Propagation of ultrasonic guided waves in plant leaves

Collazos-Burbano, David; Ealo, Joao L.; Villagrán-Munı́z, M.

doi:10.1088/1361-6463/abc991

Cited by 6 publications

(4 citation statements)

References 35 publications

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“…Donde el 86% de las aplicaciones son de uso genérico, y apenas un estudio se especializa en fincas de café (ver figura 5). Este estudio fue desarrollado por Colombia y consistió en un detector de plagas utilizando el internet de las cosas y los sensores para el monitor del café arábico [23].…”

Section: Resultsunclassified

Proposed Open Systems Model and Intelligent Agriculture in Coffee Farms within the Harvesting Process

Ordonez-Avila¹,

Martínez-Rangel²

2022

Proceedings of the 2nd LACCEI International Multiconference on Entrepreneurship, Innovation and Regional Development (LEIRD 202

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The countries that produce the most coffee worldwide have an economy based on agribusiness and it is noteworthy that some of them apply various methods based on Industry 4.0 in their processes. However, in coffee production these technologies have a very limited application. The use of open systems makes it possible to talk about intelligent agriculture, which implements various technologies to improve some processes. This research work identifies the different technologies of Industry 4.0 that could be used in agriculture by the leading countries in coffee production as proposed in this research work. The development of the theoretical and methodological framework allows identifying three general steps in the management of information in this area: generation, grouping and visualization. After the theoretical review, the main trends of these countries with signs of intelligent agriculture are presented as results, given that they apply Industry 4.0 technologies. To visualize the impact that these technologies can have on coffee farms, the open systems model of Katz & Kan is proposed. The application of this model will allow the integration of Industry 4.0 within coffee farms. Finally, it is concluded that the most used technology is the internet of things and sensors, which many of the authors used together, while robotics is the least implemented. By implementing these technologies, the authors showed benefits in crop monitoring, irrigation systems and management systems.

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Section: Resultsunclassified

Proposed Open Systems Model and Intelligent Agriculture in Coffee Farms within the Harvesting Process

Ordonez-Avila¹,

Martínez-Rangel²

2022

Proceedings of the 2nd LACCEI International Multiconference on Entrepreneurship, Innovation and Regional Development (LEIRD 202

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“…To study plant structure, standard methods include dye tracing, microscopy techniques, X-ray tomography [ 17 , 18 ], neutron radiography [ 19 – 21 ], air-coupled ultrasound [ 22 ], laser-based guided waves [ 23 ], and 2D-light transmission [ 24 , 25 ]. Dye tracing has been used to study plant structure for almost a century [ 26 ], and functions by staining certain anatomical structures, and the distribution of dyes can be observed either macroscopically or under the microscope.…”

Section: Introductionmentioning

confidence: 99%

“…Air-coupled sensors allow this method to be performed without coming into contact with the sample [ 22 ]. Laser-based methods using guided waves can give information on structure by studying the propagation of pulsed laser-induced waves within the sample [ 23 ]. The mechanical properties of plants that can be elucidated via both guided wave techniques and air-coupled ultrasound can be linked to plant water status.…”

Section: Introductionmentioning

confidence: 99%

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Towards portable MRI in the plant sciences

Blystone,

Nuixe,

Traoré

et al. 2024

Plant Methods

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Plant physiology and structure are constantly changing according to internal and external factors. The study of plant water dynamics can give information on these changes, as they are linked to numerous plant functions. Currently, most of the methods used to study plant water dynamics are either invasive, destructive, or not easily accessible. Portable magnetic resonance imaging (MRI) is a field undergoing rapid expansion and which presents substantial advantages in the plant sciences. MRI permits the non-invasive study of plant water content, flow, structure, stress response, and other physiological processes, as a multitude of information can be obtained using the method, and portable devices make it possible to take these measurements in situ, in a plant’s natural environment. In this work, we review the use of such devices applied to plants in climate chambers, greenhouses or in their natural environments. We also compare the use of portable MRI to other methods to obtain the same information and outline its advantages and disadvantages.

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Non-contact detection of hidden damages in dispersive media using the instantaneous phase

Collazos-Burbano,

Ealo,

Orrego-Gonzalez

2023

J Braz. Soc. Mech. Sci. Eng.

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The assessment of dispersive media may become a challenge due to the high attenuation ratios, anisotropy and geometrical particularities of the specimen under study. Besides, non-contact methods that preserve the integrity of samples are needed when some degree of purity is required, e.g., when water immersion is not allowed, and the direct contact is not feasible. In this work, we study composite plates, in which acoustic dispersion is present. We use a non-contact hybrid optoacoustic system to implement the experimental setup that makes it possible the detection of the non-exposed damages of the samples. Different relevant aspects, such as cost, maximum frequency achieved, bandwidth, sensitivity, signal-to-noise ratio and spatial resolution were considered before setting the experimental configuration. Though dispersion curves are reconstructed, we emphasize the use of the instantaneous information of signals to detect the faults. Moreover, the instantaneous phase front of the acoustic field becomes a relevant complementary tool for ultrasonic inspection and characterization of dispersive media. In particular, it highlights hidden characteristics which are not visible with other commonly-used representations, namely, the instantaneous amplitude, the time-frequency distributions or the dispersion curves widely employed in non-destructive testing. This work provides an alternative approach to study highly attenuating media where the signal-to-noise ratio is a challenge, and the available scanning path is limited, e.g., layered and poroelastic media such as biological tissues.

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Propagation of ultrasonic guided waves in plant leaves

Cited by 6 publications

References 35 publications

Proposed Open Systems Model and Intelligent Agriculture in Coffee Farms within the Harvesting Process

Proposed Open Systems Model and Intelligent Agriculture in Coffee Farms within the Harvesting Process

Towards portable MRI in the plant sciences

Non-contact detection of hidden damages in dispersive media using the instantaneous phase

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