ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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
Collection
Language
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 35 (1970), S. 4004-4004 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica B+C 124 (1984), S. 105-113 
    ISSN: 0378-4363
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica B+C 112 (1982), S. 138-144 
    ISSN: 0378-4363
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica B+C 138 (1986), S. 335-343 
    ISSN: 0378-4363
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 85 (1998), S. 411-425 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Notes: Global change, i.e. the mega-process radically transforming the relationship between nature and human civilization since the end of World War II, is investigated from the point of view of systems analysis. It is argued that this unbridled process should rather be domesticated by planetary control strategies transpiring from a new science called “geocybernetics”. The formal aspects of geocybernetic theory are sketched and illustrated in a tutorial theatre world reflecting the overall environment and development problematic. Within this setting a straightforward operationalization of the sweeping “sustainable development” ideal through a set of concise paradigms can be achieved. Evidence is provided that geocybernetics is actually feasible on the basis of earth system modelling and fuzzy-control techniques.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Excitation functions of the compound nuclear reactions191+193Ir,197Au(6Li,xn+yp) forx =3–13 andy=0–2 have been investigated by means of in-beamγ-ray spectroscopy at the 156 MeV6Li beam of the Karlsruhe Isochronous Cyclotron. The beam energy has been varied in the range of 48 to 156 MeV in steps of about 10 MeV by Be-absorber foils in the external beam line. Absolute cross sections have been determined by normalizing the measuredγ-ray intensities to the production cross sections ofK- X-rays in the target. The experimental excitation functions are discussed on the basis of predictions of the preequilibrium (hybrid) model. While in most cases the theoretical calculations fairly well reproduce energy position and shapes of the curves, strong discrepancies in the absolute scale of the cross sections are observed. The theoretical predictions overestimate the (6Li,xn) cross sections by a factor of about 6. Conspicuous anomalies have been detected when comparing the (6Li, xn+1(2)p) reactions with (6Li,xn) reactions. The reactions with emission of one or two protons are considerably enhanced. The discrepancies and anomalies observed are tentatively explained by the influence of direct reaction channels as the6Li break-up, which experimentally proved to be the dominant contribution to the total reaction cross section. The enhancement of the reactions with emission of protons may be a consequence of transfer reactions into highly excited states combined with compound nucleus formation thus implying a cluster effect in preequilibrium emission process.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1434-601X
    Keywords: 32.30 ; 35.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In the Eu I configuration 4f 7(8 S)6s7s the isotope shift (IS) and hyperfine-structure (hfs) of the levelse 8 S 7/2 andf 8 S 7/2 were determined from the transitions 684.5 nm, 733.7 nm and 821.0 nm to 4f 76s6p. Together with experimental results of our previous measurements a theoretical analysis of the IS and hfs for the complete configuration 4f 7 6s7s can now be carried out. From the IS of the four 6s7s-levels we evaluated the two crossed-second-order-parametersg 3(4f,6s)= −l.l(l)mK andg 3(4f, 7s)= −0.1(l)mK. The ratiog 3/G 3 is determined for various Eu configurations and found to be equal to 5.6(3)·10−6 in complete agreement with a theoretical value following from Hartree-Fock calculations. The single electron hfs splitting constantsa 10(4f)= −1.9 (3) mK,a 10(6s)=396(3)mK, anda 10(7s)=65(3)mK are also determined and compared with those of other Eu configurations.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 321 (1985), S. 57-60 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In order to extend the parametric description of the isotope shift to 5d-electrons in the lanthanides the IS of three GdII transitions (4f 75d6pz 10 F 11/2→4f 75d6sa 10 D9/2, 11/2, 13/2) was measured with enriched isotopes and natural composition of Gd in hollow cathodes. The values −99.75(30)mK, −100.15(25)mK and −101.90(50)mK were obtained for the IS (between156Gd and160Gd) from the lines 367.1 nm, 374.4 nm and 385.6 nm resp. From theJ-dependence of the IS found in the a10 D multiplet the crossed-second-order parameterz 5d =1.40 (35) mK was calculated. After normalization withδ〈r 2〉 andζ 5d the figurez 5d, norm =6.2(1.8)· 10−6 fm−2 agrees fully with the corresponding value from Eu I. This proves that theJ-dependence within a multiplet arises mainly from a crossed-second-order effect, which is originating from the field shift operator and operators of magnetic interactions.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1573-2967
    Keywords: global change ; environmental policy ; rural poverty ; soil degradation ; qualitative modelling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A novel transdisciplinary approach to investigate Global Change (GC) is presented. The approach rests on the decomposition of the intrigue dynamics of GC into patterns of civilization–nature interactions (“syndromes”) by an iterative scientific process of observations, data and system theoretical analyses, and modelling attempts. We illustrate the approach by a detailed analysis of the Sahel Syndrome, which describes the rural poverty driven overuse of natural resources. The investigation is performed by (i) identifying relevant “symptoms” and interlinkages which are characteristics for this pattern, and (ii) a qualitative model representing the internal dynamics of the essential flywheel. The geographical patchwork of the regions affected by the syndrome which is obtained by global data analysis, proves the high global relevance of this pattern. The qualitative model is employed for an evaluation of basic policy strategies debated in the context of rural poverty driven environmental degradation. It turns out that a mixed policy of combating poverty and introducing soil preserving agricultural techniques and practices is most promising to tackle the syndrome dynamics.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 2 (1986), S. 99-103 
    ISSN: 1434-6079
    Keywords: 32.00 ; 35.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The investigation of the isotope shift (IS) and hyperfine structure (hfs) is extended from Eu 4f 7 6s7s to the complete configuration 4f 7 6s8s, by means of the transitions 432.3, 456.5, 463.0 and 493.8 nm to 4f 7 6s6p. A thorough experimental and theoretical analysis — including two further lines 492.8 and 498.7 nm from 4f 7 5d 2 — is carried out which e.g. confirms former fine structure calculations of one of us (J.F.W.) concerning some reclassifications. The discussion of the IS of the four levels (4f 7)6s8s with the sharing rule manifests again the need for inclusion of crossed-second-order effects. For the parameters we evaluated:g 3(4f, 6s)=−1, 2(2) mK andd=79, 3(1.0) mK. The ratiog 3/G 3=−5, 9(1.0)·10−6 is again in full agreement with those found by us in other Eu configurations. The single electron hfs splitting constantsa 4f 10 =−2, 3(4) mK,a 6s 10 =389(4) mK anda 8s 10 =49 (4) mK were also evaluated and compared to those found in 4f 7 6s7s.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...