Journal of Mathematical and Fundamental Sciences最新文献_第2页

Applying Fluorescence Dissolved Organic Matter Spectra and Phytoplankton Biology Index for Assessing Urban River Quality 应用荧光溶解有机质光谱和浮游植物生物学指数评价城市河流水质

IF 0.7

Journal of Mathematical and Fundamental Sciences Pub Date : 2023-05-15 DOI: 10.5614/j.math.fund.sci.2022.54.3.3

O. Cahyonugroho, S. Hariyanto, G. Supriyanto

{"title":"Applying Fluorescence Dissolved Organic Matter Spectra and Phytoplankton Biology Index for Assessing Urban River Quality","authors":"O. Cahyonugroho, S. Hariyanto, G. Supriyanto","doi":"10.5614/j.math.fund.sci.2022.54.3.3","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2022.54.3.3","url":null,"abstract":"The relationship between phytoplankton dynamics and dissolved organic matter (DOM) in aquatic systems based on fluorophore organic matter properties results in poor implementation of methods for water quality monitoring. This study aimed to investigate the relation between fluorophore organic matter and phytoplankton index and to estimate the phytoplankton index by fluorescent organic components for water quality assessment. The research was conducted by sampling urban river water, followed by measuring the biological phytoplankton index and dissolved organic matter during the wet and dry seasons. Fluorescence Excitation Emission Matrices (FEEMs) analysis combined with Parallel Factor (PARAFAC) analysis identified three main components of the fluorescence organic matter, i.e., a fulvic acid-like component (C1) and humic acid-like components (C2 and C3), in the aquatic system, whether in the dry season or the wet season. C1 was mainly generated by phytoplankton species, i.e., Nitzschia sp., Plectonema sp., Navicula sp., and Pinnularia sp., and C2 and C3 had a less signiﬁcant relationship with phytoplankton species. The diversity of Bacillariophyta had a stronger contribution to the release of DOM than the diversity of Cyanobacteria. The abundance index of a particular phytoplankton species can be used to determine the organic components of FEEM-derived fluorescence organic matter.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":"65 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72544608","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

Havanensin-type Limonoids from the Stem Bark of Chisocheton pentandrus (Meliaceae) 五棱藤(Meliaceae)茎皮中的哈瓦那素型柠檬素

Journal of Mathematical and Fundamental Sciences Pub Date : 2023-05-15 DOI: 10.5614/j.math.fund.sci.2023.54.3.2

Dudi Runadi, Purnama Purnama, Supriatno Salam, Nulelasari Nurlelasari, Desi Harneti, Tri Mayanti, Rani Maharani, Unang Supratman, Yoshihito Shiono

引用次数: 0

Havanensin-type Limonoids from the Stem Bark of Chisocheton pentandrus (Meliaceae) 五棱藤(Meliaceae)茎皮中的哈瓦那素型柠檬素

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Journal of Mathematical and Fundamental Sciences Pub Date : 2023-05-15 DOI: 10.5614/j.math.fund.sci.2022.54.3.2

U. Supratman, Dudi Runadi, Purnama Purnama, S. Salam, Nulelasari Nurlelasari, D. Harneti, T. Mayanti, R. Maharani, Y. Shiono

引用次数: 0

Synthesis of Human Antibodies Against HBsAg in Newly Established Chinese Hamster Lung (CHL-YN) Cell Line 新建立的中国仓鼠肺(CHL-YN)细胞系人抗HBsAg抗体的合成

Journal of Mathematical and Fundamental Sciences Pub Date : 2023-05-07 DOI: 10.5614/j.math.fund.sci.2023.54.3.1

Meutia Diva Hakim, Noriko Yamano- Adachi, Takeshi Omasa, Marselina Irasonia Tan, Lia Dewi Juliawaty, Ernawati Arifin Giri-Rachman

{"title":"Synthesis of Human Antibodies Against HBsAg in Newly Established Chinese Hamster Lung (CHL-YN) Cell Line","authors":"Meutia Diva Hakim, Noriko Yamano- Adachi, Takeshi Omasa, Marselina Irasonia Tan, Lia Dewi Juliawaty, Ernawati Arifin Giri-Rachman","doi":"10.5614/j.math.fund.sci.2023.54.3.1","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2023.54.3.1","url":null,"abstract":"Hepatitis B immunoglobulin (HBIG) is an effective treatment for hepatitis B, including postexposure prophylaxis of HBV infection, prevention of HBV reinfection in liver transplant patients, and reducing sexual transmission. This study investigated the synthesis of human IgG antibodies that specifically target HBsAg subtype adr in CHL-YN cells, a newly established cell line that grows faster than CHO-K1. To achieve the synthesis of human IgG antibodies, a plasmid vector encoding DNA sequences for human IgG antibodies against HBsAg was constructed and then transiently transfected into CHL-YN cells. The expression and antigen-binding capacity of the recombinant human IgG antibodies were analyzed using western blot and ELISA. The results showed successful expression and secretion of human IgG antibodies that recognize HBsAg subtype adr in CHL-YN cells. The ELISA test confirmed the specificity of the human IgG antibodies towards HBsAg subtype adr. Thus, this study concluded that human IgG antibodies that target HBsAg subtype adr were transiently expressed in CHL-YN cells.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135962101","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

Synthesis of Human Antibodies Against HBsAg in Newly Established Chinese Hamster Lung (CHL-YN) Cell Line 新建立的中国仓鼠肺(CHL-YN)细胞系人抗HBsAg抗体的合成

IF 0.7

Journal of Mathematical and Fundamental Sciences Pub Date : 2023-05-07 DOI: 10.5614/j.math.fund.sci.2022.54.3.1

Meutia Diva Hakim, Noriko Yamano- Adachi, T. Omasa, M. Tan, L. D. Juliawaty, E. Giri-Rachman

{"title":"Synthesis of Human Antibodies Against HBsAg in Newly Established Chinese Hamster Lung (CHL-YN) Cell Line","authors":"Meutia Diva Hakim, Noriko Yamano- Adachi, T. Omasa, M. Tan, L. D. Juliawaty, E. Giri-Rachman","doi":"10.5614/j.math.fund.sci.2022.54.3.1","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2022.54.3.1","url":null,"abstract":"Hepatitis B immunoglobulin (HBIG) is an effective treatment for hepatitis B, including postexposure prophylaxis of HBV infection, prevention of HBV reinfection in liver transplant patients, and reducing sexual transmission. This study investigated the synthesis of human IgG antibodies that specifically target HBsAg subtype adr in CHL-YN cells, a newly established cell line that grows faster than CHO-K1. To achieve the synthesis of human IgG antibodies, a plasmid vector encoding DNA sequences for human IgG antibodies against HBsAg was constructed and then transiently transfected into CHL-YN cells. The expression and antigen-binding capacity of the recombinant human IgG antibodies were analyzed using western blot and ELISA. The results showed successful expression and secretion of human IgG antibodies that recognize HBsAg subtype adr in CHL-YN cells. The ELISA test confirmed the specificity of the human IgG antibodies towards HBsAg subtype adr. Thus, this study concluded that human IgG antibodies that target HBsAg subtype adr were transiently expressed in CHL-YN cells.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":"34 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78293281","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

Study of the Effect of Physical Parameters on Commercial Hydroponics Based on Internet of Things (IoT): A Case Study of Bok Coy Plants (Brassica rapa) and Water Spinach (Ipomoea Aquatica) 基于物联网的商业水培物理参数影响研究——以豆科植物(Brassica rapa)和水菠菜(Ipomoea Aquatica)为例

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Journal of Mathematical and Fundamental Sciences Pub Date : 2023-04-17 DOI: 10.5614/j.math.fund.sci.2022.54.2.5

M. Budiman, Efraim Partogi, A. Kristi, Prianka Anggara, N. Aminah

{"title":"Study of the Effect of Physical Parameters on Commercial Hydroponics Based on Internet of Things (IoT): A Case Study of Bok Coy Plants (Brassica rapa) and Water Spinach (Ipomoea Aquatica)","authors":"M. Budiman, Efraim Partogi, A. Kristi, Prianka Anggara, N. Aminah","doi":"10.5614/j.math.fund.sci.2022.54.2.5","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2022.54.2.5","url":null,"abstract":"Population growth causes the demand for food to increase. One solution that can be applied is agriculture with hydroponic technology. To increase production efficiency, one must know the physical parameters that most influence the production process. This research used an IoT system to gather accurate and precise measurement data of physical parameters to be used as a dataset for machine learning. The dataset consisted of light intensity, humidity, air temperature, and total dissolved solids (TDS). Plant growth was measured by leaf area of the plant, number of leaves, and plant stem length every 3 to 4 days. The models used in the machine learning process were linear regression, polynomial regression, and random forest regression. The machine learning results showed that the best model for predicting plant growth was random forest regression with an MAE of 8.3% and an R2 of 0.93, for both bok coy and water spinach. The variables that influence growth the most are TDS and light intensity. According to the relationship between TDS gradient and plant growth gradient, the most optimal growth can be achieved by raising the TDS gradient or by maintaining a high TDS, which can be achieved by adding nutrient solution to the tank regularly.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":"60 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78856238","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

Synthesis, Structure, Magnetic and Antibacterial Properties of polymeric [M(Quin)2(N(CN)2)2]∞ (M = Mn(II), Co(II); Quin = quinoline) 高分子[M(Quin)2(N(CN)2)2]∞(M = Mn(II)， Co(II))的合成、结构、磁性和抗菌性能喹啉)

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Journal of Mathematical and Fundamental Sciences Pub Date : 2023-03-19 DOI: 10.5614/j.math.fund.sci.2022.54.2.4

Wayan Dasna, Ubed Sonai, Fahruddin Arrozi, H. W. Wijaya, Sutandyo Dwija Laksmana, S. Golhen

引用次数: 0

Antibacterial Activity of Gyrinops versteegii Fruit Extracts against Staphylococcus aureus and Escherichia coli and GC-MS Analysis 黄花楸果实提取物对金黄色葡萄球菌和大肠杆菌的抑菌活性及GC-MS分析

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Journal of Mathematical and Fundamental Sciences Pub Date : 2023-03-04 DOI: 10.5614/j.math.fund.sci.2022.54.2.3

E. Hidayati, Yulifa Handayani, I. Sudarma

{"title":"Antibacterial Activity of Gyrinops versteegii Fruit Extracts against Staphylococcus aureus and Escherichia coli and GC-MS Analysis","authors":"E. Hidayati, Yulifa Handayani, I. Sudarma","doi":"10.5614/j.math.fund.sci.2022.54.2.3","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2022.54.2.3","url":null,"abstract":"Gyrinops versteegii is widely used in the perfume, incense, and cosmetic industries as a raw material. Other potential uses of the plant are being explored, including in food and medicine. Therefore, this study carried out antibacterial assay and gas chromatography-mass spectroscopy of G. versteegii fruit extracts in three solvents with different polarities, i.e., n-hexane, dichloromethane, and methanol. The agar well diffusion method was then used to test the extracts against Staphylococcus aureus and Escherichia coli. The dichloromethane extract showed the most effective antibacterial activity against S. aureus at a concentration of 40%, with a zone of inhibition of 13.17 mm compared to E. coli, for which it was 7 mm. Furthermore, the bacterial species showed different responses to the extracts. Total and partial inhibition was shown by the G. versteegii fruit extracts and E. coli, respectively, against S. aureus. Furthermore, GC-MS identified the following compounds in G. versteegii fruit extract: palmitic, oleic, and stearic acid, as well as bis-(2-ethylhexyl) phthalate, 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one, methyl octadec-9-enoate, squalene, and 2-monopalmitin derivates. The results showed antibacterial potency of G. versteegii fruit extract against pathogenic bacteria. Additionally, the antibacterial activity of the extract was stronger against S. aureus compared to E. coli.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88864739","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

Mathematical Analysis of Two Strains Covid-19 Disease Using SEIR Model 用SEIR模型对两株Covid-19疾病进行数学分析

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Journal of Mathematical and Fundamental Sciences Pub Date : 2022-12-28 DOI: 10.5614/j.math.fund.sci.2022.54.2.1

A. S. Eegunjobi, O. Makinde

引用次数: 2

Metagenomic Analysis of Bacterial Community in the Gut of Blister Beetle Mylabris pustulata Thunberg 水疱甲虫肠道细菌群落的宏基因组分析

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Journal of Mathematical and Fundamental Sciences Pub Date : 2022-10-18 DOI: 10.5614/j.math.fund.sci.2022.54.1.10

A. Dinoto, Z. Noviana, O. Efendy, H. Julistiono

{"title":"Metagenomic Analysis of Bacterial Community in the Gut of Blister Beetle Mylabris pustulata Thunberg","authors":"A. Dinoto, Z. Noviana, O. Efendy, H. Julistiono","doi":"10.5614/j.math.fund.sci.2022.54.1.10","DOIUrl":"https://doi.org/10.5614/j.math.fund.sci.2022.54.1.10","url":null,"abstract":"Blister beetles are an important object of study in the field of agriculture and health. Despite being known to be important for the host animal, the gut bacteria of blister beetles have not been investigated deeply. This study aimed to provide the first initial description of the gut bacterial community of Mylabris pustulata as one species of blister beetles, based on a culture-independent technique. Adult blister beetles of the same colony were sampled and confirmed as Mylabris pustulata Thunberg. The gut content was used in high throughput sequencing, targeting the V3-V4 regions of 16S rRNA gene, and in the cultivation of resident bacteria. The results showed that higher bacterial richness was present in the gut communities when compared to the grown bacterial culture. Proteobacteria was confirmed as the most abundant phylum in the gut of M. pustulata, whereby most reads belonged to the class of Gammaproteobacteria. The dominant bacterial genera were determined as Enterobacter, Acinetobacter, Enterococcus, Klebsiella, and Pseudomonas. In addition, our cultivation attempts led to successful isolation of members of Klebsiella and Enterococcus. The subject of this study could be explored further to find the potential roles of these microbiota in the gut of the specific beetles and their bioprospects.","PeriodicalId":16255,"journal":{"name":"Journal of Mathematical and Fundamental Sciences","volume":"9 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81780192","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