Download Quantitative Methods in Morphology / Quantitative Methoden by Ewald R. Weibel, Hans Elias (auth.), Prof. Dr. Ewald R. PDF

By Ewald R. Weibel, Hans Elias (auth.), Prof. Dr. Ewald R. Weibel, Prof. Dr. Hans Elias (eds.)

Stereologic thoughts start to play an expanding function in biologic morphology, relatively there the place correlation of constitution and serve as on a quantitative foundation is sought. those strong equipment were in use for a few years - in part even for plenty of many years - in geology, mineralogy and metallurgy, whereas makes an attempt to introduce them into histology have remained quite infrequent till many years in the past. to be able to stimulate dialogue between anatomists approximately stereo good judgment tools the foreign Society for Stereology, an interdisciplinary society, prepared a Sym­ posium on Quantitative tools in Morphology which came about on August 10, 1965 within the framework of the 8th overseas Congress of Anatomists in Wiesbaden, Germany. The papers awarded at this symposium are released during this quantity in a little prolonged shape. the various papers of this quantity are of quite really expert nature and presume a uncomplicated wisdom of stereology. the 1st bankruptcy on normal stereological rules has accordingly been significantly prolonged and brief introductory evaluate paragraphs were extra to a couple next chapters to aid those people who are now not but conversant in this new box in realizing the extra really good unique articles. lengthy dialogue classes shaped an important a part of the symposium. even though, they have been carried out very informally and as a result it is going to no longer were ecocnomic to breed them in extenso, quite because the significant result of dialogue were integrated by means of the authors into the extended manuscripts provided here.

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Additional resources for Quantitative Methods in Morphology / Quantitative Methoden in der Morphologie: Proceedings of the Symposium on Quantitative Methods in Morphology held on August 10, 1965, during the Eigth International Congress of Anatomists in Wiesbaden, Germany

Example text

1963; WEIBEL, 1963). 1, particularly when comparisons between control and experimental materials are sought. Caution is indicated though, when an experiment may have induced a change in the size distribution; this can be tested by determining the variance of the size distribution of profiles in both control and experimental material (BACH, 1963). Recently, LOUD, BARANY and PACK (1965) have developed a method for determining the number of cylindrical structures N vc from measurements made on their profiles on random sections.

Die GraBen fJi,i schlagt man wieder in einer Tabelle nach (Tabelle 3). 6)d dar. Durch sie wird eine stetige Verteilung der Kugeln besser approximiert, allerdings liegt in der Einfiihrung des Integralmittelwertes eine Fehlerquelle, die bedingt, daB die Klasseneinteilung nicht zu grob gewahlt werden darf. Ais Anhaltspunkt fiir die zu wahlende Klasseneinteilung kann die Faustformel kN R>! 3,76 (N _1)°,4 dienen, N ist der Stichprobenumfang, kN die Zahl der Klassen, in die die Stichprobe zu unterteilen ist.

Internat. ~ 13. August 1965. Analysis of SIze distribution of fat cells In adipose tissue at different ages F. WASSER~IANN, P. ELIAS and SYLVANCS TYLER * ** Summary The analysis of size distribution of fat droplets in adipose tissue of the rat reveals that the originally fine droplets grow with age. In old age small droplets reappear. This is interpreted as being related to the obesity developing in senile rats. Zusammenfassung Die Analyse der GroGenverteilung der Fetttropfchen im Fettgewebe der Ratte ergibt, daG die ursprunglich feinen Tropfchen mit dem Alter an GraGe zunehmen.

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