ZIB

Treffer pro Seite

Treffer 1 - 6 | 6 Treffer

Sortierung

Digitale Medien

A simple method for elution of IgA deposits from the skin of patients with dermatitis herpetiformis (1989)

Jones, P. ; Kumar, V. ; Beutner, E. H. ; [weitere]

Springer

Archives of dermatological research 281 (1989), S. 406-410

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-069X

Schlagwort(e): Dermatitis herpetiformis ; Immunoglobulins ; Complement components ; Elution

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary To better understand the role of autoimmunity in the pathogenesis of dermatitis herpetiformis, linear IgA bullous dermatosis or other skin disorders, the antigenic specificity of the immune reactants bound in vivo in the skin must be identified. In order to do so, one must first be able to elute these immune reactants from the skin. We describe here a simple method of eluting not only specifically bound IgG, but also IgA and other immunoglobulins and complement components from skin biopsy material. The method involves cutaneous washing of the entrapped serum proteins in PBS pH 7 and pH 5 buffers followed by specific immunoglobulin elutions at pH 3 and 2. The IgA deposits which could not be removed by this treatment were eluted by a combination of low pH (0.5 M citrate pH 2) and a chaotropic agent (2 M NaCl). The relative concentration of IgA in eluates when quantitated by fluoroimmunoassay were three-to five-fold higher in dermatitis herpetiformis skin biopsy specimens, than in eluates of bullous pemphigoid or normal skin biopsy specimens.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00455326

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

Some aspects of cleavage in Pomatoceros triqueter eggs (1972)

Gwynn, I. ; Jones, P. C. T.

Springer

Cell & tissue research 123 (1972), S. 486-495

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-0878

Schlagwort(e): Pomatoceros triqueter ; Cytokinesis ; Surface folding ; New surface membrane ; Ultrastructure

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Summary The first cleavage division of Pomatoceros triqueter eggs is described. Time-lapse microcinematographic and electron microscopic studies revealed that, prior to division, the plasma membrane was folded into pleats. These were not present after division. This fact pointed to an unfolding of the plasma membrane which enabled it to cover the increased surface area resulting from cleavage. It is suggested that the pre-cleavage folds are derived from the membranes of the cortical granules, which continue releasing their contents into the perivitelline region following fertilization and first division. Filamentous material in the form of a band was present subjacent to the plasma membrane in the region of the furrow. The individual filaments of this band measure 5 to 7 nm in cross section, the dimensions being similar to those described for other kinds of dividing cells.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00335544

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

A positron annihilation lifetime study of isothermal structural relaxation in bisphenol-A polycarbonate (1988)

Hill, A. J. ; Jones, P. L. ; Lind, J. H. ; [weitere]

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 26 (1988), S. 1541-1552

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0887-624X

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Positron annihilation lifetime spectroscopy has been used to study the isothermal relaxation response of compression molded bisphenol-A polycarbonate at temperatures of 263, 273, and 303 K. The temperature dependence of both the lifetime and intensity of the ortho-Positronium (o-Ps) pickoff component is discussed in terms of ductile-to-brittle transition behavior and free volume theory. An additive exponential model and the Williams-Watt model were used to analyze the relaxation as a function of temperature and provided results consistent with the anticipated molecular mobility of polycarbonate at sub-Tg temperatures.

Zusätzliches Material: 8 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pola.1988.080260605

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

High spectral and angular resolution studies of sputtered zirconium atoms (1989)

Cullin, D. Wm. ; Moryl, J. E. ; Jones, P. L.

Chichester [u.a.] : Wiley-Blackwell

Surface and Interface Analysis 14 (1989), S. 607-610

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0142-2421

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Physik

Notizen: We present the first results from a new apparatus for high spectral and angular resolution studies of sputtered neutral species. The sputtering experiments employ laser-induced fluorescence and a compact fiber-optic-based detection system to yield state-specific angular distributions for the sputtered atom flux. The angular resolution is of the order of 3° and a 260 MHz residual Doppler shift is estimated for the observed atomic transitions. The angular distribution for ground-state zirconium atoms shows clear deviations from the cosine dependence expected from linear cascade theory when sputtered by 1.5 keV Ar+ ions incident at 60° from the surface normal. The peaking of the distribution in the forward direction suggests that a significant fraction of the atoms is ejected by a direct mechanism.

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/sia.740141008

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

Electron-stimulated desorption of neutrals from 6063 aluminum - velocity distributions detected by 193 nm non-resonant laser ionizationThis paper has been authored by a contractor of the U.S. Department of Energy, BES-Materials Sciences, under contract No. W-31-109-ENG-38. Accordingly, the U.S. Government retains a non-exclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes. (1989)

Young, C. E. ; Whitten, J. E. ; Pellin, M. J. ; [weitere]

Chichester [u.a.] : Wiley-Blackwell

Surface and Interface Analysis 14 (1989), S. 647-655

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0142-2421

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Physik

Notizen: Electron-stimulated desorption of neutrals from methanol-dosed 6063 aluminum alloy has been monitored by laser ionization at 193 nm wavelength. Primary electron energies were in the range 1-3 keV. Time-of-flight spectra for the neutral desorbate were characterized by a low value of the peak velocity (250 m s-1) and a non-Boltzmann form of the distribution. Neutral desorption was ascribed to the parent methoxy (CH3O) species, based on mass spectrometry of the laser-ionization fragmentation pattern as a function of intensity. Ionic desorption was dominated by H+, which was observed to have kinetic energy peaked at ∼3 eV. Approximate estimates of neutral and ion yields were made, based on ion-optical modeling of apparatus transmission characteristics.

Zusätzliches Material: 7 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/sia.740141013

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

Reaktionen von (η2-Ethen)bis(triphenylphosphan)-platin(0) mit dimerem Hexafluorthioaceton Darstellung und Struktur von Platinacyclopentan- und -cyclopropanderivaten (1986)

Jones, P. G. ; Roesky, H. W. ; Gries, Th. ; [weitere]

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 542 (1986), S. 46-52

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0044-2313

Schlagwort(e): Chemistry ; Inorganic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Beschreibung / Inhaltsverzeichnis: Reactions of (η2-Ethene)bis(triphenylphosphane)platinum(0) with Dimeric Hexafluorothioacetone. Preparation and Structure of Platina Cyclopentane and Cyclopropane DerivativesThe five-membered (CS)2Pt ring 1 was obtained by the reaction of 2, 2, 4, 4-tetrakis(trifluoromethyl)-1,3-dithietane and (η2-ethene)bis(triphenylphosphane)platinum(0) at low temperatures. 1 is converted at its melting point to the three-membered CSPt ring derivative 2, with elimination of one molecule of hexafluorothioacetone. 2 is also formed directly when the reaction is conducted at temperatures above +30°C. 2 was characterized by an X-ray Structural analysis.

Notizen: Der fünfgliedrige (CS)2Pt-Cyclus 1 kann aus 2, 2, 4, 4-Tetrakis(trifluormethyl)-1,3-dithietan und (η2-Ethen)bis(triphenylphosphan)-platin(0) bei tiefer Temperatur erhalten werden. 1 wandelt sich an seinem Schmelzpunkt unter Abspaltung eines Moleküls Hexafluorthioaceton in den um zwei Ringglieder reduzierten CSPt-Ring 2 um, der auch auf direktem Wege durch Umsetzen des Dithietans bei Temperaturen oberhalb von +30° zugänglich ist. 2 konnte erstmals durch eine Kristallstrukturbestimmung charakterisiert werden.

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/zaac.19865421108

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Treffer 1 - 6 | 6 Treffer