323,368 research outputs found
GLT-1 up-regulation impairs prepulse inhibition of the startle reflex in adult rats
No full textMELONE M. and BELLESI M: co-first autho
Irrigazione e pacciamatura in coltura di melone: I analisi ecofisiologica.
No full textLa ricerca ha considerato l’effetto della tecnica della pacciamatura associata all’applicazione di un stress idrico controllato sull’efficienza nell’uso dell’acqua e sul comportamento ecofisiologico del melone. Il melone, pacciamato e non, è stato sottoposto a tre regimi irrigui: testimone non irrigato, irrigazioni di soccorso nelle fenofasi critiche e totale reintegro del consumo idrico. Periodicamente sono stati prelevati campioni di piante per studiare la dinamica dell’accrescimento della coltura e, per caratterizzare la risposta ecofisiologica sono state effettuate misure di scambi gassosi e di potenziale idrico fogliare durante il ciclo colturale e nell’intero arco giornaliero. La pacciamatura ha comportato un notevole incremento nell’efficienza dell’uso dell’acqua, nel tasso di crescita e assimilativo ed un migliore stato idrico dei tessuti. Dall’analisi dei parametri ecofisiologici il melone risulta una specie a comportamento isoidrico; nonostante la cucurbitacea tollera prolungati periodi di carenza idrica, si consiglia una programmazione irrigua con turni irrigui stretti al fine di mantenere elevato il livello di umidità del suolo
Maria Domenica Melone, Lo Spirito Santo nel Trinitate di Riccardo di S. Vittore. 2001
No full textCounet Jean-Michel. Maria Domenica Melone, Lo Spirito Santo nel Trinitate di Riccardo di S. Vittore. 2001. In: Revue théologique de Louvain, 38ᵉ année, fasc. 3, 2007. pp. 415-416
Maria Domenica Melone, Lo Spirito Santo nel Trinitate di Riccardo di S. Vittore. 2001
No full textCounet Jean-Michel. Maria Domenica Melone, Lo Spirito Santo nel Trinitate di Riccardo di S. Vittore. 2001. In: Revue théologique de Louvain, 38ᵉ année, fasc. 3, 2007. pp. 415-416
{1,2}-semi-affine planar spaces.
No full textLet (S,L) be a finite linear space, that is, a finite set S whose elements we call points, and L a family of parts in S, whose elements we call lines, such that any line has at least two points, two distinct points are contained in just one line and |L|≥2. A subspace in (S,L) is a subset S′ in S such that for any X,Y∈S′, X≠Y, the line joining them belongs to S′. Suppose a family P of subspaces in (S,L) exists such that |P|≥2, every π∈P contains three noncollinear points and through three noncollinear points there is only one element of P. The triple (S,L,P) is called a planar space; the elements of P are called planes. Let (X,l) be a pair consisting of a point X∈S and a line l∈L with X∉l; let π(X,l) be the number of lines on X not meeting l and let H:={π(X,l):X∈S, l∈L, X∉l}. (S,L) is also called an H-semiaffine plane. Let n+1 be the maximum number of lines on a point; then the integer n is called the order of (S,L,P). In this paper the following result is proved: Let (S,L,P) be a finite planar space such that every plane of P is a {1,2}-semiaffine plane of order ≥5 and n+1 is the number of planes through every line of L. Then (S,L,P) is one of the following examples:(a) PG(3,n)∖π; (b) PG(3,n)∖{π∪X}, with X∉π; (c) PG(3,n)∖{π∪l}, with l⊄π; (d) PG(3,n)∖{π∪π′}, where X, l, π are a point, a line, and a plane of PG(3,n), respectively, and π′ is a plane of PG(3,n) different from π
N-Hydroxyphthalimide (NHPI)-Organocatalyzed Aerobic Oxidations: Advantages, Limits, and Industrial Perspectives
No full textN-Hydroxyphthalimide (NHPI) is an efficient organocatalyst, capable of promoting
free-radical processes via hydrogen atom transfer (HAT) reactions.
The first catalytic use of NHPI was reported in 1977 by Grochowski and coworkers
for the addition of ethers to diethyl azodicarboxylate and the oxidation of
2-propanol to acetone [1]....
A characteristic property of the Grassmann manifold representing the lines of a projective space.
No full textThis paper is devoted to a characterization of the Grassmannian geometry of a projective space. The following result is proved: Let (P,L) be a partial linear space which is not linear and whose lines are not maximal singular subspaces. Suppose (P,L) has a covering Σ by maximal singular subspaces such that, for each S∈Σ and each pP−S , (1) the set of points of S collinear with p is a line L , (2) every element T of Σ through p intersects S in a unique point, and (3) each point of L belongs to an element of Σ through p . Then (P,L) is isomorphic to the Grassmannian space of a projective space.
As a corollary, the authors extend to infinite spaces a characterization of Grassmannian spaces considered as Γ -spaces, which has been established by P. M. Lo Re and Olanda in the finite cas
Plasma membrane transporters GAT-1 and GAT-3 contribute to heterogeneity of GABAergic synapses in neocortex.
No full textDynamical diffraction of guided electromagnetic waves by two-dimensional periodic dielectric gratings
No full textThe properties connected to the propagation of electromagnetic waves in rectangular waveguides loaded by periodic dielectric gratings have been treated by extending the theory of dynamical scattering by perfect atomic crystals. The theoretical formulation has been developed for the TE10 excitation of the periodic load, but it remains valid in the same form when a TE(n0) (n > 1) excitation takes place. The analysis was first developed for two-dimensional periodicities, and later the results were applied to one-dimensional periodicities without modifications to the formalism. The generalization of Bragg's law to guided propagation has been obtained, and the conditions and limits of applicability of the theory have been discussed. It has been shown that, when a small permittivity contrast between supporting and loaded material is present, the electromagnetic field can be approximated by either one or two waves only. The expressions of the electromagnetic field supported by the periodic medium and the dispersion relaion have been obtained. The diffraction pattern, the deviation from the generalized Bragg law, the width of the total reflection range, and the extinction length have been evaluated for a regular array of cylindrical holes on a polyethylene support. We have reported the results of an experiment carried out to verify the accuracy of the theory. The comparison between theoretical and experimental results has shown excellent agreement
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