Mohammad Asadullah, Md. Abdur Rahman, M. Makhdoom Ali, M. Shafiqur Rahman et al.
Md. Abdul Motin, M. A. Hafiz Mia, A. K. M Nasimul Islam
The thermodynamic activation parameters such as, free energy (ΔG#), enthalpy (ΔH#) and entropy (ΔS#) change for the viscous flow of the ternary systems of Methanol, Ethanol, n-Propanol and iso-Propanol in 0.005 and 0.01 M aqueous Sodium Dodecyl Sulfate (SDS) were determined by using viscosity at 298...
Mohammod Abdul Motin, Md. Imran Hasan, Shariful Islam
The aim of this paper is to design the effective shape of a microstrip patch antenna which can provide lower return losses, better gain and performance for X-band (2 GHz to12 GHz), Ku-band (12 GHz to 18 GHz) and K-band (18 GHz to 26 GHz) applications. Attempts have been made to optimize the antenna ...
M. Humaun Kabir, M. Z. Hossain, Md. Abdul Jalil, Swarup Ghosh et al.
Md. Shamim Anower, Mohammod Abdul Motin, Abu Sadat Md. Sayem, S. A. H. Chowdhury
The number of nodes in a deployed wireless sensor network might vary due to ad hoc nature, natural disaster. Counting the number is very important in useful data collection, network maintenance, node localisation. Although protocols are being used to count the number in terrestrial networks, harsh e...
M. Hasnat Kabir, Md. Abdul Motin, M. Entazul Huque
Densities, ρ of the systems Methanol, Ethanol and n-Propanol in water and in 0.05 and 0.1% Surf Excel (SE) solutions in water were measured at temperatures from 303.15 to 323.15 K covering the whole composition range. Excess molar volumes, for the systems were found to be negative and large in magni...
Md. Abdur Rahman, Mohammad Asadullah, M. M. Haque, Mohammod Abdul Motin et al.
Charcoal was prepared from coconut shell and activated at three temperatures 300, 350 and 400°C in constant flow of air or nitrogen. Adsorption of oxalic acid and maleic acid from their aqueous solution on charcoal was studied. Oxalic acid gave Langmuir type of adsorption isotherm indicating monolay...
Md. Abdul Motin, M. Hasnat Kabir, M. Entazul Huque
Viscosities, η of the systems methanol, ethanol and n-propanol in water, and in 0.05% and 0.1% Surf Excel (SE) solutions were measured at temperatures 303.15, 308.15, 313.15, 318.15 and 323.15 K, respectively, covering the whole composition range. On addition of alcohols to water or water + SE syste...
Mohammod Abdul Motin, Md Alim Uddin, Palash Kumar Dhar, M. A. Hafiz Mia et al.
The electrochemical behavior of catechol in the presence of sulfanilic acid has been examined in aqueous solution with numerous pH values, different electrodes and different concentration of sulfanilic acid, using cyclic voltammetry, controlled potential coulometry and differential pulse voltammetry...
Md. Mamun Hossain, Md Abdul Wahed, Mohammod Abdul Motin
A low profile, dual frequency probe-fed Microstrip antenna with E-shape radiating patch is designed and proposed for S-band and C-band applications. The purpose of this work is to obtain a dual frequency antenna with high gain and less return loss at the intended frequencies. The operating frequenci...
Mohammod Abdul Motin, Md. Imran Hasan, Md. Samiul Habib, M.R.I. Sheikh
This paper presents the design of a modified rectangular microstrip patch antenna for quad band applications specially for C-band, X-band, Ku-band and Kband applications. The antenna is simulated using the commercially available software General Electromagnetic Solver (GEMS) simulator and MATLAB. Qu...
Md. Samiul Habib, Mohammod Abdul Motin, Md Imrul Hasan, Md. Selim Habib et al.
In this paper, we propose and demonstrate a simple photonic crystal fiber (PCF) based on decagonal cladding structure for simultaneous control of dispersion and leakage properties restoring the design simplicity. Simulation results show that decagonal photonic crystal fibers with five rings can assu...
M.R.I. Sheikh, Mohammod Abdul Motin, Md. Amzad Hossain, Maytham A. Shahed
Due to random variations of wind speed, the output power and terminal voltage of a fixed-speed wind generator fluctuates continuously. In this paper, it is reported that the SMES system with a voltage-source IGBT converter and a DC chopper can smooth the line power and can also maintain the terminal...
Mohammod Abdul Motin, Md. Imran Hasan, Md. Asaduzzaman
The main motto of this paper is to design the effective shape of a microstrip patch antenna which can provide lower return losses, better gain and performance for K-band (18 GHz to 26 GHz), Ku-band (12 GHz to 18 GHz) and X-band (2 GHz to 12 GHz) applications. Attempts have been made to optimize the ...
M.R.I. Sheikh, F. Eva, Mohammod Abdul Motin, Md. Amzad Hossain
Due to random variations of wind speed, the output power and terminal voltage of a fixed speed wind generator fluctuates continuously. These irregularities in power output affect the power quality and thus an energy storage system is needed. In this work, the STATCOM/SMES system with a voltage-sourc...
Md. Imran Hasan, Mohammod Abdul Motin, Md. Samiul Habib
This paper presents a simple but novel circular ring slotting technique into rectangular microstrip antenna of making a compact patch which works in four frequency band. This compact microstrip antenna realized by changing the geometric shape, obtained by inserting small circular slots. The simulati...
Mohammod Abdul Motin, Md. Forhad Zaman, M.R.I. Sheikh
Demand for energy is increasing day by day because of increasing the population and industrialization but we have very limited resources. In this critical stage of energy crisis, renewable energy is one of the most important alternative energy sources. Wind and solar power are the cheapest energy so...
Md. Abdur Rahman, MAK Azad, Shamim Ahsan, Saiful Islam et al.
Silica-Alumina catalysts having three different Si/Al ratios were prepared. Surface acidity of these catalyst samples was measured by the base exchange method using aqueous ammonium acetate, CH 3 COONH 4 solution and the results were compared with those measured by the base exchange method using KOH...
Md Mayenul Islam, Mohammod Abdul Motin
Atrial fibrillation (AF) is a prevalent cardiac rhythm disorder with substantial health consequences that remains concealed in the initial stages due to a lack of symptoms and gradually advances to the chronic phase, emphasizing the urgent need for automated detection models. This paper introduces a...
Md Washim Akram, S. M. Abdul Motin, Mohammad Amanul Hoque, Nirendra Nath Mustafi
In the coastal area of Bangladesh, there is a scarcity of pure drinking water due to the presence of salt in water. For purifying the water, desalination process is the most common process. This project aims at studying and having a practical application of desalination process of salty water using ...