TE mechanism

Bitterwolf TE. Mechanisms and intermediates in the photochemistry of M2(CO)6(t 5-C5H5)2, where M-Cr, Mo and W, and their ring-coupled analogs. Coord Chem Rev 2001 211 235-54. 

Ratnaike RN, Jones TE. Mechanisms of drug-induced diarrhoea in the elderly. Drugs Aging 1998 13 245—253. 

Fig. 13.12. A scheme of the SE and TE exchange non-additivides. Panels (a), (b), and (cj shew the SE mechamsnL (a) Hiree non-interacting molecules (schematic representation of electron densities), (b) Pauli deformation of molecules A andB. (c) Electrostatic interaction of the Pauli deformation resulting from single electron exchanges between A and B with the dipole mcxneiit of C. (d) The TE mechanism molecules A and B exchange an electron with the mediation of molecule C. All molecular electrcm density distributions undCTgo PauU defmnation.

Target Entrance System (TES) mechanical interlock Worker safety Prevent removal of shield cask from STB with improperly installed cask lid Interlock is operable... 

The TES mechanical interlock exists to ensure that an inadequately shielded target will not be introduced into Zone 2 from the TES. Thus, the safety function of the interlock is ... 

The Target Entrance System (TES) mechanical interlock provides a worker safety function by preventing the removal from the TES of a shield cask containing an irradiated target without the shield cask lid properly installed. This interlock is relevant to both of the operational modes, since target transfer operations could be accomplished in either of these modes. 

As indicated in Section 5.3, there are no SLs or LCSs associated with the TES mechanical interlock system controls. However, since this interlock provides an important worker safety... 

The TES mechanical Interlock shall be operable for all target transfers using the TES. 

The TES mechanical interlock must be checked periodically to verify operabilify. 

There are no administrative controls associated vrith the TES mechanical interlock. 

Target Entrance System Mechanical Interlock Protection of HCF personnel from potentially lethal radiation exposures. The TES mechanical interlock must prevent a STB operator from removing the TES shield cover when the lid has been removed from a shield cask inside the TES. Administrative controls are in place to ensure periodic testing of the TES mechanical interlock that prevents removal of the TES shield cover when the shield cask lid has been removed. 

Lei us imagine that molecule B is very long and the conliguration corresponds to ABC. When C is far from A, the three-body effect is extremely small, because almost everything in the interaction is of the two-botty character, Appendix Y. If molecule C approaches A and has some non-zero low-order multipoles, e.g., a charge, then it may interact by the SE mechanism even from a far. The TE mechanism operates only at short intermolecular distances. 

TE mechanism (p. 734) polarization catastrophe (p. 738) three-body polarization amplifier (p. 738) Axilrod-Teller dispersion energy (p. 741) van der Waals radius (p. 742) van der Waals surface (p. 742) supramolecular chemistry (p. 744) hydrogen bond (p. 746)... 

---