Real-time MR imaging of myocardial regional function using strain-encoding (SENC) with tissue through-plane motion tracking.

PURPOSE: To implement real-time myocardial strain-encoding (SENC) imaging in combination with tracking the tissue displacement in the through-plane direction. MATERIALS AND METHODS: SENC imaging was combined with the slice-following technique by implementing three-dimensional (3D) selective excitation. Certain adjustments were implemented to reduce scan time to one heartbeat. A total of 10 volunteers and five pigs were scanned on a 3T MRI scanner. Spatial modulation of magnetization (SPAMM)-tagged images were acquired on planes orthogonal to the SENC planes for comparison. Myocardial infarction (MI) was induced in two pigs and the resulting SENC images were compared to standard delayed-enhancement (DE) images. RESULTS: The strain values computed from SENC imaging with slice-following showed significant difference from those acquired without slice-following, especially during systole (P < 0.01). The strain curves computed from the SENC images with and without slice-following were similar to those computed from the orthogonal SPAMM images, with and without, respectively, tracking the tag line displacement in the strain direction. The resulting SENC images showed good agreement with the DE images in identifying MI in infarcted pigs. CONCLUSION: Correction of through-plane motion in real-time cardiac functional imaging is feasible using slice-following. The strain measurements are more accurate than conventional SENC measurements in humans and animals, as validated with conventional MRI tagging.

Ethephon use and application timing of abscisic acid for improving color of 'Rubi' table grape

The objective of this work was to evaluate the effect of ethephon and of abscisic acid (ABA) application timing on the color of 'Rubi' Table grape. Eight treatments were evaluated: control, without application; ethephon 500 mg L‑1 applied seven days after veraison (7 DAV); and two concentrations of ABA (200 and 400 mg L‑1) arranged with three application timings at 7 DAV, at 15 days before harvest (DBH), and at 7 DAV + 15 DBH. ABA does not modify physical‑chemical characteristics of the cluster and improves the color of grapes, especially when applied twice (7 DAV + 15 DBH) at the concentration of 400 mg L‑1.

Complément de table de transcodage des opérations VESKA (version 1986) - ICD-9-CM

Les tables de transcodage donnent les correspondances entre codes opératoires VESKA version 1986 et codes opératoires ICD-9-CM.

Symmetries of the free Schrödinger equation in the non-commutative plane

We study all the symmetries of the free Schr odinger equation in the non-commu- tative plane. These symmetry transformations form an infinite-dimensional Weyl algebra that appears naturally from a two-dimensional Heisenberg algebra generated by Galilean boosts and momenta. These infinite high symmetries could be useful for constructing non-relativistic interacting higher spin theories. A finite-dimensional subalgebra is given by the Schröodinger algebra which, besides the Galilei generators, contains also the dilatation and the expansion. We consider the quantization of the symmetry generators in both the reduced and extended phase spaces, and discuss the relation between both approaches.

Symmetries of the free Schrödinger equation in the non-commutative plane

We study all the symmetries of the free Schrödinger equation in the non-commu- tative plane. These symmetry transformations form an infinite-dimensional Weyl algebra that appears naturally from a two-dimensional Heisenberg algebra generated by Galilean boosts and momenta. These infinite high symmetries could be useful for constructing non-relativistic interacting higher spin theories. A finite-dimensional subalgebra is given by the Schröodinger algebra which, besides the Galilei generators, contains also the dilatation and the expansion. We consider the quantization of the symmetry generators in both the reduced and extended phase spaces, and discuss the relation between both approaches.

Collection complète, par ordre chronologique, des lois, édits, traités de paix, ordonnances, déclarations et règlemens d'intérêt général antérieurs à 1789 restés en vigueur : avec des renvois à la législation nouvelle et à la jurisprudence... et une table raisonnée des matières.... V. [1778-1788] / par M. Walker,...

[Acte royal. 0420-1789]

Collection complète, par ordre chronologique, des lois, édits, traités de paix, ordonnances, déclarations et règlemens d'intérêt général antérieurs à 1789 restés en vigueur : avec des renvois à la législation nouvelle et à la jurisprudence... et une table raisonnée des matières.... III. [1737-1767] / par M. Walker,...

[Acte royal. 0420-1789]

Collection complète, par ordre chronologique, des lois, édits, traités de paix, ordonnances, déclarations et règlemens d'intérêt général antérieurs à 1789 restés en vigueur : avec des renvois à la législation nouvelle et à la jurisprudence... et une table raisonnée des matières.... IV. [1768-1778] / par M. Walker,...

[Acte royal. 0420-1789]

Collection complète, par ordre chronologique, des lois, édits, traités de paix, ordonnances, déclarations et règlemens d'intérêt général antérieurs à 1789 restés en vigueur : avec des renvois à la législation nouvelle et à la jurisprudence... et une table raisonnée des matières.... II. [1694-1736] / par M. Walker,...

[Acte royal. 0420-1789]

Collection complète, par ordre chronologique, des lois, édits, traités de paix, ordonnances, déclarations et règlemens d'intérêt général antérieurs à 1789 restés en vigueur : avec des renvois à la législation nouvelle et à la jurisprudence... et une table raisonnée des matières.... I. [420-1693] / par M. Walker,...

[Acte royal. 0420-1789]