Results of correlations for transition location on a clean-up glove installed on an F-14 aircraft and design studies for a laminar glove for the X-29 aircraft accounting for spanwise pressure gradient

Results of correlative and design studies for transition location, laminar and turbulent boundary-layer parameters, and wake drag for forward swept and aft swept wings are presented. These studies were performed with the use of an improved integral-type boundary-layer and transition-prediction methods. Theoretical predictions were compared with flight measurements at subsonic and transonic flow conditions for the variable aft swept wing F-14 aircraft for which experimental pressure distributions, transition locations, and turbulent boundary-layer velocity profiles were measured. Flight data were available at three spanwise stations for several values of sweep, freestream unit Reynolds number, Mach numbers, and lift coefficients. Theory/experiment correlations indicate excellent agreement for both transition location and turbulent boundary-layer parameters. The results of parametric studies performed during the design of a laminar glove for the forward swept wing X-29 aircraft are also presented. These studies include the effects of a spanwise pressure gradient on transition location and wake drag for several values of freestream Reynolds numbers at a freestream Mach number of 0.9

The Effects of Moral Obligations to Others and Others\u27 Influence on Veterinarians\u27 Attitudes toward and Recommendations to Utilize Antibiotics in Feedlot Cattle

Decisions to behave in particular ways depend on beliefs, social norms, perceived constraints, and attitudes. Recently, this perspective has been expanded to consider the role of moral obligations in such decisions. Largely ignored are the possible interrelations among moral obligations to significant others and significant others’ influences as they interact to affect decisions. This is of particular interest when a strong moral obligation toward a significant other is associated with strong behavioral expectations by that same significant other. We investigated the interrelations among moral obligations to, and behavioral expectations from, 11 types of significant others in the cattle feeding industry to determine their joint influences on attitudes toward antibiotic use and recommendations for antibiotics in feedlot cattle, drawing data from a random sample of feedlot veterinarians (n=103). Results show that subjective norms and a sense of moral obligation affect both the attitudes toward, and the recommendations for, the use of antibiotics in feedlot cattle. We found several significant interactions among subjective norms and moral obligations, which suggests that perceived moral obligations to peers, clients, and the regulatory norm-setting sector associated with the feedlot industry increase the impact of social pressures from those sectors on the recommendation to use antibiotics in acutely sick, chronically sick, and high-risk feedlot cattle

Insulinlike Growth Factor 1- and 2-Augmented Collagen Gel Repair of Facial Osseous Defects

BACKGROUND: Defects of the facial bone structure are common problems for the facial plastic surgeon. Native type 1 collagen gels (T1CGs) have been shown to mediate repair of facial critical-size defects in rat models. OBJECTIVE: To evaluate the efficacy of T1CG augmented with insulinlike growth factor (IGF) 1, IGF-2, and a combination of IGF-1 and IGF-2 on the repair of facial critical-size defects in a rodent model. METHODS: Twenty-four retired male breeder Sprague-Dawley rats were divided into 4 groups of 6 animals. Facial critical-size defects were created by removing the nasalis bones with a bone-cutting drill. Defects were treated with 300 pg of type 1 collagen gel (T1CG), T1CG augmented with 3 microg of IGF-1, T1CG augmented with 3 microg of IGF-2, or T1CG augmented with a combination of 3 microg of IGF-1 and 3 microg of IGF-2. After 30 days the animals were examined at necropsy with precise planimetry, histological analysis of new bone growth, and radiodensitometric analysis of bone thickness. RESULTS: Radiodensitometric measurements showed that IGF-2 augmentation resulted in greatest osseous healing, with measurements being statistically significant over those of all other groups (P\u3c or = .03). Combination IGF-1 and IGF-2 had osseous healing that was intermediate between IGF-1 augmentation and IGF-2 augmentation alone, with measurements being statistically significant over those of unaugmented gels (P CONCLUSION: Collagen gels augmented with IGF significantly enhance the osteoconductive repair of nasal critical-size defects in a rodent model, with IGF-2 showing highest efficacy

Modern and Classical Languages

This departmental history was written on the occasion of the UND Centennial in 1983.https://commons.und.edu/departmental-histories/1042/thumbnail.jp