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  • Springer  (71)
  • 1995-1999  (42)
  • 1980-1984  (29)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1981)
    Springer
    OR spectrum 3 (1981), S. 117-128 
    Details
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01720106
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  • 2
    Electronic Resource
    Electronic Resource
    Histochemical localization of high-sulfur keratins with silver nitrate (1983)
    Springer
    Colloid & polymer science 261 (1983), S. 365-369 
    Details
    ISSN: 1435-1536
    Keywords: wool ; electron-microscopy ; silver staining ; atomic absorption spectrophotometry ; silver content
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The treatment of merino wool with ammoniacal silver nitrate results in a selective staining of high-sulfur proteins. The method has been applied to unmodified and reduced fibres. The electron microscopical studies are supplemented by a quantitative analysis by means of atomic absorption spectrophotometry. At the saturation point no difference in the silver uptake of reduced and unreduced fibres can be established. However, the samples show considerable differences regarding the kinetics of the reaction. The photometric analysis yields a silver uptake of 3 mol Ag/mol cysteine and 6 mol Ag/mol cystine. The silver deposition depends upon the formation of silver mercaptide and silver complexes of unknown structure. In comparison with cysteine the mercaptide formation from cystine occurs very slowly, because the disulfide bond first has to be cleaved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01413944
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  • 3
    Electronic Resource
    Electronic Resource
    In memoriam Henry John Woods (1984)
    Springer
    Colloid & polymer science 262 (1984), S. 839-840 
    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/BF01452212
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  • 4
    Electronic Resource
    Electronic Resource
    Coordination and Cooperation in Dyadic Relationships (1998)
    Springer
    Computational & mathematical organization theory 3 (1998), S. 249-265 
    Details
    ISSN: 1572-9346
    Keywords: cooperation ; coordination ; prisoners dilemma ; superior-subordinate exchange
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract A Markov model with a coordination parameter isdeveloped to depict coordination and cooperation decisionprocesses in 2 × 2 game relationships. The parameters ofthe model can be used to define and measure various forms ofinfluence. The model is applied to data collected using aprisoner's dilemma payoff structure to represent thesuperior-subordinate relationship. The results demonstrate theusefulness of the model and the measures of influence. Superiorsand subordinates are more likely to coordinate following mutualcooperation, achieving matching behaviors more frequently thanan independent-decisions model would predict. Subordinates showslightly more influence over leaders' behaviors than vice versa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009605527435
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  • 5
    Electronic Resource
    Electronic Resource
    Star Formation in Accretion Disks Around Massive Black Holes and Pregalactic Enrichment (1999)
    Springer
    Astrophysics and space science 265 (1999), S. 501-505 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Broad Absorption Lines (BALs) prove the existence of a high velocity outflowing gas with metallicities larger than solar in the central few parsecs of high redshift quasars. At the same distance from the black hole, accretion disks in quasars and Active Galactic Nuclei (AGN) are locally gravitationally unstable, and clumps must form with a size of the order of the scale height of the disk. This is hardly a coincidence, and we have tried to link these two facts. We have assumed that the unstable clumps give rise to protostars, which become massive stars after a rapid stage of accretion, and explode as supernovae, producing strong outflows perpendicular to the disk and inducing outward transfer of angular momentum in the plane of the disk. As a consequence a self-regulated disk made of gas and stars where supernovae sustain the inflow mass rate required by the AGN is a viable solution in this region of the disk. This model could explain the BALs, and could also account for a pregalactic enrichment of the intergalactic medium and of the Galaxy, if massive black holes formed early in the Universe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002191506811
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  • 6
    Electronic Resource
    Electronic Resource
    Nuclear magnetic resonance on oriented194Ir (T 1/2=19.4 h) in Fe and Ni (1982)
    Springer
    The European physical journal 306 (1982), S. 73-78 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine interaction of194Ir (j π =1−;T 1/2=19.4 h) in Fe and Ni has been investigated with the technique of nuclear magnetic resonance on oriented nuclei. For both systems the electronic-orbital-momentum induced electric quadrupole splitting could be resolved. The magnetic and electric hyperfine splitting frequencies,v M =¦gμ N B HF/h¦ andv Q =e 2 qQ/h, respectively, were measured as:194IrFe:v m =408.54 (23) MHz;v q =−2.47(20) MHz;194IrNi:v M =135.24(5) MHz;v q =−1.23 (3) MHz. Taking into account a 3% uncertainty arising from hyperfine anomalies theg-factor is deduced as ¦g¦=0.39 (1). The electric quadrupole moment,Q=+0.352 (18)b, is slightly smaller than expected from the known systematics of deformation parameters in this mass region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01413411
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  • 7
    Electronic Resource
    Electronic Resource
    Zum Reaktionsmechanismus von Glutaraldehyd mit Proteinen (1981)
    Springer
    Monatshefte für Chemie 112 (1981), S. 1313-1323 
    Details
    ISSN: 1434-4475
    Keywords: Crosslinking mechanism ; N-Alkyl-1,4-dihydropyridines ; N,N′-Alkyl-1,5-diiminopentanes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The interaction of glutaraldehyde with model aliphatic amines was studied in order to understand the crosslinking reaction of glutaraldehyde with proteins. The reaction in organic solvents gave N-alkyl-1,4-dihydropyridines and N,N′-dialkyl-1,5-diiminopentanes. The isolated products are new or were previously described by us for the first time1. Hydration of the reaction products led to stable N-alkylpiperidines and N,N′-dialkyl-1,5-diaminopentanes. In aqueous solution the reaction depends on thepH: at apH above 7, N-alkyl-1,4-dihydropyridines and at apH below 7, polymers were obtained. For the crosslinking reaction of proteins with glutaraldehyde the following mechanism is proposed: Monomeric glutaraldehyde reacts with the protein to give intermediate N-alkyl-2,6-dihydroxypiperidines. Intramolecular dehydration leads to the corresponding N-alkyl-1,4-dihydropyridines. Condensation of the cyclic monohydrate of glutaraldehyde and N-alkyl-2,6-dihydroxypiperidines gives linear polymeric crosslinks containing α-oxo-N-alkylpiperidine units.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00904683
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  • 8
    Electronic Resource
    Electronic Resource
    Herstellung von Argininpeptiden mitN 7,N 8-(1,2-Dihydroxycyclohex-1,2-ylen)-Schutz (1982)
    Springer
    Monatshefte für Chemie 113 (1982), S. 457-473 
    Details
    ISSN: 1434-4475
    Keywords: Activation, lactam-formation, side-reactions ; N7,N8-(1,2-Dihydroxycyclohex-1,2-ylen)-arginine-derivatives and -peptides ; Semisynthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A method for the synthesis of arginine peptides is described, in which the side chain guanidine function is blocked through reaction with 1,2-cyclohexanedione in borate buffers. Coupling to the carboxyl group of arginine was achieved by active ester, by dicyclohexylcarbodiimide/1-hydroxybenzotriazole1, and by the mixed anhydride methods2. Neither lactam formation nor acylation of the vicinal hydroxyls of the N7, N8-(1,2-dihydroxycyclohex-1,2-ylene) guanidino group was observed. Removal of the protecting group is strongly influenced by steric factors. Some side reactions observed during modification of peptides and protein fragments with 1,2-cyclohexanedione are also described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00799922
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  • 9
    Electronic Resource
    Electronic Resource
    Optical investigation of CdS quantum dots in Langmuir–Blodgett films (1999)
    Springer
    Applied physics 69 (1999), S. 97-100 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 61.46.+w; 63.20.Pw; 78.40.Fy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Structures with CdS quantum dots produced by the Langmuir–Blodgett (LB) technique were investigated by Raman, IR, and UV spectroscopies. The confinement effect of longitudinal optical (LO) phonons in CdS quantum dots was investigated by Raman spectroscopy. Surface vibrational modes of CdS quantum dots were observed in IR spectra. It was shown experimentally that the frequency of the surface vibrational modes depends on the properties of the surrounding media. An average size of CdS quantum dots of about 3–6.4 nm was obtained from the analysis of UV measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050978
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  • 10
    Electronic Resource
    Electronic Resource
    Toxic effects in fish and the mutagenic capacity of water from the Sava River in Yugoslavia (1981)
    Springer
    Bulletin of environmental contamination and toxicology 26 (1981), S. 179-187 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01622073
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