Browsing by Author "UDDIN, BORHAN"

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    EFFECT OF DIFFERENT LEVELS OF NITROGEN AND PHOSPHORUS ON THE GROWTH AND YIELD OF GARDEN PEA (Pisum sativum L.)
    (DEPARTMENT OF SOIL SCIENCE, 2009) UDDIN, BORHAN
    A field experiment was conducted at the research farm of Sher-e-Bangla Agricultural University, Dhaka during December 2007 to February 2008 to study the effects of different levels of nitrogen and phosphorus on the growth and yield of garden pea. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications of each treatment. The unit plot size was 2.4 m2 ( 1.6 m x 1.5 m). There were 12 treaunent combinations in the experiment comprising 4 levels of N (0. 30, 60 and 90 kg/ha designated as N0• N3o. N60 and N90. respectively) and 3 levels of P (0, 50 and 75 kg P205/ha designated as P0, P50 & P15, respectively). The individual and combined effects of nitrogen (N) and phosphorus (P) on growth and yield of garden pea were studied. The individual and interaction effects of N and P on growth and yield was found significant. Nitrogen@ 90 kg/ha gave the highest plant height, root length, highest number of branches per plant. highest pod length. highest number of seed per pods, 1000-seed weight, highest green pod yield and seed yield per hectare. The highest plant height, highest root length, highest green pod yield was recorded in 75 kg P205/ha. Phosphorus @ 50 kg/ha gave the highest number of branches per plant. highest length of pods and seed yield per hectare. The treatment combination of NooPso produced the maximum plant height. root length. highest green pod yield and highest seed yield per hectare but the treatment combination of N90 P75 gave the maximum plant height at vegetative stage. highest number of pods per plant, highest length of pod and maximum N, P, K and S content in plants. Lowest N, P, Kand S contents were found in control (N0P0) treatment. From the present findings it can be concluded that combined application of N @ 90 kg/ha and P @ 50 kg/ha is the most suitable combination to achieve the maximum return from garden pea plants.
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    EFFECT OF DIFFERENT LEVELS OF NITROGEN AND PHOSPHORUS ON THE GROWTH AND YIELD OF GARDEN PEA
    (DEPT. OF SOIL SCIENCE, 2009) UDDIN, BORHAN
    A field experiment was conducted at the research farm of Sher-e-Bangla Agricultural University, Dhaka during December 2007 to February 2008 to study the effects of different levels of nitrogen and phosphorus on the growth and yield of garden pea. The experiment was laid out in a Randomized Complete Block Design (ReBD) with three replications of each treatment. The unit plot size was 2.4 m2 (1.6 m x 1.5 m). There were 12 treatment combinations in the experiment comprising 4 levels of N (0. 30. 60 and 90 kglha designated as No. N30, N60 and N9Qt respectively) and 3 levels of P (0, 50 and 75 kg P20.slha designated as Po- Pso & P75' respectively). The individual and combined effects of nitrogen (N) and phosphorus (P) on growth and yield of garden pea were studied. The individual and interaction effects of N and P on growth and yield was found significant. Nitrogen @ 90 kg/ha gave the highest plant height, root length, highest number of branches per plant. highest pod length. highest number of seed per pods 1000-seecJ weight, highest green pod yield and seed yield per hectare. The highest plant height. highest root length, highest green pod yield was recorded in 75 kg P20siha. Phosphorus @ 50 kg/ha gave the highest number of branches per plant, highest length of pods and seed yield per hectare. The treatment combination ofNQ01'soproduced the maximum plant height. root length. highest green pod yield and highest seed yield per hectare but the treatment combination of N90 P75 gave the maximum plant height at vegetative stage. highest number of pods per plant, highest length of pod and maximum N. P, K and S content in plants. Lowest N. P, K and S contents were found in control (NoPo) treatment. From the present findings it can be concluded that combined application of N @ 90 kglha and P @ 50 kg/ha is the most suitable combination to achieve the maximum return from garden pea plants.
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    Modeling, Simulation, And Techno-Economic Analysis Of A Virtual Power Plant: A Case Study In The Perspective Of Bangladesh
    (Department of Computer Science and Engineering, 2021-05) ARJU, KHALED; UDDIN, BORHAN
    Bangladesh is a developing country and it’s population density is about 1265 per square kilometer. In comparison to all other energy sources, fossil fuels account for the majority of electricity production in Bangladesh. Due to the lacking of smart distribution of energy, the country unable to meets with proper demand of electricity. So this paper has been taken virtual power plant (VPP) to develop smart energy distribution system in the country. The concept of a virtual power plant (VPP) has arisen in order to control distributed generation and improve its exposure in power markets, also it can qualify the sharing of those renewable energy resources to electricity market. A series of distributed generators (DGs), Energy Storage Systems (ESSs), and regulated loads that are compiled and then operated by an energy management system (EMS) called a virtual power plant (VPP). Just like any other developing countries, Bangladesh is also facing a major power crisis. We have to think economically because of our limited resources. We know that virtual power plant is playing an important role in American & European electricity markets .By using information and communication technology(ICT), distributed generation units, active users, and energy storage can be linked and aggregated into an intelligent plant network. This makes fresh trading opportunities as well as prospects for frequency management in the energy industry, stability of the power supply grid and voltage. Moreover, through the market-oriented integration of clean energy and efficient technology through VPP, greenhouse gas emissions can be reduced effectively. This thesis represents the conception & types of virtual power plant (VPP). The simulation of this model for IIUC describes that the developed system in this thesis is capable of sharing power to the grid. The VPP model & simulation of the curves displayed by using MATLAB- SIMULINK. This thesis mentions three DG control unit which is controlled by auto control system (ACS). Also the total harmonic distortion analysis on various signal of VPP has been figured out in this paper. Finally, this thesis has been tried to set up a discussion about the techno-economic analysis of the proposed VPP that has been designed in the perspectives of IIUC. The per kWh cost reduction by this system is about 45.32 million Taka annually which is 53% of total cost. So this will make a great contribution to the power sector of Bangladesh