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
Filter
  • Springer  (129)
  • American Geophysical Union (AGU)
  • 2005-2009
  • 2000-2004
  • 1985-1989
  • 1975-1979  (129)
  • 1978  (129)
Collection
Keywords
Publisher
Years
  • 2005-2009
  • 2000-2004
  • 1985-1989
  • 1975-1979  (129)
Year
  • 1
    Electronic Resource
    Electronic Resource
    A subgradient algorithm for certain minimax and minisum problems (1978)
    Springer
    Mathematical programming 15 (1978), S. 130-145 
    Details
    ISSN: 1436-4646
    Keywords: Minimax Problems ; Minisum Problems ; Nondifferentiable Optimization ; Subgradients ; Location Problems ; Linear Approximation Problems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract We present a subgradient algorithm for minimizing the maximum of a finite collection of functions. It is assumed that each function is the sum of a finite collection of basic convex functions and that the number of different subgradient sets associated with nondifferentiable points of each basic function is finite on any bounded set. Problems belonging to this class include the linear approximation problem and both the minimax and minisum problems of location theory. Convergence of the algorithm to an epsilon-optimal solution is proven and its effectiveness is demonstrated by solving a number of location problems and linear approximation problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01609012
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Anodic dissolution of galena concentrate in perchloric acid (1978)
    Springer
    Journal of applied electrochemistry 8 (1978), S. 25-32 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A basic study has been made on the anodic dissolution of lead sulphide ore (galena) in perchloric acid. The electrodes used in the research were fabricated by melting and casting the ore in a suitable mould. The phases which were present in sufficient quantities to be detected by X-ray diffraction were PbS and ZnS. Coulombic efficiencies were determined at 40° C at various levels of pH and current density, and were in the range of 90% for most of the tests. Transient studies revealed a non-uniform surface attack and that the dissolution reaction was irreversible, as indicated by the absence of cathodic currents, in the vicinity of the rest potential. Steady-state studies showed the reaction to be activation controlled and that the rate-determining step was a chemical reaction following the first electron transfer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615390
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The effect of antimony, chloride ion, and glue on copper electrorefining (1978)
    Springer
    Journal of applied electrochemistry 8 (1978), S. 109-119 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A study has been made to determine the effect of antimony, chloride ion, and glue on copper electrorefining. All deposits were made at a temperature of 65° C on a titanium cathode. Current densities of 398 A m−2 and 133 A m−2 were used. The deposits were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD) to determine morphology and crystal orientation. Atomic absorption (AA) and Auger spectroscopy (AES) were used to study the chemical composition of the deposits and a simple bend test was used to determine structural integrity. It was found that when the antimony concentration in the electrolyte exceeded 300 ppm, brittle deposits were produced containing considerable amounts of antimony. Very small amounts of chloride ion (1.5 ppm or above) decreased the codeposition of antimony greatly and produced ductile deposits. However, at a chloride ion level of 15 ppm or above, the back side of the deposit had a very rough, powdery appearance. The effect of glue was to counteract this and to produce a mirror-like finish on the deposit back.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617669
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Transition metal nitrosyl compounds, Part XXV1 Studies of some nitrosyl complexes of molybdenum and tungsten (1978)
    Springer
    Transition metal chemistry 3 (1978), S. 81-87 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary On u.v. irradiation, the dinitrosyldithiocarbamato M(NO)2 (S2 CNR2 )2 (M = Mo or W) complexes are converted quantitatively into the mononitrosyl M(NO)(S2CNR2)3 complexes. The tungsten complex exhibits nonrigid behaviour at high temperatures; the activation energy for this process has been determined and compared to that of the molybdenum analogue. The M(NO)2 (MeCOCHCOMe)2 and M(NO)2 [(O)SCNR2]2 compounds have been prepared; these undergo conversion into uncharacterized nitrosyl derivatives upon irradiation. Cationic complexes of the type [M(NO)2 (MeCN)4]2+, [M(NO)2 (MeCN)3 X]+ and [M(NO)2 (MeCN)2 (MeCOCHCOMe)]+ have been prepared and their exchange with CD3CN studied. Exchange occursvia a dissociative process and is stereospecific for [M(NO)2 (MeCN)4 ]2+ (M = Mo or W) and [M(NO)2 (MeCN)3 X]+ (M = MO, X = Cl; M = W, X = Br).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01393515
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Half-life andg-factor of the 11/2− isomeric states in115Sb and117Sb (1978)
    Springer
    The European physical journal 285 (1978), S. 177-181 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using the time-differential perturbed angular distribution method (TDPAD) theg-factors of the 11/2− isomeric states in115Sb and17Sb have been measured to beg(115Sb, 11/2−)=0.97 ±0.10 andg(117Sb, 11/2−)=1.02 ±0.07. The experimental half-lives and theg-factors are compared to the single-particle estimates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408744
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Deformations of elastic membranes—Effect of different constitutive relations (1978)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 29 (1978), S. 315-327 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Description / Table of Contents: Zusammenfassung Ergebnisse für nichtlineare axialsymmetrische Deformationen bei ebenen Kreismembranen und sphärischen Haubenmembranen unter gleichförmigem Druck werden besprochen. Besondere Beachtung findet die Auswirkung zweier verschiedener Stoffbeziehungen auf die Natur der Verformung, wenn sich die Membran in die ungefähre Gestalt einer Halbkugel deformiert.
    Notes: Abstract Results for the nonlinear axisymmetric deformations of flat circular membranes and of spherical cap membranes subjected to a uniform pressure are presented. The emphasis of the study is on the effect of two different constitutive relations on the nature of the deformation when the membrane deforms into an approximate hemispherical shape.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01601526
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Reentry problems involving the use of dialifor on grapes in the San Joaquin Valley of California (1978)
    Springer
    Archives of environmental contamination and toxicology 7 (1978), S. 465-481 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract An investigation was made into an illness episode characterized by cholinesterase depression and cholinergic symptoms reported among 118 field workers harvesting grapes treated with Torak® (dialifor) and Zolone® (phosalone) in a vineyard near Madera, California. Dialifor had been applied at the rate of 1.0 pound per acre in 30 gallons of water between 15 and 40 days earlier using a Kinkelder air blast sprayer. Dissipation studies in an earlier study in Soledad, California, using concentrated spray resulted in initial dislodgeable residues of 2.1 ug/cm2 with a half-life of 14 to 15 days. A similar level of dislodgeable residue resulted at the time of application in the vineyard at Madera. Dislodgeable residues as high as 0.7 ug/cm2 were encountered by workers at the time of entry with most residues being in the range of 0.11 to 0.45 ug/cm2. Residue of dialifor on the foliage in 36 other grape vineyards in the San Joaquin Valley were determined at the time of harvest and were shown to be 0.13 ug/cm2 or less. In four of the 36 vineyards, blood was obtained from workers harvesting grapes. None of the field workers had blood cholinesterase values outside control values. The investigation indicated that with initial dislodgeable residues of dialifor as high as 2.3 ug/cm2, a period of at least 65 days is required before a possibly safe level of something less than 0.06 ug/cm2 is reached. The analysis of the residues in the 36 other vineyards indicated that the initial deposits and/ or the half-life of dialifor varied considerably throughout the San Joaquin Valley. Because of this variation, the use of reentry intervals for dialifor may require replacement by on-site residue tests prior to entry. The results indicated that phosalone residues were not responsible for the illness in the field workers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02332072
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Wind-induced changes of temperature and currents in Lake Constance (1978)
    Springer
    Meteorology and atmospheric physics 27 (1978), S. 333-373 
    Details
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Um die Ursachen des stark veränderlichen Strömungssystems im Bodensee genauer aufzuklären, sind im Herbst 1972 synoptische Messungen über die Windeinwirkung auf den See mit selbsttätig registrierenden ozeanographischen und meteorologischen Instrumenten angestellt worden. Am Beispiel eines starken Westwindfeldes werden die Auftriebsvorgänge im westlichen Teil des Sees sowie der Wasseraustausch durch die See-Enge von Mainau (s. Abb. 1) eingehend analysiert. Zur quantitativen Interpretation der Vorgänge wird die Reaktion des Sees auf das Windfeld durch numerische Modellrechnungen simuliert. Der Vergleich der berechneten und beobachteten Temperatur- und Strömungsschwankungen zeigt, daß die Corioliskraft linkerhand von der Richtung, in die der Wind weht, eine beträchtliche Verstärkung des Auftriebs bewirkt und daß die Auftriebsbewegungen in starkem Maße von der räumlichen Verteilung der anregenden Kräfte abhängen.
    Notes: Summary In the autumn of 1972 the wind-induced motions in Lake Constance have been measured simultaneously by means of self-recording oceanographical and meteorological instruments. For the case of a strong westerly wind field the process of upwelling in the western part of the lake is analysed and a detailed description of the corresponding exchange of water through the channel of Mainau at the mouth of the narrow western appendix (see Fig. 1) is given. In order to provide a quantitative interpretation of the dynamics involved the response of the lake is simulated by numerical models. The comparison of the calculated response against the measured reaction of the lake yields a considerable influence of the Coriolis force, which results in a pronounced increase of upwelling along the northern shore in that case. The response exhibits furthermore a high sensitivity to the spatial distribution of the driving force.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02247955
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    A kinetic determination of ultramicro quantities of manganese(II), molybdenum(VI) and tungsten(VI) on the basis of their catalytic action on the oxidation of Azorubin S by hydrogen peroxide (1978)
    Springer
    Microchimica acta 69 (1978), S. 297-304 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Kinetik der katalytischen Oxydation von Azorubin S mit Wasserstoffperoxid in Anwesenheit von Mn(II), Mo(VI) und W(VI) wurde untersucht, um die optimalen Bedingungen für deren kinetisch-katalytische Bestimmung zu finden. Mn(II) wurde im Konzentrationsbereich von 5,5–33,0×10−3, Mo(VI) von 1,3–8,1 und W(VI) von 5,9–44,1μg/ml mit Standardabweichungen 〈11% bestimmt. Außerdem wurden einige der möglichen Störungen untersucht.
    Notes: Summary A study has been made of the kinetics of catalytic oxidation of Azorubin S by hydrogen peroxide in the presence of Mn(II), Mo(VI) and W(VI) in order to find optimal conditions for the kinetic catalytic determination of these elements. Manganese(II), molybdenum(VI) and tungsten(VI) were determined in the concentration ranges 5.5–33.0×10−3, 1.3–8.1 and 5.9–44.1μg/ml, respectively. Standard deviations were less than 11%. The effect of some foreign ions on these determinations was also investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01201734
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Possible geothermal resources in the Coast Plutonic Complex of southern British Columbia, Canada (1978)
    Springer
    Pure and applied geophysics 117 (1978), S. 172-179 
    Details
    ISSN: 1420-9136
    Keywords: Coast Plutonic Complex ; Quaternary volcanism ; Plate tectonics ; Heat flow ; Heat production
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract In southern British Columbia the terrestrial heat flow is low (44 mW m−2) to the west of the Coast Plutonic Complex (CPC), average in CPC (50–60 mW m−2),and high to the east(80–90 mW m−2). The average heat flow in CPC and the low heat generation (less than 1 μW m−3) indicate that a relatively large amount of heat flows upwards into the crust which is generally quite cool. Until two million years ago the Explorer plate underthrust this part of the American plate, carrying crustal material into the mantle. Melted crustal rocks have produced the inland Pemberton and Garibaldi volcanic belts in the CPC. Meager Mountain, a volcanic complex in the CPC 150 km north of Vancouver, is a possible geothermal energy resource. It is the product of intermittent activity over a period of 4 My, the most recent eruption being the Bridge River Ash 2440 y B.P. The original explosive eruption produced extensive fracturing in the granitic basement, and a basal explosion breccia from the surface of a cold brittle crust. This breccia may be a geothermal reservoir. Other volcanic complexes in the CPC have a similar potential for geothermal energy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00879744
    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...