Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles: DFG German National Licenses  (26)
  • 1990-1994  (17)
  • 1970-1974  (9)
  • 1
    Electronic Resource
    Electronic Resource
    Measurements of the total cross section differenceΔσ Т innp transmission between 0.86 and 0.94 GeV (1994)
    Springer
    The European physical journal 61 (1994), S. 53-57 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present results of the total cross section differenceΔσ Т obtained in transmission measurements at the energies 0.86, 0.88, 0.91 and 0.94 GeV. The SATURNE II polarized beam of free neutrons obtained from the break-up of polarized deuterons was transmitted through the polarized Saclay frozen-spin proton target. The beam and target polarizations were oriented in the vertical direction. The present results agree with previous SATURNE measurements and improve the amplitude analysis in the forward direction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01641886
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The optical gap of NiO (1992)
    Springer
    The European physical journal 86 (1992), S. 207-215 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The nature of the optical absorption gap in NiO at 4.0 eV is investigated. It is found that this gap is due to a band to band transition, where an electron is taken out of the valence band and placed into the conduction band. The optical gap of 6.0 eV found in Ni∶MgO is of a nature, where an electron is taken out of the oxygen 2p band and placed into the first affinity level of the Ni2+ ion (3d 8L»3d 9L−1). The impurity band created in Ni1−x Li x O by the Li ions is found 2.3 eV below the bottom of the conduction band in agreement with model predictions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01313827
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Die permanente Elektrotherapie des Herzens und ihre verkehrsmedizinische Bedeutung (1970)
    Springer
    International journal of legal medicine 67 (1970), S. 42-56 
    Details
    ISSN: 1437-1596
    Keywords: Fahrtauglichkeit bei Coronarerkrankungen ; Herzschrittmacher ; Plötzlicher Tod ; Schrittmacherimplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Zwei innerhalb eines Jahres sezierte Fälle von plötzlichem Tod bei elektrischer Dauerstimulation des Herzens durch implantierte Schrittmacher gaben zu der Überlegung Anlaß, wie häufig mit Komplikationen und Spättodesfällen bei solchen Patienten gerechnet werden muß, da dies für die Ausübung spezieller Berufe und insbesondere für die aktive Teilnahme am Straßenverkehr von Bedeutung erschien. Eine Zusammenstellung mehrerer Statistiken mit insgesamt 1341 Behandlungsfällen zeigte, daß Reoperationen infolge von Störungen unterschiedlicher Art in einem großen Teil der Fälle notwendig wurden. Spättodesfälle traten 97–105mal auf 691–969 Patienten auf. In nur 2% waren technische Störungen die Ursache. Auf Grund der plötzlichen Spättodesfälle und der häufig außerhalb der Klinik auftretenden Komplikationen, welche durch den Stress des Straßenverkehrs u. U. begünstigt werden, erscheinen elektrisch dauerstimulierte Patienten für bestimmte Berufe mit Verantwortung für Menschenleben und insbesondere für die aktive Teilnahme am Straßenverkehr ungeeignet.
    Notes: Summary Two cases of sudden death of individuals with cardiac pacemakers were autopsied within a one year period. Speculations regarding reintegration of such patients into certain professions and particularly their ability to participate in road traffic gave rise to the current report. A survey of several statistical evaluations comprising 1341 patients with pacemakers indicated the necessity of repeated surgical intervention because of various failures of stimulation in a large number of cases. Delayed deaths occurred 97–105 times in 691–969 patients. In only 2% of these deaths technical failure was the cause. In consideration of the suddenness with which late complications occur and their aggravation by stress associated with road traffic it appears that patients with pacemakers are unsuitable for certain professions involving the lives of others and should not be granted driving permits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00200425
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Beiträge zur forensischen Osteologie (1970)
    Springer
    International journal of legal medicine 67 (1970), S. 170-174 
    Details
    ISSN: 1437-1596
    Keywords: Identifikationsmerkmale ; Osteologie ; Processus mastoideus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung An 105 Individuen, 61 männlichen und 44 weiblichen, wird die Behauptung eines Geschlechtsdimorphismus hinsichtlich der Höhe und Größe der Processus mastoidei statistisch nachgeprüft. Für die mediale und laterale Fortsatzhöhe lassen sich keine signifikanten Mittelwertsdifferenzen aufzeigen. Zudem ist die Varianz der Kollektive so groß, daß der Proc. mastoid. als Identifikationsmerkmal ausscheidet. Die gefundene Mittelwertsdifferenz der Größe der Fortsätze, hier durch die äußere Fläche ausgedrückt, läßt sich statistisch eindeutig sichern. Dies entspräche der Vorstellung einer Kausalbeziehung zwischen Ausbildung und Insertion der seitlichen Halsmuskulatur einerseits und Größe bzw. Volumen der Fortsätze andererseits.
    Notes: Summary The supposition regarding sex-linked differences in height and surface area of the mastoid process was tested in 105 human skulls, 61 of which were male and 44 were female. There was no statistically significant difference noted in the mean values of the lateral and medial measurements of the processes from both sexes. Some significance, however, was noted in the measurement of the surface area. This may be associated with the insertion of stronger lateral neck-musculature, as is isually the case in males.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00200356
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Beiträge zur forensischen Osteologie (1970)
    Springer
    International journal of legal medicine 67 (1970), S. 175-183 
    Details
    ISSN: 1437-1596
    Keywords: Osteologie ; Identifikation ; Pneumatisation Warzenfortsatz ; Altersbestimmung ; Geschlechtsbestimmung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Die Pneumatisation von 91 Warzenfortsätzen erwachsener Menschen wird mittels Röntgendensitometrie in bezug auf Alters-, Geschlechts-, Seiten- und Volumen-abhängigkeit untersucht. Dabei läßt sich nur eine geringe Abhängigkeit (10%) vom Volumen des Proc. mastoid. feststellen. In der Literatur wird ein Zusammenwirken multipler Faktoren bei der Pneumatisation des Warzenfortsatzes angenommen, wobei die Größe des Muskelhöckers von funktionellen, hormonellen und hereditären Faktoren beeinflußt werden soll. Zum Teil wird auch die Meinung vertreten, daß sein mechanisch entlasteter Innenraum je nach der „Kraft der Schleimhaut“ entweder von dieser oder von spongiösem Knochen in der Art einer „Verdrängungsreaktion“ ausgefüllt wird. Als Merkmal zur Individualidentifikation ist die Pneumatisation des Mastoides aufgrund unterschiedlicher, individualspezifischer Ausformung der Cellulae durchaus geeignet; eine Alters- und Geschlechtsidentifikation unbekannter Einzelstücke ist jedoch nicht möglich.
    Notes: Summary X-ray densitometry of 91 adult mastoid processes and their relationships to sex and age as well as to the volume of the processes was carried out. No relationship to age or sex could be determined, however, a small correlation with the volume (10%) was ascertained. The pneumatization of the mastoid process supposedly depends on multiple factors, particularly functional, hormonal and hereditary. Some, however, believe that mucous membrane or spongious bone occupy the inner spaces of the process, depending on a mutual “displacement reaction”. The mastoid process is suitable for individual identification on the basis of the specific structure of its air spaces. Age and sex determination is impossible using unknown single specimens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00200357
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Beiträge zur forensischen Osteologie (1970)
    Springer
    International journal of legal medicine 67 (1970), S. 230-248 
    Details
    ISSN: 1437-1596
    Keywords: Schädelnähte ; Altersbestimmung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfasung An 162 Individuen aller Altersstufen, 100 männlichen und 62 weiblichen, wird die Verknöcherung der drei großen Suturen des Hirnschädels untersucht und mit dem Alter korreliert. Dabei fand sich eine stärkere Altersabhängigkeit der Verknöcherung der inneren Nähte. Während die Verknöcherung der äußeren Nähte dem Alter linear korreliert war, wies die Regressionsfunktion der inneren Nahtverknöcherung Abweichungen von der Linearität auf. Die Verknöcherung der inneren Nähte verläuft schneller und erreicht im Durchschnitt höhere Verknöcherungsgrade. Eine Varianzanalyse zeigt, daß der in früheren Untersuchungen oft behauptete Geschlechtdimorphismus im Ablauf der Nahtverknöcherung nicht besteht, und die gefundenen geringen Differenzen zwischen den Geschlechtern zufällig sind. Bei der Berechnung der Vertrauensintervalle für eine Altersschätzung an den Schädelnähten fand sich bei 95% iger Sicherheit ein Intervall von ±32 Jahren für die äußeren und ± 25 Jahren für die inneren Nähte. Die Altersschätzung anhand der Schädelnähte ist damit sehr ungenau, so daß diese niemals allein zur Altersbestimmung herangezogen werden sollten.
    Notes: Summary Closure of the three sutures of the cranial vault is investigated in 162 individuals of both sexes, 100 males and 62 females, and correlated to age. Age dependence was found stronger for the endocranial sutures. Synostosis of the ectocranial sutures was correlated rectlinear to age, while the regression function for the endocranial sutures showed deviations from rectlinearity. Suture closure proceeds more quickly in endocranial sutures and reaches higher degrees. From an analysis of variance it could be derived, that sex-differences ln suture closure as they were reported in former investigations are due to chance. Sex really does not show any influence on suture closure. Calculation of the confidence intervals for prediction of age from the degree of synostosis of vault sutures assured, that estimation of age from the cranial sutures is very unreliable. The 95% confidence interval was ± 32 years for the ecto- and ± 25 years for the endocranial sutures. Synostosis of the sutures by it's own may therefor never be employed as an estimation of age.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02053747
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Calcium carbonate as a phosphate binder in dialysis patients: Evaluation of an enteric-coated preparation and effect of additional aluminium hydroxide on hyperaluminaemia (1991)
    Springer
    Journal of molecular medicine 69 (1991), S. 59-67 
    Details
    ISSN: 1432-1440
    Keywords: Calcium carbonate ; Phosphate ; Chronic renal failure ; Aluminium ; Hyperparathyroidism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Calcium carbonate has been successfully used as a phosphate binder in patients with chronic renal failure; however, a high frequency of hypercalcaemia has been reported. To study the effects of calcium carbonate preparations with different dissolution characteristics on the incidence of this side effect, we conducted a double-blind, crossover trial in 21 patients undergoing chronic haemodialysis. Aluminium hydroxide therapy was replaced with calcium carbonate. The subjects then randomly received either an enteric-coated or a gastric-coated preparation. Calcium carbonate (3.1–3.6 g/d) controlled serum phosphate concentrations as effectively as aluminium hydroxide (2.9 g/d). Concurrently, there was a significant rise in mean serum calcium and a fall in serum concentrations of both parathyroid hormone and osteocalcin, the latter suggesting a decrease in bone turnover. Overall, hypercalcaemic episodes developed in 9 patients (43%) and occurred at a considerable frequency (33 episodes per 100 patient-months) during treatment with the gastric-coated formulation. Following conversion to enteric-coated calcium carbonate (3.6 g/d) patients had fewer occurrences of hypercalcaemia (12 episodes per 100 patient-months,P〈0.05) and, as compared to the gastric-coated preparation, increases in serum calcium 〉3.00 mmol/l were not observed at all. Hyperaluminaemia was regressive during therapy with calcium carbonate, but addition of small doses of aluminium hydroxide caused a large rise in serum aluminium concentrations after infusion of desferrioxamine, indicating an enhanced rate of absorption or aberrant compartmentalization of aluminium. We conclude that calcium carbonate can control hyperphosphataemia in dialysis patients. However, undesirable hypercalcaemic episodes may occur, the frequency and severity of which can be lowered by the use of an enteric-coated preparation. Concomitant use of aluminium hydroxide and calcium carbonate should be restricted to patients in whom the degree of aluminium accumulation is monitored by serial desferrioxamine tests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01666818
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Vascular dementia in Spatz-Lindenberg's disease (SLD): cortical synaptophysin immunoreactivity as compared with dementia of Alzheimer type and non-demented controls (1993)
    Springer
    Acta neuropathologica 86 (1993), S. 259-264 
    Details
    ISSN: 1432-0533
    Keywords: Thromboangiitis obliterans ; Dementia ; Cortical synaptophysin expression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The generalized form of von Winiwarter-Buerger's disease (WBD) occasionally involves the brain. However, pure cerebral forms of the disease were also described by Spatz and Lindenberg (“Spatz-Lindenberg's disease”, SLD). Both, the type I, which involves the large basal arteries, and the type II, which results in a sickle-shaped granular atrophy of the cerebral cortex, are often accompanied by (“vascular”) dementia, which Lindenberg and Spatz mainly attributed to the bilateral involvement of the second frontal gyrus by granular atrophy. Recently, synaptic deprivation of the cortical gray matter has been shown to occur in the dementia of Alzheimer type (DAT) and other neurodegenerative disorders. In DAT, the synaptic loss highly correlated with the degree of the mental impairment. We wanted to examine whether similar changes also occurred in dementia of vascular origin, for which SLD, although infrequent, is a typical example. In fact, we found that in three cases of typical SLD type II the synaptophysin immunoreactivity of the cortical neuropil in areas without overt infarcts or scar formation was as much reduced as in Alzheimer's disease. Although it must be taken into account that in the present cases the synapse loss might, at least in part, be due to secondary (Wallerian) degeneration as a result of the neuronal loss in the “watershed” regions of the arterial blood supply, it cannot be excluded that a decline of cortical synaptic contacts in areas without necroses or scars may occur as a primary event, contributing to the pathogenesis of the dementia. Final conclusions can only be expected from investigations into further cases of cerebro-vascular disorders with and without dementia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00304140
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Fast gefrorene Strömung eines Gases mit thermodynamischer Relaxation (1972)
    Springer
    Archive of applied mechanics 41 (1972), S. 394-406 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary The one-dimensional flow induced by an arbitrary motion of a piston into a gas with arbitrary internal rate processes is studied. For times, which are smaller than the relaxation times, the flow is described by an asymptotic expansion in the Damköhler-number. The first order quantities are given analytically and discussed in two special cases. The first case is an example for relaxation to favour the formation of a shock wave. In the second case the influence of relaxation on a rapid pulse is investigated.
    Notes: Übersicht Es wird die durch eine beliebige Bewegung eines Kolbens in einem zylindrischen Rohr verursachte Strömung eines Gases untersucht, in dem beliebige Relaxationsprozesse ablaufen können. Die Strömung wird für Zeiten, die klein gegen die Relaxationszeiten sind, durch eine Entwicklung nach der Damköhlerzahl beschrieben. Die Strömungsgrößen 1. Ordnung werden analytisch angegeben und für zwei Spezialfälle diskutiert. Der erste Fall ist ein Beispiel dafür, daß die Relaxation die Entstehung eines Verdichtungsstoßes beschleunigen kann. Im zweiten Fall wird der Einfluß der Relaxation auf ein kurzes Signal untersucht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00533143
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Heat and mass transport in the photoacoustic effect on liquids (1991)
    Springer
    Applied physics 52 (1991), S. 223-233 
    Details
    ISSN: 1432-0630
    Keywords: 44.25 ; 44.60+f ; 47.25.Q
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The temperature oscillation accompanying the photoacoustic effect generates a periodic variation of the vapor pressure of a liquid. The propagation of the oscillating concentration of the vapor in the inert cell gas (air) is described by a mass diffusion wave on which a convective motion of the gas is superposed. The diffusion wave characterized by the diffusion coefficient of the cell gas alone can be measured by the Mirage effect, whereas a microphone detects the total mass flux including the convective flux, which increases with temperature. On approaching the boiling temperature, the convective flow will govern the oscillating transport of mass. The photoacoustic signal is determined directly from the flux of heat and mass at the boundary between liquid and gas using the Gauss' divergence theorem. We have found that the temperature behaviour of the amplitude and phase angle of the photoacoustic signal depends on the length of the gas column in the cell. The contribution of thermal expansion to the photoacoustic signal is considered using the composite piston model. The results of the calculations agree fairly well with the experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324582
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...