The Buckling of Cylindrical Shells Status Report No. 10

Buckling of cylindrical shells under uniform axial compressio

The effect of end slope on the buckling stress of cylindrical shells

End slope effect on buckling stress of seamless cylindrical shell

Root development and lodging resistance in oats

Cover title."This bulletin is a report on Department of Field Crops project No. 203, 'Breeding Better Oats for Missouri' and is part of a thesis presented to the Graduate School, University of Missouri, in partial fulfillment of the doctor of philosophy degree"--P. [2].Digitized 2007 AES.Includes bibliographical references (page 37)

The buckling of thin-walled circular cylinders under axial compression and bending

Bucking of thin-walled electroplated copper and Mylar circular cylinders under axial compression and bendin

Ariel - Volume 8 Number 5

Executive Editor James W. Lockard. Jr. Business Manager Neeraj K. Kanwal University News Martin Trichtinger World News Doug Hiller Opinions Elizabeth A. McGuire Features Patrick P. Sokas Sports Desk Shahab S. Minassian Managing Editor Edward H. Jasper Managing Associate Brenda Peterson Photography Editor Robert D. Lehman, Jr. Graphics Christine M. Kuhnl

Growing good crops of oats in Missouri

Revision of Bulletin 644.Cover title.Includes bibliographical references

Winter wheat, 1988

"August 1988.""The objective of the Missouri wheat performance testing program is to help Missouri growers select varieties best suited for their areas and conditions. The University of Missouri Agricultural Experiment Station in conjunction with the Missouri Seed Improvement Association and entrants from private companies all cooperate in evaluating public and private wheat varieties and hybrids for the state of Missouri.

Ariel - Volume 8 Number 4

Executive Editor James W. Lockard Jr. Issues Editor Neeraj K. Kanwal Business Manager Neeraj K. Kanwal University News Martin Trichtinger World News Doug Hiller Opinions Elizabeth A. McGuire Features Patrick P. Sokas Sports Desk Shahab S. Minassian Managing Editor Edward H. Jasper Managing Associate Brenda Peterson Photography Editor Robert D. Lehman, Jr. Graphics Christine M. Kuhnl

On The Doppler Velocity of Emission Line Profiles Formed in the "Coronal Contraflow" that is the Chromosphere-Corona Mass Cycle

This analysis begins to explore the complex chromosphere-corona mass cycle using a blend of imaging and spectroscopic diagnostics. Single Gaussian fits to hot emission line profiles (formed above 1MK) at the base of coronal loop structures indicate material blue-shifts of 5-10km/s while cool emission line profiles (formed below 1MK) yield red-shifts of a similar magnitude - indicating, to zeroth order, that a temperature-dependent bifurcating flow exists on coronal structures. Image sequences of the same region reveal weakly emitting upward propagating disturbances in both hot and cool emission with apparent speeds of 50-150km/s. Spectroscopic observations indicate that these propagating disturbances produce a weak emission component in the blue wing at commensurate speed, but that they contribute only a few percent to the (ensemble) emission line profile in a single spatio-temporal resolution element. Subsequent analysis of imaging data shows material "draining" slowly (~10km/s) out of the corona, but only in the cooler passbands. We interpret the draining as the return-flow of coronal material at the end of the complex chromosphere-corona mass cycle. Further, we suggest that the efficient radiative cooling of the draining material produces a significant contribution to the red wing of cool emission lines that is ultimately responsible for their systematic red-shift as derived from a single Gaussian fit when compared to those formed in hotter (conductively dominated) domains. The presence of counter-streaming flows complicates the line profiles, their interpretation, and asymmetry diagnoses, but allows a different physical picture of the lower corona to develop.Comment: 7 pages, 5 color figures. Accepted to Appear Ap

Fiber and protein degradation characteristics of stockpiled Tifton 85 bermudagrass

A 2-yr study was conducted to determine effects of rate of N fertilization on kinetic parameters of fiber digestion and protein degradability in stockpiled Tifton 85 bermudagrass. Six 0.76-ha pastures of stockpiled Tifton 85 bermudagrass were cut to a 10-cm stubble height on Aug 1 and fertilized with either 56 (56N), 112 (112N), or 168 (168N) kg N/ha (2 pastures/treatment). Kinetic parameters of fiber digestion included 72-hr potential extent of NDF digestion (PED), rate of NDF digestion, and lag time. The PED did not differ among N fertilization treatments in Yr 1 or Yr 2. In Yr 1, PED was greatest (P 0.05) among N fertilization treatments in either Yr 1 or Yr 2. In Yr 1, rate of NDF digestion was greater (P 0.05) from Nov 28; and was greater (P 0.05) from Dec 13. In Yr 2, rate of NDF digestion was greater (P 0.05) from Nov 11; and was greater (P 0.05) from Jan 21. In Yr 1, lag time was greater (P 0.05) among N fertilization treatments; lag time was least (P 0.05) to be positively correlated with lag time (r = 0.39). In Yr 2, there was a negative correlation (P 0.05) to be negatively correlated (r = -0.25) with lignin concentration. In Yr 1, DIP was greatest (P < 0.05) on Oct 24 and Dec 13, intermediate on Nov 28, and least (P < 0.05) on Jan 16. In Yr 2, DIP was greatest (P < 0.05) for the 56N and 168N treatments, and least (P < 0.05) for 112N; DIP was greatest (P < 0.05) on Jan 21, intermediate on Nov 25 and Jan 7, and least (P < 0.05) on Nov 11. Mean monthly air temperature was correlated (P < 0.05) with all parameters of NDF digestion; PED (r = 0.69, r = 0.91) and rate (r = 0.56, r = 0.51) were positively correlated, whereas lag time (r = -0.54, r = -0.85) was negatively correlated in Yr 1 and 2, respectively. Results of this study suggest that kinetic parameters of NDF digestion in stockpiled Tifton 85 bermudagrass were influenced more by temporal changes over the stockpile season than by N fertilization level. Furthermore, changes in protein degradation characteristics were less pronounced than changes in kinetic parameters of NDF digestion. Supplementation formulations should utilize kinetic parameters of fiber digestion to insure that energy-yielding components of NDF are sufficient to meet requirements throughout the stockpile season. The highly degradable CP fraction in stockpiled bermudagrass produces sufficient degradable intake protein to support fibrolytic activity and growth of ruminal microorganisms throughout the stockpile season. Supplementation with sources of digestible fiber and undegradable intake protein could be expected to increase metabolizable protein supply to the host animal, depending on changing forage quality throughout the stockpiled grazing season