Rok 2019

• A Simplified Method of Trend Removal to Determine Noise Observed During a Supercapacitor’s Discharging

  Publikacja

  • Ł. Lentka
  • J. Smulko

  - FLUCTUATION AND NOISE LETTERS - Rok 2019

  In this paper, new method of trend removal is proposed. This is a simplified method based on Empirical Mode Decomposition (EMD). The method was applied for voltage time series observed during supercapacitor discharging process. It assured the determination of an additive noise component after subtracting the identified trend component. We analyzed voltage time series observed between the terminals of the supercapacitor when discharged...

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• A study of a compact high-efficiency zero-emission power plant with oxy-fuel combustion

  Publikacja

  • P. Ziółkowski
  • J. Badur

  - Rok 2019

  This paper discusses the application of global trends in gas cycles technology using oxy-fuel combustion. This is followed by a demonstration of a design solution for a new cycle with two enhanced energy-converting devices, namely a wet combustion chamber and a spray-ejector condenser. The proposed gas and steam cycle unit is contained within a single turbine, whose benefits combine those offered by gas turbines (high inlet temperatures)...

• A Study of Transport Behaviour of Academic Communities

  Publikacja

  • A. Romanowska
  • R. Okraszewska
  • K. Jamroz

  - Sustainability - Rok 2019

  An important challenge to achieving sustainable university campuses is ensuring that the academic community makes sustainable transport choices. The objective of this study was to investigate the daily commuting patterns, identify the potential for change, and determine the factors and criteria affecting the transport decisions of academic communities of two universities located in Gdansk, Poland. This paper summarizes the results...

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Rok 2023

• A simplified method to assess the impact of ship-to-ship collision on the risk of tanker ship hull girder breaking accounting for the effect of ageing

  Publikacja

  • K. Wołoszyk
  • J. Montewka
  • F. Goerlandt

  - Rok 2023

  One of the most critical structural failures is the exceedance of the ship hull girder’s ultimate strength, which may result in hull breaking, and subsequent severe consequences, including loss of life and property as well as environmental damage in case of an oil spill. A cause for such loss of structural continuity can be triggered by a collision with another vessel. In addition, the ageing mechanisms of the hull structure could...

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• A Simplified SVPWM Technique for Five-leg Inverter with Dual Three-phase Output

  Publikacja

  • D. Kondratenko
  • A. Lewicki

  - Rok 2023

  This article proposes a simplified space vector pulse-width modulation (SVPWM) technique five-leg inverter with dual three-phase output. An idea to fed the dual tree-phase machine by the multiphase voltage source inverters (VSIs) is not new. Dual- and multi-motor drive systems are widely used in the industry applications. The most popular fields are: electric vehicles (EVs) and traction systems. Moreover, the specific characteristic...

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• A Simplistic Downlink Channel Estimation Method for NB-IoT

  Publikacja

  • J. Magiera

  - Applied Sciences-Basel - Rok 2023

  This paper presents a downlink channel estimation method intended for a Narrowband Internet of Things (NB-IoT) access link. Due to its low computational complexity, this method is well suited for energy-efficient IoT devices, still providing acceptable reception quality in terms of signal-to-noise (SNR) performance. This paper describes the physical layer of NB-IoT within the scope of channel estimation, and also reviews existing...

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• A Study of Mutual Coupling Suppression between Two Closely Spaced Planar Monopole Antenna Elements for 5G New Radio Massive MIMO System Applications

  Publikacja

  • R. Aziz
  • S. Kozieł
  • L. Leifsson
  • S. Szczepański

  - Electronics - Rok 2023

  5G NR (new radio) introduces the concept of massive MIMO (multiple-input-multiple-output) technology, in which a larger number of antenna arrays are installed on the transceiver. Due to the increased number of antenna elements allocated close to each other (approximately at half-wavelength distance), mutual coupling becomes a serious problem leading to performance degradation of the MIMO communication system. In this communication,...

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Rok 2013

• A simplified model of 3-D pipe system conveying flowing liquid

  Publikacja

  • C. Orlikowski
  • R. Hein

  - Solid State Phenomena - Rok 2013

  The paper presents a model reduction technique of a 3-D pipe system with flowing liquid. In the analysis and design of control (mechatronic) systems it is useful to work with simple, low order models. A hybrid reduced order model is proposed. The system model consists of two parts, the modal model and the finite element model.

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• A solid phase extraction–ion chromatography with conductivity detection procedure for determining cationic surfactants in surface water samples

  Publikacja

  • E. Olkowska
  • Ż. Polkowska
  • J. Namieśnik

  - TALANTA.The International Journal of Pure and Applied Analytical Chemistry - Rok 2013

  A new analytical procedure for the simultaneous determination of individual cationic surfactants (alkyl benzyl dimethyl ammonium chlorides) in surface water samples has been developed. We describe this methodology for the first time: it involves the application of solid phase extraction (SPE – for sample preparation) coupled with ion chromatography–conductivity detection (IC-CD – for the final determination). Mean recoveries of...

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• A solution of the integrated µBIST for functional and diagnostic testing in mixed-signal electronic embedded systems

  Publikacja

  • D. Załęski
  • R. Zielonko

  - Rok 2013

  Main problem of the paper is testing of analog circuits and blocks in mixed-signal electronic embedded systems (EESs), using the built-in self-test (BIST) technique. The integrated mBIST based on reusing signal blocks already present in an EES, such as processors, memories, ADCs, is presented. The novelty of the solution is the extended functionality of the mBIST. It can perform 2 testing functions: functional testing and fault...

• A Strategy to Locate Fixed Points and Global Perturbations of ODE’s: Mixing Topology with Metric Conditions

  Publikacja

  • G. Graff
  • A. Ruiz-Herrera

  - Journal of Dynamics and Differential Equations - Rok 2013

  In this paper we discuss a topological treatment for the planar system z' = f (t, z) + g(t, z) where f and g are T -periodic in time and g(t, z) is bounded. Namely, we study the effect of g(t, z) in two different frameworks: isochronous centers and time periodic systems having subharmonics. The main tool employed in the proofs consists of a topological strategy to locate fixed points in the class of orientation preserving embedding...

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Rok 2021

• A Simulation Model for Risk and Pricing Competition in the Retail Lending Market

  Publikacja

  • B. Kochański

  - FINANCE A UVER-CZECH JOURNAL OF ECONOMICS AND FINANCE - Rok 2021

  We propose a simulation model of the retail lending market with two types of agents: borrowers searching for low interest rates and lenders competing through risk-based pricing. We show that individual banks observe adverse selection, even if every lender applies the same pricing strategy and a credit scoring model of comparable discrimination power. Additionally, the model justifies the reverse-S shape of the response rate curve....

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• A Single-Carrier-Based Pulse-Width Modulation Template for Cascaded H-Bridge Multilevel Inverters

  Publikacja

  • C. I. Odeh
  • A. Lewicki
  • M. Morawiec

  - IEEE Access - Rok 2021

  Multiplicity of the triangular carrier signals is a criterion for the extension of sinusoidal pulsewidth modulation, SPWM, to a number of output voltage levels per phase-leg in cascaded H-bridge (CHB) multilevel inverter (MLI). Considering medium and high voltage applications where appreciable number of output voltage levels from CHB MLI is needed, commensurate high number of carrier signals in either classical level- or phase-shifted...

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• A spline-based FE approach to modelling of high frequency dynamics of 1-D structures

  Publikacja

  • A. Żak
  • W. Waszkowiak

  - COMPUTERS & MATHEMATICS WITH APPLICATIONS - Rok 2021

  In this paper a computational methodology leading to the development of a new class of FEs, based on the application of continuous and smooth approximation polynomials, being splines, has been presented. Application of the splines as appropriately defined piecewise elemental shape functions led the authors to the formulation of a new approach for FEM, named as spFEM, where contrary to the well-known NURBS approach, the boundaries...

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• A study about daylighting knowledge and education in Europe. Results from the first phase of the DAYKE project

  Publikacja

  • F. Giuliani
  • N. Sokół
  • V. R. Lo Verso
  • R. Viula
  • F. Caffaro
  • B. Paule
  • A. Diakite
  • Y. Sutter

  - Architectural Science Review - Rok 2021

  This paper presents selected results from the first stage of DAYKE (Daylight Knowledge in Europe), a 3- phase project that investigates the knowledge on daylighting in buildings among architecture students and practitioners across Europe. Subjective judgements from 561 students from 8 architecture universities in the EU, collected through two surveys in 2018. The key findings are: (i) the spatial distribution of comfort and mood...

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• A study of jet impingement cooling enhancement by concave and convex heat sink shape modifications

  Publikacja

  • M. Froissart
  • P. Ziółkowski
  • J. Badur

  - E3S Web of Conferences - Rok 2021

  The rising demand for efficient cooling technologies is a strong driver of extensive research in this area. This trend is particularly strong in turbines and microprocessors technology. Presented study is focused on the jet impingement cooling concept, which is used in various configurations for many years. The potential of the heat sink shape modification is not yet fully explored. Available literature suggests that average Nusselt...

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Rok 2009

• A sine wave delay estimator

  Publikacja

  • E. Hermanowicz
  • M. Rojewski

  - Rok 2009

  Zaprezentowano nowe rozwiązanie dyskretno-czasowego estymatora ułamkowego opóźnienia sygnału sinusoidalnego, działające w systemie z otwartą pętlą sprzężenia zwrotnego. Proponowane rozwiązanie wykorzystuje koncepcję transformowania za pomocą filtru Hilberta sygnału referencyjnego celem estymacji różnicy fazy tego sygnału względem zaszumionego sygnału odebranego o znormalizowanej (względem okresu próbkowania) częstotliwości - bardzo...

Rok 2005

• A six-ring probe for monitoring conductivity changes

  Publikacja

  • J. Wtorek
  • A. Bujnowski
  • A. Poliński
  • A. Z. Nowakowski

  - Rok 2005

  streszczenie: W pracy przedstawiono konstrukcję sondy szściopierścieniowej do monitorowania zmian immitancji. Zdefiniowano czułość sondy i przedstawiono jej rozkład dla przypadków izotropowych i anizotropowych. Teoretyczne symulacje za pomocą metody elementów skończonych zostały zweryfikowane eksperymentalnie, za pomocą specjalnie skonstruowanego zestawu pomiarowego. Zamieszczono przykładowe pomiary in vivo.

• A small-signal sound speed and parameter of non-linearity B/Ain a ternary mixture. Examples of calculations of mixture consisting of air, water and water vapor

  Publikacja

  • A. Perelomova

  - Rok 2005

  Zostało wyliczone zaburzenie entropii z dokładnością do członów nieliniowych rzędu drugiego. Jedyne założenie ograniczające, toże para wodna i powietrze są gazami doskonałymi. Ostatecznie,parametr nieliniowości i prędkość fali akustycznej przedstawione jako rodzinę krzywych, zależnych od trzech parametrów. Przedstawiono ilustrację tych zależności.

• A stochastic approach to the problem of bearing capacity by the method of characteristics

  Publikacja

  • J. Przewłócki

  - Rok 2005

  W pracy omówiono zagadnienie nośności granicznej podłoża o własnościach losowych, przy obciążeniu od spoczywającego na nim fundamentu. Zaproponowano stochastyczną modyfikację metody charakterystyk bazującej na metodzie różnic skończonych. Analizowano zagadnienia związane z dyskretyzacją losowego ośrodka gruntowego, symulacją pola losowego oraz ze zbieżnością i stabilnością rozwiązania. Przedstawione podejście umożliwiło uwzględnienie...

Rok 2011

• A solution of non-linear differential problem with application to selected geotechnical problems

  Publikacja

  • A. Milewska

  - Archives of Civil Engineering - Rok 2011

  A certain non-linear differential equation containing a power of unknown function being the solution is considered with application to selected geotechnical problems. The equation can be derived to a linear differential equation by a proper substitution and properties of the operations G and S.

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• A spice equivalent circuit for modeling the performance of dual frequency echo-sounder

  Publikacja

  • M. Moszyński
  • W. Lis

  - HYDROACOUSTICS - Rok 2011

  The paper presents novel network equivalent circuit of piezoceramic circular disc transducers that takes into account thickness and radial mode of vibrations. The starting point of the analysis is 4-port description of circular disc element representing the solution of wave equation set in radial and thickness directions. The approximate solution for harmonic case is represented in the form of 4x4 matrix, which is synthesised and...

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Rok 2018

• A Solution to Image Processing with Parallel MPI I/O and Distributed NVRAM Cache

  Publikacja

  • A. Malinowski
  • P. Czarnul

  - Scalable Computing: Practice and Experience - Rok 2018

  The paper presents a new approach to parallel image processing using byte addressable, non-volatile memory (NVRAM). We show that our custom built MPI I/O implementation of selected functions that use a distributed cache that incorporates NVRAMs located in cluster nodes can be used for efficient processing of large images. We demonstrate performance benefits of such a solution compared to a traditional implementation without NVRAM...

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• A Stabilized Complex LOBPCG Eigensolver for the Analysis of Moderately Lossy EM Structures

  Publikacja

  • M. Rewieński
  • A. Dziekoński
  • A. Lamęcki
  • M. Mrozowski

  - IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS - Rok 2018

  This letter proposes a stabilized locally optimal block preconditioned conjugate gradient method for computing selected eigenvalues for complex symmetric generalized non-Hermitian eigenproblems. Effectiveness of the presented approach is demonstrated for a moderately lossy dual-mode dielectric resonator, modeled using finite-element method with higher order elements

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• A Stand for Measurement and Prediction of Scattering Properties of Diffusers

  Publikacja

  • A. Kurowski
  • D. Koszewski
  • J. Kotus
  • B. Kostek

  - Rok 2018

  In this paper we present a set of solutions which may be used for prototyping and simulation of acoustic scattering devices. A system proposed is capable of measuring sound field. Also a way to use an open source solution for simulation of scattering phenomena occurring in proximity of acoustic diffusers is shown. The result of our work are measurement procedure and a prototype of the simulation script based on FEniCS - an open source...

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• A study of a reduction of a micro- and nanometric bismuth oxide in hydrogen atmosphere

  Publikacja

  • B. J. Trawiński
  • B. Bochentyn
  • B. Kusz

  - THERMOCHIMICA ACTA - Rok 2018

  A reduction of bismuth oxide in hydrogen atmosphere was investigated. The reaction was performed with a material in various structural forms: powder: with micrometric grains, powder with nanometric grains and powder pressed into pellets. The process was performed in both isothermal and non-isothermal conditions. An activation energy of the reaction calculated with Friedman method was found to be about 85 kJ/mol for the reduction...

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Rok 2015

• A solvent selection guide based on chemometrics and multicriteria decision analysis

  Publikacja

  • M. Tobiszewski
  • S. Tsakovski
  • V. Simeonov
  • J. Namieśnik
  • F. Pena-Pereira

  - GREEN CHEMISTRY - Rok 2015

  The selection of suitable solvents is a crucially important subject in a wide range of chemical processes. This study presents a solvent selection guide where 151 solvents were assessed, including a significant number of recently reported bio-based solvents. The assessment procedure involves grouping of solvents according to their physicochemical parameters and ranking within clusters according to their toxicological and hazard...

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• A Special Section on Intelligent User Interfaces in Healthcare (IUIH)

  Publikacja

  • J. Wtorek

  - Journal of Medical Imaging and Health Informatics - Rok 2015

  A concept of interface has evolved from the first appearance in the form of a command line interface to the established use of direct manipulation or WIMP (windows, icons, menus and pointing) interfaces in nearly all applications. Intelligent user interfaces (IUI) form a subfield of Human-Computer Interaction research. Optimal human-computer interactions are defined as ones where users are able to perform complex tasks more quickly...

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• A spectroscopic study of the cis/trans-isomers of penta-2,4-dienoic acid attached to gold nanoclusters

  Publikacja

  • F. Latorre
  • J. Guthmuller
  • P. Marquetand

  - PHYSICAL CHEMISTRY CHEMICAL PHYSICS - Rok 2015

  In this theoretical work, we present a spectroscopic analysis of the cis/trans-isomers of a molecular switch, penta-2,4-dienoic acid, attached to gold clusters of different size (1, 2 and 20 gold atoms). We have simulated 4 different spectroscopic techniques: Infrared spectroscopy, normal Raman scattering, absorption spectra and resonance Raman scattering. We discuss how the position and the conformation of the molecule determine...

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• A study of the electronic states of pyrimidine by electron energy loss spectroscopy

  Publikacja

  • I. Linert
  • M. Zubek

  - CHEMICAL PHYSICS LETTERS - Rok 2015

  The electron energy loss spectra were measured in pyrimidine at the constant electron residual energy varied from 15 meV to 10 eV and in the scattering angle range 0–180°. The spectra were analysed applying an iteration fitting procedure to resolve the energy loss bands corresponding to excitation of the electronic states of pyrimidine. The vertical excitation energies of the singlet states of pyrimidine and of a number of the...

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Rok 2020

• A space-efficient algorithm for computing the minimum cycle mean in a directed graph

  Publikacja

  • P. Pilarczyk

  - Journal of Mathematics and Computer Science-JMCS - Rok 2020

  An algorithm is introduced for computing the minimum cycle mean in a strongly connected directed graph with n vertices and m arcs that requires O(n) working space. This is a considerable improvement for sparse graphs in comparison to the classical algorithms that require O(n^2) working space. The time complexity of the algorithm is still O(nm). An implementation in C++ is made publicly available at http://www.pawelpilarczyk.com/cymealg/.

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• A strong preference for the TA/TA dinucleotide step discovered for an acridine-based, potent antitumor dsDNA intercalator, C-1305: NMR-driven structural and sequence-specificity studies

  Publikacja

  • T. Laskowski
  • W. Andrałojć
  • J. Grynda
  • P. Gwarda
  • J. Mazerski
  • Z. Gdaniec

  - Scientific Reports - Rok 2020

  Triazoloacridinone C-1305, a potent antitumor agent recommended for Phase I clinical trials, exhibits high activity towards a wide range of experimental colon carcinomas, in many cases associated with complete tumor regression. C-1305 is a well-established dsDNA intercalator, yet no information on its mode of binding into DNA is available to date. Herein, we present the NMR-driven and MD-refined reconstruction of the 3D structures...

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• A Study of Cross-Linguistic Speech Emotion Recognition Based on 2D Feature Spaces

  Publikacja

  • G. Tamulevicius
  • G. Korvel
  • A. B. Yayak
  • P. Treigys
  • J. Bernataviciene
  • B. Kostek

  - Electronics - Rok 2020

  In this research, a study of cross-linguistic speech emotion recognition is performed. For this purpose, emotional data of different languages (English, Lithuanian, German, Spanish, Serbian, and Polish) are collected, resulting in a cross-linguistic speech emotion dataset with the size of more than 10.000 emotional utterances. Despite the bi-modal character of the databases gathered, our focus is on the acoustic representation...

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• A study of the kinetics of bismuth telluride synthesis by an oxide reduction method

  Publikacja

  • B. J. Trawiński
  • B. Bochentyn
  • M. S. Łapiński
  • B. Kusz

  - THERMOCHIMICA ACTA - Rok 2020

  The kinetics of a reduction of bismuth and tellurium oxides in a hydrogen atmosphere, leading to the formation of thermoelectric bismuth telluride is investigated. The evaluation of the reaction kinetics was based on a thermogravimetric analysis performed in non-isothermal conditions. A non-parametric analysis method and the Friedman method were used for the evaluation of the data. Additionally, for a better understanding of the...

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Rok 2012

• A Special Issue on Ubiquitous Computing in Healthcare

  Publikacja

  • J. Rumiński

  - Journal of Medical Imaging and Health Informatics - Rok 2012

  Przetwarzanie bez granic w opiece zdrowotnej jest szczególnie istotne w konteście starzejącego się społeczeństwa. W pracy przedstawiono omówienie roli przetwarzania bez granic oraz opisano powiązane dziedziny tematyczne i prezentowane w numerze specjalnym zagadnienia.

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Rok 2016

• A standard analytical method as the common good and pollution abatement measure

  Publikacja

  • M. Tobiszewski
  • F. Pena-Pereira
  • A. Orłowski
  • J. Namieśnik

  - TRAC-TRENDS IN ANALYTICAL CHEMISTRY - Rok 2016

  A standard method can be considered as a common-good “resource,” and the solution to “the commons” problems usually lies in societal self-organization. The multi-criteria decision analysis (MCDA) was applied to model complex phenomena, such as the standard selection for imidacloprid determination. In this process, the standard was self-selected by the analytical chemistry society. The results show that analytical chemistry is a...

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• A structure and design of a novel compact UWB MIMO antenna

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - Rok 2016

  In the paper, a concept and design procedure of a novel compact MIMO slot antenna is presented. In order to achieve a better filling of available space, individual antennas are constrained to a triangular shape and optimized for a reduced size. The MIMO structure is then assembled using the two of previously designed antennas in orthogonal arrangement. Surrogate-assisted numerical optimization involving variable-fidelity electromagnetic...

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• A structure and design optimization of novel compact microscrip dual-band rat-race coupler with enhanced bandwidth

  Publikacja

  • A. Bekasiewicz
  • S. Kozieł
  • W. Zieniutycz

  - MICROWAVE AND OPTICAL TECHNOLOGY LETTERS - Rok 2016

  In the letter, a topology of a novel compact wideband dual-band rat-race coupler has been presented along with its computationally efficient design optimization procedure. Reduction of the circuit size has been achieved by meandering transmission lines of the conventional circuit. At the same time, the number of independent geometry parameters has been increased so as to secure sufficient flexibility of the circuit, necessary in...

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• A structure and simulation-driven design of compact CPW-fed UWB antenna

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - IEEE Antennas and Wireless Propagation Letters - Rok 2016

  In this letter, a structure of a miniaturized ultra-wideband CPW-fed antenna and its design proce-dure are presented. The antenna is a modified version of the design previously proposed in the literature, with additional degrees of freedom introduced in order to improve the structure flexibility. The small size is achieved by executing a rigorous optimization procedure that consists of two stages: (i) smart random search carried...

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• A Study in Experimental Methods of Human-Computer Communication for Patients After Severe Brain Injuries

  Publikacja

  • A. Czyżewski
  • B. Kostek

  - Rok 2016

  Experimental research in the domain of multimedia technology applied to medical practice is discussed, employing a prototype of integrated multimodal system to assist diagnosis and polysensory stimulation of patients after severe brain injury. The system being developed includes among others: eye gaze tracker, and EEG monitoring of non-communicating patients after severe brain injuries. The proposed solutions are used for collecting...

Rok 2022

• A state of the art review on the use of fungi in biofiltration to remove volatile hydrophobic pollutants

  Publikacja

  • M. Marycz
  • A. Brillowska-Dąbrowska
  • R. Muñoz
  • J. Gębicki

  - REVIEWS IN ENVIRONMENTAL SCIENCE AND BIO-TECHNOLOGY - Rok 2022

  The physical/chemical abatement of gas pollutants creates many technical problems, is costly and entails significant environmental impacts. Biological purification of off-gases is a cheap and ecologically safe way of neutralization of gas pollutants. Despite the recent advances, the main technological challenge nowadays is the purification of volatile organic compounds (VOCs) of hydrophobic character due to their low solubility...

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• A Strategy for Managing the Operation of Technical Infrastructure Based on the Analysis of “Bad Actors”—A Case Study of LOTOS Group S.A.

  Publikacja

  • T. Dziabas
  • M. Deja
  • A. T. Wiśniewska (dawniej: A. Wiśniewska)

  - Sustainability - Rok 2022

  The article covers issues related to the selection of a management strategy for the operation of technical infrastructure. It contains the approaches, methodology and a general model of the system of operation of the Maintenance Services of the LOTOS Group production company, which is an example of a large oil concern. Nowadays, an increasing aspect is put on the efficiency of individual repair processes, as well as the operation...

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Rok 2007

• A station strategy to deter backoff attacks in IEEE 802.11 LANs

  Publikacja

  • J. Konorski

  - Journal of Discrete Algorithms - Rok 2007

  Dla konstrukcji strategii zapobiegającej atakom na mechanizm odczekania w sieciach lokalnych IEEE 802.11 zastosowano wybór konfiguracji MAC sterowany przez liczniki etapów gry z losowymi wartościami początkowymi. Wykazano, że przy pewnych warunkach nałożonych na rozkady prawdopodobieństwa liczników standardowe ustawienia parametrów MAC stają się punktem doskonałej równowagi strategicznej.

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Rok 2003

• A structural study of the hydrated and the dimethylsulfoxide, N, N´-dimet-hylpropyleneurea, acetonitryle, pyridine and N,N-dimethylthioformamide solvated nickel(II) ion in solution and solid state.

  Publikacja

  • O. Kristiansson
  • I. Persson
  • D. Bobicz
  • X. Duowei

  - INORGANICA CHIMICA ACTA - Rok 2003

  Oznaczono strukturę w stanie stałym i ciekłym solwatowanego jonu niklu(II) w rozpuszczalnikach o różnych właściwościach donorowych: w wodzie, dimetylo-sulfotlenku, N,N`-dimetylopropylomoczniku, acetonitrylu, pirydynie i N,N-di-metylotioformamidzie. Stwierdzono, że nikiel(II) tworzy przede wszystkim sześciokoordynacyjne solwaty (woda, acetonitryl, DMTF). Jako solwat pięciokoordynacyjny istnieje tylko w dimetylopropylomoczniku....

Rok 2002

• A study HIPERLAN-type noncooperative medium access control setting in a wireless LAN

  Publikacja

  • J. Konorski

  - SYSTEMS SCIENCE - Rok 2002

  Dla dostępu MAC przeanalizowano strategię określania długości transmisji w fazie eliminacji zakładając indywidualną optymalizację uzyskanego pasma komunikacyjnego. Zaproponowano różne warianty polityki wyłaniania zwycięzcy eliminacji, mające na celu wyrównanie szans stacji kooperacyjnych i niekooperacyjnych.

Rok 2024

• A study of cavitation erosion resistance of an ion nitrided titanium alloy by means of the vibration and rotating disk methods

  Publikacja

  • V. Safonov
  • A. Zykova
  • J. Steller
  • M. Szkodo
  • G. Gajowiec
  • J. Chmiel
  • A. Varhoshkov

  - Journal of Physics : Conference Series - Rok 2024

  In this work, a comparative analysis of the cavitation erosion resistance of the Ti– 6.7Al–2.5Mo–1.8Cr–0.5Fe–0.25Si alloy (known as brand VT3-1) before and after lowtemperature ion nitriding is carried out. Two test methods were applied, using vibrative (ASTM G-32) and rotating disk rigs, respectively. The kinetic dependences of the erosive destruction of samples of titanium alloy VT3-1 in the initial state, after ion nitriding...

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Rok 2008

• A study of chirality in bis(1,2-dimethoxyethane-κ^2 O,O')sodium bis(tri-tert-butoxysilanethiolato-κ2O,S)sodate

  Publikacja

  • J. Chojnacki
  • A. Ciborska
  • W. Wojnowski

  - ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS - Rok 2008

  Praca prezentuje analizę samoorganizacji związku kompleksowego z prostszych jonów na przykładzie silanotiolanosodanu bis(dimetoksyetan)sodu. Stwierdzono, że w anionie (RS)2Na- obie grupy tri-tert-butoksysilanotiolanowe mają tę samą skręcalność - obie (P) lub obie (M). Zjawisko to występuje we wszystkich znanych sodanach i litanach zawierających grupę (tert-BuO)3SiS.

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Rok 2004

• A study of electron impact excitation of molecular oxygen at a scattering angle of 180 st.

  Publikacja

  • I. Linert
  • G. C. King
  • M. Zubek

  - Rok 2004

  Zbadano wzbudzenie tlenu cząsteczkowego w zderzeniu z elektronem dla rozproszenia do tyłu, pod kątem 180 st. Do pomiarów wykorzystano nowe źródło lokalnego pola magnetycznego o geometrii stożkowej.

Rok 2017

• A STUDY OF THE ORIGINAL AND CONTEMPORARY LAYOUT OF NAZAR GARDEN WITHIN THE CITY OF SHIRAZ, IRAN

  Publikacja

  • N. Hassas

  - Rok 2017

  Shiraz city was famous for its beautiful gardens that shaped its landscape. Nazar Garden,with its buildings was designed by Karim Khan in the 18th c. The aim of the research wasto compare the size and layout of the Garden during the Zand Period with its contemporary shape. The research was based on literature sources, available plans and an on-sitesurvey. 

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• A study of the photoelectron spectra of α-tetrahydrofurfuryl alcohol over the outer valence energy region (9–25 eV)

  Publikacja

  • M. Dampc
  • B. Mielewska
  • M. Siggel-King
  • G. C. King
  • M. Zubek

  - CHEMICAL PHYSICS LETTERS - Rok 2017

  Photoelectron spectra of α-tetrahydrofurfuryl alcohol (THFA) molecules, the threshold spectrum and spectra for constant photoelectron energies, have been measured over the photon energy range 9–25 eV. Analysis of the photoelectron spectra has allowed overlapping photoionization bands to be separated, tentatively assigned and their vertical photoionization energies to be determined. These energies are compared with existing theoretical...

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