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Search results for: SEABED STRUCTURE EXAMINATION
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The Influence of the Mixed DPC:SDS Micelle on the Structure and Oligomerization Process of the Human Cystatin C
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Recent improvements in prediction of protein structure by global optimization of a potential energy function
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Application of differential scanning calorimetry to study porous structure of hydrothermally modified silicas
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Developing Game-Structure Sensitive Matchmaking System for Massive-Multiplayer Online Games
PublicationProviding a fair matchmaking system is an essential issue, while developing every online video game. In the article, we show that the currently existing matchmaking system in League of Legends, one of the most popular online video games currently existing, is built on a base of conditions which do not hold true in the presence of empirical data. This, in short, decreases the effectiveness of the ranking system, and negatively affects...
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Design and experimental verification of multi-layer waveguide using pin/hole structure
PublicationThis study presents a novel technique for minimizing RF leakage in metallic hollow waveguides fabricated using the multilayer split-block method. By integrating a pin/hole wall into the split-block multilayers, a substantial reduction of RF leakage can be achieved while reducing the circuit size and mitigating the performance variations. To validate the proposed approach, a slot antenna fed by single ridge waveguide has been prototyped...
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Influence of the structure of vanadate-phosphate glasses containing alkali ions on their polaronic properties
PublicationBadano wpływ struktury szkieł wanadanowo-fosforanowych zawierających jony metali alkalicznych na ich właściwości polaronowe metodą NMR.
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Investigations of the circulation effects in the structure using ferrite coupled slot-line section
PublicationW artykule przedstawiono badania cyrkulatora zrealizowanego w oparciu o magnesowaną wzdłużnie sekcję ferrytowych szczelinowych linii sprzężonych. Zaproponowane rozwiązanie pozwala na minimalizację rozmiarów układu cyrkulatora oraz na uzyskanie parametrów porównywalnych z dotychczas publikowanymi. W treści artykułu opisano kolejne etapy projektu. Wyniki numeryczne zweryfikowano eksperymentalnie. Pomierzony układ charakteryzował...
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An EXAFS study of the local structure of rare-earth luminescence centres in the Ca3Ga2Ge3O12 glass
PublicationW pracy przedstawiono wyniki analizy EXAFS danych mierzonych na krawędzi L3 atomów ziem rzadkich takich jak Eu, Ho (0.7 wt.%) oraz Er (1.46 wt.%), którymi domieszkowano szkło 3CaO-Ga2O3-3GeO2. Otrzymane parametry strukturalne opisujące pierwszą powłokę koordynacyjną badanych atomów wskazują, że ich lokalne otoczenie tlenkowe jest jednakowe (niezależne od typu jonu ziemi rzadkiej) i uwzględniając strukturalny nieporządek bardzo...
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Effects of climate change on microbial community structure and function in Antarctic Glacier Lagoon
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Versatile Structure for Variable Fractional Delay Filter Based on Extracted Window Method
PublicationW pracy zaproponowano nową strukturę filtru ułamkowoopóźniającego o zmiennym opóźnieniu. Struktura ta umożliwia łatwą zmianę typo oraz długości implementowanego filtru. Zaproponowana struktura jest zmodyfikowaną strukturą Farrowa, której modyfikacje bazują na koncepcji metody okien wyodrębnionych. W metodzie tej filtr prawieoptymalny projektuje się stosując pojedyncze symetryczne okno wyodrębnione z dodatkową korekcją wzmocnienia...
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Detection of roles of actors in social networks using the properties of actors' neighborhood structure.
PublicationArtykuł opisuje metodę identyfikacji ról aktorów sieci społecznej. Metoda ta może być szczególnie przydatna w sieciach społecznych, o których posiadamy ograniczoną wiedzę, głównie zawężoną do lokalnych powiązań pomiędzy aktorami. Przedstawiona w artykule metoda korzysta z grafu relacji społecznych, algorytmu identyfikacji ról oraz zbioru grafów wzorców relacji. Rozwiązanie zostało przetestowane w społeczności użytkowników serwisu...
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Effect of structure modification with potassium on grains layer creation process and phase transitions
PublicationZbadano szkła germanianowo-ołowiowe i krzemianowo bizutowe. Wartwy metalicznych granul wytwarzano w nich poprzez redukcję powierzchni w atmosferze wodoru. Praca dotyczy wpływu potasu na tworzenie się warstwy granul oraz na procesy topnienia i krzepnięcia granul w trakcie obróbki termicznej.
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Crystal structure and physical properties of NpRh2Sn, a new Np-based ternary compound
PublicationPoprzez syntezę w piecu łukowym został otrzymany nowy związek o stechiometrii NpRh2Sn. NpRh2Sn krystalizuje w strukturze ortorombowej i wykazuje przejście PM-AFM w temperaturze Neela T_N = 34K.
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Oxidation Time Influence on the Structure of the Cobalt Base Clad Layer and Scale Morphology
PublicationZbadano wpływ czasu utleniania na mikrosrukutręi własności mechaniczne a w szczególności mikrotwardość, warstw wykonanych ze stopu kobaltu.Warstwy były wykonane za pomocą napawania plazmowego (PTA). Stop kobaltu podlegał utlenianiu w powietrzu w temperaturze 800 topni celsjusza w czasie 1, 22 i 200 godzin. w wyniku utleniania nastapiło uformowanie warstw zgorzeliny oraz nastapiły zmiany w mikrostrukturze. Zaobserwowano także zmiany...
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Tautomerism, structure and properties of 1,1',1''-(2,4,6-trihydroxybenzene-1,3,5-triyl)triethanone
PublicationWedług teoretycznych przewidywań 1,3,5-triacetylo-2,4,6-trihydroksybenzen może występować w 5 formach tautomerycznych, z których dwie powinny wyróżniać się wysoką stabilnością. Teoretyczne przewidywania zostały skonfrontowane z rezultatami pomiarów spektralnych.
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Influence of the glycolysis agent on the structure of the glycolysates obtained from polyether-urethane wastes
PublicationW pracy zaprezentowano wybrane wyniki badań wpływu środków glikolizujących na strukturę glikolizatów otrzymywanych w procesie glikolizy odpadowych pianek polietero-uretanowych.
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Influence of the rare-earth impurities on the Ga and Ge local structure in the Ca3Ga2Ge3O12 glass
PublicationW pracy przedstawione zostały wyniki analizy EXAFS realizowanejza pomocą metody GNXAS dla serii szkieł typu Ca3Ga2Ge3O12 domieszkowanych metalami ziem rzadkich (0.7 wt.% - Ce, Eu, Ho, Er; oraz 1.0 wt.% Nd). Badaniu poddano lokalne otoczenie wokół jonów Ge i Ga. Porównanie wyników z danymi strukturalnymi otrzymanymi dla szkła niedomieszkowanego wskazuje, że domieszka metali ziem rzadkich modyfikuje jedynie otoczenie jonów galu,...
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Structure-activity relationship studies on the antimicrobial activity of novel edeine a and d analogues
PublicationOpisano syntezę 4 nowych analogów peptydowego antybiotyku, edeiny a i d z wykorzystaniem klasycznej syntezy w roztworze. Stosowano metodę estrów aktywnych oraz metodę azydową do tworzenia wiązań peptydowych. Zbadano także aktywność przeciwgrzybową i przeciwbakteryjną opisanych połączeń.
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Impact and pitfalls of scaling of left ventricular and atrial structure in population-based studies
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Phenotypic yield and its structure variability of moderately late and late potato cultivars
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Bifunctional catalyst based on molecular structure: Spherical mesoporous TiO2 and gCN for photocatalysis
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Water related esthetics - the phenomenon of new structure in the post industrial shipyard areas
PublicationDirection of the main movements that are made in the European cities determines not only structural but also an esthetic changes. Paper follows the topic of visual diversity of post industrial waterfront cities and it’s relation to the local identity and cultural changes that are provided. Reshaping of the cities continuously proceed. Are those changes related with industrial shipyard districts only economical and spatial or also...
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Synthesis, crystal structure and electrical properties of A-site cation ordered BaErMn2O5 and BaErMn2O6
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Structure Analysis of the Modified Cast Metal Matrix Composites by Use of the Rve Theory
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Analysis of Agrarian Structure in Poland in 1921 and 2002 Based on the Example of Selected Districts
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Chromatographic behaviour of ionic liquid cations in view of quantitative structure-retention relationship
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Structure and Mechanical Properties of Composite Layers Prepared by Laser Alloying of Aluminium Alloy
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Structure and Properties of Biodegradable Poly (Xylitol Sebacate-Co-Butylene Sebacate) Copolyester
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Preparation and structure of nanocrystalline sol-gel derived Cu doped LiTi2O4 powders
PublicationAmong the spinel oxides materials, lithium titanate (Li1+xTi2-xO4 where 0 ≤ x ≤ 0.33) could be very interested from pratical applications point of view. Lithium titanate is a II type spinel oxide superconductor with relatively high (~13 K for x = 0) superconducting transition temperature Tc. Above Tc lithium titanate shows metallic behaviour and can be used e.g. as electrodes for rechargeable lithium-ion batteries. Since the discovery...
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Influence of Hydrogenation on Morphology, Chemical Structure and Photocatalytic Efficiency of Graphitic Carbon Nitride
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Fluid–Structure Interaction methods for the progressive anatomical and artificial aortic valve stenosis
PublicationCardiovascular system diseases, as aortic valve stenosis, are the main cause of mortality and morbidity among patients. There is still a room for enhancement of the diagnostic and therapeutic procedures, which will lead to improvement of the treatment. One of the remedies are the computer tools to support the medical diagnoses and prostheses design. The development of a procedure for modeling the aortic valves: anatomical tricuspid...
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Determination of Earth Pressure and Displacement of the Retaining Structure According to the Eurocode 7-1
PublicationComparative analysis of standard guidelines and findings given in EC7-1 and in Polish Standard PN-83/B-03010. Discussed guidelines concerning active and passive earth pressure as well as at rest pressure state. Wall displacement causing limit states of earth pressure and resistance. Interactive assumptions concerning intermediate earth pressure and resistance values. Conclusions and final remarks.
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Structure and magnetic properties of BeO-Fe2O3-Al2O3-TeO2 glass-ceramic composites
PublicationIn this work, glass-ceramics in the xBeO–20Fe2O3–(80-x)TeO2 system with x = 0–25 mol% were synthesized by the traditional melt quenching route and studied by inductively coupled plasma optical emission spectroscopy, X-ray diffraction, confocal microscopy, infrared and Raman spectroscopy. BeO addition was found to support the crystallization process of Fe2O3 during melting, and an increased BeO content was associated with an increased...
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Electronic structure calculations in electrolyte solutions: Methods for neutralization of extended charged interfaces
PublicationDensity functional theory (DFT) is often used for simulating extended materials such as infinite crystals or surfaces, under periodic boundary conditions (PBCs). In such calculations, when the simulation cell has non-zero charge, electrical neutrality has to be imposed, and this is often done via a uniform background charge of opposite sign (“jellium”). This artificial neutralization does not occur in reality, where a different...
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Increasing the conductivity of V2O5-TeO2 glass by crystallization: structure and charge transfer studies
PublicationIn the present paper, V 2 O 5 -TeO 2 glass was prepared by the melt-quenching technique. Crystallization of glass with a vanadium content higher than 35%mol results in an increase in electrical conductivity by a few orders of magnitude and a decrease in activation energy from ~0.40 to ~0.12 eV. In this work, a critical review of existing charge transfer models was presented on the example of V 2 O 5 -TeO 2 glass and glass–ceramics....
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Discrete modeling of micro-structure evolution during concrete fracture using DEM
PublicationW artykule pokazano wyniki dyskretne DEM dla betonu poddanego ściskaniu i rozciąganiu jednoosiowemu. Wyniki siła-przemieszczenie i zarysowania porównano z doświadczeniami. Szczególną uwagę zwrócono na zjawiska mikrostrukturalne podczas zarysowania na poziomie kruszywa.
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Effect of aggregate structure on fracture process in concrete using 2D lattice model
PublicationArtykuł przedstawia symulacje rys w betonie przy zastosowaniu nowego modelu siatkowego. Zbadano wpływ rozkładu i wielkości kruszywa oraz wpływ strefy kontaktu na nośność i propagacje rys. Obliczenia były dwuwymiarowe.
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DEM modelling of concrete fracture based on its structure micro-CT images
PublicationW rozdziale książki zawarto numeryczne wyniki mezoskopowe dotyczące postępującego pękania betonu na poziomie kruszywa. Do badania procesu pękania belki betonowej z karbem w trzech (3D) i dwóch (2D) wymiarach zastosowano metodę elementów dyskretnych (DEM). Niejednorodność betonu uwzględniono stosując czterofazowy opis: kruszywo, zaprawa, makropustki i międzyfazowe strefy przejściowe. W obliczeniach DEM na podstawie zdjęć rentgenowskich...
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The influence of selected strain-based failure criteria on ship structure damage resulting from a collision with an offshore wind turbine monopile
PublicationOffshore wind farms are developing well all over the world, providing green energy from renewable sources. The evaluation of possible consequences of a collision involves Finite Element computer simulations. The goal of this paper was to analyse the influence of selected strain-based failure criteria on ship damage resulting from a collision with an offshore wind turbine monopile. The case of a collision between an offshore supply...
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The hydrogen bond network structure within the hydration shell around simple osmolytes: Urea, tetramethylurea, and trimethylamine-N-oxide, investigated using both a fixed charge and a polarizable water model
PublicationDespite numerous experimental and computer simulation studies, a controversy still exists regarding the effect of osmolytes on the structure of surrounding water. There is a question, to what extent some of the contradictory results may arise from differences in potential models used to simulate the system or parameters employed to describe physical properties of the mixture and interpretation of the results. Bearing this in mind,...
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The hydrogen bond network structure within the hydration shell around simple osmolytes: Urea, tetramethylurea, and trimethylamine-N-oxide, investigated using both a fixed charge and a polarizable water model
PublicationDespite numerous experimental and computer simulation studies, a controversy still exists regarding the effect of osmolytes on the structure of surrounding water. There is a question, to what extent some of the contradictory results may arise from differences in potential models used to simulate the system or parameters employed to describe physical properties of the mixture and interpretation of the results. Bearing this in mind,...
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Structure-based design and evaluation of novel N-phenyl-1H-indol-2-amine derivatives for fat mass and obesity-associated (FTO) protein inhibition
PublicationFat mass and obesity-associated (FTO) protein contributes to non-syndromic human obesity which refers to excessive fat accumulation in human body and results in health risk. FTO protein has become a promising target for anti-obesity medicines as there is an immense need for the rational design of potent inhibitors to treat obesity. In our study, a new scaffold N-phenyl-1H-indol-2-amine was selected as a base for FTO protein inhibitors...
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Copper(I) halide cluster-based coordination polymers modulated by chiral ditopic dithiodianthranilide ligands: synthesis, crystal structure and photoluminescence
PublicationReaction of copper(I) halides with chiral dithiodianthranilidesmdtaandbdtaafforded polymeric complexeswhere polynuclear CuX clusters were linked together by ditopic bridging ligands into 1D chains or 2D layerstructures. In the case of racemic ligands double stranded chain polymers were formed where the Cu4X4(X = I or Br) cores are connected by enantiomeric pairs of the ditopic ligands. In contrast, a homochiralmdtaligand created...
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Results of SEM examination of chitosan/Eudragit E 100 coatings electrophoretically deposited on the Ti grade 2 substrate
Open Research DataThe database contains the images of the microstructure of the coatings observed with the SEM scanning electron microscope. The chitosan/Eudragit E 100 coatings deposited on the Ti grade 2 substrate by an electrophoresis process were tested. Different process parameters like Eudragit E 100 concentration (0.25 g and 0.5 g in 100 mL of 1% (v/v) acetic...
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Transport of Particles in Intestinal Mucus under Simulated Infant and Adult Physiological Conditions: Impact of Mucus Structure and Extracellular DNA
PublicationThe final boundary between digested food and the cells that take up nutrients in the small intestine is a protective layer of mucus. In this work, the microstructural organization and permeability of the intestinal mucus have been determined under conditions simulating those of infant and adult human small intestines. As a model, we used the mucus from the proximal (jejunal) small intestines of piglets and adult pigs. Confocal...
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Effect of hybrid modification by ceramic layer formation in MAO process and laser remelting on the structure of titanium bio-alloy Ti13Nb13Zr
PublicationTo improve the biological properties of titanium alloy Ti13Nb13Zr, hybrid modifications involving micro-arc oxidation (MAO) and Nd: YAG laser remelting were carried out in two combinations. The first consisted of laser modification before the production of the ceramic layer by the micro-arc oxidation process, and the second combination involved Nd: YAG laser modification after the MAO process. The creation of developed surface...
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Enhancing Seismic Performance of Semi-rigid Connection Using Shape Memory Alloy Bolts Considering Nonlinear Soil–Structure Interaction
PublicationSteel Moment-Resisting Frames (SMRFs) have their lateral resistance for their rigid connections, while real conditions have shown that the rigidity of a connection depends on the bolts and the end-plate thickness, which may not provide the assumed rigidity in design process. In this research, the main goal is to enhance the semi-rigid connections using shape memory alloy (SMA) bolts and explore their effects on the seismic limit-state...
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In Situ Random Microseeding and Streak Seeding Used for Growth of Crystals of Cold-Adapted beta-D-Galactosidases: Crystal Structure of betaDG from Arthrobacter sp. 32cB
PublicationThere is an increasing demand for cold-adapted enzymes in a wide range of industrial branches. Nevertheless, structural information about them is still scarce. The knowledge of crystal structures is important to understand their mode of action and to design genetically engineered enzymes with enhanced activity. The most difficult task and the limiting step in structural studies of cold-adapted enzymes is their crystallization,...
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Data on wages, gender wage gap and global value chains measured on the European Structure of Earnings Survey and World Input-Output Database.
Open Research DataThis data article describes the data and merging procedure used by Nikulin and Wolszczak-Derlacz (Nikulin and Wolszczak-Derlacz, 2022).
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The effect of high molecular weight bio-based diamine derivative of dimerized fatty acids obtained from vegetable oils on the structure, morphology and selected properties of poly(ether-urethane-urea)s
PublicationIn this work, the effect of the high molecular weight bio-based diamine on the chemical structure and selected properties of poly(ether-urethane-urea)s has been investigated. The ether-urethane prepolymer was cured using 1,4-butanediol and/or bio-based diamine. Mentioned chain extenders were used separately or in the mixture, and their different molecular weight and chemical structure resulted in obtaining materials with diversified...