Abstract: A brazing joint, a brazing method, and a device for promoting solder rheology and gas overflow are provided. The brazing joint includes a first base metal, a second base metal, and a brazing seam located therebetween. The brazing seam is formed by filling a solder in a gap formed by welding surfaces of the first and the second base metal and melting it to connect the first and the second base metal. The brazing seam is a concave-shaped brazing seam. The gap defines a first distance and a second distance, the first distance is located at an edge of the gap, the second distance is located at the edge or an inside of the gap, the first distance is greater than the second distance, and a curved surface is formed between the location of the first distance and the location of the second distance for transition.

Abstract: The invention relates to a GDSL lipase, genetically-engineered bacteria and an application thereof. The GDSL lipase is derived from Streptomyces diastaticus CS1801 and its amino acid sequence is as shown in SEQ ID NO.2. After construction of a genetically-engineered bacterium strain, a GDSL lipase is generated through fermentation. Through this enzyme, vitamin A and palmitic acid are converted to produce vitamin A palmitate. The content of the vitamin A palmitate obtained from the conversion is 16.35 mg/L at most. The conversion efficiency is 81.75% at most. This lipase provides a new path to synthesize vitamin A palmitate by the enzymatic method and has an important application prospect.

Abstract: The present invention relates to a lipase-producing strain and application thereof. The strain is classified and named Bacillus subtilis CS1802, with a preservation number of CCTCC NO: M2018262. The strain can be used to produce vitamin A palmitate through whole-cell transformation of vitamin A and palmitic acid. The Bacillus subtilis CS1802 of the present invention is derived from traditional natural fermented food and is a microorganism generally recognized as safe. The strain can be easily cultured and preserved. The highest content of vitamin A palmitate obtained through whole-cell transformation of vitamin A and palmitic acid is 15.35 mg/L. The highest transformation efficiency is 76.75%. The strain provides a new path for enzymatic synthesis of vitamin A palmitate and has important application prospects.

Abstract: A battery State of Health estimation method based on a standard sample and a dual-embedded decoupling includes the steps of extracting significant characteristic peaks of the standard sample, mechanism parameter calibration of the standard sample, and on-line State of Health estimation of the test battery. The battery State of Health estimation method expounds the dual coupling relationship between temperature and aging on the characteristic peak voltage of Incremental Capacity curve from the perspective of impedance characteristic mechanism analysis, and proposes a method eliminating the voltage deviation caused by the most temperature-sensitive charge transfer resistance based on the “standard sample” to realize the decoupling of the first layer.

Abstract: The present invention relates to a strain for producing chitinase and application thereof. The class of the strain is named Streptomyces diastaticus CS1801 and the preservation number thereof is CCTCC NO: M2018263. The Streptomyces diastaticus CS1801 of the present invention is derived from naturally fermented prawn paste. By fermentation of prawns, the enzyme activity of the chitosan is as high as 57.3 U/L and the content of chitooligosaccharides is 0.58 mol/L. The present invention provides a new method for producing chitooligosaccharides and has a good application prospect.

Abstract: An on-line State of Health estimation method of a battery in a wide temperature range based on “standardized temperature” includes: calculating battery Incremental Capacity curve of a battery, establishing a quantitative relationship between the voltage shift of the temperature-sensitive feature point and the temperature of a standard battery, standardized transformation of Incremental Capacity curves at different temperatures, establishing a quantitative relationship between the transformed height of the capacity-sensitive feature point and the State of Health based on a BOX-COX transformation. The BOX-COX transformation is expressed as y k ( ? ) = { y k ? - 1 ? ? ? 0 ln ? ? y k ? = 0 . An maximum likelihood function is used to calculate the optimal ?, and the transformed height of the capacity-sensitive feature point y can be acquired.

Abstract: A battery State of Health estimation method based on a standard sample and a dual-embedded decoupling includes the steps of extracting significant characteristic peaks of the standard sample, mechanism parameter calibration of the standard sample, and on-line State of Health estimation of the test battery. The battery State of Health estimation method expounds the dual coupling relationship between temperature and aging on the characteristic peak voltage of Incremental Capacity curve from the perspective of impedance characteristic mechanism analysis, and proposes a method eliminating the voltage deviation caused by the most temperature-sensitive charge transfer resistance based on the “standard sample” to realize the decoupling of the first layer.

Abstract: An on-line State of Health estimation method of a battery in a wide temperature range based on “standardized temperature” includes: calculating battery Incremental Capacity curve of a battery, establishing a quantitative relationship between the voltage shift of the temperature-sensitive feature point and the temperature of a standard battery, standardized transformation of Incremental Capacity curves at different temperatures, establishing a quantitative relationship between the transformed height of the capacity-sensitive feature point and the State of Health based on a BOX-COX transformation. The BOX-COX transformation is expressed as y k ( ? ) = { y k ? - 1 ? ? ? 0 ln ? ? y k ? = 0 . An maximum likelihood function is used to calculate the optimal ?, and the transformed height of the capacity-sensitive feature point y can be acquired.

Abstract: A mutant acetyl-CoA carboxylase (ACC) protein, a nucleic acid encoding the mutant ACC protein, and use thereof are provided. Specifically, compared with a parent ACC protein, the mutant ACC protein has mutations at amino acids corresponding to amino acid 1,879 and/or amino acid 2,186 of SEQ ID NO: 1. An ACC-mutated plant shows high herbicide resistance, and thus the present disclosure has very promising application prospects in the cultivation of an herbicide-resistant plant.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: The invention relates to a GDSL lipase, genetically-engineered bacteria and an application thereof. The GDSL lipase is derived from Streptomyces diastaticus CS1801 and its amino acid sequence is as shown in SEQ ID NO.2. After construction of a genetically-engineered bacterium strain, a GDSL lipase is generated through fermentation. Through this enzyme, vitamin A and palmitic acid are converted to produce vitamin A palmitate. The content of the vitamin A palmitate obtained from the conversion is 16.35 mg/L at most. The conversion efficiency is 81.75% at most. This lipase provides a new path to synthesize vitamin A palmitate by the enzymatic method and has an important application prospect.

Abstract: Disclosed is a kit for detecting content of fluoride ions in a microsample, including: at least one 96-well plate, reagent A, reagent B, reagent C, reagent D, reagent E and a fluoride standard solution having a concentration of 2.5 mg/L. The kit can be used to effectively overcome the uncertainties in the existing methods for detecting fluoride ions, and also involves rapid and convenient operation. Moreover, this method involves simple and rapid operation, the use of a small amount of a sample and simultaneous detection of multiple samples. This kit provides a more standardized detection to lower the human error, thereby allowing for a more reliable result and for a suitable application in the on-site detection of content of fluoride ions in various environments such as in water quality engineering or in the laboratory.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: An apparatus and method for improved data speeds for wireless device are discloses. The wireless device locates at a first location within a first cell, and detects a failure to acquire SIB of the first cell. A waiting period is started in response to the failure to prohibit selecting the first cell during the waiting period. After determining that the wireless device has left a vicinity of the first location in the first cell, the wireless device connects to the telecommunication network via the first cell before an expiration of the waiting period. According to the disclosure, the wireless device does not need to wait for the expiration of the waiting period before recom1ecting to the first cell. The wireless device does not need to connect to a lower data rate cell during the waiting period when the first cell is available. The user experience is improved.

Abstract: A compound having the formula (I): (I) is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A method for detecting content of fluoride ions in a microsample, including: (1) preparing reagents; (2) preparing a detecting liquid; (3) loading samples; and (4) detecting the content of fluoride ions. The method of the invention can effectively overcome unstable factors in the prior art. Moreover, this method involves simple and rapid operation, the use of a small amount of a sample and simultaneous detection of multiple samples. The steps are standardized to reduce human error, allowing for more reliable results.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: The present invention relates to a strain for producing chitinase and application thereof. The class of the strain is named Streptomyces diastaticus CS1801 and the preservation number thereof is CCTCC NO: M2018263. The Streptomyces diastaticus CS1801 of the present invention is derived from naturally fermented prawn paste. By fermentation of prawns, the enzyme activity of the chitosan is as high as 57.3 U/L and the content of chitooligosaccharides is 0.58 mol/L. The present invention provides a new method for producing chitooligosaccharides and has a good application prospect.