The invention is a method for making uniformly-shaped, porous, round beads. The beads may be used as adsorbents in chromatography and as markers for studies of cell surface receptors. The beads are prepared by the co-polymerization of an acrylic monomer and a cross-linking agent in the presence of 0.05 to 5% by weight of an aqueous soluble polymer such as polyethylene oxide. Crosslinking proceeds at high temperature above about 50°C or at a lower temperature with irradiation. Beads of even shape and even size distribution of less than 2 micron diameter are formed. The beads will find use as adsorbents in chromatography and as markers for studies of cell surface receptors. There are numerous tasks involving the manipulation of an article from a remote location under the control of an operator who can place the grasping element in the proximity of the article, but cannot make the final positioning and orientation of the grasping element to successfully grasp the element. The present invention relates to a device which can make the final positioning and orientation to grasp the element. The invention incorporates a corner retroreflector, plane mirrors, photodectors and a pulsed light source to derive signals to achieve the final steps of grasping the element. It is well known that the emitted pollutants of an internal combustion engine are considerably reduced as the fuel-to-air ratio is reduced. However, as the fuel-to-air ratio is reduced, a point is soon reached where the mixture is no longer flammable. It has been found, though, that an ultra lean mixture can be made flammable if mixed with a hydrogen rich gas. This invention is a mixing device which simultaneously atomizes liquid fuel, mixes this fuel with an optimal quantity of hydrogen and combines this mixture with a prescribed quantity of air. A throttling mechanism controls the fuel delivery to the engine and also limits the fuel to air equivalence ratio to a predetermined upper boundary to inhibit the production of air pollutants and to a lower boundry which is above the lean flammability of the mixture. BRUSHLESS DC MOTOR WITH WOUND ROTOR NASA Case No. NPO-13437-1 Inventor: Edward J. Bahm No Corresponding U.S. Patent Address inquiries to: NASA Resident Legal Office Brushless de motors are gradually becoming competitive with the conventional de motor. In this invention the rotor is an electromagnet energized through a transformer having its primary winding stationary on the stator, and its secondary winding mounted on the rotor. Controlled de current applied to the motor is converted to ac current for inductive coupling to the rotating secondary winding. The ac current in the secondary winding is rectified to provide de current to the rotor field coil. While the invention of NASA Case No. NPO-13342 does provide hydrogen rich gases, it also has a tendency to form carbon. Since one of the purposes of the hydrogen generator is to provide hydrogen gas to be used in an internal combustion engine, the presence of the carbon which is generated is undesirable since it tends to clog up the induction system of the internal combustion engine. This invention minimizes the carbon output of a hydrogen rich generator by preheating the input air, then injecting atomized water into the preheated air stream and after some more preheating, the resulting steam-air mixture is introduced into the flame zone. An alternate method is to atomize the water and introduce it directly into the flame zone. |