A5050702796- Analytical Chemistry and Chromatography
- Phase Equilibria and Thermodynamics
- Microfluidic and Capillary Electrophoresis Applications
- Graphene research and applications
- Chromatography in Natural Products
- Chemical Thermodynamics and Molecular Structure
- Fullerene Chemistry and Applications
- Advanced Chemical Physics Studies
- Subcritical and Supercritical Water Processes
- Crystallization and Solubility Studies
- Adsorption, diffusion, and thermodynamic properties of materials
- Ionic liquids properties and applications
- Chemical and Physical Properties in Aqueous Solutions
- Advanced Chemical Sensor Technologies
- Zeolite Catalysis and Synthesis
- Bacterial Identification and Susceptibility Testing
- Advanced Physical and Chemical Molecular Interactions
- Photorefractive and Nonlinear Optics
- Surface Chemistry and Catalysis
- Biosensors and Analytical Detection
- Carbon Nanotubes in Composites
- Fiber-reinforced polymer composites
- Remote Sensing and LiDAR Applications
- Acoustic Wave Resonator Technologies
- Mesoporous Materials and Catalysis
Czech Academy of Sciences, Institute of Analytical Chemistry
2014-2024
Sandia National Laboratories California
2023
University of Missouri
2008-2020
Waldorf College
2019-2020
Langley Research Center
2019
Virtuelle Fabrik (Switzerland)
2017
Software (Spain)
2017
Northern Kentucky University
2014-2015
University of Northern Iowa
2005-2015
Johns Hopkins University Applied Physics Laboratory
1981-2010
Graphene single layers grown by chemical vapor deposition on crystal Cu substrates are subject to nonuniform physisorption strains that depend the orientation of surface. The revealed in Raman spectra and quantitatively interpreted molecular dynamics (MD) simulations. An average compressive strain order 0.5% is determined graphene Cu(111). In (100), MD simulations interpret observed highly strains.
The high-energy spectroscopic study of the electronic structure fullerenes and their compounds in solid state is reviewed. It shown that photoemission electron energy-loss spectroscopy transmission provide powerful tools for experimental C60, C70 higher fullerenes, as well formed by intercalation with alkali alkaline-earth metals. Topical issues field are addressed, such role played correlation, disorder electron-phonon coupling.
Stringent regulations of the maximum content sulfur in transportation fuels have prompted an intense search for new processes deep desulfurization to complement common catalytic hydrodesulfurization. One alternative under development involves extraction sulfur-containing aromatic compounds (SAs) from diesel fuel and gasoline with ionic liquids (ILs). In these applications, recycling ILs will be highly important, reextraction SAs supercritical carbon dioxide (scCO2) appears a possible method...
The efficient storage and transportation of natural gas is one the most important enabling technologies for use in energy applications. Adsorption porous systems, which will allow high-density fuel under low pressure, possible solutions. We present discuss extensive grand canonical Monte Carlo (GCMC) simulation results adsorption methane into slit-shaped graphitic pores various widths (between 7 angstrom 50 angstrom), at pressures P between 0 bar 360 bar. Our shed light on dependence film...
Aqueous solubilities of two- to four-ring solid polycyclic aromatic hydrocarbons (PAHs) (naphthalene, anthracene, 1,2-benzanthracene, triphenylene, and p-terphenyl) were measured at temperatures within 313 K the PAH melting point pressures range (4 8) MPa by dynamic method combined with gas chromatography/mass spectrometry. A novel feature apparatus was use a capillary restrictor minimize system volume downstream sampling point. The results for naphthalene anthracene compare favorably...
Identification and prevention of Staphylococcus aureus-caused infections may benefit from a fast dependable method to distinguish between the methicillin-resistant (MRSA) methicillin-susceptible (MSSA) S. aureus strains. The current methods involving polymerase chain reaction and/or other molecular tests are usually laborious time-consuming. We describe here low-cost employing capillary zone electrophoresis (CZE) MRSA MSSA. makes use supercritical water-treated fused silica capillary, inner...
A semiempirical relationship was developed to correlate solubility of solid polycyclic aromatic hydrocarbons (PAHs) in pressurized hot water using only pure-component properties. The required properties include cohesive energy density, internal pressure, and relative permittivity (dielectric constant), all at the particular temperature pressure. PAHs triple-point temperature, enthalpy fusion, molar volume subcooled liquid, solid. correlation from experimental data eight 2- 5-ring...
The origin of diversity in the reported ferroelectric phase transition (Curie) temperatures Tc, KTiOPO4 (KTP) crystals grown from self-fluxes has been studied. A series by top-seeded solution method fluxes different K/P molar ratios and solute concentrations, covering most KTP crystallization field K2O–P2O5–TiO2 ternary system. Curie as-grown high-temperature annealed have measured using standard dielectric technique found to spread 883 960 °C. We show that actual Tc values depend on...
We report grammar inference experiments on partially parsed sentences taken from the Wall Street Journal corpus using inside-outside algorithm for stochastic context-free grammars.The initial process makes no ,assumption of kinds structures and their distributions.The inferred is evaluated by its predicting power comparing bracketing held out imposed with partial bracketings these given in corpus.Using part-of-speech tags as only source lexical information, high accuracy achieved even a...
Previous work has shown that the deep-ocean internal-wave field little variability and can be described by a stationary spectrum. This analysis of upper-ocean data supports hypothesis variable (within upper 200 m) represented as fluctuations superimposed on base-state spectrum, such given model Of Garrett Munk. That is, we hypothesize is present in addition to background, rather than instead. The parameters Garrett-Munk are particularized best fit IWEX data; then directly compared ocean from...
Aqueous solubilities of lower diamondoid hydrocarbons, adamantane (C10H16) and diamantane (C14H20), were measured along the 5 MPa isobar at temperatures between 313 K solid–liquid–vapor triple-point temperature solute. The activity coefficients individual diamondoids in saturated aqueous solutions estimated from solubility data employing two different approximations pure-solute heat capacity difference ΔCP2. compared with those polycyclic aromatic hydrocarbons same carbon numbers. Depending...
The prospects of near- and supercritical water for treatment the inner surfaces fused silica capillaries have been tested employing an in-lab-assembled apparatus. Unlike all other agents used purpose, cannot introduce any undesirable heteroatoms to treated surface. Theoretical background this work comes from well-known fact that near its critical point can solubilize silica. results show depending on temperature, flow rate, mode, exposure time, high-temperature has wide-ranging effects both...