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Preliminary Studies of Cassava Leaves’ Ability to Remove Dyes from Water 木薯叶对水中染料去除率的初步研究
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2020-04-30 DOI: 10.5614/j.math.fund.sci.2020.52.1.5
Chairunnisa Chairunnisa, Y. Lisafitri
{"title":"Preliminary Studies of Cassava Leaves’ Ability to Remove Dyes from Water","authors":"Chairunnisa Chairunnisa, Y. Lisafitri","doi":"10.5614/j.math.fund.sci.2020.52.1.5","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2020.52.1.5","url":null,"abstract":"Low-cost adsorbents from cassava leaves (CLP) were prepared by simply washing the leaf powder with deionized water. The adsorption of methylene blue (MB) from the aqueous solution was measured in order to examine the adsorbent performance. The effect of the pH of the solution was studied by varying pH from 2 to 10. The kinetics of MB adsorption onto CLP followed the pseudo-second-order kinetic model with a k -value of 0.087907 g mg -1 min -1 and 0.094081 g mg -1 min -1 for CLP before and after washing, respectively. The adsorption isotherm for both adsorbents followed the Langmuir isotherm model with qm values of 178.5 mg g -1 and 243.9 mg g -1 . The existence of disturber ions was investigated by adding NaCl into the MB solutions at a variety of concentrations.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72376770","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}
引用次数: 1
A Mathematical Model to Study the Effects of Breastfeeding and Vaccination on Rotavirus Epidemics 研究母乳喂养和疫苗接种对轮状病毒流行影响的数学模型
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2020-04-30 DOI: 10.5614/j.math.fund.sci.2020.52.1.4
S. Shuaib, Pakwan Riyapan
{"title":"A Mathematical Model to Study the Effects of Breastfeeding and Vaccination on Rotavirus Epidemics","authors":"S. Shuaib, Pakwan Riyapan","doi":"10.5614/j.math.fund.sci.2020.52.1.4","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2020.52.1.4","url":null,"abstract":"In this article, we formulate and analyze a mathematical model including breastfeeding and vaccination to study the transmission dynamics of rotavirus epidemics. The model is divided into five compartmental classes, namely, the susceptible compartment S(t) ; the breastfeeding compartment M(t) ; the vaccinated compartment V(t) ; the infected compartment I(t) ; and the recovered compartment R(t) . To understand the threshold of infection, the basic reproduction number relating to breastfeeding and vaccination, denoted as R vm , is computed. The results show that if R vm 1, global asymptotic stability of the endemic equilibrium exists. Numerical simulations were carried out to support the model analysis and to examine the effects of breastfeeding and vaccination on rotavirus epidemics. The model fits well with real data to predict the infected population in real life. The analysis and numerical results of the model confirm that the combination of vaccination and breastfeeding is more effective in reducing the spread of rotavirus epidemics.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85577163","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}
引用次数: 3
Glycosaminoglycans Content and Type II Collagen Localization in Chondrogenic Differentiation of Adipose-Derived Mesenchymal Stem Cells Induced by L-Ascorbic Acid 2-Phosphate 糖胺聚糖含量和II型胶原定位在l -抗坏血酸2-磷酸诱导脂肪源间充质干细胞成软骨分化中的作用
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2020-04-30 DOI: 10.5614/j.math.fund.sci.2020.52.1.7
A. Barlian, N. L. W. E. Yanti
{"title":"Glycosaminoglycans Content and Type II Collagen Localization in Chondrogenic Differentiation of Adipose-Derived Mesenchymal Stem Cells Induced by L-Ascorbic Acid 2-Phosphate","authors":"A. Barlian, N. L. W. E. Yanti","doi":"10.5614/j.math.fund.sci.2020.52.1.7","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2020.52.1.7","url":null,"abstract":"L-ascorbic acid 2-phosphate (LAA) is known to induce chondrocyte differentiation. The objective of this study was to analyze the potency of LAA in chondrogenic differentiation of adipose-derived mesenchymal stem cells (ADSC) by analyzing the glycosaminoglycans (GAG) content and type II collagen (Coll2) localization. ADSC was characterized using flow cytometry and cultured in media containing various concentrations of LAA (0, 25, 50, 100 μg/mL) for 2, 3 and 4 weeks. Coll2 localization was analyzed by immunocytochemistry (ICC) using a confocal microscope. The quantification of GAG was performed by Alcian Blue staining and calcium deposition by Alizarin Red S staining. The results showed that ADSC was positive for mesenchymal stem cell (MSC) markers. Coll2 was localized in the cytoplasm and showed increasing abundance along with the increase of the LAA concentration. The highest intensity of Coll2 localization was shown in LAA 100 μg/mL. ADSC in LAA induction medium showed higher GAG content compared to the control group (LAA 0 μg/mL) (p < 0.05). The highest calcium deposit was shown by LAA 25 μg/mL after 4 weeks of culture (p < 0.05) and it decreased at higher concentrations. In conclusion, LAA 100 μg/mL is considered the optimum LAA concentration for chondrogenic differentiation.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88145644","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}
引用次数: 2
A New Type of Coincidence and Common Fixed-Point Theorems for Modified 𝛂-Admissible 𝓩-Contraction Via Simulation Function 通过模拟函数修正𝛂-Admissible𝓩-Contraction的一类新的重合和公共不动点定理
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2020-04-30 DOI: 10.5614/j.math.fund.sci.2020.52.1.3
Sahil Arora, Manoj Kumar, S. Mishra
{"title":"A New Type of Coincidence and Common Fixed-Point Theorems for Modified 𝛂-Admissible 𝓩-Contraction Via Simulation Function","authors":"Sahil Arora, Manoj Kumar, S. Mishra","doi":"10.5614/j.math.fund.sci.2020.52.1.3","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2020.52.1.3","url":null,"abstract":"In this manuscript, we introduce the concept of modified α-admissible contraction with the help of a simulation function and use this concept to establish some coincidence and common fixed-point theorems in metric space. An illustrative example that yields the main result is given. Also, several existing results within the frame of metric space are established. The main theorem was applied to derive the coincidence and common fixed-point results for α-admissible 𝒵-contraction.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84460869","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}
引用次数: 1
On Size Bipartite and Tripartite Ramsey Numbers for The Star Forest and Path on 3 Vertices 3点星林和路径的大小二部和三部Ramsey数
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2020-04-29 DOI: 10.5614/j.math.fund.sci.2020.52.1.1
Anie Lusiani, E. Baskoro, S. Saputro
{"title":"On Size Bipartite and Tripartite Ramsey Numbers for The Star Forest and Path on 3 Vertices","authors":"Anie Lusiani, E. Baskoro, S. Saputro","doi":"10.5614/j.math.fund.sci.2020.52.1.1","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2020.52.1.1","url":null,"abstract":"For simple graphs G and H the size multipartite Ramsey number mj ( G , H ) is the smallest natural number t such that any arbitrary red-blue coloring on the edges of Kjxt contains a red G or a blue H as a subgraph. We studied the size tripartite Ramsey numbers m 3( G , H ) where G=mK1,n  and H=P3 . In this paper, we generalize this result. We determine m3(G,H) where G is a star forest, namely a disjoint union of heterogeneous stars, and H=P3 . Moreover, we also determine m2(G,H) for this pair of graphs G and H .","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2020-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73413452","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}
引用次数: 3
One-sided Downward Control Chart for Monitoring the Multivariate Coefficient of Variation with VSSI Strategy 单侧向下控制图监测多变量变异系数的VSSI策略
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2020-04-28 DOI: 10.5614/j.math.fund.sci.2020.52.1.8
Xinying Chew, K. W. Khaw
{"title":"One-sided Downward Control Chart for Monitoring the Multivariate Coefficient of Variation with VSSI Strategy","authors":"Xinying Chew, K. W. Khaw","doi":"10.5614/j.math.fund.sci.2020.52.1.8","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2020.52.1.8","url":null,"abstract":"In recent years, control charts monitoring the coefficient of variation (CV), denoted as the ratio of the variance to the mean, is attracting significant attention due to its ability to monitor processes in which the process mean and process variance are not independent of each other. However, very few studies have been done on charts to monitor downward process shifts, which is important since downward process shifts show process improvement. In view of the importance of today’s competitive manufacturing environment, this paper proposes a one-sided chart to monitor the downward multivariate CV (MCV) with variable sample size and sampling interval (VSSI), i.e. the VSSI D MCV chart. This paper monitors the MCV as most industrial processes simultaneously monitor at least two or more quality characteristics, while the VSSI feature is incorporated, as it is shown that this feature brings about a significant improvement of the chart. A Markov chain approach was adopted for designing a performance measure of the proposed chart. The numerical comparison revealed that the proposed chart outperformed existing MCV charts. The implementation of the VSSI D MCV chart is illustrated with an example.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2020-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74033428","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}
引用次数: 8
Metal-Organic Frameworks Based on Zinc(II) and Benzene-1,3,5-Tricarboxylate Modified Graphite: Fabrication and Application as an Anode Material in Lithium-Ion Batteries 基于锌(II)和苯-1,3,5-三羧酸盐改性石墨的金属有机骨架:制备及其在锂离子电池负极材料中的应用
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2020-04-28 DOI: 10.5614/j.math.fund.sci.2020.52.1.6
W. Lestari, Wulan Cahya Inayah, F. Rahmawati, Larasati Larasati, A. Purwanto
{"title":"Metal-Organic Frameworks Based on Zinc(II) and Benzene-1,3,5-Tricarboxylate Modified Graphite: Fabrication and Application as an Anode Material in Lithium-Ion Batteries","authors":"W. Lestari, Wulan Cahya Inayah, F. Rahmawati, Larasati Larasati, A. Purwanto","doi":"10.5614/j.math.fund.sci.2020.52.1.6","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2020.52.1.6","url":null,"abstract":"This research was aimed at synthesizing metal-organic frameworks (MOFs) based on zinc(II) and a benzene-1,3,5-tricarboxylate (BTC) linker in combination with graphite as anode material in lithium-ion batteries. The MOFs were prepared using sonochemical and solvothermal methods, which led to different materials: [Zn 3 (BTC) 2 ·12H 2 O] (MOF 1) and [Zn(BTC)·H 2 O·3DMF] (MOF 2). The produced materials were characterized by powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric/differential thermal analysis (TG/DTA), and a battery analyzer. Refinement of the XRD data was performed using the Rietica and Le Bail method. Sharp and intense peaks indicated that the materials had a high degree of crystallinity. The morphology of the materials as analyzed by SEM was cubic, with an average crystal size of 8.377 ± 4.276 µm for MOF 1 and a larger size of 16.351 ± 3.683 µm for MOF 2. MOF 1 was thermally stable up to 378.7 °C while MOF 2 remained stable up to 341.8 °C, as demonstrated by thermogravimetric analysis. The employment of the synthesized materials as anode in a lithium ion battery was proved to yield higher specific capacity and cycle stability compared to those using a graphite anode. The lithium-ion battery with 5 wt% MOF 1 exhibited the highest performance with an efficiency of 97.28%, and charge and discharge specific capacities of 123.792 and 120.421 mAh/g, respectively.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2020-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82174447","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}
引用次数: 4
Purely data-driven exploration of COVID-19 pandemic after three months of the outbreak 在疫情爆发三个月后，对COVID-19大流行进行纯数据驱动的探索
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2020-04-10 DOI: 10.1101/2020.04.08.20057638
Saydaliev Hayot Berk, S. Kadyrov
{"title":"Purely data-driven exploration of COVID-19 pandemic after three months of the outbreak","authors":"Saydaliev Hayot Berk, S. Kadyrov","doi":"10.1101/2020.04.08.20057638","DOIUrl":"https://doi.org/10.1101/2020.04.08.20057638","url":null,"abstract":"It has been three months since the novel coronavirus (COVID-19) pandemic outbreak. Many research studies were carried to understand its epidemiological characteristics in the early phase of the disease outbreak. The current study is yet another contribution to better understand the disease properties by parameter estimation of mathematical SIR epidemic modeling. The authors use Johns Hopkins University dataset to estimate the basic reproduction number of COVID-19 for representative countries (Japan, Germany, Italy, France, and Netherlands) selected using cluster analysis. As a by-product, the authors estimate transmission, recovery, and death rates for each selected country and carry statistical tests to see if there are any significant differences.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2020-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86995923","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}
引用次数: 2
MHD Free Convective Flow along Vertical Oscillatory Plate with Radiative Heat Transfer in the Presence of Hall Current and Heat Source 在霍尔电流和热源存在下沿垂直振荡板的MHD自由对流辐射传热
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2019-12-31 DOI: 10.5614/j.math.fund.sci.2019.51.3.4
U. S. Rajput, Mohammad Shareef
{"title":"MHD Free Convective Flow along Vertical Oscillatory Plate with Radiative Heat Transfer in the Presence of Hall Current and Heat Source","authors":"U. S. Rajput, Mohammad Shareef","doi":"10.5614/j.math.fund.sci.2019.51.3.4","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2019.51.3.4","url":null,"abstract":"MHD free convective flow with oscillations of an infinite non-conducting vertical flat surface through a porous medium with Hall current in a rotating system was studied. The governing equations of the model were converted into dimensionless form. Analytical solutions for velocity and temperature were obtained with the help of the Laplace transform method. Graphs and tables are used in this paper to show the influence of various parameters on temperature, skin friction and velocity. It was observed that changes in plate oscillation, porous medium, radiation and Hall current have significant effects on fluid motion. Further, the skin friction near the surface is increased by the radiation parameter. The results obtained have large implications in the engineering and science fields.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87423927","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}
引用次数: 0
Optimal Scheduling Policy for a Multi-upgraded Software System under Fuzzy Environment 模糊环境下多升级软件系统的最优调度策略
IF 0.7
Journal of Mathematical and Fundamental Sciences Pub Date : 2019-12-31 DOI: 10.5614/j.math.fund.sci.2019.51.3.6
Adarsh Anand, Subhrata Das, Mohini Agarwal, V. Yadavalli
{"title":"Optimal Scheduling Policy for a Multi-upgraded Software System under Fuzzy Environment","authors":"Adarsh Anand, Subhrata Das, Mohini Agarwal, V. Yadavalli","doi":"10.5614/j.math.fund.sci.2019.51.3.6","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2019.51.3.6","url":null,"abstract":"Many reliability growth models related to the concept of multi-upgrading have recently been proposed. This concept has helped software developers to develop a competitive edge over competitors by regularly introducing their software upgrades in the market at the optimal moment. The software reliability literature offers many different release-time policies, both under crisp and fuzzy environment. This paper presents a generic model of a multi-upgraded software system. The optimal scheduling policy for software under a fuzzy environment was determined. The proposed model was examined on a real-life failure data set of four software releases. The results obtained are encouraging.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85778357","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}
引用次数: 2
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