Skylab SO71/SO72 circadian periodicity experiment

The circadian rhythm hardware activities from 1965 through 1973 are considered. A brief history of the programs leading to the development of the combined Skylab SO71/SO72 Circadian Periodicity Experiment (CPE) is given. SO71 is the Skylab experiment number designating the pocket mouse circadian experiment, and SO72 designates the vinegar gnat circadian experiment. Final design modifications and checkout of the CPE, integration testing with the Apollo service module CSM 117 and the launch preparation and support tasks at Kennedy Space Center are reported

Women in Agriculture: Living in a Man\u27s World

Despite women’s involvement in agriculture, their contributions have been overlooked in society. Women make up at least a third of those involved in agriculture as farmers, landowners, and in agricultural faculty positions. These numbers do not appear to be decreasing. Although there are several agricultural roles, this study focuses primarily on those women who own agricultural land, but do not farm the land themselves. Rather, these women rent it out to a farmer who operates the land for them (women nonoperating landowners or WNOLs, in short). Previous research suggests these women may be facing considerable barriers as an agricultural landowner and several gaps exist in research. This dissertation contributes to this body of research through a series of three studies. I first begin by conducting an analysis of 361 photos posted on the U.S. Department of Agriculture’s (USDA) website and social media to determine how they are representing women in agriculture. In terms of the numbers of women portrayed, who is the focus of the photograph, and if women are portrayed in an agricultural role, the findings reveal that women are severely underrepresented in comparison to males. The second study compiles a series of interviews with WNOLs to understand power dynamics in terms of decision-making between the woman landowner and her farm operator, or renter (as they are referred to in this study). The findings reveal three groups of women: those who are begrudgingly yielding their power to their renter; those who share power mutually; and those who refuse to yield power. Each of these groups of women reveal the many experiences facing WNOLs today. In the third study, interviews are conducted with WNOLs and agricultural agency women staff, both of whom have been involved in participating in a unique outreach method. This method helps provide women opportunities to increase their human, social, and cultural capital through engagement with one another and learning about various agricultural practices. Both groups of women are asked about the barriers they perceive WNOLs to be facing, along with what aspects of the outreach they feel are most beneficial in addressing these barriers. Results from this study suggest that women face considerable barriers to ownership, both from feeling they lack knowledge and with issues in their renter relationship. However, the outreach methods prove to be a powerful tool that help these women connect with one another and increase their knowledge about agricultural practices. Overall, these three studies help to advance the research on women in agriculture

Nutritional Analysis of Whole Green Crab, Carcinus maenas, for Application as a Forage Fish Replacement in Agrifeeds

Nutritional composition of a composite sample of whole green crabs, Carcinus maenas (L.), was undertaken to evaluate efficacy as a forage fish replacement for seafood-meal manufacture. Whole green crabs sampled from New Hampshire waters were ground together and analyzed for proximate profile (moisture, lipid, protein, fiber, and ash), fatty acid profile, amino acid profile, mineral composition, and mercury content. Green crab mince contained 16.55 ± 0.29% ash, 12.27 ± 0.25% protein, and 0.21 ± 0.07% lipid, and comprised all amino acids essential for chickens and most species of fish. Fatty acid composition of ground green crab was 67.98% unsaturated, and 23.29% saturated, and was richer in eicosapentaenoic acid (EPA) than docosahexaenoic acid (DHA). Levels of mercury in green crab mince were below testable limits. The nutritional profile of green crab mince was evaluated relative to the nutritional profile of menhaden from the literature, and possible agrifeed applications for whole green crab were considered. Green crab showed great potential as a forage fish replacer in seafood-meal applications for chickens and ash tolerant species of fish

Engineering study to determine feasible methods of simulating planetary albedo and radiation effects upon the thermal balance of spacecraft Final report

Planetary radiation and albedo effects on thermal balance of spacecraft orbiting Mars and Venu

Agribusiness Capstone Courses Design: Objectives and Strategies

This paper discusses the benefits of using strategic management principles as the cornerstone for building the agribusiness capstone experience. The necessity for agribusiness firms to create and implement strategies that build a sustainable competitive advantage in turn necessitates the development of strategic management skills in the leaders/managers of the future. As such, the objectives of a capstone course lean heavily toward the integrative development of strategic decision-making competence. This has a number of implications for the capstone professor in terms of course content, pedagogies, and subsequent measurement of student performance.Agribusiness, Teaching/Communication/Extension/Profession,

Liquid meal composition, postprandial satiety hormones, and perceived appetite and satiety in obese women during acute caloric restriction

OBJECTIVE: The purpose of this study was to compare postprandial satiety regulating hormone responses (pancreatic polypeptide (PP) and peptide tyrosine tyrosine (PYY)) and visual analog scale- (VAS) assessed perceived appetite and satiety between liquid high-protein (HP) and high-carbohydrate (HC) meals in obese women during acute (24-h) caloric restriction. DESIGN: Eleven obese premenopausal women completed two conditions in random order in which they consumed 1500 calories as six 250-calorie HP meals or six 250-calorie HC meals over a 12-h period. Blood samples were taken at baseline and every 20 min thereafter and analyzed for PP and PYY concentrations. At these same points, perceived hunger and fullness were assessed with a VAS. The incremental area under the curve (iAUC) was used to compare postprandial responses. RESULTS: THE 12-H PP AND PYY IAUC WERE GREATER (P0.05) DURING THE HP CONDITION (PP: 4727±1306 pg/ml×12 h, PYY: 1373±357 pg/ml×12 h) compared with the HC condition (PP: 2300±528 pg/ml×12 h, PYY: 754±246 pg/ml×12 h). Perceived hunger and fullness were not different between conditions (P>0.05). The greatest changes in PYY and perceived fullness occurred after the morning meals during both conditions. CONCLUSIONS: These data suggest that in obese women during acute caloric restriction before weight loss, i) liquid HP meals, compared with HC meals, result in greater postprandial PP and PYY concentrations, an effect not associated with differential appetite or satiety responses, and ii) meal-induced changes in PYY and satiety are greatest during the morning period, regardless of dietary macronutrient composition