Biosystems Engineering
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Published on Feb 1, 2019in Biosystems Engineering 2.13
Camille Goudenhooft4
Estimated H-index: 4
(Centre national de la recherche scientifique),
Tancrède Alméras8
Estimated H-index: 8
(University of Montpellier)
+ 1 AuthorsChristophe Baley11
Estimated H-index: 11
(Centre national de la recherche scientifique)
Flax ( Linum usitatissimum L.) is a plant of industrial interest. Its fibres have traditionally been used for textile applications and more recently, for composite reinforcement. To increase fibre yields, varietal selection has been used to develop varieties having high fibre content while retaining good resistance to lodging. This selection process has led to impressively slender structures of flax compared to other herbaceous plants. The present study focuses on the mechanical stability of fla...
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Published on Apr 1, 2019in Biosystems Engineering 2.13
Irina Torres3
Estimated H-index: 3
(University of Córdoba (Spain)),
María-Teresa Sánchez20
Estimated H-index: 20
(University of Córdoba (Spain))
+ 1 AuthorsDolores Pérez-Marín22
Estimated H-index: 22
(University of Córdoba (Spain))
The relative water content (RWC) provides a measurement of the water deficit of the leaf and may indicate a degree of stress, endured under conditions of drought and high temperatures. Its measurement is therefore essential for the appropriate management of irrigation. This study sought to ascertain the viability of near infrared spectroscopy (NIRS), using a handheld portable NIR instrument, for the non-destructive and in situ determination of RWC in olive tree leaves cultivated under higher tem...
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Published on Feb 1, 2019in Biosystems Engineering 2.13
Thomas R. Butts3
Estimated H-index: 3
(University of Nebraska–Lincoln),
Liberty E. Butts1
Estimated H-index: 1
(University of Nebraska–Lincoln)
+ 3 AuthorsGreg R. Kruger16
Estimated H-index: 16
(University of Nebraska–Lincoln)
Pulse-width modulation (PWM) sprayers can improve application accuracy through flow control, turn compensation, and high-resolution overlap control by pulsing an electronically-actuated solenoid valve which controls the relative proportion of time each solenoid valve is open (duty cycle). The objective of this experiment was to identify the droplet size distribution and nozzle tip pressure when influenced by PWM duty cycle, nozzle technology, and gauge pressure to provide PWM guidelines. The exp...
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Published on Feb 1, 2019in Biosystems Engineering 2.13
Diego Chamba1
Estimated H-index: 1
(Technical University of Madrid),
Sergio Zubelzu4
Estimated H-index: 4
(Technical University of Madrid),
Luis Juana Sirgado8
Estimated H-index: 8
(Technical University of Madrid)
Abstract A novel approach for the design of drip irrigation systems is presented. The diameters of the laterals and submains were calculated by minimising an objective cost function that includes investment and operating costs of drip irrigation units. Diameters, head loss and its distribution between laterals and submain, average operating pressure head, upstream end energy head and the distribution uniformity were all deduced from an economic approach. These variables are not matched alone but...
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Published on Apr 1, 2019in Biosystems Engineering 2.13
Junduan Huang (South China Agricultural University), Wenqing Wang (South China Agricultural University), Tiemin Zhang (South China Agricultural University)
A new audio analysis-based detection method is put forward in this paper to detect avian influenza as early as possible. Because a distinctive difference exists in the short-time auto-correlation functions of recorded chicken sound and ambient noise, the former can be extracted from the record and the latter discarded. The mel-frequency cepstral coefficients (MFCC) are determined by analysing and processing the frequency domain of the extracted chicken sound signal. The coefficients serve as dis...
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Published on Mar 1, 2019in Biosystems Engineering 2.13
Guilin Shan3
Estimated H-index: 3
(China Agricultural University),
Yurui Sun7
Estimated H-index: 7
(China Agricultural University)
+ 4 AuthorsZhong-Yi Wang6
Estimated H-index: 6
(China Agricultural University)
The HYDRUS-2D simulation software has been used for irrigation management. Its performance under realistic irrigation regimes requires evaluation with new methodologies that integrate larger soil volumes, because soil water content is highly variable in time, space and scale. We compare direct measurements in a sloping field environment under drip irrigation with simulation using HYDRUS-2D. An advanced mobile sensor technology is used to track the dynamics of soil water content, and thus of unsa...
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Published on Feb 1, 2019in Biosystems Engineering 2.13
Shamim Ahamed1
Estimated H-index: 1
(Bangladesh Agricultural University),
Huiqing Guo3
Estimated H-index: 3
(University of Saskatchewan),
Karen K. Tanino17
Estimated H-index: 17
(University of Saskatchewan)
Reducing heating cost is a major challenge for greenhouses growers especially those located in cold regions. Several techniques have been applied to reduce greenhouse heating costs in winter season. This study presents a comprehensive review of different energy saving techniques that can be applied to reduce heating costs including energy-efficient greenhouse designs, use of energy-efficient covers, use of thermal curtains, energy-efficient management of indoor microclimates, selection of energy...
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Published on Jan 1, 2019in Biosystems Engineering 2.13
Nasim Reza1
Estimated H-index: 1
(Chonnam National University),
In Seop Na1
Estimated H-index: 1
(Chosun University)
+ 1 AuthorsKyeong-Hwan Lee6
Estimated H-index: 6
(Chonnam National University)
Abstract Predicting the harvest yield enables farm practices to be modified throughout the growing season, with potential to increase the final yield. Unmanned aerial vehicle (UAV) based remote sensing is a promising way to estimate crop yields. In this study, rice yield was estimated by segmenting grain areas using low altitude RGB images collected using a rotary-wing type UAV. In particular, an image processing method that combines K-means clustering with a graph-cut (KCG) algorithm was propos...
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