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Search results for: NIEZALEZNI CZLONKOWIE RADY NADZORCZEJ
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Kα1,2x-ray linewidths, asymmetry indices, and[KM]shake probabilities in elements Ca to Ge and comparison with theory for Ca, Ti, and Ge
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Local structural and chemical ordering of nanosized Pt(3±δ)Co probed by multiple-scattering x-ray absorption spectroscopy
PublicationThis work reports a detailed investigation of the local structure and chemical disorder of a Pt(3±δ)Co thin film and Pt(3±δ)Co nanoparticles. We have used a combination of techniques including x-ray absorption spectroscopy (XAS), x-ray diffraction (XRD), and high-resolution transmission electron microscopy (TEM). The important effect of chemical ordering on pair and three-atom configurations has been studied using computer simulations...
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Copper(II) complexes with substituted imidazole and chlorido ligands: X-ray, UV-Vis, magnetic and EPR studies and chemotherapeutic potential
PublicationCrystal structures, UV-Vis and EPR spectra and magnetic properties of four copper(II) complexes with chloride anions and 4-methylimidazole, 2-ethylimidazole, 2-isopropylimidazole or 2-ethyl-4-methylimidazole are described. In the solid state three of the complexes are mononuclear and one complex with 2-ethylimidazole is binuclear with bridging chlorido ions. UV-Vis spectra of the methanolic solutions of the complexes show LMCT...
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Computer-Aided Diagnosis of COVID-19 from Chest X-ray Images Using Hybrid-Features and Random Forest Classifier
PublicationIn recent years, a lot of attention has been paid to using radiology imaging to automatically find COVID-19. (1) Background: There are now a number of computer-aided diagnostic schemes that help radiologists and doctors perform diagnostic COVID-19 tests quickly, accurately, and consistently. (2) Methods: Using chest X-ray images, this study proposed a cutting-edge scheme for the automatic recognition of COVID-19 and pneumonia....
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Soft X-ray Induced Production of Neutral Fragments in High-Rydberg States at the O 1s Ionization Threshold of the Water Molecule
PublicationDissociation of water molecules after soft X-ray absorption can yield neutral fragments in high-Rydberg (HR) states. We have studied the production of such fragments by field ionization and ion time-of-flight (TOF) spectrometry. Neutral HR fragments are created at all resonances below the O 1s ionization potential (IP) and particularly within 1 eV above the O 1s IP. The latter effect is due to the recapture of the O 1s photoelectrons...
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Kinetics of photoinducet birefringence in the guest-host system of poly(methyl methacrylate)doped with azobenzene-containing crown ethers
PublicationWykazano występowanie fotoindukowanej dwójłomności dla klasy fotoaktywnych eterów koronowych składających się z reszty azobenzenu i giętkiego fragmentu oligo(oksyetylenowego) o różnej długości. Kinetyka fotoindukowanej dwójłomności była badana dla serii tych eterów koronowych rozpuszczonych w matrycy z polimetakrylanu metylu. Oczekiwano, że kształt cząsteczek koron zapewni względną swobodę reorientacji podczas izomeracji, niezależnie...
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Agata Kot-Wasik prof. dr hab. inż.
PeopleAgata Kot-Wasik, born in 1964 in Siedlce, graduated in 1988 from the Faculty of Chemistry, Gdańsk University of Technology in Industrial and Technical Analysis. In 1988-1992 she was employed in the Department of Organic Chemistry. In 1990, she completed postgraduate studies "Instrumental techniques in the traces analysis and Environmental Protection" at GUT, and in 1992 began PhD Studies at the Faculty of Chemistry, GUT, which...
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X-ray images of Baltic herring
Open Research DataA methodology for studying the geometric shape of Baltic herring swimbladders including the optimal way of catching, transporting and storing fish, the X-ray measurements and the X-ray image analysis, that does not change the natural shape of the fish swimbladder was developed. Fish for research was obtained in the area of the Polish coastal zone...
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X-Ray diffraction of the metallic nanostructures
Open Research DataMetallic nanostructures (gold and silver) were manufactured as a thermal annealing of gold or silver thin film. Gold films with thickness of 2.8 nm were deposited on a silicon substrates using a table-top dc magnetron sputtering coater (EM SCD 500, Leica), equipped with quartz microbalance for in-situ thickness measurements. Films were deposited from...
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X-ray photoelectron spectroscopy, Raman and photoluminescence studies on formation of defects in Cu:ZnO thin films and its role in nonlinear optical features
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5- epi -Incensole: synthesis, X-ray crystal structure and absolute configuration by means of ECD and VCD studies in solution and solid state
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Prediction of protein structure with the coarse-grained UNRES force field assisted by small X-ray scattering data and knowledge-based information
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Reconstructing human impact on peatland development during the past 200 years in CE Europe through biotic proxies and X-ray tomography
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Inner-shell fragmentation of molecules into neutral fragments in high-Rydberg states induced by soft X-ray excitation with pulsed-field ionization
PublicationIn the present communication, we will show the results of measurements probing the production of neutral high-Rydberg fragments at the K edges of the molecules containing oxygen and nitrogen atoms. The experiments were performed at the Gas Phase beamline of the Elettra synchrotron radiation laboratory (Trieste, Italy), exploiting a combined soft X-ray excitation with pulsed-field ionization and ion time-of-flight (TOF) spectrometry...
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Ekspertyza geotechniczna dot. wzmocnienia podłoża pod place składowe i torowisko zwałowarko-ładowarki Terminalu Przeładunkowo-Składowego Rudy w Porcie Północnym w Gdańsku
PublicationEkspertyza dotyczy wzmocnienia podłoża gruntowego pod składy materiałów sypkich oraz torowisko w Porcie Północnym w Gdańsku. Przeanalizowano warunki odkształcenia i osiadania podłoża oraz jego nośność.
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POLAND RULES! - Polska rządzi! Relacja z regat łodzi solarnych Dong Energy Solar Challenge 2014
PublicationW 2014 r. Studenci Wydziału Oceanotechniki i Okrętownictwa Politechniki Gdańskiej, członkowie Koła Naukowego „KORAB” zwyciężyli w regat łodzi zasilanych energią słoneczną Dong Energy Solar Boats Challenge – Holland 2015. W artykule opisano przygotowania do regat, łódź solarną oraz przebieg regat.
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Przejrzystość informacyjna spółek w świecie nadzoru korporacyjnego
PublicationOmówiono zagadnienia związane z zakresem nadzoru korporacyjnego, transparentność rynku kapitałowego oraz wymogi informacyjne spółek giełdowych. Określono role transparentności w nadzorze korporacyjnym. Zwrócono uwagę na niewłaściwe w tym zakresie praktyki spółek giełdowych.
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Zespołowe kreowanie wyrobu na przykładzie konstrukcji kosiarki do trawy
PublicationArtykuł przedstawia proces zespołowego projektowania i wytwarzania zdalnie sterowanej kosiarki do trawy. Kosiarka została wykonana przez członków Koła Naukowego Mechanik Politechniki Gdańskiej w ramach konkursu organizowanego przez firmę Briggs&Stratton. W ogólnopolskim finale członkowie Koła zajęli drugie miejsce i otrzymali cenne nagrody.
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Krzysztof Wilde prof. dr hab. inż.
PeopleKrzysztof Wilde (born January 11th, 1966 in Gdańsk) – expert in bridge structures, structural mechanics and diagnostics of civil structures. He conducted research on vibration reduction systems for bridges exposed to dynamic loads from winds and earthquakes. At present he is interested in the field of nondestructive testing of materials and structural health monitoring systems. Hi is author or coauthor of over 200 publications...
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Effect of Ethanol Extracts of Propolis (EEPs) against Staphylococcal Biofilm—Microscopic Studies
PublicationStaphylococci growing in the form of biofilm exhibit high resistance to a plethora of antibiotics. The aim of the study was to assess the influence of ethanolic extract of propolis (EEPs) on S. epidermidis ATCC 35984 biofilm using fluorescent microscopy. Propidium iodide (PI) and SYTO 9 were used for differentiation of live and dead cells, and calcofluor white was used to stain the extracellular matrix, the self-produced extracellular...
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Evolution of the nanostructure of Pt and Pt–Co polymer electrolyte membrane fuel cell electrocatalysts at successive degradation stages probed by X-ray photoemission
PublicationWe present a set of XPS (X-ray photoemission spectroscopy) measurements and detailed data-analysis of electrodes for polymer electrolyte membrane fuel cell (PEMFC) based on carbon supported catalysts (Pt and Pt–Co) subjected to a step-like potential cycling (accelerated degradation test). The results of the measurements complete and corroborate parallel TEM (transmission electron microscopy), XRD (X-ray diffraction) and XAS (X-ray...
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Enhancement of the Magnetic Coupling in Exfoliated CrCl 3 Crystals Observed by Low‐Temperature Magnetic Force Microscopy and X‐ray Magnetic Circular Dichroism
PublicationMagnetic crystals formed by 2D layers interacting by weak van der Waals forces are currently a hot research topic. When these crystals are thinned to nanometric size, they can manifest strikingly different magnetic behavior compared to the bulk form. This can be the result of, for example, quantum electronic confinement effects, the presence of defects, or pinning of the crystallographic structure in metastable phases induced by...
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Mechanical and radiation shielding properties of concrete reinforced with boron--basalt fibers using Digital Image Correlation and X--ray micro--computed tomography
PublicationThe paper presents experimental investigations of the radiation shielding, mechanical and fracture properties of concrete reinforced with 5 kg/m3 of novel basalt fibers infused with boron oxide (BBF). However, further studies concerning other dosages i.e. 1 kg/m3, 10 kg/m3, 15 kg/m3 and 20 kg/m3 are currently carried out. Experiments with neutron source revealed that addition of BBF as a dispersed concrete reinforcement could improve...
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Założenia do integracji metod zarządzania ryzykiem w transporcie
PublicationNiniejszy referat stanowi wynik prac zespołu interdescyplinarnego pracującego nad próbą integracji metod zarządzania ryzykiem, którego członkowie byli przedstawicielami czterech rodzajów transportu: kolej, lotnictwo, transport morski, transport drogowy, w projekcie Zintegrowany System Bezpieczeństwa Transportu ZEUS. Referat zawiera zalożenia do integracji metod zarządzania ryzykiem w transporcie.
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Agnieszka Witkowska dr hab. inż.
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Joanna Maria Kowalewska mgr inż. arch.
PeopleJoanna Kowalewska jest absolwentką Wydziału Architektury Politechniki Gdańskiej oraz Ekonomii i Zarządzania na Politechnice Gdańskiej. W 2018 r. otworzyła przewód doktorski na Wydziale Architektury, a jej badania związane są z zagadnieniami dotyczącymi miejskich ogrodów użytkowych. Joanna aktywnie działa w kilku organizacjach pozarządowych: pełniła stanowisko wiceprezesa zarządu fundacji Odyssey of the Mind Polska (2015-2017)....
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Sborník prací filozofické fakulty brnenské univerzity. Rada germanistická. Brünner Beiträge zur Germanistik und Nordistik
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Data obtained by computation for X-ray imaging of grating without magnification using oriented Gaussian beams
Open Research DataThe propagation of X-ray waves through an optical system consisting of grating and X-ray refractive lenses is considered. In this approach, the propagating wave is represented as a superposition of the oriented Gaussian beams. The direction of wave propagation in each Gaussian beam is consistent with the local propagation direction of the X-ray wavefront.
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Data obtained by computation for X-ray imaging of grating with magnification factor equal 2 using oriented Gaussian beams
Open Research DataThe propagation of X-ray waves through an optical system consisting of grating and X-ray refractive lenses is considered. In this approach, the propagating wave is represented as a superposition of the oriented Gaussian beams. The direction of wave propagation in each Gaussian beam is consistent with the local propagation direction of the X-ray wavefront.
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Data obtained by computation for X-ray imaging of grating with magnification factor equal 4 using oriented Gaussian beams
Open Research DataThe propagation of X-ray waves through an optical system consisting of grating and X-ray refractive lenses is considered. In this approach, the propagating wave is represented as a superposition of the oriented Gaussian beams. The direction of wave propagation in each Gaussian beam is consistent with the local propagation direction of the X-ray wavefront.
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Data obtained by computation for X-ray imaging of grating with magnification factor equal 8 using oriented Gaussian beams
Open Research DataThe propagation of X-ray waves through an optical system consisting of grating and X-ray refractive lenses is considered. In this approach, the propagating wave is represented as a superposition of the oriented Gaussian beams. The direction of wave propagation in each Gaussian beam is consistent with the local propagation direction of the X-ray wavefront.
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X-ray diffractometry results of the Sr0.86Ti0.65Fe0.35O3 powder
Open Research DataThis dataset contains results of X-ray diffractometry mesurement (XRD) of the Sr0.86Ti0.65Fe0.35O3-d (STF35) powder. The phase composition of the investigated STF35 powder was analyzed by XRD at room temperature. It confirms the formation of the cubic perovskite oxide phase. Calculated average lattice constant is a 3.90882(1) Å, with Goodness of Fit...
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Marek Szkodo dr hab. inż.
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Mechanical and fracture properties of concrete reinforced with recycled and industrial steel fibers using Digital Image Correlation technique and X-ray micro computed tomography
PublicationPaper presents investigation of fracture phenomenon in plain concrete and in concrete reinforced with both recycled steel fibers (RSF) and industrial steel fibers (ISF). The wedge splitting test (WST), which enables stable crack propagation for quasi-brittle materials, was carried out on 75 75 75 mm cube samples. Initially, fracture process zone development was investigated only on the surface of samples using Digital Image Correlation...
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Postępy obrazowania termicznego w podczerwieni
PublicationOmówiono stan technik obrazowania termicznego w podczerwieni. Uwagę skupiono na metodach aktywnej termografii dynamicznej, która jest intensywnie rozwijana w Katedrze Inżynierii Biomedycznej PG, we współpracy z AMG i UG, w zakresie diagnostyki oparzeń, nowotworów piersi i w nadzorze kardiochirurgicznym.
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Experimental and numerical study on spontaneous ignition of hydrogen and hydrogen-methane jets in air
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Rada Wydziału
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Dyrektywy Unii Europejskiej dotyczące polityki energetycznej
PublicationW artykule omówiono politykę energetyczną w Unii Europejskiej w oparciu o dokumenty Rady UE i Komisji Europejskiej, jak np. Zielona Księga, dotycząca strategii bezpiecznego zaopatrzenia w energię oraz Biała Księga, dotycząca źródeł energii odnawialnej. Przedstawiono ważniejsze dyrektywy, wydawane przez Parlament Europejski i Radę Unii Europejskiej, dotyczące polityki energetycznej UE oraz źródeł energii odnawialnej.
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Wojciech Rudy PhD Eng
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Adam Barylski prof. dr hab. inż.
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Prezentacja grafik i akwarel na wystawie modelarstwa szkutniczego i okrętowego, Centrum Wystawienniczo-Regionalne Dolnej Wisły w Tczewie - Fabryka Sztuk, 11-21.08.2011 r.
PublicationPrzedmiotem wystawy były grafiki i akwarele o tematyce marynistycznej artysty palstyk Krystyny Pokrzywnickiej- arch. i art. plastyk Krystyna Pokrzywnicka, członkowie zespołu modelarzy szkutniczych ''Koga'': Jarosław Bąkowski, Marian Deja, Mirosław Rybus, Jarosław Ferens, Kazimierz Dembowski, Adam Lasko, Krzysztof Wasilewski, Cezary Szczepanik, Artur Wasilak, Kazimierz Grabowski, Zbigniew Kowalewski, Romuald Sobolewski, Konrad Sołtysik,...
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Waldemar Lis dr inż.
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Monitoring the fracture process of concrete during splitting using integrated ultrasonic coda wave interferometry, digital image correlation and X-ray micro-computed tomography
PublicationThe paper deals with the continuous-time monitoring of mechanical degradation in concrete cubes under splitting. A series of experiments performed with integrated coda wave interferometry (CWI) and digital image correlation (DIC), supported with X-ray micro-computed tomography (micro-CT) is reported. DIC and micro-CT techniques were used to characterize the fracture process in detail. CWI method was proved to be effective in the...
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New examples of N^(+)-H···^(-)S hydrogen bonds: Synthesis and X-ray study of selected secondary ammonium tri-tert-butoxysilanethiolates
PublicationTri-tert-butoksysilanotiol reagując z aminami drugorzędowymi: Et2NH, morfoliną, dicykloheksyloaminą i 2,2,4,4-tetrametylopiperydyną daje odpowiednie sole amoniowe. Jak wykazują rentgenowskie badania strukturalne wszystkie te związki tworzą w ciele stałym jednostki dimeryczne {RS(-), R'NH2(+)}2, powiązane wiązaniami wodorowymi typu: N(+)-H···(-)S.
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X-ray images of Baltic herring. Data analysis
Open Research DataBased on the developed methodology for the: (i) optimal method of catching, (ii) transporting and storing fish, (iii) measuring and (iv) analyzing X-rays images, the existing collection of X-ray images of Baltic herring, caught in October 2002 during the Swedish component of the Baltic International Acoustic Survey (BIAS) in the Baltic proper (ICES...
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X-ray diffraction spectra of the NiCo2O4 modified by carbon
Open Research DataThis dataset comprises XRD results for NiCo2O4 modified with carbon, varying according to the amount of carbon. In this context, the XRD data provide insights into the crystalline structure and phase composition of the NiCo2O4 material as it is modified with varying quantities of carbon. This investigation is valuable for understanding how the presence...
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X-ray Photoelectron Spectroscopy studies of ammonium vanadate
Open Research DataThe DataSet contains the high-resolution XPS studies of the ammonium vanadate nanostructures obtained by the hydrothermal method. XPS analyses were carried out with an X-ray photoelectron spectrometer (Omicron NanoTechnology) with a 128-channel collector. The measurements were performed at room temperature in an ultra-high vacuum condition (below 1.1x10-8...
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X-ray diffractometry results of the SrTi0.50Fe0.50O3-d powder
Open Research DataThis dataset contains results of X-ray diffractometry mesurement (XRD) of the SrTi0.50Fe0.50O3-d (STF50) powder after ball milling. The phase composition of the investigated STF50 powder was analyzed by XRD at room temperature. The X-ray diffractometry (XRD) technique was used to determine the phase composition of the fabricated powder. Measurements...
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X-ray diffractometry results of the SrTi0.35Fe0.65O3-d powder
Open Research DataThis dataset contains results of X-ray diffractometry mesurement (XRD) of the SrTi0.35Fe0.65O3-d (STF35) powder after ball milling. The phase composition of the investigated STF35 powder was analyzed by XRD at room temperature. The X-ray diffractometry (XRD) technique was used to determine the phase composition of the fabricated powder. Measurements...
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X-ray diffractometry results of the SrTi0.30Fe0.70O3-d powder
Open Research DataThis dataset contains results of X-ray diffractometry mesurement (XRD) of the SrTi0.30Fe0.70O3-d (STF70) powder after ball milling. The phase composition of the investigated STF70 powder was analyzed by XRD at room temperature. The X-ray diffractometry (XRD) technique was used to determine the phase composition of the fabricated powder. Measurements...