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Search results for: PAH, PCB
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Genotyping and characterization of virulence factors in Escherichia coli strains isolated from patients from Polish hospital
PublicationZakażenia układu moczowego (UTIs - ang. urinary track infections) są jedną z najczęstszy infekcji, za które w 85% przypadków odpowiedzialne są bakterie Escherichia coli. Infekcje układu moczowego mogą prowadzić do groźnych powikłań m. in. odmiedniczkowego zapalenia nerek. Śmiertelność wśród tej grupy pacjentów wynosi 1-3%. Zakażenia układu moczowego występują również u ok. 7% kobiet ciężarnych. W pracy przebadano 82 szczepy E....
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Marek Biziuk prof. dr hab. inż.
PeopleCURRICULUM VITAE Marek BIZIUK Born 1947 MSc 1969 GUT PhD 1977 GUT DSc 1994 GUT Professor 2001 Membership of scientific society - Gdansk Scientific Society - Romanian Society of Analytical Chemistry - Engineers and Techniques of...
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Zagrożenie środowiska ze strony człowieka
PublicationOpisano główne zagrożenia ze strony człowieka dla środowiska naturalnego. Podkreslono znaczenie czystego powietrza i czystej wody dla pawidłowego funkcjonowania ekosystemów, w tym człowieka. Omówiono zanieczyszczenie powietrza ''kwaśnymi gazami'' oraz pyłami, emisję do środowiska metali ciężkich, freonów, i związane z tym problemy powstawania dziury ozonowej oraz efektu cieplarnianego. Omówiono również zanieczyszczenie wód lotnymi...
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Impact of pollution derived from ship wrecks on the marine environment on the basis of s/s ''Stuttgart'' (Polish coast, Europe)
PublicationW 1943 roku niemiecki statek szpitalny, s/s Stuttgart (Lazaretschiff ''C'') został zatopiony w pobliżu portu w Gdyni. Doprowadziło to do zanieczyszczenia dna morskiego paliwem. Podczas badań przeprowadzonych w 2009 r. pobranych zostało 11 próbek osadów powierzchniowych i wody morskiej oraz 4 rdzenie. Próbki poddano analizie na zawartość zanieczyszczeń priorytetowych należących do grupy wielopierścieniowych węglowodorów aromatycznych...
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Preconditioners with Low Memory Requirements for Higher-Order Finite-Element Method Applied to Solving Maxwell’s Equations on Multicore CPUs and GPUs
PublicationThis paper discusses two fast implementations of the conjugate gradient iterative method using a hierarchical multilevel preconditioner to solve the complex-valued, sparse systems obtained using the higher order finite-element method applied to the solution of the time-harmonic Maxwell equations. In the first implementation, denoted PCG-V, a classical V-cycle is applied and the system of equations on the lowest level is solved...
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Spectroscopic studies of a ring opening process between epoxy- and aminosilanes and imine formation reactions in aqueous solutions
PublicationNMR and Raman spectroscopy studies were performed for different 3-aminopropyl(trimethoxy)- and 3-glycidoxypropyl (trimethoxy)silane based sol-gel systems containing different ketones. Exceptionally stable imine products were obtained depending on a reaction system at alkaline pH conditions and in the presence of water. These imine formation reactions were carried out without further catalyst. In addition, effect of water for the...
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Dynamic impedance data for various carboxylic acids corrosion inhibition of aluminium in alkaline media (pH=11)
Open Research DataThis dataset contains the results of Dynamic Electrochemical Impedance Spectroscopy (DEIS) carried out in galvanostatic mode under iDC=0, carried out in order to define the corrosion inhibition effect of various studied carboxylic acids: citric acid, malic acid, maleic acid, succinic acid, tartaric acid, carballylic acid, and serine. The experiment...
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Thermal Energy Storage with PCMs in Shell-and-Tube Units: A Review
PublicationThe paper presents a survey of the experimental and numerical studies of shell-and-tube systems in which phase change material (PCM) is used. Due to the multitude of design solutions for shell-and-tube systems, the emphasis is placed on double-tube (DT), triplex-tube (TT), and multitube (MT) units. Additionally, only single-pass systems are considered. Particular attention is paid to the method of heat transfer intensification....
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Power converter interface for urban DC traction substations - solutions and functionality.
PublicationThis paper focuses on extending an urban DC traction substation functionality by means of an additional power converter interface (PCI). In particular, by enabling bidirectional energy exchange between LV DC traction grid, AC grid and V2G chargers. Among other things, the presented material compares general attributes of the most promising DC/DC converters that can be used in a PCI, meet the requirements of galvanic isolation and...
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Expression of Deinococcus geothermalis Trehalose Synthase Gene in Escherichia coli and Its Enzymatic Properties
PublicationA novel trehalose synthase gene from Deinococcus geothermalis (DSMZ 11300) containing 1,692 bp reading-frame encoding 564 amino acids was amplified using PCR. The gene was ligated into pET30Ek/LIC vector and expressed after isopropyl alfa-D-thiogalactopyranoside induction in Escherichia coli BL21(DE3)pLysS. The recombinant trehalose synthase (DgeoTreS) containing a His6 tag at the C-terminus was purified by metal affinity chromatography...
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In-situ generation of Ag, Cd, Hg, In, Pb, Tl and Zn volatile species by flowing liquid anode atmospheric pressure glow discharge operated in gaseous jet mode – Evaluation of excitation processes and analytical performance
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Development of a vortex-assisted switchable-hydrophilicity solvent-based liquid phase microextraction for fast and reliable extraction of Zn (II), Fe (II), Pb (II), and Cd (II) from various baby food products
PublicationThis manuscript describes the development of a novel liquid phase microextraction (LPME) method for the extraction and determination of Zn (II), Fe (II), Pb (II), and Cd (II) in various infant/baby food and supplements products. The method is based on vortex-assisted extraction combined with a switchable-hydrophilicity solvent (SHS) sample preparation. The SHS, which undergoes reversible phase changes triggered by pH change, enables...
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'23/'24 Badanie żywności techniką PCR
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'21/'22 Badanie żywności techniką PCR
e-Learning CoursesCEL: Student identyfikuje i klasyfikuje patogeny oraz grzyby toksynotwórcze w żywności i ocenia ich szkodliwość. Przedstawia podstawowe systemy diagnostyczne, stosowane do wykrywania zafałszowań w żywności. Wyjaśnia zasady działania techniki PCR.
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Silver(I) complexes with nitrile ligands: New materials with versatile applications
PublicationIn the present study, the structure, thermal stability, conductive properties, and antimicrobial activity of silver(I) complexes with nitrile ligands were investigated. For the construction of the materials, 2-cyanopyridine (2-cpy), 4-cyanopyridine (4-cpy), 1,2-dicyanobenzene (1,2-dcb), and 1,3-dicyanobenzene (1,3-dcb) were used in addition to the silver nitrite and nitrate. Four new compounds were isolated and structurally characterized:...
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The chemistry of river–lake systems in the context of permafrost occurrence (Mongolia, Valley of the Lakes). Part I. Analysis of ion and trace metal concentrations
PublicationThis study provides a description of water chemistry in river–lake systems located in central Mongolia, at the borderline of permafrost occurrence. The analysis involved water samples collected from two river–lake systems: Baydrag River–Böön Tsagaan Lake system, and Shargalyuut/Tuyn Rivers–Orog Lake system. In the water samples, ions and trace elements were detected and quantified. Additionally, the parameters of pH, electrical...
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Kazimierz Kosmowski prof. dr hab. inż.
PeopleKazimierz Tadeusz Kosmowski (ur. 12 maja 1947 r. w Nakle nad Notecią) – specjalizacja z zakresu niezawodności i bezpieczeństwa systemów technicznych. Prowadzi badania dotyczące metod identyfikacji zagrożeń oraz analizy i oceny ryzyka ukierunkowanych na obiekty przemysłowe i systemy infrastruktury krytycznej w cyklu życia. Aktualne zainteresowania naukowe dotyczą współdziałania systemów OT i IT oraz bezpieczeństwa funkcjonalnego...
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Produkt krajowy brutto a wartość przedsiębiorstw notowanych na GPW w Warszawie
PublicationCelem artykułu jest określenie korelacji pomiędzy kwartalnym PKB a księgową i rynkową wartością przedsiębiorstw notowanych na giełdzie dla danych kwartalnych. W oparciu o zależność pomiędzy subindeksami sektorowymi i PKB dokonano identyfikacji sektora, w którym ta zależność jest najsilniejsza. Zatem analiza oparta została o wybrane spółki sektora chemicznego.
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Deep eutectic solvents based assay for extraction and determination of zinc in fish and eel samples using FAAS
PublicationA new assay based on effective (high recovery) extraction by means of deep eutectic solvents (DESs) was developed for ppb level determination of zinc in fishes and eel samples. Choline chloride and Phenol in a 1:2 M ratio was selected as optimal DES-based extraction solvent. 8-Hydroxy quinoline was used as a chelating agent for zinc ions. The optimized conditions were found at pH value of 8, ligand concentration of 10 mg/L, THF...
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Beata Zima dr hab. inż.
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Diffuse large B-cell lymphoma, activated B-cell subtype - Female, 47 - Tissue image [6130730026848681]
Open Research DataThis is the histopathological image of COLON tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 1000 slide scanner (20x magnification) and saved to DICOM format.
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Wpływ syntetycznego polihydroksymaślanu na wybrane właściwosci nowych, otrzymanych z jego udziałem poliuretanów do zastosowań medycznych. cz II. Poliuretany z cykloalifatycznym diizocyjanianem w segmencie sztywnym. Polimery 56(1) 27-34, 2011
Publicationzsyntezowano poliuretany, w ltórych segmenty gietkie SG były zbudowane z telehelicznego, zakończonego obustronnie grupami -OH, ataktycznego polihydroksymaślanu (PHB). Wyniki DSC wskazują, że wprowadzenie PHB zaburza uporządkowanie w obrębie SG i sztywnych, zminejsza sie stopień krystaliczności, zwieksza sie nieco sorpcja wody. Test mikrobiologiczne wytworzonych PUR dowodzą skuteczności sterylizacji plazmą.
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Materiały zmiennofazowe do stabilizowania temperatury nawierzchni asfaltowych
PublicationW artykule przedstawiono możliwość wykorzystania lekkiego kruszywa budowlanego modyfikowanego materiałem zmiennofazowym (PCM), jako dodatku do nawierzchni asfaltowej, w celu zwiększenia jej stabilności termicznej przy zachowaniu dotychczasowych właściwości mechanicznych. Cel ten może zostać osiągnięty przez nasączenie porowatych granulek lekkiego kruszywa odpowiednim materiałem zmiennofazowym, co umożliwi magazynowanie określonych...
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Novel method of lung area extraction in chest perfusion computed tomography
PublicationChest perfusion computed tomography (pCT) is a useful technique in the medical diagnosis of how organs function. Perfusion CT scans are used to calculate perfusion parameters. In the case of automated methods of lung perfusion parameters calculation, the prior extraction of the lung area is desired to avoid unnecessary calculation in an area outside the lung cross-section and to avoid wasting time on processing signals of no diagnostic...
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Genotyping of clinical isolates of fluconazole-resistant Candida albicans
PublicationThe aim of the study was to compare the discriminatory power of RAPD-PCR method with using RSD10 primer and microsatellite analysis with using (GACA)4 primer for genotyping clinical isolates of fluconazole-resistant C. albicans. Isolates were received from patients of Children's Memorial Health Institute in Warsaw. However in the case of both tested methods low number of amplified fragments was generated, nine and six different...
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Two complementary approaches for the synthesis and isolation of stable phosphanylphosphaalkenes
PublicationPhospha-Wittig (phosphanylphosphinidene titanium(IV) complex) and phospha-Peterson (lithiated diphosphane) reactions were used to obtain phosphanylphosphaalkenes with the general formula XYC=P-PtBu2 (X = alkyl, aryl group or H; Y = alkyl or aryl group). Therefore, two series of reactions with different ketones and aldehydes were performed. An examination revealed that the two methods are complementary. For smaller carbonyl compounds,...
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Analiza trwałości zmęczeniowej asfaltów drogowych i modyfikowanych z wykorzystaniem testu liniowego zwiększania amplitudy / Analysis of the fatigue life of neat and modified bitumens using linear amplitude sweep test
PublicationThe paper presents an evaluation of the fatigue resistance of selected Polish bituminous binders: neat bitumen 50/70, polymer modified bitumen PMB 45/80-55 and polymer highly modified bitumen PMB 45/80-80. The linear amplitude sweep (LAS) test, which is a new bitumen performance grading test developed in the USA, and was used to assess the fatigue life of the bitumens. Highly modified bitumen 45/80-80 showed 10-20 times higher...
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Barbara Kusznierewicz dr hab. inż.
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Właściwości poliuretanów z syntetycznym poli(R,S-3-hydroksymaślanem) w segmencie giętkim
PublicationOtrzymano poliuretany (PUR), zwierające polikaprolakton lub politetremetylenoglikol oraz ataktyczny,teleheliczny poli(R,S-3-hydroksymaślan - a-PHB)w segmencie giętkim o potencjalnym zastosowaniu do celów medycznych. Zbadano właściwości termiczne, mechaniczne oraz gęstość próbek. Po wprowadzeniu a-PHB wytrzymałość PUR zmalała, natomiast gęstość i temperatura zeszklenia została podwyższona. Zaobserwowano także spadek krystaliczności...
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The overview of reactors used for the production of precipitated calcium carbonate via carbonation route
PublicationCarbonation is one of the methods for the production of precipitated calcium carbonate (PCC) on the industrial scale. A gaseous CO2 is used as a reagent in this process. The hydrodynamic conditions gener-ated in the reactor affect the course of the process and the characteristics of the precipitated calcium carbonate particles. This paper discusses the construction of standard reactors and new proposed con-struction used for the...
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Analysis of positioning error and its impact on high frequency properties of differential signal coupler
PublicationThis paper presents the analysis of the effect of differential signal coupler positioning accuracy on its high frequency performance parameters for contact-less high speed chip-to-chip data transmission on PCB application. Our considerations are continuation of the previous works on differential signal coupler concept, design methodology and analysis for high speed data transmission monitoring. The theoretical analysis of possible...
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Katarzyna Kubiszewska dr
PeopleKatarzyna Kubiszewska has taught finance and banking at the Department of Finance since 2008. In his scientific work, he is interested in the transformation of banking systems in the Central and Eastern European region, but also in the financing of the cultural sector. The publications concern the field of social sciences in the discipline of economics and finance. Since 2019, he has been collaborating with journals such as Economic...
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Paweł Filipkowski dr inż.
PeoplePaweł Filipkowski Ph.D. Biotechnology Department of Chemistry, Technology and Biotechnology of Food Faculty of Chemistry Gdansk University of Technology Narutowicza 11/12 80-233 Gdansk, Poland Tel: +48 58 3472456 e-mail: pawel.filipkowskiATpg.edu.pl Current position: Assistant Professor/Senior Lecturer*(from Jan.2019) of Biotechnology, Department of Chemistry, Technology and Biotechnology of Food, Gdansk University of Technology. Education: Eng....
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Reliability and Operating Analysis of Transmission of Alarm Signals of Distributed Fire Signaling System
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Błąd metody oszacowania skuteczności systemu ochrony fizycznej obiektu
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Indicator Analysis of Security Risk for Electronic Systems Used to Protect Field Command Posts of Army Groupings
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Selected issues of the reliability and operational assessment of a fire alarm system
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Analiza energii elektrycznej pobieranej w obiektach użyteczności publicznej
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Exploitation of Electronic Devices - Selected Issues
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Modeling of the process of selected fire signaling systems
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Selected aspects of application UAVS to recognize characteristic quantities of fire.
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Wyniki badań podatności wybranych urządzeń na wyładowania elektryczne - wnioski
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Analysis of electrical energy consumption on the example of a selected building
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Selected issues regarding the reliability-operational assessment of electronic transport systems with regard to electromagnetic interference
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Determination of the impact indicators of electromagnetic interferences on computer information systems
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Operational System Modelling in a Focused Fire Alarm System with an Open and Signal Detection Circuit Supervising Railway Station Premises
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Analysis of Reliability Structures for Fire Signaling Systems in the Field of Fire Safety and Hardware Requirements
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Analysis of occurrence of guided disorders in selected railway equipment — impact of load on measurement results
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Analysis of the Electronic Device Exploitation Process – Research Results
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The assessment of exploitation process of power for access control system
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