The cosmic neutrino background (CNB) is a definite prediction of the standard cosmological model and its direct discovery would represent milestone in cosmology physics. In this work, we consider capture relic neutrinos on tritium target as possible way to detect CNB, aimed for by PTOLEMY project. Crucial parameters measurement are absolute mass ${m}_{\ensuremath{\nu}}$ local number density ${n...

most of the contour detection methods suffers from some drawbacks such as noise, occlusion of objects, shifting, scaling and rotation of objects in image which they suppress the recognition accuracy. to solve the problem, this paper utilizes zernike moment (zm) and pseudo zernike moment (pzm) to extract object contour features in all situations such as rotation, scaling and shifting of object i...

the anthocyanins of the fruit skin of iranian forest pear (sange khouj) were separated, identified and quantified using high-performance liquid chromatography/diode array detection (hplc/dad) and hplc/electrospray ionization /mass spectrometry (hplc/esi /ms). the individual anthocyanins were identified by comparing their mass spectral data and retention times with those of standards and publish...

Background and aims: A selective and sensitive high performance liquid chromatography-electrospray ionization mass spectrometry method has been established for determination of methotrexate in human plasma. Methods: Methotrexate was extracted from plasma with acetonitrile. The mobile phase consisted of acetonitrile-water-formic acid 74: 25: 1(v/v). Twenty...