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Results for “"Abu Kawsar"”

16+ results

Design and optimization of photonic crystal fiber for liquid sensing applications

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Md. Faizul Huq Arif, Kawsar Ahmed, Sayed Asaduzzaman, Md. Abul Kalam Azad

Journal: Photonic SensorsYear: 2016Citations: 155

Abstract This paper proposes a hexagonal photonic crystal fiber (H-PCF) structure with high relative sensitivity for liquid sensing; in which both core and cladding are microstructures. Numerical investigation is carried out by employing the full vectorial finite element method (FEM). The analysis h...

Physical SciencesEngineeringElectrical and Electronic EngineeringOpen Access
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Synthesis of nano-crystallite hydroxyapatites in different media and a comparative study for estimation of crystallite size using Scherrer method, Halder-Wagner method size-strain plot, and Williamson-Hall model

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Md. Abu Kawsar, Md. Sahadat Hossain, Newaz Mohammed Bahadur, Samina Ahmed

Journal: HeliyonYear: 2024Citations: 143

] is remarkably similar to the hard tissue of the human body and the uses of this material in various fields in addition to the medical sector are increasing day by day. In this research, mustered oil, soybean oil, as well as coconut oil were employed as liquid media for synthesizing nanocrystalline...

Physical SciencesEngineeringBiomedical EngineeringOpen Access
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Fourier transform infrared spectroscopic technique for analysis of inorganic materials: a review

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Kazi Al-Amin, Md. Abu Kawsar, Md Abdullah-Al Mamun, Md. Sahadat Hossain

Journal: Nanoscale AdvancesYear: 2025Citations: 77

FTIR is a very important analytical technique that is widely used for the detection and analysis of inorganic materials. It has a wide range of applications, from chemical composition analysis, structure identification, and phase identification to surface analysis of inorganic materials. Despite its...

Physical SciencesChemistryAnalytical ChemistryOpen Access
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Synthesis, Antimicrobial, Anticancer, PASS, Molecular Docking, Molecular Dynamic Simulations & Pharmacokinetic Predictions of Some Methyl β-D-Galactopyranoside Analogs

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Md. Ruhul Amin, Farhana Yasmin, Mohammed A. Hosen, Sujan Dey et al.

Journal: MoleculesYear: 2021Citations: 65

A series of methyl β-D-galactopyranoside (MGP, 1) analogs were selectively acylated with cinnamoyl chloride in anhydrous N,N-dimethylformamide/triethylamine to yield 6-O-substitution products, which was subsequently converted into 2,3,4-tri-O-acyl analogs with different acyl halides. Analysis of the...

Physical SciencesChemistryOrganic ChemistryOpen Access
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Combined influence of modified recycled concrete aggregate and metakaolin on high-strength concrete production: Experimental assessment and machine learning quantifications with advanced SHAP and PDP analyses

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Md. Habibur Rahman Sobuz, Md Mushfiqur Rahman, Rahat Aayaz, Wael S. Al-Rashed et al.

Journal: Construction and Building MaterialsYear: 2025Citations: 61
Physical SciencesEngineeringBuilding and Construction
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Synthesis, antimicrobial, molecular docking and molecular dynamics studies of lauroyl thymidine analogs against SARS-CoV-2: POM study and identification of the pharmacophore sites

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Mohammed A. Hosen, Nasrin Sultana Munia, Mohammed Al‐Ghorbani, Mohammed Baashen et al.

Journal: Bioorganic ChemistryYear: 2022Citations: 61

Nucleoside precursors and nucleoside analogs occupy an important place in the treatment of viral respiratory pathologies, especially during the current COVID-19 pandemic. From this perspective, the present study has been designed to explore and evaluate the synthesis and spectral characterisation of...

Physical SciencesChemistryOrganic ChemistryOpen Access
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Synthesis of nano-hydroxyapatite using emulsion, pyrolysis, combustion, and sonochemical methods and biogenic sources: a review

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Md. Kawcher Alam, Md. Sahadat Hossain, Md. Abu Kawsar, Newaz Mohammed Bahadur et al.

Journal: RSC AdvancesYear: 2024Citations: 54

Different synthesis methods (emulsion, pyrolysis, combustion, and sonochemical) of calcium phosphates and exploration of biogenic sources.

Physical SciencesEngineeringBiomedical EngineeringOpen Access
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Optimization of recycled rubber self-compacting concrete: Experimental findings and machine learning-based evaluation

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Md. Habibur Rahman Sobuz, Limon Paul Joy, Abu Sayed Mohammad Akid, Fahim Shahriyar Aditto et al.

Journal: HeliyonYear: 2024Citations: 53

This research aims to assess the rheological and mechanical characteristics of Self-compacting concrete (SCC) incorporating waste tire rubber aggregates (WRTA) as an interim substitute for coarse aggregates. However, the standard experimental modeling approach has significant obstacles when it comes...

Physical SciencesEngineeringCivil and Structural EngineeringOpen Access
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Status of disease prevalence, drugs and antibiotics usage in pond-based aquaculture at Narsingdi district, Bangladesh: A major public health concern and strategic appraisal for mitigation

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Md. Abu Kawsar, Md. Tariqul Alam, Debasish Pandit, Md Moshiur Rahman et al.

Journal: HeliyonYear: 2022Citations: 46

This research aimed to investigate the present status of disease prevalence and usage of aqua drugs for various aquaculture operations in the Narsingdi region of Bangladesh. Data were collected through the market survey, preset questionnaire interview, personal contact, and participatory rural appra...

Life SciencesImmunology and MicrobiologyImmunologyOpen Access
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Novel Methyl 4,6-O-Benzylidene--D-Glucopyranoside Derivatives: Synthesis, Structural Characterization and Evaluation of Antibacterial Activities

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M. Soriful Islam, Arifuzzaman ARİFUZZAMAN, Monjur Rahman, Mohammad A. Rahman et al.

Journal: Hacettepe Journal of Biology and ChemistryYear: 2019Citations: 39

Carbohydrates are the most abundant and the most diverse biopolymers in nature. Due to the importance of carbohydrates it is necessary to develop a new method for the synthesis of carbohydrate based drugs of the current global situation for health and disease. In this present work we demonstrate the...

Physical SciencesChemistryOrganic ChemistryOpen Access
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SGBBA: An Efficient Method for Prediction System in Machine Learning using Imbalance Dataset

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Saiful Islam, Umme Sara, Abu Kawsar, Anichur Rahman et al.

Journal: International Journal of Advanced Computer Science and ApplicationsYear: 2021Citations: 37

A real world big dataset with disproportionate classification is called imbalance dataset which badly impacts the predictive result of machine learning classification algorithms. Most of the datasets faces the class imbalance problem in machine learning. Most of the algorithms in machine learning wo...

Physical SciencesComputer ScienceArtificial IntelligenceOpen Access
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Health and nutritional status of children of adolescent mothers: experience from a diarrhoeal disease hospital in Bangladesh

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Kawsari Abdullah, Mohammad Abdul Malek, Abu Syed Golam Faruque, Mohammed Abdus Salam et al.

Journal: Acta PaediatricaYear: 2007Citations: 36

AIM: The study aimed at assessing clinical and nutritional features and socioeconomic characteristics of the first birth-order children (1-48 months) of adolescent mothers. METHODS: Five hundred and thirty-nine first birth-order children of both sexes, aged 1-48 month(s) were studied. All study chil...

Health SciencesNursingNutrition and Dietetics
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Microplastics pollution in the river Karnaphuli: a preliminary study on a tidal confluence river in the southeast coast of Bangladesh

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Kaniz Fatema, Turabur Rahman, Md Jakiul Islam, Kizar Ahmed Sumon et al.

Journal: Environmental Science and Pollution ResearchYear: 2022Citations: 34

Bangladesh is a deltaic country in Asia, and its riverine systems ultimately drain into the Bay of Bengal. Plastic is a severe environmental issue for coastal-marine ecosystems due to the indiscriminate usage and discarding of plastic items in the upstream river that eventually find their route into...

Physical SciencesEnvironmental SciencePollution
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Acylated glucopyranosides: FTIR, NMR, FMO, MEP, molecular docking, dynamics simulation, ADMET and antimicrobial activity against bacterial and fungal pathogens

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Nasrin Akter, Supriyo Saha, Md. Ahad Hossain, Kabir M. Uddin et al.

Journal: Chemical Physics ImpactYear: 2024Citations: 31

Carbohydrates, among the most abundant and widespread biomolecules in nature, play indispensable roles in diverse biological functions and represent a treasure trove of untapped potential for pharmaceutical applications. From this perspective, the present study was designed to explore and evaluate t...

Physical SciencesChemistryOrganic ChemistryOpen Access
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Synthesis of pure and doped nano-calcium phosphates using different conventional methods for biomedical applications: a review

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Md. Abu Kawsar, Md. Sahadat Hossain, Md. Kawcher Alam, Newaz Mohammed Bahadur et al.

Journal: Journal of Materials Chemistry BYear: 2024Citations: 28

solid-state, mechano-chemical, wet-chemical precipitation, hydrolysis, sol-gel, and hydrothermal methods) coupled with the variation in source materials and their influence in modifying the structural morphology from a bulky state to nanoscale to explore the applications of multifunctional calcium p...

Physical SciencesEngineeringBiomedical Engineering
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