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40results about How to "Eliminate retention" patented technology

Chromatographic materials for the separation of unsaturated molecules

ActiveUS20140319057A1Superior retention , peak capacity and peak shapeImprove peak capacity and tailingIon-exchange process apparatusSilicon organic compoundsChemistryStationary phase
The present disclosure relates to a method of separating a compound of interest, particularly unsaturated compound(s) of interest, from a mixture. The compound is separated using a column having a chromatographic stationary phase material for various different modes of chromatography containing a first substituent and a second substituent. The first substituent minimizes compound retention variation over time under chromatographic conditions. The second substituent chromatographically and selectively retains the compound by incorporating one or more aromatic, polyaromatic, heterocyclic aromatic, or polyheterocyclic aromatic hydrocarbon groups, each group being optionally substituted with an aliphatic group.
Owner:WATERS TECH CORP

Application of double-layer aseptic vacuum technique in external package of large volume injection

The invention relates to application of a double-layer aseptic vacuum technique in the external package of large volume injection. The invention adopts a technical scheme comprising the following steps of: 1, filling medicinal liquid; 2, packaging the large volume injection into the external protective package and sealing; 3, vacuumizing a space between the internal package and the external package; 4, placing the package in a sterilizing device to sterilize; 5, drying; and 6, checking micro-leakage and removing the large volume injection which forms obvious water mist or droplet between the internal package and the external package. The external protective package can be PVC and non-PVC materials. Through the application, the large volume injection which forms micro-package in the internal package can be removed conveniently and effectively. At the same time, the application ensures that the internal package is under an aseptic condition and is not polluted from the sterilizing process to the use in medicinal places; and when used in the medicinal places with strict hygiene level requirement (such as a surgical operating room, an intensive care unit and the like), the internal package does not pollute the environments and does not carry bacteria into the medicinal places.
Owner:SICHUAN TAIPINGYANG PHARMA

Split-type material storage die head in two-layer two-spiral channel

InactiveCN102962987AEliminates melt retention problemsAvoid heat loss and inhomogeneityHollow articlesMelt temperatureOuter core
The invention discloses a split-type material storage die head in a two-layer two-spiral channel. In the split-type material storage die head, melt mixing is even, double-layer melt temperature is uniform, temperature loss is small and the die head is contained by two-layer melt, and seam is removed. The split-type material storage die head comprises a die head outer barrel, an upper end cover, a lower end cover, an inner core, an outer core, a centre rod, a flow guide sleeve, a die and a pushing mechanism. The die head is characterized in that a split-flow core sleeve fixedly connected with the upper end cover is mounted on the outer core; a split-flow hole corresponding to a feed hole of the die head outer barrel is formed in the split-flow core sleeve; two outer spiral channels are arranged on the outer core; two inner spiral channels are arranged on the inner core; the starting points of the two outer spiral channels and the starting points of the two inner spiral channels are symmetrically arranged for 180 degrees respectively; two guide channels corresponding to a split-flow cone of the split-flow hole and used for connecting two sides of the split-flow cone with two outer spiral channels on the outer core are arranged on the outer core; and flow guide through holes communicated with the two inner spiral channels on the inner core are respectively formed in the tail ends of the two guide channels.
Owner:LIAONING UNIVERSITY OF TECHNOLOGY +1

Cell plate auxiliary transmission device with sintering furnace mesh belt

The invention provides a cell plate auxiliary transmission device with a sintering furnace mesh belt. The cell plate auxiliary transmission device comprises a sintering furnace mesh belt, synchronous driving belts, a guide plate, a revolving shaft, a fixed supporting plate, a fastening screw and roller wheels, wherein two roller wheels are arranged at the two ends of the revolving shaft; two synchronous driving belt are respectively sleeved on the roller wheels; the guide plate is arranged between the synchronous driving belts, and the width of the guide plate is equivalent to that of a cell plate; the import end of the guide plate is jointed with the tail end of the sintering furnace mesh belt; the upper end surface of the import end of the guide plate is close to the lower end surface of the cell plate, and the upper end surface of the export end of the guide plate is close to the upper end surfaces of the synchronous driving belts; the guide plate is fixed on the revolving shaft, the fixed supporting plate is arranged below the synchronous driving belts, and the revolving shaft is fixed on the fixed supporting plate. By using the cell plate auxiliary transmission device, the blocking and gathering phenomena of cell plates can be fundamentally eliminated, thereby ensuring the smooth transmission of cell plates and improving production efficiency and product quality.
Owner:EGING PHOTOVOLTAIC TECHNOLOGY CO LTD

Drop tip

InactiveUS20060093703A1Reduces and eliminates mixingEliminate scrappingFood shapingBiomedical engineeringMaterial supply
A drop tip is provided for conveying injection molding material from a molding material supply into a mold. The drop tip has a body including an internal bore and a drop passage extending from the internal bore. The internal bore has an arcuate lower end terminating in a gate to prevent retention of molten material therein.
Owner:PLASTIC ENG & TECHN SERVICES

Decimal Floating Point Mechanism and Process of Multiplication without Resultant Leading Zero Detection

A decimal multiplication mechanism for fixed and floating point computation in a computer having a coefficient mechanism without resulting leading zero detection (LZD) and process which assumes that the final product will be M+N digits in length and performs all calculations based on this assumption. Least significant digits that would be truncated are no longer stored, but retained as sticky information which is used to finalize the result product. Once the computation of the product is complete, a final check based on the examination of key bits observed during partial product accumulation is used to determine if the final product is truly M+N digits in length, or M+N−1 digits. If the latter is true, then corrective final product shifting is employed to obtain the proper result. This eliminates the need for dedicated leading zero detection hardware used to determine the number of significant digits in the final product. The corrective final product shifting also incorporates adjustments to the coefficient of the product when the product's exponent is at its extremes and the final product must be brought to be within the precision and range of a given format.
Owner:IBM CORP
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