Depression in older adults has remained 1 of the major detrimental public health problems both worldwide and in Thailand. Among the myriad healing approaches, mental attachment on the basis of grandchildren’s love language is favorably perceived by Thai older adults with depression. The purpose of this quasi-experimental study was to evaluate the effects of grandchildren’s love language program on reducing depression among Thai older adults. Eighty Thai older adults with mild to moderate depression levels received the so-called “Love Language of Grandchildren Program” (n = 40) and usual care (n = 40). The Nine-Question Scale (9Q) and Hamilton Rating Scale for Depression (HRSD) were distributed at the pre- and post-treatment and at the 12 and 24-week of the follow-ups. The treatment effectiveness was evaluated by using Multivariate Analysis of Covariance (MANCOVA). The 9Q and HRSD scores revealed a significantly neutralized depression for those in love language of grandchildren program and, on the other hand, no decline was observed in the usual care’s participants. Love language of grandchildren program effectively reduced 9Q and HRSD symptoms of emotional, cognitive, behavioral, and physical conditions respectively. It was also more effective than the usual care in reducing mild to moderate symptoms of depression (p < 0.05). The findings provide better understanding on how grandchildren approach to prevent depression for Thai older adults in a family and community, and can be used to guide further capacity development for grandchildren who provide helping to this group.
{"title":"Effects of Grandchildren’s Love Language Program on Depression among Thai Older Adults","authors":"Saifon Aekwarangkoon, Naiyana Noonil","doi":"10.48048/WJST.2020.4979","DOIUrl":"https://doi.org/10.48048/WJST.2020.4979","url":null,"abstract":"Depression in older adults has remained 1 of the major detrimental public health problems both worldwide and in Thailand. Among the myriad healing approaches, mental attachment on the basis of grandchildren’s love language is favorably perceived by Thai older adults with depression. The purpose of this quasi-experimental study was to evaluate the effects of grandchildren’s love language program on reducing depression among Thai older adults. Eighty Thai older adults with mild to moderate depression levels received the so-called “Love Language of Grandchildren Program” (n = 40) and usual care (n = 40). The Nine-Question Scale (9Q) and Hamilton Rating Scale for Depression (HRSD) were distributed at the pre- and post-treatment and at the 12 and 24-week of the follow-ups. The treatment effectiveness was evaluated by using Multivariate Analysis of Covariance (MANCOVA). The 9Q and HRSD scores revealed a significantly neutralized depression for those in love language of grandchildren program and, on the other hand, no decline was observed in the usual care’s participants. Love language of grandchildren program effectively reduced 9Q and HRSD symptoms of emotional, cognitive, behavioral, and physical conditions respectively. It was also more effective than the usual care in reducing mild to moderate symptoms of depression (p < 0.05). The findings provide better understanding on how grandchildren approach to prevent depression for Thai older adults in a family and community, and can be used to guide further capacity development for grandchildren who provide helping to this group.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121420262","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}
Effective control disease measures require a great deal of knowledge about the pathogen, which is also applied to dieback disease of the nutmeg tree in Aceh Selatan District, Province of Aceh, Indonesia. The objectives of this study were to identify the causal agent of dieback disease on a nutmeg plantation and to assess the effect of drought stress on the development of dieback disease. Pathogen identification was carried out by observing the symptoms of infected plants, morphological characters of the isolated pathogens, Koch’s postulates, and molecular analysis and pure pathogen cultures. The samples were taken from an infected part of the nutmeg plant (twigs, stems, and roots) in 6 subdistricts at the center of the nutmeg plantation in Aceh Selatan. Koch's postulates were performed by using the mycelia of pathogens on 1-year-old nutmeg seedlings. Drought stress was simulated everyday, and then once every 2 weeks, to study the effect of drought stress on dieback. The results showed that there were 4 genera of fungal pathogens (Botryodiplodia theobromae, Fusarium solani, Graphium euwallaceae, and Rigidoporus microporus) out of 6 fungi associated with dieback disease. However, B. theobromae Pat. turned out to be the dominant fungi associated with dieback on the nutmeg tree in Aceh Selatan. Drought stress was proven to be a predisposing factor for explaining this problem epidemic in Aceh Selatan.
{"title":"Diagnosis of Dieback Disease of the Nutmeg Tree in Aceh Selatan, Indonesia","authors":"S. Susanna, M. S. Sinaga, S. Wiyono, H. Triwidodo","doi":"10.48048/wjst.2020.4379","DOIUrl":"https://doi.org/10.48048/wjst.2020.4379","url":null,"abstract":"Effective control disease measures require a great deal of knowledge about the pathogen, which is also applied to dieback disease of the nutmeg tree in Aceh Selatan District, Province of Aceh, Indonesia. The objectives of this study were to identify the causal agent of dieback disease on a nutmeg plantation and to assess the effect of drought stress on the development of dieback disease. Pathogen identification was carried out by observing the symptoms of infected plants, morphological characters of the isolated pathogens, Koch’s postulates, and molecular analysis and pure pathogen cultures. The samples were taken from an infected part of the nutmeg plant (twigs, stems, and roots) in 6 subdistricts at the center of the nutmeg plantation in Aceh Selatan. Koch's postulates were performed by using the mycelia of pathogens on 1-year-old nutmeg seedlings. Drought stress was simulated everyday, and then once every 2 weeks, to study the effect of drought stress on dieback. The results showed that there were 4 genera of fungal pathogens (Botryodiplodia theobromae, Fusarium solani, Graphium euwallaceae, and Rigidoporus microporus) out of 6 fungi associated with dieback disease. However, B. theobromae Pat. turned out to be the dominant fungi associated with dieback on the nutmeg tree in Aceh Selatan. Drought stress was proven to be a predisposing factor for explaining this problem epidemic in Aceh Selatan.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117211598","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}
Umaporn Kuasit, S. Chunuan, U. Hatthakit, L. Bullock
The purposes of this study were to evaluate the effects of the resilience enhancing nursing program (RENP) on resilience and depression among pregnant teenagers who received this program. A quasi experimental was conducted with 130 pregnant Thai women. Final analysis included 130 participants (Intervention n = 64 and control group n = 66). The RENP was delivered in three steps including; Step 1, establishing trusting relationships; Step 2, improving the resilience, and Step 3, monitoring and encouraging the resilience practice. The research instruments consisted of a demographic data questionnaire, and resilience and depressive program instruments, including a handbook and self-report. Research data were analyzed and displayed, providing percentage, mean, standard deviation, chi-square, independent t-test, paired t-test, and the repeated measures ANOVA. The findings showed a significant difference in depression by time alone (p = 0.001). However, there was no significant difference by group alone in depression (p = 0.969). This study revealed mean score on depression in the experimental group was not significantly lower than before entering the program at week 4 and week 8 (p = 0.870, p = 0.428). However, resilience showed difference in score over time between the experimental group and control group. There was a significant difference in resilience score by time alone (F = 10.523, p < 0.001). The results can contribute to guiding nurses to enhance decrease in depression in pregnant teenagers in the earlier first trimester in antenatal care units. Nurse or nurse midwife should be concerned about the potential for early detection in the prenatal period and provide appropriate interventions to teenage mothers in the postnatal period.
本研究的目的是评估心理弹性增强护理计划(RENP)对怀孕少女心理弹性和抑郁的影响。对130名泰国孕妇进行了准实验。最终分析纳入130名参与者(干预组64名，对照组66名)。RENP分三个步骤交付，包括:第一步，建立信任关系;第二步，提高弹性，第三步，监督和鼓励弹性实践。研究工具包括人口统计数据问卷、心理韧性和抑郁项目工具，包括一本手册和自我报告。对研究数据进行分析和显示，提供百分比、平均值、标准差、卡方、独立t检验、配对t检验和重复测量方差分析。研究结果显示，单独时间对抑郁的影响有显著差异(p = 0.001)。两组在抑郁方面差异无统计学意义(p = 0.969)。本研究发现，实验组的抑郁平均得分在第4周和第8周均未显著低于入组前(p = 0.870, p = 0.428)。然而，实验组和对照组的心理弹性随时间的变化表现出差异。时间因素对心理弹性评分有显著影响(F = 10.523, p < 0.001)。研究结果有助于指导护士在产前护理部门加强减少怀孕少女早期抑郁的工作。护士或助产士应关注产前早期发现的可能性，并在产后为少女母亲提供适当的干预措施。
{"title":"The Effects of a Resilience Enhancing Nursing Program on Depression among Pregnant Teenagers","authors":"Umaporn Kuasit, S. Chunuan, U. Hatthakit, L. Bullock","doi":"10.48048/wjst.2020.3630","DOIUrl":"https://doi.org/10.48048/wjst.2020.3630","url":null,"abstract":"The purposes of this study were to evaluate the effects of the resilience enhancing nursing program (RENP) on resilience and depression among pregnant teenagers who received this program. A quasi experimental was conducted with 130 pregnant Thai women. Final analysis included 130 participants (Intervention n = 64 and control group n = 66). The RENP was delivered in three steps including; Step 1, establishing trusting relationships; Step 2, improving the resilience, and Step 3, monitoring and encouraging the resilience practice. The research instruments consisted of a demographic data questionnaire, and resilience and depressive program instruments, including a handbook and self-report. Research data were analyzed and displayed, providing percentage, mean, standard deviation, chi-square, independent t-test, paired t-test, and the repeated measures ANOVA.\u0000The findings showed a significant difference in depression by time alone (p = 0.001). However, there was no significant difference by group alone in depression (p = 0.969). This study revealed mean score on depression in the experimental group was not significantly lower than before entering the program at week 4 and week 8 (p = 0.870, p = 0.428). However, resilience showed difference in score over time between the experimental group and control group. There was a significant difference in resilience score by time alone (F = 10.523, p < 0.001).\u0000The results can contribute to guiding nurses to enhance decrease in depression in pregnant teenagers in the earlier first trimester in antenatal care units. Nurse or nurse midwife should be concerned about the potential for early detection in the prenatal period and provide appropriate interventions to teenage mothers in the postnatal period.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"391 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131585773","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}
Summative evidences on the criteria for user assessment of health apps are still limited. In order to determine an assessment method for mobile health apps, rigorous and appropriate criteria must be chosen. The aim of this study is to review the existing quality assessment criteria that are being used to assess the quality of mobile health apps focusing on users’ perspectives. In addition, a procedure for the quality assessment of health apps is also presented. A systematic review was conducted utilizing 5 databases; PubMed, ScienceDirect, Scopus, CENTRAL and IEEE Xplore from 2008 to 2017. Search terms were; “mHealth”, “Applications”, “iOS OR Android”, “smartphones”, “quality”, etc. Papers that assessed the quality of health apps by users were selected. The PRISMA guideline was followed to complete the list of final studies. Likewise, a data extraction form was based on the PICO framework. From 6,514 studies, 69 studies met the eligibility criteria. Four hundred and forty-one quality assessment criteria for users were classified into 15 domains: Ease of use, Usability, Aesthetics, Connectivity, Functionality, Information, User satisfaction, Acceptability, Error occurrence, Motivation, Engagement, Data management, Undesirable events, Credentials and Security and privacy. An “ease of use” domain was found common in the included studies. The 15 domains were suggested as criteria for further study of the quality assessment and development of mHealth apps. Moreover, five recommended steps were presented for future research of quality of mobile health apps.
{"title":"Quality Assessment Criteria for Mobile Health Apps: A Systematic Review","authors":"Wilasinee Hongsanun, S. Insuk","doi":"10.48048/WJST.2020.6482","DOIUrl":"https://doi.org/10.48048/WJST.2020.6482","url":null,"abstract":"Summative evidences on the criteria for user assessment of health apps are still limited. In order to determine an assessment method for mobile health apps, rigorous and appropriate criteria must be chosen. The aim of this study is to review the existing quality assessment criteria that are being used to assess the quality of mobile health apps focusing on users’ perspectives. In addition, a procedure for the quality assessment of health apps is also presented. \u0000A systematic review was conducted utilizing 5 databases; PubMed, ScienceDirect, Scopus, CENTRAL and IEEE Xplore from 2008 to 2017. Search terms were; “mHealth”, “Applications”, “iOS OR Android”, “smartphones”, “quality”, etc. Papers that assessed the quality of health apps by users were selected. The PRISMA guideline was followed to complete the list of final studies. Likewise, a data extraction form was based on the PICO framework. From 6,514 studies, 69 studies met the eligibility criteria. Four hundred and forty-one quality assessment criteria for users were classified into 15 domains: Ease of use, Usability, Aesthetics, Connectivity, Functionality, Information, User satisfaction, Acceptability, Error occurrence, Motivation, Engagement, Data management, Undesirable events, Credentials and Security and privacy. An “ease of use” domain was found common in the included studies. The 15 domains were suggested as criteria for further study of the quality assessment and development of mHealth apps. Moreover, five recommended steps were presented for future research of quality of mobile health apps.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116991536","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 present study aimed to evaluate the acute toxicity effect of cypermethrin contaminated aquatic ecosystems by using a 30 days post-hatching fry of Nile tilapia as a test model. The control and six test experiments, each comprising 10 animals, were repeated three times and evaluated with the static test method. The lethal concentrations at 50 % (LC50) and 70 % (LC70) for 96 h were determined using the probit analysis. Behavioural and histological changes were observed in fish exposed with cypermethrin at both 96 h LC50 and 96 h LC70. The values of 96 h LC50 and 96 h LC70 were estimated at 32.496 and 40.311 ppb, respectively. The affected fish exhibited the loss of equilibrium with erratic and darting swimming movements, hyperactivity, secretion of mucous and increasing rate of opercula activity. Severity of histopathological lesions were related to concentration levels and exposure times. The histological changes of gill tissues included the swelling of epithelial cells and the fusion of secondary lamella. An enlargement of sinusoids, pyknotic nuclei, vacuole formation and degeneration in hepatic parenchyma were observed in liver. The degeneration of glomerulus combining with oedema of renal tubule was also noticed in kidney. No alter lesion was seen on skin tissue. The results in the present study suggest that low levels of cypermethrin in the aquatic environment may alter adverse effect on growth and development in Nile tilapia.
本研究以尼罗罗非鱼鱼苗为试验模型，评价氯氰菊酯污染水生生态系统的急性毒性效应。对照实验和6个试验，每组10只动物，重复3次，采用静态试验法进行评价。采用概率分析法测定50% (LC50)和70% (LC70)作用96 h的致死浓度。在96 h LC50和96 h LC70时，观察了氯氰菊酯暴露鱼的行为和组织学变化。96 h LC50和96 h LC70分别为32.496和40.311 ppb。受影响的鱼表现出不平衡的丧失，游动运动不稳定，游动速度快，过度活跃，粘液分泌和包盖活动率增加。组织病理学病变的严重程度与浓度水平和暴露时间有关。鳃组织的组织学变化包括上皮细胞肿胀和继发片层融合。肝内可见肝窦增大、核固缩、空泡形成及肝实质变性。肾脏可见肾小球变性合并肾小管水肿。皮肤组织未见其他病变。本研究结果表明，低水平的氯氰菊酯可能会改变尼罗罗非鱼生长发育的不利影响。
{"title":"Acute Toxicity of Cypermethrin on Nile tilapia Fry","authors":"Anan Kenthao, W. Sirisarn, P. Jearranaiprepame","doi":"10.48048/wjst.2020.3815","DOIUrl":"https://doi.org/10.48048/wjst.2020.3815","url":null,"abstract":"The present study aimed to evaluate the acute toxicity effect of cypermethrin contaminated aquatic ecosystems by using a 30 days post-hatching fry of Nile tilapia as a test model. The control and six test experiments, each comprising 10 animals, were repeated three times and evaluated with the static test method. The lethal concentrations at 50 % (LC50) and 70 % (LC70) for 96 h were determined using the probit analysis. Behavioural and histological changes were observed in fish exposed with cypermethrin at both 96 h LC50 and 96 h LC70. The values of 96 h LC50 and 96 h LC70 were estimated at 32.496 and 40.311 ppb, respectively. The affected fish exhibited the loss of equilibrium with erratic and darting swimming movements, hyperactivity, secretion of mucous and increasing rate of opercula activity. Severity of histopathological lesions were related to concentration levels and exposure times. The histological changes of gill tissues included the swelling of epithelial cells and the fusion of secondary lamella. An enlargement of sinusoids, pyknotic nuclei, vacuole formation and degeneration in hepatic parenchyma were observed in liver. The degeneration of glomerulus combining with oedema of renal tubule was also noticed in kidney. No alter lesion was seen on skin tissue. The results in the present study suggest that low levels of cypermethrin in the aquatic environment may alter adverse effect on growth and development in Nile tilapia.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126944573","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}
Y. Yuliani, Bambang Tri Agung, M. Marwati, K. P. Candra
The gel strength of gelatin depends on its raw material. Fish gelatin shows a broad range of gel strengths. Giant featherback and mackerel bone gelatins have the gel strengths 220 and 38 Bloom, respectively. Here, we prepared roselle soft jelly candy using the single gelatin and mixtures gelatins from bovine, giant featherback, and mackerel sources. Roselle calyces extract has been used as a food additive to improve taste, aroma, and antioxidant content. The soft jelly candies (1.5 % w/v roselle extract and 12 % gelling agent) were prepared using three types of gelatin (giant featherback (GF), mackerel (M), and bovine (B)) in four mixtures (GF:B = 1:3, GF:B = 1:1, M:B = 1:3, and M:B = 1:1). This experiment was arranged in a completely randomized design with three replications for each treatment. Physico-chemical and sensory characteristics of the jelly candies were determined. The data were analyzed by ANOVA continued by the LSD test. The results showed that water content, pH, gel strength, hardness, rigidity, and hedonic quality (taste, color, texture, and overall performance) of the roselle soft jelly candies were affected by choice of gelatin, but not total reducing sugar. Roselle soft jelly candy made with giant featherback and bovine gelatin (1:3) mix was the most preferred by the panelists.
{"title":"Physico-Chemical Characteristics of Giant Featherback (Chitala lopis) and Mackerel (Scomberomorus commerson) Bone Gelatins and Their Potential as Gelling agents in Gel Mixtures for Roselle (Hibiscus sabdariffa L.) Soft Jelly Candies","authors":"Y. Yuliani, Bambang Tri Agung, M. Marwati, K. P. Candra","doi":"10.48048/wjst.2020.4559","DOIUrl":"https://doi.org/10.48048/wjst.2020.4559","url":null,"abstract":"The gel strength of gelatin depends on its raw material. Fish gelatin shows a broad range of gel strengths. Giant featherback and mackerel bone gelatins have the gel strengths 220 and 38 Bloom, respectively. Here, we prepared roselle soft jelly candy using the single gelatin and mixtures gelatins from bovine, giant featherback, and mackerel sources. Roselle calyces extract has been used as a food additive to improve taste, aroma, and antioxidant content. The soft jelly candies (1.5 % w/v roselle extract and 12 % gelling agent) were prepared using three types of gelatin (giant featherback (GF), mackerel (M), and bovine (B)) in four mixtures (GF:B = 1:3, GF:B = 1:1, M:B = 1:3, and M:B = 1:1). This experiment was arranged in a completely randomized design with three replications for each treatment. Physico-chemical and sensory characteristics of the jelly candies were determined. The data were analyzed by ANOVA continued by the LSD test. The results showed that water content, pH, gel strength, hardness, rigidity, and hedonic quality (taste, color, texture, and overall performance) of the roselle soft jelly candies were affected by choice of gelatin, but not total reducing sugar. Roselle soft jelly candy made with giant featherback and bovine gelatin (1:3) mix was the most preferred by the panelists.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126717065","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}
Blends of polypropylene (PP3) and polystyrene (PS) were studied and, their rheological behavior was determined and discussed in detail. The interfacial tension between the blend components was evaluated from the rheological data and the storage modulus by using two well-known models: Palierne model and Choi-Schowalter equation. The theoretical predictions were compared with experimental data obtained from PP3/PS blends. The obtained results showed that the Palierne model could predict the rheological and viscoelastic properties of the considered polymer blends. In addition, the interfacial tensions between PP3 and PS were evaluated and compared with those cited in the literature. It was also found that the Palierne model was more accurate than Choi-Schowalter one in determining the interfacial tension.
{"title":"Prediction of Rheological Properties and Interfacial Tension of Mixtures of Immiscible Polypropylene-Polystyrene (PP3/PS) Blends","authors":"Meriem Boudoukhani, N. Moulai-Mostefa, S. Hammani","doi":"10.48048/wjst.2020.3294","DOIUrl":"https://doi.org/10.48048/wjst.2020.3294","url":null,"abstract":"Blends of polypropylene (PP3) and polystyrene (PS) were studied and, their rheological behavior was determined and discussed in detail. The interfacial tension between the blend components was evaluated from the rheological data and the storage modulus by using two well-known models: Palierne model and Choi-Schowalter equation. The theoretical predictions were compared with experimental data obtained from PP3/PS blends. The obtained results showed that the Palierne model could predict the rheological and viscoelastic properties of the considered polymer blends. In addition, the interfacial tensions between PP3 and PS were evaluated and compared with those cited in the literature. It was also found that the Palierne model was more accurate than Choi-Schowalter one in determining the interfacial tension.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126577746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In education, students attempt to copy previous works and are relying on prepared solutions available on the Internet in order to meet their requirements. This action leads to plagiarism, which is becoming part of educational institutions’ concern to reduce growing academic dishonesty. With regards to the aforementioned issue, this study aims to design and develop a plagiarism checker capable of registering documents, granting access to users, and calculating the similarity between documents. Thus, the software was constructed using HTML, PHP, JavaScript, CSS, and MySQL. The developed system is composed of three main modules; the Document Search which enables users to browse documents, the Document Registration which enables the administrator to add and manage the stored documents, and the document Comparison, which serves as the system plagiarism detection mechanism. The algorithm Normalized Compression Distance was used to measure similarity and the Boyer-Moore Algorithm to highlight the suspected plagiarized document. Moreover, tests were conducted to determine if the system is functioning as expected and to measure the accuracy of the output produced by the system. The developed system was evaluated using the ISO 25010 software quality model in terms of Product Quality and was rated by one hundred respondents. The system obtained a mean of 4.70 which is equivalent to “excellent” in descriptive terms. This validates that the objectives of the study were met and achieved. This further indicates that the system was developed according to its desired functions and requirements.
{"title":"Theses and Capstone Projects Plagiarism Checker using Kolmogorov Complexity Algorithm","authors":"Marco Jr. Nañadiego Del Rosario, Julius A Sareno","doi":"10.14456/VOL17ISS3PP%P","DOIUrl":"https://doi.org/10.14456/VOL17ISS3PP%P","url":null,"abstract":"In education, students attempt to copy previous works and are relying on prepared solutions available on the Internet in order to meet their requirements. This action leads to plagiarism, which is becoming part of educational institutions’ concern to reduce growing academic dishonesty. With regards to the aforementioned issue, this study aims to design and develop a plagiarism checker capable of registering documents, granting access to users, and calculating the similarity between documents. Thus, the software was constructed using HTML, PHP, JavaScript, CSS, and MySQL. The developed system is composed of three main modules; the Document Search which enables users to browse documents, the Document Registration which enables the administrator to add and manage the stored documents, and the document Comparison, which serves as the system plagiarism detection mechanism. The algorithm Normalized Compression Distance was used to measure similarity and the Boyer-Moore Algorithm to highlight the suspected plagiarized document. Moreover, tests were conducted to determine if the system is functioning as expected and to measure the accuracy of the output produced by the system. The developed system was evaluated using the ISO 25010 software quality model in terms of Product Quality and was rated by one hundred respondents. The system obtained a mean of 4.70 which is equivalent to “excellent” in descriptive terms. This validates that the objectives of the study were met and achieved. This further indicates that the system was developed according to its desired functions and requirements.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125242262","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}
Chanida Kupradit, Sasidhorn Innok, Jirayus Woraratphoka, M. Ketudat-Cairns
Although there are a number of raw milk collection centers in Nakhon Ratchasima, there is a lack of information with regard to the process of isolation and characterization of foodborne pathogens in raw milk. Therefore, the purpose of this research was to investigate the prevalence and characterization of foodborne pathogens, including Bacillus cereus, Escherichia coli, Listeria monocytogenes, Salmonella spp. and Staphylococcus aureus from 33 raw milk samples from 9 different raw milk collection centers located in 8 districts in Nakhon Ratchasima, Thailand. This study was conducted from January to March 2016. Results revealed that the contaminations of L. monocytogenes and Salmonella spp. were not detected in any of the raw milk samples tested. The prevalence of B. cereus, E. coli, and S. aureus in raw milk samples was found to be 9 % (10 - 2.0 ×104 CFU/ml), 42.4 and 54 % (85 - 2.7 ×104 CFU/ml), respectively. The distribution of virulence genes was tested in B. cereus and S. aureus using gene specific primers by polymerase chain reaction. Out of the 29 analyzed coagulase-positive S. aureus isolates, 27 isolates (93 %) were positive for eap gene amplification and 14 isolates (48 %) showed amplicon of eap gene and all 5 enterotoxin genes, including seG, seGV, seI, seIV, and seM genes. All 8 B. cereus isolates tested showed positive PCR result with enterotoxin FM (entFM) gene but they showed negative with hemolysin gene (hblA and hblD genes) amplifications. It was inferred from these findings that bulk tank milk is a potential source of S. aureus and B. cereus in milk.
{"title":"Prevalence and Characterization of Pathogenic Bacteria in Bulk Tank Raw Milk, Thailand","authors":"Chanida Kupradit, Sasidhorn Innok, Jirayus Woraratphoka, M. Ketudat-Cairns","doi":"10.48048/wjst.2020.4177","DOIUrl":"https://doi.org/10.48048/wjst.2020.4177","url":null,"abstract":"Although there are a number of raw milk collection centers in Nakhon Ratchasima, there is a lack of information with regard to the process of isolation and characterization of foodborne pathogens in raw milk. Therefore, the purpose of this research was to investigate the prevalence and characterization of foodborne pathogens, including Bacillus cereus, Escherichia coli, Listeria monocytogenes, Salmonella spp. and Staphylococcus aureus from 33 raw milk samples from 9 different raw milk collection centers located in 8 districts in Nakhon Ratchasima, Thailand. This study was conducted from January to March 2016. Results revealed that the contaminations of L. monocytogenes and Salmonella spp. were not detected in any of the raw milk samples tested. The prevalence of B. cereus, E. coli, and S. aureus in raw milk samples was found to be 9 % (10 - 2.0 ×104 CFU/ml), 42.4 and 54 % (85 - 2.7 ×104 CFU/ml), respectively. The distribution of virulence genes was tested in B. cereus and S. aureus using gene specific primers by polymerase chain reaction. Out of the 29 analyzed coagulase-positive S. aureus isolates, 27 isolates (93 %) were positive for eap gene amplification and 14 isolates (48 %) showed amplicon of eap gene and all 5 enterotoxin genes, including seG, seGV, seI, seIV, and seM genes. All 8 B. cereus isolates tested showed positive PCR result with enterotoxin FM (entFM) gene but they showed negative with hemolysin gene (hblA and hblD genes) amplifications. It was inferred from these findings that bulk tank milk is a potential source of S. aureus and B. cereus in milk.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126826588","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}
Phatthilakorn Chamnanpuen, Veena Satitpatipan, S. Sirisattha, T. Muangman
This study focused on osteogenesis activities from Cyanobacteria (Nostoc species), including cytotoxicity, cell proliferation, cell differentiation and cell mineralization with osteoblast cell (MC3T3-E1). The four Nostoc species; N. parmelioides, N punctiforme, N. muscorum and N. paludosum were made axenic and cultured for a month. The ethanolic crude extracts were obtained by maceration extraction; the yield was in the range of 7.00 - 10.00 % (w/w). By using the TLC technique, it was observed that in all of the samples, there were phytochemical bands corresponding with β-carotene and chlorophyll a which were used as standard compounds. As a result, all crude extracts had no toxic effect on osteoblast cells after being incubated for 24 and 48 h with various concentrations (1 - 1,000 µg/mL), although they did not significantly promote osteoblast proliferation. In addition, it was found that 3 crude extracts (N. parmelioides, N punctiforme, and N. paludosum) also promoted osteoblast differentiation significantly after being induced for 9 days. Similarly, there was no difference between the relative cellular mineralization among treatment groups after being induced for 25 days. The potential ethanolic extracts on osteoblast cell differentiation were further partitioned by liquid-liquid partition chromatography (hexane, dichloromethane and aqueous fractions), and were analyzed for osteoblast differentiation with alkaline phosphatase (ALP) activity. All of hexane and dichloromethane fractions from N. parmelioides (181.72±6.75 % and 195.11±3.27 %), N punctiforme (194.34±2.36 % and 168.69±1.08 %), and N. paludosum (191.54±7.66 % and 167.12±9.46 %) had a significantly higher effect of ALP activity than their aqueous fractions. In conclusion, our data suggested that the nonpolar potential major compound, which might correspond with carotenoids (β-carotene, xanthophyll and chlorophyll a) from Nostoc species, exhibited positive effects on osteoblast differentiation by increasing the alkaline phosphatase enzyme.
本研究主要研究蓝藻(Nostoc)的成骨活性，包括细胞毒性、细胞增殖、细胞分化和成骨细胞(MC3T3-E1)矿化。四种Nostoc;将无性虫、点状无性虫、白色无性虫和白色无性虫无菌培养1个月。浸渍法提取乙醇粗提物;产率在7.00 ~ 10.00 % (w/w)之间。通过薄层色谱技术观察到，所有样品中均存在与β-胡萝卜素和叶绿素a对应的植物化学谱带，并将其作为标准化合物。结果表明，不同浓度(1 - 1000µg/mL)培养24和48 h后，所有粗提物对成骨细胞均无毒性作用，但对成骨细胞增殖无显著促进作用。此外，我们发现3种粗提物(parmelioides, N. punctiforme, N. paludosum)在诱导9天后也能显著促进成骨细胞分化。同样，在诱导25天后，各处理组之间的相对细胞矿化没有差异。利用液-液分配层析(正己烷、二氯甲烷和水相)对成骨细胞分化的乙醇提取物进行进一步分离，并利用碱性磷酸酶(ALP)活性对成骨细胞分化进行分析。其中，正己烷和二氯甲烷组分(分别为181.72±6.75%和195.11±3.27%)、刺状氮(分别为194.34±2.36%和168.69±1.08%)和白花氮(分别为191.54±7.66%和167.12±9.46%)对ALP活性的影响均显著高于水相组分。综上所述，我们的数据表明，非极性电位主要化合物可能与Nostoc物种中的类胡萝卜素(β-胡萝卜素、叶黄素和叶绿素a)相对应，通过增加碱性磷酸酶对成骨细胞分化有积极的影响。
{"title":"Effect of Cyanobacteria (Nostoc species) Extracts on Osteogenesis Activities","authors":"Phatthilakorn Chamnanpuen, Veena Satitpatipan, S. Sirisattha, T. Muangman","doi":"10.48048/wjst.2020.5350","DOIUrl":"https://doi.org/10.48048/wjst.2020.5350","url":null,"abstract":"This study focused on osteogenesis activities from Cyanobacteria (Nostoc species), including cytotoxicity, cell proliferation, cell differentiation and cell mineralization with osteoblast cell (MC3T3-E1). The four Nostoc species; N. parmelioides, N punctiforme, N. muscorum and N. paludosum were made axenic and cultured for a month. The ethanolic crude extracts were obtained by maceration extraction; the yield was in the range of 7.00 - 10.00 % (w/w). By using the TLC technique, it was observed that in all of the samples, there were phytochemical bands corresponding with β-carotene and chlorophyll a which were used as standard compounds. As a result, all crude extracts had no toxic effect on osteoblast cells after being incubated for 24 and 48 h with various concentrations (1 - 1,000 µg/mL), although they did not significantly promote osteoblast proliferation. In addition, it was found that 3 crude extracts (N. parmelioides, N punctiforme, and N. paludosum) also promoted osteoblast differentiation significantly after being induced for 9 days. Similarly, there was no difference between the relative cellular mineralization among treatment groups after being induced for 25 days. The potential ethanolic extracts on osteoblast cell differentiation were further partitioned by liquid-liquid partition chromatography (hexane, dichloromethane and aqueous fractions), and were analyzed for osteoblast differentiation with alkaline phosphatase (ALP) activity. All of hexane and dichloromethane fractions from N. parmelioides (181.72±6.75 % and 195.11±3.27 %), N punctiforme (194.34±2.36 % and 168.69±1.08 %), and N. paludosum (191.54±7.66 % and 167.12±9.46 %) had a significantly higher effect of ALP activity than their aqueous fractions. In conclusion, our data suggested that the nonpolar potential major compound, which might correspond with carotenoids (β-carotene, xanthophyll and chlorophyll a) from Nostoc species, exhibited positive effects on osteoblast differentiation by increasing the alkaline phosphatase enzyme.","PeriodicalId":255195,"journal":{"name":"Walailak Journal of Science and Technology (WJST)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126884910","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：