Pub Date : 2023-06-01DOI: 10.55003/cast.2023.256618
B. Poornasundari, S. Arivoli, K. Sankarasivaraman
Plant-based biogenic nanoparticle synthesis has appeared as a feasible alternative to conventional approaches to chemical synthesis. As a result, several environmentally benign methods for the quick production of silver nanoparticles have been published in recent years. The methods employ aqueous extracts of plant components like leaves, bark, and roots. In the present study, silver nanoparticles were synthesized from an aqueous leaf extract of S. auriculata. UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive x-ray analysis (EDAX) were employed to validate the synthesized nanoparticles. The UV analysis showed a peak range between 390-420 nm. FTIR showed the functional groups present in the silver nanoparticles (AgNPs). Moreover, the synthesized AgNPs were tested for their antimicrobial activity against both gram-negative and gram-positive bacterial strains. The antioxidant properties were studied with DPPH, hydrogen peroxide, and nitric oxide scavenging activity assays, and a cytotoxic assay was conducted against the Huh-7 cell line by a MTT study. The results showed that the synthesized silver nanoparticles possessed strong antibacterial, antioxidant, and cytotoxic activities against the Huh-7 cell line, indicating that the silver nanoparticles might be used in the pharmaceutical industry and for novel biological applications.
{"title":"Investigation of Anti-hepatocarcinogenic Effects of Senna auriculata Silver Nanoparticle and Evaluation of Their Antioxidant Potential","authors":"B. Poornasundari, S. Arivoli, K. Sankarasivaraman","doi":"10.55003/cast.2023.256618","DOIUrl":"https://doi.org/10.55003/cast.2023.256618","url":null,"abstract":"Plant-based biogenic nanoparticle synthesis has appeared as a feasible alternative to conventional approaches to chemical synthesis. As a result, several environmentally benign methods for the quick production of silver nanoparticles have been published in recent years. The methods employ aqueous extracts of plant components like leaves, bark, and roots. In the present study, silver nanoparticles were synthesized from an aqueous leaf extract of S. auriculata. UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive x-ray analysis (EDAX) were employed to validate the synthesized nanoparticles. The UV analysis showed a peak range between 390-420 nm. FTIR showed the functional groups present in the silver nanoparticles (AgNPs). Moreover, the synthesized AgNPs were tested for their antimicrobial activity against both gram-negative and gram-positive bacterial strains. The antioxidant properties were studied with DPPH, hydrogen peroxide, and nitric oxide scavenging activity assays, and a cytotoxic assay was conducted against the Huh-7 cell line by a MTT study. The results showed that the synthesized silver nanoparticles possessed strong antibacterial, antioxidant, and cytotoxic activities against the Huh-7 cell line, indicating that the silver nanoparticles might be used in the pharmaceutical industry and for novel biological applications.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48090576","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 : 2023-06-01DOI: 10.55003/cast.2023.254863
K. Silprasit, T. Rimlumduan, Naphat Phowana, S. Thummajitsakul
Heavy metal contamination in protected areas can cause sensitive ecosystems to be at risk. Bioindicators for monitoring heavy metal contamination need to be investigated. The objectives of this study were to determine heavy metal residues in soil in an urban area, and also lichens diversity. Twenty-two sampling plots of 1 km x 1 km size were selected in Nong Saeng sub-district, Pak Phli district in Nakhonayok province, Thailand. Lichens diversity was investigated, and soil samples were collected to analyze the amount of heavy metal residues in the soil. Afterwards, the potential ecological risk indexes (RI) and index of atmospheric purity (IAP) were presented. The results indicated that trace element concentrations in forest (For), urban (Urb) and agriculture (Agr) soils were not significantly different, and that land use type did not affect heavy metal contamination. However, two areas with high RI values of 358.27 and 483.76 were designated as being at considerable ecological risk. These values related to the lowest air quality index in distribution mapping of IAP. The relationship between index of atmospheric purity and potential ecological risk indexes (RI) of heavy metal accumulation in urban area implied that long-range transboundary air pollution may be a source of heavy metals contamination in some areas. The highest RI value related to Hg concentration in low land implied that it was possible that concentrations of heavy metals could have been affected by the discharge of wastewater into the low land, and especially in the study area that had acidic soil.
{"title":"Index of Atmospheric Purity (IAP) Related to Potential Ecological Risk Indexes (RI) of Heavy Metals Accumulation in Urban Area","authors":"K. Silprasit, T. Rimlumduan, Naphat Phowana, S. Thummajitsakul","doi":"10.55003/cast.2023.254863","DOIUrl":"https://doi.org/10.55003/cast.2023.254863","url":null,"abstract":"Heavy metal contamination in protected areas can cause sensitive ecosystems to be at risk. Bioindicators for monitoring heavy metal contamination need to be investigated. The objectives of this study were to determine heavy metal residues in soil in an urban area, and also lichens diversity. Twenty-two sampling plots of 1 km x 1 km size were selected in Nong Saeng sub-district, Pak Phli district in Nakhonayok province, Thailand. Lichens diversity was investigated, and soil samples were collected to analyze the amount of heavy metal residues in the soil. Afterwards, the potential ecological risk indexes (RI) and index of atmospheric purity (IAP) were presented. The results indicated that trace element concentrations in forest (For), urban (Urb) and agriculture (Agr) soils were not significantly different, and that land use type did not affect heavy metal contamination. However, two areas with high RI values of 358.27 and 483.76 were designated as being at considerable ecological risk. These values related to the lowest air quality index in distribution mapping of IAP. The relationship between index of atmospheric purity and potential ecological risk indexes (RI) of heavy metal accumulation in urban area implied that long-range transboundary air pollution may be a source of heavy metals contamination in some areas. The highest RI value related to Hg concentration in low land implied that it was possible that concentrations of heavy metals could have been affected by the discharge of wastewater into the low land, and especially in the study area that had acidic soil.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43074422","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 : 2023-06-01DOI: 10.55003/cast.2023.256415
M. Rafiqul Islam, J. Hossain, M. Ashraful Alam, Mohammad Sohidul Islam, Md. Mobinur Rahman, Alison M. Laing, A. Hossain
Relay cropping is a method that increases total productivity through maximum utilization of resources. In this study, we planned a field experiment, which was conducted at the Regional Agricultural Research Station, Ishwardi, Pabna during 2016-2017 and 2017-2018 to find out the most suitable way of relaying mukhikachu (MU) with hybrid maize to get the maximum benefit. Seven treatments: T1= Relay at silking stage (100 DAS), T2 = Relay at the blister stage (110 DAS), T3 = Relay at the milk stage (120 DAS), T4 = Relay at the dough stage (130 DAS), T5 = Relay at the dent stage (140 DAS), T6 = Sole hybrid maize, T7 = Sole mukhikachu, were compared in the study. It was found that among the treatments (relay cropping and sole stand), there was no significant difference in terms of yield and attributes of both base (maize) and relay crop (mukhikachu). In the entire treatment, maize yielded 10.54-11.30 t ha-1 with results of 3.28-3.66 MJ m-2day-1 light energy interception (120 DAS), 2.68-2.84 LAI (120 DAS) and 1534.63-1592.69 g m-2 TDM (140DAS). The mukhikachu yielded 26.88-27.28 t ha-1 among the relay cropping system. Maize equivalent yield (MEY) and BCR ranged from 28.48-29.18 t ha-1 and 2.33-2.39, respectively, amongst the relay cropping treatments. The land equivalent ratio (LER) of the relay cropping treatment produced almost double (1.934-1.996) that of the sole crops. Farmers can benefit by adopting this relay cropping technology when they grow long-duration crops, and this technology can lead to improved system productivity.
复种是一种通过最大限度地利用资源来提高总生产力的方法。在这项研究中，我们计划在2016-2017年和2017-2018年期间在巴布纳Ishwardi地区农业研究站进行一项田间试验，以找出用杂交玉米中继mukhikachu（MU）以获得最大效益的最合适方式。比较了7个处理：T1=吐丝期中继（100 DAS），T2=泡罩期中继（110 DAS），T3=乳期中继（120 DAS），T4=面团期中继（130 DAS），T5=凹陷期中继（140 DAS），T6=Sole杂交玉米，T7=Sole mukhikachu。研究发现，在不同处理（连作和单作）中，基础作物（玉米）和连作作物（mukhikachu）的产量和属性没有显著差异。在整个处理过程中，玉米产量为10.54-11.30 t ha-1，光能截留量为3.28-3.66 MJ m-2 day-1（120 DAS），LAI为2.68-2.84（120 DAS），TDM为1534.63-1592.69 g m-2（140 DAS）。在中继种植制度中，木卡丘产量为26.88～27.28吨ha-1。玉米当量产量（MEY）和BCR分别为28.48-29.18t ha-1和2.33-2.39。复种处理的土地当量比（LER）几乎是单一作物的两倍（1.934-1.996）。农民在种植长期作物时可以通过采用这种中继种植技术受益，这种技术可以提高系统生产力。
{"title":"Growth, Productivity, Competitive Ratio, Maize Equivalent Yield, Land Equivalent Ratio, and Profitability of Hybrid Maize as Influenced by Relay Cropping with Mukhikachu (Colocasia esculenta Schott.) during Rabi Season","authors":"M. Rafiqul Islam, J. Hossain, M. Ashraful Alam, Mohammad Sohidul Islam, Md. Mobinur Rahman, Alison M. Laing, A. Hossain","doi":"10.55003/cast.2023.256415","DOIUrl":"https://doi.org/10.55003/cast.2023.256415","url":null,"abstract":"Relay cropping is a method that increases total productivity through maximum utilization of resources. In this study, we planned a field experiment, which was conducted at the Regional Agricultural Research Station, Ishwardi, Pabna during 2016-2017 and 2017-2018 to find out the most suitable way of relaying mukhikachu (MU) with hybrid maize to get the maximum benefit. Seven treatments: T1= Relay at silking stage (100 DAS), T2 = Relay at the blister stage (110 DAS), T3 = Relay at the milk stage (120 DAS), T4 = Relay at the dough stage (130 DAS), T5 = Relay at the dent stage (140 DAS), T6 = Sole hybrid maize, T7 = Sole mukhikachu, were compared in the study. It was found that among the treatments (relay cropping and sole stand), there was no significant difference in terms of yield and attributes of both base (maize) and relay crop (mukhikachu). In the entire treatment, maize yielded 10.54-11.30 t ha-1 with results of 3.28-3.66 MJ m-2day-1 light energy interception (120 DAS), 2.68-2.84 LAI (120 DAS) and 1534.63-1592.69 g m-2 TDM (140DAS). The mukhikachu yielded 26.88-27.28 t ha-1 among the relay cropping system. Maize equivalent yield (MEY) and BCR ranged from 28.48-29.18 t ha-1 and 2.33-2.39, respectively, amongst the relay cropping treatments. The land equivalent ratio (LER) of the relay cropping treatment produced almost double (1.934-1.996) that of the sole crops. Farmers can benefit by adopting this relay cropping technology when they grow long-duration crops, and this technology can lead to improved system productivity.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48792888","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 : 2023-05-30DOI: 10.55003/cast.2023.254727
Zahra Al-Timimi, Zeina J. Tammemi, Muhammad Akram
A CO2 laser produces infrared photons that are largely absorbed by the skin and cause morphological alterations. Twenty-four (Wistar) rats weighing 290-380 g and ranging in age from 8 months to a year were chosen at random and divided into sixteen rats for histological examination and eight rats for tensile testing to determine the extent of injury caused by photothermal damage induced by multiple doses of a CO2 laser. Anesthesia was achieved with intramuscular doses of 10 mg/kg ketamine and 60 mg/kg Xylazine. Two equal 0.5 cm surgical incisions of rat dorsal skin were performed on the left and right sides. One was utilized as a control while the other was subjected to a 10600 nm CO2 laser at various power levels (12.5, 14.1, 15.6, and 17.2) W/cm2. According to the histological analysis, the non-irradiated skin appeared to be flawless, and normal skin layers were observed. The amount of radiation in the irradiated skin samples was closely related to tissue damage. Higher dosages of irradiation resulted in the most severe cellular mutilation. Tissue injury manifested as epidermal obliteration, coagulation, homogeneous hyalinization, and hair loss. The effects of CO2 laser interaction with the skin were explored in-depth in this study. Exposure to the CO2 laser resulted in severe burns and coagulation.
{"title":"The Effects of Multiple Power Densities of Carbon Dioxide Laser on Photothermal Damage in Rat Skin Tissue","authors":"Zahra Al-Timimi, Zeina J. Tammemi, Muhammad Akram","doi":"10.55003/cast.2023.254727","DOIUrl":"https://doi.org/10.55003/cast.2023.254727","url":null,"abstract":"A CO2 laser produces infrared photons that are largely absorbed by the skin and cause morphological alterations. Twenty-four (Wistar) rats weighing 290-380 g and ranging in age from 8 months to a year were chosen at random and divided into sixteen rats for histological examination and eight rats for tensile testing to determine the extent of injury caused by photothermal damage induced by multiple doses of a CO2 laser. Anesthesia was achieved with intramuscular doses of 10 mg/kg ketamine and 60 mg/kg Xylazine. Two equal 0.5 cm surgical incisions of rat dorsal skin were performed on the left and right sides. One was utilized as a control while the other was subjected to a 10600 nm CO2 laser at various power levels (12.5, 14.1, 15.6, and 17.2) W/cm2. According to the histological analysis, the non-irradiated skin appeared to be flawless, and normal skin layers were observed. The amount of radiation in the irradiated skin samples was closely related to tissue damage. Higher dosages of irradiation resulted in the most severe cellular mutilation. Tissue injury manifested as epidermal obliteration, coagulation, homogeneous hyalinization, and hair loss. The effects of CO2 laser interaction with the skin were explored in-depth in this study. Exposure to the CO2 laser resulted in severe burns and coagulation.\u0000 ","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46940422","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 : 2023-04-19DOI: 10.55003/cast.2023.06.23.003
E. Taer, Albino Taer
Toxins and substances with anti-nutritional potential have impeded the successful integration of root and tuber crops into animal diets. However, the ultimate indices of the physiological state of a farm animal are the growth performance and blood profiles. Hence, single and mixed formulations of Dioscorea hispida and Cyrtosperma merkusii root meals were used to assess chicken performance and hematological reactions. Two hundred and forty Bisaya chickens were fed with maize and root meals. Each set of treatments had 60 chickens, with three replicates of 20. The diets were: T1 (100% corn-based), T2 (50% D. hispida diet), T3 (50% C. merkusii diet), and T4 (25% D. hispida+25% C. merkusii diet). Feed intake, body weight, and mean weight gain (MWG) were collected biweekly, and carcass evaluation was done on harvesting. Hematological indices and serum profiles were tested. The T1 and T4 diets produced the most significant body weight and MWG, followed by T2 and T3. An improved feed conversion ratio (FCR) for T1 and T4 were significantly different from T2 and T3. The T4 specific growth rate (SGR) was similar to T1 and T2 but greater than T3. The T1 diet gave the most significant slaughter weight and dress weight, carcass components, and edible offal, followed by T4. The T4 diet raised PCV, RBC, Hb, cholesterol, and triglycerides more than T2, and T3, but no significant difference was found between T4 and T1. All solo root meal substitutes (T2 and T3) negatively impacted chicken performance; however, the 25% D. hispida+25% C. merkusii mix (T4) enhanced growth performance, most carcass features, and the blood profiles of slow-growing chickens when compared to a corn-based diet (T1).
{"title":"Hematology, Blood Serum, Growth Performance, and Carcass Characteristics of Slow-growing Chickens Fed Single and Blended Root Meals","authors":"E. Taer, Albino Taer","doi":"10.55003/cast.2023.06.23.003","DOIUrl":"https://doi.org/10.55003/cast.2023.06.23.003","url":null,"abstract":"Toxins and substances with anti-nutritional potential have impeded the successful integration of root and tuber crops into animal diets. However, the ultimate indices of the physiological state of a farm animal are the growth performance and blood profiles. Hence, single and mixed formulations of Dioscorea hispida and Cyrtosperma merkusii root meals were used to assess chicken performance and hematological reactions. Two hundred and forty Bisaya chickens were fed with maize and root meals. Each set of treatments had 60 chickens, with three replicates of 20. The diets were: T1 (100% corn-based), T2 (50% D. hispida diet), T3 (50% C. merkusii diet), and T4 (25% D. hispida+25% C. merkusii diet). Feed intake, body weight, and mean weight gain (MWG) were collected biweekly, and carcass evaluation was done on harvesting. Hematological indices and serum profiles were tested. The T1 and T4 diets produced the most significant body weight and MWG, followed by T2 and T3. An improved feed conversion ratio (FCR) for T1 and T4 were significantly different from T2 and T3. The T4 specific growth rate (SGR) was similar to T1 and T2 but greater than T3. The T1 diet gave the most significant slaughter weight and dress weight, carcass components, and edible offal, followed by T4. The T4 diet raised PCV, RBC, Hb, cholesterol, and triglycerides more than T2, and T3, but no significant difference was found between T4 and T1. All solo root meal substitutes (T2 and T3) negatively impacted chicken performance; however, the 25% D. hispida+25% C. merkusii mix (T4) enhanced growth performance, most carcass features, and the blood profiles of slow-growing chickens when compared to a corn-based diet (T1).","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43222591","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 : 2023-04-19DOI: 10.55003/cast.2023.06.23.007
Wenting Hou, Jian Qu
Despite the prevalence of scams in crowdfunding projects, currently, there is little research into the identification of fraudulent or infeasible crowdfunding projects. Since detecting fraudulent crowdfunding projects is challenging, most existing research on fake information has focused on detecting fake news or fake charity crowdfunding projects based on social media, but research on fraudulent or infeasible crowdfunding projects is very limited. Therefore, to solve this problem, we focus on how to detect fraudulent crowdfunding projects based on knowledge extraction and contradiction detection. We proposed a novel method called BM5-SP-SC (BERT-MT5-Sentence Pattern-Sentiment Classification). BM5 (BERT-MT5), which is built from a combination of a key-BERT and a fine-tuned MT5 transformers, was used to extract feature information from crowdfunding projects. We proposed a novel method for MT5 training to construct an adaptive BM5 model. The correct rate of keywords extracted by our novel adaptive BM5 model was up to 72.7%, the recall was 100%, and the F-measure was up to 84.19%. The minimum train loss of the BM5 model was up to 0.1342, and the evaluation loss achieved was 0.3064. The BLEU score of summary-to-keyword was 37.336. Moreover, we proposed an SP (Sentence Pattern) matching method to achieve knowledge extraction. Furthermore, SC (Sentiment Classification) was used to build a sentiment classifier thesaurus for identifying fraudulent and infeasible crowdfunding projects. Our proposed BM5-SP-SC achieved an overall accuracy of 85.26% in detecting fraudulent crowdfunding projects.
{"title":"BM5-SP-SC: A Dual Model Architecture for Contradiction Detection on Crowdfunding Projects","authors":"Wenting Hou, Jian Qu","doi":"10.55003/cast.2023.06.23.007","DOIUrl":"https://doi.org/10.55003/cast.2023.06.23.007","url":null,"abstract":"Despite the prevalence of scams in crowdfunding projects, currently, there is little research into the identification of fraudulent or infeasible crowdfunding projects. Since detecting fraudulent crowdfunding projects is challenging, most existing research on fake information has focused on detecting fake news or fake charity crowdfunding projects based on social media, but research on fraudulent or infeasible crowdfunding projects is very limited. Therefore, to solve this problem, we focus on how to detect fraudulent crowdfunding projects based on knowledge extraction and contradiction detection. We proposed a novel method called BM5-SP-SC (BERT-MT5-Sentence Pattern-Sentiment Classification). BM5 (BERT-MT5), which is built from a combination of a key-BERT and a fine-tuned MT5 transformers, was used to extract feature information from crowdfunding projects. We proposed a novel method for MT5 training to construct an adaptive BM5 model. The correct rate of keywords extracted by our novel adaptive BM5 model was up to 72.7%, the recall was 100%, and the F-measure was up to 84.19%. The minimum train loss of the BM5 model was up to 0.1342, and the evaluation loss achieved was 0.3064. The BLEU score of summary-to-keyword was 37.336. Moreover, we proposed an SP (Sentence Pattern) matching method to achieve knowledge extraction. Furthermore, SC (Sentiment Classification) was used to build a sentiment classifier thesaurus for identifying fraudulent and infeasible crowdfunding projects. Our proposed BM5-SP-SC achieved an overall accuracy of 85.26% in detecting fraudulent crowdfunding projects.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48693009","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}
Several researchers have studied e-learning success factors. However, there is rare research linking the success factors from the student perceptions to their data stored in the e-learning system, i.e., the student usage behavior and learning achievement. In addition, there is little research in the literature on mandatory use contexts. Thus, this study aimed to systematically examine and investigate the critical success factors (CSFs) of e-learning used for e-learning evaluation, using an e-learning system in mandatory use as a case study. The study is based on the D&M IS success model, the user satisfaction model, and success factors of e-learning systems. A structural equation model was used to analyze the data collected from 221 undergraduate students who used the system. The results indicated that e-learning success factors were information quality, system quality, instructor characteristics, diversity of assessment, system use, user satisfaction, benefits, and learning performance. In addition, system use has a highly positive and significant effect on learning performance, whereas the perceived benefits are determined by system use, instructor characteristics, information quality, and user satisfaction. Besides, instructor characteristics, system quality, and diversity of assessment had positive impact on user satisfaction. The findings provide insights to practitioners, academics, and policymakers to help them focus on factors that can be used to improve and evaluate the e-learning system. Our study contributes to the body of knowledge on e-learning system success and evaluation in mandatory use contexts.
{"title":"Examining the Critical Success Factors of E-Learning Using Structural Equation Model: A Case Study on the Mandatory Use","authors":"Srinual Nalintippayawong, Nattamol Kladyoo, Juthamart Phengkhlai","doi":"10.55003/cast.2023.06.23.001","DOIUrl":"https://doi.org/10.55003/cast.2023.06.23.001","url":null,"abstract":"Several researchers have studied e-learning success factors. However, there is rare research linking the success factors from the student perceptions to their data stored in the e-learning system, i.e., the student usage behavior and learning achievement. In addition, there is little research in the literature on mandatory use contexts. Thus, this study aimed to systematically examine and investigate the critical success factors (CSFs) of e-learning used for e-learning evaluation, using an e-learning system in mandatory use as a case study. The study is based on the D&M IS success model, the user satisfaction model, and success factors of e-learning systems. A structural equation model was used to analyze the data collected from 221 undergraduate students who used the system. The results indicated that e-learning success factors were information quality, system quality, instructor characteristics, diversity of assessment, system use, user satisfaction, benefits, and learning performance. In addition, system use has a highly positive and significant effect on learning performance, whereas the perceived benefits are determined by system use, instructor characteristics, information quality, and user satisfaction. Besides, instructor characteristics, system quality, and diversity of assessment had positive impact on user satisfaction. The findings provide insights to practitioners, academics, and policymakers to help them focus on factors that can be used to improve and evaluate the e-learning system. Our study contributes to the body of knowledge on e-learning system success and evaluation in mandatory use contexts.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46180245","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 : 2023-04-19DOI: 10.55003/cast.2023.06.23.004
Ta Thi Huong
Vietnam has recently accelerated the process of converting traditional parks into eco-industrial parks (EIP), which is a foundational strategy for sustainable prosperity. The purpose of this investigation is to evaluate the efficiency of EIP operations at Ninh Binh, Danang, and Can Tho pilots. The full permutation polygon synthetic indicator method (FPPSI) was used to evaluate the initial effectiveness of the application of the EIP program with many different indicators. The results indicated a number of interesting outcomes. In particular, there were saving of 51% in LPG fuel, 67.1% in coal, and 78.1% in wastewater in Ninh Binh pilot compared to the overall figure for each category. At the Can Tho pilot project, it was found that savings of freshwater of 77%, an electricity cuts of over 66.8%, a COD decline of 77%, and cost benefits of 56%. Generally speaking, our economy needs to promote business engagement in the heavy industry sector in the near future. This will involve developing inventive symbiosis networks that run simultaneously.
{"title":"Assessment of Eco-industrial Park (EIP) Performance at the Preliminary Step in Vietnam","authors":"Ta Thi Huong","doi":"10.55003/cast.2023.06.23.004","DOIUrl":"https://doi.org/10.55003/cast.2023.06.23.004","url":null,"abstract":"Vietnam has recently accelerated the process of converting traditional parks into eco-industrial parks (EIP), which is a foundational strategy for sustainable prosperity. The purpose of this investigation is to evaluate the efficiency of EIP operations at Ninh Binh, Danang, and Can Tho pilots. The full permutation polygon synthetic indicator method (FPPSI) was used to evaluate the initial effectiveness of the application of the EIP program with many different indicators. The results indicated a number of interesting outcomes. In particular, there were saving of 51% in LPG fuel, 67.1% in coal, and 78.1% in wastewater in Ninh Binh pilot compared to the overall figure for each category. At the Can Tho pilot project, it was found that savings of freshwater of 77%, an electricity cuts of over 66.8%, a COD decline of 77%, and cost benefits of 56%. Generally speaking, our economy needs to promote business engagement in the heavy industry sector in the near future. This will involve developing inventive symbiosis networks that run simultaneously.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42783026","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 : 2023-04-19DOI: 10.55003/cast.2023.06.23.013
Nguyen Lan Thanh, Vo Thanh Hang, Nguyễn Thi Thuy, Lam Pham Thanh Hien, Nguyen Nhat Huy
In this work, we proposed and tested a method for utilizing agricultural waste and alum sludge as an effective adsorbent to treat poultry wastewater. The product was also targeted to be used as fertilizer for agriculture. Modified biochar was produced from crop residues, sludge from a water treatment plant, and magnesium salt. The produced biochar was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer-Emmett-Teller analysis, and X-ray diffraction. The adsorption of ammonia and phosphate in both synthetic and actual poultry wastewater by the produced biochar was conducted. The effect of experimental conditions such as N to P ratio, initial concentrations of ammonium and phosphate, pH, and the amount of biochar on the adsorption capacity for ammonia and phosphate were also investigated. The results from the experiment showed that the best adsorption capacities were 60.64 mgNH4+-N/g and 66.24 mgPO43--P/g, which were produced at the optimum conditions of N to P ratio of 1.25, initial concentration of 90 mg/L, pH 6, and biochar mass of 0.105 g. These results create an opportunity for the effective production of slow-release fertilizer from crop residues and alum sludge for ecological agriculture in the future.
{"title":"Nutrient Recovery from Poultry Wastewater by Modified Biochar: An Optimization Study","authors":"Nguyen Lan Thanh, Vo Thanh Hang, Nguyễn Thi Thuy, Lam Pham Thanh Hien, Nguyen Nhat Huy","doi":"10.55003/cast.2023.06.23.013","DOIUrl":"https://doi.org/10.55003/cast.2023.06.23.013","url":null,"abstract":"In this work, we proposed and tested a method for utilizing agricultural waste and alum sludge as an effective adsorbent to treat poultry wastewater. The product was also targeted to be used as fertilizer for agriculture. Modified biochar was produced from crop residues, sludge from a water treatment plant, and magnesium salt. The produced biochar was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer-Emmett-Teller analysis, and X-ray diffraction. The adsorption of ammonia and phosphate in both synthetic and actual poultry wastewater by the produced biochar was conducted. The effect of experimental conditions such as N to P ratio, initial concentrations of ammonium and phosphate, pH, and the amount of biochar on the adsorption capacity for ammonia and phosphate were also investigated. The results from the experiment showed that the best adsorption capacities were 60.64 mgNH4+-N/g and 66.24 mgPO43--P/g, which were produced at the optimum conditions of N to P ratio of 1.25, initial concentration of 90 mg/L, pH 6, and biochar mass of 0.105 g. These results create an opportunity for the effective production of slow-release fertilizer from crop residues and alum sludge for ecological agriculture in the future.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43562783","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 : 2023-04-19DOI: 10.55003/cast.2023.06.23.008
Thitiwat Jirasirichot, T. Tulyananda, Ponchanok Datmanee, Kotchakorn Kraikaew, Warisara Surattaseranee, Wares Chancharoen, W. Chuaboon
This research explores the possibilities of using lunar soil resources in agriculture. The effectiveness of humic micro-encapsulated was investigated for physical and chemical quality improvement for lunar culture applications by using TLS-01 (Thailand artificial lunar regolith Simulant-01) as a test substance. Sunflower (Helianthus annuus L.) was used as the test plant. TLS-01 particles were evenly distributed, uncluttered, and consisted of 54.55% polygons and 45.45% rods, without having high water-holding capacity. The plants were grown in TLS-01, but their physical characteristics were unacceptable. Sunflower seedlings grown in TLS-01 soil showed a lower percentage of germination, and root and stem length compared to those grown in commercial planting material. After an improvement in physical properties and nutrients, from the study of the relationship between the soil used in the trial for planting and the humic acid concentration, no interaction between soil and humic acid was found. Therefore, while the soil types were significantly different, the humic was not. The results showed that a 1:1 mixture of TLS-01: coconut coir with the addition of 2 times the recommended dose of humic acid could enhance sunflower seedling relative to commercial planting material (p≤0.05). The germination percentage and growth indexes were 85.00% and 6.62, respectively. However, in order to stimulate actual usage for interplanetary application, coconut fiber-like materials and the humic substances were applied as in microcapsules. Additionally, the humic release test showed that after 6 h, the release of humic substance by Fickian diffusion was 73.45% and it then slowed down. The encapsulation efficiency was 90.37%.
{"title":"Improving the Quality of Lunar Regolith Simulant Soil for Future Food Security","authors":"Thitiwat Jirasirichot, T. Tulyananda, Ponchanok Datmanee, Kotchakorn Kraikaew, Warisara Surattaseranee, Wares Chancharoen, W. Chuaboon","doi":"10.55003/cast.2023.06.23.008","DOIUrl":"https://doi.org/10.55003/cast.2023.06.23.008","url":null,"abstract":"This research explores the possibilities of using lunar soil resources in agriculture. The effectiveness of humic micro-encapsulated was investigated for physical and chemical quality improvement for lunar culture applications by using TLS-01 (Thailand artificial lunar regolith Simulant-01) as a test substance. Sunflower (Helianthus annuus L.) was used as the test plant. TLS-01 particles were evenly distributed, uncluttered, and consisted of 54.55% polygons and 45.45% rods, without having high water-holding capacity. The plants were grown in TLS-01, but their physical characteristics were unacceptable. Sunflower seedlings grown in TLS-01 soil showed a lower percentage of germination, and root and stem length compared to those grown in commercial planting material. After an improvement in physical properties and nutrients, from the study of the relationship between the soil used in the trial for planting and the humic acid concentration, no interaction between soil and humic acid was found. Therefore, while the soil types were significantly different, the humic was not. The results showed that a 1:1 mixture of TLS-01: coconut coir with the addition of 2 times the recommended dose of humic acid could enhance sunflower seedling relative to commercial planting material (p≤0.05). The germination percentage and growth indexes were 85.00% and 6.62, respectively. However, in order to stimulate actual usage for interplanetary application, coconut fiber-like materials and the humic substances were applied as in microcapsules. Additionally, the humic release test showed that after 6 h, the release of humic substance by Fickian diffusion was 73.45% and it then slowed down. The encapsulation efficiency was 90.37%.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42015013","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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