Research in Agricultural Engineering最新文献_第5页

Monitoring the movement of housed animals by means of wireless technology 利用无线技术监测圈养动物的活动

Research in Agricultural Engineering Pub Date : 2022-09-16 DOI: 10.17221/66/2021-rae

M. Olmr, M. Pačes, J. Lešetický, M. Přikryl

{"title":"Monitoring the movement of housed animals by means of wireless technology","authors":"M. Olmr, M. Pačes, J. Lešetický, M. Přikryl","doi":"10.17221/66/2021-rae","DOIUrl":"https://doi.org/10.17221/66/2021-rae","url":null,"abstract":"Currently, several, more or less, suitable means for detecting, identifying and monitoring the position of housed animals exist. However, these means suffer from various limitations, which could be eliminated with regard to the current technical and technological possibilities. One possible solution could be the use of some wireless technologies from the Internet of Things (Wi-Fi, Bluetooth, Zigbee, etc.). The uninterrupted supervision of individual housed animals would bring important information about the daily routine of individuals and then, based on the deviations from this daily routine, the opportunity to derive their physical and mental state from these deviations would be potentially possible. This article presents a proof of concept of a low-cost monitoring system of the movement of housed animals. The proposed system is able to detect the client's (prototype's) position in the space by means of Wi-Fi (IEEE 802.11 standard) and received signal strength indication (RSSI) technologies. A fingerprint method and a triangulation method of analysing the space are used to calculate the position in space with a resulting accuracy within metres of the real position.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42150485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Models for feature selection and efficient crop yield prediction in the groundnut production 花生生产中的特征选择和有效产量预测模型

Research in Agricultural Engineering Pub Date : 2022-09-14 DOI: 10.17221/15/2021-rae

Kuruguntu Mohan Krithika, Nachimuthu Maheswari, M. Sivagami

{"title":"Models for feature selection and efficient crop yield prediction in the groundnut production","authors":"Kuruguntu Mohan Krithika, Nachimuthu Maheswari, M. Sivagami","doi":"10.17221/15/2021-rae","DOIUrl":"https://doi.org/10.17221/15/2021-rae","url":null,"abstract":"Tamil Nadu ranks high in groundnut production in India. The yield prediction of the crop over Tamil Nadu will be highly useful in improving the efficiency of the production. This article aims to identify an efficient machine learning model to predict the groundnut crop yield and analyse the performance of the tested models. The study used the irrigation, rainfall, area and production data as factors for the groundnut crop yield across the districts of Tamil Nadu. This article identified the best set of features for training the models and studied various prediction models to evaluate the performance on the collected data. The trained and tested data were evaluated using various performance measures. The results of the study show that LASSO and ElasticNet provide the optimal results with the lowest RMSE and RRMSE values of 491.603 and 490.931 kg·ha–1, 20.68 and 20.66%, respectively. The models showed the lowest MAE and RMAE values as well (333.154 and 331.827 kg·ha–1 and 14.53%, 14.51%, respectively) when compared to other models. The identification of the right time to sow and area to irrigate through feature selection and the prediction of the yield will improve the yield of the groundnut crops. This helps farmers to make practical decisions and reap the benefits.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43217834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Drying kinetics and mathematical modelling of Arundo donax L. canes, a potential renewable fuel 一种潜在的可再生燃料——芦竹的干燥动力学及数学模型

Research in Agricultural Engineering Pub Date : 2022-07-22 DOI: 10.17221/73/2021-rae

V. Córdoba, A. Manzur, E. Santalla

{"title":"Drying kinetics and mathematical modelling of Arundo donax L. canes, a potential renewable fuel","authors":"V. Córdoba, A. Manzur, E. Santalla","doi":"10.17221/73/2021-rae","DOIUrl":"https://doi.org/10.17221/73/2021-rae","url":null,"abstract":" Arundo donax L. is an energy crop with the potential use as a renewable fuel. This study focused on the drying process of the canes in field and laboratory conditions to determine the effect of the harvest conditioning on the kinetics parameters of whole and slashed canes. The lab drying test was conducted in a thin layer dryer at temperatures between 30 and 80 °C and a 0.5 m·s–1 air velocity. The whole and slashed canes showed faster water evaporation rates as the temperature increased, but the slashed canes achieved a lower final moisture content in a shorter time. The effective diffusion coefficient varied between 3.67 × 10–12 and 1.28 × 10–11 m2·s–1 and showed a significant effect of the temperature, but not between samples; its temperature dependence was determined by the Arrhenius equation giving activation energies of 24.4 and 20.2 kJ·mol–1 for the whole and slashed canes respectively, not significantly different. The modelling of the experimental drying data to six thin layer drying models achieved good performance (R2 > 95.9%), although the Logarithmic model showed the best fit for both samples (R2 > 99.4%). In addition, a temperature dependent equation for the drying constant was included in the Logarithmic model for the whole and slashed canes which predicted with good performance (R2 > 97%) the moisture loss. The developed tools constitute an adequate model for the simulation of the drying process of Arundo donax L. that could be useful for the design of various equipment and systems.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48304569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Applications of pulsed electric fields for processing potatoes: Examples and equipment design 脉冲电场在马铃薯加工中的应用:实例及设备设计

Research in Agricultural Engineering Pub Date : 2022-06-29 DOI: 10.17221/90/2021-rae

O. Parniakov, N. Lebovka, A. Wiktor, Martina Comiotto Alles, K. Hill, S. Toepfl

{"title":"Applications of pulsed electric fields for processing potatoes: Examples and equipment design","authors":"O. Parniakov, N. Lebovka, A. Wiktor, Martina Comiotto Alles, K. Hill, S. Toepfl","doi":"10.17221/90/2021-rae","DOIUrl":"https://doi.org/10.17221/90/2021-rae","url":null,"abstract":"In the last two decades, pulsed electric fields (PEF) have successfully been introduced into the food industry, as one of the most promising and \"game changing\" technologies. This review is devoted to the recent applications of pulsed electric fields used in processing potatoes. The potato processing market size was estimated to be ca. USD 24.83 billion (2018) and with an annual growth rate of 5.2%. The physicochemical characteristics of potatoes and the specificity of potato processing lines makes a pulsed electric field very versatile and flexible allowing one to achieve different technological aims by its implementation into technological lines. In this paper, a short analysis of the potato structure and its nutritional properties, applications of moderate electric fields, ohmic heating, and pulsed electric fields are presented. Moreover, the basic electroporation effects, metabolic responses, texture modification and different PEF assisted processes applied to the potato are discussed. Finally, some examples of commercial applications and a brief description of the available equipment for the PEF processing of potatoes are presented.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41499217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Application of pulsed electric field prior to vacuum drying: Effect on drying time and quality of apple tissue 脉冲电场在真空干燥前的应用：对苹果组织干燥时间和质量的影响

Research in Agricultural Engineering Pub Date : 2022-06-07 DOI: 10.17221/93/2021-rae

Aleksandra Matys, D. Witrowa‐Rajchert, O. Parniakov, A. Wiktor

{"title":"Application of pulsed electric field prior to vacuum drying: Effect on drying time and quality of apple tissue","authors":"Aleksandra Matys, D. Witrowa‐Rajchert, O. Parniakov, A. Wiktor","doi":"10.17221/93/2021-rae","DOIUrl":"https://doi.org/10.17221/93/2021-rae","url":null,"abstract":"The study aimed to determine the influence of a pulsed electric field (PEF) treatment on vacuum drying (VD) of apples and their selected quality parameters. The apples were treated with a PEF at 1 kV·cm–1 (with a variable amount of the specific energy input: 1, 3.5, and 6 kJ·kg–1) before VD at 4 kPa (with a variable drying temperature: 40 °C, 55 °C, and 70 °C). The drying time, microstructure, retention of total phenolics (TPC) as well as the antioxidant activity of the obtained dried materials were studied. As a result of opening the cell structure of the apple tissues, the PEF significantly (P < 0.05) reduced the drying time – depending on the used process parameters – by 6–22%. Moreover, an increase in the drying temperature also shortened the drying time. The electroporation led to obtaining porous materials after drying, and with the higher amount of specific energy during the PEF pre-treatment that was applied, a higher porosity was observed in the dried apples. After the PEF-assisted VD, a significant (P < 0.05) decrease in the TPC (by 12–40%) and antioxidant activity (by 23–81%) were observed.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41379059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

The effect of ethanol on potato growth and production at moderate elevation 中等海拔条件下乙醇对马铃薯生长和产量的影响

Research in Agricultural Engineering Pub Date : 2022-05-30 DOI: 10.17221/45/2021-rae

A. Muhibuddin, Zulkifli Maulana, Suryawati Salam, S. Syamsia, R. Reta, Arifin Fattah

{"title":"The effect of ethanol on potato growth and production at moderate elevation","authors":"A. Muhibuddin, Zulkifli Maulana, Suryawati Salam, S. Syamsia, R. Reta, Arifin Fattah","doi":"10.17221/45/2021-rae","DOIUrl":"https://doi.org/10.17221/45/2021-rae","url":null,"abstract":"Indonesia's current potato cultivation areas are mainly in the highlands (1 000 m above sea level – a.s.l.). However, there are obstacles to potato cultivation in the highlands, including erosion, declining land productivity, limited area, and high production costs (i.e. labour wages, fertilisers, and pesticides). This study was aimed at analysing the effects of both an ethanol application and moderate altitudes on the potato production and quality. This study was conducted at the Horticulture Seed Station in the Ulu Ere subdistrict, Bantaeng Regency, South Sulawesi, Indonesia. A split randomised plot design with two factors was used. The main plots were set at two elevation levels: 500 and 700 m a.s.l. The split plots were subjected to the addition of four ethanol concentration levels: 0, 10, 20, and 30%. The results showed that the ethanol application did not significantly affect the potato growth at the moderate elevation, except for the tuber diameter. Moreover, the 20% ethanol concentration produced better results than the 0% ethanol concentration. The application of 10% ethanol at an altitude of 700 m a.s.l. and 30% ethanol at an altitude of 500 m a.s.l. resulted in the best growth and yield among the studied treatments.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42267139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Processing of sugar beets assisted by pulsed electric fields 脉冲电场辅助甜菜加工

Research in Agricultural Engineering Pub Date : 2022-05-20 DOI: 10.17221/91/2021-rae

E. Vorobiev, N. Lebovka

引用次数: 3

Pulsed electric field treatment for the stimulation of microorganisms: Applications in food production 脉冲电场处理刺激微生物:在食品生产中的应用

Research in Agricultural Engineering Pub Date : 2022-05-18 DOI: 10.17221/78/2021-rae

S. El Kantar, M. Koubaa

引用次数: 0

Kitchen cooking by electroporation 厨房电穿孔烹饪

Research in Agricultural Engineering Pub Date : 2022-05-13 DOI: 10.17221/96/2021-rae

F. Kumhála, J. Lev, P. Kouřím, J. Blahovec

{"title":"Kitchen cooking by electroporation","authors":"F. Kumhála, J. Lev, P. Kouřím, J. Blahovec","doi":"10.17221/96/2021-rae","DOIUrl":"https://doi.org/10.17221/96/2021-rae","url":null,"abstract":"Recently, modern non-heating-based food processing alternatives have emerged. The pulsed electric field (PEF) technology is an example, which does not require high temperatures and, in principle, preserves both the nutritional and functional characteristics of the food while possibly improving the taste. Nevertheless, using this technology in kitchen conditions is still a challenge. Thus, the main aim of this work was the development of a kitchen cooking device that uses pure pulse electroporation (without thermal effects). A device powered by a common electrical network was designed. The voltage applied to the electrodes is approximately 150 V. At a food thickness of 3 mm, an intensity of 500 V·cm–1 was achieved, which was sufficient for the electroporation of typical vegetables. Depending on the specific food being treated, the device repeats the pulses until the required degree of the PEF treatment is reached. Preparing a larger amount of food at one time would require great instant power from the device. In order to load the device with less current, the large working area of the electrodes was divided into nine segments. The food is gradually prepared segment by segment. The function of the device is controlled via an electronic programmable control unit. The electroporation of the processed material was achieved with a functional prototype of the designed device, but with some limitations that have to be respected in further development.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45103487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sensory evaluation test of electroporated carrots 电穿孔胡萝卜感官评价试验

Research in Agricultural Engineering Pub Date : 2022-05-05 DOI: 10.17221/84/2021-rae

P. Kouřím, L. Kouřimská, Izabela Kovaříková, J. Blahovec

引用次数: 1