Bangladesh Atomic Energy Commission

www.baec.org.bd
Dhaka, Bangladesh

Bangladesh Atomic Energy Commission is a scientific research organization and regulatory body of Bangladesh. Its main objective is to promote use of atomic energy for peaceful purposes It was established on 27 February 1973., after the liberation of Bangladesh. Wikipedia.


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Rajib M.,Saitama University | Rajib M.,Bangladesh Atomic Energy Commission | Oguchi C.T.,Saitama University
Acta Geochimica | Year: 2017

This study examines the use of intact samples as an alternative to powder in conventional batch sorption studies to determine the distribution coefficient (Kd). Stable cesium (133Cs) and strontium (87Sr) were used under specified geochemical conditions to compare the Kd values of powder and block pumice tuff samples. The aim of the study was to infer any Kd difference under laboratory and field conditions. Kd values for block samples were found to be less than one order of magnitude lower than powder materials for both Cs and Sr on fresh tuff, and more than one order of magnitude lower in oxidized tuff. Destruction of micropores in oxidized tuff was estimated to be mainly responsible for reducing Kd values in oxidized tuff. However, approximately one order of magnitude difference in Kd values indicates that homogenously prepared intact samples can be used for sorption coefficient measurement at closer to in situ conditions. Pore size distribution analysis using mercury intrusion porosimetry revealed that lower Kd values on block samples result from lower surface area available as sorption sites due to inaccessible closed pores in the intact solid. © 2017 Science Press, Institute of Geochemistry, CAS and Springer-Verlag Berlin Heidelberg


News Article | June 14, 2017
Site: worldmaritimenews.com

The High Court of Bangladesh has halted the breaking of the floating oil production and storage tanker, North Sea Producer, following discovery of radioactive substances aboard the vessel. The radioactive substances accumulated over the years of processing crude oil were found in inside pipes, with radioactive level above permissible, Danish TV2 reported. “Following a petition filed by our member Bangladesh Environmental Lawyers Association (BELA), the courts have maintained the halt in breaking the ship,” NGO Shipbreaking Platform confirmed to World Maritime News. As explained, a division bench of the Bangladesh High Court has directed the Bangladesh Atomic Energy Commission (BAEC), the Bangladesh Atomic Energy Regulatory Authority (BAERA), and the Marine Port Initiative (MPI) of the Customs to produce their reports on radioactive contamination of the FPSO before the court within 10 weeks. At the same time, UK environmental authorities DEFRA are said to be investigating the circumstances surrounding the export of the hazardous waste laden North Sea Producer from the Tees river in the UK to Bangladesh. North Sea Producer, previously owned by Maersk, left the UK in May 2016 and was towed to Bangladesh, where it arrived on 14 August 2016, only to be beached two days later at the Janata Steel shipbreaking yard in Chittagong. The NGO Shipbreaking Platform said back in October 2016 that the vessel likely contained large amounts of highly contaminated residues including natural occurring radioactive material (NORM). Bangladeshi shipbreaking yards are not equipped with any infrastructure that could safely remove and dispose of such toxic wastes. As disclosed by Maersk at the time, the ship was sold for further operational use, without revealing the identity of the buyer. “The Producer was sold by Maersk to cash buyers GMS. It is obvious that Maersk knew that the ship would end up being scrapped on a South Asian beach putting both workers and the environment at risk. We have called upon the UK to hold both Maersk and GMS accountable for the illegal export of this toxic laden ship. The case is very indicative of the dodgy practice of selling ships for scrap via middle men known as cash buyers,” Ingvild Jenssen, Director of the NGO Shipbreaking said. According to the platform, the North Sea Producer was allowed into Bangladesh based on a fake certificate stating that the tanker did not contain any hazardous materials. “A false declaration dated 3 August, 2016 was submitted to the Bangladesh authorities by the St Kitts and Nevis based post box company called Conquistador Shipping Corporation set up by cash buyers Global Marketing Systems (GMS). The Bangladesh Department of Environment however never issued environmental clearance in favor of breaking of the vessel,” the platform added. The vessel was owned and operated by UK-based North Sea Production Company, a joint venture between Danish Maersk and Brazilian oil & gas company Odebrecht, with 50% ownership each, and operated in the North Sea as an FPSO. Maersk is yet to reply to World Maritime News on the matter.


Mondal M.A.H.,Masdar Institute of Science and Technology | Mondal M.A.H.,Bangladesh Atomic Energy Commission | Kennedy S.,Masdar Institute of Science and Technology | Mezher T.,Masdar Institute of Science and Technology
Applied Energy | Year: 2014

This paper presents an evaluation of future energy-supply strategies for the United Arab Emirates (UAE) power sector. This paper also identifies the prospects for the further economic development of the country while addressing energy security issues and mitigating environmental impacts. It explores technology choices to meet the future demand in the most cost efficient way based on existing and innovated technologies. The analyses are done for UAE energy system applying MARKAL model. Different policies such as a CO2 emission reduction constraint, renewable energy production targets, and subsidy minimization through international benchmarking for domestic gas prices are applied for this analysis. The results show that the alternative policy scenarios directly allocate clean advanced and renewable technologies to generate electricity. The alternative policy scenarios reduce CO2 emissions in power sector. The simulation results from model show that alternative sustainable energy development policies expected total system cost is not significantly higher. The cumulative system cost increases, relative to the base scenario by 9% and 11% for CO2 emission reduction and renewable target production scenarios, respectively. Use of primary resources to meet the demand is reduced and the supply of primary energy resources is diversified. © 2013 Elsevier Ltd.


Ali M.P.,Bangladesh Rice Research Institute | Chowdhury T.R.,Bangladesh Atomic Energy Commission
Euphytica | Year: 2014

The brown plant hopper, Nilaparvata lugens Stål (Hemiptera: Delphacidae) is an important pest of rice, Oryza sativa L. (Poales: Poaceae). The need for N. lugens-resistant rice varieties able to cope with stressful conditions obviously requires that breeders better comprehend the physiology and genetic control of N. lugens resistance. In spite of several good reviews recently published, an integrated vision of current information on rice resistance to N. lugens stress has been lacking. Here the most recent data on the N. lugens resistance rice varieties is presented. An inventory is included of N. lugens resistance donors available for breeding programs and a comprehensive survey of current work on gene maps, chromosomal locations, quantitative trait locus (QTL) detection and cloning as well as marker-assisted selection to introgress favorable alleles into chosen rice lines. A schematic view of the rice chromosomes on which N. lugens resistance QTLs and genes are positioned is included. The graphical gene locus of major resistance genes and QTL positions that have been detected on different chromosomes involved in N. lugens response is also presented. We highlight missing information that could help to design better N. lugens resistant varieties, and evaluate the significance of the data presented for the future of rice breeding. © 2013 Springer Science+Business Media Dordrecht.


Nuruzzaman Khan M.,University of Dhaka | Islam J.M.M.,Bangladesh Atomic Energy Commission | Khan M.A.,Bangladesh Atomic Energy Commission
Journal of Biomedical Materials Research - Part A | Year: 2012

In this study, composite scaffolds were prepared with polyethylene oxide (PEO)-linked gelatin and tricalcium phosphate (TCP). Chitosan, a positively charged polysaccharide, was introduced into the scaffolds to improve the properties of the artificial bone matrix. The chemical and thermal properties of composite scaffolds were investigated by Fourier transform infrared spectroscopy, thermogravimetric analyzer, differential thermal analyzer. In vitro cytotoxicity of the composite scaffold was also evaluated and the sample showed no cytotoxic effect. The morphology was studied by SEM and light microscopy. It was observed that the prepared scaffold had an open interconnected porous structure with pore size of 230-354 μm, which is suitable for osteoblast cell proliferation. The mechanical properties were assessed and it was found that the composite had compressive modulus of 1200 MPa with a strength of 5.2 MPa and bending modulus of 250 MPa having strength of 12.3 MPa. The porosity and apparent density were calculated and it was found that the incorporation of TCP can reduce the porosity and water absorption. It was revealed from the study that the composite had a 3D porous microstructure and TCP particles were dispersed evenly among the crosslinked gelatin/chitosan scaffold. © 2012 Wiley Periodicals, Inc.


Hawila D.,Masdar Institute of Science and Technology | Mondal M.A.H.,Masdar Institute of Science and Technology | Mondal M.A.H.,Bangladesh Atomic Energy Commission | Kennedy S.,Masdar Institute of Science and Technology | Mezher T.,Masdar Institute of Science and Technology
Renewable and Sustainable Energy Reviews | Year: 2014

Energy is an important input for national socio-economic development. The current trends of energy supply and demand are not sustainable because of the expected huge gap between demand and supply in the future. The fossil fuels resources are limited and use of these fuels has a negative impact in the environment. Holding energy at a secure level and global climate at a safe level require integration of renewable energy technologies (RETs) in the energy supply-mix. Development of RETs in a country depends on its renewable energy readiness (RE-Readiness) that indicates the gaps and strengths of their development. In light of the various initiatives proposed to turn North Africa into a renewable energy producer and extend its electricity supply to its neighboring European counties, it demands to assess the RE-Readiness. The main object of this paper is to develop and disseminate an assessment framework to find North African countries RE-Readiness for deployment of RETs. This framework is adopted in which the paper applies a consistent methodology across all the North African countries× © 2014 Elsevier Ltd. All rights reserved.


Shubhra Q.T.H.,University of Dhaka | Alam A.K.M.M.,Bangladesh Atomic Energy Commission
Radiation Physics and Chemistry | Year: 2011

Silk is a strong natural proteinous fiber and E-glass is a very strong synthetic fiber. Compression molding method was used to fabricate B. mori silk fiber reinforced polypropylene (PP) matrix composites. The tensile strength (TS), tensile modulus (TM), bending strength (BS), bending modulus (BM) and impact strength (IS) of prepared composites were 55.1MPa, 780MPa, 56.3MPa, 3450MPa and 17kJ/m2, respectively. Synthetic E-glass fiber reinforced PP based composites were fabricated in the same way and TS, TM, BS, BM, IS of E-glass fiber reinforced polypropylene composites were found to be 128.7MPa, 4350MPa, 141.6MPa, 6300MPa and 19kJ/m2, respectively. Gamma radiation is high energy ionizing radiation and was applied to increase the mechanical properties of the composites. Application of gamma ray increases the mechanical properties of silk/PP composites to a greater extent than that of E-glass/PP composites. © 2011 Elsevier Ltd.


Hossain Mondal M.A.,Bangladesh Atomic Energy Commission | Sadrul Islam A.K.M.,Islamic University of Technology
Renewable Energy | Year: 2012

This paper examines the impacts of CO 2 emission reduction targets and carbon tax on future technologies selection especially solar PV and energy use in Bangladesh power sector during 2005-2035. It also examines the co-benefits of energy security of the country. The analyses are based on a long-term energy system optimization model of Bangladesh using the MARKAL framework. The results of the study show that on a simple cost base, power generated from solar PV is not yet competitive with that of fossil fuel-based power plants. Alternative policies on CO 2 emission constraints reduce the burden of imported fuel, improve energy security and reduce environmental impacts. The results show that the introduction of the CO 2 emission reduction targets and carbon tax directly affect the shift of technologies from high carbon content fossil-based to low carbon content fossil-based and clean solar PV technologies compared to the base scenario. The cumulative net energy imports during 2005-2035 would be reduced in the range of 33-61% compared to the base scenario. The total primary energy requirement would be reduced in the range of 4.5-22.37% and the primary energy supply system would be diversified. Solar PV plays an important role in achieving reasonable energy security. © 2012 Elsevier Ltd.


Mahbubul Bashar M.,Mawlana Bhashani Science and Technology University | Khan M.A.,Bangladesh Atomic Energy Commission
Journal of Polymers and the Environment | Year: 2013

About 48 % cotton fiber is consumed as clothing materials all over the globe. It is popular for softness, versatility, absorbance and breathability. Cotton is hydrophilic in nature and therefore, it can absorb sweat from the human body and can release in the surface that makes it comfortable. But it has some inherent limitations such as wrinkle, shrinkage, low dye uptake and microbial degradation. Various approaches have been made to overcome the above limitations. Surface modification of textiles to impart antimicrobial activity, shrinkage, wrinkle resistance, decreased skin irritation, increase dye exhaustion and even enhancing fragrance is the most recent trends in textile chemistry. Various monomers, polymers and biopolymers are applied in different ways to improve different properties of cotton. Chitosan is the mostly used biopolymer in this regard for its biocompatibility, biodegradability, nontoxicity and antimicrobial activity. This paper is a short overview of the most recent development in surface modification of cotton using biopolymers such as chitosan, starch and its derivatives and some other synthetic monomers and polymers. © 2012 Springer Science+Business Media, LLC.


Rahman M.S.,Bangladesh Atomic Energy Commission | Molla A.H.,University of Rajshahi | Saha N.,University of Rajshahi | Rahman A.,Islamic University of Technology
Food Chemistry | Year: 2012

Concentrations of eight heavy metals (Pb, Cd, Ni, Cr, Cu, Zn, Mn, and As) in the muscles of ten species of fish collected from Bangshi River at Savar in Bangladesh were measured in two different seasons. The concentrations of the studied heavy metals, except Pb in Corica soborna, were found to be below the safe limits suggested by various authorities and thus gave no indication of pollution. The present study also showed that, Zn was the most and Cd was the least accumulated metal in the studied fish muscles. ANOVA analysis clearly revealed that there was a significant variation (CI = 95%) of the heavy metal concentrations in different fish species in the Bangshi River. Significant positive correlations between the heavy metal concentrations in fish muscles were also observed in both seasons. From the human health point of view, this study showed that there was no possible health risk to consumers due to intake of studied fishes under the current consumption rate. © 2012 Elsevier Ltd. All rights reserved.

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