cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.34808/f6fc-4e72
title: Plaque of Dorothy and John Brandes in St. Mary's Church in Gdańsk

description: The data set concerns epigraphy. It refers to the plaque placed in St. Mary’s Church in Gdańsk, that is dedicated to John Brandes, highly influential citizen of Gdańsk, whose official career was crowned with the function of mayor, and his wife Dorothy née Zimmermann. The plaque was placed in the church in 1586. Data set contains two photos of the plaque, transcription of its text in Latin and its translation in Polish.
DOI: 10.34808/73h8-f014
title: SEM micrographs of Ti tooth implant corrosion

description: The dataset contains micrographs made with a scanning electron microscope (SEM) Hitachi S-3400N of the tooth implant removed after inflammation. The inflammation was induced by the increased corrosion rate of the titanium screw. The reason for the corrosion to occur was the appearance of the concentration cell of different aeration for various areas of the screw. The more aerated area was a cathode, while the less aerated area was an anode.
DOI: 10.34808/egb7-dt65
title: Epitaph of Clemens and Gabriel Coelmer in St. Mary's Church in Gdańsk

description: The data set concerns epigraphy. It refers to the epitaph placed in St. Mary’s Church in Gdańsk which is dedicated to Clemens and Gabiel Coelmer, sons of a Gdańsk merchant; Clemens devoted himself to a clerical career in Gdańsk and became a councilor. The data set contains one general photo of the epitaph, transcription of its text in Latin, its Polish translation, and the short biography of the deceased, also in Polish.
DOI: 10.34808/jq38-xj88
title: state aid for sustainable urban development

description: The dataset encompassed a choice of important legal acts with respect on the usage of EFRD for urban projects, a list of selected bibliography as well as a list of selected individual notifications of state aid measures being part of the Sustainable Urban Development Programme in the period  2014- 2020. As a comparison, an example of individual EC decision has been presented. It reflects the change of  EC attitude towards regional aid in urban areas, since 2014 regulated under the general block exemptions. Thanks to that the reader gets the possibility to acquire basic knowledge on the abovementioned topic and some commentary on the effectiveness of urban development aid.
DOI: 10.34808/kz55-s012
title: Simulation of a linear pneumatic actuator with 100 mm piston diameter, 25 mm piston rod diameter and 100 mm stroke

description: The aim of the simulation was to determine the dynamics of linear pneumatic actuators with different sizes and flow properties. The simulation used the actuator dynamics model as described in [1] and the St Venant - Wantzel's mass flow rate model. The simulation experiment was to calculate the pressure changes in both chambers of the actuator as well as the position and velocity of the piston during the stroke. The simulation results were saved in the default GNU Octave (text) format. The original purpose of the experiments was to obtain data to create a neural model of a pneumatic actuator.[1] Kiczkowiak T.: Algorithms and Models Applied in the Design of Pneumatic Driving Systems (in Polish), Koszalin 2005, Publishing House of Koszalin University of Technology
DOI: 10.34808/s2bg-w279
title: Epitaph of Henry Giese in St. Mary's Church in Gdańsk

description: The data set concerns epigraphy. It refers to the epitaph placed in St. Mary’s Church in Gdańsk, that is dedicated to Henry Giese, a member of merchant family that came from Germany and settled down in Gdańsk in XVI century. Data set contains one general photo of the epitaph, transcription of its text in Latin, its translation in Polish, and the biography of the deceased, also in Polish.
DOI: 10.34808/qwys-4k62
title: Determination of viscosity changes of protein hydrolyzate solutions depending on shear rate

description: Rheological characteristics of connective tissue protein solutions were made on the basis of viscosity measurement using a Brookfield viscometer using LV SC4 - 27 spindles and shear rate of 85 s-1 (Fig. 1). Solutions of protein hydrolysates with a concentration of 2% in 0.5M acetic acid were prepared.
The data allowed to characterize the used protein hydrolysates and evaluate their functional parameters as substances modifying rheologies of food products stored in refrigerated conditions. Fig.1. Brokfield rotational viscometer - model DV-III +.
DOI: 10.34808/j9tq-z081
title: Epitaph of George Hojer in St. Mary's Church in Gdańsk

description: The data set concerns epigraphy. It refers to the epitaph placed in St. Mary’s Church in Gdańsk, that is dedicated to George Hojer, a citizen of Stralsund, who was travelling all over the Europe and unexpectedly died in Gdańsk in 1585 at the age of 25 during his way back home from Riga. Data set contains one general photo of the epitaph, transcription of its text in Latin, its translation in Polish, and the biography of the deceased, also in Polish.
DOI: 10.34808/1hng-2573
title: Simulation of a linear pneumatic actuator with 100 mm piston diameter, 25 mm piston rod diameter and 200 mm stroke

description: The aim of the simulation was to determine the dynamics of linear pneumatic actuators with different sizes and flow properties. The simulation used the actuator dynamics model as described in [1] and the St Venant - Wantzel's mass flow rate model. The simulation experiment was to calculate the pressure changes in both chambers of the actuator as well as the position and velocity of the piston during the stroke. The simulation results were saved in the default GNU Octave (text) format. The original purpose of the experiments was to obtain data to create a neural model of a pneumatic actuator.[1] Kiczkowiak T.: Algorithms and Models Applied in the Design of Pneumatic Driving Systems (in Polish), Koszalin 2005, Publishing House of Koszalin University of Technology
DOI: 10.34808/n082-c150
title: Ball on disk test AL(rf.)-Al2O3-r15

description: Hard particle reinforced Al6061 alloy testing. Laser remelting and kinetic injection of particulate material. Ball on disc tribological test. Ball material: Al2O3. Ball diameter: 5 mm. Sliding path radius: 15 mm. Disk material: Al6061 not treated (reference).
DOI: 10.34808/3xzs-s638
title: Potential energy curve, rovibrational energies and nuclear wave functions of 2 singlet Pi state in KLi dimer

description: This data sets contains potential energy curve, energy levels and nuclear wave functions of rovibrational states of KLi dimer in 2 singlet Pi electronic state. Potential energy curve (PEC) for the electronic state was calculated in the Born-Oppenheimer approximation by the means of effective core potentials and MRCI method. Nuclear wave functions and rovibrational energy levels were obtained via solving effective one dimensional Schrodinger equation with obtained PEC.
DOI: 10.34808/5t9v-qn97
title: Sliding friction of alumina (Al2O3) with friction induced vibrations

description: Test files containing data on experiments in self mated sliding contact of alumina Al2O3 lubricated with either water or paraffin oil. Tests run in variable load/velocity conditions and with different dynamic settings of the test rig (PT-3 tribometer). The aim of the research was to attempt in finding correlations between the dynamic characteristics of the mechanical system (inertia, rigidity, damping), self excited frictional vibrations and the results of the tribological experiments on sliding friction, especially with regard to monolithic ceramic materials.
Data set contains processed measurement files espressed in values reflecting the physical units of the parameters of the test. Data format: Matlab. Each folder contains a single test run (approx. 30 s long) with a short description in a *.txt file (in Polish), containing basic parameters of the test (load, velocity, sampling frequency, inertial parameters of the test set up, lubricant etc.).
DOI: 10.34808/sgwt-z104
title: Sepulchral plate of Dorothy and Matthias Zimmermann in St. Mary's Church in Gdańsk

description: The data set concerns epigraphy. It refers to the sepulchral plate placed in St. Mary’s Church in Gdańsk which is dedicated to Dorothy and Matthias Zimmermann, a wealthy merchant and Gdańsk mayor, trusted courtier of King Alexander Jagiellon. The data set contains one general photo of the sepulchral plate, transcription of its text in Latin, its Polish translation, and the short biography of the deceased, also in Polish.
DOI: 10.34808/h0e0-9868
title: Permanent traffic count stations - expressway S6 Poland  2016

description: The data includes traffic data from permanent traffic count stations located on the expressway S6 in the Tri-City Agglomeration area in Poland. The data covers the 12 months of 2016.
Tricity Bypass Road (expressway S6) is the eastern end segment of the Polish National Road No. 6 which runs along the Baltic coast between the cities of Szczecin and the Tricity Metropolitan Area, comprising the cities of Gdansk, Sopot and Gdynia. The expressway runs North-South along the edge of the metropolitan area and constitutes a key element of the transportation system in the area.
A permanent traffic count station is located in the middle of the expressway, between Gdansk Osowa and Gdansk Owczarnia interchanges. The station has 4 inductance loops per lane installed according to TSL and HA specification. Data are collected continuously and comprise for each vehicle: time of passage, spot speed, class and length, gap between cars.
Data set for the whole year of 2016 was analyzed, including two directions: Southbound and Northbound. Over 27 million vehicles were registered by the station during the year. Data were aggregated in 1-hr and 24-hr intervals. Average daily volumes were 37 thousand vehicles Southbound and almost 38 thousand Northbound, with between 6.3% and 8.4% of heavy vehicles.
This study is part of MOP-DZ research project: RID2B - Modern methods of calculating the road capacity and assessment of traffic conditions of roads outside municipal agglomerations, including expressway roads, financed by the National Centre for Research and Development (Poland) and the General Directorate for National Roads and Motorways.
DOI: 10.34808/x7yr-3f67
title: Dynamics of a linear pneumatic actuator with 80 mm piston diameter and 150 mm stroke subjected only to a mass load of 2570 g

description: The aim of the study was to determine the dynamics of a linear pneumatic cylinder subjected only to mass load. An actuator of one of the well known European manufacturers was tested.The experiment were to measure pressure changes in both chambers of the actuator and the position of the piston during stroke and retracting. The test was repeated 11 times. The obtained data, besides analysis of the dynamics of the actuator, allow verification of the correctness of its simulation models and even estimation of variable friction forces. The raw measurement data were saved in the default (text) GNU Octave format. The conversion functions for measuring sensors are also given.
DOI: 10.34808/cp3p-4w75
title: The results of physico – chemical and microbiological testing of watercourses around the municipality of Gdańsk in 2004

description: The dataset contains the results of a bacteriological and physico-chemical study of watercourses waters within the administrative boundaries of Gdańsk city in 2004. The examined material consisted of water samples collected from 15 watercourses within the administrative boundaries of Gdańsk, Poland.
DOI: 10.34808/8cq0-2r35
title: The AC motor voltage and audible noise waveforms in ship’s electrical drive systems with frequency converters

description: The presented dataset is part of research focusing on the impact of the ship's electrical drive systems with frequency converters on vibrations and the level of audible noise on ships.
The influence of electric disturbances on audible noise in frequency controlled AC drive systems were examined. The conclusion of the study was to indicate that applying a filter connected at the output of the frequency converter not only reduces the level of electrical disturbances in the AC motor voltage but also significantly decreases the level of an acoustic noise of the motor.
The experiments based on a model of the marine drive system with a frequency converter were performed at the laboratory of the Department of Ship Automatic Control at Gdynia Maritime University. The measurements were carried out for two cases, first, the squirrel cage asynchronous motor was connected directly to the output of the frequency converter, then to confirm the thesis of the correlation between harmonics contents in motor voltage waveforms and acoustic noise of the motor, the sinusoidal LC passive filter was connected at the output of the frequency converter. During tests, the motor was nominally loaded with the use of the DC generator connected to an adjustable resistor. The sound level meter was pointed directly to the source, positioned at a distance of 1m from the motor lifting eye, in the motor axis of symmetry, from the drive end, 1m above the floor.
The data acquisition of audible noise level (A-weighed) and voltage waveforms were carried out with the digital measurement system. The block diagram of the measurement system is shown in Figure. The AC motor voltage and audible noise waveforms were recorded in digital form, for the few different output voltage frequencies fout (20 Hz, 23 Hz, 25Hz, 40 Hz, 46 Hz, 50 Hz) and few different inverter’s transistors switching frequencies fsw (3 kHz, 6 kHz, 12 kHz). Then, the measurement procedure was repeated with the output LC passive filter, for all output voltage frequencies fout and two inverter’s transistors switching frequencies fsw (6 kHz, 12 kHz). The sampling frequency was equal to 20 000 Hz and is inserted in the first row of attached files, in which voltage values are saved in the form of text data. The values of the voltage samples in volts are smaller than the motor supply line voltage due to the attenuation brought by the voltage isolating sensor. The measured sound level has been A-weighed during experiments. The sound files are in a PC wave file (.wav) format.
The files are described as follows: name (U - voltage, H - sound) fsw _ fout  for data, which was recorded while the motor was supplied directly from the frequency converter. Data from measurements, with the output LC sinusoidal filter, can be found in the files described as follows, name (U - voltage, H - sound) fsw_fout_filter.  The block diagram of the digital system for measurement and analysis of audible noise and disturbances in the motor supply line
DOI: 10.34808/yy5r-dn47
title: Simulations of flows in the coastal zone of the Baltic Sea

description: The study area is located in the Southern Baltic, within Polish Marine Areas, adjacent to the coastline in the vicinity of Lubiatowo village, where The Coastal Research Station (CRS) – a field laboratory of the Institute of Hydro-Engineering of the Polish Academy of Sciences (IBW PAN) –is situated. The numerical reconstruction of the coastal flow was performed with the use of XBeach model (Roelvink et al., 2010). The model solves coupled 2D horizontal equations for wave propagation, flow, sediment transport and bottom changes. XBeach model settings which were applied for the purposes of this calculations: (i) neglecting of sediment transport and bottom changes, (ii) wave current interaction option, (iii) stationary wave boundary condition at the seaward boundary, which means that a uniform, constant wave energy distribution is set, based on the given values of wave height and period; Neumann lateral boundaries (iv) the roller model which can give a shoreward shift in a wave-induced setup, return flow and longshore current. The gap in the bar was artificially introduced into the bathymetry in order to simulate the rip channel.
Presented dataset consists of output of XBeach model simulations (xboutput.nc) for wave conditions described in  A. Dudkowska, et al.: Rip currents in the non-tidal surf zone with sandbars: numerical analysis versus field measurement (2020).  The model parameters are included in text files (params.txt).
DOI: 10.34808/0h3v-a052
title: PA32 aluminum alloy - tensile properties

description: In addition to steel, aluminium alloys are the main building material used in the shipbuilding industry. Due to its undoubted advantages, such as low density (nearly three times lower than in the case of steel for shipbuilding) and high corrosion resistance, it is often used for hulls of yachts and small vessels as well as superstructures. For safety exploitation of structure made in full or in part of aluminium alloy, it is necessary that alloy meets the strength criteria such as yield point (proof strength), ultimate strength, elongation at break. There are many different alloys with totally different mechanical properties. The most of these parameters are determined in a standardized test - static tensile test. This is a destructive test, a sample of test material is destroyed and can no longer be used.
Dataset is dedicated mainly to students, for their own analysis of material behavior during a static tensile test. It can also be used to calibrate numerical models. Dataset contains a record of five tensile tests of PA32 duraluminium alloy. The tests were carried out in accordance to PN-EN ISO 6892:2016-09 standard, record of displacement from the traverse of the testing machine. Raw data.
DOI: 10.34808/ebg9-7464
title: 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_v_2

description: Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.
Rotational specimen (ring) dimensions 15.2 mm ID, 22 mm OD. Non-rotational specimen prismatic: 30x30x5 [mm], FDM 3D printed  of ABS thermoplasic material.  Thicknesses of 3D print layer: 0,39 [mm]. Prismatic specimen orientation in print: vertical. Prismatic specimen individual number in set: 2.
Test conditions: sliding friction (rotation of the ring specimen), constant load (400N) & velocity (0.1 m/s). Intermittent test regime - sequence of 5 minute consecutive test runs with specimen examination at intermissions.
Output data (time domain): friction coefficient, wear, temperature.
DOI: 10.34808/9aj1-1977
title: Database of the minimal sets of Lefschetz periods for Morse-Smale diffeomorphisms of a connected sum of g real projective planes.

description: Morse–Smale diffeomorphisms, structurally stable and having relatively simple dynamics, constitute an important subclass of diffeomorphisms that were carefully studied during past decades. For a given  Morse–Smale diffeomorphism one can consider “Minimal set of Lefschetz periods”, which provides the information about the set of periodic points of considered map, as  it is the subset of  its minimal periods.
The dataset consists of 54 files indexed by  numbers g=1,...,54. Each file provides all minimal sets of Lefschetz periods for Morse–Smale diffeomorphisms of N(g), a non-orientable compact surface without boundary of genus g (i.e. a connected sum of g real projective planes).
The  algorithm for computing the datasets, as well as its justification, are available in the paper: G. Graff, M. Lebiedź, A.  Myszkowski, Periodic expansion in determining minimal sets of Lefschetz periods for Morse–Smale diffeomorphisms, J. Fixed Point Theory Appl. (2019) 21:47, https://doi.org/10.1007/s11784-019-0680-4.
DOI: 10.34808/jscy-tk72
title: The influence of the type of composition of PVA-chitosan blends on stability at elevated temperature

description: The dataset shows the results of a visual evaluation of chitosan and polyvinyl alcohol composites. The composites were prepared by combining chitosan water solutions, dissolved in selected acids, and polyvinyl alcohol solution, freeze drying, and heating at 150°C dry composites. The results confirm that the chitosan / PVA composites, in which the first polymer was dissolved with carbonic acid, are characterized by the highest thermal stability.
DOI: 10.34808/k5yx-he26
title: The influence of the distance of the pyrometer from the surface of the radiating object on the accuracy of measurements

description: During the COVID-19 epidemic, non-contact body temperature measurement has become very important. This dataset contain results of measurements of the four professional commercially available pyrometers. The CHY 314P, TM-F03B, TFA 31.1125 and Abatronic AB-8855 where tested in function of measuring distance from the surface of the radiating black body. Set temperature of the black body was 81 °C to allow easy catch when the measurement starts to be incorrect. The dataset contains also results of calculated pyrometer view area in function of measuring distance.
DOI: 10.34808/fjz3-n879
title: Simulation of a linear pneumatic actuator with 32 mm piston diameter, 12 mm piston rod diameter and 50 mm stroke

description: The aim of the simulation was to determine the dynamics of linear pneumatic actuators with different sizes and flow properties. The simulation used the actuator dynamics model as described in [1] and the St Venant - Wantzel's mass flow rate model. The simulation experiment was to calculate the pressure changes in both chambers of the actuator as well as the position and velocity of the piston during the stroke. The simulation results were saved in the default GNU Octave (text) format. The original purpose of the experiments was to obtain data to create a neural model of a pneumatic actuator.[1] Kiczkowiak T.: Algorithms and Models Applied in the Design of Pneumatic Driving Systems (in Polish), Koszalin 2005, Publishing House of Koszalin University of Technology
DOI: 10.34808/n55x-xb67
title: Ball on disk test AW4_11-Al2O3-r25

description: Hard particle reinforced Al6061 alloy testing. Laser remelting and kinetic injection of particulate material. Ball on disc tribological test. Ball material: Al2O3. Ball diameter: 5 mm. Sliding path radius: 25 mm. Disk material: Al6061 WC powder injected (AW4_11).
DOI: 10.34808/zhvn-s969
title: 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_h_4

description: Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.
Rotational specimen (ring) dimensions 15.2 mm ID, 22 mm OD. Non-rotational specimen prismatic: 30x30x5 [mm], FDM 3D printed  of ABS thermoplasic material.  Thicknesses of 3D print layer: 0,09 [mm]. Prismatic specimen orientation in print: horizontal. Prismatic specimen individual number in set: 4.
Test conditions: sliding friction (rotation of the ring specimen), constant load (400N) & velocity (0.1 m/s). Intermittent test regime - sequence of 5 minute consecutive test runs with specimen examination at intermissions.
Output data (time domain): friction coefficient, wear, temperature.