Assessment of antioxidant activity of hexane and ethanolic tomato pomace extracts

In this paper antioxidant activity of hexane and ethanolic tomato pomace extracts (obtained from tomato varieties: BaCka and Saint Pierre) was investigated. The contents of phenolic compounds and flavonoids in ethanolic and lycopene and P-carotene in hexane extracts were determined spectrophotometrically. The antioxidant activity of tomato pomace extracts was determined using different tests, including reducing power and 2,2-diphenyl-l-picrylhydrazyl (DPPH) free radical scavenging assays

Black Hole Mass Estimation in Type 1 AGN: Hβ\beta vs. Mg II lines and the role of Balmer continuum

Here we investigate the H$\beta$ and Mg II spectral line parameters used for the black hole mass (M$_{\rm BH}$) estimation for a sample of Type 1 Active Galactic Nuclei (AGN) spectra selected from the Sloan Digital Sky Survey (SDSS) database. We have analyzed and compared the virialization of the H$\beta$ and Mg II emission lines, and found that the H$\beta$ line is more confident virial estimator than Mg II. We have investigated the influence of the Balmer continuum emission to the M$_{\rm BH}$ estimation from the UV parameters, and found that the Balmer continuum emission can contribute to the overestimation of the M$_{\rm BH}$ on average for ~ 5% (up to 10%).Comment: 9 pages, 3 figures, Accepted for publication in Frontiers in Astronomy and Space Science

Wells’ score for early prehospital screening of pulmonary embolism

Pulmonary embolism (PE) represents a significant health problem due to non-specific clinical features and a high risk of lethal outcome. PE diagnostics can sometimes be very difficult, especially at the prehospital level. We present a patient in whom early screening for PE at the prehospital level, performed using the Wells’ Score, was a life-saving event. Case scenario: the Emergency Medical Service (EMS) received a call regarding a male, aged 27 years, who was unconscious. Prior to losing consciousness, he complained of suffocation and tachycardia. Ten days earlier he sustained an injury to the knee which was immobilized with a splint, followed by bed rest. A year ago he was examined for chest pain, hypertension and tachycardia. On examination the patient was conscious, well oriented, eupneic, afebrile, with normal skin color. On pulmonary auscultation breath sounds were normal, and oxygen saturation was 90%. Findings on cardiac examination included: regular rate and rhythm, no murmur, blood pressure (BP) 120/85mmHg on both arms. ECG revealed sinus rhythm, rate of 100 beats/min, discreet signs of right heart strain (S1Q3T3 pattern), negative T wave from V1-V4, ST depression in D2, D3, AVF. A Wells’ score of 6 (most probably PE) was calculated: immobilization for 4 weeks – 1.5 points, tachycardia (pulse 120/min) – 1.5 points and alternative diagnosis less probable than PE – 3 points. The patient was suspected of PE and referred to a cardiologist. Conclusion. Pulmonary embolism often remains undiagnosed during a patient’s lifetime or is erroneously diagnosed. The significance of the scoring of each patient aimed at the recognition of pulmonary embolism at the prehospital level cannot be underestimated

Interplay between Physics and Geometry in Balmer filaments: the Case of SN 1006

The analysis of Balmer-dominated emission in supernova remnants is potentially a very powerful way to derive information on the shock structure, on the physical conditions of the ambient medium and on the cosmic-ray acceleration efficiency. However, the outcome of models developed in plane-parallel geometry is usually not easily comparable with the data, since they often come from regions with rather a complex geometry. We present here a general scheme to disentangle physical and geometrical effects in the data interpretation, which is especially powerful when the transition zone of the shock is spatially resolved and the spectral resolution is high enough to allow a detailed investigation of spatial changes of the line profile. We then apply this technique to re-analyze very high quality data of a region along the northwestern limb of the remnant of SN~1006. We show how some observed features, previously interpreted only in terms of spatial variations of physical quantities, naturally arise from geometrical effects. With these effects under control, we derive new constraints on physical quantities in the analyzed region, like the ambient density (in the range 0.03-$0.1{\,\rm cm^{-3}}$), the upstream neutral fraction (more likely in the range 0.01-0.1), the level of face-on surface brightness variations (with factors up to $\sim 3$) and the typical scale lengths related to such variations ($\ge 0.1{\,\rm pc}$, corresponding to angular scales $\ge 10{\,\rm arcsec}$).Comment: 22 pages, 24 figures, 3 tables, accepted on 2018 November 21 for publication on MNRA