Results 131 to 140 of about 881 (187)
Photothermal characterization of thermally treated shells of Strombus Gigas
Journal de Physique IV (Proceedings), 2005 The thermal properties of the marine shells of the mollusk Strombus gigas are studied using photoacoustic techniques. In order to generate changes in the layered structure of the shells, they were thermally treated in therange from ambient temperature up to 400°C.
A. Hernández-Ayala +3 more
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Microscopy Research and Technique, 2012 AbstractStrombus gigas and Strombus pugilis are threatened species and aquaculture represents a good alternative solution to the fishing. In this study, we highlighted the intracellular digestion process in the digestive gland of two Strombidae species, S.
Volland, Jean-Marie, Gros, Olivier
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Developmental Plasticity in the Shell of the Queen Conch Strombus Gigas
Ecology, 1995To evaluate the developmental plasticity of shell morphology in the queen conch Strombus gigas, we conducted transplant experiments at five sites in the Exuma Cays, Bahamas. Juvenile conchs from a sixth site were placed in cages at three sites, in an open cage at a fourth site, and in a naturally confined area at a fifth site. All animals spent 8 mo in
Frances C James, Allan W Stoner
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Structural basis for the fracture toughness of the shell of the conch Strombus gigas
Nature, 2000Natural composite materials are renowned for their mechanical strength and toughness: despite being highly mineralized, with the organic component constituting not more than a few per cent of the composite material, the fracture toughness exceeds that of single crystals of the pure mineral by two to three orders of magnitude. The judicious placement of
S Kamat, R Ballarini, Ballarini R
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Marine Biotechnology, 2013
The importance of the dinoflagellate Symbiodinium sp. was studied in the early life stages of the gastropod Strombus gigas. This dinoflagellate was not found in the eggs or the gelatinous mass surrounding the eggs of the mollusk; therefore, Symbiodinium is not inherited directly. To determine whether the planktonic veligers can acquire these algae from
Anastázia T Banaszak
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The importance of the dinoflagellate Symbiodinium sp. was studied in the early life stages of the gastropod Strombus gigas. This dinoflagellate was not found in the eggs or the gelatinous mass surrounding the eggs of the mollusk; therefore, Symbiodinium is not inherited directly. To determine whether the planktonic veligers can acquire these algae from
Anastázia T Banaszak
exaly +3 more sources
Heterostructured mechanical metamaterials inspired by the shell of Strombus gigas
Journal of the Mechanics and Physics of SolidsDespite being highly mineralized, the shells of molluscs exhibit superior strength and toughness because their architectural designs control the evolution of cracks and other types of localized deformation such as shear bands. The crossed-lamellar design
Juzheng Chen +10 more
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Analysis of toughening mechanisms in the Strombus gigas shell
Journal of the Mechanical Behavior of Biomedical Materials, 2015A finite element analysis of the fracture mechanisms in the Strombus gigas conch shell is presented in this work. The S. gigas shell has a complex microarchitecture that consists of three main macroscopic layers of calcium carbonate: the inner, middle, and outer layers.
Scott, DiPette +2 more
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Carbohydrases of the crystalline style and hepatopancreas of Strombus gigas linné
Comparative Biochemistry and Physiology, 1966Abstract 1. In Strombus gigas Linnecarbohydrase activity is present both in the crystalline style and in the hepatopancreas. 2. Only cellulase and maltase were detected in the crystalline style, while extracts of the hepatopancreas contained amylase, cellulase, maltase, cellobiase, α-glucosidase, β-glucosidase, sucrase, galactosidase and ...
Shiro Horiuchi, Charles E. Lane
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Comparative Biochemistry and Physiology, 1968
Abstract 1. 1. Isolated ventricles of Strombus gigas may be made hypodynamic by long perfusion with sea water or by chilling. 2. 2. Acetylcholine will not restart ventricles made hypodynamic by either method. 3. 3. Low concentrations of acetylcholine do not have a significantly excitatory action on spontaneously beating isolated ...
R B, Hill, W N, Thibault
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Abstract 1. 1. Isolated ventricles of Strombus gigas may be made hypodynamic by long perfusion with sea water or by chilling. 2. 2. Acetylcholine will not restart ventricles made hypodynamic by either method. 3. 3. Low concentrations of acetylcholine do not have a significantly excitatory action on spontaneously beating isolated ...
R B, Hill, W N, Thibault
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Contaminants in Queen Conch (Strombus gigas) in Vieques, Puerto Rico
Regional Studies in Marine Science, 2016Abstract Pollution has the potential to negatively alter coastal ecosystem health, including fisheries species, through direct impacts, food web effects and habitat degradation. Vieques is an island municipality of the Commonwealth of Puerto Rico, which lies off the east coast of the main island.
David Whitall +10 more
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