摘要:
Various embodiments of optical fiber designs and fabrication processes for ultra small core fibers (USCF) are disclosed. In some embodiments, the USCF includes a core that is at least partially surrounded by a region comprising first features. The USCF further includes a second region at least partially surrounding the first region. The second region includes second features. In an embodiment, the first features are smaller than the second features, and the second features have a filling fraction greater than about 90 percent. The first features and/or the second features may include air holes. Embodiments of the USCF may provide dispersion tailoring. Embodiments of the USCF may be used with nonlinear optical devices configured to provide, for example, a frequency comb or a supercontinuum.
摘要:
A medical device programmer or other external system capable of programming an implantable CRM device includes a wide-QRS detection and alerting system. Upon detection of a wide QRS complex, a wide-QRS indicator produces a visual indication of the detection using one or more presentation devices such as a display screen and a printer to alert a physician or other caregiver.
摘要:
This invention provides water-swellable articles and hydrogels that contain a hydrophilic polymer and perfluorocyclobutane crosslinking segments. The perfluorocyclobutane crosslinking segments are covalently attached to the polymeric chains of the hydrophilic polymer so that the crosslinking segments chemically link the polymeric chains to each other. The present invention also provides a method of making a crosslinked hydrogel by first attaching one or more substituted aromatic trifluorovinyl or aromatic trifluorovinyl ether moieties to a hydrophilic polymer to form a modified polymer and then heating the modified polymer at an elevated temperature to form perfluorocyclobutane segments from the trifluorovinyl or trifluorovinyl ether moieties. These water-swellable articles and hydrogels may be used in biomedical and pharmaceutical applications and may be suitable for implanted joint repair materials such as an articulating or bearing surface in a hip, knee, spine, finger, ankle, elbow, wrist, or shoulder joint.
摘要:
A process for continuous refining of steel via multiple distinct reaction vessels for melting, oxidation, reduction, and refining for delivery of steel continuously to, for example, a tundish of a continuous caster system, and associated apparatus.
摘要:
A flexible segmented bearing implant includes a body having opposed top and bottom surfaces. At least one of the top and bottom surfaces is configured to articulate with an abutting joint component.
摘要:
The present invention provides a personal care product including a wrapper having at least one free edge, an absorbent personal care article and a sensory cue providing indicia as to the location of the free edge. In one embodiment, the wrapper is a wrapper component and has a first panel, a back panel and a second panel, where the first panel is connected to the back panel and the second panel is connected to the back panel at an opposite end from where the first panel is connected to the back panel. The second panel having a free edge positioned adjacent the first panel, wherein the second panel has a first set of sensory attributes which terminate at the free edge of the second panel and the first panel has a second set of sensory attributes which are adjacent the free edge of the second panel. In the present invention, at least one attribute from the first set of sensory attributes or at least one attribute from the second set of attributes is different from attributes from the other set. The different attribute provides a contrast between the second panel and the first panel, and this contrast provides a sensory cue providing clear indicia as to the location of the free edge of the second panel. Also provided is a method of using the personal care product and wrapper. The sensory cue can also be used to direct a user as to how to open the wrapper.
摘要:
A protection circuit for use with a charger and a chargeable element, such as a rechargeable lithium ion battery, comprises a shunt regulator having a threshold ON voltage coupled in parallel across the chargeable element, and a temperature-dependent resistor, e.g., a positive temperature coefficient device, coupled in series between the charger and the chargeable element. The temperature dependent resistor is thermally and electrically coupled to the shunt regulator, wherein the first variable resistor limits current flowing through the shunt regulator if the current reaches a predetermined level less than that which would cause failure of the regulator, due to ohmic heating of the regulator.
摘要:
An electrical protection system which uses a ground fault interrupter (GFI) to protect a circuit from (A) ground faults and (B) overcurrents and/or overvoltages. For overcurrent protection, a control element may be coupled in series with the line or return input to the GFI, and a bypass element may be coupled in parallel with the control element and the GFI. In case of an overcurrent, the control element causes current to be diverted through the bypass element, thereby creating a current imbalance in the GFI circuitry causing the GFI to open the circuit. For overvoltage protection, a bypass element (e.g. a varistor) may be coupled between, e.g., the line sense input of the GFI and the return sense input of the GFI. In case of an overvoltage, the bypass element conducts current, thereby creating a current imbalance in the GFI circuitry causing the GFI to open the circuit.
摘要:
A silver halide color photographic reflection print element comprises a paper support impregnated or coated with a substance that lowers its oxygen transmission rate and its oxygen leak rate, at least one polyolefin-containing layer containing a total of at least 70 g/m.sup.2 or a polyolefin coated on the paper support, and at least one color-forming silver halide emulsion layer, said emulsion layer or layers overlying a polyolefin-containing layer. In one embodiment, the paper support is impregnated with a substance that lowers its oxygen gas transmission rate to less than 1 cc/m.sup.2 /day and its oxygen leak rate to less than a 25 cc/m.sup.2 /day. The support has low permeability to oxygen and to water vapor. The silver halide color photographic element produces a dye image with improved resistance to fading by light, particularly under conditions of prolonged exposure to low-intensity light.
摘要翻译:卤化银彩色照相反射印刷元件包括浸渍或涂覆有降低其氧气透过率和氧气泄漏速率的物质的纸张载体,至少含有至少70g / m 2的含聚烯烃的层或聚烯烃 涂覆在纸载体上,以及至少一个成色卤化银乳剂层,所述乳剂层或层叠在含聚烯烃的层上。 在一个实施方案中,纸张载体用将其氧气透过率降至小于1cc / m 2 /天并将其氧气泄漏速率降至小于25cc / m 2 /天的物质浸渍。 该载体对氧气和水蒸汽的渗透性低。 卤化银彩色照相材料产生的染料影像具有改善的抗光衰性,特别是在长时间暴露于低强度光的条件下。
摘要:
Concrete moulding apparatus (10) is provided which has a mould (19) through which concrete is extruded from a hopper (17) by the action of a pusher plate (22) reciprocating in the hopper (17) towards and away from the mould entrance (20). The pusher plate (22) is arranged to pivot during reciprocation to cause excess material forced towards the mould entrance (20) to be squeezed upwardly back into the hopper (17).