Abstract: A system and method receive a first beam pattern from an optical source that includes optical beams transmitted towards a target. The system and method measure a first vertical angle between at least two of the optical beams along a first axis relative to the FMCW LIDAR system. The system and method calculate a second beam pattern based on the first vertical angle and a pivot point. The second beam pattern produces a second vertical angle between the two optical beams. The system and method adjust one or more components from a first position that forms the first beam pattern to a second position that forms the second beam pattern for transmission towards the target. The system and method receive one or more return optical beams from the target, based on the second beam pattern, to produce a plurality of points to form the point cloud.

Abstract: A microwave heating apparatus is designed to improve distribution of the microwaves introduced into a multi-mode microwave cavity for heating or other selected applications. The microwave heating apparatus includes a microwave signal generator and a waveguide to convey microwave power to the cavity. A perforated metal plate disposed within the cavity encloses a volume adjacent to the waveguide opening, forming a leaky multimode subcavity. Through multiple processes of reflection, transmission, diffraction, and scattering, the leaky subcavity serves to smooth the microwave power distribution in the near-field region adjacent to the waveguide to better disperse the energy throughout the main applicator cavity. A more uniform level of microwave power is thereby applied to the workpiece.

Abstract: Bis-quaternary ammonium salts of formula wherein Y is a group of formula NR11R12+X? or NR7; n is 0 or 1; p is 1 or 2; r and q are independently 2, 3 or 4; X is an anionic counterion and R1R2R3N— and R4R5R6N— are independently selected from groups of formula —N(R13)2R8, —N(R14)3, —N(R13)3, —N(R13)2(CH2)qOC(O)R9, and wherein R7, R11 and R12 are independently selected from C1-C18 alkyl; R8, R9, R10 and R15 are independently selected from C8-C18 alkyl and C8-C18 alkenyl; R13 is C1-C4 alkyl; R14 is C2-C4 hydroxyalkyl; and R11 is selected from C2-C4 hydroxyalkyl, C2-C4 aminoalkyl and groups of formula —CH2)rNHC(O)R15 are effective inhibitors of corrosion and biofouling of metallic surfaces in contact with gas- and oil-field fluids.

Abstract: A tree harvesting head is disclosed. An embodiment includes an elongate frame, a first support device, a second grapple arm, a second support device, and a base portion. The first support device includes a first grapple arm. The second support device includes a collector mechanism. The base portion includes a cutting device and a guard assembly.