A5012789284- Surfactants and Colloidal Systems
- Liquid Crystal Research Advancements
- Polysaccharides Composition and Applications
- Hydrogels: synthesis, properties, applications
- Characterization and Applications of Magnetic Nanoparticles
- Electrospun Nanofibers in Biomedical Applications
- Material Dynamics and Properties
- Advanced Materials and Mechanics
- Rheology and Fluid Dynamics Studies
- Polymer composites and self-healing
- Advanced Drug Delivery Systems
- Plant Reproductive Biology
- Nanoparticle-Based Drug Delivery
- Microbial Metabolic Engineering and Bioproduction
- 3D Printing in Biomedical Research
- Fiber-reinforced polymer composites
- Tissue Engineering and Regenerative Medicine
- Vibration Control and Rheological Fluids
- Drug Solubulity and Delivery Systems
- Polymer Nanocomposite Synthesis and Irradiation
- Advanced Sensor and Energy Harvesting Materials
- Bioinformatics and Genomic Networks
- Pickering emulsions and particle stabilization
- Metabolomics and Mass Spectrometry Studies
- Polymer Nanocomposites and Properties
University of Puerto Rico-Mayaguez
2009-2022
Center for Systems Biology Dresden
2018
TU Dresden
2018
DuPont (United States)
2005
University of Delaware
2005
Abstract Motivation Analyzing associations among multiple omic variables to infer mechanisms that meaningfully link them is a crucial step in systems biology. Gene Set Enrichment Analysis (GSEA) was conceived pursue this aim computational genomics, unveiling significant pathways associated certain gene signatures under investigation. Lipidomics rapidly growing field, and absolute quantification of lipid abundance by shotgun mass spectrometry generating high-throughput datasets depict...
The temperature dependent response of magnetic nanoparticles in oscillating fields was used to monitor gelation the surrounding fluid at size scale nanoparticles. dynamic susceptibility PEG-coated cobalt ferrite suspended an aqueous gelatin solution had sharp transitions which correlated with and melting observed using macroscale rheological measurements. reported method requires small sample volumes provides information on network formation probe
The effect of varying electrospinning parameters is reported for the production collagen nanofibers from acetic acid with controlled fiber diameter, orientation, and mechanical properties. Nanofibers a range diameters 175–400 nm are obtained by either voltage or flow rate. An increase in nanofiber alignment observed increasing injection Mechanical testing these fibers reveals that elasticity modulus can be tuned 2.7–4.1 MPa selection crosslinking method. Fourier transform infrared...
Cobalt ferrite (CoFe2O4) nanoparticles (∼12nm diameter) were suspended in the polymer liquid crystal hydroxypropyl cellulose (HPC)∕m-cresol to obtain a new type of ferronematic. Suspension these particles 35%wt HPC m-cresol did not affect appearance crystalline phase as evidenced by small angle x-ray scattering. Magnetic measurements performed on HPC∕m-cresol∕CoFe2O4 ferronematic showed ferromagnetic behavior and magnetic hysteresis. In addition, rheometry samples magnetorheological effect...
The use of tailored synthetic hydrogels for in vitro tissue culture and biomanufacturing provides the advantage mimicking cell microenvironment without issues batch-to-batch variability. To that end, this work focused on design, characterization, preliminary evaluation thermo-responsive, transparent terpolymers based N-isopropylacrylamide, vinylphenylboronic acid, polyethylene glycol manufacturing applications. Polymer physical properties were characterized by FT-IR, 1H-NMR, DLS, rheology,...
Past studies have reported that colloids of a single size dispersed in the isotropic phase mesogenic solvent can form colloid-rich networks (and gels) upon thermal quenching system across isotropic–nematic boundary mesogens. Herein we report observation and characterization complex hierarchical microstructures when bidisperse colloidal suspensions nanoparticles (NPs; iron oxide with diameters 188 ± 20 nm or poly(methyl methacrylate) 150 15 nm) microparticles (MPs; polystyrene 2.77 0.20 μm)...
The dynamics of rodlike polymer molecules in the nematic phase are mainly controlled by rotational diffusivity, Dr, which is highly sensitive to molecular weight. However, few experimental determinations Dr for solutions at concentrations have been made. We invoke Doi's theory liquid crystalline rheology extract from measurements transverse Miesowicz viscosity, ηc, solutions. Transverse viscosities were measured a series poly(n-hexyl isocyanate) (PHIC) polymers fixed dimensionless...
Liquid crystal ferrosuspensions (LCFs) were obtained by inclusion of magnetic microparticles in a nematic liquid (NLC) at mass fractions up to 20%. The phase transition the NLC promotes formation space filling particle network and an enhancement mechanical properties. Polarized optical microscopy (POM) differential scanning calorimetry used study microparticle formation. POM images show that anisotropic structure formed when external field was applied, whereas quasihomogeneous cellular is...