Purity Measure
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Classificação de dados estacionários e não estacionários baseada em grafos / Graph-based classification for stationary and non-stationary data
Métodos baseados em grafos consistem em uma poderosa forma de representação e abstração de dados que proporcionam, dentre outras vantagens, representar relações topológicas, visualizar estruturas, representar grupos de dados com formatos distintos, bem como, fornecer medidas alternativas para caracterizar os dados. Esse tipo de abordagem tem sido cad
Publicado em: 2011
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2. Propriedades fisicas de operações gaussianas sobre estados gaussianos emaranhados / Physical properties of gaussian operations over entangled gaussian states
We study quantum Gaussian states and the physical properties associated to operations over such class of states, which preserve the respective Gaussian nature. General properties of global covariance matrices representing two-mode bipartite Gaussian states can be decomposed into properties of local covariance matrices and their Schur complements. We demonstr
Publicado em: 2007
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3. Simulação, modelagem e analise de reator de polimerização de eteno em solução usando catalisador Ziegler-Natta / Simulation, modeling and analysis of ethylene polymerization reactor in solution using Ziegler-Natta catalyst
Polymerization processes are, generally, very complexes due to the high number of parallel reactions and chemical species in reactional medium. Besides, the polymerization reaction engineering may not only attain yield and purity specifications, but also obtain products with certain processability characteristic and final properties that are, in practice, th
Publicado em: 2005
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4. Obtenção e caracterização de filmes finos ferromagneticos das fases FE17TR21 TR=Nd, Pr e Sm
Films of the Fe17R2Nx phases, R= rare-earthsf are interesting because of the good magnetic and properties these materiais have in bulk form, mainly for R from = Sm, that show axial magnetic anisotropy .In film form these good magnetic properties are maintained, and films can show perpendicular anisotropy high coercivities. For Pr and Nd the bulk material was
Publicado em: 1997
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5. PROT-EX : AN EXPERT SYSTEM FOR SELECTING THE SEQUENCE OF PROCESSES FOR THE DOWNSTREAM PURIFICATION OF PROTEINS
This work presents the creation of an expert system prototype that suggests a sequence of operations for the downstream processing of proteins. A knowledge base with around six hundred logical rules was developed, structured to emulate the human reasoning. The process is divided into two parts: recovery, comprising the operations used from the end of ferment
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 199607
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6. EVAPORATION RESISTANCE AS A SENSITIVE MEASURE OF THE PURITY AND MOLECULAR STRUCTURE OF MONOLAYERS*
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7. Simplification of urinary aldosterone measurement by radioimmunoassay
An anti-aldosterone serum has been used to measure urinary aldosterone concentration. A single stage of paper chromatography provides an extract of sufficient purity. Further purification by additional chromatography in a different solvent system only improves the purity by 3% ± 8 (SD). Blanks are negligible and recovery of added aldosterone is 104% ± 10 (
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8. Chromosome measurement and sorting by flow systems.
A flow microfluorometer was used to measure metaphase chromosomes in suspension at rates up to 100,000 per min. Chromosomes from cells of the Chinese hamster M3-1 cell line were isolated, stained for DNA with the fluorescent dye ethidium bromide, and analyzed for DNA content. Nine distinct peaks were resolved that correspond well with independent chromosomal
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9. Purification of human erythroid colony-forming units and demonstration of specific binding of erythropoietin.
Morphological and biochemical studies of human colony-forming units-erythroid (CFU-E) have been hindered by their extreme rarity. Since burst-forming units-erythroid (BFU-E) develop into CFU-E, we used normal human blood BFU-E to generate large numbers of highly purified CFU-E in vitro. Using density centrifugation, sheep erythrocyte rosetting, surface immun
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10. A quality control algorithm for DNA sequencing projects.
Heterologous DNA sequences from rearrangements with the genomes of host cells, genomic fragments from hybrid cells, or impure tissue sources can threaten the purity of libraries that are derived from RNA or DNA. Hybridization methods can only detect contaminants from known or suspected heterologous sources, and whole library screening is technically very dif
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11. Radioimmunoprecipitation Assay for Quantitation of Serum Antibody to the Hemagglutinin of Type A Influenza Virus
A double-antibody radioimmunoprecipitation (RIP) assay has been developed to provide a sensitive and specific measure of antibody to hemagglutinins of H3N2 influenza viruses. Chloramine T was used to radiolabel purified hemagglutinins to high specific activity without loss of antigenicity. The purity of the labeled hemagglutinin was confirmed by sodium dodec
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12. src Genes of Ten Rous Sarcoma Virus Strains, Including Two Reportedly Transduced from the Cell, Are Completely Allelic; Putative Markers of Transduction Are Not Detected
The src genes of different Rous sarcoma virus (RSV) strains have been reported to be highly conserved by some investigators using RNA-cDNA hybridization, whereas others using oligonucleotide, peptide, and serological analyses have judged src genes to be variable in 30 to 50% of the respective markers. Moreover, distinctive src oligonucleotides and peptides o