Search results for "ESA"
showing 10 items of 11914 documents
Sites of sulfatation in the chondrocytes of the articular cartilage of the rabbit
1977
35S sulfate uptake by the articular cartilage chondrocytes, from biopsies of rabbit, have been studied by high resolution autoradiography. The Golgi apparatus, rough endoplasmic reticulum, cytosol, cytoplasmic membrane and extracellular space were considered as cell compartments in the quantitative analysis of the autoradiograms. The results obtained show: 1) a high activity of radiosotope incorporation in the Golgi apparatus; 2) a fast rhythm of transfer of the substances labelled in the Golgi apparatus to the cell membrane; 3) significant labelling of the rough endoplasmic reticulum, throughout the experiment. It is concluded: 1) The grains observed in the rough endoplasmic reticulum show…
Cartografia e uso del suolo in Sicilia tra Settecento e Novecento
2009
Principali argomenti trattati: uso del suolo, paesaggio e cartografia regionale.La settecentesca carta Schmettau: avanguardia o condanna? Sicilia luogo "centrale" della vicenda cartografica del Mezzogiorno.Garibaldi e le carte della Sicilia a 150 anni dall'Unità. Cartografia e paesaggi. Da Agatino Daidone ai Reali Offici Topografici attraverso W.H. Smyth, e le levate e carte topografiche napoletane e la carta topografica di Sicilia del 1862-68.Messina, il terremoto e gli studi di Mario Baratta editi dalla Società Geografica Italiana.Insediamento e campagne , masserie monumentali, centri rurali compatti. Paesaggi di Sicilia come sintesi del Mediterraneo.
II. Sí, decididamente no soy un hombre importante
1949
Texto recogido en un manuscrito de lo que iba a ser la primera novela de José Vidal-Beneyto, que no llegó a publicarse.
Ordinacions fetes per Pere terç, rey d'Aragó
Ms Títol obtingut de la rúbrica (f. 1r) Col·lació: Paper, f. 5 (paper) + 184 (1 f. original sense numerar) + 4 (paper) ; foliació original amb numeració romana ; reclams horitzontals als f. 14v, 28v, 48v, 72v, 98v, 138v, 170v i 128v, manquen al f. 118v, 154v i 142v ; signatures de quadern als f. 15r, 29r, 73r, 119v, 155r, 171r i 183r, manquen les corresponens als quaderns que comencen als f. 1r, 49r, 99r i 139r Composició: Escrit a línia tirada Escriptura: Gòtica cursiva. Anotacions marginals de diverses mans entre les quals es pot identificar l'autògrafa del rei Pere el Cerimoniós i la de Pere Miquel Carbonell, arxiver reial Decoració: Caplletres en blau i roig i rúbriques en tinta vermell…
La solitudine dell'Arcivescovo
2006
Il saggio è un breve ricordo dell'incontro professionale con l'arcivescovo di Monreale, Mons. Cataldo Naro, storico della chiesa e attento conoscitore del fenomeno mafioso.
THE CAUCHY DUAL AND 2-ISOMETRIC LIFTINGS OF CONCAVE OPERATORS
2018
We present some 2-isometric lifting and extension results for Hilbert space concave operators. For a special class of concave operators we study their Cauchy dual operators and discuss conditions under which these operators are subnormal. In particular, the quasinormality of compressions of such operators is studied.
A logarithmic fourth-order parabolic equation and related logarithmic Sobolev inequalities
2006
A logarithmic fourth-order parabolic equation in one space dimension with periodic boundary conditions is studied. This equation arises in the context of fluctuations of a stationary nonequilibrium interface and in the modeling of quantum semiconductor devices. The existence of global-in-time non-negative weak solutions and some regularity results are shown. Furthermore, we prove that the solution converges exponentially fast to its mean value in the ``entropy norm'' and in the Fisher information, using a new optimal logarithmic Sobolev inequality for higher derivatives. In particular, the rate is independent of the solution and the constant depends only on the initial value of the entropy.
Explicit solutions for a system of coupled Lyapunov differential matrix equations
1987
This paper is concerned with the problem of obtaining explicit expressions of solutions of a system of coupled Lyapunov matrix differential equations of the typewhere Fi, Ai(t), Bi(t), Ci(t) and Dij(t) are m×m complex matrices (members of ℂm×m), for 1≦i, j≦N, and t in the interval [a,b]. When the coefficient matrices of (1.1) are timeinvariant, Dij are scalar multiples of the identity matrix of the type Dij=dijI, where dij are real positive numbers, for 1≦i, j≦N Ci, is the transposed matrix of Bi and Fi = 0, for 1≦i≦N, the Cauchy problem (1.1) arises in control theory of continuous-time jump linear quadratic systems [9–11]. Algorithms for solving the above particular case can be found in [1…
Stellar hydrodynamics with glaister's riemann solver: An approach to the stellar collapse
1990
La resolution de Remann approximee de la solution des equations d'Euler de la dynamique des gaz 1 D, developpee par Glaister P. (1988, J. Comput. Phys., 74) est introduite dans un code hydrodynamique lagrangien et appliquee a l'effondrement stellaire a symetrie spherique
The cauchy problem for non-linear Klein-Gordon equations
1993
We consider in ℝ n+1,n≧2, the non-linear Klein-Gordon equation. We prove for such an equation that there is a neighbourhood of zero in a Hilbert space of initial conditions for which the Cauchy problem has global solutions and on which there is asymptotic completeness. The inverse of the wave operator linearizes the non-linear equation. If, moreover, the equation is manifestly Poincare covariant then the non-linear representation of the Poincare Lie algebra, associated with the non-linear Klein-Gordon equation is integrated to a non-linear representation of the Poincare group on an invariant neighbourhood of zero in the Hilbert space. This representation is linearized by the inverse of the …