ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Digitale Medien
    Digitale Medien
    Structural study of refractory-metal-free C40 TiSi2 and its transformation to C54 TiSi2 (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 80 (2002), S. 2266-2268 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The structure of laser-induced refractory-metal-free C40 TiSi2 has been studied by glancing-angle x-ray diffraction (GAXRD) in detail. The result shows that laser-induced C40 TiSi2 has a hexagonal structure with the P6222 space group and lattice parameters a=0.467 nm and c=0.662 nm. The ordering effect and the stress effect on the TiSi2 film are also discussed based on the GAXRD and micro-Raman results. The C40 phase completely transforms to the technologically important C54 phase at a relatively low temperature of 700 °C. © 2002 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1466521
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Experimental study of the subthreshold production of K +-mesons in proton-nucleus collisions (2000)
    Springer
    JETP letters 72 (2000), S. 100-105 
    Details
    ISSN: 1090-6487
    Schlagwort(e): 13.75.Cs ; 21.30.−x
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Energy dependence of the differential cross sections for the production of K +-mesons with a momentum of 1.28 GeV/c (c is the speed of light) by protons incident on Be, Al, Cu, and Ta nuclei was measured for energies both above and below the K +-meson production threshold in pp collisions. Evidence is given for the dominance of the mechanism of direct production in the experiment. The characteristics of momentum distribution are determined for nucleons in the Be and Al nuclei up to 650 MeV/c. The data cannot be described in the model of nuclear spectral function.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1134/1.1316808
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Crystal structure of 3-amino-5-acetyl-4,7-dihydro-6-methyl-4-(2-nitrophenyl)-2-cyanothieno[2,3-b]-pyridine and specific features of its molecular packing in crystal (2000)
    Springer
    Crystallography reports 45 (2000), S. 91-97 
    Details
    ISSN: 1063-7745
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Abstract The molecular and crystal structures of 3-amino-5-acetyl-4,7-dihydro-6-methyl-4-(2-nitrophenyl)-2-cyanothieno[2,3-b]-pyridine is determined by X-ray diffraction. The unit-cell parameters are as follows: a = 14.68(1) Å, b = 8.704(5) Å, c = 25.36(1) Å, V = 3241(6) Å3, d calcd = 1.453 g/cm3, Z = 8(1,1), and space group Pna21. Theo-nitrophenyl substituent is synperiplanar relative to the hydrogen atom at the C(4) atom of the heterocycle. Two crystallographically independent reference molecules A and B in the structure can be considered a pair of the enantiomers related by an approximate noncrystallographic center of inversion. The degree of approximation of this pseudocenter is discussed. It is shown that the structure can be described as a combination of two systems of translationally equal layers. The pseudosymmetry of the crystal structure and the possibility of forming a similar molecular packing with a higher crystallographic symmetry are considered.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1134/1.171142
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Molecular and crystal structures of (S,S)-[o-(α-dimethylaminoethyl)phenyl]phenylarylcarbinols (2000)
    Springer
    Crystallography reports 45 (2000), S. 604-610 
    Details
    ISSN: 1063-7745
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Abstract The crystal structures of (S,S)-o-(α-dimethylaminoethyl)phenyl]phenyl-2,4-dimethylphenyl-carbinol (I) and (S,S)-o-(α-dimethylaminoethyl)phenyl]phenyl-2,4,5-trimethylphenylcarbinol (II) are determined by X-ray diffraction. The molecular and crystal structures of I and II are similar. The crystal structures of I and II are compared based on the analysis of the geometric characteristics of the Vorono $$\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} $$ 2-Dirichlet packing polyhedra. The circular dichroism spectra of amino alcohols I and II revealed a strong positive Cotton effect in the region of 230 nm, which correlates with the S-configuration of the chiral carbinol center.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1134/1.1306570
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Physical aging of epoxy resin blended with poly(ether sulfone): Effect of poly(ether sulfone) molecular weight (2000)
    Springer
    Journal of polymer research 7 (2000), S. 257-266 
    Details
    ISSN: 1572-8935
    Schlagwort(e): Poly(ether sulfone) ; Epoxy resin ; Physical aging ; DSC
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: Abstract The physical aging process of 4-4′-diaminodiphenylsulfone (DDS) cured diglycidyl ether bisphenol-A (DGEBA) blended with various molecular weights of poly(ether sulfone) (PES; Mn = 28,600, 10,600, and 6,137) was studied by DSC. For DGEBA/DDS system blended with a low MW PES-3 (Mn = 6,137), no phase separation of the polymer blend and only one enthalpic relaxation process due to physical aging was observed. Since the high MW PES-1 (Mn = 28,600) had a Tg close to that of fully cured DGEBA/DDS, the fully cured DGEBA/DDS/PES-1 blend had a broader glass transition than a neat DGEBA/DDS system. However, the DSC results showed two enthalpic relaxation processes due to the physical aging of PES-rich and cured epoxy-rich phases as the material was aged at 155 °C (30 °C below Tg). Since the Tgs of PES-1-rich and epoxy-rich phases overlapped with each other, the enthalpic relaxation processes corresponding to each phase coupled to each other in the earlier stage of physical aging. The medium MW PES-2 (Mn = 10,600) has a much lower Tg than that of fully cured DGEBA/DDS, two well separated Tgs were observed for the cured DGEBA/DDS/PES-2 blend, indicating the cured epoxy was immiscible with PES. Aging the polymer blend at 155 °C (24 °C below Tg1 of the PES-2-rich phase and 53 °C below Tg2 of the epoxy-rich phase) produced two well separated relaxation processes due to PES-2-rich and epoxy-rich phases. The experimental results suggested that aging the polymer blend at a suitable temperature would improve the phase separation between PES-1-rich and epoxy-rich phases.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s10965-006-0128-6
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 6
    Digitale Medien
    Digitale Medien
    Modification of natural silk (2000)
    Springer
    Chemistry of natural compounds 36 (2000), S. 84-87 
    Details
    ISSN: 1573-8388
    Schlagwort(e): fibroin ; chemical modification ; bifunctional compound ; active dye
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The effect of ethylene chlorohydrin on the treatment of silk with active dyes is studied by chromatography. The aminoacid glycine is used as a model for silk. Active dyes can be covalently bound to silk using ethylene chlorohydrin.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02234910
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 7
    Digitale Medien
    Digitale Medien
    Voltage shift of hysteresis loops of SrBi2Ta2O9 thin films under unipolar stress (2000)
    Springer
    Applied physics 71 (2000), S. 597-600 
    Details
    ISSN: 1432-0630
    Schlagwort(e): PACS: 77.84.Dy; 77.84.Dj
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract. Voltage shifts of hysteresis loops of metalorganic decomposition (MOD)-derived SrBi2Ta2O9 (SBT) thin films, known as imprint, have been observed after exposing the thin-film capacitors to unipolar pulses. The voltage shift changes with cumulative total time at maximum voltage, following a relationship with no pulse-width dependence. The origin of the voltage shift is briefly discussed in terms of an internal bias field induced by injected electrons trapped at positive polarity. The pulse-measurement responses are greatly affected by the internal bias field, even though no imprint failure was observed up to 1010 unipolar pulses. The voltage shift and asymmetric properties can be removed easily by applying bipolar pulses of saturation amplitude.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003390000697
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 8
    Digitale Medien
    Digitale Medien
    Influence of cationic stoichiometry of the bottom electrode La1-xSrxCoO3 on the microstructures of Pb(Ta0.05Zr0.48Ti0.47)O3 ferroelectric films using Pt/TiO2 conducting barrier (2000)
    Springer
    Applied physics 70 (2000), S. 69-73 
    Details
    ISSN: 1432-0630
    Schlagwort(e): PACS: 77.55+f; 77.80.Dj; 77.80.Fm
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract. The heterostructures La1-xSrxCoO3/Pb(Ta0.05 Zr0.48Ti0.47)O3(PTZT)/La1-x SrxCoO3 have been deposited on SiO2/Si(001) substrates using Pt/TiO2 as conductive barrier by pulsed-laser deposition. La0.25Sr0.75CoO3(25/75) bottom electrodes with a pseudo-cubic perovskite structure favors (001)-textured growth of PTZT films. The ferroelectric capacitor LSCO(25/75)/PTZT/LSCO(25/75) remains about 96% of its polarization after 5×1010 switching cycles at an applied voltage of 5 V and a frequency of 500 kHz. The cross-section morphology of scanning electron microscopy and Rutherford backscattering spectra show that no obvious interdiffusion occurs across the interfaces.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003390050013
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 9
    Digitale Medien
    Digitale Medien
    Mechanical behavior and failure modes of aluminum/bamboo sandwich plates under quasi-static loading (2000)
    Springer
    Journal of materials science 35 (2000), S. 1445-1452 
    Details
    ISSN: 1573-4803
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract Experimental investigations have been made on the quasi-static mechanical behavior and failure modes of aluminum/bamboo sandwich plates. Thermosetting epoxy resin and thermoplastic Polybond resin were used to bond the aluminum sheets and the bamboo. Tensile, compressive and flexural properties were evaluated. The effects of bond conditions on the mechanical behavior and failure modes were examined. The thermoplastic Polybond resin resulted in a stronger interface bond than the thermosetting epoxy resin. The improvement of the interface bond led to significant increases in compressive and flexural properties. The tensile properties were found to be insensitive to the interface bond. The dominant failure mechanisms affected by the interface bond dictated the mechanical properties of the sandwich plates in individual loading conditions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1004743821478
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 10
    Digitale Medien
    Digitale Medien
    Synthesis and structure of 2-methyl-6-oxo-7,8-dihydrospiro(benzo[h]-triazolo[3,4-b]quinazoline-7,1′-cyclopentane) (2000)
    Springer
    Chemistry of heterocyclic compounds 36 (2000), S. 574-578 
    Details
    ISSN: 1573-8353
    Schlagwort(e): benzo[h] quinazolines ; triazole ; condensation ; methylation ; cyclization
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The reaction of 4-amino-3-ethoxycarbonyl-1,2-dihydrospiro(naphthalene-2,1′-cyclopentane) with benzoyl isothiocyanate led to the corresponding 4-(N′-benzoylthioureido) derivative, the cyclization of which gave 4-oxo-2-thioxo-1,2,3,4,5,6-hexahydrospiro(benzo[h]qquinazoline-5,1′-cyclopentane). Condensation of the latter with hydrazine hydrate gave 2-hydrazino-3,4,5,6-tetrahydrospiro(benzo[h] quinazoline-5,1′-cyclopentane), which formed 6-oxo-1H-7,8-dihydrospiro(benzo[h] triazolo[3,4-b] quinazoline7,1′-cyclopentane) in reaction with orthoformice ester. Methylation of the product with methyl iodide led to its 2-methyl derivative.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02290848
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...