Improving the accuracy of 1 H-19 F internuclear distance measurement using 2D 1 H-19 F HOESY

Dual 1 H and 19 F MR LacZ Gene Reporter Molecule

INTRODUCTION: The lacZ gene encoding enzyme beta-galactosidase (β-gal) is widely used as a reporter gene in diverse biological investigations including gene therapy. However, assessing β-gal activity in vivo remains challenging. Many colorimetric substrates have been developed over the years to assess β-gal activity and more recently in vivo imaging has been demonstrated based on fluorescence, ...

F / 1 H Double - Tuned RF Coil for 19 F - labeled Drug Distribution Monitoring at 7 T

Introduction F MR imaging has many advantages in measuring F-labeled drug distribution and metabolism, such as a relatively high MR signal compared to other nuclei and no background signal. Simultaneous use of F/H-MRI is believed to be a powerful tool for measuring distribution, efficacy, and adverse reaction to drugs because it enables anatomical and F-labeled drug distribution information to ...

ar X iv : h ep - p h / 01 01 19 1 v 3 5 F eb 2 00 1 On propagation of photon in a medium

The equations for variation of the Stokes parameters and intensity of photons propagating in a medium, whose optical properties may be described by the permit-tivity tensor, are derived. Classification of different cases of photon propagation is suggested on a basis of these equations. 1 Introduction It is well known that polarized photons propagating in an optically active medium change initia...

ar X iv : h ep - p h / 99 09 31 7 v 1 1 0 Se p 19 99 LAL 99 - 45 July 1999 AFTER SITGES F . RICHARD

ar X iv : h ep - t h / 01 02 19 1 v 2 1 F eb 2 00 2 Wigner ’ s Little Group , Gauge Transformations and Dimensional Descent

Wigner’s little group[1], which is a subgroup of the Poincare group that leaves the fourmomentum invariant, is of fundamental importance for both massive and massless particles. In the latter case this group is E(2), which is a semi-direct product of T (2) (the group of translations in the plane) and SO(2). Each of these subgroups has its own role, but here we are concerned with T (2) which act...