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Research in Agricultural Engineering最新文献

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Influence of magnetised irrigation water on the fertigation process and potato productivity 磁化灌溉水对施肥过程及马铃薯产量的影响
Research in Agricultural Engineering Pub Date : 2020-06-29 DOI: 10.17221/1/2020-rae
H. Mostafa
{"title":"Influence of magnetised irrigation water on the fertigation process and potato productivity","authors":"H. Mostafa","doi":"10.17221/1/2020-rae","DOIUrl":"https://doi.org/10.17221/1/2020-rae","url":null,"abstract":"An experiment was conducted for two seasons on a farm in the Mit Kenana village, Qalyobia, Egypt. The aim was to study the influence of a magnetised water technology on the fertilisers during irrigation (fertigation) and its impact on the water, soil as well as the yield and yield components for potatoes. The experiment included: Normal water (NM), magnetic water (MW), adding fertiliser before (FMW) and after magnetism (MWF). The results indicated that irrigation with magnetised water and then adding fertiliser (MWF) had a positive significant effect on the water and soil properties, the tuber engineering parameters improved and the potato productivity increased by 40.5% higher than the NM method. The fertigation unit has to be installed after the magnetic device because the direct magnetisation of the water with the fertilisers contributes to the cracking and increases the solubility of the fertilisers that may lead to the possibility of leaching some of them away from the roots, which implies losing some of them and, therefore, decreasing the effectiveness of the fertilisers.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":"66 1","pages":"43-51"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/1/2020-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42765093","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: 10
Study on the effect of the teat reaction on the time components of the pulsogram in various types of milking liners 乳头反应对不同类型挤奶衬垫脉动图时间分量影响的研究
Research in Agricultural Engineering Pub Date : 2020-03-27 DOI: 10.17221/40/2019-rae
K. Peychev, G. Dineva
{"title":"Study on the effect of the teat reaction on the time components of the pulsogram in various types of milking liners","authors":"K. Peychev, G. Dineva","doi":"10.17221/40/2019-rae","DOIUrl":"https://doi.org/10.17221/40/2019-rae","url":null,"abstract":"The relationship between the milking process phases and the artificial teat reaction have been studied. Milking units with a conventional and tri-circle shape of the pulsation chamber were used. The conclusions are related to the reaction of the teat support and the changes of the time components in the pulsogram. The filling of the milking chamber with an artificial teat reduces the absolute duration of the transitional phases \"a\" and \"c\" and prolongs the actual phases \"b\" and \"d\" in all the experimental rates.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":"66 1","pages":"27-32"},"PeriodicalIF":0.0,"publicationDate":"2020-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/40/2019-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47063632","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
Pyrolysis of wheat and barley straw 小麦和大麦秸秆的热解
Research in Agricultural Engineering Pub Date : 2020-03-27 DOI: 10.17221/26/2019-rae
Anežka Sedmihradská, M. Pohořelý, P. Jevič, S. Skoblia, Z. Beňo, Josef Farták, B. Čech, M. Hartman
{"title":"Pyrolysis of wheat and barley straw","authors":"Anežka Sedmihradská, M. Pohořelý, P. Jevič, S. Skoblia, Z. Beňo, Josef Farták, B. Čech, M. Hartman","doi":"10.17221/26/2019-rae","DOIUrl":"https://doi.org/10.17221/26/2019-rae","url":null,"abstract":"Pyrolysing agricultural crop residues and other biomass constitutes a newer method of transforming often difficult, waste materials into a novel type of soil amendment/additive. Simultaneously, this process also makes it possible to exploit part of the energy released in the agricultural production. Biochar, viewed as the solid product of biomass pyrolysis, is a remarkable, porous material, rich in carbon. Two agricultural crop residues, such as wheat and barley straw, were selected for the experimental studies. The results indicate that the practical temperature for the production of biochar from the two explored materials occurs in the vicinity of 600 °C. Starting at this temperature, the biochar produced complies safely with the principal European Biochar Certificate standards (EBC 2012). Thus, for the wheat straw and barley straw – originated char, the content of the carbon amounts to 67.2 and 67.0 mass %, the atomic ratio H : C is as large as 0.032 and 0.026, and the specific surface area amounts to 217 and 201 m2⋅g–1, respectively.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":"66 1","pages":"8-17"},"PeriodicalIF":0.0,"publicationDate":"2020-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/26/2019-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42006722","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: 7
Investigation of sectional operating elements for conveying agricultural materials 农资输送分段操作元件的研究
Research in Agricultural Engineering Pub Date : 2020-03-27 DOI: 10.17221/25/2019-rae
R. Hevko, R. Rohatynskyi, Myroslav Hevko, O. Lyashuk, O. Trokhaniak
{"title":"Investigation of sectional operating elements for conveying agricultural materials","authors":"R. Hevko, R. Rohatynskyi, Myroslav Hevko, O. Lyashuk, O. Trokhaniak","doi":"10.17221/25/2019-rae","DOIUrl":"https://doi.org/10.17221/25/2019-rae","url":null,"abstract":"The paper covers the results of the theoretical and experimental investigation of the developed sectional operating element of a flexible screw conveyer designed for transporting bulk agricultural materials. In order to determine the correlation between the design parameters of the hinged screw sections and the minimum permissible radius of curvature of a processing line, the analytical dependences have been deduced. The results of the experimental studies aimed at determining the efficiency of a screw conveyer and the level of the grain material damage depending on the change in design, kinematic and technological parameters of an operating element are presented.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":"66 1","pages":"18-26"},"PeriodicalIF":0.0,"publicationDate":"2020-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/25/2019-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43070297","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
Dielectric technique combined with artificial neural network and support vector regression in moisture content prediction of olive 介电技术与人工神经网络和支持向量回归相结合预测橄榄含水量
Research in Agricultural Engineering Pub Date : 2020-03-27 DOI: 10.17221/13/2019-rae
Mahdi Rashvand, M. Firouz
{"title":"Dielectric technique combined with artificial neural network and support vector regression in moisture content prediction of olive","authors":"Mahdi Rashvand, M. Firouz","doi":"10.17221/13/2019-rae","DOIUrl":"https://doi.org/10.17221/13/2019-rae","url":null,"abstract":"Olives are one of the most important agriculture crops in the world, which are harvested in different stages of growth for various uses. One of the ways to detect the adequate time to process the olives is to determine their moisture content. In this study, to determine the moisture content of olives, a dielectric technique was used in seven periods of harvesting and three different varieties of olive including Oily, Mary and Fishemi. The dielectric properties of the olive fruits were measured using an electronic device in the range of 0.1–30 MHz. Artificial Neural Network (ANN) and Support Vector Regression (SVR) methods were applied to develop the prediction models by using the obtained data acquired by the system. The best results (R = 0.999 and MSE = 0.014) were obtained by the ANN model with a topology of 384–12–1 (384 features in the input vector, 12 neurons in the hidden layer and 1 output). The results obtained indicated the acceptable accuracy of the dielectric technique combined with the ANN model.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":"66 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2020-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/13/2019-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47235492","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
Research of a contact impact of a root crop with a screw auger 块根作物与螺旋钻接触冲击的研究
Research in Agricultural Engineering Pub Date : 2020-01-25 DOI: 10.17221/75/2017-rae
V. Baranovsky, Olena Truchanska, M. Pankiv, V. Bandura
{"title":"Research of a contact impact of a root crop with a screw auger","authors":"V. Baranovsky, Olena Truchanska, M. Pankiv, V. Bandura","doi":"10.17221/75/2017-rae","DOIUrl":"https://doi.org/10.17221/75/2017-rae","url":null,"abstract":"The purpose of this research is the further development of the methodology and methods of optimising the parameters of root pile combined cleaners of a root crop harvesting machine. We have conducted theoretical and experimental studies of the combined cleaning system’s functioning process. By executing the analysis, we found the motion of the fodder beet through the working surfaces of the feeding conveyor and the auger installed above it. We have got an analytical and empirical process model for the fodder beet’s oblique sub-hit on the auger turn. It characterises the dependence of the total rate of the sub-hit coefficient of the technological interaction of the roots and the depth of the root damage, which depend on the main parameters of the combined cleaning system. We found out the rational limits of the basic structural and kinematic parameters of the combined cleaning system by the provided minimum fodder beet damage. It is theoretically justified that the minimum damage to roots of the beet roots will be at a contact angle of zero (γ ≅ 0) or close to it. This condition is protected with the following combinations of parameters: a screw diameter of D = 0.4, 0.6, 0.8 m and a screw speed of n = 99, 72, 50 rpm, respectively.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/75/2017-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44048758","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: 8
The physical properties and strength characteristics of kenaf plants 红麻植物的物理特性和强度特性
Research in Agricultural Engineering Pub Date : 2019-12-30 DOI: 10.17221/34/2019-rae
Olumide Babatope Falana, O. Aluko, D. Adetan, J. Osunbitan
{"title":"The physical properties and strength characteristics of kenaf plants","authors":"Olumide Babatope Falana, O. Aluko, D. Adetan, J. Osunbitan","doi":"10.17221/34/2019-rae","DOIUrl":"https://doi.org/10.17221/34/2019-rae","url":null,"abstract":"This article reports some physical properties and strength characteristics of two kenaf (Hibiscus cannabinus) varieties in Nigeria at critical stages of harvest with a view of understanding the plant material reaction to the load and deformation. The kenaf samples were subjected to a uniaxial compression test between two parallel plates at a loading rate of 20 mm·min–1 and a uniaxial bending test between two supports on each end at a loading rate of 50 mm·min–1 using a Universal Instron Testing Machine (Instron, USA). The results of the parameters studied revealed that Tianung 1 gave the higher stem height, stem diameter, compressive stress, bending stress, rupture load, rupture energy, Young’s modulus, and toughness, which were 293.10 cm, 18.45 mm, 8.70 MPa, 44.86 MPa, 191.51 N, 3.43 J·mm–2, 350.81 MPa, and 6.85 N·mm–1, respectively, at four months after planting. The parameters studied significantly increased with maturity for the two kenaf varieties. However, the moisture content significantly reduced with maturity.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":"65 1","pages":"131-136"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/34/2019-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44279919","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
The evaluation of vibration damage in fresh apricots during simulated transport 鲜杏在模拟运输过程中的振动损伤评价
Research in Agricultural Engineering Pub Date : 2019-12-30 DOI: 10.17221/12/2019-rae
M. Khodaei, S. Seiiedlou, M. Sadeghi
{"title":"The evaluation of vibration damage in fresh apricots during simulated transport","authors":"M. Khodaei, S. Seiiedlou, M. Sadeghi","doi":"10.17221/12/2019-rae","DOIUrl":"https://doi.org/10.17221/12/2019-rae","url":null,"abstract":"The transportation of fruits over longer distances could lead to damage fruits such as apricots. The present study was conducted to evaluate the effect of transportation factors including the vibration frequencies (17 and 20 Hz), the vibration time (15 and 30 minutes), the fruit cultivar (Shahroudi and Urdoobad), and the package type (2 types) on the apricot damage. An electro-dynamic lab vibration simulator was used to simulate the road transportation and a fruit damage index (FDI) was used as a criterion to evaluate the damage based on the classifying bruises into five different categories. The statistical analysis indicated that, except for the package type, the other factors (apricot cultivar, frequency, and vibration duration) had a significant effect on the FDI (P < 0.01). The vibration damages considerably changed by the apricot cultivar and increased by the frequency and duration. The results indicated that the Urdoobad cultivar was more resistant to the damage and could be used for export purposes to transport in distances more than 1,000 km. The maximum damages occurred at a frequency and duration of 17 Hz and 30 min in the Shahroudi cultivar, respectively.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":"65 1","pages":"112-122"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/12/2019-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47547209","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
Evaluation of a manual olive fruit harvester for small producers 小型生产者手动橄榄果收割机的评价
Research in Agricultural Engineering Pub Date : 2019-12-30 DOI: 10.17221/18/2019-rae
E. Plasquy, Rafael R. Sola-Guiraldo, Carmen Florido, José M. García, G. Blanco-Roldán
{"title":"Evaluation of a manual olive fruit harvester for small producers","authors":"E. Plasquy, Rafael R. Sola-Guiraldo, Carmen Florido, José M. García, G. Blanco-Roldán","doi":"10.17221/18/2019-rae","DOIUrl":"https://doi.org/10.17221/18/2019-rae","url":null,"abstract":"Harvest facilities limit the possibilities of small producers to produce a high-quality olive fruit. This paper discusses the efficiency of a newly designed manual picking device as a possible solution to these specific challenges as confronted in most regions of the Mediterranean basis. The efficiency and cost of the picking method were compared to traditional olive picking using nets, taking a different number of operators and branch shakers into account.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/18/2019-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45041861","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: 7
Laser diffraction analysis of purified Descurainia Sophia seeds by a tribo-aero-electrostatic system 摩擦-空气-静电系统激光衍射分析纯化的柏树种子
Research in Agricultural Engineering Pub Date : 2019-12-30 DOI: 10.17221/48/2018-rae
M. Afsharipour, Kazem Jafari-Naeimi, Hadi Samimi-Akhijahani
{"title":"Laser diffraction analysis of purified Descurainia Sophia seeds by a tribo-aero-electrostatic system","authors":"M. Afsharipour, Kazem Jafari-Naeimi, Hadi Samimi-Akhijahani","doi":"10.17221/48/2018-rae","DOIUrl":"https://doi.org/10.17221/48/2018-rae","url":null,"abstract":"In order to separate the impurities in vegetable seeds, a tribo-aero-electrostatic separator was designed and manufactured. Th e data analysis of the pure Descurainia Sophia seed shows that the interaction of the voltage, distance and angle was signifi cant on the weight of the D. Sophia at the level of 1%. To determine and compare the size of the separated seeds, a laser diff raction device with the possibility of analysing the size distribution of the particles was used. Th e results showed that the best purity (99.5%) with the highest percentage of the relative frequency of the D. Sophia seeds size was obtained for box 1 (the fi rst box) with a seed size of 680 μm. By moving from box 1 towards box 4, the amount of the impurities due to the variation of the electrical properties of the materials increases, although the value of the impurities for the samples is acceptable.","PeriodicalId":20906,"journal":{"name":"Research in Agricultural Engineering","volume":"65 1","pages":"123-130"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17221/48/2018-rae","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47328602","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
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