6results about How to "Good synthesis effect" patented technology

The embodiment of the application provides an image synthesis method, device and computer readable medium, which adopts a corresponding manner to respectively acquire background feature information, text feature information, mask feature information, stacking feature information and target feature information in a target image and a background image, then performs feature fusion processing on the above feature information to acquire fusion feature information, and further generates a final synthesis image according to the fusion feature information. Since different feature information for generating the fusion feature information contains specific features in different aspects, when the final synthesis image is reconstructed according to the fusion feature information, the synthesized image can be more beautiful, natural and better in synthesis effect.

This invention discloses a high-mannitol-producing strain of *Limosilactobacillus fermentum* and its applications, belonging to the field of biosynthesis technology. This strain, named *Limosilactobacillus fermentum* PY20 (GDMCC NO: 67749), was obtained from naturally squeezed persimmon juice. It exhibits excellent mannitol synthesis ability in fructose-based fermentation, growing and converting mannitol in a medium containing 30–60 g / L fructose with a conversion rate exceeding 69.77%. This invention overexpresses the endogenous mannitol dehydrogenase gene of PY20 in this bacterium. The resulting engineered bacterium grows and converts mannitol in a medium containing 30–60 g / L fructose with an efficiency exceeding 78.13%, representing an increase of over 11% in both mannitol yield and conversion efficiency compared to PY20, and demonstrating good genetic stability.

The invention relates to an image generation method and apparatus, an electronic device, a storage medium and a program product. The method comprises the steps of obtaining a preset object image including a to-be-synthesized object and a to-be-processed image; inputting the to-be-processed image and a preset object image into a preset image generation model, and generating a target synthetic image on the basis of performing mapping correction on the position information of the area where the to-be-synthesized object is located in the preset object image based on the position information of the to-be-synthesized area in the to-be-processed image, the target synthetic image is an image after the to-be-synthesized object is synthesized to the to-be-synthesized area in the to-be-processed image. By using the embodiment of the invention, the model can be helped to pay attention to high-frequency details such as texture details and edge contours of the object to be synthesized, the detail fidelity is improved, the detail reduction degree in the synthesized image can be further improved, and the image synthesis effect is effectively improved.

The application belongs to the technical field of organic synthesis, and particularly relates to a preparation method of a chiral dihydroquinolone compound. The application utilizes N-heterocyclic carbene (NHC) as a catalyst, and generates the chiral dihydroquinolone through a nitrogen hetero-diene Diels-Alder reaction of a chloroaldehyde and an azo-ortho-benzoquinone precursor under the action of NHC and an alkaline reagent. The preparation method of the application does not need to use a transition metal as a catalyst, can perform a reaction under relatively mild conditions, and has the advantages of green environmental protection, low cost, wide substrate selectivity, mild reaction conditions and the like. In addition, by optimizing the reaction conditions of the preparation method, the product has high yield, high purity, unique cis selectivity and excellent enantioselectivity. The application provides a new route and new idea for the chiral dihydroquinolone compound, can play an important role in the fields of drug intermediates and the like, and has good application value and potential.

This invention provides an L-homoserine-producing strain, its construction method, and its applications. The strain does not contain plasmids. E.coli W3110, as a chassis strain, had the relA and thrB genes knocked out, and heterologously expressed genes derived from... Clostridium acetobutylicum The gapC gene and the aspB gene derived from Bacillus subtilis were overexpressed, along with ppc, asd, and thrA. fbr ,rhtA,pntAB,spoT fbr Genes; the strain described above can effectively improve the L-homoserine synthesis efficiency by knocking out genes of the L-homoserine degradation pathway, enhancing the expression of key enzymes in the pathway, optimizing the L-homoserine transport system, increasing the reducing power NADPH content, and enhancing the ability to withstand amino acid starvation. It is genetically stable, requires no addition of resistance substances, has high acid production efficiency, and has good L-homoserine synthesis capacity.

The application relates to a preparation method of copper powder with adjustable particle size, a certain amount of copper sulfate and functionalized ionic liquid are weighed and added into a certain volume of solvent I, stirring and dissolving to obtain solution A; a certain amount of a reducing agent is weighed and added into a certain volume of solvent II, stirring and dissolving to obtain solution B; solution A and solution B are mixed and stirred at a temperature of 70-90 DEG C for 2h; then centrifugal separation, washing and vacuum drying are carried out to obtain copper powder; the solvent I and the solvent II are the same and can be selected from one or more of distilled water, ethylene glycol, propylene glycol and glycerol. The application has the advantages of simple process, green environmental protection and easy amplification; the carboxyl functionalized ionic liquid is adopted, the oxidation resistance of the copper powder is improved; the particle size of the copper powder can be adjusted within 200nm to 5.2mu m by changing the type, concentration and reaction temperature of the ionic liquid, the prepared copper powder has uniform particle size distribution, good dispersity, high crystallinity, good conductivity and good oxidation resistance.