The variation of the energy for a gravitational system is directly defined from the Hamiltonian field equations of General Relativity. When the variation of the energy is written in a covariant form...
Charges and Energy in Chern-Simons Theories and Lovelock Gravity (2003)
Allemandi, G., Francaviglia, M., Raiteri, M.
Starting from the SO(2,2n) Chern-Simons form in (2n+1) dimensions we calculate the variation of conserved quantities in Lovelock gravity and Lovelock-Maxwell gravity through the covariant formalism...
Ferraris, M., Francaviglia, M., Raiteri, M.
We present an alternative field theoretical approach to the definition of conserved quantities, based directly on the field equations content of a Lagrangian theory (in the standard framework of the...
Covariant Charges in Chern-Simons AdS_3 Gravity (2002)
Allemandi, G., Francaviglia, M., Raiteri, M.
We try to give hereafter an answer to some open questions about the definition of conserved quantities in Chern-Simons theory, with particular reference to Chern-Simons AdS_3 Gravity. Our attention...
The First Law of Isolated Horizons via Noether Theorem (2001)
Allemandi, G., Francaviglia, M., Raiteri, M.
A general recipe proposed elsewhere to define, via Noether theorem, the variation of energy for a natural field theory is applied to Einstein-Maxwell theory. The electromagnetic field is analysed in...
Hamiltonian, Energy and Entropy in General Relativity with Non-Orthogonal Boundaries (2001)
A general recipe to define, via Noether theorem, the Hamiltonian in any natural field theory is suggested. It is based on a Regge-Teitelboim-like approach applied to the variation of Noether...
Energy for N-Body Motion in Two Dimensional Gravity (2000)
Mann, R. B., Potvin, G., Raiteri, M.
A general definition of energy is given, via the N\"other theorem, for the N-body problem in (1+1) dimensional gravity. Within a first-order Lagrangian framework, the density of energy of a solution...
Noether Charges, Brown-York Quasilocal Energy and Related Topics (2000)
Fatibene, L., Ferraris, M., Francaviglia, M., Raiteri, M.
The Lagrangian proposed by York et al. and the covariant first order Lagrangian for General Relativity are introduced to deal with the (vacuum) gravitational field on a reference background. The two...
The Entropy of Taub-Bolt Solution (1999)
Fatibene, L., Ferraris, M., Francaviglia, M., Raiteri, M.
A geometrical framework for the definition of entropy in General Relativity via Noether theorem is briefly recalled and the entropy of Taub-Bolt Euclidean solutions of Einstein equations is then...
Fatibene, L., Ferraris, M., Francaviglia, M., Raiteri, M.
The BTZ stationary black hole solution is considered and its mass and angular momentum are calculated by means of Noether theorem. In particular, relative conserved quantities with respect to a...
Remarks on Conserved Quantities and Entropy of BTZ Black Hole Solutions. Part II: BCEA Theory (1999)
Fatibene, L., Ferraris, M., Francaviglia, M., Raiteri, M.
The BTZ black hole solution for (2+1)-spacetime is considered as a solution of a triad-affine theory (BCEA) in which topological matter is introduced to replace the cosmological constant in the...
Ectocellular in vitro and in vivo metabolism of cADP-ribose in cerebellum.
De Flora, A, Guida, L, Franco, L, Zocchi, E, Pestarino, M, Usai, C, ...
CD38, a type II transmembrane glycoprotein predominantly expressed in blood cells, is a bifunctional ectoenzyme directly involved in the metabolism of cADP-ribose (cADPR). This is a potent Ca2+...
Ectocellular in vitro and in vivo metabolism of cADP-ribose in cerebellum.
De Flora, A, Guida, L, Franco, L, Zocchi, E, Pestarino, M, Usai, C, ...
CD38, a type II transmembrane glycoprotein predominantly expressed in blood cells, is a bifunctional ectoenzyme directly involved in the metabolism of cADP-ribose (cADPR). This is a potent Ca2+...
Coexistence of carriers for dopamine and GABA uptake on a same nerve terminal in the rat brain.
The ability of gamma-aminobutyric acid (GABA) to affect the release of [3H]-dopamine in rat brain synaptosomes prepared from corpus striatum, frontal cortex and hypothalamus and prelabelled with the...
Release-regulating autoreceptors of the GABAB-type in human cerebral cortex.
Bonanno, G., Cavazzani, P., Andrioli, G. C., Asaro, D., Pellegrini, G., Raiteri, M.
1. The depolarization-evoked release of gamma-aminobutyric acid (GABA) and its modulation mediated by autoreceptors were investigated in superfused synaptosomes prepared from fresh human cerebral...
Cholecystokinin release mediated by 5-HT3 receptors in rat cerebral cortex and nucleus accumbens.
1. The effects of 5-hydroxytryptamine (5-HT) on the release of cholexystokinin-like immunoreactivity (CCK-LI) were examined in synaptosomes prepared from rat cerebral cortex and nucleus accumbens and...
Subclassification of release-regulating alpha 2-autoreceptors in human brain cortex.
Raiteri, M., Bonanno, G., Maura, G., Pende, M., Andrioli, G. C., Ruelle, A.
1. Release-regulating alpha 2-autoreceptors in human brain were characterized pharmacologically in cortical slices from patients undergoing neurosurgery to remove subcortical tumours; the slices were...
Bonanno, G., Gemignani, A., Schmid, G., Severi, P., Cavazzani, P., Raiteri, M.
1. The release of somatostatin-like immunoreactivity (SRIF-LI) in the human brain was studied in synaptosomal preparations from fresh neocortical specimens obtained from patients undergoing...
1. Desensitization is an important characteristic of glutamate receptors of the alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA) type. 2. Stimulation of N-methyl-D-aspartate (NMDA) or AMPA...
Fedele, E., Jin, Y., Varnier, G., Raiteri, M.
1. Nitric oxide (NO) is known to stimulate soluble guanylyl cyclase, thereby eliciting an elevation of guanosine 3':5'-cyclic monophosphate (cyclic GMP) in target cells. Recently, a selective...
Grilli, M, Raiteri, L, Patti, L, Parodi, M, Robino, F, Raiteri, M, ...
Release-regulating dopamine autoreceptors in human cerebral cortex.
Fedele, E., Andrioli, G. C., Ruelle, A., Raiteri, M.
Slices from fresh specimens of human neocortex which had to be removed during neurosurgery to reach subcortical tumours were labelled with [3H]-dopamine and stimulated electrically. Quinpirole, a...