Omega Measurement
Mostrando 1-12 de 17 artigos, teses e dissertações.
-
1. OPTIMIZATION OF A PORTFOLIO OF ELECTRIC ENERGY SWAPS IN BRAZIL USING THE OMEGA MEASUREMENT WITH CVAR CONSTRAINTS / OTIMIZAÇÃO DE UMA CARTEIRA DE SWAPS DE ENERGIA ELÉTRICA NO BRASIL, USANDO A MEDIDA ÔMEGA COM RESTRIÇÃO DE CVAR
O mercado brasileiro de energia elétrica é composto basicamente de matrizes hidroelétricas e termoelétricas, sendo que seu fornecimento pode ser contratado em dois ambientes, um de contratação regulamentada e outro livre. Dessa forma o apreçamento da energia é algo complexo e com incertezas, pois seu modelo leva em consideração comportamentos de af
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/04/2012
-
2. OPTIMIZATION OF ELECTRIC POWER SWAP IN BRASIL USING THE OMEGA MEASUREMENT / DECISÃO ÓTIMA EM SWAPS DE ENERGIA ELÉTRICA NO BRASIL UTILIZANDO A MEDIDA OMEGA
que torna complexo o processo de formação do preço da energia, já que o mesmo depende do comportamento das afluências futuras, que é altamente incerto. Em função dessa incerteza, o preço pode apresentar comportamento volátil, se tornando um fator de alto risco para os agentes do setor elétrico. No entanto, é comum que comercializadoras utilizem o
Publicado em: 2010
-
3. DECISION OF THE SEASONALIZATION OF ELECTRICITY SUPPLY CONTRACTS BASED ON THE OPTIMIZATION OF THE OMEGA MEASUREMENT / DECISÃO DE SAZONALIZAÇÃO DE CONTRATOS DE FORNECIMENTO DE ENERGIA ELÉTRICA ATRAVÉS DA OTIMIZAÇÃO DA MEDIDA ÔMEGA
Desde o final dos anos 90, o setor elétrico brasileiro vem passando por grandes reformas, cujos principais objetivos são aumentar a competição e a eficiência na alocação de recursos. Em função deste aumento de eficiência na alocação de recursos e devido ao consumo sazonal de energia no Brasil, foi estabelecida uma flexibilidade para as hidrelétr
Publicado em: 2009
-
4. A CAMADA DE GORDURA DAS TONINHAS, PONTOPORIA BLAINVILLEI (MAMMALIA, CETACEA) NO LITORAL SUL DO RS: VARIAÇÃO NA ESPESSURA E NA COMPOSIÇÃO DE ÁCIDOS GRAXOS EM RESPOSTA A FATORES AMBIENTAIS E FISIOLÓGICOS.
In order to investigate the usefullness of blubber thickness to estimate the body fat condition in Pontoporia blainvillei, axillary girth measurements were taken from dorsal, ventral and lateral regions, between the pectoral flipper and the dorsal fin. Blubber measurements were obtained for 116 franciscana dolphins, accidentally caught by the coastal artisan
Publicado em: 2005
-
5. Electrical resistance across the blood-brain barrier in anaesthetized rats: a developmental study.
1. Ion permeability of the blood-brain barrier was studied by in situ measurement of transendothelial electrical resistance in anaesthetized rats aged between 17 days gestation and 33 days after birth, and by electron microscopic examination of lanthanum permeability in fetal and neonatal rats aged up to 10 days old. 2. The blood-brain barrier in 17- to 20-d
-
6. Inhibition of calcium currents and exocytosis by Lambert-Eaton syndrome antibodies in human lung cancer cells.
1. Human small-cell lung cancer (SCLC) cells are believed to express the antigens responsible for the production of pathological antibodies in the Lambert-Eaton syndrome (LES), a Ca2+ channel disorder in which quantal transmitter release from the motor nerve terminal is impaired. Whole-cell patch-clamp techniques were used to study the voltage-dependent Ca2+
-
7. Construction and characterization of chromosomal insertional mutations of the Pseudomonas aeruginosa exoenzyme S trans-regulatory locus.
Exoenzyme S is an ADP-ribosyltransferase produced by Pseudomonas aeruginosa. Synthesis of exoenzyme S depends on an intact trans-regulatory locus encoding three protein products, ExsC, ExsB, and ExsA. To identify the phenotype of ExsC, -B, and -A mutants in exoenzyme S production, specific insertional mutations with the streptomycin resistance-encoding omega
-
8. Covalent immobilization of native biomolecules onto Au(111) via N-hydroxysuccinimide ester functionalized self-assembled monolayers for scanning probe microscopy.
We have worked out a procedure for covalent binding of native biomacromolecules on flat gold surfaces for scanning probe microscopy in aqueous buffer solutions and for other nanotechnological applications, such as the direct measurement of interaction forces between immobilized macromolecules, of their elastomechanical properties, etc. It is based on the cov
-
9. Construction and characterization of Pseudomonas aeruginosa protein F-deficient mutants after in vitro and in vivo insertion mutagenesis of the cloned gene.
Mutants with insertion mutations in the Pseudomonas aeruginosa protein F (oprF) gene were created in vivo by Tn1 mutagenesis of the cloned gene in Escherichia coli and in vitro by insertion of the streptomycin resistance-encoding omega fragment into the cloned gene, followed by transfer of the mutated protein F gene back to P. aeruginosa. Homologous recombin
-
10. Membrane properties of nociceptive neurones in lamina II of lumbar spinal cord in the cat.
1. Intracellular recordings were made from neurones in lamina II of the dorsal horn of the lumbar spinal cord of the cat, and the electrotonic responses to brief rectangular current pulses of up to 0.5 nA passed through the recording microelectrode measured. 2. The majority of penetrations were associated with input resistances lower than 70 M omega, low res
-
11. Miniature endplate current rise times less than 100 microseconds from improved dual recordings can be modeled with passive acetylcholine diffusion from a synaptic vesicle.
We recorded miniature endplate currents (mEPCs) using simultaneous voltage clamp and extracellular methods, allowing correction for time course measurement errors. We obtained a 20-80% rise time (tr) of approximately 80 micros at 22 degrees C, shorter than any previously reported values, and tr variability (SD) with an upper limit of 25-30 micros. Extracellu
-
12. The passive electrical properties of guinea-pig ventricular muscle as examined with a voltage-clamp technique.
1. A voltage-clamp technique was developed for stable recording of small currents in guinea-pig ventricular muscle. Small cylindrical preparations were impaled with three micro-electrodes, one for measuring the feed-back potential and two for injecting current. 2. The longitudinal potential profile resulting from current injection at one point was measured.