Pub Date : 2021-07-15DOI: 10.3329/JBAS.V45I1.54433
S. Pervin, J. Dewan, A. M. Apon, M. Siraz, S. Yeasmin
The radioactivity of naturally occurring radionuclides 226Ra, 232Th, and 40K was determined in thirteen cement samples collected from different manufactures of Dhaka city. The measurement was performed by gammaray spectrometry system using high purity germanium (HPGe) detector. The average activity of 226Ra, 232Th, and 40K in cement samples are fon und to be 30.23±15.04 Bqkg-1, 20.10±11.76 Bqkg-1 and 145.27±24.14 Bqkg-1, respectively. The average values of radium equivalent activity (Raeq), absorbed dose rates (D), internal hazard and external hazard index (Hex), and annual effective dose equivalent are 370 Bqkg-1, 0.27, 0.18, and 27.99 nGyh-1, respectively. The average annual effective dose is found 0.13 mSvy-1, which is less than the recommended value (1 mSvy-1) by the International Commission on Radiological Protection (ICRP-60, 1990), as the maximum permissible annual effective dose to the members of the public. The present study results are discussed and compared with those reported in similar studies and with internationally recommended values. No artificial radioactivity was found in the present study. The results show that the analyzed cement samples do not pose any significant radiation hazard from naturally occurring radionuclides 226Ra, 232Th and 40K reported here and also considered safe for use in buildings construction. J. Bangladesh Acad. Sci. 45(1); 95-104: June 2021
{"title":"Measurement of natural radioactivity and its health hazards associated with the use of different branded cement samples collected from different manufactures in Dhaka city using gamma spectrometry","authors":"S. Pervin, J. Dewan, A. M. Apon, M. Siraz, S. Yeasmin","doi":"10.3329/JBAS.V45I1.54433","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54433","url":null,"abstract":"The radioactivity of naturally occurring radionuclides 226Ra, 232Th, and 40K was determined in thirteen cement samples collected from different manufactures of Dhaka city. The measurement was performed by gammaray spectrometry system using high purity germanium (HPGe) detector. The average activity of 226Ra, 232Th, and 40K in cement samples are fon und to be 30.23±15.04 Bqkg-1, 20.10±11.76 Bqkg-1 and 145.27±24.14 Bqkg-1, respectively. The average values of radium equivalent activity (Raeq), absorbed dose rates (D), internal hazard and external hazard index (Hex), and annual effective dose equivalent are 370 Bqkg-1, 0.27, 0.18, and 27.99 nGyh-1, respectively. The average annual effective dose is found 0.13 mSvy-1, which is less than the recommended value (1 mSvy-1) by the International Commission on Radiological Protection (ICRP-60, 1990), as the maximum permissible annual effective dose to the members of the public. The present study results are discussed and compared with those reported in similar studies and with internationally recommended values. No artificial radioactivity was found in the present study. The results show that the analyzed cement samples do not pose any significant radiation hazard from naturally occurring radionuclides 226Ra, 232Th and 40K reported here and also considered safe for use in buildings construction. \u0000J. Bangladesh Acad. Sci. 45(1); 95-104: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82549407","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 : 2021-07-15DOI: 10.3329/JBAS.V45I1.54262
Sazia Mahmood, M. Kawser, S. Akther, A. Rahim
Child dietary diversity (CDD) is an important nutritional outcome measuring the economic ability of a household to access a variety of foods during a determined period. Relating household income to CDD and child anthropometric failure, a cross-sectional study was conducted among 275 selected Dhaka city slum children of 6-12 years. Prevalence of stunting (18%), wasting (19.4%), and underweight (22%) among them were found similar to the current national figure. However, a sizable number of households showed increased DDS (>5), thereby indicating an increased household purchasing power (PP). Bivariate regression analysis showed that children from lower family income (≤6000 BDT) were 3 times more likely to be stunted as compared to children with greater family income [Unadjusted OR=3.097, 95% CI (1.578-6.077), p=0.001]. Furthermore, logistic regression showed that children who had <5 DDS were 2 times more likely to be stunted than children who had ≥5 DDS [Adjusted OR=2.127, 95% CI (1.051- 4.305), p=0.036]. Therefore, an inverse association has been found between CDD and their anthropometric failure. J. Bangladesh Acad. Sci. 45(1); 85-94: June 2021
儿童膳食多样性(CDD)是衡量一个家庭在一定时期内获得各种食物的经济能力的一项重要营养指标。将家庭收入与CDD和儿童人体测量失败联系起来，对选定的275名6-12岁的达卡城市贫民窟儿童进行了横断面研究。其中发育迟缓(18%)、消瘦(19.4%)和体重不足(22%)的患病率与目前的全国数字相似。然而，相当数量的家庭的DDS增加(>5)，从而表明家庭购买力(PP)增加。双变量回归分析显示，家庭收入较低(≤6000 BDT)的儿童发育迟缓的可能性是家庭收入较高儿童的3倍[未经调整OR=3.097, 95% CI (1.578-6.077)， p=0.001]。此外，logistic回归显示，DDS <5的儿童发育迟缓的可能性是DDS≥5的儿童的2倍[校正OR=2.127, 95% CI (1.051- 4.305)， p=0.036]。因此，在CDD和他们的人体测量失败之间发现了负相关。[j] .科学通报，2004 (1);85-94: 2021年6月
{"title":"Effectors of income-child health gradient: Role of dietary diversity on child nutritional status in selected slums of Dhaka city","authors":"Sazia Mahmood, M. Kawser, S. Akther, A. Rahim","doi":"10.3329/JBAS.V45I1.54262","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54262","url":null,"abstract":"Child dietary diversity (CDD) is an important nutritional outcome measuring the economic ability of a household to access a variety of foods during a determined period. Relating household income to CDD and child anthropometric failure, a cross-sectional study was conducted among 275 selected Dhaka city slum children of 6-12 years. Prevalence of stunting (18%), wasting (19.4%), and underweight (22%) among them were found similar to the current national figure. However, a sizable number of households showed increased DDS (>5), thereby indicating an increased household purchasing power (PP). Bivariate regression analysis showed that children from lower family income (≤6000 BDT) were 3 times more likely to be stunted as compared to children with greater family income [Unadjusted OR=3.097, 95% CI (1.578-6.077), p=0.001]. Furthermore, logistic regression showed that children who had <5 DDS were 2 times more likely to be stunted than children who had ≥5 DDS [Adjusted OR=2.127, 95% CI (1.051- 4.305), p=0.036]. Therefore, an inverse association has been found between CDD and their anthropometric failure. \u0000J. Bangladesh Acad. Sci. 45(1); 85-94: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78514713","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 : 2021-07-15DOI: 10.3329/JBAS.V45I1.54259
T. Sultana, A. Akter, F. Zohra, Q. Rahman, Y. Kabir
The serum level of zinc and vitamin E were measured to understand the association of various nutrients on acne pathogenesis. Both zinc and vitamin E are antioxidants used as a supplement in acne treatment. However, their effect and status in acne patients are not fully understood. This study included 48 acne patients and 48 sex- and age-matched healthy controls. The zinc and vitamin E concentration was measured in the serum by flame atomic absorption spectroscopy (AAS) and HPLC methods. Compared to the healthy control, a significant deficiency of serum vitamin E level in acne patients (p<0.001) was found, although the patients were not deficient in serum zinc level (p=0.22). In addition, female acne patients had a slightly lower zinc level than male patients (p=0.06). The low serum vitamin E level suggests that supplementation of vitamin E might be helpful in acne treatment. However, further studies are required to understand the dose and mechanism of vitamin E supplements in acne treatment. J. Bangladesh Acad. Sci. 45(1); 49-58: June 2021
{"title":"Association of serum zinc and vitamin E levels with Acne vulgarisin Bangladeshi acne patients","authors":"T. Sultana, A. Akter, F. Zohra, Q. Rahman, Y. Kabir","doi":"10.3329/JBAS.V45I1.54259","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54259","url":null,"abstract":"The serum level of zinc and vitamin E were measured to understand the association of various nutrients on acne pathogenesis. Both zinc and vitamin E are antioxidants used as a supplement in acne treatment. However, their effect and status in acne patients are not fully understood. This study included 48 acne patients and 48 sex- and age-matched healthy controls. The zinc and vitamin E concentration was measured in the serum by flame atomic absorption spectroscopy (AAS) and HPLC methods. Compared to the healthy control, a significant deficiency of serum vitamin E level in acne patients (p<0.001) was found, although the patients were not deficient in serum zinc level (p=0.22). In addition, female acne patients had a slightly lower zinc level than male patients (p=0.06). The low serum vitamin E level suggests that supplementation of vitamin E might be helpful in acne treatment. However, further studies are required to understand the dose and mechanism of vitamin E supplements in acne treatment. \u0000J. Bangladesh Acad. Sci. 45(1); 49-58: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"2020 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75096601","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 : 2021-07-15DOI: 10.3329/JBAS.V45I1.54864
A. Alim
Abstract not available J. Bangladesh Acad. Sci. 45(1); 1-11: June 2021
摘要[j] .孟加拉科学，45(1);1-11: 2021年6月
{"title":"Late Prof. Dr. Md. Anwar Hossain (August 19, 1944 - May 27, 2021)","authors":"A. Alim","doi":"10.3329/JBAS.V45I1.54864","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54864","url":null,"abstract":"Abstract not available \u0000J. Bangladesh Acad. Sci. 45(1); 1-11: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83961531","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 : 2021-07-15DOI: 10.3329/JBAS.V45I1.54862
Mesbahuddin Ahmed
Abstract Not Available J. Bangladesh Acad. Sci. 45(1); i: June 2021
[j] .中国社会科学，45(1);i: 2021年6月
{"title":"Late Professor Dr. M.A.M. Muhtasham Hussain (1929-2021)","authors":"Mesbahuddin Ahmed","doi":"10.3329/JBAS.V45I1.54862","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54862","url":null,"abstract":"Abstract Not Available \u0000J. Bangladesh Acad. Sci. 45(1); i: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90267253","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 : 2021-07-15DOI: 10.3329/JBAS.V45I1.54263
M. H. Suhag, KM Anis Ul Haque, Zobaidul Hossen, A. Azad, M. Younus
The bacterial isolate Bacillus sp. AZ28, obtained from industrial effluent, demonstrates a great capacity to degrade various azo dyes (methyl orange (MO), magneson I (MI), novacron dark blue (NDB), and novacron red FN 3GF (NRF3)), and azo dye-containing textile effluent (TE). The degradation was evident by decolorization of dyes, and the decolorization efficiency of 84-95% was achieved within 14-72 h under optimum conditions, such as 37˚C, pH 7, inoculation size 8%, 1% glucose, and 1% beef extract. The extent of decolorization of individual dye was determined by UV–Vis spectroscopy, and products of biodegradation were analyzed by FTIR spectroscopy and TLC analyses. Chemical analysis showed that the COD and BOD values were significantly reduced after treatment. Thus, the biodegradation ability under mild conditions suggests that Bacillus sp. AZ28 has potential in textile effluent treatment. J. Bangladesh Acad. Sci. 45(1); 117-122: June 2021
{"title":"Biodegradation of azo dyes and dyes present in textile wastewaters using Bacillus sp. az28, obtained from industrial effluents","authors":"M. H. Suhag, KM Anis Ul Haque, Zobaidul Hossen, A. Azad, M. Younus","doi":"10.3329/JBAS.V45I1.54263","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54263","url":null,"abstract":"The bacterial isolate Bacillus sp. AZ28, obtained from industrial effluent, demonstrates a great capacity to degrade various azo dyes (methyl orange (MO), magneson I (MI), novacron dark blue (NDB), and novacron red FN 3GF (NRF3)), and azo dye-containing textile effluent (TE). The degradation was evident by decolorization of dyes, and the decolorization efficiency of 84-95% was achieved within 14-72 h under optimum conditions, such as 37˚C, pH 7, inoculation size 8%, 1% glucose, and 1% beef extract. The extent of decolorization of individual dye was determined by UV–Vis spectroscopy, and products of biodegradation were analyzed by FTIR spectroscopy and TLC analyses. Chemical analysis showed that the COD and BOD values were significantly reduced after treatment. Thus, the biodegradation ability under mild conditions suggests that Bacillus sp. AZ28 has potential in textile effluent treatment. \u0000J. Bangladesh Acad. Sci. 45(1); 117-122: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83858847","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 : 2021-07-15DOI: 10.3329/JBAS.V45I1.54258
Din Islam, Samiron Kumar, T. A. Chowdhury, Mahe Zame Sarker, H. Nishino, Aminul Haque, M. M. Rahman
A series of six title compounds have been prepared using 3-amino- 6-chloropyridazine as starting material collected from commercial sources and were characterized by IR, 1H NMR, and high-resolution mass spectral (HRMS) data. The method involves three steps: Suzuki-Miyaura cross-coupling reaction, N(2)-alkylation, and acid hydrolysis, respectively, to obtain final products with good yields. According to Lipinski's rule of five and Veber's rule, pharmacokinetics studies of the synthesized compounds showed that all the parameters were in between the permissible limits. The toxicity parameters were low for the compounds to act as drugs. J. Bangladesh Acad. Sci. 45(1); 37-47: June 2021
{"title":"Synthesis, characterization and pharmacokinetic studies of 4-(3-aryl-1, 6-dihydro-6-iminopyridazin-1-yl)butanoic acid hydrochlorides","authors":"Din Islam, Samiron Kumar, T. A. Chowdhury, Mahe Zame Sarker, H. Nishino, Aminul Haque, M. M. Rahman","doi":"10.3329/JBAS.V45I1.54258","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54258","url":null,"abstract":"A series of six title compounds have been prepared using 3-amino- 6-chloropyridazine as starting material collected from commercial sources and were characterized by IR, 1H NMR, and high-resolution mass spectral (HRMS) data. The method involves three steps: Suzuki-Miyaura cross-coupling reaction, N(2)-alkylation, and acid hydrolysis, respectively, to obtain final products with good yields. According to Lipinski's rule of five and Veber's rule, pharmacokinetics studies of the synthesized compounds showed that all the parameters were in between the permissible limits. The toxicity parameters were low for the compounds to act as drugs. \u0000J. Bangladesh Acad. Sci. 45(1); 37-47: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85459761","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 : 2021-07-15DOI: 10.3329/JBAS.V45I1.54256
A. Sarker, Akml Rahman, T. Debnath, A. Hussain
Bi2Mn4O10 was synthesized from corresponding metal salts in glycerin by using an organic precursor-based glycerin nitrate method. The precursor was heated at various temperatures (300 – 800 °C) for about 18 hours to determine the lowest synthesis temperature for the formation of Bi2Mn4O10. The XRD patterns of the calcined samples revealed that the desired mullite type phase started to form at 600 °C, which became more crystalline with further increase of calcination temperature. Attempts were also taken to prepare chromium and cobalt incorporated solid solution series with nominal composition Bi2MxMn4-xO10 (M = Cr3+ and Co3+) by the same procedure. The XRD data of these series exhibited mullite type single phase up to x = 0.7 and 0.1 compositions for chromium and cobalt, respectively. For further insertion of M, an extra phase appeared along with the mullite type phase. J. Bangladesh Acad. Sci. 45(1); 13-26: June 2021
{"title":"Synthesis and characterization of a solid solution series of the type Bi2MxMn4-xO10 (M = Cr3+, Co3+ and 0.0 ≤ x ≤ 2.0.)","authors":"A. Sarker, Akml Rahman, T. Debnath, A. Hussain","doi":"10.3329/JBAS.V45I1.54256","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54256","url":null,"abstract":"Bi2Mn4O10 was synthesized from corresponding metal salts in glycerin by using an organic precursor-based glycerin nitrate method. The precursor was heated at various temperatures (300 – 800 °C) for about 18 hours to determine the lowest synthesis temperature for the formation of Bi2Mn4O10. The XRD patterns of the calcined samples revealed that the desired mullite type phase started to form at 600 °C, which became more crystalline with further increase of calcination temperature. Attempts were also taken to prepare chromium and cobalt incorporated solid solution series with nominal composition Bi2MxMn4-xO10 (M = Cr3+ and Co3+) by the same procedure. The XRD data of these series exhibited mullite type single phase up to x = 0.7 and 0.1 compositions for chromium and cobalt, respectively. For further insertion of M, an extra phase appeared along with the mullite type phase. \u0000J. Bangladesh Acad. Sci. 45(1); 13-26: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88069384","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 : 2021-07-15DOI: 10.3329/JBAS.V45I1.54264
A. Majumdar
This paper gives some properties related to the Diophantine equations a2 = b2 ± bc +c2. It has been shown that, in some cases, each of the two Diophantine equations has multiple solutions. The formulas for multiple solutions are derived. J. Bangladesh Acad. Sci. 45(1); 123-125: June 2021
{"title":"On some properties of the Diophantine equations a2 = b2 ± bc +c2","authors":"A. Majumdar","doi":"10.3329/JBAS.V45I1.54264","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54264","url":null,"abstract":"This paper gives some properties related to the Diophantine equations a2 = b2 ± bc +c2. It has been shown that, in some cases, each of the two Diophantine equations has multiple solutions. The formulas for multiple solutions are derived. \u0000J. Bangladesh Acad. Sci. 45(1); 123-125: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84115097","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 : 2021-07-15DOI: 10.3329/JBAS.V45I1.54265
Shah Mohammad Shahidul Islam, A. Majumdar
This paper provides an analytical method of finding all the (positive, integral) solutions of the Diophantine equation z2 = k(k2+3). We also prove analytically that the Diophantine equation z2 = k(k2+12) has no positive, integer solution. J. Bangladesh Acad. Sci. 45(1); 127-129: June 2021
{"title":"On the Diophantine equations z2 = k(k2 + 3) and z2 = k(k2 + 12)","authors":"Shah Mohammad Shahidul Islam, A. Majumdar","doi":"10.3329/JBAS.V45I1.54265","DOIUrl":"https://doi.org/10.3329/JBAS.V45I1.54265","url":null,"abstract":"This paper provides an analytical method of finding all the (positive, integral) solutions of the Diophantine equation z2 = k(k2+3). We also prove analytically that the Diophantine equation z2 = k(k2+12) has no positive, integer solution. \u0000J. Bangladesh Acad. Sci. 45(1); 127-129: June 2021","PeriodicalId":15109,"journal":{"name":"Journal of Bangladesh Academy of Sciences","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90809573","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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