Incubations Conditions
Mostrando 1-12 de 98 artigos, teses e dissertações.
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1. Potential effects of mechanically removing macrophytes on the phytoplankton community of a subtropical reservoir
ABSTRACT Intensive growth of aquatic macrophytes interferes with water quality and ecosystem dynamics worldwide. Although mechanically removing macrophytes is the most commonly used method for their eradication, it can also cause undesirable disturbances in aquatic reservoir communities. We performed laboratory incubations of phytoplankton sampled before and
Acta Bot. Bras.. Publicado em: 02/07/2018
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2. Cellulase activity and dissolved organic carbon release from lignocellulose macrophyte-derived in four trophic conditions
Abstract Considering the importance of lignocellulose macrophyte-derived for the energy flux in aquatic ecosystems and the nutrient concentrations as a function of force which influences the decomposition process, this study aims to relate the enzymatic activity and lignocellulose hydrolysis in different trophic statuses. Water samples and two macrophyte spe
Braz. J. Microbiol.. Publicado em: 2016-06
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3. Radiolabeled nano-peptides show specificity for an animal model of human PC3 prostate cancer cells
OBJECTIVES: Cancer has been investigated using various pre-targeting techniques or models focusing on radiobombesin analogues; however, both are not offered together. In this study, nano-bombesin labeling by a pre-targeting system was undertaken to develop an alternative approach for prostate tumor treatment. METHODS: A two-step pre-targeting system utilizin
Clinics. Publicado em: 2011
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4. Qualidade e decomposiÃÃo de materiais orgÃnicos presentes em propriedades rurais do semi-Ãrido / Quality and decomposition os organic materials found in farms of the semi-arid region of ne Brazil / Qualidade e decomposiÃÃo de materiais orgÃnicos presentes em propriedades rurais do semi-Ãrido / Quality and decomposition os organic materials found in farms of the semi-arid region of ne Brazil
Owners of small farms in the semi-arid region of NE Brazil usually do not use chemical fertilizers to ameliorate soil fertility. Therefore, the nutrients supply for their crops have to rely on soil organic matter mineralization or, in some cases, on the fertilization with animal manure (mostly from cattle or goats). However, the manure produced in these farm
Publicado em: 2009
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5. Atividade enzimática, cinética e modelagem matemática da decomposição de Ultricularia breviscapa da lagoa do Óleo (Estação Ecológica de Jataí, Luiz Antônio - SP).
This work approached the enzymatic activities, kinetics and mathematical modeling of the decomposition of Utricularia breviscapa from leo lagoon (21 36 S and 47 49 W), Luiz Antonio, SP. The experiments described the decomposition in function of temperature, availability of oxygen and carbon source. Samples of this macrophyte and water were collected in the o
Publicado em: 2003
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6. Sterility test: analytical validation and proposal for results improvement / Esterilidade: validação de metodologia e propostas de otimização de resultados
Este trabalho consiste em um estudo sobre os parâmetros para validação de metodologia para teste de esterilidade. As qualificações das instalações e dos operadores são consideradas etapas integrantes na validação analítica, cuja finalidade abrange minimizar a ocorrência de resultados falso-positivos e falso-negativos. Foram comparadas as eficiên
Publicado em: 2001
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7. The synthesis and release of acetylcholine in normal and denervated rat diaphragms during incubation in vitro
1. Normal and denervated rat diaphragms and neural (central) and aneural (peripheral) parts of normal diaphragms were incubated under several different conditions likely to affect the metabolism of acetylcholine (ACh), with the aim of discovering specific features of the control of neural and aneural ACh in the muscle. The concentrations of ACh in the tissue
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8. Biodegradation of cresol isomers in anoxic aquifers.
The biodegradation of o-, m-, and p-cresol was examined in material obtained from a shallow anaerobic alluvial sand aquifer. The cresol isomers were preferentially metabolized, with p-cresol being the most easily degraded. m-Cresol was more persistent than the para-isomer, and o-cresol persisted for over 90 days. Biodegradation of cresol isomers was favored
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9. The incorporation of acetate and palmitate into lipids by human platelets
The optimal conditions for the incorporation of acetate-1-14C and palmitic acid-1-14C into platelet lipids have been described. In buffer incubations with acetate there was a sharp pH optimum at 6.8; in plasma incubations, there was a broad pH optimum between 6.8-7.4. Maximal incorporation of acetate occurred at a final concentration of 1.5 mmoles/liter. In
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10. Assessment of Reductive Acetogenesis with Indigenous Ruminal Bacterium Populations and Acetitomaculum ruminis
The objective of this study was to evaluate the role of reductive acetogenesis as an alternative H2 disposal mechanism in the rumen. H2/CO2-supported acetogenic ruminal bacteria were enumerated by using a selective inhibitor of methanogenesis, 2-bromoethanesulfonic acid (BES). Acetogenic bacteria ranged in density from 2.5 × 105 cells/ml in beef cows fed a
American Society for Microbiology.
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11. Light Conditions Affect the Measurement of Oceanic Bacterial Production via Leucine Uptake
The effect of irradiance in the range of 400 to 700 nm or photosynthetically active radiation (PAR) on bacterial heterotrophic production estimated by the incorporation of 3H-leucine (referred to herein as Leu) was investigated in the northwestern Mediterranean Sea and in a coastal North Atlantic site, with Leu uptake rates ranging over 3 orders of magnitude
American Society for Microbiology.
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12. Influence of Alternate Electron Acceptors on the Metabolic Fate of Hydroxybenzoate Isomers in Anoxic Aquifer Slurries
The biodegradation of hydroxybenzoate isomers was investigated with samples obtained from two sites within a shallow anoxic aquifer. The metabolic fates of the substrates were compared in denitrifying, sulfate-reducing, and methanogenic incubations. Under the latter two conditions, phenol was detected as a major intermediate of p-hydroxybenzoate, but no meta