Inscriere cercetatori

Premii Ad Astra

premii Ad Astra

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.

Asociatia Ad Astra a cercetatorilor romani lanseaza BAZA DE DATE A CERCETATORILOR ROMANI DIN DIASPORA. Scopul acestei baze de date este aceea de a stimula colaborarea dintre cercetatorii romani de peste hotare dar si cu cercetatorii din Romania. Cercetatorii care doresc sa fie nominalizati in aceasta baza de date sunt rugati sa trimita un email la cristian.presura@gmail.com

Publicatii proprii

Holocene variability in the range distribution and abundance of Pinus, Picea abies, and Quercus in Romania; implications for their current status

This paper examines fourteen fossil pollen datasets from Romania. It aims to investigate the temporal and spatial variability in the range distribution and abundance of three forest taxa, Pinus, Picea abies, and Quercus, during the Holocene. This is essential for understanding their current status in the forests of Eastern Europe, the conditions under which they arose, and the timing and processes responsible for their variability. Results from this

Read more
Holocene vegetation history in the upper forest belt of the Eastern Romanian Carpathians

Pollen analysis supported by nine AMS 14C dates from the Poiana ªtiol peat sequence (1540 m), in the Rodnei Mountains, Eastern Romanian Carpathians (Romania) is used to reconstruct the Holocene vegetation history in this mountain region. The results are then compared with other sequences from Romania and Eastern Europe in order to better understand the past dynamics of the main forest constituents. The vegetation record at Poiana ªtiol starts at

Read more
New reptile fossil records from Corund (Eastern Transylvania, Romania) and their paleoenvironmental significance

The carbonate deposit, located in Corund (Romania) area is well-known by the 19th century, because of the spectacular, colored carbonates found in three outcrops. The reptile fossils found in these carbonates are unique, not only because these are first occurrences for the studied area, but also because such type of reptile fossils were not described in the literature related to Europe Pleistocene – Quaternary reptile fauna. The identification

Read more
Late Holocene paleoenvironments and human impact in Fãgãraş Depression (Southern Transylvania, Romania)

A 4800-year-long sequence of environmental change during the Late Holocene has been reconstructed for southern Transylvania (Romania). The research design used palynological methods to reconstruct vegetation history and human impact in the region. We present here the results of pollen analysis of one sequence of about 11.90 m length, originating from a peat bog near Avrig (113 pollen spectra). The vegetation record, which is supported by four 14C

Read more
Postglacial patterns in trees diversity and distribution in Romania: homogenization or differentiation?

This paper examines eight fossil pollen datasets from Romania with the aim of exploring regional and elevational patterns in site similarity throughout the Holocene. In particular, we aim to determine whether there are clear intervals of homogenization /differentiation and to ascertain the potential driving factors. We found strong variability in the past vegetation dynamics during the Holocene. Bray-Curtis similarity analyses show large fluctuations

Read more
Ribosomal DNA in the Grasshopper Podisma pedestris: Escape from Concerted Evolution
Closedness of the solution map for parametric weak vector equilibrium problems
Ferromagnetic Resonance on Ni nanowire arrays

Ferromagnetic resonance investigations on Ni nanowires are reported. The angular dependence of the resonance line position is analyzed within a thermodynamic approach that includes shape anisotropy (ellipsoids of revolution), magnetocrystalline anisotropies (cubic and uniaxial), and dipole–dipole interactions. The results are supported by hysteresis loops, obtained on the same sample.

Read more
Evolution and taxonomy of the wild species of the genus Ovis (Mammalia, Artiodactyla, Bovidae)
Evolutionary history and taxonomy of a short-horned grasshopper family: The Melanoplinae (Orthoptera: Acrididae)