity. Many people associate this term with eating plenty of vegetables and fruits. The basic elements influencing the selection of fruit are their appearance and smell. Of course, their origin and impact on human health are also very important. In recent years, exotic fruits have become increasingly accessible, making them gaining popularity, even among Poles. You can also meet plants...

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• Direct determination of cadaverine in the volatile fraction of aerobically stored chicken breast samples

  Publikacja

  • W. Wojnowski
  • J. Płotka-Wasylka
  • K. Kalinowska
  • T. Majchrzak
  • T. Dymerski
  • P. Szweda
  • J. Namieśnik

  - MONATSHEFTE FUR CHEMIE - Rok 2018

  To supplement the currently used methods for poultry meat shelf life assessment, it might be necessary to develop a technique for rapid headspace analysis of volatiles with no prior sample preparation step. Biogenic amines, in particular cadaverine, are considered meat spoilage indicators. Described in this article are the results of a preliminary investigation of the applicability of proton transfer reaction mass spectrometry...

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• Insight into (Electro)magnetic Interactions within Facet-Engineered BaFe12O19/TiO2 Magnetic Photocatalysts

  Publikacja

  • S. Dudziak
  • C. Gómez-Polo
  • J. Karczewski
  • K. Nikiforow
  • A. Zielińska-Jurek

  - ACS Applied Materials & Interfaces - Rok 2023

  A series of facet-engineered TiO2/BaFe12O19 composites were synthesized through hydrothermal growth of both phases and subsequent deposition of the different, faceted TiO2 nanoparticles onto BaFe12O19 microplates. The well-defined geometry of the composite and uniaxial magnetic anisotropy of the ferrite allowed alternate interfaces between both phases and fixed the orientation between the TiO2 crystal structure and the remanent...

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• Magnetic photocatalysts for water treatment

  Publikacja

  • A. Zielińska-Jurek
  • S. Dudziak
  • Z. Bielan
  • A. Sulowska
  • I. Malinowska
  • I. Frąckiewicz

  - Rok 2019

  The concept of magnetic photocatalysts with separation function requires ferromagnetic material with high magnetic susceptibility to an external magnetic field to enable recycling of composite nanoparticles. Currently, much attention is devoted to functionalization of photocatalyst using MFe2O3, where M =Fe, Zn, Co, Mn. However direct contact between photocatalyst and magnetic iron oxide particles leads to photodissolution of iron...

• Analysis of aircraft magnetic interference

  Publikacja

  • M. Wołoszyn

  - Rok 2011

  The magnetometric method is used among other things on mobile platforms (planes, helicopters) in military systems and in geological research. Optically-pumped and SQUID magnetometers are used in magnetic systems on airplanes. To be able to attain the sensitivity of modern magnetometers in flight, it is important that maneuver-related magnetic interference effects be minimized. The mathematical model of an aircraft as a source of...

• Analysis of aircraft magnetic interference

  Publikacja

  • M. Wołoszyn

  - INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS - Rok 2012

  The magnetometric method is used among other things on mobile platforms (planes, helicopters) in military systems and in geological research. Optically-pumped and SQUID magnetometers are used in magnetic systems on airplanes. To be able to attain the sensitivity of modern magnetometers in flight, it is important that maneuver-related magnetic interference effects be minimized. The mathematical model of an aircraft as a source of...

• Magnetic signatures of land vehicles

  Publikacja

  • M. Nowak
  • M. Chomnicki
  • M. Wołoszyn

  - Rok 2016

  The results of numerical simulations of the magnetic field surrounding of land vehicles' models have been presented in this paper. Vehicle containing of ferromagnetic elements distorts the Earth's magnetic field. This distortion can be measured by magnetometers. It is possible to detect and identify an object on the basis of its magnetic signature.

• Multidipoles model of ship's magnetic field

  Publikacja

  • K. Jakubiuk
  • P. Zimny
  • M. Wołoszyn

  - Rok 2011

  Ships made of ferromagnetic metals interfere with Earth's magnetic field in their surrounding. The disturbance of the magnetic field makes possible localization and even identification of the ship, which could determine a threat to the ship. The measurement of the magnetic field around the ship enables to determine its magnetic signature. The paper presents a multidipoles model of the ship magnetic field, which allows to determine...

• Multidipoles model of ship's magnetic field

  Publikacja

  • M. Wołoszyn
  • P. Zimny
  • K. Jakubiuk

  - INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS - Rok 2012

  Ships made of ferromagnetic metals interfere with Earth's magnetic field in their surrounding. The disturbance of the magnetic field makes possible localization and even identification of the ship, which could determine a threat to the ship. The measurement of the magnetic field around the ship enables to determine its magnetic signature. The paper presents a multidipoles model of the ship magnetic field, which allows to determine...

• Inspection of Gas Pipelines Using Magnetic Flux Leakage Technology

  Publikacja

  • Z. Usarek
  • K. Warnke

  - Advances in Materials Science - Rok 2017

  Magnetic non-destructive testing methods can be classified into the earliest methods developed for assessment of steel constructions. One of them is the magnetic flux leakage technology. A measurement of the magnetic flux leakage is quite commonly used for examination of large objects such as tanks and pipelines. Construction of a magnetic flux leakage tool is relatively simple, but a quantitative analysis of recorded data is a...

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• Anna Zielińska-Jurek prof. dr hab. inż.

  Osoby

  Katedra Inżynierii Procesowej i Technologii Chemicznej

  Research work on photocatalysis by Prof. Anna Zielinska-Jurek started in 2006 at Gdansk University of Technology (Poland), including 3-month research stay at Hokkaido University, Training School “Environmental Applications of TiO2 Photocatalysis” at the University of Oulu in Finland granted by COST Program and Training School “NanoBiophotonics” at the Beckmann Institute, Urbana-Champaign in the USA granted by University of Illinois....

• Enhancement of the Magnetic Coupling in Exfoliated CrCl 3 Crystals Observed by Low‐Temperature Magnetic Force Microscopy and X‐ray Magnetic Circular Dichroism

  Publikacja

  • M. Serri
  • G. Cucinotta
  • L. Poggini
  • G. Serrano
  • P. Sainctavit
  • J. Strychalska-Nowak
  • A. Politano
  • F. Bonaccorso
  • A. Caneschi
  • R. J. Cava... i 5 innych

  - ADVANCED MATERIALS - Rok 2020

  Magnetic crystals formed by 2D layers interacting by weak van der Waals forces are currently a hot research topic. When these crystals are thinned to nanometric size, they can manifest strikingly different magnetic behavior compared to the bulk form. This can be the result of, for example, quantum electronic confinement effects, the presence of defects, or pinning of the crystallographic structure in metastable phases induced by...

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• Isolation of the relative decrease in magnetic permeability contribution to reluctance of an open magnetic circuit based on stray field measurements

  Publikacja

  • Z. Usarek

  - NDTnet - Rok 2018

  The goal of the study was to evaluate a relative decrease in magnetic permeability in open magnetic circuits based on stray magnetic field measurements. The boundary element method was used to simulate magnetic circuits with variable geometry and variable magnetic permeability. The simulated magnetic circuits were rectangular or bone-shaped flat samples. Reluctance was increased in the middle of the samples resulting in leakage...

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• Magnetic properties of α-KCoPO4 compound with a chiral polar crystal structure

  Publikacja

  • J. Kondek
  • S. Szczupaczyńska-Zalewska
  • M. J. Winiarski

  - JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS - Rok 2022

  We have obtained polycrystalline samples of a metastable α variant of KCoPO4 by low temperature (350–400 °C) solid state metathesis reaction of potassium oxalate and ammonium cobalt orthophosphate. The material crystallizes in a polar chiral structure (sg. P63, no. 173). Measurements of magnetic properties reveal antiferromagnetic interactions and no ordering observed down to T = 1.9 K, well below the Weiss temperature |Θcw| =...

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• The Dynamic Model of Magnetic Hysteresis

  Publikacja

  • A. Wilk
  • M. Michna

  - Rok 2015

  This paper presents the scalar dynamic magnetic hysteresis model based on the Preisach theory. The important role in this theory played hysteresis operator states. The changes of these operators` states are not immediate in the dynamic model but they are a function of time and parameter k representing the magnetic properties of the material. In this paper the transient state of the hysteresis operator is defined by the nonlinear...

• Nitrogen fraction fluctuation during wastewater treatment in a multistage treatment wetland

  Publikacja

  • M. Gajewska

  - Rok 2010

  Although the size of pollutants discharged to a WWTP plays an important and often underestimated role in characterizing treat ability and hence the degree of contaminant removal of wastewater. From one hend In order to obtain efficient nitrogen removal in thedenitrification process, sufficient amounts of bioavailable carbon source should be ensured bur for the other hand in TWs, particulates from the wastewater are naturally trapped...