488results about How to "Change pressure" patented technology

A method and improved apparatus for detecting leaks in pressurized pipeline systems, which compensate for the thermally induced volume changes of the liquid in the line during a test that are produced by both the nonlinear changes in the mean temperature of the liquid and the pressure-induced perturbations of the temperature of the liquid.

A system and method for delivering a flow of breathing gas to an airway of a patient. A characteristic that varies based on variations of the flow of the breathing gas is monitored and used to determine a Target Flow for the gas delivered to the patient. The Target Flow is set to a level sufficient to treat Cheyne-Stokes respiration or a sleep disordered breathing event. The Target Flow is altered if the patient experiences a sleep disordered breathing event. In a further embodiment, the system determines an apnea detection time (Tapnea) as Tinsp plus a constant, and delivers a machine triggered breath if an amount since the start of inspiration reaches Tapnea. Yet another embodiment monitors the characteristic during an inspiratory phase of a respiratory cycle, and controls the flow of gas during the inspiratory phase of the respiratory cycle based on a result of this comparison.

Methods, devices and device components are presented for blood processing. Particularly, methods, devices and device components are presented for separating blood into blood components and collecting one or more separated blood components, which reduce the incidence of blood vessel infiltration and enhance donor comfort. In one aspect, the invention provides blood processing methods having a return flow rate which decreases systematically during a return time. In another aspect, the invention provides blood processing methods having a removal flow rate, return flow rate or both which are derived from a subject's total blood volume. In another aspect, the present invention provides blood processing methods wherein the fraction by volume of removed blood corresponding to collected components is selected to optimize blood processing efficiency and enhance the purities of collected blood components.

A drawing apparatus to perform drawing on a drawing target surface which is a surface of a fingernail or toenail having a curved shape includes a drawing tool holder which holds a drawing tool in such a way that the drawing tool is movable toward and away from the drawing target surface; and a drawing tool pressing mechanism which presses the drawing tool with a pressing force toward the drawing target surface when the drawing tool performs drawing. The drawing tool pressing mechanism changes the pressing force in accordance with a change in height of a position to be touched by the drawing tool on the drawing target surface according to the curved shape due to a change in position where the drawing tool touches the drawing target surface, to reduce a change in pressure on the drawing target surface from the drawing tool.

The invention relates to a security-enhanced authorizing and authenticating method of mobile application. The security-enhanced authorizing and authenticating method of the mobile application, disclosed by the invention, comprises the following steps: registering, and acquiring basic information of the mobile application by a publishing system; pre-authorizing, generating a pre-authorizing code of the mobile application by utilizing the basic information, and embedding the pre-authorizing code in a mobile application program; performing enhanced publishing and authorizing, automatically detecting whether the pre-authorizing code and the basic information of the mobile application are correct or not by the publishing system, if so, automatically publishing, collecting practical feature information and a publishing code of the mobile application, and generating a security-enhanced authenticating code with the pre-authorizing code; reliably installing, acquiring the practical feature information, the pre-authorizing code and the publishing code of the mobile application while installing the mobile application so as to generate the security-enhanced authenticating code, and authenticating reliable installation; and reliably starting, in the event of starting the mobile application every time, detecting whether the pre-authorizing code is correct, and starting if the pre-authorizing code is correct. The invention provides a method for detecting the security reliability of the mobile application; and therefore, the problem that user information is stolen as the mobile application is maliciously tampered is effectively avoided.