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    Wyświetlanie 1-11 z 11
    Tytuł:
    Archaeometallurgical Investigations of the Early Iron Age Casting Workshop at Kamieniec. A Preliminary Study
    Autorzy:
    Garbacz-Klempka, A.
    Kowalski, Ł.
    Kozana, J.
    Gackowski, J.
    Perek-Nowak, M.
    Szczepańska, G.
    Piękoś, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/383062.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    non-destructive testing
    investment casting
    X-ray fluorescence spectroscopy
    archaeometallurgy
    Lusatian culture
    badania nieniszczące
    odlewnictwo
    promieniowanie rentgenowskie
    kultura łużycka
    Opis:
    (Chełmno land, Poland) as it is reflected through casting workshop recovered during recent excavations. Among ready products, the ones giving evidence of local metallurgy (e.g. casting moulds and main runners) were also identified. With the shrinkage cavities and dendritic microstructures revealed, the artifacts prove the implementing a casting method by the Lusatian culture metalworkers. The elemental composition indicates application of two main types of bronzes: Cu-Sn and Cu-Pb. Aside these main alloying additions, some natural impurities such as silver, arsenic, antimony and nickel were found which may be attributed to the origin of the ore and casting technology. The collection from Kamieniec was described in terms of its structure and composition. The investigations were made by means of the energy dispersive X-ray fluorescence spectroscopy (ED-XRF), scanning electron microscopy (SEM) coupled with an energy dispersive X-ray analysis system (EDS) and optical microscopy (OM). In order to fingerprint either local or non-local profile of the alloys, the ED-XRF data-set was statistically evaluated using a factor analysis (FA).
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 3; 29-34
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bronze Jewellery from the Early Iron Age urn-field in Mała Kępa. An approach to casting technology
    Autorzy:
    Garbacz-Klempka, A.
    Kowalski, Ł.
    Gackowski, J.
    Perek-Nowak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/379760.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bronze jewellery
    non-destructive testing
    investment casting
    X-ray fluorescence spectroscopy
    archaeometallurgy
    Lusatian culture
    biżuteria z brązu
    badania nieniszczące
    odlewnictwo
    spektroskopia rentgenowska
    archeometalurgia
    kultura łużycka
    Opis:
    This study characterizes the bronze jewellery recovered from the Lusatian culture urn-field in Mała Kępa (Chełmno land, Poland). Among many common ornaments (e.g. necklaces, rings, pins) the ones giving evidence of a steppe-styled inspiration (nail earrings) were also identified. With the dendritic microstructures revealed, the nail earrings prove the implementing of a lost-wax casting method, whereas some of the castings were further subjected to metalworking. The elemental composition indicates the application of two main types of bronze alloys: Cu-Sn and Cu-Sn-Pb. It has been established that the Lusatian metalworkers were familiar with re-melting the scrap bronze and made themselves capable of roasting the sulphide-rich ores. The collection from Mała Kępa has been described in terms of its structure and composition. The investigations were made by means of the energy dispersive X-ray fluorescence spectroscopy (ED-XRF), scanning electron microscopy (SEM) coupled with an energy dispersive X - ray analysis system (EDS) and optical microscopy (OM). In order to fingerprint an alloy profile of the castings with a special emphasis on the nail earrings, the data-set (ED-XRF, EDS) was statistically evaluated using multidimensional analyses (FA, DA).
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 175-183
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mite (Acari) colonization of pine chips alone and pine chips supplemented with forest litter, peat and lignite in revitalization of degraded forest soils
    Autorzy:
    Klimek, A.
    Chachaj, B.
    Gackowski, G.
    Kosakowski, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/101127.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    soil regeneration
    mulching
    microarthropods
    bioindication
    Oribatida
    Opis:
    The aim of this study was to compare colonization of pine chips without supplements and pine chips supplemented with forest litter, peat and lignite by mites (Acari), and particularly oribatid mites (Oribatida) in a two-year cycle. The study was conducted in the years 2013-2014, on microplots established in a belt of trees in a nursery in Białe Błota within Bydgoszcz Forest District. The experiment was established on four microplots (1 x 1 m). It included the following variants: C - pine chips alone, Lf – pine chips inoculated with fresh forest litter, Lf+Pe – pine chips enriched with deacidified high peat (20%) (pH 5.5-6.5) and inoculated with the litter, Lf+Li - pine chips enriched with granulated lignite (20%) inoculated with the litter. In the first year of the study, mite abundance in the chips inoculated with forest litter was significantly higher than that on microplot C. In the second year of the experiment, the abundance of these microarthropods decreased probably due to unfavorable weather conditions. The most common group of mites were usually oribatid mites that accounted for 19.7 to 80.4% of all mites. An analysis of seasonal dynamics of Oribatida abundance over the entire study cycle revealed a clear increase in their numbers in non-supplemented pine chips only on the last sampling date. Oribatida abundance in Lf variant was similar at the beginning and end of the study. Contrary to that, their number decreased in the chips supplemented with peat, and particularly those enriched with lignite. In total, 36 species of oribatid mites were identified on all microplots. The greatest boost in species diversity after the introduction of forest litter was observed in Lf chips and the smallest in Lf + Li variant. Oribatula tibialis was the most common oribatid mite in the investigated substrates. Low numbers of Oppiella nova and Tectocepheus velatus, the species having trophic associations with fungi, may indicate poor colonization of the chips, particularly those enriched with lignite, by saprotrophic organisms.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/2; 1577-1590
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mite (Acari) occurrence in selected substrates used for a restoration of degraded soils
    Autorzy:
    Klimek, A.
    Chachaj, B.
    Gackowski, G.
    Dąbrowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/101510.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    forest litter
    orchard litter
    wood chips
    reintroduction
    soil regeneration
    oribatid mites
    Opis:
    The number and groups of mites (Acari) and species composition of oribatid mites (Oribatida) were analysed in three different substrates used for the restoration of degraded soils: (1) pine forest litter, (2) apple orchard litter, and (3) pine chips. The study was conducted in the years 2011-2012, on microplots of the area of 1m2 , established in a belt of trees of a nursery in Białe Błota (Bydgoszcz Forest District). Average biannual mite density per 50 cm3 of the investigated substrates ranged from 14.6 to 54.43 individuals. The highest numbers of mites were found in shredded forest litter and the lowest in pine chips. The most abundant mites in the studied material were oribatid mites, accounting for 57.3 % of these arthropods. The highest number of oribatid mites was found in the forest litter (28), and the lowest (20) in pine chips. The number of species in both types of litter was similar in the first and second year of the study, but it rose three times in the pine chips substrate over the study period. Oribatid species in the litter substrates were dominated by the eurytopic Tectocepheus velatus, and the most abundant species in the pine chips substrate was Oribatula tibialis. The experiment indicated a possibility of practical use of the shredded litter in the reintroduction of soil mesofauna and soil regeneration. This may facilitate the soil inoculation process, e.g., by using seeders specially adapted for this purpose. Additionally, a quick colonization of wood chips by acarofauna may suggest the possibility of using them as an excellent substrate for soil regeneration.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2018, II/1; 277-291
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occurrence of mites (Acari) in the soil of a blackcurrant plantation after applications of organic mulches and mycorrhizal inoculum
    Autorzy:
    Klimek, A.
    Chachaj, B.
    Gackowski, G.
    Sas-Paszt, L.
    Treder, W.
    Malusa, E.
    Przybył, M.
    Frąc, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/101279.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    organic mulches
    mycorrhizal inoculum
    bioindication
    soil acarofauna
    oribatid mites
    Opis:
    The study was conducted in the Pomological Orchard of the Research Institute of Horticulture in Skierniewice on a plantation of blackcurrant cultivar ‘Tiben’. The following variants of the experiment were applied: control – NPK fertilization only, mulching with a peat substrate, shredded pine bark, sawdust of coniferous trees, bovine manure, plant compost, straw of cereals, and application of mycorrhizal inoculant MYKOFLOR. Mulching was performed each year in the spring in an amount of 25 dm3 per plot, and the inoculum was applied in an amount of 10 ml per shrub. Samples for acarological examinations were collected at 4 times, in the spring and autumn of successive seasons in 2012-2013. An increase in the overall density of mites, in comparison with the control surface, was observed after mulching the soil with sawdust of coniferous trees and plant compost. On all the plots, the communities of mites were dominated by mites of the order oribatid mites. For these mites, a statistically significant increase density was recorded after mulching the soil with sawdust of coniferous trees, bovine manure and plant compost. Mulching did not increase significantly the species diversity of oribatid mites. The soil of the blackcurrant plantation was found to be inhabited by relatively large numbers of two common oribatid mites species: Punctoribates punctum and Tectocepheus velatus. An increase in the population density of Punctoribates punctum was observed after mulching with peat, sawdust and compost.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2016, IV/2; 1287-1296
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occurrence of oribatid mites (Acari: Oribatida) on the sites of a new species Hierochloë repens (Host) P.B. in Bydgoszcz area
    Autorzy:
    Klimek, A.
    Gęsiński, K.
    Gackowski, G.
    Kobierski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/101145.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    invasive species
    Hierochloë repens
    oribatid mites
    biodiversity
    bioindication
    Opis:
    The study was conducted within the Bydgoszcz limits and in the vicinity of city Bydgoszcz at seven different habitats of Hierochloë repens presence: city district Fordon - (1), (2), (3) and (4); city district Kapuściska - (5), and Białe Błota near Bydgoszcz - (6) and (7). Samples for acarological analyses were collected from the plots covered with Hierochloë repens in spring (27 May) and autumn (28 October) 2014. The density of oribatid mites on the sites with Hierochloë repens was highly variable. High density of these microarthropods was characteristic of plots (2) with Convolvulo-Brometum inermis, (5) with Arrhenatheretum elatioris and (7) covered with grassy herbaceous plants growing on fertile soils. Particularly low density of oribatid mites was observed for plot (3) with Koelerio-Corynephoretea and Festuco-Brometea communities and the lowest content of carbon and nitrogen in the soil. Depending on the site and sample collection time, four to 22 species of oribatid mites were identified. Statistical analysis (Mann-Whitney U test) of mean number of species per sample s identified two groups of plots for both sample collection terms characterized by either low (1.00-3.10) or high values (3.30-7.40) of this parameter. The first group included plots (1), (3) and (6), and the second (2), (4), (5) and (7). The following species of oribatid mites dominated on the plots covered with Hierochloë repens: Tectocepheus velatus - (1), (2) and (6); Scheloribates laevigatus - (3), Oppiella nova - (4), Eupelops occultus - (5), Liebstadia similis - (7).
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/2; 1713-1724
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pattern matching algorithms in preparation of a 3D heart models
    Autorzy:
    Bernady, G.
    Gackowski, A.
    Kempny, A.
    Piórkowski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/333318.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
    Tematy:
    dopasowywanie wzorca
    symulator
    echokardiograficzne badanie przezprzełykowe
    tomografia komputerowa
    pattern matching
    simulator transoesophageal echocardiography
    computed tomography
    Opis:
    The CT2TEE is an online transoesophageal echocardiography (TEE) simulator [2] developed on the AGH University of Science and Technology. As a basis for the displayed real-time simulation it uses 3D models created by hand from the CT images. The aim of this paper is to present algorithms developed specifically for efficient editing and preparation of three-dimensional models of the heart for use in the CT2TEE simulator. A detailed description of proposed algorithms, their advantages and limitations, is provided.
    Źródło:
    Journal of Medical Informatics & Technologies; 2011, 17; 313-319
    1642-6037
    Pojawia się w:
    Journal of Medical Informatics & Technologies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The presence of mites (Acari) in pine wood chips enriched with peat and lignite inoculated with forest litter and irrigated
    Autorzy:
    Klimek, A.
    Chachaj, B.
    Gackowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/100933.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    soil regeneration
    wood chips
    soil organic horizon
    mesofauna
    Oribatida
    Opis:
    The aim of the study was to analyze the presence of mites (Acari), with special focus on indicator oribatid mites (Oribatida), in control pine wood chips and pine wood chips enriched with peat and lignite inoculated with forest litter and irrigated. The study was conducted in 2013 on microplots (1 x 1 m) located within a belt of trees in a nursery in Białe Błota. The experiments included the following variants: C - pine wood chips, Ec - pine wood chips inoculated with forest litter, Ec+Pe - pine wood chips enriched with deacidified high peat (20%) (pH 5.5-6.5) and inoculated with forest litter, Ec+Ca - pine wood chips enriched with granulated lignite (20%) (granule size 1-10 mm) inoculated with forest litter. The addition of forest litter caused an increase in total number of mites in the control pine wood chips and those enriched with peat. Mites belonging to Mesostigmata order prevailed in control chips and those enriched with forest litter and peat, while Oribatida were dominant mites in the other variants. Considering the results for the entire year, 20% addition of peat and lignite negatively affected the presence of oribatid mites, thus indicating a reduced biological activity of the substrates. The populations of oribatid mites on all microplots were clearly dominated by Oribatula tibialis, and Tectocepheus velatus and Adoristes ovatus were slightly less common.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, II/1; 483-493
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of composted sludge and forest ectohumus to enrich soil in two - and three-year cultivation of common beech seedlings
    Autorzy:
    Rolbiecki, S.
    Klimek, A.
    Rolbiecki, R.
    Figas, A.
    Ptach, W.
    Gackowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/101217.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    forest nursery
    common beech
    compost
    mulching
    Acari
    Opis:
    This study examined the effect of fertilisation with compost prepared from hygienised sludge with an addition of pine-tree bark and mulching with fresh forest ectohumus on selected growth parameters in two – and three-year seedlings of common beech and the occurrence of mites (Acari) in soil. The experiment was carried out in 2009-2010 in the Białe Błota forest nursery (Bydgoszcz Forest District) on proper rusty soil. The entire area of the experiment was irrigated with a stationary sprinkler. The beech seedlings on the plots where compost had been used as fertiliser were significantly taller than those growing on the plots where mineral fertilisers had been applied. Mulching increased the height of the seedlings significantly only in the last, third year of the study. The tallest three-year-old seedlings were found on the plots in which both of the tested procedures had been carried out. Neither of the factors under study had a significant effect on the diameter of the root neck in the second year of the nursery cultivation, but they increased it significantly in the third year. Fertilisation with compost with an addition of pine-tree bark increased the number of leaves per plant and the leaf area in two – and three-year-old seedlings. A beneficial and significant effect of mulching on these parameters was found in the third year of cultivation. A significantly positive effect of mulching on the mite gathering density was recorded in the second year of the nursery cultivation. However, both of the experimental factors had a positive effect on the occurrence of those arthropods in the third year of the study. Oribatid mites were the most numerous mite order and they were found in the greatest density on plots where mulching had been applied. Fertilisation and mulching increased the Oribatida/Actinedida ratio, which may indicate an improvement of the biological balance in the soil environment.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2016, IV/1; 1057-1069
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of composted sludge and forest ectohumus to enrich soil in two - and three-year cultivation of scots pine in a forest nursery
    Autorzy:
    Rolbiecki, S.
    Klimek, A.
    Rolbiecki, R.
    Figas, A.
    Ptach, W.
    Gackowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/101590.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    forest nursery
    Scots pine
    ectohumus
    reintroduction of soil fauna
    Acari
    Opis:
    This study examined the effect of fertilisation with compost prepared from hygienised sludge with an addition of pine-tree bark and mulching with fresh forest ectohumus on selected growth parameters for two - and three-year-old Scots pine trees and on the incidence of mites (Acari) in the soil. The experiment was carried out in 2009-2010 in the Białe Błota forest nursery (Bydgoszcz Forest District) on proper rusty soil. The entire area of the experiment was irrigated with a stationary sprinkler. Organic fertilisation with compost prepared from hygienised sludge with an addition of pine-tree bark resulted in a significant increase in the plant height and the diameter of the root neck in two-year-old pine trees. The effect of mulching on these parameters was not significant. The synergistic effect of the factors on the plant height and the diameter of the root neck was not significant. Organic fertilisation significantly increased the height of 3-year-old pine trees, whereas it did not have a significant effect on the root neck diameter. Mulching increased the plant height significantly, but no statistical effect on the diameter of the root neck was demonstrated. Although no significant interaction of either experimental factors in their effect on the plant height and the diameter in the root neck was observed, the parameters tended to increase in the experimental option, which included organic fertilisation and mulching. Mulching had a significant effect on the presence of soil mites, especially oribatid mites (Oribatida). Their density increased greatly after the procedure. This growth, as well as an increase in the ratio of Oribatida to Actinedida could be a sign of improvement of the biological balance of the soils under study and their biological activity.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2016, IV/1; 1117-1128
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using computed tomography images for a heart modeling
    Autorzy:
    Szostek, K.
    Piórkowski, A.
    Kempny, A.
    Banyś, R.
    Gackowski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/333424.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
    Tematy:
    echokardiografia
    przetwarzanie obrazów
    symulacja medyczna
    echocardiography
    image processing
    medical simulation
    Opis:
    In this paper the quality and analysis of the computed tomography scan sets are presented in the context of creating a 3DD model of a heart for the ultrasonography simulator. Data was collected during regular patients examination, using various equipment and technique, therefore not every set has required quality. CT data can be fast characterized with histogram that can show if the brightness ranges of objects (heart structures) are selective. This makes CT data usable for simulation by applying a transform function on the CT images to produce ultrasonographylike images. The aim is to use a PACS system of Hospital, which is the source of data. Therefore a proper technique and system for analysis is needed.
    Źródło:
    Journal of Medical Informatics & Technologies; 2012, 19; 75-84
    1642-6037
    Pojawia się w:
    Journal of Medical Informatics & Technologies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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