Shells Selection
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Insulin-loaded polymeric mucoadhesive nanoparticles: development, characterization and cytotoxicity evaluation
Abstract Mucoadhesive nanoparticles are particularly interesting for delivery through nasal or pulmonary routes, as an approach to overcome the mucociliary clearance. Moreover, these nanoparticles are attractive for peptide and protein delivery, particularly for insulin to treat diabetes, as an alternative to conventional parenteral administration. Thus, chi
Braz. J. Pharm. Sci.. Publicado em: 07/06/2018
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2. An integrative approach-using field and laboratory data to characterize shell utilization and selection pattern by the hermit crab Pagurus criniticornis (Paguridae) from Anchieta Island, Brazil
Abstract The aim of this study was to characterize the pattern of gastropod shell occupation in the field and selection of shell size and type under laboratory conditions by the hermit crab Pagurus criniticornis (Dana, 1852), inhabiting the infralittoral area of Anchieta Island, São Paulo, Brazil. Hermit crabs were obtained monthly during 1999 by SCUBA divi
Nauplius. Publicado em: 09/09/2016
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3. Research on eggshell structure and quality: an historical overview
The eggshell is an important structure for two reasons. Firstly it forms an embryonic chamber for the developing chick, providing mechanical protection and a controlled gas exchange medium. Secondly it is a container for the market egg, providing protection of the contents and a unique package for a valuable food. The superficial structure of the shell has b
Revista Brasileira de Ciência Avícola. Publicado em: 2005-06
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4. The influence of shell species and size on the shell selection pattern of Paguristes tortugae (Decapoda, Diogenidae) from Anchieta Island (Ubatuba, Brazil)
Shell selection by the hermit crab Paguristes tortugae Schmitt, 1933 from Anchieta Island (Brazil) was analyzed using the six most frequently occupied shell species in the field and taking into account the sexual condition of the individuals, the shell size and the shell species. The experiments were conducted under laboratory conditions and the shell specie
Iheringia. Série Zoologia. Publicado em: 30/12/2004
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5. Atração de Paguros criniticornis Dana, 1852 (Decapoda, Anomura, Paguridae) para eventos de predação simulada
Hermit crabs are decapods crustaceans that occupy empty gastropod shells to obtain protection against predators and desiccation. They must periodically obtain new shells because of crab growth and deterioration of shells. New shells are obtained by chance encounter of an empty shell, by shell exchange with another hermit crab, and by attending gastropod pred
Publicado em: 2003
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6. Padrão de ocupação e seleção de conchas pelo ermitão Paguristes tortugae SCHMITT, 1933 (Crustacea, Anomura) na Ilha Anchieta, Ubatuba, São Paulo. / Patterns of shell utilization and selection by the hermit crab Paguristes tortugae SCHMITT, 1933 (Crustacea, Anomura) from Anchieta Island, Ubatuba, São Paulo.
No presente trabalho caracterizou-se o padrão de utilização de conchas pelo ermitão Paguristes tortugae, habitante do infralitoral da Ilha Anchieta (Ubatuba), analisando-se comparativamente o padrão de seleção e de ocupação de conchas no ambiente natural e em laboratório. Para o estudo de ocupação de conchas no ambiente, os indivíduos foram cole
Publicado em: 2001
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7. Intense natural selection caused a rapid morphological transition in a living marine snail
Shell shape and shell thickness of the intertidal snail Littorina obtusata changed markedly between 1871 and 1984 in northern New England. Shells collected prior to 1900 were high-spired with thin walls, whereas shells collected in 1982-84 were low-spired with thick walls. An intertidal crab (Carcinus maenas) which preys on L. obtusata expanded its range int
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8. Geometrical and crystallographic constraints determine the self-organization of shell microstructures in Unionidae (Bivalvia: Mollusca).
Unionid shells are characterized by an outer aragonitic prismatic layer and an inner nacreous layer. The prisms of the outer shell layer are composed of single-crystal fibres radiating from spheruliths. During prism development, fibres progressively recline to the growth front. There is competition between prisms, leading to the selection of bigger, evenly s
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9. Investigation of various factors affecting encapsulation on the In-Cap automatic capsule-filling machine
The purpose of this study was to determine the factors that influence fill weight and weight variability of capsules produced on the In-Cap and to assess any differences in terms of capsule defects between gelatin and HPMC (Quali-V) shells. The In-Cap is an automatic tamping type capsule-filling machine and the low output of ≈3000 capsules/hour makes it id
Springer-Verlag.