Abstract: A miniature combined multi-axis force sensor structure includes a sensor body, a first shell and a second shell, two horizontal main beams and two vertical main beams are arranged on the periphery of an inner round platform in a cross shape, tail ends of the horizontal main beams and the vertical main beams are each connected to a vertical floating beam, and the horizontal floating beams consist of two thin-walled cambered beams; two ends of the horizontal floating beam are each connected to an outer round platform by means of an annular platform; the sensor body is arranged between the first shell and the second shell; strain gauges are stuck on the horizontal main beams and the vertical main beams to form two Wheatstone bridges; and when force/torque acts on the cross beam, the sensor deforms, and the resistance value of strain gauge at corresponding position changes.

Abstract: A miniature combined multi-axis force sensor structure includes a sensor body, a first shell and a second shell, two horizontal main beams and two vertical main beams are arranged on the periphery of an inner round platform in a cross shape, tail ends of the horizontal main beams and the vertical main beams are each connected to a vertical floating beam, and the horizontal floating beams consist of two thin-walled cambered beams; two ends of the horizontal floating beam are each connected to an outer round platform by means of an annular platform; the sensor body is arranged between the first shell and the second shell; strain gauges are stuck on the horizontal main beams and the vertical main beams to form two Wheatstone bridges; and when force/torque acts on the cross beam, the sensor deforms, and the resistance value of strain gauge at corresponding position changes.

Abstract: The present invention “A Molecular marker Nicotine Associated SNP 1 for identifying high or nicotine content of tobacco and its kit as well as use thereof” belongs to field of molecular biology technology. The molecular marker Nicotine Associated SNP 1 is a SNP Nitab4.5_0002539:95304 A/G at base No. 95304 of Genomic segment No. 0002539 in tobacco genome version of Nitab v4.5 Genome Scaffolds Edwards2017. The present invention can accurately identify and screen tobacco germplasm resources with high or low nicotine content, and the screened tobacco can be directly used for breeding new tobacco varieties without transgenic methods. At the same time, gene sequence where the SNP site is located can also significantly activate promoters of key enzyme genes in nicotine synthesis pathway.

Abstract: A method for measuring and analyzing the productivity of Angora rabbit is provided. Firstly, the Angora rabbit to be tested are simultaneously sheared at the age of 18 weeks, and are reared in a single cage to the age of 29 weeks according to standard conditions for test, and the individual consumption of Angora rabbit during the test period is recorded; secondly, the wool samples were sheared from the middle and upper part of the body side of the Angora rabbit with an electric wool clippers. The weight of the Angora rabbit, the weight of the wool sample, and the length of the wool fiber were measured and bagged for recording; in the third step, the wool fiber diameter of each wool sample was measured by fiber projection method; in the fourth step, the measured values were substituted into the given estimation formula.

Abstract: A method for measuring and analyzing the productivity of Angora rabbit is provided. Firstly, the Angora rabbit to be tested are simultaneously sheared at the age of 18 weeks, and are reared in a single cage to the age of 29 weeks according to standard conditions for test, and the individual consumption of Angora rabbit during the test period is recorded; secondly, the wool samples were sheared from the middle and upper part of the body side of the Angora rabbit with an electric wool clippers. The weight of the Angora rabbit, the weight of the wool sample, and the length of the wool fiber were measured and bagged for recording; in the third step, the wool fiber diameter of each wool sample was measured by fiber projection method; in the fourth step, the measured values were substituted into the given estimation formula.

Abstract: The present disclosure relates to a set of molecular markers. The molecular markers include at least one selected from the group consisting of a mutant of a frizzled class receptor 3 gene (FZD3 gene) and a mutant of a keratin 26 gene (KRT26 gene), where the FZD3 gene is as shown in SEQ ID NO: 1, and the KRT26 gene is as shown in SEQ ID NO: 2; the mutant of the FZD3 gene is formed by mutation of a base T at position 41019916 of a FZD3 gene locus to a base C, and the mutant of the KRT26 gene is formed by mutation of a base G at position 41842284 of a KRT26 gene locus to a base A and/or formed by mutation of a base G at position 41842481 of the KRT26 gene locus to a base C.

Abstract: The present disclosure relates to the technical field of molecular marker breeding of rabbits, in particular to a molecular marker related to a wool yield of a long-haired rabbit and use thereof in breeding. The molecular marker includes a mutant of a keratin 26 gene (KRT26 gene), where the KRT26 gene is as shown in SEQ ID NO: 1, the mutant of the KRT26 gene is formed by mutation of a base G at position 41844263 of a KRT26 gene locus to a base A. In the present disclosure, the wool yield trait of the long-haired rabbit and the KRT26 gene are subjected to association study and population verification, and it is found that an individual long-haired rabbit with an allele G has a higher wool yield, with an additive gene effect of 15.59 g; the base substitution can control an overall genetic variation of the wool yield by 1.51%.

Abstract: The invention provides a selecting method for domestic rabbits with a agouti/Belgian hair color based on homozygous genotype selection. The purification method is applicable to purification of various domestic rabbits with the agouti/Belgian hair color. The method includes the following steps: firstly, selecting the domestic rabbits with a hair color phenotype which is the agouti/Belgian hair color; then detecting an ASIP gene, a MC1R gene and a TYR gene at the same time by utilizing a first primer set, a second primer set and a third primer set; screening the domestic rabbits with genotypes of AA (corresponding to the ASIP gene), EE (corresponding to the MC1R gene) and CC (corresponding to the TYR gene). The domestic rabbits with the genotype of AAEECC, which are obtained by the screening method of the invention, are agouti/Belgian hair color homozygotes and the recessive white gene is eliminated.

Abstract: On each draft element of a ring spinning frame, two pieces of short-staple roving from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel in parallel, two pieces of filament are fed from the back of the front roller, and combine with two pieces of roving at front jaw respectively. The drafted two pieces of roving and filament are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin to produce yarn. Based on the relative position of the two pieces of roving and two pieces of filament, different yarns can be produced. Furthermore, multi-component yarn, such as core structure, wrapped structure, strand-like structure, can be produced on a ring spinning frame. The structure of yarn can be precisely determined. Special fiber yarn can be produced on traditional spinning frame.

Abstract: On each draft element of a ring spinning frame, two pieces of short-staple roving from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel in parallel, two pieces of filament are fed from the back of the front roller, and combine with two pieces of roving at front jaw respectively. The drafted two pieces of roving and filament are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin to produce yarn. Based on the relative position of the two pieces of roving and two pieces of filament, different yarns can be produced. Furthermore, multi-component yarn, such as core structure, wrapped structure, strand-like structure, can be produced on a ring spinning frame. The structure of yarn can be precisely determined. Special fiber yarn can be produced on traditional spinning frame.