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Search results for: MARINE PROPULSION SHAFTING, BEARING LUBRICATION, FLUID-STRUCTURE INTERACTION, FINITE-ELEMENT METHOD, OPTIMIZATION
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Validation of lumbar spine finite element model
Open Research DataThe functional biomechanics of the lumbar spine have been better understood by finite element method (FEM) simulations. However, there are still areas where the behavior of soft tissues can be better modeled or described in a different way. The purpose of this research is to develop and validate a lumbar spine section intended for biomechanical research....
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Finite element models used in diagnostics of transverse cracks in bridge approach pavement
Open Research DataTransverse cracks in the asphalt pavement were observed on bridge structures next to single-module expansion joints with a 5 meter approach slab set at the depth of 1 m. The finite element (FE) models of the approach pavement were created to investigate the reasons of premature cracking and crack initiation mechanism over the back edge of the abutment...
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Numerical optimization of planar antenna structures using trust-region algorithm with adaptively adjusted finite differences
Open Research DataThe dataset contains initial designs and optimization results for three planar structures that include quasi-patch antenna for WLAN applications, compact spline-parameterized monopole dedicated for ultra-wideband applications, as well as rectifier for energy harvesting with enhanced bandwidth. The numerical results for the first two structures are also...
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Analysis of the instantaneous power signal for bearing diagnostics -bearing damaged
Open Research DataThe attached dataset contains the measurement results of the instantaneous values of current and voltage, recorded during the diagnostics of a damaged bearing. Bearing diagnostics can be carried out based on the method, which relies on the measurement and analysis of the variability of the signal instantaneous power, defined as the product of instantaneous...
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Analysis of the instantaneous power signal for bearing diagnostics - bearing undamaged
Open Research DataThe attached dataset contains the measurement results of the instantaneous values of current and voltage, recorded during the diagnostics of an undamaged bearing. Bearing diagnostics can be carried out based on the method, which relies on the measurement and analysis of the variability of the signal instantaneous power, defined as the product of instantaneous...
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What entrepreneurs think about tax optimization?
Open Research DataThe study conducted on a group of 259 entrepreneurs concerned the behavioral attitudes of business owners regarding their opinion on tax optimization. From the study we will learn, among others, how tax optimization is defined according to entrepreneurs, their attitude towards it, as well as what optimization actions they have taken so far.
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Instantaneous power signal measurements for bearing diagnostics
Open Research DataBearing diagnostics can be carried out based on the method, which relies on the measurement and analysis of the variability of the signal instantaneous power, defined as the product of instantaneous current and voltage power supplied to the engines. Bearing damage causes the appearance of deformations, which are in the form of additional harmonic components...
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Data obtained by numerical simulation for X-ray focusing using a finite difference method
Open Research DataThe propagation of X-ray waves through an optical system consisting of many X-ray refractive lenses is considered. For solving the problem for an electromagnetic wave, a finite-difference method is applied.
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The experimental results of diesel fuel spray with marine engine injector
Open Research DataThe data set presents the measurement of the diesel fuel spray from with marine engine injector. The main target presents results is a study of the time course of macro parameters (spray tip penetration, spray cone angle) of fuel spray in the cylinder of marine diesel engine. The impact of ambient conditions and the geometrical parameters of the injector...
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Herbarium of Division of Marine Biology and Ecology University of Gdańsk (DMBE)
Open Research DataHerbarium of Division of Marine Biology and Ecology University of Gdańsk (DMBE) is a research herbarium encompassing specimens of vascular plants and algae hosted by the Laboratory of Marine Plant Ecology at University of Gdańsk, Poland. The aim of Herbarium is to preserve marine plant and algae collections mostly from the Gulf of Gdańsk, but the herbarium...
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The structure of vanadate glass-ceramics containing BaTiO3 measured with X-ray diffraction method
Open Research DataThe structure of vanadate glass-ceramics doped with BaTiO3 was measured by XRD. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on a preheated...
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A model of stealth maritime object having some innovative solutions concerning the object form, structure and materials.
Open Research DataThe aim of the project is to work out a model of the stealth maritime object which will have innovative solutions concerning the object form, structure and materials. These solutions should enable a modification of combinations of the object features defining the object stealth characteristics (difficulty of the object detection in the water). It is...
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Structure of ammonium vanadate synthesis by LPE-IonEx method
Open Research DataThe DataSet contains the XRD patterns, FTIR spectra of NH4VO3 crystals with different morphology obtained by the LPE-IonEx method.
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Morphology and structure of ammonium vanadates synthesis by hydrothermal method
Open Research DataThe DataSet contains the XRD patterns, FTIR spectra, and scanning electron microscopy (SEM) micrographs of ammonium vanadates synthesis by hydrothermal method from different NH4VO3 precursors. The results reveal that a mixture of (NH4)V4O10xH2O and(NH4)0.76V4O10 was obtained for both precursors, however the contribution of each phase was different for...
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Complete input data to CFD 3D model of combustion in the large marine 4-stroke engine
Open Research DataInput data to CFD and 3D model of combustion process for large marine 4-stroke diesel engine.
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The structure of 50(2Bi2O3-V2O5)-50SrB4O7 measured with X-ray diffraction method during heating
Open Research DataThe structure changes of 50(2Bi2O3-V2O5)-50SrB4O7 glass occurred during increase in temperature was measured by XRD.
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Oxygen partial pressure and temperature dependence of Gerischer element of symmetrical porous Sr0.86Ti0.65Fe0.35O3 electrode on CGO substrate
Open Research DataThis dataset contains values of Gericher element at different temperatures (800 °C, 750 °C, 700 °C, 650 °C and 600 °C)and oxygen partial pressures (20%, 10%, 5%, 1%, 0.1% and 0.01% pO2) of symmetrical Sr0.86Ti0.65Fe0.35O3 electrode sintered at 1000 °C. This values were obtained by fitting each measured impedance spectra by electrical equivalent circuit...
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Dataset of phase portraits of the fractional prey-predator model with Holling type-II interaction (without predator harvesting)
Open Research DataThe need for a fractional generalization of a given classical model is often due to new behaviors which cannot be taken into account by the model. In this situation, it can be useful to look for a fractional deformation of the initial system, trying to fit the fractional exponent of differentiation in order to catch properly the data.
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Interaction of PDA monomers with Au
Open Research DataThis dataset contains supplementary information in the form of Electrostatic difference potential (EDP) map, density of states (DOS) spectra, and adsorption geometries of polydopamine PDA monomers on the Au surface. PDA was modelled either as the oxidised (indolequinone, IQ) and reduced (dihydroxyindole, DHI) chemistries.
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The structure of strontium–borate glasses and glass-ceramics containing nanocrystallites of Bi2VO5.5. measured with X-ray diffraction method
Open Research DataThe structure of strontium–borate glasses and glass-ceramics containing Bi2VO5.5 nanocrystallites was measured by XRD.
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Experimental database of 3D lattice structure scaffolds testing
Open Research DataDataset contains results of validation (experimental testing) of 3D lattice scaffolds proposed in the paper "Mathematical approach to design 3D scaffolds for the 3D printable bone implant". There are presented three series of experimental testing for each of seven tested scaffolds:
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The structure of strontium–borate glasses and glass-ceramics containing bismuth and vanadium oxides measured with X-ray diffraction method
Open Research DataThe structure of strontium–borate glasses and glass-ceramics containing bismuth and vanadium oxides was measured by XRD.
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Topographic AFM imaging of the leaf surface with magnification of details of its morphological structure
Open Research DataTopographic imaging of the leaf surface with magnification of details of its morphological structure. Measurements in semi-contact mode. NTEGRA Prima (NT-MDT) device. NSG 01 probe.
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Employment structure by enterprise size in Poland in 2010-2014
Open Research DataMicro, small and medium-sized enterprises employ in total nearly 70% of all employees working in the corporate sector. Micro enterprises play a decisive role in this respect, accounting for nearly 40% of all employees. This dataset contains data showing the structure of the number of employees in enterprises in 2010-2014.
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Structure of the SME sector by economy sectors in Poland and the EU-28
Open Research DataEurostat data show that almost 75% of SMEs in Poland are trade and services, and every seventh enterprise conducts activities related to construction, and every eight - in industry. Comparing the industry structure of Polish companies with the structure of enterprises operating in EU countries, it should be noted that we are characterized by a greater...
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The surface of a fragment of the structure of an integrated circuit in the semi-contact mode.
Open Research DataThe surface of a fragment of the structure of an integrated circuit. Topographic measurements in the semi-contact mode. NTEGRA Prima (NT-MDT) device. NSG 01 probe.
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Fingerprint structure studies with semi-contact AFM
Open Research DataThe work [1] presents many, sometimes even surprising examples of the use of atomic force microscopy in modern forensics. Some of them are projectile tests using the characteristic scratch patterns created by the firing pin on the primer. There are more and more suggestions in the literature for the use of atomic force microscopy in dactyloscopy [2]....
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The structure of the enterprise sector by size in Poland and the EU-28 in 2017
Open Research DataEnterprises from the SME sector constitute the majority of companies in Poland and in the European Union countries. However, the structure of domestic enterprises in terms of size and industry differs from the EU average. Taking into account the nature of the business in Poland, more companies operate in trade, and lower in services. However, it should...
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The structure of vanadate glasses containing BaTiO3.
Open Research DataThe structure of vanadate glasses doped with BaTiO3 was measured by SEM technique. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on a preheated...
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Structure and optical measurements of Eu doped tellurium oxide thin films
Open Research DataThin films were deposited by magnetron sputtering method and simultaneously heated at 200 oC. Presence of Eu ions and their valence states was confirmed by X-ray photoemission spectroscopy measurements. The structure of the films as well as the influence of europium dopant on crystalline structure of the films was examined by X-ray diffraction method. ...
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Video recordings of static hand gestures for gesture based interaction
Open Research DataThis data set contains video recording of selected simple hand gestures related to sign language. The purpose of the data set is to evaluate different computer algorithms design for hand gesture detection as well as for hand features and hand pose detection and identification. The data set contains 5 video recordings in mp4 format. Each recording is...
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AFM analysis of duplex steel structure and composition
Open Research DataDue to the high content of alloying elements, duplex stainless steels are characterized by a complex structure of phase transitions. Among all types of intermetallic compounds, the sigma phase is of major interest due to its detrimental effect on both mechanical properties and corrosion behavior. It is an intermetallic phase enriched in Cr and Mo and...
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The structure of vanadate glass-ceramics containing BaTiO3.
Open Research DataThe structure of vanadate glass-ceramics doped with BaTiO3 was measured by SEM technique. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on...
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The structure of the enterprise sector by size in Poland and the EU-28 in 2017
Open Research DataThe majority (99.8%) of companies in the EU countries are micro, small and medium-sized enterprises - see chart. The situation is similar in Poland, but the structure of the SME sector is slightly different from that observed in the EU. In Poland, the share of micro-enterprises in the total number of enterprises is higher than in the EU countries (95.5%...
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Increasing the conductivity of v2o5-teo2 glass by crystallization: structure and charge transfer studies
Open Research DataThis is the dataset concerning the publication titled: Increasing the conductivity of V2O5-TeO2 glass by crystallization: structure and charge transfer studies. In this dataset raw data and origin project concerning this article can be found.
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The structure of lead-silicate glasses and nanocomposites doped with iron oxide
Open Research DataThe structure of iron-doped glasses and glass-ceramics were studied. Samples has the composition of 50SiO2–(50−x)PbO–xFe2O3, where x=15, 20 and 25 (in mol%). All samples were prepared by the conventional melt quenching technique; the melting was conducted in air at 1623 K in alumina crucibles. The melts were poured on a brass plate preheated to 573...
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bio-based polyester polyols - chemical structure of Miniatura 4 proper samples
Open Research DataPresented results are related with project MINIATURA 4 realization. At the document, the chemical structure of bio-based polyester polyols (poly(propylene-co-propan-1,2,3-triol succinate)s) are presented as analysis of FTIR and H NMR spectroscopy.
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The structure of lead-silicate glasses containing nanocrystallites of iron oxides
Open Research DataThe structure of iron-doped glasses and glass-ceramics were studied. Samples has the composition of (50 − 0.5x)SiO2–(50 − 0.5x)PbO–xFe2O3, where x = 2, 5, 10, 15, 20 and 25 (in mol%). All samples were prepared by the conventional melt quenching technique; the melting was conducted in air at 1623 K in alumina crucibles. The melts were poured on a brass...
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The structure of lead-borate glasses containing nanocrystallites of iron oxides
Open Research DataThe structure of iron-doped glasses and glass-ceramics were studied. Glass samples of composition of xFe2O3–(100 − x)(B2O3–2PbO) (2.5 b x b 37, in mol%) were prepared by the conventional melt quenching technique. The melting was conducted in alumina crucibles at the temperature of 1523 K. The melts were poured on a preheated (573 K) brass plate and...
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Forest habitat types in the State Forests and their age structure in the years 2019-2023
Open Research DataThe dataset contains data illustrating the area occupied by various types in the State Forests and their age structure over the years 2019-2023. It should be noted that this only concerns forests managed by the State Forests National Forest Holding. The average age is determined as a weighted average, with the area in individual age classes and subclasses...
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Structure of the register of immovable monuments in terms of the number of monuments by voivodeship – comparison of 2003 and 2024
Open Research DataThe following dataset compares the structure of the register of immovable monuments in Poland regarding the number of monuments by voivodeship for 2003 and 2024. During these years, the number of monuments increased by more than 16,000.
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Structure of foreigners registered for retirement and disability pension insurance by citizenship (%) - at the end of the year
Open Research DataThe structure of foreigners registered for insurance, divided by citizenship, changed dynamically. The share of foreigners from the EU regularly decreases (from 25.1% in December 2008 to 6.3% in December 2018), while the share of foreigners from outside the EU is steadily growing (from 74.9% in December 2008 to 93.7% in December 2018). The largest changes...
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Changes in the ownership structure of the banking sector (percentage share) in 1995-2004
Open Research DataAnalyzing the data, one can observe a steadily declining share of the State Treasury in the shareholding structure of banks. In 1995, the state owned over 40% of bank assets (counting directly the share of the State Treasury and indirectly through enterprises organized under state legal persons). At the same time, it should be noted that the NBP is...
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Straightening of ship hull structure made of 316L stainless steel - microstructure of reference material
Open Research DataThe AISI 316L type steel belongs to the group of chromium-nickel stainless steels. They are determined according to European standards as X2CrNiMo17-12-2 and belong to the group of austenitic stainless steels. Steels of this group are used for elements working in seawater environments, for installations in the chemical, paper, and food, industries,...
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Employment structure in business services centers broken down into supported process categories.
Open Research DataThe structure of business services provided in centers in Poland is highly diversified, however, the vast majority of entities provide services in several categories of business processes. IT activities and financial and accounting (F&A) services together generate slightly more than half of employment in the industry (51%). Customer Operations (14%)...
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Structure of the register of immovable monuments under the primary function – comparison of 2017 and 2024
Open Research DataThis dataset compares the structure of the register of immovable monuments in Poland under the primary function of objects for 2017 and 2024. The statement included the following primary functions of the monuments: urbanism, sacral, defence, industrial, economic, residential, public utilities, communication, cemeteries, greenery, etc. The dataset has...
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Optimization of the femtosecond laser impulse for excitation and the spin-orbit-mediated dissociation in the NaRb molecule
Open Research DataHigh accuracy ab initio potential energy curves (1tSigma+, 2sSigma+, 1tPi), electronic transition dipole moment function (1tSigma+ - 1tPi), and spin-orbit coupling (2sSigma+ - 1tPi) have been calculated for the NaRb molecule. The time-dependent excitation and dissociation processes in the polar alkali diatomic NaRb molecule and the quantum properties...
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Influence of controlled crystallization and SrF2 content on the structure and properties of Eu3+ doped phosphate glasses
Open Research DataThe attached data contains the results of measurements of phosphate glasses and glass-ceramics doped with Eu. On their basis, the new material was characterized and the influence of the SrF2 addition on the glass structure was determined. In addition, the influence of the SrF2 content and controlled crystallization on the luminescent properties of Eu3+...
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3D intact knee model used in analysis of the medial meniscus biomechanics in the osteoarthritic knee joint - input text file for computation
Open Research DataThe finite element method was used to simulate the stance phase of the gait cycle. An intact knee model with original geometry and material parametetrs was prepared based on magnetic resonance scans of the left knee joint of a healthy volunteer. The file was created in Abaqus 6.14-2, but can be read in a text editor.
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Straightening of ship hull structure made of 316L stainless steel - microstructure of naturally colled material
Open Research DataThe AISI 316L type steel belongs to the group of chromium-nickel stainless steels. They are determined according to European standards as X2CrNiMo17-12-2 and belong to the group of austenitic stainless steels. Steels of this group are used for elements working in seawater environments, for installations in the chemical, paper, and food, industries,...