Prototype solar heating and cooling systems, including potable hot water

Progress made in the development, delivery, and support of two prototype solar heating and cooling systems including potable hot water is reported. The system consists of the following subsystems: collector, auxiliary heating, potable hot water, storage, control, transport, and government-furnished site data acquisition. A comparison of the proposed Solaron Heat Pump and Solar Desiccant Heating and Cooling Systems, installation drawings, data on the Akron House at Akron, Ohio, and other program activities are included

Reliability assessment of the GEOS A power supply

Reliability assessment of geodetic satellite A power suppl

Development and preliminary validation of measures to assess mother's self-regulatory efficacy and outcome expectations to transport preschool aged children to structured physical activities

Structured physical activity (SPA) is one type of physical activity in which preschool aged children participate (e.g., soccer programs). Given that SPA often occurs at community-based locations, such as at a field or hockey rink, primary caregivers, who are often times mothers, must transport their preschool aged children to the scheduled SPA. Although studies have examined social cognitions important to individuals’ participation in their own scheduled physical activity, no study to date has focused on the social cognitions of mothers’ that may be related to the transportation of their preschool aged children to SPA. The purpose of this two-study dissertation was to use self-efficacy theory to develop and examine the reliability and validity evidence of measures to assess mothers’ social cognitions (i.e., self-regulatory efficacy to overcome barriers and to schedule/plan; outcome expectations including likelihood and value) that may be related to transporting their children to SPA. A literature review, focus group elicitation with nine participants (Mean age = 35.25 years; SD = 3.57), and feedback from three expert judges and 10 participants were used to develop items for each of the measures in Study 1. The reliability of the measures was then investigated in Study 1 using data from 31 participants (Mean age= 33.50 years; SD = 5.79) to examine initial internal consistency and then 64 participants (Mean age= 32.87 years; SD = 4.48) to further examine internal consistency and temporal stability. Findings revealed some evidence for the content and construct validity, internal consistency, and temporal stability of the measures. To continue the construct validation of the measures, it was important to continue to examine the reliability evidence of the measures and other aspects of validity, including concurrent and predictive validity. In Study 2, data from 93 participants (Mean age= 34.88 years; SD = 5.04) were used to examine evidence of the criterion-related validity (i.e., concurrent and predictive) of the developed measures. Results revealed convergence of the measures that assessed similar constructs (i.e., self-regulatory efficacy to schedule/plan and to overcome barriers; outcome expectations: likelihood and value). However, evidence of the divergence of the self-regulatory efficacy measures from the outcome expectation measures was less consistent. Results also revealed that the self-regulatory efficacy beliefs and outcome expectations measures were not significant, independent predictors of transportation to SPA. These predictive validity findings as well as the divergence findings may have been due to the type of mothers who participated in the study (i.e., highly experienced in transporting children to SPA). Findings from the present series of studies suggest a need for continued exploration of the measures, including research with a more diverse sample. Collecting further reliability and validity evidence of these measures to compare it with the evidence from the present studies would contribute to the ongoing construct validation of these measures

Nitric acid-organic mixtures surveyed for use in separation by anion exchange methods

Column elution-spectrographic analysis technique compares certain solvents directly to the methanol system, using inert rare earths instead of actinides. Distribution ratios for americium between 90 percent solvent, 10 percent 5 M nitric acid and Dowex 1 nitrate form resin for a large group of organics miscible in water was determined

Terpenoid-Induced Feeding Deterrence and Antennal Response of Honey Bees

Multiple interacting stressors negatively affect the survival and productivity of managed honey bee colonies. Pesticides remain a primary concern for beekeepers, as even sublethal exposures can reduce bee immunocompetence, impair navigation, and reduce social communication. Pollinator protection focuses on pesticide application guidelines; however, a more active protection strategy is needed. One possible approach is the use of feeding deterrents that can be delivered as an additive during pesticide application. The goal of this study was to validate a laboratory assay designed to rapidly screen compounds for behavioral changes related to feeding or feeding deterrence. The results of this investigation demonstrated that the synthetic Nasonov pheromone and its terpenoid constituents citral, nerol, and geraniol could alter feeding behavior in a laboratory assay. Additionally, electroantennogram assays revealed that these terpenoids elicited some response in the antennae; however, only a synthetic Nasonov pheromone, citral, and geraniol elicited responses that differed significantly from control and vehicle detections

On-orbit spacecraft reliability

Operational and historic data for 350 spacecraft from 52 U.S. space programs were analyzed for on-orbit reliability. Failure rates estimates are made for on-orbit operation of spacecraft subsystems, components, and piece parts, as well as estimates of failure probability for the same elements during launch. Confidence intervals for both parameters are also given. The results indicate that: (1) the success of spacecraft operation is only slightly affected by most reported incidents of anomalous behavior; (2) the occurrence of the majority of anomalous incidents could have been prevented piror to launch; (3) no detrimental effect of spacecraft dormancy is evident; (4) cycled components in general are not demonstrably less reliable than uncycled components; and (5) application of product assurance elements is conductive to spacecraft success

Sampling Assemblages of Turtles in Central Illinois: A Case Study of Capture Efficiency and Species Coverage

Low and variable rates of capture are chronic problems in chelonian studies. We conducted a pilot study to evaluate protocols for future inventories of turtles in Illinois by comparing capture efficiency and species coverage for 2 devices (hoop net and cage trap), baits (fresh and day-old fish), habitats (lentic and lotic) and time periods . We accrued 402 captures of 378 individuals representing 7 species. At Sanganois State Fish and Wildlife Area (Sanganois), hoop nets produced more captures of more species (n = 231; 6 species) than cage traps (n = 119; 4 species). Statistical tests were equivocal for a reach of the Sangamon River, where both devices had 26 captures but hoop nets detected more species (n = 6) than cage traps (n = 3). At Sanganois, catch per unit effort varied with sampling session (time) and freshness of baits; one measure of species coverage varied with session. Results helped us make informed decisions about protocols for future inventories

Operational reliability assessment of the GEOS A spacecraft

Decision theory application to GEOS A spacecraft operational reliability assessmen

ATP-sensitive inwardly rectifying potassium channel modulators alter cardiac function in honey bees

ATP-sensitive inwardly rectifying potassium (KATP) channels couple cellular metabolism to the membrane potential of the cell and play an important role in a variety of tissue types, including the insect dorsal vessel, making them a subject of interest not only for understanding invertebrate physiology, but also as a potential target for novel insecticides. Most of what is known about these ion channels is the result of work performed in mammalian systems, with insect studies being limited to only a few species and physiological systems. The goal of this study was to investigate the role that KATP channels play in regulating cardiac function in a model social insect, the honey bee (Apis mellifera), by examining the effects that modulators of these ion channels have on heart rate. Heart rate decreased in a concentration-dependent manner, relative to controls, with the application of the KATP channel antagonist tolbutamide and KATP channel blockers barium and magnesium, whereas heart rate increased with the application of a low concentration of the KATP channel agonist pinacidil, but decreased at higher concentrations. Furthermore, pretreatment with barium magnified the effects of tolbutamide treatment and eliminated the effects of pinacidil treatment at select concentrations. The data presented here confirm a role for KATP channels in the regulation of honey bee dorsal vessel contractions and provide insight into the underlying physiology that governs the regulation of bee cardiac function

Amitraz and its metabolite modulate honey bee cardiac function and tolerance to viral infection

The health and survival of managed honey bee (Apis mellifera) colonies are affected by multiple factors, one of the most important being the interaction between viral pathogens and infestations of the ectoparasitic mite Varroa destructor. Currently, the only effective strategy available for mitigating the impact of viral infections is the chemical control of mite populations. Unfortunately, the use of in-hive acaricides comes at a price, as they can produce sublethal effects that are difficult to quantify, but may ultimately be as damaging as the mites they are used to treat. The goal of this study was to investigate the physiological and immunological effects of the formamidine acaricide amitraz and its primary metabolite in honey bees. Using flock house virus as a model for viral infection, this study found that exposure to a formamidine acaricide may have a negative impact on the ability of honey bees to tolerate viral infection. Furthermore, this work has demonstrated that amitraz and its metabolite significantly alter honey bee cardiac function, most likely through interaction with octopamine receptors. The results suggest a potential drawback to the in-hive use of amitraz and raise intriguing questions about the relationship between insect cardiac function and disease tolerance