Abstract: A method was invented to convert methane concentration at the surfaces emitting fugitive methane into methane emission rate. This method requires surface scan of methane concentration using handled devices such as flame ionization detector (FID) to measure the fugitive methane near-surface concentration based on which, the methane emission rate can be calculated using a correlation expressed in a mathematical form.

Abstract: A method was invented to convert methane concentration at the surfaces emitting fugitive methane into methane emission rate. This method requires surface scan of methane concentration using handled devices such as flame ionization detector (FID) to measure the fugitive methane near-surface concentration based on which, the methane emission rate can be calculated using a correlation expressed in a mathematical form.

Abstract: A water jet toothbrush assembly injects water into a user's mouth to remove plaque and debris. The assembly includes an elongated member having a head and a handle. The head has a plurality of apertures positioned therein. A conduit extends through an interior space of the elongated member. A first end of the conduit is in fluid communication with a hose when the hose is coupled to the handle. A second end of the conduit is positioned proximate the apertures wherein the conduit is configured for delivering water to the apertures. A channel extends through an interior space of a cleaning attachment. A first end of the channel is in fluid communication with the hose when the hose is coupled to the cleaning attachment. A second end of the channel is aligned with a hole of the cleaning attachment wherein the channel is configured for delivering water to the hole.