摘要:
An overcurrent protection system which will give a rapid response to overcurrents which cause a reduction in the voltage across the load, e.g. a partial or complete short across the load, and is particularly suitable for protecting circuits against relatively small overcurrents, comprising: a circuit interruption element which, in the operating circuit, is connected in series between the electrical power supply and the electrical load, and which has (1) a closed state which permits the flow of a normal current, I.sub.NORMAL, through the circuit interruption element, and (2) an open state which permits the flow of at most a reduced current, substantially less than I.sub.NORMAL, through the circuit interruption element; a control element which, in the operating circuit, is connected in parallel with the load, and which has (1)(i) an on state, when the voltage across the control element is a normal voltage, V.sub.NORMAL, and (ii) is converted to an off state, when the voltage across the control element falls to a value V.sub.FAULT, or less, and (2) is functionally linked to the circuit interruption element so that when the control element is in the on state, the circuit interruption element is in the closed state, and when the control element is in the off state, the circuit interruption element is in the open state; and a bypass element which (1) is connected in parallel with the circuit interruption element, and (2) has (i) a start-up state such that, if the circuit interruption element is in the fault state and a current I.sub.NORMAL is passed through the bypass element, the voltage across the control element is greater than V.sub.FAULT, and (ii) a stopped state such that if the circuit interruption element is in the fault state as a result of the voltage across the control element having fallen to a value V.sub.FAULT or less, the current through the bypass element is such that the voltage across the control element remains at a value of V.sub.FAULT or less.
摘要:
Artificial or synthetic synovial fluids and methods for making such fluids are disclosed. The fluid includes selected proteins, phospholipids and hyaluronic acid and mimics the properties of human synovial fluid.
摘要:
The method and system of the present invention provides an improved technique for integrated asset management. Information is aggregated from a variety of sources into a centralized computerized database. Thereafter, asset transition events are scheduled. Information from the centralized computerized database is used in the performance of the asset transition events and information relating to the asset transition events is added to the centralized computerized database. Subsequent changes to the asset are also recorded into the centralized computerized database. As a result, a plethora of information is available within said database for the purpose of managing future asset transition events.
摘要:
The method and system of the present invention provides an improved technique for replacing, implementing and managing computer-related assets. A technician accesses the World Wide Web through a user's computer. The information resident on the computer, including information regarding the computer and the user's preferences, are downloaded to a remote storage medium through the World Wide Web. Once downloaded, all information may be removed from the user's computer. Subsequently, the technician accesses another computer such as, for example, a new computer that has been assigned to the same user. The technician accesses the World Wide Web through the new computer and downloads the information previously stored on the remote storage medium. This information can then be used to install the user's prior applications, settings and preferences on the new computer.
摘要:
Disclosed is a three-layer protective enclosure that provides resistance to water, dust, dirt, and bump protection for sensitive computers. In one embodiment, an inner membrane layer is provided, which is a thin, flexible layer that protects portions of a computer and allows the user to interact with keyboards, push buttons and other interactive features of the computer. A protective hard shell fits tightly over the membrane and provides additional sealing and rigidity to the protective enclosure. A stretchable cushion layer is placed over the hard shell which conforms to the hard shell and seals moisture, dust and dirt from entering the hard shell. The stretchable cushion layer provides cushioning and also allows access to certain controls on the computer. In another embodiment, a touch screen cover may be used with, or without, a membrane over other portions of the computer.
摘要:
The method and system of the present invention provides an improved technique for integrated asset management. Information is aggregated from a variety of sources into a centralized computerized database. Thereafter, asset transition events are scheduled. Information from the centralized computerized database is used in the performance of the asset transition events and information relating to the asset transition events is added to the centralized computerized database. Subsequent changes to the asset are also recorded into the centralized computerized database. As a result, a plethora of information is available within said database for the purpose of managing future asset transition events.
摘要:
The invention provides a multi-polymer hydrogel article having a first polymeric, water-swellable material and a second polymeric material, organized such that a first region substantially comprises the first polymeric, water-swellable material, a second region adjacent the first region comprises a mixture of the first polymeric, water-swellable material and the second polymeric material, and a third region adjacent the second region substantially comprises the second polymeric material. The article exhibits an increasing concentration gradient of the second polymeric material moving from the first region, through the second region, to the third region. The invention also provides methods for forming a multi-polymer hydrogel article by (a) forming a hydrogel structure using a first polymeric, water-swellable material, (b) creating an aerogel structure having a plurality of open pores by dehydrating the hydrogel structure, (c) contacting the aerogel structure with a second polymeric material to incorporate the second polymeric material into at least a portion of the plurality of open pores to form the multi-polymer hydrogel article, and (d) rehydrating the multi-polymer hydrogel article.
摘要:
Artificial or synthetic synovial fluids and methods for making such fluids are disclosed. The fluid includes selected proteins, phospholipids and hyaluronic acid and mimics the properties of human synovial fluid.
摘要:
An orthopedic implant including an articulation portion having a pyrolytic carbon bearing surface and a porous bone on- or in-growth structure, and methods of making the same.
摘要:
The invention provides a multi-polymer hydrogel article having a first polymeric, water-swellable material and a second polymeric material, organized such that a first region substantially comprises the first polymeric, water-swellable material, a second region adjacent the first region comprises a mixture of the first polymeric, water-swellable material and the second polymeric material, and a third region adjacent the second region substantially comprises the second polymeric material. The article exhibits an increasing concentration gradient of the second polymeric material moving from the first region, through the second region, to the third region. The invention also provides methods for forming a multi-polymer hydrogel article by (a) forming a hydrogel structure using a first polymeric, water-swellable material, (b) creating an aerogel structure having a plurality of open pores by dehydrating the hydrogel structure, (c) contacting the aerogel structure with a second polymeric material to incorporate the second polymeric material into at least a portion of the plurality of open pores to form the multi-polymer hydrogel article, and (d) rehydrating the multi-polymer hydrogel article.