2021 - Repozytorium publikacji - Politechnika Gdańska

Pokaż publikacje z roku

Publikacje z roku 2021

Pokaż wszystkie

Applying molecular dynamics simulation to take the fracture fingerprint of polycrystalline SiC nanosheets
- Fatemeh Molaei
- Maryam Zarghami Dehaghani
- Azam Salmankhani
- Sasan Fooladpanjeh
- S. Mohammad Sajadi
- Mohammad Esmaeili Safa
- Otman Abida
- Sajjad Habibzadeh
- Amin Hamed Mashhadzadeh
- Mohammad Saeb
2021 COMPUTATIONAL MATERIALS SCIENCE
Graphene-like nanosheets are the key elements of advanced materials and systems. The mechanical behavior of the structurally perfect 2D nanostructures is well documented, but that of polycrystalline ones is less understood. Herein, we applied molecular dynamics simulation (MDS) to take the fracture fingerprint of polycrystalline SiC nanosheets (PSiCNS), where monocrystalline SiC nanosheets (MSiCNS) was the reference nanosheet. The mechanical responses of defect-free and defective MSiCNS and PSiCNS having regular cracks and circular-shaped notches were captured as a function of temperature (100–1200 K), such that elevated temperatures were unconditionally deteriorative to the properties. Moreover, larger cracks and notches more severely decreased the strength of PSiCNS, e.g. Young’s modulus dropped to ca. 41% by the crack enlargement. The temperature rise similarly deteriorated the failure stress and Young's modulus of PSiCNS. However, the stress intensity factor increased by the enlargement of the crack length but decreased against temperature. We believe that the findings of the present study can shed some light on designing mechanically stable nanostructures for on-demand working conditions.
Applying response surface method to optimize the performance of a divergent-chimney solar power plant
- Behrouz Adibimanesh
- Mohammad Bagher Ayani
- Hojjat Khozeymeh-Nezhad
- Sylwia Polesek-Karczewska
2021 Pełny tekst Sustainable Energy Technologies and Assessments
One of the effective tools to generate electricity from solar energy is Divergent-chimney solar power plant (DSPP). Divergent and cylindrical chimneys of solar power plants have different performances considering turbine pressure drop ratio (ft). For the first time, the divergent angle (DA) and solar radiation (SR) interaction effects on 〖ft〗_opt are discussed through applying the Computational Fluid Dynamics (CFD) and Response Surface Method (RSM). FLUENT software is employed to perform 2D axisymmetric numerical stimulation for the Manzanares prototype. The DA, SR, and ft with ranges of 0°-3°, 200-800 W/m2, and 0.2-0.9 are considered, respectively, in the RSM optimization. The outcomes denote that the amount of 〖ft〗_optvaries from 0.71 to 0.89 continuously, and it is related inversely to the DA and directly to the SR. The maximum efficiency 〖(η〗_max) is obtained at 〖ft〗_opt, for different SRs and DAs. It is concluded that the η_max is enhanced from 0.42% to 0.50%, achieved by increasing the DA and SR values. Furthermore, the quadratic correlation of the 〖ft〗_opt and η_max in terms of DA and SR parameters are provided. Therefore, the consequences of this research would be a suitable resource for designing optimum turbines for the DSPPs.
Approval of an Arrangement in the Restructuring Proceedings and the Financial Condition of Companies Listed on the Stock Exchanges in Warsaw. Is There Any Relationship?
- Błażej Prusak
- Paweł Galiński
2021 Pełny tekst Journal of Risk and Financial Management
This paper attempts to identify the financial indicators differentiating companies that are insolvent or at risk of insolvency and have successfully entered into an arrangement with their creditors from those that have not. In addition, a two-factor model for predicting the odds of an arrangement has been proposed. The research was conducted using a population of companies listed on stock exchanges in Warsaw that initiated restructuring proceedings between October 2004 and 31 December 2020. Binary logistic regression was used as the research method. The research shows that the financial health of public companies in Poland, as measured by various financial indicators, has little impact on the effectiveness of a debtor–creditor arrangement. The main measure showing discriminatory features between groups of successful and unsuccessful entities is the share of shortterm liabilities in total liabilities. A statistically significant influence was also recorded for the indicator showing the share of short-term receivables in the total assets. Furthermore, a statistically significant discriminatory power for both groups was recorded for the indicator showing the ratio of inventories to sales revenue. However, in this situation the selection of this measure was due to the industry diversity of the research population. The identification of these determinants and the proposed model may help courts and supervisors to divide insolvent companies into those that should be subject to liquidation or restructuring procedures at an early stage of the proceedings. Consequently, this can significantly reduce the direct and indirect costs of implementing bankruptcy proceedings.
Appunti di corporate governance
- Alessandro Minichilli
- Fabio Quarato
- Luciano Segreto
2021
Il libro pone la proprietà al centro di tutte le scelte rilevanti che l’impresa compie: in particolare affronta il «problema» del governo il tema della corporate governance dalla prospettiva della proprietà e in un’accezione più ampia e articolata rispetto agli studi di matrice anglosassone. In questo contesto, si analizza il tema delle relazioni tra proprietà, governo corporate governance e strategia corporate delle imprese, con un duplice obiettivo. Da una parte, si tratta di individuare le relazioni di coerenza tra l’assetto di governance dell’impresa e i suoi risultati, in ragione della centralità che questa assume rispetto a molte delle scelte strategiche che le imprese compiono. Dall’altra, l’obiettivo è quello di considerare le possibili varianti allo “schema base”, andando a investigare il ruolo di proprietà, governo e direzione in ottica contingency, ossia nei diversi tipi di impresa. Nello specifico, vengono analizzate le imprese le public companies, le imprese multinazionali (multi-national enterprises), quelle a controllo statale (state-owned enterprises), e soprattutto le imprese a controllo familiare. La seconda parte del lavoro analizza, in una serie di paesi i sistemi economici, i modelli di capitalismo, le diverse culture economiche, i condizionamenti storici, giuridici e istituzionali e il loro ruolo nel definire il tipo di corporate governance che si è affermato
Aqueous Molybdate Provides Effective Corrosion Inhibition of WE43 Magnesium Alloy in Sodium Chloride Solutions
- Dmitry Kharitonov
- Małgorzata Zimowska
- Jacek Ryl
- Artur Zieliński
- Maria Osipenko
- Janusz Adamiec
- Angelika Wrzesińska
- Per Claesson
- Irina Kurilo
2021 Pełny tekst CORROSION SCIENCE
Corrosion and corrosion inhibition of WE43 magnesium alloy were investigated in NaCl solutions containing different amounts of sodium molybdate. Electrochemical, microscopic, and spectroscopic experiments were utilized to examine the mechanism of corrosion inhibition by molybdates. Electrochemical data showed that Na2MoO4 inhibitor provides reliable inhibition at concentrations at and above 100 mM. Raman and XPS spectroscopy demonstrated that the formed surface layer consists of mixed Mo(V, IV) species. This layer provided inhibition with an efficiency of 91–99% after 24 h of exposure. A two-step oxidation-reduction mechanism of corrosion inhibition of the WE43 alloy by aqueous molybdates was proposed
Architecture in the field of art on the example of author’s realizations
- Agnieszka Kurkowska
2021 Pełny tekst Architectus
The aim of the article was to show the place of architecture in the space of art on the example of original projects. In the author's opinion, architecture, using an artistic object as a means of expression, influences the process of living by showing the recipient, who is an inhabitant, important values from the point of view of creating a house that ensures a good quality of life and strengthening the understanding of both various aspects of living and elements of the house structure. The text presents original intentional projects, in a way the results of research work, and presents the manner and scope of their impact on the living process. The subject of the three described projects were spatial installations using, in two cases, ideological architectural sculptures as an artistic medium. All the projects had home and habitation as their leading themes. Their task was to recall memories, strengthen the sense of identification, or recall the values supporting the said dwelling. During the research, ideological architectural sculptures were placed in the natural landscape of Kashubia and in a block of flats. Appropriate photographic and descriptive documentation was made, constituting the basis for work according to the analytical and comparative method. An attempt was also made to conduct a survey of project participants and recipients. The article not only presents original attempts, the considerations contained in it may also inspire non-obvious activities, combining science and art, indicating the applicative nature of the first and the essence of the second.
Architecture of ecumenical spaces in public buildings in the 21st century: Links among the architecture of multi-faith spaces, their names, and the functions they serve in Polish airports
- Agnieszka Szuta
2021 Pełny tekst Frontiers of Architectural Research
This study explores the architecture and arrangement of prayer spaces in public buildings. It examines whether Polish airports have prayers spaces and whether a correlation exists between the name (e.g., “multi-faith space,” “place of prayer,” and “place of focus”) and design. The study is supported by analyses of ecumenical spaces, which have recently been brought into service andwhere a visible symbiosis exists between their names and functions. This study includes in situ investigations and is conducted based on awide range of literature, statistical data, comparativemethods, and logical reasoning. This study may provide an important indication for countries that are only beginning to face a design problem concerning architecture of multi-faith spaces.
Architektura zintegrowana z zielenią. Szpalery drzew liściastych jako ochrona przeciwsłoneczna budynków
- Justyna Janiak
2021 Pełny tekst
Praca dotyczy integracji drzew i architektury jako formy ochrony przeciwsłonecznej budynku w zabudowie miejskiej. Wykorzystanie zieleni wysokiej jako elementu zacieniającego zabudowę zbadano na przykładzie wybranego układu, tj. ulicy wraz ze szpalerem drzew liściastych wzdłuż każdej z pierzei przy uwarunkowaniach wilgotnego klimatu kontynentalnego. W analizie nasłonecznienia elewacji osłoniętej przez roślinne elementy zacieniające uwzględniono różne warianty odległości zadrzewień od ścian w modelach ulicy o orientacji wschód-zachód i północ-południe oraz o parametrach proporcji H/W równych: 0,2; 0,4; 0,6; 1 i 2. Badania układu wykonano w oparciu o numeryczne metody symulacyjne z wykorzystaniem komponentu godzin nasłonecznienia, który jest dostępny w nakładce Ladybug Tools programu Rhinoceros® 6. Na podstawie otrzymanych wyników stwierdzono, że szpalery drzew liściastych (o badanych parametrach) mogą pełnić rolę rozwiązania alternatywnego bądź uzupełniającego do systemów zacieniających zintegrowanych z budynkami. Skuteczność zieleni w tym zakresie zależy od relacji geometrycznych między zabudową a drzewami oraz od geometrii i orientacji tego modelu względem świata. W pracy przedstawiono również metodę modelowania oraz oceny układów roślinno-architektonicznych z drzewami pod kątem ochrony przeciwsłonecznej zabudowy, którą można wykorzystać jako narzędzie wspomagające projektowanie.
Arctic Freshwater Environment Altered by the Accumulation of Commonly Determined and Potentially New POPs
- Klaudia Kosek
- Marek Ruman
2021 Pełny tekst Water
Chemical composition of Arctic freshwater ecosystems depends on several factors. They include characteristics of the surrounding landscape, its lithology, geomorphology, vegetation, and hydrological features, as well as accumulation of anthropogenic pollution. In the Arctic, the problem of environmental contamination is widespread. That is why research on lakes and river catch-ments in terms of their chemical composition has enjoyed increasing interest among scientists worldwide. The freshwater reservoirs of the Arctic are fragile and particularly vulnerable to the uptake of pollutants that become trapped in the water and sediments for an extended period. This review summarises selected studies of freshwater bodies in the Arctic to highlight the problem of the accumulation of pollutants in these reservoirs. Moreover, it emphasises the possible negative impact of chemical pollutants on both animal and human health.
Are deep eutectic solvents useful in chromatography? A short review
- Justyna Płotka-Wasylka
- Małgorzata Rutkowska
- Miguel de la Guardia
2021 Pełny tekst JOURNAL OF CHROMATOGRAPHY A
A literature update has been done concerning Deep Eutectic Solvents (DES) use in chromatography applications. The literature survey was based on the period from 2010 till 2020 and manuscripts reported in the data bases Web of Science and Scopus. The use of DES as mobile phase and mobile phase additives, stationary phases and solid phase modifiers and the use of DES as reaction solvents for chromatography use, were evaluated. Emphasis was placed on the differentiation of DES and Ionic Liquids (ILs) and the advanced green characteristics of the new solvents as compared with traditional organic solvents and ILs with a look into the drawbacks and future perspectives in the field of separation methods.
Arithmetic Loophole in Bell's Theorem: Overlooked Threat to Entangled-State Quantum Cryptography
- Marek Czachor
2021 Pełny tekst ACTA PHYSICA POLONICA A
Bell’s theorem is supposed to exclude all local hidden-variable models of quantum correlations. However,an explicit counterexample shows that a new class of local realistic models, based on generalized arith-metic and calculus, can exactly reconstruct rotationally symmetric quantum probabilities typical oftwo-electron singlet states. Observable probabilities are consistent with the usual arithmetic employedby macroscopic observers but counterfactual aspects of Bell’s theorem are sensitive to the choice ofhidden-variable arithmetic and calculus. The model is classical in the sense of Einstein, Podolsky,Rosen and Bell: elements of reality exist and probabilities are modeled by integrals of hidden-variableprobability densities. Probability densities have a Clauser–Horne product form typical of local realistictheories. However, neither the product nor the integral nor the representation of rotations are the usualones. The integral has all the standard properties but only with respect to the arithmetic that definesthe product. Certain formal transformations of integral expressions found in the usual proofs à la Belldo not work, so standard Bell-type inequalities cannot be proved. The system we deal with is de-terministic, local-realistic, rotationally invariant, observers have free will, detectors are perfect, hencethe system is free of all the canonical loopholes discussed in the literature
Artificial Intelligence Technologies in Education: Benefits, Challenges and Strategies of Implementation
- Mieczysław Owoc
- Agnieszka Sawicka
- Paweł Weichbroth
2021 Pełny tekst
Since the education sector is associated with highly dynamic business environments which are controlled and maintained by information systems, recent technological advancements and the increasing pace of adopting artificial intelligence (AI) technologies constitute a need to identify and analyze the issues regarding their implementation in education sector. However, a study of the contemporary literature reveled that relatively little research has been undertaken in this area. To fill this void, we have identified the benefits and challenges of implementing artificial intelligence in the education sector, preceded by a short discussion on the concepts of AI and its evolution over time. Moreover, we have also reviewed modern AI technologies for learners and educators, currently available on the software market, evaluating their usefulness. Last but not least, we have developed a strategy implementation model, described by a five-stage, generic process, along with the corresponding configuration guide. To verify and validate their design, we separately developed three implementation strategies for three different higher education organizations. We believe that the obtained results will contribute to better understanding the specificities of AI systems, services and tools, and afterwards pave a smooth way in their implementation.
Assessing business process complexity based on textual data: Evidence from ITIL IT ticket processing
- Nina Rizun
- Aleksandra Revina
- Vera Maister
2021 Pełny tekst Business Process Management Journal
Purpose This study aims to draw the attention of business process management (BPM) research and practice to the textual data generated in the processes and the potential of meaningful insights extraction. The authors apply standard natural language processing (NLP) approaches to gain valuable knowledge in the form of business process (BP) complexity concept suggested in the study. It is built on the objective, subjective and meta-knowledge extracted from the BP textual data and encompassing semantics, syntax and stylistics. As a result, the authors aim to create awareness about cognitive, attention and reading efforts forming the textual data-based BP complexity. The concept serves as a basis for the development of various decision-support solutions for BP workers. Design/methodology/approach The starting point is an investigation of the complexity concept in the BPM literature to develop an understanding of the related complexity research and to put the textual data-based BP complexity in its context. Afterward, utilizing the linguistic foundations and the theory of situation awareness (SA), the concept is empirically developed and evaluated in a real-world application case using qualitative interview-based and quantitative data-based methods. Findings In the practical, real-world application, the authors confirmed that BP textual data could be used to predict BP complexity from the semantic, syntactic and stylistic viewpoints. The authors were able to prove the value of this knowledge about the BP complexity formed based on the (1) professional contextual experience of the BP worker enriched by the awareness of cognitive efforts required for BP execution (objective knowledge), (2) business emotions enriched by attention efforts (subjective knowledge) and (3) quality of the text, i.e. professionalism, expertise and stress level of the text author, enriched by reading efforts (meta-knowledge). In particular, the BP complexity concept has been applied to an industrial example of Information Technology Infrastructure Library (ITIL) change management (CHM) Information Technology (IT) ticket processing. The authors used IT ticket texts from two samples of 28,157 and 4,625 tickets as the basis for the analysis.
ASSESSING THE POTENTIAL REPLACEMENT OF MINERAL OIL WITH ENVIRONMENTALLY ACCEPTABLE LUBRICANTS IN A STERN TUBE BEARING: AN EXPERIMENTAL ANALYSIS OF BEARING PERFORMANCE
- Jerzy Kowalski
- Wojciech Leśniewski
- Daniel Piątek
- Dominika Cuper-Przybylska
2021 Pełny tekst Polish Maritime Research
T his study compares the performance of a plain bearing, with a similar structure to a tail shaft stern bearing, lubricated with either mineral oil or an environmentally acceptable lubricant (EAL). The main characteristic of the bearing is its length/diameter ratio of <1. Measurements are carried out with the bearing operating under loads from 0.5 to 1 MPa and seven speeds ranging from 1 to 11 rev/s. The bearing lubricated with either mineral oil with a viscosity grade of 100 or an environmentally acceptable lubricant (EAL) with a viscosity grade of 100 or 150 is investigated according to the ISO standard. Bearing wear is simulated by increasing the clearance circle by 0.1 mm. According to the results obtained, the use of an EAL in place of mineral oil does not cause significant changes in the bearing performance, regardless of the value of the clearance radius. The pressure distribution in the oil film, bearing load carrying capacity, eccentricity and friction coefficient have similar values for the entire load and speed ranges considered, and the discrepancies in the results are within the range of the measurement errors. Only an increase in EAL viscosity causes significant changes in bearing performance and these changes comply with the general theory of lubrication.
Assessing the Risk in Urban Public Transport for Epidemiologic Factors
- Marcin Budzyński
- Aneta Łuczkiewicz
- Jacek Szmagliński
2021 Pełny tekst ENERGIES
Pandemics have presented new challenges for public transport organisers and operators. New diseases (e.g., influenza H1N1, severe acute respiratory syndrome—SARS, as well as, more recently, SARS-CoV-2) increase the need for new protection measures to prevent epidemic outbreaks in public transport infrastructure. The authors’ goal is to present a set of actions in the area of public transport that are adjusted to different levels of epidemic development. The goal goes back to the following question: how can the highest possible level of passenger safety be ensured and the losses suffered by urban public transport companies kept as low as possible? The sets of pro-active measures for selected epidemic scenarios presented in the article may offer support to local authorities and public transport operators. In the next steps, it is important to develop and implement tools for public transport management to ensure safety and tackle epidemic hazards.
Assessment and design of greener deep eutectic solvents – A multicriteria decision analysis
- Marta Bystrzanowska
- Marek Tobiszewski
2021 Pełny tekst JOURNAL OF MOLECULAR LIQUIDS
Deep eutectic solvents (DES) are often considered as green solvents because of their properties, such as negligible vapor pressure, biodegradability, low toxicity or natural origin of their components. Due to the fact that DES are cheaper than ionic liquids, they have gained many applications in a short period of time. However, claims about their greenness sometimes seem to be exaggerated. Especially, bearing in mind lots of data gaps for DES properties as well as their individual components. To clarify the situation on their greenness status, a comprehensive assessment of commonly used hydrogen bond acceptors and donors separately and as DES is performed. The application of multicriteria decision analysis (TOPSIS ranking) with combination of biological effect modeling for DES to rank these alternatives according to greenness criteria is proposed. Also traditional organic solvents and ionic liquids as greenness reference points for better understanding are introduced. The ranking results show that many DES, which are synthetized by mixing sugars alcohols, alcohols, sugars and amides are promising environmentally friendly solvents, more than some imidazolium-based ionic liquids. Mixtures including components with metal ions and organic acids are less green.
Assessment of Connectivity-based Resilience to Attacks Against Multiple Nodes in SDNs
- Dorabella Santos
- Amaro de Sousa
- Carmen Mas-Machuca
- Jacek Rak
2021 Pełny tekst IEEE Access
In Software Defined Networks (SDNs), the control plane of a network is decoupled from its data plane. For scalability and robustness, the logically centralized control plane is implemented by physically placing different controllers throughout the network. The determination of the number and placement of controllers is known as the Controller Placement Problem (CPP). In the regular (i.e., failure-free) state, the control plane must guarantee a given maximum delay between every switch and its primary controller and a given maximum delay between every pair of controllers. In general, these delay bounds allow multiple solutions and, so, other goals can be used to determine the best CPP solution. In this paper, we assess the connectivity-based resilience to malicious attacks against multiple network nodes of the CPP solutions obtained with three different aims: the regular state delay optimization without any concern about attacks, the regular state delay optimization taking into consideration the worst-case attacks and the resilience optimization to attacks against multiple nodes. We assess the CPP solutions considering attacks of targeted nature (when the attacker has complete knowledge of the data plane) and attacks of non-targeted nature (i.e., random and epidemic attacks). We present computational results providing an analysis of the CPP solutions to the different types of attacks. The main conclusion is that the connectivity-based resilience between the different CPP solutions strongly depends on the network topology, the regular state delay bounds and the type of attacks. Finally, we provide insights on how SDN operators can consider the conducted assessment when deciding the controller placements in their networks.
Assessment of Corrosive Behaviour and Microstructure Characterization of Hybrid Friction Stir Welded Martensitic Stainless Steel
- Dhanesh G. Mohan
- S Gopi
- Jacek Tomków
- Shabbir Memon
2021 Pełny tekst Advances in Materials Science
This study examined the effect of induction heating on the microstructure and corrosion characteristics of hybrid friction stir welded AISI 410 stainless steel. Five joints have been produced with different friction stir welding parameters like welding speed, spindle speed, plunge depth, and induction power. Their microstructures were evaluated using a scanning electron microscope, and chemical composition was examined using energydispersive X-ray spectroscopy (EDX). The rate of corrosion was found out via the weight loss method in a 1 M HCL solution. The hybrid friction stir welding method used for this work is induction assisted friction stir welding; the results show that this method could produce sound AISI 410 stainless steel Joints. The experiment results show that the joint made at a spindle speed of 1150 rpm, welding speed 40 mm/min, plunge depth 0.5 mm, and in-situ heat by induction 480°C show a better corrosion resistance property with a fine grain structure.
Assessment of diversity and composition of bacterial community in Sludge Treatment Reed Bed systems
- Przemysław Kowal
- Slawomir Ciesielski
- Martyna Godzieba
- Karolina Fitobór
- Magdalena Gajewska
- Katarzyna Kołecka
2021 Pełny tekst SCIENCE OF THE TOTAL ENVIRONMENT
Due to their low emission of odours and lack of the need to apply additional chemical agents, sludge treatment reed beds (STRBs) constitute an economically feasible and eco-friendly approach to sewage sludge management. Correctly designed and operated STRBs ensure effective reduction of the dry matter content coupled with the mineralisation of organic compounds. Successful operation of STRBs relies on complex interactions between the plants and microorganisms responsible for the decomposition of organic matter and nutrient cycling. While the biocenoses of wetland systems dedicated to wastewater treatment have been intensively investigated, in the case of sludge treatment applications, there is a deficit of available microbial data. The aim of this study was to explore the diversity and spatial distribution of the bacteria in three distinct STRBs which differ in maturation and feeding patterns. Analyses of the dry mass and organic matter content showed the general trend of the sludge stabilisation processes advancing through the bed depth, with the best performance in the Matured Continuous Feed (MCF) bed being noted. Samples from the MCF bed showed the statistically greatest biodiversity in relation to the other beds. Moreover, increased biodiversity of microorganisms was observed on the surface of the STRBs and the bottom zone of the MCF equipped with a passive aeration system, which proves the application of such solutions in order to enhance the performance of the process. The results of 16S rRNA gene sequencing revealed that Bacteroidetes, Proteobacteria and Firmicutes contributed approximately 80% of all identified sequences read. Network analysis revealed dominant role of Bacteroidetes in the formation of interspecies coexistence patterns. Nitrospira was the most abundant organism responsible for nitrogen metabolism in the STRBs.
Assessment of Fuel Cells’ State of Health by Low-Frequency Noise Measurements
- Arkadiusz Szewczyk
- Łukasz Gaweł
- Kazimierz Darowicki
- Janusz Smulko
2021 Pełny tekst ENERGIES
We proposed applying low-frequency (flicker) noise in proton-exchange membrane fuel cells under selected loads to assess their state of health. The measurement set-up comprised a precise data acquisition board and was able to record the DC voltage and its random component at the output. The set-up estimated the voltage noise power spectral density at frequencies up to a few hundred mHz. We observed the evolution of the electrical parameters of selected cells of different qualities. We confirmed that flicker noise intensity varied the most (more than 10 times) and preceded changes in the impedance or a drop in the output DC voltage (less than 2 times). The data were observed for current loads (from 0.5 to 32 A) far from the permissible load. We deduce that the method can be utilised in industrial conditions to monitor the state of health of the selected cells by noise analysis. The method can be used in real-time when the flicker noise is measured within the range of a few Hz and requires a reasonable amount of averaging time to estimate its power spectral density. The presented method of flicker noise measurement has considerable potential for use in innovative ways of fuel cell quality monitoring.