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    Wyświetlanie 1-8 z 8
    Tytuł:
    First post-Mesozoic record of Crocodyliformes from Chile
    Autorzy:
    Walsh, S A
    Suarez, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/21357.pdf
    Data publikacji:
    2005
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Mesozoic
    Neogene
    Crocodyliformes
    extinction
    Bahia Inglesa Formation
    crocodile
    Chile
    paleontology
    climate change
    Opis:
    Fossil crocodilians are well known from vertebrate bearing localities in South America, but the last record of the group in Chile is from the Cretaceous. No living crocodilians occur in Chile today, and the timing of their disappearance from the country is unknown. We provide the first post−Mesozoic report of crocodilian remains from late Miocene marine deposits of the Bahía Inglesa Formation, northern Chile. The fragmentary material provides proof that Crocodiliformes were present in Chile until at least seven million years ago. We suggest that late Neogene climatic cooling and changes in South American palaeophysiography caused the extinction of the group in Chile.
    Źródło:
    Acta Palaeontologica Polonica; 2005, 50, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isolation and characterisation of crocodile and python ovotransferrins
    Autorzy:
    Ciuraszkiewicz, Justyna
    Olczak, Mariusz
    Wątorek, Wiesław
    Powiązania:
    https://bibliotekanauki.pl/articles/1041133.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    python
    Crocodylus rhombifer
    crocodile
    Crocodylus niloticus
    iron release
    Python molarus bivittatus
    ovotransferrin
    N-glycans
    Opis:
    Transferrins play a major role in iron homeostasis and metabolism. In vertebrates, these proteins are synthesised in the liver and dispersed within the organism by the bloodstream. In oviparous vertebrates additional expression is observed in the oviduct and the synthesised protein is deposited in egg white as ovotransferrin. Most research on ovotransferrin has been performed on the chicken protein. There is a limited amount of information on other bird transferrins, and until our previous paper on red-eared turtle protein there was no data on the isolation, sequencing and biochemical properties of reptilian ovotransferrins. Recently our laboratory deposited ten new sequences of reptilian transferrins in the EMBL database. A comparative analysis of these sequences indicates a possibility of different mechanisms of iron release among crocodile and snake transferrin. In the present paper we follow with the purification and analysis of the basic biochemical properties of two crocodile (Crocodilus niloticus, C. rhombifer) and one snake (Python molurus bivittatus) ovotransferrins. The proteins were purified by anion exchange and hydrophobic chromatography, and their N-terminal amino-acid sequences, molecular mass and isoelectric points were determined. All three proteins are glycosylated and their N-glycan chromatographic profiles show the largest contribution of neutral oligosaccharides in crocodile and disialylated glycans in python ovotransferrin. The absorption spectra of iron-saturated transferrins were analysed. Iron release from these proteins is pH-dependent, showing a biphasic character in crocodile ovotransferrins and a monophasic type in the python protein. The reason for the different types of iron release is discussed.
    Źródło:
    Acta Biochimica Polonica; 2007, 54, 1; 175-182
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    In quest of the Pteraichnus trackmaker: Comparisons to modern crocodilians
    Autorzy:
    Kubo, T
    Powiązania:
    https://bibliotekanauki.pl/articles/21599.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Paleosuchus trigonatus
    paleontology
    crocodile
    modern crocodile
    kinematics
    trackway
    Tomistoma schlegelii
    Crocodylus porosus
    gait
    Crocodilia zob.Crocodylia
    Crocodylia
    Pteraichnus
    posture
    Opis:
    The Pteraichnustrackmaker is usually hypothesized to be either a pterosaur or a crocodilian. Though the latter interpretation is recently not widely accepted, more experimental work on trackways of extant crocodilians is necessary to settle the debate. Here, the trackways of three species of modern crocodiles (Paleosuchus trigonatus, Crocodylus porosus, and Tomistoma schlegelii) in all major gaits and postures, namely sprawling, walking and running, were compared with Pteraichnus trackways. In all experimentally generated crocodilian trackways pentadactyl manus tracks are recognized, the external width between pes tracks is wider than the corresponding internal width between manus tracks, and tail marks are usually present. All crocodilian trackways collected in the present study revealed significant differences from Pteraichnus, which strongly suggests a non−crocodilian origin of Pteraichnus.
    Źródło:
    Acta Palaeontologica Polonica; 2008, 53, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Крокодил Ф. М. Достоевского как петербургская повесть (заметки к словарю аллегорий петербургской истории)
    The Crocodile by Fyodor Mikhaylovich Dostoyevsky as a St. Petersburg story (remarks on the glossary of allegories in the genre of St. Petersburg story)
    Autorzy:
    Крыстева, Денка
    Powiązania:
    https://bibliotekanauki.pl/articles/22608674.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    The Crocodile
    Fyodor Mikhaylovich Dostoyevsky
    St. Petersburg’s story
    allegory
    Leviathan
    Opis:
    The article discusses Dostoyevsky’s story The Crocodile as an episode in the development of the so-called “St. Petersburg story”, established by Pushkin and Gogol as a specific ideological and fictional genre, connected with the symbolic representation of the St. Petersburg period in Russian history. In the analysis of the title and the exposition of the story, the monster is seen as an allegory of the disquieted political body in Russia following the reforms of 1861. Among the sources of the allegory are the Biblical synonymous use of “Leviathan – Crocodile”, Thomas Hobbes’ s treatise Leviathan, and the Russian Old Believers’ invectives about The Ruler and The Crocodile-State. The analysis suggests that Dostoyevsky translates the political notion of Leviathan as a metaphor of the absolutist social negotiation through the equivalent of the Crocodile, already familiar in Russian collective mentality. In this respect, it is assumed that the story serves as a warning about the dangers resulting from the disquieted political body.
    Źródło:
    Acta Universitatis Lodziensis. Folia Litteraria Rossica; 2010, 3; 60-68
    1427-9681
    2353-4834
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Litteraria Rossica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of meat quality of selected exotic animals species
    Porównanie jakości mięsa wybranych gatunków zwierząt egzotycznych
    Autorzy:
    Balowski, M.
    Sobczak, M.
    Zochowska-Kujawska, J.
    Pytel-Zajac, O.
    Niedzwiedz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/82981.pdf
    Data publikacji:
    2015
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    comparison
    meat quality
    exotic animal
    animal species
    crocodile
    kangaroo
    muscle structure
    sensory assessment
    texture parameter
    Źródło:
    Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica; 2015, 36
    2081-1284
    Pojawia się w:
    Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dwarfism and feeding behaviours in Oligo-Miocene crocodiles from Riversleigh, northwestern Queensland, Australia
    Autorzy:
    Stein, M.
    Archer, M.
    Hand, S.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/22617.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    dwarfism
    feeding behaviour
    Oligocene
    Miocene
    crocodile
    Crocodylia
    Mekosuchinae
    Queensland
    Australia
    Opis:
    Instances of dwarfism in the fossil record are of interest to palaeontologists because they often provide insight into aspects of palaeoecology. Fossil species of Australian-Pacific mekosuchine genus Mekosuchus have been described as dwarf, primarily terrestrial crocodiles, in contrast with the nearly ubiquitous semi-aquatic habitus of extant crocodilians (Willis 1997). This hypothesis has been difficult to test because of limited knowledge of the cranial and postcranial skeleton of extinct taxa and the continuous nature of crocodilian growth. New crocodilian vertebral material from Riversleigh, northwestern Queensland, tentatively referred to Mekosuchus whitehunterensis, displays morphological maturity indicative of adult snout-vent length little over a half-meter, proportionally smaller than extant dwarf taxa. Further, this material displays morphology that indicates a relatively large epaxial neck musculature for its body-size. These attributes suggest this dwarf mekosuchine employed unusual feeding behaviours. The ability to perform normal death-roll, de-fleshing behaviours would be limited in a mekosuchine of such small size. Given the powerful neck muscles and other anatomical features, it is more likely that this mekosuchine killed and/or dismembered its prey using a relatively forceful lifting and shaking of the head.
    Źródło:
    Acta Palaeontologica Polonica; 2016, 61, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Animals in The Kojiki
    古事記における動物
    Autorzy:
    Matsui, Yoshikazu
    Powiązania:
    https://bibliotekanauki.pl/articles/1597288.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Stowarzyszenie Badań Japonistycznych
    Tematy:
    animals
    the kojiki
    kanji (chinese characters)
    wani (a crocodile or a_dragon)
    homogeneity of all things
    動物達
    古事記
    漢字
    ワニ
    全てのものの同種性
    Opis:
    The Kojiki, compiled in A. D. 712, is the oldest book in Japan that we can read today. Since it is a record of ancient matters that contains many names of animals, you might expect that it will be useful for investigating the fauna of the early Japanese archipelago. But that investigation might not be effective enough for such a study because The Kojiki mentions only a few of the most popular animals among Japanese people throughout history. I mean that The Kojiki does not refer to all the animals living in Japan. _is might be the reason why the topic of the animals in The Kojiki has hardly been discussed. We can, however, understand the early Japanese point of view on the environment by analyzing the animals in The Kojiki. It is said that the characteristics of the Japanese view on nature are the intimacy with nature and the concept of homogeneousness between humankind and all things in the universe. And these characteristics can be found when we study the way in which The Kojiki mentions animals.
    西暦712年に成った神話物語『古事記』に動物を意味する言葉が出てくる。それらの用法は次の三つに分類できるだろう。1.言葉が示す動物が活躍する、2.活躍も行動もない、3.神や人や場所の名前や歌の中で使われて、動物自身とは関係ない。大半が2と3のカテゴリーの言葉である。とくに『古事記』の112の詩歌には、様々な動物の名が出てくるが、ほとんどが鳥の名前で、比喩的に使われているだけである。 『古事記』の中で広く親しまれている「因幡白兎」の物語に「ワニ」が登場する。また、初代天皇の祖母はワニとされている。鰐（わに）は日本の自然界には生息しない。前者はサメで、後者は720年に編纂された日本の正史『日本書紀』には「龍」と書かれて、蛇だとも言われている。古代日本人はあらゆる現象はもちろん動物と人間とは同じ世界に生きていると考えていたのだろう。故Tubielewicz教授は「殺した動物の記念碑や墓をつくって謝罪しようと努めていた。愛玩された動物は死後に崇拝されることもあった」と指摘している。 『古事記』は日本文化の基層を知るために必須の資料だが、その後の日本で、民話の主人公として親しまれている何種類かの動物は登場していないので、日本の動物相を示す資料ではないだろうが、日本人が自然界に親和性を感じてきた例を見ることはできると言えよう。
    Źródło:
    Analecta Nipponica; 2018, 8; 35-43
    2084-2147
    Pojawia się w:
    Analecta Nipponica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bionic shape design of electric locomotive and aerodynamic drag reduction
    Autorzy:
    Wu, Z.
    Huo, Y.
    Ding, W.
    Xie, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/224333.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electric locomotive
    bionic shape design
    aerodynamic drag
    numerical simulation
    crocodile bionic electric locomotive
    lokomotywa elektryczna
    bioniczny design
    opór aerodynamiczny
    symulacja numeryczna
    Opis:
    Bionics has been widely used in many fields. Previous studies on the application of bionics in locomotives and vehicles mainly focused on shape optimisation of high-speed trains, but the research on bionic shape design in the electric locomotive field is rare. This study investigated a design method for streamlined electric locomotives according to the principles of bionics. The crocodiles were chosen as the bionic object because of their powerful and streamlined head shape. Firstly, geometric characteristic lines were extracted from the head of a crocodile by analysing the head features. Secondly, according to the actual size requirements of the electric locomotive head, a free-hand sketch of the bionic electric locomotive head was completed by adjusting the position and scale of the geometric characteristic lines. Finally, the non-uniform rational B-splines method was used to establish a 3D digital model of the crocodile bionic electric locomotive, and the main and auxiliary control lines were created. To verify the drag reduction effect of the crocodile bionic electric locomotive, numerical simulations of aerodynamic drag were performed for the crocodile bionic and bluff body electric locomotives at different speeds in open air by using the CFD software, ANSYS FLUENT16.0. The geometric models of crocodile bionic and bluff body electric locomotives were both marshalled with three cars, namely, locomotive + middle car + locomotive, and the size of the two geometric models was uniform. Dimensions and grids of the flow field were defined. And then, according to the principle of motion relativity, boundary conditions of flow field were defined. The results indicated that the crocodile bionic electric locomotive demonstrated a good aerodynamic performance. At the six sampling speeds in the range of 40–240 km/h, the aerodynamic drag coefficient of the crocodile bionic electric locomotive decreased by 7.7% on the average compared with that of the bluff body electric locomotive.
    Źródło:
    Archives of Transport; 2018, 48, 4; 99-109
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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