http://hdl.handle.net/1957/32832 Wed, 19 Jun 2013 22:53:09 GMT 2013-06-19T22:53:09Z http://hdl.handle.net/1957/38888 Calibration Methods for an Aerolab 375 Sting Balance to be used in Wind Tunnel Testing Van Hatten, Sean E. Internal force, or sting, balances are used in wind tunnel testing to measure the total force and moment imposed on an aerodynamic structure. A sting balance operates through strain gauges converting strain from externally applied loads to voltage signals. An accurate measuring device is of paramount importance in wind tunnel testing, and this thesis concerns itself with calibrating such measurement device for use with micro air vehicles in a wind tunnel. A calibration matrix was found to convert the voltage output of the balance to force and moment data. Known loads were applied to the different channels of the sting balance and a custom made program was used to read and post process the voltages produced by the strain gauges in the balance under load. A relationship between voltage and load was then found and used to produce the calibration matrix. The calibration matrix was then inputted into a different program to test the accuracy and resolution of the balance by applying known loads, as a reference, and comparing the measured forces to the reference. The attached Thesis and undergraduate research are submitted to satisfy the Transcript Notation requirements for the Department of Physics. Mon, 03 Jun 2013 00:00:00 GMT http://hdl.handle.net/1957/38888 2013-06-03T00:00:00Z http://hdl.handle.net/1957/34351 Resistance to Schistosoma mansoni is correlated with the number of spreading granulocytes in Biomphalaria glabrata Callahan, Piera M.; Larson, Maureen K.; Bender, Randall C.; Bayne, Christopher J. Molluscan internal defenses rely heavily on circulating hemocytes. In most cases, encounters with large foreign bodies result in recognition by hemocytes followed by spreading of these defense cells over the object’s surface. The resulting encapsulation concentrates the force of the hemocytes’ assault on the foreign object. B. glabrata snail lines obtained by self-fertilization of isolated 13-16-R1 [Oregon] individuals have yielded multiple inbred families in which genes are fixed at ~88% of the loci. Among the phenotypic traits that we have measured in 20 of these families are susceptibilities of snails to the PR1 [Oregon] strain of Schistosoma mansoni, and hematocrits of quickly spreading granulocytes present in the hemolymph.  Higher numbers of these cells predict a snail phenotype that is resistant to S. mansoni infection. Both resistant and susceptible snails are found in families with intermediate hematocrits. We infer that within the parental 13-16-R1 population hemocyte numbers are varied. When sufficiently numerous, a snail’s hemocytes can generally prevent parasitic infection. At lower hematocrits, a more complex set of variables interact to determine the outcome of an infection. Sun, 01 Jan 2012 00:00:00 GMT http://hdl.handle.net/1957/34351 2012-01-01T00:00:00Z http://hdl.handle.net/1957/32861 Beaver believer Morales, Monica; Stache, Stephanie; Vollmer, Lori Thu, 23 Aug 2012 00:00:00 GMT http://hdl.handle.net/1957/32861 2012-08-23T00:00:00Z