Results 21 to 30 of about 129,172 (353)

Test of airborne fluorometer over land surfaces and geologic materials [PDF]

, 1970
Response of an experimental Fraunhofer line discriminator to a wide range of surficial deposits common in deserts and semideserts was tested in the laboratory and from an H-19 helicopter.
Hemphill, W. R., Stoertz, G. E.
core   +2 more sources

Análises de fluorescência e consumo de água em Brachiaria decumbens após aplicação de herbicidas em pós-emergência Analysis of fluorescence and water consumption in Brachiaria decumbens after herbicide application in post-emergence

Planta Daninha, 2011
A análise da fluorescência da clorofila vem sendo largamente utilizada no entendimento dos mecanismos da fotossíntese propriamente dito, bem como na avaliação da capacidade fotossintética alterada com a aplicação de herbicidas.
R Araldi, M Girotto, E.D Velini, L Tropaldi, I.P.F Silva, C.A Carbonari   +5 more
doaj   +1 more source

Features and applications of a field imaging chlorophyll fluorometer to measure stress in agricultural plants

Precision Agriculture, 2020
Most non-destructive methods for plant stress detection do not measure the primary stress response but reactions of processes downstream of primary events.
A. Linn, Alexander K. Zeller, E. Pfündel, R. Gerhards   +3 more
semanticscholar   +1 more source

Avaliação da intoxicação de cultivares de cana-de-açúcar e I. grandifolia ao amicarbazone Evaluation of intoxication of sugarcane cultivars and I. grandifolia by amicarbazone

Planta Daninha, 2011
O objetivo deste trabalho foi avaliar a intoxicação de planta daninha e cultivares de cana-de-açúcar ao amicarbazone. Para isso, utilizou-se Ipomoea grandifolia como planta daninha representante e os cultivares de cana-de-açúcar PO8862, SP80 3280 e RB83 ...
R Araldi, E.D Velini, M Girotto, C.A Carbonari, G.L.G.C Gomes, M.L.B Trindade   +5 more
doaj   +1 more source

Rapid Bacterial Detection and Identification of Bacterial Strains Using Machine Learning Methods Integrated With a Portable Multichannel Fluorometer

IEEE Access, 2023
Rapid and sensitive bioburden detection is of paramount importance in different applications including public health, and food and water safety. To overcome the traditional limitations of bacterial detection i.e., lengthy culture time, and complicated ...
Md Sadique Hasan, Chad Sundberg, Hasibul Hasan, Yordan Kostov, Xudong Ge, Fow-Sen Choa, Govind Rao   +6 more
doaj   +1 more source

Assessment of field fluorometers

Water Science and Technology, 2014
Two field fluorometers, devoted either to natural organic matter (NOM) or to tryptophan-like fluorescing substances, were tested for the characterization of a large set of water samples (n = 263) impacted to various degrees by untreated or poorly treated urban sewage. Both fluorometers yielded consistent results when testing discrete samples.
A, Gutierrez, Y, Zhang, A, Assaad, X, France, N, Adouani, M N, Pons   +5 more
openaire   +2 more sources

In situ Measurements of Phytoplankton Fluorescence Using Low Cost Electronics

Sensors, 2013
Chlorophyll a fluorometry has long been used as a method to study phytoplankton in the ocean. In situ fluorometry is used frequently in oceanography to provide depth-resolved estimates of phytoplankton biomass.
Dana L. Wright, Thomas Leeuw, Emmanuel S. Boss   +2 more
doaj   +1 more source

A novel, low-cost microfluidic device with an integrated filter for rapid, ultrasensitive, and high-throughput bioburden detection

Scientific Reports, 2023
Rapid and accurate bioburden detection has become increasingly necessary for food, health, pharmaceutical and environmental applications. To detect bioburden accurately, and in a highly sensitive manner, we have fabricated a novel microfluidic device ...
Md. Sadique Hasan, Chad Sundberg, Michael Tolosa, Abhay Andar, Xudong Ge, Yordan Kostov, Govind Rao   +6 more
doaj   +1 more source

Eucalyptus and Ipomoea nil phytotoxicity after herbicide application

Revista Brasileira de Engenharia de Biossistemas, 2023
The presence of weeds in forest estates is considered one of the biggest problems in the implantation, maintenance, and renovation of eucalyptus plantations. This research aims to evaluate the phytotoxicity of herbicides on eucalyptus and I. nil.
Ilca Puertas de Freitas e Silva, Josué Ferreira Silva Junior, Caio Antonio Carbonari , Edivaldo Domingues Velini , Rosilaine Araldi de Castro , Leandro Tropaldi , João Domingos Rodrigues   +6 more
doaj   +1 more source

Subsurface chlorophyll maxima reduce the performance of non-photochemical quenching corrections in the Southern Ocean

Frontiers in Marine Science
Non-photochemical quenching (NPQ) within phytoplankton cells often causes the daytime suppression of chlorophyll fluorescence in the Southern Ocean. This is problematic and requires accurate correction when chlorophyll fluorescence is used as a proxy for
Kimberlee Baldry, Peter G. Strutton, Peter G. Strutton, Peter G. Strutton, Nicole A. Hill, Nicole A. Hill, Philip W. Boyd, Philip W. Boyd   +7 more
doaj   +1 more source