Abstract: A method for the reaction of an isatin and cyclopropenone compound at low catalytic amount. In the presence of an amine compound and phosphite, the isatin and cyclopropenone are reacted in an organic solvent using a silicon amino rare earth compound as a catalyst to synthesize pyrano[2,3-b]indol-2-one compounds. In the reaction above, the amount of catalyst is few, and noble metal is not needed for catalysis. The present method can achieve preparation of the pyrano[2,3]indol-2-one compound efficiently and simply.

Abstract: Various control methods can indirectly determine incorrect connections between components in a respiratory therapy system. For example, errors in the connections can occur between a patient interface, a humidifier and/or a gases source. The methods can indirectly detect if a reverse flow condition exists or other error conditions. A reverse flow condition can occur when gases flows in a direction different from an intended direction of flow. The detection of the reverse flow condition can be indicative of likely errors in connections between the humidifier, patient interface and/or gases source.

Abstract: Various control methods can indirectly determine incorrect connections between components in a respiratory therapy system. For example, incorrect connections can occur between a patient interface, a humidifier, and/or a gases source. The methods can indirectly detect if reverse flow conditions or other error conditions exist. A reverse flow condition can occur when gases flows in a direction different from an intended direction of flow. The methods can be implemented at the humidifier side, at the gases source side, or both.

Abstract: Various control methods can indirectly determine incorrect connections between components in a respiratory therapy system. For example, errors in the connections can occur between a patient interface, a humidifier and/or a gases source. The methods can indirectly detect if a reverse flow condition exists or other error conditions. A reverse flow condition can occur when gases flows in a direction different from an intended direction of flow. The detection of the reverse flow condition can be indicative of likely errors in connections between the humidifier, patient interface and/or gases source.

Abstract: The present disclosure provides for an improved method of determining a water out condition in a humidified gases supply apparatus. The method includes a two-step process including a primary determination of a water out condition and a secondary determination of a water out condition. This primary determination is made during observation of the normal operation of the apparatus. During the secondary determination the method takes temporary control over the humidifying part of the apparatus. The secondary determination confirms or contradicts the primary determination.

Abstract: The present disclosure provides for an improved method of determining a water out condition in a humidified gases supply apparatus. The method includes a two-step process including a primary determination of a water out condition and a secondary determination of a water out condition. This primary determination is made during observation of the normal operation of the apparatus. During the secondary determination the method takes temporary control over the humidifying part of the apparatus. The secondary determination confirms or contradicts the primary determination.

Abstract: Various control methods can indirectly determine incorrect connections between components in a respiratory therapy system. For example, incorrect connections can occur between a patient interface, a humidifier and/or a gases source. The methods can indirectly detect if reverse flow conditions or other error conditions exist. A reverse flow condition can occur when gases flows in a direction different from an intended direction of flow. The methods can be implemented at the humidifier side, at the gases source side, or both.

Abstract: A respiratory assistance system including a humidification apparatus used for delivery of heated and humidified gases to a patient includes a humidification chamber with an associated heater and sensor, an inspiratory conduit with an associated heater and sensor, and an unheated patient interface, such as a face mask. A controller of the humidification apparatus is configured to determine a gas source and change the set point accordingly to maintain patient comfort regardless of the humidity level of the gas source.

Abstract: The present disclosure is related to systems and methods for transport pricing. The method includes determining an actual service cost and a preset service cost of each of historical orders, and an actual order count corresponding to the preset service cost. The method also includes determining, based on the actual service cost of each of the historical orders, an actual total turnover. The method further includes determining a fitting function with the total turnover as a dependent variable, and a conversion rate and a price adjustment ratio as an independent variable.

Abstract: A respiratory assistance system including a humidification apparatus used for delivery of heated and humidified gases to a patient includes a humidification chamber with an associated heater and sensor, an inspiratory conduit with an associated heater and sensor, and an unheated patient interface, such as a face mask. A controller of the humidification apparatus is configured to determine a gas source and change the set point accordingly to maintain patient comfort regardless of the humidity level of the gas source.

Abstract: Various control methods can indirectly determine incorrect connections between components in a respiratory therapy system. For example, errors in the connections can occur between a patient interface, a humidifier and/or a gases source. The methods can indirectly detect if a reverse flow condition exists or other error conditions. A reverse flow condition can occur when gases flows in a direction different from an intended direction of flow. The detection of the reverse flow condition can be indicative of likely errors in connections between the humidifier, patient interface and/or gases source.

Abstract: The present disclosure provides for an improved method of determining a water out condition in a humidified gases supply apparatus. The method includes a two-step process including a primary determination of a water out condition and a secondary determination of a water out condition. This primary determination is made during observation of the normal operation of the apparatus. During the secondary determination the method takes temporary control over the humidifying part of the apparatus. The secondary determination confirms or contradicts the primary determination.

Abstract: A respiratory assistance system including a humidification apparatus used for delivery of heated and humidified gases to a patient includes a humidification chamber with an associated heater and sensor, an inspiratory conduit with an associated heater and sensor, and an unheated patient interface, such as a face mask. A controller of the humidification apparatus is configured to determine a gas source and change the set point accordingly to maintain patient comfort regardless of the humidity level of the gas source.

Abstract: When the operator of a mobile communication system applies one of: “dynamic Tracking Area List” or “smart paging” for more efficient paging, the “real” size of the Tracking Area, i. e., the number of cells over which a S1AP-paging is broadcasted on average, becomes difficult to calculate in real time; A method of determining tracking area size information is therefore proposed comprising: obtaining the average number of paging records per cell, and dividing it by average number of RRC-Connection-Setup, for terminated calls, per cell; the result is proportional to the real TA size; the obtained value is proposed as a new KPI, Key Performance Indicator.

Abstract: When the operator of a mobile communication system applies one of: “dynamic Tracking Area List” or “smart paging” for more efficient paging, the “real” size of the Tracking Area, i. e., the number of cells over which a S1AP-paging is broadcasted on average, becomes difficult to calculate in real time; A method of determining tracking area size information is therefore proposed comprising: obtaining the average number of paging records per cell, and dividing it by average number of RRC-Connection-Setup, for terminated calls, per cell; the result is proportional to the real TA size; the obtained value is proposed as a new KPI, Key Performance Indicator.

Abstract: A method for calibrating a base station including a plurality of antennas is provided. First correction information is received from a system module, the correction information determined from first calibration of the base station Signals are received at a radio frequency module from at least one antenna of the base station Second correction information is determined on the basis of the received signals and the first correction information.

Abstract: A method for calibrating a base station including a plurality of antennas is provided. First correction information is received from a system module, the correction information determined from first calibration of the base station Signals are received at a radio frequency module from at least one antenna of the base station Second correction information is determined on the basis of the received signals and the first correction information.