89results about How to "Low volume" patented technology

A process for reactive distillation wherein a carboxylic acid is reacted in a reaction section of a reactive distillation column with an alcohol under esterifying conditions in the presence of a catalyst to form an ester, wherein a first supply stream comprising the carboxylic acid, a second supply stream comprising the alcohol and a third supply stream comprising an inert entrainer are supplied to the reactive distillation column, wherein the first supply stream is supplied to the column at a first entry level located just above or at the top of the reaction section, the second supply stream is supplied to the column at a second entry level located in or just below the reaction section and below the first entry level, and the third supply stream is supplied to the column at a third entry level located in or below the reaction section and not above the second entry level and wherein a bottom stream comprising the ester formed and unreacted carboxylic acid is obtained and a top stream comprising unreacted alcohol, water and entrainer is obtained.

Described is a sucking device with a sucking body as well as a shaft, whereby the sucking body is equipped with a recess extending in longitudinal direction of the sucking device. Said sucking device is designed in such manner that the recess, seen in longitudinal section, terminates essentially flat toward the anterior free end of the sucking body. The recess preferably extends essentially over the entire length of the sucking body. In sectional view, the shaft preferably presents an angulated shape. From a jaw-orthopedic aspect, this sucking device proves itself as particularly beneficial, whereby it simultaneously stimulates the baby / small child to uniform sucking and / or serves for position of repose.

A method for rapid collection and assay of oral fluids is disclosed. The method comprising the steps of: (a) placing an assay device into an oral cavity, (b) removing said assay device from said oral cavity; and (c) determining the presence or absence of at least one analyte. The assay device used in the method comprises: (i) an assay portion housing an immunochrornatographic lateral flow assay strip, the lateral flow assay strip containing at least one reagent selected from an antigen and an antibody that is used to detect one of the presence or absence of at least one analyte in a fluid; (ii) a neck portion extending from the assay portion, the neck portion forming a channel for delivery of fluid to said assay strip and the channel being defined by a first, narrow part proximal to the assay portion and a second part including an opening for receiving the oral fluid, wherein the second part includes a channel width that is substantially wider than the channel width at the narrow end; (iii) a collection strip in fluid communication with the lateral flow assay strip, the collection strip having a first portion disposed within the channel and a second portion protruding outwardly from the neck portion opening; and (iv) a blocking strip coupled between and in flow communication with the lateral flow assay strip and the collection strip.

A device for collecting and transporting aqueous fluid from the oral cavity to a lateral chromatographic strip for test is disclosed. The lateral chromatographic strip is placed within and extend along a cavity defined in a housing. At least one inspection site to the lateral chromatographic strip is provided to enable inspection of selected sites on the lateral chromatographic strip for test results. A porous wick material protrudes from the housing to a collection site exterior of the housing at one end and communicates to the lateral chromatographic strip at the other end. The porous wick material has particulate construction, the particles adsorbing aqueous oral fluid to transport the fluid from the mouth to the lateral chromatographic strip without substantial absorption. The particles of the porous wick material are bound together to define a continuous interstitial volume for the flow of oral fluid to be transported and are treated to be hydrophilic to the adsorbed oral fluids. The porous wick material readily releases oral fluid to the lateral chromatographic strip. Prevention of reverse flow to the oral cavity from the lateral chromatographic strip naturally occurs due to the circuitous flow path of the porous wick material. A bite plate is coupled to the housing and insertable between the teeth of the patient to position the porous wick in the oral cavity for collecting the oral fluid. The bite plate is typically held in place by the occlusal force of the teeth, preferably the molars and / or the bicuspids, to position the porous wick in the buccal space. By observing the lateral chromatographic strip while the test device is in the mouth immediate test results are obtained.

An electric bicycle power structure includes a motor, a power exchange device and pedal interlocking shafts; and provides power through the motor or the pedaling pedal interlocking shafts, wherein the powerexchange device automatically switches between the motor and the pedal interlocking shafts to accomplish power saving effects. The power exchange device has a planet decelerating mechanism, a clutch and a chain wheel cover. The power exchange device is located between the motor and the pedal interlocking shaft and is capable of directly switching between these power generating devices. A chain is used to impel the gear and wheel at the chain wheel cover, and an existing transmission gear of the bicycle is employed for accomplishing transmission effects, thereby decreasing numbers of parts without changing designs of the bicycle to further reduce production costs.

A disposable device is provided for culturing and / or packaging and transporting ready-to-use viable cells cultured on membranes, gels or micro porous substrata. The device includes a housing base defining an interior for culturing cells. The membrane to be used for culturing the cells is placed inside the housing base and fixed with a ring. The base is closed by a lid, which is designed to protect the underlying cells during transport as well as minimize the volume of media used during culture, as well as transport. Media leakage is prevented by the silicon gasket as well as the snaps provided in the device.