ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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
    Time change in the maximum of scattering intensity during spinodal decomposition (1989)
    s.l. : American Chemical Society
    Macromolecules 22 (1989), S. 4663-4664 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00202a053
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Nondiffusive velocity broadening in ion energy analyzer operation (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 308-314 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Fluctuations in plasma potential bring about an apparent broadening in the ion energy distribution when it is derived from the I-V characteristic of a retarding grid energy analyzer. This effect may have detrimental consequences for the prospects of applying energy analyzers to measure diffusion of the background distribution when electrostatic turbulence is present. The effect is demonstrated by inducing spatially homogeneous oscillations of the plasma potential in a beam-plasma system, applying a directional ion energy analyzer for beam detection. A theoretical analysis is presented, and quantitative agreement with the experimental results is obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341128
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The temporal evolution of a potential double layer formed by ion beam reflection in a magnetized plasma (1985)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 28 (1985), S. 712-715 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The temporal evolution of a potential double layer in a collisionless plasma is observed. The layer is formed by injecting a pulsed ion beam along converging magnetic field lines into a boundary drawing electron current and by applying a pulsed positive potential to the boundary in the presence of a continuous ion beam injection. The formation and destruction processes are reversible in the former case, whereas they are irreversible in the latter case. Diorect measurements of ion beam reflection estimated from spatial profiles of ion density are made at various times to facilitate the understanding of the temporal evolution of double layer formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865083
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Immunocytochemical localization of aromatase in rat testis (1985)
    Springer
    Histochemistry and cell biology 83 (1985), S. 401-404 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The immunocytochemical localization of armatase in the testes of young and adult rats was investigated by an indirect-immunofluorescent method using antihuman placental aromatase-II cytochrome P-450 antibody. In both young (1 and 2 weeks old) and adult rats, only the Leydig cells in the interstitial tissue showed a positive immunoreaction for aromatase, while the germ cells and Sertoli cells in the seminiferous tubule were entirely negative. In addition, electron microscopy revealed that the Leydig cells in the testes of young as well as adult rats have a well-developed smooth endoplasmic reticulum, mitochondria with tubulovesicular cristae, and a few lipid droplets; these structures being characteristic of steroid secretory cells. On the basis of these results, we suggest that estrogens are mainly synthesized in Leydig cells of the testes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00509199
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Immunocytochemical localization of calspectin (a non-erythroid spectrin-like protein) in thyroid glands of normal and TSH-treated rats (1987)
    Springer
    Histochemistry and cell biology 86 (1987), S. 537-539 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The localization of calspectin (fodrin, a nonerythroid spectrin-like protein), which is known to bind calmodulin and F-actin, was detected in the thyroid gland of normal and TSH-treated rats by means of light-microscopic immunocytochemistry. Calspectin was demonstrated in the cytoplasm of the follicle epithelial cells especially along the baso-lateral plasma membrane in normal rats. In TSH-treated animals, in addition to the baso-lateral plasma membrane region, the apical plasma membrane region of the follicle epithelial cells also showed positive reaction to the immunostaining. These results suggest that calspectin, in conjugation with calmodulin and actin, play a role in the secretory activities including reabsorption activity of colloid of the follicle epithelial cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00489544
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Immunocytochemical localization of 17β-hydroxysteroid dehydrogenase in porcine testis (1986)
    Springer
    Histochemistry and cell biology 85 (1986), S. 287-289 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The immunocytochemical localization of 17β-hydroxysteroid dehydrogenase (17β-HSD) in porcine testes was examined by applying an indirect-immunofluorescence method using an antiporcine testicular 17β-HSD antibody. Only the Leydig cells located in the interstitial tissue exhibited a positive immunoreaction for 17β-HSD: the germ cells and Sertoli cells located in the seminiferous tubules were entirely negative. These results suggest that, in porcine testis, the biosynthesis of testicular testosterone, the final step of which is the conversion of androstenedione to testosterone, takes place in the Leydig cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00493478
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Light and electron microscopic immunocytochemistry on the localization of 3β-hydroxysteroid dehydrogenase/isomerase in the bovine adrenal cortical cells (1988)
    Springer
    Histochemistry and cell biology 89 (1988), S. 35-39 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The localization of 3β-hydroxysteroid dehydrogenase/isomerase (3β-HSD) was studied in bovine adrenal glands by light as well as electron microscopic immunocytochemistry, using anti-bovine adrenal 3β-HSD antibody. With light microscopy the cytoplasm of the glomerulosa cells was weakly immunostained, while that of the fasciculata-reticularis cells was intensely immunostained though both the capsular connective tissue cells and the medullary cells were entirely negative for this reaction. Electron microscopic immunocytochemistry revealed that the positive reaction products for 3β-HSD were present on the membrane of smooth endoplasmic reticulum of the cortical cells, especially that of the fasciculata and reticularis cells. Other cell organelles such as mitochondria and Golgi apparatus were entirely negative. The present results indicate that 3β-HSD is present in the membrane of smooth endoplasmic reticulum of bovine adrenal cortical cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00496581
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Ultrastructural and immunohistochemical studies on the zona-reticularis cells of the adrenal cortex of normal and 3-methylcholanthrene-treated mice (1985)
    Springer
    Histochemistry and cell biology 83 (1985), S. 207-211 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The drug-metabolism activity of adrenocortical cells of normal and 3-methylcholanthrene (MC)-treated ddY mice were examined ultrastructurally and immunohistochemically. Immunoblot analyses performed prior to immunohistochemistry revealed the presence of a protein — possible equivalent to cytochrome P-450 found in the liver microsomes of MC-treated male rats — in the adrenal homogenate of MC-treated female mice. Immunohistochemistry demonstrated the presence of a cytochrome-P-450-like protein in the adrenal-cortical cells (especially in the zona-reticularis cells) of MC-treated female mice; at the same time, a remarkable increase in the amount of SER in these cells was observed by electron microscopy. These findings suggest that cells of the mouse adrenal gland, particularly those of the zona-reticularis, might participate not only in steroid biosynthesis but also in some sort of drug metabolism (detoxication). In addition, there might be a sex-related difference in ddY mice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00953985
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Further immunocytochemical study on the localization of aromatase in the ovary of rats and mice (1989)
    Springer
    Histochemistry and cell biology 90 (1989), S. 413-416 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The precise localization of estrogen biosynthesis in the ovary of rats and mice were immunocytochemically studied using new antisera against aromatase cytochrome P-450. The positive reaction for aromatase was detected mainly on the granulosa cells of large, apparently preovulatory follicles. In addition, the cells of some corpora lutea showed very weak positive reaction but most corpora lutea were negative to the staining. Those cells such as the granulosa cells of smaller follicles, the theca interna cells, the interstitial gland cells, oocytes, peritoneal epithelial cells were entirely negative. These results indicate that in the ovary of rats and mice, the granulosa cells of preovulatory follicles are the main site for synthesis of estrogen from androgen which is provided by the theca interna cell and the interstitial gland cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00494352
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Semi-empirical theory of the viscosity of moderately dilute polymer solutions (1986)
    Springer
    Rheologica acta 25 (1986), S. 487-493 
    Details
    ISSN: 1435-1528
    Keywords: Semidilute polymer solution ; viscosity ; molecular-weight dependence ; theta temperature ; polystyrene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract The viscosityη of moderately dilute polymer solutions is formulated on the postulates that in this concentration regionη is governed by the domain volume per polymer segment and the “noddle effect” due to entangling chains. The former is treated semi-molecular theoretically, and the latter entirely phenomenologically. All the parameters involved in the theory can be estimated from appropriate dilute solution data as well as the asymptotic molecular-weight dependence ofη at different concentrations. It is shown that the theory describes almost quantitatively the experimental data obtained by Hamada and Adam and Delsanti for polystyrene in benzene and cyclohexane. Part of these data reveals the breakdown of the semidilute solution approximation used in the theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01774398
    Location Call Number Expected 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...