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Wyniki wyszukiwania dla: color rendering index (CRI)
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Jakub Szulwic dr inż.
OsobyJakub Szulwic (ur. 23 grudnia 1974 w Bydgoszczy) – geodeta uprawniony, specjalizujący się w zakresie pomiarów i oceny geometrii obiektów inżynierskich szczególnie z wykorzystaniem metod fotogrametrii inżynieryjnej i skaningu laserowego; zajmuje się geomatyką i geoinformtyką. Autor ponad 100 publikacji naukowych, w tym 50 indeksowanych w Web of Science (h-index =15). W 1993 roku ukończył klasę o profilu mat-fiz i zdał maturę w Liceum...
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On the modelling of anisotropy and destructuration of soft clays within the multi-laminate framework.
PublikacjaZaproponowano nowy model konstytutywny dla słabonośnych gruntów drobnoziarnistych, w którym anizotropię cech wytrzymałościowych połączono ze zmianami struktury szkieletu gruntowego. Model ten został sformułowany w ramach tzw. modeli wielopłaszczyznowych (multi-laminate) bazujących na teorii sprężysto-plastyczności. Przedstawiono praktyczne zastosowanie modelu do obliczeń nasypu drogowego na podłożu słabonośnym metodą elementów...
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A note on polynomial algorithm for cost coloring of bipartite graphs with Δ ≤ 4
PublikacjaIn the note we consider vertex coloring of a graph in which each color has an associated cost which is incurred each time the color is assigned to a vertex. The cost of coloring is the sum of costs incurred at each vertex. We show that the minimum cost coloring problem for n-vertex bipartite graph of degree ∆≤4 can be solved in O(n^2) time. This extends Jansen’s result [K.Jansen,The optimum cost chromatic partition problem, in:...
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Biological responses to environmental contamination. How can metal pollution impact signal honesty in avian species?
PublikacjaEnvironmental pollution, for example with metals, can significantly affect the ecosystem balance leading to severe changes. Biologically active pigments are relevant for the appearance and condition of birds. Melanin and carotenoid particles are the most frequently deposited pigments in avian integument. They are responsible for the majority of colors of bird plumage. The phenotypic expression can be affected by metal contamination....
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Electrodes criticality: the impact of CRMs in the leachate electrochemical oxidation
Publikacja. Landfill leachate possesses high concentrations of ammonia, micropollutants, and heavy metals, and are characterised for low biodegradability. For this reason, conventional treatment technologies may result ineffective for complete pollutant removal. Electrochemical oxidation allows most of the of recalcitrant pollutants to be oxidised effectively within an easy operational and acceptable retention time, without the need to provide...
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Unia Europejska i strefa euro : doświadczenia i wyzwania ekonomiczne, techniczne, inżynieryjne : monografia
PublikacjaAutorzy: Gwóźdź-Lasoń Monika, Miklaszewicz Sławomir,
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Nowe czynniki wpływające na szacowanie wartości nieruchomości zabudowanych
PublikacjaKwartalnik Informacyjny MSRM2022, nr 3, s. 19-28, il.
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Video DATA - Traffic generation modeling for discount shops - Chrobrego Street
Dane BadawczeThe data includes video traffic data (vehicles, pedestrians, cyclists) registered at 75 Chrobrego street in Gdansk. The data covers the day 01.10.2020 at 6:00-22:00. The video camera was installed at the parking area belonging to the discount store Lidl. The data obtained was used in analysis, providing information about the modal split, the number...
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Video DATA - Traffic generation modeling for discount shops - Czerska Street
Dane BadawczeThe data includes video traffic data (vehicles, pedestrians, cyclists) registered at 71 Czerska street in Gdansk. The data covers the day 01.10.2020 at 6:00-22:00. The video camera was installed at the parking area belonging to the discount store Lidl. The data obtained was used in analysis, providing information about the modal split, the number of...
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Video DATA - Traffic generation modeling for discount shops - Gdanska Street
Dane BadawczeThe data includes video traffic data (vehicles, pedestrians, cyclists) registered at 21C Gdanska street in Gdansk. The data covers the day 01.10.2020 at 6:00-22:00. The video camera was installed at the parking area belonging to the discount store Lidl. The data obtained was used in analysis, providing information about the modal split, the number of...
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Video DATA - Traffic generation modeling for discount shops - Dragana Street
Dane BadawczeThe data includes video traffic data (vehicles, pedestrians, cyclists) registered at 27 Dragana street in Gdansk. The data covers the day 01.10.2020 at 6:00-22:00. The video camera was installed at the parking area belonging to the discount store Lidl. The data obtained was used in analysis, providing information about the modal split, the number of...
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Neuroendocrine tumor, grade 2 - Female, 39 - Tissue image [6060730023671851]
Dane BadawczeThis 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 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Neuroendocrine tumor, grade 2 - Female, 39 - Tissue image [6060730023671581]
Dane BadawczeThis 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 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Neuroendocrine tumor, grade 2 - Female, 39 - Tissue image [6060730023673481]
Dane BadawczeThis 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 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Neuroendocrine tumor, grade 2 - Female, 39 - Tissue image [6060730023679281]
Dane BadawczeThis 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 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Neuroendocrine tumor, grade 2 - Female, 39 - Tissue image [6060730023675121]
Dane BadawczeThis 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 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Simple colorimetric copper(II) sensor – spectral characterization and possible applications
PublikacjaNew o-hydroxyazocompound L bearing pyrrole residue was obtained in the simple synthetic protocol. The structure of L was confirmed and analyzed by X-ray diffraction. It was found that new chemosensor can be successfully used as copper(II) selective spectrophotometric regent in solution and can be also applied for the preparation of sensing materials generating selective color signal upon interaction with copper(II). Selective colorimetric...
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Morphology changes in Fe-Cr porous alloys upon high-temperature oxidation quantified by X-ray tomographic microscopy
PublikacjaThe effect of high-temperature oxidation at 850 C (10 h, 30 h, 100 h) and 900 C (10 h) on porous (30 % porosity) ferritic stainless steel (Fe22Cr) has been investigated using synchrotron tomographic microscopy, which allowed for visualisation, separation and quantitative analysis of the metallic core, closed pores, open pores and oxide scale phase. The same regions within the samples were investigated before and after oxidation...
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PROGNOZOWANIE MAKSYMALNYCH GRANICZNYCH WARTOŚCI PRĘDKOŚCI POSUWU DLA PROCESU PRZECINANIA DREWNA NA PILARKACH RAMOWYCH
PublikacjaDo szacowania efektów energetycznych (moc skrawania, siła skrawania), w klasycznym podejściu, przy przecinaniu drewna piłami wykorzystuje się w obliczeniach opór właciwy skrawania, który w przypadku drewna jest funkcją wielu mniej lub bardziej istotnych czynników. Innym podejściem jest zastosowanie modelu bazującego na mechanice pękania, w którym bierze się pod uwagę oprócz wytrzymałości drewna, warunki tarcia, a także właciwość...
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Rapid development of the photoresponse and oxygen evolution of TiO2 nanotubes sputtered with Cr thin films realized via laser annealing
PublikacjaRecently, earth abundant transition metal oxides have gained particular attention as potential catalyst candidates due to their availability and low-cost comparing to substrates containing precious Pt or Au species. Herein, we present characterization of morphology, structure and electrochemical properties of pulsed 532 nm laser treated TiO2 nanotubes (NT) sputtered by the thin film of chromium. Scanning electron microscopy enables...
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COLON, Large bowel, NOS - Female, 0 - Tissue image [4130730018869201]
Dane BadawczeThis 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 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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COLON, Large bowel, NOS - Female, 73 - Tissue image [6080730009643911]
Dane BadawczeThis 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 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.
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Tri-tert-butoksysilanotiolanowe kompleksy cynku(II), kadmu(II) i kobaltu(II) jako modele koordynacji jonu cynku w miejscu aktywnym dehydrogenazy alkoholowej i niektórych innych enzymów
PublikacjaDehydrogenaza alkoholowa (ADH) katalizuje odwracalne utlenienie alkoholi do aldehydów przy użyciu NAD+ co można podsumować równaniem:R1R2CHOH + NAD+ = R1R2CO + NADH + H+. Geometria koordynacyjna cynku w miejscu aktywnym ADH opisywana jest na ogół jako tetraedryczna jednak istnieją również przesłanki wskazujące na poszerzanie sfery koordynacyjnej metalu w cyklu katalitycznym do LK=5. W pracy przeglądowej opisano badania nad syntetycznymi,...
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Formation of acoustic field in rooms
PublikacjaPaper describes known form literature method of sound diffusity index assesment, which utilizes impulse response of the room. Process of froming diffused sound field using this method was investigated.Increase of sound diffusity index in time was noted in rooms differing in shape,volume and reverberation time. Exponential growth of sound diffusion index was noted which correlates with other acoustical rooms measures.
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Influence of lightweight structures used in swimming pools and water parks objects on their functionality, building form and spatial-visual effects indoors.
PublikacjaSpeaking about architecture of swimming facilities and water parks we have in mind their form, function , design and detail, texture and color. A particularly important element of the architecture of these buildings was and still is the structure.
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Microbiota-derived metabolites in colorectal cancer patients in preoperative period
PublikacjaShort-chain fat-ty acids (SCFAs) are microbial derived metabo-lites, which have multiple beneficial properties. The amount of SCFAs depends on several fac-tors, such as age, diet (mainly intake of dietary fiber), and overall health condition. The normal proportion between SCFAs is 3:1:1 for acetate, proprionate and butyrate, respectively. In col-orectal cancer (CRC) patients, microbiota alter-ations have been shown. Consequently,...
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Copper(I) iodide ribbons coordinated with thiourea derivatives
PublikacjaTwo products of the reactions of CuI with 1-benzoyl-3-(4-bromophenyl)thiourea and with 1-benzoyl-3-(2-iodophenyl)thiourea have been obtained and characterized, namely poly[[[1-benzoyl-3-(4-bromophenyl)thiourea-κS]-µ3-iodidocopper(I)] acetone hemisolvate], {[CuI(C₁₄H₁₁BrN₂OS)]‧0.5C₃H₆O}ₙ, and poly-[µ₄-iodido-µ₃-iodido-[N-(benzo[d]thiazol-2-yl)benzamide-κN]dicopper(I)], [Cu₂I₂(C₁₄H₁₀N₂OS)]ₙ. Their structures, determined by single-crystal...
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Performance evaluation of the parallel object tracking algorithm employing the particle filter
PublikacjaAn algorithm based on particle filters is employed to track moving objects in video streams from fixed and non-fixed cameras. Particle weighting is based on color histograms computed in the iHLS color space. Particle computations are parallelized with CUDA framework. The algorithm was tested on various GPU devices: a desktop GPU card, a mobile chipset and two embedded GPU platforms. The processing speed depending on the number...
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On-line P-coloring of graphs
PublikacjaFor a given induced hereditary property P, a P-coloring of a graph G is an assignment of one color to each vertex such that the subgraphs induced by each of the color classes have property P. We consider the effectiveness of on-line P-coloring algorithms and give the generalizations and extensions of selected results known for on-line proper coloring algorithms. We prove a linear lower bound for the performance guarantee function...
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Magnetizabilities of relativistic hydrogenlike atoms in some arbitrary discrete energy eigenstates
PublikacjaWe present the results of numerical calculations of magnetizability of the relativistic hydrogenlike atoms. Exploiting the analytical formula for $\chi$ we have found the values of the magnetizability for the ground state and for the first and the second set of excited states of the atom. The results for ions with the atomic number $0
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Cost efficiency of administrative service in public higher education in Poland
PublikacjaPurpose: The aim of the study is to determine changes in the cost efficiency of the administration of public higher education in Poland. Design/methodology/approach: The biennial cost Malmquist productivity index was used to study changes in cost efficiency of 58 public higher education institutions in 2014-2016. The results were...
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Antitumor Activity of Triazine Mimic Antibiotics for DNA-binding Implications (Impressive Activity in Vitro Against a Variety of Tumor Types in the NCI-60 Screen): NSC 710607 To Fight HCT-116 Human Colon Carcinoma Cell Lines in Vivo Using the Hollow Fiber Assay and Xenograft Mouse Models
PublikacjaPurpose Successful clinical applications of DNA-directed selective cytotoxic agents disrupt the vital replication/transcription processes and ultimately lead to cancer cell death. This study aimed to examine the growth screen of two lead triazine compounds in a number of cell lines and xenografts and to develop anticancer agents with noncovalent binding affinity bringing fewer side effects. Methods The NCI initial hollow...
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Raman investigation of hybrid polymer thin films
PublikacjaPrzestawiono problemy diagnostyki ramanowskiej transparentnych struktur cienkowarstwowych wykonanych metodą zol-żel z polimerów hybrydowych. Analizowano możliwości badania struktury molekularnej i grubości, a także określania jakości wykonania struktur falowodowych. Przedstawiono wyniki badań wykonanych mikroskopem ramanowskim dla polimerowych struktur cienkowarstwowych osadzonych na podłożach szklanych i krzemowych.
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Raman system for monitoring of dye doping to hybrid polymer network
PublikacjaZrealizowano i przedstawiono system ramanowski do zdalnego monitorowania procesu zol-żel, dedykowany do monitorowania procedury wprowadznia cząstek barwnika do sieci polimeru hybrydowego. System umożliwia wykonywanie pomiarów zdalnych, bez zakłócania i przerywania przebiegu procesu technologicznego. Zademonstrowano i skomentowano wyniki pomiarów dla przykładowego procesu.
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Michał Bernard Pietrzak dr hab.
OsobyMichał Bernard Pietrzak jest kierownikiem Katedry Statystyki i Ekonometrii na Wydziale Ekonomii i Zarządzania Politechniki Gdańskiej oraz zastępcą redaktora naczelnego ds. oceny pod względem poprawności statystycznej czasopism: Oeconomia Copernicana i Equilibrium. Quarterly Journal of Economics and Economic Policy. Do października 2021 pracował na stanowisku profesora nadzwyczajnego na Wydziale Nauk Ekonomicznych i Zarządzania,...
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Diamenty w kolorach fantazyjnych–charakterystyka walorów inwestycyjnych
PublikacjaW artykule scharakteryzowano czynniki determinujące stopę zwrotu z inwestycji w diamenty w kolorach fantazyjnych. Cel opracowania to wskazanie kryteriów, które decydują o przypisaniu do konkretnego diamentu określonej barwy. Ponadto w pracy zbadano, jak barwa, ton oraz nasycenie wpływają na wycenę diamentów w kolorach fantazyjnych. Co więcej, za pomocą regresji hedonicznej zbadano, jak zmieniła się wartość analizowanych kamieni...
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MXene-based composites for capacitive deionization – The advantages, progress, and their role in desalination - A review
PublikacjaMXenes, a novel large family of 2D transition metal carbides, carbonitrides and nitrides are currently a “hot topic” in science due to their several fascinating physical and chemical properties. It follows from a rich diversity of their elemental compositions and chemical functionalities. MXenes can form composites with many substances, including polymers or metal oxides, which allows to effective “tune” MXene characteristics to...
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A comparative analysis of phenotypic and genotypic methods for the determination of the biofilm-forming abilities of Staphylococcus epidermidis
PublikacjaThe collection of 146 Staphylococcus epidermidis strains isolated from the nasopharynx of lung cancer patients has been studied for the ability of slime secretion and biofilm formation using the Congo red agar (CRA) test and the microtiter plate (MtP) method, respectively. The prevalence of the icaAD and the aap genes was also analyzed. Some isolates (35.6%) were biofilm positive by the MtP method, while 58.9% of isolates exhibited...
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Stability Assessment of Coastal Cliffs Incorporating Laser Scanning Technology and a Numerical Analysis
PublikacjaWe investigated the cli coast in Jastrzebia Gora, Poland. The measurements that were taken between 2014 and 2018 by applying terrestrial, mobile, and airborne laser scanning describe a huge geometric modification involving dislocations in a 2.5 m range. Dierential maps and a volumetric change analysis made it possible to identify the most deformed cli’s location. Part of the monitoring of coastal change involved the measurement...
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A simplified approach to determine the expiration date of certified reference material based on the results of monitoring long-term stability
PublikacjaAll components of the quality assurance (QA) system for measurement results depend heavily on certified reference materials (CRMs). There is a need for a comprehensive discussion of the stability study using the CRM statistical method. Monitoring involves periodic sampling and analysis of the CRM at predetermined intervals to continuously monitor stability without compromising its integrity. The obtained stability data is then...
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A comparative analysis of phenotypic and genotypic methods for the determination of the biofilm-forming abilities of Staphylococcus epidermidis
PublikacjaThe collection of 146 Staphylococcus epidermidis strains isolated from the nasopharynx of lung cancer patients has been studied for the ability of slime secretion and biofilm formation using the Congo red agar (CRA) test and the microtiter plate (MtP) method, respectively. The prevalence of the icaAD and the aap genes was also analyzed. Some isolates (35.6%) were biofilm positive by the MtP method, while 58.9% of isolates exhibited...
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Dualizm znaczeniowy i niejednoznaczność stopni alarmowych w ustawie o działaniach antyterrorystycznych
PublikacjaDługo oczekiwana ustawa z 10 czerwca 2016 r. o działaniach antyterrorystycznych wprowadziła do polskiego systemu prawnego — prawa powszechnie obowiązującego — instytucję stopni alarmowych. Niestety w ustawie tej spotykamy jednobrzmiące sformułowanie „stopnie alarmowe” w dwojakim rozumieniu, raz jako komplet ośmiu stopni, o których mowa w ustawie, innym razem jako cztery stopnie alarmowe: Alfa, Brawo, Charlie, Delta. Dodatkowo...
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Influence of Diosmin Treatment on the Level of Oxidative Stress Markers in Patients with Chronic Venous Insufficiency
PublikacjaOxidative stress plays an important role in the pathophysiology of many human disorders, while antioxidants prevent the development of various adverse symptoms. Diosmin is a natural flavonoid applied in vascular system disorders, especially in chronic venous insufficiency (CVI), and it plays a significant part in the alleviation of CVI symptoms. Due to antioxidant activity, it also has the ability to scavenge the oxygen free radicals...
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Manganese(II) tri-tert-butoxysilanethiolate complexes with imidazole based coligands. A neutral complex with four independent ligands and MNOS2 core (M=Mn) related to the liver alcohol dehydrogenase catalytic center (M=Zn)
PublikacjaReakcja silanotiolanu manganu(II) z imidazolem oraz dwiema jego metylowymi pochodnymi prowadzi do uzyskania kompleksów heteroleptycznych o różnym typie. Gdy do syntez wykorzystano 2-metyloimidazol uzyskano związek zawierający w komórce elementarnej dwie różniące się od siebie cząsteczki, powiązane wiązaniami wodorowymi typu N-H…S. W jednej z tych molekuł centralny atom manganu jest skoordynowany z czterema ligandami: dwoma podstawnikami...
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Cadmium accumulation by Phragmites australis and Iris pseudacorus from stormwater in floating treatment wetlands microcosms: Insights into plant tolerance and utility for phytoremediation
PublikacjaEnvironmentally sustainable remediation is needed to protect freshwater resources which are deteriorating due to severe industrial, mining, and agricultural activities. Treatment by floating wetlands could be a sustainable solution to remediate water bodies. The study aimed to examine the effects of Cd on Phragmites australis and Iris pseudacorus growth (height, biomass, root length and chlorophyll contents), anatomy, Cd accumulation...
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Ellipsometric study of carbon nitride films deposited by DC-magnetron sputtering
PublikacjaWe report the optical properties of a carbon nitride (CNx) film as a function of nitrogen concentration (N/C) of the deposited film. As nitrogen concentration is increased (N/C ratio) in a CNx film, the refractive index and band gap also increase. The real and imaginary parts, n and k (refractive index and extinction coefficient) of the complex refraction index of carbon nitride films were determined by spectroscopic ellipsometry...
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Janusz Datta prof. dr hab. inż.
OsobyJanusz Datta w roku 1988 ukończył studia na Wydziale Chemicznym Politechniki Gdańskiej. Po ich zakończeniu został zatrudniony na Wydziale Chemicznym w Zakładzie, a potem po reorganizacji, w Katedrze Technologii Polimerów, gdzie przez sześć lat pracował na stanowisku naukowo-technicznym. W tym okresie zdobywał doświadczenie uczestnicząc w licznych wyjazdach do Zakładów Chemicznych „Zachem” Bydgoszcz, gdzie brał udział w pracach...
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Low-Cost Surrogate Modeling of Miniaturized Microwave Components Using Nested Kriging
PublikacjaIn the paper, a recently reported nested kriging methodology is employed for modeling of miniaturized microwave components. The approach is based on identifying the parameter space region that contains high-quality designs, and, subsequently, rendering the surrogate in this subset. The results obtained for a miniaturized unequal-power-split rat-race coupler and a compact three-section impedance transformer demonstrate reliability...
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Dia- and paramagnetic contributions to magnetizabilities of relativistic hydrogenlike atoms in some low-lying discrete energy eigenstates
PublikacjaIn this paper we present tabulated data for relative diamagnetic and paramagentic contributions to the magnetizability ($\chi$) of the relativistic hydrogenlike atoms with a pointlike, motionless and spinless nucleus of charge $Ze$. Utilizing general analytical formulas for the diamagnetic ($\chi_{d}$) and paramagnetic ($\chi_{p}$) components of $\chi$, recently derived by us [P. Stefa{\'n}ska, 2020] with the aid of the Gordon...
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GIST - Female, 78 - Tissue image [5040730020286821]
Dane BadawczeThis 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 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.