The Assessment of the Insolvency Risk at the Companies From the Manufacturing Industry, Listed on the Bucharest Stock Exchange

The paper presents both theoretically and empirically the insolvency risk for 35 companies from the manufacturing industry in Romania, listed on the Bucharest Stock Exchange, at premium and standard categories, during 2007-2016, through four models: Springate, Taffler, Altman, and French Commercial Credit. The results of the research have revealed that during the period 2007- 2016, over 50% of the companies were facing a high insolvency risk, the most risky of them being Cemacon S.A. and Prefab S.A. The less risky companies during the mentioned period of time were Aerostar S.A. and Conted S.A

Electronic self-doping of Mo-states in A2FeMoO6 (A=Ca, Sr and Ba) half-metallic ferromagnets - a Nuclear Magnetic Resonance study

A systematic study of (A,A')2FeMoO6 (A,A'=Ca, Sr, Ba) ferromagnetic oxides with double perovskite structure has been performed using 95,97Mo and 57Fe NMR spectroscopy. These oxides are isoelectronic but have substantially different Curie temperatures. The NMR analysis provides clear evidence that the magnetic moment at Mo sites is not constant but varies sensitively with the ionic size of the alkaline ions. The 95,97Mo frequency, and thus the electronic charge at Mo ions, is found to be smaller in Ba and Ca than in Sr-based oxides. The charge release from Mo sites is accompanied by an uptake at Fe sites, and thus a self-doping Fe-Mo process is observed. This process is controlled by relevant structural parameters: the Fe-O-Mo bond length and bending. A clear relationship between the Curie temperature and the magnetic moment and thus electron density at Mo sites has been disclosed. The relevance of these findings for the understanding of ferromagnetic coupling in double perovskites is discussed.Comment: 26 pages, 8 figure

Fonctionnalisation de films de chitosane par « grafting from »

International audienc

Layered oxychalcogenide in the Bi–Cu–O–Se system as good thermoelectric materials

International audienc

Corrosion of titanium and zirconium under Ar irradiation in the low MeV range: an XPS and SE study

International audienc

Long range magnetic ordering in rocksalt high entropy oxides

We report the magnetic properties of Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O, a high entropy oxide with a rocksalt structure, and the influence of substitutions on these properties. From the magnetic susceptibility and neutron diffraction measurements, we found that this compound exhibits long range magnetic order below 120 amp; 8201;K despite the substantial structural disorder. Other rocksalt type high entropy oxides with various chemical substitutions were found to host either an antiferromagnetic order or spin glass state depending on the amount of magnetic ions. The presence of magnetic order for such a disordered material potentially provides a route to explore exotic magnetic properties and function

MoO42- as a soluble inhibitor for Zn in neutral and alkaline solutions.

International audienceThe inhibitive action of soluble Na2MoO4 on the spontaneous reactivity of hot dip galvanized steel in 0.5 M NaCl was studied at pH 4–13 by a direct measurement of Zn dissolution rate in the flowing electrolyte and postmortem surface analysis. The stability and the composition of Mo-rich films depended on the solution pH and flow conditions. The inhibition efficiency of soluble Mo(VI) correlated with the composition of the films: Mo(V)-rich films were immediately formed under uniform flow at pH 6–12, and the inhibition efficiency of Mo(VI) in these conditions (>92%) was comparable with the efficiency of Cr(VI)

The Assessment of the Insolvency Risk at the Companies From the Manufacturing Industry, Listed on the Bucharest Stock Exchange

Abstract: The paper presents both theoretically and empirically the insolvency risk for 35 companies from the manufacturing industry in Romania, listed on the Bucharest Stock Exchange, at premium and standard categories, during 2007-2016, through four models: Springate, Taffler, Altman, and French Commercial Credit. The results of the research have revealed that during the period 2007- 2016, over 50% of the companies were facing a high insolvency risk, the most risky of them being Cemacon S.A. and Prefab S.A. The less risky companies during the mentioned period of time were Aerostar S.A. and Conted S.A