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      • KCI등재

        Occlusion and Ion Exchange of Eutectic LiCl-KCl in H-Y Zeolite

        Prashant Bagri,Michael F. Simpson 한국방사성폐기물학회 2015 방사성폐기물학회지 Vol.13 No.S

        The US Department of Energy’s Idaho National Laboratory (INL) has been operating a molten salt electrorefiner at their facility since 1996. The baseline method for disposal of the radioactive salt is the ceramic waste process which generates glass bonded sodalite loaded with chloride salts. This process starts with the high temperature absorption of the salt into zeolite-4A. The salt-loaded zeolite is then blended with glass frit and heated to form a sintered, glass-bonded sodalite. INL is currently assessing alternatives for disposal of the ER salt because of the lengthy processing times, costly equipment and large volume of waste associated with the baseline process. An alternative process was studied, where protonated zeolite was used instead of alkali metal-substituted zeolite. It was found that the metals contained in the salt can replace the protons in the zeolite which are evolved via formation of HCl. From the standpoint of generating a nuclear waste form, the evolution of HCl gas should reduce the weight of the final waste. It has been estimated that the volume of waste produced from immobilizing the INL electrorefiner salt could be reduced by a factor of three using this process followed by sintering the fission product loaded zeolite. Equipment requirements in the hot cell would be significantly simplified, and the time to process all of the waste salt would be reduced by almost a factor of 4. An investigation into the new process has been presented here.

      • Hepatoprotective and antioxidant activity of the methanolic extract of Mucuna pruriens Bak. roots

        Mujeeb, M.,Bagri, P.,Aeri, V.,Khan, S.A. Kyung Hee Oriental Medicine Research Center 2010 Oriental pharmacy and experimental medicine Vol.10 No.2

        The methanolic extract of natural roots of Mucuna pruriens was screened for hepatoprotective and antioxidant effects in carbon tetrachloride ($CCl_4$) induced hepatotoxicity in Albino rats. The degree of protection was measured by estimating biochemical parameters like serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, total protein and level of serum bilirubin (both total and direct). The extract also reduced $CCl_4$ induced lipid peroxidation both in-vitro and in-vivo. Hepatoprotective activity of methanolic extract at dose 300 mg/kg body weight, i.p., was comparable with standard drug Silymarin (25 mg/kg, i.p.). Furthermore, histopathological experiments were also carried out to support the study.

      • Tourism in Maldives

        S,C,Bagri,S,K,Gupta,Reena Sharma 세계문화관광학회 2009 Conference Proceedings Vol.10 No.0

        The paper includes the growth of tourism since years in Maldives. The paper examines tourist development in Maldives. This will include the tourism indicators and impacts of tourism economically, socially and culturally. Although social/cultural impacts from coastal tourism development have been widely recognized in a great number of cases, it is relatively, difficult to develop technical criteria, for evaluating these impacts in quantitative terms. According to the Ministry of Tourism website, the emergence of tourism in 1972 transformed the economy of the Maldives, moving rapidly from the dependence on the fisheries sector to the tourism sector. Just in three and a half decades, the industry has become the main source of income and livelihood of the people of the Maldives. Tourism is also the country's biggest foreign currency earner and the single largest contributor to the GDP. Today, there are 89 resorts in the Maldives with a bed capacity of over 17,000, providing world class facilities for tourists whose annual arrival figure exceeds 600,000.

      • KCI등재

        Hepatoprotective and antioxidant activity of the methanolic extract of Mucuna pruriens Bak. roots

        M Mujeeb,P Bagri,V Aeri,SA Khan 경희대학교 융합한의과학연구소 2010 Oriental Pharmacy and Experimental Medicine Vol.10 No.2

        The methanolic extract of natural roots of Mucuna pruriens was screened for hepatoprotective and antioxidant effects in carbon tetrachloride (CCl4) induced hepatotoxicity in Albino rats. The degree of protection was measured by estimating biochemical parameters like serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, total protein and level of serum bilirubin (both total and direct). The extract also reduced CCl4induced lipid peroxidation both in-vitro and in-vivo. Hepatoprotective activity of methanolic extract at dose 300 mg/kg body weight, i.p., was comparable with standard drug Silymarin (25 mg/kg, i.p.). Furthermore,histopathological experiments were also carried out to support the study.

      • KCI등재

        Basis for a Minimalistic Salt Treatment Approach for Pyroprocessing Commercial Nuclear Fuel

        Michael F. Simpson,Prashant Bagri 한국방사성폐기물학회 2018 방사성폐기물학회지 Vol.16 No.1

        A simplified flowsheet for pyroprocessing commercial spent fuel is proposed in which the only salt treatment step is actinide drawdown from electrorefiner salt. Actinide drawdown can be performed using a simple galvanic reduction process utilizing the reducing potential of gadolinium metal. Recent results of equilibrium reduction potentials for Gd, Ce, Nd, and La are summarized. A description of a recent experiment to demonstrate galvanic reduction with gadolinium is reviewed. Based on these experimental results and material balances of the flowsheet, this new variant of the pyroprocessing scheme is expected to meet the objectives of minimizing cost, maximizing processing rate, minimizing proliferation risk, and optimizing the utilization of geologic repository space.

      • KCI등재

        Basis for a Minimalistic Salt Treatment Approach for Pyroprocessing Commercial Nuclear Fuel

        Simpson, Michael F.,Bagri, Prashant Korean Radioactive Waste Society 2018 방사성폐기물학회지 Vol.16 No.1

        A simplified flowsheet for pyroprocessing commercial spent fuel is proposed in which the only salt treatment step is actinide drawdown from electrorefiner salt. Actinide drawdown can be performed using a simple galvanic reduction process utilizing the reducing potential of gadolinium metal. Recent results of equilibrium reduction potentials for Gd, Ce, Nd, and La are summarized. A description of a recent experiment to demonstrate galvanic reduction with gadolinium is reviewed. Based on these experimental results and material balances of the flowsheet, this new variant of the pyroprocessing scheme is expected to meet the objectives of minimizing cost, maximizing processing rate, minimizing proliferation risk, and optimizing the utilization of geologic repository space.

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