Magnet Design of 4 MeV Cyclotron for the BNCT

Research concern about neutron radiography has been increasing in Korea since 2001. Neutron radiography can help for the weakness of X-ray image. Neutron radiography can be used in not only non-destructive inspection but also basic science research. For those reasons more compact; mono-energetic neutron source is needed. The 4 MeV deuteron cyclotron can be a candidate for the production of mono-energetic neutrons. In this paper optimal 4 MeV deuteron cyclotron magnet design is shown for neutron generation by d(d, n)He(3) reaction. All field simulations have been performed using POSSION and OPERA-3D (TOSCA) for magnet system design. The required beam current is 1 mA, 4 MeV. The first purpose of this cyclotron is to generate fast neutrons with deuterium gas target. The second purpose of this cyclotron is material science and nuclear technology research in biology, physics and chemistry. Also it will be used in industries including neutron radiography.X110sciescopuskc

Impact of experience of psychiatrists and psychiatry residents regarding electronic communication and social networking on internet use patterns: a questionnaire survey for developing e-professionalism in South Korea

BACKGROUND:The development of technology, novel communication, and social networking can positively or negatively affect the therapeutic alliance between patients and psychiatrists. We conducted this study to identify Internet use patterns of psychiatrists and psychiatry residents in South Korea and to provide basic data for developing e-professionalism. METHODS:In this questionnaire survey included a total of 250 participants, of which 195 (78%) completed the questionnaire. Questions included demographics, use of email, web searches, personal and professional use of websites and social networking, and negative and positive experiences of electronic communication and social networking. We confirmed the correlation between experience and use patterns of psychiatrists' electronic communication and social networking. RESULTS:A total of 129 participants (66.2%) reported that they posted their personal or professional content online, 112 (57.9%) had received patients' requests through electronic communication or social networking, and 120 (61.4%) had communicated with patients via electronic communication or social networking. In total, 170 participants (87.2%) reported that they were worried about the negative consequences of using electronic communication and social networking, and 180 (92.3%) indicated they were not educated about electronic communication or social networking. CONCLUSION:In order to reduce the negative effects of electronic communication and social networking, we need guidelines that are appropriate for the situation in South Korea. Furthermore, future research will need to identify and suggest solutions for negative experiences of electronic communication and social networking that may affect the relationship between patients and physicians