Design of a growth model for yeast

The study of the cell cycle of a yeast strain made it possible to define two parameters:T, the time elapsing between the appearance of two consecutive buds on a mother cell, and Θ, the time elapsing between the appearance of a bud and the beginning of the first mitotic cycle. The influence of these two parameters on the growth rate of the strain is studied.     

Die biologischen Grundlagen der menschlichen Mehrlingsforschung

Ohne ZusammenfassungMit 4 Figuren und 10 Tabellen     

Die Wuchsstoffleitung in der Pflanze I

Zusammenfassung In Blättern vonColeus-rot und in Kotyledonen vonCucumis sativa wird künstlich durch die Epidermis zugeführter Wuchsstoff (Heteroauxin) apikalwärts geleitet, wenn der direkte Abfluß nach der Mittelrippe unterbunden ist. Daraus folgt, daß die Wuchsstoffleitung in der Pflanze keine streng polare Erscheinung ist, genau so wenig, wie der Transpirationsstrom oder der Strom der Assimilate streng polar fließen.Mit 11 Textabbildungen (16 Einzelbildern).Mit Unterstützung der Deutschen Forschungsgemeinschaft und der William G. Kerckhoff-Stiftung zu Bad Nauheim.     

An improved glucoseoxidase--peroxidase-coupled assay for -fructofuranosidase activity

An improved glucoseoxidase-peroxidase-coupled assay for the determination of β-fructofuranosidase activity is described. The method makes use of the double effect of Tris (2-amino-2-hydroxymethylpropane-1,3-diol) as an inhibitor of both invertase and contaminating glucosidases. The method is very sensitive and is suitable for routine determinations. The total time needed for a single analysis is less than half an hour.     

Dominating species of entomophilous ascomycetes anamorphs in West Siberia,Primorsky krai,and Kyrgyzstan

The paper studies mycobiota of the dead insects in West Siberia, Primorsky krai, and Kyrgyzstan. Ascomycetes anamorphs of 13 genera are revealed. In all regions Beauveria bassiana (Bals.-Criv.) Vuill. dominated comprising on average 68% of the total number of isolates. The fungus hosts list the insects of 7 orders and 32 families with Coleoptera, Lepidoptera, and Hemiptera dominating. The rarely found entomopathogens include Tolypocladium inflatum Gams (primarily on Lepidoptera), Metarhizium anisopliae (Metschn.) Sorokin (on Coleoptera). The mortality rate of the insects due to micromycetes is observed mainly on enzootic level. The study of the pathogenic properties of the dominating species (B. bassiana) show the absence of specificity of its environmental isolates for a number of representatives of Orthoptera, Lepidoptera, Coleoptera, and Diptera.     

On the anatomical definition of arterial networks in blood flow simulations: comparison of detailed and simplified models

Biomechanics and Modeling in Mechanobiology - The goal of this work is to assess the impact of vascular anatomy definition degree in the predictions of blood flow models of the arterial network. To...