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  • 1
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    German Medical Science GMS Publishing House; Düsseldorf
    In:  66. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC); 20150607-20150610; Karlsruhe; DOCMO.02.04 /20150602/
    Publication Date: 2015-06-03
    Keywords: non-aneurysmal ; subarachnoid hemorrhage ; prediction ; ddc: 610
    Language: English
    Type: conferenceObject
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  • 2
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    German Medical Science GMS Publishing House; Düsseldorf
    In:  68. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 7. Joint Meeting mit der Society of British Neurological Surgeons (SBNS); 20170514-20170517; Magdeburg; DOCMi.01.08 /20170609/
    Publication Date: 2017-06-09
    Keywords: ddc: 610
    Language: English
    Type: conferenceObject
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  • 3
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    German Medical Science GMS Publishing House; Düsseldorf
    In:  67. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 1. Joint Meeting mit der Koreanischen Gesellschaft für Neurochirurgie (KNS); 20160612-20160615; Frankfurt am Main; DOCMI.11.02 /20160608/
    Publication Date: 2016-06-17
    Keywords: early vasospasm ; subarachnoid hemorrhage ; delayed cerebral ischemia ; ddc: 610
    Language: English
    Type: conferenceObject
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  • 4
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    German Medical Science GMS Publishing House; Düsseldorf
    In:  66. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC); 20150607-20150610; Karlsruhe; DOCMI.14.03 /20150602/
    Publication Date: 2015-06-03
    Keywords: subarachnoid hemorrhage ; cerebral infarction ; prediction ; ddc: 610
    Language: English
    Type: conferenceObject
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  • 5
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    German Medical Science GMS Publishing House; Düsseldorf
    In:  67. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 1. Joint Meeting mit der Koreanischen Gesellschaft für Neurochirurgie (KNS); 20160612-20160615; Frankfurt am Main; DOCMO.09.08 /20160608/
    Publication Date: 2016-06-17
    Keywords: Intraventricular hemorrhage ; subarachnoid hemorrhage ; predictors ; ddc: 610
    Language: English
    Type: conferenceObject
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  • 6
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Ultrastructural data are presented on the histological organization of coelomic lining in the podia of ten species of the five major groups of extant echinoderms. Further evidence of the incorporation of podial retractor muscle cells (myocytes) into a monociliated myoepithelial coelomic lining is provided. In the podia of the crinoid Nemaster rubinginosa and the ophiuroid Ophiophragmus wurdemani as well as in the feeding tentacles of the holothurian Leptosynapta tenuis, coelomic linings are organized as simple myoepithelia consisting of non-contractile peritoneal cells (peritoneocytes) and myocytes. Coelomic linings in the holothurian Thyonella gemmata, the echinoids Eucidaris cf. tribuloides and Lytechinus variegatus, and the asteroids Asterias forbesi and Astropecten sp. are pseudostratified or bipartite pseudostratified myoepithelia consisting of subapical myocytes and apically situated peritoneocytes. The ophiuroid podia of Ophioderma brevispinum and Ophiothrix angulata exhibit transitions from simple myoepithelia to partially pseudostratified epithelia. Intermediate forms between the extremes in myoepithelial organization also occur in the podial lining of single species (e.g. Eucidaris cf. tribuloides). These data supplement recent ultrastructural studies on the podial lining of echinoderms and, in conjunction with published ultrastructural data on the myoepithelial organization of other coelomic linings in echinoderms and in other coelomates, suggest myoepithelial organization of the coelomic lining is a plesiomorph feature in Bilateria.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Zoomorphology 91 (1978), S. 1-18 
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Der Aufbau der Kutikula der 4 untersuchten Species aus der Familie Hesionidae(Microphthalmus cf.listensis, M. cf.similis, Hesionides arenaria, juv.Podarke spec.) entspricht grundsätzlich den Verhältnissen bei allen Anneliden: äußere elektronendichte Schicht, Epikutikula, basale Kutikula mit Faserschicht und zahlreiche Mikrovilli, die diese Schichten durchbrechen und von einem mehr oder weniger dichten Glykokalyx bedeckt sind. Ein derbes Kollagengitter ist jedoch nicht ausgebildet; die Fibrillen der Faserschicht sind wesentlich feiner und unregelmäßiger angeordnet. Dies entspricht Strukturen, wie sie bei Archianneliden und bei Polychaetenlarven gefunden werden. Wir deuten sie hier als Reduktionen der typischen Poly chaetenkutikula und vermuten eine Beziehung zur geringen Körpergröße der untersuchten Arten. Rein funktionell lassen sich auch die quantitativen Unterschiede in den verschiedenen Bereichen der Körperoberfläche deuten, die besonders im Vergleich von Prostomium und Rumpf zum Ausdruck kommen. Die Pharynxkutikula zeigt starke strukturelle Abweichungen durch die Ausbildung einer zusätzlichen peripheren Lamellenschicht (in diesem Ausmaß nur von den Gastrotrichen bekannt) und abweichend geformter, besonders langer Mikrovilli. Dieses Merkmal wird als mögliche Synapomorphie für die Familie Hesionidae diskutiert.
    Notes: Summary The structure of the cuticle in the four species of the family Hesionidae(Microphthalmus cf.listensis, M. cf.similis, Hesionides arenaria, juv.Podarke spec.) investigated basically corresponds to that found in all annelids. It consists of an outer, electron dense layer, epicuticle, basal cuticle with a fibrous layer, and numerous microvilli which penetrate the layers and are covered by a more or less dense glycocalyx. However, a rough collagen grid is not developed, the fibers are much thinner and are arranged in a more irregular manner. This corresponds to structures found in archiannelids and polychaete larvae. We consider them here to be reductions of the typical polychaete cuticle and postulate a correlation to the small body size of the species investigated. The quantitative differences in cuticle dimensions in the various body regions and structures can also be explained on a purely functional basis, especially apparent in the comparison of prostomium and body trunk. The pharynx cuticle shows significant structural differences due to the development of an additional peripherical lamellar layer-known to this extent only in gastrotrichs—as well as differently shaped and unusually long microvilli. This character is discussed as a possible synapomorphy for the family Hesionidae.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The structure of the male reproductive systems of two species ofHaplognathia cf.lyra andH. cf.rosacea was described. The structure of the testes and the anterior portions of the sperm ducts in both species was found to be similar. However, considerable species differences were found between the structures of the glands and muscles associated with the reproductive systems. These were more elaborate inH. cf.lyra than inH. cf.rosacea. The former species possessed an H-shaped sperm duct gland, three distinct groups of penis muscles and a penis with two cell types and with a lumen. The latter species had paired sperm duct glands, no specialized penis muscles and a penis with only one cell type and without a detectable lumen. No open gonopore was observed in either species. The sperm presumably exit through a ventral tissue connection observed connecting the penis and the ventral epidermis. These findings were discussed in the light of Mainitz's (1977) theory concerning the primitive penis type within the Gnathostomulida.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Zoomorphology 96 (1980), S. 215-229 
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The fine structure of the gastrotrich eggshell in the hermaphroditic species Turbanella ocellata (Hummon 1974) and the parthenogenetic species Aspidiophorus sp. is described using transmission electron microscopy. The presented evidence strongly suggests that the shell is produced by the egg itself prior to oviposition in both species. The layed egg in Aspidiophorus sp. is provided with a special attachment stalk that is also preformed in the mother animal. Freshly layed eggs of T. ocellata are adhesive all around their surface and lack any specialized structures for attachment. Formation of the spiny eggshell of Aspidiophorus sp. appears to begin with a sudden release of special vesicles containing the preformed spines of the outer eggshell covering. Additional material appears to be secreted by the egg in a more gradual process after the initial vesicle release. The formation of the two fibrous layers in the eggshell of T. ocellata is less well understood and deposition of eggshell material could be seen either as a continuous process or as two separate steps, similar to the events observed for Aspidiophorus sp. For T. ocellata, Tetranchyroderma sp. and Aspidiophorus sp. it is demonstrated that formation of the cuticle occurs as an independent process from that of eggshell formation. This is significantly different from the basic mode of cuticle formation in the annelid line of evolution. The paper argues further that the data support earlier claims of a pronounced difference between the Gastrotricha-Macrodasyida and the Gastrotricha-Paucitubulatina and agree well with the postulated ties of the Gastrotricha and Nematoda. The phylogenetic importance of the eggshell fine-structure is discussed in the framework of present theories on aschelminth phylogeny.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Zoomorphology 95 (1980), S. 17-26 
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The lateral and posterior adhesive organs of an undescribed species ofNeodasys can be seen by electron microscopy to have only one gland cell type. This gland has dense spherical secretion granules like secretion granules of the viscid glands of other gastrotrichs, and it extends to the exterior through a tubular extension of the animal's cuticle, the adhesive tubule, as in other gastrotrichs. Each adhesive gland ofNeodasys has a prominent striated rootlet that extends through its full length, attaching at its distal end to a basal-body-like structure at the tip of the gland's neck. Unlike other gastrotrichs,Neodasys has no second gland type that would be equivalent to a releasing gland. The lateral adhesive organs have a sensory cell closely associated with the gland cell but not in direct communication with the lumen of the tubule; it bears a single cilium that projects alongside the adhesive tubule. The posterior adhesive organ has adhesive gland cells whose necks reach to adhesive tubules on toe-like extensions of the animal's body; sensory cells here are not in a one-to-one association with the tubules; a secretory myoepithelial cell extends to the tip of each toe. The adhesive organs ofNeodasys are interpreted as being of a form that would have been found in a common ancestor to the gastrotrichs and from which the duo-gland organs of other gastrotrichs might have been derived.
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