Carrying out theme education practice is an important measure of Ideological and political work.The goal and content of theme education activities are generally overlapped with other activities,which makes the school ...Carrying out theme education practice is an important measure of Ideological and political work.The goal and content of theme education activities are generally overlapped with other activities,which makes the school unable to bear the burden of carrying out multiple activities at the same time,thus affecting the actual effect of theme education practice activities.In this paper,by improving the method of theme education,and with a positive attitude and innovative spirit to continue to innovate the working mode of theme education practice,the way of using new media technology in the process of theme education is analyzed,and its characteristics and laws are analyzed,so as to improve the effective working path of theme education.展开更多
Radioactivity is a natural phenomenon present in the universe. So, because of human life solidarity with a habitat, we are permanently in contact, especially through building materials. The objective of this work is t...Radioactivity is a natural phenomenon present in the universe. So, because of human life solidarity with a habitat, we are permanently in contact, especially through building materials. The objective of this work is the determination of the used cement radioactivity level in the buildings in Cote d'Ivoire. Thus, samples of grey and white cement currently used on Ivorian territory were taken. In order to determine the radioactivity level of this cement, samples were analyzed by using gamma spectrometry chain which contains a NaI (Tl) scintillation detector designed by the German manufacturer LD-DIDACTIC, coupled to a multichannel analyzer (AMC) using a Cassy Lab software. Thus, the specific activity of the primordial radionuclides 226Ra, 232Th and 40K, was able to be determined. The average values obtained are 29.66 Bq/kg, 34.88 Bq/kg and 178.424 Bq/kg respectively for 226Ra, 232Th and 40K. All average values are below the limit values recommended by UNSCEAR. However, we evaluated the radiological parameters such as the equivalent radium activity and the annual effective dose in order to translate the specific activity in terms of harmfulness. Values obtained for these parameters are below those recommended by ICRP and UNSCEAR. These results show that the risk incurred by the use of these different brands of cement is low.展开更多
基金"Research on the Effectiveness of Promoting Thematic Education Practice Activities of College Counselors in the New Media Era"(Project No.:201910)Part of the research results of the Higher Education Teaching Reform Key Entrustment Project of Heilongjiang Province(Project No.:SJGZ20200067)+2 种基金Part of the research results of the"Great Northern Agriculture Scholar Program"Education Scholar Fund Project of Northeast Agricultural University and the University Education Teaching Research Database Cultivation Project(Project No.:201854)The Research Project of the Communist Youth League of Northeast Agricultural University(Excellent Project)(Project No.:201701)Part of the research results of the Employment and Entrepreneurship Special Research Fund of Northeast Agricultural University(Project No.:CY201607).
文摘Carrying out theme education practice is an important measure of Ideological and political work.The goal and content of theme education activities are generally overlapped with other activities,which makes the school unable to bear the burden of carrying out multiple activities at the same time,thus affecting the actual effect of theme education practice activities.In this paper,by improving the method of theme education,and with a positive attitude and innovative spirit to continue to innovate the working mode of theme education practice,the way of using new media technology in the process of theme education is analyzed,and its characteristics and laws are analyzed,so as to improve the effective working path of theme education.
文摘Radioactivity is a natural phenomenon present in the universe. So, because of human life solidarity with a habitat, we are permanently in contact, especially through building materials. The objective of this work is the determination of the used cement radioactivity level in the buildings in Cote d'Ivoire. Thus, samples of grey and white cement currently used on Ivorian territory were taken. In order to determine the radioactivity level of this cement, samples were analyzed by using gamma spectrometry chain which contains a NaI (Tl) scintillation detector designed by the German manufacturer LD-DIDACTIC, coupled to a multichannel analyzer (AMC) using a Cassy Lab software. Thus, the specific activity of the primordial radionuclides 226Ra, 232Th and 40K, was able to be determined. The average values obtained are 29.66 Bq/kg, 34.88 Bq/kg and 178.424 Bq/kg respectively for 226Ra, 232Th and 40K. All average values are below the limit values recommended by UNSCEAR. However, we evaluated the radiological parameters such as the equivalent radium activity and the annual effective dose in order to translate the specific activity in terms of harmfulness. Values obtained for these parameters are below those recommended by ICRP and UNSCEAR. These results show that the risk incurred by the use of these different brands of cement is low.
