Cost Optimization Modeling of Renewable Energy Sources in Smart Grid Using SCADA

In recent times, renewable energy production from renewable energy sources is an alternative way to fulfill the increased energy demands. However, the increasing energy demand rate places more pressure, leading to the termination of conventional energy resources. On the other hand, the depletion of fossil fuels like coal, petroleum, natural gas, etc., is creating an adverse effect on the environment. However, the cost of power generation from coal-fired plants is higher than the power generation\u27s price from renewable energy sources. Therefore, it has become a stumbling block balancing this increased energy demand using existing resources and new renewable resources that optimize the total power generation and the cost of power generation. However, power generation from the combined renewable energy sources confronts few complications, such as unstable power generated from the wind generator, the higher operational cost of the hydropower plant, etc. This experiment is focused on cost optimization during power generation through the pumped storage power plant and wind power plant. The entire modeling of cost optimization has been conducted in two parts. The mathematical modeling was done using MATLAB simulation while the hydro and wind power plant\u27s emulation was performed using SCADA designer implementation. The experiment was conducted using ranges of generated power from both power sources. The optimum combination of output power and cost from both generators is determined via MATLAB simulation within the assumed generated output power range. Secondly, the hydro-generator and wind generator\u27s emulation were executed individually through synchronizing the grid to determine each generator\u27s specification using SCADA designer, which provided the optimum power generation from both generators with the specific speed, aligning with results generated through MATLAB. Finally, the operational power cost (with no losses consideration) from MATLAB was compared with the local energy provider to determine the cost-efficiency. This experiment has provided the operational cost optimization of the hydro-wind combined power system with stable wind power generation using SCADA, which will ultimately assist in operations of large-scale power systems, remotely minimizing multi-area dynamic issues while maximizing the system efficiency

Retail banking, credit facility & performance appraisal of the employee of The City Bank Limited

This internship report is submitted in a partial fulfillment of the requirements for the degree of Bachelor of Business Administration, 2015.Cataloged from PDF version of Internship report.Includes bibliographical references (page 90).The main focus point of the report was to understand the general banking activities of the city bank limited. By the study on the city bank limited, I try to achieve the objective of the study is to match up theoretical knowledge with practical experiences and try to show current general banking activities and employees performance appraisal by the city bank limited. The city bank limited is one of the first generation private commercial bank operating in Bangladesh. It is a top bank among the oldest five Commercial Banks in the country which started their operations in March 27, 1983. The functions of the bank cover a wide range of banking and functional activities to individuals, firms and corporate body’s etc. banks loan are greatly emphasized and it can be called the heart of the bank because it is the main source of the income of the bank. It is very important for the national economy as a whole because the expansion and condition of the bank loan affect the level of business activities to the different sectors to diversify its credit portfolio in compliance with credit policies of traders, manufacturing processing plants and export industries and other business. General Banking section is what keeps the overall banking going. All sorts of day-to-day transactions are performed in here as it plays a vital role in banking. The general banking department that consists mainly of the following and they are given below: Account opening section/ Department, Bills & Clearing, Remittance, Cash section/ Department. City Bank wants to become the most popular bank to all individual clientele of the country, at least of the cities and towns everywhere to operate. They want to provide their customers the best-in-class services, innovative products and financial solutions. City Bank practices internal marketing activities to motivate their employees so that they can ensure best service to their customers. At last, the service provided by the young energetic officers of the city banks ltd is very satisfactory. The City Bank Limited follows all the rules and regulation of Bangladesh Bank.Nafisa IslamB. Business Administratio

Social Determinants and Prevalence of Antenatal Depression among Women in Rural Bangladesh: A Cross-Sectional Study

The prevalence of antenatal depression in Bangladesh ranges from 18 to 33%. Antenatal depression has negative impacts on the mother and child such as suicidal ideations, low birth weight, and impaired fetal development. This cross-sectional study aims to determine the prevalence and social determinants of antenatal depression in rural Sylhet, Bangladesh. Data were collected from 235 pregnant women between March and November 2021. The validated Bangla Edinburgh Postnatal Depression Scale was used to measure antenatal depressive symptoms (ADS). Background information was collected using a structured questionnaire including the Duke Social Support and Stress Scale, pregnancy choices, and WHO Intimate Partner Violence questions. Point-prevalence of antenatal depression was 56%. Intimate partner violence (IPV) before pregnancy (adjusted odds ratio (AOR) 10.4 [95% confidence interval (CI) 2.7–39.7]) and perceived husband’s male gender preference (AOR 9.9 [95% CI 1.6–59.6]) were significantly associated with increased odds of ADS among pregnant women. Increased family support was a significant protective factor for ADS (AOR 0.94 [95% CI 0.91–0.97]). Antenatal depression commonly occurs in rural Sylhet, Bangladesh, highlighting the need for improved screening and management within these settings. The findings suggest the need for community-based interventions for women with low family support and experiencing intimate partner violence, and educational programs and gender policies to tackle gender inequalities

Bacterial Community Profiling of Tropical Freshwaters in Bangladesh

Seasonal and spatial variations in the bacterial communities of two tropical freshwater sources in Bangladesh, Lake Dhanmondi in central Dhaka, and a pond in the outskirts of Dhaka, were assessed and compared using PCR-DGGE and deep sequencing of 16S rRNA genes, as well as heterotrophic enrichments using water samples collected at nine different time points during 1 year. Temporal and spatial variations of common aquatic bacterial genera were observed, but no clear seasonal variations could be depicted. The major bacterial genera identified from these two sites were members of the Proteobacteria, Cyanobacteria, Actinobacteria, Bacteroidetes, Chlorobi, Chloroflexi, Verrucomicrobia, and Firmicutes. Among the proteobacterial groups, members of the α-, β-, and γ- Proteobacteria predominated. γ- Proteobacteria belonging to the Escherichia coli/Shigella group even the diarrheagenic pathotypes of E. coli e.g., EPEC and ETEC were detected in most samples throughout the year, with no apparent correlations with other microbial groups. The other pathotypes, EHEC, EAEC, and EIEC/Shigella spp. were also detected occasionally. This study represents the first thorough analysis of the microbial diversity of tropical freshwater systems in Bangladesh.publishedVersio

Bacterial Community Profiling of Tropical Freshwaters in Bangladesh

Seasonal and spatial variations in the bacterial communities of two tropical freshwater sources in Bangladesh, Lake Dhanmondi in central Dhaka, and a pond in the outskirts of Dhaka, were assessed and compared using PCR-DGGE and deep sequencing of 16S rRNA genes, as well as heterotrophic enrichments using water samples collected at nine different time points during 1 year. Temporal and spatial variations of common aquatic bacterial genera were observed, but no clear seasonal variations could be depicted. The major bacterial genera identified from these two sites were members of the Proteobacteria, Cyanobacteria, Actinobacteria, Bacteroidetes, Chlorobi, Chloroflexi, Verrucomicrobia, and Firmicutes. Among the proteobacterial groups, members of the α-, β-, and γ- Proteobacteria predominated. γ- Proteobacteria belonging to the Escherichia coli/Shigella group even the diarrheagenic pathotypes of E. coli e.g., EPEC and ETEC were detected in most samples throughout the year, with no apparent correlations with other microbial groups. The other pathotypes, EHEC, EAEC, and EIEC/Shigella spp. were also detected occasionally. This study represents the first thorough analysis of the microbial diversity of tropical freshwater systems in Bangladesh

Origin and Accumulation Mechanism of Gas Condensate in Kailashtila Gas Field, Sylhet Basin, Bangladesh

The Kailashtila gas field (KGF) is situated in the northeastern part of Sylhet basin, Bangladesh. This paperpresents chemical characteristics of extractable natural gas in drilled well KTL-2, in order to examine their potentialsource and maturity of organic matter, and hydrocarbon accumulation mechanism in the basin. The gas condensate inthe KTL-2 composed primarily of methane (85.81 wt.%), ethane (6.68 wt.%), propane (2.13 wt.%), and traces of higherhydrocarbons (i-butane, 0.69 wt.%; n-butane, 0.73 wt.%; i-pentane, 0.50 wt.%; n-pentane, 0.44 wt.%; hexane, 1.27wt.%; heptane, 0.99 wt.%; octane, 0.24 wt.%). Nitrogen and CO2 contents in the gas condensate are low (0.46 wt.%and 0.05 wt.%, respectively). Average dry coefficient (C1/C1–5) value in the gas condensate is 0.93 (0.91–0.95), whichreflects relatively mature hydrocarbon migrating from nearby deeply buried source rocks. The δ13C1 (–39 to –40‰) andC1/C(2+3) (19.77) variation diagram show that gas condensate in the KGF is mainly controlled by type III kerogen, andthe organic matter was thermally mature in nature. However, the relationships between stable isotope value of methane(δ13C1), ethane (δ13C2) and propane (δ13C3) indicate mainly thermogenic origin of the studied gas condensate, andminor input from mixed thermogenic and bacteriogenic processes

Gorlin Goltz Syndrome- A Rare Disease Reported In Bangladesh

Gorlin-Goltz syndrome is an infrequent multisystemic disease with an autosomal dominant trait with complete penetrance and various expressivity. Gorlin Goltz Syndrome is a rare autosomal characterized by an increased predisposition to basal cell carcinoma and associated with multiorgan anomalies having a high level of penetrance. We report here a 60-year-old patient with positive findings of Gorlin-Goltz Syndrome.The following report emphasizes the identification of all the essential clinical diagnostic criteria ,radiological manifestations, and possible genetic tests to be performed for setting up an adequate treatment plan

Properties Of Concrete By Using Bagasse Ash And Recycle Aggregate

Sustainable concrete structures which imply green building technology has been widely considering in modern structures. The objective of this study is to investigate the concrete properties by using recycle aggregate as a replacement of coarse aggregate and bagasse ash as the partial replacement of cement. Experimental investigation has been carried out by performing several tests which included slump test, compacting factor test, compressive strength test, rebound hammer test and concrete density test. A total of nine mix batches of concrete containing 0%, 25%, 50%, 75% and 100% of recycle aggregate and 0%, 10%, 15% and 20% of bagasse ash were tested to determine the increment of mechanical properties of concrete. It can be observed that significant decrease of concrete strength with the addition of recycle aggregate, and effective increment of concrete strength by using optimum percentage of bagasse ash might be possible. Finally, it can be concluded that recycle aggregate and bagasse ash with optimum percentage can be used to make recycle concrete and sustainable structures