GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Digitale Medien
    Digitale Medien
    Sequence and analysis of chromosome 2 of Dictyostelium discoideum (2002)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 418 (2002), S. 79-85 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The genome of the lower eukaryote Dictyostelium discoideum comprises six chromosomes. Here we report the sequence of the largest, chromosome 2, which at 8 megabases (Mb) represents about 25% of the genome. Despite an A + T content of nearly 80%, the chromosome codes for 2,799 ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/nature00847
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Callosal and corticospinal tract function in patients with hydrocephalus: a morphometric and transcranial magnetic stimulation study (1998)
    Springer
    Journal of neurology 245 (1998), S. 280-288 
    Details
    ISSN: 1432-1459
    Schlagwort(e): Key words Corpus callosum ; Corticospinal tract ; Hydrocephalus ; Brain morphometry ; Transcranial magnetic brain stimulation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract In 15 patients with symptomatic hydrocephalus, pressure-induced morphological changes of the brain and the function of callosal and corticospinal fibres were studied. Morphometry of the corpus callosum (CC) was performed on midsagittal MR images. Focal transcranial magnetic stimulation of the motor cortex was used to assess simultaneously excitatory motor responses in contralateral hand muscle (corticospinally mediated effect) and inhibition of tonic EMG activity in ipsilateral hand muscles (transcallosal inhibition (TI) of the contralateral motor cortex). Before a shunt operation, the midsagittal area of the CC was reduced by 34% on average. The height and, to a lesser degree the length, of the CC were increased before the shunt operation. Thresholds and central motor latencies of corticospinally mediated responses were normal, response amplitudes were smaller than in normal subjects. Motor thresholds increased from 38, SD 5 to 52, SD 8% (P〈0.01) within 7 days after ventricular drainage, reflecting the increase in the distance between stimulation coil and brain. The threshold increase paralleled a restoration of normal anatomical conditions within 7 days after shunt operation and the improvement of motor symptoms and might be a predictor of successful decompression. Transcallosal inhibition could be elicited in all patients. The measurements of TI lay within the normal range except the duration, which was prolonged in 73% of 15 patients before shunt operation as a probable indicator of an increased dispersion of callosal conduction. The normalization of the area and shape of the CC after shunt operation and the normal corticospinal and callosal conduction times exclude degeneration, demyelination or functional block of a large proportion of callosal or corticospinal tract fibres or a substantial loss of nerve cells in motor cortex.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004150050219
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Maximum Entropy Density Determination for the Earth and Terrestrial Planets (1999)
    Springer
    Studia geophysica et geodaetica 43 (1999), S. 35-60 
    Details
    ISSN: 1573-1626
    Schlagwort(e): information measures ; non-linear inverse problem ; mass density distribution ; physical geodesy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Architektur, Bauingenieurwesen, Vermessung , Geologie und Paläontologie , Physik
    Notizen: Abstract The maximum entropy principle of the information theory gives rise to a general regularization strategy for ill-posed inverse problems. The methods based on this principle have become standard in various branches of engineering sciences. Of course, ill-posed problems frequently appear in Earth sciences, too. Nonetheless, the concept of maximum entropy is not very popular here. Therefore, we review the basic approaches employing the principle of maximum entropy in one way or another. We can distinguish at least three different approaches, partly yielding coincident results. One possible area of application is the determination of Earth and planetary models, although the paper cannot treat this in its practical complexity. Most of the discussion is restricted to the determination of the Earth's mass density function from various sources of data. Three sample problems are solved using the principle of maximum entropy: a spherical and an ellipsoidal problem related to the Earth and an ellipsoidal problem related to Mars. This illustrates the numerical procedure, which is non-trivial in many cases. It also shows some results, partly compared to standard solutions. The pros and cons of the approaches are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1023357908200
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Oculo-facio-cardio-dental (OFCD) syndrome (1998)
    Springer
    Journal of orofacial orthopedics 59 (1998), S. 178-185 
    Details
    ISSN: 1615-6714
    Schlagwort(e): Cataract ; Microphthalmia ; Atrial septal defect ; Radiculomegaly ; Open apices dentes ; Katarakt ; Mikrophthalmie ; Vorhofseptumdefekt ; Zahnwurzelmegalie ; Offenes Foramen apicale
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Die Kombination von fazialer Dysmorphie, kongenitalen Katarakten, Mikrophthalmie, Herzfehler und Zahnwurzelmegalie ist sehr selten. Wir beschreiben ein Mädchen mit Vorhofseptumdefekt, einseitiger kongenitaler Katarakt, einseitiger Mikrophthalmie, verlängerten Schneide-und Eckzahnwurzeln sowie verzögertem Wurzelbildungsabschluß und weiteren Zahnkronenanomalien. Diese Kombination ist als oculo-facio-cardio-dentales (OFCD) Syndrom seit kurzem bekannt geworden.
    Notizen: Abstract The association of facial dismorphy, congenital cataracts, microphthalmia, heart disease, and dental radiculomegaly is very rare. We describe a girl with atrial septal defect, unilateral congenital cataract, unilateral microphthalmia, radiculomegaly of incisor and canine teeth with open apices and other dental crown anomalies. This combination of symptoms clearly represents a distinct syndrome and has recently been described as oculo-facio-cardio-dental (OFCD) syndrome.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01317179
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...