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- Author:
- Dai, Xiang; Xu, Youlin; Zheng, Jiaqiang; Song, Haichao
- Source:
- Biosystems engineering 2019 v.180 pp. 59-69
- ISSN:
- 1537-5110
- Subject:
- autocorrelation; image analysis; mixers; mixing; mixing ratio; nozzles; periodicity; pesticides; pipelines; pumps; spraying
- Abstract:
- ... The injection of pesticide directly into spray nozzles results in concentration variations, both periodic discontinuities and pulses, caused by the use of injection pumps and solenoid valves. Such variations can lead to inaccurate application of pesticide. To avoid using long pipelines, long lag times and inaccurate application, efficient mixers are required to shorten the distance between the inj ...
- DOI:
- 10.1016/j.biosystemseng.2019.01.012
-
https://dx.doi.org/10.1016/j.biosystemseng.2019.01.012
- Author:
- Ortiz, Coral; Blanes, Carlos; Mellado, Martín
- Source:
- Biosystems engineering 2019 v.180 pp. 161-167
- ISSN:
- 1537-5110
- Subject:
- cherimoyas; firmness; fruit quality; fruits; models; prediction; prototypes; ripening; Spain
- Abstract:
- ... The quality of cherimoya fruit is reduced by the rapid deterioration of firmness during ripening. Different methods have been developed for the measurement of firmness. The objective of this study was to use a developed impact prototype for the non-destructive assessment and prediction of cherimoya fruit firmness. The prototype has an ultra-low pressure pneumatic jamming rod used to copy the irreg ...
- DOI:
- 10.1016/j.biosystemseng.2019.02.003
-
https://dx.doi.org/10.1016/j.biosystemseng.2019.02.003
- Author:
- Su, Wen-Hao; Bakalis, Serafim; Sun, Da-Wen
- Source:
- Biosystems engineering 2019 v.180 pp. 70-86
- ISSN:
- 1537-5110
- Subject:
- algorithms; chemometrics; cooking; cooking quality; discriminant analysis; hyperspectral imagery; least squares; models; near-infrared spectroscopy; prediction; sweet potatoes; tubers; wavelengths
- Abstract:
- ... Near infrared (NIR) hyperspectral imaging and Fourier transform mid infrared (FT-MIR) microspectroscopy were explored in the current study to investigate how constituent elements of sweet potato change during cooking, and in the meantime, to identify sweet potato varieties. Partial least square discriminant analysis (PLSDA) model was established to classify varieties of sweet potato, and the corre ...
- DOI:
- 10.1016/j.biosystemseng.2019.01.005
-
https://dx.doi.org/10.1016/j.biosystemseng.2019.01.005
- Author:
- Palander, Teijo S.; Eronen, Jyry P.; Peltoniemi, Niklas P.; Aarnio, Aleksi I.; Kärhä, Kalle; Ovaskainen, Heikki K.
- Source:
- Biosystems engineering 2019 v.180 pp. 36-49
- ISSN:
- 1537-5110
- Subject:
- Picea abies; Pinus sylvestris; algorithms; artificial intelligence; computer vision; decision support systems; harvesters; image analysis; logging; monitoring; photogrammetry; regression analysis; roundwood; texture; trees; wood quality; Finland
- Abstract:
- ... Monitoring systems were applied to a single-grip harvester logging cut-to-length roundwood in Finland. Using single-grip harvesters may results in stem damages to the remaining trees during thinning, thereby reducing the growth and wood quality of the trees. These concerns justify the need for a decision support system to monitor stem damage in sustainable wood supply. One method to carry out harv ...
- DOI:
- 10.1016/j.biosystemseng.2019.01.011
-
https://dx.doi.org/10.1016/j.biosystemseng.2019.01.011
- Author:
- Torres, Irina; Sánchez, María-Teresa; Benlloch-González, María; Pérez-Marín, Dolores
- Source:
- Biosystems engineering 2019 v.180 pp. 50-58
- ISSN:
- 1537-5110
- Subject:
- Olea europaea; crops; decision making; drought; equations; groves; irrigation rates; irrigation water; leaves; model validation; models; near-infrared spectroscopy; olives; prediction; spectral analysis; statistical analysis; temperature; water content; Mediterranean region
- Abstract:
- ... 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 t ...
- DOI:
- 10.1016/j.biosystemseng.2019.01.016
-
https://dx.doi.org/10.1016/j.biosystemseng.2019.01.016
- Author:
- Huang, Junduan; Wang, Wenqing; Zhang, Tiemin
- Source:
- Biosystems engineering 2019 v.180 pp. 16-24
- ISSN:
- 1537-5110
- Subject:
- autocorrelation; avian influenza; chickens; support vector machines
- Abstract:
- ... 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 ...
- DOI:
- 10.1016/j.biosystemseng.2019.01.015
-
https://dx.doi.org/10.1016/j.biosystemseng.2019.01.015
- Author:
- Xu, Chengpeng; Ye, Shengying; Cui, Xiaolei; Song, Xianliang; Xie, Xueting
- Source:
- Biosystems engineering 2019 v.180 pp. 87-95
- ISSN:
- 1537-5110
- Subject:
- Weibull statistics; aflatoxin B1; catalysts; glass; light intensity; models; peanut oil; photocatalysis; photolysis; titanium dioxide; toxicity
- Abstract:
- ... Aflatoxin B1 (AFB1) is the most common and toxic among the aflatoxin group. Improper storage of both raw and processed peanut oil makes it susceptible to AFB1 production. Here, a closed-loop photocatalytic reactor consisting of a glass tube coated with TiO2 as a catalyst has been developed to study the photocatalytic detoxification of AFB1 in peanut oil. The removal rates of AFB1 in the photocatal ...
- DOI:
- 10.1016/j.biosystemseng.2019.01.018
-
https://dx.doi.org/10.1016/j.biosystemseng.2019.01.018
- Author:
- Zeng, Zhiwei; Chen, Ying
- Source:
- Biosystems engineering 2019 v.180 pp. 25-35
- ISSN:
- 1537-5110
- Subject:
- conservation tillage; kinetic energy; models; oat straw; soil
- Abstract:
- ... Understanding residue and soil behaviour under the impact of tillage tools is critical for designing tools for conservation tillage. A soil-tool-residue interaction model was developed for a sweep and oat straw using the discrete element method. Soil, sweep, and straw were modelled using spherical particles, walls, and clumps respectively. A virtual field consisting of two layers including a soil ...
- DOI:
- 10.1016/j.biosystemseng.2019.01.009
-
https://dx.doi.org/10.1016/j.biosystemseng.2019.01.009
- Author:
- Lu, Yuzhen; Lu, Renfu
- Source:
- Biosystems engineering 2019 v.180 pp. 1-15
- ISSN:
- 1537-5110
- Subject:
- absorption; apples; foods; fruit quality; fruits; image analysis; light scattering; lighting; reflectance
- Abstract:
- ... Structured-illumination reflectance imaging (SIRI), compared to conventional uniform illumination based modalities, provides a new means for defect detection of fruit. The capability of SIRI for defect detection, however, mainly depends on its image resolution and contrast and depth-resolving features. This study was therefore aimed at providing theoretical and experimental analyses of these featu ...
- DOI:
- 10.1016/j.biosystemseng.2019.01.014
-
https://dx.doi.org/10.1016/j.biosystemseng.2019.01.014