摘要:
A method for the preparation of quaternary modified acrylamide polymers is disclosed. Applicable to both solutions of acrylamide polymer and to water-in-oil emulsions of finely divided acrylamide polymer, the method involves reacting the acrylamide with a secondary amine formaldehyde adduct followed by quaternization with an alkylating agent and then, stabilization. The composition of these polymers is also disclosed.
摘要:
A suppression system provides more effective protection for communication stations with distributed radio and power systems. The suppression system provides surge protection both locally close to the radio station building where the power plant and telecommunication equipment are located and remotely next to the radios and antennas located outside of the building on the communication tower. Local and remote suppression units may include monitor circuitry that monitor remote and local DC voltage levels and alarm conditions. The alarm conditions may include over-voltage protection failures, intrusions, and/or water infiltration. Displays on both the local and remote suppression units identify the voltage levels and alarm conditions.
摘要:
A process and apparatus for orienting a plurality of bast stalks for decortication includes receiving a plurality of harvested bast stalks onto a moving belt. The belt has a longitudinal axis in the direction the belt is moving. The process and apparatus orients a substantial portion of the plurality of harvested bast stalks on the belt so that the harvested bast stalks are generally parallel to the longitudinal axis of the belt. The oriented plurality of bast stalks may be collected for decortication.
摘要:
A multilayered coating system consisting of a multicomponent zirconia-base or hafnia-base oxide top layer, an interlayer comprised of a plurality of sublayers and a bond coat layer is provided. The multilayered coating system of the present invention, with an interlayer comprised of a plurality of sublayers, provides a protective coating solution for silicon-base ceramic components exposed to very high temperatures and/or high gas flow velocity water vapor combustion environments. The plurality of sublayers affords for a multitude of interfaces that aid in phonon scattering within the coating system and thereby reduces its thermal conductivity. Furthermore, the plurality of interlayer sublayers afford a strain tolerant buffer between the top layer and substrate and thereby accommodate the thermal expansion mismatch between the oxide top layer (coefficient of thermal expansion (CTE) up to ˜8-10×10−6 m/m-C) and the silicon-base ceramic substrate (CTE≈4-5×10−6 m/m-C).
摘要翻译:提供了由多组分氧化锆基或铪氧化物顶层组成的多层涂层系统,由多个子层和粘结涂层组成的中间层。 本发明的多层涂层系统具有由多个子层组成的中间层,为暴露于非常高的温度和/或高气体流速的水蒸汽燃烧环境的硅基陶瓷组分提供保护涂层溶液。 多个子层提供了许多界面,这些界面有助于涂层系统内的声子散射,从而降低其导热性。 此外,多层夹层子层在顶层和衬底之间提供应变耐受缓冲,从而适应氧化物顶层之间的热膨胀失配(热膨胀系数(CTE)高达〜8-10×10 -6 m / mC)和硅基陶瓷基板(CTE≈4-5×10-6m / mC)。
摘要:
A needle-free injection device in which a gas cartridge or other source of pressurized gas is used to advance a piston and forcibly expel injectable fluid out through an injection orifice. When a gas cartridge is used, the gas cartridge may be moveable from an initial position to an actuating position in which gas is released to drive the injection, and a recoil inhibiter may be employed to prevent the gas cartridge from moving back to the initial position. A gas cartridge seal may be disposed on the gas cartridge and moveable with the gas cartridge to seal the gas cartridge against an interior wall of a gas cartridge housing. The needle-free injection device may also be configured so that sealing is compromised upon full advancement of the piston, so as to de-pressurize the device after delivery of an injection.
摘要:
A composition for thermal barrier coatings exhibiting improved thermal conductivity and toughness is provided. The composition is comprised of a base majority oxide, a first dopant oxide, at least one small rare earth oxide, at least one large rare earth oxide and at least one toughening oxide. Compared to traditional thermal barrier coatings, a composition of the present invention provides approximately twice the toughness one-third to one-half the thermal conductivity.
摘要:
A system for injecting DNA-based medications into humans is provided by the present invention. The system includes a needle-free injector with an injection orifice of approximately 0.004 inches for supplying DNA-based medication at an initial pressure of from 3900 to 4300 psi, and then immediately declining to a level of about 2800 to 3800 psi, and then immediately cutting off pressure to terminate the injection. The injector includes an annular adapter for spacing the injection orifice from the skin of the patient. The adapter includes an abutment against which the injector is disposed so that the orifice is spaced approximately 0.76-1.0 inch from the skin of the patient, the adapter having an inner diameter at the distal end of approximately 0.50-0.70 inches.
摘要:
A nickel-base superalloy article has a protective layer on a surface of the substrate. The protective layer has a composition including nickel, aluminum, and at least two modifying elements selected from the group consisting of zirconium, hafnium, yttrium, and silicon. The protective layer is preferably predominantly beta (&bgr;) phase NiAl composition. Each of the modifying elements which is present is included in an amount of from about 0.1 to about 5 percent by weight of the protective layer in the case of zirconium, hafnium, and silicon modifying element, and in an amount of from about 0.1 to about 1 percent by weight of the protective layer in the case of yttrium modifying element.
摘要:
A improved thermal barrier coating and method for producing and applying such is disclosed herein. The thermal barrier coating includes a high temperature substrate, a first bond coat layer applied to the substrate of MCrAlX, and a second bond coat layer of MCrAlX with particles of a particulate dispersed throughout the MCrAlX and the preferred particulate is Al.sub.2 O.sub.3. The particles of the particulate dispersed throughout the second bond coat layer preferably have a diameter of less then the height of the peaks of the second bond coat layer, or a diameter of less than 5 .mu.m. The method of producing the second bond coat layer may either include the steps of mechanical alloying of particles throughout the second bond coat layer, attrition milling the particles of the particulate throughout the second bond coat layer, or using electrophoresis to disperse the particles throughout the second bond coat layer. In the preferred embodiment of the invention, the first bond coat layer is applied to the substrate, and then the second bond coat layer is thermally sprayed onto the first bond coat layer. Further, in a preferred embodiment of the invention, a ceramic insulating layer covers the second bond coat layer.
摘要翻译:本文公开了一种改进的热障涂层及其生产和应用方法。 隔热涂层包括高温基材,施加到MCrAlX的基材上的第一粘合涂层和MCrAlX的第二粘合涂层与分散在整个MCrAlX中的颗粒颗粒,优选的颗粒是Al 2 O 3。 分散在整个第二粘合涂层中的颗粒的颗粒优选具有小于第二粘合涂层的峰的直径或小于5μm的直径。 制备第二粘合涂层的方法可以包括以下步骤:在整个第二粘合涂层中机械合金化颗粒,在整个第二粘合涂层中磨碎颗粒的颗粒,或者使用电泳将颗粒分散在整个第二粘合涂层 粘结涂层。 在本发明的优选实施方案中,将第一粘合涂层施加到基材上,然后将第二粘合涂层热喷涂到第一粘合涂层上。 此外,在本发明的优选实施例中,陶瓷绝缘层覆盖第二接合涂层。