摘要:
The invention generally provides gypsum-containing slurries including stucco, naphthalenesulfonate dispersant, and pregelatinized starch. The naphthalenesulfonate dispersant is present in an amount of about 0.1%-3.0% by weight based on the weight of dry stucco. The pregelatinized starch is present in an amount of at least about 0.5% by weight up to about 10% by weight of pregelatinized starch by weight based on the weight of dry stucco in the formulation. Other slurry additives can include trimetaphosphate salts, accelerators, binders, paper fiber, glass fiber, and other known ingredients. The invention also comprises the gypsum-containing products made with such slurries, for example, gypsum wallboard, and a method of making gypsum wallboard.
摘要:
This invention provides gypsum wallboards with a unique microstructure where the walls between voids are enhanced in thickness and strength to substantially improve the strength and handling properties of the wallboards. A method of making lightweight gypsum wallboards is also provided.
摘要:
The invention generally provides gypsum-containing slurries including stucco, a hydroxyethylated starch, naphthalenesulfonate dispersant, and sodium trimetaphosphate. The naphthalenesulfonate dispersant is present in an amount of about 0.1%-3.0% by weight based on the weight of dry stucco. The hydroxyethylated starch is present in an amount of from about 0.5% by weight to about 10% by weight based on the weight of dry stucco in the formulation. The sodium trimetaphosphate is present in an amount of about 0.1%-0.4% by weight based on the weight of dry stucco. Other slurry additives can include accelerators, binders, paper fiber, glass fiber, and other known ingredients. The invention also comprises the gypsum-containing products made with such slurries, for example, lightweight gypsum wallboard, and a method of making lightweight gypsum wallboard.
摘要:
A wedge device for a press for controllably exerting high amounts of force in a clamping operation during a semiconductor packaging process and for facilitating a linear force output in relation to its input. The wedge device is powered by a servo motor which is coupled to a planetary screw by a set of pulleys and a timing belt. The screw is mated with a nut which is prevented from rotating so that the rotation of the screw causes the nut to move in a linear direction. Metal extensions join the nut to a bottom wedge such that the wedge moves together with the nut. Slidably disposed on top of the bottom wedge is a block bearing firmly attached to a complementary wedge. The complementary wedge is free to move in a vertical direction but not in a horizontal direction. As the bottom wedge moves in a horizontal direction, the complementary wedge moves in a vertical direction. The complementary wedge is placed underneath a press to provide the clamping force necessary for a semiconductor packaging operation.
摘要:
Apparatus and methods are disclosed. In one example, a semiconductor package includes a first die that has a first surface and a first electrical lead at or near the first surface. The semiconductor package also includes a substrate that has a second surface and is coupled to the first die at a first interface. The substrate also includes a first electrode at or near the second surface and at least a first portion of an integrated passive device that is coupled to the first electrode. The first electrode is aligned with and coupled to the first electrical lead across the first interface.
摘要:
The invention relates to a method of preventing, inhibiting, arresting or reversing tumorigenesis in a cell as well as a method of inducing apoptosis in a tumor cell. The method includes increasing the amount and/or the activity of a DACT protein, or a functional fragment thereof, in the cell. Also provided is a pharmaceutical composition that comprises a compound of general formula (I), wherein A is CH or N, R1, R4 and R5 are independent from each other H, an aliphatic group, an alicyclic group, an aromatic group, an arylaliphatic group, and an arylalicyclic group comprising 0-3 heteroatoms. The heteroatoms may be N, O, S, or Si. R4 and R5 may optionally be linked so as to define an aliphatic hydrocarbyl bridge. R2 is H or a halogen such as F, Cl, Br or L. R3 is H, F, Cl or an aliphatic or arylaliphatic group that includes 1-8 main chain carbon atoms and 0-3 heteroatoms. The pharmaceutical composition also comprises a histone deacetylase inhibitor.
摘要翻译:本发明涉及一种预防,抑制,阻止或逆转细胞中肿瘤发生的方法以及诱导肿瘤细胞凋亡的方法。 该方法包括增加细胞中DACT蛋白或其功能片段的量和/或活性。 还提供了包含通式(I)的化合物的药物组合物,其中A为CH或N,R 1,R 4和R 5彼此独立地为H,脂族基团,脂环族基团,芳族基团,芳基脂族基 基团和包含0-3个杂原子的芳基脂环基团。 杂原子可以是N,O,S或Si。 R 4和R 5可以任选连接以限定脂族烃基桥。 R 2是H或卤素如F,Cl,Br或L.R 3是H,F,Cl或包含1-8个主链碳原子和0-3个杂原子的脂族或芳基脂族基团。 药物组合物还包含组蛋白脱乙酰酶抑制剂。
摘要:
Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes. The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash.
摘要:
The present invention provides a wet starch preparation system for gypsum wallboard comprising a loss-in-weight starch feeder, a venturi mixer, a vacuum pick-up unit for supplying the dry starch from the feeder at an adjustable rate to the venturi mixer, a first water pump for supplying water at an adjustable rate to the venturi mixer to form a starch pre-dispersion of from about 2% to about 10% by weight starch and a second water pump for supplying gauging water to the starch pre-dispersion, the system equipped with appropriate system controls. The present system provides more efficient use of starch such that the amount of pregelatinized starch is at least about 10% less than a system in which the starch is not pre-dispersed in water prior to the board mixer. The system can be used to make gypsum-containing products including gypsum wallboard having increased board strength and reduced board weight.
摘要:
The invention provides in one embodiment a gypsum-containing slurry including stucco and an aqueous pre-dispersion of a pregelatinized starch. Also provided is a method of making gypsum wallboard by providing a pre-dispersion of the pregelatinized starch in water, and adding the pregelatinized starch pre-dispersion to the gypsum-containing slurry. The pregelatinized starch can have a particle size distribution within the following range: d (0.1)=about 20μ-35μ, d (0.5)=about 60μ-110μ, d (0.9)=about 100μ-220μ.