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Search results for: RIEMANN SOLVER
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Microorganisms in the air over wastewater treatment plant.
PublicationCelem pracy było aktywności źródeł emisji mikroorganizmów do powietrza na terenie oczyszczalni ścieków. Stwierdzono iż najwyższe liczebności bakterii występowały w rejonie piaskowników i komór recyrkulacji osadu czynnego. Natomiast liczba bakterii w rejonie komór napowietrzania była zbliżona do tła.
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ARCHED VIADUCT OVER PKP TRACKTS IN TCZEW
PublicationPraca stanowi streszczenie artykułu dotyczącego nietypowego wiaduktu łukowego z jednym dźwigarem głównym. Omówiono konstrukcję, technologię wznoszenia modele obliczeniowe,analizy teoretyczne oraz metodykę i wyniki przeprowadzonych badań in situ obiektu.
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AUTOMATED NEGOTIATIONS OVER COLLABORATION PROTOCOL AGREEMENTS
PublicationThe dissertation focuses on the augmentation of proactive document - agents with built-in intelligence to recognize execution context provided by devices visited during a business process, and to reach collaboration agreement despite conflicting requirements. The proposed solution, based on intelligent bargaining using neural networks to improve simple multi-issue negotiation between the document and thedevice, requires practically...
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GC-FID determination of C2-C4 aliphatic monocarboxylic acids in aqueous samples preceded by solvent extraction
PublicationEkstrakcja za pomocą eteru metylo-tert-butylowego (MTBE) została wykorzystana do izolacji krótkołańcuchowych alkanowych kwasów monokarboksylowych (2-4 atomy węgla w cząsteczce) z próbek o matrycy wodnej. Całkowita wydajność dwukrotnej ekstrakcji z próbek wodnych kwasów: octowego, propionowego i masłowego wynosiła odpowiednio ok. 55% , ok. 90% i ponad 90%. Wydajności ekstrakcji są porównywalne z wartościami uzyskiwanymi w przypadku...
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Black Devils in Normandy—Identification of an Unknown Soldier Found in the Polish War Cemetery of Urville-Langannerie (France)
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Sulfuric acid modified clinoptilolite as a solid green catalyst for solvent-free α-pinene isomerization process
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The application of single drop extraction technique for chromatographic determination of solvent residues in edible oils and pharmaceutical products
PublicationW pracy przedstawiono zalety i wady techniki ekstrakcji do pojedynczej kropli, będącą prostą i tanią alternatywą dla mikroekstrakcji do fazy stacjonarnej. Ponadto opisano dwie analityczne procedury do chromatograficznego oznaczania wybranych rozpuszczalników organicznych (heksanu, benzenu, toluenu oraz trichlorometanu, 1,1,1-trichloroetanu, tetrachlorometanu, trichloroetylenu, tetrachloroetenu)w olejach jadalnych i próbkach farmaceutycznych....
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Validation of SPME-GC and HS-GC procedures for the determination of selected solvent residues in edible oil matrices
PublicationW pracy przedstawiono przebieg procesu walidacji, przeprowadzonej zgodnie ze wskazaniami ICH (International Conference on Harmonization), procedur wykorzystywanych do oznaczania pozostałości wybranych rozpuszczalników w olejach jadalnych i preparatach farmaceutycznych. W celu izolacji i wzbogacania analitów wykorzystano dwie bezrozpuszczalnikowe techniki ekstrakcyjne: ekstrakcję do fazy nadpowierzchniowej (HS) i mikroekstrakcję...
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The last meal: large insects predominate the diet of the European Roller Coracias garrulus prior to population extinction
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Multivariable optimization of ultrasound-assisted solvent extraction of bee pollen prior to its element analysis by FAAS
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Antioxidant potential of various solvent extract from Morus alba fruits and its major polyphenols composition
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A concerted evolution of supramolecular interactions in a {cation; metal complex; π-acid; solvent} anion-π system
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Base-Catalyzed, Solvent-Free Synthesis of Rigid V-Shaped Epoxydibenzo[b,f][1,5]diazocines
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Finding the Right Solvent: A Novel Screening Protocol for Identifying Environmentally Friendly and Cost-Effective Options for Benzenesulfonamide
PublicationThis study investigated the solubility of benzenesulfonamide (BSA) as a model compound using experimental and computational methods. New experimental solubility data were collected in the solvents DMSO, DMF, 4FM, and their binary mixtures with water. The predictive model was constructed based on the best-performing regression models trained on available experimental data, and their hyperparameters were optimized using a newly...
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Vibrational spectroscopic studies of N,N'-dimethylpropyleneurea-water system: Affected solvent spectra and factor analysis
PublicationZmierzono widma FT-IR układu N,N'-dimetylopropylenomocznik (DMPU) - woda w całym zakresie składów w zakresie 4000-500 cm-1 przy użyciu techniki całkowitego wewnętrznego odbicia (ATR). Hydratacja DMPU została dodatkowo zbadana przy pomocy transmisyjnej spektroskopii FT-IR izotopowo rozcieńczonej HDO w H2O. Widma zanalizowano przy użyciu ilościowej wersji metody widm różnicowych, prowadzącej do wyizolowania widma rozpuszczalnika...
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Solventless and solvent-minimized sample preparation techniques for determining currently used pesticides in water samples: A review
PublicationThe intensification of agriculture means that increasing amounts of toxic organic and inorganic compounds are entering the environment. The pesticides generally applied nowadays are regarded as some of the most dangerous contaminants of the environment. Their presence in the environment, especially in water, is hazardous because they cause human beings to become more susceptible to disease. For these reasons, it is essential to...
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Large-scale DFT calculations in implicit solvent-A case study on the T4 lysozyme L99A/M102Q protein
PublicationW ostatnich latach zaproponowano szereg modeli typu implicit solvent, ktore bazują na bezpośrednim rozwiązaniu niejednorodnego równania Poissona w przestrzeni rzeczywistej. Modele te charakteryzują się elegancją, ponieważ wnęka, w której umieszczona jest molekuła substancji rozpuszczanej zdefiniowana jest bezpośrednio w funkcji gęstości elektronowej, a rozkład ładunku jest w sposób samouzgodniony polaryzowany dzięki reakcji dielektryka,...
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Techno‐economic evaluation of a natural deep eutectic solvent‐based biorefinery: Exploring different design scenarios
PublicationThis paper presents a comprehensive techno‐economic evaluation of an integrated natural deep eutectic solvent (NADES)‐based biorefinery – a 1 ton day−1 capacity design plant. The key parameters include payback period, net present value (NPV), and internal rate of return (IRR). These were compared with the parameters of conventional biorefineries. The ‘n th plant’ results clearly revealed that the single product‐based biorefinery...
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Emissions and toxic units of solvent, monomer and additive residues released to gaseous phase from latex balloons
PublicationThis study describes the VOCs emissions from commercially available latex balloons. Nine compounds are determined to be emitted from 13 types of balloons of different colors and imprints in 30 and 60°C. The average values of total volatile organic compounds (TVOCs) emitted from studied samples ranged from 0.054 up to 7.18 μg∙g-1 and from 0.27 up to 36.13 μg∙g-1 for 30oC and 60oC, respectively. The dataset is treated with principal...
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A natural deep eutectic solvent - protonated L-proline-xylitol - based stationary phase for gas chromatography
PublicationThe paper presents a new kind of stationary phase for gas chromatography based on deep eutectic solvents (DES) in the form of a mixture of L-proline (protonated with hydrochloric acid) as a hydrogen bond acceptor (HBA) and xylitol as a hydrogen bond donor (HBD) in a molar ratio of HBA:HBD 5:1. DES immobilized on a silanized chromatographic support was tested by gas chromatography (GC) in order to determine its resolving power for...
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Application of multicriteria decision analysis in solvent type optimization for chlorophenols determination with a dispersive liquid–liquid microextraction
PublicationThis study presents a novel support tool for the optimization and development of analytical methods. The tool is based on multi-criteria decision analysis (MCDA), namely the Technique for Order of Preference by Similarity to the Ideal Solution (TOPSIS), that allows users to rank possible solutions according to their requirements. In this study, we performed rankings of pairs of eight extraction and three dispersive solvents used...
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Towards azeotropic MeOH-MTBE separation using pervaporation chitosan-based deep eutectic solvent membranes
PublicationDeep eutectic solvents (DESs) are a new class of solvents that can offset some of the major drawbacks of common solvents and ionic liquids. When dealing with the preparation of dense membranes, the use of DESs is still challenging due to their low compatibility with the polymer phase. In this research, a novel L-proline:sulfolane (molar ratio 1:2) DES was synthesized and used for the preparation of more sustainable bio-based membranes...
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Volatile Organohalogen Compounds Determination with Dispersive Liquid-Liquid Microextraction Applying Solvent Lighter than Water
PublicationBackground: Volatile organohalogen compounds (VOX) are a group of environmental pollutants that risk the quality of drinking water. These compounds are characterized by certain acute and chronic toxicities, possessing mutagenic properties. Because of these potential risks factors that these compounds cause, the maximum allowable concentrations (MACs) have been established by respective organizations. The abundance of VOX, their...
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Okiennnice i rolety zewnętrzne a energooszczędność budynku = Windows shutters and roller blinds and energy savung in building
PublicationKonieczność oszczędzania energii w budownictwie, która wynika między innymi z ostatnich zmian legislacyjnych, zmusza projektantów do poszukiwania nowych rozwiązań w tym zakresie. Jednym ze sposobów zmniejszania zapotrzebowania na energię potrzebną do funkcjonowania danego budynku jest zastosowanie odpowiednio zaprojektowanych i wykonanych okiennic, rolet lub żaluzji zewnętrznych w oknach. Konieczność stosowania okiennic, rolet...
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Merging Proline:Xylitol Eutectic Solvent in Crosslinked Chitosan Pervaporation Membranes for Enhanced Water Permeation in Dehydrating Ethanol
PublicationThe scope of this research aims at merging a new deep eutectic mixture (DES) into a biopolymer-based membrane for a pervaporation application in dehydrating ethanol. Herein, an L-proline:xylitol (at 5:1) eutectic mixture was successfully synthesized and blended with chitosan (CS). A complete characterization of the hybrid membranes, in terms of morphology, solvent uptake, and hydrophilicity, has been conducted. As part of their...
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Production of antimicrobial silver nanoparticles modified by alkanethiol self‐assembled monolayers by direct current atmospheric pressure glow discharge generated in contact with a flowing liquid anode
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Direct current atmospheric pressure glow discharge generated between a pin-type solid cathode and a flowing liquid anode as a new tool for silver nanoparticles production
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Analytical techniques for trace organic compounds - IV: Tandem mass spectrometry for organic trace analysis (Technical Report)
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Analytical techniques for trace organic compounds-III: Mass spectrometry in trace organic analysis
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Testing of PTA automatic braze-welding technology for producing absorber joints of solar collectors
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Selection and Setting of an Intelligent Fuzzy Regulator based on Nonlinear Model Simulations of a Helicopter in Hover
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Technology of braze welding absorber tubes to copper foil in solar collectors by the GTA method
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Re-use of photovotaic [i.e. photovoltaic] crystalline silicon solar cells - technological possibilities
PublicationSystemy fotowoltaiczne są stosowane na całym świecie jako niezawodne i wydajne układy zasilania dla zastosowań przemysłowych, komunalnych i komercyjnych. Średni czas eksploatacji modułów fotowoltaicznych wynosi ponad 25 lat. Wyeksploatowane moduły oraz te, które uległy uszkodzeniu, są obecnie przeważnie składowane na wysypiskach jako odpady przemysłowe lub komunalne, np. jako szkło lub materiał rozbiórkowy, co było dopuszczalne...
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Linking the diversity of native flora to land cover heterogeneity and plant invasions in a river valley
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Biological and Agrotechnical Aspects of Weed Control in the Cultivation of Early Potato Cultivars under Cover
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Reasons for shortening snow cover duration in the Western Sudetes in light of global climate change
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Air temperature trends at Mount Śnieżka (Polish Sudetes) and solar activity, 1881–2012
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Occurrence of Depressive Symptoms Among Older Adults after a Stroke in the Nursing Home Facility
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1/f noise as a diagnostic tool for non-destructive testing of silicon solar cells
PublicationPrzeprowadzono badania eksperymentalne charakterystyk statycznych i szumowych krzemowych ogniw słonecznych. Wyniki wykazują możliwość wykorzystania szumu 1/f jako narzędzia diagnostycznego w testach nieniszczacych tych przyrzadów.
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Iron-based catalysts under solar and visible radiation for contaminants of emerging concern removal
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Land cover transitions and changing climate conditions in the Polish Carpathians: Assessment and management implications
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Significant Parameters Identification for Optimal Modelling of the Harp-Type Flat-Plate Solar Collector
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Investigations of New Phenothiazine-Based Compounds for Dye-Sensitized Solar Cells with Theoretical Insight
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Effect of thienyl units in cyanoacrylic acid derivatives toward dye-sensitized solar cells
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Nongeminate recombination in organic bulk heterojunction solar cells: Contribution of exciton–polaron interaction
PublicationA new model to explain nongeminate recombination in organic bulk heterojunction solar cells is presented. We suggest that the annihilation of excitons on charge carriers at the interface between donor and acceptor phases competes with the bimolecular recombination of Coulombically bound electron–hole pairs. The exciton–polaron interaction gives visible contribution to the reduction of Langevin recombination. An analytical formula,...
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Synthesis of novel dinuclear ruthenium polypyridine dye for dye-sensitized solar cells application
PublicationA new dinuclear ruthenium(II) polypyridine complex has been successfully synthesized. The new compound has been characterized by spectroscopic and electrochemical methods. Its potential application as a sensitizing dye in dye-sensitized solar cells has been checked under AM 1.5 G irradiation conditions (100 mW cm−2) and its performance was compared to that of a commercially available mononuclear analogous dye. The overall light-to-electricity...
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Modeling the electrical characteristics of P3HT:PCBM bulk heterojunction solar cells: Influence of the interface recombination
PublicationThe interface recombination of charge carriers located in the material with lower permittivity (Szmytkowski 2009 Chem.Phys.Lett. 470 123) has been implemented for the first time to calculate the electrical characteristics of the donor-acceptor P3HT:PCBM bulk heterojunction solar cell. In order to estimate the photocurrent density in this system, a simple analytical formula has been derived. We have obtained a very good agreement...
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The influence of UV light on Performance of poly(methyl methacrylate) in regard to dyesensitised solar cells
PublicationNiskie kosztu produkcji i prosta budowa Barwnikowych Ogniw Słonecznych (ang.DSSC-Dye Sensitized Solar Cells) a także porównywalne wydajności czynią je konkurencyjnymi wsród komercyjnych technologii ogniw słonecznych. Jednym z elementów wchodzących w skład BOS jest transparentne szkło przewodzące stanowiące jego elektrody. Doskonała transparentność omozliwia zastosowanie polimeru PMMA jako substytutu transparaentnego szkła przewodzącego....
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Design of power cable lines partially exposed to direct solar radiation – special aspects
PublicationPower cable lines are usually buried in the ground. However, in some cases, their ending sections are mounted along the supports of overhead lines. This leads to a situation where the cables are exposed to direct solar radiation and, consequentially, overheat. The paper presents the advanced computer modelling of power cables’ heating, considering their insolation as well as the effect of wind. The temperature and current-carrying...
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Issues relating to the efficient Application of passive solar protection in multi-family residential buildings
PublicationThe following article is intended to discuss the issues concerning the introduction of passive measures aimed at improving solar protection in multi-family buildings. A system of classifying these methods into two groups of solutions (architectural and material-building) was applied. The first group includes issues concerning facade design, the spatial features of which (such as loggias, balconies and other overhangs) can be treated...