This research was carried out aiming at evaluating the effects of nitrate and ammonium ions on nutrient accumulation, biochemical components and yield of Italian zucchini (cv. Caserta) grown in a hydroponic system under salt stress conditions. The experiment was carried out in a greenhouse utilizing an e...
Glutamine synthetase (GS), encoded by glnA, catalyzes the conversion of L-glutamate and ammonium to L-glutamine. This ATP hydrolysis driven process is the main nitrogen assimilation pathway in the nitrogen-fixing bacterium Azospirillum brasilense. The A. brasilense strain HM053 has poor GS activity and l...
RESUMEN: Los laminados vitrocerámicos ultradelgados constituyen una alternativa conservadora para la resolución de alteraciones estéticas. Sin embargo, su acondicionamiento con ácido fluorhídrico suele no estar exento de complicaciones, por lo que el uso de un sistema autograbante en base a polifluo...
The present study assessed the efficacy of formulated biocontrol agents and nitrogen fertilization on southern blight control. Antagonism test in vitro was performed to assess the inhibitory activity of Bacillus methylotrophicus and Trichoderma asperellum against the growth of Sclerotium rolfsii. Tomato ...
INTRODUCCIÓN: La reciente pandemia por SARS-CoV-2 (COVID-19) ha hecho resurgir preocupación sobre la exposición inadvertida del equipo quirúrgico a agentes infecciosos transmisibles por vía aérea durante el acto quirúrgico. El objetivo de este trabajo es describir la confección de un sistema de f...
Infecciones por Coronavirus/prevención & control,
Neumonía Viral/prevención & control,
Pandemias/prevención & control,
Procedimientos Quirúrgicos Ginecológicos/métodos,
Laparoscopía/métodos,
Betacoronavirus,
Medidas de Seguridad,
Neumoperitoneo,
Transmisión de Enfermedad Infecciosa de Paciente a Profesional/prevención & control,
Infecciones por Coronavirus/transmisión,
Neumonía Viral/transmisión,
Compuestos de Amonio,
Hipoclorito de Sodio,
Tecnología de Bajo Costo
Background: Ammonium stress is a prime limiting phenomenon that occurs during methane formation from poultry manure. It is caused by elevated ammonium nitrogen concentrations that result from substrate decomposition. The amounts of methane formed depend on the activity of methanogenic microbes. Results: ...
Anaerobiosis,
Biocombustibles,
Microbiota,
Archaea/metabolismo,
Biodiversidad,
Aves de Corral,
Methanosarcinaceae/metabolismo,
Nitrógeno,
Metano,
Compuestos de Amonio,
Estrés Fisiológico,
Consorcios Microbianos,
Cromatografía Líquida de Alta Presión,
Fermentación,
Dermatoglifia del ADN,
Reacción en Cadena de la Polimerasa,
Estiércol
Abstract Cattle manure composting was performed in an aerated vessel. Community structure and diversity of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) were investigated using polymerase chain reaction and denaturing gradient gel electrophoresis (PCR-DGGE) techniques targeting the...
Abstract Deionized ammonium (NH3) acute toxicity (LC50-96h) in Patagonian blenny juveniles (Eleginops maclovinus) was assessed. Concentrations of deionized ammonium in salt water were prepared by using 24.09 ± 2.1 g ammonium chloride (NH4Cl). Fish were exposed in triplicates to different ammonium conce...
Diversity and abundance of the denitrifying genes nirK, nirS and nosZ were investigated in cow manure compost using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and real-time quantitative PCR (qPCR), respectively. These three genes were detected in all the stages of the co...
Compostaje,
Desnitrificación/genética,
Genes Bacterianos,
Microbiología del Suelo,
Compuestos de Amonio/análisis,
Biodiversidad,
Electroforesis en Gel de Gradiente Desnaturalizante,
Concentración de Iones de Hidrógeno,
Estiércol/microbiología,
Filogenia,
Reacción en Cadena en Tiempo Real de la Polimerasa,
Temperatura
Abstract Human pressures have placed many tropical estuaries in developing countries under increased levels of stress. The Caroni Swamp Ramsar Site, the largest mangrove swamp along the west coast of Trinidad, has been subjected to high levels of anthropogenic impacts including hydrological alteration an...
Fauna Béntica/análisis,
Trinidad y Tobago,
Flora Béntica/análisis,
Actividades Humanas,
Estaciones del Año,
Poliquetos/crecimiento & desarrollo,
Contaminantes del Agua/efectos adversos,
Humedales,
Compuestos de Amonio/efectos adversos,
Ambiente,
Fauna Béntica/efectos adversos
