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41 results on '"Angiuli L"'

1. Logarithmic Harnack inequalities for transition semigroups in Hilbert spaces

Author

Angiuli, L., Bignamini, D. A., and Ferrari, S.

Subjects
Mathematics - Probability, Mathematics - Analysis of PDEs, 60H10, 60J60
Abstract

We consider the stochastic differential equation $$ \left\{ \begin{array}{lc} dX(t)=[AX(t)+F(X(t))]dt+C^{1/2}dW(t), & t>0;\\ X(0)=x \in \mathcal{X}; \end{array}\right. $$ where $\mathcal{X}$ is a Hilbert space, $\{W(t)\}_{t\geq 0}$ is a $\mathcal{X}$-valued cylindrical Wiener process, $A, C$ are suitable operators on $\mathcal{X}$ and $F:{\rm Dom}\,(F)\subseteq \mathcal{X}\to \mathcal{X}$ is a smooth enough function. We establish a logarithmic Harnack inequality for the transition semigroup $\{P(t)\}_{t\geq 0}$ associated with the stochastic problem above, under less restrictive conditions than those considered in the literature. Some applications to these inequalities are also shown.

Published
2021
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2. Functional inequalities for some generalised Mehler semigroups

Author

Angiuli, L., Ferrari, S., and Pallara, D.

Subjects
Mathematics - Analysis of PDEs, Mathematics - Functional Analysis, 35R15, 47D07, 60J60
Abstract

We consider generalised Mehler semigroups and, assuming the existence of an associated invariant measure $\sigma$, we prove functional integral inequalities with respect to $\sigma$, such as logarithmic Sobolev and Poincar\'{e} type. Consequently, some integrability properties of exponential functions with respect to $\sigma$ are deduced.

Published
2021
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3. Generation results for vector-valued elliptic operators with unbounded coefficients in L^p spaces

Author

Angiuli, L., Lorenzi, L., Mangino, E. M., and Rhandi, A.

Subjects
Mathematics - Analysis of PDEs, 35J47, 35K45, 47D06
Abstract

We consider a class of vector-valued elliptic operators with unbounded coefficients, coupled up to the first-order, in the Lebesgue space L^p(R^d;R^m) with p in (1,\infty). Sufficient conditions to prove generation results of an analytic C_0-semigroup T(t), together with a characterization of the domain of its generator, are given. Some results related to the hypercontractivity and the ultraboundedness of the semigroup are also established.

Published
2021

4. On functions of bounded variation on convex domains in Hilbert spaces

Author

Angiuli, L., Ferrari, S., and Pallara, D.

Subjects
Mathematics - Functional Analysis, Mathematics - Analysis of PDEs, 28C20
Abstract

We study functions of bounded variation (and sets of finite perimeter) on a convex open set $\Omega\subseteq X$, $X$ being an infinite dimensional real Hilbert space. We relate the total variation of such functions, defined through an integration by parts formula, to the short-time behaviour of the semigroup associated with a perturbation of the Ornstein--Uhlenbeck operator.

Published
2020
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5. On coupled systems of Kolmogorov equations with applications to stochastic differential games

Author

Addona, D., Angiuli, L., Lorenzi, L., and Tessitore, G.

Subjects
Mathematics - Analysis of PDEs, 35K45, 35K58, 47B07, 60H10, 91A15
Abstract

We prove that a family of linear bounded evolution operators $({\bf G}(t,s))_{t\ge s\in I}$ can be associated, in the space of vector-valued bounded and continuous functions, to a class of systems of elliptic operators $\bm{\mathcal A}$ with unbounded coefficients defined in $I\times \Rd$ (where $I$ is a right-halfline or $I=\R$) all having the same principal part. We establish some continuity and representation properties of $({\bf G}(t,s))_{t \ge s\in I}$ and a sufficient condition for the evolution operator to be compact in $C_b(\Rd;\R^m)$. We prove also a uniform weighted gradient estimate and some of its more relevant consequence.

Published
2015

6. Hypercontractivity and asymptotic behaviour in nonautonomous Kolmogorov equations

Author

Angiuli, L., Lorenzi, L., and Lunardi, A.

Subjects
Mathematics - Analysis of PDEs, 35K10, 35K15, 35B40
Abstract

We consider a class of nonautonomous second order parabolic equations with unbounded coefficients defined in $I\times\R^d$, where $I$ is a right-halfline. We prove logarithmic Sobolev and Poincar\'e inequalities with respect to an associated evolution system of measures $\{\mu_t: t \in I\}$, and we deduce hypercontractivity and asymptotic behaviour results for the evolution operator $G(t,s)$.

Published
2012

8. Harnack inequalities with power p is an element of (1,+infinity) for transition semigroups in Hilbert spaces

Author

Angiuli, L, Bignamini, DA, Ferrari, S, Angiuli, L, Bignamini, Da, and Ferrari, S

Subjects
Hilbert spaces, Transition semigroups, Harnack inequalities with power p
Abstract

We consider the stochastic differential equation{dX(t) = [AX(t) + F(X(t))]dt + C-1/2 dW(t), t > 0,X(0) = x is an element of X,where X is a separable Hilbert space, {W(t)}(t >= 0) is a X-cylindrical Wiener process, A and C are suitable operators on X and F : Dom(F)subset of X -> X is a smooth enough function. We establish a Harnack inequality with power p is an element of(1,+infinity) for the transition semigroup {P(t)}(t >= 0) associated with the stochastic problem above, under less restrictive conditions than those considered in the literature. Some applications to these inequalities are shown.

Published
2023

10. On Invariant Measures Associated with Weakly Coupled Systems of Kolmogorov Equations

Author

DAVIDE ADDONA, Angiuli, L., Lorenzi, L., Addona, D, Angiuli, L, and Lorenzi, L

Subjects
invariant measures, weakly coupled elliptic system, unbounded coefficients, Applied Mathematics, 35B40, 35K45, 35K40, MAT/05 - ANALISI MATEMATICA, Analysis
Abstract

In this paper, we deal with weakly coupled elliptic systems ${\mathcal A}$ with unbounded coefficients. We prove the existence and characterize all the systems of invariant measures for the semigroup $({\bf T}(t))_{t\ge 0}$ associated with ${\mathcal A}$ in $C_b({\mathbb R^d};\mathbb R^m)$. We also show some relevant properties of the extension of $({\bf T}(t))_{t\ge 0}$ to the $L^p$-spaces related to systems of invariant measures. Finally, we study the asymptotic behaviour of $({\bf T}(t))_{t\ge 0}$ as $t$ tends to $+\infty$.

Published
2019

11. On Invariant Measures Associated with Weakly Coupled Systems of Kolmogorov Equations

Author

Addona, D, Angiuli, L, Lorenzi, L, Addona, D, Angiuli, L, and Lorenzi, L

Abstract

In this paper, we deal with weakly coupled elliptic systems A with unbounded coefficients. We prove the existence and characterize all the systems of invariant measures for the semigroup (T(t))(t >= 0) associated with A in C-b(R-d; R-m). We also show some relevant properties of the extension of (T(t))(t >= 0) to the L-P-spaces related to systems of invariant measures. Finally, we study the asymptotic behaviour of (T(t))(t >= 0) as t tends to +infinity.

Published
2019

12. Hypercontractivity, supercontractivity, ultraboundedness and stability in semilinear problems

Author

Addona, D, Angiuli, L, Lorenzi, L, Addona, D, Angiuli, L, and Lorenzi, L

Abstract

We study the Cauchy problem associated to a family of nonautonomous semilinear equations in the space of bounded and continuous functions over R d and in L p -spaces with respect to tight evolution systems of measures. Here, the linear part of the equation is a nonautonomous second-order elliptic operator with unbounded coefficients defined in I × R d , (I being a right-halfline). To the above Cauchy problem we associate a nonlinear evolution operator, which we study in detail, proving some summability improving properties. We also study the stability of the null solution to the Cauchy problem.

Published
2019

13. On coupled systems of Kolmogorov equations with applications to stochastic differential games

Author

Addona, D, Angiuli, L, Lorenzi, L, Tessitore, G, Addona, Davide, Angiuli, Luciana, Lorenzi, Luca, Tessitore, Gianmario, Addona, D, Angiuli, L, Lorenzi, L, Tessitore, G, Addona, Davide, Angiuli, Luciana, Lorenzi, Luca, and Tessitore, Gianmario

Abstract

We prove that a family of linear bounded evolution operators (G(t, s))t=sI can be associated, in the space of vector-valued bounded and continuous functions, to a class of systems of elliptic operators A with unbounded coefficients defined in I×Rd (where I is a right-halfline or I = R) all having the same principal part. We establish some continuity and representation properties of (G(t, s))t=sI and a sufficient condition for the evolution operator to be compact in Cb(Rd;Rm). We prove also a uniform weighted gradient estimate and some of its more relevant consequence.

Published
2017

14. Environmental indicators in EpiAir2 project: Air quality data for epidemiological surveillance [Indicatori ambientali nello studio EpiAir2: I dati di qualità dell'aria per la sorveglianza epidemiologica]

Author

Gandini, M., Berti, G., Cattani, G., Faustini, A., Scarinzi, C., Donato, F., Accetta, G., Angiuli, L., Caldara, S., Carreras, G., Casale, P., Di Biagio, K., Giannini, S., Iuzzolino, C., Lanzani, G., Lauriola, P., Leuci, P., Mariuz, M., Marchesi, S., Nocioni, A., Pistollato, S., Pizzi, L., Ranzi, A., Serinelli, M., Stagnaro, E., Vianello, L., Vigotti, M., Zauli-Sajani, S., Cadum, E., Alessandrini, E. R., Angelini, P., Antonelli, A., Arena, P., Assennato, G., Baccini, M., Baldacchini, F., Baldacci, S., Baldini, M., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Barbone, F., Barchielli, A., Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Biggeri, A., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Bruni, A., Calzolari, R., Canossa, E., Canova, C., Caramia, G., Casale, G., Casella, C., Casetta, A., Cernigliaro, A., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Chiusolo, M., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Girolamo, G., Togni, A., Di Leo, A., Di Lonardo, S., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Forastiere, F., Fruzzetti, R., Galassi, C., Gallo, G., Gallo, L., Ganzi, A., Garrone, E., Gatti, G., Gherardi, B., Gianicolo, E. A. L., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., La Torretta, T., Luberto, F., Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Mariottini, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Minichilli, F., Mircea, M., Morassuto, C., Nuvolone, D., Onorati, R. N. G., Padolecchia, G., Palazzi, B., Pandolfi, P., Parodi, S., Pasetti, P., Pensato, A., Piersanti, A., Piovesan, C., Pizzuti, R., Addario, S. P., Porcaro, L., Protti, M., Puppo, A., Raciti, M., Randi, G., Rosa, M., Rubini, G., Sacco, F., Santoro, M., Sarno, G., Scala, D., Scondotto, S., Selle, V., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Massimo Stafoggia, Starnino, G., Stivanello, E., Tominz, R., Troiano, F., Vercelli, M., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., and Zero, F.

Published
2013

15. Indicatori ambientali nello studio EpiAir2: i dati di qualità dell’aria per la sorveglianza epidemiologica. [Environmental indicators in EpiAir2 project: air quality data for epidemiological surveillance]

Author

Gandini, M, Berti, G, Cattani, G, Faustini, A, Scarinzi, C, DE DONATO, F, Accetta, G, Angiuli, L, Caldara, S, Carreras, G, Casale, P, DI BIAGIO, K, Giannini, S, Iuzzolino, C, Lanzani, G, Lauriola, P, Leuci, P, Mariuz, M, Marchesi, S, Nocioni, A, Pistollato, S, Pizzi, L, Ranzi, A, Serinelli, M, Stagaro, E, Vianello, L, Vigotti, Ma, ZAULI SAJANI, S, Cadum, E, GRUPPO COLLABORATIVO EPIAIR2, and Vercelli, Marina

Subjects
environmental indicators, epidemiological surveillance
Published
2013

18. Analytic semigroups generated in L1(Ω) by second order elliptic operators via duality methods.

Author

Angiuli, L., Pallara, D., and Paronetto, F.

Subjects
SEMIGROUPS (Algebra), BOUNDARY value problems, DUALITY theory (Mathematics), DIFFERENTIAL operators, SOBOLEV spaces
Abstract

Given an open domain (possibly unbounded) Ω⊂ R n, we prove that uniformly elliptic second order differential operators, under nontangential boundary conditions, generate analytic semigroups in L1(Ω). We use a duality method, and, further, give estimates of first order derivatives for the resolvent and the semigroup, through properties of the generator in Sobolev spaces of negative order. [ABSTRACT FROM AUTHOR]

Published
2010
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19. Hypercontractivity, supercontractivity, ultraboundedness and stability in semilinear problems

Author

Addona Davide, Angiuli Luciana, and Lorenzi Luca

Subjects
nonautonomous second-order elliptic operators, semilinear parabolic equations, unbounded coefficients, hypercontractivity, supercontractivity, ultraboundedness, stability, 35k58, 37l15, Analysis, QA299.6-433
Abstract

We study the Cauchy problem associated to a family of nonautonomous semilinear equations in the space of bounded and continuous functions over ℝd{\mathbb{R}^{d}} and in Lp{L^{p}}-spaces with respect to tight evolution systems of measures. Here, the linear part of the equation is a nonautonomous second-order elliptic operator with unbounded coefficients defined in I×ℝd{I\times\mathbb{R}^{d}}, (I being a right-halfline). To the above Cauchy problem we associate a nonlinear evolution operator, which we study in detail, proving some summability improving properties. We also study the stability of the null solution to the Cauchy problem.

Published
2017
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20. Air pollution and mortality in twenty-five Italian cities: Results of the EpiAir2 Project,Inquinamento atmosferico e mortalità in venticinque città Italiane: Risultati del progetto EpiAir2

Author

Alessandrini, E. R., Faustini, A., Chiusolo, M., Stafoggia, M., Gandini, M., Demaria, M., Antonelli, A., Arena, P., Biggeri, A., Canova, C., Casale, G., Cernigliaro, A., Garrone, E., Gherardi, B., Gianicolo, E. A. L., Giannini, S., Iuzzolino, C., Lauriola, P., Mariottini, M., Pasetti, P., Randi, G., Andrea Ranzi, Santoro, M., Selle, V., Serinelli, M., Stivanello, E., Tominz, R., Vigotti, M., Zauli-Sajani, S., Forastiere, F., Cadum, E., Accetta, G., Angelini, P., Angiuli, L., Assennato, G., Baccini, M., Baldacchini, F., Baldacci, S., Baldini, M., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Barbone, F., Barchielli, A., Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Berti, G., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Bruni, A., Caldara, S., Calzolari, R., Canossa, E., Caramia, G., Carreras, G., Casale, P., Casella, C., Casetta, A., Cattani, G., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Donato, F., Girolamo, G., Togni, A., Di Biagio, K., Di Leo, A., Di Lonardo, S., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Fruzzetti, R., Galassi, C., Gallo, G., Gallo, L., Ganzi, A., Gatti, G., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., La Torretta, T., Lanzani, G., Leuci, P., Luberto, F., Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Marchesi, S., Mariuz, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Minichilli, F., Mircea, M., Morassuto, C., Nocioni, A., Nuvolone, D., Nuzzi, R., Onorati, G., Padolecchia, G., Palazzi, B., Pandolfi, P., Parodi, S., Pensato, A., Piersanti, A., Piovesan, C., Pistollato, S., Pizzi, L., Pizzuti, R., Addario, S. P., Porcaro, L., Protti, M., Puppo, A., Raciti, M., Rosa, M., Rubini, G., Sacco, F., Sarno, G., Scala, D., Scarinzi, C., Scondotto, S., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Stagnaro, E., Starnino, G., Troiano, F., Vercelli, M., Vianello, L., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., and Zero, F.

21. Policies for the promotion of sustainable mobility and the reduction of traffic-related air pollution in the cities participating in the EpiAir2 project,Le politiche per la promozione della mobilità sostenibile e la riduzione dell'inquinamento atmosferico causato dal traffico veicolare nelle città partecipanti allo studio EpiAir2

Author

Di Lonardo, S., Nuvolone, D., Forastiere, F., Cadum, E., Barchielli, A., Accetta, G., Alessandrini, E. R., Angelini, P., Angiuli, L., Antonelli, A., Arena, P., Assennato, G., Baccini, M., FLAVIA BALDACCHINI, Baldacci, S., Baldini, M., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Barbone, F., Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Berti, G., Biggeri, A., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Bruni, A., Caldara, S., Calzolari, R., Canossa, E., Canova, C., Caramia, G., Carreras, G., Casale, G., Casale, P., Casella, C., Casetta, A., Cattani, G., Cernigliaro, A., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Chiusolo, M., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Donato, F., Girolamo, G., Togni, A., Di Biagio, K., Di Leo, A., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Faustini, A., Fruzzetti, R., Galassi, C., Gallo, G., Gallo, L., Gandini, M., Ganzi, A., Garrone, E., Gatti, G., Gherardi, B., Gianicolo, E. A. L., Giannini, S., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., Iuzzolino, C., La Torretta, T., Lanzani, G., Lauriola, P., Leuci, P., Luberto, F., Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Marchesi, S., Mariottini, M., Mariuz, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Minichilli, F., Mircea, M., Morassuto, C., Nocioni, A., Nuzzi, R., Onorati, G., Padolecchia, G., Palazzi, B., Pandolfi, P., Parodi, S., Pasetti, P., Pensato, A., Piersanti, A., Piovesan, C., Pistollato, S., Pizzi, L., Pizzuti, R., Addario, S. P., Porcaro, L., Protti, M., Puppo, A., Raciti, M., Randi, G., Ranzi, A., Rosa, M., Rubini, G., Sacco, F., Santoro, M., Sarno, G., Scala, D., Scarinzi, C., Scondotto, S., Selle, V., Serinelli, M., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Stafoggia, M., Stagnaro, E., Starnino, G., Stivanello, E., Tominz, R., Troiano, F., Vercelli, M., Vianello, L., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., Zauli-Sajani, S., and Zero, F.

22. Chemical characterization of PM in the Apulia Region: Local and long-range transport contributions to particulate matter

Author

Amodio, M., Andriani, E., Angiuli, L., Assennato, G., Giua, R., Intini, M., Menegotto, M., Nocioni, A., Palmisani, J., Perrone, M. R., Placentino, C. M., Tutino, M., Gennaro, G., Alessia Di Gilio, M., Amodio, E., Andriani, L., Angiuli, G., Assennato, G., De Gennaro, A., Di Gilio, R., Giua, M., Intini, M., Menegotto, A., Nocioni, J., Palmisani, Perrone, Maria Rita, C. M., Placentino, and M., Tutino

Subjects
Particulate Matter, Aerosol

23. Air pollution and urgent hospital admissions in 25 Italian cities: Results from the EpiAir2 project,Inquinamento atmosferico e ricoveri ospedalieri urgenti in 25 città Italiane: Risultati del progetto EpiAir2

Author

Scarinzi, C., Alessandrini, E. R., Chiusolo, M., Galassi, C., Baldini, M., Serinelli, M., Pandolfi, P., Bruni, A., Biggeri, A., Togni, A., Carreras, G., Casella, C., Canova, C., Randi, G., Andrea Ranzi, Morassuto, C., Cernigliaro, A., Giannini, S., Lauriola, P., Minichilli, F., Gherardi, B., Zauli-Sajani, S., Stafoggia, M., Casale, P., Gianicolo, E. A. L., Piovesan, C., Tominz, R., Porcaro, L., Cadum, E., Accetta, G., Angelini, P., Angiuli, L., Antonelli, A., Arena, P., Assennato, G., Baccini, M., Baldacchini, F., Baldacci, S., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Barbone, F., Barchielli, A., Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Berti, G., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Caldara, S., Calzolari, R., Canossa, E., Caramia, G., Casale, G., Casetta, A., Cattani, G., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Donato, F., Girolamo, G., Di Biagio, K., Di Leo, A., Di Lonardo, S., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Faustini, A., Forastiere, F., Fruzzetti, R., Gallo, G., Gallo, L., Gandini, M., Ganzi, A., Garrone, E., Gatti, G., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., Iuzzolino, C., La Torretta, T., Lanzani, G., Leuci, P., Luberto, F., Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Marchesi, S., Mariottini, M., Mariuz, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Mircea, M., Nocioni, A., Nuvolone, D., Nuzzi, R., Onorati, G., Padolecchia, G., Palazzi, B., Parodi, S., Pasetti, P., Pensato, A., Piersanti, A., Pistollato, S., Pizzi, L., Pizzuti, R., Addario, S. P., Protti, M., Puppo, A., Raciti, M., Rosa, M., Rubini, G., Sacco, F., Santoro, M., Sarno, G., Scala, D., Scondotto, S., Selle, V., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Stagnaro, E., Starnino, G., Stivanello, E., Troiano, F., Vercelli, M., Vianello, L., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., and Zero, F.

25. Air pollution and urgent hospital admissions in 25 Italian cities: Results from the EpiAir2 project | Inquinamento atmosferico e ricoveri ospedalieri urgenti in 25 città Italiane: Risultati del progetto EpiAir2

Author

Scarinzi, C., Alessandrini, E. R., Chiusolo, M., Galassi, C., Baldini, M., Serinelli, M., Pandolfi, P., Bruni, A., Biggeri, A., Togni, A., Carreras, G., Casella, C., Canova, C., Randi, G., Ranzi, A., Morassuto, C., Cernigliaro, A., Giannini, S., Lauriola, P., Minichilli, F., Gherardi, B., Zauli-Sajani, S., Stafoggia, M., Casale, P., Gianicolo, E. A. L., Piovesan, C., Tominz, R., Porcaro, L., Cadum, E., Accetta, G., Angelini, P., Angiuli, L., Antonelli, A., Arena, P., Assennato, G., Baccini, M., Baldacchini, F., Baldacci, S., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Fabio Barbone, Barchielli, A., Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Berti, G., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Caldara, S., Calzolari, R., Canossa, E., Caramia, G., Casale, G., Casetta, A., Cattani, G., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Donato, F., Girolamo, G., Di Biagio, K., Di Leo, A., Di Lonardo, S., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Faustini, A., Forastiere, F., Fruzzetti, R., Gallo, G., Gallo, L., Gandini, M., Ganzi, A., Garrone, E., Gatti, G., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., Iuzzolino, C., La Torretta, T., Lanzani, G., Leuci, P., Luberto, F., Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Marchesi, S., Mariottini, M., Mariuz, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Mircea, M., Nocioni, A., Nuvolone, D., Nuzzi, R., Onorati, G., Padolecchia, G., Palazzi, B., Parodi, S., Pasetti, P., Pensato, A., Piersanti, A., Pistollato, S., Pizzi, L., Pizzuti, R., Addario, S. P., Protti, M., Puppo, A., Raciti, M., Rosa, M., Rubini, G., Sacco, F., Santoro, M., Sarno, G., Scala, D., Scondotto, S., Selle, V., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Stagnaro, E., Starnino, G., Stivanello, E., Troiano, F., Vercelli, M., Vianello, L., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., and Zero, F.

26. Environmental indicators in EpiAir2 project: Air quality data for epidemiological surveillance,Indicatori ambientali nello studio EpiAir2: I dati di qualità dell'aria per la sorveglianza epidemiologica

Author

Gandini, M., Berti, G., Cattani, G., Faustini, A., Scarinzi, C., Donato, F., Accetta, G., Angiuli, L., Caldara, S., Carreras, G., Casale, P., Di Biagio, K., Giannini, S., Iuzzolino, C., Lanzani, G., Lauriola, P., Leuci, P., Mariuz, M., Marchesi, S., Nocioni, A., Pistollato, S., Pizzi, L., Ranzi, A., Serinelli, M., Stagnaro, E., Vianello, L., Vigotti, M., Zauli-Sajani, S., Cadum, E., Alessandrini, E. R., Angelini, P., Antonelli, A., Arena, P., Assennato, G., Baccini, M., Baldacchini, F., Baldacci, S., Baldini, M., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Barbone, F., Barchielli, A., Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Biggeri, A., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Bruni, A., Calzolari, R., Canossa, E., Canova, C., Caramia, G., Casale, G., Casella, C., Casetta, A., Cernigliaro, A., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Chiusolo, M., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Girolamo, G., Togni, A., Di Leo, A., Di Lonardo, S., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Forastiere, F., Fruzzetti, R., Galassi, C., Gallo, G., Gallo, L., Ganzi, A., Garrone, E., Gatti, G., Gherardi, B., Gianicolo, E. A. L., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., La Torretta, T., Ferdinando Luberto, Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Mariottini, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Minichilli, F., Mircea, M., Morassuto, C., Nuvolone, D., Onorati, R. N. G., Padolecchia, G., Palazzi, B., Pandolfi, P., Parodi, S., Pasetti, P., Pensato, A., Piersanti, A., Piovesan, C., Pizzuti, R., Addario, S. P., Porcaro, L., Protti, M., Puppo, A., Raciti, M., Randi, G., Rosa, M., Rubini, G., Sacco, F., Santoro, M., Sarno, G., Scala, D., Scondotto, S., Selle, V., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Stafoggia, M., Starnino, G., Stivanello, E., Tominz, R., Troiano, F., Vercelli, M., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., and Zero, F.

27. Short-term impact of air pollution among Italian cities covered by the EpiAir2 project,Impatto a breve termine dell'inquinamento dell'aria nelle città coperte dalla sorveglianza epidemiologica EpiAir2

Author

Baccini, M., Biggeri, A., Accetta, G., Alessandrini, E. R., Angelini, P., Angiuli, L., Antonelli, A., Arena, P., Assennato, G., Baldacchini, F., Baldacci, S., Baldini, M., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Barbone, F., Barchielli, A., Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Berti, G., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Bruni, A., Cadum, E., Caldara, S., Calzolari, R., Canossa, E., Canova, C., Caramia, G., Carreras, G., Casale, G., Casale, P., Casella, C., Casetta, A., Cattani, G., Cernigliaro, A., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Chiusolo, M., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Francesca K. de'Donato, Girolamo, G., Togni, A., Di Biagio, K., Di Leo, A., Di Lonardo, S., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Faustini, A., Forastiere, F., Fruzzetti, R., Galassi, C., Gallo, G., Gallo, L., Gandini, M., Ganzi, A., Garrone, E., Gatti, G., Gherardi, B., Gianicolo, E. A. L., Giannini, S., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., Iuzzolino, C., La Torretta, T., Lanzani, G., Lauriola, P., Leuci, P., Luberto, F., Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Marchesi, S., Mariottini, M., Mariuz, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Minichilli, F., Mircea, M., Morassuto, C., Nocioni, A., Nuvolone, D., Nuzzi, R., Onorati, G., Padolecchia, G., Palazzi, B., Pandolfi, P., Parodi, S., Pasetti, P., Pensato, A., Piersanti, A., Piovesan, C., Pistollato, S., Pizzi, L., Pizzuti, R., Addario, S. P., Porcaro, L., Protti, M., Puppo, A., Raciti, M., Randi, G., Ranzi, A., Rosa, M., Rubini, G., Sacco, F., Santoro, M., Sarno, G., Scala, D., Scarinzi, C., Scondotto, S., Selle, V., Serinelli, M., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Stafoggia, M., Stagnaro, E., Starnino, G., Stivanello, E., Tominz, R., Troiano, F., Vercelli, M., Vianello, L., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., Zauli-Sajani, S., and Zero, F.

28. Short-term impact of air pollution among Italian cities covered by the EpiAir2 project | Impatto a breve termine dell'inquinamento dell'aria nelle città coperte dalla sorveglianza epidemiologica EpiAir2

Author

Baccini, M., Biggeri, A., Accetta, G., Alessandrini, E. R., Angelini, P., Angiuli, L., Antonelli, A., Arena, P., Assennato, G., Baldacchini, F., Baldacci, S., Baldini, M., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Barbone, F., Barchielli, A., Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Berti, G., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Bruni, A., Cadum, E., Caldara, S., Calzolari, R., Canossa, E., Canova, C., Caramia, G., Carreras, G., Casale, G., Casale, P., Casella, C., Casetta, A., Cattani, G., Cernigliaro, A., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Chiusolo, M., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Donato, F., Girolamo, G., Togni, A., Di Biagio, K., Di Leo, A., Di Lonardo, S., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Faustini, A., Forastiere, F., Fruzzetti, R., Galassi, C., Gallo, G., Gallo, L., Gandini, M., Ganzi, A., Garrone, E., Gatti, G., Gherardi, B., Gianicolo, E. A. L., Giannini, S., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., Iuzzolino, C., La Torretta, T., Lanzani, G., Lauriola, P., Leuci, P., Luberto, F., Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Marchesi, S., Mariottini, M., Mariuz, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Fabrizio Minichilli, Mircea, M., Morassuto, C., Nocioni, A., Nuvolone, D., Nuzzi, R., Onorati, G., Padolecchia, G., Palazzi, B., Pandolfi, P., Parodi, S., Pasetti, P., Pensato, A., Piersanti, A., Piovesan, C., Pistollato, S., Pizzi, L., Pizzuti, R., Addario, S. P., Porcaro, L., Protti, M., Puppo, A., Raciti, M., Randi, G., Ranzi, A., Rosa, M., Rubini, G., Sacco, F., Santoro, M., Sarno, G., Scala, D., Scarinzi, C., Scondotto, S., Selle, V., Serinelli, M., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Stafoggia, M., Stagnaro, E., Starnino, G., Stivanello, E., Tominz, R., Troiano, F., Vercelli, M., Vianello, L., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., Zauli-Sajani, S., and Zero, F.

30. Policies for the promotion of sustainable mobility and the reduction of traffic-related air pollution in the cities participating in the EpiAir2 project | Le politiche per la promozione della mobilità sostenibile e la riduzione dell'inquinamento atmosferico causato dal traffico veicolare nelle città partecipanti allo studio EpiAir2

Author

Di Lonardo, S., Nuvolone, D., Forastiere, F., Cadum, E., Barchielli, A., Accetta, G., Alessandrini, E. R., Angelini, P., Angiuli, L., Antonelli, A., Arena, P., Assennato, G., Baccini, M., Baldacchini, F., Baldacci, S., Baldini, M., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Fabio Barbone, Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Berti, G., Biggeri, A., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Bruni, A., Caldara, S., Calzolari, R., Canossa, E., Canova, C., Caramia, G., Carreras, G., Casale, G., Casale, P., Casella, C., Casetta, A., Cattani, G., Cernigliaro, A., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Chiusolo, M., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Donato, F., Girolamo, G., Togni, A., Di Biagio, K., Di Leo, A., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Faustini, A., Fruzzetti, R., Galassi, C., Gallo, G., Gallo, L., Gandini, M., Ganzi, A., Garrone, E., Gatti, G., Gherardi, B., Gianicolo, E. A. L., Giannini, S., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., Iuzzolino, C., La Torretta, T., Lanzani, G., Lauriola, P., Leuci, P., Luberto, F., Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Marchesi, S., Mariottini, M., Mariuz, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Minichilli, F., Mircea, M., Morassuto, C., Nocioni, A., Nuzzi, R., Onorati, G., Padolecchia, G., Palazzi, B., Pandolfi, P., Parodi, S., Pasetti, P., Pensato, A., Piersanti, A., Piovesan, C., Pistollato, S., Pizzi, L., Pizzuti, R., Addario, S. P., Porcaro, L., Protti, M., Puppo, A., Raciti, M., Randi, G., Ranzi, A., Rosa, M., Rubini, G., Sacco, F., Santoro, M., Sarno, G., Scala, D., Scarinzi, C., Scondotto, S., Selle, V., Serinelli, M., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Stafoggia, M., Stagnaro, E., Starnino, G., Stivanello, E., Tominz, R., Troiano, F., Vercelli, M., Vianello, L., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., Zauli-Sajani, S., and Zero, F.

31. Air pollution and mortality in twenty-five Italian cities: Results of the EpiAir2 Project | Inquinamento atmosferico e mortalità in venticinque città Italiane: Risultati del progetto EpiAir2

Author

Alessandrini, E. R., Faustini, A., Chiusolo, M., Stafoggia, M., Gandini, M., Demaria, M., Antonelli, A., Arena, P., Biggeri, A., Canova, C., Casale, G., Cernigliaro, A., Garrone, E., Gherardi, B., Gianicolo, E. A. L., Giannini, S., Iuzzolino, C., Lauriola, P., Mariottini, M., Pasetti, P., Randi, G., Ranzi, A., Santoro, M., Selle, V., Serinelli, M., Stivanello, E., Tominz, R., Vigotti, M., Stefano Zauli Sajani, Forastiere, F., Cadum, E., Accetta, G., Angelini, P., Angiuli, L., Assennato, G., Baccini, M., Baldacchini, F., Baldacci, S., Baldini, M., Baldo, V., Ballarino, G., Balzi, D., Barban, I., Barbati, G., Barbone, F., Barchielli, A., Baroni, S., Barontini, R., Bartolacci, S., Bellodi, S., Berico, M., Berti, G., Bisanti, L., Bonfanti, M., Bonomolo, A., Bonvicini, L., Bovenzi, M., Brescianini, C., Broccoli, S., Bruni, A., Caldara, S., Calzolari, R., Canossa, E., Caramia, G., Carreras, G., Casale, P., Casella, C., Casetta, A., Cattani, G., Cerrai, S., Cervino, M., Cestari, L., Chellini, E., Ciaccia, G., Cibella, F., Cocchio, S., Crosetto, L., Cuccaro, F., Daris, F., Donato, F., Girolamo, G., Togni, A., Di Biagio, K., Di Leo, A., Di Lonardo, S., Dessì, M. P., Evangelista, A., Faccini, F., Fallani, G., Fruzzetti, R., Galassi, C., Gallo, G., Gallo, L., Ganzi, A., Gatti, G., Giua, R., Goldoni, C. A., Grechi, D., Grosa, M., Guerrini, N., Impallomeni, M., La Torretta, T., Lanzani, G., Leuci, P., Luberto, F., Lupi, A., Madonia, G., Maio, S., Malaguti, A., Mangia, C., Marchesi, S., Mariuz, M., Marotta, A., Martini, A., Menegotto, M., Merlo, F., Migliore, E., Minerba, S., Minichilli, F., Mircea, M., Morassuto, C., Nocioni, A., Nuvolone, D., Nuzzi, R., Onorati, G., Padolecchia, G., Palazzi, B., Pandolfi, P., Parodi, S., Pensato, A., Piersanti, A., Piovesan, C., Pistollato, S., Pizzi, L., Pizzuti, R., Addario, S. P., Porcaro, L., Protti, M., Puppo, A., Raciti, M., Rosa, M., Rubini, G., Sacco, F., Sarno, G., Scala, D., Scarinzi, C., Scondotto, S., Simeoni, R., Simonato, L., Simoni, M., Spagnolo, G., Stagnaro, E., Starnino, G., Troiano, F., Vercelli, M., Vianello, L., Viegi, G., Vigotti, M. A., Volta, C., Zanini, G., and Zero, F.

32. Generalized Gaussian Estimates for Elliptic Operators with Unbounded Coefficients on Domains

Author

Luciana Angiuli, Luca Lorenzi, Elisabetta Mangino, Angiuli, L., Lorenzi, L., and Mangino, E.

Subjects
Generalized Gaussian estimates, Neumann-type boundary conditions, Second-order elliptic operators, Semigroups of operators
Abstract

We consider second-order elliptic operators A in divergence form with coefficients belonging to Lloc∞(Ω), when Ω ⊆ ℝd is a sufficiently smooth (unbounded) domain. We prove that the realization of A in L2(Ω), with Neumann-type boundary conditions, generates a contractive, strongly continuous and analytic semigroup (T(t)) which has a kernel k satisfying generalized Gaussian estimates, written in terms of a distance function induced by the diffusion matrix and the potential term. Examples of operators where such a distance function is equivalent to the Euclidean one are also provided.

Published
2023

33. Generation results for vector-valued elliptic operators with unbounded coefficients in L^p spaces

Author

Luciana Angiuli, Elisabetta M. Mangino, Luca Lorenzi, Abdelaziz Rhandi, Angiuli, L., Lorenzi, L., Mangino, E. M., and Rhandi, A.

Subjects
unbounded coefficients, Class (set theory), Mathematics::Functional Analysis, Vector-valued elliptic operators, unbounded coefficients, semigroups of bounded operators, improving summability properties, Semigroup, Generator (category theory), semigroups of bounded operators, Applied Mathematics, Characterization (mathematics), Vector-valued elliptic operators, First order, Domain (mathematical analysis), Combinatorics, Improving summability propertie, Elliptic operator, Mathematics - Analysis of PDEs, 35J47, 35K45, 47D06, improving summability properties, Semigroups of bounded operator, FOS: Mathematics, Standard probability space, Unbounded coefficient, Mathematics, Analysis of PDEs (math.AP)
Abstract

We consider a class of vector-valued elliptic operators with unbounded coefficients, coupled up to the first order, in the Lebesgue space $$L^p({\mathbb {R}}^d;{\mathbb {R}}^m)$$ L p ( R d ; R m ) with $$p \in (1,\infty )$$ p ∈ ( 1 , ∞ ) . Sufficient conditions to prove generation results of an analytic $$C_0$$ C 0 -semigroup $${\varvec{T}}(t)$$ T ( t ) , together with a characterization of the domain of its generator, are given. Some results related to the hypercontractivity and the ultraboundedness of the semigroup are also established.

Published
2021
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34. On coupled systems of PDEs with unbounded coefficients

Author

Luciana Angiuli, Luca Lorenzi, Angiuli, L., and Lorenzi, L.

Subjects
Physics, Evolution operator, Applied Mathematics, Operator (physics), 010102 general mathematics, Evolution systems of invariant measure, Unbounded coefficients, Space (mathematics), Physics::Classical Physics, 01 natural sciences, Invariant subspace, Combinatorics, Elliptic operator, Compact space, Mathematics - Analysis of PDEs, Bounded function, Nonautonomous parabolic system, Physics::Space Physics, FOS: Mathematics, Initial value problem, Uniqueness, 0101 mathematics, Compactne, Analysis, Analysis of PDEs (math.AP)
Abstract

We study the Cauchy problem associated to parabolic systems of the form $D_t\boldsymbol{u}=\boldsymbol{\mathcal A}(t)\boldsymbol u$ in $C_b(\mathbb{R}^d;\mathbb{R}^m)$, the space of continuous and bounded functions $\boldsymbol{f}:\mathbb{R}^d\to\mathbb{R}^m$. Here $\boldsymbol{\mathcal A}(t)$ is a weakly coupled elliptic operator acting on vector-valued functions, having diffusion and drift coefficients which change from equation to equation. We prove existence and uniqueness of the evolution operator $\boldsymbol{G}(t,s)$ which governs the problem in $C_b(\mathbb{R}^d;\mathbb{R}^m)$ proving its positivity. The compactness of $\boldsymbol{G}(t,s)$ in $C_b(\mathbb{R}^d;\mathbb{R}^m)$ and some of its consequences are also studied. Finally, we extend the evolution operator $\boldsymbol{G}(t,s)$ to the $L^p$- spaces related to the so called "evolution system of measures" and we provide conditions for the compactness of $\boldsymbol{G}(t,s)$ in this setting.

Published
2018

36. On coupled systems of Kolmogorov equations with applications to stochastic differential games

Author

Gianmario Tessitore, Luciana Angiuli, Davide Addona, Luca Lorenzi, Addona, D, Angiuli, L, Lorenzi, L, Tessitore, G, Addona, Davide, Angiuli, Luciana, Lorenzi, Luca, and Tessitore, Gianmario

Subjects
Discrete mathematics, Control and Optimization, 010102 general mathematics, Space (mathematics), 01 natural sciences, 010101 applied mathematics, Computational Mathematics, Elliptic operator, Operator (computer programming), Compact space, Mathematics - Analysis of PDEs, MAT/06 - PROBABILITA E STATISTICA MATEMATICA, Control and Systems Engineering, Kolmogorov equations (Markov jump process), Bounded function, FOS: Mathematics, Principal part, Regularity of semigroups, Stochastic Games BSDEs, Compactness Evolution operators, Gradient estimates, Nonautonomous parabolic systems, Semilinear systems, Stochastic games, Unbounded coefficients, 0101 mathematics, Differential (infinitesimal), Mathematics, Analysis of PDEs (math.AP), 35K45, 35K58, 47B07, 60H10, 91A15
Abstract

We prove that a family of linear bounded evolution operators $({\bf G}(t,s))_{t\ge s\in I}$ can be associated, in the space of vector-valued bounded and continuous functions, to a class of systems of elliptic operators $\bm{\mathcal A}$ with unbounded coefficients defined in $I\times \Rd$ (where $I$ is a right-halfline or $I=\R$) all having the same principal part. We establish some continuity and representation properties of $({\bf G}(t,s))_{t \ge s\in I}$ and a sufficient condition for the evolution operator to be compact in $C_b(\Rd;\R^m)$. We prove also a uniform weighted gradient estimate and some of its more relevant consequence.

Published
2017

37. Hypercontractivity, supercontractivity, ultraboundedness and stability in semilinear problems

Author

Luciana Angiuli, Luca Lorenzi, Davide Addona, Addona, D, Angiuli, L, Lorenzi, L, Addona, Davide, Angiuli, Luciana, and Lorenzi, Luca

Subjects
unbounded coefficients, 35K58, 37L15, Mathematics::Analysis of PDEs, Space (mathematics), 01 natural sciences, Stability (probability), Mathematics - Analysis of PDEs, 37l15, 35k58, nonautonomous second-order elliptic operators, FOS: Mathematics, Initial value problem, Applied mathematics, Null solution, unbounded coefficient, Nonautonomous second-order elliptic operator, 0101 mathematics, MAT/05 - ANALISI MATEMATICA, hypercontractivity, Mathematics, Cauchy problem, QA299.6-433, Operator (physics), ultraboundedne, 010102 general mathematics, semilinear parabolic equations, stability, 010101 applied mathematics, Elliptic operator, ultraboundedness, supercontractivity, Bounded function, semilinear parabolic equation, Analysis, Analysis of PDEs (math.AP)
Abstract

We study the Cauchy problem associated to a family of nonautonomous semilinear equations in the space of bounded and continuous functions over ℝ d {\mathbb{R}^{d}} and in L p {L^{p}} -spaces with respect to tight evolution systems of measures. Here, the linear part of the equation is a nonautonomous second-order elliptic operator with unbounded coefficients defined in I × ℝ d {I\times\mathbb{R}^{d}} , (I being a right-halfline). To the above Cauchy problem we associate a nonlinear evolution operator, which we study in detail, proving some summability improving properties. We also study the stability of the null solution to the Cauchy problem.

Published
2016

38. Patterns and trends of atmospheric mercury in the GMOS network: Insights based on a decade of measurements.

Author

Bencardino M, D'Amore F, Angot H, Angiuli L, Bertrand Y, Cairns W, Diéguez MC, Dommergue A, Ebinghaus R, Esposito G, Komínková K, Labuschagne C, Mannarino V, Martin L, Martino M, Neves LM, Mashyanov N, Magand O, Nelson P, Norstrom C, Read K, Sholupov S, Skov H, Tassone A, Vítková G, Cinnirella S, Sprovieri F, and Pirrone N

Subjects
Air Pollution statistics & numerical data, Mercury analysis, Environmental Monitoring methods, Air Pollutants analysis, Atmosphere chemistry
Abstract

The Global Mercury Observation System (GMOS) network, initially a five-year project (2010-2015) funded by the European Commission, continued as a GEO Flagship program to support the Global Observation System for Mercury (GOS4M). GMOS was envisioned as a coordinated global observing system to monitor atmospheric mercury (Hg) on a global scale, to support and evaluate the effective implementation of the Minamata Convention on Mercury (MCM). Twenty-eight ground-based stations have participated in monitoring activities, following GMOS sampling protocols and related data quality control management. The GMOS network provides representative coverage of all latitudes, from the Northern Hemisphere to the Southern Hemisphere including the Arctic Circle, Antarctica, and the Tropical Zone. This work presents atmospheric Hg data, available as Total Gaseous Mercury (TGM) or Gaseous Elemental Mercury (GEM) concentrations, recorded within the GMOS network from 2011 to 2020. TGM/GEM concentrations were analysed in terms of their variability along latitudinal areas, considering their comparability, temporal trends and patterns. The main results confirmed a clear gradient of TGM/GEM concentrations between the northern (1.58 ± 0.31 ng/m 3 ) and southern (0.97 ± 0.14 ng/m 3 ) hemispheres. Decreasing trends in TGM/GEM levels were found to be strongly significant only for selected remote stations with at least 5 years of data coverage. Seasonality in atmospheric TGM/GEM concentrations was observed to increase with latitude and is greater at inland sites than at coastal sites., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Published
2024
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39. First atmospheric mercury measurements at a coastal site in the Apulia region: seasonal variability and source analysis.

Author

Martino M, Tassone A, Angiuli L, Naccarato A, Dambruoso PR, Mazzone F, Trizio L, Leonardi C, Petracchini F, Sprovieri F, Pirrone N, D'Amore F, and Bencardino M

Subjects
Coal analysis, Environmental Monitoring, Seasons, Soil, Air Pollutants analysis, Mercury analysis
Abstract

In the framework of the Italian Special Network for Mercury (ISNM) "Reti Speciali", a sampling campaign to monitor atmospheric mercury (Hg) was carried out at Monte Sant'Angelo (MSA). This is a coastal monitoring station in the Apulia region, representative of the Southern Adriatic area, within the Mediterranean basin. This work presents continuous Gaseous Elemental Mercury (GEM) measurements over about three years at MSA, using the Lumex RA-915AM mercury analyzer. The aim was to obtain a dataset suitable for the analysis of Hg concentrations in terms of source and transport variation. Diurnal cycles of GEM were evaluated to observe the influence of local atmospheric temperature and wind speed on potential re-emissions from surrounding sea and soil surfaces. Data were also analyzed in terms of long-range transport, using backward trajectory cluster analysis. The spatial distribution of potential sources, contributing to higher measured GEM values, was obtained employing Potential Source Contribution Function (PSCF) statistics. The influence of major Hg anthropogenic point sources, such as mining activities and coal-fuel power plants, both regionally and continentally, from mainland Europe, was observed. The role of the vegetation GEM uptake in modulating the seasonal GEM variability was also investigated. The potential of wildfire influence over the highest detected GEM levels was further examined using active fire data and the evaluation of the vegetation dryness index during the selected episodes., (© 2022. The Author(s).)

Published
2022
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40. Health, Transport and the Environment: The Impacts of the COVID-19 Lockdown on Air Pollution.

Author

De Maria L, Caputi A, Tafuri S, Cannone ESS, Sponselli S, Delfino MC, Pipoli A, Bruno V, Angiuli L, Mucci N, Ledda C, and Vimercati L

Subjects
Cities, Communicable Disease Control, Environmental Monitoring, Humans, Italy epidemiology, SARS-CoV-2, Air Pollutants adverse effects, Air Pollution adverse effects, COVID-19
Abstract

Lockdown measures were initiated in Italy on March 9th after the start of the SARS-CoV-2 epidemic to flatten the epidemic curve. The aim of the present study was to assess the impact of restrictive measures in the Apulia Region, southern Italy, on air quality from March to April 2020. We applied a dual-track approach. We assessed citizen mobility and vehicle traffic with mobility network data and information obtained from satellite tracking, and we evaluated and compared pollutant concentration data as measured by monitoring stations maintained by the Regional Agency for Environmental Protection and Prevention of Apulia (ARPA). The results showed a decrease in the weekly mean NO 2 concentration recorded by urban traffic stations during the lockdown period. In particular, in the city of Bari, the average NO 2 concentration decreased from 62.2 μg/m 3 in March 2019 to 48.2 μg/m 3 in March 2020. Regarding PM10 levels, the average concentrations at the individual traffic stations showed no particular variation compared to those in the same months of the previous year, except for Bari-Caldarola Station in March 2019/2020 ( p -value < 0.001) and in April 2019/2020 ( p -value = 0.04). In particular the average in March 2019 was ~26.9 μg/m 3 , while that in March 2020 was ~22.9 μg/m 3 . For April, the average concentration of PM10 in 2019 was 27.9 μg/m 3 , while in 2020, the average was ~22.4 μg/m 3 . This can be explained by the fact that PM10 levels are influenced by multiple variables such as weather and climate conditions and desert dust advections., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 De Maria, Caputi, Tafuri, Cannone, Sponselli, Delfino, Pipoli, Bruno, Angiuli, Mucci, Ledda and Vimercati.)

Published
2021
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41. [Environmental indicators in EpiAir2 project: air quality data for epidemiological surveillance].

Author

Gandini M, Berti G, Cattani G, Faustini A, Scarinzi C, De'donato F, Accetta G, Angiuli L, Caldara S, Carreras G, Casale P, Di Biagio K, Giannini S, Iuzzolino C, Lanzani G, Lauriola P, Leuci P, Mariuz M, Marchesi S, Nocioni A, Pistollato S, Pizzi L, Ranzi A, Serinelli M, Stagaro E, Vianello L, Vigotti MA, Zauli-Sajani S, Cadum E, and Faustini A

Subjects
Air Pollutants analysis, Humans, Italy, Nitrogen Dioxide analysis, Ozone analysis, Particulate Matter analysis, Urban Health, Air Pollution analysis, Environmental Monitoring, Epidemiological Monitoring
Abstract

Objective: construction of environmental indicators of air pollution suitable for epidemiological surveillance in 25 Italian cities for EpiAir2 project (2006-2010) and presentation of the results from a 10 years of surveillance system (2001-2010) in 10 Italian cities., Design: data on particulate matter (PM10 and its fine fraction PM2.5), nitrogen dioxide (NO2), and ozone (O3), measured in the 2006-2010 calendar period, were collected. Meteorological data needed to estimate unbiased measures of the effect of pollutants are: temperature, relative humidity (estimated "apparent temperature"), and barometric pressure. In continuity with the previous EpiAir project, the same criteria for the selection of monitoring stations were applied and standard methods to estimate daily environmental indicators were used. Furthermore, it was checked the adequacy of the selected data to represent the population exposure., Setting and Participants: EpiAir2 project, relative to the period 2006-2010, involves the cities of Milano, Mestre-Venezia, Torino, Bologna, Firenze, Pisa, Roma, Taranto, Cagliari, and Palermo, already included in the previous study. The city of Treviso, Trieste, Padova, Rovigo, Piacenza, Parma, Ferrara, Reggio Emilia, Modena, Genova, Rimini, Ancona, Bari, Brindisi, and Napoli are added to the previous group., Results: particulate matter concentrations have decreased in most cities during the study period, while concentrations of NO2 and ozone do not show a similar clear trend. The analysis of the trend showed annual mean values of PM10 higher than 40 µg/m(3) in some areas of the Po Valley, and annual mean values of NO2 higher than 40 µg/m(3) in the cities of Trieste, Milano, Padova, Torino, Modena, Bologna, Roma, and Napoli., Conclusion: the enlargement of the EpiAir project to 13 other cities has highlighted critical issues related to the different geographical areas under study. Results of EpiAir2 project point out the need of a monitoring system of air pollution concentrations in both urban and industrial sites, in order to obtain reliable estimates of exposure for resident populations and to evaluate the related time trend.

Published
2013

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