Abstract:
An additive composition comprises at least one colloidal metal compound or metallic species and a stabilising component, wherein the stabilising component comprises the product obtainable by the condensation reaction between: (i) at least one aldehyde or ketone or reactive equivalent thereof, and (ii) at least one compound comprising one or more aromatic moieties bearing at least one hydroxyl group and at least one further substituent chosen from a hydrocarbyl group, —COOR1 or COR1, wherein R1 represents hydrogen or a hydrocarbyl group. The composition may further include at least one lubricity enhancer. Compositions of the invention tend to resist haziness, cloudiness and phase separation at relatively low and relatively high temperatures, and in the presence of lubricity enhancers and fatty acid methyl esters (FAME).
Abstract translation:添加剂组合物包含至少一种胶体金属化合物或金属物质和稳定组分,其中稳定组分包括通过以下之间的缩合反应获得的产物:(i)至少一种醛或酮或其反应性等同物,和(ii) 至少一种包含一个或多个带有至少一个羟基的芳族部分和至少一个选自烃基-COOR 1或COR 1的其它取代基的化合物,其中 R 1表示氢或烃基。 组合物还可以包括至少一种润滑性增强剂。 本发明的组合物倾向于在相对较低和相对高的温度下以及在润滑性增强剂和脂肪酸甲酯(FAME)的存在下抵抗雾度,混浊和相分离。
Abstract:
Ablation systems comprise a support body, an energy transmitting element supported by the support body and an insulating member covering a portion of the support body and energy transmitting member. Ablation energy is transmitted from an uncovered, exposed portion of the energy transmitting element. The insulating member may be a distal portion of an introducer sheath. An open segment may be provided in the distal portion to expose a portion of the energy transmitting element. When used in cardiac ablation therapy, for example, the insulating member decreases the amount of ablation energy dissipated in the blood circulating through the heart and thermally insulates the energy transmitting member and the tissue at the ablation site, enabling better control of the ablation process. An inflatable balloon or an expandable web may be provided coupled to the distal portion of the sheath behind the open segment to provide further insulation of the energy transmitting element and of the tissue around the ablation site. In another embodiment, ablation catheters incorporate an insulating member such as the inflatable balloon, expandable web or a cover. Methods of ablating tissue are also disclosed.
Abstract:
A probe that may be used to create circumferential lesions in body tissue and, in some implementations, may also be used to perform mapping functions. The probe includes a collapsible/expandable structure that supports electrodes or other operative elements against the body tissue.
Abstract:
A control system and method are provided for the automatic startup and shutdown of a steam turbine driven chiller unit. The chiller unit includes an integrated central control panel to control operation of both the steam turbine system and the refrigerant system. The central control panel has a startup control system to automatically start the steam turbine driven chiller unit while performing necessary protective actions and a shutdown control system to automatically stop the steam turbine driven chiller unit while performing necessary protective actions.
Abstract:
A diesel fuel composition containing metallic additives that are stabilised against phase separation. The diesel fuel contains a colloidally dispersed or solubilised metal catalyst compound, which can be used for diesel particulate trap regeneration and, as a stabiliser, 5-1,000 ppm (weight) of an oil-soluble or oil-dispersible organic compound having a lipophilic hydrocarbyl chain having attached directly thereto at least two contiguous polar head functional groups, i.e., the functional groups are separated by no more than three carbon atoms. The diesel fuel composition is particularly suitable for use with diesel engines fitted with a particulate trap for emissions control.
Abstract:
A multi-analyzer system where at least two automatic clinical analyzers are linked together by a bi-directional sample rack shuttle, both analyzers initially capable of performing a slightly different menu of assays. The bi-directional incoming and outgoing sample rack transport system of a first one of the two analyzers is automatically converted into a one-way incoming sample rack transport system adapted and the incoming sample tube transport system of a second of the two analyzers is automatically converted into a one-way outgoing transport system adapted to dispose of all sample racks having sample tubes with samples finally tested by either analyzer. In the event that one of the two analyzers experiences an operating failure, the analyzer system may automatically revert to a single analyzer system employing only the operational analyzer.