Search results for: PCBS
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Microstructural Design of Ba0.5La0.5Co0.5Fe0.5O3 Perovskite Ceramics
PublicationBa0.5La0.5Co0.5Fe0.5O3 was synthesized in the solid-state reaction route. The influence of ball milling parameters (such as milling media size, angular velocity, and time), pelletizing pressure, and annealing parameters on the microstructure was studied. The grain size distribution and density or specific surface area changes were investigated in each approach while the individual parameters were changed. The evaluation of BLCF...
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Highly stable CsFAPbIBr perovskite solar cells with dominant bulk recombination at real operating temperatures
PublicationMixed-cation mixed-halide perovskite solar cells have been characterized in DC at different temperatures (from −20 °C up to 50 °C) and the time evolution of the device efficiency has been assessed using different degradation protocols (indoors and outdoors). The completely planar p–i–n structure is ITO/CuNiOx/PTAA/CsFAPbIBr/PCBM/PEI/Ag. Pristine current–voltage characteristics barely show hysteresis, at any temperature. Open circuit...
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Effect of crystallinity on structural, thermal, and in vitro dissolution properties of Na2O-CaO-Nb2O5/MgO-P2O5 glass-ceramics
PublicationThe impact of the crystallinity on structural, thermal, and in vitro dissolution properties were examined for Na2O- CaO-Nb2O5/MgO-P2O5 glasses/glass-ceramics. Glass-ceramics were synthesized via a spontaneous crystallization process. The Nb content in the materials increased with melting temperature, furthermore, the crystallinity is proportional to the Nb content. The presence of crystalline niobates and phosphates is confirmed...
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Antifungal activity of L-homoserine O-acetyltransferase (CaMet2p) inhibitors.
Open Research DataThe dataset contains a set of optical densities at 600 nm measured at microplate reader to determine the rate of fungal growth in the presence of Candida albicans homoserine O-acetyltransferase inhibitors. Antifungal activities were determined against several strains from Candida spp. and others by the modified M27-A3 method specified by the CLSI. We...
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The impact of cold plasma on the phenolic composition and biogenic amine content of red wine
PublicationThe effect of cold plasma (CP) on phenolic compound (PC) and biogenic amine (BA) contents of red wine was investigated for the first time. The influence of CP was compared with the effects of a wine preservation using potassium metabisulfite and a combined method. The PC profile was determined by UPLC-PDA-MS/MS while BAs using DLLME-GC–MS. Chemometric analysis also was used. The content of PCs was 3.1% higher in the sample preserved...
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The assessment of microbiological antimicrobial properties of PE film loaded with nanozinc filler
Open Research DataThe dataset contains the results of a single series of determinations of the antimicrobial properties against E. coli and S. aureus of polyethylene films containing the nanozinc filler.
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Caffeine detection using CB-PLA electrode after Nd:YAG laser ablation in He atmosphere
Open Research DataThe dataset contains electrochemical studies in form of cyclic voltammetry (CV) and differential pulse voltammetry (DPV) of laser-activated 3D printed CB-PLA electrodes. The ablation of the 3D-printed CB-PLA electrodes was carried out using a pulsed LaserBlast 500 Nd:YAG laser (Quantel, France) operating at 1064 nm and a 6 ns pulse duration.
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Long term measurements of PM1, PM2.5, PM10 and NO2 in open-air at Gdansk (Poland) area using low-cost sensors together with the reference results
Open Research DataThe measurements results of open-air measurements made using the following low-cost sensors: particulate matter (PM) sensor SPS30 from Sensirion, NO2 electrochemical sensor SGX-7NO2 from SGX Sensortech, NO2 electrochemical sensor 7E4-NO2 from SemaTech, compact MOS air quality sensor MiCS 2714 from SGX Sensortech, BME280 (Bosch) environmental sensor...
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Methods for determining pesticides and polychlorinated biphenyls in food samples-problems and challenges
PublicationW związku z koniecznością oznaczania szeregu zanieczyszczeń w próbkach środowiskowych i biologicznych, doszło do rozwoju licznych technik i metod analitycznych. Pomimo tych osiągnięć przed analityką nadal stoją liczne wyzwania. Jednym z nich jest oznaczanie pozostałości pestycydów i PCB w próbkach żywności. Najbardziej zaawansowane metody analityczne składają się z wielu etapów, co przekłada się, przede wszystkim, na duże nakłady...
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An electrochemical biosensor for the determination of hormone Human Chorionic Gonadotropin (hCG) in human serum
PublicationThis work describes the modification of a gold electrode to create an electrochemical biosensor capable of detecting human chorionic gonadotropin (hCG). The biosensor was obtained by modifying the gold electrode with cysteamine and oligopeptide (PPLRINRHILTR). The modification steps of the gold electrode were confirmed by cyclic voltammetry (CV) and impedance electrochemical spectroscopy (EIS) measurements. The conducted EIS experiments...
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An analysis of pesticides and polychlorinated biphenyls in biological samples and foods.
PublicationPestycydy i polichlorowane bifenyle występują w środowisku w małych ilościach, ale ulegając kumulacji, stanowią zagrożenie dla ludzi i zwierząt. Najbardziej zagrożony jest człowiek stojący na szczycie łańcucha pokarmowego. Świadomość niebezpieczeństw jakie niesie ze sobą postępujące zanieczyszczenie środowiska w połączeniu z nowoczesnymi środkami zaradczymi powinna zmniejszyć do minimum możliwość występowania zatruć u ludzi i powstania...
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The electrochemical response to Au electrode modification steps towards viral electrochemical immunosensor preparation
Open Research DataThe dataset contains the electrochemical measurements (CV/EIS) carried out for the consecutive steps of the Au electrode functionalization, in separate subfolders, as described. The cyclic voltammetry (CV) was conducted using a Palmsens 4 potentiostat/galvanostat system (Methrom, Autolab, Netherlands) in the standard three-electrode configuration, with...
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The standard radiated immunity test of an astable multivibrator at a normative field strength
Open Research DataThe dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator. Tests of immunity of electronic systems to radiated radio frequency (RF) disturbances in the frequency range from 80 MHz to 1 GHz are performed...
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The radiated immunity test of an astable multivibrator for various supply voltages
Open Research DataThe dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator supplied from a power supply with an output voltage of 6V and 7.5 V. Tests of immunity of electronic systems to radiated radio frequency (RF)...
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PLGrid Plus Dziedzinowo zorientowane usługi i zasoby infrastruktury PL-Grid dla wspomagania Polskiej Nauki w Europejskiej Przestrzeni Badawczej” – PLGrid Plus
ProjectsProject realized in Academic Computer Centre TASK according to - POIG.02.03.00-00-096/10 agreement from 2011-10-12
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PL-Grid n/d
ProjectsProject realized in Academic Computer Centre TASK from 2009-06-01
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The contactless method of chip-to-chip high-speed data transmission monitoring
PublicationThis paper presents a technique of decoupling differential signals transmitted in a pair of microstrip lines on a printed circuit board (PCB), using dedicated coupler for high speed data transmission monitoring in chip-to-chip interconnections. The coupler used for signal probing is overlayed on the pair of microstrip lines under test, and provides a signal to the next blocks of the measurement system without disturbing transmission...
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l-ascorbic acid modified poly(ester urethane)s as a suitable candidates for soft tissue engineering applications
PublicationIn this paper we created novel poly(ester urethane)s (PESUs) designed specifically for tissue engineering. The PESUs were derived from oligomeric α,ω-dihydroxy(ethylene-butylene adipate) (dHEBA), 1,4-butanediol (BDO) and aliphatic 1,6-hexamethylene diisocyanate (HDI) and modified with l-ascorbic acid to improve their biocompatibility. In addition, we determined their mechanical properties (such as tensile strength, elongation at...
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An Optimized Ka-Band Low Profile Dual-Polarized Transmitarray Antenna With 2D Beam Switching
PublicationThis article presents an optimized dual-polarized transmitarray antenna (TA) designed for MIMO applications at the Ka-band, capable of switching beams in two directions. The antenna aperture uses a small unit cell with three layers of Taconic RF-35 dielectric substrates, which can be easily fabricated using PCB technology. The unit cell achieved a 360-degree phase shift and a transmission magnitude exceeding –0.4 dB at 28 GHz....
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Studies on the formation of formaldehyde during 2-ethylhexyl 4-(dimethylamino)benzoate demethylation in the presence of reactive oxygen and chlorine species
PublicationIn order to protect the skin from UV radiation, personal care products (PCPS) often contain chemical UV-filters. These compounds can enter the environment causing serious consequences on the water ecosystems. The aim of this study was to examine, the effect of different factors, such as UV light, the presence of NaOCl and H2O2 on the formaldehyde formation during popular UV filter, 2-ethylhexyl 4-(dimethylamino)benzoate (ODPABA)...
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The radiated immunity test of an astable multivibrator at over-normative field strengths
Open Research DataThe dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator. Tests of immunity of electronic systems to radiated radio frequency (RF) disturbances in the frequency range from 80 MHz to 1 GHz were performed...
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Morphometric evaluation of the delayed cerebral arteries response to acetazolamide test in patients with chronic carotid artery stenosis using computed tomography angiography
PublicationBackground: The evidence accumulates that the response to acetazolamide test is delayed on the ipsilateral side to stenosis. However, the effect of acetazolamide beyond 30 minutes after acetazolamide administration remains unknown. The aim of this study was to assess the diameters of: anterior cerebral arteries (ACAs), middle cerebral arteries (MCAs) and posterior cerebral arteries (PCAs) before and 60 minutes after the acetazolamide...
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Some remarks on mobility, bioavaibility and location of pollutants in sediments
PublicationRemediacja osadów jest obecnie palącym problemem w wielu państwach intensywnie eksploatujących wody śródlądowe i morskie. Prowadzone badania sugerują, że zanieczyszcenia obecne w osadach nie są w całości dostępne dla bioty. Zatem zagadnienia mobilności, biodostępności i lokalizacji zanieczyszczeń mają duże znaczenie dla oceny ryzyka wynikającego z poziomu zanieczyszczenia osadów i ustanawiania dopuszczalnych stężeń. Wyniki prezentowane...
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Przegląd metod oznaczania pozostałości pestycydów i polichlorowanych bifenyli w próbkach żywności = Methods of determination of residues of pesticides and polychlorinated biphenyls in food samples - a review
PublicationOznaczanie pozostałości pestycydów i analitów z grupy polichlorowanych bifenyli w próbkach żywności wymaga zastosowania specyficznych technik w zakresie przygotowania próbki do analizy, jak i samych technik analizy instrumentalnej, pozwalających na uzyskanie bardzo niskiej granicy oznaczalności. Problemem związanym ze stosowaniem związków z grupy pestycydów i polichlorowanych bifenyli jest konieczność kontroli ich pozostałości...
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Investigation on Filaments for 3D Printing of Nasal Septum Cartilage Implant
PublicationSeptoplasty is a widely used method in treating deviated septum. Although it is successfully implemented, there are problems with excessive bleeding, septal perforation, or infections. The use of anatomically shaped implants could help overcome these problems. This paper focuses on assessing the possibility of the usage of a nasal septum cartilage implant 3D printed from various market-available filaments. Five different types...
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The electrochemical response to BDD electrode functionalization with CD147 receptor
Open Research DataThis dataset contains the results of the electrochemical impedance spectroscopy (EIS) measurements of the boron-doped diamond (BDD) electrode functionalization with CD147 receptor. The functionalized electrode was then used for the electrochemical detection of the SARS-CoV-2 virus S1 protein.
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The electrochemical response to BDD electrode functionalization with ACE2 receptor
Open Research DataThis dataset contains the results of the electrochemical impedance spectroscopy (EIS) measurements of the boron-doped diamond (BDD) electrode functionalization with ACE2 receptor. The functionalized electrode was then used for the electrochemical detection of the SARS-CoV-2 virus S1 protein.
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The electrochemical response to BDD electrode functionalization with IgG2B receptor
Open Research DataThis dataset contains the results of the electrochemical impedance spectroscopy (EIS) measurements of the boron-doped diamond (BDD) electrode functionalization with IgG2B receptor. The functionalized electrode was then used for the electrochemical detection of the SARS-CoV-2 virus S1 protein.
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Gold nanocubic structures agglomeration when put on conductive surfaces
Open Research DataThis dataset contains Dynamic EIS results obtained for the gold electrodes with non-functionalized gold nanocubes (AuNC) deposited at its surface. The deposition was the following: 2 uL of the solvent containing CTAB as the surfactant was put on the electrode and dried, the same procedure was applied 5 times. Afterward, the electrode was immersed in...
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The electrochemical studies of thin boron-doped diamond films deposited at conductive poly(lactic acid) 3D prints
Open Research DataThe dataset contains the electrochemical characteristics of the electrodes composed of thin boron-doped diamond films coated on commercially available graphene-doped polylactide acid. The boron doping level expressed as the [B]/[C] ratio in the gas phase for these studies was 500 and 10,000 ppm.
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AeroSense Measurements: Wind Tunnel EPFL
Open Research DataData from wind tunnel tests of Aerosesne measurement system installed on NACA63418 at EPFL wind tunnel.
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Light-improved glucose sensing on ordered Au-Ti heterostructure
PublicationNon-enzymatic electrochemical platforms sensitive towards glucose presence have attracted a worldwide attention during last decades. We report on influence of solar light onto response of gold-titanium heterostructures prepared via controllable approach. The material based on Au nanoparticles orderly distributed over the structured titanium foil was obtained by electrochemical anodization followed by chemical etching, magnetron...
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A Flexible Nafion Coated Enzyme‐free Glucose Sensor Based on Au‐dimpled Ti Structures
PublicationThe detection of glucose at low concentrations using electrochemical sensors is of great importance due to the possibility of using different human body fluids than blood, such as e.g. urine, saliva, sweat or tears. The interest behind those biofluids is related to their utility in non-invasive sugar determination. In this work, we present flexible, fully biocompatible electrode material based on Au nanoparticles immobilized onto...
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Ocena zmian jakości wód podziemnych piętra czwartorzędowego Gdańska w świetle ich poboru.
PublicationCelem pracy było przedstawienie i wyjaśnienie zmian jakości wód podziemnych jako konsekwencji procesów hydrogeochemicznych zachodzących w czwartorzędowym piętrze wodonośnym Gdańska w wyniku przekształcenia warunków hydrodynamicznych i określenie, jaki wpływ na te przemiany mają zróżnicowane warunki hydrogeologiczne. W tym celu, na podstawie zgromadzonych materiałów archiwalnych, odtworzono naturalne tło hydrogeochemiczne wód...
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Higher platelet counts correlate to tumour progression and can be induced by intratumoural stroma in non-metastatic breast carcinomas
PublicationBackground Platelets support tumour progression. However, their prognostic significance and relation to circulating tumour cells (CTCs) in operable breast cancer (BrCa) are still scarcely known and, thus, merit further investigation. Methods Preoperative platelet counts (PCs) were compared with clinical data, CTCs, 65 serum cytokines and 770 immune-related transcripts obtained using the NanoString technology. Results High normal...
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BeesyCluster: Architektura systemu dostepu do sieci klastrów przez WWW/Web Services.
PublicationNiniejsza praca prezentuje system BeesyCluster, który integruje rozproszone klastry poprzez łatwy w użyciu interfejs WWW oraz Web Services. W wersji pilotowej system uruchomiony zostanie w charakterze portalu dostępowego do klastrów gdańskiej sieci TASK wykorzystując 128-procesorowy klaster galera oraz 256-procesorowy 64-bitowy klaster holk jak również laboratoria badawcze Wydziału ETI Politechniki Gdańskiej. System, oparty o technologię...
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Wynik analizy a jakość informacji środowiskowej. Opracowanie monograficzne z uwzględnieniem prac własnych
PublicationNa proces uzyskiwania wiarygodnych informacji o zanieczyszczeniu środowiska mają zasadniczy wpływ dwa aspekty:- wybór właściwych parametrów do monitorowania poziomu zanieczyszczenia;- odpowiednia jakość wyników oznaczania parametrów wytypowanych do monitoringu środowiska.Wyniki badań, przedstawione w niniejszym opracowaniu monograficznym, ujawniły, że stosowane techniki izolacji związków z grupy WWA i PCB z próbek wody, nie mogą...
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BADANIA PILOTAŻOWE DRGAŃ NA WLOCIE DO SPRĘŻARKI TURBINY GAZOWEJ GTD 350
PublicationPodstawą diagnostyki maszyn wirnikowych są pomiary drgań ze względu na to że prawie wszystkie uszkodzenia maszyn powodują istotne zmiany wielkości je opisujących np. prędkości drgań. W eksploatacji maszyn wirnikowych najważniejsza jest ocena drgań obiektu na podstawie pomiarów wykonywanych na częściach niewirujących. Badania, których wyniki przedstawiono w referacie zostały przeprowadzone na stanowisku...
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Studies on Silver Ions Releasing Processes and Mechanical Properties of Surface-Modified Titanium Alloy Implants
PublicationDispersed silver nanoparticles (AgNPs) on the surface of titanium alloy (Ti6Al4V) and titanium alloy modified by titania nanotube layer (Ti6Al4V/TNT) substrates were produced by the chemical vapor deposition method (CVD) using a novel precursor of the formula [Ag5(O2CC2F5)5(H2O)3]. The structure and volatile properties of this compound were determined using single crystal X-ray diffractometry, variable temperature IR spectrophotometry...
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Two-step synthesis of niobium doped Na–Ca–(Mg)–P–Si–O glasses
PublicationNiobium doped biosolubility glasses in the Na–Ca–(Mg)–P–Si–O system were prepared by using an untypical two-step synthesis route. The parent glass was melted in air atmosphere at 1350 °C followed by re-melting the glass in Nb crucible with the addition of metallic Mg/Ca powder in the nitrogen atmosphere. The second melting step was carried out at 1450–1650 °C, using an induction furnace. The topography and structure of the obtained...
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Phospholipid-functionalized gold electrode for cellular membrane interface studies - interactions between DMPC bilayer and human cystatin C
PublicationThis work describes the electrochemical studies on the interactions between V57G mutant of human cystatin C (hCC V57G) and membrane bilayer immobilized on the surface of a gold electrode. The electrode was modified with 6-mercaptohexan-1-ol (MCH) and 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC). DMPC was used as a membrane mimetic for monitoring electrochemical changes resulting from the interactions between the functionalized...
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Screening stability, thermochemistry, and chemical kinetics of 3-hydroxybutanoic acid as a bifunctional biodiesel additive
PublicationThe thermo-kinetic aspects of 3-hydroxybutyric acid (3-HBA) pyrolysis in the gas phase were investigated using density functional theory (DFT), specifically the M06-2X theoretical level in conjunction with the cc-pVTZ basis set. The obtained data were compared with benchmark CBS-QB3 results. The degradation mechanism was divided into 16 pathways, comprising 6 complex fissions and 10 barrierless reactions. Energy profiles were calculated...
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Mode shapes of a beam and plate with defects, obtained by experimental modal analysis
Open Research DataThe DataSet contains the experimental results of the first mode shape for a beam and a plate.
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Polyurethanes Crosslinked with Poly(vinyl alcohol) as a Slowly-Degradable and Hydrophilic Materials of Potential Use in Regenerative Medicine
PublicationNovel, slowly-degradable and hydrophilic materials with proper mechanical properties and surface characteristics are in great demand within the biomedical field. In this paper, the design, synthesis, and characterization of polyurethanes (PUR) crosslinked with poly(vinyl alcohol) (PVA) as a new proposition for regenerative medicine is described. PVA-crosslinked PURs were synthesized by a two-step polymerization performed in a solvent...
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Folate/homocysteine metabolism and lung cancer risk among smokers
PublicationBackground: Folate and homocysteine are involved in DNA synthesis and methylation processes, which are deregulated during carcinogenesis. Objectives: The aim of this study was to assess the relationship between folate/homocysteine concentrations, the functional polymorphisms of folate/homocysteine genes and lung cancer risk among cigarette smokers. Study design: The study included 132 lung cancer patients and 396 controls from...
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Processing of Polyester-Urethane Filament and Characterization of FFF 3D Printed Elastic Porous Structures with Potential in Cancellous Bone Tissue Engineering
PublicationThis paper addresses the potential of self-made polyester-urethane filament as a candidate for Fused Filament Fabrication (FFF)-based 3D printing (3DP) in medical applications. Since the industry does not provide many ready-made solutions of medical-grade polyurethane filaments, we undertook research aimed at presenting the process of thermoplastic polyurethane (TPU) filament formation, detailed characteristics, and 3DP of specially...
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Chemia a zdrowa żywność : Dodatki i zanieczyszczenia żywności : problemy i wyzwania
PublicationPodstawowe składniki pożywienia to: tłuszcze, węglowodany, białka, składniki mineralne, w tym makroelementy i mikroelementy, witaminy oraz składniki bioaktywne. Niebezpiecznymi składnikami żywności mogą być: dodatki do żywności w trakcie procesu produkcji, substancje powstające w trakcie obróbki, organiczne i nieorganiczne zanieczyszczenia oraz substancje występujące w sposób naturalny, np. alkaloidy grzybowe. Stosowanie dodatków...
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PL-5G National Laboratory for Advanced 5G Research
ProjectsProject realized in Faculty of Electronics, Telecommunications and Informatics according to POIR.04.02.00-00-D008/20-00 agreement from 2020-12-29
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Synthesis and characterization of cycloaliphatic hydrophilic polyurethanes, modified with l-ascorbic acid, as materials for soft tissue regeneration
PublicationIn this paper we described synthesis and characteristic of obtained hydrophilic polyurethanes (PURs) modified with ascorbic acid (commonly known as vitamin C). Such materials may find an application in the biomedical field, for example in the regenerative medicine of soft tissues, according to ascorbic acid wide influence on tissue regeneration Flora (2009), Szymańska-Pasternak et al. (2011), Taikarimi and Ibrahim (2011), Myrvik...
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Frequency Response Functions for Sandvik CoroBore 825 XL boring tool, 733 mm
Open Research DataFrequency Response Functions (FRF) obtained for Sandvik CoroBore® 825 XL mounted at WHN 13-15 TOS VARNSDORF CNC machine at the minimum extension of the spindle adaptor. Tool set to bore a hole with a diameter 733mm