Results 11 to 20 of about 4,104,633 (252)
Pearl formation in an Early Cretaceous belemnite [PDF]
PalZ, 2020 AbstractMany aspects of the paleobiology and biomineralization of belemnites, the most common fossil coleoid cephalopods of the Mesozoic, are still unclear. Here, we describe a pearl from an Early Cretaceous belemnite rostrum (Duvalia emerici) using high-resolution micro-CT imaging.
Kevin Stevens +3 more
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Genetic contribution to pearl formation [PDF]
, 2011 The silver, Pinctada maxima, and black-lip, Pinctada margaritifera, pearl oysters are two commercially important species which produce high-value "South Sea" pearls. Although pearl culture techniques were developed in the early 1950's and have been continually refined, a large proportion of the pearl harvest (~60%) from these two species still fails to
McGinty, Erin Louise
openaire +3 more sources
, 2008 Pearls have a very long history of being valued as beautiful gems but differ of course in that they are secreted by living animals. Cultured pearls have been produced for almost a hundred years, but the methods for farming pearl oysters and inducing ...
Southgate, Paul C., Lucas, John S.
core +2 more sources
Frontiers in Marine Science, 2021 Freshwater pearl mussels and marine pearl oysters are major producers of cultured pearls. With the development of pearl farming, pearl bivalve mollusks have attracted significant research attention over the past 25 years.
Qichao Cheng +4 more
doaj +1 more source
Sustainability and traceability in marine cultured pearl production [PDF]
, 2014 For centuries, wild pearl oysters and mussels were fished in the quest for natural pearls and shell material. This eventually led to the drastic overexploitation of oyster stocks in many areas of the globe.
Cartier, Laurent Emmanuel Henri
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Comparative analysis of the transcriptome in tissues secreting purple and white nacre in the pearl mussel Hyriopsis cumingii. [PDF]
PLoS ONE, 2013 The triangle sail mussel Hyriopsis cumingii (Lea) is the most important mussel species used for commercial freshwater pearl production in China. Mussel color is an important indicator of pearl quality. To identify genes involved in the nacre coloring, we
Zhiyi Bai +4 more
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Frontiers in Genetics, 2022 Pearl color is regulated by genetics, biological pigments, and organic matrices and an important factor that influences the pearl economic value. The epigenetic regulation mechanism underlying pearl pigmentation remains poorly understood.
Ziman Wang +11 more
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Structural, mineralogical, and biochemical diversity in the lower part of the pearl layer of cultivated seawater pearls from Polynesia [PDF]
, 2008 A series of Polynesian pearls has been investigated with particular attention to the structural and compositional patterns of the early developmental stages of the pearl layer.
Perez-Huerta, A. +16 more
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Formation and maladies of pearls [PDF]
Journal of the Franklin Institute, 1903 n ...
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“New Pearl Harbor” and US Digital Media 2001‑2002
Галактика медиа: журнал медиа исследований, 2023 The research topic is aimed at studying the means, methods and techniques of updating the metaphor “New Pearl Harbor” in the US foreign policy discourse.
Sergei O. Buranok, Polina D. Tokmakova
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