cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.34808/5kaa-by82
title: Dynamics of a linear pneumatic actuator with 80 mm piston diameter and 100 mm stroke subjected only to a mass load of 1650 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/secj-9y72
title: Foundation text of St. Mary's Church in Gdańsk

description: The data set concerns epigraphy. It refers to the medieval foundation preserved on the wall above the sacristy entrance in St. Mary’s Church in Gdańsk, which confirms that the foundation stone of the temple was laid on 28th of March 1343. The data set contains one general photo of the foundation text, transcription of its text in Latin and its Polish translation.
DOI: 10.34808/tnq7-nd63
title: Biomass of macrophytobentos in the Puck Bay in 2010-2018

description: The database contains data on qualitative composition and biomass of macrophytobenthos (flower plants and macroalgae) in samples collected in the Puck Bay area (Gulf of Gdańsk, southern Baltic Sea) at 20 stations between 2010-2018. The database contains information on sampling sites (region, geographical coordinates, depth), sample characteristics (date, field worker, lab worker, degree of vegetation cover, field research equipment, total sampling area, dissemination of data - publication), taxa (updated name according to the World Register of Marine Species web page, APHIA ID code, LSID algabase database) and biomass of identified taxa (g of dry matter). The data was supplemented with additional information: values of measured parameters of water and sediment, e.g. temperature and salinity of water, sediment granulometry, and selected photos documenting the identified taxa.
The data show the changes that have occurred in macrophytobenthic communities over the years.
DOI: 10.34808/e3k4-kc04
title: Phylogenetic trees of genus Oncidium Sw. based on analysis of DNA sequences

description: Genus Oncidium Sw. is widely regarded as a polyphiletic, and the taxonomic boundaries between him and such genera as Odontoglossum Kunth. or Miltonia Lindley remain blurred. The aim of the study was to determine the phylogenetic relationships within the genus Oncidium s.lato based on the DNA sequences analysis. The correlation between molecular data and geographical distribution of the studied species was also examined. Two markers were used for the analysis: the ITS sequence derived from the nuclear genome and the matK gene that is part of mitochondrial DNA. Sequences were obtained by DNA isolation from frozen leaves, polymerase chain reaction (PCR) and sequencing. For their analysis in the PAUP* program, a feature-based parsimony (MP) method was used, and for assessing the reliability of the resulting trees, the non-parametric bootstrap method. The ITS MP search resulted in 10 000 trees (CI=0.49; RI=0.631). The aligned matrix resulted in 814 characters of which 433 were parsimony informative. The matK MP search resulted in 10 000 trees (CI=0.505; RI=0.714). The aligned matrix resulted in 1359 characters of which 358 were parsimony informative. 
This dataset contains two image files with phylogenetic trees - the first one based on ITS analysis of 190 species and the second one based on the matK analysis of 154 species. The upper numbers above branches are the Fitch values and lower numbers are the bootstrap values. The information about geographical distribution is added.  The dataset includes also two NEXUS files (for ITS and for matK) with DNA sequences.
DOI: 10.34808/7bg7-qb50
title: The results of physico – chemical and microbiological testing of watercourses around the municipality of Gdańsk in 2010

description: The dataset contains the results of a bacteriological and physico-chemical study of watercourses waters within the administrative boundaries of Gdańsk city in 2010. The examined material consisted of water samples collected from 16 watercourses within the administrative boundaries of Gdańsk, Poland.
DOI: 10.34808/s5b1-9e72
title: Monitoring of activities carried out as part of prototyping and implementation of the pilot project in the area of the "Polanki" market and its and its direct neighbourhood, in the Gdańsk-Oliwa district, step1;  stage from October 2020 year.

description: The data presents tabular monitoring lists (quantitative and qualitative documentation report in the form of tables) of activities carried out as part of prototyping and implementation of the pilot project in the area of the Polanki market and its immediate vicinity in the Gdańsk-Oliwa district in 2020 year - step 1, stage from July 2020. The monitoring of the Market covers the spatial, functional and analysis of use by residents. Monitoring was carried out systematically from October 2020 to November 2020 (earlier monitoring was not possible due to the introduction of restrictions related to the COVID 19 pandemic). Monitoring was carried out through in situ visits with the use of the Monitoring Card. Monitoring documentation was supplemented with photo documentation. Monitoring is the basis for subsequent analyzes used in the implementation of the pilot project of the “Polanki” Market.
DOI: 10.34808/gb06-wn56
title: UE regional state aid for territories with low standard of living

description: The dataset encompassed a choice of important legal acts, a list of selected Polish bibliography and a list of important individual decisions issued on the topic of regional state aid ( for investment purposes) in Poland in the periods 2007- 2013 and 2014- 2020. Thanks to that the reader gets the possibility to acquire basic knowledge on the abovementioned topic, both in historic and current view, especially with regard to the regional operational programs and projects.
DOI: 10.34808/vk66-m260
title: Value of tax preferences by areas of support and types of taxes in 2012

description: These data contain information prepared by the Ministry of Finance on the value of tax preferences by areas of support and types of taxes in 2012.
Tax preferences are a tool of tax policy. Their role is to stimulate desired activities of taxpayers, providing support to certain sectors and types of activity and monitoring the progressivity of tax burdens.
For the purposes of the following dataset, the tax incentives were separated into nine areas of support, i.e .:1) economy,2) agriculture,3) employment,4) education, science, culture, sport,5) public benefit organizations, churches, social and civic organizations,6) health,7) family and social assistance,8) transport and environmental protection and9) other - including preferences that cannot be assigned to other groups.
DOI: 10.34808/mp8f-2348
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: 019_v_5

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: 0,19 [mm]. Prismatic specimen orientation in print: vertical. Prismatic specimen individual number in set: 5.
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/z5k9-7x70
title: State aid for entrepreneurs at special economic zones

description: The dataset encompasses a choice of important legal acts, a list of selected Polish  bibliography and a list of important individual sentences issued on the topic of state aid for entreprenuers investing at special economic zones. Thanks to that the reader gets the possibility do acquire basic knowledge on the above mentioned topic.
DOI: 10.34808/r2ds-fj20
title: Simulation of a linear pneumatic actuator with 32 mm piston diameter, 12 mm piston rod diameter and 500 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: 10.34808/8wws-td98
title: Minimal number of periodic points with the periods less or equal to r in the smooth homotopy class of simply-connected manifolds of dimension 4 and homology groups with the sum of  ranks less or equal to10

description: An important problem in periodic point theory is minimization of the number of periodic points with periods &lt;= r in a given class of self-maps of a space. A closed smooth and simply-connected manifolds of dimension 4 and its self-maps f  with periodic sequence of Lefschetz numbers are considered. The topological invariant Jr[f] is equal to the minimal number of periodic points with the periods less or equal to r in the smooth homotopy class of f. For sufficiently large r the invariant Jr[f] is independent of the choice of r and in that case it is natural to write J[f] instead of Jr[f]. We provide the values of the simplified version of the invariant: J[f] (mod 2) (which is equal either J[f] or J[f]+1) for  manifolds of dimension 4 having the sum of ranks of homology groups less or equal 10. The results are based on the combinatorial scheme for computing J[f] introduced in “Minimization of the number of periodic points for smooth self-maps of simply-connected manifolds with periodic sequence of Lefschetz numbers” by G. Graff and A. Kaczkowska, [Cent. Eur. J. Math., 10(6), 2012, 2160-2172, https://doi.org/10.2478/s11533-012-0122-7]. The data contains text files of the form J[vector_of_ranks _of_homology_groups].txt. Each file consists of all possible triples, structured as follows: the first position contains a sequence of lists, where the i-th list corresponds to the degrees of non-zero eigenvalues of the i-th induced homomorphism, the second position contains a set of non-zero periodic expansion coefficients, the third position contains corresponding value of the invariant J[f].
DOI: 10.34808/fadj-np77
title: Water currents in Głębinka Passage in late spring of 1975

description: Data set contains the results of the field measurements of horizontal water currents carried out in the Głębinka Passage in Puck Bay  (Southern Baltic, Poland) in 1975 by Department of Physical Oceanography (Institute Oceanography, University of Gdańsk). Głębinka Passage is a narrow strait playing crucial role in water exchange between shallow and deep parts of Puck Bay. The velocity and direction (azimuth angle) of the water current were measured with the use of BPW-2 current meters at 0.5 and 2 m above the bottom at two stations where the water depth is c.a. 5 m. The continous time series of water current data, with time resolution of 0.5 h,  covers 31 days: 12-31.05, 1-12.06.
DOI: 10.34808/tbaa-6728
title: SEM micrographs of cavitation erosion-corrosion of aluminium alloy 2024 with anodic polarization

description: The dataset contains Scanning Electron Micrographs of aluminium alloy 2024 samples made after cavitation erosion-corrosion exposure using a vibratory transducer (in accordance with ASTM G32). The experiment duration was 240 min, with cyclic cavitation exposure in on/off cycles 30s:30s. The electrolyte was 0.1 M KNO3 solution. Some samples were anodically polarized by +0.5 V with reference to open circuit potential (labeled as _pol). The samples were mounted directly underneath the ultrasonic transducer. Different levels of cavitation erosion intensity were modulated using the variable distance between the sample and the transducer (randing 0.5 to 3 mm).
DOI: 10.34808/bw9j-yq04
title: Toxoplasma godnii recombinant chimeric antigens - IgM and IgG ELISAs - mouse serum samples

description: This study presents an evaluation of tetravalent recombinant chimeric proteins containing fragments of the Toxoplasma gondii antigens, SAG2, SAG1, GRA1, GRA2, MIC1, MAG1, ROP1 and AMA1, as potential replacements of a the soluble, whole-cell tachyzoite lysate (TLA) used in serological assays. Recombinant chimeric proteins (SAG1-MIC1-MAG1-GRA2, SAG2-GRA1-ROP1-GRA2, SAG2-GRA1-ROP1-AMA1N, AMA1N-SAG2-GRA1-ROP1, AMA1C-SAG2-GRA1-ROP1, and AMA1-SAG2-GRA1-ROP1) obtained by genetic engineering were tested for their reactivity with specific IgM and IgG antibodies from sera of experimentally infected mice and humans with T. gondii infection using an enzyme-linked immunosorbent assay (ELISA). Serum samples from patients with acquired T. gondii infection and sera from seronegative individuals were examined. The reactivity of chimeric antigens with antibodies generated during T. gondii invasion was measured and compared to the results obtained in assays based on whole-cell Toxoplasma antigen. Chimeric proteins proved effective in differentiation between T. gondii-infected and uninfected individuals (100% sensitivity and specificity in the IgG ELISAs) which shows their potential usefulness as a replacements for TLA in standardized commercial tests for the serodiagnosis of toxoplasmosis
DOI: 10.34808/z1z9-g013
title: Electronic transition dipole moment functions of the second triplet Sigma ungerade plus state of the Lithium dimer

description: Electronic transition dipole moment functions (ETDMF) of the second triplet Sigma ungerade plus (2tSu+) state have been calculated for the Lithium dimer. ETDMFs are needed in understanding processes like photodissociation, photoassociation, cooling, and trapping of molecules. The results of the five ETDMFs have been obtained by the nonrelativistic multireference configuration interaction (MRCI) method used with pseudopotentials describing the interaction of valence electrons with atomic cores. In this approach, only the valence electrons of the Li atom were treated explicitly. The core polarization potential has been also applied in calculations. All computations were performed by means of the MOLPRO program package. In all internuclear regions, presented ETDMFs reasonably agree with available previously calculated and measured results.
The dataset is arranged in six columns. &lt;Ψ_f | DMX or DMY or DMZ |Ψ_i&gt; is the x or y or z component of the electronic dipole moment between the initial state Ψ_i and the final state Ψ_f of the diatomic Lithium molecule. The first column contains distances in Bohr radius units [a0] between Lithium atoms. The consecutive five columns contain ETDMFs calculated for corresponding distances. All values are given in atomic units. All ETDMFs are provided as functions of the internuclear distance R, ranging from 2 to 90 [a0].
The symbols used for describing the initial (Ψ_i) and final (Ψ_f) states (for example 2tPg or 4sSu+) of the Li2 molecule are the following:
1 or 2 or ... - the electronic initial or final state number;
s or t - singlet or triplet state;
S or P or D - Sigma, Pi or Delta state;
g or u - gerade or ungerade state;
+ is connected only with Sigma states.
DOI: 10.34808/s1ys-7c02
title: EU state aid for fisheries and aquaculture in the perspective 2014-2020

description:  The dataset encompassed a choice of the most important legal acts, a list of selected Polish bibliography, and some examples of decisions issued by the EC on the topic of state aid for fisheries and aquaculture in Poland and in Germany. The data constitute a description of the basic state aid instruments used in practice in the period 2014-2020 for fisheries and aquaculture. Thanks to that the reader gets the possibility to acquire basic knowledge on the above-mentioned topic, especially of the EU guidelines.
DOI: 10.34808/d98n-v272
title: Minimal number of periodic points with the periods less or equal to r in the smooth homotopy class of simply-connected manifolds of dimension 6 and homology groups with the sum of ranks less or equal to10

description: An important problem in periodic point theory is minimization of the number of periodic points with periods &lt;= r in a given class of self-maps of a space. A closed smooth and simply-connected manifolds of dimension 6 and its self-maps f  with periodic sequence of Lefschetz numbers are considered. The topological invariant Jr[f] is equal to the minimal number of periodic points with the periods less or equal to r in the smooth homotopy class of f. For sufficiently large r the invariant Jr[f] is independent of the choice of r and in that case it is natural to write J[f] instead of Jr[f]. We provide the values of the simplified version of the invariant: J[f] (mod 2) (which is equal either J[f] or J[f]+1) for  manifolds of dimension 6 having the sum of ranks of homology groups less or equal 10. The results are based on the combinatorial scheme for computing J[f] introduced in “Minimization of the number of periodic points for smooth self-maps of simply-connected manifolds with periodic sequence of Lefschetz numbers” by G. Graff and A. Kaczkowska, [Cent. Eur. J. Math., 10(6), 2012, 2160-2172, https://doi.org/10.2478/s11533-012-0122-7]. The data contains text files of the form J[vector_of_ranks _of_homology_groups].txt. Each file consists of all possible triples, structured as follows: the first position contains a sequence of lists, where the i-th list corresponds to the degrees of non-zero eigenvalues of the i-th induced homomorphism, the second position contains a set of non-zero periodic expansion coefficients, the third position contains corresponding value of the invariant J[f].
DOI: 10.34808/x2cp-vy70
title: The voltage on bus bars of the main switchboard of the ro-ro ship electrical power system during a layover at the port

description: The dataset is part of the research results on the quality of supply voltage on bus bars of the main switchboard of the ship's electrical power system in different states of ship exploitation. The attached dataset contains the measurement results carried out onboard a ro-ro ship during a layover at the port.
The ro-ro ship is equipped in three-phase, three-wire electrical power systems. The ship's electrical power plant consists of two free-standing generators 1000 kVA each and two-shaft generator 1500 kVA each (see Figure 1). The nominal voltage on bus bars of the main switchboard was 400 V with a frequency equal to 50 Hz. The single free-standing generator has been used during a layover at the port. The voltage of 220V has been obtained by means of a transformer.
The voltage waveforms on bus bars of the main switchboard were recorder with the digital measuring system, which allows the simultaneous measurement of three phase-to-phase or two-phase voltages. The initial conditioning of the input signals is carried out by optoisolation amplifiers and a low-pass filter module (antialiasing). The formation of the output digital signal from the analog signal takes place in the a/d converter with a resolution of 16 bits and a sampling rate of up to 20 kS/s. Using three channels at the same time allows the maximum sampling rate of 6.6 kS/s. The block diagram of the digital measuring system is shown in Figure 2.
The files contain voltage waveforms of the output of a/d converters in [V], in three phases for 400 V and 220V networks. The attenuation and offset of the measuring path for the 220 V network are 77.6398 [V/V] and -0.017 V, respectively. For the 400 V network, the attenuation and offset of the measuring path are equal to 134.0123 [V / V] and -0.0175 V, respectively. The sampling frequency is inserted in the first row of the attached files.
The files are described as follows: ro-ro_layover_the value of the mains voltage (400 or 220)_number of the set.  Figure 1. The electrical power plant configuration on the ro-ro ship  Figure 2. The block diagram of the digital measuring system
DOI: 10.34808/jqpy-1a68
title: Sensory analysis of confectionery products.

description: The data set presents the results of the sensory analysis of confectionery products, which was carried out by the sensory profiling analysis method based on the PN-ISO 11035: 1999 standard – “Sensory analysis - Identification and selection of descriptors for determining the sensory profile using multivariate methods”. The method was used to evaluate the effect of changing the recipe of yoghurt cakes and the sensory quality of products.
DOI: 10.34808/y7fn-z307
title: The voltage on bus bars of the main switchboard of the car carrier electrical power system at sea trials during a sea voyage

description: The dataset is part of the research results on the quality of supply voltage on bus bars of the main switchboard of the ship's electrical power system in different states of ship exploitation. The attached dataset contains the measurement results conducted onboard the car carrier at sea trials. The data were recorded during a sea voyage, under normal operating conditions of the system, and when the vessel was drifting.
The car carrier is equipped in a three-phase, three-wire electrical power system. The ship's electrical power plant consists of six free-standing generators of 1500 kVA each. The nominal voltage on bus bars of the main switchboard was 3300 V and 440 V with a frequency equal to 60 Hz. The voltage of 220V has been obtained using a transformer.
The voltage waveforms on bus bars of the main switchboard were recorder with the digital measuring system, which allows the simultaneous measurement of three phase-to-phase or two-phase voltages. The initial conditioning of the input signals is carried out by optoisolation amplifiers and a low-pass filter module (antialiasing). The formation of the output digital signal from the analog signal takes place in the a/d converter with a resolution of 16 bits and a sampling rate of up to 20 kS/s. Using three channels at the same time allows the maximum sampling rate of 6.6 kS/s. The block diagram of the digital measuring system is shown in Figure.
The files contain voltage waveforms of the output of a/d converters in [V], in three phases for 440 V and 220V networks. The attenuation and offset of the measuring path for the 220 V network are 77.6398 [V/V] and -0.017 V, respectively. For the 440 V network, the attenuation and offset of the measuring path are equal to 134.0123 [V / V] and -0.0175 V, respectively. The sampling frequency is inserted in the first row of the attached files.
The files are described as follows:car_carrier_voyage_the value of the mains voltage (440 or 220), these files contain measurement data that was recorded during a sea voyage.car_carrier_drift_220_number of channels, these files contain measurement data that was recorded when the vessel was drifting.  The block diagram of the digital measuring system