A5050117587- Hydrogels: synthesis, properties, applications
- Electrospun Nanofibers in Biomedical Applications
- Inhalation and Respiratory Drug Delivery
- biodegradable polymer synthesis and properties
- Polymer Surface Interaction Studies
- Microfluidic and Bio-sensing Technologies
- COVID-19 Clinical Research Studies
- Analytical Chemistry and Chromatography
- Advanced Cellulose Research Studies
- Osteoarthritis Treatment and Mechanisms
- SARS-CoV-2 and COVID-19 Research
- Hydraulic flow and structures
- Surfactants and Colloidal Systems
- Advancements in Transdermal Drug Delivery
- Polymer Nanocomposite Synthesis and Irradiation
- Water resources management and optimization
- Immunotherapy and Immune Responses
- Electrochemical sensors and biosensors
- Microbial Fuel Cells and Bioremediation
- Iron Metabolism and Disorders
- Microfluidic and Capillary Electrophoresis Applications
- Protein Interaction Studies and Fluorescence Analysis
- Lignin and Wood Chemistry
- Wastewater Treatment and Reuse
- Electrowetting and Microfluidic Technologies
University of British Columbia
2024
University of Calgary
2020-2022
University of Tsukuba
2019-2020
Shahjalal University of Science and Technology
2016-2017
Mawlana Bhashani Science and Technology University
2015
Hydrogels, being hydrophilic polymer networks capable of absorbing and retaining aqueous fluids, hold significant promise in biomedical applications owing to their high water content, permeability, structural similarity the extracellular matrix. Recent chemical advancements have bolstered versatility, facilitating integration molecules guiding cellular activities enabling controlled activation under time constraints. However, conventional synthetic hydrogels suffer from inherent weaknesses...
Antithrombotic surfaces that prevent coagulation activation without interfering with haemostasis are required for blood-contacting devices. Such materials would restrain device-induced thrombogenesis and decrease the need anticoagulant use, thereby reducing unwanted bleeding. Here, by optimizing interactions factor XII rather than preventing its surface adsorption, we develop a substrate-independent antithrombotic polymeric coating sheltered positive charges. The antithrombic properties of...
Thermoresponsive poly(N-isopropylacrylamide) (PNIPAm) microgels were synthesized via free radical polymerization using four synthesis-solvents with varying polarity index: dioxane, tetrahydrofuran (THF), toluene, and cyclohexane. Characterization by FTIR, NMR, XRD confirmed the chemical structure of PNIPAm microgels. Microgels in polar solvents have a lower degree porosity display swelling values (around 275% 314% for THF respectively). In contrast, nonpolar toluene cyclohexane higher (about...
The recent coronavirus disease-2019 (COVID-19) outbreak has increased at an alarming rate, representing a substantial cause of mortality worldwide. Respiratory injuries are major COVID-19 related complications, leading to poor lung circulation, tissue scarring, and airway obstruction. Despite in-depth investigation respiratory injury's molecular pathogenesis, effective treatments have yet be developed. Moreover, early detection viral infection is required halt the disease-related long-term...
Abstract In this study, we treated microcrystalline cellulose (MCC) with the ionic liquid (IL) 1-butyl-3-methylimmidazolium chloride (BMIMCl) to elucidate effects that IL treatment conditions have on properties of amorphized (AC). Analysis X-ray diffractograms confirmed after 20 min AC crystallinity was reduced from 77.7 57.1%. After 10 h treatment, decreased 29.6%. Chemical and morphological changes in regenerated were determined via FT-IR SEM studies. The rapid transformation crystalline...
• A novel sustainable route was developed using bio-based 2-MeTHF for PNIPAm microgel synthesis with desirable properties. The monomer conversion and rate of polymerization in nearly equivalent to that conventional solvents like THF. has a much lower carbon footprint (97% reduction emissions) than solvents. poly(N-isopropylacrylamide) (PNIPAm) the solvent 2-Methyltetrahydrofuran (2-MeTHF) is described. Functional chemical characterization microgels synthesized indicates they are organic...
The outbreak of new coronavirus disease-20119 or COVID-19 infection has become a global health emergency at the beginning this year. Currently, no specific vaccines and therapeutic medications are available to treat disease. Even though several vaccine candidates under investigation, it will take some time make them for mass population. Hyperinflammation due excessive cytokine release in infected patients with other inflammatory diseases makes lethal effects, including multiorgan failure...
We describe a simple micropump for disposable microfluidic devices. The pump is constructed using freeze-dried disc of superabsorbent polymer (SAP). absorbs solution in flow channel and swells upward pumping chamber. Despite the structure this device, rate absorption remains constant can be adjusted by changing composition SAP, its size, dimensions medium to absorbed. action initiated applying an electrical signal switchable hydrophobic valve. integrated approach SAP valve could facilitate...
Background: Smoking is one of the preventable causes disease in middle and low-income countries. This study was conducted smokers non-smokers to observe changes total count leukocytes cigarette relation body mass index (BMI) blood pressure (BP). Methods:The populations were from different sources including diagnostic center general hospital, consisted 58 77 non-smokers, with a broad range age groups. The variables considered for this smoking status current samples subject, anthropometric...
This study examined the performance of a microfluidic device for sperm separation assuming that X- and Y-sperm have different surface electrical charges. The proposed chip was first tested with electrically charged particles, namely TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> -coated polystyrene (PS) beads, to mimic spermatozoa. Negatively PS beads were fabricated in simple efficient manner. These characterised using X-ray...
The study of micellar behavior SDS in presence additives such as metal (Fe, Cu, Co, Zn) phendione complexes, calcium salts and amino acids aqueous solutions surfactant-solute-1-(2-pyridylazo)-2-naphthol(PAN) dye ternary systems were carried out by measuring the absorbance PAN at 470 nm. complexes [Fe(phendione)3](ClO4)2·2H2O, [Co(phendione)3](ClO4)2·3H2O, [Cu(phendione)2] (ClO4)2·2H2O, decreased CMC value from 8 mM to 0.70 mM, 0.40 1.0 respectively. In (CaCl2, CaF2, acetate, oxalate·H2O)...
Microbial fuel cell (MFC) that was configured with the carbon felt electrode and cation exchange membrane, inoculated mixed culture demonstrated to yield bioelectricity. The operated under four external loads pHs ranging from 4 10 total operation monitored up 25 days. presented results revealed potentiality of maximum current power production achieved while hexacyanoferrate(III) used as a cathodic reaction at neutral pH condition media. density 2.5 Am -2 1410 mWm were observed on th day an...
Sickle cell disease (SCD) is one of the most common hemoglobinopathies, which caused by replacement glutamic acid with valine at sixth position beta-globin amino chain sickling entire red blood cells in homozygous (Hb S/S) condition. There are many analyses and screening procedures were developed to detect sickle anemia early age birth, especially from heel prick blood, but case developing countries, it would be more acceptable disorder using umbilical cord just after birth rather than...
The study was conducted to assess physical parameters, major ionic constituents and trace metals content at Gazipur area know the quality of effluent during March in 2013 for irrigation usage. pH collected samples were almost neutral but case TDS values all suitable where considering EC harmful irrigation. anion i.e. CO3, SO4 PO,sub>4 Cl HCO3 unsuitable Similarly, cation Na, Mg, Ca K Among studied (Fe, Zn, Cu, Pb, Cd Mn) except two Mn Cu. On other hand, SAR most excellent category SSP...