Abstract: A welding helmet if thermosetting plastic material having an exterior in the form of a mammalian head.

Abstract: A welding helmet of thermosetting plastic material having an exterior in the form of a mammalian head.

Abstract: A method for primer walking cycle sequencing of nucleic acid is provided using a presynthesized set of walking primers wherein the primers have a raised annealing temperature and/or improved annealing properties without increasing sequence complexity.

Abstract: Fluorescently labelled dideoxynucleoside triphosphates are widely used as chain-terminators in Sanger dideoxy sequencing operations. But these unincorporated dye-terminators migrate in an electrophoresis gel and obscure the desired sequence ladder. This invention provides a method and a kit for modifying the unincorporated dye-terminators, e.g. by removal of a 5'-triphosphate group by chemical or enzymatic means e.g. by use of a phosphatase enzyme.

Abstract: A method of recovering a first material, e.g. plasmid DNA, from a solution containing pre-precipitated second material, e.g. genomic DNA and cellular debris, by precipitating the first material in the presence of magnetically attractable beads which become non-specifically associated with the newly formed precipitate, using a magnet to draw down the beads and the newly formed precipitate, and removing the supernatant.

Abstract: An applications system has been developed to assist meat graders in deciding the yield and quality grades of carcasses. The applications system comprises: (1) an input for information relating to characteristics of a carcass to be graded; (2) a program comprising a knowledge base of facts and rules relating to grading of the carcasses; (3) an inference engine for processing the input information against the facts and rules of the knowledge base to arrive at yield and quality grades for the carcass; and (4) an output for the carcass grades. An embodiment useful for the grading of beef carcasses has been illustrated.

Abstract: A vibration resistant rupturable pressure relief member for protecting structure subject to vibration from reaching an overpressure condition. The rupturable pressure relief member is comprised of a rupture panel having an elongated concave-convex bulged portion formed therein and having a score pattern on a side thereof which includes an elongated score extending longitudinally across the bulged portion the ends of which connect with additional divergent scores forming opposing V-shapes.