Journal of Mathematical and Fundamental Sciences最新文献_第9页

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

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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":"17 1","pages":"81-97"},"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

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Journal of Mathematical and Fundamental Sciences Pub Date : 2020-04-10 DOI: 10.1101/2020.04.08.20057638

Saydaliev Hayot Berk, S. Kadyrov

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

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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

引用次数: 0

Effects of Conditioned Medium of Co-Culture IL-2 Induced NK Cells and Human Wharton’s Jelly Mesenchymal Stem Cells (hWJMSCs) on Apoptotic Gene Expression in a Breast Cancer Cell Line (MCF-7) IL-2诱导NK细胞与人华顿水母间充质干细胞(hWJMSCs)共培养条件培养基对乳腺癌细胞系MCF-7凋亡基因表达的影响

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Journal of Mathematical and Fundamental Sciences Pub Date : 2019-12-31 DOI: 10.5614/j.math.fund.sci.2019.51.3.1

W. Widowati, D. Jasaputra, Philips Onggowidjaja, S. Sumitro, M. A. Widodo, Ervi Afifah, Dwi Davidson Rihibiha, R. Rizal, A. Amalia, H. Kusuma, Harry Murti, I. Bachtiar

{"title":"Effects of Conditioned Medium of Co-Culture IL-2 Induced NK Cells and Human Wharton’s Jelly Mesenchymal Stem Cells (hWJMSCs) on Apoptotic Gene Expression in a Breast Cancer Cell Line (MCF-7)","authors":"W. Widowati, D. Jasaputra, Philips Onggowidjaja, S. Sumitro, M. A. Widodo, Ervi Afifah, Dwi Davidson Rihibiha, R. Rizal, A. Amalia, H. Kusuma, Harry Murti, I. Bachtiar","doi":"10.5614/j.math.fund.sci.2019.51.3.1","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2019.51.3.1","url":null,"abstract":"Breast cancer (BC) is the most prevalent type of cancer among women and one of the major causes of cancer mortality in women. Metastasis in breast cancer (BC) occurs due to immunosurveillance deficiency, including impairment of natural killer (NK) cell maturation. Conditioned medium (CM) from human Wharton’s jelly mesenchymal stem cells (hWJMSC-CM) is known to possess anticancer activity. The CM of co-culture of human recombinant IL-2 treated NK cells and hWJMSCs is expected to boost anticancer activity toward BC cells which can be analyzed from the effect of CM towards secretion of effector molecules and expression of BC cell apoptosis-related genes, and cytotoxic granules in human recombinant IL-2 treated NK (IL-2 NK) and hWJMSCs (IL-2 hWJMSCs). TNF-α, IFN-γ, perforin, granzyme were measured by ELISA, while the inhibition of cell proliferation was measured by MTS assay and BC cell apoptosis by flow cytometry and apoptotic gene expression by RTPCR. CM from co-cultured hWJMSCs and IL-2 NK cells inhibited NK and BC cell proliferation, increased expression of Bax and p53 and decreased the number of Bcl-2 in BC cells. In conclusion, CM of co-culture IL-2 treated NK cells and hWJMSCs induce apoptosis in BC cells as indicated by increased Bax and p53 expression and decreased Bcl-2 expression.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":"580 1","pages":"205-224"},"PeriodicalIF":0.7,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77368736","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: 9

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

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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

引用次数: 2

Growth of Human Dermal Fibroblasts on Polyvinyl Alcohol-Silk Fibroin Nanofiber Scaffold 聚乙烯醇-丝素纳米纤维支架上人真皮成纤维细胞的生长

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Journal of Mathematical and Fundamental Sciences Pub Date : 2019-12-31 DOI: 10.5614/j.math.fund.sci.2019.51.3.7

Regina Giovanni, U. A. Wibowo, H. Judawisastra, A. Barlian

{"title":"Growth of Human Dermal Fibroblasts on Polyvinyl Alcohol-Silk Fibroin Nanofiber Scaffold","authors":"Regina Giovanni, U. A. Wibowo, H. Judawisastra, A. Barlian","doi":"10.5614/j.math.fund.sci.2019.51.3.7","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2019.51.3.7","url":null,"abstract":"Skin tissue engineering is a developing technology to heal severe wounds. Combining polyvinyl alcohol (PVA) and silk fibroin (SF) nanofibers is a promising method of developing a skin scaffold because the resulting structure mimics collagen fibers. The aim of this research was to study the growth of human dermal fibroblasts (HDF) on a polyvinyl alcohol-silk fibroin (PVA-SF) nanofiber scaffold that was produced by electrospinning. Morphological characterization and chemical analysis of the scaffold were performed by scanning electron microscopy (SEM), Fourier transform infrared spectrophotometry (FTIR), and contact angle measurement. The biocompatibility of the scaffold was tested by MTT cytotoxicity assay, SEM analysis, adherence ratio calculation, and analysis of the HDF growth curve for 9 days. The FTIR results confirmed the presence of SF and PVA. The average fiber diameter and pore size of the PVA scaffold were greater than those of the PVA-SF scaffold. Both scaffolds had hydrophilic properties and were not cytotoxic. Thus, HDF can attach and grow on both types of scaffold better than HDF seeded on a polystyrene plate. In conclusion, the addition of SF to the PVA nanofibers caused bead formation, which affected the substrate topography, decreased hydrophilicity and also decreased the fiber diameter and pore size in the nanofiber scaffold compared to the PVA nanofiber scaffold without SF addition. SF addition increases cell attachment to the nanofiber scaffold and has potential to facilitate HDF cell growth.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":"24 1","pages":"294-308"},"PeriodicalIF":0.7,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73679830","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

Donsker’s Delta Functional of Stochastic Processes with Memory 有记忆随机过程的Donsker函数

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Journal of Mathematical and Fundamental Sciences Pub Date : 2019-12-31 DOI: 10.5614/j.math.fund.sci.2019.51.3.5

H. Suryawan

引用次数: 2

B-emission Stars in Southern Sky Observed in Bosscha Observatory: Spectroscopic Study of Hα Spectral Line Variability 博沙天文台观测到的南方天空b发射星:Hα谱线变异性的光谱研究

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Journal of Mathematical and Fundamental Sciences Pub Date : 2019-12-31 DOI: 10.5614/j.math.fund.sci.2019.51.3.3

A. Aprilia, H. Malasan, G. E. Ramadhania, A. T. P. Jatmiko, M. Irfan, D. G. Ramadhan, A. N. Istiqomah, E. I. Akbar

引用次数: 0

Cytotoxic Activities of Extracts and Isolated Compounds of Some Potential Sumatran Medicinal Plants against MCF-7 and HSC-3 Cell Lines 一些苏门答腊潜在药用植物提取物和分离化合物对MCF-7和HSC-3细胞系的细胞毒活性

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Journal of Mathematical and Fundamental Sciences Pub Date : 2019-12-31 DOI: 10.5614/j.math.fund.sci.2019.51.3.2

Meiridha Mutiara Andania, F. Ismed, M. Taher, S. Ichwan, A. Bakhtiar, D. Arbain

{"title":"Cytotoxic Activities of Extracts and Isolated Compounds of Some Potential Sumatran Medicinal Plants against MCF-7 and HSC-3 Cell Lines","authors":"Meiridha Mutiara Andania, F. Ismed, M. Taher, S. Ichwan, A. Bakhtiar, D. Arbain","doi":"10.5614/j.math.fund.sci.2019.51.3.2","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2019.51.3.2","url":null,"abstract":"In continuation of our study of Sumatran plants and the bioactivity of their constituents, Stereocaulon halei Lamb (Stereocaulaceae) was extracted and isolated to obtain atranorin ( 1 ), lobaric acid ( 6 ), and methyl- β -orcinol carboxylate ( 9 ). We also prepared methanolic extracts of some Sumatran medicinal plants, i.e. Alpinia denticulata, Alpinia malaccensis, Alpinia submutica, Curcuma zedoaria, Centella asiatia , Mangifera indica, Piper crocatum, Mussaenda frondosa , together with previously isolated compounds, i.e. crocatin A ( 2 ) and crocatin B ( 3 ) from P. crocatum , curcumin ( 4 ) from Curcuma longa , demethoxymatteucinol ( 5 ) from Sphaerostephanos polycarpus , mangiferin ( 7 ) from M. indica , methyl caffeate ( 8 ) from Balanophora elongata , tiliroside ( 10 ) from Guazuma ulmifolia , and usnic acid from Usnea sp ( 11 ). These extracts and compounds were tested for their cytotoxicity against MCF-7 and HSC-3 cell lines by MTT assay (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide). It was found that the IC 50 value of atranorin ( 1 ), lobaric acid ( 6 ), methyl- β -orcinol carboxylate ( 9 ), and methanolic extract of A. submutica towards the MCF-7 cell line was 208.20 µM, 172.05 µM, 382.60 µM and 70.95 µg/mL, respectively. The IC 50 value of lobaric acid ( 6 ) and methyl-β-orcinol carboxylate ( 9 ) against the HSC-3 cell line was 88.92 µM and 260.09 µM, respectively. The other extracts did not show significant cytotoxicity.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":"6 1","pages":"225-242"},"PeriodicalIF":0.7,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84119065","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

Polyelectrolyte Complex (PEC) of the Alginate-Chitosan Membrane for Immobilizing Urease 海藻酸盐-壳聚糖膜固定化脲酶的聚电解质复合物

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Journal of Mathematical and Fundamental Sciences Pub Date : 2019-12-20 DOI: 10.5614/j.math.fund.sci.2019.51.3.8

D. Hermanto, M. Mudasir, D. Siswanta, B. Kuswandi, N. Ismillayli

引用次数: 17