Buscar
Mostrando ítems 1-10 de 2218
Detección de cambios en la cobertura vegetal de la Reserva de la Biosfera Ciénaga de Zapata
(Instituto Geografía Tropical, Tropical Geography Institute, 2010)
El proyecto de investigación logra establecer una importante relación entre las afectaciones que inciden en la conservación de la cobertura vegetal y permite pronosticar las tendencias del estado medio ambiental de la ...
Measuring land surface temperature, near-infrared and short-wave infrared reflectance for estimation of water availability in vegetation
(Elsevier, 2021-01)
The vegetation water status is a crucial variable for modelling of drought impact, vegetation productivity and water fluxes. Methods for spatial estimation of this variable still need to be improved. The integration of ...
Detection of carbamate pesticides in vegetable samples using cholinesterase-based biosensors
(Wiley-Blackwell, 1997-10-01)
Biosensors for determination of carbamates in vegetables based on five different cholinesterases as biorecognition elements and a screen-printed electrode system as an amperometric transducer were developed. Measurements ...
Detection of carbamate pesticides in vegetable samples using cholinesterase-based biosensors
(Wiley-Blackwell, 1997-10-01)
Biosensors for determination of carbamates in vegetables based on five different cholinesterases as biorecognition elements and a screen-printed electrode system as an amperometric transducer were developed. Measurements ...
Comparison of different clean-up procedures for the determination of N-methylcarbamate insecticides in vegetable matrices by high-performance liquid chromatography with UV detection
(Elsevier B.V., 1998-01-30)
Several clean-up procedures which included the use of glass chromatography columns (silica gel, alumina, Florisil, silanized Celite-charcoal), Sep-Pak cartridges and standard solutions were compared for the determination ...
Comparison of different clean-up procedures for the determination of N-methylcarbamate insecticides in vegetable matrices by high-performance liquid chromatography with UV detection
(Elsevier B.V., 1998-01-30)
Several clean-up procedures which included the use of glass chromatography columns (silica gel, alumina, Florisil, silanized Celite-charcoal), Sep-Pak cartridges and standard solutions were compared for the determination ...
Analytical procedure based on slurry sampling for determining selenium in organic vegetable samples by graphite furnace atomic absorption spectrometry
(Springer, 2009-07-01)
This paper presents a simple, fast and sensitive method to determine selenium in vegetable samples by graphite furnace atomic absorption spectrometry through the direct introduction of slurries of the samples into the ...
Analytical procedure based on slurry sampling for determining selenium in organic vegetable samples by graphite furnace atomic absorption spectrometry
(Springer, 2009-07-01)
This paper presents a simple, fast and sensitive method to determine selenium in vegetable samples by graphite furnace atomic absorption spectrometry through the direct introduction of slurries of the samples into the ...
Distribuição espacial e qualificação da cobertura vegetal do município de Natal, Rio Grande do Norte, Brasil
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM GEOGRAFIA, 2017-06-30)
The vegetal cover offers several benefits to society, but historically it has been suppressed by anthropic occupation in urban areas. The analysis of its distribution, quantification and qualification offers subsidies for ...