Abstract: Disclosed herein are systems and methods that can involve a neuromodulation device configured to perform in multiple electrical modulation modes with a single architecture.

Abstract: A receptacle connector includes a receptacle housing, pin contacts, and a retainer. The receptacle housing has a convex wall portion, a concave wall portion, a first side wall portion that extends between the convex wall portion and the concave wall portion, and a second side wall portion that extends between the convex wall portion and the concave wall portion. The convex wall portion, the concave wall portion, the first side wall portion, and the second side wall portion at least partially define a cavity having an open end. The pin contacts are located in the cavity of the receptacle housing. The retainer has a first side latch and a second side latch that are configured to extend into the cavity in an engaged position and to move outward from the cavity to a disengaged position.

Abstract: In an example of a method for three-dimensional printing, a first amount of a binding agent is selectively applied, based on a 3D object model, to individual build material layers of a particulate build material including metal particles to forming an intermediate structure. The binding agent and/or a void-formation agent is selectively applied, based on the 3D object model, to at least one interior layer of the individual build material layers so that a total amount of the binding agent, the void-formation agent, or both the binding agent and the void-formation agent in the at least one of the individual build material layers is greater than the first amount. This patterns an area that is to contain voids. The intermediate structure is heated to form a 3D structure including a void-containing breakable connection.

Abstract: Azetidine carboxylic acid esters are converted into enol silyl ethers which, as enamino ketene acetals, undergo ready oxidative cleavage of the ethylenically unsaturated double bond, e.g. by dye-sensitized photo-oxygenation, to form beta-lactams. The beta-lactams and substitution products thereof are useful intermediates in the synthesis of biologically active lactams.