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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
Structural mutations in the commercial activity
The evolution of commercial activity was characterized by profound mutations of this period generated by dynamic movements that join economic sector. These modifications of structure in trade field will determine an increased degree of flexibility for foreign trade companies and for their capacity to adapt at internal and external environment.
Read moreA sufficient condition for the connectedness of the attractors of infinite iterated function systems
Characteristic fragmentation patterns of some 4-(phenylazo)phenols obtained by electron impact mass spectrometry
The mass spectra of fourteen substituted 4-(phenylazo)phenols have been recorded and compared. The most intense peaks have been used to characterize these spectra. The molecular ions are observed as highest intensity peaks. The influence of the substituents on the fragmentation is discussed.
Read moreThe applicability of fuzzy theory in remote sensing image classification
The evolution of GIS led to the necessity of faster and better results. The processing time was reduced by using more and more advanced and applied mathematical and computer science knowledge. One of these mathematical theories is fuzzy logic. The fuzzy logic theory gives the possibility of enhancing spatial data management with the modeling of uncertainty. The usage of fuzzy theory has also applicability in processing remote sensing data. In this
Read more1. Aspects Regarding Alloying Effect on Electrochemical Stability of Sintered Titanium
The titanium alloys Ti6Al4V, Ti5Al2.5Fe and Ti6Al7Nb sintered in high vacuum, about 10-3 Pa, at 1300oC, of element powders with 200μm grain size presents spontaneous passivation in Ringer solution and submicron corrosion rate, higher electrochemical stability properties than sintered pure titanium. Titanium alloying improves the sintering quality, achieving thus a reduction of the material porosity by 10 ÷ 20% and a corresponding increase in mechanical
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