Development of SSB/DSB auxiliary time division multiplexer and demultiplexer Final report, 14 Jun. 1967 - 19 Feb. 1968

Design and performance of single sideband-double sideband auxiliary time division multiplexer prototype and demultiplexer breadboard mode

Composite aircraft structure having lightning protection

A lightning protection system for advanced composite aircraft structures consisting of a sandwich structure including two layers of aluminum foil separated by a layer of dielectric material. The sandwich structure is applied to the surface of the composite aircraft structure desired to be protected from lightning strike damage thereby confining damage to the sandwich structure which can be removed and replaced

North Central South Dakota Farm Record Summary 1948 Sixth Annual Report

This is the sixth annual report of the farm record study started by the Experiment Station in 1943. Farm record cooperators are located in two areas of the state; namely, the Southeastern and North Central Areas. A summary of the results of the Southeastern area are included in a separate pamphlet

Viscous Decoupling Transitions for Individually Dragged Particles in Systems with Quenched Disorder

We show that when an individual particle is dragged through an assembly of other particles in the presence of quenched disorder, a viscous decoupling transition occurs between the dragged particle and the surrounding particles which is controlled by the quenched disorder. A counterintuitive consequence of this transition is that the velocity of the dragged particle can be increased by increasing the strength or density of the quenched disorder. The decoupling transition can also occur when the external drive on the dragged particle is increased, and is observable as a clear signature in the velocity-force response.Comment: 4 pages, 3 postscript figure

The Prediction of Gold Recovery by Carbon-in-Leach Cyanidation using Visible Near-infrared (VNIR) Spectroscopy of Pulverized Ore Samples from the Cortez Hills Underground Mine

A semi-quantitative model was calibrated to predict gold recovery by carbon-in-leach (CIL) cyanidation using visible near-infrared (VNIR) spectroscopy of pulverized ore samples. A model was calibrated using the Cubist rule and instance based regression algorithm on reflectance spectra transformed to the standard normal variate of apparent absorption ( SNV( Log(1/r) ) and reduced to eight components using principal component analysis (PCA). This model, calibrated to the entire dataset has an R-squared value of 0.976 and a root mean squared error of calibration (RMSEC) of 4.87%. Bootstrap validation of the model estimates an R-squared value of 0.813 and a root mean squared error (RMSE) of 13.45% for the population of samples represented by this dataset. Interpretation of the calibrated model suggests that spectral features of iron oxide minerals have a strong influence on gold recovery

Southeastern South Dakota Farm Record Summary 1948 Sixth Annual Report

This is the sixth annual report of the farm record study started by the Experiment Station in 1943. Farm record cooperators are located in two areas of the state; namely, the Southeastern and North Central Areas. A summary of the results of the North Central area are included in a separate pamphlet

Effect of nitrogen, phosphate and potassium additions to the soil on yield and root rot of pod peas, The

January, 1944.Includes bibliographical references (pages 86-91)