ABSTRACT
Along with the spreading of the Corona Virus Disease 2019(COVID-19), most of people's normal life are disorganized, within which, college students' learning programs also demonstrate numerous changes. Home exercise has become a new exercise mode under regular epidemic prevention measures, and college students' sports show more distinct autonomy. This work is going to analyze the influences that the COVID-19 Pandemic Era has upon college students' physical conditions and their cognition on PE study, so as to not only find out a way to optimize students' cognition on PE study and help to strengthen their physical quality, but also provide a reference for the emphasis of physical education under the circumstance of regular epidemic prevention measures in the Post-COVID-19 Era. Through this research, we find out that the health awareness of college students during the Post-COVID-19 Era (from Apr. 2020 - , when domestic pandemic was under control) has been improved significantly, but still, few of them take regular exercise, while their sports needs are diversified. It is also discovered that the physical quality of college students shows a downward trend, especially for men. Therefore, the following suggestions are made especially for college physical education in the Post-COVID-19 Era: firstly, lead college students to set up positive sports values;secondly, help them to lose weight and control BMI level reasonably;and then, in terms of physical fitness, we should enhance the training of men's strength and speed quality, as well as women's endurance quality, apart from that, improve college students' specific physical weakness in time, so as to achieve the goal of 'educating students with all-around physical education'. © 2021 IEEE.
ABSTRACT
Under the current situation of prevention and control Corona Virus Disease 2019(COVID-19), the development of fitness industry in Liuzhou is analyzed, and the survival environment, management, coaches' quality and reasons for the closure of the club are analyzed. The results show that Liuzhou fitness market is greatly affected by the economic and social environment, and the seemingly prosperous fitness market has met with bottlenecks, and its operation is in danger. Taking "Internet+" as a new power engine, we should build a service platform of Liuzhou fitness alliance, strengthen the supply side reform such as management and coach quality, increase effective supply of high quality, and guide clubs to play their own advantages to develop differentiated competition, which is an effective way to promote the transformation and upgrading of traditional fitness industry.
ABSTRACT
The epidemic caused by coronavirus poses a serious threat to human health, but there is no specific drug or vaccine for the treatment of this kind of virus infection. Herein, this article selects typical case studies in recent years and reviews the medicinal chemistry strategies of anti-SARS-CoV, MERS-CoV and other coronavirus drugs from the perspective of medicinal chemistry, and tries to provide some clues to current drug research against-SARS-CoV-2.
ABSTRACT
Objective: To understand the epidemiological characteristics of the cases of COVID-19 epidemic clusters, and explore the influence of family factors and social factors such as group activities on the spread of the disease. Methods: The data of cases of COVID-19 epidemic clusters from 19 January, 2020 to 25 February, 2020 were collected from the official platforms of 36 cities in 6 provinces in China. Descriptive statistical methods, χ(2) test and curve fitting were used to analyze the epidemiological characteristics of the clustered cases. Results: By 25 February, 2020, the data of 1 052 cases in 366 epidemic clusters were collected. In these clustered cases, 86.9%(914/1 050) occurred in families. Among the 1 046 cases with gender information, 513 were males (49.0%) and 533 were females (51.0%). The cases were mainly young adults between 18 and 59 years old, accounting for 68.5% (711/1 038). In the 366 epidemic clusters , the clusters in which the first confirmed cases with the history of sojourn in Wuhan or Hubei accounted for 47.0%(172/366). From 19 January to 3 February, 2020, the first confirmed cases with Wuhan or Hubei sojourn history accounted for 66.5%. From 4 to 25 February, the first confirmed cases who had Wuhan or Hubei sojourn history accounted for only 18.2%. The median of interval between the first generation case onset and the second generation case onset was 5 (2-8) days. The median of onset- diagnosis interval of the initial cases was 6 (3-9) days, and the median of onset-diagnosis interval of the secondary cases was 5 (3-8) days. Conclusions: Epidemic clusters of COVID-19 were common in many cities outside Wuhan and Hubei. Close contact in family was one of the main causes for the spread of household transmission of the virus. After 4 February, the epidemic clusters were mainly caused by the first generation or second generation cases in local areas, and the time for diagnosis became shorter.