A hot topic in recent years is the prediction of the potential distribution of possible invasive insects. China is facing a great challenge due to invasive insects. Scarab beetles are a highly diverse group, and many of them are well-known invasive insects. Here, in order to prevent the invasion of scarab beetles in China, we screened the invasive insects globally and obtained a preliminary database of quarantine or invasive scarab beetles. From the obtained database, we selected the top five species (Popillia japonica, Heteronychus arator, Oryctes monoceros, Oryctes boas and Amphimallon majale) to discuss and analyzed the potential distribution of three species that have not invaded China by using the MaxEnt model. The prediction results show that every continent has potential distribution areas for these species. Specifically within China, Popillia japonica and Amphimallon majale were mainly concentrated in east central regions and Heteronychus arator and Oryctes boas were mainly distributed in the southwest areas, while Oryctes monoceros has no suitable area. Notably, Yunnan, Hunan, Jiangxi and Zhejiang province had a high risk of invasion. In general, local agriculture, forestry and customs departments in China should pay more attention to monitoring for the prevention of infestation by invasive insects.

The teaching of ideological and political theory courses in colleges plays an important role in helping college students lift their power, earnestly implementing the fundamental task of strengthening morality education, and deeply studying ideological theory to arm the mind. At present, ideological and political class teaching in colleges is facing some adversities: the teaching environment is not complete; educators' classroom control ability is not strong; The educational object's classroom involvement state is not good. Therefore, colleges should create a good classroom teaching environment, teachers should improve capability of independent innovation, and students should integrate themselves into the class. Through the coordination and cooperation among universities, teachers and students, the ideological and political course in colleges will be built into a course that will benefit college students for life, thereby pushing the classroom teaching of ideological and political course to a new height, and effectively enhancing the affinity and effectiveness of classroom teaching of ideological and political course. With the convening of the National Conference on Ideological and Political Work in Colleges and Universities, the Party and the state pay more and more attention to the classroom teaching construction of ideological and political theory courses in colleges, and constantly improve and perfect the discipline and order of classroom teaching. The paper analyzes the current situation of classroom teaching of ideological and political theory courses in colleges, uncovering the difficulties that the course is facing, discussing the adversities and the root of the problems, and finally figuring out some ideas to implement classroom teaching reasonably.

This paper investigates the clinical application value of quantitative CT (QCT) technique in evaluating liver fat content in patients with schizophrenia. 457 patients with schizophrenia underwent abdominal CT and QCT scans. QCT postprocessing software (QCT Pro version 6.1) measures the percentage of liver fat content in all patients and calculates the average value. Then, the CT workstation displays the corresponding liver/spleen CT value ratio. SPSS 25.0 software is used for statistical analysis of data, and the correlation coefficient between the mean liver fat content. The ratio of liver/spleen CT values is calculated and the consistency between the results is compared. The ROC curve is used to define the cutoff value of the target and evaluate its diagnostic efficiency. There is a high negative correlation between the mean liver fat content and the ratio of liver/spleen CT value in all schizophrenia patients (r = −0.935, P < 0.05). The identification rate of patients with mild fatty liver by QCT technology is 4 times higher than that of the liver and spleen CT value ratio (50.98% Vs 12.47%). Taking the ratio of the liver to the spleen as the standard, the ROC curve of the liver fat content in QCT is drawn, the cutoff values of the mean liver fat content of the normal liver and mild fatty liver and mild and moderate fatty liver were 9.35% and 19.4%, respectively. Comparing this result with the results obtained by the existing QCT for the fatty liver diagnosis and grading standard value (American standard) shows that there is a difference of about 5% between the two. Compared with the semiquantitative liver/spleen ratio, QCT technology can quantify the liver fat content. Given the particularity of patients with schizophrenia, QCT can be used as an important test for identifying early fatty liver and assessing the severity of fatty liver.