Abstract: The present invention relates to a method for preparing high-purity vanadium pentoxide from vanadium-bearing shale by all-wet process. The technical solution is: the “Gradient continuous leaching system of vanadium-bearing shale” is used to wet activate and compound leach vanadium-bearing shale to obtain vanadium-containing acid leachate. The “pH adjusting device of the vanadium-containing acid leachate” is used to adjust the pH of vanadium-containing acid leaching leachate. The post-treatment solution is subjected to hydroxime countercurrent extraction after oxidation, and the raffinate returns to the water using in the wet activation and electrodialysis after neutralization, and the loaded organic phase is regenerated by countercurrent reduction stripping. The regenerated organic phase directly returns to hydroxime countercurrent extraction.

Abstract: There is provided a computer-implemented for controlling a system, the method comprising: acquiring conditions under which data required for analyzing a first biological parameter is to be captured; determining, based on the conditions, requirements associated with an orientation of a body part, a position of a body part, a movement of a body part, and/or a level of a second biological parameter; acquiring, based on the requirements, a current orientation of the body part, a current position of the body part, a current movement of a body part of the subject, and/or a current level of the second biological parameter; determining a required adjustment of an orientation of the body part, a position of the body part, and/or a second biological parameter, based on the respective requirement and the information associated with the respective requirement; generating guidance for the subject based on the determined required adjustment.

Abstract: An apparatus, system and method for controlling airflow is described. The apparatus comprises a wall which delimits a flared bore. The apparatus further comprises at least one air guide member which retractably protrudes into the flared bore from the wall. The flared bore widens to an outlet, thereby to permit a diverging airflow to be expelled therefrom when each of the at least one air guide member is retracted. When the at least one air guide member protrudes into the flared bore, air flowing in the flared bore is guided by a surface, e.g. a concave surface, of the respective air guide member away from the wall and towards the outlet. The retractable air guide member thus enables the direction and/or degree of convergence of the air flowing out of the outlet to be controlled.

Abstract: A face mask has a centrifugal fan assembly, with a radial outlet outside the mask cavity. A flow adjusting element is added to prevent outlet flow from the fan assembly traveling along the outside of the mask and reaching the user, for example at the neck.

Abstract: The invention provides a monitoring device for monitoring an air cleaning system for determining when a particle filter of the air cleaning system needs cleaning or replacement. The monitoring device is a remote unit for application to the air cleaning system when a periodic monitoring function is to be performed. It is used to monitor changes in the sound made by the air cleaning system over time to derive information relating to the filter status.

Abstract: A breathing mask including a vent system for ventilating the mask, a detector for providing respiration data of a user and located for sensing at least one physical property of air inside the breathing mask when worn by a user and a controller configured to activate the vent system based on the respiration data. The controller may be configured to predict future respiration data based on historic respiration data of at least one earlier detected inhaling or exhaling cycle, determine whether a future inhaling or exhaling cycle will occur based on predicted future respiration data and activate the vent system before the determined future inhaling or exhaling cycle commences.

Abstract: A particle or pollen sensor comprises an array of relative humidity sensors. A change in relative humidity is representative of a particle or pollen in contact with one or more of the sensors. A size and/or shape of a particle or pollen in contact with one or more of the sensors is optionally also determined based on the number and/or configuration of sensors. From this information, a particle or pollen type is determined.

Abstract: A particle sensor is provided for sensing the number or mass concentration of particles within a particular particle size range, the particles having a particle size distribution. The sensor comprises a light source (14) for providing light which is scattered by the particles to generate scattered light; a light detector (16, 18) for detecting the scattered light to provide a light detector signal; and a controller (24) for analyzing the light detector signal to determine information relating to the particle size distribution. Based on that information relating to the particle size distribution, the controller selects a mode of operation of the particle sensor to sense the particles only within the particular size range.

Abstract: The invention provides an interactive user system adapted to adjust the manner in which the interactive user system interacts with a target user and a support user, the support user being a support provider of the target user. The interactive user system includes a sensor arrangement comprising one or more sensors for monitoring the target user and the support user and/or receiving an input from the target user and/or the support user, thereby obtaining user data relating to a mental state of the target user and the support user, for example a behavioral state or a psychological state of the target user and the support user. The interactive user system further includes a processor adapted to: operate the interactive user system in an initial operation mode, the initial operation mode having a mode type; determine, based on the user data and the mode type, an operation mode adjustment; and apply the operation mode adjustment to the interactive user system.

Abstract: A particle or pollen sensor comprises an array of relative humidity sensors. A change in relative humidity is representative of a particle or pollen in contact with one or more of the sensors. A size and/or shape of a particle or pollen in contact with one or more of the sensors is optionally also determined based on the number and/or configuration of sensors. From this information, a particle or pollen type is determined.

Abstract: Presented is a breathing mask (100), comprising: a venting system (101) for ventilating the mask; a detector (102) for providing respiration data of a user and located for sensing at least one physical property of air inside the breathing mask (100) when worn by a user; a controller (103) configured to activate the venting system (101) based on the respiration data; characterized in that the controller (103) is configured to: predict future respiration data based on historic respiration data of at least one earlier detected inhaling or exhaling cycle; and determine whether a future inhaling or exhaling cycle will occur based on predicted future respiration data; activate the venting system (101) before the determined future inhaling or exhaling cycle commences. Further, a method for controlling a venting system of a breathing mask is presented.