September 2017 Contents Preface Ensuring People’s Right to Health Based on China’s Conditions Continuous Improvement of Health Environment and Conditions Public Health Service Capability Improving Steadily Great Imp...September 2017 Contents Preface Ensuring People’s Right to Health Based on China’s Conditions Continuous Improvement of Health Environment and Conditions Public Health Service Capability Improving Steadily Great Improvement in the Quality of Medical and Health Services Improvement of the National Medical Security System展开更多
In radiotherapy, the energy of the γ rays used could be larger than 10 Me V, which would potentially activate stable nucleus into a radioactive one. The γ induced reactions on some of the human essential elements ar...In radiotherapy, the energy of the γ rays used could be larger than 10 Me V, which would potentially activate stable nucleus into a radioactive one. The γ induced reactions on some of the human essential elements are studied to show the probability of changes of nuclei. The Talys 1.4 toolkit was adopted as the theoretical model for calculation. The reactions investigated include the(γ, n) and(γ, p) channels for the stable Na, Mg, Cl,K, Ca, and Fe isotopes, with the incident energy of γ ranging from 1 to 30 Me V. It was found that the cross sections for the reactions are very low, and the maximum cross section is no larger than 100 mb. By considering the threshold energy of the channel, the half-life time of the residue nucleus, and the percentage of the element accounting for the weight and its importance in the body, it is suggested to track the radioactive nuclei22 Na,41Ca, and42,43 K after γ therapy. The results might be useful for medical diagnosis and disease treatment.展开更多
In this paper,a 3D upstream finite element method is developed to analyze the ionized electric field around the UHVDC transmission lines including the building near it.The ionized electric field around the building is...In this paper,a 3D upstream finite element method is developed to analyze the ionized electric field around the UHVDC transmission lines including the building near it.The ionized electric field around the building is reduced due to the shielding effect of the building and the shielding distance is about three times its height.The ionized electric field including the human body model on the building and away from the building is also taken into account.The ionized electric field distortion ratio of the human body model is discussed in this paper.The distortion ratios for the positions on the building are less than those on the ground.展开更多
文摘September 2017 Contents Preface Ensuring People’s Right to Health Based on China’s Conditions Continuous Improvement of Health Environment and Conditions Public Health Service Capability Improving Steadily Great Improvement in the Quality of Medical and Health Services Improvement of the National Medical Security System
基金Supported by the Plan for Scientific Innovation Talent of Henan Province(PSITHP)the Young Teacher Project at Henan Normal University
文摘In radiotherapy, the energy of the γ rays used could be larger than 10 Me V, which would potentially activate stable nucleus into a radioactive one. The γ induced reactions on some of the human essential elements are studied to show the probability of changes of nuclei. The Talys 1.4 toolkit was adopted as the theoretical model for calculation. The reactions investigated include the(γ, n) and(γ, p) channels for the stable Na, Mg, Cl,K, Ca, and Fe isotopes, with the incident energy of γ ranging from 1 to 30 Me V. It was found that the cross sections for the reactions are very low, and the maximum cross section is no larger than 100 mb. By considering the threshold energy of the channel, the half-life time of the residue nucleus, and the percentage of the element accounting for the weight and its importance in the body, it is suggested to track the radioactive nuclei22 Na,41Ca, and42,43 K after γ therapy. The results might be useful for medical diagnosis and disease treatment.
基金supported by the Key Project of the National Natural Science Foundation of China(Grant No.51037001)the National Basic Research Program of China("973"Program)(Grant No.2011CB209401)
文摘In this paper,a 3D upstream finite element method is developed to analyze the ionized electric field around the UHVDC transmission lines including the building near it.The ionized electric field around the building is reduced due to the shielding effect of the building and the shielding distance is about three times its height.The ionized electric field including the human body model on the building and away from the building is also taken into account.The ionized electric field distortion ratio of the human body model is discussed in this paper.The distortion ratios for the positions on the building are less than those on the ground.
