Rumman Rashid Chowdhury, Mohammad Shahadat Hossain, Raihan Ul Islam, Karl Andersson et al.
This paper proposes a process of Handwritten Character Recognition to recognize and convert images of individual Bangla handwritten characters into electronically editable format, which will create opportunities for further research and can also have various practical applications. The dataset used ...
Rummanur Rahad, Abu S. M. Mohsin, Mohammed Belal Hossain Bhuian, Md. Mosaddequr Rahman
The advent of graphene has opened new avenues for the design of high-performance metamaterial devices, particularly in the realm of electromagnetic absorption applications. This paper introduces a novel design for a broadband tunable graphene metamaterial absorber (GMMA) utilizing graphene. Through ...
Rumman Hossain, A.K. Azad, Md. Jahid Hasan, M. M. Rahman
Oil-based nanofluids are used to strengthen the stability of nanofluids as well as their thermophysical properties when they are exposed to high temperatures. The time-dependent thermophysical characteristics of multiwalet carbon nanotubes for kerosine oil-based nanofluid are numerically explored in...
Rumman Hossain, Md. Abul Kalam Azad, Md. Jahid Hasan, M.M. Rahman
This work conducts a numerical analysis of thermal radiation with a semicircular heater on the middle part of the bottom wall and a sliding lid on the top in a square enclosure. Magnetohydrodynamic (MHD) unsteady mixed convection for kerosene oil-based CNT nanofluid is studied. The finite element-ba...
Zahurul Islam, A.K. Azad, Md. Jahid Hasan, Rumman Hossain et al.
This research examines the natural convection phenomena in a triangular enclosure, assumed as a mechanical chamber. Water-based CNT-nanofluid was used as the fluid. The nature of the flow is unsteady, and a sinusoidal heat source is situated at the bottom of the triangle. The inclined two walls of t...
Rumman Hossain, Md. Jahid Hasan, A.K. Azad, R. Saidur
An enclosure with a moving lid is commonly used in heat and mass transmission. Also, many investigations have been done so far on a mixed convective flow in a cavity, but no research has been done to observe the low Reynolds number effect in the presence of MHD and radiation in a cavity with a semi-...
Rumman Rashid Chowdhury, Mohammad Shahadat Hossain, Sazzad Hossain, Karl Andersson
This paper proposes a process of sentiment analysis of movie reviews written in Bangla language. This process can automate the analysis of audience's reaction towards a specific movie or TV show. With more and more people expressing their opinions openly in the social networking sites, analyzing the...
KM Saif‐Ur‐Rahman, Razib Mamun, Iffat Nowrin, Shahed Hossain et al.
INTRODUCTION: Governance is one of the most important aspects for strong primary healthcare (PHC) service delivery. To achieve the targets for the Sustainable Development Goals, good governance may play a prime role in low-income and middle-income countries (LMICs). This evidence gap map (EGM) explo...
Md. Jahid Hasan, Md. Abul Kalam Azad, Rumman Hossain, M. M. Rahman et al.
The main objective of the study is to investigate the fluid flow pattern and thermal behavior of time-dependent 2-dimensional lid-driven cavity flow in the presence of mixed convection. The square-shaped lid-driven chamber was filled with a nanofluid consisting of carbon nanotubes (CNT) dispersed in...
S.M. Amir-Al Zumahi, Nourin Arobi, Hatem Taha, Md. Kamal Hossain et al.
In this paper, we reported the extraction process of five different flowering plants utilizing different dye extraction methods and solvents (ethanol and water) to choose the best dye removal process. The FTIR spectra revealed the presence of several clear functional groups for all five natural dyes...
Md. Jahid Hasan, A.K. Azad, Zahurul Islam, Rumman Hossain et al.
Nanoparticle is highly used in enhancing thermal performance, especially in lid-driven cavity flow in powder-related applications. Many researchers considered different conditions, such as MHD, radiation, and mixed convection incorporating nano liquid in such flow. However, no study was carried out ...
Sujoy Mondal, Abu S. M. Mohsin, Mohammed Belal Hossain Bhuian, Md. Mosaddequr Rahman et al.
Abstract On-chip localized surface plasmon resonance (LSPR) biosensor on chip (BoC) is a type of label-free biosensor that utilizes the plasmonic resonances of metal nanostructures to detect changes in the refractive index of the local environment. This results in changes in the intensity and wavele...
A.K. Azad, Abyaz Abid, C.N. Mithun, Md. Jahid Hasan et al.
The goal of the paper is to evaluate the characteristics of the fluid flow, heat, and contaminant transfer in an indoor air environment. A two-dimensional ventilated space having a discrete heat and contaminant source at their mutually perpendicular position is constructed to conduct a numerical stu...
A.K. Azad, Nafis Md M. Islam, C.N. Mithun, Tasnia Islam Rifa et al.
This numerical study was conducted to investigate the ventilation and airflow in a confined enclosure undergoing rapid inclusion of heat and contaminants representing air quality changes in working environments. A flow of air is passing inside a square enclosure with a heat source and a pollutant so...
Fahim Ahmad, Shyamal Kumar Paul, Meiji Soe Aung, Rummana Mazid et al.
Dengue virus (DENV) that caused an outbreak in Dhaka, Bangladesh during 2018 was analysed phylogenetically. DENV samples were classified into type 2-Cosmopolitan genotype (54%) and type 3-genotype I (46%), indicating co-circulation of two DENV types and resurgence of type 3 associated with genotype ...