摘要:
Methods and systems for analyzing samples, such as gas samples, are described. One method comprises providing a gas sample, increasing pressure applied to the gas sample to compress the sample to a smaller volume and provide a pneumatically focused gas sample, and analyzing the pneumatically focused gas sample using any of a variety of analytical techniques. Also disclosed are systems for gas analysis, including systems for analysis of pneumatically focused, and thereby concentrated, gas samples and for analysis of particulate matter in gas samples. Analytical systems constructed within personal computer cases also are disclosed.
摘要:
A hands free magnification device is provided that is capable of illuminating an area adjacent the user. A method of use of the device is also provided.
摘要:
A vascular stent comprising a drug-eluting outer layer of a porous sputtered columnar metal having each column capped with a biocompatible carbon-containing material is described. This is done by placing the stent over a close-fitting mandrel and rotating the assembly in a sputter flux. The result is a coating that is evenly distributed over the outward-facing side of the stent's wire mesh while preventing the sputtered columnar coating from reaching the inward facing side where a smooth hemocompatible surface is required. The stent is then removed from the mandrel, exposing all surfaces, and finally coated with a layer of carbon such as amorphous carbon or diamond-like carbon. The carbonaceous coating enhances biocompatibility without preventing elutriation of a therapeutic drug provided in the porosity formed between the columnar structures. The result is a stent that is adapted to both the hemodynamic and the immune response requirements of its vascular environment.
摘要:
A high temperature water gas shift catalyst comprising iron and at least one promoter is prepared via a method which comprises the preparation of a high purity iron precursor and which uses a nominal amount of water in the catalyst production. The catalyst prepared according to the inventive method is more efficient in hydrogen production under the high temperature water gas shift reaction conditions in a fixed bed test than prior art catalysts of similar composition.
摘要:
Methods and systems for providing an improved communications channel for telephone conference initiation and management are provided. Messages for initiating and managing a telephone conference are exchanged between a client computer and a gateway computer utilizing XML formatted messages transmitted over an instant messaging compatible protocol. The gateway computer converts the messages to web services requests and communicates with telephone conference network hardware utilizing the web services-based request. Status indicators from the telephone conference equipment is converted from web services requests to XML by the gateway and transmitted back to the client computer via the instant messaging protocol.
摘要:
The present invention relates to a dynamic response telecommunication system and method. The present dynamic response system marries client, server and services with telecommunication service provider's back-end to provide a richer customer experience in place of or in combination with static voice answering or messaging. The present invention enables dynamic creation of a response to an incoming telephone call based on evaluation of a calling party's credentials against local information and call rules stored on a user's computer system or device or alternatively cached at the service provider. The result can be a dynamic response message, locale and announcer information for prompt playback in a specific language as well as action options for further call processing.
摘要:
A water-free process for converting initially non-larvicidal evaporation suppressant powder into a larvicidal variant possessing utility both for abatement of use by mosquitoes of an open water catchment as a successful breeding site, and for conserving water by suppressing the evaporation of water from the same catchment. Lauryl alcohol is used as a blending agent to facilitate even distribution of mosquito-specific entomopathogens, eg., spores of Bacillus thurinqiensis variety Israelensis or Bacillus sphaericus, into the initially non-larvicidal evaporation suppressant powder. Cetyl alcohol and/or stearyl alcohol are the preferred monolayer-formers upon which effective evaporation suppression relies. For a variant larvicidal powder that lacks an effective evaporation suppression property, the same preferred monolayer-formers may be omitted from a blend of mosquito-specific pathogens, lauryl alcohol, and hydrated lime or, alternatively, acidified gypsum.
摘要:
A silver recovery apparatus is provided for removing silver from waste solutions. The apparatus includes a vessel which defines an internal cylindrical chamber having a transverse cross sectional area. An inlet port is provided at a first end of the vessel and is adapted to receive the waste solution. An outlet port is similarly provided at a location suitable for discharging the waste solution from the vessel once substantially all silver has been removed. A silver replacement core is disposed within the vessel between the inlet and outlet ports. The core substantially fills the transverse cross sectional area of the internal chamber along a longitudinal length of the vessel. The silver replacement core includes sequentially arranged first, second, and third replacement media, wherein each media is composed of a metal which is electropositive relative to silver. The first and third replacement media each have an apparent density lower than that of the second replacement medium.
摘要:
A debris management tool including a housing; an opening in the housing; a closure member movable between a closed position and an open position based upon centrifugal input. A method for managing debris in a borehole including rotating the tool as in any prior embodiment at a selected speed to cause centrifugal force to open the closure member; increasing pressure in a fluid surrounding the tool; entraining debris in fluid entering the tool due to differential pressure.
摘要:
An indicating tool includes a mandrel including a support, an indicator housing surrounding the mandrel, and a member movable radially with respect to the housing. The mandrel is movable longitudinally with respect to the indicator housing, and the indicator housing is at least substantially rotationally locked with respect to the mandrel. The member is engageable with an inner profile of an outer tubular in which the indicating tool is employed, and the member has a substantially helical side. The member is movable radially inward towards the mandrel when the support is longitudinally displaced from the member, and the member is blocked from movement radially inwards when the support is longitudinally aligned with the member.