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
    LIMITING DEPTH OF DETECTION IN LINE ELECTRODE SYSTEMS (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 25 (1977), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: An infinitely resistive/conductive horizontal bed is assumed in an otherwise homogeneous and isotropic half space. Schlumberger, three electrode, and unipole profiles are computed at right angles to the strike of the bed. The Schwarz-Christoffel method of conformal transformation and numerical methods of solving non-linear differential equations are used to solve the boundary value problem. It is observed that (i) the three electrode system is the most sensitive gradient electrode configurations for electrical profiling, (ii) the apparent resistivities for Schlumberger, three electrode, and unipole methods become maximum when the depth of the bed is 0.06 L, 0.1 L, and 0.055 L for a resistive bed and minimum when depths are 0.085 L, 0.04 L-0.02 L and indeterminate for conductive beds, respectively, (iii) the limiting depths of detection (defined in the text) by Schlumberger, three electrode, and unipole configurations are respectively 0.9 L, 6.6 L and 2.0 L for resistive beds and 0.58 L, 1.17 L and 1.5 L for conductive beds.The electrode separation L is the distance between the two farthest active electrodes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1977.tb01202.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    COMMENTS ON “AN INTERPRETATION THEORY FOR INDUCED POLARIZATION VERTICAL SOUNDINGS (TIME DOMAIN)’AND “A NEW PARAMETER FOR THE INTERPRETATION OF INDUCED POLARIZATION FIELD PROSPECTING (TIME DOMAIN)’ (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 26 (1978), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1978.tb01624.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Nebelkammer-Untersuchungen der Erzeugung durchdringender Schauer in Aluminium und Blei (1953)
    Springer
    The European physical journal 136 (1953), S. 654-658 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Es wurden Untersuchungen über die Größe: Häufigkeitsbeziehung (size-frequency distribution) örtlich erzeugter, durchdringender Schauer in Seehöhe unter Aluminium und Blei ausgeführt. Die Verteilungen zeigen keinen irgendwie bemerkenswerten Unterschied, wie er nach der „Mehrfach“-Theorie vonHeitler undJanossy erwartet würde. Die experimentellen Ergebnisse sind eher in Übereinstimmung mit der Theorie echter „Vielfach“-Erzeugung, wie sie vonHeisenberg vorgeschlagen wurde.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01338953
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Anomalous Dielectric Constant of Artificial Ionosphere (1937)
    [s.l.] : Nature Publishing Group
    Nature 140 (1937), S. 586-587 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SINCE the earliest experiments of Barton and Kilby1 in 1913 on the dielectric properties of ionized air, there have been many attempts by investigators to record experimentally the depression of the dielectric constant of an artificial ionosphere (as the ionized air in a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/140586b0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Anomalous Dielectric Constant of Artificial Ionosphere (1937)
    [s.l.] : Nature Publishing Group
    Nature 140 (1937), S. 1066-1066 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] APROPOS our letter in NATURE of October 2, p. 586, it has been pointed out to us by Prof. E. V. Appleton and Dr. F. W. Chapman that though the curves delineating the variations of (µ2 with N and 1/f2 are quite correct, they cannot, however, be regarded as showing ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1401066b0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Computation of telluric field and apparent resistivity over an anticline (1970)
    Springer
    Pure and applied geophysics 80 (1970), S. 205-217 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary A combination of Schwarz-Christofel method and numerical methods of solving non-linear differential equations has enabled us to solve for the effect of an anticline on the telluric field and apparent resistivity. From the computed anomaly curves we conclude that complete information about an anticline can be obtained only if its height is at least thirty per cent of the total depth to the basement. However, partial information; e.g., depth to the top of an anticline, can be obtained even for smaller anticlines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00880209
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Model studies on electro-telluric interpretation problems of some geological inhomogeneities (1973)
    Springer
    Pure and applied geophysics 102 (1973), S. 105-119 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The rotating nature of telluric field is simulated in an electrolytic model tank. Variations of this rotating field due to the presence of a few two and three dimensional geological models, simulated in the tank, are studied. The telluric ellipses, recorded on a C.R.O. Screen, are found to be useful for qualitative and quantitative interpretation of the non-linearly polarised telluric field data. Relative usefulnesses of the various parameters, e.g., (i)M=ratio of the semimajor and semiminor axis, (ii)K = square root of normalized surface areas, (iii) λ = linear eccentricity (✓(a 2/b 2-1) and (iv)e = conventional eccentricity ((✓1-b 2/a 2)), of a telluric ellipse are tested. Linear eccentricity appears to be the most sensitive parameter. Methods for determining depth and horizontal extent of a structure from a telluric map are suggested. Near surface inhomogeneities, as revealed from the experiment are unlikely to affect the telluric map due to a basement structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00876597
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Theoretical analysis of telluric field over a faulted basement (1973)
    Springer
    Pure and applied geophysics 105 (1973), S. 836-846 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The telluric field anomalies over a faulted basement are computed along profiles, perpendicular to the strike of the fault planes. Schwarz-Christoffel transformations, numerical method of solving non-linear differential equations and graphical crossplotting are used to obtain the solution of the boundary value problem. Computed anomaly curves reveal that (i) quantitative estimation regarding the width of the structure and throw of the faulting can be made from the telluric and its horizontal derivative maximal by graphical crossplotting, (ii) degree of resolution decreases with the increasing depth of the structure, (iii) the effects of a faulted basement (rectangular ridge) and those of a folded basement (triangularrridge) (Roy andNaidu [2]) are similar to a considerable extent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875832
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Mechanistic studies of thiol-dimethylsulfoxide initiated polymerization of methylmethacrylate from endgroup analysis (1973)
    Springer
    Colloid & polymer science 251 (1973), S. 131-135 
    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: Zusammenfassung Die Endgruppenanalyse von Polymethylmethacrylat, das durch Initiierung mit Thioldimethylsulfoxid-Systemen hergestellt war, wurde unter Anwendung unserer in unserem Labor entwickelten Färbungstechnik durchgeführt. Die verwendeten Thiole waren 2-Mercaptoäthylaminhydrochlorid, 2-Mercaptoäthanol, Thioglykolsäure und N-Butandiol. Die ersten drei Thiole fügten Amin-Hydroxyl- und Carboxyl-Endgruppen respektiv bis zum Betrag von etwa einer pro Makromolekül ein, während das letztere wie erwartet keine der oben genannten funktionalen Endgruppen im Polymer erzeugte. Aufgrund dieser EndgruppenResultate wird auf eine Initiierung durch Thiylradikale geschlossen. Der wahrscheinliche Abbruchmechanismus wird ebenfalls diskutiert.
    Notes: Summary Endgroup analysis of polymethylmethacrylate obtained by initiation with thiol-dimethyl sulfoxide systems has been carried out using dye-techniques developed in our laboratory. Thiols used are 2-mercaptoethylamine hydrochloride, 2-mercaptoethanol, thioglycolic acid and n-butane thiol. The first three thiols incorporated amine, hydroxyl and carboxyl endgroup respectively to the extent of about one per macromolecule, while the last one as expected produced none of the above functional endgroups in the polymer. In the light of endgroup results initiation through thiyl radicals has been suggested. Probable termination mechanism has also been discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01498937
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Das Thiol/Dimethylsulfoxid-System als Initiator fiir die Polymerisation in benzolischem Medium. 2. Mitt. Kinetische Studien (1978)
    Springer
    Colloid & polymer science 256 (1978), S. 195-195 
    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
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01679357
    Location Call Number Expected 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...