Abstract:
A fiber preform (20) is contaminated with contaminates such as silicon nitride or silicon carbide. The preform is then held in a chamber (10) with a reducing gas (29) being introduced into the chamber. The reducing gas prevents the contaminates from being oxidized. If the contaminates were oxidized, the strengh of the final fiber would be reduced.
Abstract:
Hydrophobic polymer surfaces whose level of protein binding is less than about 50-80 ng/cm are achieved by: (1) applying a coating solution composed of a solvent and a non-ionic surfactant having an HLB number of less than 5 to the surface; and (2) drying the surface to remove the solvent and thereby bring the surfactant into direct contact with the hydrophobic polymer. The combination of a low HLB number and the drying step have been found to produce low binding surfaces which can withstand multiple washes with water and/or protein-containing solutions. Alternatively, the low binding surfaces can be produced by applying the non-ionic surfactant to the mold surfaces which contact molten polymer and form the polymer into a desired shape, e.g., into a multi-well plate, a pipette tip, or the like. Further, the low binding surfaces may be produced by incorporating non-soluble, non-ionic surfactants having an HLB number of less than or equal to 10 into a polymer blend prior to molding the article.
Abstract translation:蛋白质结合水平小于约50-80ng / cm 2的疏水性聚合物表面通过以下方法实现:(1)施加由溶剂和HLB数小于5的非离子表面活性剂组成的涂布溶液 到表面; 和(2)干燥表面以除去溶剂,从而使表面活性剂与疏水性聚合物直接接触。 已经发现低HLB值和干燥步骤的组合产生低结合表面,其可以经受多次用水和/或蛋白质溶液洗涤。 或者,低结合表面可以通过将非离子表面活性剂施加到与熔融聚合物接触的模具表面并将聚合物形成所需形状,例如多孔板,移液管尖端等来制备。 此外,低粘合表面可以通过将HLB数小于或等于10的非可溶性非离子表面活性剂在模制制品之前加入到聚合物共混物中来制备。
Abstract:
A method for making an activated carbon composite which involves providing a cross-linkable resin and a support material which is wettable by the resin. The support material can be cotton, chopped wood, sisal, non-fugitive material, and combinations of these. The support is contacted with the resin; and the resin and support material are dried. The resin and support material are then shaped, the resin is cured, and the resin and any carbonizable material are carbonized. The carbon is then activated to produce the product composite. An activated carbon composite produced by the above described method in which the carbon is in the form of a continuous structure reinforced by and uniformly distributed throughout non-fugitive support material.
Abstract:
The tool (1, 3) is designed for the transport of drops (2i) which are arranged according to a predetermined spatial distribution. It comprises at least one filiform support (1) mounted on a frame (3) clearing this support, said support presenting a plurality of the areas wettable by said liquid, distributed according to a predetermined distribution over its length, these wettable areas being separated from each other by nonwettable sections of said support (1). Application to cell cultures or tests on biological molecules.
Abstract:
A laminated, optical filter lens (10) having particular application in a high-fluence laser, and a method of forming such lens. The filter lens (10) comprises a core (12) and a cladding (14 and 16), the core (12) having an essentially pure, single, fused oxide composition and the cladding (14 and 16) having a fused oxide composition different from that of the core (12) and having a coefficient of thermal expansion lower than that of the core (12).
Abstract:
A glass, glass-ceramic, or ceramic body (10) having an opening (11), a smooth outer portion (13) and textured pattern over at least a portion of its surface (12), the pattern comprising depressed, conical areas at spaced intervals on the surface, and a method of producing the depressed conical areas that employs laser radiation.
Abstract:
This invention relates to a method of rendering fused silica resistant to compaction caused by UV laser beam irradiation. The method of the invention results in a fused silica member that is desensitized to compaction caused by the long-term exposure to UV laser beams. The invention includes a means to pre-compact fused silica members using high energy radiation.
Abstract:
This invention is related to glasses for use as substrates in flat panel display devices, more specifically to a family of aluminosilicate glasses in which less than .2 mole percent and preferably no As2O3 is used as a fining agent and the beta -OH of the glass is maintained below about .5.
Abstract translation:本发明涉及用作平板显示装置中的基材的玻璃,更具体地涉及一种硅铝酸盐玻璃系列,其中少于0.2摩尔%,优选不使用As 2 O 3作为澄清剂,玻璃的β-OH 维持在低于约0.5。
Abstract:
A rheometer (10) for measuring viscosity at near-zero shear rate, for predicting stiffness or slump resistance of a free-standing paste at rest with high suspended solids therein, is provided that has a moving rod (42) with a ball-shaped tip (40) fastened at the end thereof, travelling vertically downwards at a preselected constant speed via a linearly moveable slide member (16) mounted on a slide guide bearing rail (20, 22) into a pool of paste placed in a container (C), while a digital force gauge (38) attached to such a rod (42) monitors, measures and records the maximum force exerted on the ball tip (40) during its impingement and subsequent travel downward thru the paste pool at such preselected constant speed as maintained by a controller module (34), ball screw means (28) and stepper motor (30).