ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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
  • 1
    Electronic Resource
    Electronic Resource
    Central glucoprivation: Some physiological effects induced by the intraventricular administration of 2-deoxy-d-glucose (1973)
    Springer
    Cellular and molecular life sciences 29 (1973), S. 874-876 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto Il 2-desossi-d-glucosio somministrato nel ventricolo laterale del cervello del ratto provoca iperglicemia, inibizione della secrezione di insulina, iperfagia ed ipotermia a dosi che sono inefficaci per via sistemica.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01946338
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Self-motion and the perception of stationary objects (2001)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 409 (2001), S. 85-88 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] One of the ways that we perceive shape is through seeing motion. Visual motion may be actively generated (for example, in locomotion), or passively observed. In the study of the perception of three-dimensional structure from motion, the non-moving, passive observer in an environment of moving ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35051081
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    High K+-induced release of somatostatin from the cortical preparation of rat brain (1979)
    Springer
    Cellular and molecular life sciences 35 (1979), S. 351-352 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Release of endogenous somatostatin (SRIF) from the rat cerebral cortical slices incubated in Krebs-bicarbonate buffer was increased from the basal rate of 3.4±0.6% of the total SRIF content in 15 min at [K+]o=5.6 mM, to 13.1±1.6% upon raising the [K+]o to 56.6 mM. The high-K+ evoked SRIF release was absent when Ca++ in the medium was replaced by Mn++. The isolated synaptosomes from rat cerebral cortex contain 13.2±3.1 ng SRIF/mg protein compared to 0.33±0.01 ng/mg protein in the cortical tissue as a whole, suggesting that nerve terminals are the main source of the peptide released upon membrane depolarization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01964347
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Dynamic Vergence Using Log-Polar Images (1997)
    Springer
    International journal of computer vision 24 (1997), S. 79-94 
    Details
    ISSN: 1573-1405
    Keywords: log-polar ; active vision ; vergence ; fusion ; divergence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract Vergence provides robot vision systems with a crucial degree of freedom: it enables fixation of points in visual space at different distances from the observer. Vergence control, therefore, affects the performance of the stereo system as well as the results of motion estimation and tracking and, as such, must satisfy different requirements in order to be able to provide not only a stable fixation, but a stable binocular fusion, and a fast, smooth and accurate reaction to changes in the environment. To obtain this kind of performance the paper focuses specifically on the use of dynamic visual information to drive vergence control. In this context, moreover, the use of a space-variant, anthropomorphic sensor is described and some advantages in relation to vergence control are discussed to demonstrate the relevance of image plane geometry for this particular task. Expansion or contraction patterns and the temporal evolution of the degree of fusion measured in the log-polar domain are the inputs to the vergence control system and determine robust and accurate steering of the two cameras. Real-time experiments are presented to demonstrate the performance of the system covering different key situations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007974208880
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Variability of thoracic impedance cardiograms in man (1981)
    Springer
    Medical & biological engineering & computing 19 (1981), S. 411-415 
    Details
    ISSN: 1741-0444
    Keywords: Cardiac output ; Coheretn averaging ; Thoracic impedance ; Variability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The variability of thoracic impedance cardiogram signals was studied in a normal population with the objective of determining the effect of different respiratory manoeuvres and the optimal criteria for acquisition of this type of physiological signal. The variability of the first derivative of the thoracic impedance signal (dZ/dt) was determined at each 5ms intervals along the signal as the ensemble confidence limits of 3% and 97% around the coherent average. The results obtained indicate that: (a) signal variability is minimum during respiratory apnea (p〈0.05) as compared with apneusis or normal respiration, (b) signal patterns are different during apnea and apneusis, and (c) during normal respiration the cardiac component of the thoracic impedance signal can be extracted from the respiratory noise by coherent average yielding a signal with the same pattern obtained during apnea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02441304
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Estimating normal and pathological dynamic responses in cerebral blood flow velocity to step changes in end-tidal pCO2 (2000)
    Springer
    Medical & biological engineering & computing 38 (2000), S. 535-539 
    Details
    ISSN: 1741-0444
    Keywords: Cerebral Blood Flow ; Transcranial Doppler ; Hypercapnia ; Optimal Filters ; Autoregulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The regulation of cerebral blood flow (CBF) following changes in arterial blood pressure (ABP) and end-tidal pCO2 (EtCO2) are of clinical interest in assessing cerebrovascular reserve capacity. Linear finite-impulse-response modelling is applied to ABP, EtCO2 and CBF velocity (CBFV, from transcranial Doppler measurements), which allows the CBFV response to ideal step changes in EtCO2 to be estimated from clinical data showing more sluggish, and additional random variations. The confounding effects of ABP changes provoked by hypercapnia on the CBFV are also corrected for. Data from 56 patients suffering from stenosis of the carotid arteries (with normal or diminished cerebrovascular reactivity to EtCO2 changes—CVRCO 2 were analysed. The results show the expected significant differences (p〈0.05) between EtCO2 steps up and down, the significant contribution from ABP variation, and also differences in the dynamic responses of patients with reduced CVRCO 2 (p〈0.01 after 10 s). For the latter the CBFV response appears exhausted after about 15s, whereas for normals CBFV continues to increase. While dispersion of individual step responses remains large, the method gives encouraging results for the non-invasive study of compromised haemodynamics in different patient groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02345749
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Surface mapping of thoracic impedance cardiograms (1982)
    Springer
    Medical & biological engineering & computing 20 (1982), S. 274-280 
    Details
    ISSN: 1741-0444
    Keywords: Blood flow ; Cardiac output ; Contractility ; Surface mapping ; Thoracic impedance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A method is desbribed for mapping the electrical impedance cardiac signal on the anterior thoracic surface in man. A sinusoidal current was injected through electrodes placed around the neck and lower abdomen and voltage differences were measured with a single exploratory electrode at 30 well defined position on the thorax and upper abdomen. The expected interbeat variability was minimised by digital processing. Different pattern of dZ/dt, the first derivative of the cardiac impedance change were obtained at different points on the thoracic showing the additional information and discrimination provided by impedance surface mapping. The results of this work suggest that classical impedance cardiography detects mainly blood flow changes in the large upper thoracic vessels of the clavicular region. With the present method it is possible to visualise the effect of changes in heart volume and shape on the local impedance distribution and the spreading of blood flow related impedance changes across the thoracic and upper abdominal surfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442792
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    facet.materialart.
    Unknown
    Central glucoprivation: Some physiological effects induced by the intraventricular administration of 2-deoxy-d-glucose (1973)
    Springer
    Details
    Publication Date: 1973-07-01
    Print ISSN: 0014-4754
    Topics: Biology , Medicine
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    High K+-induced release of somatostatin from the cortical preparation of rat brain (1979)
    Springer
    Details
    Publication Date: 1979-03-01
    Print ISSN: 0014-4754
    Topics: Biology , Medicine
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Opioid peptides modulate luteinizing hormone secretion during sexual maturation (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-03-16
    Description: Subcutaneous injections of naloxone, an opiate antagonist, lead to an increase in serum luteinizing hormone concentrations in female but not in male rats before they reach puberty. In addition, estradiol benzoate specifically blocks the luteinizing hormone response to naloxone in prepubertal female rats, suggesting that the opioid peptides have a physiological role in the endocrine events leading to sexual maturation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blank, M S -- Panerai, A E -- Friesen, H G -- New York, N.Y. -- Science. 1979 Mar 16;203(4385):1129-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/424743" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Endorphins/antagonists & inhibitors/*physiology ; Estradiol/pharmacology ; Female ; Luteinizing Hormone/blood/*secretion ; Male ; Naloxone/antagonists & inhibitors/pharmacology ; Rats ; Secretory Rate/drug effects ; Sexual Maturation/*drug effects
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...