43 results about "Core fragment" patented technology

The invention discloses a method for efficiently recovering active materials of positive poles in waste lithium batteries, which is mainly characterized by adding crushed electrical core fragments into hot water, stirring the mixture, and performing first vibration screening after the filtration and drying to separate most of an active material; dissolving aluminum foil through alkaline leaching after an oversize part is magnetically separated, adjusting the pH value of an alkaline leaching filtrate by dilute acid and ammonium bicarbonate solution, and recovering aluminum; performing second vibration screening after the filtration and drying to separate a residual powder material; and placing the oversize part into water for water cyclone separation, dumping to remove an upper-layer plastic diaphragm, then using dilute sulfuric acid and sodium thiosulfate solution to wash a copper sheet to ensure that carbon powder and active powder which are adhered to the copper sheet are loosened and fall off, making the powder float on an upper layer through cyclone separation after the washing, mixing the powder and the active powders obtained by two screenings, using NaOH solution to soak the mixture after the magnetic separation, calcining the alkali-leached active powder material after the filtration and drying, and taking the active powder material as active powder for subsequent treatment. The use of the method can ensure that the recovery rates of copper and aluminum in waste lithium ion batteries reach 98.5 percent and 97 percent respectively, and the recovery rate of the active materials is about 99 percent.

An electric pencil sharpener comprises a wasteful shaving prevention mechanism for separating the rotatable cutting blade from the pencil a pencil-core tip adjustment mechanism for adjusting the diameter of the shaved pencil-core tip, and a core fragment removal mechanism for removing any broken off pencil-core fragment remaining in the electric pencil sharpener. The wasteful shaving prevention mechanism includes the cutting blade, a cutter shaft and a plate and is structured to separate the cutting blade from the pencil when sharpening if finished. The pencil-core tip adjustment mechanism includes a pencil-core tip adjustment dial, a rotatable pencil-core tip adjustment screw, a gear shaft, a connecting rod, a plate and a stop. The core fragment removal mechanism includes a button, a gear shaft, a connecting rod, a plate and a stop. An electric pencil sharpener that further incorporates a pencil diameter adapter is also provided.

The invention discloses a novel MAR (matrix attachment region) core fragment-containing animal cell expression vector. The nucleotide base sequence of the MAR core fragment of the recombinant expression vector is as shown in SEQ ID No. 1, SEQ ID No.2 or SEQ ID No. 3. The expression vector disclosed by the invention can effectively increase the yield of protein in mammalian cells and reduce production cost.

The invention discloses a technology for recycling valuable metal from an electric core of a waste tertiary power battery. The technology comprises the following steps of (1) shearing and crushing theelectric core under the water protection condition, and enabling electrolyte to enter into water; (2) washing the crushed electric core fragments in a water tank, removing a diaphragm, and further washing to remove electrolyte residue; (3) filtering the electric core fragments after water washing, performing ball milling, and separating tertiary material and graphite from a copper coil and an aluminum coil; (4) enabling a screen net to screen the copper coil and the aluminum coil; performing gravity sorting on the matters under the screen by a rocking bed to remove graphite, so as to obtain tertiary alloy residue; (5) recycling the shearing, crushing and washing water for multiple times, separating out lithium by a precipitation method, and sending into a water treatment plant to treat and recycle. The technology has the advantage that the difference between physical properties of the tertiary material and other components in the power battery is utilized, the environment-friendly physical sorting technology is adopted, the usable components are gradually separated, and the electrolyte is simultaneously treated, so that all valuable metal elements in the tertiary power battery canbe recycled.

The invention relates to a core confirming method for the development degree of reservoir cracks. The method comprises the following steps: 1) jointing cores; 2) summarizing and recognizing the characteristics of natural cracks; 3) performing imaging logging calibration; 4) finally confirming the natural cracks; and 5) judging the development degree of the cracks. The invention is specific to the reservoir cracks; the natural cracks are confirmed according to two data of the core and imaging logging, so that the confirmation of the natural cracks is more objective; furthermore, the splicing resetting is performed on the core fragments according to the invention, so that the quantity statistics of the natural cracks of the core can more objectively reflect the quantity of practical reservoir cracks, especially, the reservoir with abnormal development of the cracks and serious core segment; the method has a better effect; besides, the development degree of reservoir cracks confirmed according to the invention can avoid the common industrial misunderstanding that a same crack is mistakenly recorded as multiple cracks under the influence of mutual cutting of the cracks.

The invention discloses a mytilus coruscus multi-drug resistance protein Abcc. The multi-drug resistance protein Abcc is a cloned gene, which is obtained by cloning a gene core fragment of mytilus coruscus Abcc by a gene cloning technology. The invention also discloses a novel marine biological pollution detection marker, which uses mytilus coruscus as a biological sample for detecting marine pollution, and uses the mytilus coruscus multi-drug resistance protein Abcc as a detection marker for marine pollution. The relative expression amount of a multi-drug resistance protein Abcc gene of the mytilus coruscus multi-drug resistance protein Abcc is the highest in digestive glands and gills, and a PCR reaction system for cloning can ensure the specificity of an amplification reaction and improve the PCR amplification efficiency. The detection marker provided by the invention has strong specificity, can directly take target cells or target molecules in organisms as reaction endpoints to carry out sensitive biological reactions at the molecular level, and has an early warning effect on marine pollutant exposure and toxicity effects.

The invention provides a process for culturing brownness resistant sweet potatoes utilizing gene engineering technology, which relates to the achievement of yam polyphenol oxidase gene core fragments and the process of cultivating brown trans-gene yam by employing antisense RNA technology, and the method comprises cloning polyphenol oxidase gene core fragment from yam, constructing plant highly effective antisense expression carrier, and leading into agrolbacterium and genetically transforming the yam.

The invention relates to a preparation method of a core fragment rIFN (interferon)-alpha1 of recombinant chicken IFN-alpha, which comprises the following steps that: chicken spleen RNA (ribonucleic acid) is extracted, and is subjected to reverse transcription into cDNA (complementary deoxyribonucleic acid), and the cDNA is used as a template; a nested PCR (polymerase chain reaction) method is adopted, firstly, an outer primer capable of amplifying the chicken full-length gene of IFN-alpha is used for the first round of amplification, and then a self-designed inner primer is used for amplifying corresponding subcloned IFN-alpha1 encoding gene to obtain the core fragment rIFN-alpha1 of the recombinant chicken IFN-alpha. For the core fragment rIFN-alpha1 of recombinant chicken IFN-alpha, the detection of the anti-Newcastle disease virus activity of chicken IFN-alpha1 on BHK-21 cells is carried out, indicating that the highest activity unit of the chicken rIFN-alpha1 is up to 4.32*103U.mg <-1>; and the detection of the anti-Newcastle disease virus activity of chicken IFN-alpha1 is carried out by utilizing SPF (specific pathogen free) chicken embryos cultured virus, indicating that the antiviral activity is higher.

The invention relates to a method for predicting the compressive strength of an argillaceous siltstone. The method comprises: step one, after taking out a rock core in a surveying hole, carrying out testing of a transverse wave velocity Vs and a longitudinal wave velocity Vp timely in the core in the hole and conveying the taken core to a lab timely to carry out indoor core acoustic wave testing;step two, observing comparison of longitudinal wave velocities Vp and Vp' and transverse wave velocities Vs and Vs' of the core in a same depth zone in the surveying hole and the indoor space; step three, carrying out compression testing on the core; step four, carrying out sediment content testing on core fragments after compression resistance; step five, analyzing the correlation between the sediment content and the compressive strength fr and analyzing correlation of the compressive strength, the transverse wave velocity Vs and the longitudinal wave velocity Vp of the core; step six, makingcorresponding relation maps of the transverse wave velocity Vs, the longitudinal wave velocity Vp, the sediment content and the compressive strength fr respectively; step seven, establishing a prediction formula fprediction; and step eight, establishing a corrected compressive strength correction formula fcorrection.

A ultrastrong fusion promoter oms4, its expression vector and its application in transgenic tobacco are disclosed. Said oms 4 promoter is constructed with 4 copied ocs enhensers by cyclically forward linking them to the core fragment of mas promoter. The oms4 promoter can be used to replace the 35S promoter in expression vector pBI121 of plant for constructing pOMS4. Its advantage is high expression level of exogenous gene gus in tobacco (increased by 23-47 times).