Biosystems Engineering最新文献

筛选
英文 中文
Enhancing the anti-clogging performance of emitters in drip irrigation systems based on Bacillus subtilis strain DSM 10 and controlled replacement cycles
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-26 DOI: 10.1016/j.biosystemseng.2025.03.002
Naimin Kong , Xuefeng Qiu , Qi Wang , Zhongdong Wu , Jiandong Wang , Zhanming Tan , Haitao Wang , Qinghai He
{"title":"Enhancing the anti-clogging performance of emitters in drip irrigation systems based on Bacillus subtilis strain DSM 10 and controlled replacement cycles","authors":"Naimin Kong ,&nbsp;Xuefeng Qiu ,&nbsp;Qi Wang ,&nbsp;Zhongdong Wu ,&nbsp;Jiandong Wang ,&nbsp;Zhanming Tan ,&nbsp;Haitao Wang ,&nbsp;Qinghai He","doi":"10.1016/j.biosystemseng.2025.03.002","DOIUrl":"10.1016/j.biosystemseng.2025.03.002","url":null,"abstract":"<div><div>Drip irrigation with slightly saline water is increasingly receiving attention in areas facing water scarcity worldwide. However, the high salt content can easily cause chemical clogging of emitters within the drip irrigation system. Resolving the clogging issue of emitters in drip irrigation systems using slightly saline water is essential for achieving the widespread adoption of such systems. This study involves the addition of <em>Bacillus subtilis</em> strain DSM 10 to the slightly saline water drip irrigation system, employing five different microbial agent replacement cycles (3d, 5d, 10d, 15d, and 20d), as well as a control group without microbial agents (CK). The study examined the effects of microbial agents on changes in water quality, alterations in the content of clogging substances, and the extent of clogging in emitters within the slightly saline water drip irrigation system. The results demonstrated that compared with the CK treatment, the addition of <em>B. subtilis</em> strain DSM 10 microbial inoculum with a longer replacement cycles (20 days) led to a significant reduction in the pH and EC of slightly saline water, and a significant enhancement in the solubility of the chemical clogging substances. The dry weight of clogging was reduced by 56.87%, with a 6.90% decrease specifically in CaCO<sub>3</sub>, resulting in a substantial improvement in the anti-clogging performance of the slightly saline water drip irrigation system by 57.27%. In general, the application of <em>B. subtilis</em> strain DSM 10 represents a biotechnological approach to enhancing the anti-clogging performance of slightly saline water drip irrigation systems.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"252 ","pages":"Pages 159-168"},"PeriodicalIF":4.4,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calibration transfer of sugar content prediction models for agricultural products via NIR spectral augmentation and reconstruction architecture
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-25 DOI: 10.1016/j.biosystemseng.2025.104133
Anyi Zhao , Xiaping Fu , Jingqian Wu , Jianyi Zhang
{"title":"Calibration transfer of sugar content prediction models for agricultural products via NIR spectral augmentation and reconstruction architecture","authors":"Anyi Zhao ,&nbsp;Xiaping Fu ,&nbsp;Jingqian Wu ,&nbsp;Jianyi Zhang","doi":"10.1016/j.biosystemseng.2025.104133","DOIUrl":"10.1016/j.biosystemseng.2025.104133","url":null,"abstract":"<div><div>Rapid non-destructive determination of sugar content in agricultural products such as pear and sugarcane is critical for optimising harvest timing and enhancing market competitiveness. However, near infrared spectroscopy-based prediction models suffer from degraded generalisation performance during cross-year or cross-device transfers, primarily due to insufficient sample sizes and spectral variability, which significantly hinders their large-scale deployment in agricultural engineering. To address these challenges, this study proposes a novel spectral masked autoencoder generative adversarial network (SMAEGAN), which integrates adversarial training with a masked autoencoder strategy to synthesise high-fidelity spectral data with enhanced cross-domain generalisation capabilities, thereby effectively mitigating data scarcity in few-shot transfer learning scenarios. Furthermore, a pyramid associative self-attention spectral transformer (PASASpTr) was introduced that hierarchically extracts multi-scale spectral features through an innovative pyramid architecture, enabling the synergistic capture of both local band-specific variations and global patterns. Comprehensive experimental evaluations demonstrate that PASASpTr significantly outperforms traditional convolutional neural networks in sugarcane sugar content prediction, achieving a root mean square error (RMSE) of 3.40, a coefficient of determination (R<sup>2</sup>) of 0.93, and a parameter size of 0.94 M. When combined with SMAEGAN-augmented reconstructed spectra for transfer learning, an average RMSE reduction of 44.68 % was achieved in the sugarcane dataset collected across different devices, and an average RMSE reduction of 40.65 % was achieved in the pear dataset collected across different years and production lines. This methodological architecture significantly reduces the reliance on target-domain annotated samples, while offering a lightweight and scalable solution for predicting sugar content across a wide range of agricultural products.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104133"},"PeriodicalIF":4.4,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Permeability prediction of bulk wheat for storage based on micro-computed tomography and lattice Boltzmann method
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-22 DOI: 10.1016/j.biosystemseng.2025.104124
Xiaoliang Wang , Ying Zhou , Yaping Shi , Qiao Wang , Yanbo Hui , Haiyang Ding
{"title":"Permeability prediction of bulk wheat for storage based on micro-computed tomography and lattice Boltzmann method","authors":"Xiaoliang Wang ,&nbsp;Ying Zhou ,&nbsp;Yaping Shi ,&nbsp;Qiao Wang ,&nbsp;Yanbo Hui ,&nbsp;Haiyang Ding","doi":"10.1016/j.biosystemseng.2025.104124","DOIUrl":"10.1016/j.biosystemseng.2025.104124","url":null,"abstract":"<div><div>During the study of grain storage ecosystems, the microstructure and permeability of bulk grain porous media are critical, which can influence fluid flow efficiency and mass transfer efficiency. In this study, the 3D pore structure of bulk grain porous media was reconstructed by X-ray micro computed tomography, and fluid permeability was investigated by the multi-relaxation-time (MRT) lattice-Boltzmann method (LBM). The results show that the representative elementary volume (REV) with voxel 300<sup>3</sup> has a porosity of 34.78 % and an average pore diameter of 1241.37 μm, which can not only reflect the pore structures of the bulk grain pile, but also satisfy the subsequent permeability simulation calculations. The permeability results calculated by LBM can be used to visualise the fluid flow in the bulk grain pore space, and the comparison of the results with the Kozeny–Carman (K–C) equation, the Xu-Yu model, and the experimentally measured permeability demonstrates the accuracy and feasibility of the MRT-LBM method proposed in this paper for simulating the permeability of the bulk grain pile. The method provides a novel way for the research of grain storage ecosystem by numerical simulation method, which is conducive to the study of fluid flow and heat and moisture transfer mechanism in grain storage.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104124"},"PeriodicalIF":4.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Economic viability-driven biorefinery site selection for cellulosic biofuel production in Western Canada
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-22 DOI: 10.1016/j.biosystemseng.2025.104122
Huanhuan Wang , Feng Qiu , Xiaoli Fan , Yanan Zheng , Mauricio Diego Soria Rodriguez
{"title":"Economic viability-driven biorefinery site selection for cellulosic biofuel production in Western Canada","authors":"Huanhuan Wang ,&nbsp;Feng Qiu ,&nbsp;Xiaoli Fan ,&nbsp;Yanan Zheng ,&nbsp;Mauricio Diego Soria Rodriguez","doi":"10.1016/j.biosystemseng.2025.104122","DOIUrl":"10.1016/j.biosystemseng.2025.104122","url":null,"abstract":"<div><div>There is a substantial body of current research on biofuel feedstock assessment and biorefinery site identification. Most of the literature in this field focuses on selecting suitable biorefineries by minimising costs, particularly transportation costs, rather than maximising economic profits. The latest studies on site location have started to introduce financial feasibility as a criterion for site selection. However, there remains a significant gap in the literature regarding the rapidly evolving sector of advanced biofuels like cellulosic biofuels. Addressing this gap, this study innovatively applies a Net Present Value (NPV) framework and a mathematical programming approach, incorporating economic viability, investment support, and carbon credits into the decision-making process for site selection in Western Western Canada. This approach offers insightful revelations regarding economically viable biomass supply and optimal site identification, highlighting the extent of governmental support essential to fostering the growth of the cellulosic biofuel industry. Key findings include: (1) An economic viability-based assessment indicated a substantially lower feedstock supply, about 20 % compared to evaluations based solely on feasible travelling distance; (2) Governmental intervention emerged as a pivotal element influencing the economic viability of cellulosic biofuel refineries; (3) Varied parameters, including production capacity, capital investment subsidies, and maximum transport distance, have significant impacts on economic feasibility and site selection outcomes. The results of this research add to the understanding of current cellulosic biofuel developments. They offer valuable insights into predicting feedstock supply, choosing the best locations for biofuel plants, and designing effective policies.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104122"},"PeriodicalIF":4.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on the compensation mechanism of pressure compensating emitters based on numerical simulation and visualisation experiment
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-20 DOI: 10.1016/j.biosystemseng.2025.104125
Xueli Chen , Zhengying Wei , Ruijia Ma , Jiansu Li , Yu Wang , Liyang Huang , Changying Dang , Junsheng Zhao , Zhonghua Li
{"title":"Research on the compensation mechanism of pressure compensating emitters based on numerical simulation and visualisation experiment","authors":"Xueli Chen ,&nbsp;Zhengying Wei ,&nbsp;Ruijia Ma ,&nbsp;Jiansu Li ,&nbsp;Yu Wang ,&nbsp;Liyang Huang ,&nbsp;Changying Dang ,&nbsp;Junsheng Zhao ,&nbsp;Zhonghua Li","doi":"10.1016/j.biosystemseng.2025.104125","DOIUrl":"10.1016/j.biosystemseng.2025.104125","url":null,"abstract":"<div><div>Pressure compensating (PC) emitters can maintain a stable flow rate within a large pressure range, which can better meet the needs of efficient water-saving irrigation technology. The basis for designing high-performance PC emitters is clarifying their working principles. Numerical simulation and visualisation experiments were combined to study the compensation mechanism of PC emitters. Based on the visualisation experimental sample, a simulation model of a PC emitter was established for fluid–solid coupling calculation of its working process. The correctness of the numerical simulation was verified through hydraulic performance experiments and elastic diaphragm deformation visualisation experiments. A detailed analysis was conducted on the pressure drop characteristics, fluid velocity variation characteristics, elastic diaphragm deformation characteristics, and fluid-structure interaction characteristics of the PC emitter. A constant flow rate state model of the PC emitter was established. The maximum error between the numerical simulation results and the experimental results did not exceed 12 %. The results indicate that only when the energy consumption of the labyrinth channel remained constant and the energy consumption of the PC chamber increased linearly with the working pressure, could the flow rate of the PC emitters remain constant. The energy consumption capacity of the PC chamber determines when the energy consumption of the labyrinth channel changes from an increasing state to a stable state. The factors that determine the deformation characteristics of the elastic diaphragm affect the performance of the PC emitter.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104125"},"PeriodicalIF":4.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of the diffuser plate design on the solid removal efficiency of a commercial pressurised sand filter
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-18 DOI: 10.1016/j.biosystemseng.2025.104121
Fábio Ponciano de Deus, Gabriel Dlouhy Alcon, Michael Silveira Thebaldi, Adriano Valentim Diotto
{"title":"Effect of the diffuser plate design on the solid removal efficiency of a commercial pressurised sand filter","authors":"Fábio Ponciano de Deus,&nbsp;Gabriel Dlouhy Alcon,&nbsp;Michael Silveira Thebaldi,&nbsp;Adriano Valentim Diotto","doi":"10.1016/j.biosystemseng.2025.104121","DOIUrl":"10.1016/j.biosystemseng.2025.104121","url":null,"abstract":"<div><div>Proper diffuser plate design can significantly improve flow distribution during filtration in a pressurised sand filter, thus, as hypothesis, this improvement in flow distribution may increase solid removal efficiency. Based on this perspective, this study aims to evaluate the influence of the diffuser plate design on the solid removal efficiency by combining different filtering layer heights and filtration rates, during filtration in a commercial pressurised sand filter. The experiment was performed in a hydraulic bench built as an open-circuit water circulator using water from a stream. Two diffuser plate designs (manufactured model and proposed model) were evaluated, assessing two filtering layer heights (0.225 and 0.45 m) and two filtration rates (20 and 75 m h<sup>−1</sup>). The proposed diffuser plate model did not show better results regarding solids removal, indicating that a better flow distribution over the filter surface bed did not increase the solids removal capacity. Additionally, it was observed that using the highest filtering layer height and lower filtration rate leads to the highest solids removal efficiency. There is a need to improve the methodology to achieve a more reliable estimate of solid removal efficiency of sand media filters during the filtering process. The temporal variability of the filtered effluent compromised the evaluation quality.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104121"},"PeriodicalIF":4.4,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wind tunnel study on effect of wind directions on ventilation inside a naturally ventilated pig barn with an outdoor yard
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-17 DOI: 10.1016/j.biosystemseng.2025.104123
Xuefei Wu , David Janke , Sabrina Hempel , Jürgen Zentek , Barbara Amon , Thomas Amon , Qianying Yi
{"title":"Wind tunnel study on effect of wind directions on ventilation inside a naturally ventilated pig barn with an outdoor yard","authors":"Xuefei Wu ,&nbsp;David Janke ,&nbsp;Sabrina Hempel ,&nbsp;Jürgen Zentek ,&nbsp;Barbara Amon ,&nbsp;Thomas Amon ,&nbsp;Qianying Yi","doi":"10.1016/j.biosystemseng.2025.104123","DOIUrl":"10.1016/j.biosystemseng.2025.104123","url":null,"abstract":"<div><div>Naturally ventilated pig barns equipped with outdoor exercise yards (NVPBOYs) have the potential to alleviate issues related to poor animal well-being and excessive gaseous emissions compared with conventional intensive pig farming. However, as a novel pig housing system, the information on the ventilation process of NVPBOYs with respect to variable outdoor wind directions remains unclear. Therefore, the objective of this study is to investigate the influence of wind direction on the indoor airflow pattern and ventilation rate of NVPBOYs. The investigations were performed using a 1:50 scale model of an NVPBOY in a large boundary layer wind tunnel. Air velocities inside the scaled model under four wind directions (0 <span><math><mrow><mo>°</mo></mrow></math></span>, 60 <span><math><mrow><mo>°</mo></mrow></math></span>, 120 <span><math><mrow><mo>°</mo></mrow></math></span>, and 180 <span><math><mrow><mo>°</mo></mrow></math></span>) were measured using a Laser Doppler Anemometer. The results indicate that: 1) Airflow patterns in the exercise yard are more sensitive to the changes in wind direction compared to those in the indoor room. 2) Oblique wind (60 <span><math><mrow><mo>°</mo></mrow></math></span> and 120 <span><math><mrow><mo>°</mo></mrow></math></span>) results in lower ventilation rates, accounting for 50 %–65 % of the ventilation rate observed under perpendicular winds (0 <span><math><mrow><mo>°</mo></mrow></math></span> and 180 <span><math><mrow><mo>°</mo></mrow></math></span>). 3)The yard directs the high-speed air stream to the upper part of the barn. The pitched roof and the gable wall of the indoor room lead the fresh air to the animal-occupied zone in the indoor room. The yard and the indoor room thus result in different local environments between them, supporting the intended purpose of the NVPBOYs to separate pigs’ excretion and sleeping areas. The results of this study contribute to a good understanding of the ventilation process of NVPBOYs to achieve a better design and control of their housing and ventilation systems.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104123"},"PeriodicalIF":4.4,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compliant picking control of dragon fruit picking robot based on adaptive variable impedance
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-13 DOI: 10.1016/j.biosystemseng.2025.02.014
Zongbin Wang , Kairan Lou , Bin Zhang , Yang Gu , Qiu Xu , Wei Fu
{"title":"Compliant picking control of dragon fruit picking robot based on adaptive variable impedance","authors":"Zongbin Wang ,&nbsp;Kairan Lou ,&nbsp;Bin Zhang ,&nbsp;Yang Gu ,&nbsp;Qiu Xu ,&nbsp;Wei Fu","doi":"10.1016/j.biosystemseng.2025.02.014","DOIUrl":"10.1016/j.biosystemseng.2025.02.014","url":null,"abstract":"<div><div>In response to the challenges of picking dragon fruit and the mechanical damage caused to the fruit by picking robots, this study developed a control system for the dragon fruit picking robot. A compliant picking control method for dragon fruit was proposed, which includes a picking strategy and an impedance control algorithm. The picking strategy utilises force sensors to improve the positioning ability of the fruit stalk and picking effect of the manipulator. Based on impedance control theory, a contact force model between the robot and the orchard environment was established, and the adaptive variable impedance control algorithm was improved. The contact force is used as the feedback of the adaptive variable impedance control, and the damping parameters are adaptively adjusted to adjust the contact force between the robot and the orchard environment, thereby reducing potential damage caused by abnormal picking. The picking trial results indicated that the overshoot of the robot under adaptive variable impedance control was 4.53%, with an adjustment time of 3.54 s, reducing by 3.83% and 0.77 s compared to traditional impedance control. The average time to pick a single dragon fruit under adaptive variable impedance control was 36.07 s, with an average success rate of 68.69% and a relatively low damage rate of 20.5%. The designed dragon fruit picking robot is capable of successfully detecting and adapting to occurring anomalies to minimise damage, effectively lowering the damage rate and improving the picking success rate, providing theoretical and technical support for the safe and compliant picking of dragon fruit.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"252 ","pages":"Pages 126-143"},"PeriodicalIF":4.4,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recognition in the early stage of powdery mildew damage for cucurbits plants using spectral signatures
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-13 DOI: 10.1016/j.biosystemseng.2025.03.001
Claudia Angélica Rivera-Romero , Elvia Ruth Palacios-Hernández , Jorge Ulises Muñoz-Minjares , Osbaldo Vite-Chávez , Roberto Olivera-Reyna , Iván Alfonso Reyes-Portillo
{"title":"Recognition in the early stage of powdery mildew damage for cucurbits plants using spectral signatures","authors":"Claudia Angélica Rivera-Romero ,&nbsp;Elvia Ruth Palacios-Hernández ,&nbsp;Jorge Ulises Muñoz-Minjares ,&nbsp;Osbaldo Vite-Chávez ,&nbsp;Roberto Olivera-Reyna ,&nbsp;Iván Alfonso Reyes-Portillo","doi":"10.1016/j.biosystemseng.2025.03.001","DOIUrl":"10.1016/j.biosystemseng.2025.03.001","url":null,"abstract":"<div><div>One of the most significant diseases affecting cucurbit plants is powdery mildew, which causes substantial yield losses in both greenhouses and field crops, especially during the winter and summer periods. Therefore, early diagnosis and detection are essential for effective pathogen control. An advanced, non-invasive method was developed for remotely sensing this fungal disease and assessing damage levels using spectral reflectance. The primary objective of this study is to detect the onset of the disease before the first visible symptoms appear on the leaves through the use of vegetation indices. To achieve this, statistical analyses and multiple comparison tests were employed for feature selection, in combination with machine learning algorithms, such as a Support Vector Machine. The results demonstrated high reliability in distinguishing between healthy and infected cucurbit leaves with powdery mildew. By calculating vegetation indices (VIs), seven optimal features were identified, enabling the recognition of three damage levels with 98% accuracy and a Cohen's <span><math><mrow><mi>κ</mi></mrow></math></span> coefficient of up to 0.96. Spectral reflectance successfully differentiated powdery mildew damage levels in cucurbit plants, suggesting that this method could be recommended for crops with similar characteristics.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"252 ","pages":"Pages 144-158"},"PeriodicalIF":4.4,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of the cubicle hood sampler for monitoring methane production of dairy cows under barn conditions
IF 4.4 1区 农林科学
Biosystems Engineering Pub Date : 2025-03-09 DOI: 10.1016/j.biosystemseng.2025.02.008
Cécile M. Levrault , Peter W.G. Groot Koerkamp , Carel F.W. Peeters , Nico W.M. Ogink
{"title":"Evaluation of the cubicle hood sampler for monitoring methane production of dairy cows under barn conditions","authors":"Cécile M. Levrault ,&nbsp;Peter W.G. Groot Koerkamp ,&nbsp;Carel F.W. Peeters ,&nbsp;Nico W.M. Ogink","doi":"10.1016/j.biosystemseng.2025.02.008","DOIUrl":"10.1016/j.biosystemseng.2025.02.008","url":null,"abstract":"<div><div>Monitoring methane production from individual cows is necessary to evaluate the success of greenhouse gas reduction strategies. However, monitoring methane production rates (<strong>MPR</strong>) under practical conditions remains challenging. In this paper, we investigate the performance of a potential solution to this challenge.</div><div>The cubicle hood sampler (<strong>CHS</strong>) is an on-barn monitoring device placed in cubicles that collects the air exhaled by the animals while they lie down. The MPR of 28 dairy cows were measured by four CHS devices and compared to the levels measured by climate respiration chambers (<strong>CRC</strong>). A linear regression showed no strong correlation between the two sets of estimates (<em>r</em> = 0.24). The estimates made by the CHS appeared to be inaccurate due to a sampling bias (insufficient breath recovery), which could not be corrected for. Using Bayesian modelling, information was pooled across individuals to model complete methane production curves and potentially improve the accuracy of the MPR estimates. However, the model was unable to compensate for the biased observations used for fitting, and accuracy levels did not improve. An under-recovery of the breath samples by the hood is suspected. These issues must be resolved. Nevertheless, the CHS ranked cows satisfactorily, with Kendall W values of 0.625 (<em>p</em> = 0.201) in the original dataset, and 0.659 (<em>p</em> = 0.214) after using the model. Resolving the bias issue is expected to have a simultaneous positive effect on the agreement between the two MPR rankings. We recommend to keep using the model to convert discrete measurements into methane production curves.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"252 ","pages":"Pages 115-125"},"PeriodicalIF":4.4,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信