Abstract: Embodiments of an apparatus configured to removably attach a band to a wearable electronic device, and method of its use are described herein. In some embodiments, an apparatus includes a coupler removably coupleable to a frame. The coupler includes a body portion and a curved side portion disposed along a side of the body portion. The curved side portion defines a channel configured to slidingly receive an elongated post of the frame. The body portion of the coupler and the curved side portion of the coupler collectively have an end profile that the prevents insertion of the elongated post of the frame into the channel unless the body portion of the coupler is positioned at an angle within the range of about 5 degrees to about 80 degrees with respect to the frame.

Abstract: Embodiments of a wireless communications antenna of a wearable electronic device, and method of its use are described herein. An apparatus can comprise a housing having top and bottom portions, a printed circuit board (PCB), a metal frame, and a band. The top portion of the housing can include an antenna element, which can be conductively coupled to the PCB. The metal frame can have a first coupler and a second coupler. The PCB can be disposed between, and not conductively coupled to, the housing and the metal frame. The band can have first and second end portions, which can be conductively coupled to the frame when removably coupled to the first coupler and second coupler, respectively. The antenna element, the metal frame, and the first and second end portions of the band can collectively define an antenna having an antenna profile when the antenna is operational.

Abstract: This invention is directed to the reduction of the strength of ice in association with solid particulate materials, such as, for example, coal, by applying to the solid particulate material, prior to exposure to water freezing conditions, a composition comprising a mixture of a glycol derived from ethylene oxide and containing from 1 to 4 oxyethylene units and an alkyl and/or an aryl ether of a glycol derived from ethylene oxide and/or propylene oxide and containing from 1 to 9 oxyalkylene units.

Abstract: This invention is directed to a method for reducing the strength of adhesion of solid particulate materials to metal surfaces as occurs under water freezing conditions by coating the metal surface with a mixture comprising a hydrocarbon liquid which has a solidification or pour point not greater than 0.degree. F. and a saturated or unsaturated fatty acid having from about 10 to about 18 carbon atoms.

Abstract: The active life of an oxychlorination copper-containing catalyst is extended by the removal of sulfur-containing compounds from the gases fed to the catalyst reaction zone. A copper-containing oxychlorination catalyst which has been deactivated by the deposition of sulfur compounds thereon is reactivated in situ by operating the catalyst bed in an oxygen-free atmosphere for a sufficient period of time. The reactivation of the catalyst is completed when the conversions of hydrocarbon and chlorinating agent to chlorinated products indicate a high level of catalyst activity, as determined by an analysis of the gaseous effluent leaving the catalyst bed.

Abstract: Catalyst compositions comprising mixtures of salts of copper, potassium, didymium, lanthanum and magnesium are useful in the fluidized bed oxychlorination of aliphatic hydrocarbons. The catalyst composition loading is disposed on a suitable support media, preferably an alumina and does not cake or cause defluidization of the bed under start-up, operating, or shut-down conditions.