A phosphorus (P) and boron (B) enhanced N-doped carbon nanofiber material was prepared via a facile electrospinning method as a binder-free anode for lithium-ion storage application, achieving a high capacity retention of 94.8% after 500 cycles.

Current industrial robotics technology is often not well integrated with the enterprise’s on-site environment and actual working conditions and small and medium-sized enterprises are unable to achieve product automation due to production cost constraints. In order to meet the medium and small scale production of the slide valve body of OCV (Oil Control Valve) of a certain enterprise and its special process requirements, the automatic test system and sorting system based on the production environment of the enterprise are studied and designed. Firstly, according to the production conditions and process requirements of the enterprise, the overall design scheme of the automatic production line is put forward based on the existing automatic assembly system. Secondly, the test description is further improved by analysing and interpreting the test requirements of the products in detail and the automatic test system and test process are designed. Finally, according to the sorting process requirements, a Cartesian coordinate robot sorting system with two-terminal manipulators parallel operation is designed and its sorting motion scheme is optimized. The automatic test system and sorting system are seamlessly connected with the automatic assembly system, which can efficiently complete the automatic test and sorting of products and meet the production cycle time.

Laser printer internal parts are prone to deformation when they are working in high temperature environment for a long time, resulting in machine faults such as paper jam and angle folding. In order to predict the deformation of parts in thermal environment and further determine their initial allowable deformation, so as to guide the structural design and production process of parts, and to reasonably determine the stress mode of parts in the working process, the structural deformation of the complex injection part-fuser upper cover in a laser printer after long-term operation in thermal environment is studied. First, on the basis of fusing temperature control technology and heat exchange analysis of the whole machine, the internal temperature field of a laser printer is numerically simulated by using the flow and heat transfer analysis software, and the temperature data of the key parts inside the machine are obtained more accurately. Then, the sequential coupling method is used to apply the results of thermal analysis of the whole machine as the external loads of static stress analysis to the fuser upper cover model, and the structural thermal deformation data of the fuser upper cover are obtained.

Firstly, the paper chooses one college as a case for analysis on self- cognition and career planning of college's students. And then, the paper analyzes the problems of career planning. And finally, from the following points such as adjusting the attitude to actively cope with employment pressure, a comprehensive analysis of college students to strengthen career planning awareness, and self - employed to innovate career planning to strengthen college's students career planning.

At present, there are three modes studying on the relationship between strategic human resource management and organizational performance. These modes are universality mode, form mode and contingency mode. The paper firstly analyses on the characteristics of these three modes. And then, it infers the need for the use of contingency mode studying on the relationship between strategic human resource management and organizational performance. Secondly, it measures the standard of the organizational performance. At last, the paper takes the qualitative research method to study on the relationship between strategic human resource management and organizational performance, what factors influence on the relationship between the two, and the mediating variables and how to influence the process. It tries to provide a basis for subsequent research.

In this work, FLUENT is used to systematically investigate the effects of two key factors on the hydrothermal performance and entropy generation within a mass flow rate range of 0.3–1.1 g/s: (1) the coupling modes between grooves (simple and composite) and microchannels (straight, convergent, and divergent), and (2) the cross-sectional shape of composite grooves. Results show that, compared with simple grooves, composite grooves induce stronger spiral fluid disturbances between the mainstream and near-wall zones, enhancing direct fluid impingement on groove walls and thus improving the cooling effect on the microchannel. Among the configurations, the coupling of composite grooves and converging microchannels (CG-R-CM) yields the highest Nusselt number (Nu = 2.38) and the lowest entropy production (SG = 0.0015) at a mass flow rate of 1.1 g/s, albeit with an exponential increase in pressure drop. In contrast, coupling of composite grooves with divergent microchannels (CG-R-DM) effectively reduces pressure drop, achieving a maximum hydrothermal performance (η) of 1.485. Furthermore, modifying the cross-sectional shape of composite grooves significantly improves heat transfer performance with only a slight increase in the pressure drop. The study provides design references for microchannel-composite groove coupling.