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Density Functional Theory (DFT) Study of a Binary Mixture of MBBA and PAA Liquid Crystal for THz Application 密度泛函理论(DFT)研究用于太赫兹应用的MBBA和PAA二元混合物液晶
IF 0.5
Makara Journal of Science Pub Date : 2022-12-20 DOI: 10.7454/mss.v26i4.1412
Mirtunjai Mishra, Narinder Kumar, Pawan Singh, B. Rawat, Reena Dhyani, Devendra Singh, Devesh Kumar
{"title":"Density Functional Theory (DFT) Study of a Binary Mixture of MBBA and PAA Liquid Crystal for THz Application","authors":"Mirtunjai Mishra, Narinder Kumar, Pawan Singh, B. Rawat, Reena Dhyani, Devendra Singh, Devesh Kumar","doi":"10.7454/mss.v26i4.1412","DOIUrl":"https://doi.org/10.7454/mss.v26i4.1412","url":null,"abstract":"The present scenario expresses the electro-optical effect of abinary mixture of MBBA and PAA liquid crystal studied under the impact of the electric field in THz frequency. The binary mixture has a negative order parameter, negative birefringence, and a nematic phase stability under such an electric field. The refractive index remains constant at high THz frequency. The director angle is sensitive to THz frequency, contributing to the maximum fluctuation. The atomic contribution of a binary mixture is approximately equal to the molecular contribution. The binary mixture has a remarkably high bandgap. The C-H, O-C, C-N atom stretching, and wagging of alkyl chain contribute to the dipolar strength of the binary mixture.","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"60 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76999315","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
Determination of Total Ammonia Nitrogen by Gas-Diffusion Flow Injection Analysis (GD-FIA)-Spectrophotometry using Minnieroot Flower (Ruellia tuberosa) as Natural Reagent 气体扩散流动注射分析(GD-FIA)-分光光度法测定总氨氮，以小檗花为天然试剂
IF 0.5
Makara Journal of Science Pub Date : 2022-12-20 DOI: 10.7454/mss.v26i4.1344
Lani Artana Putri, Puspita Mufidah Sari, Hermin Sulistyarti, A. Sabarudin, Erwin Sulistyo
{"title":"Determination of Total Ammonia Nitrogen by Gas-Diffusion Flow Injection Analysis (GD-FIA)-Spectrophotometry using Minnieroot Flower (Ruellia tuberosa) as Natural Reagent","authors":"Lani Artana Putri, Puspita Mufidah Sari, Hermin Sulistyarti, A. Sabarudin, Erwin Sulistyo","doi":"10.7454/mss.v26i4.1344","DOIUrl":"https://doi.org/10.7454/mss.v26i4.1344","url":null,"abstract":"Total ammonia nitrogen (TAN) is a pollutant agent found in water and generated from the metabolisms of living organisms and the decomposition of organic matter. This research aims to develop an efficient, low-cost, and environmentally friendly TAN analysis method. The principle of this method is based on the reaction of TAN injected in the donor stream with NaOH to form alkaline gaseous ammonia. The gaseous ammonia diffuses through a hydrophobic membrane into an acceptor stream containing Ruellia tuberosa extract. The presence of NH 3 gas in the acceptor stream changes the extract color from pinkish to green, which is monitored by spectrophotometer at 620 nm. This method was also validated based on linearity, selectivity, and accuracy. Under the obtained optimum conditions of 1 M NaOH, 5% extract, a 120 cm mixing coil, and a 200 µL sample volume, the proposed method showed excellent linearity at 10–1000 ppm (R 2 = 0.993). The selectivity test result shows that this method was selective against sulfite and nitrite compounds up to 600 ppm with a % error value <10%. This method was applied to measure the total ammonia concentration in agricultural water, and satisfying results were shown by high recoveries of 95.03%–98.84%.","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"28 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89537993","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
Application of Accuracy and Precision Evaluations Based on the Current United States and Indonesian Pharmacopoeias: A Critical Review 基于现行美国和印度尼西亚药典的准确度和精密度评价的应用:综述
IF 0.5
Makara Journal of Science Pub Date : 2022-12-20 DOI: 10.7454/mss.v26i4.1343
G. Indrayanto
{"title":"Application of Accuracy and Precision Evaluations Based on the Current United States and Indonesian Pharmacopoeias: A Critical Review","authors":"G. Indrayanto","doi":"10.7454/mss.v26i4.1343","DOIUrl":"https://doi.org/10.7454/mss.v26i4.1343","url":null,"abstract":"New methods for the evaluation of accuracy and precision are mentioned in the latest edition of the United States Pharmacopoeia (USP), whereas other validation parameters, that is, selectivity, linearity, range, and robustness, remained relatively unchanged. In obtaining reliable data from any chemical/pharmaceutical analysis, the analytical procedure must be validated or verified in accordance with the latest edition of the pharmacopoeia. Some review articles on the general validation methods have been published by the author. This present review will focus on the implementation and discussion of the accuracy and precision evaluation based on the current USP and Indonesian pharmacopoeia. Some examples of the calculation of several accuracy and precision method of determinations are also discussed.","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"83 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73066975","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
Chitosan Oligosaccharides as a Nanomaterial Platform: Biological Properties and Applications in the Biomedical and Pharmaceutical Fields 壳聚糖作为纳米材料平台:生物学特性及其在生物医学和制药领域的应用
IF 0.5
Makara Journal of Science Pub Date : 2022-12-20 DOI: 10.7454/mss.v26i4.1337
Muhamad Alif, Razi
{"title":"Chitosan Oligosaccharides as a Nanomaterial Platform: Biological Properties and Applications in the Biomedical and Pharmaceutical Fields","authors":"Muhamad Alif, Razi","doi":"10.7454/mss.v26i4.1337","DOIUrl":"https://doi.org/10.7454/mss.v26i4.1337","url":null,"abstract":"Chitosan oligosaccharides (COS) have been introduced as marine-derived biomaterials with potential health benefits and good water solubility properties. This study presents an overview of the promising nanomaterial platform for biomedical and pharmaceutical applications of COS. The health benefits of COS, primarily their antioxidant and protective effects, anti-inflammatory activity, antidiabetic properties, and cholesterol-lowering effects are discussed. Furthermore, the promising recent articles on specific topics such as drug delivery systems and nanobiomaterials, are highlighted","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"36 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89218033","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
Temperature Influence on the Optical Properties, Attenuation Coefficient, and Total Molecular Cross Section of Dhunge Dhara Drinking Water 温度对Dhunge Dhara饮用水光学性质、衰减系数和总分子截面的影响
IF 0.5
Makara Journal of Science Pub Date : 2022-12-20 DOI: 10.7454/mss.v26i4.1335
S. Dhobi, B. Koirala, K. Yadav, J. Nakarmi, S. Gupta, Santosh, Kumar K. Das, A. K. Shah, K. Dahal, R. L. Sah
{"title":"Temperature Influence on the Optical Properties, Attenuation Coefficient, and Total Molecular Cross Section of Dhunge Dhara Drinking Water","authors":"S. Dhobi, B. Koirala, K. Yadav, J. Nakarmi, S. Gupta, Santosh, Kumar K. Das, A. K. Shah, K. Dahal, R. L. Sah","doi":"10.7454/mss.v26i4.1335","DOIUrl":"https://doi.org/10.7454/mss.v26i4.1335","url":null,"abstract":"This work aims to measure the different parameters of Dhunge Dhara water (DDW) such as absorbance, transmittance, mass attenuation coefficient (MAC), and molecular cross section (MCS) and experimentally compare the obtained values with those of pure water (PW) at various temperatures (5 °C to 90 °C) using a theremino spectrometer. Observation shows that the parameters vary with temperature and wavelength. The transmittance of DDW ranges from 18% to 85% and absorbance of the same ranges from 0.09 Au to 0.7 Au. Meanwhile, the transmittance of PW ranges from 40% to 98% and the absorbance of the same ranges from 0.09 Au to 0.39 Au. The MAC of PW ranges from 0.02 cmg to 0.6 cmg, and that for DDW ranges from 0.2 cmg to 1.1 cmg at 30 °C. The MCS of PW ranges from 0.1 × 10cm to 2.7 × 10cm, and that of DDW ranges from 0.9 × 10cm to 5.5 × 10cm at 30 °C. In conclusion, DDW has an extremely high amount of impurities and total dissolved solids and is recommended to be filtered prior to use (drinking and cooking).","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"278 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80082035","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
Development and Optimization of an Immunoassay for the Detection of Antibodies Against SARS-CoV-2 with In-house Recombinant RBD Protein 内部重组RBD蛋白检测SARS-CoV-2抗体免疫分析法的建立与优化
IF 0.5
Makara Journal of Science Pub Date : 2022-09-30 DOI: 10.7454/mss.v26i3.1342
S. P. P. Ratu, S. Mariya, R. Noviana, U. Saepuloh, H. Darusman
{"title":"Development and Optimization of an Immunoassay for the Detection of Antibodies Against SARS-CoV-2 with In-house Recombinant RBD Protein","authors":"S. P. P. Ratu, S. Mariya, R. Noviana, U. Saepuloh, H. Darusman","doi":"10.7454/mss.v26i3.1342","DOIUrl":"https://doi.org/10.7454/mss.v26i3.1342","url":null,"abstract":"COVID-19 caused by SARS-CoV-2 poses a major threat to the global community, particularly in Indonesia. Countermeasures to prevent the spread of this disease have also been implemented, including the implementation of a vaccination program. An immunoassay technique that can be used to analyze antibodies that might develop following vaccination is the indirect enzyme-linked immunosorbent assay (ELISA). We produced the recombinant spike protein used in this study. The optimization comprised adjusted concentrations of spike recombinant protein (5 and 10 ng/mL), blocking agent (2.5% and 5%), and conjugate (1:1000 and 1:5000). The optimal conditions in this study included a spiked concentration of 10 ng/mL, a blocking agent concentration of 5%, sample dilution of 1:33, and a conjugate concentration of 1:1000. The intra-assay value of this optimized indirect ELISA was 7.3, and the inter-assay value was 5.3. The commercial MyBioSource kit and immunodiagnostic were utilized as a reference in the T-test, with P-values of 0 and 0.313, indicating that the recombinant protein in-house ELISA kit in this study demonstrated the same ability as the commercial immunodiagnostic kit in detecting SARS-CoV-2 antibodies, allowing it to be used for post-vaccination efficacy evaluation. © 2022, Universitas Indonesia. All rights reserved.","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85302861","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
Comparative Study of Bismuth Ferrite Deposition Method on TiO2 Nanotube and Performance of Hydrogen Evolution in a Photoelectrochemical Dye-Sensitized Solar Cell Tandem System 二氧化钛纳米管上铋铁氧体沉积方法与光电化学染料敏化太阳能电池串联系统析氢性能的比较研究
IF 0.5
Makara Journal of Science Pub Date : 2022-09-30 DOI: 10.7454/mss.v26i3.1387
{"title":"Comparative Study of Bismuth Ferrite Deposition Method on TiO2 Nanotube and Performance of Hydrogen Evolution in a Photoelectrochemical Dye-Sensitized Solar Cell Tandem System","authors":"","doi":"10.7454/mss.v26i3.1387","DOIUrl":"https://doi.org/10.7454/mss.v26i3.1387","url":null,"abstract":"","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"22 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74192638","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
Estimation of the Bubble Point Pressure of Multicomponent Reservoir Hydrocarbon Fluids 多组分油藏烃类流体泡点压力的估算
IF 0.5
Makara Journal of Science Pub Date : 2022-09-30 DOI: 10.7454/mss.v26i3.1331
{"title":"Estimation of the Bubble Point Pressure of Multicomponent Reservoir Hydrocarbon Fluids","authors":"","doi":"10.7454/mss.v26i3.1331","DOIUrl":"https://doi.org/10.7454/mss.v26i3.1331","url":null,"abstract":"","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"3 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88927940","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
Modulation of the NF-κB Activation Pathway by Phycocyanobilin from Spirulina platensis: An in Silico Study 螺旋藻藻蓝胆素对NF-κB激活途径的调控:一项硅化研究
IF 0.5
Makara Journal of Science Pub Date : 2022-09-30 DOI: 10.7454/mss.v26i3.1377
{"title":"Modulation of the NF-κB Activation Pathway by Phycocyanobilin from Spirulina platensis: An in Silico Study","authors":"","doi":"10.7454/mss.v26i3.1377","DOIUrl":"https://doi.org/10.7454/mss.v26i3.1377","url":null,"abstract":"","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"5 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79785085","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
Mutation of Aspergillus sp. using Ultraviolet Light and Nitrous Acid for Amylase Production from Banana Peels 紫外光和亚硝酸诱变香蕉皮淀粉酶曲霉的研究
IF 0.5
Makara Journal of Science Pub Date : 2022-09-30 DOI: 10.7454/mss.v26i3.1357
{"title":"Mutation of Aspergillus sp. using Ultraviolet Light and Nitrous Acid for Amylase Production from Banana Peels","authors":"","doi":"10.7454/mss.v26i3.1357","DOIUrl":"https://doi.org/10.7454/mss.v26i3.1357","url":null,"abstract":"","PeriodicalId":18042,"journal":{"name":"Makara Journal of Science","volume":"16 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86420131","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
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