Abstract: The problem solved by this invention is to eliminate an oil can movement of the web of an aircraft pressurized bulkhead. A hat section support stiffener is attached to the web by an adhesive. Two end brackets are attached by Hi-Loc bolts to bulkhead stiffeners and the end brackets are attached and arranged to provide a downward pressure on the hat section stiffener to assist in holding it in place. This invention is characterized by the absence of any new fasteners passing through the fatigue critical bulkhead web and also is characterized by the absence of any requirement for removal of existing fasteners, including, but not limited to those passing through the bulkhead web.

Abstract: The compounds of the present invention inhibit the HMG-CoA reductase, and subsequently suppress the biosynthesis of cholesterol. And they are useful in the treatment of hypercholesterolemia, hyperlipoproteinemia, and atherosclerosis.

Abstract: The compounds of the present invention inhibit HMG-CoA reductase, and subsequently suppress the synthesis of cholesterol. And they are useful in the treatment of hypercholesterolemia, hyperlipoproteinemia, and atherosclerosis. The compounds have the formula ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 each is independently hydrogen, optionally substituted lower alkyl, or optionally substituted aryl; R.sup.4 is lower alkyl, aralkyl, aryl, or heteroaryl, each of which is optionally substituted; X is vinylene or ethylene; Y is ##STR2## where R.sup.5 is hydrogen, lower alkyl, aryl, aralkyl, or a cation capable of forming a non-toxic pharmaceutically acceptable salt.

Abstract: A circuit board that can be manufactured economically and reliably comprises first and second insulating films and an electrically conductive heat-seal film. Circuit patterns of first and second electrical parts are formed on the first and second insulating films, respectively. These circuit patterns are selectively connected with each other through the heat-seal film. The first insulating film has a hole in which the second insulating film is retained in such a way that the patterns on the first and second insulating films are substantially coplanar with each other.

Abstract: A circuit board for use in a keyboard has a lower insulating sheet, an insulating sheet, and an upper insulating sheet stacked on top of each other. Switch circuit patterns are formed on the upper and lower insulating sheets so as to be opposed to each other. Circuit patterns acting as electrical parts such as rheostats are formed on the insulating spacer.

Abstract: There is disclosed a polyester film containing from 0.001% to 4% by weight fine particles of a crosslinked polymer having an average diameter of 0.1 to 5.mu., said fine particles being derived by pulverization from a crosslinked polymer having a specific surface area of at least 1 m.sup.2 /g and a pore volume of at least 0.1 ml/g. The films of the present invention are useful as high grade films and afford many advantages in various applications, for example, as magnetic tapes, capacitors, photography, printing plate making, releasing and the like.

Abstract: A polyester film is disclosed which comprises a polyester mainly consisting of polyethylene terephthalate and an additive amount of granular calcium terephthalate anhydride particles having a specific volume shape factor. The average particle diameter and additive amount of the granular calcium terephthalate anhydride particles may be controlled so that the film is particularly suitable as a metallized film or a condenser film.

Abstract: A polyester film is disclosed which comprises (a) a polyester mainly consisting of polyethylene terephthalate which includes first inert particles being precipitated in the polyester-forming reaction system and having an average particle diameter of 1 to 3 microns and which shows a solution haze of 25 to 75% and (b) an additive amount of second inert substance particles which are added to said polyester (a) insoluble in said polyester (a), inert to the polyester-forming reaction and have an average particle diameter of 1 to 5 microns. The film is useful as a base of a magnetic tape.

Abstract: Fibers or films with high mechanical strengths are produced from novolacs which are obtained by reaction of resols with phenols under neutral or acidic conditions.