Failure Constraint
Mostrando 1-11 de 11 artigos, teses e dissertações.
-
1. Adjuvant Pericardial Sac Restraining in Heart Failure Treatment. A Medical Hypothesis Illustrated by a Case Report
Abstract Ventricular constraint therapy has been used to prevent and reverse the progression of heart failure in ischemic and nonischemic cardiomyopathies. We hypothesized that ventricular restraint should be tried by closing the pericardium that was previously opened following left ventricle topographical projection. The surgical technique presentation is i
Braz. J. Cardiovasc. Surg.. Publicado em: 2016-02
-
2. QoS management in smart grids: a Markovian approach
In Smart Grids, a variety of new applications are available to users of the electrical system (from consumers to the electric system operators and market operators). Some applications such as the SCADA systems, which control generators or substations, have consequences, for example, with a communication delay. The result of a failure to deliver a control mes
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2014-12
-
3. Optimum truss design under failure constraints combining continuous and integer programming
Publicado em: 2011
-
4. On the effects of uncertainty on optimum structural design / Estudo do efeito de incertezas na otimização estrutural
In this study the effects of uncertainty on optimum structural design are investigated, by comparing three distinct formulations of a structural optimization problem. Such effects can be quantified in terms of failure probabilities and risk, or expected costs of failure. Deterministic Design Optimization (DDO) allows one the find the shape or configuration o
Publicado em: 2010
-
5. Optimization of hybrid laminated composites using a genetic algorithm
This work aims at developing a genetic algorithm (GA) to pursue the optimization of hybrid laminated composite structures. Fiber orientation (predefined ply angles), material (glass-epoxy or carbon-epoxy layer) and total number of plies are considered as design variables. The GA is chosen as an optimization tool because of its ability to deal with non-convex
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-09
-
6. A tutela jurisdicional do direito prestacional à educação: ensino fundamental regular em ação civil pública no Brasil
Nowadays there is much talk of the (in)efficiency of the judicial process in ensuring the consummation of fundamental rights incumbent on the State, such as the right to education, defined in the republics constitution as a public subjective right at the level of basic education. Actual practice, as a result of the action of the Department for the Defence of
Publicado em: 2008
-
7. A two-parameter framework to describe effects of constraint loss on cleavage fracture and implications for failure assessments of cracked components
This study builds upon the J-Q approach to characterize constraint effects on cleavage fracture behavior of cracked structural components. Discussions emphasize features of current two-parameter fracture methodologies which extend the limits of applicability of single parameter fracture approaches when LSY effects prevail. Inclusion of the second parameter (
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-12
-
8. Bacterial carbon-phosphorus lyase: products, rates, and regulation of phosphonic and phosphinic acid metabolism.
Carbon-phosphorus bond cleavage activity, found in bacteria that utilize alkyl- and phenylphosphonic acids, has not yet been obtained in a cell-free system. Given this constraint, a systematic examination of in vivo C-P lyase activity has been conducted to develop insight into the C-P cleavage reaction. Six bacterial strains were obtained by enrichment cultu
-
9. Human purine nucleoside phosphorylase and adenosine deaminase: gene transfer into cultured cells and murine hematopoietic stem cells by using recombinant amphotropic retroviruses.
Cell lines were established which produced high titers (approximately 10(6) infectious units per ml) of amphotropic, replication-defective recombinant retroviruses which transduced sequences encoding either human purine nucleoside phosphorylase (PNP) or adenosine deaminase (ADA). These viruses also contained a human hypoxanthine phosphoribosyltransferase gen
-
10. The cellular ecology of progressive neoplastic transformation: A clonal analysis
A comparison was made of the competence for neoplastic transformation in three different sublines of NIH 3T3 cells and multiple clonal derivatives of each. Over 90% of the neoplastic foci produced by an uncloned transformed (t-SA′) subline on a confluent background of nontransformed cells were of the dense, multilayered type, but about half of the t-SA′
The National Academy of Sciences.
-
11. Structural changes in simian virus 40 chromatin as probed by restriction endonucleases.
The structure of simian virus 40 (SV40) chromatin was probed by treatment with single- and multiple-site bacterial restriction endonucleases. Approximately the same fraction of the chromatin DNA was cleaved by each of three different single-site endonucleases, indicating that the nucleosomes do not have unique positions with regard to specific nucleotide seq