The invention is directed to a system for preventing or minimizing the spread of viruses, and to the prevention or minimization of the spread of viruses in indoor air, including one or more radiation sources (10) in a room which divide the room into smaller segments using UV-C light walls, a sensor system for detecting a movement or a presence of one or more persons (P) in the room, and a controller (16) that is designed to at least partially switch the one or more radiation sources (10) on or off as a function of at least the presence of the person (P).

According to the invention, the one or more radiation sources (10) are designed to generate a wall-type radiation field (10b) that acts as a UV-C wall, so that the room or rooms is/are divided into smaller room segments, which prevents or minimizes the spread of viruses due to the fact that the viruses are deactivated by the UV-C light, and the controller (16) is designed to at least partially switch off the radiation source (10) in question if the movement data detected by the sensor system indicate a likelihood that one of the persons (P) would like to pass through the radiation field (10b) in question.

A continuous differential-pressure steam sterilization system for a powder, and belongs to the field of material sterilization includes: a superheated steam generation system, a steam pressure and flow rate control system, a quantitative feeding system, an instantaneous differential-pressure sterilization system, a dust explosion suppression system, a sterile cooling system, a primary gas-solid separation system, a secondary gas-solid separation system, a sterile storage system, a steam recovery and reheating system, and a condensate recovery system. The continuous differential-pressure steam sterilization system shortens the thermal contact time and mainly accumulates the heat on the surface of the powder, rather than in the center of the powder, which reduces the damage to the nutritional quality of the powder. Comprehensive treatment methods such as superheated steam, temperature compensation and non-sticky inner lining are adopted to reduce the problem of powder binding, agglomeration, and even blocking in the pipe of the system.

A continuous differential-pressure steam sterilization system for a powder, and belongs to the field of material sterilization includes: a superheated steam generation system, a steam pressure and flow rate control system, a quantitative feeding system, an instantaneous differential-pressure sterilization system, a dust explosion suppression system, a sterile cooling system, a primary gas-solid separation system, a secondary gas-solid separation system, a sterile storage system, a steam recovery and reheating system, and a condensate recovery system. The continuous differential-pressure steam sterilization system shortens the thermal contact time and mainly accumulates the heat on the surface of the powder, rather than in the center of the powder, which reduces the damage to the nutritional quality of the powder. Comprehensive treatment methods such as superheated steam, temperature compensation and non-sticky inner lining are adopted to reduce the problem of powder binding, agglomeration, and even blocking in the pipe of the system.

An assembly for redirecting light emitted by an end-emitting optical fiber into an inner lumen of a body is provided. According to one implementation, the body includes one or more surfaces disposed on or in the body onto which the light is configured to impinge when the end emitting optical fiber is activated, the one or more surfaces being configured to alter the trajectory of the light so that the light is directed to impinge on a light reflector of a cap removably attached to the body, the light reflector of the cap being configured to redirect the light distally into the inner lumen of the body.

A cleanroom autoclave system including a reusable autoclave breather bag and a reusable fill line hopper cover. The autoclave bag is formed from a launderable abrasion resistant inner fabric layer and a launderable polyester outer fabric layer, and has a zipper closure. The hopper cover is formed from a circular bonnet and an open tubular skirt formed from a launderable polyester fabric, and includes an elastic portion and snaps to secure the hopper cover.

A cleanroom autoclave system including a reusable autoclave breather bag and a reusable fill line hopper cover. The autoclave bag is formed from a launderable abrasion resistant inner fabric layer and a launderable polyester outer fabric layer, and has a zipper closure. The hopper cover is formed from a circular bonnet and an open tubular skirt formed from a launderable polyester fabric, and includes an elastic portion and snaps to secure the hopper cover.

A sanitization apparatus may comprise a light source configured to emit a light having a first wavelength between 414 and 474 nm; a nonlinear crystal disposed proximal to the light source, the nonlinear crystal configured to receive the light having the first wavelength and output a first portion of the light having the first wavelength and a second portion of the light having a second wavelength, the second wavelength being half the first wavelength; and a prism configured to receive the first portion of the light and the second portion of the light, the prism configured to direct the second portion of the light toward a surface to be sanitized.

A sanitization apparatus may comprise a light source configured to emit a light having a first wavelength between 414 and 474 nm; a nonlinear crystal disposed proximal to the light source, the nonlinear crystal configured to receive the light having the first wavelength and output a first portion of the light having the first wavelength and a second portion of the light having a second wavelength, the second wavelength being half the first wavelength; and a prism configured to receive the first portion of the light and the second portion of the light, the prism configured to direct the second portion of the light toward a surface to be sanitized.

An ultraviolet device is provided, which includes a gas jetting module, a flow rate adjustment module, an ultraviolet module and a first gas channel. The gas jetting module includes an upper panel, a lower panel and a frame. The upper panel is disposed on the upper side of the frame. The lower panel is disposed on the lower side of the frame and includes one or more gas outlets. A gas chamber is formed between the upper panel, lower panel and frame. The first gas channel is connected to the gas jetting module. The flow rate adjustment module is connected to the first gas channel and adjusts the flow rate of the gas inputted into the gas chamber via the first gas channel. The ultraviolet module includes an ultraviolet light source and is connected to the gas jetting module.

An ultraviolet device is provided, which includes a gas jetting module, a flow rate adjustment module, an ultraviolet module and a first gas channel. The gas jetting module includes an upper panel, a lower panel and a frame. The upper panel is disposed on the upper side of the frame. The lower panel is disposed on the lower side of the frame and includes one or more gas outlets. A gas chamber is formed between the upper panel, lower panel and frame. The first gas channel is connected to the gas jetting module. The flow rate adjustment module is connected to the first gas channel and adjusts the flow rate of the gas inputted into the gas chamber via the first gas channel. The ultraviolet module includes an ultraviolet light source and is connected to the gas jetting module.