Bibliothek

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
    Optical properties of epitaxial ZnMnTe and ZnMgTe films for a wide range of alloy compositions (2002)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 91 (2002), S. 2859-2865 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Zn1−xMnxTe and Zn1−xMgxTe ternary wide-gap semiconductor alloys were grown by molecular beam epitaxy on (100) GaAs substrates over a wide range of compositions (0≤x≤0.75 and 0≤x≤0.67, respectively). Values of the band gap were measured by photoluminescence at 12 K, and by optical reflectivity at room temperature. The wavelength dependence of the indices of refraction n of these ternary systems was also measured for these alloys at wavelengths below their respective energy gaps. The measurements were performed using a combination of the prism coupler method and reflectivity. Compilation of these results allows us to establish a set of empirical parameters for the two alloy families, that can be used to calculate the index of refraction for an arbitrary alloy composition and arbitrary wavelength. It is interesting that the values of n show a surprisingly linear dependence on the corresponding energy gaps for both these alloy systems. © 2002 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1448402
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Enhancement of magnetic coercivity and ferromagnetic transition temperature by proximity effects in the GaMnAs–ZnMnSe multilayer system (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 2414-2416 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We have investigated the degree to which the ferromagnetic properties of GaMnAs can be modified by the proximity of a Mn-based magnetic layer in which the Mn–Mn interactions are aniferromagnetic. Epitaxial GaMnAs capped with ZnMnSe was used for this purpose. We observed that the presence of the ZnMnSe overlayer leads to a dramatic modification of the coercive field of GaMnAs, which remains high almost up to the Curie temperature. The presence of ZnMnSe overlayers also leads to a significant increase in the Curie temperature of GaMnAs, as compared to "bare" GaMnAs. © 2001 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1409587
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Cerebral Thrombosis And Microcirculation Of The Rat During The Oestrous Cycle And After Ovariectomy (2002)
    Melbourne, Australia : Blackwell Science Pty
    Clinical and experimental pharmacology and physiology 29 (2002), S. 0 
    Details
    ISSN: 1440-1681
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 1. The effects of oestrogen on thrombogenesis and the cerebral microcirculation of the female rat were studied during the oestrous cycle and after ovariectomy.2. Serum levels of oestradiol (E2) and plasma concentrations of nitric oxide (NO) metabolites were significantly greater at pro-oestrus than at dioestrus. Blood vessel diameter, mean red cell velocity, wall shear rate and blood flow at pro-oestrus were significantly higher than at dioestrus. Thrombotic tendency, assessed using a He–Ne laser-induced thrombosis model, was significantly decreased at pro-oestrus compared with dioestrus.3. The long-term deprivation of oestrogen by ovariectomy significantly depressed serum levels of E2 and plasma concentrations of NO metabolites. Thrombotic tendency was significantly increased 4 weeks after ovariectomy. Vessel diameter, mean red cell velocity, wall shear rate and blood flow in pial arterioles were significantly reduced after ovariectomy.4. Exogenous administration of oestrogen (17β-oestradiol) after surgery reversed the increased thrombotic tendency mediated by ovariectomy.5. These results strongly indicate that oestrogen mediates beneficial effects on the cerebral microcirculation and moderates cerebral thrombotic mechanisms in the female rat.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1440-1681.2002.03600.x
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Dose-escalation study of CHOP with or without prophylactic G-CSF in aggressive non-Hodgkin's lymphoma (2000)
    Springer
    Annals of oncology 11 (2000), S. 1241-1247 
    Details
    ISSN: 1569-8041
    Schlagwort(e): cyclophosphamide ; dose intensity ; doxorubicin
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Background:CHOP is accepted as the gold standard for first linechemotherapy of aggressive non-Hodgkin's lymphoma (NHL). A dose-escalationstudy of CHOP was conducted to determine the maximal tolerated dose (MTD) andtoxicity profile of CHOP at three-week intervals with or without prophylacticrecombinant human granulocyte colony-stimulating factor (rHuG-CSF) in patientswith aggressive NHL. Patients and methods:The doses of drugs were escalated from 50mg/m2 to 70 mg/m2 for doxorubicin and from 750mg/m2 to 2250 mg/m2 for cyclophosphamide, withconventional doses of vincristine and oral prednisolone. After the MTD wasdetermined without rHuG-CSF, dose escalation was conducted with prophylacticrHuG-CSF. Results:Thirty-three patients with NHL were enrolled into thestudy. The MTD without prophylactic rHuG-CSF was 70 mg/m2 ofdoxorubicin and 1250 mg/m2 of cyclophosphamide, with neutropeniaas a dose-limiting toxicity. The MTD with prophylactic rHuG-CSF was 70mg/m2 of doxorubicin and 2250 mg/m2 of cyclophosphamide.The overall response rate was 100% (76% complete response and24% partial response). Progression-free survival and overall survivalat five years were 45% and 66%, respectively. Conclusions:Significant dose escalation of doxorubicin andcyclophosphamide was feasible with prophylactic rHuG-CSF. The efficacy ofdose-escalated CHOP should be compared with that of standard CHOP.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1008361513544
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Mechanical Properties of Bioactive Titanium Metal Prepared by Chemical Treatment (2000)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 192-195 (Sept. 2000), p. 227-230 
    Details
    ISSN: 1013-9826
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/45/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.192-195.227.pdf
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 6
    Digitale Medien
    Digitale Medien
    Lobenzarit disodium-induced hyperkalemia successfully treated with fludrocortisone acetate (2000)
    Springer
    Clinical and experimental nephrology 4 (2000), S. 67-70 
    Details
    ISSN: 1437-7799
    Schlagwort(e): Key words Lobenzarit disodium ; Hyperkalemia ; Tubulointerstitial nephritis ; Fludrocortisone acetate
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A 65-year-old woman was admitted to our hospital because of hyperkalemia and renal dysfunction. Three months after she had been treated with lobenzarit disodium, a disease-modifying anti-rheumatic drug, her serum potassium and blood urea nitrogen levels rose. Neither calcium polystyrene sulfonate nor furosemide was effective in treating the hyperkalemia. On admission, she did not show metabolic acidosis and her creatinine clearance was 41 ml/min. Urinalysis results and urinary β2-microglobulin and N-acetyl-β-D-glucosaminidase concentrations were normal. Her pituitary and adrenal functions and renin-aldosterone axis were also normal. A renal biopsy specimen demonstrated almost normal glomeruli and almost normal proximal tubules. On the other hand, the distal tubules demonstrated patchy atrophy with an increase in the interstitium and an infiltration of mononuclear cells. Fludrocortisone acetate, a synthetic mineralocorticoid, was effective in treating her hyperkalemia. The impaired responsiveness of the distal nephron to mineralocorticoid may have been the pathophysiological mechanism in this patient.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s101570050065
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 7
    Digitale Medien
    Digitale Medien
    Lack of association between atopic asthma and polymorphisms of the histamine H1 receptor, histamine H2 receptor, and histamine N-methyltransferase genes (2000)
    Springer
    Immunogenetics 51 (2000), S. 238-240 
    Details
    ISSN: 1432-1211
    Schlagwort(e): Key words Histamine H1 receptor ; Histamine H2 receptor ; Histamine N-methyltransferase ; Polymorphism ; Atopic asthma
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002510050037
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 8
    Digitale Medien
    Digitale Medien
    Present and future government- and industry-supported imaging research in Japan (2000)
    Springer
    European radiology 10 (2000), S. S406 
    Details
    ISSN: 1432-1084
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/PL00014107
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 9
    Digitale Medien
    Digitale Medien
    Comments on Heterogeneous Nucleation in Helium (2000)
    Springer
    Journal of low temperature physics 120 (2000), S. 293-314 
    Details
    ISSN: 1573-7357
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We first recall some basic ideas on homogeneous and heterogeneous nucleation. We then reconsider the heterogeneous nucleation of solid helium from liquid helium in the presence of walls. Recent experiments by Ruutu et al. demonstrate that the presence of walls drastically reduces the energy barrier for such “heterogeneous” nucleation events, although walls are usually more favorable to the liquid phase. In order to explain this reduction, we propose a simple model based on the unpinning of an already existing interface. In the light of such results, we then reconsider the nucleation of the B-phase of superfluid helium 3 from its A-phase. We propose a model where the B-phase nucleation is thermally activated on walls, without need of cosmic rays.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1004669102741
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 10
    Digitale Medien
    Digitale Medien
    Signature inversion in the yrare band of 119Xe (2002)
    Springer
    The European physical journal 14 (2002), S. 13-16 
    Details
    ISSN: 1434-601X
    Schlagwort(e): PACS. 21.10.Re Collective levels – 23.20.Lv Gamma transitions and level energies – 27.60.+j 90 ?A? 149
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract: Excited states of the 119Xe nucleus have been studied by using in-beam γ-ray spectroscopy with the 107Ag ( 16O, p3n) 119Xe fusion-evaporation reaction at a beam energy of 85 MeV. The level scheme of 119Xe has been derived from γ-γ coincidence and γ-γ angular correlation analyses. We have, for the first time, established the second negative-parity favored and unfavored states built on the 11/2- state, namely the yrare rotational bands in 119Xe. In contrast to the behavior of the yrast bands where the favored states are lying lower in energy, the yrare favored states were observed to lie above the unfavored band. Such a signature inversion in 119Xe is changed to be normal at I = 12?.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1140/epja/iepja1438
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...