The paper presents a study about using Insta.Ling e-learning platform in university teaching process of English language for Biology students.The aim of this study is to estimate its Remote controls effectiveness and the correlation between the number of repetitions and the number of words memorized.The total number of students involved in this res
Recent progress toward an HIV vaccine highlights both the potential of vaccines to end the AIDS pandemic and the need to boost efficacy by incorporating additional vaccine strategies.Although many aspects of the immune response can contribute to vaccine efficacy, the key factors have not been defined fully yet.A particular area that may yield new i
A rotary driving component is the power output unit of a lunar sampler.A planetary gear system is used as the transmission system.The lunar sampler is subjected to an extremely rigorous mechanical environment during transportation.In this paper, the time-varying meshing stiffness curves of planetary gears are calculated by the Shi Chuan method.A tr