Browsing by Author "ALAM, SHARIFUL"

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EFFECT OF INORGANIC ARSENATE ON GROWTH AND YIELD RESPONE OF BRINJAL (Solanum melongena L.) GROWN IN ARTIFICIALLY CONTAMINATED SOIL
(DEPARTMENT OF AGROFORESTRY AND ENVIRONMENTAL SCIENCE, 2022) ALAM, SHARIFUL
Arsenic (As), which is a highly toxic metalloid poses a serious risk to plants, animals and human health has become a major public concern in many countries including Bangladesh. A pot experiment was conducted with four different levels of arsenic at Agroforestry and Environmental Science field of Sher-e-Bangla Agricultural University, Dhaka. There were four different arsenic levels viz. T 1 : Control (No arsenic in the soil); T 2 : 25 mg As kg ii -1 soil; T 3 : 50 mg As kg : 75 mg As kg -1 soil. Different data on growth and yield attributes were collected and analyzed statistically. It was observed that T 1 (no arsenic) treatment exposed the best results in terms of plant height, stem diameter (cm), number of leaves, leaf length (cm), leaf breadth (cm), length and weight of shoot and root, number of flowers and fruits, fruit length, fruit diameter and fruit weight of brinjal plant compared to other treatments. The maximum fruits (3.75) were observed in treatment T 1 (no arsenic in the soil) at 80 DAT which was significantly different from the others. Hence, from this study, it might be concluded that cultivation of brinjal plant was sensitive to arsenic stress and yield loss occurred with higher concentrations of arsenic. The treatment T 1 (no arsenic in the soil) exhibited the best result on growth as well as yield response of brinjal plant followed by T 2, T 3 and T 4.
Small Scale Pv Integration In Bangladesh: Opportunities, Challenges, And Recommendation
(Department of Electrical and Electronic Engineering, 2022-07) ALAM, SHARIFUL; PRANTA, MUSHFIQUR RAHMAN
Small scale on site renewable energy generation is getting a common feature of modern energy system in developed countries both in business and residential sectors. Solar home system (SHS) is the most widely used form of such renewable energy source around the world. Residential users, small business, office, industries all are implementing on site PV generation to fulfill the clean energy policies, to increase the resilience of the system as well as better economic options. Since early 2000s Bangladesh govt has started to introduce nano and micro scale to the population who are at the remote corners of the country and where electric grid line wasn’t reached. In recent years, Bangladesh has made tremendous improvement in the electricity sector and the demand and generation now match each other. In this situation, those nano scale PV systems doesn’t make any economic sense. Moreover hand the existing PV market, policies are not good enough to attract mass population to install small scale PV system known as SHS in private initiative.We have tried to replicate the current SHS policies and pricing along with the obstacles. Our expectation was to see the economic viability of the current system. For this purpose, we have constructed yearly load profile of 3 consumers. Then we used these load profiles to evaluate the economic viability of the current system. After this we have applied different renewable friendly policies, incentives, net metering to find out the economic viability of the modified system. And for testing the economic viability we have chosen REopt tool. Then we have used three hypothetical scenarios to see the effectiveness of these policies and strategies to make SHS attractive to the mass people. We have used residential and small business load profile to simulate in REopt. The outcomes of this work suggests that net metering along with financial policies will make SHS attractive towards mass people.