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
    Gleichstromschleife vor zweihochpermeablen Kugeln (1977)
    Springer
    Electrical engineering 59 (1977), S. 311-321 
    Details
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Contents The magnetic field of a direct-current loop of arbitrary shape in the presence of two highly permeable spheres is calculated. In the method described, a small element of the loop is imaged by the spheres. This allows for a threedimensional vector calculation of the scalar potential and the vector potential. As a practical example to the derived laws, the axially symmetrical field of a circular loop in front of two highly permeable spheres is calculated, and the lines of the magnetic induction are mapped.
    Notes: Übersicht Es wird das magnetische Feld in der Umgebung von zwei hochpermeablen Kugeln und einer Gleichstromschleife beliebiger Kontur berechnet. Die dreidimensionale Behandlung erfolgt bei Vermeidung von Orthogonalentwicklungen in vektorieller Form durch Einführung eines Verfahrens zur Spiegelung eines Stromelementes. Hierfür werden Skalar- und Vektorpotential der Spiegelquellen in geschlossener Form angegeben. Als praktisches Beispiel wird das Feldbild der rotationssymmetrischen Anordnung einer Kreisschleife vor zwei hochpermeablen Kugeln berechnet und graphisch dargestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01578218
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Predominant cutaneous infiltration by OKT6- and OKT8-positive cells in a case of Sézary syndrome (1983)
    Springer
    Archives of dermatological research 275 (1983), S. 168-174 
    Details
    ISSN: 1432-069X
    Keywords: Sézary syndrome ; Monoclonal antibodies ; T lymphocytes ; Langerhans cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Using an immunoperoxidase (skin biopsy) and an immunofluorescence (peripheral blood, bone marrow punctate) technique, and monoclonal antibodies raised against peripheral mature lymphocytes, T helper subsets, T suppressor subsets, and Langerhans cells, we found a predominant dermal infiltration with lymphocytes of the suppressor phenotype and a predominant epidermal infiltration with Langerhans cells in a patient with Sézary syndrome (cutaneous T-cell lymphoma, CTCL). Repeated peripheral blood examinations showed an increased percentage of lymphocytes of the helper phenotype. A bone marrow examination revealed a ratio of suppressor/helper subsets of 1:4. The findings in the skin seem to be inconsistent with most of the results of previous studies in patients with CTCL; the significance of these findings is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00510048
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Repair of parietal hernia by overlapping onlay reinforcement or “gap-bridging” replacement polypropylene mesh: Preliminary results (2000)
    Springer
    Hernia 4 (2000), S. 29-32 
    Details
    ISSN: 1248-9204
    Keywords: Incisional hernia ; Umbilical hernia ; Polypropylene mesh repair ; Onlay technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In an open prospective observational study, all patients presenting with abdominal wall hernias since January 1996 underwent polypropylene mesh repair. The patient population comprised 15 male and 22 female patients (aged 24 to 86 years, median 60.5 years) with 22 primary and 4 recurrent incisional hernias and 8 primary and 3 recurrent umbilical hernias, respectively. Premusculo-fascial mesh onlay followed direct apposition of the myoaponeurotic hernial rim in 24 patients and was fixed ≪tension free≫ bridging the defect with hernial sac interposition in 13 patients. In 2 patients subcutaneous wound sepsis, and in one skin- and subcutaneous slough, necessitated debridement and open wound treatment with subsequent uneventful secondary wound healing. 31 patients followed up for more than 6 months were assessed clinically and sonographically in October 1998 [8 patients after 8 months (range 6–9) and 23 patients after 19 months (range 12–33)]. The main complaint was neuralgiform pain at the mesh periphery in 8 patients. No recurrence was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01230589
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    A new class of collective excitations: Exciton strings (1996)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 104 (1996), S. 9283-9291 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Optical excitation in a strongly neutral quasi-one-dimensional mixed-stack charge-transfer solid results in an exciton state, in which the electron and the hole are bound by electrostatic Coulomb interactions that are large compared to the one-electron hopping. We present a joint theoretical–experimental demonstration of a new class of collective excitations, multiexcitons or exciton strings, consisting of a string of several (more than two) bound excitons, in a prototype neutral charge-transfer solid. The stability of the multiexciton states arise from the combined effects of one dimensionality and strong Coulomb interactions. Theoretically, we show that in narrow band one-dimensional semiconductors with long range Coulomb interactions, the occurrence of stable 2-exciton string (biexciton) necessarily implies stable higher multiexcitons. Experimentally, evidence for the multiexciton strings is demonstrated by femtosecond pump–probe spectroscopy of anthracene pyromellitic acid dianhydride. Excellent qualitative agreement is found between the calculated and the measured differential transmission spectra. Photoinduced absorptions to the 2-exciton string at low pump intensity and to the 3-exciton string at high pump intensity are observed, in agreement with the theory of excited state absorption. The 2-exciton string is confirmed also by a direct two-photon absorption measurement. The binding energies of the 2-exciton and the 3-exciton strings are obtained from the experimental data. The larger binding energy of the 3-exciton is in agreement with theory. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.471710
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Exciton-to-biexciton transition in quasi-one-dimensional organics (1996)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 104 (1996), S. 9292-9296 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: In the previous paper we demonstrated novel multiexcitons in a neutral mixed-stack charge-transfer solid. The lowest multiexciton, the biexciton, has recently been of interest also in the context of quasi-one-dimensional organic materials that are different from the mixed-stack solids. The nature and strength of the optical transition from the exciton to the two-exciton states is of importance in understanding photoinduced absorption as well as two-photon absorption. We show that within the diverse theoretical models that describe these different classes of materials, the excited state absorption from the optical exciton to the two-exciton states changes in a fundamental way upon the formation of the biexciton. The identical nature of the exciton absorption within these models is a consequence of one dimensionality. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.471707
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Ultrafast transient gain in type II multiple quantum wells (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 511-513 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gain for less than one picosecond is observed in a type II GaAs/AlAs multiple quantum well and compared to a type I multiple quantum well under the same conditions. A sophisticated three-beam experiment is used to unambiguously determine the internal gain of the samples. This method is capable of measuring very small amounts of gain and applicable to a wide variety of situations. The observations are well explained by a simple carrier scattering model. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.116383
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Intracavity spectroscopy in vertical cavity surface-emitting lasers for micro-optical-mechanical systems (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 1517-1519 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We demonstrate lasing action in a novel microcavity laser device based on vertical cavity surface-emitting laser technology. This laser can be used for intracavity spectroscopy, high contrast imaging of small (10 μm) structures, and is well suited for use in micro-optical mechanical systems for analysis of particles or fluids. Here, we investigate spectra of intracavity polystyrene spheres. Lasing threshold, single-mode operation, and multimode operation are all studied. Transverse mode separation in the multimode regime is found to be effective for sizing of the spheres.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.117990
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Transient photoinduced absorption in (AlxGa1−x)0.5In0.5P fractal quantum well heterostructures (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 966-968 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Picosecond photoinduced absorption measurements have been performed on four different (AlxGa1−x)0.5In0.5P fractal quantum well heterostructures. The results of these measurements reveal that, at early times following pulsed excitation, the carriers remain near the surface layer in which they were photogenerated, and populate the higher lying branches of the V-shaped fractal structure. With increasing time, the carrier population relaxes toward the lowest energy, central wall. The rate at which the relaxation occurs is governed by the characteristic layer of widths of the fractal structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.117097
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Comparison of optical nonlinearities of type II and type I quantum wells (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 259-261 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have performed low-temperature femtosecond pump and probe experiments on GaAs/AlAs type II and GaAs/AlGaAs type I multiple quantum wells of similar well sizes. The measurements are analyzed using a many-body theory appropriate for both types of systems. It is found that the type I and type II nonlinearities are very similar at early times after excitation. However, the very fast (〈1 ps) Γ to X electron scattering in the type II samples causes pronounced differences at later times, allowing the observation of hole relaxation in the type II samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105614
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Electron beam proximity printing
    Amsterdam : Elsevier
    Microelectronic Engineering 9 (1989), S. 191-193 
    Details
    ISSN: 0167-9317
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-9317(89)90045-2
    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...