摘要:
Disclosed are various forms of an active, isolated β-secretase enzyme in purified and recombinant form. This enzyme is implicated in the production of amyloid plaque components which accumulate in the brains of individuals afflicted with Alzheimer's disease. Recombinant cells that produce this enzyme either alone or in combination with some of its natural substrates (β-APPwt and β-APPsw-) are also disclosed, as are antibodies directed to such proteins. These compositions are useful for use in methods of selecting compounds that modulate β-secretase. Inhibitors of β-secretase are implicated as therapeutics in the treatment of neurodegenerative diseases, such as Alzheimer's disease.
摘要:
A method and apparatus for stretching and mounting a screen printing screen or mesh that separates the tensioning of the screen or mesh into two independent directions with the screen/mesh attached to two separate independent frames. The outer frame supports the screen/mesh tensioned in the print direction of movement, with a high level of tension. The inner frame tensions and mounts and tensions (when applicable) at a significantly lower tension level the screen or mesh in the non-print direction, providing image support, and acting as, or providing a fixing point for barriers to stop the leakage or loss of the print medium or ink from the screen.
摘要:
A supplemental restraint for a primary vehicle restraint system for an auto-rack railroad car which reduces or eliminates movement of the vehicle in the auto-rack railroad car. The supplemental restraint is adapted to be positioned on a grating between the tire of the vehicle and the primary restraint. One embodiment of the supplemental restraint includes a body and an expander connected to the body. After the primary restraint is locked in place on the grating, the expander of the supplemental restraint is expanded. The expansion causes a more secure engagement between the tire and the primary restraint. This causes a high level of engagement between the tire and the primary restraint system indirectly through the supplemental restraint. The supplemental restraint also maintains a higher contact area on the tire regardless of the position of the primary restraint.
摘要:
In broadest terms, a craft composition and a craft composition kit, the composition comprising: a first component in a first container and comprising a first solution of polyvinyl acetate and polyvinyl alcohol and a first colorant, a second component in a second container and comprising a second solution of a tetraborate composition in a second colorant, the first and second components being adapted to present an appearance of striated colors upon initial admixture, which appearance transforms to a uniform single color resulting from the uniform mixture of the first and second colorants. The invention also includes a method of preparing a craft composition.
摘要:
A water based thixotropic adhesive gel is disclosed which consists essentially of: water; partially hydrolyzed polyvinyl alcohol, or wherein a portion of the polyvinyl alcohol is replaced with polyvinylpyrrolidone; a water-soluble high viscosity thickening agent polymer which is compatible with the polyvinyl alcohol and which imparts thixotropic properties to the gel; a water-soluble plasticizer for the polyvinyl alcohol; and a watersoluble defoamer in proportion of ingredients so that the viscosity of the adhesive will break down when a flexible tube or squeeze bottle dispenser is finger-pressed and have a sufficiently low viscosity to allow for easy extrusion from an orifice having a diameter of about 0.06 to 0.12 inches. When pressure is released, after the desired amount of adhesive has flown out of the dispenser, the adhesive quickly reverts to very close to its original gel state so that it will not run on a vertical surface on porous and semiporous surfaces such as paper. An article of manufacture is also provided whereby the adhesive gel containing the above ingredients is in a flexible dispenser from which the adhesive can be dispensed by finger-pressure.
摘要:
A device for displaying the present tide level in relation to high and low tide. The display using a clear rod and colored elements in a manner to give the impression of fluid in a rod and the height of the fluid representing the present tide level. The colored elements being moved passed the clear rod by a cut assembly. One of the colored elements being used represents the tide level when rising and the other represents the tide level when falling. The tide level can be displayed in hours to high or low tide.
摘要:
The present invention relates to the use of the sulphenic acid amides of the general formula (I) ##STR1## in which X represents identical or different halogen atoms,Y.sup.1 and Y.sup.2 are identical or different and represent hydrogen, halogen, alkyl, alkoxy, halogenoalkyl or NO.sub.2 andZ represents halogen, --OH, --NHOH or the group --OR.sup.1,in whichR.sup.1 denotes optionally substituted radicals from the series comprising alkyl, alkenyl, alkinyl, cycloalkyl, aryl, aralkyl and heterocyclyl, orZ represents the group ##STR2## in which R.sup.2 and R.sup.3 are identical or different and denote hydrogen or a heterocyclic radical, orZ represents the group --OMin which M denotes ammonium or the equivalent of an alkali metal, alkaline earth metal or heavy metal cation, for prolonging the duration of a high activity in agents for combating soil pests.
摘要:
Physiological electrical signals such as electrocardiograph signals ae converted to digital form, amplified to a standard maximum amplitude and analyzed by a computer. The analysis may calculate the ratios of energies above and below an isoelectric line, the statistical distribution of gradients, the frequency of a maximum negative gradient and the zero content of the signal. The analysis may be used for detecting ventricular fibrillation.
摘要:
A cyanoacrylate-based adhesive composition comprises 55-92% by weight of a 2-cyanoacrylate ester, preferably the ethyl ester, from 40-30% by weight of a vinyl chloride/vinyl acetate copolymer and not more than 25% by weight of a plasticizer (the plasticizer may be omitted entirely). The copolymer is preferably a vinyl chloride/vinyl acetate/maleic acid terpolymer. The adhesive compositions have greatly reduced adhesion to skin, not forming strong skin bonds for at least 30 seconds, in contrast to conventional cyanoacrylate adhesive compositions which form, within in about one second bonds strong enough to tear skin.