A scent delivery system includes scent delivery units that are configured to deliver scent at a variable scent level by being turned on and off successively according to a variable duty cycle. The scent delivery units are associated with corresponding base scent settings. The scent delivery system also includes a central controller configured to control the scent delivery units by generating command data based on a scenting schedule that indicates a desired activation time for more than one implicated scent delivery unit. The scenting schedule is configured to further indicate a scent level bias to be applied to the base scent settings that are associated with different of the implicated scent delivery units. The central controller is configured to generate the command data, based upon a variation in the scent level bias, that takes into account a corresponding variation to duty cycles that are associated with different of the implicated scent delivery units and to communicate the command data to the different implicated scent delivery units.

A honeycomb-structured catalyst for decomposing an organic substance, which includes a catalyst particle. The catalyst particle contains a perovskite-type composite oxide represented by A.sub.xB.sub.yM.sub.zO.sub.w, where the A contains at least of Ba and Sr, the B contains Zr, the M is at least one of Mn, Co, Ni, and Fe, y+z=1, 1.001≤x≤1.05, 0.05≤z≤0.2, and w is a positive value that satisfies electrical neutrality. The toluene decomposition rate is greater than 90% when toluene is decomposed using the honeycomb-structured catalyst subjected to a heat treatment at 1200° C. for 48 hours and a gas that contains 50 ppm toluene, 80% nitrogen, and 20% oxygen as a volume concentration as a target at a space velocity of 30,000/h and a catalyst temperature of 400° C.

A honeycomb-structured catalyst for decomposing an organic substance, which includes a catalyst particle. The catalyst particle contains a perovskite-type composite oxide represented by A.sub.xB.sub.yM.sub.zO.sub.w, where the A contains at least of Ba and Sr, the B contains Zr, the M is at least one of Mn, Co, Ni, and Fe, y+z=1, 1.001≤x≤1.05, 0.05≤z≤0.2, and w is a positive value that satisfies electrical neutrality. The toluene decomposition rate is greater than 90% when toluene is decomposed using the honeycomb-structured catalyst subjected to a heat treatment at 1200° C. for 48 hours and a gas that contains 50 ppm toluene, 80% nitrogen, and 20% oxygen as a volume concentration as a target at a space velocity of 30,000/h and a catalyst temperature of 400° C.

A free radical sterilization system having a chamber defining a region, and a generator for generating free radical reach effluent from a free radical electric generator and/or a vaporizer. A closed loop circulating system without a free-radical destroyer is provided for supplying the mixture of free radicals from the electric generator mixed with the hydrogen peroxide solution in the form of the effluent to the chamber. The free-radical sterilization system is used in sterilizing items in the chamber and, with an open-bottomed wound chamber, in treating wounds on a body.

A free radical sterilization system having a chamber defining a region, and a generator for generating free radical reach effluent from a free radical electric generator and/or a vaporizer. A closed loop circulating system without a free-radical destroyer is provided for supplying the mixture of free radicals from the electric generator mixed with the hydrogen peroxide solution in the form of the effluent to the chamber. The free-radical sterilization system is used in sterilizing items in the chamber and, with an open-bottomed wound chamber, in treating wounds on a body.

An aroma diffuser, including: an oil supply structure, provided with an oil storage bottle for containing essential oil and an oil delivery pipe connected to the oil storage bottle, the oil delivery pipe includes a liquid outlet, and an end side of the oil delivery pipe is provided with an atomizing space; and an air delivery structure, provided with a working mode and a wall-breaking mode, in the working mode, an atomizing airflow is generated, and a negative pressure is formed to force the essential oil to enter the atomizing space, in the wall-breaking mode, an impinging airflow and a buffering airflow are alternately generated, or a buffering airflow and an impinging airflow are alternately generated, the impinging airflow flows through the atomizing space and breaks through a surface tension of the essential oil, the buffering airflow flows through the atomizing space and takes the essential oil away.

An aroma diffuser, including: an oil supply structure, provided with an oil storage bottle for containing essential oil and an oil delivery pipe connected to the oil storage bottle, the oil delivery pipe includes a liquid outlet, and an end side of the oil delivery pipe is provided with an atomizing space; and an air delivery structure, provided with a working mode and a wall-breaking mode, in the working mode, an atomizing airflow is generated, and a negative pressure is formed to force the essential oil to enter the atomizing space, in the wall-breaking mode, an impinging airflow and a buffering airflow are alternately generated, or a buffering airflow and an impinging airflow are alternately generated, the impinging airflow flows through the atomizing space and breaks through a surface tension of the essential oil, the buffering airflow flows through the atomizing space and takes the essential oil away.

Methods, systems and devices associated with a scented electronic candle are described. In one example, an electronic candle includes an outer shell with one or more openings configured to allow a fragrance to exit to an ambient environment of the electronic candle. The outer shell comprises a central opening such that a flame element protrudes at least partially through the central opening. The device includes a light emitting component to emit a light onto the movable flame, and a mounting base positioned below the movable flame element. The device also includes a scent storage component removably coupled to the mounting base. The scent storage component includes a container to store a fragrance and an absorption member configured to draw the fragrance to the ambient environment of the electronic candle through the one or more small openings of the outer shell.

An electrically heated aerosol-generating device includes a main housing having a cavity, a closure body engageable with the main housing to enclose a cartridge in the cavity, and a heater assembly. The heater assembly includes an elongate piercing assembly configured to extend into the open-ended passage of the cartridge and one or more electric heaters. The piercing assembly has a first hollow shaft portion connected to the main housing and a second hollow shaft portion connected to the closure body. The first and second hollow shaft portions have first and second piercing surfaces configured to breakthrough first and second frangible seals when the cartridge is enclosed in the cavity.

A device for emanating materials in the environment, preferably by heat evaporation, including: a supply for materials; an emitter of materials, for emitting the materials from the supply to surrounding environment, by application of power from a power supply according to an operation mode; an operation mode adjusting mechanism for adjusting the operation mode of the emitter, by controlling the power delivered to the emitter according to a determined transfer function. The transfer function is modular, so that it can be changed or completely replaced while keeping at least partially the adjusting mechanism in the device.