We investigated the role of passive volcanic plume Mount Etna (Italy) in formation new particles size range 2.5–10 nm through gas-to-particle nucleation sulfuric acid (H2SO4) precursors, formed from oxidation SO2, and their evolution to with diameters larger than 100 nm. Two simulations were performed using Weather Research Forecasting Model coupled chemistry (WRF-Chem) under same configuration...

The heart sound signal recorded from normal adults usually contains two distinct tones S1 and S2 that occur in each heartbeat. Their respective and relative time latencies are important parameters for the monitoring of cardiac functions, diagnosis, and improved treatment. In this paper, we propose a method to locate S1 and S2 heart sound features effectively using a multi-scale wavelet transfor...

We determine all tight Lagrangian surfaces in S2×S2. In particular, globally tight Lagrangian surfaces in S2 × S2 are nothing but real forms.

A class of algebras is introduced that includes the unital Banach algebras over the complex numbers. Commutator results are proved for such algebras and used to establish spectral properties of certain elements of Banach algebras. 1. Introduction. In this note, we introduce a condition on an algebra motivated by the situation in which Schur's lemma [S1] is applicable. We say that algebras satis...