Abstract: Compounds are provided which have the structure 1

Abstract: A pocket-sized picture hanger for use in building construction and interior decoration to locate and mark a desired position, mainly includes a base provided with leveling means, and a cover pivotally connected to a top of the base and provided with a light beam projecting means for selectively projecting horizontal or vertical linear beams. The base could be adjusted to a completely horizontal position by adjusting the leveling means, so as to ascertain the levelness or perpendicularity of light beams projected from the light beam projecting means.

Abstract: Compounds are provided which have the structure wherein Q is C or N, A is 0 or S, Z is O or a bond, X is CH or N and R1, R2, R2a, R2b, R2c, R3, Y, x, m, and n are as defined herein, which compounds are useful as antidiabetic, hypolipidemic, and antiobesity agents.

Abstract: A yo-yo with laser emission means mainly includes two side covers each defining a hollow space for accommodating a middle disc therein. The middle discs are provided at their outward-facing surfaces each with a seat for separately receiving a laser emission means and a light-emitting means therein, and a battery room for accommodating serially connected batteries. The laser emission means and the light-emitting means have terminals led to the batteries. When the yo-yo is manipulated by a player to rotate at a high speed, the terminals of the laser emission means and the light-emitting means contact with electrodes of the batteries due to centrifugal force and are energized by the batteries to emit laser beams and lights, respectively. The laser beams continuously project from an opening provided on the side cover and toward different directions and the lights illuminate the yo-yo, making the yo-yo particularly distinctive in the night or at a dark place.