发布求助
文献互助 智能选刊 最新文献

Journal of Bangladesh Academy of Sciences最新文献

筛选
英文 中文
Late Professor Dr. Quazi Abdul Fattah 已故的Quazi Abdul Fattah教授
Journal of Bangladesh Academy of Sciences Pub Date : 2021-03-04 DOI: 10.3329/JBAS.V44I2.52282
Z. Begum
{"title":"Late Professor Dr. Quazi Abdul Fattah","authors":"Z. Begum","doi":"10.3329/JBAS.V44I2.52282","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.52282","url":null,"abstract":"Abstract not available \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, i-iii, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82995894","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
Reminiscences of Past Days with Prof. Dr. Mohammad Ali Asgar, Fellow, BAS 与穆罕默德·阿里·阿斯加尔教授，英国科学系研究员追忆往事
Journal of Bangladesh Academy of Sciences Pub Date : 2021-03-04 DOI: 10.3329/JBAS.V44I2.52283
M. S. Ali
{"title":"Reminiscences of Past Days with Prof. Dr. Mohammad Ali Asgar, Fellow, BAS","authors":"M. S. Ali","doi":"10.3329/JBAS.V44I2.52283","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.52283","url":null,"abstract":"Abstract not available. \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, iv-vii, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82764617","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
Approximate solution of nonlinear differential system with time variation 时变非线性微分系统的近似解
Journal of Bangladesh Academy of Sciences Pub Date : 2021-01-19 DOI: 10.3329/JBAS.V44I2.51456
Rezaul Karim, Pinakee Dey, Saikh Shahjahan Miah
{"title":"Approximate solution of nonlinear differential system with time variation","authors":"Rezaul Karim, Pinakee Dey, Saikh Shahjahan Miah","doi":"10.3329/JBAS.V44I2.51456","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.51456","url":null,"abstract":"this paper develops a reliable algorithm based on the general Struble’s technique and extended KBM method for solving nonlinear differential systems. Moreover, we find a solution based on the KBM and general Struble’s technique of nonlinear autonomous systems with time variation, which is more powerful than the existing perturbation method. Finally, results are discussed, primarily to enrich the physical prospects, and shown graphically by utilizing MATHEMATICA and MATLAB software. \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 121-130, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"15 1","pages":"121-130"},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73166532","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
Anti-fungal secondary metabolites and hydrolytic enzymes from rhizospheric bacteria in crop protection: a review 根际细菌抗真菌次生代谢物和水解酶在作物保护中的研究进展
Journal of Bangladesh Academy of Sciences Pub Date : 2021-01-19 DOI: 10.3329/JBAS.V44I2.51452
Farhana Tasnim Chowdhury, Nazia R. Zaman, M. R. Islam, Haseena Khan
{"title":"Anti-fungal secondary metabolites and hydrolytic enzymes from rhizospheric bacteria in crop protection: a review","authors":"Farhana Tasnim Chowdhury, Nazia R. Zaman, M. R. Islam, Haseena Khan","doi":"10.3329/JBAS.V44I2.51452","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.51452","url":null,"abstract":"Plant growth promoting rhizobacteria (PGPR) residing in soil rhizosphere provide enormous beneficial effects to a plant host producing diverse secondary metabolites and enzymes useful for plant growth and protection. Siderophores, antibiotics, volatile compounds and hydrolytic enzymes are the major molecules secreted by the PGPRs, which have substantial antifungal properties and can provide plant protection. These compounds are responsible for the lysis and hyperparasitism of antagonists against deleterious fungal pathogens. Siderophore-producing PGPRs function by depriving the pathogen of iron nutrition. Antibiotics have been reported to be involved in the suppression of different fungal pathogens by inducing fungistasis, inhibition of spore germination, lysis of fungal mycelia. The PGPRs also secrete a wide range of low molecular weight volatile organic compounds (VOCs) that inhibit mycelial growth, sporulation, germination of phytophathogenic fungi, etc. Hydrolytic enzymes, mostly chitinase, protease and cellulose, lyse the cell wall of fungi. Therefore, plant growth-promoting rhizobacteria can be considered as an effective, eco-friendly, and sustainable replacement to the chemical fungicides. There are many PGPRs that perform very well in controlled conditions but not in field conditions, and hence the commercializing of hese products is not easy.  Development of formulations with increased shelf life, a broad spectrum of action and consistent performance under field conditions can pave the way for commercializing the PGPRs at a faster rate. \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 69-84, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"60 1","pages":"69-84"},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73584889","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: 5
Proximate analysis and nutrient content estimation of marine fish species of saint martin’s island in Bangladesh 孟加拉圣马丁岛海鱼种类近似值分析及营养成分估计
Journal of Bangladesh Academy of Sciences Pub Date : 2021-01-19 DOI: 10.3329/JBAS.V44I2.51462
Tanhaul Islam, M. Shoeb, Md. Nazrul Islam, Rafiza Islam, M. Rhaman, Nilufar Nahar
{"title":"Proximate analysis and nutrient content estimation of marine fish species of saint martin’s island in Bangladesh","authors":"Tanhaul Islam, M. Shoeb, Md. Nazrul Islam, Rafiza Islam, M. Rhaman, Nilufar Nahar","doi":"10.3329/JBAS.V44I2.51462","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.51462","url":null,"abstract":"Saint Martin’s Island is a unique coral island in Bangladesh. Locally available fish species (both fresh and dry fish) were collected from the island to study moisture, ash, fat, protein content, fatty acid compositions and heavy metals. Fish oil was extracted from samples by solid phase dispersion method and fatty acid compositions were analyzed by GC-FID. Protein content in fresh fish samples was determined by the micro-Kjeldahl method.  Homogenized samples were digested, filtered and analyzed by AAS for determining toxic heavy metals in the fish samples. The fresh fishes appear to be a good source of dietary protein. \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 191-195, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"80 1","pages":"191-195"},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81849600","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
Numerical computation of natural ventilation system at the top floor of a multistory building in Dhaka city 达卡市某多层建筑顶层自然通风系统的数值计算
Journal of Bangladesh Academy of Sciences Pub Date : 2021-01-19 DOI: 10.3329/JBAS.V44I2.51460
Zavid Iqbal Bangalee, M. Ferdows, Roushanara Begum
{"title":"Numerical computation of natural ventilation system at the top floor of a multistory building in Dhaka city","authors":"Zavid Iqbal Bangalee, M. Ferdows, Roushanara Begum","doi":"10.3329/JBAS.V44I2.51460","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.51460","url":null,"abstract":"urban environment studies have become more and more critical in the past decades because of the rapid development of urbanization in industrial countries. Temperature, velocity, average mass flow, etc. at different unit on the top floor of a multistory building are discussed here. For the numerical computation of the air flow inside the building rooms, the k−ε turbulence model is used. ANSYS CFX software is used to solve the governing equations. For modeling the building, Bangladesh's national building code is applied. The turbulence model is also validated by comparing the result with an experimental result and a numerical result. Satisfactory ventilation rate is also ensured by comparing the result with ANSI/ASHRAE Standard 62.1-2004. \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 161-178, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"42 1","pages":"161-178"},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77647173","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
Relative renal functions for children using 99mTC-DTPA and 99mTC-DMSA 99mTC-DTPA和99mTC-DMSA对儿童相对肾功能的影响
Journal of Bangladesh Academy of Sciences Pub Date : 2021-01-19 DOI: 10.3329/JBAS.V44I2.51455
F. Akter, Nure Alam Abdullah, M. A. Momin, M. Reza
{"title":"Relative renal functions for children using 99mTC-DTPA and 99mTC-DMSA","authors":"F. Akter, Nure Alam Abdullah, M. A. Momin, M. Reza","doi":"10.3329/JBAS.V44I2.51455","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.51455","url":null,"abstract":"Radionuclides are widely used to study the relative renal functions (RRFs) for kidney patients. This work reports the determination of the RRFs using the technetium-99m dimercaptosuccinic acid (99mTc-DMSA) and technetium-99m diethylenetriamine-pentaacetic acid (99mTc-DTPA) for children having kidney diseases. The two methods are then compared to find the choice of scintigraphy for a particular type of disease. A total of 65 child kidney patients of ages 5 months - 16 years were the representative samples of the study. The mean RRFs calculated with 99mTc-DTPA was found as  and respectively, for the left and right kidneys. On the other hand, the values are  and  respectively, using 99mTc-DMSA. a significant positive correlation () were found between the RRFs calculated with the two scanning methods in Pearson correlation analysis. In one way ANOVA test, we did not find any difference between the RRFs calculated with 99mTc-DTPA and 99mTc-DMSA between the left and right kidneys. In Bland-Altman Plots, no mean difference was found between the two scanning methods and the correlation limit lies between -13.5 and12.6. The present study suggests using a single method for a particular type of disease. 99mTc-DMSA is the primary choice for the evaluation of RRF since it is easy, inexpensive and also provides cortical morphology, renal scar and cyst evaluation. But for glomerular filtration rate and renogram curve, 99mTc-DTPA should be the obvious selection as 99mTc-DMSA fails to provide any information for these cases. \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 109-119, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"27 1","pages":"109-119"},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85113606","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
New variants of the bottleneck tower of Hanoi problems 新变种瓶颈塔的河内问题
Journal of Bangladesh Academy of Sciences Pub Date : 2021-01-19 DOI: 10.3329/JBAS.V44I2.51463
A. Majumdar
{"title":"New variants of the bottleneck tower of Hanoi problems","authors":"A. Majumdar","doi":"10.3329/JBAS.V44I2.51463","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.51463","url":null,"abstract":"This paper considers two variants of the bottleneck Tower of Hanoi problems with n (≥1) discs and the bottleneck size b (≥2), which allows violation of the “divine rule” (at most) once. Denoting by MB3(n, b) the minimum number of moves required to solve the new variant of the bottleneck Tower of Hanoi problem, an explicit form of MB3(n, b) is found. Also, MB4(n, b) denotes the minimum number of moves required to solve the new variant of the bottleneck Reve’s puzzle, a closed-form expression of MB4(n, b) is derived. \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 197-200, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"8 1","pages":"197-200"},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84355579","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
Genetic variability and character association of Bangladeshi popular varieties of mustard (Brassica rapa L.) 孟加拉国流行品种芥菜的遗传变异及性状关联
Journal of Bangladesh Academy of Sciences Pub Date : 2021-01-19 DOI: 10.3329/JBAS.V44I2.51454
F. Sultana, J. Rahman, M. Hasan
{"title":"Genetic variability and character association of Bangladeshi popular varieties of mustard (Brassica rapa L.)","authors":"F. Sultana, J. Rahman, M. Hasan","doi":"10.3329/JBAS.V44I2.51454","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.51454","url":null,"abstract":"A study was conducted to estimate genetic variability, correlation and direct and indirect effects of yield attributes on seed yield of fourteen Bangladeshi varieties of Brassica rapa. High heritability coupled with high genetic advance was recorded in a number of secondary branches plant-1, a number of siliqua plant-1 and a number of seeds siliqua-1 indicating the effects of additive genes in controlling the traits. Significant and positive association with seed yield plant-1 were observed in the number of primary branches plant-1, a number of seeds siliqua-1, while a negative association was found in days to maturity. The path analysis revealed that the days to first flowering, number of secondary branches plant-1 and 1000 seed weight were the main contributors to seed yield. The results suggest that days to first flowering, number of primary and secondary branches plant-1 and 1000 seed weight may be considered for selection to improve the seed yield in B. rapa. \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 95-107, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"73 1","pages":"95-107"},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83721558","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
Fuzzy pairwise regular bitopological spaces in quasi-coincidence sense 准重合意义上的模糊对偶正则双拓扑空间
Journal of Bangladesh Academy of Sciences Pub Date : 2021-01-19 DOI: 10.3329/JBAS.V44I2.51458
R. Amin, S. Hossain, Saikh Shahjahan Miah
{"title":"Fuzzy pairwise regular bitopological spaces in quasi-coincidence sense","authors":"R. Amin, S. Hossain, Saikh Shahjahan Miah","doi":"10.3329/JBAS.V44I2.51458","DOIUrl":"https://doi.org/10.3329/JBAS.V44I2.51458","url":null,"abstract":"This paper introduces three notions of fuzzy pairwise regular between bitopological spaces in quasi-coincidence sense. Then, we investigate some relations between ours and other counterparts. We observe that all these concepts are preserved under one-one, onto, fuzzy closed, fuzzy open, and fuzzy continuous mappings. Also, the hereditary property is satisfied by these concepts. \u0000Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 139-143, 2020","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"37 1","pages":"139-143"},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72900470","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
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信