A holding device for simultaneously holding several small animals includes at least three beds each for a small animal. Each bed is attached to a respective holder element. The holding device is geometrically constructed and mechanically configured where two of the holder elements can be moved together with their respective beds above a third holder element without changing the vertical orientation of the beds being attached to the two holder elements. This provides a compact holding device for a multitude of small animals facilitating flexible and easy access to each small animal when attached to the holder for generating a 3D image of all animals at the same time, e.g., in an MRI, PET, CT scanner or the like. The holding system is easy to use, in particular for rats or mice, and can easily be applied in a wide variety of locations through its small and compact construction.

A dart syringe projectile includes a tubular body front and rear ends and a bore extending between said ends. A needle assembly is mounted on the body front end and a tail assembly is mounted on the body rear end. The body bore or the tail assembly receives a striker, a percussion cap positioned in front of the striker, an explosive charge positioned in front of the percussion cap and a plunger positioned in front of the explosive charge. A reservoir cavity in front of the plunger receives a substance for injection. The dart syringe projectile has a flight configuration with the substance in the reservoir cavity and an injection configuration with the plunger propelled forwardly by the explosive charge and the substance discharged from discharge ports in the needle, which are in spaced relation behind a needle tip.

Various systems, devices, NO.sub.2 absorbents, NO.sub.2 scavengers and NO.sub.2 recuperator for generating nitric oxide are disclosed herein. According to one embodiment, an apparatus for converting nitrogen dioxide to nitric oxide can include a receptacle including an inlet, an outlet, a surface-active material coated with an aqueous solution of ascorbic acid and an absorbent wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the surface-active material and the absorbent such that nitrogen dioxide in the gas flow is converted to nitric oxide.

Various systems, devices, NO.sub.2 absorbents, NO.sub.2 scavengers and NO.sub.2 recuperator for generating nitric oxide are disclosed herein. According to one embodiment, an apparatus for converting nitrogen dioxide to nitric oxide can include a receptacle including an inlet, an outlet, a surface-active material coated with an aqueous solution of ascorbic acid and an absorbent wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the surface-active material and the absorbent such that nitrogen dioxide in the gas flow is converted to nitric oxide.

The present disclosure relates to a system for tracking wildlife such as game animals. The tracking system includes a drone that has a camera and a dart dispenser that dispenses a dart with a location transmitter. The drone sends images from the camera to a remote controller, where a user pilots the drone and observes animals for disease or other behaviors, and sends instructions to dispense the dart. The real-time location of the dart is then provided to a mobile application for use in tracking or hunting the animal.

The present disclosure relates to a system for tracking wildlife such as game animals. The tracking system includes a drone that has a camera and a dart dispenser that dispenses a dart with a location transmitter. The drone sends images from the camera to a remote controller, where a user pilots the drone and observes animals for disease or other behaviors, and sends instructions to dispense the dart. The real-time location of the dart is then provided to a mobile application for use in tracking or hunting the animal.

A method of reducing stress level in animals such as pigs may include: sealable enclosing the animals in at least one chamber; exposing the animals to a gas mixture comprising oxygen and at least one type of physiologically inert gas; gradually decreasing the oxygen concentration from a maximum level, to a minimum level; gradually increasing the at least one physiologically inert gas concentration from a minimum level to a maximum level; wherein the minimum level of the oxygen concentration is higher than the anaesthetic causing concentration for the animals.

A method of reducing stress level in animals such as pigs may include: sealable enclosing the animals in at least one chamber; exposing the animals to a gas mixture comprising oxygen and at least one type of physiologically inert gas; gradually decreasing the oxygen concentration from a maximum level, to a minimum level; gradually increasing the at least one physiologically inert gas concentration from a minimum level to a maximum level; wherein the minimum level of the oxygen concentration is higher than the anaesthetic causing concentration for the animals.

A filler for an anaesthetic vaporizer used for veterinary surgery. The filler is attached to a cylindrical bucket portion of the vaporizer. The filler is curved in shape and having a concave mounting surface that is obverse to the cylindrical bucket portion. The filler having fluid conduits therein interconnecting first apertures on the concave mounting concave surface and a filler-port unit, the first apertures on the mounting surface aligning with associated second apertures on said bucket. A gasket with a plurality of first holes aligned with first and second apertures is disposed between the bucket and the filler.

A filler for an anaesthetic vaporizer used for veterinary surgery. The filler is attached to a cylindrical bucket portion of the vaporizer. The filler is curved in shape and having a concave mounting surface that is obverse to the cylindrical bucket portion. The filler having fluid conduits therein interconnecting first apertures on the concave mounting concave surface and a filler-port unit, the first apertures on the mounting surface aligning with associated second apertures on said bucket. A gasket with a plurality of first holes aligned with first and second apertures is disposed between the bucket and the filler.