Abstract: Described herein is a golf club head that includes a body with a sole portion, a crown portion, a skirt portion, a forward region, and a rearward region. The golf club head also includes a face portion including a striking face with a maximum height from the ground plane of at least about 50 mm. A volume of the golf club head is at least about 370 cm3. The golf club head has a total club head mass between 190 grams and 210 grams, and the mass of the club head located above half of the peak crown height is less than or equal to 77 grams, and the percentage of the mass above half of the peak crown height is less than or equal to 39% of the total mass of the golf club head.

Abstract: A linear dovetail neck joint for a musical instrument having a neck, a body, and a fretboard. The linear dovetail neck joint relies on an internal dovetail with screw-adjustable tension while avoiding screws that go directly into the neck. The linear dovetail neck joint allows for extreme fret accessibility in the upper register of the fretboard (due to lack of heel on the neck), easier neck height adjustments, intonation correction, and unique front block configurations with hand relief—all without the need for adhesives. The linear dovetail neck joint permits a practical and aesthetically pleasing neck-to-body joint without the need for a heel on the neck. The result is a neck-to-body joint that is easily adjustable and serviceable.

Abstract: A heat transfer tube includes a container, a cavity within the container, and a heat transfer medium located within the cavity. The heat transfer medium consists essentially of a solid-gas suspension of a gas and a substantially homogeneous nanoparticle powder located within the cavity. The cavity is in a partial vacuum state. The nanoparticle powder comprises Ca(OH)2, LiH, ZrH2, or Mg(OH)2 in a solid state and is capable of substantially freely emitted and reabsorbing the gas as a function of temperature.

Abstract: A high temperature solar power tower system includes a molten salt heat transfer medium, a high temperature solar receiver, and an energy conversion system. The molten salt heat transfer medium is capable of being heated to a temperature of at least approximately 1200 degrees Fahrenheit by the high temperature solar receiver. The energy conversion system uses the heated molten salt to generate power.

Abstract: A heat transfer tube includes a container, a cavity within the container, a substantially homogeneous nanoparticle powder located within the cavity, and a gas. The cavity is in a partial vacuum state. The nanoparticle powder includes a material in a solid state capable of substantially freely emitted and reabsorbing a gas as a function of temperature, such as a hydrate, hydride, or other material.

Abstract: A solar-powered supercritical carbon dioxide turbine system includes a supercritical carbon dioxide turbine system and a solar heating system. The solar heating system has a molten salt heat transfer fluid for providing thermal energy to the supercritical carbon dioxide turbine system.

Abstract: A solar-powered supercritical carbon dioxide turbine system includes a supercritical carbon dioxide turbine system and a solar heating system. The solar heating system has a molten salt heat transfer fluid for providing thermal energy to the supercritical carbon dioxide turbine system.

Abstract: A dual neutron-gamma ray source comprises a compact neutron generator, a shield, a collimator, and an internal gamma target. The shield surrounds the compact neutron generator. The collimator traverses the shield from the compact neutron generator to a collimator port. The internal gamma target is positioned within the collimator to generate gamma rays from the neutrons.

Abstract: A variable-ratio neutron-gamma ray source comprises a neutron generator, a shield, a collimator, and an external gamma target. The neutron generator generates neutrons and the shield reduces external radiation exposure. The collimator collimates the neutrons into a neutron beam that traverses the shield. The external gamma target generates a dual neutron-gamma ray beam from the neutron beam, wherein the dual neutron-gamma ray beam has a variable neutron-gamma ratio as a function of a thickness of the external gamma target.

Abstract: A variable-ratio neutron-gamma ray source comprises a neutron generator, a shield, a collimator, and an external gamma target. The neutron generator generates neutrons and the shield reduces external radiation exposure. The collimator collimates the neutrons into a neutron beam that traverses the shield. The external gamma target generates a dual neutron-gamma ray beam from the neutron beam, wherein the dual neutron-gamma ray beam has a variable neutron-gamma ratio as a function of a thickness of the external gamma target.

Abstract: A dual neutron-gamma ray source comprises a compact neutron generator, a shield, a collimator, and an internal gamma target. The shield surrounds the compact neutron generator. The collimator traverses the shield from the compact neutron generator to a collimator port. The internal gamma target is positioned within the collimator to generate gamma rays from the neutrons.

Abstract: A structure and a method of forming the structure in high temperature sections of next generation nuclear and solar power plants where the structure consists of piping, ducting and enclosures fabricated from oxide dispersion strengthened (ODS) alloys joined by friction stir welding (FSW) to other ODS alloys or any alloy.

Abstract: Methods and apparatus are provided for a shield to protect a surface from the impact of hyper-velocity projectiles. The apparatus comprises a foam material that is configured to cover the surface to be protected and is attached directly to that surface. A coating material is typically disposed on the outer surface of the foam material and may penetrate the foam material to a predetermined depth. The foam material and the coating material are selected to form a composite having predetermined values of sonic velocity, toughness, and thermal conductivity. The composite of foam material and coating material can be significantly lighter in weight than a metal shield having equivalent protective characteristics.

Abstract: A high temperature solar power tower system includes a molten salt heat transfer medium, a high temperature solar receiver, and an energy conversion system. The molten salt heat transfer medium is capable of being heated to a temperature of at least approximately 1200 degrees Fahrenheit by the high temperature solar receiver. The energy conversion system uses the heated molten salt to generate power.