A new functional Fe-30Mn-5Si-xCu (x = 1.5 and 2 wt%) biomaterial was obtained from the levitation induction melting process evaluated as a biodegradable material. The degradation characteristics were assessed in vitro using immersion tests simulated body fluid (SBF) at 37 ± 1 °C, evaluating mass loss, pH variation that occurred solution, open circuit potential (OCP), linear cyclic potentiometry (LP CP), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) nano-FTIR. To...

Using the dual pulsed laser (DPL) ablation technique applied to a target made of hemp seeds pressed in stainless steel ring, thin layers were deposited on glass support and fabric. In order improve absorption radiation by material (the yield being low one), two procedures used. The first consisted including irradiated spot portion ring which seed is located, resulting HS-DPL/glass HS-DPL/hemp obtain biocompatible layers, second process mixed with turmeric powder whose effectiveness...

Freshwater has been polluted with plastics for decades, but only a few scientific papers have described it until now. This is the first study to investigate presence of meso- and microplastic particles in digestive tract fish from an inland river Romania. Fish specimens representing ichthyocenosis Oituz River were sampled by electrofishing at different sampling sites (upstream downstream) 2004, 2008 2015, results compared. Plastic classified counted according shape as: fibers, films,...

This research was aimed at investigating the Saharan dust cloud recorded on 11 and 12 May 2020, by AERONET AOD stations in Italy, Austria, Slovakia, Poland, Ukraine, Romania determining whether it affected area of Republic Moldova. During this period, Chisinau monitoring site not operational. The incentive for investigation discovery a high sediment load rainwater collected 2020 Pelinia, village Dochia district Moldova, southeastern part Europe (47.8780 latitude, 27.8344 longitude), which...

A new possible method to produce a transdermal patch is proposed in this paper. The study refers the pulsed laser deposition (PLD) applied on turmeric target order obtain thin layers. Under high power irradiation of 532 nm wavelength, films containing curcuminoids were obtained different substrates such as glass and quartz (laboratory investigation) hemp fabric (practical application). Compared FTIR, SEM-EDS LIF analyses proved that film chemical composition mainly demethoxycurcumin...

High-power laser irradiation interaction with natural polymers in biocomposites and Laser-Induced Chitin Deacetylation (LICD) was studied this work, order to produce thin films consisting of chitosan composite. The new method can lead a cutting-edge technology, as response the concern regarding accumulation "natural biological waste" its use. process consists high-power applied on oyster shells target deposition ablated material different substrates. obtained we analyzed by FTIR, UV-VIS LIF...

The study in this paper presents a new material that was produced as thin film by the Pulsed Laser Deposition technique (PLD) using 532 nm wavelength and 150 mJ/pulse laser beam on hemp stalk target. analyses performed spectroscopic techniques (Fourier Transform Infrared Spectroscopy—FTIR, Laser—Induced Fluorescence Spectroscopy—LIF, Scanning Electron Microscopy coupled with Energy Dispersive X-ray—SEM-EDX, Atomic Force Microscopy—AFM optical microscope) evidenced biocomposite consisting of...

Identifying a dark brown color of the rainwater deposited on streets after landfill waste fire, persisting few months an analysis water samples collected from rainfall reveled characteristic compounds as for those resulted urban combustion. A simulation burning materials specific to be thrown was conducted in laboratory and resulting ashes have been analyzed compared with dry material obtained rain waters collected. FTIR spectra two proved noticeable similarity among them, evidencing very...

In the study presented in this paper, results obtained by producing nanocomposites consisting of a silver citrate thin layer deposited on hemp fiber surfaces are analyzed. Using pulsed laser deposition (PLD) method applied to target with impurities nickel and iron, formation film is performed various ways discussed based Fourier Transform Infrared (FTIR) Scanning Electron Microscopy coupled Energy Dispersive X-ray (SEM-EDX) spectroscopy analyses. A mechanism physico-chemical processes that...

Dual-pulsed (DPL) laser deposition using oyster shells as targets was studied in order to find out if this method can replace the use of high-power pulsed lasers. Aspects related changes morphological structure thin layer but also chemical composition obtained were analyzed and compared with target well layers a higher power single-pulsed (SPL) regime. Orthorhombic structures noticed Scanning Electron Microscopy for film DPL mode irregular particles SPL mode. The deacetylation process during...

On the 23rd of September 2022, a small intensive aquaculture unit populated with rainbow trout (Oncorhynchus mykiss) reported increased mortality in adults and juvenile fish. The comprised 12 enclosed concrete basins capacity ten cubic meters water, 150 kg fish each. Fish were subjected to clinical examination on site, after which whole harvested for bacteriological histopathological examination. Water quality parameters examined using classic biochemical methods Fourier Transform Infrared...

Crystalline silver thin layers were obtained by high-energy pulsed laser ablation without heating of the deposition substrate. The fluid Plateau-Rayleigh (PRI), Rayleigh – Taylor (RTI) and Richtmyer Meshkov (RMI) instabilities, as well crown splash induced during (PLD) in high energy regime, resulting ring pearl shaped structures, offer benefit increased sorption surface. These morphological structures for make them interest catalytic applications. study presented with this work addresses...

Crystalline silver thin layers were obtained using high-energy pulsed laser ablation without the heating of deposition substrate. The fluid Plateau–Rayleigh (PRI), Rayleigh–Taylor (RTI), and Richtmyer–Meshkov (RMI) instabilities, as well crown splash induced during (PLD) in high energy regime, resulting ring pearl-shaped structures, offer benefit an increased sorption surface. These morphological structures for make them interest catalytic applications. This study addresses both fundamental...

In this paper, several researches were undertaken related to a violent phenomenon, characterized by sonic boom, felt on an area of at least 500 km2, shortly followed the fall rock fragments that then recovered from ground. These presented different appearance characteristics those materials and rocks specific respective area. Spectroscopic petrographic analyses performed identify composition, morphological crystallinity in order elucidate nature collected samples. Using FTIR spectroscopy...

Abstract Urban air/environmental pollution as a major concern of contemporary civilization, substantially affecting the health residents, requires identification both physico-chemical specificity and generating sources. Particle matter (PM) monitored in atmosphere should be associated to their chemical composition that allows sources enhancement contributor sinks mitigation factor but also possible spreading agent it has been reported rain fall for some pollutants cathegories. After number...

Copper sulfate pentahydrate (CuSO4·5H2O) used as target in the pulsed laser deposition (PLD) process led to producing thin films with dichroic properties. The coatings were applied on glass slab and hemp fabrics. Investigation of CuSO4·5H2O transformation during ablation based FTIR analysis showed that film chemical composition is a mixture different products resulted from dehydration decomposition, followed by melting vaporization CuO recombination species plasma ablation. Simulation COMSOL...

The study in this paper was carried out as a result of the observation pollution phenomena and foaming effects associated with anthropogenic activities, including street cleaning activity. processes dust binding used order to reduce PM10 PM 2.5 has been proven be inefficient, even contributing particulate matter. Our results suggest that use binders must integrated technique includes methods removing agglomerated particle structures resulting from process coagulation or flocculation. These...

Influences of landfills on the surrounding waters have been studied in neighbourhood an urban area. Analytical and spectroscopic methods were used to investigate a canal situated landfill. Dangerous chemical compounds identified water as pollutants resulting from physico-chemical processes degradation landfill waste. The quick method with gas sensor detection colorimetric ion identification using commercial Quantofix kit, well precipitation AgNO3, offered preliminary information completed by...

Abstract Effects of 532 nm and 320 mJ laser beam on aqueous solution Reactive Blue 21 (RB21), a copper based reactive dye, have been studied in both presence absence garnet gemstone with the aim to receive proper coating hemp fibers contained yarns woven texture while reducing dyeing time compared classic exhaustion method. Results show that influenced process RB21, enhancing absorption reaction RB21 composite structured fibers, effect observed color intensities for all samples measured...