Abstract: An electronic printing system prevents printing failures and interruptions associated with the inability of an image generation subsystem to generate a page image in digital form in real-time by reviewing the page contents prior to submission to the image generation subsystem. The quantity, size, geometry and location of objects on a page are analyzed to generate an internal intermediate description of the page. A determination is made if sufficient resources exist to perform real-time imaging. If real-time imaging cannot be performed, the page will be automatically simplified before the job containing the page is submitted for printing.

Abstract: In plant for the production of alkylated resins from an alcohol of boiling point greater than 100.degree. C. at atmospheric pressure, comprising an alkylation reactor, a distillation column, a condenser, and a separator, structure is provided to ensure that contact between descending alcohol-rich liquid phase and the vapor stream of alcohol and water ascending from the reactor is confined essentially to the walls of the column.

Abstract: The enzyme alkaline phosphatase having the following properties:(i)molecular weight: approximately 80 000 with 2 subunits of 40 000(iii)activator: Mg.sup.++inhibitor: EDTA(iii)thermal stability: 45.degree. C. or below(iv)optimum temperature: 35.degree.-45.degree. C.(v)pH stability: 6-11(vi)pH optimum: 10(vii)specific activity: 3000-5000 units/mg(viii)isoelectric range: between pH 5.0 and 6.0.An antibody-enzyme conjugate process for purifying alkaline phosphatase and a reagent test kit using the purified alkaline phosphatase are also disclosed.

Abstract: A process for the recovery of immunoglobulins of high purity and potency from milk, in which process milk is passed through a re-usable immunoadsorbent column comprising an insoluble carrier material to which is bound a low-affinity monoclonal antibody specific to one or more milk immunoglobulins but not specific to any other common constituent of milk, the antibody bind immunoglobulin molecules are released by eluting the immunoadsorbent.