Abstract: A method for extraction and purification of IgY from immune avian egg yolk comprising diluting a mixture of liquid egg yolk and liquid egg white in treated water; stirring the diluted mixture to obtain an egg mixture; separating the egg mixture into a first water soluble fraction, an unseparated mixture fraction, and a first separated lipophilic fraction; separating the first water soluble fraction; the unseparated mixture fraction, and the first separated lipophilic fraction; centrifuging the unseparated mixture fraction until it separates into a second water soluble fraction and a second separated lipophilic fraction; adding the second water soluble fraction to the first water soluble fraction to form a combined water soluble fraction; passing the combined water soluble fraction through an ion exchange adsorption column containing IgY-adsorbent beads to adsorb IgY; eluting the adsorbed IgY of from the ion exchange adsorption column with an eluting solution to obtain an eluant; filtering the eluant of throug

Abstract: A latching assembly for securing a battery package (12) to a portable communication device. The latching assembly includes a pair of opposed moveable latches (10), each latch (10) being located toward a side of the battery package, and a biasing member or members (13) arranged to bias the latches (10) away from each other to engage with respective catches on the portable communication device to thereby secure the battery package (12) to the portable communication device. User contacts (15) are also provided and these are operable to cause the latches (10) to move toward each other to disengage from their respective catches to enable the battery package (12) to be removed from the portable communication device.

Abstract: A four-stoke reciprocating internal combustion engine includes the capability to change the distance between the crankshaft axis and the big end of the connecting rod and hence the maximum cylinder displacement within a combustion cycle. This provides for a given inducted volume of gases to be expanded over a greater volume. An exhaust gas aperture is uncovered by the piston towards the end of the expansion stroke. The piston and crankcase space serves as a pre-compression space for supercharging air to be inducted into the cylinder via ducts. A unitary valve device sliding axially co-operates with intake and exhaust apertures of the combustion cylinder. The unitary device extends at times into a recess in the head of the piston. A diffuse ignition source is provided. A fuel pump is operated by action of the piston.

Abstract: A latching assembly for securing a battery package (12) to a portable communication device. The latching assembly includes a pair of opposed moveable latches (10), each latch (10) being located toward a side of the battery package, and a biasing member or members (13) arranged to bias the latches (10) away from each other to engage with respective catches on the portable communication device to thereby secure the battery package (12) to the portable communication device. User contacts (15) are also provided and these are operable to cause the latches (10) to move toward each other to disengage from their respective catches to enable the battery package (12) to be removed from the portable communication device.

Abstract: A four-stoke reciprocating internal combustion engine includes the capability to change the distance between the crankshaft axis and the big end of the connecting rod and hence the maximum cylinder displacement within a combustion cycle. This provides for a given inducted volume of gases to be expanded over a greater volume. An exhaust gas aperture is uncovered by the piston towards the end of the expansion stroke. The piston and crankcase space serves as a pre-compression space for supercharging air to be inducted into the cylinder via ducts. A unitary valve device sliding axially co-operates with intake and exhaust apertures of the combustion cylinder. The unitary device extends at times into a recess in the head of the piston. A diffuse ignition source is provided. A fuel pump is operated by action of the piston.