M. Eso, Metta Kuning, Hilary Green, A. Ueranantasun, Somporn Chuai-Aree
The Southern Oscillation Index (SOI) has been used as a predictor of variables associated with climatic data, such as rainfall and temperature, and is related to the El Nino and La Nina phenomena, also called the El Nino Southern Oscillation (ENSO). The present study aims to describe the characteristics of the SOI between 1876 and 2014 using statistical methods. The graph of the cumulative monthly SOI in the period 1876 - 2014 shows that the data can be divided into 4 periods. The first period, from 1876 to 1919, shows no trend. An increasing trend is apparent in the second period from 1920 until 1975, while a decreasing trend is apparent in the third period, 1976 to 1995. In the last period, between 1996 and 2014, the SOI appears fairly stable. In order to investigate those trends, the linear regression and autoregressive (AR) model have been fitted. For the linear regression model, the outcome, SOI, is regressed against boxcar function, where the functions model the trends of the SOI. An autoregressive process is used to account for serial correlation in the residuals. The conclusion is that the SOI is quite similar to a random noise process.
{"title":"The Southern Oscillation Index as a Random Walk","authors":"M. Eso, Metta Kuning, Hilary Green, A. Ueranantasun, Somporn Chuai-Aree","doi":"10.14456/VOL13ISS9PP%P","DOIUrl":"https://doi.org/10.14456/VOL13ISS9PP%P","url":null,"abstract":"The Southern Oscillation Index (SOI) has been used as a predictor of variables associated with climatic data, such as rainfall and temperature, and is related to the El Nino and La Nina phenomena, also called the El Nino Southern Oscillation (ENSO). The present study aims to describe the characteristics of the SOI between 1876 and 2014 using statistical methods. The graph of the cumulative monthly SOI in the period 1876 - 2014 shows that the data can be divided into 4 periods. The first period, from 1876 to 1919, shows no trend. An increasing trend is apparent in the second period from 1920 until 1975, while a decreasing trend is apparent in the third period, 1976 to 1995. In the last period, between 1996 and 2014, the SOI appears fairly stable. In order to investigate those trends, the linear regression and autoregressive (AR) model have been fitted. For the linear regression model, the outcome, SOI, is regressed against boxcar function, where the functions model the trends of the SOI. An autoregressive process is used to account for serial correlation in the residuals. The conclusion is that the SOI is quite similar to a random noise process.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"13 1","pages":"317-327"},"PeriodicalIF":0.0,"publicationDate":"2015-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680805","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}
W. C. Pensuksan, S. Lertmaharit, V. Lohsoonthorn, T. Rattananupong, Thanawan Sonkprasert, B. Gelaye, M. Williams
We conducted this study to fill the noted gap in the available literature by evaluating the prevalence of poor sleep quality in this understudied population and to explore the relationship between sleep quality and psychological problems among undergraduates in Thailand. This study used a cross-sectional survey. Self-administrated questionnaires included the Pittsburgh Sleep Quality Index (PSQI), the Epworth Sleepiness Scale, the Depression, Anxiety and Stress Scale and the Thai General Health Questionnaire. The study group included 1,055 undergraduates, aged 18-25 years. The prevalence of poor sleep quality was 42.4%. Students classified as poor quality sleepers reported significantly more psychological problems, indicating a linear trend of progressively worse global sleep quality associated with greater mood and anxiety symptomatology. Prospective studies that include objective measures of sleep duration and quality are needed to more fully develop focused health promotion strategies for Southeast Asian undergraduates.
{"title":"Relationship between Poor Sleep Quality and Psychological Problems among Undergraduate Students in the Southern Thailand","authors":"W. C. Pensuksan, S. Lertmaharit, V. Lohsoonthorn, T. Rattananupong, Thanawan Sonkprasert, B. Gelaye, M. Williams","doi":"10.14456/VOL13ISS3PP%P","DOIUrl":"https://doi.org/10.14456/VOL13ISS3PP%P","url":null,"abstract":"We conducted this study to fill the noted gap in the available literature by evaluating the prevalence of poor sleep quality in this understudied population and to explore the relationship between sleep quality and psychological problems among undergraduates in Thailand. This study used a cross-sectional survey. Self-administrated questionnaires included the Pittsburgh Sleep Quality Index (PSQI), the Epworth Sleepiness Scale, the Depression, Anxiety and Stress Scale and the Thai General Health Questionnaire. The study group included 1,055 undergraduates, aged 18-25 years. The prevalence of poor sleep quality was 42.4%. Students classified as poor quality sleepers reported significantly more psychological problems, indicating a linear trend of progressively worse global sleep quality associated with greater mood and anxiety symptomatology. Prospective studies that include objective measures of sleep duration and quality are needed to more fully develop focused health promotion strategies for Southeast Asian undergraduates.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"13 1","pages":"235-242"},"PeriodicalIF":0.0,"publicationDate":"2015-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680484","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}
Life cycle assessment (LCA) was applied to evaluate environmental impacts contributed by 2 community composting systems, consisting of powder and granular compost production. The main raw materials of these composts were waste from agricultural and agro industrial activities, including animal manures, and solid waste from palm oil mills and rice mills. Data from field operations of both of the composting systems were collected and analyzed. Both composting systems were classified into 5 sub systems, consisting of raw material collection, composting process, electricity consumption, material transfer, and distribution of the compost product to consumers. Impact assessments of both composting systems revealed that the composting process sub system was the main contributor on impact categories of acidification potential (AP), eutrophication potential (EP), global warming potential (GWP), and photochemical oxidation potential (POP), while on human toxicity potential (HTP) the distribution sub system was the main contributor. In comparing both systems, it was found that granular compost systems contributed a higher impact than powder compost systems, at 1.1 times on GWP, while the remaining sub systems had almost similar impacts. In order to improve composting systems, it is recommended that compost blanket and fuel substitution be applied, to enable gaseous emission reduction to the composting process and transportation operations. doi: 10.14456/WJST.2016.21
{"title":"Environmental Impact Evaluation of Community Composting by Using Life Cycle Assessment: A Case Study Based on Types of Compost Product Operations","authors":"R. Aziz, P. Chevakidagarn, S. Danteravanich","doi":"10.14456/VOL13ISS4PP","DOIUrl":"https://doi.org/10.14456/VOL13ISS4PP","url":null,"abstract":"Life cycle assessment (LCA) was applied to evaluate environmental impacts contributed by 2 community composting systems, consisting of powder and granular compost production. The main raw materials of these composts were waste from agricultural and agro industrial activities, including animal manures, and solid waste from palm oil mills and rice mills. Data from field operations of both of the composting systems were collected and analyzed. Both composting systems were classified into 5 sub systems, consisting of raw material collection, composting process, electricity consumption, material transfer, and distribution of the compost product to consumers. Impact assessments of both composting systems revealed that the composting process sub system was the main contributor on impact categories of acidification potential (AP), eutrophication potential (EP), global warming potential (GWP), and photochemical oxidation potential (POP), while on human toxicity potential (HTP) the distribution sub system was the main contributor. In comparing both systems, it was found that granular compost systems contributed a higher impact than powder compost systems, at 1.1 times on GWP, while the remaining sub systems had almost similar impacts. In order to improve composting systems, it is recommended that compost blanket and fuel substitution be applied, to enable gaseous emission reduction to the composting process and transportation operations. doi: 10.14456/WJST.2016.21","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"13 1","pages":"221-233"},"PeriodicalIF":0.0,"publicationDate":"2015-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680501","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 rheological behavior of polystyrene (PS)/low density polyethylene (LDPE) blends have been investigated. Blends with 10, 20 and 30 wt% LDPE were prepared using a co-rotating twin-screw extruder at a melt mixing temperature of 180°C. SEM micrographs revealed that all blends exhibited droplet-type dispersion morphology. Rheological measurements were performed at the same temperature as the mixing temperature. The complex viscosity of the blends laid between those of the PS and the LDPE and decreased with increasing LDPE concentration. The plots of tand of blends with 10 and 20 wt% LDPE suggested that the elasticity of these blends was comparable to that of the pure PS. By contrast, the elasticity behavior of the blend with 30 wt% LDPE was shown to be similar to that of LDPE. Palierne model predictions were in very good agreement with the experimental data for the blends having 10 and 20 wt% LDPE. For the 30 wt% LDPE blend, agreement with the prediction and the experimental data was not as good. Within the frequency range of the rheological measurements, the second plateau at low frequency which results from an increase of the elasticity was not observed in any of the blends studied. This is expected to be due to the long relaxation times of the relatively large LDPE droplets of these blends. doi: 10.14456/WJST.2015.97
{"title":"Rheological Behavior of Immiscible PS/LDPE Blends: A Comparative Study of the Palierne Emulsion Model","authors":"Chatchai Kunyawut, H. E. Hermes","doi":"10.14456/VOL13ISS1PP","DOIUrl":"https://doi.org/10.14456/VOL13ISS1PP","url":null,"abstract":"The rheological behavior of polystyrene (PS)/low density polyethylene (LDPE) blends have been investigated. Blends with 10, 20 and 30 wt% LDPE were prepared using a co-rotating twin-screw extruder at a melt mixing temperature of 180°C. SEM micrographs revealed that all blends exhibited droplet-type dispersion morphology. Rheological measurements were performed at the same temperature as the mixing temperature. The complex viscosity of the blends laid between those of the PS and the LDPE and decreased with increasing LDPE concentration. The plots of tand of blends with 10 and 20 wt% LDPE suggested that the elasticity of these blends was comparable to that of the pure PS. By contrast, the elasticity behavior of the blend with 30 wt% LDPE was shown to be similar to that of LDPE. Palierne model predictions were in very good agreement with the experimental data for the blends having 10 and 20 wt% LDPE. For the 30 wt% LDPE blend, agreement with the prediction and the experimental data was not as good. Within the frequency range of the rheological measurements, the second plateau at low frequency which results from an increase of the elasticity was not observed in any of the blends studied. This is expected to be due to the long relaxation times of the relatively large LDPE droplets of these blends. doi: 10.14456/WJST.2015.97","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"12 1","pages":"1157-1169"},"PeriodicalIF":0.0,"publicationDate":"2015-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680425","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}
Information Technology Service Management (ITSM) is a strategy that serves IT operations-related activities and the interactions of IT technical personnel with business processes. ITSM is a relatively new discipline. Nowadays, it is growing and is increasingly being by many industries because of changing business trends, such as outsourcing and demand for the accordance of computer resources and business perspectives. ITSM is essential in a business organization because it accounts for 70 - 90 % of the total cost of IT ownership. However, most IT, MIS, Computer Science, or Business schools ignore ITSM courses. There has been little academic contribution to this subject. Therefore, this paper provides a background on ITSM and the concepts it contributes to education. doi: 10.14456/WJST.2015.56
{"title":"Information Technology Service Management (ITSM) in Education","authors":"Tapanee Treeratanaporn","doi":"10.14456/VOL12ISS11PP","DOIUrl":"https://doi.org/10.14456/VOL12ISS11PP","url":null,"abstract":"Information Technology Service Management (ITSM) is a strategy that serves IT operations-related activities and the interactions of IT technical personnel with business processes. ITSM is a relatively new discipline. Nowadays, it is growing and is increasingly being by many industries because of changing business trends, such as outsourcing and demand for the accordance of computer resources and business perspectives. ITSM is essential in a business organization because it accounts for 70 - 90 % of the total cost of IT ownership. However, most IT, MIS, Computer Science, or Business schools ignore ITSM courses. There has been little academic contribution to this subject. Therefore, this paper provides a background on ITSM and the concepts it contributes to education. doi: 10.14456/WJST.2015.56","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"12 1","pages":"739-747"},"PeriodicalIF":0.0,"publicationDate":"2015-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680093","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}
By using exp(-Phi)-expansion method, abundant exact traveling wave solutions for the fifth order (1+1)-dimensional Kaup-Keperschmidt equation have been obtained in a uniform way. The obtained solutions in this work are imperative and significant for the explanation of some practical physical phenomena. It is shown that the exp(-Phi) -expansion method together with the first order ordinary differential equation, provides a progress mathematical tool for solving nonlinear partial differential equations. Numerical results, together with graphical representation, explicitly reveal the complete reliability and high efficiency of the proposed algorithm. doi: 10.14456/WJST.2015.89 Normal 0 false false false EN-US X-NONE TH /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Angsana New";}
{"title":"Traveling Wave Solutions for Fifth Order (1+1)-Dimensional Kaup-Keperschmidt Equation with the Help of Exp(-Phi)-Expansion Method","authors":"H. Roshid, Md. Nur Alam, M. Akbar","doi":"10.14456/VOL12ISS7PP","DOIUrl":"https://doi.org/10.14456/VOL12ISS7PP","url":null,"abstract":"By using exp(-Phi)-expansion method, abundant exact traveling wave solutions for the fifth order (1+1)-dimensional Kaup-Keperschmidt equation have been obtained in a uniform way. The obtained solutions in this work are imperative and significant for the explanation of some practical physical phenomena. It is shown that the exp(-Phi) -expansion method together with the first order ordinary differential equation, provides a progress mathematical tool for solving nonlinear partial differential equations. Numerical results, together with graphical representation, explicitly reveal the complete reliability and high efficiency of the proposed algorithm. doi: 10.14456/WJST.2015.89 Normal 0 false false false EN-US X-NONE TH /* Style Definitions */ \u0000 table.MsoNormalTable \u0000 {mso-style-name:\"Table Normal\"; \u0000 mso-tstyle-rowband-size:0; \u0000 mso-tstyle-colband-size:0; \u0000 mso-style-noshow:yes; \u0000 mso-style-priority:99; \u0000 mso-style-qformat:yes; \u0000 mso-style-parent:\"\"; \u0000 mso-padding-alt:0cm 5.4pt 0cm 5.4pt; \u0000 mso-para-margin:0cm; \u0000 mso-para-margin-bottom:.0001pt; \u0000 mso-pagination:widow-orphan; \u0000 font-size:10.0pt; \u0000 font-family:\"Times New Roman\",\"serif\"; \u0000 mso-fareast-font-family:\"Times New Roman\"; \u0000 mso-bidi-font-family:\"Angsana New\";}","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"12 1","pages":"1063-1073"},"PeriodicalIF":0.0,"publicationDate":"2015-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680286","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 the area of Directly-Observed Treatment (DOT), one of 5 essential elements of Directly-Observed Treatment, Short-course (DOTS)- the internationally accepted strategy to combat tuberculosis (TB) promoted by the World Health Organization (WHO) - its usefulness has been continuously debated. Many researchers have tried to conduct randomized controlled trials (RCT) to explore its effectiveness. The results have always led to the conclusion that DOT and self-administration (SA) could produce the same treatment outcomes. However, RCT should be conducted under ideal conditions to develop the efficacy of TB drug regimens, and it may not be necessary for it to be conducted in the field under routine circumstances to find out the effectiveness. Instead of RCT, effective management is needed in the fields, both at program level and at individual level, to produce TB treatment outcomes that come close to the efficacy of TB drug regimens. doi: 10.14456/WJST.2015.70
{"title":"TB Treatment with DOT: RCT vs. Effective Program Management","authors":"Phanchai Rattanasuwan","doi":"10.14456/VOL12ISS5PP","DOIUrl":"https://doi.org/10.14456/VOL12ISS5PP","url":null,"abstract":"In the area of Directly-Observed Treatment (DOT), one of 5 essential elements of Directly-Observed Treatment, Short-course (DOTS)- the internationally accepted strategy to combat tuberculosis (TB) promoted by the World Health Organization (WHO) - its usefulness has been continuously debated. Many researchers have tried to conduct randomized controlled trials (RCT) to explore its effectiveness. The results have always led to the conclusion that DOT and self-administration (SA) could produce the same treatment outcomes. However, RCT should be conducted under ideal conditions to develop the efficacy of TB drug regimens, and it may not be necessary for it to be conducted in the field under routine circumstances to find out the effectiveness. Instead of RCT, effective management is needed in the fields, both at program level and at individual level, to produce TB treatment outcomes that come close to the efficacy of TB drug regimens. doi: 10.14456/WJST.2015.70","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"12 1","pages":"581-585"},"PeriodicalIF":0.0,"publicationDate":"2015-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680203","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}
Here, an extended, ( G' / G )-expansion method with a computerized symbolic computation is used for constructing the exact travelling wave solutions for isothermal magnetostatic atmospheres equations. These equations depend on arbitrary functions that must be specified with choices of the different choice of the different arbitrary functions. The proposed method has been successfully used to obtain some exact travelling wave solutions for the Liouville and sinh-Poisson equations. The obtained travelling wave solutions are expressed by hyperbolic, triangular and exponential function. The solutions obtained via the propose method have many potential applications in physics. doi: 10.14456/WJST.2015.42
{"title":"New Exact Solutions for Isothermal Magnetostatic Atmosphere Equations","authors":"M. Attia, A. Elhanbaly, M. A. Abdou","doi":"10.14456/VOL12ISS6PP","DOIUrl":"https://doi.org/10.14456/VOL12ISS6PP","url":null,"abstract":"Here, an extended, ( G' / G )-expansion method with a computerized symbolic computation is used for constructing the exact travelling wave solutions for isothermal magnetostatic atmospheres equations. These equations depend on arbitrary functions that must be specified with choices of the different choice of the different arbitrary functions. The proposed method has been successfully used to obtain some exact travelling wave solutions for the Liouville and sinh-Poisson equations. The obtained travelling wave solutions are expressed by hyperbolic, triangular and exponential function. The solutions obtained via the propose method have many potential applications in physics. doi: 10.14456/WJST.2015.42","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"12 1","pages":"961-973"},"PeriodicalIF":0.0,"publicationDate":"2014-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680275","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}
A theoretical method based on various existing process models has been developed for the performance evaluation of a compression ignition engine by using diesel and Mahua oil as an input fuel. Experimental evaluations of Mahua oil methyl ester/diesel along with diethyl ether were tested on a single cylinder naturally-aspirated indirect-injection diesel engine. The purpose of using diethyl ether with diesel/biodiesel is to control the emission from the diesel engine and to improve its performance. The effect of test fuels at different volumetric proportion and loads are also analyzed on the engine performance and emission. The comparisons of theoretical and experimental results are discussed. Engine performance characteristics predicted by this model are in closer approximation to that of experimental results. Engineering equation solver has been used to validate the model with the experimental results. doi: 10.14456/WJST.2015.25
{"title":"Experimental analysis and energetic evaluation for Mahua oil methyl ester with diethyl ether.","authors":"Bhanu Pratap Singh, A. Sharma","doi":"10.14456/VOL12ISS10PP","DOIUrl":"https://doi.org/10.14456/VOL12ISS10PP","url":null,"abstract":"A theoretical method based on various existing process models has been developed for the performance evaluation of a compression ignition engine by using diesel and Mahua oil as an input fuel. Experimental evaluations of Mahua oil methyl ester/diesel along with diethyl ether were tested on a single cylinder naturally-aspirated indirect-injection diesel engine. The purpose of using diethyl ether with diesel/biodiesel is to control the emission from the diesel engine and to improve its performance. The effect of test fuels at different volumetric proportion and loads are also analyzed on the engine performance and emission. The comparisons of theoretical and experimental results are discussed. Engine performance characteristics predicted by this model are in closer approximation to that of experimental results. Engineering equation solver has been used to validate the model with the experimental results. doi: 10.14456/WJST.2015.25","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"12 1","pages":"311-324"},"PeriodicalIF":0.0,"publicationDate":"2014-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680521","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}
Qualitative and quantitative analysis of phytochemical constituents was done on leaves and leaf’s callus of Ficus deltoidea Jack var. kunstleri (King) Corner. Tannins, phlobatannins, saponins, flavonoids, steroids, terpenoids, alkaloids, anthraquinones and polyphenols were present in the leaves and callus cultured on Murashige and Skoog (1962) media supplemented with 0.8 mg/L 2,4-D + 0.7 mg/L Kinetin (KIN). Meanwhile, cardiac glycosides only exist in the leaves but not in the callus tissue. Quantitative analysis showed that alkaloids, saponins, phenols, flavonoids and tannins exist in both samples but in lower amounts for the callus tissue. The significance of the phytochemical constituents with respect to the role of this plant in traditional medicine treatment and the future prospect for callus in the production of secondary metabolites is discussed. doi: 10.14456/WJST.2015.86
对三角榕(Ficus deltoidea Jack var. kunstleri, King) Corner叶片及其愈伤组织的化学成分进行了定性和定量分析。在Murashige和Skoog(1962)添加0.8 mg/L 2,4- d + 0.7 mg/L Kinetin (KIN)的培养基上培养的叶片和愈伤组织中存在单宁、白丹宁、皂苷、黄酮类、类固醇、萜类、生物碱、蒽醌类和多酚类物质。心苷只存在于叶片中，而不存在于愈伤组织中。定量分析表明，两种样品中均含有生物碱、皂苷、酚类、黄酮类和单宁，但愈伤组织中含量较低。讨论了该植物化学成分在传统药物治疗中的意义以及愈伤组织在次生代谢产物生产中的前景。doi: 10.14456 / WJST.2015.86
{"title":"Phytochemical Constituents in Leaves and Callus of Ficus deltoidea Jack var. Kunstleri (King) Corner","authors":"Zakiah Musapha, H. Harun","doi":"10.14456/VOL12ISS4PP","DOIUrl":"https://doi.org/10.14456/VOL12ISS4PP","url":null,"abstract":"Qualitative and quantitative analysis of phytochemical constituents was done on leaves and leaf’s callus of Ficus deltoidea Jack var. kunstleri (King) Corner. Tannins, phlobatannins, saponins, flavonoids, steroids, terpenoids, alkaloids, anthraquinones and polyphenols were present in the leaves and callus cultured on Murashige and Skoog (1962) media supplemented with 0.8 mg/L 2,4-D + 0.7 mg/L Kinetin (KIN). Meanwhile, cardiac glycosides only exist in the leaves but not in the callus tissue. Quantitative analysis showed that alkaloids, saponins, phenols, flavonoids and tannins exist in both samples but in lower amounts for the callus tissue. The significance of the phytochemical constituents with respect to the role of this plant in traditional medicine treatment and the future prospect for callus in the production of secondary metabolites is discussed. doi: 10.14456/WJST.2015.86","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"12 1","pages":"431-439"},"PeriodicalIF":0.0,"publicationDate":"2014-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66680134","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：