A5061271813- Tree-ring climate responses
- Geology and Paleoclimatology Research
- Plant Water Relations and Carbon Dynamics
- Botany and Plant Ecology Studies
- Forest ecology and management
- Heavy metals in environment
- Marine and environmental studies
- Heavy Metals in Plants
- Essential Oils and Antimicrobial Activity
- Heavy Metal Exposure and Toxicity
- Plant responses to elevated CO2
- Nanoparticles: synthesis and applications
- Water Quality and Pollution Assessment
- Ancient and Medieval Archaeology Studies
- Geochemistry and Geologic Mapping
- Hydrology and Drought Analysis
- Global Trade and Competitiveness
- Radioactivity and Radon Measurements
- Lichen and fungal ecology
- Geological Formations and Processes Exploration
- Geological formations and processes
- Phytochemistry and Bioactivity Studies
- Potassium and Related Disorders
- Tree Root and Stability Studies
- Copper Interconnects and Reliability
National Institute for Research and Development in Forestry "Marin Drăcea"
2016-2025
Ştefan cel Mare University of Suceava
2017-2021
Abstract Heavy metal pollution of river freshwater environments currently raises significant concerns due to the toxic effects and fact that heavy behavior is not fully understood. This study assessed contamination level eight metals trace elements (Cr, Ni, Cu, Zn, As, Pb, Cd, Hg) in surface sediments 19 sites 2018 during four periods (March, May, June, October) Olt River sediments. Multivariate statistical techniques were used, namely, one-way ANOVA, person product-moment correlation...
Abstract The relationship between metal levels in the Olt River ecosystem southern Romania (measured during 2018‒2019, with 1064 sediment and water samples) daily climate data were explored to assess need for targeted source identification mitigation strategies. In 2018, there was a strong Pb, As, Cd, Hg contents temperature ( r > 0.8, p < 0.001). Mercury sediments had positive correlation precipitation, correlated minimum May 2018 0.01). July 2019, heavy metals positively...
Summary Growth rates of European silver fir ( Abies alba Mill.) rapidly increased in the last century. At same time, ring widths declined at species southern distribution limits Mediterranean. Such diverse growth trends and responses have largely been attributed to regional climate conditions, but this was prior considering species' post‐glacial phylogeny. A dendrochronological network composed 1961 tree‐ring width series TRW ) from 78 sites between 365 1400 m a.s.l. along Carpathian Arc...
In recent years, phytofunctionalized AgNPs have attracted great interest due to their remarkable biological activities. the present study, were synthesized using Abies alba and Pinus sylvestris bark extracts. The chemical profile of these extracts was analyzed by LC-HRMS/MS. As a first step, synthesis parameters (pH, AgNO3 concentration, ratio extract AgNO3, temperature, reaction time) optimized. characterized ATR-FTIR spectroscopy, DLS, SEM, EDX, TEM. Their antioxidant, cytotoxic,...
In addition to the naturopathic medicines based on antiseptic, anti-inflammatory, anticancer, or antioxidant properties of plant extracts that have been capitalized upon through pharmaceutical industry, increasing interest food industry in this area requires potent new materials capable supporting market. This study aimed evaluate vitro amino acid contents and activities ethanolic from sixteen plants. Our results show high accumulated contents, mainly proline, glutamic, aspartic acid. The...
Lithium (Li) is present in human nutrition based on food intake, and several studies recommend it for treating mood disorders, even if the biological proprieties biochemical mechanisms represent basis its use as an essential element. The Li content was evaluated using inductively coupled plasma mass spectrometry technique (ICP-MS) 1071 beverage samples from Romanian market. results show that had a decreasing mean concentration follows: vegetables leafy > bulbous fructose leguminous egg...
Heavy metals (HMs) from industrial pollution are bioaccumulated in plant tissues, but we lack information on their spatial variability forest ecosystems. Picea abies L. needles, bark, and litter were collected at 17 sites along a 1000-m-wide altitudinal gradient southern Romania to measure concentrations of mineral nutrients, non-toxic metals, toxic metals. Isotopic ratios (206/207Pb, 87/86Sr) used infer contamination origins. We found significant differences needle versus bark elements’...
Silver nanoparticles synthesized using plant extracts as reducing and capping agents showed various biological activities. In the present study, colloidal silver nanoparticle solutions were produced from aqueous of Picea abies Pinus nigra bark. The phenolic profile bark was analyzed by liquid chromatography coupled to mass spectrometry. synthesis monitored UV-Vis spectroscopy measuring Surface Plasmon Resonance band. characterized attenuated total reflection Fourier transform infrared...
Dendrochronological research in North-Central Europe and the East Mediterranean has produced networks of long regional oak ( Quercus sp.) reference chronologies that have been instrumental dating, provenancing, paleoclimate applications. However, until now these two important tree-ring not successfully linked. Oak forests historical/archaeological sites southeastern provide key for linking European networks, but previous dendrochronological this region largely absent. This article presents...
The present study was conducted to quantify the daily intake and target hazard quotient of four essential elements, namely, chromium, cobalt, nickel, copper, toxic trace mercury, cadmium, lead, arsenic. Thirty food items were assigned five categories (seeds, leaves, powders, beans, fruits) analyzed using inductively coupled plasma-mass spectrometry. Factor analysis after principal component extraction revealed common metal patterns in all foodstuffs, hierarchical cluster analysis, an...
Abstract The present study evaluates the biosynthesis of AgNPs and AuNPs using aqueous ethanolic Geum urbanum L. rhizome extracts. biosynthesized metal nanoparticles (MNPs) were characterized UV-Vis spectroscopy, FTIR, DLS, SEM, EDX, TEM. spectra confirmed synthesis through peaks corresponding to surface plasmon effect metallic Ag (400–430 nm) Au (530–570 nm). FTIR analysis indicated that alcohols, phenols, proteins, carbohydrates from G. extracts composition are involved in MNPs synthesis....
Background Increasing lithium (Li) demand worldwide due to its properties and role in renewable energy will raise water reservoir pollution side effects on human health. Divergent results regarding Li concentration affective disorders are found the literature, which is why regional reports expected. Objective The present study evaluated occurrence health risks resulting from oral exposure, respectively, relationship between alkali metals (Li, Na, K) minerals (Mg, Ca) balanced purified...
Natural ecosystems are polluted with various contaminants, and among these heavy metals raise concerns due to their side effects on both environment human health. An investigation was conducted essential oil samples, comparing similar products between seven producers, the results indicated a wide variation of metal content. The recommended limits imposed by European Union regulations for medicinal plants exceeded only in Mentha × pipperita (Adams, 0.61 mg/kg). Except Thymus vulgaris,...
The climate warming trend challenges the chemical risk associated with wine production worldwide. present study investigated possible difference between profile during drought year 2012 compared to post-drought 2013. Toxic metals (Cd and Pb), microelements (Mn, Ni, Zn, Al, Ba, Cu), macroelements (Na, Mg, K, Ca, P), isotopic ratios (87Sr/86Sr 206Pb/207Pb), stable isotopes (δ18O, δ13C, (D/H)I, (D/H)II), climatic data were analyzed. multivariate technique, correlation analysis, factor partial...
To determine oak tree sensitivity to climate fluctuations as a precipitation predictor, we eliminated monthly data and computed the growth-precipitation correlation using mean daily values calculated in time intervals.Precipitation from March through May is primary limiting factor intra-annual tree-ring growth for Quercus robur L. southern Romania.Bootstrap correlations between residual series average showed positive dependence (r = 0.4).Using CLIMTREG software data, obtained of (0.6) better...