M. Žitňák, J. Lendelová, Zuzana Pivarčiová, M. Korenko, P. Kiełbasa, P. Dostál
Abstract In a pleasant and healthy work environment, employees are able to fully devote themselves to work, which is reflected in their work performance and a positive approach to work. This research paper focuses on changing the management approach of a selected company to physical factors of the work environment. The focus was targeted at looking for possibilities to change the work environment, which would create wellbeing for its employees, as well as to the exposure of a worker to noise in the work environment and the possibility of its elimination in a particular manufacturing plant. Based on measurements it was found out that the noise exposure values on the machinery had been exceeded. Based on the findings, two corrective technical measures were proposed to reduce noise in the workplace. The first technical measure was to cover the ultrasonic welders with acoustic covers; the second was to cover the fixture itself. However, the fixture covering was removed due to several negative effects on labour productivity and increased costs. After the implementation of technical measures, the measurements were taken once again and based on the results, the organizational measures were proposed.
{"title":"Possibilities of Noise Load Elimination in Production","authors":"M. Žitňák, J. Lendelová, Zuzana Pivarčiová, M. Korenko, P. Kiełbasa, P. Dostál","doi":"10.2478/ata-2023-0006","DOIUrl":"https://doi.org/10.2478/ata-2023-0006","url":null,"abstract":"Abstract In a pleasant and healthy work environment, employees are able to fully devote themselves to work, which is reflected in their work performance and a positive approach to work. This research paper focuses on changing the management approach of a selected company to physical factors of the work environment. The focus was targeted at looking for possibilities to change the work environment, which would create wellbeing for its employees, as well as to the exposure of a worker to noise in the work environment and the possibility of its elimination in a particular manufacturing plant. Based on measurements it was found out that the noise exposure values on the machinery had been exceeded. Based on the findings, two corrective technical measures were proposed to reduce noise in the workplace. The first technical measure was to cover the ultrasonic welders with acoustic covers; the second was to cover the fixture itself. However, the fixture covering was removed due to several negative effects on labour productivity and increased costs. After the implementation of technical measures, the measurements were taken once again and based on the results, the organizational measures were proposed.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"26 1","pages":"42 - 48"},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43504238","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}
Pub Date : 2023-03-01DOI: 10.51558/2232-7568.2022.15.2.15
T. Brčina, M. Vilušić, Melisa Zahirović
Syneresis represents the appearance of separation of whey on the surface of the product and is considered an important parameter of the quality of fermented dairy products. For the production of the fermented milk drink, kombucha was used as a non-traditional starter. Two sweeteners were used, honey and sucrose.The aim of the work was to examine the influence of starter and sweetener on changes in the subsequent acidity and intensity of syneresis of the samples during storage. The results were compared with a control sample obtained by inoculation with a conventional starter culture. During storage, there was a drop in pH value and an increase in titratableacidity, as a resultof the constant metabolic activity of the microflora and the production of lactic acid in the produced samples. Honey, as a sweetener, had an effect on the lower pH value of the fermented milk drink samples. The analysis of variance showed a statistically significant difference in the titratable acidity results and the intensity of syneresis of the samples during storage.Samples that were produced with kombucha as a starter showed better structure stability during storage and better quality. During storage, sample kb4 showed the best structural stability and the lowest intensity of syneresis. KEYWORDS:stinging nettle extract;bioactive components;extraction;antioxidant
{"title":"Influence of starter and sweetener on the syneresis intensity of fermented milk drink","authors":"T. Brčina, M. Vilušić, Melisa Zahirović","doi":"10.51558/2232-7568.2022.15.2.15","DOIUrl":"https://doi.org/10.51558/2232-7568.2022.15.2.15","url":null,"abstract":"Syneresis represents the appearance of separation of whey on the surface of the product and is considered an important parameter of the quality of fermented dairy products. For the production of the fermented milk drink, kombucha was used as a non-traditional starter. Two sweeteners were used, honey and sucrose.The aim of the work was to examine the influence of starter and sweetener on changes in the subsequent acidity and intensity of syneresis of the samples during storage. The results were compared with a control sample obtained by inoculation with a conventional starter culture. During storage, there was a drop in pH value and an increase in titratableacidity, as a resultof the constant metabolic activity of the microflora and the production of lactic acid in the produced samples. Honey, as a sweetener, had an effect on the lower pH value of the fermented milk drink samples. The analysis of variance showed a statistically significant difference in the titratable acidity results and the intensity of syneresis of the samples during storage.Samples that were produced with kombucha as a starter showed better structure stability during storage and better quality. During storage, sample kb4 showed the best structural stability and the lowest intensity of syneresis.\u0000KEYWORDS:stinging nettle extract;bioactive components;extraction;antioxidant","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"55 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91208777","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}
F. Hashemi, R. Pourdarbani, S. Ardabili, J. L. Hernández-Hernández
Abstract In the present study, an attempt was made to simulate the hybrid self-power generation process from a diesel engine and propose sustainable power-share management for this self-power hybrid electrical-diesel platform from the viewpoints of environmental and economic aspects (life cycle perspective). This concept means that when the engine works at part-load condition, we need to bring the engine operating conditions to optimal load, and along with doing the necessary work, in parallel, the rest of the power be used to generate electricity to be stored in the battery for more consumption in addition to reducing pollution and reducing fuel consumption by moving towards sustainable energy production. This case study examines the differences between using a diesel engine at idle and maximum load conditions when less engine power is required and if using a diesel engine in a diesel-electricity hybrid cycle. According to the obtained results, it can be concluded that to achieve the most negligible environmental impact, a lower share of generating power can be allocated to electricity generation in higher cycles than the share of generating electrical power in lower cycles. In other words, by increasing the engine speed, the amount of power consumption used to generate electricity relative to the power required from the diesel engine should be reduced so that the system suffers the most negligible environmental impact.
{"title":"Life Cycle Assessment of a Hybrid Self-Power Diesel Engine","authors":"F. Hashemi, R. Pourdarbani, S. Ardabili, J. L. Hernández-Hernández","doi":"10.2478/ata-2023-0003","DOIUrl":"https://doi.org/10.2478/ata-2023-0003","url":null,"abstract":"Abstract In the present study, an attempt was made to simulate the hybrid self-power generation process from a diesel engine and propose sustainable power-share management for this self-power hybrid electrical-diesel platform from the viewpoints of environmental and economic aspects (life cycle perspective). This concept means that when the engine works at part-load condition, we need to bring the engine operating conditions to optimal load, and along with doing the necessary work, in parallel, the rest of the power be used to generate electricity to be stored in the battery for more consumption in addition to reducing pollution and reducing fuel consumption by moving towards sustainable energy production. This case study examines the differences between using a diesel engine at idle and maximum load conditions when less engine power is required and if using a diesel engine in a diesel-electricity hybrid cycle. According to the obtained results, it can be concluded that to achieve the most negligible environmental impact, a lower share of generating power can be allocated to electricity generation in higher cycles than the share of generating electrical power in lower cycles. In other words, by increasing the engine speed, the amount of power consumption used to generate electricity relative to the power required from the diesel engine should be reduced so that the system suffers the most negligible environmental impact.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"26 1","pages":"17 - 28"},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48731547","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}
Pub Date : 2023-03-01DOI: 10.51558/2232-7568.2022.15.2.33
M. Habuda-Stanić
The abstracts of the papers will be published in the Book of Abstracts of the 1st European GREEN Conference. Papers will be published in the Proceedings or in the supporting journal.All submitted abstracts and papers will undergo an international peer review process.
{"title":"EGC 2023 Conference Announcement","authors":"M. Habuda-Stanić","doi":"10.51558/2232-7568.2022.15.2.33","DOIUrl":"https://doi.org/10.51558/2232-7568.2022.15.2.33","url":null,"abstract":"The abstracts of the papers will be published in the Book of Abstracts of the 1st European GREEN Conference. Papers will be published in the Proceedings or in the supporting journal.All submitted abstracts and papers will undergo an international peer review process.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"123 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81301626","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}
Pub Date : 2023-03-01DOI: 10.51558/2232-7568.2022.15.2.25
Z. Petrović, Jelena Mihajlović, T. Botic, D. Lazić, Amir Fazlić, Aleksandar Ćebić
In this paper, the possibilities and effects of using domestic industrially produced zeolite for bleaching crudesunflower oil, compared to imported commercial bleaching earth, were examined.The parameters of the bleaching process in laboratory conditionswere: temperature 95°C, contact time 30 min,and mass fractionsof bleaching agent in oil: 0.2, 1, 2 and 3%.The following methods were used to characterize the bleachingagents: XRD, FTIR, BET and SEM/EDS.The bleaching efficiency parameters were determined by laboratory methods prescribed by the relevant ordinance on edible vegetable oils, and included: soap content, peroxide valueand fatty acid composition.The results of the research showed that the effects of bleaching sunflower oil with synthetic zeolite are similar to the effects of bleaching with imported commercial bleaching earth, with the former showing a slightly higher effectiveness in reducing the peroxide value. KEYWORDS:sunflower oil; oil bleaching; synthetic zeolite; bleaching earth
{"title":"Possibility of bleaching sunflower oil with synthetic zeolite","authors":"Z. Petrović, Jelena Mihajlović, T. Botic, D. Lazić, Amir Fazlić, Aleksandar Ćebić","doi":"10.51558/2232-7568.2022.15.2.25","DOIUrl":"https://doi.org/10.51558/2232-7568.2022.15.2.25","url":null,"abstract":"In this paper, the possibilities and effects of using domestic industrially produced zeolite for bleaching crudesunflower oil, compared to imported commercial bleaching earth, were examined.The parameters of the bleaching process in laboratory conditionswere: temperature 95°C, contact time 30 min,and mass fractionsof bleaching agent in oil: 0.2, 1, 2 and 3%.The following methods were used to characterize the bleachingagents: XRD, FTIR, BET and SEM/EDS.The bleaching efficiency parameters were determined by laboratory methods prescribed by the relevant ordinance on edible vegetable oils, and included: soap content, peroxide valueand fatty acid composition.The results of the research showed that the effects of bleaching sunflower oil with synthetic zeolite are similar to the effects of bleaching with imported commercial bleaching earth, with the former showing a slightly higher effectiveness in reducing the peroxide value.\u0000KEYWORDS:sunflower oil; oil bleaching; synthetic zeolite; bleaching earth","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"22 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87623847","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}
V. Baranovsky, J. Jobbágy, S. Marynenko, M. Pankiv, Roman Komar
Abstract Fodder beet root crops in the autumn-winter period are one of the main types of juicy fodder for dairy livestock. Mechanized harvesting of fodder beet roots is a rather complex and energy-consuming technological process. The criteria that meet the requirements for the operation of root-harvesting machines are first of all the quality of digging and separation of impurities from root crops. The purpose of the work was improvement of the process of mechanized digging of fodder beets by an adapted digging-transport combined working body based on analytical and empirical research of the second feeds of constituent components of the dug pile of root crops. Based on the results of experimental studies, empirical regression equations were developed, which functionally describe the change in the second supply of the excavated components of the pile of root crops, depending on the speed of the root-harvesting machine and the rotation frequency of the drive shaft of the adapted digging-transport combined working body. Based on the comparative analysis, it was found that the discrepancy between the theoretical and approximated experimental values of second feeds is 5–10%. The results of the study are a further step in improving the method of optimizing the parameters of working bodies for digging and cleaning root crops from impurities.
{"title":"Theoretical and Experimental Investigations of the Second Serve of Root Crop Pile Components","authors":"V. Baranovsky, J. Jobbágy, S. Marynenko, M. Pankiv, Roman Komar","doi":"10.2478/ata-2023-0007","DOIUrl":"https://doi.org/10.2478/ata-2023-0007","url":null,"abstract":"Abstract Fodder beet root crops in the autumn-winter period are one of the main types of juicy fodder for dairy livestock. Mechanized harvesting of fodder beet roots is a rather complex and energy-consuming technological process. The criteria that meet the requirements for the operation of root-harvesting machines are first of all the quality of digging and separation of impurities from root crops. The purpose of the work was improvement of the process of mechanized digging of fodder beets by an adapted digging-transport combined working body based on analytical and empirical research of the second feeds of constituent components of the dug pile of root crops. Based on the results of experimental studies, empirical regression equations were developed, which functionally describe the change in the second supply of the excavated components of the pile of root crops, depending on the speed of the root-harvesting machine and the rotation frequency of the drive shaft of the adapted digging-transport combined working body. Based on the comparative analysis, it was found that the discrepancy between the theoretical and approximated experimental values of second feeds is 5–10%. The results of the study are a further step in improving the method of optimizing the parameters of working bodies for digging and cleaning root crops from impurities.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"26 1","pages":"49 - 58"},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46140396","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}
Y. Syromyatnikov, I. Semenenko, K. Maksimovich, Irina Troyanovskaya, A. Karnaukhov, Alexandra Orekhovskaya, S. Voinash
Abstract For seed germination and the formation of a good soybean crop, significant reserves of soil moisture are required, which depends on the autumn-winter soil preparation, weather conditions and planting dates. The purpose of this study is to identify the impact of the main tillage technology on its agrophysical properties and conditions for the growth and development of soybean plants. Experimental crop rotation: soybean – winter wheat was carried out under favourable (hydrothermal coefficient 1.46) and dry (hydrothermal coefficient 0.66–0.87) weather conditions. The main tillage was carried out with a stratifier PRSM-5 to a depth of 15–17 cm or a chisel plough PCh-2.5 to a depth of 25–27 cm, with additional pre-sowing or post-sowing rolling with a ring-spur roller KKSH. Sowing was carried out at a depth of 10 cm with stable heating of the soil in three periods: the first at 8–10 °С, the second at 10–12 °С, and the third at 12–14 °С. As a result of evaluating the influence of various factors, it was found that under favourable conditions, the highest seed productivity of soybean plants (1.91–1.96 t·ha−1) was formed after treatment with the stratifier PRSM-5 at the first sowing period and at the second sowing period after chisel ploughing with additional soil compaction. In dry weather conditions, pre-sowing treatment with a stratifier PRSM-5 had an advantage in seed productivity by 7–12% compared to ploughing with a chisel plough PCH-2.5.
{"title":"Influence of Agrotechnical Practices and Sowing Time in Various Weather on Soybean Yield","authors":"Y. Syromyatnikov, I. Semenenko, K. Maksimovich, Irina Troyanovskaya, A. Karnaukhov, Alexandra Orekhovskaya, S. Voinash","doi":"10.2478/ata-2023-0002","DOIUrl":"https://doi.org/10.2478/ata-2023-0002","url":null,"abstract":"Abstract For seed germination and the formation of a good soybean crop, significant reserves of soil moisture are required, which depends on the autumn-winter soil preparation, weather conditions and planting dates. The purpose of this study is to identify the impact of the main tillage technology on its agrophysical properties and conditions for the growth and development of soybean plants. Experimental crop rotation: soybean – winter wheat was carried out under favourable (hydrothermal coefficient 1.46) and dry (hydrothermal coefficient 0.66–0.87) weather conditions. The main tillage was carried out with a stratifier PRSM-5 to a depth of 15–17 cm or a chisel plough PCh-2.5 to a depth of 25–27 cm, with additional pre-sowing or post-sowing rolling with a ring-spur roller KKSH. Sowing was carried out at a depth of 10 cm with stable heating of the soil in three periods: the first at 8–10 °С, the second at 10–12 °С, and the third at 12–14 °С. As a result of evaluating the influence of various factors, it was found that under favourable conditions, the highest seed productivity of soybean plants (1.91–1.96 t·ha−1) was formed after treatment with the stratifier PRSM-5 at the first sowing period and at the second sowing period after chisel ploughing with additional soil compaction. In dry weather conditions, pre-sowing treatment with a stratifier PRSM-5 had an advantage in seed productivity by 7–12% compared to ploughing with a chisel plough PCH-2.5.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"26 1","pages":"9 - 16"},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49361114","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}
Abstract Increasing the accuracy of position measurement is an intensively addressed issue in engineering practice. Indirect methods provide satisfactory distance information. For more accurate identification of surface geometry or tilt, systems based on image processing are frequently employed, however, these are more expensive in contrast to devices operating on the basis of acoustic principle. This paper deals with the modelling of the impulse functions of ultrasonic sensors under known geometrical conditions of their distribution. The reflecting surface is a metallic surface. Based on the results, a statistically significant non-linear correlation between the complex integral of the impulse function and the front time of the transient characteristic is shown. The change from the parallel to the perpendicular case of the longitudinal axis of ultrasonic transducer distribution due to the change in the tilt angle of reflected surface is also included in the study. The interval of change in the tilt angle of reflecting surface was from 0° to 30°.
{"title":"Modelling of Impulse Functions of Ultrasonic Sensors When Tilt Angle of Reflecting Surface is Changed","authors":"Vladimír Madola, V. Cviklovič, K. Rokosz","doi":"10.2478/ata-2023-0001","DOIUrl":"https://doi.org/10.2478/ata-2023-0001","url":null,"abstract":"Abstract Increasing the accuracy of position measurement is an intensively addressed issue in engineering practice. Indirect methods provide satisfactory distance information. For more accurate identification of surface geometry or tilt, systems based on image processing are frequently employed, however, these are more expensive in contrast to devices operating on the basis of acoustic principle. This paper deals with the modelling of the impulse functions of ultrasonic sensors under known geometrical conditions of their distribution. The reflecting surface is a metallic surface. Based on the results, a statistically significant non-linear correlation between the complex integral of the impulse function and the front time of the transient characteristic is shown. The change from the parallel to the perpendicular case of the longitudinal axis of ultrasonic transducer distribution due to the change in the tilt angle of reflected surface is also included in the study. The interval of change in the tilt angle of reflecting surface was from 0° to 30°.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"26 1","pages":"1 - 8"},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46693349","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}
S. N. Faridah, S. Samsuar, H. Mubarak, Tisha Aditya A. Jamaluddin, G. Hardinasinta, Reski Amalia, N. Lestari
Abstract Ginger (Zingiber officinale var. rubrum) is a rhizome plant that can benefit health, fitness and be used as a spice. The content contained in ginger can prevent and treat various diseases and act as an antioxidant and anti-inflammatory agent. The cultivation of ginger plants requires adequate nutrients and water for development and growth. Crop water requirements are influenced by crop coefficients which vary according to the plant growth stage. The crop coefficient values are needed for irrigation management and increasing irrigation efficiency. The main objective of the current study was to investigate the crop coefficient value of ginger by lysimeter. Lysimeter is a water balance device with the principle of mass conservation, where the input is rainfall and irrigation while the output is percolation and evapotranspiration. The rainfall during the investigated period was 0–62.82 mm·day−1, humidity 70.7–89.4%, and air temperature 23.7–32.9 °C. The crop coefficient of ginger increased during the vegetative growth period, i.e., 0.997 in the seedling stage, 1.072 in the tiller stage, and 1.138 in the advanced vegetative stage. The crop coefficient of red ginger was determined using a lysimeter quite accurately, with a coefficient of determination value (R2) 0.950 and a significant value of F less than 0.05.
{"title":"The Crop Coefficient of Ginger (Zingiber officinale var. rubrum) during Vegetative Growth in Eastern Indonesia","authors":"S. N. Faridah, S. Samsuar, H. Mubarak, Tisha Aditya A. Jamaluddin, G. Hardinasinta, Reski Amalia, N. Lestari","doi":"10.2478/ata-2023-0005","DOIUrl":"https://doi.org/10.2478/ata-2023-0005","url":null,"abstract":"Abstract Ginger (Zingiber officinale var. rubrum) is a rhizome plant that can benefit health, fitness and be used as a spice. The content contained in ginger can prevent and treat various diseases and act as an antioxidant and anti-inflammatory agent. The cultivation of ginger plants requires adequate nutrients and water for development and growth. Crop water requirements are influenced by crop coefficients which vary according to the plant growth stage. The crop coefficient values are needed for irrigation management and increasing irrigation efficiency. The main objective of the current study was to investigate the crop coefficient value of ginger by lysimeter. Lysimeter is a water balance device with the principle of mass conservation, where the input is rainfall and irrigation while the output is percolation and evapotranspiration. The rainfall during the investigated period was 0–62.82 mm·day−1, humidity 70.7–89.4%, and air temperature 23.7–32.9 °C. The crop coefficient of ginger increased during the vegetative growth period, i.e., 0.997 in the seedling stage, 1.072 in the tiller stage, and 1.138 in the advanced vegetative stage. The crop coefficient of red ginger was determined using a lysimeter quite accurately, with a coefficient of determination value (R2) 0.950 and a significant value of F less than 0.05.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"26 1","pages":"36 - 41"},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69181095","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}
Gufran Abd, A. Jalil, Indrajit Patra, Samar Emad Izzat, Ngakan Ketut Acwin Dwijendra, S. Aravindhan, M. H. Vini, S. Daneshmand
Abstract Materials and alloys usually possess distinct properties. In contrast to conventional materials, employment of bi-metal laminates allows achievement of better performance in various properties, such as light density, high strength, high corrosion and wear resistances. Moreover, considering the agriculture machinery and equipment, there is a growing demand for utilization of advanced materials with improved mechanical properties and durability. Bonding (RB) process is one of the new novel methods for production of bi-metal laminates. The study presented explores the asymmetric roll bonding for the purposes of fabrication of bi-metal Al/Br laminates with thickness reduction ratios 10–30% with mismatch speed ratios of 1 : 1.05, 1 : 1.1 and 1 : 1.15. Furthermore, finite element simulation of roll bonding process was investigated using ABAQUS software. Additionally, to improve the bonding strength, the effect of mismatch speed ratios was investigated. Finally, utilizing the scanning electron microscopy (SEM), the bonding surface morphology of samples was studied.
{"title":"Numerical and Experimental Investigation of Bonding Evolution of Bi-Metal Al/Br Laminates Fabricated Via Asymmetric Roll Bonding","authors":"Gufran Abd, A. Jalil, Indrajit Patra, Samar Emad Izzat, Ngakan Ketut Acwin Dwijendra, S. Aravindhan, M. H. Vini, S. Daneshmand","doi":"10.2478/ata-2023-0008","DOIUrl":"https://doi.org/10.2478/ata-2023-0008","url":null,"abstract":"Abstract Materials and alloys usually possess distinct properties. In contrast to conventional materials, employment of bi-metal laminates allows achievement of better performance in various properties, such as light density, high strength, high corrosion and wear resistances. Moreover, considering the agriculture machinery and equipment, there is a growing demand for utilization of advanced materials with improved mechanical properties and durability. Bonding (RB) process is one of the new novel methods for production of bi-metal laminates. The study presented explores the asymmetric roll bonding for the purposes of fabrication of bi-metal Al/Br laminates with thickness reduction ratios 10–30% with mismatch speed ratios of 1 : 1.05, 1 : 1.1 and 1 : 1.15. Furthermore, finite element simulation of roll bonding process was investigated using ABAQUS software. Additionally, to improve the bonding strength, the effect of mismatch speed ratios was investigated. Finally, utilizing the scanning electron microscopy (SEM), the bonding surface morphology of samples was studied.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":"26 1","pages":"59 - 64"},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44202326","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}
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