46results about How to "Reduce Potential Contamination" patented technology

Synthetic surfaces capable of supporting culture of undifferentiated human embryonic stem cells in a chemically defined medium include a swellable (meth)acrylate layer and a peptide conjugated to the swellable (meth)acrylate layer. The swellable (meth)acrylate layer may be formed by polymerizing monomers in a composition that includes hydroxyethyl methacrylate, 2-carboxyehylacrylate, and tetra(ethylene glycol) dimethacrylate. The conjugated peptide may include an amino acid sequence of XaanProGlnValThrArgGlyAspValPheThrMetPro, where n is an integer from 0 to 3 and where Xaa is any amino acid. Further, disclosed herein is a swellable (meth)acrylate synthetic surface which can be sterilized by gamma irradiation.

A laminated foam mop head which includes a foam block having a top surface, a bottom surface, and two side surfaces, a fabric material laminated to the bottom and side surfaces of the foam block, and a bracket attached to the top surface of the foam block such that the bottom and side surfaces of the foam block are drawn upward and inward to form a mop head having an elliptical shaped cross section and the top surface of the foam block is pushed inward and not exposed.

A laminated flat mop head which includes a flat foam layer laminated with a fabric material without using glue or adhesive.

The invention is a method of producing green controlled release multi-nutrient fertilizer, or a nutrient structural controlled release fertilizer producing method, using high-nitrogen organic compound, urea transformed compound, and nitrogen phosphor potassium inorganic compound as main body, assorted with potassic fertilizer and granulating agent, and obtaining it by a series of process steps. It contains the nutrients: N, P, K, Ca, S, B, etc. where the N-P-K nutrient accounts for 30-35%, the medium trace element nutrient accounts for 5%-10%, the release period of the nutrients is over 70 days, the ratio of organic to inorganic nitrogen nutrients is 1 : 1, the soluble organic nitrogen accounts for 50% of total organic nitrogen, the dissolved P in the weak acid of P nutrient and organic P account for 50% of total P, and it can produce high-N high-P low-K type, low-N high-P high-K type, and balanced N-P-K type controlled release special fertilizer series according to plant varieties.

The invention discloses a production method of organic rich selenium cowpea, and relates to the technical field of agriculture; the method comprises the following steps: (1) sowing and seedling raising; (2) making a rich selenium fertilizer; (3) preparing the soil and applying the rich selenium fertilizer; (4) field planting; (5) field management; and (6) harvesting. The production method of organic rich selenium cowpea achieves the purpose of normal growth of the entire growth and development period of cowpea by applying the fertilizer once without applying other chemical fertilizers, thus saving the labor cost of applying fertilizers for many times, achieving the purpose of saving the labor cost as well as producing rich selenium cowpeas, and further reducing the dosage of the selenium fertilizer, reducing the potential environment pollution by applying the selenium too much; and the method has a wide application foreground.

Synthetic surfaces suitable for culturing stem cell derived cardiomyocytes contain acrylate polymers formed from one or more acrylate monomers. The acrylate surfaces, in many cases, are suitable for culturing stem cell derived cardiomyocytes in chemically defined media.

Synthetic surfaces capable of supporting culture of undifferentiated human embryonic stem cells in a chemically defined medium include a swellable (meth)acrylate layer and a peptide conjugated to the swellable (meth)acrylate layer. The swellable (meth)acrylate layer may be formed by polymerizing monomers in a composition that includes hydroxyethyl methacrylate, 2-carboxyehylacrylate, and tetra(ethylene glycol) dimethacrylate. The conjugated peptide may include an amino acid sequence of XaanProGlnValThrArgGlyAspValPheThrMetPro, where n is an integer from 0 to 3 and where Xaa is any amino acid. Further, disclosed herein is a swellable (meth)acrylate synthetic surface which can be sterilized by gamma irradiation.

A laminated flat mop head which includes a flat foam layer laminated with a fabric material without using glue or adhesive.

Synthetic surfaces suitable for culturing stem cell derived oligodendrocyte progenitor cells contain acrylate polymers formed from one or more acrylate monomers. The acrylate surfaces, in many cases, are suitable for culturing stem cell derived oligodendrocyte progenitor cells in chemically defined media.

This invention provides a composition of insulating fluid and process for the preparation thereof that mainly contains alkyl benzenes. In addition to alkyl benzenes, the composition also contains an antioxidant, an antifoaming agent, a pour point dispersant, a corrosion inhibitor and a detergent-dispersant additive. The product of this invention has utility as an insulating fluid in electrical installations such as transformer.

The present invention is directed to a wafer holder and a related wafer conveyor system. The wafer holder holds a wafer and moves horizontally within a chamber. A contact area between the wafer and the wafer holder is reduced, and potential contaminants generated by ear between components of the wafer holder are trapped by an airtight cover. Since the wafer holder moves horizontally while being fixed to a guide rail, the wafer conveyor system reduces friction between the guide rail and the wafer holder.

The invention is a method of producing green controlled release multi-nutrient fertilizer, or a nutrient structural controlled release fertilizer producing method, using high-nitrogen organic compound, urea transformed compound, and nitrogen phosphor potassium inorganic compound as main body, assorted with potassic fertilizer and granulating agent, and obtaining it by a series of process steps. It contains the nutrients: N, P, K, Ca, S, B, etc. where the N-P-K nutrient accounts for 30-35%, the medium trace element nutrient accounts for 5%-10%, the release period of the nutrients is over 70 days, the ratio of organic to inorganic nitrogen nutrients is 1 : 1, the soluble organic nitrogen accounts for 50% of total organic nitrogen, the dissolved P in the weak acid of P nutrient and organic P account for 50% of total P, and it can produce high-N high-P low-K type, low-N high-P high-K type, and balanced N-P-K type controlled release special fertilizer series according to plant varieties.

The invention relates to a sampling system for a liquid cathode glow discharge spectrometer. The sampling system comprises a micro-plasma induced steam generator unit and a connecting unit for connecting the liquid cathode glow discharge spectrometer and the micro-plasma induced steam generator unit. The micro-plasma induced steam generator unit induces a sample solution to be detected to generate steam based on liquid cathode glow discharge micro-plasma; the connecting unit is used for conveying mixed gas of to-be-detected metal ion steam generated by the micro-plasma induced steam generator unit and carrier gas to a hollow anode of the liquid cathode glow discharge spectrometer through the connecting unit, and the mixed gas enters a glow discharge area and is excited to generate a characteristic emission spectral line. The sampling system based on atmospheric pressure liquid cathode glow discharge micro plasma induced steam generation is used for realizing gas sampling of SCGD-OES.

The present invention provides a composition of hydraulic fluid that mainly contains alkyl benzenes. In addition to alkyl benzenes, the composition also contains an antioxidant, an antifoaming agent, a pour point dispersant, a corrosion inhibitor and a detergent-dispersant additive, an extreme pressure additive, a lubrication additives, comprising of the following steps (I) removing of insoluble matter from the base stock, (II) tailoring the base stock by vacuum distillation and blending, (IV) removing the oxidized matters by adsorption, (V) addition of performance additives and homogenizing the mixture. The product of this invention has utility as an general purpose hydraulic fluid.

The invention discloses an iron-like concentrate and a preparation method thereof. The method comprises the steps of dividing nickel-containing residual ore into magnesia ore and ferrite ore; performing leaching treatment on the ferrite ore by utilizing sulfuric acid at the temperature of 95-100 DEG C to obtain a leaching solution containing ferric sulfate; filtering the leaching solution containing the ferric sulfate to obtain first high-silicon filter residue and first filtrate; performing first neutralization treatment on the first filtrate by utilizing the magnesia ore; filtering the first filtrate after the first neutralization treatment so as to produce second high-silicon filter residue and second filtrate; performing second neutralization treatment on the second filtrate by utilizing an alkaline neutralizing reagent at the temperature of 95-105 DEG C, filtering and washing to obtain a precipitate containing iron compounds; performing alkaline washing on the iron compounds by utilizing an alkaline reagent at the temperature of 85-90 DEG C, and then drying to obtain a hematite-like concentrate and a solution containing nickel and cobalt. Through the method, valuable metals in the nickel-containing residual ore can be effectively recovered.

The invention relates to a dispensing device (10) for feeding granular material. In one embodiment, the invention provides a dispensing device (10) comprising a top cover (30) having a cover (32) and a rim (34), said cover having a An attachment mechanism (50) on a portion of the surface, the rim (34) is hingedly attached to the lid and includes a gripping device (60) constructed and arranged to retain a spoon (20). The scoop may be releasably attached to the lid and rim of the top cover in a variety of ways.

A laminated flat mop head which includes a flat foam layer laminated with a fabric material without using glue or adhesive.

The present invention is directed to sample test cards having an increased sample well capacity for analyzing biological or other test samples. In one embodiment, the sample test cards of the present invention comprise one or more fluid over-flow reservoirs, wherein the over-flow reservoirs are operatively connected to a distribution channel by a fluid over-flow channel. In another embodiment, the sample test cards may comprise a plurality of flow reservoirs operable to trap air thereby reducing and / or preventing well-to-well contamination. The test card of this invention may comprise from 80 to 140 individual sample wells, for example, in a test card sample test cards of the present invention have a generally rectangular shape sample test card having dimensions of from about 90 to about 95 mm in width, from about 55 to about 60 mm in height and from about 4 to about 5 mm in thickness.