Abstract: A folded slab waveguide laser having a hybrid waveguide-unstable resonator cavity. Multiple slab waveguides of thickness ‘t’ supporting vertical waveguide modes are physically arranged above one another in a stack and optically arranged in series through one or more cavity folding assemblies with curved mirrors. A gain medium such as a gas is arranged in each slab. Each cavity folding assembly is designed to redirect the radiation beam emitted from one slab waveguide into the next waveguide and also at the same time to provide a focus for the radiation beam so that a selected vertical waveguide mode (or modes) is (or are) coupled efficiently into the next slab.

Abstract: Embodiments are disclosed for crash detection on one or more mobile devices (e.g., smartwatch and/or smartphone). In some embodiments, a method comprises: detecting, with at least one processor, a crash event on a crash device; extracting, with the at least one processor, multimodal features from sensor data generated by multiple sensing modalities of the crash device; computing, with the at least one processor, a plurality of crash decisions based on a plurality of machine learning models applied to the multimodal features; and determining, with the at least one processor, that a severe vehicle crash has occurred involving the crash device based on the plurality of crash decisions and a severity model.

Abstract: A radio-frequency, RF, slab laser 10 with a Z-fold resonator cavity defined by an output mirror 32, a first fold mirror 34, a second fold mirror 36 and a rear mirror 30. The second fold mirror 36 is rotated by an adjustment angle away from the angle it would have if the mirrors were all plane mirrors and directed the round trip beam path by direct reflection. Moreover, the rear mirror 30 is rotated by an adjustment angle that is approximately twice the adjustment angle of the second fold mirror 36. These rotations of the rear mirror 30 and second fold mirror 36 suppresses parasitic mode paths that would otherwise exist.

Abstract: Targeted antimicrobials are described and related, compositions, methods and systems.

Abstract: A rod wrench is provided for use with hollow stem auger drills of the type wherein auger sections are connected through a key system and secured together with a fastener. The wrench comprises a body portion which seats on and connects to the top of an auger section, a slip jaw riding in an inclined jaw guide and extending through the wrench body wall, and a pair of pipe gripping jaws at the top of the wrench body. One of those jaws is fixed to the wrench body while the other is relatively movable so as to releasably grip a drill rod passing therebetween.

Abstract: This invention teaches the production of drawing quality carbon steel with a superior ingot yield. This steel is non-strain aging and is dependent upon the use of a carefully controlled silicon and manganese content to yield a final oxygen content of between 0.01% and 0.03%.