Evaluation of Selected Chemical Processes for Production of Low-cost Silicon, Phase 3

The construction of the 50 MT Si/year experimental process system development unit was deferred until FY 1980, and the fluidized bed, zinc vaporizer, by-product condenser, and electrolytic cell were combined with auxiliary units, capable of supporting 8-hour batchwise operation, to form the process development unit (PDU), which is scheduled to be in operation by October 1, 1979. The design of the PDU and objectives of its operation are discussed. Experimental program support activities described relate to: (1) a wetted-wall condensor; (2) fluidized-bed modeling; (3) zinc chloride electrolysis; and (4) zinc vaporizer

Comparison of Productivity of Different Breeds of Meat Goats Under Low-to-Moderate-Input Systems in the United States

Abstract Boer and Kiko goats were imported in the 1990s to enhance the productivity of the US base population of Spanish meat goats. Successful breed introductions require adaptation to the destination environment. Well-planned, low-input management is a good route to meat goat enterprise profitability using proper goat genetics. Reproduction drives profit more than growth and carcass traits. Results of breed evaluation studies on doe reproductive and health traits, the Boer goat influence tended to be negative compared with Kiko and Spanish goat influences. Reduced doe herd reproductive output suggests reduced enterprise profitability. Differences in growth or carcass traits among sire breeds have not consistently favored any particular breed. Boer goat genetics improved visual conformation, which increases market value. Improved visual appraisal has not translated into enhancements for objectively measured carcass traits. Proper breed selection and use in meat goat mating systems are important for enhanced doe herd productivity and profitability in low-input, limited-resource operations. Keywords: Productivity, Breeds, Meat Goat Breeds, Input System

War on the Waters: The Union and Confederate Navies, 1861-1865

New Comprehensive Analysis of Civil War Naval History In August 1863, Abraham Lincoln wrote to his long-time friend James Conklin, summing up the US Navy’s all-encompassing role in the war effort. While the president noted that the army had received most of the notable accolades, Lincol...

Malaria Risk on Ancient Roman Roads: A Study and Application to Assessing Travel Decisions in Asia Minor by the Apostle Paul

This study models malaria risks for travelers on ancient Roman roads with the goal of providing a tool for historical assessment of travel accounts from antiquity. The project includes: identification of malaria risk factors and associated spatial datasets, malaria risk model construction, verification and validation against available pre-eradication data, overlay of ancient Roman road data, and an initial case-study application to the journeys of the Apostle Paul, as narrated in the New Testament book, Acts of the Apostles (Acts). The project is intentionally cross-disciplinary in bringing the technical capabilities of GIS to the task of evaluating nuanced textual sources for historical reconstruction

Now for the Contest:Coastal and Oceanic Naval Operations in the Civil War

War on the High Seas and Harbors An Overview of Naval Campaigns The Civil War may, as is often claimed, be the most written-about conflict in history, but little of that output has been devoted to the naval dimension. As confirmation of this lopsidedness, a quick experiment of...