The growth of the economy is one of the aims of every country, as it ensures an improved standard of living for the citizens of such countries. One of the ways this economic growth can be achieved is by investing in technologies that can yield more efficiency in operations while reducing overall costs. The developed nations have more economic prowess because of their heavy investment in technological development, which sometimes could be elusive in developing nations. Open-source software, however, levels the playing ground as it presents strengths that can drive innovation faster than can be achieved with the proprietary software development paradigm. Emerging technologies on the other hand present transformative powers that can catalyze the economic growth of the countries that can efficiently apply them. This paper examines the key characteristics of open-source software alongside emerging technologies to establish the impact of open-source software on emerging technologies and its wider impact on economic growth. Specific emerging technologies where open-source concepts are being applied were examined to reveal the positive impact of open-source software, while at the same time, specific emerging technologies that are creating disruptions that drive economic growth were investigated. It was finally concluded that open-source software presents key strengths, which when combined with the disruptive powers of emerging technologies, presents tremendous potential to increase the economic growth of the country in which it is implemented.
{"title":"Open-source software in emerging technologies for economic growth","authors":"Eseosa Ehioghae, S. Idowu","doi":"10.5935/JETIA.V7I27.730","DOIUrl":"https://doi.org/10.5935/JETIA.V7I27.730","url":null,"abstract":"The growth of the economy is one of the aims of every country, as it ensures an improved standard of living for the citizens of such countries. One of the ways this economic growth can be achieved is by investing in technologies that can yield more efficiency in operations while reducing overall costs. The developed nations have more economic prowess because of their heavy investment in technological development, which sometimes could be elusive in developing nations. Open-source software, however, levels the playing ground as it presents strengths that can drive innovation faster than can be achieved with the proprietary software development paradigm. Emerging technologies on the other hand present transformative powers that can catalyze the economic growth of the countries that can efficiently apply them. This paper examines the key characteristics of open-source software alongside emerging technologies to establish the impact of open-source software on emerging technologies and its wider impact on economic growth. Specific emerging technologies where open-source concepts are being applied were examined to reveal the positive impact of open-source software, while at the same time, specific emerging technologies that are creating disruptions that drive economic growth were investigated. It was finally concluded that open-source software presents key strengths, which when combined with the disruptive powers of emerging technologies, presents tremendous potential to increase the economic growth of the country in which it is implemented.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130363380","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}
Miguel Aybar Mejias, Yandi G. Landera, Lesyani T. Leon Viltre
Among the various renewable energy sources, photovoltaic (PV) systems are experiencing a great expansion, due to their low polluting levels, the abundance of solar energy and the cost decreasing of PV technologies, attracting research and investments in the field. The maximum power generated in a PV panel varies according to irradiation and temperature. Since the conversion efficiency of photovoltaic modules is low, it is necessary to implement sophisticated control techniques for monitoring the maximum power point (MPPT). Maximum power point tracking techniques are automatic control algorithms that adjust power interfaces to achieve the maximum power generation, during variations in irradiation, temperature, and characteristics of the photovoltaic module. The purpose of the MPPT is to adjust the solar panel operating voltage near the maximum power point (MPP) according to environmental conditions. This technique has become an essential component in photovoltaic power system designs. This article presents comparison of the performance of various MPPT tracking methods in photovoltaic systems using the MATLAB/Simulink software and a comparative approach.
{"title":"Comparison of maximum power point tracking techniques used in photovoltaic system","authors":"Miguel Aybar Mejias, Yandi G. Landera, Lesyani T. Leon Viltre","doi":"10.5935/JETIA.V7I27.729","DOIUrl":"https://doi.org/10.5935/JETIA.V7I27.729","url":null,"abstract":"Among the various renewable energy sources, photovoltaic (PV) systems are experiencing a great expansion, due to their low polluting levels, the abundance of solar energy and the cost decreasing of PV technologies, attracting research and investments in the field. The maximum power generated in a PV panel varies according to irradiation and temperature. Since the conversion efficiency of photovoltaic modules is low, it is necessary to implement sophisticated control techniques for monitoring the maximum power point (MPPT). Maximum power point tracking techniques are automatic control algorithms that adjust power interfaces to achieve the maximum power generation, during variations in irradiation, temperature, and characteristics of the photovoltaic module. The purpose of the MPPT is to adjust the solar panel operating voltage near the maximum power point (MPP) according to environmental conditions. This technique has become an essential component in photovoltaic power system designs. This article presents comparison of the performance of various MPPT tracking methods in photovoltaic systems using the MATLAB/Simulink software and a comparative approach.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121040695","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}
The study aims to assess the biodiversity conservation initiative in Nepal. The focus group discussion, score ranking, key informant interview, field observation methods were used to collect the information from the study areas. The study focused on Terai Arc landscape, National Conservation Areas and Sacred Himalayan Landscape of Nepal. In the areas around 5000 ha forests have been restored in different critical corridors and 1085 ha grassland had been managed across TAL which has supported in improving quality habitat for Tiger, its prey based species and other wildlife species. The overwhelming majority of the respondents (98.63%) have found happy with the programs because the improvement of sustainable livelihoods of the poor people, conservation of species and ecosystem conservation, sustainable forest management, alternative energy and conservation education and capacity building of women, men, youths, ethnic groups and conflict affected people. There has been increased species population like tiger, rhino, snow leopard, blue sheep etc; increased community stewardship, habitat restoration and livelihood enhancement. The program launched with government and civil society organizations that lead to sustainability of the program. There have been faced challenges in order to wildlife conservation that include human-wildlife conflict, limited resources, transboundary movement and wildlife trade etc.
{"title":"Biodiversity conservation initiative in Nepal","authors":"Narbikram Thapa","doi":"10.5935/jetia.v6i26.695","DOIUrl":"https://doi.org/10.5935/jetia.v6i26.695","url":null,"abstract":"The study aims to assess the biodiversity conservation initiative in Nepal. The focus group discussion, score ranking, key informant interview, field observation methods were used to collect the information from the study areas. The study focused on Terai Arc landscape, National Conservation Areas and Sacred Himalayan Landscape of Nepal. In the areas around 5000 ha forests have been restored in different critical corridors and 1085 ha grassland had been managed across TAL which has supported in improving quality habitat for Tiger, its prey based species and other wildlife species. The overwhelming majority of the respondents (98.63%) have found happy with the programs because the improvement of sustainable livelihoods of the poor people, conservation of species and ecosystem conservation, sustainable forest management, alternative energy and conservation education and capacity building of women, men, youths, ethnic groups and conflict affected people. There has been increased species population like tiger, rhino, snow leopard, blue sheep etc; increased community stewardship, habitat restoration and livelihood enhancement. The program launched with government and civil society organizations that lead to sustainability of the program. There have been faced challenges in order to wildlife conservation that include human-wildlife conflict, limited resources, transboundary movement and wildlife trade etc.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121919135","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}
In this article, documented results of natural radionuclide concentrations in tailings at Rosterman gold mine, Kakamega county, Kenya were evaluated. Thirty tailing samples from Rosterman gold mine were collected as per standard sampling procedures and were analyzed for 238U, 232Th and 40K by NaI (TI) gamma-ray spectroscopy. The activities of 238U, 232Th and 40K was found to vary from 39 ± 1.63 Bq/Kg to 118 ± 4.43 Bq/Kg, 72 ± 2.24 Bq/Kg to 223 ± 8.36 Bq/Kg and 85 ± 3.6 Bq/Kg to 362 ± 10.65 Bq/Kg respectively. Radium equivalent activities were found below 370 Bq/Kg in all the collected samples. External gamma dose rates estimated from the levels of radionuclides in sediments had a range of 32 ± 3.4 nGy/h to 68 ± 5.83 nGy/h. Hence, mining of gold at Rosterman has minimal significant health implications to the general population and the miners.
{"title":"Natural radioactivity and external dose rates in tailing samples from Rosterman gold mine, Kakamega county, Kenya","authors":"C. Wanyama, J. Makokha, F. Masinde, M. N. Waswa","doi":"10.5935/jetia.v6i26.718","DOIUrl":"https://doi.org/10.5935/jetia.v6i26.718","url":null,"abstract":"In this article, documented results of natural radionuclide concentrations in tailings at Rosterman gold mine, Kakamega county, Kenya were evaluated. Thirty tailing samples from Rosterman gold mine were collected as per standard sampling procedures and were analyzed for 238U, 232Th and 40K by NaI (TI) gamma-ray spectroscopy. The activities of 238U, 232Th and 40K was found to vary from 39 ± 1.63 Bq/Kg to 118 ± 4.43 Bq/Kg, 72 ± 2.24 Bq/Kg to 223 ± 8.36 Bq/Kg and 85 ± 3.6 Bq/Kg to 362 ± 10.65 Bq/Kg respectively. Radium equivalent activities were found below 370 Bq/Kg in all the collected samples. External gamma dose rates estimated from the levels of radionuclides in sediments had a range of 32 ± 3.4 nGy/h to 68 ± 5.83 nGy/h. Hence, mining of gold at Rosterman has minimal significant health implications to the general population and the miners.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115146624","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}
Brazil offers to the national and international tourists a wide range of options, being the natural areas, the most popular tourist product, a combination of ecotourism with recreation, sun and beach tourism, adventure tourism, and historic cultural tourism. Creating richness and growing the consumption and production of the area. Tourism has great meaning to a city like Manaus, who still shows potential problems to your utilization, among them is mentioned the lack of disclosure, precarious infrastructure, security problems, and the missing of qualification guides to prest assistance to the city visitors. It is Presented the platform and previous results, (InGuia) who can contribute to the problem resolution on finding specialized professionals to prest guide service in the local tours and provides rich and trust information, all completed and updated about all the tourism richness of a place all of this in several languages, which is extremely important knowing how is the variety of nationalities that visit Brazil. Since Manaus Tourism has great potential, with a huge variety of places to visit, we present how Manaus loses all this potential with a bad experience given to the tourist caused by the missing of defined and actualized information. Besides that, it is also difficult for the ones who work directly with tourism, as in the case of the Guides, who suffer to create contact with the tourist. InGuia comes as a purpose to solve these problems, given to the tourist the opportunity to know better the place where he goes to visit, bringing precise information, easy to understand, and easy access. In addition to creating opportunities for Guides to reposition themselves in the market, allowing a better view of the service he proposes. In that way, InGuia helps both tourists who wish to have a better tourist experience, traveling with more convenience and practicality, now that they know they can easily find the information they need, as well as supporting the Guides, allowing the easy exposure of their services. Keywords: Tourism, Information, development.
{"title":"InGuia: An incentive to the tourism development in Manaus with a Digital Platform supports","authors":"J. Marques, Bruno Ribeiro, M. Nascimento","doi":"10.5935/jetia.v6i26.684","DOIUrl":"https://doi.org/10.5935/jetia.v6i26.684","url":null,"abstract":"Brazil offers to the national and international tourists a wide range of options, being the natural areas, the most popular tourist product, a combination of ecotourism with recreation, sun and beach tourism, adventure tourism, and historic cultural tourism. Creating richness and growing the consumption and production of the area. Tourism has great meaning to a city like Manaus, who still shows potential problems to your utilization, among them is mentioned the lack of disclosure, precarious infrastructure, security problems, and the missing of qualification guides to prest assistance to the city visitors. It is Presented the platform and previous results, (InGuia) who can contribute to the problem resolution on finding specialized professionals to prest guide service in the local tours and provides rich and trust information, all completed and updated about all the tourism richness of a place all of this in several languages, which is extremely important knowing how is the variety of nationalities that visit Brazil. Since Manaus Tourism has great potential, with a huge variety of places to visit, we present how Manaus loses all this potential with a bad experience given to the tourist caused by the missing of defined and actualized information. Besides that, it is also difficult for the ones who work directly with tourism, as in the case of the Guides, who suffer to create contact with the tourist. InGuia comes as a purpose to solve these problems, given to the tourist the opportunity to know better the place where he goes to visit, bringing precise information, easy to understand, and easy access. In addition to creating opportunities for Guides to reposition themselves in the market, allowing a better view of the service he proposes. In that way, InGuia helps both tourists who wish to have a better tourist experience, traveling with more convenience and practicality, now that they know they can easily find the information they need, as well as supporting the Guides, allowing the easy exposure of their services. \u0000Keywords: Tourism, Information, development.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127152567","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}
Earthquake resistance building design is the most important thing to ensure safety and minimize loss in recent years. Nowadays, many techniques are being used in earthquake resistance building design. Base-isolation is one of the best techniques used in earthquake resistant design building in economical. It reduces seismic energy transmitted to buildings, in highly seismic prone areas. Lead Rubber Bearings are the most widely used technology in seismic base isolation, because of its technical and economic effectiveness and reliability. In this research, a multi-storied building that is located in Dhaka city is performed at numerically design as a base isolation building where the lead rubber bearing is designed and used as isolator. The building is analyzed for El Centro earthquake data of 15, 20, and 25 second. For base isolated and non-isolated condition nonlinear time history analysis is done using SAP2000 18. By comparing displacement vs time, acceleration vs time graphs for base isolated and non-isolated condition, the displacement difference between top and bottom floor is almost close that indicates this building structural behavior better during lateral load.
{"title":"Base isolation of multi-storied building using lead rubber bearing","authors":"A. Amin, Mufedul Islam, Md. Jobaer Ahamed","doi":"10.5935/jetia.v6i26.697","DOIUrl":"https://doi.org/10.5935/jetia.v6i26.697","url":null,"abstract":"Earthquake resistance building design is the most important thing to ensure safety and minimize loss in recent years. Nowadays, many techniques are being used in earthquake resistance building design. Base-isolation is one of the best techniques used in earthquake resistant design building in economical. It reduces seismic energy transmitted to buildings, in highly seismic prone areas. Lead Rubber Bearings are the most widely used technology in seismic base isolation, because of its technical and economic effectiveness and reliability. In this research, a multi-storied building that is located in Dhaka city is performed at numerically design as a base isolation building where the lead rubber bearing is designed and used as isolator. The building is analyzed for El Centro earthquake data of 15, 20, and 25 second. For base isolated and non-isolated condition nonlinear time history analysis is done using SAP2000 18. By comparing displacement vs time, acceleration vs time graphs for base isolated and non-isolated condition, the displacement difference between top and bottom floor is almost close that indicates this building structural behavior better during lateral load.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116068041","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}
I. R. Rico, R. J. C. Carrazana, Yeslié González Bermúdez
This work presents an experimental study on a laboratory scale about the hydrodynamic behavior of fluid flow in a tubular reactor and a stirred tank reactor in-series and varying their arrangement. The experiments were carried out using stimulus-response techniques with a tracer solution of sodium chloride in unit pulse form. The experimental results allowed obtaining the Residence Time Distribution curves Rθ vs θ for different reactor arrangements. The results obtained are similar to those reported by Levenspiel for a battery in-series with a plug flow reactor and a perfectly stirred reactor. The difference found with the studied system is that these show dead water in both equipment. The arrangement of the reactors does not modify the graph of Residence Times Distribution obtained, similar to the ideal situation presented in the literature consulted. As a result of the experimental study and the adjustment of the data, a non-ideal flow model was obtained for different kinds of reactors with dead water, connected in-series and with different arrangements. The simulation of the system for different degrees of back mixing in the system reflects a behavior similar to that of series of reactors of this type, but with ideal behavior.
本文在实验室尺度上对管式反应器和搅拌槽式反应器串联及不同排列方式下流体流动的水动力特性进行了实验研究。实验采用单位脉冲形式的氯化钠示踪溶液刺激-反应技术进行。实验结果得到了不同反应器布置下的停留时间分布曲线Rθ vs θ。所得到的结果与Levenspiel报道的具有塞流反应器和完全搅拌反应器的串联电池的结果相似。与所研究系统的不同之处在于，这两种设备都显示有死水。反应器的布置并没有改变所得的停留时间分布图，与参考文献中提出的理想情况相似。通过实验研究和数据调整，得到了不同类型含死水反应器串联和不同布置方式下的非理想流动模型。对系统中不同程度的反混合进行了模拟，反映出与该类型的一系列反应器相似的行为，但具有理想的行为。
{"title":"Non-ideal flow model for a tubular reactor and a stirred tank reactor in-series, using stimulus-response techniques","authors":"I. R. Rico, R. J. C. Carrazana, Yeslié González Bermúdez","doi":"10.5935/jetia.v6i26.721","DOIUrl":"https://doi.org/10.5935/jetia.v6i26.721","url":null,"abstract":"This work presents an experimental study on a laboratory scale about the hydrodynamic behavior of fluid flow in a tubular reactor and a stirred tank reactor in-series and varying their arrangement. The experiments were carried out using stimulus-response techniques with a tracer solution of sodium chloride in unit pulse form. The experimental results allowed obtaining the Residence Time Distribution curves Rθ vs θ for different reactor arrangements. The results obtained are similar to those reported by Levenspiel for a battery in-series with a plug flow reactor and a perfectly stirred reactor. The difference found with the studied system is that these show dead water in both equipment. The arrangement of the reactors does not modify the graph of Residence Times Distribution obtained, similar to the ideal situation presented in the literature consulted. As a result of the experimental study and the adjustment of the data, a non-ideal flow model was obtained for different kinds of reactors with dead water, connected in-series and with different arrangements. The simulation of the system for different degrees of back mixing in the system reflects a behavior similar to that of series of reactors of this type, but with ideal behavior.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121028039","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}
Problems based on agricultural activities are increasingly adversely affecting the environment and living health mostly due to chemical inputs used which cause concerns globally. One of the non-chemical weed control methods is the microwave weed control method. The purpose of this research is to propose an environmentally friendly agricultural machine design that can be an alternative to harmful chemicals used in weed control. In this study, microwave generators (magnetron) receive their energy from a generator fed from the tractor shaft. Multiple magnetrons, control, and leakage unit, and waveguides operating at 2.45 GHz ISM will be used. The design includes a magnetic shunt transformer, a high voltage capacitor, a filter, and a cooling fan with each magnetron where microwave leaks that occur during applications can be controlled and magnetron activities can also be monitored. Field applications and tractor working conditions will be analyzed and the device will be re-designed and developed according to the needs. In this study, unlike the other studies, more than one magnetron will be used and the device is designed for open agricultural areas applications. This design and application area differences are the most important feature that distinguishes this study from others, and it is made for the first time. Its use is expected to occur in all countries with similar characteristics for agricultural production.
{"title":"A proposal to design and develop a microwave weed controller for agricultural use","authors":"H. Şahin, M. Aydoğdu, Mehmet Reşit Sevinç","doi":"10.5935/jetia.v6i26.720","DOIUrl":"https://doi.org/10.5935/jetia.v6i26.720","url":null,"abstract":"Problems based on agricultural activities are increasingly adversely affecting the environment and living health mostly due to chemical inputs used which cause concerns globally. One of the non-chemical weed control methods is the microwave weed control method. The purpose of this research is to propose an environmentally friendly agricultural machine design that can be an alternative to harmful chemicals used in weed control. In this study, microwave generators (magnetron) receive their energy from a generator fed from the tractor shaft. Multiple magnetrons, control, and leakage unit, and waveguides operating at 2.45 GHz ISM will be used. The design includes a magnetic shunt transformer, a high voltage capacitor, a filter, and a cooling fan with each magnetron where microwave leaks that occur during applications can be controlled and magnetron activities can also be monitored. Field applications and tractor working conditions will be analyzed and the device will be re-designed and developed according to the needs. In this study, unlike the other studies, more than one magnetron will be used and the device is designed for open agricultural areas applications. This design and application area differences are the most important feature that distinguishes this study from others, and it is made for the first time. Its use is expected to occur in all countries with similar characteristics for agricultural production.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126497385","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}
R. D. Barón, Carlos Jose Guillen Churio, J. Bermudez
A shake-type low-fat yogurt prepared with highly esterified pectin extracted from valence orange by acid hydrolysis with conventional heating was evaluated. A completely randomized design was used with experimental and commercial pectin (0.15, 0.3, 0.45%), and a control. Cow's milk was adjusted to 1.5% fat, with skimmed milk powder and pasteurization at 85oC, 30 min and sucralose and lyophilized lactic culture were added with stirring, until acidity 0.58% and pH 4.74. Pectin was added as a stabilizer and subsequent refrigeration and storage at 5oC ± 1oC. Acidity, pH, syneresis and viscosity were evaluated for 28 days and sensory analysis by seven trained judges (NTC 4129), ten days after the yogurt was elaborated, using discriminatory test of multiple comparisons. The highest acidity and syneresis was found in the control and the two pectins (commercial and experimental) behave the same at equal percentages. Treatment with 0.15% and 0.3% of experimental pectin show a color close to the control and show slight statistical differences between them. Yogurt with less than 0.3% pectin presents an identical flavor to the commercial one and higher ones present differences with the control and affect the final flavor of the product. Yogurt with 0.3% experimental pectin presents a body without lumps, without syneresis, firm and smooth consistency, maintains the characteristic smell, aroma and flavor and meets the requirements of the NTC 805 standard, with a maximum of 0.5% fat, minimum of 2.6 % protein and 0.6% acidity with a shelf life of 22 days.
{"title":"Addition of high esterification pectin as a stabilizer in the production of low fat yogurt","authors":"R. D. Barón, Carlos Jose Guillen Churio, J. Bermudez","doi":"10.5935/jetia.v6i26.699","DOIUrl":"https://doi.org/10.5935/jetia.v6i26.699","url":null,"abstract":"A shake-type low-fat yogurt prepared with highly esterified pectin extracted from valence orange by acid hydrolysis with conventional heating was evaluated. A completely randomized design was used with experimental and commercial pectin (0.15, 0.3, 0.45%), and a control. Cow's milk was adjusted to 1.5% fat, with skimmed milk powder and pasteurization at 85oC, 30 min and sucralose and lyophilized lactic culture were added with stirring, until acidity 0.58% and pH 4.74. Pectin was added as a stabilizer and subsequent refrigeration and storage at 5oC ± 1oC. Acidity, pH, syneresis and viscosity were evaluated for 28 days and sensory analysis by seven trained judges (NTC 4129), ten days after the yogurt was elaborated, using discriminatory test of multiple comparisons. The highest acidity and syneresis was found in the control and the two pectins (commercial and experimental) behave the same at equal percentages. Treatment with 0.15% and 0.3% of experimental pectin show a color close to the control and show slight statistical differences between them. Yogurt with less than 0.3% pectin presents an identical flavor to the commercial one and higher ones present differences with the control and affect the final flavor of the product. Yogurt with 0.3% experimental pectin presents a body without lumps, without syneresis, firm and smooth consistency, maintains the characteristic smell, aroma and flavor and meets the requirements of the NTC 805 standard, with a maximum of 0.5% fat, minimum of 2.6 % protein and 0.6% acidity with a shelf life of 22 days.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130285383","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}
Recurring problems in the delivery of construction projects have been time and cost overruns, poor quality, poor health and safety, waste and loss of value. This situation is worsened by the reluctance of construction organisations to fully implement lean construction technique which has proved to be an innovative solution to these problems. This study assessed construction professionals’ perception of the awareness, adoption and benefits of lean construction in remedying poor construction project performance in the south-south region of Nigeria. A well-structure questionnaire distributed by hand and electronically using the snowball sampling technique were used to gather data from the participants from both the private and public organisations. Frequency, percentage and factor analysis were used to analyse the collected data. It was found that the level of awareness of lean construction is high but it s adoption is low. Lean construction is a panacea for poor construction project performance because of it s cost related benefits, value and relationship benefits, environmental benefits, quality improvement benefits, motivation and productivity benefits, profitability and market benefits, time and work flow benefits, waste reduction benefits, and HS and rework reduction benefits. The creation of dedicated department/team for driving the lean initiative is recommended.
{"title":"Lean construction as a panacea for poor construction projects performance","authors":"W. Nwaki, Chidiebere Emmanuel Eze","doi":"10.5935/jetia.v6i26.723","DOIUrl":"https://doi.org/10.5935/jetia.v6i26.723","url":null,"abstract":"Recurring problems in the delivery of construction projects have been time and cost overruns, poor quality, poor health and safety, waste and loss of value. This situation is worsened by the reluctance of construction organisations to fully implement lean construction technique which has proved to be an innovative solution to these problems. This study assessed construction professionals’ perception of the awareness, adoption and benefits of lean construction in remedying poor construction project performance in the south-south region of Nigeria. A well-structure questionnaire distributed by hand and electronically using the snowball sampling technique were used to gather data from the participants from both the private and public organisations. Frequency, percentage and factor analysis were used to analyse the collected data. It was found that the level of awareness of lean construction is high but it s adoption is low. Lean construction is a panacea for poor construction project performance because of it s cost related benefits, value and relationship benefits, environmental benefits, quality improvement benefits, motivation and productivity benefits, profitability and market benefits, time and work flow benefits, waste reduction benefits, and HS and rework reduction benefits. The creation of dedicated department/team for driving the lean initiative is recommended.","PeriodicalId":236176,"journal":{"name":"Journal of Engineering and Technology for Industrial Applications","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128430115","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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