Mass Spectometry
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Tricotecenos em milho : otimização e avaliação de metodo analitico utilizando cromatografia a gas associada a espectrometria de massas e levantamento da incidencia em milho e em produtos de milho no estado de São Paulo / Trichothenes in corn : optimization and evaluation of analytical method using a chromatography gas mass spectometry and incidence survey in corn and corn products in the state of São Paulo
Um bom número de espécies de fungos pode, sob condições especiais, produzir metabólitos secundários tóxicos conhecidos como micotoxinas. Cerca de 20 grupos de toxinas são conhecidos hoje, porém, algumas têm recebido atenção especial devido à sua toxicidade e ampla ocorrência natural: aflatoxinas, zearalenona, ocratoxina A, fumonisinas e tricote
Publicado em: 2003
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2. Aroeira da praia: estudo farmacognÃstico e da atividade biolÃgica de Schinus terebinthifolius raddi (anacardiaceae)
The present work ment to validate traditional knowledge about Aroeira (Schinus therebenthifolium Raddi, Anacardiaceae). The evaluation between efficacy and safety of the crude extract and its terpenoid and tannic fractions was based on ANVISA Resolution RDC n 17/200 on phytotherapics. The fractions were made from bark of stems to establish a pharmacognosti
Publicado em: 2002
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3. Cladonia verticillaris (lÃquen) como biomonitor padrÃo da qualidade do ar no distrito de JaboatÃo-PE
Liquens are recognized as environmental bioindicators and biomonitors of air quality. In this research the District of JaboatÃo, Metropolitan Meso-region of Recife (MMR), Pernambuco, Brazil was selected for evaluating the air quality in that area, correlating data obtained from the biological monitors â liquens, with the results obtained in the stations of
Publicado em: 2002
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4. Mass Spectometry–Based SARS Genotyping
Public Library of Science.
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5. Application of capillary electrophoresis-electrospray ionization mass spectometry in the determination of molecular diversity.
By means of capillary electrophoresis coupled online to electrospray ionization MS, a library of theoretically 171 disubstituted xanthene derivatives was analyzed. The method allowed the purity and makeup of the library to be determined: 160 of the expected compounds were found to be present, and 12 side-products were also detected in the mixture. Due to the
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6. Fluorescently labeled pulmonary surfactant protein C in spread phospholipid monolayers.
Pulmonary surfactant, a lipid-protein complex, secreted into the fluid lining of lungs prevents alveolar collapse at low lung volumes. Pulmonary surfactant protein C (SP-C), an acylated, hydrophobic, alpha-helical peptide, enhances the surface activity of pulmonary surfactant lipids. Fluorescein-labeled SP-C (F-SP-C) (3, 6, 12 wt%) in dipalmitoylphosphatidyl
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7. Testing Models of Fatty Acid Transfer and Lipid Synthesis in Spinach Leaf Using in Vivo Oxygen-18 Labeling1
Oxygen-18 labeling has been applied to the study of plant lipid biosynthesis for the first time. [13C218O2]Acetate was incubated with spinach (Spinacia oleracea) leaves and the 18O content in fatty acid methyl esters isolated from different lipid classes measured by gas chromatography-mass spectometry. Fatty acids isolated from lipids synthesized within the
American Society of Plant Physiologists.
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8. Nontypeable Haemophilus influenzae Strain 2019 Produces a Biofilm Containing N-Acetylneuraminic Acid That May Mimic Sialylated O-Linked Glycans
Previous studies suggested that nontypeable Haemophilus influenzae (NTHI) can form biofilms during human and chinchilla middle ear infections. Microscopic analysis of a 5-day biofilm of NTHI strain 2019 grown in a continuous-flow chamber revealed that the biofilm had a diffuse matrix interlaced with multiple water channels. Our studies showed that biofilm pr
American Society for Microbiology.