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Gdańsk University of Technology

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Publications from the year 2019

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  • INFOGEST static in vitro simulation of gastrointestinal food digestion
    • André Brodkorb
    • Lotti Egger
    • Marie Alminger
    • Paula Alvito
    • Ricardo Assunção
    • Simon Ballance
    • Torsten Bohn
    • Claire Bourlieu-Lacanal
    • Rachel Boutrou
    • Frédéric Carrière
    • Alfonso Clemente
    • Milena Corredig
    • Didier Dupont
    • Claire Dufour
    • Cathrina Edwards
    • Matt Golding
    • Sibel Karakaya
    • Bente Kirkhus
    • Steven Le
    • Uri Lesmes
    • Adam Macierzanka
    • Alan Mackie
    • Carla Martins
    • Sébastien Marze
    • David McClements
    • Olivia Ménard
    • Mans Minekus
    • Reto Portmann
    • Cláudia Santos
    • Isabelle Souchon
    • R Singh
    • Gerd Vegarud
    • Martin Wickham
    • Werner Weitschies
    • Isidra Recio
    2019 Full text Nature Protocols

    Developing a mechanistic understanding of the impact of food structure and composition on human health has increasingly involved simulating digestion in the upper gastrointestinal tract. These simulations have used a wide range of different conditions that often have very little physiological relevance, and this impedes the meaningful comparison of results. The standardized protocol presented here is based on an international consensus developed by the COST INFOGEST network. The method is designed to be used with standard laboratory equipment and requires limited experience to encourage a wide range of researchers to adopt it. It is a static digestion method that uses constant ratios of meal to digestive fluids and a constant pH for each step of digestion. This makes the method simple to use but not suitable for simulating digestion kinetics. Using this method, food samples are subjected to sequential oral, gastric and intestinal digestion while parameters such as electrolytes, enzymes, bile, dilution, pH and time of digestion are based on available physiological data. This amended and improved digestion method (INFOGEST 2.0) avoids challenges associated with the original method, such as the inclusion of the oral phase and the use of gastric lipase. The method can be used to assess the endpoints resulting from digestion of foods by analyzing the digestion products (e.g., peptides/amino acids, fatty acids, simple sugars) and evaluating the release of micronutrients from the food matrix. The whole protocol can be completed in ~7 d, including ~5 d required for the determination of enzyme activities.

  • Informatyka medyczna jako dyscyplina naukowa i usługowa
    • Antoni Nowakowski
    2019

    Omówiono zakres tematyczny części I monografii, trochę historii i zakres działalności promocyjnej, publikacyjnej, normalizacyjnej i edukacyjnej w informatyce medycznej.

  • INFORMATYKA MEDYCZNA W PROGRAMACH NAUCZANIA
    • Antoni Nowakowski
    • Jacek Rumiński
    • Mariusz Kaczmarek
    2019

    Rozdział prezentuje zakres realizacji informatyki medycznej w programach nauczania na krajowych uczelniach. Po wstępie historycznym, skupia się na omówienie informatyki medycznej jako wydzielonego obszaru kształcenia. Następnie prezentuje jako przykład zagadnienia związane z kształceniem studentów w tym obszarze na Politechnice Gdańskiej.

  • Injectable poloxamer/graphene oxide hydrogels with well‐controlled mechanical and rheological properties
    • Elaheh Rohani
    • Henri Vahabi
    • Krzysztof Formela
    • Mohammad Saeb
    • Sabu Thomas
    2019 POLYMERS FOR ADVANCED TECHNOLOGIES

    Although significant progress has been made in the design and application of injectable hydrogels for biomedical applications, concurrent control of rheological and mechanical properties of injectable hydrogels has remained as an open challenge to the researchers. In this work, we introduce and put into practice a photo‐curable poloxamer (also known as Pluronic)/graphene oxide (Plu/GO) injectable hydrogel with well‐controlled rheological and mechanical properties. Acrylate group was anchored to hydrogel structure to endow photo‐crosslinking ability through decelerating degradation rate of poloxamer hydrogels after injection. It was found that the modified Plu remains stable in biological media for a long‐term period without significant weight loss. Rheological properties of hydrogels were also carried out as essential prerequisite for an ideal injectability via frequency sweep, flow curve, recovery, and yield stress before and after modification, signifying shear‐thinning behavior of Plu/GO hydrogels with high recoverability. The viscosity of shear‐thinning‐like hydrogels dropped at higher shear stress, which facilitated injection process. Moreover, mechanical behavior of Plu was optimized by manipulating the content of Plu, degree of modification with reactive precursor, curing, and particularly incorporation of GO without deteriorating effects on rheological behavior of Plu.

  • Injury Prediction Models for Onshore Road Network Development
    • Wojciech Kustra
    • Joanna Żukowska
    • Marcin Budzyński
    • Kazimierz Jamroz
    2019 Full text Polish Maritime Research

    Integrating different modes of transport (road, rail, air and water) is important for port cities. To accommodate this need, new transport hubs must be built such as airports or sea ports. If ports are to grow, they must be accessible, a feature which is best achieved by building new roads, including fast roads. Poland must develop a network of fast roads that will provide good access to ports. What is equally important is to upgrade the network of national roads to complement fast roads. A key criterion in this case is to ensure that the roads are efficient to minimise time lost for road users and safe. With safety standards and safety management practices varying vastly across the EU, Directive 2008/96/EC of the European Parliament and of the Council was a way to ensure that countries follow procedures for assessing the impact of road projects on road safety and conduct road safety audits, road safety management and road safety inspections. The main goal of the research was to build mathematical models to combine road safety measures, i.e. injury density (DI) and accident density (DA), with road and traffic factors on longer sections, all based on risk analysis. The practical objective is to use these models to develop tools for assessing how new road projects will impact road safety. Because previous research on models to help estimate injuries (I) or injury density (DI) on long sections was scarce, the authors addressed that problem in their work. The idea goes back to how Poland is introducing procedures for assessing the effects of infrastructure on safety and developing a method to estimate accident indicators to support economic analysis for new roads, a solution applied in JASPERS. Another reason for the research was Poland’s insufficient and ineffective pool of road safety management tools in Poland. The paper presents analyses of several models which achieved satisfactory results. They are consistent with the work of other researchers and the outcomes of previous research conducted by the authors.

  • Innovative method of localization airplanes in VCS (VCS-MLAT) distributed system
    • Szymon Wiszniewski
    2019

    The article presents the concept and the structure of the localization module. The prototype module is the part of the VCS (VCS-MLAT) localization distributed system. The device receives the audio signal transmitted in airplanes band (118 MHz – 136 MHz). Received data with the timestamps are send to the main server. The data from multiple devices estimates the localization of the airplane. The main aim of the project is the analysis of the innovative airplane localization method in the close to real environment, based on the audio signal transmitted in 118 MHz – 136 MHz band. The development work requires elaboration and implementation of the prototypes of the distributed system. This concept will increase security in civil and military aviation in the situation when the rests localization systems failed. The localization module as a part of the VCS localization system contains: motherboard with System on Chip integrated circuit, analog radiostation, GPS receiver and ADS-B receiver. The audio signal received from radiostation is sampled and send with the timestamps synchronized by the GPS module to the main server. Moreover, the verification of proper working VCS-MLAT system will be provided by ADS-B receiver. The special software in the main VCS system server is responsible for the estimation of aircraft position with the cooperation of dedicated localization modules, which are placed on monitored area. The concept of radiolocalization system based on the VCS communication structure should be considered as unique, compared to actual systems.

  • Innovative Research Into Road Restraint Systems
    • Kazimierz Jamroz
    • Krzysztof Wilde
    • Marcin Budzyński
    • Łukasz Jeliński
    • Jacek Chróścielewski
    • Stanisław Burzyński
    • Łukasz Pachocki
    2019 Full text Journal of KONBiN

    Key to understanding the needs and building road infrastructure management tools to prevent and mitigate run-off-road accidents is to identify hazards and their sources which are a result of wrong design, construction, installation and maintenance of road restraint systems [1]. Building such tools requires advanced studies with field tests, simulations and models to demonstrate the effects of selected parameters on road user safety [2]. Delivered under the Road Innovation programme, two research projects (ROSE and LifeROSE) are designed to help with that. The main aim of the pro-jects is to develop a method to help with an optimal choice of road restraint systems depending on the type and level of hazard, road class, size and structure of vehicle streams and driving condi-tions (vehicle speed) on the road. To that end a number of field tests were carried out designed to identify hazards and build a database of road elements. The article presents a general characteris-tics of the study, fieldwork and simulation and analytical tests required to meet the objectives. It also gives a detailed description of the crash tests conducted in the field for the two projects. A series of crash tests involving vehicles and barriers was carried out to assess how the selected restraint systems behaved and, as a result, to identify how selected barrier design factors and dy-namic vehicle factors affect the functional features of safety barriers under investigation.

  • INNOWACYJNA METODA WZMOCNIENIA PRZYCZÓŁKA WIADUKTU PRZY UŻYCIU INIEKCJI GEOPOLIMEROWYCH
    • Anna Banaś
    • Lech Bałachowski
    • Andrzej Kuryłowicz
    • Andrzej Kowalik
    • Agnieszka Poteraj - Oleksiak
    • Cezary Witas
    2019 Full text

    W obecnych czasach szybki rozwój infrastruktury i nowoczesnych technologii niejednokrotnie narzuca projektantom oraz wykonawcom takie rozwiązania, aby prowadzone roboty budowlane, były jak najmniej uciążliwe dla uczestników ruchu i jak najmniej ingerowały w system komunikacyjny. Dotyczy to zarówno budowy nowych obiektów jaki i remontu obiektów już istniejących. W niniejszej pracy przedstawiono nowatorską koncepcję remontu wiaduktu w ciągu Drogi Krajowej nr 12 nad torami PKP w miejscowości Podbór. Został on wybudowany w latach 50-tych jako żelbetowa rama. Problemem, który występował podczas eksploatacji obiektu i prowadził do potrzeby pilnej oraz jak najmniej inwazyjnej jego naprawy było nadmierne osiadanie nasypu za przyczółkiem. Spowodowało ono przemieszczenie urządzenia dylatacyjnego aż o 30 mm a tym samym prowadziło do jego uszkodzenia. Pierwszy raz w Polsce wykonano wzmocnienie przyczółka wiaduktu przy użyciu iniekcji geopolimerowych, które w znaczący sposób ograniczyło czas przeznaczony na wprowadzane ograniczenia w ruchu kołowym, a tym samym skróciło czas samej inwestycji. Zastosowanie nowatorskiej technologii pozwoliło na prowadzenie robót, tak aby były one jak najmniej uciążliwe dla uczestników ruchu. W standardowym podejściu, wymiana gruntu nasypowego i ponowne zagęszczenie, wymagałoby wprowadzenia zamknięć ruchu na całym odcinku na minimum trzy miesiące, znacząco utrudniając komunikację.

  • Innowacyjne metody obróbki powierzchni płaskich na docierarkach
    • Adam Barylski
    2019

    Przedstawiono charakterystykę innowacyjnej technologii obróbki powierzchni płaskich i płasko-równoległych na docierarkach jedno- i dwutarczowych. Zamieszczono studium przypadku obejmującego obróbkę elementów ceramicznych i wykonanych z węglików spiekanych, analizując jakość szlifowanych powierzchni i czasochłonność operacji oraz koszty obróbki elementów płaskich w układzie dwutarczowym.

  • In-plane shear nonlinearity in failure behavior of angle-ply laminated shells
    • Agnieszka Sabik
    2019 COMPOSITE STRUCTURES

    The paper concerns the progressive failure analysis of laminates with the in-plane shear nonlinearity accounted for.The nonlinear shear response of the layer is described by the constitutive relation treating the stresses as a function of strains. Thus it can be easily incorporated into the displacement-based FEM codes. The brittle failure mechanisms of the fibers and the matrix of the layer are recognized with the use of the Hashin criterion. The model is implemented into the non-commercial FEM program for the analysis of multifold shells which is based on the 6-parameter nonlinear shell theory of the Cosserat type.

  • In-situ Cu-doped MnCo-spinel coatings for solid oxide cell interconnects processed by electrophoretic deposition
    • A Sabato
    • Sebastian Molin
    • H. Javed
    • E Zanchi
    • A Boccaccini
    • F Smeacetto
    2019 CERAMICS INTERNATIONAL

    The Cu doping of the Mn–Co spinel is obtained “in-situ” by electrophoretic co-deposition of CuO and Mn1.5Co1.5O4 powders and subsequent two-step reactive sintering. Cu-doped Mn1.5Co1.5O4 coatings on Crofer22APU processed by electrophoretic co-deposition method are tested in terms of long term oxidation resistance and area specific resistance tests up to 3600 h. The introduction of Cu in the spinel lead to higher level of densification of coatings for all the considered aging periods at 800 °C and stabilizes the cubic phase of the Mn1.5Co1.5O4 spinel. Corrosion rate of the Cu-doped Mn1.5Co1.5O4 coated Crofer22APU is ∼10x lower than for the uncoated Crofer22APU. The stabilization of the cubic phase due to Cu doping, which reduces the extent of the tetragonal-cubic phase transition and limits possible thermal stresses due to mismatch of coefficients of thermal expansion or volume changes, is reviewed and discussed by means of electrical conductivity measurements together with diffraction patterns and elemental analyses. These novel electrophoretic co-deposited Cu-doped MnCo spinel coatings represent an innovative approach to obtain coatings with higher density and have future applications in the view of reaching lower rates of Cr evaporation form the steel.

  • In-situ monitoring of electropolymerization processes at boron-doped diamond electrodes by Mach-Zehnder interferometer
    • Michał Sobaszek
    • Marcin Strąkowski
    • Łukasz Skowroński
    • Siuzdak Katarzyna
    • Sawczak Mirosław
    • Igor Własny
    • Andrzej Wysmołek
    • Aleksandra Wieloszyńska
    • Jerzy Pluciński
    • Robert Bogdanowicz
    2019 Full text SENSORS AND ACTUATORS B-CHEMICAL

    In this work, the Mach-Zehnder interferometer was designed to monitor the electrochemical processes conducted at boron-doped diamond electrode surface. The diamond electrodes were synthesized via Microwave Plasma-Assisted Chemical Vapor Deposition on optical grade quartz glass. The achieved transmittance in working are of diamond electrodes reached 55 %. A cage system-based Mach-Zehnder interferometer was used which allowed the insertion of thin-layer electrochemical cells. Electrochemical studies were carried out in a thin-layer working cell. The application of such setup, allows to combine optical monitoring of surface of the working electrode during electrochemical measurements, electropolymerization or surface modification. The conducted investigation shows that during surface modification by melamine the phase shift is up to 0.0328 μm−1. The aforementioned set up can be applied for in situ monitoring of surface modifications with various compounds, and to detect organic substances whose oxidation or reduction products absorb onto the electrode surface.

  • Instalacja artystyczna "W sztuce lubię: romantyzm, poezję i figle"
    • Patryk Różycki
    2019

    Instalacja artystyczna "W sztuce lubię: romantyzm, poezję i figle" instalacja z 70 koszul męskich różnego koloru, wraz z wideo wyświetlanym na suficie. Wystawa w Instytucie Cybernetyki Sztuki.

  • Installation of Compensators in the Power System Transmission Grid
    • Ryszard Zajczyk
    • Robert Kowalak
    • Artur Zbroński
    2019 Full text Acta Energetica

    The article discusses issues of reactive power compensation in transmission grids, with particular focus on the selection of compensator locations and basic parameters. Attention was focused on modern power electronics systems that ensure full automatic compensator adjustment to voltage or power criteria.

  • Installation of GNSS receivers on a mobile railway platform – methodology and measurement aspects
    • Paweł Dąbrowski
    • Cezary Specht
    • Władysław Koc
    • Andrzej Wilk
    • Krzysztof Czaplewski
    • Krzysztof Karwowski
    • Mariusz Specht
    • Piotr Chrostowski
    • Jacek Szmagliński
    • Sławomir Grulkowski
    2019 Full text Zeszyty Naukowe Akademii Morskiej w Szczecinie

    Determining the course of a railway track axis using satellite methods relies on ensuring the precise assembly of GNSS receivers in dedicated measuring devices. Depending on the number of receivers, solutions that are based on placing the apparatus directly above the railway track axis (as well as in eccentric positions) are used to indirectly obtain data to form the basis of the desired results. This publication describes the installation of five GNSS receivers on a mobile measuring platform as part of the InnoSatTrack project. The methodology and the procedure of the geodetic measurements required to obtain the geometrical configuration of the measuring apparatus, specified in the technical project, are presented. The publication presents the principles of total station measurement methods as well as the steps taken to achieve precise results from staking out. The process of acquiring the same configuration of the GNSS receivers, based on the geometry of the squares on the two measuring platforms that were used in the research, has been shown. The final determination of the position of the receivers did not exceed an error of 0.010 m with an average error of 0.003 m, despite the occurrence of mounting difficulties. The results have demonstrated the high credibility and effectiveness of the presented solution.

  • Integrated approach for functional safety and cyber security management in maritime critical infrastructures
    • Marcin Śliwiński
    • Emilian Piesik
    2019 Full text Journal of Polish Safety and Reliability Association, Summer Safety and Reliability Seminars

    The work is devoted important issues of the management in maritime critical infrastructure of functional safety analysis, in particular the safety integrity level (SIL) verification of safety functions to be implemented within the distributed control and protection systems with regard to cyber security aspects. A method based on quantitative and qualitative information is proposed for the SIL (IEC 61508, 61511) verification with regard of the evaluation assurance levels (EAL) (ISO/IEC 15408), the security assurance levels (SAL) (IEC 62443), and the number of protection rings described in the SecureSafety (SeSa-SINTEF) methodology. The proposed approach will be composed of the following items: process and procedure based safety and cyber security management, integrated safety and security assessment of industrial control system (ICS) of the maritime critical infrastructure. Proposed methodology is illustrated on case study that based on the part of installation critical maritime infrastructure..

  • INTEGRATED FUNCTIONAL SAFETY AND CYBERSECURITY ANALYSIS METHOD FOR SMART MANUFACTURING SYSTEMS
    • Kazimierz Kosmowski
    • Marcin Śliwiński
    • Jan Piesik
    2019 Full text TASK Quarterly

    This article addresses integrated functional safety and cybersecurity analysis with regard to: the generic functional safety standard IEC 61508 and the cyber security standard IEC 62443 concerning an industrial automation and control system (IACS). The objective is to mitigate the vulnerability of information technology (IT) and operational technology (OT) systems, and reduce relevant risks taking into account a set of fundamental requirements (FRs). A method is proposed for determining and verifying the performance level (PL) or the safety integrity level (SIL) of defined safety functions, and then validating these levels depending on the security level (SL) of a particular domain, e.g. a safety related control system (SRCS). The method is general in the sense that it is based on risk graphs prepared for individual risk and/or societal/group risk with regard to the criteria defined.

  • Integrated Photocatalytic Advanced Oxidation System (TiO2/UV/O3/H2O2) for Degradation of Volatile Organic Compounds
    • Andre Fernandes
    • Michał Gągol
    • Patrycja Makoś
    • Javed Ali
    • Grzegorz Boczkaj
    2019 Full text SEPARATION AND PURIFICATION TECHNOLOGY

    Several advanced oxidation processes (AOPs) including photocatalytic processes were studied for effective treatment of complex model wastewater containing a wide variety of VOCs. The studies revealed synergistic effects of TiO2 based processes for improved degradation of the VOCs. A peroxone combined with TiO2/UV system (TiO2/UV/O3/H2O2) with a ratio between the oxygen source from the oxidant to chemical oxygen demand (COD) of the model wastewater (rox) of 0.5 and 100 mgTiO2/L was the optimal process. TiO2 revealed to be economically reasonable to be used in TiO2/UV/H2O2 and TiO2/UV/O3/H2O2 photocatalytic technologies for efficient and fast (100 min) degradation of VOCs with significantly low amounts of chemicals. Developed system provide high effectiveness with low treatment cost, which in case of most VOCs studied provide satisfactory effects in 15 min. of treatment process with 4 $/m3 of process costs. The technologies are promising in degradation and purification in several types of industrial effluents with a high VOCs content.

  • Integration, Processing and Dissemination of LiDAR Data in a 3D Web-GIS
    • Marek Kulawiak
    • Marcin Kulawiak
    • Zbigniew Łubniewski
    2019 Full text ISPRS International Journal of Geo-Information

    The rapid increase in applications of Light Detection and Ranging (LiDAR) scanners, followed by the development of various methods that are dedicated for survey data processing, visualization, and dissemination constituted the need of new open standards for storage and online distribution of collected three-dimensional data. However, over a decade of research in the area has resulted in a number of incompatible solutions that offer their own ways of disseminating results of LiDAR surveys (be it point clouds or reconstructed three-dimensional (3D) models) over the web. The article presents a unified system for remote processing, storage, visualization, and dissemination of 3D LiDAR survey data, including 3D model reconstruction. It is built with the use of open source technologies and employs open standards, such as 3D Tiles, LASer (LAS), and Object (OBJ) for data distribution. The system has been deployed for automatic organization, processing, and dissemination of LiDAR surveys that were performed in the city of Gdansk. The performance of the system has been measured using a selection of LiDAR datasets of various sizes. The system has shown to considerably simplify the process of data organization and integration, while also delivering tools for easy discovery, inspection, and acquisition of desired datasets.

  • Intelligent Autonomous Robot Supporting Small Pets in Domestic Environment
    • Artur Chrzanowski
    • Patryk Detko
    • Tomasz Stefański
    2019 Full text IFAC-PapersOnLine

    In this contribution, we present preliminary results of the student project aimed at the development of an intelligent autonomous robot supporting small pets in a domestic environment. The main task of this robot is to protect a freely moving small pets against accidental stepping on them by home residents. For this purpose, we have developed the mobile robot which follows a pet and makes an alarm signal when a human is approaching. A pet is recognized in images with the use of a convolutional neural network. Walls and obstacles are detected with the use of ultrasonic sensors. A control system of the robot is implemented with the use of the Jetson TX2 platform. Preliminary tests of the robot demonstrate not only usefulness of our solution but also further directions for its development.