30 research outputs found

    Mineralogical Characterization of Uranium Ores, Blends and Resulting Leach Residues from Key Lake Pilot Plant, Saskatchewan, Canada

    Get PDF
    The production and storage of uranium mine mill tailings have the potential to contaminate local groundwater and surface waters with metals and metalloids. As such, an understanding of the solids reservoirs for potential contaminants in uranium ore blends and leach residues (solid wastes generated by the milling of ore) is required to predict long-term controls on these contaminants in tailings porewaters. This study characterized the distribution of the elements of concern (EOCs; As, Mo, Ni, and Se) in uranium ores and waste rock used to blend the mill feeds in the milling process and leach residues from the Key Lake mining operation, Saskatchewan. This study also evaluated the alteration of the clay minerals in these uranium ores, waste rocks and leach residues. X-ray diffraction, electron micro-probe, and mineral liberation analyses showed that the reservoirs for As, Mo, Ni, and Se (in ores and ore blends) were dominated by sulphides including cobaltite, gersdorffite, molybdenite, pyrite, galena and chalcopyrite, secondary Ni-arsenates (annabergite?), Fe-arsenate (scorodite?) and Ni-Co/Ni-sulfates. The secondary arsenates and sulfates present in special waste were identified as major As, Mo, Ni, and Se bearing minerals and most likely the product of oxidation of arsenide-bearing sulphide minerals within the special waste rock. Analyses also showed that sulphides and arsenates occurred in trace amounts in the ores and special waste rock (0.5 to 1.0 wt %). Data showed that 55 to 90% pyrite, 36 to 51% chalcopyrite, 23 to 37% molybdenite, and 52 to 70% galena remained unleached in the leach residues after milling of the ore blends. The percentages of unleached minerals varied between mill feeds and were dependent on the grain-size distribution and the degree of mineral liberation. Cation exchange capacity (CEC) analysis indicated an increase of the CEC values in the leach residues suggesting possible evolution of 2:1 layers into high-charge layers during the milling

    Tourism in Bangladesh: A Prospects Analysis

    Get PDF
    Tourism has become a great source of foreign exchange earning in Bangladesh. It is playing an important role to create an employment opportunities in a large scale. Bangladesh has become now a new tourist zone on the map of the world. The tourism sector in Bangladesh has been gradually growing from mid-nineties to till now. It has a great potentiality to develop tourism sector by applying new policies and strategies. This research has identified the prospects of tourism industry in Bangladesh, identifies the SWOT analysis, constraints and suggests remedial measures of tourism sector. Keywords: Tourism, Bangladesh Parjatan Corporation, SWOT Analysis

    Current Practices of Green Marketing and Consumers’ Attitude towards Green Consumption: A Case Study of Some Selected Plastic-Bottled Soft Drinks Producing Firms

    Get PDF
    In today’s global economy, organizations are increasingly called upon to demonstrate sound management of economic, social and environmental issues. A focus on these issues results in advantages in financing, insurance, marketing, regulatory treatment, and other areas. Business today is not just about selling a product or service to a customer around the corner. In the rapid evolution to a global market-place, having a set of common rules is critical to facilitating trade. Increasingly in this single world market, an organization needs to be able to demonstrate sound business management that includes concern for the environment. This would obviously results in advantages in financing, insurance, marketing, regulatory, and other areas of operations. An Environmental Management System (EMS) provides a solid framework for meeting environmental challenges and realizing the benefits. EMS is a structured approach to addressing the environmental bottom line. Development and implementation of EMS requires careful concentration, otherwise it would be an overwhelming task. Major global firms and international industry associations have historically been leaders in the areas of corporate environmental performance and voluntary initiatives for global environmental management. On the other hand, Bangladeshi firms are seriously lagging behind. Multinational companies as well as larger associations must come forward to help their smaller counterparts in development and implementation of a successful EMS for the betterment of the business sector and the environment as a whole. Keywords: China insurance industry, Foreign fund, Challeng

    In Vitro Interaction Between Oral Hypoglycemic Drug And Herbal Sex Stimulants: Drug Interactions

    Get PDF
    Sexual dysfunction is a common, underappreciated complication of diabetes. Male sexual dysfunction among diabetic patients can include disorders of libido, ejaculatory problems, and erectile dysfunction (ED). All three forms of male dysfunction can cause significant bother for diabetic patients and can affect their quality of life. Diabetic patients take oral hypoglycemic drug to control their diabetic as well as take herbal sex stimulants to control to increase the libido. The combined use of herbs and drugs has increased the possibility of herb-drug interactions. The study was undertaken to explore the herb-drug interactions. To investigate the herbdrug interactions an in vitro dissolution study in different simulated pH medium were performed. In this study gliclazide containing tablet of 80mg as oral hypoglycemic drug and different herbal sex stimulants available in local market were used. The release mechanism was explored and explained with zero order, first order and Higuchi equations to identify drug interaction. Higher percentage release of gliclazide was found at simulated phosphate buffer of pH 7.4 compared to gastric medium of pH 1.2 and also in presence of herbal sex stimulants. Increased release pattern of gliclazide by concomitant administration of herbal sex stimulants gives slightly higher absorption, which gives the indication of herb-drug interactions

    Sustainable development Goals (SDGs): 1 and 5 –complementary towards fulfillment of Goals through BNF grant: an analysis among the Beneficiaries

    Get PDF
    Bangladesh NGO Foundation (BNF) has been launched by the Bangladesh Government in 2004 with the aim to support of the partner Non-Governmental Organizations (NGOs) in assigning in taking up socio- economic development activities and poverty alleviation as well as gender balances through small amount of BNF Grant.  The country has also been in front of enormous challenges  of  feeding  the  rapidly  increasing  population  or  even  to  support  their livelihood  in  a  sustainable  manner. Bangladesh NGO foundation already disbursed more than 115 Crore taka through partner organizations out of which 36% is male while 64% is female beneficiary. The study intends to see whether SDG 1 and 5 is helping to implement both the goals through BNF grant fund as a complementary manner. Time period of the study was 1st March 2017 to 31th July,2017 . This study aimed to find out whether sustainable development goal 1 and 5 of BNF partner organization due to BNF grant is indicating any significant role? Research question of the study is whether BNF’s partner organizations sustainable development goal 1 and 5 of BNF partner organization due to BNF grant? Self-administered questionnaires were used to collect the data for this study. NGOs are employed for women’s   enterprise since escalating women’s economic opportunities is fundamental to sustainable growth and building more equitable societies. In this study, 93.9% of the organizations give help to women entrepreneurs. Majority (69.6%) of the respondents were strongly agreed that BNF’s financing and capital formatting solve social problem. It has been seen that there was significant association between NGOs role for removing poverty and fulfilling towards SDG1 and 5 as working for complementary through funds for zero poverty and disparity removing among inequality of poor women group has been also occurring. Marketing strategy through arranging supply chain management and setting up Business incubator by the authority of BNF is desirable. However, restructuring of BNF is required as it lacks any vision, mission and marketing approach as well as supply chain management process .Further, at rural area govt. of the country should set up community banking for channelling micro saving to micro investment

    SUSTAINABLE DEVELOPMENT GOALS (SDGS): 1 AND 5 –COMPLEMENTARY TOWARDS FULFILLMENT OF GOALS THROUGH BNF GRANT: AN ANALYSIS AMONG THE BENEFICIARIES

    Get PDF
    The Government of the People's Republic of Bangladesh has established Bangladesh NGO Foundation (BNF) to support the NGOs, with a view to associate the Non-Governmental Organizations and assigned to take up socio- economic development activities and poverty alleviation. The country has also been facing massive challenges  of  feeding  the  rapidly  increasing  population  or  even  to  support  their livelihood  in  a  sustainable  manner. Bangladesh NGO foundation already disbursed more than 110 Crore taka through partner organizations out of which 36% is male while 64% is female beneficiary. The study intends to see whether SDG 1  and 5 is implementing through BNF or not. Time period of the study was 15 May 2016 to 30th June,2017 . This study aimed to find out whether sustainable development goal 1 and 5 of BNF partner organization due to BNF grant is indicating any significant role? Research question of the study is whether BNF’s partner organizations sustainable development goal 1 and 5 of BNF partner organization due to BNF grant? Self-administered questionnaires were used to collect the data for this study. NGOs are working for women’s entrepreneurship since expanding women’s economic opportunities is fundamental to sustainable growth and building more equitable societies. In this study, 93.9% of the organizations give help to women entrepreneurs. Majority (69.6%) of the respondents were strongly agreed that BNF’s financing and capital formatting solve social problem. It has been seen that there was significant association between NGOs role for removing poverty and fulfilling towards SDG1 and 5 as disparity of removing inequality of poor women group has been also occurring. However, restructuring of BNF is required as it lacks any vision, mission and marketing approach as well as supply chain management process

    Familial and socio-cultural barriers in maintaining tobacco-free homes in Bangladesh: a comparative cross-sectional study

    Get PDF
    Objectives: Children, pregnant women and the elderly at a global level are all being dangerously exposed to tobacco use in the household (HH). However, there is no understanding of the familial and socio-cultural factors that provide barriers to ensuring tobacco-free homes in Bangladesh either in urban or rural areas (U&RAs). This study therefore investigates those barriers to help enable a move towards tobacco free homes in Bangladesh. Design: Comparative cross-sectional study. Settings: Data were collected from both urban and rural settings in Bangladesh. Participants: A probability proportional sampling procedure was used to select 808 participants in U&RAs out of a total of 3,715 tobacco users. Results: The prevalence of tobacco use at home was 25.7% in urban areas and 47.6% in rural areas. In urban areas: marital status (AOR=3.23, 95%CI=1.37-6.61), education (AOR=2.14, 95%CI=1.15-3.99), the smoking habits of elderly family members (AOR=1.81, 95%CI=0.91-2.89), offering tobacco as a traditional form of leisure activity at home (AOR=1.85, 95%CI=.94-2.95), and lack of religious practices (AOR=2.39, 95%CI=1.27-4.54) were identified as significant socio-cultural predictors associated with tobacco use at home. In rural areas: age (AOR=5.11, 95%CI=2.03-12.83), extended family (AOR=3.08, 95%CI=1.28-7.38), lack of religious practices (AOR=4.23, 95%CI=2.32-7.72), using children to buy or carry tobacco (AOR=3.33, 95%CI=1.11-9.99), lack of family guidance (AOR=4.27, 95%CI=2.45-41 7.42), and offering tobacco as a traditional form of leisure activity at home (AOR=3.81, 95%CI=2.23-6.47) were identified as significant determinants for tobacco use at home. Conclusion: This study concludes that socio-cultural traditions and familial norms in Bangladesh provide significant barriers for enabling tobacco-free homes. The identification of these barriers can aid policy makers and programme planners in Bangladesh in devising appropriate measures to mitigate the deadly consequences of tobacco use in the home. The consequences also include the dangers involved in family members being exposed to second48 hand smoke

    Off-pump versus on-pump coronary artery bypass grafting in patient of impaired renal function

    Get PDF
    The purpose of this study was to compare the renal function in patients undergoing coronary artery bypass grafting in off-pump and on-pump having pre-operative impaired renal function. In the on-pump, the serum creatinine and urea levels were significantly increased on post-operative day 1, 3 and 7. On day 1, it was maximum, then gradually decreased but not reached to pre-operative level. In case of off-pump, serum creatinine and urea levels were significantly increased on post-operative day 1 and 3. On day 1, it was maximum. Then decreased and the serum creatinine reached below pre-operative level on day 7. In case of on-pump, the creatinine clearance rate was significantly decreased on post-operative day 1, 3 and 7. On day 1, it was minimum. Then gradually increased but not reached the pre-operative level. In case off-pump, the creatinine clearance rate was significantly decreased on day 1 and 3. On day 1, it was minimum, then gradually increased and reached above the pre-operative level. A significant low level creatinine clearance rate was observed in on-pump group. Renal function was better preserved in patients undergoing off-pump in comparison to on-pump coronary artery bypass grafting
    corecore