Allometric Relationships
Mostrando 25-36 de 38 artigos, teses e dissertações.
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25. Crescimento e fator de condição na fase juvenil de Farfantepenaeus brasiliensis (Latreille) e F. paulensis (Pérez-Farfante) (Crustacea, Decapoda, Penaeidae) em uma lagoa costeira tropical do Rio de Janeiro, Brasil
The growth relations of the shrimps Farfantepenaeus brasiliensis (Latreille, 1817) and F. paulensis (Pérez-Farfante, 1967) were evaluated at Imboassica lagoon, Macaé, Rio de Janeiro State, between June 1995 and September 1997, in four periods after events of sandbar opening. This sandbar separated the lagoon from the Atlantic Ocean. Through the evaluation
Revista Brasileira de Zoologia. Publicado em: 2003-09
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26. Estrutura, dinamica e alometria de quatro especies arboreas tropicais
Size structure, pattern of light enviromnent distribution, demographic traits, and allometric relationships in crown shape and trunk diameter with height, were compared among four tropical tree species differing in maximum size (maximum height attained by adult trees/canopy position). Species chosen for study included a subcanopy species (Garcinia gardnerian
Publicado em: 2000
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27. Polinização por morcegos Glossophaginae versus Phyllostominae em floresta de terra firme na Amazonia Central
The aim of this study is to contrast attributes between plants pollinated by Glossophaginae and Phyllostominae bats in the "terra-fmne" Amazonian forest. The study was conducted in three habitats: "floresta de baixio" (BAl), "floresta de platô" (PLA) and "floresta de vertente" (VER). Thirty four individuaIs of bat-pollinated plants belonging to nine tree sp
Publicado em: 2000
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28. Tamanho, forma, alometria e crescimento em algumas especies de cecropia (Cecropiaceae) do Brasil
Size, form, allometry and growth were studied in some Cecropia species, from Amazonian and Southeastern BraziI. Architectural patterns and scaling of stem and crown was studied in five Amazonian species: Cecropia concolor, C. palmata, C. purpurascens, C. ulei and C. sciadophylla, in Manaus (AM); and in three Southeastern species Cecropia glaziovii, C. holole
Publicado em: 1999
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29. Allometric morphogenesis of complex systems: Derivation of the basic equations from first principles*
Allometric morphogenesis is the generation of form or pattern as a result of differential growth according to power-law relationships among the elements of a complex system. This phenomenon has been noted in a variety of fields for many years, in some cases for centuries, and yet it has never been related to the underlying determinants of the systems. By sta
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30. Plant height–crown radius and canopy coverage–density relationships determine above-ground biomass–density relationship in stressful environments
Debate continues in theoretical ecology over whether and why the scaling exponent of biomass–density (M–N) relationship varies along environmental gradients. By developing a novel geometric model with assumptions of allometric growth at the individual level and open canopy at the stand level, we propose that plant height–crown radius and canopy coverag
The Royal Society.
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31. Invariant scaling relationships for interspecific plant biomass production rates and body size
The allometric relationships for plant annualized biomass production (“growth”) rates, different measures of body size (dry weight and length), and photosynthetic biomass (or pigment concentration) per plant (or cell) are reported for multicellular and unicellular plants representing three algal phyla; aquatic ferns; aquatic and terrestrial herbaceo
The National Academy of Sciences.
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32. Differences in the 2nd to 4th digit length ratio in humans reflect shifts along the common allometric line
Ratios often lead to biased conclusions concerning the actual relationships between examined traits and comparisons of the relative size of traits among groups. Therefore, the use of ratios has been abandoned in most comparative studies. However, ratios such as body mass index and waist-to-hip ratio are widely used in evolutionary biology and medicine. One s
The Royal Society.
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33. Many ways to be small: different environmental regulators of size generate distinct scaling relationships in Drosophila melanogaster
Static allometries, the scaling relationship between body and trait size, describe the shape of animals in a population or species, and are generated in response to variation in genetic or environmental regulators of size. In principle, allometries may vary with the different size regulators that generate them, which can be problematic since allometric diffe
The Royal Society.
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34. Pharmacokinetics of (-)-2'-3'-dideoxy-3'-thiacytidine in woodchucks.
The woodchuck (Marmota monax) has proven to be a suitable animal model for studying hepatitis B virus (HBV) infection owing to similarities in the course of infection between woodchuck hepatitis virus (WHV) in woodchucks and HBV in humans. (-)-beta-L-2',3'-Dideoxy-3'-thiacytidine (3TC; lamivudine) is a nucleoside analog which has demonstrated antiviral activ
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35. Ecological community description using the food web, species abundance, and body size
Measuring the numerical abundance and average body size of individuals of each species in an ecological community's food web reveals new patterns and illuminates old ones. This approach is illustrated using data from the pelagic community of a small lake: Tuesday Lake, Michigan, United States. Body mass varies almost 12 orders of magnitude. Numerical abundan
The National Academy of Sciences.
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36. Pharmacokinetics in Animals and Humans of a First-in-Class Peptide Deformylase Inhibitor
BB-83698, a potent and selective inhibitor of peptide deformylase, was the first compound of this novel antibacterial class to progress to clinical trials. Single- and/or multiple-dose studies with doses ranging from 10 to 50 mg of BB-83698/kg of body weight were done with mice, rats, and dogs. Intravenous pharmacokinetics were characterized by low to modera
American Society for Microbiology.