MANUFACTURED EXURBIA

This project redefines the identity of the manufactured housing typology by conceiving of more adaptable structural configurations which provide a framework for breaking the conformity of mass production and mass consumption to give the residents true economic prosperity through control of the 3-D manufacturing process of their homes. Manufactured housing, formerly known as mobile or trailer homes, is one of the most vulnerable housing types in the United States during a severe weather event. This is due to the mass industrial production of a structural composition that is rather suited for permanently fixed construction, leading to fragility in their assemblage and poor construction specifications. The focus of design exploration throughout this thesis is towards the structural stability of manufactured housing in preparation for a severe natural hazard predicated upon refabricating three fundamental elements of its construction: Flexible Frame, Universal bracing, & Ease of the structural manipulation process. While the revitalization of manufactured housing in this thesis rests upon the success of establishing the three afore mentioned elements, the socio-political implication of the project rests upon the 3-D fabrication of the manufactured homes. An on-site fabrication center gives residents ownership of the means of production of their homes and affords freedom from established society, which is the identity from which the housing type emerged in the mid-1950s. Introducing a site dedicated worker-space is a radical change in the sustaining logic of consumerism because the fab-center breaks the traditional buyer seller market system by giving the residents the ability to make constructive decisions on how to improve their standard of living. Given that the chassis of manufactured homes has long served as the defining element of its dual identity as a hybrid house-vehicle typology, the process of equipping manufactured homes will involve designing temporarily held structural assemblies with a flexible frame system that can adapt and respond to regional weather conditions via expansion and reduction of the trailer frame. Therefore, proper bracing of mobile homes involves designing a system that is integrated into the framework of the structure which adapts to various module configurations

Bioluminescence of Colonial Radiolaria in the Western Sargasso Sea

Colonial radiolaria (Protozoa: Spumellarida) were a conspicuous feature in surface waters of the Sargasso Sea during the April (1985) Biowatt cruise. The abundance of colonies at the sea surface at one station was estimated to be 23 colonies · m−2. Bioluminescence by colonial radiolaria, representing at least six taxa, was readily evoked by mechanical stimuli and measured by fast spectroscopy and photon-counting techniques. Light emission was deep blue in color (peak emissions between 443 and 456 nm) and spectral distributions were broad (average half bandwidth of 80 nm). Single flashes were 1–2 s in duration at ≈23 °C, with species-dependent kinetics which were not attributed to differences in colony morphology, since colonies similar in appearance could belong to different species (even families) and display different flash kinetics. Although the presence of dinoflagellate symbionts was confirmed by the presence of dinoflagellate marker pigments in the colonies, luminescence in the radiolaria examined most likely did not originate from symbiotic dinoflagellates because of (1) differences in the emission spectra, (2) unresponsiveness to low pH stimulation, (3) differences in flash kinetics and photon emission of light emission, and (4) lack of light inhibition. The quantal content of single flashes averaged 1 × 109 photons flash−1, and colonies were capable of prolonged light emission. The mean value of bioluminescence potential based on measurements of total mechanically stimulated bioluminescence was 1.2 × 1011 photons · colony−1. It is estimated that colonial radiolaria are capable of producing ≈2.8 × 1012 photons · m−2 of sea surface. However, this represented only 0.5% of in situ measured bioluminescence potential

SIMILARITIES IN THE ASEXUAL REPRODUCTION OF THE OCEANIC DINOFLAGELLATES, PYROCYSTIS FUSIFORMIS, PYROCYSTIS LUNULA, AND PYROCYSTIS NOCTILUCA\u3csup\u3e1\u3c/sup\u3e

Three cultured species of Pyrocystis (Dinoccoccales) reproduced asexually by forming 2 (or 1) aplanospores or zoospores inside the parent cell wall. In all 3 species these small reproductive cells, although they may not resemble the parent cells, swell up rapidly (∼ 10 min) to the approximate size and shape of the parent cell. These swollen cells become new vegetative cells. The above asexual process is the only way by which cells numbers increase in our cultures. Pyrocystis lunula was propagated at the lunula stage of the life cycle. The nonmotile crescent‐shaped cells produced reproductive cells that were Gymnodinium‐shaped and had, in some cases, a trailing flagellum. With P. fusiformis and P. noctiluca, the reproductive cells were not flagellated. With P. fusiformis, these bodies had a pronounced equatorial constriction like a girdle, while in P. noctiluca the “girdle” was an inconspicuous feature if present. With P. noctiluca and P. fusiformis on a 12:12 ld cycle, reproductive cells were formed early in the dark period and they swelled up at the beginning of the light period. Reproduction of P. lunula was not well phased in our experiments, with reproductive cells developing at the end of the light period and the end of the dark period. Copyright © 1971, Wiley Blackwell. All rights reserve

BEHAVIORAL RESPONSES OF OCEANIC ZOOPLANKTON TO SIMULATED BIOLUMINESCENCE

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