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
  • 1
    Electronic Resource
    Electronic Resource
    INTERPRETATION OF RESISTIVITY MEASUREMENTS OVER 2D STRUCTURES (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 36 (1988), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Resistivity measurements were carried out in a survey area in the south of Germany. This area is characterized by complicated subsurface geology. Schlumberger full-arrays and their respective half-arrays were recorded simultaneously. The results obtained by the one-dimensional (1D) interpretation of the full-array measurements were incorrect because of a resistivity discontinuity. This discontinuity, under a relatively thick overburden, could only be located by the half-array soundings. Its exact location and the resistivity distribution in the subsurface were ascertained by comparing the sounding curves with 2D model curves, which are calculated by a finite-difference method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1988.tb02202.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    INTERPRETATION AND DEPTH OF INVESTIGATION OF GRADIENT MEASUREMENTS IN DIRECT CURRENT GEOELECTRICS (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 33 (1985), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Gradient measurements in a homogeneous electrical primary field can easily be interpreted for simple models. The simplified solution (conducting or resistant body in a homogeneous space in a homogeneous electrical field) is often sufficiently accurate, as comparisons with the exact solution (body of finite resistivity in a homogeneous half-space in a quasihomogeneous electrical field) show. The exact geometry of the body cannot be determined by gradient measurements; the same anomaly of apparent resistivity can be caused by different bodies. In particular, the similarity between a sphere and a cube of the same volume is very high.There is a distinct influence of the resistivity of the overburden: the higher this resistivity is, the stronger is the effect caused by a buried body.If a deviation of 10% of the apparent resistivity is assumed as the lower boundary at which a buried body can be detected by gradient measurements, the depth of investigation for a three-dimensional body is approximately equal to its width; in the two-dimensional case the thickness of the overburden can be twice the width. If the overburden has a resistivity which is higher than the resistivity of the substratum, these depths are greater. The greatest possible depth is approximately three times the width of the body.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1985.tb01362.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    AAPM/HPA SURVEY OF HIGH-ENERGY ELECTRON DEPTH-DOSE DATA (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 161 (1969), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1969.tb34054.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Optische Rotationsdispersion und Circulardichroismus bei Jod-Polysaccharid-Komplexen (1968)
    Springer
    Colloid & polymer science 227 (1968), S. 65-72 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary Aqueous solutions of iodine complexes with starch, different samples of amylose or amylopectin show an induced positive Cotton effect in the region of the absorption maximum. The rotatory power and the extinction at 660 and 445 mμ depends upon iodine amylose ratio. The optical of some complexes increases with time, whereas the absorption remains constant. Experimental conditions which change the structure of the channel complexe (heating, addition of salts, solvents, urea or detergents) influence the induced Cotton effect.
    Notes: Zusammenfassung Die wäßrigen Lösungen der Jodkomplexe von Stärke, verschiedenen Amylosen und Amylopektinen zeigen im Bereich der betreffenden Absorptionsmaxima einen induzierten positiven Cotton-Effekt. Die Drehwerte hängen in der gleichen Weise vom Jod-Amylose-Verhältnis ab wie die Extinktionen bei 660 und 445 mμ. Die Drehwerte einiger Jod-Polysaccharid-Komplexe nehmen mit der Zeit stark zu, obwohl die Extinktion konstant bleibt. Maßnahmen, durch welche die Struktur der Jod-Einschlußverbindung verändert wird (Erwärmung, Zusatz von Salzen, Lösungsmitteln, Harnstoff, Netzmitteln) haben einen starken Einfluß auf den induzierten Cotton-Effekt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02085280
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Theoretical and experimental studies of combined self-phase modulation and stimulated Raman-scattering in single-mode fibres (1987)
    Springer
    Optical and quantum electronics 19 (1987), S. 237-246 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A theoretical model of pulse propagation through single-mode fibres is presented taking into account the combined action of self-phase modulation, stimulated Raman-scattering and the group velocity mismatch between pump and Stokes pulses. Due to the walk-off of Stokes and laser light an asymmetric pump pulse depletion resulting in considerable reshaping of laser pulses and an asymmetric self-phase modulation spectrum can be calculated and experimentally verified. A maximum laser power is found to be transferable through the fibre.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02032518
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Relationship between antipyrine absorption and blood flow rate in rat jejunum, ileum, and colon (1987)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 335 (1987), S. 97-102 
    Details
    ISSN: 1432-1912
    Keywords: Antipyrine ; Intestinal absorption ; Intestinal blood flow
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The appearance rate of antipyrine in intestinal venous blood was measured in anesthetized rats during perfusion (0.2 ml/min) of a buffered solution with 1 mmol/l labeled antipyrine through a jejunal, ileal, or colonic segment (length: 2–5 cm). When the blood flow rate was increased from 0.9–1.2 to 1.6–2.0 ml min−1 g−1 by raising the systemic blood pressure from 80 to 130 mm Hg, the absorption of antipyrine increased only in the colon. Stepwise reduction of the blood flow rate from 1.4–1.7 to 0.2–0.3 or stepwise raise from 0.2–0.3 to 1.4 ml min−1 g−1 by constriction or release of the mesenteric artery decreased or increased the absorption rate of antipyrine. The relation between absorption and flow rate can be described by curves which ascend at low and level off into a horizontal section at high flow rates. At the same blood flow rate the regional absorption rate decreased in the order jejunum, ileum, and colon with the largest step between ileum and colon. Model analysis yielded the following results for jejunum, ileum, and colon, respectively: permeability-surface area product 0.083, 0.074, and 0.037 ml min−1 g−1; fraction of absorptive site blood flow rate 0.24, 0.19, 0.08. The differences can be attributed mainly to the change of the surface area from jejunum to ileum and colon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00165043
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Pediatric spinal sonography. Part II: Malformations and mass lesions (1988)
    Springer
    Pediatric radiology 18 (1988), S. 105-111 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The most important spinal disorders in childhood are malformations and mass lesions. The sonographic appearance of the various kinds of dysraphism and their differentiation, of malformations at the cranio-cervical junction, and of mass lesions is demonstrated and illustrated. Based on our preliminary experience, spinal sonography appears to be useful as the first imaging device for the differentiation of complex malformations and as a screening method for occult dysraphism. In mass lesions spinal sonography is useful to diagnose and follow-up disease, with additional imaging procedures currently needed for confirmation of diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02387552
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Ultrasonography of the infant hip. Part III: Clinical application (1987)
    Springer
    Pediatric radiology 17 (1987), S. 226-232 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report on our results of ultrasonography of the infant hip over 2 years. Twenty-three percent of patients with abnormal sonogram showed no clinical suggestion of hip disorder. Suspicion of dislocation based on mobility, asymmetrical trochanteric distance, click or snapping of the hip and inhibited abduction were the most useful clinical criteria predicting disease in 93%, 19% and 16%, respectively. Breech presentation and family history of hip dysplasia or dislocation were important anamnestic data (21% and 16% predictive value, respectively). The significantly shorter duration of therapy in early detected dislocation or dysplasia makes the need for early diagnosis of these disorders obvious. Special emphasis lies on the physiological maturation of the acetabulum and the femoral ossification center. Normal ranges of important diagnostic criteria and angles depending on chronological age are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02388165
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Sonography of slipped humeral epiphysis due to birth injury (1987)
    Springer
    Pediatric radiology 17 (1987), S. 425-426 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Sonographical diagnosis of slipped epiphysis of the proximal humerus is reported in a new-born with birth traumatic etiology. In these rare conditions sonography is recommended as method of choice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02396624
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Wavelength tunable subpicosecond pulse generation with a fiber grating Raman laser (1989)
    Springer
    Applied physics 49 (1989), S. 263-268 
    Details
    ISSN: 1432-0649
    Keywords: 42.80.Mv ; 42.65.-k ; 42.70.Ce
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Operation of a wavelength tunable fiber grating Raman laser working in the 1.1 μm regime is demonstrated. The pumping mechanism utilizes the process of stimulated perpendicular Raman scattering, possible in fibers for which birefringence can compensate dispersion. A total tuning range of 40 nm with a minimum output pulse duration of 0.8 ps is achieved by using two optical fibers and controlling their birefringence thermally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00714645
    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...