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Evolutionary patterns of Productida (Brachiopoda) morphology during the Permian in South China

Science China Earth Sciences 2008年第11期51卷 1589-1600页

作者： ZHANG Yang1 & HE WeiHong1,2 1 Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China 2 Key Laboratory of Biogeology and Environmental Geology of Ministry of Education, China University of Geosciences, Wuhan 430074, China Faculty of Earth Sciences China University of Geosciences Wuhan China Key Laboratory of Biogeology and Environmental Geology of Ministry of Education China University of Geosciences Wuhan China

The evolutionary patterns of Productida (brachiopod) morphology throughout the Permian show that while the percentage proportion of Productida (brachiopod) with strongly concentric and radial ornamentation declined from the Cisuralian to the Guadalupian, and then increased towards the Changhsingian via Wuchiapingian, the percentage proportion of Productida (brachiopod) with fine concentric and radial ornamentation distinctly increased from the Cisuralian to the Guadalupian, slightly declined towards the Wuchiapingian, and then increased towards the Changhsingian. From the Cisuralian to the Changhsingian, the percentage proportion of brachiopods with spinose ornamentation shows a persistent declining trend. The shell size generally indicates a miniaturization trend at species level during the Wuchiapingian to Changhsingian (including the transitional bed). These evolutionary patterns of brachiopod ornamentation and size are possibly related to the anoxia, food shortage, sea-level fluctuation, and change of substrate in the Permian (including the Permian-Triassic transitional interval) in South China.

关键词： brachiopod ornamentation size Permian South China

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Making Bibelot:Casting material research within cultural frameworks

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Frontiers of Architectural Research 2019年第2期8卷 121-135页

作者： Erkin Ozay Gregory Delaney Nicholas Traverse Andrew Pries School of Architecture and Planning University at BuffaloBuffaloNY 14214USA Boston Valley Terra Cotta NY 14127USA

Material investigations in architecture often exclude practice implications by narrowly determining the scope and limitations of *** limitations are necessary and warranted for open-ended inquiries undertaken in controlled *** with commercial outfits in the context of a prescribed project,on the other hand,requires a clear attitude that accounts for the agency of the manufacturer.A small design-build intervention,completed with an in-kind donation from a terra cotta manufacturer in Buffalo,New York,gave us the opportunity to take on such a collaborative *** order to explore the potentials of terra cotta as a building material to the greatest extent,we strategically increased the complexity of the endeavor,challenging the design and manufacturing team to address production problems in a timely manner to meet the project *** doing this,we relied on conceptual constructs that address specific material and institutional histories of terra cotta and the cultural context,registered as form,color,and ornamentation in the *** paper gives a detailed account of the entire process and the working assumptions by bridging the design and manufacturing decisions in an interrelated manner.

关键词： Material research Terra cotta Design-build Color in architecture ornamentation

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