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Asociația Ad Astra a anunțat câștigătorii Premiilor Ad Astra 2022: http://premii.ad-astra.ro/. Proiectul și-a propus identificarea și popularizarea modelelor de succes, a rezultatelor excepționale ale cercetătorilor români din țară și din afara ei.
Publicatii proprii
Bird communities in traditional wood-pastures with changing management in Eastern Europe
Wood-pastures are fragile ecosystems because they were formed by, and depend on specific, low-intensity multifunctional management. Although their ecological and cultural significance is high, wood-pastures are rapidly deteriorating all over Europe, mainly due to changing land use. We still lack a basic understanding of the ecological value of wood-pastures, and in which features they differ from other landscape elements. In this paper we investigated
Read moreA holistic approach to studying social-ecological systems and its application to Southern Transylvania
Global change presents risks and opportunities for social-ecological systems worldwide. Key challenges for sustainability science are to identify plausible future changes in social-ecological systems, and find ways to reach socially and environmentally desirable conditions. In this context, regional-scale studies are important, but to date, many such studies have focused on a narrow set of issues or applied a narrow set of tools. Here, we present
Read moreChanges in annual temperature extremes in the Carpathians since AD 1961
The Carpathian Mountains region cover areas from seven countries of central and southeastern Europe, the mountain chain having major regional influences on the temperate climate, specific to latitudes between 43°N and 49°N. In order to identify changes in the annual temperature extremes, the Mann–Kendall nonparametric trend test has been applied to several thermal indices, recommended by the expert team on climate change detection and indices.
Read moreAlongshore variations in beach-dune system response to major storm events on the Danube Delta coast
Deltaic beach-dune systems are extremely dynamic, responding to processes operating on scales from short-term variations related to storm and floods to long-term evolution driven by large-scale sediment dynamics (including lobe switching). On Danube Delta beaches, coastal storms and associated processes lead to a wide range of morphological impacts from moderate deposition to significant erosion. Coastal processes develop with marked temporal differences
Read moreDetermination of the complex refractive index of cell cultures by reflectance spectrometry
In this paper we propose a new approach to using reflectance spectrometry in connection with the Kramers-Kronig analysis for the determination of the complex refractive index of biological cells. Applying this procedure, the real and imaginary parts of the refractive index (refractive index and extinction coefficient) can be simultaneously determined. The accuracy of this procedure in the determination of the refractive index and extinction coefficient
Read moreClimate of the Carpathian Region in the period 1961-2010: climatologies and trends of 10 variables
The Carpathians are the longest mountain range in Europe and a geographic barrier between Central Europe, Eastern Europe, and the Balkans. To investigate the climate of the area, the CARPATCLIM project members collected, quality-checked, homogenized, harmonized, and interpolated daily data for 16 meteorological variables and many derived indicators related to the period 1961-2010. The principal outcome of the project is the Climate Atlas of the Carpathian
Read moreEvaluation and archaeological potential of geophysical investigations of the Roman fort and baths in Northern Muntenia, România
The Roman fort from Sfârleanca is one of the most representative archaeological sites dating from the Roman period (2nd century A.D.) in Northern Muntenia. The existing natural and anthropic features of the environment required the application of geophysical methods in order to outline the spatial pattern of the buried remains, to define the geometry of the anthropogenic settlements and to obtain detailed information about different archaeological
Read morePredation on Rose Galls: Parasitoids and Predators Determine Gall Size through Directional Selection
Both predators and parasitoids can have significant effects on species’ life history traits, such as longevity or clutch size. In the case of gall inducers, sporadically there is evidence to suggest that both vertebrate predation and insect parasitoid attack may shape the optimal gall size. While the effects of parasitoids have been studied in detail, the influence of vertebrate predation is less well-investigated. To better understand this aspect
Read moreComparative cytogenetic analysis of radioprotector effect of two vegetal extracts
Cytogenetic study was accomplished in order to investigate the radiation impact on the embryos of Triticum aestivum L. (bread wheat). VARIAN CLINAC 2100SC radiotherapy device was used to irradiate wheat caryopses with X-ray doses of 22.4 Gy, 33.6 Gy, 44.8 Gy, 56 Gy, 67.2 Gy. Before the irradiation, wheat caryopses were let to germinate in INCUCELL room in controlled environmental conditions. Radioprotective action of ethanol extracts from Hypericum
Read moreELECTROMAGNETIC EXPOSURE INFLUENCE ON PROTEIN SYNTHESIS IN CELLULOLYTIC FUNGUS – AN ENVIRONMENTAL ISSUE
Experimental investigation focused on electromagnetic pollution influence on fungi degrading wood is presented in this paper. 970 MHz low power microwaves were used to irradiate Phanerochaete chrysosporum cells combining two exposure times and two specific absorption rates –experimentally determined by the scattering parameter method. Total protein content estimation and electrophoretic fractions assay have evidenced diminished biosynthesis with
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