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Publicatii proprii
Structural and optical characterization of thermally oxidized bismuth films
Structural and optical analysis of bismuth oxide thin films was studied. The vacuum thermal evaporation was used to prepare bismuth films onto glass substrates maintained at different temperatures. Subsequently, their thermal oxidation in air was performed for 1 and 2 hours time, respectively. The optical measurements consisted in recording the transmission and reflection spectra of the films at an UV/VIS Spectrometer. The structural characteristics
Read moreNew reinforcing technique of alumina coatings on steel substrates
Alumina protective coatings were made on steel samples by pulsed laser deposition. Improvement of the thermal shock resistance of the steel is the main purpose of such a steel coating. The adhesion of the aluminum oxide thin layer on the steel base was increased by a whole new technique. Thus, microdimensional holes were done in the coating by a pulsed Nd:YAG laser. The characteristics of the laser and the geometry of the experiment were analyzed
Read morePractical Experience in Use of the Neutron Moisture Gauges
In order to perform a continuous monitoring of the humidity of coke inside furnace, the neutron moisture gauge-NMG- is recommended. A good calibration made for the NMG leads to an increased its efficiency. We study the influence of the coke’s granulation on the NMG results. Also, a fast calibration method for NMG is proposed. Using the results of this research, the costs of the radioprotection are strongly diminished, without affecting the accuracy
Read moreApplication of stable isotopes and lipid analysis to understand trophic interactions in springtails
The combination of nitrogen and carbon isotope ratios with fatty acids (FA) analysis is a useful tool for food web studies in cryptic belowground systems. The study investigates trophic niche diferentiation of Collembola communities from the litter of two Romanian beech forests and determines the origin of posible food sources consumed by springtails using fatty acid technique. δ15N signatures of Collembola taxa in the investigated food web spanned
Read moreDetection of food in the gut content of Heteromurus nitidus (Hexapoda: Collembola) by DNA/PCR-based molecular analysis
The paper reports a feeding experiment showing that Heteromurus nitidus, a widespread and common springtail species found in a variety of habitats rich in organic matter, was capable of feeding upon nematodes in the laboratory. DNA/PCR based molecular gut analysis of Heteromurus nitidus for two nematode species, namely Phasmarhabditis hermaphodita and Steinernema feltiae, and one soil alga, Chlorococcum infusionum, was done in the laboratory using
Read moreNew species of Deuteraphorura (Collembola: Onychiuridae) from Romania
The description of two new species of the genus Deuteraphorura Absolon, 1901 from Doftana Valley, Romania is given. Deuteraphorura dianae sp. nov. has the pseudocellar formula dorsally: 32/033/33353 and ventrally: 3/011/3112. Deuteraphorura doftana sp. nov. is characterized by its dorsal (33/033/33354) and ventral 3/011/3212) pseudocellar formulae. A proposed key to the all species of Deuteraphorura from the world without pseudocelli on the thoracic
Read moreTetracanthella doftana sp. nov. (Collembola, Isotomidae) from Romania, with a key to Carpathian Tetracanthella Schött, 1891
A new species of the Tetracanthella pilosa group is described from Romanian Carpathians. T. doftana sp. nov. is similar to T. andalusiaca Deharveng, 1987. They differ by the number of sublobal hairs, size of macrochaetae and distribution. A key to Carpathian Tetracanthella Schött, 1891 species is also given.
Read moreRapid Diagnosis by Multiplex PCR Technology at Patients with Acute Respiratory Infections
PCR offer a number of potential advantages, results are available in a matter of hours rather than days, the extreme sensibility facilitates detection of even minutes the amounts of pathogen DNA in clinical samples and the test is not significantly affected by prior administration of antibiotics. Aim: The aim of this work was to rapidly identify the antibiotic resistance the monitoring of pathogen growth at the patients admitted in Hospitalization
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