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[Objective] To improve the design efficiency of the mechanical structure of the rotor system of a rubber roller husker. [Methods] An auxiliary calculation system for the rotor system design parameters of a rubber roller husker （RRHRSPD） that can be independently installed and operated under the Windows system was developed using VB and Matlab platforms. Based on the equivalent design method and the traditional mechanical design method, the coupling relationships among the technological parameters, dynamic parameters and structural parameters of the husker were established, and the calculation principle of the structural parameters of the rotor system was also explored. VB was used to develop the software operation interface and to quickly call the Matlab dynamic link library, which formed the core computing mechanism of the system, and the system was packaged and released. [Results] A set of auxiliary calculation system for structural parameters of the rotor system of rubber roller husker was developed. [Conclusion] The calculation results of the system are accurate and reliable, which can be used not only for the design and calculation of the rotor system structure of the rubber roller husker, but also for the virtual test platform for the performance analysis of the rubber roller husker.

Objective·To evaluate the effectiveness of the tele-rehabilitation program based on the smart wearable device BPMpathway in patients after total knee arthroplasty (TKA).Methods·Convenience sampling method was used to select patients with knee osteoarthritis after TKA admitted to both the Department of Orthopedics in the Fourth Affiliated Hospital of Soochow University (Suzhou Dushu Lake Hospital) and The First Affiliated Hospital of Soochow University, from April 2021 to December 2022, as the study population. According to the sequence of the patients′ admissions, patients with an odd hospitalization number were allocated to the control group while those with an even number to the intervention group. The control group received the routine home-based rehabilitation training program, while the intervention group was additionally subjected to the tele-rehabilitation program based on the BPMpathway. At baseline, and 1 month, 3 months and 6 months after TKA, the two groups of patients were evaluated by the compliance scale of functional exercise for orthopedic patients, the Hospital for Special Surgery Scale (HSS), and 36-item Short Form Health Survey (SF-36), while the knee joint motion of the patients was measured.Results·One hundred and ten patients with knee osteoarthritis after TKA were finally enrolled, including 56 patients in the control group and 54 patients in the intervention group. There were no statistically significant differences in the general information between the two groups. The differences in knee range of motion, HSS score, and SF-36 score between the two groups at baseline were not statistically significant. Repeated measurement variance analysis showed that the between-group effect, time effect and interaction effect of knee range of motion, functional exercise compliance score, HSS score and SF-36 total score were statistically significant in both groups (all P

Objective： Explore the effects of vibration mill's vibration mass on superfine grinding performance of wheat bran. Methods： A series of vibration impact grinding experiments of wheat bran was carried out by adjusting the grinding medium mass and wheat bran mass, respectively. Results： When the wheat bran mass was unchanged, the yield of wheat bran superfine powder showed a non-linear characteristic of first increasing and then decreasing with the increase of the quality of the grinding medium, and the maximum difference rate reached 123.53%. The quality of wheat bran micro powder also increased firstly and then decreased with the increase of grinding medium mass. However, when the grinding medium mass was unchanged, the yield of wheat bran superfine powder showed characteristic of first decreasing and then increasing with the increase of the quality of the grinding medium, and the maximum difference rate reacheds 588.69%. With the increase of wheat bran mass, the quality of wheat bran micro powder decreased firstly and then increased. It was also found that the sensitivity of wheat bran superfine powder yield to wheat bran mass was higher than that of wheat bran superfine powder yield to grinding medium mass. Conclusion： The grinding medium mass and wheat bran mass of vibration mill have significant effects on the superfine grinding of wheat bran, but the effect levels are different.

Labor education is an important part of college and primary education, which directly determines the labor spirit, labor value orientation and labor skill level of the cultivated workers. Through the quantitative analysis of the current situation of labor education in local colleges and universities, the path of optimizing labor education in local colleges and universities is put forward in this paper, so as to promote the development of labor education in local colleges and universities.

Superfine grinding, involving the fragmentation mechanism of wheat bran cell tissue, is being employed by milling industry. In order to determine the effect of wheat bran cell tissue on the fragmentation mechanism when using superfine grinding, a technical scheme of the nonlinear finite element numerical simulation method based on LS-DYNA is proposed in this paper. The physiological characteristics of wheat bran structural layers including outer pericarp, intermediate layer and aleurone layer are examined first, and then the mechanical properties of wheat bran structural layers and their effects on the super fine grinding process are analyzed. Secondly, the explicit time integration algorithm of LS-DYNA is introduced, and the application feasibility of LS-DYNA in the analysis of wheat bran superfine grinding mechanism is discussed. Finally, the specific application of LS-DYNA in the determination of grinding form and load, the selection and design of the grinding media and the selection of grinding temperature are discussed in detail in the process of superfine grinding for wheat bran cell tissue. The above research provides a theoretical basis for selecting and developing the equipment and technology suitable for wheat bran superfine grinding, and lays a theoretical foundation for enhancing the quality and efficiency of wheat bran superfine grinding.Supported by National Natural Science Foundation - Henan Joint Fund Key Support Project (No. U1604254) and Open Subject of National Engineering Laboratory of Wheat & Corn Further Processing (No. NL2017010). Keywords:: LS-DYNA, Wheat bran, Superfine grinding, Fragmentation mechanism, Cell tissue

Objective To observe the clinical efficacy in patients treated with two different eruption blocking appliances.Methods Totally 40 children (21 boys, 19 girls), aged 6.5-8.5 years old, having premature eruption of permanent tooth were randomly divided into 2 groups,with 20 cases in each group: group A (wearing traditional band and loop appliance of eruption blocking during the whole day) and group B(wearing modified band and loop appliance of eruption blocking during the whole day). The patients had regular check every 3 months until the root of premature premolar developed 1/2. The efficacy of the two appliances was evaluated on the following aspects: space maintenance, losing ratio of bands, tooth mobility and prevalence of dental caries of the premolars.Results The efficacy on space maintaining and eruption impaction were not statistically different (P > 0.05), but prevalence of dental caries of the teeth in group A was higher than that of group B (P < 0.05). Conclusion The modified band and loop appliance of eruption blocking is effective and good for tooth health.

This paper evaluates the effects of horizontal web reinforcement on cyclic behaviour of RC squat wall using test results of three pairs of specimens. One specimen was tested by the authors while the other five were adopted from the existing researches. Each specimen pair was designed with approximately the same design parameters, except that uniformly distributed horizontal web reinforcement was provided in one specimen only. Shear stress demand, evaluated based on the shear associated with the development of flexural strength at the base, was approximately 3.5f′c(psi) $3.5\sqrt {{{f'}_c}} (psi)$, 6.0f′c(psi) $6.0\sqrt {{{f'}_c}} (psi)$, and 8.0f′c(psi) $8.0\sqrt {{{f'}_c}} (psi)$, respectively, for each specimen pair. Test results show that specimen with uniformly distributed horizontal web reinforcement exhibited larger deformation capacity compared to specimens without it. Specimen peak strengths, on the other hand, appear to be similar with and without uniformly distributed horizontal reinforcement and can be satisfactorily predicted by nominal flexural strength.

Los traumatismos causados por el tránsito son la principal causa de muerte en personas de 10-24 años a nivel mundial y representan alrededor del 15% de todas las muertes en varones. La carga de enfermedad de los traumatismos causados por el tránsito está distribuida de manera desigual entre los países pues la tasa de mortalidad más alta es ochenta veces superior a las más baja. Existe una clara desigualdad en el riesgo de ocurrencia de traumatismos causados por el tránsito, siendo notoriamente mayor en los países en desarrollo. Esta desigualdad se constituye como un reto mundial importante y se debe, aunque no sean los únicos factores, a muchas razones, incluyendo la rápida motorización y la pobre infraestructura. Este artículo hace énfasis en varios aspectos fundamentales cuya finalidad es informar a los programas diseñados para prevenir los traumatismos causados por el tránsito en los países en desarrollo, donde esta situación está más extendida. En primer lugar, la seguridad vial es un tema de desarrollo; en segundo lugar, los traumatismos causados por el tránsito constituyen un problema importante para la salud; en tercer lugar, los traumatismos causados por el tránsito pueden ser prevenidos mediante la implementación de medidas científicas adecuadas; en cuarto lugar, es necesaria la atención de emergencias hospitalarias y prehospitalarias; y, finalmente, la investigación en los traumatismos causados por el tránsito está relegada en los países de ingresos bajos y medios. Se discute además la repercusión de estos avances para el Perú.Road traffic injury (RTI) is the leading cause of death in persons aged 10-24 worldwide and accounts for about 15% of all male deaths. The burden of RTI is unevenly distributed amongst countries with over eighty-fold differences between the highest and lowest death rates. Thus the unequal risk of RTI occurring in the developing world, due to many reasons, including but not limited to rapid motorization and poor infrastructure, is a major global challenge. This editorial highlights a number of key issues that must inform programs designed to prevent RTI in the developing world, where the epidemic is all the more insidious. Firstly, road safety is a development issue; secondly, road traffic injury is a major health issue; thirdly, road traffic injuries can be prevented by the implementation of scientific measures; fourthly, pre-hospital and hospital emergency care is needed; and fifthly, research on RTI is neglected in low-income and middle-income countries. The repercussion of such progress to Peru is also discussed.