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  • 1
    Online Resource
    Online Resource
    Kombinom - Datenmodellierung für den Einsatz von autonomen Kleinbussen im ländlichen Raum zum kombinierten Transport von Personen und Gütern : Projektlaufzeit: Oktober 2020 bis September 2021 (2021)
    Frankfurt am Main : [Frankfurt University of Applied Sciences]
    Details Availability
    Keywords: Forschungsbericht ; Autonomes Fahrzeug ; Kleinbus ; Mischverkehr ; Personenverkehr ; Güterverkehr ; Datenmodellierung ; Simulation
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (103 Seiten, 5,13 MB) , Diagramme, Illustrationen
    URL: https://doi.org/10.2314/KXP:183633897X
    DOI: 10.2314/KXP:183633897X
    Language: German
    Note: Förderkennzeichen BMVI 19F1072A , Literaturverzeichnis: Seite 91-94 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Sprache der Kurzfassungen: Deutsch, Englisch
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  • 2
    Online Resource
    Online Resource
    USEfUL: Untersuchungs-, Simulations- und Evaluations-Tool für Urbane Logistik : Schlussbericht zum Teilprojekt "Hochschule Hannover" im Projekt USEfUL : Projektlaufzeit: 1. September 2017 bis 31. Dezember 2020 (40 Monate) (2021)
    Hannover : Hochschule Hannover
    Details Availability
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (55 Seiten, 2,19 MB) , Diagramme, Karte
    URL: https://doi.org/10.2314/KXP:1841259616
    DOI: 10.2314/KXP:1841259616
    Language: German , English
    Note: Förderkennzeichen BMBF 03SF0547D , Verbundnummer 01179997 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Sprache der Kurzfassungen: Deutsch, Englisch
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  • 3
    Electronic Resource
    Electronic Resource
    Dendrite bundles in lamina II/III of the rabbit neocortex (1986)
    Springer
    Anatomy and embryology 173 (1986), S. 343-348 
    Details
    ISSN: 1432-0568
    Keywords: Visual cortex ; Motor cortex ; Dendrite bundles ; Pyramidal cells ; Rabbit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The present investigation systematically analyzes the course and arrngement of dendrites in lamina II/III of the visual and the motor cortex of the rabbit on the basis of Klüver-PAS stained 10 μm paraffin sections, 1 μm plastic-embedded semithin section and ultrathin sections. In both areas the dendritic pattern of lamina II/III is characterized by vertical bundles reminiscent of the pattern in lamina IV/V. The bundles form in the upper half of lamina II/III. They consist mainly of apical dendrites from lamina II/III pyramidal cells and receive branches from dendrite bundles in lamina IV/V, i.e., branches from apical dendrites arising from lamina V pyramidal cells. Besides these features in common, the lamina II/III bundles in the visual cortex on the one hand and in the motor cortex on the other differ with regards to the size and shape of individual bundles as well as to the extent of connections with bundles in lamina IV/V.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318917
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  • 4
    Electronic Resource
    Electronic Resource
    Signs of the principle body axes prior to primitive streak formation in the rabbit embryo (1995)
    Springer
    Anatomy and embryology 192 (1995), S. 159-169 
    Details
    ISSN: 1432-0568
    Keywords: Mammalian embryonic disc ; Epiblast ; Hypoblast ; Differentiation ; Correlative light microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An early common element during anterior-posterior axis formation amongst amniotes is the primitive streak, running longitudinally in the two-layered embryonic disc. In mammals the primordium of this transient structure is the first definite morphological sign of the anterior-posterior axis, while in avian embryos the axis is visible and apparently defined earlier. Here we scrutinize suggestions that in mammals also there are earlier signs of axis formation by using correlative low and high-resolution light microscopy on tissues from rabbit embryos at 6.3 and 6.5 days post-conception, i.e. immediately before and after primitive streak formation. A series of semithin sections were cut from resin-embedded embryonic discs that had been photographed previously at low power. In embryos at 6.5-days post-conception the primitive streak is as long as up to half the diameter of the embryonic disc, extending anteriorly from a thickening, here called the posterior node, at the posterior margin, which contains the first mesoderm cells ingressing from the epiblast. On both sides of the primitive streak there is a triangular area that appears light in surface views of fixed embryos and correlates with stretches of low-columnar simple epithelium in an otherwise high-columnar pseudostratified epiblast. Within the anterior margin, which has a sharper contour than the rest of the circumference of the embryonic disc, there is a narrow, crescent-shaped dark zone caused by increased cellular height and number in both epiblast and hypoblast. These characteristics of the anterior margin are also found at 6.3 days post-conception, at which stage there is no sign of a primitive streak or a posterior node. The posterior margin, in contrast, is ill-defined in these earlier embryos, or there is a light crescent within the posterior margin, which has the same histological characteristics as the bilateral posterior triangular areas of primitive streak stages. Because the anterior differentiation occurs prior to primitive streak formation and is a sign of both the anterior-posterior and the transverse axes of the embryonic disc, and because some of its histological characteristics are found in primate and human embryos, we propose to name this structure the ‘anterior marginal crescent’ and to add it to the list of transient structures that gradually establish the principal body axes in mammals. The anterior manifestation of body axes in mammals is thus essentially different from axis development in the avian embryo, where differentiation of these axes is first manifest at the posterior margin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00186004
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  • 5
    Electronic Resource
    Electronic Resource
    Neurulation in the rabbit embryo (1998)
    Springer
    Anatomy and embryology 197 (1998), S. 167-175 
    Details
    ISSN: 1432-0568
    Keywords: Key words Rabbit embryo ; Neurulation ; Multiple-site closure ; Posterior-neuropore ; Closure rate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Among a broad range of factors and mechanisms involved in the complex process of neurulation a relationship between the curvature of the craniocaudal body axis and rate of neural tube closure has been proposed, but more examples and models are needed to further substantiate the existence of this relationship. This is particularly true for mammals, where marked differences in embryonic body curvature between species exist. The rabbit embryo has virtually no curvature during the main phase of neurulation and is therefore a suitable model, but neurulation is hardly documented in this species. In the present study, therefore, neural tube closure in the rabbit embryo is presented in detail by morphological and morphometrical parameters, as well as from scanning electron microscopic investigations. At the stages of 6–8 somites, the flat neural plate transforms into a V-shaped neural groove, beginning at the rhombo-cervical level. Between the stages of 8 and 9 somites, multiple closure sites occur simultaneously at three levels: at the incipient pros-mesencephalic transition, at the incipient mes-rhombencephalic transition, and at the level of the first pairs of somites. This results in four transient neuropores. The anterior and rhombencephalic neuropores close between the stages of 9–11 somites. The mesencephalic neuropore is very briefly present. The posterior neuropore is the largest and remains longest. Its tapered (cranial) portion closes fast within somite stages 9–10. Subsequently its wide (caudal) portion closes up to a narrow slit, but further closure slows down till full closure is achieved at the 22-somite stage. In comparing rabbit neurulation with that of chick and mouse, the sequence of multiple site closure resembles that of the mouse embryo, but other important aspects of neurulation resemble those of the chick embryo. In contrast to mouse and chick, no time lag between closure at the three closure sites in the rabbit was seen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004290050128
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  • 6
    Electronic Resource
    Electronic Resource
    Intermediate filament protein expression and mesoderm formation in the rabbit embryo (1992)
    Springer
    Development genes and evolution 201 (1992), S. 45-60 
    Details
    ISSN: 1432-041X
    Keywords: Gastrulation ; Cytokeratins ; Vimentin ; Immunofluorescence ; Rabbit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary This study aims to describe the regulation of vimentin and cytokeratin expression during differentiation of primary mesenchymal cells in the 7 day old rabbit embryo; unusual intermediate filament protein expression patterns have already been found in this species at later embryonic stages. Double-labelling indirect immunofluorescence assays with a panel of monoclonal intermediate filament antibodies are performed on frozen sections and compared with aldehyde-fixed plastic-embedded tissues. The histological part of the study, serving as a basis for the topographical orientation in the immunostained frozen sections, emphasises many similarities between the primitive streak embryos of the rabbit and the chick. The immunohistochemical analysis reveals cytokeratin expression to varying degrees in all germ layers. Vimentin expression, always in combination with cytokeratin expression, is found in a few cells of the ectoderm, endoderm and lateral mesoderm, but not in the primary mesenchymal cells of either the primitive node or the primitive streak. The results are discussed in relation to recent experimental findings on differentiation and morphogenetic processes in the primitive streak embryo. While these complex expression patterns make it seem unlikely that intermediate filament protein subtypes are expressed independently of cellular function during development, no indication can be found for a relation between vimentin expression and the morphogenetic changes thought to be important during mesoderm formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00188775
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  • 7
    Electronic Resource
    Electronic Resource
    Keratin and vimentin expression in early organogenesis of the rabbit embryo (1988)
    Springer
    Cell & tissue research 253 (1988), S. 553-562 
    Details
    ISSN: 1432-0878
    Keywords: Vimentin ; Keratin ; Mesenchyme ; Organogenesis ; Embryo ; Rabbit (Oryctolagus cuniculus)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The expression of vimentin and keratins is analysed in the early postimplantation embryo of the rabbit at 11 days post conceptionem (d.p.c.) using a panel of monoclonal antibodies specific for single intermediate filament polypeptides (keratins 7, 8, 18, 19 and vimentin) and a “pan-epithelial” monoclonal keratin antibody. Electrophoretic separation of cytoskeletal preparations obtained from embryonic tissues, in combination with immunoblotting of the resulting polypeptide bands, demonstrates the presence of the rabbit equivalents of human keratins 8, 18, and vimentin in 11-day-old rabbit embryonic tissues. Immunohistochemical staining shows that several embryonic epithelia such as notochord, surface ectoderm, primitive intestinal tube, and mesonephric duct, express keratins, while others (neural tube, dermomyotome) express vimentin, and a third group (coelomic epithelia) can express both. Similarly, of the mesenchymal tissues sclerotomal mesenchyme expresses vimentin, while somatopleuric mesenchyme (abdominal wall) expresses keratins, and splanchnopleuric mesenchyme (dorsal mesentery) expresses both keratins and vimentin. While these results are in accordance with most results of keratin and vimentin expression in embryos of other species, they stand against the common concept of keratin and vimentin specificity in adult vertebrate tissues. Furthermore, keratin and vimentin are not expressed in accordance with germ layer origin of tissues in the mammalian embryo; rather the expression of these proteins seems to be related to cellular function during embryonic development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00219746
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  • 8
    Electronic Resource
    Electronic Resource
    Fine structural characteristics of testicular cord formation in the developing rabbit gonad (1991)
    New York, NY : Wiley-Blackwell
    Journal of Electron Microscopy Technique 19 (1991), S. 133-157 
    Details
    ISSN: 0741-0581
    Keywords: Differentiation ; Indifferent gonad ; Mesonephros ; Sertoli cell ; Vimentin ; Keratin ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Natural Sciences in General
    Notes: This paper presents morphological (light- and electron-microscopical) evidence for the role of the mesonephros in contributing cells to the differentiating indifferent gonad and, after sexual differentiation, to the testis. A continuous process is revealed during which segregation of cells occurs from the developing and regressing mesonephros. Additionally, the complementary role of the coelomic epithelium in gonadal ridge and testis formation is demonstrated. The differentiation of testicular cords, their remodelling from a primary reticulum, and the composition and further change of the cellular content during the period after sexual differentiation is described using a computer-aided three-dimensional reconstruction system. Apart from these morphogenetic events, cytodifferentiation in the somatic cells of the indifferent gonad and of the early differentiated testis is demonstrated using indirect immunof luorescence in combination with monoclonal antibodies to the intermediate filament proteins keratin 8 and 18 and vimentin. The immunohistochemical results show that different forms of cytodifferentiation coexist among the somatic cells present in the indifferent gonad and in the testis early after sexual differentiation.
    Additional Material: 19 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jemt.1060190203
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