628 research outputs found

    Statistical Interface-leakage Analysis and Feasibility of Superfinished Surfaces for Sealing Final Report, Jan. 1964 - Mar. 1965. Design Criteria for Zero Leakage Connectors for Launch Vehicles

    Get PDF
    Extremely fine finished surfaces as mating parts for sealing in fluid connectors and statistical analysis of interface leakag

    Sense

    Get PDF
    A nonfiction piece reflecting on the mixed nature of nostalgia

    Augur

    Get PDF
    This poem sketches a character listening for the voice of someone she\u27s lost through her radio

    La Coquette : Gavotte Moderne

    Get PDF
    https://digitalcommons.library.umaine.edu/mmb-ps/2802/thumbnail.jp

    Diffusion bonding makes strong seal at flanged connector

    Get PDF
    Copper strip seals a high pressure fluid system connector so that it is insensitive to relaxation of the bolt loads. The copper strip is diffusion bonded to the surfaces of the connector flange by application of high pressure and temperature

    Acceptance of Ms

    Get PDF
    Abstract The noki or dassie-rat (Petromus typicus) is a little-studied diurnal hystricognath rodent endemic to rocky outcrops in south-western Africa. An intermittent study in Namibia of 11 radio-tagged individuals, with over 250 h of direct observation, was done between 2000 and 2004 to document their basic natural history, including their social organization. The study was terminated when noki numbers collapsed, probably due to predation by an expanding population of black mongooses (Galerella nigrata) that was unintentionally provisioned with food at a nearby eco-tourist lodge. Male and female adults were distributed as monogamous pairs on home ranges that were similar in size and shape. The pair bond was strong, with many coordinated behaviours. Reproduction was seasonal with litters of single highly precocial young. Multiple generations remained on the parental home range without significant aggression. Most aggression was between adult males, while adult females showed tolerance towards each other and intruding adult males. Although noki social monogamy is probably the result of male mate guarding, considerable paternal care was observed, including allogrooming and vigilance against predators. Nokis have a relatively low metabolic rate and numerous thermoregulatory behaviours that suggest that nocturnal huddling by the male with his mate and young may be an important factor in the evolution of their social monogamy

    Design Criteria for Zero Leakage Connectors for Launch Vehicles. Mathematical Model of Interface Sealing Phenomenon, Volume 2 Final Report

    Get PDF
    Mathematical model of interface sealing phenomenon in determining design criteria for zero leakage connectors for launch vehicle

    Consumption of Aquatic Plants by the West Indian Manatee

    Full text link
    Because manatees (Trichechus manatus) are large aquatic herbivores they have often been considered as potential control agents for aquatic plants. Several problems are associated with this concept, and a major one has been the gap in knowledge concerning food consumption rates of manatees. We estimated food consumption by measuring chews per unit time, chews per amount of food consumed, and time spent chewing food. Data were collected on captive manatees of various sizes and used to construct regression equations that predict consumption rates based on body size. Time budget data were obtained by radiotelemetry of free-ranging animals. Estimates of consumption rates for manatees eating hydrilla (Hydrilla verticillata Royle) were compared to the estimates biomass of hydrilla in Kings Bay, Florida, the overwintering site for a large manatee populations (116 in the winter of 1980-1981). Estimates show that nearly ten times as many manatees would have been needed just to consume the standing biomass of hydrilla. The inefficiency of manatees as control agents for aquatic plants becomes even more apparent when plant productivity is included in these estimates
    • …
    corecore