Abstract: A model train track is provided that includes a plurality of track segments. Each track segment may include a roadbed, a plurality of rails, and a plurality of magnetic devices that are used to physically connect a track segment with an adjacent track segment. In other words, as two track segments move close to one another, the attraction between the magnetic devices on the two segments will not only pull the segments together, but, once connected, will maintain a physical connection therebetween until sufficient force is applied to overcome the magnetic attraction. Each track segment may also include at least one alignment portion, for aligning adjacent track segments during user assembly, and a plurality of contacts (e.g., biased or spring-loaded contacts) providing electrical continuity between adjacent track segments and components thereof (e.g., rails).

Abstract: Disclosed are water soluble compounds which are useful as prodrugs of COX-2 inhibitors, and pharmaceutical compositions comprising them.

Abstract: Tetrazole compounds substituted directly, or by a bridge, with i) a heteroaryl moiety containing N adjacent to the point of connection of the heteroaryl and ii) another heteroaryl or aryl ring, with at least one of the rings being further substituted with another ring, are mGluR5 modulators useful in the treatment of psychiatric and mood disorders such as, for example, schizophrenia, anxiety, depression, panic, and bipolar disorder, as well as in the treatment of pain, Parkinson's disease, cognitive dysfunction, epilepsy, circadian rhythm disorders, drug addiction, drug abuse, drug withdrawal, obesity and other diseases.