Abstract: Techniques for quantifying respiration using a wearable device are described. According to some aspects, a wearable device includes multiple thermal sensors thermally coupled to one or more heat spreaders. The wearable device may in some cases be small enough to be wearable between the mouth and nose of the patient, such as via an adhesive attachment to the upper lip. When the patient exhales, air is produced through the mouth and/or through the nose. Each heat spreader may absorb heat of exhaled air which may thermally propagate to a thermal sensor coupled to the heat spreader. By measuring the change in temperature over time measured by the thermal sensors, measures of respiration such as respiratory rate, minute volume and/or tidal volume of the patient may be determined. Such measures may be determined by the wearable device or by an external device to which data is transmitted.

Abstract: Composition of Methyl Ethyl Ketone Peroxide as biocide, applied by spraying, for human and veterinary hygiene; of utility in the private sphere and in public health and, particularly, conserving the organic matter of its natural surface decomposition due to the passage of time until the collection for treatment and/or elimination, preventing proliferation of organisms accompanying said situation and the risk of intrinsic infectious contagion. The compositions permitting such biocidal action are a mixture of from 0.01 to 14% Methyl Ethyl Ketone Peroxide, from 1 to 60% glycols or alcohols, from 1 to 60% water and, optionally, from 0 to 10% stabilisers, colourants, scents and/or other additives, from 0 to 10% surfactants and from 0 to 10% acids, conferring on the product a solubility permitting its spraying to act as antiseptic for healthy skin, disinfectant for surfaces and for the maintenance of organic matter and its residues.

Abstract: An earth boring rotary drill bit suitable for use in drilling oil wells and the like includes a rotating cone mounted on a journal that is protected by a primary seal and a secondary seal. The seals provide independent sealing action while coacting to stabilize the rotary motion of the cone. The primary seal defines a moving sealing surface in contact with the journal, and the secondary seal defines a moving sealing surface in contact with the rotating cone. The journal can have a frusto-conical or cylindrical configuration.