Abstract: Reactors are provided that can include a first set of fluid channels and a second set of fluid channels oriented in thermal contact with the first set of fluid channels. The reactor assemblies can also provide where the channels of either one or both of the first of the set of fluid channels are non-linear. Other implementations provide for at least one of the first set of fluid channels being in thermal contact with a plurality of other channels of the second set of fluid channels. Reactor assemblies are also provided that can include a first set of fluid channels defining at least one non-linear channel having a positive function, and a second set of fluid channels defining at least another non-linear channel having a negative function in relation to the positive function of the one non-linear channel of the first set of fluid channels. Processes for distributing energy across a reactor are provided.

Abstract: A trencher machine for attachment to a tractor movably mounted hydraulically for up and down movement relative thereto, boom means for adjusting the depth of the cut in the soil, boom means pivotally mounted on a support means including cutting means thereon.

Abstract: An apparatus mounting on the main frame of a motorgrader for controlling grading and sloping of road shoulders and previously subgraded surfaces having a resilient suspension system for the moldboard depending from the main frame of the grader which is laterally spaced from the point of application of a control load by a universally-connected, double-acting hydraulic jack attached thereto; said moldboard being lifted against said resilient support relative to the main frame of the grader for grade control by a shoe, wheel or ski, which is mounted adjacent the one end thereof and arranged for sliding along a roadway or other previously graded surface as a horizontal reference, and tilted relative to the main frame for slope control by manipulation of the double-acting hydraulic jack controlled by a feedback controller which measures the error in actual moldboard tilt and compares it to a fixed vertical reference as determined by a pendulous sensor and corrects the same in establishing the desired slope to the