Extrinsic Evolution
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Effect of the mechanical properties and mode loading on the mechanical behaviour of weldment: a numerical analysis
Welding is used to realize permanent assembly in mechanical structures to assure the continuity of the parts to be assembled contrary to the other assembly techniques which have physical or chemical discontinuities. Generally, crack evolution depends on several intrinsic and extrinsic parameters of material. The aim of this work is to analyse the severity of
Mat. Res.. Publicado em: 07/05/2013
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2. Evolução e ecologia de tricomas em Bignonieae (Bignoniaceae): estruturas morfológicas de defesa anti-herbivoria? / Evolution and ecology of trichomes in Bignonieae (Bignoniaceae): morphological structures of anti-herbivory defense?
This thesis focused on the evolutionary-ecology of trichomes in the tribe Bignonieae (Bignoniaceae), and in the potential defensive role of these structures against herbivores. More specifically, we characterized four trichome morphotypes found in vegetative plant parts of representatives of the Bignonieae, as well as studied the macro-evolutionary patterns
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/11/2011
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3. Projeto e analise de receptores iterativos atraves de funções EXIT / Design and analysis of iteativers using EXIT charts
Durante a última década foram desenvolvidas novas ferramentas para o projeto e análise da decodificação iterativa de códigos concatenados. Duas destas ferramentas são: o algoritmo de evolução de densidades de probabilidade (conhecido em inglês como density evolution) e as funções EXIT (do inglês, Extrinsic Information Transfer Functions). As cur
Publicado em: 2007
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4. Didatica transpessoal : perspectivas inovadoras para uma educação integral / Transpersonal didactic: the inovator perspective for integral education
This thesis refers to the construction and application of a teaching didactic technique according to the vision of the Transpersonal Psychology, which recognizes spirituality and the necessity of transcendence as inherent to human nature, observing the human being in his biopsycho, socialcultural and spiritual dimensions. The implications of this view have b
Publicado em: 2006
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5. Raman analyses of residual stress in diamond thin films grown on Ti6Al4V alloy
The stress evolution in diamond films grown on Ti6Al4V was investigated in order to develop a comprehensive view of the residual stress formation. Residual stress is composed of intrinsic stress induced during diamond film growth and extrinsic stress caused by the different thermal expansion coefficients between the film and substrate. In the coalescence sta
Materials Research. Publicado em: 2003-01
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6. REPAROS E AJUSTES AUTOMÁTICOS DE CIRCUITOS ELETRÔNICOS ATRAVÉS DE ELETRÔNICA EVOLUCIONÁRIA / REPARACIONES Y AJUSTES AUTOMÁTICOS DE CIRCUITOS ELECTRÓNICOS A TRAVÉS DE ELECTRÓNICA EVOLUTIVA / EVOLVABLE AUTOMATIC REPAIR AND ADJUSTMENT OF ELECTRONIC CIRCUITS
Esta disertación investiga la utilización de técnicas de electrónica Evolutiva en los procesos de reparación y ajuste de circuitos electrónicos. El objetivo del trabajo fue evaluar el desempeño de algoritmos de computación evolutiva en la reparación de circuitos electrónicos defectuosos y en el ajuste y mejoría de los circuitos no óptimos, ofreci
Publicado em: 2001
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7. Experimental evolution of aging, growth, and reproduction in fruitflies
We report in this paper an evolutionary experiment on Drosophila that tested life-history theory and the evolutionary theory of aging. As theory predicts, higher extrinsic mortality rates did lead to the evolution of higher intrinsic mortality rates, to shorter lifespans, and to decreased age and size at eclosion; peak fecundity also shifted earlier in life.
The National Academy of Sciences.
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8. Homologs of Plant PsbP and PsbQ Proteins Are Necessary for Regulation of Photosystem II Activity in the Cyanobacterium Synechocystis 6803W⃞
The mechanism of oxygen evolution by photosystem II (PSII) has remained highly conserved during the course of evolution from ancestral cyanobacteria to green plants. A cluster of manganese, calcium, and chloride ions, whose binding environment is optimized by PSII extrinsic proteins, catalyzes this water-splitting reaction. The accepted view is that in plant
American Society of Plant Biologists.
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9. Thermal protection of the oxygen-evolving machinery by PsbU, an extrinsic protein of photosystem II, in Synechococcus species PCC 7002.
The evolution of oxygen is the reaction that is the most susceptible to heat in photosynthesis. We showed previously that, in the cyanobacterium Synechococcus sp. PCC 7002, some protein factors located on the thylakoid membranes are involved in the stabilization of this reaction against heat-induced inactivation, and we identified cytochrome C550 as one such
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10. Studies on 17,24 kD Depleted Photosystem II Membranes 1: I. Evidences for High and Low Affinity Calcium Sites in 17,24 kD Depleted PSII Membranes from Wheat versus Spinach
Analyses were made of the effects of extraction of the 17,24 kilodalton extrinsic proteins from spinach versus wheat photosystem II (PSII) membranes on Ca abundance and O2 evolution capacity determined in the absence and presence of either Cl− or Ca2+. Extraction of these proteins from spinach PSII routinely diminished steady state O2 evolution by about 70
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11. Targeted Destruction of DNA Replication Protein Cdc6 by Cell Death Pathways in Mammals and Yeast
The highly conserved Cdc6 protein is required for initiation of eukaryotic DNA replication and, in yeast and Xenopus, for the coupling of DNA replication to mitosis. Herein, we show that human Cdc6 is rapidly destroyed by a p53-independent, proteasome-, and ubiquitin-dependent pathway during early stages of programmed cell death induced by the DNA-damaging d
The American Society for Cell Biology.
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12. Effects of a Snake α-Neurotoxin on the Development of Innervated Skeletal Muscles in Chick Embryo
The evolution of the cholinergic (nicotinic) receptor in chick muscles is monitored during embryonic development with a tritiated α-neurotoxin from Naja nigricollis and compared with the appearance of acetylcholinesterase. The specific activity of these two proteins reaches a maximum around the 12th day of incubation. By contrast, choline acetyltransferase