Abstract: A printed circuit board (PCB) module may include a PCB with at least one internal PCB element and at least one external PCB element, a shielding layer fabricated from a tunable metamaterial absorber, and a structure housing the PCB. The at least one internal PCB element may be embedded between adjacent layers of the PCB. The at least one external PCB element may be coupled to an exterior surface of the PCB. The shielding layer may be tuned in response to the at least one measurement of the EMI emission and a determination of a frequency of the EMI emission from the at least one measurement. The tuning of the shielding layer may include adjusting a plurality of fins within a plurality of elements of the metamaterial absorber to absorb at least a portion of the EMI emission.

Abstract: A printed circuit board (PCB) module may include a PCB with at least one internal PCB element and at least one external PCB element, a shielding layer fabricated from a tunable metamaterial absorber, and a structure housing the PCB. The at least one internal PCB element may be embedded between adjacent layers of the PCB. The at least one external PCB element may be coupled to an exterior surface of the PCB. The shielding layer may be tuned in response to the at least one measurement of the EMI emission and a determination of a frequency of the EMI emission from the at least one measurement. The tuning of the shielding layer may include adjusting a plurality of fins within a plurality of elements of the metamaterial absorber to absorb at least a portion of the EMI emission.

Abstract: A system for identifying variations at a weld location and accommodating for the variations. The system includes two sensors positioned on each side of a welding location, with a welding device at the welding location. The sensors each emit a signal toward the welding location and receive feedback from the signal that indicates the shape and size of the welding surfaces at the welding location. The sensor information, along with the exact locations and orientations of the sensors, is utilized to determine whether one or more welding parameters should be adjusted.

Abstract: A welding system includes welding equipment for generating a welding current and voltage, a welding control system for controlling the welding current and voltage, a monitoring system for monitoring a welding parameter, and a welding helmet. The welding helmet includes a main body, a retinal tracking system configured to identify a field of view of a user by tracking movement of the user's eyes, and a visual display system configured to generate a visual image of the welding parameter and further configured to position the visual image within the field of view of the user identified by the retinal tracking system. The retinal tracking system is further configured to receive a welding parameter input from the user based on tracking movement of the user's eyes, and to communicate the welding parameter input to the welding control system to control at least one of the welding current and voltage.

Abstract: A welding system and method is disclosed for girth welding high strength materials using a short arc welding process and a self-shielding electrode. The welding system contains a welding apparatus which advances the self-shielding electrode towards a workpiece to be welded and controls the arc length and the operation of the apparatus so that the weld satisfies the requirements for welding at least American Petroleum Institute Grade X-80 line pipe. The system additionally contains a power source with a controller for creating a current pulse introducing energy into the electrode to melt the end of the self-shielding electrode and a low current quiescent metal transfer section following the end of the melting pulse during which the melted electrode short circuits against the workpiece.

Abstract: Disclosed are methods of cultivating or isolating a microorganism using one or more quinones as growth factors. Also disclosed are methods of treating a mammalian species with deficiency in symbionts using such compounds.

Abstract: A welding system and method is disclosed for girth welding high strength materials, including liquefied natural gas storage tanks, using a short arc welding process and a self-shielding electrode. The welding system contains a welding apparatus which advances the self-shielding electrode towards a workpiece to be welded and controls the arc length and the operation of the apparatus so that the weld satisfies the requirements for welding at least American Petroleum Institute Grade X-80 line pipe, or can weld liquefied natural gas storage tanks. The system additionally contains a power source with a controller for creating a current pulse introducing energy into the electrode to melt the end of the self-shielding electrode and a low current quiescent metal transfer section following the end of the melting pulse during which the melted electrode short circuits against the workpiece.

Abstract: A welding system and method is disclosed for girth welding high strength materials using a short arc welding process and a self-shielding electrode. The welding system contains a welding apparatus which advances the self-shielding electrode towards a workpiece to be welded and controls the arc length and the operation of the apparatus so that the weld satisfies the requirements for welding at least American Petroleum Institute Grade X-80 line pipe. The system additionally contains a power source with a controller for creating a current pulse introducing energy into the electrode to melt the end of the self-shielding electrode and a low current quiescent metal transfer section following the end of the melting pulse during which the melted electrode short circuits against the workpiece.

Abstract: A protective layer embodying the principles of the present invention is configured for protection of automotive surfaces, including specifically, the protection of a truck-bed against wear induced by a truck-bed liner. The protective layer has a substantially planar configuration sized to permit the layer to be positioned generally between an associated truck-bed liner and a truck-bed, whereby the abrasion is significantly reduced. The layer comprises a fibrous nonwoven fabric formed from fibrous and/or filamentary elements, with the fibrous nonwoven fabric exhibiting a sufficiently reduced coefficient of friction and sufficient durability to absorb or distribute abrasive actions, while allowing passage of moisture, thus protecting the automotive surfaces against potentially detrimental environmental conditions.

Abstract: A protective layer embodying the principles of the present invention is configured for protection of automotive surfaces, including specifically, the protection of a truck-bed against wear induced by a truck-bed liner. The protective layer has a substantially planar configuration sized to permit the layer to be positioned generally between an associated truck-bed liner and a truck-bed, whereby the abrasion is significantly reduced. The layer comprises a fibrous nonwoven fabric formed from fibrous and/or filamentary elements, with the fibrous nonwoven fabric exhibiting a sufficiently reduced coefficient of friction and sufficient durability to absorb or distribute abrasive actions, while allowing passage of moisture, thus protecting the automotive surfaces against potentially detrimental environmental conditions.

Abstract: A protective layer embodying the principles of the present invention is configured for protection of automotive surfaces, including specifically, the protection of a truck-bed against wear induced by a truck-bed liner. The protective layer has a substantially planar configuration sized to permit the layer to be positioned generally between an associated truck-bed liner and a truck-bed, whereby the abrasion is significantly reduced. The layer comprises a fibrous nonwoven fabric formed from fibrous and/or filamentary elements, with the fibrous nonwoven fabric exhibiting a sufficiently reduced coefficient of friction and sufficient durability to absorb or distribute abrasive actions, while allowing passage of moisture, thus protecting the automotive surfaces against potentially detrimental environmental conditions.