A5072275908- Adsorption and biosorption for pollutant removal
- Quantum, superfluid, helium dynamics
- Spectroscopy and Quantum Chemical Studies
- Electrospun Nanofibers in Biomedical Applications
- Advanced Chemical Physics Studies
- biodegradable polymer synthesis and properties
- Bone Tissue Engineering Materials
- Nanomaterials for catalytic reactions
- Silk-based biomaterials and applications
- Extraction and Separation Processes
- Theoretical and Computational Physics
- TiO2 Photocatalysis and Solar Cells
- High-Temperature Coating Behaviors
- Advanced materials and composites
- Nanocomposite Films for Food Packaging
- Advanced Photocatalysis Techniques
- Titanium Alloys Microstructure and Properties
- Iron oxide chemistry and applications
- High Entropy Alloys Studies
- Minerals Flotation and Separation Techniques
- Metallurgy and Material Forming
- Additive Manufacturing Materials and Processes
- Acoustic Wave Phenomena Research
- Advanced Thermodynamics and Statistical Mechanics
- Recycling and Waste Management Techniques
Universitatea Națională de Știință și Tehnologie Politehnica București
2015-2024
University of Bucharest
2009-2019
Gheorghe Asachi Technical University of Iași
2009-2016
University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca
2015
Polytechnic University
2009
University of California, Berkeley
2004-2007
Center for Theoretical Biological Physics
2004-2006
Brown University
2003-2004
Synthesis and characterization of iron oxide nanoparticles coated with a large molar weight dextran for environmental applications are reported. The first experiments involved the synthesis which were at different concentrations. was performed by co-precipitation technique, while coating carried out in solution. obtained characterized using scanning electron microscopy (SEM), transmission (TEM), X-ray diffraction spectrometry, Fourier transform infrared spectroscopy superconducting quantum...
In this study, lemon balm (Melissa officinalis L.) and dill (Anethum graveolens essential oils (EOs) were encapsulated into collagen hydrolysates extracted from bovine tendons rabbit skins, both mixed with chitosan (CS) by using the coaxial electrospinning technique for potential wound dressing applications. The morphology chemical composition of electrospun nanofibers investigated scanning electron microscopy (SEM) attenuated total reflectance Fourier transform infrared spectroscopy...
We show that the acceptance probability for swaps in parallel tempering Monte Carlo method classical canonical systems is given by a universal function depends on average statistical fluctuations of potential and ratio temperatures. The law, called incomplete beta valid limit two temperatures involved are close to one another. An empirical version which involves heat capacity system, developed tested Lennard-Jones cluster. argue best initial guess distribution intermediate geometric...
We introduce the concept of effective fraction, defined as expected probability that a configuration from lowest index replica successfully reaches highest during exchange Monte Carlo simulation. then argue fraction represents an adequate measure quality sampling technique, far swapping is concerned. Under hypothesis correlation between successive exchanges negligible, we propose technique for computation relies solely on values acceptance probabilities obtained at end The utilized study...
Due to its valuable compounds, food waste has been gaining attention in different applications, such as life quality and environment. Combined with circular economy requirements, a valorization method for waste, especially banana was convert them into adsorbents advanced properties. The after thermal treatment, used high removal performances (100%) the of heavy metals, Cr, Cu, Pb, Zn, but their small particle size makes very hard recover reuse. For this reason, biopolymeric matrix...
This review summarizes recent data related to the management of marine plastic litter promote sustainable development. It discusses distribution and identification litter, assesses potential socio-economic environmental impacts these pollutants, explores their recovery strategies, from a circular economy perspective. The main findings indicate that majority originates land-based sources. Current technologies approaches for valorizing include mechanical chemical recycling, blockchain by...
Several recipes based on PLA, bio-plasticizers, and active agents such as vitamin E cold-pressed rosehip seed oil encapsulated into chitosan by the emulsion method named here modified (CS-M) were elaborated melt compounding for food packaging applications. Resulted biocomposites have been investigated from point of view physical-mechanical, thermal, barrier, antimicrobial, antioxidant properties to select formulations with optimum features produce trays films The obtained results showed that...
The electrospun nanosystems containing poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and 1 wt% Fe doped ZnO nanoparticles (NPs) (with the content of dopant in range 0–1 Fe) deposited onto polylactic acid (PLA) film were prepared for food packaging application. They investigated by scanning electron microscopy (SEM), energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FT-IR), diffraction (XRD), antimicrobial analysis, photoelectron spectrometry (XPS) techniques....
The equilibrium properties of classical Lennard-Jones (LJ38) versus quantum Ne38 clusters are investigated. simulations use both the path-integral Monte Carlo (PIMC) and recently developed variational-Gaussian wave packet (VGW-MC) methods. PIMC MC implemented in parallel tempering framework. heat capacity Cv(T) curve agrees well with that Neirotti et al. [J. Chem. Phys. 112, 10340 (2000)], although a much larger confining sphere is used present work. shows peak at about 6 K, interpreted as...
In today’s world, due to population increase, there are many alarming and potential catastrophic problems like climate change, environmental pollution an enormous mass of wastes constantly produced by humankind find innovative solutions for the management, recycling, valorization biowaste from agricultural production, food processing, organic household residues. The search sustainable efficient wastewater treatment technologies has gained scientific interest recently; particular focus is on...
Previous heat capacity estimators used in path integral simulations either have large variances that grow to infinity with the number of variables or require evaluation first- and second-order derivatives potential. In present paper, we show total energy by T-method estimator TT-method can be implemented a finite difference scheme stable fashion. As such, resulting are requires potential function only. By comparison task computing partition function, k+1 times more calls potential, where k...
The use of recycled polypropylene (RPP) as raw material for various industries has been known. However, the mechanical and thermal properties products are lower than those material. objective this study was to obtain investigate modified with commercial elastomers possible applications. compounded RPP-based thermoplastic were investigated in order determine their (melt flow index (MFI), differential scanning calorimetry (DSC), VICAT softening temperature (VST), heat deflection (HDT)),...
The increasing demand for sustainable energy solutions has prompted a significant interest in non-conventional sources, leading to the development of innovative materials that can enhance conversion and storage efficiency. This review paper explores pivotal role zirconium dioxide (ZrO2) industrial applications related technologies, highlighting its contributions circular economy. We discuss various synthesis methods ZrO2, including top-down bottom-up approaches, elucidating how these...
Concentrated collagen hydrolysate (HC10CC), rabbit glue (RCG), and keratin (KH) were investigated in terms of their extraction from mammalian by-products processing by electrospinning. The electrospun nanofibers characterized scanning electron microscopy coupled with the energy dispersive X-ray spectroscopy (SEM/EDS), attenuated total reflectance Fourier transform infrared (ATR-FTIR), differential calorimetry (DSC), indentation tests. cytotoxicity was conducted on L929 fibroblast cells using...
Detailed studies of the thermodynamic properties selected binary Lennard-Jones clusters type X13-nYn (where n=1, 2, 3) are presented. The total energy, heat capacity, and first derivative capacity as a function temperature calculated by using classical path integral Monte Carlo methods combined with parallel tempering technique. A modification in phase change phenomena from presence impurity atoms quantum effects is investigated.
The goal of the present paper is to explore properties medium molecular-weight chitosan/polyvinyl alcohol blends mixed in volume ratios 75:25, 50:50, and 25:75 obtained by solution casting. Cross-linked chitosan/poly(vinyl alcohol) nanostructures were treating these with 5% (v/v) glutaraldehyde. prepared films characterized attenuated total reflectance – Fourier transform infrared spectroscopy (FT-IR), dynamic light scattering, cytotoxicity, while nanostructured materials examined scanning...
Massive amounts of industrial and agricultural water around the world are polluted by various types contaminants that harm environment affect human health. Alginic acid is a very versatile green polymer used for heavy metal adsorption due to its availability, biocompatibility, low cost, non-toxic characteristics. The aim this paper was prepare new low-cost hybrid composite beads using sodium alginate with treated montmorillonite kaolin copper (Cu) cations. Modified unmodified clays were...
The authors address the problem of sampling double-ended diffusive paths. ensemble paths is expressed using a symmetric version Onsager-Machlup formula, which only requires evaluation force field and which, upon direct time discretization, gives rise to integrator that accurate second order. Efficiently this avoiding well-known stiffness associated with infinitesimal Brownian increments path, as well different type coarse features long fine-feature eliminated use fast algorithm,...