Proceedings of the Ninth Annual Biochemical Engineering Symposium

This report presents the proceedings of the Biochemical Engineering Symposium held at Kansas State University, April 28, 1979. Since a number of the contributions will be published in detail elsewhere, only brief reports of each contribution are included here. Requests for further information on work at Iowa State University should be directed to Dr. Peter J. Reilly; at Colorado State University to Drs. V. G. Murphy and A. R. Moreira, and at Kansas State University to Drs. L. T. Fan and L. E. Erickson. ContentProperties of a Homogeneous Xylobiohydrolase from Aspergillus niger, Mary M. Frederick, Iowa State University Kinetic Studies on the Enzymatic Hydrolysis of Cellulose–Absorption and Desorption of Cellulase onto Cellulose and the Behavior of Absorbed Cellulase, Yong-Hyun Lee and L. T. Fan, Kansas State University Properties of a Homogeneous Endo-Xylanase from Aspergillus niger, Ricardo Fournier A., Iowa State University Solid State Fermentation of Manure Fibers, D. C. Ulmer, Colorado State University Analysis and Consistency of Experimental Data for Microbial Growth on Renewable Resources, B. 0. Solomon, Kansas State University Biochemical Mechanisms of Enzyme Regulation, Frederick A. Blum, Colorado State University An Evaluation of Cellulose Pretreatments for Enzymatic Hydrolysis, David H. Beardmore, Kansas State University Use of Immobilized 8-Amylase/Glucoamylase Mixtures to Produce High Maltose Syrups, Carol G. Bohnenkamp, Iowa State University Effect of Viscosity on Bubble Behavior in an Airlift Fermentor, Vasanti Deshpande, Kansas State University

Longitudinal Study of Tree Swallows

Tree swallows (Tachycineta bicolor) are the most widely distributed of the Tachycineta species, extending from northern Alaska and Canada to the southern United States. They are semi-colonial, secondary cavity nesters, primarily aerial insectivores, and migratory throughout most of their range. Tree swallows are a widely used model organism for avian ecologists and environmental physiologists because their life history lends itself to longterm study. They can be readily and repeatedly trapped at nests, and losses to nest predators are low. Adults return to previous breeding sites with high fidelity, so individuals marked during or after their first reproductive season can be reliably captured in subsequent years, and return rate to the breeding area can be used as an index of survival. Swallows using nest boxes are extraordinarily resistant to the disturbance of handling, allowing repeated captures to obtain measurements, blood samples, etc., both within and between breeding seasons.