This research adapts basic technologies to develop a method for determining motorcycle velocity that may be used as evidence against those who exceed the speed limit in areas lacking speed detection devices. The speed was measured on Samsen roads in Bangkok, at Google Earth locations (1346'33.51"N 10030'25.96"E). The speeds of 40, 60, and 80 kilometers per hour were measured and recorded using two smartphones and placed in points A and B in two reference locations. The videos were then converted to image files to count the number of frames and time traveled on the motorcycle and estimate the movement speed. The measurement results showed that the values were not significantly different from those obtained from google earth at the significance level of 0.05. Thedata was analyzed by excel (t-Test: Two-Sample Assuming Equal Variances).
{"title":"Motorcycle Speed Calculation while Driving with an Animation from a Smartphone","authors":"Wutthikorn Malikong, Vachira Chaychumdee, Pannaporn Hirannawakun, N. Sangwaranatee, Nisakorn Sangwaranatee, Piyawat Mankhong, Nuttapong Wattanasiripong","doi":"10.53848/ssstj.v10i1.423","DOIUrl":"https://doi.org/10.53848/ssstj.v10i1.423","url":null,"abstract":"This research adapts basic technologies to develop a method for determining motorcycle velocity that may be used as evidence against those who exceed the speed limit in areas lacking speed detection devices. The speed was measured on Samsen roads in Bangkok, at Google Earth locations (1346'33.51\"N 10030'25.96\"E). The speeds of 40, 60, and 80 kilometers per hour were measured and recorded using two smartphones and placed in points A and B in two reference locations. The videos were then converted to image files to count the number of frames and time traveled on the motorcycle and estimate the movement speed. The measurement results showed that the values were not significantly different from those obtained from google earth at the significance level of 0.05. Thedata was analyzed by excel (t-Test: Two-Sample Assuming Equal Variances).","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"8 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81036124","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 : 2022-12-26DOI: 10.53848/ssstj.v10i1.412
P. Wanniarachchi, P. Abeysundara
Worldwide there are lack of studies demonstrating the knowledge, attitude, and practices (KAP) about food safety and hygiene, among school children. Thus, this systematic review is an attempt to summarize the findings in previous literature about food safety knowledge, attitude, and practices among school children, in a specific time period, to get an overview of the topic. This review was performed according to PRISMA protocol. Three main international databases (Google Scholar, PubMed and Scopus) were used for the search of the articles, and only the journal articles published from 2010 to 2020 were considered. Of the 102 articles referred, only 10 original research studies were selected based on the criteria for inclusion and exclusion. Only 2 out of 10 studies pointedout significant correlations between the school children’s food safety knowledge, practices and attitudes. In addition, 1 out of 10 studies demonstrated significant associations between common demographics (academic performance of the children, the type of school, the area of residence, the habit of smoking and alcohol consumption and the educational background of the parents) and food safety knowledge among children. Furthermore, 8 out of 10 studies reported students to possess a poor or average knowledge of food safety while the rest of the studies showed students to possess good knowledge regarding food safety. Only 3 out of 10 studiesrevealed students to be engaged in safe food handling practices. It can be concluded that the assessment of food safety knowledge, attitude and practice as the most productive initiative to comprehend food safety-related insights among school children. Furthermore, this review highlights the fundamental requirement to improve children’s food safety knowledge and practices through proper education.
{"title":"A Systematic Review on Knowledge, Attitude and Practices (KAP) of Food Safety among School Children: A Global Perspective","authors":"P. Wanniarachchi, P. Abeysundara","doi":"10.53848/ssstj.v10i1.412","DOIUrl":"https://doi.org/10.53848/ssstj.v10i1.412","url":null,"abstract":"Worldwide there are lack of studies demonstrating the knowledge, attitude, and practices (KAP) about food safety and hygiene, among school children. Thus, this systematic review is an attempt to summarize the findings in previous literature about food safety knowledge, attitude, and practices among school children, in a specific time period, to get an overview of the topic. This review was performed according to PRISMA protocol. Three main international databases (Google Scholar, PubMed and Scopus) were used for the search of the articles, and only the journal articles published from 2010 to 2020 were considered. Of the 102 articles referred, only 10 original research studies were selected based on the criteria for inclusion and exclusion. Only 2 out of 10 studies pointedout significant correlations between the school children’s food safety knowledge, practices and attitudes. In addition, 1 out of 10 studies demonstrated significant associations between common demographics (academic performance of the children, the type of school, the area of residence, the habit of smoking and alcohol consumption and the educational background of the parents) and food safety knowledge among children. Furthermore, 8 out of 10 studies reported students to possess a poor or average knowledge of food safety while the rest of the studies showed students to possess good knowledge regarding food safety. Only 3 out of 10 studiesrevealed students to be engaged in safe food handling practices. It can be concluded that the assessment of food safety knowledge, attitude and practice as the most productive initiative to comprehend food safety-related insights among school children. Furthermore, this review highlights the fundamental requirement to improve children’s food safety knowledge and practices through proper education.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77893395","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 : 2022-12-26DOI: 10.53848/ssstj.v10i1.408
N. T. Thanh
In this paper, polyvinyl butyral (PVB) coatings with different nanosilica contents (0- 1.5 weight percent (wt%) were prepared for improving properties such as mechanical properties, corrosion protection, thermal oxidation stability of coating. Presence of nanosilica in coating was characterized by FT-IR. Corrosion resistance of PVB coatings containing nanosilica was investigated by salt mist testing. Effects of nanosilica on adhesion, flexural strength and relative hardness and thermal oxidation stability of PVB coatings were also examined. Nanosilica with content of 1.2 wt% significantly improved mechanical properties, corrosion resistance and thermal oxidation stability of PVB coatings.
{"title":"Improvement of physical and thermal properties of polyvinyl butyral coating with nanosilica","authors":"N. T. Thanh","doi":"10.53848/ssstj.v10i1.408","DOIUrl":"https://doi.org/10.53848/ssstj.v10i1.408","url":null,"abstract":"In this paper, polyvinyl butyral (PVB) coatings with different nanosilica contents (0- 1.5 weight percent (wt%) were prepared for improving properties such as mechanical properties, corrosion protection, thermal oxidation stability of coating. Presence of nanosilica in coating was characterized by FT-IR. Corrosion resistance of PVB coatings containing nanosilica was investigated by salt mist testing. Effects of nanosilica on adhesion, flexural strength and relative hardness and thermal oxidation stability of PVB coatings were also examined. Nanosilica with content of 1.2 wt% significantly improved mechanical properties, corrosion resistance and thermal oxidation stability of PVB coatings.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"83 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83881409","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 aim of this study was to investigate the physical, nutritional values and sensory evaluation of Thai sponge cake added with different levels of dried Sano flowers powder (DSFP) as a source of carotenoids. DSFP was prepared and analyzed for total carotenoids. DSFP contained lutein, zeaxanthin and β-carotene around 29,947.94, 620.03 and 1,555.98 μg in 100 g of dry sample, respectively. The sensory liking scores were determined to be suitable to produce Thai sponge cake. Results showed that, Thai sponge cake recipe consisted of 240 g of duck eggs, 180 g of chicken eggs, 180 g of cake flour, 360 g of granulated sugar. The effects of the addition withdifferent levels of DSFP (20, 40 and 60 %w/w) of Thai sponge cake was studied. An increase of the DSFP decreased of lightness (L*), redness (a*) value, springiness, and chewiness while yellowness (b*) value, hardness, cohesiveness, and gumminess were increased. The sensory evaluation showed that all treatments obtained the overall liking score of 6.14-6.86. The study clearly showed that the levels of 20% w/w DSFP could be a desirable amount to produce the healthy Thai sponge cake with good enough appearance, odour, taste, texture, with an overall liking score of more than 6.00 that is considered as acceptable. The developed Thai sponge cake contained protein, fat, dietary fiber, ash, moisture, and carbohydrates 9.45, 5.23, 2.64, 1.16, 33.94 and 52.42 g in 100 g respectively, and 319.10 μg/100 g β-carotene 319.10 μg/100 g. The developed product supplemented with DSFP would be a guideline toincrease the health and quality of cake products.
{"title":"Effects of Dried Sano (Sesbania javanica Miq.) Flowers Powder on the Quality of Thai Sponge Cake","authors":"Jiraporn Weenuttranon, Patthama Hirunyophat, Nunyoung Fuengkajhornfung, Tidarat Sanphom","doi":"10.53848/ssstj.v10i1.409","DOIUrl":"https://doi.org/10.53848/ssstj.v10i1.409","url":null,"abstract":"The aim of this study was to investigate the physical, nutritional values and sensory evaluation of Thai sponge cake added with different levels of dried Sano flowers powder (DSFP) as a source of carotenoids. DSFP was prepared and analyzed for total carotenoids. DSFP contained lutein, zeaxanthin and β-carotene around 29,947.94, 620.03 and 1,555.98 μg in 100 g of dry sample, respectively. The sensory liking scores were determined to be suitable to produce Thai sponge cake. Results showed that, Thai sponge cake recipe consisted of 240 g of duck eggs, 180 g of chicken eggs, 180 g of cake flour, 360 g of granulated sugar. The effects of the addition withdifferent levels of DSFP (20, 40 and 60 %w/w) of Thai sponge cake was studied. An increase of the DSFP decreased of lightness (L*), redness (a*) value, springiness, and chewiness while yellowness (b*) value, hardness, cohesiveness, and gumminess were increased. The sensory evaluation showed that all treatments obtained the overall liking score of 6.14-6.86. The study clearly showed that the levels of 20% w/w DSFP could be a desirable amount to produce the healthy Thai sponge cake with good enough appearance, odour, taste, texture, with an overall liking score of more than 6.00 that is considered as acceptable. The developed Thai sponge cake contained protein, fat, dietary fiber, ash, moisture, and carbohydrates 9.45, 5.23, 2.64, 1.16, 33.94 and 52.42 g in 100 g respectively, and 319.10 μg/100 g β-carotene 319.10 μg/100 g. The developed product supplemented with DSFP would be a guideline toincrease the health and quality of cake products.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"130 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79603463","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 : 2022-12-26DOI: 10.53848/ssstj.v10i1.411
Soni Adiyono, Sendi Novianto
Game methods today have often been applied in several functions in the presentation in the realm of learning in multi-disciplines. The application of gaming methods is very varied to provide a different presentation for students to obtain a goal in the organization. In this case, the purpose of an organization is to increase the productivity and quality of a student. This paper discusses the methods and domains that are often used in the realm of education to achieve a goal. Systematic Literature Review is used in the application of research methods by finding selected articles with selected themes. In sorting the selected journals, inclusion and exclusion were also applied to obtain better article search results, and some 1,256 articles were found in the process, the application of filtering withexclusion and inclusion in this phase will result in 265 articles that fall into the category of candidate study discussion. The journal articles conclude that there are only 20 articles that can answer the questions in this paper. The results in this paper state that the Gaming Method in the realm of education is varied and the familiar game genre grouping used in the selected article is Simulation Game. The entire database in this research paper was obtained directly from the largest international journal alert database, namely Scopus. This is done by the database under the auspices of Elsevier as an organization or company publishing international scientific publications based in Amsterdam, the Netherlands since 1880.
{"title":"Game Method Based on Genre Game as Higher Educational Learning: Systematic Literature Review with VOSviewer","authors":"Soni Adiyono, Sendi Novianto","doi":"10.53848/ssstj.v10i1.411","DOIUrl":"https://doi.org/10.53848/ssstj.v10i1.411","url":null,"abstract":"Game methods today have often been applied in several functions in the presentation in the realm of learning in multi-disciplines. The application of gaming methods is very varied to provide a different presentation for students to obtain a goal in the organization. In this case, the purpose of an organization is to increase the productivity and quality of a student. This paper discusses the methods and domains that are often used in the realm of education to achieve a goal. Systematic Literature Review is used in the application of research methods by finding selected articles with selected themes. In sorting the selected journals, inclusion and exclusion were also applied to obtain better article search results, and some 1,256 articles were found in the process, the application of filtering withexclusion and inclusion in this phase will result in 265 articles that fall into the category of candidate study discussion. The journal articles conclude that there are only 20 articles that can answer the questions in this paper. The results in this paper state that the Gaming Method in the realm of education is varied and the familiar game genre grouping used in the selected article is Simulation Game. The entire database in this research paper was obtained directly from the largest international journal alert database, namely Scopus. This is done by the database under the auspices of Elsevier as an organization or company publishing international scientific publications based in Amsterdam, the Netherlands since 1880.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82309084","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 : 2022-12-26DOI: 10.53848/ssstj.v10i1.414
E. Nwankwo, Ebubechi Uloma Okey-kalu, F. Eze
Commercial vehicles are all kinds of vehicles used to transport goods and people. Microbiological investigationof publicly touchable surfaces has become an interest to researchers because surfaces that are contaminated can function as reservoir of potential pathogens. This study was carried out to determine the levels of bacterialcontamination on the surfaces of two door handles on public buses within Umuahia metropolis. A total of 70samples, 35 each from the passengers and driver’s door handles surface were collected and analyzed. The analysisinvolved bacterial isolation and identification of organisms by standard microbiological procedures. Theprevalence and bacteria count were carried out. The antibiotic sensitivity pattern of the isolates were done usingthe disc diffusion method. A total number of 73 bacterial organisms were isolated. The following potentialpathogenic bacteria were observed; Staphylococcus aureus (6.8%), Staphylococcus epidermidis (5.5%),Streptococcus faecalis (2.7%), Escherichia coli (6.8%), Klebsiella spp. (5.5%), Enterobacter spp. (4.1%), Pseudomonasaeruginosa (17.8%), Proteus spp. (23.3%), Micrococcus spp. (6.8%) and Bacillus spp. (20.5%). Ofloxacin, Pefloxacinand Gentamicin are effective and exhibited encouraging results while Ampicillin and Trimethoprim were resistant to most isolates. The result actually shows that the door handles of motor vehicle used for public transportationcan be a significant reservoir for spreading potential pathogenic microorganisms.
{"title":"Bacterial Contamination of Door Handles of Commercial Buses in Umuahia Metropolis Abia State","authors":"E. Nwankwo, Ebubechi Uloma Okey-kalu, F. Eze","doi":"10.53848/ssstj.v10i1.414","DOIUrl":"https://doi.org/10.53848/ssstj.v10i1.414","url":null,"abstract":"Commercial vehicles are all kinds of vehicles used to transport goods and people. Microbiological investigationof publicly touchable surfaces has become an interest to researchers because surfaces that are contaminated can function as reservoir of potential pathogens. This study was carried out to determine the levels of bacterialcontamination on the surfaces of two door handles on public buses within Umuahia metropolis. A total of 70samples, 35 each from the passengers and driver’s door handles surface were collected and analyzed. The analysisinvolved bacterial isolation and identification of organisms by standard microbiological procedures. Theprevalence and bacteria count were carried out. The antibiotic sensitivity pattern of the isolates were done usingthe disc diffusion method. A total number of 73 bacterial organisms were isolated. The following potentialpathogenic bacteria were observed; Staphylococcus aureus (6.8%), Staphylococcus epidermidis (5.5%),Streptococcus faecalis (2.7%), Escherichia coli (6.8%), Klebsiella spp. (5.5%), Enterobacter spp. (4.1%), Pseudomonasaeruginosa (17.8%), Proteus spp. (23.3%), Micrococcus spp. (6.8%) and Bacillus spp. (20.5%). Ofloxacin, Pefloxacinand Gentamicin are effective and exhibited encouraging results while Ampicillin and Trimethoprim were resistant to most isolates. The result actually shows that the door handles of motor vehicle used for public transportationcan be a significant reservoir for spreading potential pathogenic microorganisms.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"08 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86083811","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 : 2022-12-26DOI: 10.53848/ssstj.v10i1.415
N. Choothong, Sonthaya Pongthanee
The sound insulation properties of local economic materials made from natural rubber latex and pineapple leaf fiber were investigated, in order to develop and increase the economy of the community. The surface of pineapple leaf fiber was treated with alkaline treatment individually. The random fiber range was mixed with natural rubber latex in five different fractions, varying from 10% to 50% with an increment of 10%. The thickness of each sample is kept constant at 50 mm. Method used to measure sound absorption coefficient (α) is Impedance Tube Method ASTM E1050-09, which has been used for measuring the sound absorption and sound transmission loss. It was found that the sound absorption coefficient (SAC) increases with the fiber fraction. The sound insulation test results show that the obtained product of natural rubber with pineapple leaf fiber has a promising possibility that can be used as a potential material for the development of sustainable sound absorber material.
{"title":"Sound Insolation of Local Economic Materials Prepared by Natural Rubber Latex and Pineapple Leaf Fiber","authors":"N. Choothong, Sonthaya Pongthanee","doi":"10.53848/ssstj.v10i1.415","DOIUrl":"https://doi.org/10.53848/ssstj.v10i1.415","url":null,"abstract":"The sound insulation properties of local economic materials made from natural rubber latex and pineapple leaf fiber were investigated, in order to develop and increase the economy of the community. The surface of pineapple leaf fiber was treated with alkaline treatment individually. The random fiber range was mixed with natural rubber latex in five different fractions, varying from 10% to 50% with an increment of 10%. The thickness of each sample is kept constant at 50 mm. Method used to measure sound absorption coefficient (α) is Impedance Tube Method ASTM E1050-09, which has been used for measuring the sound absorption and sound transmission loss. It was found that the sound absorption coefficient (SAC) increases with the fiber fraction. The sound insulation test results show that the obtained product of natural rubber with pineapple leaf fiber has a promising possibility that can be used as a potential material for the development of sustainable sound absorber material.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"124 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79497670","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 : 2022-12-26DOI: 10.53848/ssstj.v10i1.413
M. Kalu, E. Nwankwo, Ebubechi Uloma Okey-kalu
Bacterial contamination of the labor and delivery room is of clinical concern because it is one of the major risk factors of sepsis in neonates and most life threatening nosocomial infections for mothers after undergoing childbirth procedures. From six different Primary Healthcare Centres (PHC), 300 samples of fomites were taken. They were screened for the presence of bacterial pathogens. Preliminary identification of bacterial isolates was performed based on Gram stain reactions and standard microbiological methods. Antibiotic susceptibility testing was done using Kirby- Bauer disc diffusion technique. The isolates of clinical importance observed wereStaphylococcus aureus (35.1%), Bacillus spp. (15.5%), Streptococcus spp. (14.8%), Escherichia coli (10.1%), Coagulase Negative Staphylococcus (CONS) (8.1%), Proteus spp. (7.4%), Pseudomonas aeruginosa (5.4%), Klebsiella spp. (1.3%). Eight (8) antibiotics used against Staphylococcus aureus which was the most prevalent isolate showed below 50% sensitivity. High level resistance to commonly prescribed and administered antibiotics was observed. The most frequently isolated bacteria in this study were consistent with the isolates which could cause nosocomial infections.
{"title":"Bacterial Contamination of Labor Wards and Delivery Rooms from Selected Primary Healthcare Facilities in Abia State","authors":"M. Kalu, E. Nwankwo, Ebubechi Uloma Okey-kalu","doi":"10.53848/ssstj.v10i1.413","DOIUrl":"https://doi.org/10.53848/ssstj.v10i1.413","url":null,"abstract":"Bacterial contamination of the labor and delivery room is of clinical concern because it is one of the major risk factors of sepsis in neonates and most life threatening nosocomial infections for mothers after undergoing childbirth procedures. From six different Primary Healthcare Centres (PHC), 300 samples of fomites were taken. They were screened for the presence of bacterial pathogens. Preliminary identification of bacterial isolates was performed based on Gram stain reactions and standard microbiological methods. Antibiotic susceptibility testing was done using Kirby- Bauer disc diffusion technique. The isolates of clinical importance observed wereStaphylococcus aureus (35.1%), Bacillus spp. (15.5%), Streptococcus spp. (14.8%), Escherichia coli (10.1%), Coagulase Negative Staphylococcus (CONS) (8.1%), Proteus spp. (7.4%), Pseudomonas aeruginosa (5.4%), Klebsiella spp. (1.3%). Eight (8) antibiotics used against Staphylococcus aureus which was the most prevalent isolate showed below 50% sensitivity. High level resistance to commonly prescribed and administered antibiotics was observed. The most frequently isolated bacteria in this study were consistent with the isolates which could cause nosocomial infections.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85523824","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 : 2022-12-26DOI: 10.53848/ssstj.v10i1.410
C. Phromchaloem, Laphatsarapha Kumkaeo, Nattapornpash Insiripong, L. Muensritharam
This research studied the effect of cadmium (Cd) on the growth of mung bean (Vigna radiata (L.) R. Wilczek). The mung bean was cultured in a Hoagland solution containing different concentrations of Cd (0, 0.1, 0.3 and 0.5 mg/L) for 5 days. The result showed a significant decrease in the lengths of the roots and shoots of mung bean that was grown in cadmium solution. This effect was proportional to the concentrations of Cd. To assess cell death in the root of mung bean, Evan’ s blue staining technique was used in this study. The results showed that the concentrations of Evan's blue dye taken up by Cd-exposed mung beans at 0.1, 0.3, and 0.5 mg/L were 1.5612 ± 0.5417, 6.8641 ± 1.7447, and 8.0850 ± 2.6336 mg/L, respectively. A concentration-dependent increase of dead cellswas found in the Cd-treated group, mostly at the root cap zone. With respect to this result, the level of dead cells that was stained with Evan’s blue dye could be used as a biomarker to indicate cadmium contamination in water. Furthermore, the effects of chelating agents (EDTA) on cadmium removal were also studied. The results showed the possibility of using EDTA as a cadmium treatment agent and promoted plant growth in cadmium contamination areas.
{"title":"Inhibitory Effect of Cadmium on the Growth of Mung Bean (Vigna radiata (L.) R. Wilczek) and the Removal by Chelating Agent","authors":"C. Phromchaloem, Laphatsarapha Kumkaeo, Nattapornpash Insiripong, L. Muensritharam","doi":"10.53848/ssstj.v10i1.410","DOIUrl":"https://doi.org/10.53848/ssstj.v10i1.410","url":null,"abstract":"This research studied the effect of cadmium (Cd) on the growth of mung bean (Vigna radiata (L.) R. Wilczek). The mung bean was cultured in a Hoagland solution containing different concentrations of Cd (0, 0.1, 0.3 and 0.5 mg/L) for 5 days. The result showed a significant decrease in the lengths of the roots and shoots of mung bean that was grown in cadmium solution. This effect was proportional to the concentrations of Cd. To assess cell death in the root of mung bean, Evan’ s blue staining technique was used in this study. The results showed that the concentrations of Evan's blue dye taken up by Cd-exposed mung beans at 0.1, 0.3, and 0.5 mg/L were 1.5612 ± 0.5417, 6.8641 ± 1.7447, and 8.0850 ± 2.6336 mg/L, respectively. A concentration-dependent increase of dead cellswas found in the Cd-treated group, mostly at the root cap zone. With respect to this result, the level of dead cells that was stained with Evan’s blue dye could be used as a biomarker to indicate cadmium contamination in water. Furthermore, the effects of chelating agents (EDTA) on cadmium removal were also studied. The results showed the possibility of using EDTA as a cadmium treatment agent and promoted plant growth in cadmium contamination areas.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89892064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Pivsa‐Art, N. Roungpaisan, Mathurot Malimat, W. Pivsa‐Art
This research studied the utilization of biodegradable polymer for nonwoven fabric production and applied to fabricate a sound absorbing panel by corporate with natural fiber nonwoven fabric. PLA was used as a biodegradable polymer and hemp nonwoven was used as a natural fiber nonwoven fabric. PLA nonwoven fabric was prepared using a melt jet spinning process. The spinning process was carried out at 250 and 260°C with screw speed of 10 rpm and air blown pressure of 0.3 and 0.5 MPa. The die-to-collector of fabric production was studied at 30 and 60 cm to compare the nonwoven fabric product property. It was found that the process temperature, air pressure and die-to-collector distance have significant effects on the nonwoven fabric thickness, GSM, and fabric density. Air permeability decreased with high fabric thickness as well as fine fibers which supported the property of sound absorbing panels. Therefore, the suitable conditions for sound absorbing panel fabrication were processed at temperature of 260°C, air pressure 0.5 MPa and die-to-collector distance of 60 cm. Sound absorbing coefficient measurement revealed that GSM fabric thickness had an effect on increasing sound absorption. The effect of nonwoven sheet order and arrangement of PLA nonwoven and hemp nonwoven of 3 layers sandwich indicated that the layers order of PLA/PLA/Hemp had high sound absorbing coefficient that was comparable with PLA/PLA/PLA due to fiber size and arrangement.
{"title":"Sound Absorbing Panels from Poly(lactic acid) Non-woven Fabric and Natural Fibers","authors":"S. Pivsa‐Art, N. Roungpaisan, Mathurot Malimat, W. Pivsa‐Art","doi":"10.53848/ssstj.v9i2.237","DOIUrl":"https://doi.org/10.53848/ssstj.v9i2.237","url":null,"abstract":"This research studied the utilization of biodegradable polymer for nonwoven fabric production and applied to fabricate a sound absorbing panel by corporate with natural fiber nonwoven fabric. PLA was used as a biodegradable polymer and hemp nonwoven was used as a natural fiber nonwoven fabric. PLA nonwoven fabric was prepared using a melt jet spinning process. The spinning process was carried out at 250 and 260°C with screw speed of 10 rpm and air blown pressure of 0.3 and 0.5 MPa. The die-to-collector of fabric production was studied at 30 and 60 cm to compare the nonwoven fabric product property. It was found that the process temperature, air pressure and die-to-collector distance have significant effects on the nonwoven fabric thickness, GSM, and fabric density. Air permeability decreased with high fabric thickness as well as fine fibers which supported the property of sound absorbing panels. Therefore, the suitable conditions for sound absorbing panel fabrication were processed at temperature of 260°C, air pressure 0.5 MPa and die-to-collector distance of 60 cm. Sound absorbing coefficient measurement revealed that GSM fabric thickness had an effect on increasing sound absorption. The effect of nonwoven sheet order and arrangement of PLA nonwoven and hemp nonwoven of 3 layers sandwich indicated that the layers order of PLA/PLA/Hemp had high sound absorbing coefficient that was comparable with PLA/PLA/PLA due to fiber size and arrangement.","PeriodicalId":31349,"journal":{"name":"Suan Sunandha Rajabhat University Journal of Science and Technology","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86251253","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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