Three-dimensional braided composite materials have the advantages of high specific strength and good specific rigidity, they are widely used in various fields. With the help of the full-scale macrostructure model finite element analysis method to pre-test the mechanical properties of the axial compression, the simulation can observe the failure process, stress distribution and propagation form of the pipe, and study its failure mechanism. Then verify the correctness of the simulation through experiments. The conclusion is that the compressive performance of the material changes with the change in the braid angle. A smaller braiding angle can bear a larger load, but its material failure process is relatively rapid, and the load drop increases as the braiding angle decreases.
{"title":"Effect of Braid Angle on Crushing Performance of Double-Layer Carbon Fiber Composite Pipe","authors":"Huie Hu, Wen Wang, Yinping Hu, G. Zhao","doi":"10.56397/ist.2023.05.04","DOIUrl":"https://doi.org/10.56397/ist.2023.05.04","url":null,"abstract":"Three-dimensional braided composite materials have the advantages of high specific strength and good specific rigidity, they are widely used in various fields. With the help of the full-scale macrostructure model finite element analysis method to pre-test the mechanical properties of the axial compression, the simulation can observe the failure process, stress distribution and propagation form of the pipe, and study its failure mechanism. Then verify the correctness of the simulation through experiments. The conclusion is that the compressive performance of the material changes with the change in the braid angle. A smaller braiding angle can bear a larger load, but its material failure process is relatively rapid, and the load drop increases as the braiding angle decreases.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85925203","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 paper, we provide a concise refutation to the fringe arguments brought up by Herbert Dingle against special relativity.
在本文中，我们对赫伯特·丁格尔提出的反对狭义相对论的边缘论点进行了简明的反驳。
{"title":"Dingle’s “Clock Paradox” Disproof","authors":"A. Sfarti","doi":"10.56397/ist.2023.05.05","DOIUrl":"https://doi.org/10.56397/ist.2023.05.05","url":null,"abstract":"In this paper, we provide a concise refutation to the fringe arguments brought up by Herbert Dingle against special relativity.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78296036","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}
Overhead travelling cranes are infrastructure for building construction and their main purpose is to ensure accurate and rapid transport of goods to a given location in the shortest possible time without any residual oscillation. The overhead crane is also a typical underdrive method, which has fewer inputs than the amount being controlled. In some practical applications, uneven weight and f-loads on the hook can lead to load and hook oscillations and the bridge crane can develop the so-called double-pendulum properties. This leads to a high degree of coupling and a high degree of non-linearity between the various state variables of the crane system. The study that follows suggests a new energy-coupled control strategy for an underactuated double-pendulum overhead crane with initial control force constraints. Strong robustness and superior control performance to parameter changes and external disturbances are the proposed controller’s noticeable characteristics. To ensure the smooth start of the trolley, a robust control adds the hyperbolic tangent function to the control procedure. In addition, the stability analysis and stability verification of the control system is given by using the LaSalle’s invariance principle and Lyapunov techniques. The simulation results show that the new energy coupling control method has stability and strong robustness under various conditions such as different rope lengths, load quality, target position and external disturbance when the initial control force decreases.
{"title":"Robust Control Method Design for Underactuated Double-Pendulum Overhead Cranes","authors":"T. Zhang","doi":"10.56397/ist.2023.05.02","DOIUrl":"https://doi.org/10.56397/ist.2023.05.02","url":null,"abstract":"Overhead travelling cranes are infrastructure for building construction and their main purpose is to ensure accurate and rapid transport of goods to a given location in the shortest possible time without any residual oscillation. The overhead crane is also a typical underdrive method, which has fewer inputs than the amount being controlled. In some practical applications, uneven weight and f-loads on the hook can lead to load and hook oscillations and the bridge crane can develop the so-called double-pendulum properties. This leads to a high degree of coupling and a high degree of non-linearity between the various state variables of the crane system. The study that follows suggests a new energy-coupled control strategy for an underactuated double-pendulum overhead crane with initial control force constraints. Strong robustness and superior control performance to parameter changes and external disturbances are the proposed controller’s noticeable characteristics. To ensure the smooth start of the trolley, a robust control adds the hyperbolic tangent function to the control procedure. In addition, the stability analysis and stability verification of the control system is given by using the LaSalle’s invariance principle and Lyapunov techniques. The simulation results show that the new energy coupling control method has stability and strong robustness under various conditions such as different rope lengths, load quality, target position and external disturbance when the initial control force decreases.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76952019","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}
Proper measure of ideal body weight (IBW) is necessary in medical science. According to physicians, IBW is related to the lowest morbidity and mortality. Broca Index (BI) is a simple and effective tool to measure IBW; and general physicians, nutritionists, and Life Insurance Companies can use it confidently. In this mini review aspects of Broca Index (BI) are discussed for the calculation of ideal body weight (IBW) of health conscious people.
{"title":"Broca Index: A Simple Tool to Measure Ideal Body Weight","authors":"Devajit Mohajan, H. Mohajan","doi":"10.56397/ist.2023.03.04","DOIUrl":"https://doi.org/10.56397/ist.2023.03.04","url":null,"abstract":"Proper measure of ideal body weight (IBW) is necessary in medical science. According to physicians, IBW is related to the lowest morbidity and mortality. Broca Index (BI) is a simple and effective tool to measure IBW; and general physicians, nutritionists, and Life Insurance Companies can use it confidently. In this mini review aspects of Broca Index (BI) are discussed for the calculation of ideal body weight (IBW) of health conscious people.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77652398","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 a recent paper published in the Annales de la Fondation Louis de Brogle. G.D’Abramo analyses several aspects of special relativity, including the well-known relativistic muon experiments. In the abstract, mr. D’Abramo states that: “We shall do that by providing a reanalysis of the so-called Andromeda paradox and by revisiting the standard explanation of the muon lifetime dilation given when this phenomenon is observed from muon’s perspective”. In the following note we will expose a basic misunderstanding in mr. D’Abramo when it comes to the explanations of the muon lifetime and to Andromeda paradox.
{"title":"Rebuttal to G.D’Abramo Paper “Astronomical Distances and Velocities and Special Relativity”","authors":"A. Sfarti","doi":"10.56397/ist.2023.03.03","DOIUrl":"https://doi.org/10.56397/ist.2023.03.03","url":null,"abstract":"In a recent paper published in the Annales de la Fondation Louis de Brogle. G.D’Abramo analyses several aspects of special relativity, including the well-known relativistic muon experiments. In the abstract, mr. D’Abramo states that: “We shall do that by providing a reanalysis of the so-called Andromeda paradox and by revisiting the standard explanation of the muon lifetime dilation given when this phenomenon is observed from muon’s perspective”. In the following note we will expose a basic misunderstanding in mr. D’Abramo when it comes to the explanations of the muon lifetime and to Andromeda paradox.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76761364","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}
This study tries to discuss maximum oxygen consumption (V̇O2max) strategy and its importance to build up a healthy society worldwide. V̇O2max is an important predictive factor of cardiovascular health, morbidity, and all-cause mortality; and consider it as the gold standard measure of cardiorespiratory fitness. Regular and long-time physical exercise, and exercise training are effective means of increasing V̇O2max. This research aims to increase V̇O2max and endurance capacity through the prolonged strenuous exercise, hardworking, and exercise training.
{"title":"Long-Term Regular Exercise Increases V̇O2max for Cardiorespiratory Fitness","authors":"Devajit Mohajan, H. Mohajan","doi":"10.56397/ist.2023.03.07","DOIUrl":"https://doi.org/10.56397/ist.2023.03.07","url":null,"abstract":"This study tries to discuss maximum oxygen consumption (V̇O2max) strategy and its importance to build up a healthy society worldwide. V̇O2max is an important predictive factor of cardiovascular health, morbidity, and all-cause mortality; and consider it as the gold standard measure of cardiorespiratory fitness. Regular and long-time physical exercise, and exercise training are effective means of increasing V̇O2max. This research aims to increase V̇O2max and endurance capacity through the prolonged strenuous exercise, hardworking, and exercise training.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73397707","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}
Pyrolysis is an irreversible thermochemical treatment process of materials at elevated temperatures in an inert atmosphere. Pyrolysis is used heavily in the chemical industry to produce many forms of carbon and other chemicals from petroleum, coal, wood, oil shale, biomass or organic waste materials, and it is the basis of several methods for producing fuel from biomass. The end products of pyrolysis include solid residual coproducts and ash, noncondensable gases and condensable liquids. These products can be controlled by optimizing pyrolysis parameters such as temperature and residence time.
{"title":"Pyrolysis in the Chemical Industry and Its Major Industrial Applications","authors":"Hassan Al-haj Ibrahim","doi":"10.56397/ist.2023.03.01","DOIUrl":"https://doi.org/10.56397/ist.2023.03.01","url":null,"abstract":"Pyrolysis is an irreversible thermochemical treatment process of materials at elevated temperatures in an inert atmosphere. Pyrolysis is used heavily in the chemical industry to produce many forms of carbon and other chemicals from petroleum, coal, wood, oil shale, biomass or organic waste materials, and it is the basis of several methods for producing fuel from biomass. The end products of pyrolysis include solid residual coproducts and ash, noncondensable gases and condensable liquids. These products can be controlled by optimizing pyrolysis parameters such as temperature and residence time.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72670445","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}
Aims: Improving energy efficiency and creating the quality of the indoor environment in buildings by using environmentally friendly energy sources instead of using fossil fuels that are impossible to recycle and cause environmental pollution is very important. The use of an algal facade system that generates energy sources through building components can be suggested as one of the new efficient alternatives to solve this system. Methods: Microalgae are a type of living microorganism that is in the simplest form of a plant sample and mainly single-celled. Compared to other plant species, these organisms have a very high ability to absorb air pollution due to the high surface-to-volume ratio. By absorbing carbon dioxide from air or water during photosynthesis, they produce about 60 to 75 percent of the oxygen needed by humans and animals, which is 10 times more than a mature tree and photosynthetic grass. Findings: In this research, in the first stage, based on valid scientific articles and library studies, new information is collected and produced, and then the behaviour of microalgae bioreactors is investigated and the possibility of replacing old panels with bioreactors is investigated. Conclusion: The use of alternative energy due to the reduction of energy resources and no destruction of the environment, and the use of environmentally friendly energy using microalgae, in addition to producing the required oxygen, by adding bioreactor panels as an additional view the building has been designed to create privacy and proper view of the building facade.
{"title":"To Reduce the Annoying Light with Microalgae Window","authors":"Nafiseh Mohammadivahidi","doi":"10.56397/ist.2023.03.02","DOIUrl":"https://doi.org/10.56397/ist.2023.03.02","url":null,"abstract":"Aims: Improving energy efficiency and creating the quality of the indoor environment in buildings by using environmentally friendly energy sources instead of using fossil fuels that are impossible to recycle and cause environmental pollution is very important. The use of an algal facade system that generates energy sources through building components can be suggested as one of the new efficient alternatives to solve this system. Methods: Microalgae are a type of living microorganism that is in the simplest form of a plant sample and mainly single-celled. Compared to other plant species, these organisms have a very high ability to absorb air pollution due to the high surface-to-volume ratio. By absorbing carbon dioxide from air or water during photosynthesis, they produce about 60 to 75 percent of the oxygen needed by humans and animals, which is 10 times more than a mature tree and photosynthetic grass. Findings: In this research, in the first stage, based on valid scientific articles and library studies, new information is collected and produced, and then the behaviour of microalgae bioreactors is investigated and the possibility of replacing old panels with bioreactors is investigated. Conclusion: The use of alternative energy due to the reduction of energy resources and no destruction of the environment, and the use of environmentally friendly energy using microalgae, in addition to producing the required oxygen, by adding bioreactor panels as an additional view the building has been designed to create privacy and proper view of the building facade.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85850258","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}
Babkir A Ibrahim, E. M. Eldey, A. A. Ishag, Ahmed M. El Naim
Agriculture is an important sector of Sudan economy and is the backbone of growth, poverty reduction, and sustainable development. Sunflower has become an important crop for both farmers and consumers in Sudan, fits well in the local cropping system and is considered the most important cash crop of the country. The experiment was conducted in the Experimental Farm, University of Kassala (New Halfa) of Sudan, to investigate the influence of cultivars and planting Spacing on plant growth and yield of Sunflower (Helianthus annuus L). It consisted of two cultivars (pannar-735 and Damazin-1) and three plant spacing’s (10 cm, 20 cm and 30 cm). Treatments were arranged in a factorial randomized complete block design (RCBD), in three replications. The results revealed, the cultivar, pannar- 735, early flowering, significantly highest hundred seed weight, seeds number per disc, seed yield (g/plant) and final yield (3.00 ton/ha). The Intra-row spacing of 30 cm had a thicker stem diameter, a highest number of seeds per head, 100-seed weight, seed yield per plant and final seed yield (3.34 ton/ha). The study revealed that the sunflower hybrid pannar-735 and plant spacing 30 cm apart is the best for New Halfa Eastern of Sudan.
农业是苏丹经济的重要组成部分，是经济增长、减贫和可持续发展的支柱。向日葵已成为苏丹农民和消费者的重要作物，非常适合当地的种植制度，被认为是该国最重要的经济作物。本试验在苏丹卡萨拉大学(New Halfa)实验农场为研究品种和种植间距对向日葵(Helianthus annuus L)植株生长和产量的影响，采用2个品种(pannar-735和Damazin-1)和3个种植间距(10 cm、20 cm和30 cm)。处理采用全因子随机区组设计(RCBD)，分为3个重复。结果表明，pannar- 735早熟，百粒重、单盘种子数、产量(g/株)和最终产量(3.00 t /ha)均显著高于其他品种。行距为30 cm时，茎粗粗、单穗种子数、百粒重、单株种子产量和最终种子产量(3.34 t /ha)最高。研究表明，在苏丹东部新哈法地区，向日葵杂交种pannar-735株距为30 cm时最适宜。
{"title":"Response of Sunflower (Helianthus Annuus L) to Plant Spacing","authors":"Babkir A Ibrahim, E. M. Eldey, A. A. Ishag, Ahmed M. El Naim","doi":"10.56397/ist.2023.03.06","DOIUrl":"https://doi.org/10.56397/ist.2023.03.06","url":null,"abstract":"Agriculture is an important sector of Sudan economy and is the backbone of growth, poverty reduction, and sustainable development. Sunflower has become an important crop for both farmers and consumers in Sudan, fits well in the local cropping system and is considered the most important cash crop of the country. The experiment was conducted in the Experimental Farm, University of Kassala (New Halfa) of Sudan, to investigate the influence of cultivars and planting Spacing on plant growth and yield of Sunflower (Helianthus annuus L). It consisted of two cultivars (pannar-735 and Damazin-1) and three plant spacing’s (10 cm, 20 cm and 30 cm). Treatments were arranged in a factorial randomized complete block design (RCBD), in three replications. The results revealed, the cultivar, pannar- 735, early flowering, significantly highest hundred seed weight, seeds number per disc, seed yield (g/plant) and final yield (3.00 ton/ha). The Intra-row spacing of 30 cm had a thicker stem diameter, a highest number of seeds per head, 100-seed weight, seed yield per plant and final seed yield (3.34 ton/ha). The study revealed that the sunflower hybrid pannar-735 and plant spacing 30 cm apart is the best for New Halfa Eastern of Sudan.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82897186","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}
Hongtao Tang, Daoxian Tong, Xiang Zhang, Honglin Chen, N. Zhou
The dynamic meshing technology in computational fluid dynamics (CFD) is used to simulate the transient overtaking process of right turning vehicles and straight running vehicles. The characteristic of flow field around the vehicle model and the variation trend of lateral force and yawing moment are obtained. The research shows that when the speed of the straight vehicle increases, its lateral force and the yawing moment of both vehicles increase, while the lateral force of the right turning vehicle increases first and then decreases; The turning radius of the right turning vehicle increases, the lateral force of the two vehicles and the yawing moment of the straight vehicle decrease linearly, and the yawing moment of the right turning vehicle increases linearly.
{"title":"Study on Aerodynamic Characteristics Between Right Turning Vehicles and Straight Running Vehicles","authors":"Hongtao Tang, Daoxian Tong, Xiang Zhang, Honglin Chen, N. Zhou","doi":"10.56397/ist.2023.03.05","DOIUrl":"https://doi.org/10.56397/ist.2023.03.05","url":null,"abstract":"The dynamic meshing technology in computational fluid dynamics (CFD) is used to simulate the transient overtaking process of right turning vehicles and straight running vehicles. The characteristic of flow field around the vehicle model and the variation trend of lateral force and yawing moment are obtained. The research shows that when the speed of the straight vehicle increases, its lateral force and the yawing moment of both vehicles increase, while the lateral force of the right turning vehicle increases first and then decreases; The turning radius of the right turning vehicle increases, the lateral force of the two vehicles and the yawing moment of the straight vehicle decrease linearly, and the yawing moment of the right turning vehicle increases linearly.","PeriodicalId":20688,"journal":{"name":"Proceedings of The 6th International Conference on Innovation in Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90942123","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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