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
Filter
  • Bone conductivity  (2)
  • Bone permittivity  (2)
  • Lower Pleistocene  (2)
  • enhanced chemiluminescence  (2)
  • luminol  (2)
  • AIDS dementia complex  (1)
Datenquelle
Materialart
Erscheinungszeitraum
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Spongiform encephalopathy in a patient with acquired immune deficiency syndrome (AIDS) (1987)
    Springer
    Acta neuropathologica 74 (1987), S. 389-392 
    Details
    ISSN: 1432-0533
    Schlagwort(e): Acquired immune deficiency syndrome (AIDS) ; Creutzfeldt-Jakob disease ; Subacute spongiform encephalopathy (SSE) ; AIDS dementia complex
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The histological and ultrastructural findings of subacute spongiform encephalopathy (SSE) are described in the cerebral cortex and basal ganglia of a homosexual patient who died with acquired immune deficiency syndrome (AIDS). It is suggested that SSE, beside the diffuse AIDS leukoencephalopathy, might be another morphological substrate of the AIDS dementia complex.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00687217
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Dielectric properties of fluid-saturated bone: a comparison between diaphysis and epiphysis (1988)
    Springer
    Medical & biological engineering & computing 26 (1988), S. 313-316 
    Details
    ISSN: 1741-0444
    Schlagwort(e): Bone conductivity ; Bone impedance ; Bone permittivity ; Diaphysis ; Epiphysis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02447087
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Variation of the electric properties along the diaphysis of bovine femoral bone (1991)
    Springer
    Medical & biological engineering & computing 29 (1991), S. 441-446 
    Details
    ISSN: 1741-0444
    Schlagwort(e): Bone conductivity ; Bone impedance ; Bone permittivity ; Cortical bone ; Femoral diaphysis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Abstract A preliminary study is presented of the variability of the electric properties, in the axial, tangential and radial directions, as a function of position in the diaphysis of a femoral bovine bone. The measurements were carried out at three frequencies: 100 Hz, 10 kHz and 1 MHz. It is shown that both the conductivity and the permittivity exhibit significant variations along the diaphysis, and increase in magnitude towards the epiphyses. From this study, the variation of the electric properties cannot be clearly and directly ascribed to the longitudinal variability of the total volumetric fluid content of the bone. The results reflect the orthotropic nature of the electric properties, at any given location, and indicate a position-dependent tendency towards axis symmetry.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02441667
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Insights into the evolution of child growth from Lower Pleistocene humeri at Venta Micena (Orce, Granada province, Spain) (1999)
    Springer
    Human evolution 14 (1999), S. 63-82 
    Details
    ISSN: 1824-310X
    Schlagwort(e): Lower Pleistocene ; hominid child ; humerus ; evolution of prepubertal-pubertal development
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Well-defined human anatomical characteristics are present on humeral fragments of a child (VM-1960) and an adult (VM-3691) from early Lower Pleistocene sediments at Venta Micena: both have narrower medullary cavities than in AfricanHomo erectus/ergaster (KNM-ER 1808), and the child’s humeral shaft is longer than in recent 8-to-9-year-olds even though its muscle markings are less pronounced than theirs. We infer that exposure of growing children to high mechanical loading favoured Plio-Pleistocene skeletal evolution inHomo of humeral robusticity and elongation. Precocious childhood arm-bone development, occurring before pubertal growth-spurt increments in shoulder and arm muscularity, implies a different balance from today between prepubertal hormonal influences exerted on ossification (growth hormone and somatomedin C) and the adolescent gonadal hormones of our modern growth spurt which may have still been in the process of evolution by natural selection.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02436197
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Spanish late Pliocene and early Pleistocene hominid, palaeolithic and faunal finds from Orce (Granada) and Cueva Victoria (Murcia) (1999)
    Springer
    Human evolution 14 (1999), S. 29-46 
    Details
    ISSN: 1824-310X
    Schlagwort(e): Lower Pleistocene ; hominid ; palaeolithic
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract In SE Spain, recent excavations in the Orce basin and at Cueva Victoria indicate presence of both hominids and hominid activity from the Plio-Pleistocene boundary and early Lower Pleistocene.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02436195
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 6
    Digitale Medien
    Digitale Medien
    Enhancement and inhibition of luminol chemiluminescence by phenolic acids (1995)
    New York : Wiley-Blackwell
    Journal of Bioluminescence and Chemiluminescence 10 (1995), S. 175-184 
    Details
    ISSN: 0884-3996
    Schlagwort(e): Luminol ; enhanced chemiluminescence ; phenolic acid ; Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: We explored the behaviour of a series of phenolic acids used as enhancers or inhibitors of luminol chemiluminescence by three different methods to determine if behaviour was associated with phenolic acid structure and redox character. All the phenolic acids inhibited chemiluminescence when hexacyanoferrate(III) was reacted with the phenolic acids before adding luminol. The redox character of these compounds was clearly related to structure. When hexacyanoferrate(III)-luminol-O2 chemiluminescence was initiated by phenolic acid-luminol mixtures some phenolic acids behaved as enhancers of chemiluminescence, and others as inhibitors. We propose a mechanism to explain these findings. We found direct relationships between the redox character of the phenolic acids and the enhancement or inhibition of the chemiluminescence of the luminol-H2O2-peroxidase system and we propose mechanism to explain these phenomena.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/bio.1170100306
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 7
    Digitale Medien
    Digitale Medien
    Phenol derivatives as enhancers and inhibitors of luminol-H2O2-horseradish peroxidase chemiluminescence (1998)
    New York : Wiley-Blackwell
    Journal of Bioluminescence and Chemiluminescence 13 (1998), S. 75-84 
    Details
    ISSN: 0884-3996
    Schlagwort(e): luminol ; enhanced chemiluminescence ; phenol ; Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Systematic studies on phenol derivatives facilitates an explanation of the enhancement or inhibition of the luminol-H2O2-horseradish peroxidase system chemiluminescence. Factors that govern the enhancement are the one-electron reduction potentials of the phenoxy radicals (PhO•/PhOH) vs. luminol radicals (L•/LH-) and the reaction rates of the phenol derivatives with the compounds of horseradish peroxidase (HRP-I and HRP-II). Only compounds with radicals with a similar or greater reduction potential than luminol at pH 8.5 (0.8 V) can act as enhancers. Radicals with reduction potentials lower than luminol behave in a different way, because they destroy luminol radicals and inhibit chemiluminescence. The relations between the reduction potential, reaction rates and the Hammett constant of the substituent in a phenol suggest that 4-substituted phenols with Hammett constants (σ) for their substituents similar or greater than 0.20 are enhancers of the luminol-H2O2-horseradish peroxidase chemiluminescence. In contrast, those phenols substituted in position 4 for substituents with Hammett constants (σ) lower than 0.20 are inhibitors of chemiluminescence. On the basis of these studies, the structure of possible new enhancers was predicted. © 1998 John Wiley & Sons, Ltd.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
  • 8
    Digitale Medien
    Digitale Medien
    Assay of cholinesterase using a proenhancer of the luminol-H2O2-horseradish peroxidase reaction (1995)
    New York : Wiley-Blackwell
    Journal of Bioluminescence and Chemiluminescence 10 (1995), S. 285-289 
    Details
    ISSN: 0884-3996
    Schlagwort(e): Cholinesterase ; luminol ; pro-enhancer ; chemiluminescence ; Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: 2-Naphthyl acetate acts as a pro-enhancer of the luminol-H2O2-horseradish peroxidase reaction. Cholinesterase hydrolyses the bound acetyl group and produces 2-naphthol, and this compound is an enhancer of the chemiluminescent reaction. We studied the kinetics of chemiluminescent emission and the influence of 2-naphthyl acetate and cholinesterase enzyme concentration. The cholinesterase concentration versus chemiluminescence intensity maximum was linear for cholinesterase between 0 and 181 μU/mL, with a detection limit of 8 μU/mL and a relative standard deviation of 9.5% (n = 3), for a sample containing 90.67 μU/mL of cholinesterase.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/bio.1170100505
    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...