Pub Date : 2022-12-31DOI: 10.3329/jbas.v46i2.59895
Md. Rajibul Akanda, Umme Habiba Ema, M. Haque, M. Hasan, Md Al amin Miah
This study describes a straightforward protocol for synthesizing cupric oxide nanoparticles from the peel extract of Spondias mombin. The CuO NPs were produced in a basic H2O solution as cubic-shaped, homogenous nanoparticles with excellent peroxidase activity without taking any special precautions. The influence of the concentration of the peel extract, temperature as well as the synthesis medium on CuO NPs production has been investigated extensively. The typical UV-visible absorption maxima observed at wavelengths of 279 and 383 nm observed in spectrophotometry confirmed the formation of CuO NPs. Moreover, the homogeneity, shape (cubic), and size (approximately averaged ⁓31nm (29nm⁓38nm)) of the synthesized CuO nanoparticles under optimum conditions were confirmed through the SEM technique. Besides, its elemental compositions, capping agent, and crystallinity were investigated through EDS, FT-IR and XRD. Finally, in the presence of hydrogen peroxide (H2O2), the as-prepared CuO NPs demonstrated excellent peroxidase activity against 3,3',5,5'-tetramethylbenzidine (TMB). J. Bangladesh Acad. Sci. 46(2); 135-145: December 2022
{"title":"Optimization of the cupric oxide nanoparticles synthesis by novel spondias mombin peel extract exhibited excellent peroxidase activity","authors":"Md. Rajibul Akanda, Umme Habiba Ema, M. Haque, M. Hasan, Md Al amin Miah","doi":"10.3329/jbas.v46i2.59895","DOIUrl":"https://doi.org/10.3329/jbas.v46i2.59895","url":null,"abstract":"This study describes a straightforward protocol for synthesizing cupric oxide nanoparticles from the peel extract of Spondias mombin. The CuO NPs were produced in a basic H2O solution as cubic-shaped, homogenous nanoparticles with excellent peroxidase activity without taking any special precautions. The influence of the concentration of the peel extract, temperature as well as the synthesis medium on CuO NPs production has been investigated extensively. The typical UV-visible absorption maxima observed at wavelengths of 279 and 383 nm observed in spectrophotometry confirmed the formation of CuO NPs. Moreover, the homogeneity, shape (cubic), and size (approximately averaged ⁓31nm (29nm⁓38nm)) of the synthesized CuO nanoparticles under optimum conditions were confirmed through the SEM technique. Besides, its elemental compositions, capping agent, and crystallinity were investigated through EDS, FT-IR and XRD. Finally, in the presence of hydrogen peroxide (H2O2), the as-prepared CuO NPs demonstrated excellent peroxidase activity against 3,3',5,5'-tetramethylbenzidine (TMB).\u0000J. Bangladesh Acad. Sci. 46(2); 135-145: December 2022 ","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76450622","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}
Pub Date : 2022-12-31DOI: 10.3329/jbas.v46i2.63046
Taskin Sakin, Tanbin Ahmed, A. Azad
The performance of Brillouin optical time domain analysis (BOTDA) sensors is largely deteriorated due to the poor signal-to-noise ratio (SNR) of Brillouin gain spectra (BGSs) collected from the BOTDA experiment. The fast monitoring of distributed temperature using BOTDA sensors is also vital for many longdistant applications. To cope with these requirements, this paper proposes total variation denoising (TVD) and Euclidean distance-based pattern recognition (TEPR) for high-performance BOTDA sensors. The performances of TEPR are analyzed explicitly, and rigorous comparisons have been made with traditional nonlinear least squares fitting (NLSF). The experimentally demonstrated results signify that the proposed TEPR can improve the measurement uncertainty by up to ~55% compared to NLSF without worsening the experimental spatial resolution. The signal processing for using TEPR is also ~4 times faster than that for using NLSF. Hence, the proposed technique is an efficient and reliable alternative for the fast and accurate monitoring of distributed temperature in BOTDA sensors. J. Bangladesh Acad. Sci. 46(2); 193-202: December 2022
{"title":"Total variation denoising and Euclidean distance based distributed temperature monitoring in Brillouin optical time-domain analysis sensors","authors":"Taskin Sakin, Tanbin Ahmed, A. Azad","doi":"10.3329/jbas.v46i2.63046","DOIUrl":"https://doi.org/10.3329/jbas.v46i2.63046","url":null,"abstract":"The performance of Brillouin optical time domain analysis (BOTDA) sensors is largely deteriorated due to the poor signal-to-noise ratio (SNR) of Brillouin gain spectra (BGSs) collected from the BOTDA experiment. The fast monitoring of distributed temperature using BOTDA sensors is also vital for many longdistant applications. To cope with these requirements, this paper proposes total variation denoising (TVD) and Euclidean distance-based pattern recognition (TEPR) for high-performance BOTDA sensors. The performances of TEPR are analyzed explicitly, and rigorous comparisons have been made with traditional nonlinear least squares fitting (NLSF). The experimentally demonstrated results signify that the proposed TEPR can improve the measurement uncertainty by up to ~55% compared to NLSF without worsening the experimental spatial resolution. The signal processing for using TEPR is also ~4 times faster than that for using NLSF. Hence, the proposed technique is an efficient and reliable alternative for the fast and accurate monitoring of distributed temperature in BOTDA sensors. J.\u0000Bangladesh Acad. Sci. 46(2); 193-202: December 2022","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"126 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90568768","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}
Pub Date : 2022-12-31DOI: 10.3329/jbas.v46i2.63418
M. Debnath, Md Maksuder Rahman, S. K. Biswas
An experiment was conducted during 2020-21 at Jute Research Substation, Jashore, to study growth and seed yield response of kenaf to different sowing times. Seeds were sown from 15 July to 1 October, an interval of 15 days, as treatment variables under RCBD design with three replications. Greater seed yield was obtained from the 1st September sowing, which was at par with 15 September and 15 August sowings values. So, maximum seed production of kenaf may be ensured with optimum seed sowing between the 1st and 15thof September. J. Bangladesh Acad. Sci. 46(2); 219-221: December 2022
{"title":"Growth and yield response of Kenaf (Hibiscus cannabinus L.) seed production to different sowing times","authors":"M. Debnath, Md Maksuder Rahman, S. K. Biswas","doi":"10.3329/jbas.v46i2.63418","DOIUrl":"https://doi.org/10.3329/jbas.v46i2.63418","url":null,"abstract":"An experiment was conducted during 2020-21 at Jute Research Substation, Jashore, to study growth and seed yield response of kenaf to different sowing times. Seeds were sown from 15 July to 1 October, an interval of 15 days, as treatment variables under RCBD design with three replications. Greater seed yield was obtained from the 1st September sowing, which was at par with 15 September and 15 August sowings values. So, maximum seed production of kenaf may be ensured with optimum seed sowing between the 1st and 15thof September. \u0000J. Bangladesh Acad. Sci. 46(2); 219-221: December 2022 ","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76699591","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}
Pub Date : 2022-12-31DOI: 10.3329/jbas.v46i2.63417
M. Z. Abedin, Md Muhaymenul Islam, Md. Babul Aktar, Muhammad Irfanul Islam, Nowshin Tarannum, Laila Jarin, Zohora Fatema Tuz, Ahmed Abdullah Akhtar
Bloodstream infections (BSI) are serious, life-threatening, and critical clinical conditions with high global human morbidity and mortality rates. This study aimed to determine the Gram-negative bacterial profiles and antimicrobial resistance patterns of acute bloodstream infections in rural patients. Three hundred forty-six blood samples were collected and analyzed with the BD BactecTM FX40 automated culture system, selective media culture, and biochemical parameters. Finally, antimicrobial susceptibility testing was performed using the disk diffusion method. The most common age group affected out of 51 cases was 41-60 years, with 20 patients (39.22%), and 1-15 years, with 2 patients (3.92%). Male patients were more susceptible (66.67%) than female patients. Among the isolates, E. coli was the most common, with 23 cases (45.1%); Cephradine was the most resistant antibiotic, and Imipenem was the most sensitive. Multiple drug-resistant pathogens were one of the most notable findings in our work. Our study will surely provide the best guide for properly treating antibacterial-resistant bacterial diseases and minimizing their critical mortality and morbidity. J. Bangladesh Acad. Sci. 46(2); 185-191: December 2022
{"title":"Etiologies and antibiotic resistance patterns of acute bloodstream infections by gram-negative bacterial isolates in a tertiary care hospital, Sirajganj, Bangladesh","authors":"M. Z. Abedin, Md Muhaymenul Islam, Md. Babul Aktar, Muhammad Irfanul Islam, Nowshin Tarannum, Laila Jarin, Zohora Fatema Tuz, Ahmed Abdullah Akhtar","doi":"10.3329/jbas.v46i2.63417","DOIUrl":"https://doi.org/10.3329/jbas.v46i2.63417","url":null,"abstract":"Bloodstream infections (BSI) are serious, life-threatening, and critical clinical conditions with high global human morbidity and mortality rates. This study aimed to determine the Gram-negative bacterial profiles and antimicrobial resistance patterns of acute bloodstream infections in rural patients. Three hundred forty-six blood samples were collected and analyzed with the BD BactecTM FX40 automated culture system, selective media culture, and biochemical parameters. Finally, antimicrobial susceptibility testing was performed using the disk diffusion method. The most common age group affected out of 51 cases was 41-60 years, with 20 patients (39.22%), and 1-15 years, with 2 patients (3.92%). Male patients were more susceptible (66.67%) than female patients. Among the isolates, E. coli was the most common, with 23 cases (45.1%); Cephradine was the most resistant antibiotic, and Imipenem was the most sensitive. Multiple drug-resistant pathogens were one of the most notable findings in our work. Our study will surely provide the best guide for properly treating antibacterial-resistant bacterial diseases and minimizing their critical mortality and morbidity.\u0000 J. Bangladesh Acad. Sci. 46(2); 185-191: December 2022 ","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79207555","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}
Pub Date : 2022-12-31DOI: 10.3329/jbas.v46i2.60444
A. Majumdar
This paper proposes a new version of the Reve’s puzzle, allowing at most one violation of the “divine rule”. Letting S(n) be the minimum number of moves required to solve the problem with n(³ 1) discs, an scheme is given to find the dynamic programming equation satisfied by S(n). A closed- form expression of S(n) is derived. J. Bangladesh Acad. Sci. 46(2); 213-217 December 2022
{"title":"The Reve’s Puzzle with single relaxation of the Divine rule","authors":"A. Majumdar","doi":"10.3329/jbas.v46i2.60444","DOIUrl":"https://doi.org/10.3329/jbas.v46i2.60444","url":null,"abstract":"This paper proposes a new version of the Reve’s puzzle, allowing at most one violation of the “divine rule”. Letting S(n) be the minimum number of moves required to solve the problem with n(³ 1) discs, an scheme is given to find the dynamic programming equation satisfied by S(n). A closed- form expression of S(n) is derived.\u0000J. Bangladesh Acad. Sci. 46(2); 213-217 December 2022 ","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83299932","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}
Pub Date : 2022-12-31DOI: 10.3329/jbas.v46i2.63416
A. Haider, N. Hoque, Arifur Rahaman, Zulfiqar Hasan Khan
Lifetimes of the upper states of excited oxygen atoms corresponding to transitions to the common lower state in the case of the emission lines around 777 nm and 844 nm have been estimated by measuring the line intensities as a function of the delay time between the Q-switching of the laser and the opening of the window of the ICCD. In the case of the emission line around 777 nm, resulting from the transitions from the three very closely spaced upper energy levels, 2s2 2p3 (4S0) 3p5P3 (777.194 nm), 2s2 2p3 (4S0) 3p5P2 (777.417 nm) and 2s2 2p3 (4S0) 3p5P1 (777.539 nm) to the common lower energy level 2s2 2p3 (4S0) 3s5S2, the lifetime was measured to be 253 ns. Similarly, in the case of the emission-line around 844 nm, resulting from the transitions from the three very closely spaced upper energy levels 2s2 2p3 (4S0) 3p3P0 (844.625 nm), 2s2 2p3 (4S0) 3p3P2 (844.636 nm) and 2s2 2p3 (4S0) 3p3P1 (844.676 nm) to the common lower energy level 2p3 (4S0) 3s3S1, the lifetime was measured to be 278 ns by this technique. The measured lifetimes in our experiment, for both 777 nm and 844 nm atomic transition lines of oxygen (O), are almost nine times higher than the theoretical value. Self-absorption and radiation trapping are possible mechanisms responsible for the mismatch between measured and intrinsic lifetimes. Last but not least, utilizing the TR-LIBS technique is yet another incredible application to estimate the prolonged lifetime of closely spaced excited states of an atom in the presence of self-absorption and radiation trapping. The average plasma cooling temperature (excitation temperature) lifetime was found to be 1183 ns, which is compatible with the previously reported values. J. Bangladesh Acad. Sci. 46(2); 175-183: December 2022
{"title":"Estimation of prolonged lifetimes of excited states of neutral oxygen atom (OI) by time-resolved laser-induced breakdown spectroscopy (TR-LIBS)","authors":"A. Haider, N. Hoque, Arifur Rahaman, Zulfiqar Hasan Khan","doi":"10.3329/jbas.v46i2.63416","DOIUrl":"https://doi.org/10.3329/jbas.v46i2.63416","url":null,"abstract":"Lifetimes of the upper states of excited oxygen atoms corresponding to transitions to the common lower state in the case of the emission lines around 777 nm and 844 nm have been estimated by measuring the line intensities as a function of the delay time between the Q-switching of the laser and the opening of the window of the ICCD. In the case of the emission line around 777 nm, resulting from the transitions from the three very closely spaced upper energy levels, 2s2 2p3 (4S0) 3p5P3 (777.194 nm), 2s2 2p3 (4S0) 3p5P2 (777.417 nm) and 2s2 2p3 (4S0) 3p5P1 (777.539 nm) to the common lower energy level 2s2 2p3 (4S0) 3s5S2, the lifetime was measured to be 253 ns. Similarly, in the case of the emission-line around 844 nm, resulting from the transitions from the three very closely spaced upper energy levels 2s2 2p3 (4S0) 3p3P0 (844.625 nm), 2s2 2p3 (4S0) 3p3P2 (844.636 nm) and 2s2 2p3 (4S0) 3p3P1 (844.676 nm) to the common lower energy level 2p3 (4S0) 3s3S1, the lifetime was measured to be 278 ns by this technique. The measured lifetimes in our experiment, for both 777 nm and 844 nm atomic transition lines of oxygen (O), are almost nine times higher than the theoretical value. Self-absorption and radiation trapping are possible mechanisms responsible for the mismatch between measured and intrinsic lifetimes. Last but not least, utilizing the TR-LIBS technique is yet another incredible application to estimate the prolonged lifetime of closely spaced excited states of an atom in the presence of self-absorption and radiation trapping. The average plasma cooling temperature (excitation temperature) lifetime was found to be 1183 ns, which is compatible with the previously reported values.\u0000J. Bangladesh Acad. Sci. 46(2); 175-183: December 2022","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"100 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82483487","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}
Pub Date : 2022-12-31DOI: 10.3329/jbas.v46i2.63415
T. I. Anee, P. K. Biswas, M. Hasanuzzaman
To understand the responsive nature to excess water, a pot experiment was conducted at different growth stages of sesame (Sesamum indicum L. cv. BARI Til-4). The waterlogging stress at each stage was set to three durations, viz. 2, 4, and 6 days. Twelve different treatment combinations were replicated three times and arranged in a completely randomized design. Different morpho-physiological and yield parameters were measured after the completion of the longest stress duration (6 days). The data revealed that sesame is vulnerable to excess water conditions, and the sensitivity is positively correlated with the stress duration. Plant biomass, leaf area, SPAD value, and the yield attributes recorded are observed to be declined with the increment of stress duration. Another important finding is that among the three growth stages of sesame, the reproductive stage is the most sensitive stage, which hardly withstands waterlogging. the stress at the vegetative stage affect yield parameters minimally. J. Bangladesh Acad. Sci. 46(2); 165-173: December 2022
为了解芝麻(Sesamum indicum L. cv.)对过量水分的响应特性，在不同生育期进行了盆栽试验。巴里Til-4)。每个阶段的内涝应力设置为3个持续时间，即2天、4天和6天。12种不同的治疗组合重复3次，并以完全随机设计排列。在最长的胁迫时间(6 d)结束后，测量了不同的形态生理和产量参数。数据显示，芝麻对过量水分条件的敏感性与胁迫持续时间呈正相关。随着胁迫持续时间的增加，植物生物量、叶面积、SPAD值和产量属性均呈下降趋势。另一个重要的发现是，在芝麻的三个生长阶段中，繁殖阶段是最敏感的阶段，几乎不耐涝渍。营养期胁迫对产量参数的影响最小。科学通报46(2);165-173: 2022年12月
{"title":"Changes in morpho-physiological and yield attributes of Sesamum indicum under waterlogging at different growth stages","authors":"T. I. Anee, P. K. Biswas, M. Hasanuzzaman","doi":"10.3329/jbas.v46i2.63415","DOIUrl":"https://doi.org/10.3329/jbas.v46i2.63415","url":null,"abstract":"To understand the responsive nature to excess water, a pot experiment was conducted at different growth stages of sesame (Sesamum indicum L. cv. BARI Til-4). The waterlogging stress at each stage was set to three durations, viz. 2, 4, and 6 days. Twelve different treatment combinations were replicated three times and arranged in a completely randomized design. Different morpho-physiological and yield parameters were measured after the completion of the longest stress duration (6 days). The data revealed that sesame is vulnerable to excess water conditions, and the sensitivity is positively correlated with the stress duration. Plant biomass, leaf area, SPAD value, and the yield attributes recorded are observed to be declined with the increment of stress duration. Another important finding is that among the three growth stages of sesame, the reproductive stage is the most sensitive stage, which hardly withstands waterlogging. the stress at the vegetative stage affect yield parameters minimally.\u0000J. Bangladesh Acad. Sci. 46(2); 165-173: December 2022 ","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87224942","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}
Pub Date : 2022-12-31DOI: 10.3329/jbas.v46i2.62168
Md. Tariqul Islam, M. Miah
The goal of this research is to focuses on multi-objective transportation problems, to reduce the cost of transporting a good from a variety of sources or origins to a range of destinations while adhering to a predetermined mathematical framework. By using interval values, the policy maker indicated the parameters of source and destination. In this work, a novel approach for finding initial basic feasible solutions (IBFS) that are extremely near to the best ones for a variety of transportation problems is presented. The proposed method can become a milestone in resolving the constraints to achieve the goal in solving transport problem. For the decision maker, regarding logistics and supply chains, it may be quite profitable. The prediction model is supported by an illustration drawn from mathematical view. All the LPPs are evaluated with the help of LINGO. Bangladesh Acad. Sci. 46(2); 155-164: December 2022
{"title":"Optimization of Interval Cost Multi-objective Transportation Problem in Uncertain Parameters: A Modified Least-Cost Method","authors":"Md. Tariqul Islam, M. Miah","doi":"10.3329/jbas.v46i2.62168","DOIUrl":"https://doi.org/10.3329/jbas.v46i2.62168","url":null,"abstract":"The goal of this research is to focuses on multi-objective transportation problems, to reduce the cost of transporting a good from a variety of sources or origins to a range of destinations while adhering to a predetermined mathematical framework. By using interval values, the policy maker indicated the parameters of source and destination. In this work, a novel approach for finding initial basic feasible solutions (IBFS) that are extremely near to the best ones for a variety of transportation problems is presented. The proposed method can become a milestone in resolving the constraints to achieve the goal in solving transport problem. For the decision maker, regarding logistics and supply chains, it may be quite profitable. The prediction model is supported by an illustration drawn from mathematical view. All the LPPs are evaluated with the help of LINGO.\u0000Bangladesh Acad. Sci. 46(2); 155-164: December 2022","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83204686","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}
Pub Date : 2022-06-29DOI: 10.3329/jbas.v46i1.60343
M. S. Ali
Abstract not available J. Bangladesh Acad. Sci. 46(1); June 2022
摘要不可用。科学通报46(1);2022年6月
{"title":"Late Professor Hironmoy Sen Gupta (1934-2022)","authors":"M. S. Ali","doi":"10.3329/jbas.v46i1.60343","DOIUrl":"https://doi.org/10.3329/jbas.v46i1.60343","url":null,"abstract":"Abstract not available\u0000J. Bangladesh Acad. Sci. 46(1); June 2022","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75045903","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}
Pub Date : 2022-06-29DOI: 10.3329/jbas.v46i1.59177
M. Haque, M. Rahman, J. Ferdousi, Md. Bokhtiar Rahman, A. Halilu
This research aimed to assess the concentrations of As, Cd, Cr, Pb, and Zn in Swarna rice (NR) collected from Kaharole, Biral, and Sadar Upazilla of Dinajpur and their reduction by cooking associated submerged fermentation. The levels of As, Cd, Cr, and Zn were lower than the individual metal’s safe limit, but the (Pb) concentrations were found at 0.2582, 0.9028, 0.9164, 0.7303, 0.8574, 0.6440, 0.6622 mg/kg in SR02, SR04, SR05, SR06, SR07, SR08, and SR09 of NR samples, respectively, which were higher than the (Pb) safe limit. Notably, the reduced hazard index (HI) was found from the standard limit 1 for all fermented rice (FR) samples and all boiled rice (BR) samples except SR05. Six different Streptococcus sp. strains were identified in FR that suggested Streptococcal involvement in leaching of HMs during submerged-fermentation. Consequently, compared to NR, hazard index and cumulative carcinogenic risk were declined by several folds in FR. J. Bangladesh Acad. Sci. 46(1); 85-99: June 2022
{"title":"Fate of heavy metals in Swarna rice after traditional cooking and submerged fermentation linked to bacterial interactions","authors":"M. Haque, M. Rahman, J. Ferdousi, Md. Bokhtiar Rahman, A. Halilu","doi":"10.3329/jbas.v46i1.59177","DOIUrl":"https://doi.org/10.3329/jbas.v46i1.59177","url":null,"abstract":"This research aimed to assess the concentrations of As, Cd, Cr, Pb, and Zn in Swarna rice (NR) collected from Kaharole, Biral, and Sadar Upazilla of Dinajpur and their reduction by cooking associated submerged fermentation. The levels of As, Cd, Cr, and Zn were lower than the individual metal’s safe limit, but the (Pb) concentrations were found at 0.2582, 0.9028, 0.9164, 0.7303, 0.8574, 0.6440, 0.6622 mg/kg in SR02, SR04, SR05, SR06, SR07, SR08, and SR09 of NR samples, respectively, which were higher than the (Pb) safe limit. Notably, the reduced hazard index (HI) was found from the standard limit 1 for all fermented rice (FR) samples and all boiled rice (BR) samples except SR05. Six different Streptococcus sp. strains were identified in FR that suggested Streptococcal involvement in leaching of HMs during submerged-fermentation. Consequently, compared to NR, hazard index and cumulative carcinogenic risk were declined by several folds in FR.\u0000J. Bangladesh Acad. Sci. 46(1); 85-99: June 2022","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"08 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85980643","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}
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