Filters
total: 3590
displaying 1000 best results Help
Search results for: DIRECT DIGITAL SYNTHESIS
-
Synthesis of Trehalose by the Erythritol-Producing Yeast Yarrowia lipolytica Co-Displaying Maltooligosyltrehalose Synthase and Maltooligosyltrehalose Trehalohydrolase
PublicationIndustrial trehalose production faces economic challenges with costly enzyme preparations, prompting the exploration of eco-friendly alternatives. Here, we established a coupled functional sugar production line leveraging erythritolproducing cells as an innovative enzyme preparation for trehalose synthesis. The erythritol-producing Yarrowia lipolytica was modified to express a fusion protein consisting of maltooligosyltrehalose synthase...
-
Synthesis and structural characterization of bio-based bis(cyclic carbonate)s for the preparation of non-isocyanate polyurethanes
PublicationBio-based cyclic carbonates are of significant research interest as monomers for non-isocyanate polyurethane (NIPU) synthesis. This research describes the synthesis of a series of five-membered bis(cyclic carbonate)s using bio-based polyether polyols (PO3G) with different molecular weights (250, 650 and 1000 g mol−1) and carbon dioxide as green feedstocks. The utilization of CO2 as a source of carbon in the chemical reaction is...
-
Digital image correlation method: a versatile tool for engineering and art structures investigations
Publication -
DGO '24: Proceedings of the 25th Annual International Conference on Digital Government Research
Publication -
THE IMPACT OF EMOTIONS ON CHANGES IN THE CORRELATION COEFFICIENT BETWEEN DIGITAL IMAGES OF THE HUMAN FACE
Publication -
DGO '23: Proceedings of the 24th Annual International Conference on Digital Government Research
Publication -
Medical Digital Library Services as an Improvement of the Teleconsultation System in the Regional Health Network
Publication -
ROHub — A Digital Library of Research Objects Supporting Scientists Towards Reproducible Science
Publication -
The Effects of Background Color, Shape and Dimensionality on Purchase Intentions in a Digital Product Presentation
Publication -
Eye Tracking Based Experimental Study on Basic Digital Control Panel Usability
Publication -
Conditions for measurement, analog-to-digital conversion and frequency analysis of irregularities of profile surface
PublicationPrzedstawiono uwarunkowania pomiaru, przetwarzania analogowo-cyfrowego i analizy częstotliwościowej nierówności powierzchni toczonych dla celów rozpoznawania ich głównych składowych. Przedstawiono ograniczenia w pomiarze igłą, która odwzorowuje nierówności poprzeczne. Podano zależności parametrów pomiaru cyfrowego nierówności warunkujące zakresy ich rozpatrywania. Dla wartości przedziału próbkowania, dla którego nie jest spełnione...
-
Development of a digital method for neutron/gamma-ray discrimination based on matched filtering
Publication -
TESLA cavity modeling and digital implementation in FPGA technology for control system development
Publication -
Reasons Fostering or Discouraging the Implementation of Central Bank-Backed Digital Currency: A Review
Publication -
Digital Cartographic Generalization – Study of Its Thresholds and Stages in Example of Cartographic Line
Publication -
Platform governance for sustainable development: Reshaping citizen-administration relationships in the digital age
PublicationChanging governance paradigms has been shaping and reshaping the landscape of citizen-administration relationships, from impartial application of rules and regulations by administration to exercise its authority over citizens (bureaucratic paradigm), through provision of public services by administration to fulfil the needs of citizens (consumerist paradigm), to responsibility-sharing between administration and citizens for policy...
-
Digital filtering of railway track coordinates in mobile multi-receiver GNSS measurements
Publication -
Can architecture be 11-dimensional? The nature of space in the architecture of the digital world era
PublicationThis research aims to explore the development of architectural theories about ‘architectural dimensions’ and look at architecture as a multidimensional space. It is important to understand that with today's development of virtual reality technology and through the combination of theories of physics and architecture, a new possibility of creating space has emerged. The arguments are made through inductive reasoning and grounded...
-
Accelerated impedance spectrum measurement via multisine perturbationand digital filter banks
PublicationPrzedstawiono przyspieszoną metodę pomiaru widma impedancyjnego, zorientowaną na pomiary jakości powłok przeciwkorozyjnych, modelowanych liniowymi obwodami zastępczymi. Metoda polega na pobudzeniu układu wielosinusoidalnym sygnałem popudzającym oraz analizie pobudzenia i odpowiedzi obiektu przez bank filtrów cyfrowych. Przedstawiono podstawy teoretyczne metody oraz propozycję metodologii pomiaru. Przeanalizowano wyniki symulacji...
-
Green thermoplastic poly(ether-urethane)s – synthesis, chemical structure and selected properties investigation
PublicationThis work aimed to characterize the effect of the monomers chemical structure on the selected properties of the green thermoplastic poly(ether-urethane)s. During synthesis two types of polyether biopolyols, 4,4′-diphenylmethane diisocyanate and bio-based 1,3-propanediol were employed. Materials were synthesized with the use of two step method and two different prepolymers, which were mixed together in equimolar quantities. Obtained...
-
General, Mild, and Metal-Free Functionalization of Indole and Its Derivatives Through Direct C3-Selenylation
PublicationA very mild method for the introduction of functionalized alkylselenyl group at C-3 position of the indole ring was developed. The proposed procedure consists of an electrophilic substitution of indole and its derivatives with bis(O,O-diisopropoxyphosphorothioyl) diselenide and subsequent cleavage of the P–Se bond with tetrabutylammonium fluoride in the presence of various electrophilic reagents. This method can be successfully...
-
Synthesis and characterisation of polyurethane elastomers with semi-products obtained from polyurethane recycling
PublicationIn this work polyurethane elastomers were synthesised by using different mixtures of a petrochemical and glycerolysate polyols and 4,4-diphenylmethane diisocyanate (MDI). Glycerolysate polyol was produced from polyurethane foam decomposition using crude glycerine as a decomposition agent. The structure and thermal properties of obtained semi-product were similar to the polyol used in the synthesis of original foam. Glycerolysate...
-
Scaling Up the Process of Titanium Dioxide Nanotube Synthesis and Its Effect on Photoelectrochemical Properties
PublicationIn this work, for the first time, the influence of scaling up the process of titanium dioxide nanotube (TiO2NT) synthesis on the photoelectrochemical properties of TiO2 nanotubes is presented. Titanium dioxide nanotubes were obtained on substrates of various sizes: 2 × 2, 4 × 4, 5 × 5, 6 × 6, and 8 × 8 cm2. The electrode material was characterized using scanning electron microscopy as well as Raman and UV–vis spectroscopy in order...
-
Synthesis and characterization of biopolyols through biomass liquefaction of wood shavings and their application in the preparation of polyurethane wood composites
PublicationThe sustainability of production systems in wood processing, wood industry, and wooden waste disposal is an important issue for European industry and society. Proper development of products based on renewable wood resources gives an opportunity to provide materials with long-term environmental, social, and economic sustainability. This study aims to establish a new way of forestry and agricultural waste materials utilization by...
-
Bis(azobenzocrown ether)s-synthesis
PublicationSyntezowano nowe związki bisazobenzokoronowe różniące się wielkością makropierścienia i długością łańcucha łączącego oba pierścienie makrocykliczne. Związki te wykorzystano jako jonofory w membranach klasycznych i miniaturowych elektrod jonoselektywnych. Przeprowadzono również badania dotyczące kompleksowania soli litowców i berylowców w roztworze acetonitrylowym z wykorzystaniem spektrofotometrii UV-VIS oraz zbadano strukturę...
-
Synthesis of acylpropyleneglycol emulsifiers in microemulsion system
PublicationBadano wpływ obecności surfaktantów anionowych i niejonowych na postęp reakcji estryfikacji glikolu propylenowego kwasem dodekanowym. Wyznaczono niektóre stałe kinetyczne procesu (rząd reakcji i stała szybkości reakcji).
-
Thiolate complexes of molybdenum. synthesis and application
PublicationZwiązki molibdenu, w tym siarczki, posiadają własności katalityczne i są szeroko wykorzystywane m.in. w przemyśle petrochemicznym. Enzym nitrogenaza posiadający w centrum aktywnym molibdenu umożliwia reakcję redukcji azotu atmosferycznego w niskiej temperaturze i pod ciśnieniem atmosferycznym. Ta sama reakcja w przemyśle wymaga zastosowania znacznie bardziej drastycznych warunków. Stąd wieloletnie zainteresowanie badaczy możliwością...
-
Synthesis and properties of CaFe2As2 single crystals
PublicationOpisana została synteza i podstawowe właściwości fizyczne monokryształów CaFe2As2. CaFe2As2 krystalizuje w strukturze ThCr2Si2, stałe sieciowe wynoszą odpowiednio: a = 3.887(4) A and c = 11.758(23) A.
-
Synthesis of the zeolites on the lightweight aluminosilicate fillers
Publication -
Melatonin in the skin: synthesis, metabolism and functions
Publication -
Serendipitous synthesis of trimetallic porphyrazine triads
Publication -
A General Synthesis of Diaryl Cyclic Diamidines
PublicationA convenient and general method has been developed for directly converting bis-nitriles, e.g., I, to cyclic diamidines, e.g., II, using reagents derived from diaminoalkanes, e.g., H2NCH2CH2NH2, satd. with hydrogen sulfide. A 1:1 mixt. of a diaminoalkane and Et alc. (or without) was effective in most cases (72-88%). The synthetic utility of this methodol. in the prepn. of tetrakis(cyclic amidino)pyrenes III (R = H, Me) from 1,3,6,8-tetracyanopyrene...
-
Hydrothermal and mechanochemical synthesis of crystalline CaCO3
Publication -
Widely parameterizable high-level synthesis
Publication -
Algorithmic synthesis using Python compiler
Publication -
Azo and azoxythiacrown ethers: synthesis and properties
PublicationA series of 16- and 18-membered azo- and azoxythiacrown ethers have been synthesized by reductive macrocyclization of the respective bis(nitrophenoxy)oxaalkanes. The aromatic residues located in the polyether region of the molecule were introduced to macrocyclic skeletons and their affinities toward different groups of metal cations in ion-selective electrodes were described. X-ray structures for one dinitropodand and one azoxybenzothiacrown...
-
Novel Azocoumarin Derivatives—Synthesis and Characterization
Publication -
Macromolecular Templates for Synthesis of Inorganic Nanoparticles
Publication -
Future Directions in Quantum Materials Synthesis
PublicationThe following sections are included: Introduction The Current State of the Art The Frontiers Exploring the Frontiers Conclusion
-
Muramyl peptides - synthesis and biological activity
PublicationArtykuł przeglądowy opisujący syntezę i aktywność biologiczną muramylopeptydów.
-
Fast synthesis of coupled-resonator filters.
PublicationZaproponowana została nowa, szybko zbieżna technika syntezy macierzy sprzężneń filtrów wykorzystujących rezonatory sprzężone. Metoda jest sformułowana jako nieliniowy problem najmniejszych kwadratów, optarty o zera i bieguny zwarciowej impedancji wejsciowej i wyjściowej oraz wartości własnych macierzy sprzężeń i jej podmacierzy.
-
Synthesis and reactivity of O-acyl selenophosphates.
PublicationMieszane bezwodniki kwasów monoselenofosforowych >P(Se)O-C(O)- w zależności od podstawników na atomie fosforu oraz karbonylowym atomie węgla izomeryzują do układów Se-mostkowych >P(O)Se-(O)C- oraz ulegają dekarboksylacji (dekarbonylacji i dekarboksylacji) do estrów Se-alkilowych >P(O)Se-. W eksperymantach krzyżowych następuje wzajemna wymiana grup acylowych pomiędzy cząsteczkami bezwodników.
-
Synthesis and reactivity of O-acyl selenophosphates
PublicationPrzeprowadzono syntezę nowych selenofosforanów acylu. Badano stabilność i reaktywność tych bezwodników w odniesieniu do ich struktury.
-
Anthracenedione analogues - synthesis and biological activity
PublicationW artykule opisano syntezę i aktywność biologiczną analogów antracenedionowych.
-
Convenient Synthesis of Functionalized Unsymmetrical Vinyl Disulfides and Their Inverse Electron-Demand Hetero-Diels-Alder Reaction
PublicationThe simple, convenient, and efficient methods for the preparation of unsymmetrical vinyl disulfides with additional functional groups under mild conditions with moderate to high yields were designed. The developed methods include the reaction of S-vinyl phosphorodithioate with thiotosylates or S-vinyl thiotosylate with thiols. The designed methods allow for the synthesis of unsymmetrical vinyl disulfides with additional functionalities...
-
Synthesis Attempt and Structural Studies of Novel A2CeWO6 Double Perovskites (A2+ = Ba, Ca) in and outside of Ambient Conditions
PublicationSynthesis Attempt and Structural Studies of Novel A 2 CeWO 6 Double Perovskites (A 2+ = Ba, Ca) in and outside of Ambient Conditions Damian Wlodarczyk,* Mikolaj Amilusik, Katarzyna M. Kosyl, Maciej Chrunik, Krystyna Lawniczak-Jablonska, Michal Strankowski, Marcin Zajac, Volodymyr Tsiumra, Aneta Grochot, Anna Reszka, Andrzej Suchocki, Tomasz Giela, Przemyslaw Iwanowski, Michal Bockowski, and Hanka Przybylinska Cite This: ACS Omega...
-
Studies on Aminoanthraquinone-Modified Glassy Carbon Electrode: Synthesis and Electrochemical Performance toward Oxygen Reduction
PublicationIn this paper, 9,10-anthraquinone (AQ) derivative-modified glassy carbon (GC) electrodes were studied towards the electrochemical reduction of oxygen in aqueous and non-aqueous solutions. The reaction of 1-chloro-9,10-anthraquinone with aliphatic diamines was applied for the synthesis of amino-9,10-anthraquinone derivatives. The obtained AQ derivatives were grafted onto the surface of glassy carbon electrodes by electropolymerisation...
-
Studies on Aminoanthraquinone-Modified Glassy Carbon Electrode: Synthesis and Electrochemical Performance toward Oxygen Reduction
PublicationIn this paper, 9,10-anthraquinone (AQ) derivative-modified glassy carbon (GC) electrodes werestudied towards the electrochemical reduction of oxygen in aqueous and non-aqueous solutions. The reaction of 1-chloro-9,10-anthraquinone with aliphatic diamines was applied for the synthesis of amino-9,10-anthraquinone derivatives. The obtained AQ derivatives were grafted onto the surface of glassy carbon electrodes by electropolymerisation...
-
Sulfonamides with hydroxyphenyl moiety: Synthesis, structure, physicochemical properties, and ability to form complexes with Rh(III) ion
PublicationSulfonamides are the first successfully synthesized antimicrobial drugs. The mechanism of sulfonamides’ antimicrobial action involves competitive inhibition of folic acid synthesis and prevention of the growth and reproduction of bacteria. Even though they have been applied in therapy for more than 75 years, sulfonamides are still the drugs of choice for the treatment of various diseases. The aim of this work was to synthesize...
-
International Journal of Digital Crime and Forensics
Journals