713 research outputs found
The Avatar Small Spacecraft System
American Microsat president Joseph A. LeBlanc will present the AVATAR Small Spacecraft System. The AVATAR Small Spacecraft System consists of the AVATAR satellite modules and the ground control and data collection facility. The AVATAR spacecraft is comprised of modules containing specific mission subsystems that are designed to work together or independently to satisfy mission requirements. Four modules provide payload space, control, propulsion and three axis stabilization. The different modules (described below) and the customer launch options will be discussed separately during the presentation. Common Services Module: The Common Services Module houses the spacecraft computer, the TT&C communications equipment, the attitude determination sensors, the spacecraft batteries, the power supply, and other optional subsystems. Propulsion Module: The propulsion module consists of thrusters and propellant stored in spherical tanks to maneuver the AVATAR satellite in orbit. Both cold gas and hydrazine systems are available. Three Axis Stabilization Module: The three axis stabilization module contains the subsystems needed for high-resolution three axis attitude determination and control. Payload Module: The payload module houses the customer payload. The dimensions of the payload module vary, depending on specific payload requirements. Payloads ranging from one to two hundred kilograms in mass can be carried
Fault tolerant software technology for distributed computing system
Issued as Monthly reports [nos. 1-23], Interim technical report, Technical guide books [nos. 1-2], and Final report, Project no. G-36-64
Land use and water quality characterization of Boeuf Basin, LA
The three primary goals of this project were to establish the ambient background of water quality in the Lake Boeuf basin in southeast Louisiana; establish land use patterns in the basin and the relation to water quality; and develop a preliminary plan to improve water quality through the use of best management practices and wetland assimilation. Urban and agricultural acreage borders the basin and runoff from these lands forces loadings of nutrients into the adjacent canals where they become channelized and ultimately exit the Boeuf Basin into Lac des Allemandes. From September 2007 until February 2008, water sampling occurred monthly at twelve discrete locations throughout the study area. These samples were tested for NOx, PO4, Si, NH4, salinity, TSS, TN, and TP. Results of this data showed concentrations in the basin were not extraordinarily high. Sites located nearer to sugarcane acreages showed higher nutrient concentrations as compared to other sampling sites. Field data was compared to an existing dataset compiled by the Louisiana Department of Environmental Quality for use in establishing total maximum daily loads for the basin. Statistical analysis revealed significant decreases of PO4 and salinity concentrations from years 2000 through 2008. A yearly nutrient load estimate for the basin was established for NOx, NH4, TKN, TN, and TP. Using cited nutrient removal curves, it was determined that the available wetland acreage in Boeuf Basin could assimilate these loads achieving nearly 100% removal. Reductions in nutrient loads can be achieved by implementing best management practices in the adjacent agriculture. Other solutions include reducing direct flow from sugarcane field drainage ditches and diversion of this drainage through the wetlands allowing for assimilation
Alien Registration- Leblanc, Joseph William (Sangerville, Piscataquis County)
https://digitalmaine.com/alien_docs/8611/thumbnail.jp
Fault tolerance distributed computing
Issued as Funds expenditure reports [nos. 1-4], Quarterly progress reports [nos. 1-3], and Final report, Project no. G-36-63
Research on reliable distributed computing
Issued as Quarterly funds expenditure reports [nos. 1-4], Quarterly progress reports [nos. 1-4], Final report and Appendix, Project no. G-36-62
Lactic fermentation as a strategy to improve the nutritional and functional values of pseudocereals
One of the greatest challenges is to reduce malnutrition worldwide while promoting sustainable agricultural and food systems. This is a daunting task due to the constant growth of the population and the increasing demands by consumers for functional foods with higher nutritional values. Cereal grains are the most important dietary energy source globally; wheat, rice, and maize currently provide about half of the dietary energy source of humankind. In addition, the increase of celiac patients worldwide has motivated the development of gluten-free foods using alternative flour types to wheat such as rice, corn, cassava, soybean, and pseudocereals (amaranth, quinoa, and buckwheat). Amaranth and quinoa have been cultivated since ancient times and were two of the major crops of the Pre-Colombian cultures in Latin-America. In recent years and due to their well-known high nutritional value and potential health benefits, these pseudocereals have received much attention as ideal candidates for gluten-free products. The importance of exploiting these grains for the elaboration of healthy and nutritious foods has forced food producers to develop novel adequate strategies for their processing. Fermentation is one of the most antique and economical methods of producing and preserving foods and can be easily employed for cereal processing. The nutritional and functional quality of pseudocereals can be improved by fermentation using Lactic Acid Bacteria (LAB). This review provides an overview on pseudocereal fermentation by LAB emphasizing the capacity of these bacteria to decrease antinutritional factors such as phytic acid, increase the functional value of phytochemicals such as phenolic compounds, and produce nutritional ingredients such as B-group vitamins. The numerous beneficial effects of lactic fermentation of pseudocereals can be exploited to design novel and healthier foods or grain ingredients destined to general population and especially to patients with coeliac disease.Fil: Rollan, Graciela Celestina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; ArgentinaFil: Gerez, Carla Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; ArgentinaFil: Leblanc, Jean Guy Joseph. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentin
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