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Search results for: analogi tuftsyny
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Natural convective heat transfer from isothermal cuboids
PublicationThe paper presents results of theoretical and experimental investigations of the convective heat transfer from isothermal cuboid. The analytical solution was performed taking into account complete boundary layer length and the manner of its propagation around isothermal cuboid. It arises at horizontal bottom surface and grows on vertical lateral surface of the block. After changing its direction, the boundary layer occurs above...
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The crystal and solution studies of glucosamine-6-phosphate synthase from Candida albicans
PublicationOkreślono strukturę krystaliczną domeny izomerazowej syntazy glukozamino-6-fosforanu z Candida albicans w stanie natywnym, oraz w kompleksie z inhibitorem allosterycznym UDP-GlcNAc, fruktozo-6-P, glukozo-6-P oraz analogiem stanu przejściowego reakcji enzymatycznej - 2-amino-2-deoksy-D-mannitolo-6-P (ADMP). Na podstawie wyników badań metodą niskokątowego rozpraszania promieni X (SAXS) wydedukowano przypuszczalną strukturę kompletnej...
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Application of electronic nose based on fast GC for comparison of aroma profiles of homemade cherry "Nalewka" made with addition of different amount of sugar
PublicationNalewka is a traditional Polish homemade spirit beverage and there are many different recepies for the production of nalewkas. However, it is not knownwhat amount of sugar can have influence of their aroma profiles. There is little information on the comparison of aroma profiles of Polish cherry nalewkas made with addition of different amount of sugar. For this purpose electronic nose based on fast GC has been used. Electronic...
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Differentiation Between Spirits According to Their Botanical Origin
PublicationAgricultural distillates are used for the production of spirit beverages. As more and more products with a specific botanical composition specified on the label are produced (e.g. rye vodkas, wheat vodkas and Polish Vodka, which cannot be produced with the addition of maize distillate), it is necessary to look for quicker and more accurate methods allowing the determination of botanical origin of alcoholic beverages and materials...
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The development of an underwater telephone for digital communication purposes
PublicationThe underwater telephone HTL-10 has been designed to provide voice and data communication between helicopter and submarines using acoustic waves. It works in a half-duplex mode and uses analogue power-efficient modulation in the form of a single side-band, suppressed carrier, in a wide range of frequencies. It generates the transmitted signal, and processes the received signals. It is implemented with the use of digital signal...
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Application of electronic nose based on fast GC for comparison of aroma profiles of homemade cherry "Nalewka" made with addition of different amount of sugar
PublicationNalewka is a traditional Polish homemade spirit beverage and there are many different recepies for the production of nalewkas. However, it is not knownwhat amount of sugar can have influence of their aroma profiles. There is little information on the comparison of aroma profiles of Polish cherry nalewkas made with addition of different amount of sugar. For this purpose electronic nose based on fast GC has been used. Electronic...
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Cannabinoids: Challenges, opportunities and current techniques towards its extraction and purification for edibles
PublicationDue to the multiple health benefits associated with the consumption of cannabinoids, there is a current trend on continuing to explore their biological properties. Cannabidiol (CBD) is likely to be the most investigated endocannabinoid from the cannabis plant. Unfortunately, the purification of CBD from its natural source and psychotropic analogue (tetrahydrocannabinol, THC) is timely challenging for the research community based...
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Innovative method of localization airplanes in VCS (VCS-MLAT) distributed system
PublicationThe article presents the concept and the structure of the localization module. The prototype module is the part of the VCS (VCS-MLAT) localization distributed system. The device receives the audio signal transmitted in airplanes band (118 MHz – 136 MHz). Received data with the timestamps are send to the main server. The data from multiple devices estimates the localization of the airplane. The main aim of the project is the analysis...
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THE 3D MODEL OF WATER SUPPLY NETWORK WITH APPLICATION OF THE ELEVATION DATA
Publication3D visualization is a key element of research and analysis and as the source used by experts in various fields e.g.: experts from water and sewage systems. The aim of this study was to visualize in three-dimensional space model of water supply network with relief. The path of technological development of GESUT data (Geodezyjna Ewidencja Sieci Uzbrojenia Terenu – geodetic records of public utilities) for water supply and measurement...
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Kinetics of molecular decomposition under irradiation of gold nanoparticles with nanosecond laser pulses—A 5-Bromouracil case study
PublicationABSTRACT Laser illuminated gold nanoparticles (AuNPs) efficiently absorb light and heat up the surrounding medium, leading to versatile applications ranging from plasmonic catalysis to cancer photothermal therapy. Therefore, an in-depth understanding of the thermal, optical, and electron induced reaction pathways is required. Here, the electrophilic DNA nucleobase analog 5-Bromouracil (BrU) has been used as a model compound to...
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Synthesis of 3-(2-Alkylthio-4-chloro-5-methylbenzenesulfonyl)-2-(1-phenyl-3-arylprop-2-enylideneamino)guanidine Derivatives with Pro-Apoptotic Activity against Cancer Cells
PublicationThe untypical course of reaction between chalcones and benzenesulfonylaminoguanidines led to the new 3-(2-alkylthio-4-chloro-5-methylbenzenesulfonyl)-2-(1-phenyl-3-arylprop-2- enylideneamino)guanidine derivatives 8–33. The new compounds were tested in vitro for their impact on the growth of breast cancer cells MCF-7, cervical cancer cells HeLa and colon cancer cells HCT-116 by MTT assay. The results revealed that the activity of...
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THE INFLUENCE OF HOUSING ARRANGEMENT AND INTERFERENCE ON PRELOAD AND THEORETICAL LIFETIME OF A SYSTEM OF TAPER ROLLER BEARINGS OF A HIGH SPEED SHAFT OF A WIND TURBINE GEARBOX
PublicationA system of two taper roller bearings can carry loads with a high ratio of axial load to radial load. Such a system was proposed for a wind turbine gearbox following the poor durability of original bearing design with the aim of increasing durability. Because of size limits, a proposed system is composed of two different taper roller bearings. Standard manufacturers’ catalogues do not provide information on recommended preload...
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Renewable Resources for Polyurethanes and Polyurethane Composites: A Review
PublicationEach year, more than two million tons of polyurethane is produced in the EU by reacting isocyanates with polyols made from fossil fuel. In addition, there are appreciable quantities of petroleum based functional additives applied in the industry nowadays for both polyols and polyurethane materials. It is therefore of key importance to develop sustainable economically viable polyols with enhanced functionalities, and thereby reducing...
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Synthesis of phosphono and phosphate derivatives of hydroxyimino-D-alditols as new potential antifungal agents
PublicationIn search for new effective we antyfungals we focus on two enzymes involved in biosynthesis of the fungal cell wall. The first enzyme is glucosamine-6-phosphate (GlmS), which catalyzes transformation of D-fructose-6-phosphate (Fru-6P) to D-glucosamine-6-phodphate (GlcN-6P) in the chitin biosynthesis pathway. The second enzyme is phosphomannose isomerase (PMI) repored to play a crucial role in biosynthesis of many mannosylated structures,...
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Migration of container terminals as their natural process of evolution: Case study of Gdańsk and Gdynia ports
PublicationThe paper proposes a theoretical model of container terminals and container port development, based on the life cycle theory, threshold theory and catastrophe theory, and in references to Kuznets' swings (interpreted as waves of infrastructural investments), and Kondratiev long economic waves. The aim of this model is to explain the development process of a container terminal and a port within one technological generation, as...
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Distributed Representations Based on Geometric Algebra: the Continuous Model
PublicationAuthors revise the concept of a distributed representation of data as well as two previously developed models: Holographic Reduced Representation (HRR) and Binary Spatter Codes (BSC). A Geometric Analogue (GAc - ''c'' stands for continuous as opposed to its discrete version) of HRR is introduced - it employs role-filler binding based on geometric products. Atomic objects are real-valued vectors in n-dimensional Euclidean space...
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Theoretical studies of fragmentation processes of neutral and ionized furan molecule
PublicationThis PhD thesis focuses on the fragmentation mechanism of the furan molecule in the gas phase. The approach taken in this work comprised of three theoretical methodologies considering the dynamical, energetical and entropic aspects of the studied process. First, molecular dynamics simulations were performed. Next, the potential energy surfaces were explored at the DFT/B3LYP level of theory. Finally, a new statistical Microcanonical...
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A Green Chemistry "environmentally friendly" approach to the synthesis of chloro-intermediates of ephedrine/pseudoephedrine
PublicationMethylamphetamine is an addictive stimulant drug that strongly activates certain systems in the brain. It is closely related chemically to amphetamine, but the central nervous system effects of methamphetamine are greater. There is much interest in methylamphetamine among scientists and therefore the synthesizes of methylamphetamine and its metabolites are carried out on a large scale in chemical laboratories. Globally, ephedrine...
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Lipopeptides - synthesis and their properties
PublicationZaprezentowano syntezę nowych pochodnych tripeptydu Gly-Hyp-Lys o potencjalnie lepszych właściwościach lipofilowych. Modyfikacje polegały na acylowaniu N-końca glicyny kwasami tłuszczowymi (np. palmitynowym i stearynowym). Syntezę lipopeptydów zawierających fragment Gly-X-Y (gdzie: X= Met,Hyp,Hyp-Met,Gly-Hyp; Y=Lys,D-Lys) przeprowadzono na fazie stałej z zastosowaniem procedury Fmoc. Do wydłużanie łańcucha peptydowego zastosowano...
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Edge-Guided Mode Performance and Applications in Nonreciprocal Millimeter-Wave Gyroelectric Components
PublicationThe analogies between the behavior of gyromagnetic and gyroelectric nonreciprocal structures, the use of the simple transfer matrix approach, and the edge-guided (EG) wave property, supported in a parallel plate model for integrated magnetized semiconductor waveguide, are investigated in those frequency regions, where the effective permittivity is negative or positive. As with their ferrite counterparts, the leakage of the EG waves...
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Levels of creativity in architectural education
PublicationArchitectural design combines engineering science and art, thus stimulating creativity is a challenge in the didactic process. There are various levels of creativity that can be attained through architectural education. From idea to architecture (FITA) is a teaching method based on metaphorical and analogical reasoning that was developed, implemented and tested during architectural design classes in the Faculty of Architecture...
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MXenes Antibacterial Properties and Applications: A Review and Perspective
PublicationThe mutations of bacteria due to the excessive use of antibiotics, and generation of antibiotic-resistant bacteria have made the development of new antibacterial compounds a necessity. MXenes have emerged as biocompatible transition metal carbide structures with extensive biomedical applications. This is related to the MXenes’ unique combination of properties, including multifarious elemental compositions, 2D-layered structure,...
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Experimental study on the seepage flow through the ice jam
PublicationIn light of the observed climate change, there is a need for better understanding of river ice processes for managing water resources in the cold regions. Ice jams produce significant resistance which may cause rise of water level and flooding. The jam resistance is only referred to the roughness of its underside, and this approach lead to exceptional roughness coefficients which has no physical explanation. Number of evidences...
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Bio and slide bearings: their lubrication by non-Newtonian fluids and application in non conventional systems. Vol.3. Tribology processes for cells human joints and micro-bearings
PublicationW niniejszej monografii przedstawiony został aktualny pogląd dotyczący procesu smarowania stawów człowieka od strony mechaniki, a szczególnie hydromechaniki i metod matematycznych. Wyznaczono pola prędkości przepływu lepkiej, odżywczej nie Newtonowskiej cieczy biologicznej, a także powstające siły tarcia w trakcie ruchu cieczy w warstwie granicznej wokoło współpracujących powierzchni. Dodatkowo rozpatrywano przepływy potencjalne...
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Rapid assessment of the authenticity of limequat fruit using the electronic nose and gas chromatography coupled with mass spectrometry
PublicationCitrus fruits are very popular food products. There are many species and varieties of them. There are also documented cases of some citrus fruits causing a severe allergic reaction. Some species of the citrus fruits, especially hybrid ones show a reduced allergenic effect due to the lack of seeds. There is a need for rapid methods for evaluation of citrus’ botanical origin. During research, the headspace of three citrus fruits...
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Syntetyczne opioidy - najsilniejsze narkotyki. Cz.I. Rozpowszechnienie, stosowanie i charakterystyka
PublicationFentanyl stanowi silny syntetyczny środek przeciwbólowy z grupy opioidów o krótkim czasie działania, wskazanym jako lek u pacjentów paliatywnych i nowotworowych. Jest dostępny w formie plastrów transdermalnych, płynu, czy tabletek. Fentanyl wykazuje dużą pozorną obojętność dystrybucji, krótki okres półtrwania w osoczu i szeroką biotransformację. Wykorzystywany jako substancja odurzająca ze względu na silne właściwości uzależniające...
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Implication of the disulfide bridge in trypsin inhibitor SFTI-1 in its interaction with serine proteinases
PublicationFourteen monocyclic analogues of trypsin inhibitor SFTI-1 isolated from sunflower seeds were synthesized by the solid-phase method. The purpose of this work was to establish the role of a disulfide bridge present in inhibitor's side chains of Cys3 and Cys11 in association with serine proteinases. This cyclic fragment was replaced by the disulfide bridges formed by L-pencillamine (Pen), homo-L-cysteine (Hcy), N-sulfanylethylglycine...
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A chemo-mechano-thermodynamical contact theory for adhesion, friction, and (de)bonding reactions
PublicationThis work presents a self-contained continuum formulation for coupled chemical, mechanical, and thermal contact interactions. The formulation is very general and, hence, admits arbitrary geometry, deformation, and material behavior. All model equations are derived rigorously from the balance laws of mass, momentum, energy, and entropy in the framework of irreversible thermodynamics, thus exposing all the coupling present in the...
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Wykorzystanie techniki mikroekstrakcji do fazy stacjonarnej w analityce środowiskowej.**2002, 122 s. 25 rys. 31 tab. bibliogr. 465 poz. maszyn. Rozprawa doktorska /10.12.2002/ Wydz. Chem. PG Promotor: prof. dr hab. inż. Jacek Namieśnik
PublicationPrzeprowadzone badania obejmowały: opracowanie podstaw metodycznych oznacza-nia lotnych amin alifatycznych w powietrzu za pomocą GC ze wzbogacaniem te-chniką SPME; określenie warunków oraz parametrów pracy urządzenia do SPME wwarunkach badań modelowych; zbadanie wpływu temperatury, wilgotności i stę-żenia gazowej mieszaniny wzorcowej na efektywność procesu wzbogacania anali-tów z wykorzystaniem urządzenia do SPME; porównanie...
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Characterization of recombinant homocitrate synthase from Candida albicans
PublicationLYS21 and LYS22 genes from Candida albicans encoding isoforms of homocitrate synthase (HCS), an enzyme catalyzing the first committed step in the L-lysine biosynthetic pathway, were cloned and expressed as NoligoHistagged fusion proteins in Escherichia coli. The purified gene products revealed HCS activity, i.e. catalyzed the condensation of α-ketoglutarate with acetyl-coenzyme A to yield homocitrate. The recombinant enzymes were purified...
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Quasi-one-dimensional exchange interactions and short-range magnetic correlations in CuTeO4
PublicationCuTeO4 has been proposed as a crystallographically distinct, yet electronic structure analog, of the superconducting cuprates. Here, we present a detailed characterization of the physical properties of CuTeO4 to address this proposal. Fitting of magnetic susceptibility data indicates unexpected quasi-one-dimensional, antiferromagnetic correlations at high temperature, with a nearest-neighbor Heisenberg exchange of 1=164(5) K....
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Artificial Intelligence Aided Architectural Design
PublicationTools and methods used by architects always had an impact on the way building were designed. With the change in design methods and new approaches towards creation process, they became more than ever before crucial elements of the creation process. The automation of architects work has started with computational functions that were introduced to traditional computer-aided design tools. Nowadays architects tend to use specified tools...
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Development of a liquid chromatography–tandem mass spectrometryprocedure for determination of endocrine disrupting compounds infish from Mediterranean rivers
PublicationA new, sensitive and rapid method based on QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe)approach followed by ultra high performance liquid chromatography coupled with tandem mass spec-trometry (UHPLC–MS/MS) was developed for the determination of nineteen endocrine disruptors (EDCs)and related compounds belonging to different classes in various fish species. Matrix effect on the analyti-cal performance was evaluated,...
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Increased susceptibility of PARP-1 KO cells to antitumor triazoloacridone C-1305 is associated with permanent G2 cell cycle arrest.
PublicationTriazoloakrydon C-1305 jest nowym inhibitorem topoizomerazy II wykazującym wysoką aktywność przeciwnowotworową. W tej pracy badaliśmy działanie cytotoksyczne pochodnej C-1305 i jej analogu strukturalnego C-1533 wobec komórek fibroblastów mysich i dwóch mutantów, w których uszkodzono gen PARP-1. Jak wykazaliśmy, komórki z uszkodzonym genem PARP-1 są nadwrażliwe na działanie związku C-1305 w porównaniu z komórkami PARP-1 +/+ podczas...
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A New Rehabilitation Device for Balance Impaired Individuals
PublicationIn the paper authors present a device designed to improve the rehabilitation process of people with balance impairment. The discussed device (JStep) utilizes a commercially available static standing frame (stander) modified in order to fit force sensing units under the feet and in the pillows around the hips of a patient. While executing rehabilitation tasks, the patient may compensate his balance deficiency by leaning on the pillows...
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Preparation and characterization of dummy-template molecularly imprinted polymers as potential sorbents for the recognition of selected polybrominated diphenyl ethers
PublicationThe main aim of this work was to conduct the preliminary/basic research concerning the preparation process of a new dummy molecularly imprinted polymer (DMIP) materials. Developed DMIPs were proposed as a sorption material in solid-phase extraction (SPE) technique for recognition of selected low mass polybrominated diphenyl ethers (PBDEs) e PBDE-47 and PBDE-99. Four new DMIPs were synthesized employing bulky polymerization technique...
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Biomimetic zinc(II) and cobalt(II) complexes with tri-tert-butoxysilanethiolate and imidazole ligands - structural and spectroscopic studies.
PublicationNowe heteroleptyczne kompleksy tri-tert-butoksysilanotiolanowe Zn(II) i Co(II) z dodatkowymi ligandami imidazolowymi zostały scharakteryzowane strukturalnie i spektralnie. Otrzymano kompleksy o różnych centrach koordynacji w zależności od ligandów imidazolowych. Dla jonów Co(II)otrzymano kompleksy o rdzeniach: NOS2 (z cząsteczką metanolu jako O-donorowy ligand) w związku 2', NO2S2 w 2'', N2S2 w 1, zaś w przypadku jonów Zn(II):...
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Kompozyty poliuretanowo-gumowe otrzymane przy udziale recyklatów gumowych jako sposób na zagospodarowanie poużytkowych opon samochodowych
PublicationW pracy doktorskiej przedstawiono wyniki badań dotyczące opracowania oraz charakterystyki właściwości nowych kompozytów poliuretanowo-gumowych (KPG), przydatnych do zastosowań praktycznych, otrzymywanych z trzech typów lanych elastomerów uretanowych (LEU) oraz dwóch odmian recyklatów gumowych (RG), produkowanych w procesach mechanicznego rozdrabniania poeksploatacyjnych opon samochodowych w temperaturze otoczenia i w warunkach...
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Two-spinors, oscillator algebras, and qubits: aspects of manifestly covariant approach to relativistic quantum information
PublicationThe first part of the paper reviews applications of 2-spinor methods to relativistic qubits (analogies between tetrads in Minkowski space and 2-qubit states, qubits defined by means of null directions and their role for elimination of the Peres-Scudo-Terno phenomenon, advantages and disadvantages of relativistic polarization operators defined by the Pauli-Lubanski vector, manifestly covariant approach to unitary representations...
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Projektowanie, synteza fosforowych i tiofosforowych pochodnych kumaryny, bifenylu, tyraminy oraz flawonoidów i badanie ich aktywności biologicznej jako potencjalnych inhibitorów sulfatazy steroidowej (STS)
PublicationChoroby nowotworowe są jednym z najpoważniejszych problemów z jakimi zmaga się współczesne społeczeństwo. Rak piersi jest jedną z głównych przyczyn zgonów wśród kobiet w krajach rozwiniętych, dlatego też niezbędne jest opracowanie nowych, skutecznych metod leczenia. Podstawowym problemem w selektywnym zwalczaniu komórek nowotworowych jest ich wysokie podobieństwo do komórek prawidłowych. W związku z dowodami na znaczący udział...
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PTD4 Peptide Increases Neural Viability in an In Vitro Model of Acute Ischemic Stroke
PublicationIschemic stroke is a disturbance in cerebral blood flow caused by brain tissue ischemia and hypoxia. We optimized a multifactorial in vitro model of acute ischemic stroke using rat primary neural cultures. This model was exploited to investigate the pro-viable activity of cell-penetrating peptides: arginine-rich Tat(49–57)-NH2 (R49KKRRQRRR57-amide) and its less basic analogue, PTD4 (Y47ARAAARQARA57-amide). Our model included glucose...
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DoA Estimation Using Reconfigurable Antennas in Millimiter-Wave Frequency 5G Systems
PublicationTo achieve low latency and high throughputs, future 5G systems will have to utilize complex antenna systems able to provide beamforming and direction-of-arrival (DoA) estimation capabilities. Most of the concepts available in the literature rely on analog or digital beamforming, which is well developed and can be used both at a base station and in a user terminal. However, in applications, in which...
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The Operative management in Bariatric Acute abdomen (OBA) Survey: long-term complications of bariatric surgery and the emergency surgeon’s point of view
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Correction to: The Operative management in Bariatric Acute abdomen (OBA) Survey: long-term complications of bariatric surgery and the emergency surgeon’s point of view
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Analiza obciążalności prądowej długotrwałej przewodów elektroenergetycznych z wykorzystaniem zaawansowanych metod numerycznych
PublicationNiniejsza rozprawa doktorska przedstawia analizę obciążalności prądowej długotrwałej przewodów elektroenergetycznych na przykładzie linii kablowej niskiego napięcia YKY 35 mm2. Analizę obciążalności przeprowadzono w programie ANSYS Fluent, wykorzystującym numeryczną mechanikę płynów (ang. Computional Fluid Dynamics, CFD). W analizach obciążalności prądowej długotrwałej przewodów (kabli) elektroenergetycznych uwzględniono następujące...
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Grimm Grass 1 (Słówka Grimmów)
PublicationKrzysztof Wróblewski | Eksperyment: Ekslibris - ekslibris do powieści „Słówka Grimmów” Güntera Grassa LINK DO PREZENTACJI EKSLIBRISU → https://youtu.be/823ryLQzxas W swoim ekslibrisie Krzysztof Wróblewski sięgnął po technikę graficzną linorytu. Dzięki niej artysta osiągnął efekt powtarzalnego, dynamicznego znaku-plamy, który stanowi kwintesencję wypowiedzi z pogranicza sztuk wizualnych i literatury. Zainspirowany poezją konkretną,...
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Grimm Grass 2 (Słówka Grimmów)
PublicationKrzysztof Wróblewski | Eksperyment: Ekslibris - ekslibris do powieści „Słówka Grimmów” Güntera Grassa LINK DO PREZENTACJI EKSLIBRISU → https://youtu.be/823ryLQzxas W swoim ekslibrisie Krzysztof Wróblewski sięgnął po technikę graficzną linorytu. Dzięki niej artysta osiągnął efekt powtarzalnego, dynamicznego znaku-plamy, który stanowi kwintesencję wypowiedzi z pogranicza sztuk wizualnych i literatury. Zainspirowany poezją konkretną,...
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Novel therapeutic compound acridine–retrotuftsin action on biological forms of melanoma and neuroblastoma
PublicationPURPOSE: As a continuation of our search for anticancer agents, we have synthesized a new acridine-retrotuftsin analog HClx9-[Arg(NO2)-Pro-Lys-Thr-OCH3]-1-nitroacridine (named ART) and have evaluated its activity against melanoma and neuroblastoma lines. Both tumors develop from cells (melanocytes, neurons) of neuroectodermal origin, and both are tumors with high heterogeneity and unsatisfactory susceptibility to chemotherapies....
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Ultra-Wideband Vivaldi Antenna with an Integrated Noise-Rejecting Parasitic Notch Filter for Online Partial Discharge Detection
PublicationPower transformers and gas-insulated switchgear (GIS) play crucial roles in electrical power grids. However, they may suffer from degradation of insulation material due to wear and tear, leading to their imminent failure. Partial discharges (PDs) are an initial sign of insulation materials degradation which emit signals spanning various physical domains, including electromagnetic. PDs are temporally narrow, high-frequency, stochastic...
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Exploring the Antitumor Efficacy of N-Heterocyclic Nitrilotriacetate Oxidovanadium(IV) Salts on Prostate and Breast Cancer Cells
PublicationThe crystal structures of two newly synthesized nitrilotriacetate oxidovanadium(IV) salts, namely [QH][VO(nta)(H2O)](H2O)2 (I) and [(acr)H][VO(nta)(H2O)](H2O)2 (II), were determined. Additionally, the cytotoxic effects of four N-heterocyclic nitrilotriacetate oxidovanadium(IV) salts— 1,10-phenanthrolinium, [(phen)H][VO(nta)(H2O)](H2O)0.5 (III), 2,2′-bipyridinium [(bpy)H][VO(nta)(H2O)](H2O) (IV), and two newly synthesized compounds...