Abstract: A sample tank for receiving and storing sampled connate fluid from a subterranean geological formation. The sample tank includes a piston coaxially disposed within the tank. The piston can be disposed close to the end of the tank where the sampled fluid is introduced into the tank and urged along the length of the tank as sampled fluid is added to the tank. The piston includes an agitator for mixing the fluid and keeping particulates suspended within the fluid. The agitator includes a magnetic member, and is rotated by applying a varying electromagnetic field to the member.

Abstract: A sample tank for receiving and storing sampled connate fluid from a subterranean geological formation. The sample tank includes a piston coaxially disposed within the tank. The piston can be disposed close to the end of the tank where the sampled fluid is introduced into the tank and urged along the length of the tank as sampled fluid is added to the tank. The piston includes an agitator for mixing the fluid and keeping particulates suspended within the fluid. The agitator includes a magnetic member, and is rotated by applying a varying electromagnetic field to the member.

Abstract: A method and device for determining a formation gradient. The device comprises probes that are a set distance apart, disposing the device into a wellbore and measuring formation pressure with the probes provides formation pressures that can be correlated with the set distance. The measured pressures and correlated set distance is used to determine the formation gradient.

Abstract: A method of directly writing on a surface of a substrate with neutral molecules uses a collimated beam of neutral molecules having a first direction of travel, a laser light energy field having a second direction of travel; and intersects the laser light energy field with the collimated beam of neutral molecules at a grazing angle of incidence between the first direction of travel and the second direction of travel to control the formation of features comprising the neutral molecules on the surface of the substrate.

Abstract: A solder composition and a method 10 for producing such a solder composition is provide. The solder composition is substantially “lead-free”, has a relatively long shelf life, and has a desirable melting temperature. Particularly, the solder composition contains tin and zinc with substantially all of the exposed zinc constituents or phases being covered by a relatively thin layer of tin. The formed solder composition may be operatively used with a mildly activated “no-clean” rosin flux.

Abstract: A thermal core (10) comprising a graphite layer (12) held between two molybdenum layers (14) for dissipating heat from a plurality of chip carriers 22. Core 10 has the ability to withstand excessive vibrational loads while being light weight. Bonding molybdenum/graphite/molybdenum layers (12, 14) creates a core (10) having an increased stiffness factor which surpasses military vibrational requirements. By using a titanium layer (16) to braze graphite layer (12) and molybdenum layers (14), plating for preventing corrosion attack is not necessary.

Abstract: An electronic system having a first printed wiring board, a first integrated circuit carrier positionable on the printed wiring board and a substrate having a central portion formed of ceramic material. The substrate central portion has a specific thermal conductivity greater than 1.5.times.10.sup.-5 Wm.sup.2 /g.degree.C. The substrate may comprise a ceramic material formed in combination with a modifier of the type which increases fracture toughness thereby inhibiting crack initiation and growth. In an alternate form of the invention the elctronic system includes a substrate having a central portion formed of ceramic material and first and second opposing surfaces each clad with a metallic layer of predetermined thickness.