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Search results for: REMOTELY OPERATED ROBOT VEHICLE, CHEMICAL WARFARE AGENT, UNEXPLODED ORDNANCE DISPOSAL
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Physical, Chemical and Biological Changes in the Gulf of Gdańsk Ecosystem (Southern Baltic Sea).
PublicationPrzedstawiono fizyczne, chemiczne i biologiczne zmiany zachodzące w ekosystemie Zatoki Gdańskiej (Południowy Bałtyk. Opisano klimat (temp. wody, opady poziom morza, zasolenie), fluktuację stężeń związków biogennych (azotany,fosforany, krzemiany), poziom organicznych zanieczyszczeń (POP´s, PcB´, pestycydy, WWA) oraz zmiany w biologicznym życiu morza.
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Elimination of the chemical and microbiological pollutants in the modernized watewater treatment plant ''Wschód'' in Gdańsk.
PublicationW artykule przedstawiono wyniki 2 letnich, kompleksowych badań efektywności zanieczyszczeń chemicznych, mikrobiologicznych i parazytologicznych w zmodernizowanej oczyszczalni ścieków ''Wschód'' w Gdańsku. Oceniono wpływ funkcjonowania układu generowania lotnych kwasów tłuszczowych na skuteczność usuwania związków biogennych oraz jego oddziaływanie na eliminację zanieczyszczeń biologicznych z oczyszczonych ścieków
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Centre of Excellence in Envirinmental Analysis and Monitoring at the Chemical Faculty of the Gdańsk University of Technology.
PublicationPrzedstawiono działalność Centrum (CEEAM) utworzonego 01.01.2003 na Wydziale Chemicznym PG. Opisano cel powstania, zrealizowane zadania i plany.
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Balance of pesticides mass in gas, liquid and solid phase after their chemical degradation.
PublicationOpisano metodę usuwania pestycydów z wody przy zastosowaniu fotodegradacji (UV) i katalizatora (TiO2). Efektywność procesu usuwania pestycydów była kontrolowana przy zastosowaniu chromatografu gazowego z detektorem wychwytu elektronów. Oznaczano zawartość pestycydów w wodzie, a także zaadsorbowanych na powierzchni stałej, oraz w fazie gazowej. Największa zawartość pestycydów znajdowała się na fazie stałej, następnie w cieczy i...
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Characteristics, Chemical Modification Processes as well as the Application of Silica and its Modified Forms
PublicationThe variety of chemical modifications of the surface of silica and its modified forms cause thesematerials to find a consistently wider scope of application. In the publication, the characteristicsof silica, silica gel, aerogel and xerogel are presented. The obtainment, application and propertiesof these materials are discussed. Methods of chemical modifications of surface structures withthe use of different chemical compounds...
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Effect of chemical composition and microstructure on mechanical properties of BA1055 bronze sand castings.
PublicationW pracy wykazano, że nawet małe zmiany w składzie chemicznym brązu aluminiowego BA1055 mają istotny wpływ na strukturę i właściwości mechaniczne odlewów. Określono wpływ wydzieleń międzymetalicznej fazy κ na właściwości odlewów z brązu BA1055 stosowanego na pędniki okrętowe.
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Solvent effects on the nitrogen NMR chemical shifts in 1-methylazoles – a theoretical study
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Theoretical analysis of solvent effects on nitrogen NMR chemical shifts in oxazoles and oxadiazoles
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Physical, chemical and biochemical properties of Western Siberia Sphagnum and Carex peat soils
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Chemical Munitions Search & Assessment—An evaluation of the dumped munitions problem in the Baltic Sea
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The Use of Chemical Sensors to Monitor Odour Emissions at Municipal Waste Biogas Plants
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Chemical Derivatization Processes Applied to Amine Determination in Samples of Different Matrix Composition
PublicationAmines are important biological compounds, and so their analysis and monitoring in various matrices is worthy of investigation and development.Due to the polar nature of amines, chromatographic analysis of free amines is generally unsatisfactory owing to adsorption and decomposition of the solute on the column, resulting in peak tailing and losses. Therefore, many derivatization reactions are employed to reduce the polarity, improve...
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Chemical, thermal and laser processes in recycling of photovoltaic silicon solar cells and modules
PublicationIn recent years, photovoltaic power generation systems have been gaining unprecedented attention as an environmentally beneficial method to solve the energy problem. From the economic point of view the pure silicon, which can be recapture from the used cells, is the most important material due to its cost and shortage. In the paper selected methods of used or damaged module and cells recycling and experimental results are presented....
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Anion recognition by phosphonium calix[4]arens: synthesis and physico-chemical studies
Publicationp-tert-butylcalix[4]arenes in the cone conformation, di-and tetra substituted at the narrow rim with charged phosphonium groups have been synthesies and characterised.
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Determination of the chemical structure of potencial organic impurities occuring in the drug substance opopramol
PublicationThe tricyclic antipsychotic and antidepressant drug opipramol was examined with regard to the chemical structure of its organic impurities. Impurities were isolated from the technical product by chromatographic methods and their chemical structures were estabilished by HMNR, MS and FTIR.
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Optical and chemical characterization of thin TiNx films deposited by DC-magnetron sputtering
PublicationThin titanium nitride (tinx) films were deposited on silicon substrates by means of a reactive dc-magnetron plasma. Layers were synthesized under various conditions of discharge power and nitrogen flows in two operation modes of the magnetron (the so-called "balanced" and "unbalanced" modes). The optical constants of the tinx films were investigated by spectroscopic ellipsometry (se). X-ray photoelectron spectroscopy (xps) was...
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Raman Spectra Measurements for Chemical Identifications - Aspect of Uncertainty Sources and Reduction of Their Effects
PublicationRaman spectrometers enable fast and non-contact identification of examined chemicals. These devices measure Raman spectra and compare with the spectra database to identify unknown and often illicit chemicals (e.g. drugs, explosives) usually without any sample preparation. Raman spectra measurements are a challenge due to noise and interferences present outside the laboratories (field applications). The design of a portable Raman...
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Description of plants and assessment of chemical properties of three species from the Amelanchier genus
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Effect of substrate type on the field performance and chemical composition of highbush blueberry cv.Patriot
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Chemical modification of tannins from Acacia mearnsii to produce formaldehyde free flocculant
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A Comprehensive Review on Shilajit: What We Know about Its Chemical Composition
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Preparation and characterization of silk fibroin/collagen sponge modified by chemical cross-linking
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INFLUENCE OF THE INTERMOLECULAR INTERACTION ON PHYSICO-CHEMICAL PROPERTIES OF CHITOSAN/HYALURONIC ACID BLENDS
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The Effects of Cross-Link Density and Chemical Exchange on Magnetization Transfer in Polyacrylamide Gels
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The Impact of Effective Microorganisms on Flesh Color and Chemical Composition of Raw Potato Tubers
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Uncertainty in maritime risk analysis: Extended case study on chemical tanker collisions
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Phthalocyanines with bulky substituents at non-peripheral positions – Synthesis and physico-chemical properties
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Influence of Hydrogenation on Morphology, Chemical Structure and Photocatalytic Efficiency of Graphitic Carbon Nitride
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Phytoplankton communities of polar regions–Diversity depending on environmental conditions and chemical anthropopressure
PublicationThe polar regions (Arctic and Antarctic) constitute up to 14% of the biosphere and offer some of the coldest and most arid Earth's environments. Nevertheless several oxygenic phototrophs including some higher plants, mosses, lichens, various algal groups and cyanobacteria, survive that harsh climate and create the base of the trophic relationships in fragile ecosystems of polar environments. Ecosystems in polar regions are characterized...
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Chapter 11 – Application of Chemical Sensors and Sensor Matrixes to Air Quality Evaluation
PublicationIndoor and outdoor air quality is one of the key factors influencing human health. However, air quality evaluation is not easy task. Air is a complex system, which is subjected to changes even within short period of time. Progress in analytical methods and analytical tools provides increasingly more reliable information on the condition and quality of indoor and outdoor air. This progress, however, generates an increase in the...
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A novel luminescent chemical sensor for the determination of Pb 2+ and Cu 2+ ions
PublicationSilica xerogel surface grafted with aminopropyl (PrNH2) groups was additionally treated by cetyltrimethylammonium bromide (CTAB) surfactant and ascorbic acid (asc) in alkaline solution. This material symbolized as SiO2-PrNH2-CTAB/asc, proved to be a stable luminescent material, exhibited an emission band peaked at 393 nm under excitation wavelength 335 nm. Time evolution of the band intensity suggests changes of defect concentration...
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TEST METHOD FOR DETERMINING THE CHEMICAL EMISSIONS OF A MARINE DIESEL ENGINE EXHAUST IN OPERATION
PublicationThe article briefly describes the problem of air pollution caused by sea-going ships and the resulting restrictions on the emission of toxic and harmful chemical compounds in the exhaust of marine engines, introduced by the International Maritime Organization (IMO) under the International Convention for the Prevention of Sea Pollution from Ships (MARPOL 73/78). Such emissions provide a significant metrological problem, not only...
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The chemical and mechanical pressure influence on chromium luminescence
Open Research DataIn this study, we aim to compare the changes in the luminescence properties of Ga2O3:Cr3+ modified by Al or Sc ion substitution (chemical pressure) and hydrostatic pressure. We find the same behavior for Ga2–xAlxO3:Cr3+ and different behavior for Ga2–xScxO3:Cr3+ in terms of the optical properties under chemical and mechanical pressure. We consider Al...
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Analysis of the chemical composition of MnO-B2O3 glass
Open Research DataStructural and thermal properties of xMnO−(100−x)B2O3 (where x = 40, 50 and 60 mol%) glass samples have been investigated with the employment of various techniques. Fourier transform infrared spectroscopy results revealed the influence of MnO on glass matrix. Decrease of B–O bond-related band intensities has been observed. MnO addition was found to...
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Chemical investigation of the Al2O3 ultra-thin films
Open Research DataUltra-thin layers of oluminum oxide (Al2O3) were deposited by ALD method. Atomic layer deposition provides precise thickness control down to a single atomic layer. The precursors used were trimethylaluminum (Sigma-Aldrich) and purified water. The deposition of the atomic layer was carried out at 200 °C. Samples with a thickness of 2 and 8 nm of alumina...
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Chemical properties of bismuth telluride – carbon composites.
Open Research DataCarbon nanotubes and amorphous carbon have been introduced into bismuth telluride matrix (in 0.15 and 0.30 wt % ratio) in order to investigate influence of carbon on composite’s thermoelectric properties. Composites with well-dispersed additives have been obtained by sonication and ball-milling. Chemical composition of materials was confirmed by XPS...
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A New Metric for Long-Range Transport Potential of Chemicals
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Nuclear Magnetic Resonance data for the synthesis of esterase cleavable antifungal conjugates containing fatty acids as molecular carriers
Open Research DataNMR data for novel organic compounds - conjugates composed of C2-18 fatty acid (FA) residues as a molecular carrier and 5-fluorocytosine (5-FC) as an active agent, released upon the action of intracellular esterases on the ester bond between FA and “trimethyl lock” intramolecular linker.
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Large red cyanobacterial mats (Spirulina subsalsa Oersted ex Gomont) in the shallow sublittoral of the southern Baltic
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Wyznaczanie parametrów modelu obwodowego maszyny komutatorowej prądu przemiennego z wykorzystaniem programu polowego Opera3D
PublicationW referacie przedstawiono liniowy model matematyczny silnika komutatorowego z więzami holonomicznymi. Taki model wymaga zastosowania większej liczby stopni swobody, ale umożliwia uwzględnienie asymetrii i zjawisk zachodzących w zestyku ślizgowym. W modelu tym wymagane są macierze indukcyjności, które uwzględniają sprzężenia magnetyczne pomiędzy elementarnymi cewkami. Do wyznaczenia tych macierzy zastosowano program Opera3D. Aby...
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Logistyka robót budowlanych. Projektowanie i realizacja zgodne z systemem zarządzania jakością ISO 9000
PublicationProjektowanie i zarządzanie w budownictwie dotyczy nie tylko samej realizacji określonego obiektu inżynierskiego, ale jest też ściśle związane z planowaniem logistycznym. Logistyka przedsięwzięcia budowlanego polega na zaprojektowaniu m.in. placu budowy, planu transportu zamówień oraz sposobu przemieszczania na terenie budowy zarówno pojazdów, materiałów, jak i pracowników. W artykule przedstawiono ideę systemu zarządzania jakością...
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Propozycja modelowania nakładów czasu pracy podczas realizacji robót budowlanych w trudnych warunkach atmosferycznych
PublicationW artykule przedstawiono propozycję wyznaczenia kosztów i robocizny robót budowlanych wykonywanych w niesprzyjających warunkach atmosferycznych. W tym zakresie autorzy starają się odpowiedzieć na pytanie: czy jest pewna zdroworozsądkowa granica określona np. przez temperaturę względem której możemy w sposób bezpieczny i ekonomiczny prowadzić roboty budowlane. Jeżeli uda się ją wyznaczyć, to będzie można odpowiedzieć na pytanie,...
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STEROWANIE RAMIENIEM ROBOTA Z WYKORZYSTANIEM DANYCH Z KAMERY CYFROWEJ I MECHANIZMÓW SZTUCZNEJ INTELIGENCJI
PublicationPierwotnym zamysłem zespołu było stworzenie uniwersalnego systemu grającego w gry planszowe. Mierząc się z tym problemem, postanowiono zrobić jednak coś więcej - wywrócić dotychczasową koncepcję pracy użytkownika z komputerem „do góry nogami” i nie zmuszać użytkownika do nauki interfejsu, a zmusić system do współpracy z interfejsem, który rozumie użytkownik. Dokonane zostało więc przejście ze świata wirtualnego do świata rzeczywistego...
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Nadzorowanie drgań robota IRb-6 za pomocą sterowania modalnego przy energetycznym wskaźniku jakości.
PublicationW pracy rozważa się drgania modelowanego dyskretnie niestacjonarnego układu nośnego manipulatora IRb-6 metodą sztywnych elementów skończonych. Do nadzorowania drgań wykorzystano algorytm sterowania modalnego przy energetycznym wskaźniku jakości. Uwzględnia on zmianę w czasie, względem trajektorii ruchu zadanego, energii potencjalnej, kinetycznej oraz energii sygnału sterującego.
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Określanie parametrów rozkładów eksploatacyjnych obciążeń napędu własnego pogłębiarek ssących nasiębiernych podczas robót pogłębiarskich
PublicationArtykuł przedstawia propozycję metody określania parametrów rozkładów eksploatacyjnych obciążeń jednego z najważniejszych odbiorników energii mechanicznej na pogłębiarkach ssących nasiębiernych-śrub napędowych. Metoda, wykorzystująca wyniki własnych badań eksploatacyjnych, odnosi się do dwóch podstawowych czynności (stanów eksploatacji) wykonywanych podczas robót pogłebiarskich, a mianowicie do stanu nazywanego załadunkiem ładowni...
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The influence of synthesis method on the microstructure and catalytic performance of Y 0.07 Sr 0.93 Ti 0.8 Fe 0.2 O 3-δ in synthetic biogas operated solid oxide fuel cells
PublicationThe Y0.07Sr0.93Ti0.8Fe0.2O3-δ (YSTF) material was fabricated using three different synthesis methods: modified polymer precursor method (MPP), Pechini method and a solid state reaction method. It was applied as an anode catalytic material for biogas reforming in solid oxide fuel cells. Clear differences in the microstructure of fabricated catalytic layers were found, mainly with respect to a grain size and distribution of grains....
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Monitoring of Selected CBRN Threats in the Air in Industrial Areas with the Use of Unmanned Aerial Vehicles
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ONLINE DISTRIBUTION OF INSURANCE OF CIVIL LIABILITY OF OWNERS OF VEHICLES, THE EXPERIENCE OF POLAND, OPPORTUNITIES OF UKRAINE
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Estimating the Average Speed of Public Transport Vehicles Based on Traffic Control System Data
PublicationIntelligent Transport Systems are a valuable source of traffic information, covering both private and public vehicles. The main problem, however, is that very few studies are conducted to determine the speed of buses, trams and trolleys in urban networks in relation to traffic conditions. The paper investigates how ITS systems data could be used to model the speed of Public Transport vehicles. This is now possible thanks to the...
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Nanoparticle Tracking Analysis of Urinary Extracellular Vesicle Proteins as a New Challenge in Laboratory Medicine
PublicationUrinary extracellular vesicle (uEV) proteins may be used as specific markers of kidney damage in various pathophysiological conditions. The nanoparticle-tracking analysis (NTA) appears to be the most useful method for the analysis of uEVs due to its ability to analyze particles below 300 nm. The NTA method has been used to measure the size and concentration of uEVs and also allows for a deeper analysis of uEVs based on their protein...