5results about How to "Excellent thermal stability" patented technology

The application discloses a screw motor stator-rotor linear optimization method for directional drilling, relates to the technical field of directional drilling of oil and natural gas, and comprises the following steps: according to the design requirements of a screw motor for directional drilling, design parameters of an eccentricity, a rotor head number, a stator head number, a base circle diameter and a theoretical equidistance radius are determined, and an initial linear data set containing discrete data points is generated based on an internal or external cycloid equation; a non-uniform rational B-spline method is used to perform curve reconstruction on the initial linear data set, local fairing treatment is performed on regions with curvature mutations by adjusting control point weight factors and node vectors of the non-uniform rational B-spline curve, and a smooth linear parameter model is generated; and based on the smooth linear parameter model, a thermodynamic coupling simulation model based on a rubber viscoelastic constitutive relation is established to simulate periodic plunger movement of the screw motor under a rated working condition.

This invention discloses a three-dimensional integrated packaging structure and fabrication method of a glass core TGV panel with embedded heterogeneous chips. The upper and lower redistribution layers of the glass core are vertically interconnected through several metal vias. The glass core layer is provided with dry cavities, and several electronic components are embedded in the glass core layer along the Z-axis through these cavities. The electronic components are horizontally wired and transmit signals through the upper and lower redistribution layers, and are electrically connected to external circuits through the upper and lower redistribution layers and metal vias. This invention integrates the cost advantages of large-size glass panels, the performance advantages of glass materials, the vertical interconnection advantages of TGV, the density advantages of embedded packaging, and thermal management technology. It addresses the shortcomings of current packaging technologies in terms of high performance, high integration, low cost, and excellent heat dissipation, providing a system-level packaging solution with superior overall performance. This solution can improve system performance, heat dissipation performance, and integration, while reducing costs.

This invention relates to the field of food antibacterial and preservative technology, specifically to a plant lactobacillus 9, a compound preservative containing plant lactobacillus 9, and their applications. The plant lactobacillus 9 is produced from *Lactobacillus plantarum* with the preservation number CCTCC NO: M 2026808. Lactobacillus plantarum The amino acid sequence of this plant lactobacillus 9 is N-Thr-Asp-Gly-Ala-Ala-Phe-OH. This plant lactobacillus 9 exhibits strong antibacterial activity against Listeria monocytogenes, Bacillus subtilis, Micrococcus luteus, methicillin-resistant Staphylococcus aureus, Escherichia coli, Pseudomonas fluorescens, Salmonella typhimurium, and Pseudomonas aeruginosa, and demonstrates outstanding stability. It is a safe and reliable biological preservative. Its effectiveness is significantly enhanced when combined with chitosan, making it a potential alternative to chemical preservatives for controlling foodborne pathogens in the agricultural and food industries and extending the shelf life of meat and meat products.

The application belongs to the technical field of enzyme engineering, and particularly relates to a beta-1,3-glycosyltransferase mutant and application thereof in catalyzing synthesis of rebaudioside M. The beta-1,3-glycosyltransferase mutant is obtained by mutating the beta-1,3-glycosyltransferase with an amino acid sequence shown in SEQ ID NO. 1 by at least one mutation, i.e. mutating isoleucine at the 14th position into alanine; and / or mutating asparagine at the 50th position into alanine; and / or mutating isoleucine at the 92nd position into leucine; and / or mutating leucine at the 141st position into cysteine or isoleucine. The mutant is applied to catalyzing synthesis of rebaudioside M, and is significantly superior to the wild-type enzyme in catalytic efficiency and thermal stability.

This invention relates to the field of back-contact batteries, specifically to a back-contact battery, its fabrication method, and its applications. The back-contact battery includes: a silicon substrate and a composite passivation layer stacked on the back side of the silicon substrate; a main grid and a fine grid are disposed on the composite passivation layer; an overlapping platform is provided at the end of the positive electrode fine grid connected to the positive electrode main grid, and the overlapping platform forms a surface contact with the positive electrode main grid; an overlapping platform is provided at the end of the negative electrode fine grid connected to the negative electrode main grid, and the overlapping platform forms a surface contact with the negative electrode main grid. By employing an overlapping platform at the end of the fine grid to form an overlapping connection with the main grid, the back-contact battery avoids the damage to the composite passivation layer below the main grid caused by traditional burn-through electrode structures, significantly improving the integrity and passivation effect of the passivation layer, greatly reducing carrier recombination losses, and enabling the battery to achieve higher open-circuit voltage and conversion efficiency.