Pub Date : 2023-05-26DOI: 10.55766/sujst-2023-02-e01872
Naiyar Iqbal, P. Kumar
Computational prediction of diseases is vital in medical research that contributes to computer-aided diagnostics and helps doctors and medical practitioners in critical decision-making for various diseases such as bacterial and viral kinds of disease, including COVID-19 of the current pandemic situation. Feature selection techniques function as a preprocessing phase for classification and prediction algorithms. For disease prediction, these features may be the patient’s clinical profiles or genomic features such as gene expression profiles from microarray and read counts from RNA-Seq. The performance of a classifier depends primarily on the selected features. In addition, genomic features are too large in numbers, resulting in the curse of dimensionality problem. In the last few years, several feature selection algorithms have been developed to overcome the existing problems to get rid of eliminating chronic diseases, such as various cancers, Zika virus, Ebola virus, and the COVID-19 pandemic. In this review article, we systematically associate soft computing-based approaches for feature selection and disease prediction by applying three data types: patients’ clinical profiles, microarray gene expression profiles, and RNA-Seq sample profiles. According to related work, when the discussion took place, the percentage of medical data types highlighted through pictorial representation and the respective ratio of percentages mentioned were 52%, 27%, 9% and 12% for clinical symptoms, gene expression, MRI-Image and other data types such as signal or text-based utilized, respectively. We also highlight the significant challenges and future directions in this research domain.
{"title":"RECENT DEVELOPMENTS IN SOFT COMPUTING BASED TECHNIQUES FOR FEATURE SELECTION AND DISEASE CLASSIFICATION","authors":"Naiyar Iqbal, P. Kumar","doi":"10.55766/sujst-2023-02-e01872","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01872","url":null,"abstract":"Computational prediction of diseases is vital in medical research that contributes to computer-aided diagnostics and helps doctors and medical practitioners in critical decision-making for various diseases such as bacterial and viral kinds of disease, including COVID-19 of the current pandemic situation. Feature selection techniques function as a preprocessing phase for classification and prediction algorithms. For disease prediction, these features may be the patient’s clinical profiles or genomic features such as gene expression profiles from microarray and read counts from RNA-Seq. The performance of a classifier depends primarily on the selected features. In addition, genomic features are too large in numbers, resulting in the curse of dimensionality problem. In the last few years, several feature selection algorithms have been developed to overcome the existing problems to get rid of eliminating chronic diseases, such as various cancers, Zika virus, Ebola virus, and the COVID-19 pandemic. In this review article, we systematically associate soft computing-based approaches for feature selection and disease prediction by applying three data types: patients’ clinical profiles, microarray gene expression profiles, and RNA-Seq sample profiles. According to related work, when the discussion took place, the percentage of medical data types highlighted through pictorial representation and the respective ratio of percentages mentioned were 52%, 27%, 9% and 12% for clinical symptoms, gene expression, MRI-Image and other data types such as signal or text-based utilized, respectively. We also highlight the significant challenges and future directions in this research domain. \u0000 ","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"4 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85335788","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 : 2023-05-26DOI: 10.55766/sujst-2023-02-e01585
P. Porjai, C. Wattanawikkam, Atipong Bootchanont, Naris Barnthip, S. Pavasupree, Pinit Jitjing, D. Boonyawan, Keandtisak Kachayut
The degradation of methylene blue (MB) using air atmospheric pressure plasma jet (air APPJ) in contact with liquid was proposed. In this study, an AC-driven air APPJ using three discharge duty cycles (30%, 50%, and 80%) of a neon transformer was investigated. In each discharge duty cycle, the ignition and extinguishment phases were characterized. The constituent particles of the air APPJ in the gas phase were observed by an optical emission spectrophotometer (OES). The OES results of all discharge duty cycles found the NO (A-X) bands, •OH radical, N2 second positive system, N2 first negative system, N+, N, and O. The emission spectra produced by the discharge duty cycle of 80% were the highest relative intensity. The effects of the different discharge duty cycles on the acidity and conductivity of water with and without MB were also determined. The complete dye degradation within 30 min was obtained in the discharge duty cycle 80%, which played an essential role in carrying reactive species from the gas phase to the liquid phase, thus promoting the degradation of MB. The best reaction kinetic rate k is 0.1692 min-1, which is six times compared to discharge duty cycle 50%.
{"title":"DISCHARGE DUTY CYCLES EFFECTS OF 20 KHZ AIR ATMOSPHERIC PRESSURE PLASMA JET ON METHYLENE BLUE SOLUTION DEGRADATION","authors":"P. Porjai, C. Wattanawikkam, Atipong Bootchanont, Naris Barnthip, S. Pavasupree, Pinit Jitjing, D. Boonyawan, Keandtisak Kachayut","doi":"10.55766/sujst-2023-02-e01585","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01585","url":null,"abstract":"The degradation of methylene blue (MB) using air atmospheric pressure plasma jet (air APPJ) in contact with liquid was proposed. In this study, an AC-driven air APPJ using three discharge duty cycles (30%, 50%, and 80%) of a neon transformer was investigated. In each discharge duty cycle, the ignition and extinguishment phases were characterized. The constituent particles of the air APPJ in the gas phase were observed by an optical emission spectrophotometer (OES). The OES results of all discharge duty cycles found the NO (A-X) bands, •OH radical, N2 second positive system, N2 first negative system, N+, N, and O. The emission spectra produced by the discharge duty cycle of 80% were the highest relative intensity. The effects of the different discharge duty cycles on the acidity and conductivity of water with and without MB were also determined. The complete dye degradation within 30 min was obtained in the discharge duty cycle 80%, which played an essential role in carrying reactive species from the gas phase to the liquid phase, thus promoting the degradation of MB. The best reaction kinetic rate k is 0.1692 min-1, which is six times compared to discharge duty cycle 50%.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"93 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86015717","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 : 2023-05-26DOI: 10.55766/sujst-2023-02-e01875
Chettan Rajan Dongarsane, Mahesh Kumar, S. Sankpal
WSN is considered one of the prominent technology due to the different kinds of operations they are involved in. Secured and energy-efficient data routing is very important in the WSN framework. The main aim of this research is to evaluate the performance of a secured and energy-efficient routing protocol named Self Adaptive-Lion Algorithm (SA-LA) in WSN, as well as in WSN assisted IoT framework. This protocol is evaluated by means of different parameters like residual energy, delay, network lifetime, Node Trust Factor (NTF), Interference factor (IF), throughput and security risk probability. Achieved improved outcomes as network lifetime rose up to 14% also risk probability decreased marginally through 18% compared to previous methods.
{"title":"PERFORMANCE EVALUATION OF SA-LA ROUTING PROTOCOL FOR WSN INTEGRATED IOT","authors":"Chettan Rajan Dongarsane, Mahesh Kumar, S. Sankpal","doi":"10.55766/sujst-2023-02-e01875","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01875","url":null,"abstract":"WSN is considered one of the prominent technology due to the different kinds of operations they are involved in. Secured and energy-efficient data routing is very important in the WSN framework. The main aim of this research is to evaluate the performance of a secured and energy-efficient routing protocol named Self Adaptive-Lion Algorithm (SA-LA) in WSN, as well as in WSN assisted IoT framework. This protocol is evaluated by means of different parameters like residual energy, delay, network lifetime, Node Trust Factor (NTF), Interference factor (IF), throughput and security risk probability. Achieved improved outcomes as network lifetime rose up to 14% also risk probability decreased marginally through 18% compared to previous methods.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79833595","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 : 2023-05-26DOI: 10.55766/sujst-2023-02-e01865
Rufaizal Che Mamat, A. Ramli
Peat has a lack of strength, making it unsuitable for foundations or road construction. The results of 104 unconfined compressive strength (UCS) on peat stabilized with various lime percentages are presented in this article. The strength performance of peat soils stabilized with lime in soaked and unsoaked conditions was also evaluated. Evolutionary Polynomial Regression (EPR) models are constructed to predict the UCS values using the data obtained from the tests. After evaluating the various functions, the EPR model with a hyperbolic tangent function is the best model for predicting the UCS. The proposed EPR models may benefit practitioners when determining the optimal amount of stabilizers to utilize in soft-ground improvement projects. In this section, we show and expand on applying the suggested models to the design of soft ground mixing. Additionally, by applying the created relationships to a new instance, the comprehensiveness of the established relationships is shown, as is the practicality of the suggested relationships for usage during the preliminary design stage. The findings of this study have important implications for estimating the quantity of lime required in ground peat improvement work.
{"title":"EVOLUTIONARY POLYNOMIAL REGRESSION FOR PREDICTING THE UNCONFINED COMPRESSIVE STRENGTH OF LIME-STABILIZED","authors":"Rufaizal Che Mamat, A. Ramli","doi":"10.55766/sujst-2023-02-e01865","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01865","url":null,"abstract":"Peat has a lack of strength, making it unsuitable for foundations or road construction. The results of 104 unconfined compressive strength (UCS) on peat stabilized with various lime percentages are presented in this article. The strength performance of peat soils stabilized with lime in soaked and unsoaked conditions was also evaluated. Evolutionary Polynomial Regression (EPR) models are constructed to predict the UCS values using the data obtained from the tests. After evaluating the various functions, the EPR model with a hyperbolic tangent function is the best model for predicting the UCS. The proposed EPR models may benefit practitioners when determining the optimal amount of stabilizers to utilize in soft-ground improvement projects. In this section, we show and expand on applying the suggested models to the design of soft ground mixing. Additionally, by applying the created relationships to a new instance, the comprehensiveness of the established relationships is shown, as is the practicality of the suggested relationships for usage during the preliminary design stage. The findings of this study have important implications for estimating the quantity of lime required in ground peat improvement work.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"405 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76465861","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 : 2023-04-29DOI: 10.55766/sujst-2023-02-e01605
A. Changjan, A. Maksuwan, P. Pramuanl, S. Meakniti, P. Udomsamuthirun
In this paper, two-band Ginzburg-Landau (GL) equations for magnetic superconductors were solved analytically to determine the temperature dependence of surface critical magnetic field (Hc3). By variation method analytically from 1st GL equations and modified to the Changjan & Udomsamuthirun’s temperature dependence model. We found that, our model could find a good agreement with the experimental data of single-crystalline K0.73Fe1.68Se2 superconductors vicinity the critical temperature scenery and the ratio Hc3/Hc2 (where Hc2 is the upper critical field of single-crystalline K0.73Fe1.68Se2) indicated powerful temperature dependence.
{"title":"THE THIRD CRITICAL FIELD (HC3) OF SINGLE-CRYSTALLINE K0.73Fe1.68Se2 BY GINZBURG-LANDAU APPROACH","authors":"A. Changjan, A. Maksuwan, P. Pramuanl, S. Meakniti, P. Udomsamuthirun","doi":"10.55766/sujst-2023-02-e01605","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01605","url":null,"abstract":"In this paper, two-band Ginzburg-Landau (GL) equations for magnetic superconductors were solved analytically to determine the temperature dependence of surface critical magnetic field (Hc3). By variation method analytically from 1st GL equations and modified to the Changjan & Udomsamuthirun’s temperature dependence model. We found that, our model could find a good agreement with the experimental data of single-crystalline K0.73Fe1.68Se2 superconductors vicinity the critical temperature scenery and the ratio Hc3/Hc2 (where Hc2 is the upper critical field of single-crystalline K0.73Fe1.68Se2) indicated powerful temperature dependence.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"60 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85873323","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 : 2023-04-29DOI: 10.55766/sujst-2023-02-e01607
N. Moolsradoo, S. Watanabe
Silicon added diamond-like carbon films fabricated from C2H2:TMS mixture were used to study the influence of silicon content on the deposition and tribological properties of films prepared on Ti-6Al-4V substrate by using plasma-based ion implantation (PBII). The structure of the film was analyzed by Raman spectroscopy. Hardness and elastic modulus of the film were measured by nano-indentation hardness tester. Tribological propertiesof the film were performed by using ball-on-disk friction tester. The results indicate that with the increasing silicon content in the pure DLC film, the friction coefficient increases. The hardness and elastic modulus of Si-DLC film can increase to a value of up to 31.1 GPa and 200.1 GPa with a silicon content of 13.1 at.%. This is because the greater C content. The Si-DLC films with Si content of 13.1 at.% (C:Si/1:2) and 14.3 at.% (C:Si/1:6) shows a low friction coefficient of 0.2, which is considerable improvement in the tribological properties. This is due to the high hardness and elastic modulus.
{"title":"THE INFLUENCE OF SILICON ELEMENT-ADDED DLC FILM ON Ti-6Al-4V","authors":"N. Moolsradoo, S. Watanabe","doi":"10.55766/sujst-2023-02-e01607","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01607","url":null,"abstract":"Silicon added diamond-like carbon films fabricated from C2H2:TMS mixture were used to study the influence of silicon content on the deposition and tribological properties of films prepared on Ti-6Al-4V substrate by using plasma-based ion implantation (PBII). The structure of the film was analyzed by Raman spectroscopy. Hardness and elastic modulus of the film were measured by nano-indentation hardness tester. Tribological propertiesof the film were performed by using ball-on-disk friction tester. The results indicate that with the increasing silicon content in the pure DLC film, the friction coefficient increases. The hardness and elastic modulus of Si-DLC film can increase to a value of up to 31.1 GPa and 200.1 GPa with a silicon content of 13.1 at.%. This is because the greater C content. The Si-DLC films with Si content of 13.1 at.% (C:Si/1:2) and 14.3 at.% (C:Si/1:6) shows a low friction coefficient of 0.2, which is considerable improvement in the tribological properties. This is due to the high hardness and elastic modulus.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"os-24 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87402187","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 : 2023-04-28DOI: 10.55766/sujst-2023-02-e01615
Y. Ruangtaweep, Suebpong Powthai, N. Jarucha, M. Horprathum, R. Rajaramakrishna, J. Kaewkhao
In this work, the glazed ceramic doped with Ho3+ ions were introduced to understand luminescence artwork. The glaze samples were seperated to three conditions consist of raw glaze material (GR), glaze mixing with Ho2O3 before melting (GHo), and glaze mixing with Ho2O3 after melting (GHoM). The samples were analyzed by X-ray fluorescence (XRF), X-ray diffractometry (XRD), scanning electron microscopy (SEM), optical and luminescence spectral properties. The absorption spectra in the visible and near-infrared region were being identified at 361, 419, 453, 486, 539, 646, 900, 1,157, and 1,963 nm. For luminescence spectra, the result showed a strong emission peak at 543 nm via 5F4-5I8 transition of Ho3+ under excitation at 398 nm. Moreover, the SEM images revealed homogeneous dispersion of glazed sample with Ho3+ ions. The glazed ceramic containing Ho3+ ions can be considered as luminescence artwork for ceramic materials.
{"title":"MODIFICATION OF GLAZE FOR LUMINESCENCE ART","authors":"Y. Ruangtaweep, Suebpong Powthai, N. Jarucha, M. Horprathum, R. Rajaramakrishna, J. Kaewkhao","doi":"10.55766/sujst-2023-02-e01615","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01615","url":null,"abstract":"In this work, the glazed ceramic doped with Ho3+ ions were introduced to understand luminescence artwork. The glaze samples were seperated to three conditions consist of raw glaze material (GR), glaze mixing with Ho2O3 before melting (GHo), and glaze mixing with Ho2O3 after melting (GHoM). The samples were analyzed by X-ray fluorescence (XRF), X-ray diffractometry (XRD), scanning electron microscopy (SEM), optical and luminescence spectral properties. The absorption spectra in the visible and near-infrared region were being identified at 361, 419, 453, 486, 539, 646, 900, 1,157, and 1,963 nm. For luminescence spectra, the result showed a strong emission peak at 543 nm via 5F4-5I8 transition of Ho3+ under excitation at 398 nm. Moreover, the SEM images revealed homogeneous dispersion of glazed sample with Ho3+ ions. The glazed ceramic containing Ho3+ ions can be considered as luminescence artwork for ceramic materials.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"13 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91196070","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 : 2023-04-27DOI: 10.55766/sujst-2023-02-e01594
K. Aiempanakit, Montri Aiempanakit, Jariyaporn Rukkun, Pimchanok Reakaukot, Witthawat Wongpisan, K. Waree
TiAlN and TiAlN gradient films were deposited on Si substrates by reactive pulsed DC magnetron sputtering. The crystal structure and morphology of TiAlN films were characterized via X-ray diffraction (XRD), and field emission scanning electron microscope (FE-SEM), respectively. Moreover, elemental composition, hardness, and adhesion of TiAlN films were analyzed by energy-dispersive X-ray spectroscopy (EDS), nanoindentation test, and scratch test, respectively. The TiAlN films and TiAlN gradient films showed columnar structure and cubic crystal structure with different orientation planes. The elemental mapping of TiAlN gradient films clearly demonstrated the TiAlN gradient films. TiAlN gradient films have slightly lower hardness compared to TiAlN films while adhesion of the films increases.
{"title":"STRUCTURAL AND MECHANICAL PROPERTIES OF TiAlN AND TiAlN GRADIENT FILMS DEPOSITED BY REACTIVE PULSED DC MAGNETRON SPUTTERING","authors":"K. Aiempanakit, Montri Aiempanakit, Jariyaporn Rukkun, Pimchanok Reakaukot, Witthawat Wongpisan, K. Waree","doi":"10.55766/sujst-2023-02-e01594","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01594","url":null,"abstract":"TiAlN and TiAlN gradient films were deposited on Si substrates by reactive pulsed DC magnetron sputtering. The crystal structure and morphology of TiAlN films were characterized via X-ray diffraction (XRD), and field emission scanning electron microscope (FE-SEM), respectively. Moreover, elemental composition, hardness, and adhesion of TiAlN films were analyzed by energy-dispersive X-ray spectroscopy (EDS), nanoindentation test, and scratch test, respectively. The TiAlN films and TiAlN gradient films showed columnar structure and cubic crystal structure with different orientation planes. The elemental mapping of TiAlN gradient films clearly demonstrated the TiAlN gradient films. TiAlN gradient films have slightly lower hardness compared to TiAlN films while adhesion of the films increases.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"6 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81698096","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 : 2023-04-27DOI: 10.55766/sujst-2023-02-e01606
P. Sooksaen, Pakpum Jaiya
Granulated foam glass aggregates were fabricated and applied as fillers in lightweight concrete. Soda lime silicate based glass was used as the main raw material in the foam glass process. Firing temperatures in the range of 820-850ºC were suitable for the foaming process. Granulation was processed using a rotary granulator and heated to expand in an electric rotary furnace. Foaming at 840ºC showed overall properties suitable for applying as a filler in lightweight concrete fabrication e.g. low density, high porosity, uniform of pore size. Foam glass granules processed at 840ºC were mixed with cement paste in the ratios of 5, 10, 15, and 20 vol% to study for bulk density, compressive strength, thermal conductivity, thermal resistivity and sound absorption. Overall, increasing foam glass content in concrete caused a decrease in bulk density, compressive strength and thermal conductivity coefficient. In contrast, thermal resistance and sound absorption coefficient of the foam glass filled lightweight concretes improved significantly.
{"title":"FABRICATION OF GRANULATED FOAM GLASSES FOR LIGHTWEIGHT CONCRETE APPLIED FOR THERMAL AND SOUND INSULATION","authors":"P. Sooksaen, Pakpum Jaiya","doi":"10.55766/sujst-2023-02-e01606","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01606","url":null,"abstract":"Granulated foam glass aggregates were fabricated and applied as fillers in lightweight concrete. Soda lime silicate based glass was used as the main raw material in the foam glass process. Firing temperatures in the range of 820-850ºC were suitable for the foaming process. Granulation was processed using a rotary granulator and heated to expand in an electric rotary furnace. Foaming at 840ºC showed overall properties suitable for applying as a filler in lightweight concrete fabrication e.g. low density, high porosity, uniform of pore size. Foam glass granules processed at 840ºC were mixed with cement paste in the ratios of 5, 10, 15, and 20 vol% to study for bulk density, compressive strength, thermal conductivity, thermal resistivity and sound absorption. Overall, increasing foam glass content in concrete caused a decrease in bulk density, compressive strength and thermal conductivity coefficient. In contrast, thermal resistance and sound absorption coefficient of the foam glass filled lightweight concretes improved significantly.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88717349","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 : 2023-04-26DOI: 10.55766/sujst-2023-02-e01601
C. Chamroon, K. Thunsiri, S. Kumphune, W. Wattanutchariya, K. Rattanamongkhonkun
Currently, cell and tissue culture are a key to success for regenerative medicine and the pharmaceutical industry for implementing new therapeutic concepts. Cell culture is a complex process in which cells are grown under controlled conditions. Three-dimensional (3D) scaffolds provide space for cell adhesion and growth in 3D structures. However, in 3D cell culture, the ability to supply nutrients and oxygen, and the simultaneous removal of waste products and metabolites are the limiting factors for cells survival, due to nutrient starvation and metabolite toxicity. Therefore, an in-house 3D rotational bioreactor, for 3D cell culture, was designed, fabricated, and developed based on a chitosan porous scaffold. The 3D rotational bioreactor provides a continuously moving culture medium led to high rates of mass transfer throughout the scaffolds. The rotation speed and duration are programable and provide a continuous free flow during the rotating period. The results demonstrated the potential of an in-house 3D rotational bioreactor for better nutrient supply and waste transfer systems outweighs the conventional cell culture technique.
{"title":"DESIGN AND DEVELOPMENT OF 3D ROTATIONAL BIOREACTOR FOR 3D CELL CULTURE","authors":"C. Chamroon, K. Thunsiri, S. Kumphune, W. Wattanutchariya, K. Rattanamongkhonkun","doi":"10.55766/sujst-2023-02-e01601","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01601","url":null,"abstract":"Currently, cell and tissue culture are a key to success for regenerative medicine and the pharmaceutical industry for implementing new therapeutic concepts. Cell culture is a complex process in which cells are grown under controlled conditions. Three-dimensional (3D) scaffolds provide space for cell adhesion and growth in 3D structures. However, in 3D cell culture, the ability to supply nutrients and oxygen, and the simultaneous removal of waste products and metabolites are the limiting factors for cells survival, due to nutrient starvation and metabolite toxicity. Therefore, an in-house 3D rotational bioreactor, for 3D cell culture, was designed, fabricated, and developed based on a chitosan porous scaffold. The 3D rotational bioreactor provides a continuously moving culture medium led to high rates of mass transfer throughout the scaffolds. The rotation speed and duration are programable and provide a continuous free flow during the rotating period. The results demonstrated the potential of an in-house 3D rotational bioreactor for better nutrient supply and waste transfer systems outweighs the conventional cell culture technique.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"75 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82281545","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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