1,294 research outputs found

    Influence of Anthropogenic Climate Change on the Ecophysiology of the Cold Water Coral Lophelia pertusa = Einfluss des anthropogenen Klimawandels auf die Ökophysiologie der Kaltwasserkoralle Lophelia pertusa

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    Monographic work describing the cultivation of cold-water coral Lophelia pertusa in closed recirculating systems and climate change related short- and long-term experiments

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    The article submitted for review is original, has not been previously published and has not been simultaneously submitted for review in another journal.El artículo enviado a revisión es original, no ha sido publicado previamente y no se ha enviado simultáneamente para su evaluación en otra revist

    Formulario de originalidad

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    The article submitted for review is original, has not been previously published and has not been simultaneously submitted for review in another journal.El artículo enviado a revisión es original, no ha sido publicado previamente y no se ha enviado simultáneamente para su evaluación en otra revist

    Semi-nonstandard construction and its application in post-squatter İstanbul

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    Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 2011.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from student submitted PDF version of thesis.Includes bibliographical references (p. 110-112).Prefabricated buildings have long played a role in providing inexpensive, yet high quality dwellings for the multitude. However, such structures are typically standardized in nature and poorly suited for deployment within a crowded urban fabric. In Istanbul, where redevelopment projects have displaced many residents to standardized mass housing units built on the periphery of the city, another possibility for prefabricated housing may be possible. In an age when CNC fabrication is becoming commonplace, the solution may appear to be nonstandard construction, whose potential in architectural discourse is frequently seen as an enabler of novel form making. Yet by strategically utilizing nonstandard tools in an otherwise mass-produced housing system, these techniques can provide variation within an industrial process while still taking advantage of the efficiencies of standardization. This project proposes a method of construction that is based on a lightweight composite panel, into which have been collapsed the building's functional requirements (structure, insulation, weatherproofing). As part of their manufacture, the panels are modified utilizing this "semi-nonstandard" fabrication method. This process, which enables a far greater range of geometries and configurations than standardized construction, allows the construction of safe and efficient housing within the city center. This project proposes this system as a topic of architectural research and also as a social project, enabling Istanbulites whose homes are currently under the threat of expropriation to remain in their communities.by Stephen Form.M.Arch

    Members of Form IV to Dear Sir (10 October 1962)

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    https://egrove.olemiss.edu/mercorr_pro/2114/thumbnail.jp

    UNSTATIONARY ASPECTS OF FÖHN IN A LARGE VALLEY

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    After an outline of the scientific questions within FORM (Foehn study in the Rhine valley during MAP) some results are being discussed, which allow a deeper insight into the unstationary behavior of foehn in a complex Alpine valley. Due to an extremely dense and sophisticated instrumentation of in situ and remote sensing platforms the themodynamic and dynamic structure could be nicely investigated. It was clearly seen that the static stability within valleys may be quite complex, leading often to a three rather than two layer configuration. Simulations with different very high resolution models allow to derive the critical factors which determine the usefulness of the model with respect to local foehn prediction. Of special importance is the correct treatment of the shallow cold air pool. Considering the scientific results so far obtained of the different types of foehn events during MAP-SOP (MAP Special Observing Period, 7 September – 15 November 1999) the FORM initiative can be seen as a very successful part of MAP

    Temperate carbonate cycling and water mass properties from intertidal to bathyal depths (Azores)

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    The rugged submarine topography of the Azores supports a diverse heterozoan association resulting in intense biotically-controlled carbonate-production and accumulation. In order to characterise this cold-water (C) factory a 2-year experiment was carried out in the southern Faial Channel to study the biodiversity of hardground communities and for budgeting carbonate production and degradation along a bathymetrical transect from the intertidal to bathyal 500 m depth. Seasonal temperatures peak in September (above a thermocline) and bottom in March (stratification diminishes) with a decrease in amplitude and absolute values with depth, and tidal-driven short-term fluctuations. Measured seawater stable isotope ratios and levels of dissolved nutrients decrease with depth, as do the calcium carbonate saturation states. The photosynthetic active radiation shows a base of the euphotic zone in ~70 m and a dysphotic limit in ~150 m depth. Bioerosion, being primarily a function of light availability for phototrophic endoliths and grazers feeding upon them, is ~10 times stronger on the illuminated upside versus the shaded underside of substrates in the photic zone, with maximum rates in the intertidal (−631 g/m2/yr). Rates rapidly decline towards deeper waters where bioerosion and carbonate accretion are slow and epibenthic/endolithic communities take years to mature. Accretion rates are highest in the lower euphotic zone (955 g/m2/yr), where the substrate is less prone to hydrodynamic force. Highest rates are found – inversely to bioerosion – on down-facing substrates, suggesting that bioerosion may be a key factor governing the preferential settlement and growth of calcareous epilithobionts on down-facing substrates. In context of a latitudinal gradient, the Azores carbonate cycling rates plot between known values from the cold-temperate Swedish Kosterfjord and the tropical Bahamas, with a total range of two orders in magnitude. Carbonate budget calculations for the bathymetrical transect yield a mean 266.9 kg of epilithic carbonate production, −54.6 kg of bioerosion, and 212.3 kg of annual net carbonate production per metre of coastline in the Azores C factory
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