Md Quamrul Ahsan, Abdul Hasib Chowdhury, Shakeel Ahmed, Imamul Hassan Bhuyan et al.
Abnormal condition in a power system generally leads to a fall in system frequency, and it leads to system blackout in an extreme condition. This paper presents a technique to develop an auto load shedding and islanding scheme for a power system to prevent blackout and to stabilize the system under ...
Mohammad Rubaiat Islam, Jing Gao, N. Ahmed, Mohammad Masud Karim et al.
Indian summer monsoon (ISM) driven moisture from the Indian Ocean is important for moisture transport to the Asian Water Towers and causing floods and droughts in Bangladesh. Stable isotopic compositions of precipitation (δ18O and δD) are crucial tracers of ISM moisture transport processes. Here we ...
Rumy Afroza, Quamrul H. Mazumder, Chowdhury Sarwar Jahan, M Kazi et al.
Abstract Hydrochemistry in parts of the Lower Tista Floodplain in northwest Bangladesh is dominated by alkalies and weakly acid, having highest concentration of sodium cations and bicarbonate anions respectively. Groundwater is characterized by sodium-calcium and sodium-potassium cation and bicarbon...
Md Ayubur Rahman Khan, Md Quamrul Ahsan
In this paper, a two-phase induction motor is developed in the core of a single-phase induction motor to run with a two-phase supply. Modification is done by changing the auxiliary winding of the single-phase motor thus giving a constant 90 degree phase difference between main and auxiliary windings...
Md Shafiullah, Md Ismail Hossain, Md Quamrul Ahsan
Abnormalities to any power system create oscillations to electrical quantities such as frequency, power factor, voltage and current. Most of them lead to fall of system frequency and sometimes systems are faced unwanted blackout due to extreme abnormalities. Systems can be protected through planned ...
Md Shafiullah, Hamidur Rahman, Md Quamrul Ahsan
Formation of island may be inadvertent which is due to system fault or intentional for a purpose of system maintenance. Generally fall of frequency is lead by abnormal condition to a power system and sometimes blackout of an integrated system is occurred due to extreme abnormality. Though traditiona...
Zakaria Alam, Sanjida Akter, Md. Anwar Hossain Khan, Md Shamshul Alam et al.
The dataset focuses on evaluating the performance of 17 sweet potato varieties (G) released by the Bangladesh Agricultural Research Institute (BARI) in terms of storage root yield and stability across five locations (E) in Bangladesh-Gazipur, Bogura, Jamalpur, Jashore, and Chattogram. The result rev...
Md Shafiullah, Bandar Suliman Alsharif, Md Ismail Hossain, Md Quamrul Ahsan
Electrical quantities such as frequency, voltage, current are being fluctuated due to abnormalities in power system. Most of the abnormalities cause fluctuation in system frequency and sometimes extreme abnormalities lead to system blackout. To protect the system from complete blackout planned and p...
Md Shafiullah, Md Shafiul Alam, Md Ismail Hossain, Md Quamrul Ahsan
Abnormal conditions in a power system create fluctuations to electrical quantities such as voltage, frequency and current. Some of them may lead to fall of system frequency and sometimes extreme abnormality leads to system blackout. Planned and proper islanding may protect the system from complete b...
Mohammad Tawhidul Alam, Md Quamrul Ahsan
Simultaneous AC-DC power transmission technique can improve both loadability and stability of a power system with long transmission line. But, there is a tradeoff between loadability and stability i.e. increase in the improvement of loadability causes the decrease in the improvement of stability and...
Md. Quamrul Ahsan, Mia Al Nahian, Md Mahabub Rahman
The comprehension of animal communication by humans remains a significant scientific challenge. Nevertheless, with appropriate training, limited interaction with certain bird species is achievable. This study proposes a novel technique for decoding avian communication, integrating artificial intelli...
PAA Md. Quamrul Ahsan Talukder, Bijoy Kumar Mondal
The study aims to identify the factors that affect primary-level student results and the factors that affect secondary-level student results. For this study responses were collected randomly from 501 primary level students and 165 secondary level students by adminstraating two interview schedules. I...
Rutaba Alam, Bappy Basak, Amiya Ahsan, Amit Gupta et al.
Abstract Primary breast lymphoma (PBL) is an unusual clinical entity accounting for 0.4–0.5% of all breast neoplasms. The usual presentation includes a painless palpable mass similar to that of breast carcinoma. Diffuse large B-cell lymphoma (DLBCL) is the most common identifiable type of PBL based ...
Mohammad Tawhidul Alam, Md Quamrul Ahsan
Simultaneous AC-DC power transmission technique can improve both loadability and stability of a power system with long transmission line. But, there is a tradeoff between loadability and stability i.e. increase in the improvement of loadability causes the decrease in the improvement of stability and...
Md Quamrul Ahsan, Abdul Hasib Chowdhury, Samia Subrina, Md. Forkan Uddin et al.
To avoid a long radial transmission line and the difficulties of right of way, the bulk consumer prefers to get the electric supply directly from its nearest point of the grid through loop-in and loop-out (LILO) connection. This affects the reliability of a transmission corridor. A small percentage ...