Abstract: A method for tracking the allocation of resources within a document storage repository containing a user account having a user storage total and a document distributor account having a document distributor storage total. The method can include identifying a user account containing a document, the document having an attribute that defines an author of the document as a document distributor or a general user, and a storage amount defining the amount of the document storage repository used by the document. The document can be analyzed to determine whether the attribute defines the author of the document as either a document distributor or a general user. In the event that the document distributor is the author, the storage amount associated with the document is excluded from a user storage total and included in the storage total of the document distributor.

Abstract: Mining equipment for steering the cutting horizon of a mining machine cutter which is mounted on a ranging arm and which in use makes repeated traverses along the working face, comprises a boom urged into contact with the mine roof formed on a previous traverse of the machine. The boom is urged towards the mine roof by a ram hydraulically connected to a piston and cylinder device such that movement of the piston of the device is in accordance with that of the ram. Movement of the piston rod activates a flow control valve controlling operation of a ram controlling ranging of the arm.

Abstract: A holder assembly for a sensitized cutter tool on a cutter head of a mining machine, comprises an outer component mountable on the cutter head and defining a recess and an inner component engageable within the recess by movement in at least one direction, the inner component providing holder means for the sensitized cutter tool, the outer component defining an abutment face within the recess for engagement by a corresponding abutment face defined by the inner component, the abutment faces being inclined to said at least one direction of movement.

Abstract: A holder assembly for a sensitized cutter tool mountable on a cutter head of a mining machine comprises a holder adapted to hold the tool. The holder is pivotal supported abutting a mounting sensor means provided to sense cutting reaction on the tool, the cutting reaction tending to urge the holder to pivot about the mounting.

Abstract: Animal cells are grown in a vertically disposed cylindrical vessel containing a stack of parallel spaced-apart discs inclined at least 5.degree. from the horizontal and mounted to a rotatable axial shaft. The vessel is closed by a top plate having a plurality of inlets and a bottom plate with an outlet, and contains an external pumping loop for circulating contents of the vessel from the bottom to the top of the vessel. Growing of the cells is carried out by substantially filling the vessel with a mixture of animal cells and growth medium, allowing the cells to settle on the disc surfaces and then rotating the axial shaft at a speed of at least 5 rpm while continuously circulating the vessel contents from the bottom to the top of the vessel. This process and apparatus provides efficient mixing and ensures a homogeneous system within the vessel.

Abstract: Shifted photographic dyes which have good storage stability, yet rapidly unblock under processing conditions contain a blocked hydroxy group and a neighboring group that anchimerically assists the hydrolytic cleavage of the blocking group under processing conditions.

Abstract: Shifted photographic dyes which have good storage stability, yet rapidly unblock under processing conditions contain a blocked hydroxy group and a neighboring group that anchimerically assists the hydrolytic cleavage of the blocking group under processing conditions.