Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Staff Login
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.
Publicatii proprii
Spectroscopic investigation of P2O5-CdO-Li2O glass system
A systematic IR, Raman and ESR study of the P2O5-CdO-Li2O glass system--a possible dosimeter material, is reported. The proportion of P2O5 remains constant at 0.5 mol% and those of CdO and Li2O are changed from 0 to 0.5 mol%. IR and Raman spectra allowed us to identify the structural units which appear in the structural network of these phosphate glasses and also the network modifier role of Cd2+ and Li+ ions. Generally, a local network structure
Read moreDesigning thermotropic liquid crystalline polyazomethines based on fluorene and/or oxadiazole chromophores
The main objective of this paper was to synthesize luminescent thermotropic liquid crystalline polyazomethines containing chromophoric mesogen, which design has been addressed to optoelectronic materials. The investigation of the thermotropic behavior by three complementary methods of analyses, i.e. polarized optical microscopy, differential scanning calorimetry and wide angle X-ray diffraction, indicated a nematic mesophase for the polymers containing
Read moreImino-chitosan biodynamers
The imine-bond formation on chitosan backbones occurs with very low yields in aqueous solutions and is significantly improved in hydrogels or in solid state films. The dynamic exchanges of imino-R groups and colour transfer can occur at the interfaces between various hydrogels and solid state films.
Read moreEffects of periodicity perturbations on the transmission by underwater phononic crystals
The effects of periodicity perturbations in underwater phononic crystal layers composed of nonin- terpenetrating rows of identical shells are investigated. The results for one row are obtained by using a multiple scattering method between shells. Then, taking into account the multiple reflections and transmissions between two adjacent rows, a Debye series method is used to calculate the reflection and transmission coefficients by a finite number
Read moreMolecular mechanisms of RET receptor-mediated oncogenesis in multiple endocrine neoplasia 2
Multiple endocrine neoplasia type 2 is an inherited cancer syndrome characterized by tumors of thyroid and adrenal tissues. Germline mutations of the REarranged during Transfection (RET) proto-oncogene, leading to its unregulated activation, are the underlying cause of this disease. Multiple endocrine neoplasia type 2 has been a model in clinical cancer genetics, demonstrating how knowledge of the genetic basis can shape the diagnosis and treatment
Read moreMechanisms of nitric oxide release from organic nitrates and nitrites: implications on the activation of soluble guanylyl cyclase and inhibition of lipid peroxidation [dissertation]
Organic nitrates and nitrites are used in cardiovascular therapy as vasodilators. They are supposedly biotransformed to nitric oxide (NO), which activates soluble guanylyl cyclase (sGC) - the enzyme responsible for their biological activity. Organic nitrites are potential intermediates in the transformation of nitrates to NO. NO appears to have both cytoprotective and cytotoxic properties. In the brain, NO might be cytoprotective by increasing the
Read moreNonculturable response of animal enteropathogens in the agricultural environment and implications for food safety
Concerns about animal enteropathogen contamination of fresh horticultural products have increased worldwide and are mainly due to the ability of bacteria to survive under stress conditions in the agricultural environment and during raw-vegetable processing. This review challenges the idea that the viable but nonculturable phenomenon that has been proven to occur in plant-associated environments contributes to human pathogen survival and might be
Read more