The BeppoSAX High Energy Large Area Survey (HELLAS) - VI. The radio properties

We present results of a complete radio follow-up obtained with the VLA and ATCA radio telescopes down to a 6 cm flux limit of about 0.3 mJy of all the 147 X-ray sources detected in the BeppoSAX HELLAS survey. We found 53 X-ray/radio likely associations, corresponding to about one third of the X-ray sample. Using the two point spectral index alpha_ro=0.35 we divided all the HELLAS X-ray sources in radio quiet and radio loud. We have 26 sources classified as radio-loud objects, corresponding to about 18% of the HELLAS sample. In agreement with previous results, the identified radio-loud sources are associated mainly with Type 1 AGNs with L(5-10 keV) > 10^44 erg/s, while all the identified Type 2 AGNs and Emission Line Galaxies are radio quiet objects with L(5-10 keV) < 10^44 erg/s. The analysis of the radio spectral index suggests that Type 1 AGNs have a mean radio spectral index flatter than Type 2 AGNs and Emission Line Galaxies.Comment: 12 pages, 5 figures, MNRAS, accepte

Time collection and storage conditions of lipid profile

The stability of samples is crucial for getting reliable concentrations of many analytes, including lipid profile. Thus, the goal of this study was to analyze lipid profile under different storage and temperature conditions. This was a prospective study with 809 patients of both genders. Total cholesterol, triglycerides, high-density lipoprotein cholesterol, low density lipoprotein cholesterol and non-high-density lipoprotein were measured within 1 h from collection at room temperature, after 2-3 h of refrigeration (8 degrees C) and after 4-5 h at room temperature. The processing time and storage conditions did not affect the analytes measured. These findings are important for multicenter studies, because of the difficulties related to centrifugation and freezing of samples immediately after collection.Univ Santo Amaro, Pos Grad Ciencias Saude, Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Setor Lipides Aterosclerose & Biol Vasc Disciplin, Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Disciplina Med Lab, Lab Cent, Sao Paulo, SP, BrazilHosp Israelita Albert Einstein, Med Diagnost Ambulatorial, Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Setor Lipides Aterosclerose & Biol Vasc Disciplin, Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Disciplina Med Lab, Lab Cent, Sao Paulo, SP, BrazilWeb of Scienc