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
    Measurement of relaxation resonance, damping, and nonlinear gain coefficient from the sidebands in the field spectrum of a 1.3 μm InGaAsP distributed feedback laser (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 1845-1847 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We calculate an expression for the fine structure in the field fluctuation spectrum of a semiconductor laser in terms of accessible device parameters. We measure the spectrum of an InGaAsP DFB laser and determine the linewidth, relaxation resonance, and damping versus current. From the relation between damping and current, we determine the nonlinear gain coefficient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101254
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Heavy fermions in Kondo lattice compounds (invited) (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3054-3059 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Even in the absence of both magnetic order and superconductivity, Ce-based Kondo lattice systems show distinct anomalies in the low-temperature specific heat and thermopower. These features can be understood, in the frame of a microscopic treatment of the asymmetric Anderson model, by taking into account the periodicity of the Ce sites. A substantial variation in the observed phenomena between CeAl3 and normal (n) state CeCu2Si2 on the one hand as well as CeRu2Si2 and CeCu6 on the other highlight the importance of realistic band structure calculations for the quasiparticles ("heavy fermions'') in these different compounds. The temperature dependence of the upper critical magnetic field Bc2(T) for the heavy-fermion superconductor CeCu2Si2 (Tc(approximately-equal-to)0.6 K) shows a flat maximum at ∼0.2 Tc, which is ascribed to coherence-derived structure in the n-state quasiparticle density of states. A dc Josephson effect with a critical pair current of ordinary size is observed for the first time on a weak link between CeCu2Si2 and Al. This proves that CeCu2Si2 is a superconductor with dominant spin-singlet pairing. No Josephson effect can be found, however, between heavy-fermion superconducting UPt3 and Al, Nb, or UPt3 as counterelectrodes, in accord with a possible anisotropic (L≥1, S=0 or 1) pairing in UPt3. For this material, the thermal conductivity in the superconducting state approaches an asymptotic κS=αT2 law as T→0, with α=32 mW/cm K3, and the thermopower above TC shows a temperature dependence similar to that of the "spin fluctuation'' system UAl2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.335212
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Antigenicity and immunogenicity of the polyagglutinable antigen of Pseudomonas aeruginosa (1988)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 47 (1988), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Pseudomonas aeruginosa strains isolated from cystic fibrosis patients agglutinate in antisera against anti-polyagglutinable antigen (PA). Anti-PA antibodies were formed in rabbits when immunization was carried out with bacteria possessing core-bound PA, independently of whether the strains were of S or R phenotype. For bacterial agglutination with anti-PA antibodies two prerequisites are essential: the bacterial cell must be of R phenotype and must possess the core-linked PA. In contrast, the PA in the isolated LPS's can be demonstrated in passive haemagglutination for both (S or R) phenotypes, provided the PA is core-linked. Two PA forms have been recognized, one found only in P. aeruginosa species, both in free and bound form. The other one is shared by all members of Pseudomonas genus but is present only in a free, unbound form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1988.tb02498.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
    Temperature-dependent incorporation of 4-amino-l-arabinose in lipid A of distinct Gram-negative bacteria (1989)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 60 (1989), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract The presence and the relative amount of 4-amino-l-arabinose in lipopolysaccharides of members of the Enterobacteriaceae family and in a single strain of Chromobacterium violaceum has been studied with regard to growth-temperature dependent variations. Changes in the presence and the amount of 4-amino-l-arabinose (4-AA) were observed in almost all cases, but the variations observed were not consistent among different species. While Salmonella minnesota and Proteus mirabilis showed higher levels of incorporation at higher temperatures, the S- and R-forms of Yersinia enterocolitica showed the opposite effect, i.e. only marginal incorporation by growth at 37°C, in contrast to rather high values by growth at 10°C. Chromobacterium violaceum, however, showed no significant alteration in the 4-amino-l-arabinose content when growth either at 14 or at 37°C. DOC-PAGE pattern of isolated lipopolysaccharides showed characteristic profiles indicating that the O-chain-synthesis of distinct Enterobacteriaceae is also differently influenced by changes in growth temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1989.tb03493.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Structural relationship between the polyagglutinable antigen and the core polysaccharide of Pseudomonas aeruginosa (1988)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 47 (1988), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract It has been observed that each strain of the Pseudomonas aeruginosa species harbours the so-called polyagglutinable antigen (PA). Some strains may produce it in a form which is linked to the core moiety of lipopolysaccharide (LPS) and this type of PA can thus be detected by passive haemagglutination using the isolated LPS as coating antigen. Other strains synthesize PA exclusively in a free form, which is also coextractable with LPS, its presence can, however, be demonstrated by the haemagglutination inhibition test. From a polyagglutinable strain of P. aeruginosa an R-type LPS was isolated having the core-linked PA. This LPS preparation was highly immunogenic with regard to its PA moiety. The core-bound PA seems to exert an immunosuppression on the core region, hence, the polyagglutinable strains isolated from cystic fibrosis patients only engender anti-PA antibodies, whereas antibodies against both, side chain and core region of LPS, are not engendered. The mucoid exopolysacharides also contains the PA which could possibly play an important role in the patient by protecting P. aeruginosa cells against anti-PA antibodies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1988.tb02497.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    In vitro Fertilisationsprogramm an der Universitäts-Frauenklinik Graz (1985)
    Springer
    Archives of gynecology and obstetrics 238 (1985), S. 150-151 
    Details
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02429940
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Mikrobiologische Untersuchung als Screening bei In-vitro-Fertilisation und Embryotransfer (1985)
    Springer
    Archives of gynecology and obstetrics 238 (1985), S. 146-147 
    Details
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02429937
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Synthetic bayleyite, Mg2[UO2(CO3)3]·18H2O: Thermochemistry, crystallography and crystal structure (1986)
    Springer
    Mineralogy and petrology 35 (1986), S. 133-146 
    Details
    ISSN: 1438-1168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Zuseammenfasung Thermochemie, Morphologie, optische Eigenschaften und Kristallstruktur von Bayleyit, Mg2[UO2(CO3)3]·18H2O, monoklin, wurden anhand künstlich hergestellter Kristalle untersucht. Durch thermochemische Untersuchung wurden inkongruentes Schmelzen bei 55°, eine dreistufige Wasserabgabe sowie eine zweistufige CO2-Abgabe festgestellt. Morphologie: parallel zu [001] gestreckte Prismen mit {100}, {110}, {210}, {001}, {401}, {021}, {211}, {111}, und {311} als wichtigste Formen. Optische Daten:n α=1.453,n β=1.498,n γ=1.499, 2V x =16°,Y=b,X c=11°. Kristallstruktur: RaumgruppeP21/a,a=26.560(3),b=15.256(2),c=6.505(1) Å, β=92.90(1)°,Z=4;R=0.029 für 5126 unabhängige, mit MoK α-Strahlung gemessene Reflexe. Die Struktur enthält isolierte Mg(H2O)6-Oktaeder, UO2(CO3)3-Gruppen und “freie” Wassermoleküle, die ausschließlich durch Wasserstoffbrücken miteinander verknüpft sind.
    Notes: Summary Thermochemistry, morphology, optical properties and crystal structure of synthetic bayleyite, Mg2[UO2(CO3)3]·18H2O, monoclinic, have been studied. Incongruent melting at 55°, three steps of dehydration and two steps of decarboxylation have been found by thermochemic investigations. Morphology: Prisms along [001] with {100}, {110}, {210}, {001}, {401}, {021}, {211}, {111} and $$\{ \bar 311\} $$ as the most important forms. Optical data:n α=1.453,n β=1.498,n γ=1.499, 2V x =16°,Y=b,X c=11°. Crystal structure: Space groupP21/a,a=26.560(3),b=15.256(2),c=6.505(1) Å, β=92.90(1)°,Z=4,R=0.029 for 5126 independent reflections measured with MoK α-radiation. The structure is built up from isolated Mg(H2O)6 octahedra, UO2(CO3)3 units and lattice water molecules, all held together by hydrogen bonds only.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01140845
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Wind-induced tree sways (1987)
    Springer
    Trees 1 (1987), S. 195-206 
    Details
    ISSN: 1432-2285
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Conclusions The question of how the results of investigations on wind-induced tree sways can be used in practice is often posed. First, it must be said that, according to information in the literature, no tree species can survive violent storms (with mean wind speeds over a period of 10 min higher than 30 m/s) without any damage. This threshold value for wind speed is related to the height near the top of a forest stand. Taking the results of the spectral method as a basis for the reduction of storm risk of vital conifers, necessary silvicultural action must be: (1) to influence the amount and frequency distribution of the wind force in such a way that its shere of action becomes more and more unsuitable for tree sways, and (2) to raise the characteristic frequencies of the trees' primary sways because then effective wind force takes on lower and lower values due to narrow-band energy transfer. Numerous silvicultural methods for achieving these objectives, such as cutting off the tops of crowns or chaining trees together, are described in detail by Rottman (1986).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01816816
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    facet.materialart.
    Unknown
    Die Glossen in der Berliner Statius-Handschrift (1894)
    Berlin, etc. : Periodicals Archive Online (PAO)
    Philologus. 53 (1894) 194 
    Details
    ISSN: 0031-7985
    Topics: Classical Studies
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:0215-1894-053-00-000046
    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...