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    Wyświetlanie 1-11 z 11
    Tytuł:
    A morphometric approach to the specific separation of the humeri and femora of Dicraeosaurus from the Late Jurassic of Tendaguru, Tanzania
    Autorzy:
    Schwarz-Wings, D.
    Bohm, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/21016.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Opis:
    The two species of dicraeosaurid dinosaurs Dicraeosaurus, Dicraeosaurus hansemanni, and Dicraeosaurus sattleri, have been distinguished mainly by their differences in size and geological age, as they occur in different members of the Late Jurassic Tendaguru Formation of Tanzania. Linear and geometric morphometric measurements distinguish between the humeri and femora of both species. Linear measurements and Principal Component Analysis of Thin-plate Splines reveal strong differences in size and shape between their humeri and weak differences between their femora, also supported by a Discriminant Factor Analysis. Generally, the humerus and femur of D. hansemanni are slightly longer and more robust than those of D. sattleri. Further, the humerus is shorter in relation to the femur in D. sattleri, related to its more distally positioned deltopectoral crest, resulting in differences in its arc of movement and mechanical power. Thus, a morphological separation between the humeri and femora of D. hansemanni from the Middle Dinosaur Member and D. sattleri from the Upper Dinosaur Member of the Tendaguru Formation can be confirmed. Morphometric comparisons of the humeri and femora of Dicraeosaurus with the single known humerus and femur of Amargasaurus cazaui reveal many shape differences between the two genera, which are especially well marked in the Thin-plate Splines analysis and affect in particular the humerus. These results suggest a closer relationship between D. hansemanni and D. sattleri than between D. sattleri and A. cazaui, and a clear separation between the two genera.
    Źródło:
    Acta Palaeontologica Polonica; 2014, 59, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of ecotoxicological properties of oils in water
    Autorzy:
    Hybská, H.
    Mitterpach, J.
    Samešová, D.
    Schwarz, M.
    Fialová, J.
    Veverková, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/205113.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mineral oil
    vegetable oil
    petroleum substances
    surface water
    ecotoxicological tests
    Opis:
    The paper deals with the influence of oils on surface water pollution. Two mineral oils of petroleum origin, one synthetic oil and one vegetable oil were tested. Properties of the selected oil types were assessed by ecotoxicological tests. The acute toxicity test on Daphnia magna showed that out of the tested oils the most toxic for these aquatic organisms were the petroleum oils. In the phytotoxicity test on Sinapis alba, the toxic effect of mineral oils in comparison with synthetic and vegetable oil was more significant. Oils create oil stains visible under the microscope. It was difficult to differentiate them from Scenedesmus subspicatus. The calculation of growth rate was not relevant and a significant loss of cells was detected. It follows from the summary of the tests results that vegetable oil is the least aggressive for the aquatic environment and there are no significant differences between synthetic and mineral oils.
    Źródło:
    Archives of Environmental Protection; 2018, 44, 4; 31-37
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental enrichment for pigs – practical solutions according to the Commission Recommendation (EU) 2016/336
    Wzbogacanie środowiska dla świń - praktyczne rozwiązania zgodnie z zaleceniem Komisji (UE) 2016/336
    Autorzy:
    Nowicki, J.
    Malopolska, M.
    Pabianczyk, M.
    Godyn, D.
    Schwarz, T.
    Tuz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2493.pdf
    Data publikacji:
    2018
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Źródło:
    Annals of Warsaw University of Life Sciences - SGGW. Animal Science; 2018, 57[4]
    1898-8830
    Pojawia się w:
    Annals of Warsaw University of Life Sciences - SGGW. Animal Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    National, regional and international interoperability of Croatian healthcare information system
    Autorzy:
    Mauher, M.
    Schwarz, D.
    Stevanović, R.
    Varga, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/309533.pdf
    Data publikacji:
    2005
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    health ICT implementation strategy
    healthcare functional requirements
    healthcare standards
    electronic health record
    integrated healthcare
    agent based software technology
    healthcare computer
    communication network healthcare pilot implementation
    Opis:
    Croatian national health ICT implementation strategy is determined by Croatian national health strategy and plan, Croatian ICT development strategy for 21st century, and requirements specifications for the health information system. National health ICT implementation strategy components are accented: purpose of the ICT implementation strategy, information principles, needs and ICT enablement in domains of patients, healthcare professionals, policymakers and managers and public. Telemedicine and telecare positions and implementation steps are described. Based on the determinants, three organizational levels have been established - government, ministerial and project levels. General architecture of Croatian healthcare information system and respective pilot projects and results of pilot implementations as well as national ICT environmental accelerators for health ICT implementations are presented.
    Źródło:
    Journal of Telecommunications and Information Technology; 2005, 4; 5-17
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photoconductivity Study of Sputter-Deposited $Cu_2O$ Films
    Autorzy:
    Bhattacharyya, S.
    Reppin, D.
    Sanguino, P.
    Ayouchi, R.
    Polity, A.
    Schwarz, R.
    Hofmann, D.
    Meyer, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492344.pdf
    Data publikacji:
    2011-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.66.-w
    73.50.-h
    73.61.-r
    Opis:
    Cuprous oxide $(Cu_2O)$ thin films were deposited by radio frequency sputtering technique on fused silica substrates. The X-ray diffraction study of the $Cu_2O$ samples showed reflections from (111) and (200) planes of cubic $Cu_2O$. The samples were then annealed at 1008 K in nitrogen $(N_2)$ atmosphere. Annealed samples indicated strain relaxation. The samples were then characterized optically by measuring the transmittance using an ultraviolet-visible-near infrared photospectrometer. The band gap of the as-deposited samples were found to be ≈ 2.1 eV, whereas the annealed samples had a band gap of ≈ 2.6 eV. The transient photocurrent decay measurements of the annealed films indicated slow non-exponential power law decays in several time windows, indicating multiple trapping of the carriers in the deep defects within the band gap. The steady-state photo and dark current measurement and persistent photocurrent (PPC) was carried out on the annealed samples. In general, the photocurrent was found to be much smaller than the dark current. The steady-state and transient photocurrent measurements were utilized to determine the carrier lifetime-mobility product, 〈μτ 〉 of the samples and to determine the carrier mobility, 〈μ 〉.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 6A; A-011-A-014
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pneumaticity and soft-tissue reconstructions in the neck of diplodocid and dicraeosaurid sauropods
    Autorzy:
    Schwarz, D
    Frey, E.
    Meyer, C.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/22875.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Dicraeosauridae
    pneumaticity
    cervical ligament
    morphology
    dicraeosaurid sauropod
    diplodocid sauropod
    sauropod
    Diplodocidae
    body length
    muscle
    ontogenesis
    tomography
    soft tissue reconstruction
    cervical musculature
    vertebral pneumaticity
    paleontology
    functional morphology
    Opis:
    The axial soft−tissue system in the neck of Dicraeosauridae and Diplodocidae, including pneumatic diverticula, ligaments, and muscles, is reconstructed on the basis of phylogenetic and functional morphological comparisons with extant crocodylians and birds and compared with other soft−tissue reconstructions for sauropods. Bifurcation of the neural spines separated the paired supraspinal ligament into two sheets. A paired interspinal septum was attached to the cranial and caudal margins of the neural spines. The dorsal and the lateral portions of the cervical musculature must have been strongly segmented, whereas the laterocostal portion was divided with one myoseptum per vertebral segment. The hypaxial cervical muscle was most probably small and only poorly segmented. In Diplodocidae and Dicraeosauridae, the distribution of external pneumatic structures is similar, whereas only Diplodocidae possess intraosseous pneumatic structures. Supravertebral pneumatic diverticula are reconstructed for both groups, which, together with dorsal ligaments filled the gap between the metapophyses of bifurcate neural spines. Comparisons between the vertebrae of juvenile and adult diplodocids strongly indicate that pneumatisation proceeded from the supramedullary diverticula into the neural arch and the neural spine. The regular branching pattern of the pneumatic cavities as well as the vertical I−beam construction of the vertebral corpora is interpreted as a consequence of the biomechanical constraints of the vertebral corpora in diplodocids. These reconstructions form the ground for functional morphological considerations in Diplodocidae and Dicraeosauridae while addressing the possible mechanical consequences of pneumatic structures for the integrity of the support system of the neck.
    Źródło:
    Acta Palaeontologica Polonica; 2007, 52, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Properties of Yarns of Different Colours Sized by Standard and Pre-wetting Process
    Właściwości przędz różnokolorowych preparowanych standardowo i ze wstępnym nawilżaniem
    Autorzy:
    Gudlin Schwarz, I.
    Kovačević, S.
    Katović, D.
    Dimitrovski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/234131.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    sizing processes
    dyed yarn
    coloured yarn
    cotton yarn
    yarn properties
    preparowanie przędz różnokolorowych
    barwienie przędzy
    właściwości przędz kolorowych
    przędze bawełniane
    Opis:
    This paper presents an investigation consisting of several stages of sample treatment and testing. The first stage was dyeing cotton yarns (with nominal counts of 20 tex and 30 tex) using reactive dyes to obtain yarns in six different colours. Differences in physical and mechanical properties between yarns of different colours were then investigated. In the second treatment stage all samples were sized using two processes: the standard sizing process and pre-wetting sizing process, with two different size concentrations, with the aim to investigate the influence of the sizing process on multi-coloured warp. Also the influence of dyeing on size bonding to the yarn were investigated, as well as on physical-mechanical properties of sized yarns, which are of paramount importance for the further process of making a woven fabric.
    Praca przedstawia badania składające się z kilku stadiów obróbki przędz. Pierwszym stadium było barwienie przędz bawełnianych z zastosowaniem barwników reaktywnych w celu otrzymania przędz w sześciu różnych kolorach. Następnie zbadano różnice w właściwościach fizycznych i mechanicznych przędz o różnych kolorach. W celu określenia wpływu procesu na właściwości kolorystyczne osnowy, w drugim etapie wszystkie próbki zostały poddane preparacji przy zastosowaniu dwóch procesów: standardowego i ze wstępnym nawilżaniem, i dwóch różnych stężeń preparacji. Zbadano również wpływ barwienia na związanie preparacji z przędzą. Badano właściwości fizyczne, w tym mechaniczne, przędz z preparacją, które maja istotne znaczenie dla produkowanych z nich tkanin.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2013, 5 (101); 66-72
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research history, taphonomy, and age structure of a mass accumulation of the ornithopod dinosaur Dysalotosaurus lettowvorbecki from the Upper Jurassic of Tanzania
    Autorzy:
    Hubner, T.R.
    Foth, C.
    Heinrich, W.-D.
    Schwarz, D.
    Bussert, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082333.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Crocodylomorpha
    Thalattosuchia
    Metriorhynchidae
    Lower Cretaceous
    Valanginian
    Czech Republic
    Opis:
    Metriorhynchid crocodylomorphs were an important component in shallow marine ecosystems during the Middle Jurassic to Early Cretaceous in the European archipelago. While metriorhynchids are well known from western European countries, their central and eastern European record is poor and usually limited to isolated or fragmentary specimens which often hinders a precise taxonomic assignment. However, isolated elements such as tooth crowns, have been found to provide informative taxonomic identifications. Here we describe two isolated metriorhynchid tooth crowns from the upper Valanginian (Lower Cretaceous) of the Štramberk area, Czech Republic. Our assessment of the specimens, including multivariate analysis of dental measurements and surface enamel structures, indicates that the crowns belong to two distinct geosaurin taxa (Plesiosuchina? indet. and Torvoneustes? sp.) with different feeding adaptations. The specimens represent the first evidence of Metriorhynchidae from the Czech Republic and some of the youngest metriorhynchid specimens worldwide.
    Źródło:
    Acta Palaeontologica Polonica; 2021, 66, 2; 357-367
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural diversity and production of alder stands on former agricultural land at high altitudes
    Autorzy:
    Vacek, Z.
    Vacek, S.
    Podrazsky, V.
    Kral, J.
    Bulusek, D.
    Putalova, T.
    Balas, M.
    Kalouskova, I.
    Schwarz, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/41581.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    structural diversity
    stand structure
    alder stand
    agricultural land
    black alder
    Alnus glutinosa
    grey alder
    Alnus incana
    afforestation
    succession
    Sudetes Mountains
    Opis:
    The paper deals with the structural diversity and production of a less frequently studied type of alder stands originated on former agricultural lands in the 1950s, established partly by plantation and partly by natural succession in the area of the Krkonoše Mts. and the Orlické hory Mts. (Czech Republic). Four permanent research plots (PRP) were established at sites where Black alder (Alnus glutinosa L. Gaertn.) and Grey alder (Alnus incana L. Moench.) naturally occurs, each plot of 0.25 ha in size. The aim of the study was to evaluate the structure and development of the alder stands with respect to biodiversity, horizontal, vertical and species structure, diameter increment with emphasis on climate factors, and the quantity and quality of timber production. The results document low diversification of the studied stands in the PRPs. The horizontal structure is defined as random and clumped at sites at the highest altitude with high water table. The number of living trees with DBH ≥ 4 cm ranges between 556 to 828 trees ha-1 with the relative stand density index (SDI) 0.67–0.77. The stand volume ranges from 247 to 393 m3 ha–1, and decreases with higher altitudes. Low temperatures is limiting factor for radial growth in the high mountain areas, respectively low precipitation in the middle lands. Owing to a rather specific site character, as especially the spring area, the stands exhibit only average production, but the production quality is generally high. The quality timber is suitable for industrial use; the rot-affected trunk base parts usable for fuel represent only approximately 16%.
    Źródło:
    Dendrobiology; 2016, 75
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two models for absorption by coloured dissolved organic matter (CDOM)
    Autorzy:
    Schwarz, J.N.
    Kowalczuk, P.
    Kaczmarek, S.
    Cota, G.F.
    Mitchell, B.G.
    Kahru, M.
    Chavez, F.P.
    Cunningham, A.
    McKee, D.
    Gege, P.
    Kishino, M.
    Phinney, D.A.
    Raine, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/47774.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    ocean colour
    coloured dissolved organic matter
    surface water
    coastal water
    spectrophotometric measurement
    ultraviolet absorption
    absorption
    Vistula River
    Opis:
    The standard exponential model for CDOM absorption has been applied to data from diverse waters. Absorption at 440 nm (ag440) ranged between close to zero and 10 m−1, and the slope oft he semilogarithmic absorption spectrum over a minimum range of400 to 440 nm (s440) ranged between <0.01 and 0.04 nm−1. No relationship was found between ag440 or s440 and salinity. Except in the southern Baltic, s440 was found to have a broad distribution (0.0165 ± 0.0035), suggesting that it should be introduced as an additional variable in bio-optical models when ag440 is large. An alternative model for CDOM absorption was applied to available high quality UV-visible absorption spectra from the WisGla river (Poland). This model assumes that the CDOM absorption spectrum comprises distinct Gaussian absorption bands in the UV, similar to those ofb enzene. Five bands were fit to the data. The mean central energy ofal l bands was higher in early summer (E ∼7.2, 6.6, 6.4, 6.2 and 5.5 eV or 172, 188, 194, 200 and 226 nm) than in winter. The higher energy bands were found to decay in both height and width with increasing salinity, while lower energy bands broadened with increasing salinity. s440 was found to be correlated with shape parameters of the bands centred at 6.4 and 5.5 eV. While the exponential model is convenient for optical modelling and remote sensing applications, these results suggest that the Gaussian model offers a deeper understanding ofc hemical interactions affecting CDOM molecular structure.
    Źródło:
    Oceanologia; 2002, 44, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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