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Publications Repository
Gdańsk University of Technology

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Publications from the year 2020

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  • Discrepancies in determination of biogenic amines in beer samples by reversed phase and hydrophilic interaction liquid chromatography coupled with tandem mass spectrometry
    • Katarzyna Nalazek-Rudnicka
    • Paweł Kubica
    • Andrzej Wasik
    2020 Full text MICROCHEMICAL JOURNAL

    Biogenic amines (BAs) are nitrogenous organic bases occurring mainly in fermented food and beverages as a result of free amino acids bacterial decarboxylation. The reversed phase liquid chromatography (RPLC) and hydrophilic interaction liquid chromatography (HILIC) based methods were compared in terms of usefulness for determination of BAs in beer samples. Analysis of BAs with the use of RPLC method were carried out after their derivatization with p-toluenesulfonyl chloride (tosyl chloride), while for HILIC one sample preparation consisted of only dilution. For RPLC method the limits of detection (LODs) and quantitation (LOQs) were in the range 0.54-4.3 ng/mL and 1.6–13 ng/mL, respectively. The obtained recoveries were from 75 to 125% with coefficient of variation (CV) less than 8%. The developed HILIC based method turned out to be less sensitive and not specific sufficiently for the determination of most BAs in native state in beer samples. In this case, the LODs and LOQs values were in the range 12-94 ng/mL and 35–290 ng/mL, respectively.The observed matrix effects during analysis of beer samples were significant enough to distort the BAs content. The obtained recoveries were often below 75% with CVs less than 11%. Finally, both developed methods were applied for analysis of BAs in samples of lager beers. Due to the low recoveries and strong influence of matrix the HILIC method could be only applied to qualitative analysis of some BAs in beer samples. Regardless of the relatively lengthy sample preparation for RPLC method (time of derivatization – 2h), it was proven that a derivatization reaction is required for such matrix as beer.

  • Discussing daylight simulations in a proposal for online daylighting education.
    • Federica Giuliani
    • Mandana Khanie, Sarey
    • Natalia Sokół
    • Niko Gentile,
    2020

    There is increasing interest concerning daylighting in the building sector. However, such knowledge is difficult to penetrate the curricula of architects and designers as existing educational programmes often do not provide sufficient training on BPS. This also leads to superficial use of daylight simulations. This paper presents a proposal for a needs-based education package on daylighting design, that mixes modular eLearning and an intensive summer school, called NLITED. The NLITED model includes modules on daylight simulation whose implementation (in eLearning key) can trigger a constructive discussion and receive valuable feedback from the Nordic community of BPS specialists.

  • Discussion of “Axisymmetric Simulations of Cone Penetration in Saturated Clay” by Diane M. Moug, Ross W. Boulanger, Jason T. DeJong, and Robert A. Jaeger
    • Jakub Konkol
    • Lech Bałachowski
    2020 Full text JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING

    N/A

  • Discussion of “CPT Evaluation of Yield Stress Profiles in Soils” by Shehab S. Agaiby and Paul W. Mayne
    • Lech Bałachowski
    2020 Full text JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING

    Veryfication of the procedure to estimate overconsolidation ratio in sands using the results of mini-cone penetration tests in centrifuge.

  • Discussion:Horizontal stress increase induced by deep vibratory compaction
    • K. Rainer Massarsch
    • Carl Wersäll
    • Bengt H. Fellenius
    • Lech Bałachowski
    • Norbert Kurek
    • Jakub Konkol
    2020 Full text PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING

    Deep compaction control of granular material using the results of field tests. The analysis include the CPTU and DMT tests terformed before and after compaction works.

  • Displacement piles - classification and methods for the calculation of bearing capacity.
    • Paweł Więcławski
    • Kazimierz Gwizdała
    2020 Full text Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

    Displacement piles belong to a group of technologies whose main idea is to install or make a pile without extracting ground material. According to definition, contained in PN-EN:1997-1:2008, displacement piles should be considered as driven, pressed in using vibrators and made with the use of spread augers. The classification of piles used so far with regard to the technology of execution is modified. An additional element is the emergence of new materials and plastics used in the construction of piles. The paper presents technological changes concerning not only the method of construction, but also the materials used. Another aspect is the methods of calculating the load-bearing capacity and settlement of piles. With acceptance for use the PN-EN:1997-1:2008 standard in 2010, it was necessary to change the approaches applied that based on many years of experience and tradition. The treatment of old methods was undertaken by defining coefficients allowing extrapolation of the load capacity from the range of critical values to the limit values. To a large extent these are empirical procedures. The main determinant in the process of designing and then verifying the load-bearing capacity of piles has been the determination of the force that causes settlement equal to 10% of the pile diameter. The best method in this case is to forecast the full load-settlement characteristics. The paper presents methods based on a hyperbolic model of the settlement curve, adopted mainly in tranformational functions, and a complex linear- exponential model, which reflects with high accuracy the cooperation of the substrate with displacement piles with a Increased base. On the basis of the collected data, a comparative analysis of particular displacement piles technologies was made. The characteristic elements of cooperation between the subsoil and piles were defined depending on the method of their execution. The usefulness of individual methods of load-bearing capacity calculation depending on the pile technology was determined.

  • Dissimilar underwater wet welding of HSLA steels
    • Jacek Tomków
    • Dariusz Fydrych
    • Grzegorz Rogalski
    2020 Full text INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY

    The high-strength low-alloy S460ML and S460N steels were chosen for underwater wet welding of dissimilar T-joints using covered electrodes. For improving the quality of joints, the temper bead welding (TBW) method was used. The application of TBW in pad welding conditions has been investigated earlier but the possibility of usage of this technique in welded joints was not analyzed. The main aim of the study was to check the influence of TBW on the hardness and structures of the heat-affected zone (HAZ) of dissimilar T-jointsmade in the underwater conditions. The experiments conducted showed that the technique used can reduce the susceptibility to cold cracking by decreasing the hardness in HAZ, which is a result of changes in its structure. The TBW technique reduced the hardness in the HAZ of the S460N steel by 40–50 HV10 and in S460ML by 80–100 HV10. It was also found that the changes in S460ML and S460N were much different, and therefore, the investigated technique can provide better results in the steel characterized by lower carbon equivalent CeIIW.

  • Dissociation of furan-2-carboxylic acid by low energy electrons
    • Mateusz Zawadzki
    • J Kočišek
    • Juraj Fedor
    2020 Full text Journal of Physics : Conference Series

    Electron attachment to molecular target can lead to a variety of negative fragment ions. We experi- mentally probe the main dissociative electron attachment channels in furan-2-carboxylic acid (C3H3O2 − COOH) - a molecular target composed of two important structural units: a furan ring and a carboxylic group. In our studies we utilise nearly mono-energetic electrons at electron energies from 0 eV up to 15 eV. Our detection setup is based on extraction lens system and quadrupole mass spectrometer, that enables measurement of the energy dependent mass-selected yields of newly formed stable anions.

  • Dissociative electron attachment to benzoic acid (C7H6O2)
    • Mateusz Zawadzki
    • P. Wierzbicka
    • J. Kopyra
    2020 Full text JOURNAL OF CHEMICAL PHYSICS

    The dissociative electron attachment (DEA) to benzoic acid (C6H5COOH) has been studied using an experimental crossed beam setup of a quadrupole mass spectrometer and a trochoidal electron monochromator. Relative partial cross sections for the DEA to produce negative ion fragments show the main channels for dissociation. The comparison of the present results with the ultraviolet photoelectron spectrum of benzoic acid [J. Meeks, A. Wahlborg, and S. P. McGlynn, J. Electron Spectrosc. Relat. Phenom. 22, 43 (1981)] implies that most DEA bands in the high energy range are due to Feshbach resonances with double occupation of diffuse Rydberg-like orbitals. The measurements are supported by density functional theory calculations of the threshold energies.

  • Dissociative photo-double-ionization of the isoxazole molecules
    • Tomasz Wąsowicz
    • Antti Kivimaki
    • Robert Richter
    2020 Synchrotron Radiation in Natural Science

    The five-membered heterocyclic rings are incorporated into a wide variety of structures that play a vital role in many biochemical processes. In particular, the isoxazole molecule appears in many bioactive compounds due to its unique ring structure that consists of one oxygen atom and one nitrogen atom at adjacent positions. The unique atomic composition and bond arrangement of isoxazole imply its specific electronic properties that may be probed by diverse spectroscopic techniques, including those utilizing synchrotron radiation. In particular, the photoelectron-photoion coincidence (PEPICO) technique provides detailed information about the presence of specific bonds, the reactivity of these molecules, as well as their electronic structure and decomposition mechanisms.

  • Do Judges’ Delegations Affect Judicial Performance? A Transition Economy Evidence
    • Przemysław Banasik
    • Sylwia Morawska
    • Piotr Staszkiewicz
    • Bartosz Witkowski
    • Richard Staszkiewicz
    2020 JUSTICE SYSTEM JOURNAL

    The aim of this study is to discern whether, by delegating judges from the court to the Ministry of Justice, the Minister of Justice influences the results of courts in terms of adjudication. The study used a unique set of data for the Polish judicial system over a period of five years. The research results indicate that there are three reasons for delegating judges. Firstly, the delegation system serves to fill staff shortages among administrative staff at the Ministry of Justice. Secondly, the delegation system allows for inefficient judges to be moved. Thirdly, the system serves as an indirect control mechanism affecting the independence of courts. The results show that delegation has a positive short-term impact on judicial performance.

  • Dobór analizy strategicznej przedsięwzięć budowlanych w aspekcie zrównoważonego rozwoju
    • Maciej Niedostatkiewicz
    • Emilia Miszewska
    2020 Full text Przegląd Budowlany

    Celem artykułu jest wskazanie najbardziej właściwej z dostępnych metod analiz strategicznych dla realizacji przedsięwzięć budowlanych oraz wykorzystanie jej do oceny czy dane zamierzenie inwestycyjne pozostaje w zgodzie z zasadami rozwoju zrównoważonego.

  • Dobór geotekstyliów i wyrobów pokrewnych pełniących funkcję zbrojenia w budownictwie komunikacyjnym – wybrane problemy inżynierskie
    • Grzegorz Horodecki
    • Angelika Duszyńska
    2020

    Charakterystyka geotekstyliów i wyrobów pokrewnych stosowanych do zbrojenia gruntu w budownictwie komunikacyjnym. Identyfikacja wyrobów na budowie. Metodyka wyznaczania wytrzymałości długoterminowej zbrojenia geosyntetycznego.

  • DOBÓR PARAMETRÓW FILTRACJI W CEPSTRUM DLA POTRZEB POPRAWY JAKOŚCI ODBIERANEGO SYGNAŁU
    • Agnieszka Czapiewska
    • Andrzej Łuksza
    • Ryszard Studański
    • Andrzej Żak
    2020 Full text Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

    W referacie zaproponowano metodę eliminacji wpływu efektu wielodrogowości poprzez analizę i filtrację odbieranego sygnału w cepstrum. Analiza taka, pozwala na wykrycie istnienia repliki (echa) sygnału nadawanego oraz odfiltrowanie tej repliki, co poprawia jakość realizowanej transmisji sygnału. W referacie zaprezentowano wyniki badan symulacyjnych.

  • Does the Use of Cell Phones and Headphones at the Signalised Pedestrian Crossings Increase the Risk of Accident?
    • Joanna Wachnicka
    • Karol Kulesza
    2020 Full text Baltic Journal of Road and Bridge Engineering

    Reduction of the number of fatalities among pedestrians remains a topical issue in Poland. For many years, this percentage has remained at around 30% of all those who were killed on the road. At the same time, there is an increase in the use of electronic devices by pedestrians and cyclists that may affect their perception when crossing the road. This can lead to traffic accidents. In order to investigate the problem, field studies were carried out and their results are presented in the article. Pilot studies on pedestrian and cyclist behaviour were carried out at three pedestrian crossings with traffic lights in Gdansk. Attention was paid to whether pedestrians and cyclists use headphones when crossing the road, whether they are talking on the phone or writing SMS. The results of the research indicate that currently in Gdańsk about 10% of unprotected traffic users use a telephone and 5% use headphones at pedestrian crossings. Most of them are young people, 70–90% of all users. Women prefer using headphones more than men. Pedestrians exhibited dangerous behaviour involving entering the road at a red light regardless of the use of telephones and headphones. Therefore, as part of the studies described, it cannot be clearly stated whether the use of telephones and headphones increases the risk of being the victim of an accident. Due to the lack of separate statistics with accidents involving mobile phones and headsets, it was not possible to analyse statistical data in this respect. At the same time, research confirmed traffic disruptions at the crossings, caused by telephone users, as indicated in literature.

  • Dom podcieniowy na Żuławach
    • Marta Koperska-Kośmicka
    2020

    Pozycja obowiązkowa dla sympatyków Żuław. Zawiera ponad 500 kolorowych fotografii i rycin na temat najbardziej rozpoznawalnych zabytków Delty Wisły – domów podcieniowych. To obszerne vademecum prezentuje historię oraz współczesność dawnych obiektów, przedstawiając je na tle wielobarwnej historii regionu. Oprócz tych najbardziej popularnych, książka opisuje także mniej znane domy, które dotychczas nie znalazły się na stronach albumów czy przewodników.

  • Domain Reduction in Hybrid Technique for Electromagnetic Wave Scattering Problems
    • Małgorzata Warecka
    • Piotr Kowalczyk
    • Rafał Lech
    2020 Full text

    This paper proposes a combination of the field matching technique, finite element method and generalized impedance matrix, the main idea of which is to reduce the computational domain by surrounding a scatterer with the smallest convex shape and applying the field matching technique. This approach can be applied for arbitrary shaped scatterers and types of materials and allows for the reduction of the computational domain. In order to verify the validity of the method, several examples have been investigated and compared with other numerical techniques.

  • DOMY W STANDARDZIE PASYWNYM WYTYCZNE I DOŚWIADCZENIA PROJEKTOWO-REALIZACYJNE
    • Alicja Karaś
    2020

    Tematem niniejszej publikacji są budynki mieszkalne jednorodzinne w standardzie pasywnym zgodnym z założeniami Passivhaus Institut Darmstadt – twórców idei budownictwa pasywnego. W publikacji przedstawione zostały zasady projektowania budynków pasywnych, jakimi Autorka, będąca Certyfikowanym Europejskim Projektantem Budynków Pasywnych z ramienia Passivhaus Institut Darmstadt, kieruje się na co dzień w praktyce zawodowej. Jako ilustracje poszczególnych zagadnień i zasad posłużyły projekty domów pasywnych powstałych w MIDI Pracowni Architektonicznej. Twórcami wszystkich projektów są architekci: Alicja Karaś (autorka), Piotr Karaś, Maja Belecka oraz Maria Murawska. Książka adresowana jest przede wszystkim do studentów architektury, ale również pragnących pogłębić swoją wiedzę w zakresie projektowania budynków pasywnych architektów oraz inwestorów rozważających tego rodzaju inwestycję. Publikacja zawiera szereg praktycznych wskazówek dotyczących projektowania oraz wykonawstwa.

  • Down-Sampling of Large LiDAR Dataset in the Context of Off-Road Objects Extraction
    • Wioleta Błaszczak-bąk
    • Joanna Janicka
    • Czesław Suchocki
    • Andrea Masiero
    • Anna Sobieraj-Żłobińska
    2020 Full text Geosciences

    Nowadays, LiDAR (Light Detection and Ranging) is used in many fields, such as transportation. Thanks to the recent technological improvements, the current generation of LiDAR mapping instruments available on the market allows to acquire up to millions of three-dimensional (3D) points per second. On the one hand, such improvements allowed the development of LiDAR-based systems with increased productivity, enabling the quick acquisition of detailed 3D descriptions of the objects of interest. However, on the other hand, the extraction of the information of interest from such huge amount of acquired data can be quite challenging and time demanding. Motivated by such observation, this paper proposes the use of the Optimum Dataset method in order to ease and speed up the information extraction phase by significantly reducing the size of the acquired dataset while preserving (retain) the information of interest. This paper focuses on the data reduction of LiDAR datasets acquired on roads, with the goal of extraction the off-road objects. Mostly motivated by the need of mapping roads and quickly determining car position along a road, the development of efficient methods for the extraction of such kind of information is becoming a hot topic in the research community.

  • Draft genome sequence of antimicrobial producing Paenibacillus alvei strain MP1 reveals putative novel antimicrobials
    • Magdalena Pajor
    • Jonathan Sogin
    • Randy Worobo
    • Piotr Szweda
    2020 Full text BMC Research Notes

    A Paenibacillus strain isolated in previous research exhibited antimicrobial activity against relevant human pathogens including Staphylococcus aureus and Listeria monocytogenes. In this study, the genome of the aforementioned strain, designated as MP1, was shotgun sequenced. The draft genome of strain MP1 was subject to multiple genomic analyses to taxonomically characterize it and identify the genes potentially responsible for its antimicrobial activity.