20 research outputs found
The Impact of Forest Degradation on Rural Communities in Romania
The evolution of human society was often based on the use of naturalresources. The forest-man communion in Romania represented more than a mere cover of the basic material needs. The Romanian was always “brotherof the forest” and knew how to appreciate along the centuries the multiplequalities of the woods. As the most important part of the forest fund, the Romanianwoods are strongly affected by anthropic activities. Much more than the necessaryactivities for maintenance and regeneration, there is now the massive economicexploitation of the forest exceeding the threshold ofresponsibility and the environmental limits. The degradation of theforest fund involves higher risks of flooding, landslides, ecosystem andlandscape degradation, and in the end the total disappearance of the basic localresources. This paper pays a higher attention to floods that repeatedly affectedthe rural communities in the last decade. This type of hazard is directlydetermined by excessive logging. Flood risk management should be based onresponsible forest management limiting the deforestation at the level of ecosystem’sability to regenerate. The paper analyses the perception of rural communitymembers on forest issues. The conclusions underline the impact of the legislationand the sectoral policies on the present situation of the forests in Romania
1,3,4-Thiadiazole Derivatives. Part 91. Synthesis and Biological Activity of Metal Complexes of 5-(2-Aminoethyl)-2-Amino-1,3,4-Thiadiazole
Metal complexes of the title ligand (L) containing Co(II), Ni(II) and Cu(II) were prepared and
characterized by elemental analysis, IR, electronic spectroscopy and conductimetry. The new derivatives,
possessing the following formulae, CuL2(OH)2, NiL2Cl2, and [Co2LCl4]n showed in vitro antifungal activity
against Aspergillus and Candida spp
Разработка методики диагностирования и модели для прогнозирования состояния трубопроводов проложенных в кожухах
Разработка методики диагностирования и прогнозирования технического состояния трубопроводов, проложенных в кожухе, с целью планирования их обслуживания.Development of a technique for diagnosing and forecasting the technical condition of pipelines laid in a casing for the purpose of planning their maintenance
Synthesis, characterization, and biological activity of some complex combinations of nickel with α-ketoglutaric acid and 1-(<i>o</i>-tolyl)biguanide
Functionalized Derivatives of Benzo-Crown Ethers. Part 4. Antifungal Macrocyclic Supramolecular Complexes of Transition Metal Ions Acting as Lanosterol-14-α-Demethylase Ihibitors
Poly- and mononuclear metal complexes of 2,3,11,12-bis[4-(10-aminodecylcarbonyl)]benzo-18-
crown-6 (L) and Cu(II); Ni(II); Co(II) and Cr(III) have been synthesized and characterized by standard
physico-chemical procedures. In the newly prepared complexes the crown moiety oxygen atoms of the
macrocyclic host did not generally interact with metal ions, whereas the two amino groups of the ligand always did. Several of the newly synthesized compounds act as effective antifungal agents against
Aspergillus and Candida spp., some of them showing activities comparable to
ketoconazole, with minimum inhibitory concentrations
in the range of 0.3−0.5 μg/mL. The mechanism of antifungal action of these
coordination compounds is probably connected to an inhibition of lanosterol-14-α-demethylase, a metallo-enzyme
playing a key role in sterol biosynthesis in fungi, bacteria and eukariotes
Tris[4-(2-pyridylmethyleneamino)phenol]iron(II) bis(perchlorate)
In the title compound, [Fe(C12H10N2O)3](ClO4)2, the metal center is coordinated by six N atoms from the three bidentate chelating ligands in a distorted octahedral coordination geometry, with overall formation of the meridional (OC-6-21) isomer. Intermolecular O—H⋯O hydrogen bonds between the hydroxyl groups of the cation and the counter-anions form an infinite one-dimensional chain in the c-axis direction