Pub Date : 2023-02-23DOI: 10.34257/gjrejvol23is1pg1
Md. Imran Hosen, Jaglul Hoque Mridha, Masum Musfiq, Md. Shahin Hossen, M. R. Uddin, Md. Sakib Uz-Zaman, Shoaib Mahmud, Arif Hossain
This paper contains a production and inventory planning model with lot sizing in an RMG factory. This model is an example of mixed integer linear programming. The primary goal of this approach, which combines the make-to-order (MTO) and make-to-stock (MTS) production methods are to simultaneously satisfy existing customer orders and new customer orders in order to reduce the total cost. Here, make-to-order (MTO) and make-to-stock (MTS) production systems are becoming more and more common since they allow businesses to increase revenues while managing expenses by maintaining a positive cash flow. For mixed contexts where demand is cyclical but predictable, and the model stores the predicted data and fresh forthcoming orders.
{"title":"Optimization of Total Cost of Production for a Mixed Make-To-Order (MTO) and Make-To-Stock (MTS) Production System with Lot Sizing for the RMG Industry in Bangladesh","authors":"Md. Imran Hosen, Jaglul Hoque Mridha, Masum Musfiq, Md. Shahin Hossen, M. R. Uddin, Md. Sakib Uz-Zaman, Shoaib Mahmud, Arif Hossain","doi":"10.34257/gjrejvol23is1pg1","DOIUrl":"https://doi.org/10.34257/gjrejvol23is1pg1","url":null,"abstract":"This paper contains a production and inventory planning model with lot sizing in an RMG factory. This model is an example of mixed integer linear programming. The primary goal of this approach, which combines the make-to-order (MTO) and make-to-stock (MTS) production methods are to simultaneously satisfy existing customer orders and new customer orders in order to reduce the total cost. Here, make-to-order (MTO) and make-to-stock (MTS) production systems are becoming more and more common since they allow businesses to increase revenues while managing expenses by maintaining a positive cash flow. For mixed contexts where demand is cyclical but predictable, and the model stores the predicted data and fresh forthcoming orders.","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124911094","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 : 2023-02-23DOI: 10.34257/gjrejvol23is1pg33
Dmitriy Shatokhin
The design of new cryptographic algorithms, as a rule, has the main goal of improving their resistance to cryptanalysis methods. Since cryptanalysis methods are constantly being improved, when designing crypto algorithms, it becomes necessary to create new non-standard approaches that can effectively resist the existing cryptanalysis methods. This paper describes in detail a new crypto algorithm created using an original technique aimed at radically improving cryptographic strength. The paper provides both brief theoretical justifications and a complete technical description of the crypto algorithm.
{"title":"New Encryption Algorithm with Improved Security","authors":"Dmitriy Shatokhin","doi":"10.34257/gjrejvol23is1pg33","DOIUrl":"https://doi.org/10.34257/gjrejvol23is1pg33","url":null,"abstract":"The design of new cryptographic algorithms, as a rule, has the main goal of improving their resistance to cryptanalysis methods. Since cryptanalysis methods are constantly being improved, when designing crypto algorithms, it becomes necessary to create new non-standard approaches that can effectively resist the existing cryptanalysis methods. This paper describes in detail a new crypto algorithm created using an original technique aimed at radically improving cryptographic strength. The paper provides both brief theoretical justifications and a complete technical description of the crypto algorithm.","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128419712","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 : 2022-11-15DOI: 10.34257/gjreevol22is2pg1
Mahantesh N. B., S. A. R., Bharath Kumar K.
The cost ratio of steel to concrete exceeding 100 in most of the RCC structures, alternative materials for replacing steel are underway to develop a sustainable built environment. Bamboo has been in housing industry since time memorial as a standalone structural member for lighter loads of roofing and wall cladding units. It has been tested for its use as reinforcement in OPC based cement concrete structures replacing steel reinforcement with appreciable performance while requiring serious attention on serviceability and durational aspects. The alkali activated low calcium fly ash & slag-based concrete with steel reinforcement as structural components cured at ambient temperature (RGPC) are being popularized in the most consumed sector of concrete construction industry.
{"title":"Steel Wire Wrapped Bamboo – As a Sustainable Reinforcement in Alkali Activated Fly Ash-Slag based Concrete","authors":"Mahantesh N. B., S. A. R., Bharath Kumar K.","doi":"10.34257/gjreevol22is2pg1","DOIUrl":"https://doi.org/10.34257/gjreevol22is2pg1","url":null,"abstract":"The cost ratio of steel to concrete exceeding 100 in most of the RCC structures, alternative materials for replacing steel are underway to develop a sustainable built environment. Bamboo has been in housing industry since time memorial as a standalone structural member for lighter loads of roofing and wall cladding units. It has been tested for its use as reinforcement in OPC based cement concrete structures replacing steel reinforcement with appreciable performance while requiring serious attention on serviceability and durational aspects. The alkali activated low calcium fly ash & slag-based concrete with steel reinforcement as structural components cured at ambient temperature (RGPC) are being popularized in the most consumed sector of concrete construction industry.","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131920043","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 : 2022-11-15DOI: 10.34257/gjreevol22is2pg13
G. Younis
The legislation and laws related to protection against the natural environment aim to achieve a balance between what is taken from the natural environment and what can be achieved to protect it by the contemporary ideas of the international organizations of Earth Day and environmental protection organizations. That legislation has directed reflections on the protections against urban and architectural environments that are achieved by activating the role of the institutions under the names of environmental protection to adopt basic legislation for protecting the urban and architectural environment. The general problem of research is to determine the shortcomings of the environmental dimensions of Iraqi legislation, laws, and instructions, and the reality of the control system in the light of the renewable mechanisms in this area. The research aimed to assess the status of the local legislative system through a practical study to identify the category of specialists that are directly involved in the system (The planners, engineers, and designers).
{"title":"The Environmental Dimensions of Iraqi Urban Legislation and Laws they Specialize in Environmental Protection Legislation","authors":"G. Younis","doi":"10.34257/gjreevol22is2pg13","DOIUrl":"https://doi.org/10.34257/gjreevol22is2pg13","url":null,"abstract":"The legislation and laws related to protection against the natural environment aim to achieve a balance between what is taken from the natural environment and what can be achieved to protect it by the contemporary ideas of the international organizations of Earth Day and environmental protection organizations. That legislation has directed reflections on the protections against urban and architectural environments that are achieved by activating the role of the institutions under the names of environmental protection to adopt basic legislation for protecting the urban and architectural environment. The general problem of research is to determine the shortcomings of the environmental dimensions of Iraqi legislation, laws, and instructions, and the reality of the control system in the light of the renewable mechanisms in this area. The research aimed to assess the status of the local legislative system through a practical study to identify the category of specialists that are directly involved in the system (The planners, engineers, and designers).","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134537844","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 : 2022-10-10DOI: 10.34257/gjrefvol22is3pg1
Daniel L. Stevens
Low probability of intercept radar signals, which are may times difficult to detect and characterize, have as their goal ‘to see but not be seen’. Digital intercept receivers are currently moving away from Fourier-based techniques and toward classical time-frequency techniques for analyzing low probability of intercept radar signals. This paper brings forth the unique approach of both detecting and characterizing low probability of intercept frequency hopping radar signals by employing and comparing the Wigner-Ville Distribution and the Reassigned Smoothed Pseudo Wigner-Ville Distribution. Four-component frequency hopping low probability of intercept radar signals were analyzed. The following metrics were used for evaluation: percent error of: carrier frequency, modulation bandwidth, modulation period, and time-frequency localization. Also used were: percent detection, lowest signal-to-noise ratio for signal detection, and relative processing time.
{"title":"A Unique Method for Detecting and Characterizing Low Probability of Intercept Frequency Hopping Radar Signals by means of the Wigner-Ville Distribution and the Reassigned Smoothed Pseudo Wigner-Ville Distribution","authors":"Daniel L. Stevens","doi":"10.34257/gjrefvol22is3pg1","DOIUrl":"https://doi.org/10.34257/gjrefvol22is3pg1","url":null,"abstract":"Low probability of intercept radar signals, which are may times difficult to detect and characterize, have as their goal ‘to see but not be seen’. Digital intercept receivers are currently moving away from Fourier-based techniques and toward classical time-frequency techniques for analyzing low probability of intercept radar signals. This paper brings forth the unique approach of both detecting and characterizing low probability of intercept frequency hopping radar signals by employing and comparing the Wigner-Ville Distribution and the Reassigned Smoothed Pseudo Wigner-Ville Distribution. Four-component frequency hopping low probability of intercept radar signals were analyzed. The following metrics were used for evaluation: percent error of: carrier frequency, modulation bandwidth, modulation period, and time-frequency localization. Also used were: percent detection, lowest signal-to-noise ratio for signal detection, and relative processing time.","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125392218","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 : 2022-08-30DOI: 10.34257/gjreavol22is2pg1
E. Adiutori
Conventional engineering laws are irrational for three reasons: When the laws are applied to nonlinear behavior, they have three variables to describe how two variables are related; they are founded on Fourier’s erroneous claims that dimensions can rationally be assigned to numbers, and dimensions can rationally be multiplied or divided. Until now, it has been globally accepted that parameter symbols in rational equations represent numerical value and dimension. The proposed paradigm shift requires that parameter symbols in equations represent only numerical value, and if an equation is quantitative, the dimension units that underlie parameter symbols must be specified in an accompanying nomenclature. The proposed paradigm shift results in laws and equations that are dimensionally homogeneous because they are dimensionless. The new laws are analogs of y = f{x}.The new laws state that the numerical value of parameter y is a function of the numerical value of parameter x, and the function may be proportional, linear, or nonlinear. The new laws are rational because they always have only two variables, they do not require that dimensions be assigned to numbers, and they do not require that parameter dimensions be multiplied or divided.
{"title":"Why Conventional Engineering Laws are Irrational, and a Paradigm Shift that Results in Rational Laws","authors":"E. Adiutori","doi":"10.34257/gjreavol22is2pg1","DOIUrl":"https://doi.org/10.34257/gjreavol22is2pg1","url":null,"abstract":"Conventional engineering laws are irrational for three reasons: When the laws are applied to nonlinear behavior, they have three variables to describe how two variables are related; they are founded on Fourier’s erroneous claims that dimensions can rationally be assigned to numbers, and dimensions can rationally be multiplied or divided. Until now, it has been globally accepted that parameter symbols in rational equations represent numerical value and dimension. The proposed paradigm shift requires that parameter symbols in equations represent only numerical value, and if an equation is quantitative, the dimension units that underlie parameter symbols must be specified in an accompanying nomenclature. The proposed paradigm shift results in laws and equations that are dimensionally homogeneous because they are dimensionless. The new laws are analogs of y = f{x}.The new laws state that the numerical value of parameter y is a function of the numerical value of parameter x, and the function may be proportional, linear, or nonlinear. The new laws are rational because they always have only two variables, they do not require that dimensions be assigned to numbers, and they do not require that parameter dimensions be multiplied or divided.","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114385322","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 : 2022-08-30DOI: 10.34257/gjreavol22is2pg7
Swadesh Suman, S. Gaikwad
This work investigates the effect of different parameters of a static wavy flag vortex generator on the heat transfer in a rectangular channel using Computational Fluid Dynamics (CFD) analysis. This work encompasses optimizing several parameters of a flag such as flag height from the surface, position in the channel, number of triangular shapes in a flag, and rectangular surface area of the flag. Post analysis results exhibit encouraging results with average Nusselt number in flag height (FH) optimization exceeding that in no flag condition by 41.84%, 47.79%, 54.68% for Re 8236, 12354, and 18344, respectively whereas further position optimization of FH optimized flag exceeds average Nusselt number in no flag condition by 46.86%, 70.68% and 87.26% for the corresponding Re. With significantly less practical application of flags for heat transfer enhancement in industry, this work aims to establish flags as an effective heat transfer enhancement device and demonstrate that with the right optimized parameters, a significant increase of heat transfer in the channel can be achieved.
{"title":"Numerical Analysis and Parametric Optimization of a Static Wavy Flag for Heat Transfer Enhancement","authors":"Swadesh Suman, S. Gaikwad","doi":"10.34257/gjreavol22is2pg7","DOIUrl":"https://doi.org/10.34257/gjreavol22is2pg7","url":null,"abstract":"This work investigates the effect of different parameters of a static wavy flag vortex generator on the heat transfer in a rectangular channel using Computational Fluid Dynamics (CFD) analysis. This work encompasses optimizing several parameters of a flag such as flag height from the surface, position in the channel, number of triangular shapes in a flag, and rectangular surface area of the flag. Post analysis results exhibit encouraging results with average Nusselt number in flag height (FH) optimization exceeding that in no flag condition by 41.84%, 47.79%, 54.68% for Re 8236, 12354, and 18344, respectively whereas further position optimization of FH optimized flag exceeds average Nusselt number in no flag condition by 46.86%, 70.68% and 87.26% for the corresponding Re. With significantly less practical application of flags for heat transfer enhancement in industry, this work aims to establish flags as an effective heat transfer enhancement device and demonstrate that with the right optimized parameters, a significant increase of heat transfer in the channel can be achieved.","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114210566","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 : 2022-08-30DOI: 10.34257/gjreavol22is2pg27
Alessandro Luchetti, M. Cecco, Matteo Perotto, P. Bosetti, D. Fontanelli, L. Palopoli, Fabiano Zenatti, Matteo Zanetti, Luca Maule, Mattia Tavernini
The goal of this work is to present an innovative design for a smart robotic gripper, which is able to grasp different randomly deployed prismatic and cylindrical packages and orient them through a mechanically passive alignment system with sensing capability. It consists in a new concept of end-effector combined with an ad-hoc path planning for aligning residual worst cases. The system uses gravity and an angular sensor embedded into the gripper to detect the object orientation and, if necessary, formulate a control strategy to align it before the release phase. An initial screening experiment was executed to find the parameters that most influence the alignment angle and execution time. Two worst-case pack ages were tested in different working conditions. The results show that the percentage of success of the system is high even in the worst operating conditions.
{"title":"Passive Sensing Jaw for Grasping and Orienting","authors":"Alessandro Luchetti, M. Cecco, Matteo Perotto, P. Bosetti, D. Fontanelli, L. Palopoli, Fabiano Zenatti, Matteo Zanetti, Luca Maule, Mattia Tavernini","doi":"10.34257/gjreavol22is2pg27","DOIUrl":"https://doi.org/10.34257/gjreavol22is2pg27","url":null,"abstract":"The goal of this work is to present an innovative design for a smart robotic gripper, which is able to grasp different randomly deployed prismatic and cylindrical packages and orient them through a mechanically passive alignment system with sensing capability. It consists in a new concept of end-effector combined with an ad-hoc path planning for aligning residual worst cases. The system uses gravity and an angular sensor embedded into the gripper to detect the object orientation and, if necessary, formulate a control strategy to align it before the release phase. An initial screening experiment was executed to find the parameters that most influence the alignment angle and execution time. Two worst-case pack ages were tested in different working conditions. The results show that the percentage of success of the system is high even in the worst operating conditions.","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122783089","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 : 2022-07-19DOI: 10.34257/gjreevol22is1pg45
Arpan K. Sharma, Parikshit Thakur, Rajneesh Vashisht, Abhilash Shukla
Classification of concrete is often most feasible means for measuring the durability and has become progressively over the past 20 years. The present study is focused on the capability of concrete to improve its durability when the concrete is subjected to the highly aggressive environments. Existing concrete in cold or coastal regions are affected by chloride penetration under the freeze-thaw cycles. This collective deterioration process quickens the damage advancement of concrete and reduces the service life of the structures. In real life the structure may face numerous deterioration contrivances due to environmental factors surrounded by the concrete. A variety of laboratory test method were used for the determination of durability, which provide number of results, such as rapid chloride penetration value, electrical conductivity, water absorption rate in concrete. For evaluating the durability of concrete, to a single contrivance of deterioration, the techniques were economical and appropriate. For determining the durability of concrete the Ordinary Portland Cement was used.
{"title":"Durability Evaluation of Normal and High Performance Concrete","authors":"Arpan K. Sharma, Parikshit Thakur, Rajneesh Vashisht, Abhilash Shukla","doi":"10.34257/gjreevol22is1pg45","DOIUrl":"https://doi.org/10.34257/gjreevol22is1pg45","url":null,"abstract":"Classification of concrete is often most feasible means for measuring the durability and has become progressively over the past 20 years. The present study is focused on the capability of concrete to improve its durability when the concrete is subjected to the highly aggressive environments. Existing concrete in cold or coastal regions are affected by chloride penetration under the freeze-thaw cycles. This collective deterioration process quickens the damage advancement of concrete and reduces the service life of the structures. In real life the structure may face numerous deterioration contrivances due to environmental factors surrounded by the concrete. A variety of laboratory test method were used for the determination of durability, which provide number of results, such as rapid chloride penetration value, electrical conductivity, water absorption rate in concrete. For evaluating the durability of concrete, to a single contrivance of deterioration, the techniques were economical and appropriate. For determining the durability of concrete the Ordinary Portland Cement was used.","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124556711","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 : 2022-07-06DOI: 10.34257/gjrebvol22is1pg1
Pedro J. Llano, Morgan Shilling, K. Andrijauskaite, Kody Kidder, V. Duraisamy
The research team at ERAU and UTHSCSA analyzed the effects of suborbital flight stressors and various light conditions (red, white, no light) on the Arthrospira platensis (Spirulina), onboard Blue Origin’s New Shepard vehicle. Commercially available cyanobacterium species were cultivated and closely monitored in mother colonies several months before the suborbital flight mission. The aim of this study was to estimate the biomass production and growth as a potential dietary alternative for prospective human spaceflight's life support system. Spirulina samples were flown in a NanoLab with adjacent avionics supporting the light conditions and sensors to monitor the temperature, relative humidity, and accelerations. The various flight parameters measured in the NanoLab were validated with the flight data gathered by Nanoracks, the flight integrator. Thus, we also assessed the effect of microgravity and different light conditions on the gene expression. Our data indicates that the Spirulina samples onboard the rocket had significant (p < 0.01-0.0001) downregulation of majority of the gene expression.
{"title":"Assessment of Scientific Payload Carrying Spirulina Onboard Blue Origin’s New Shepard Vehicle","authors":"Pedro J. Llano, Morgan Shilling, K. Andrijauskaite, Kody Kidder, V. Duraisamy","doi":"10.34257/gjrebvol22is1pg1","DOIUrl":"https://doi.org/10.34257/gjrebvol22is1pg1","url":null,"abstract":"The research team at ERAU and UTHSCSA analyzed the effects of suborbital flight stressors and various light conditions (red, white, no light) on the Arthrospira platensis (Spirulina), onboard Blue Origin’s New Shepard vehicle. Commercially available cyanobacterium species were cultivated and closely monitored in mother colonies several months before the suborbital flight mission. The aim of this study was to estimate the biomass production and growth as a potential dietary alternative for prospective human spaceflight's life support system. Spirulina samples were flown in a NanoLab with adjacent avionics supporting the light conditions and sensors to monitor the temperature, relative humidity, and accelerations. The various flight parameters measured in the NanoLab were validated with the flight data gathered by Nanoracks, the flight integrator. Thus, we also assessed the effect of microgravity and different light conditions on the gene expression. Our data indicates that the Spirulina samples onboard the rocket had significant (p < 0.01-0.0001) downregulation of majority of the gene expression.","PeriodicalId":342934,"journal":{"name":"Global Journal of Researches in Engineering","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124592509","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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