• Resources Recycling
• /
• v.6 no.3
• /
• pp.22-27
• /
• 1997

Recycling of radioactively contaminated metal wasles is very attractive to reduce thc final disposal volumc of the radioactive wastes, thereby maximizing the usage of nahrral rzsuunts and minimizmg the detrimental effects of thz rzdioaclive wastes on the environment. In the recycling process, many complicated processes arc involved. Among those processes the 'surface contamination removal techniques such as physical, chemical and electrochern~calm ethods are the most critical and Ircquently applied in accordance with the contamination characteristics and the chemical compositions of the metal wastes. In this sludy, the sulfuric acid-cerium method and electmchemical methods were applied lu removc the conatiminated suhce. The results showed the surface contaminalion could he lowered to the background levcl by lhasc mclhods.

• 대한치주과학회:학술대회논문집
• /
• 2003.11a
• /
• pp.85-86
• /
• 2003

• Korean Journal of Food Science and Technology
• /
• v.13 no.1
• /
• pp.20-24
• /
• 1981

Residues of neoasozine in rice grain were determined by neutron activation and colorimetric techniques. Twice application of the chemical before flowering did not lead to any increased residue level while 4-times application resulted in significant increase in the residue level up to 0.54-0.75 mg $As_2O_3/kg$. The partition ratio of arsenic residues into polished rice grain and bran was 73 : 27 in 100% polishing while most of the residues in the bran was transferred to oil cake fraction during solvent extraction, reaching up to 2.9 mg $As_2O_3/kg$. The neutron activation technique was advantageous because of its high sensitivity and the smaller sample amounts required for analysis.

• Journal of the Korean Society of Radiology
• /
• v.5 no.5
• /
• pp.267-275
• /
• 2011

The purpose of this study was to examine the impact of the professional burnout and job autonomy of radiologic technologists on their turnover intention in hospitals. The major findings of the study were as follows: As for the average and standard deviation of the radiologic technologists in professional burnout and job autonomy, they got a mean of 3.15 in overall professional burnout, which was above the average. They got 2.88 in job autonomy, which was below the average. And they got 3.30 in turnover intention, which indicated that they had a strong tendency to change jobs. Regarding the influential factors for turnover intention, emotional burnout, loss of interest and loss of enthusiasm were identified as the factors that exerted a significant influence on turnover intention. If the kind of environments that stimulate their professional enthusiasm and allow them to make a decision on radiographic examinations based on their own professional knowledge is created, their burnout will be minimized. And the development of programs geared toward bolstering their job autonomy is expected to weaken their turnover intention, to enhance the efficiency of the personnel administration of radiologic technologists and their qualifications, and ultimately to boost their status in hospital organizations.

• Journal of the Korean Society of Radiology
• /
• v.11 no.6
• /
• pp.517-523
• /
• 2017

As the research for evaluating the welfare satisfaction factor of radiological technologist who works in the clinic, this study was conducted to analysis the satisfaction factor, satisfaction level, and the improvements. During July 14, 2014 to March 31, 2015, after we sent out a total of 150 questionnaires for the survey to radiological technologists working at the clinic located in Gyoungsangnam province, 130 questionnaires suitable for research were analysis by using SPSS 18.0 statistical analysis software. As the welfare factors, working environment, financial support, educational opportunity, medical support, working culture, etc. were used. And as the sociodemographic characteristics, the gender, marriage, level of education, age, and working period were used. As a result of analysis of satisfaction level by welfare factors, working environment was $2.74{\pm}0.65$, financial support was $2.42{\pm}0.74$, educational opportunity was $2.24{\pm}0.72$, medical support was $2.68{\pm}0.69$, and working culture was $2.27{\pm}0.64$. Consequentially, the satisfaction level of welfare factor ($2.45{\pm}0.59$) was confirmed as below average. On the nature of the clinic, the management's lack of awareness of welfare is a realistic limit. In order to improve the satisfaction level of clinic's radiological technologist, it thought that there should be the proactive changes of the managements and the change of the medical staff 's perception. Moreover, it is important to provide selective welfare effectively by the investigation of employees' desire for welfare.

• Journal of the Korean Society of Radiology
• /
• v.13 no.1
• /
• pp.103-110
• /
• 2019

The objective of this study was to prepare the baseline data for vocational key competence of radiologists by analyzing the communication skills, problem-solving skills, self-development capability, interpersonal skills, and vocational ethics, which are required by NCS job descriptions for radiologists, of college students majoring in radiology. This study surveyed 79 sophomore and junior college students majoring in radiology at S University from Nov 19 to Nov 30, 2018, using questionnaires and analyzed the levels of vocational key competencies. The analysis results of vocational key competences levels showed that the level of interpersonal skills was the highest (71.2 points for juniors and 74.9 points for seniors). The levels of problem-solving skills and self-development capability were low. Conflict management capability, which is a sub-domain of interpersonal skills, was 77.5 and 80.5 points for juniors and seniors, respectively, which were the highest, while leadership ability was the lowest. When the sub-domains of self-development capability were analyzed, self-recognition capability was the highest (70.0 points for juniors and 74.8 points for seniors) and the career development capability was the lowest. Colleges are required to develop a customized regular curriculum that is well-linked to the clinic in order to improve the vocational key competencies required by the NCS job description to prepare for the blind hiring process. Colleges also put efforts to educate radiologists who can actively cope with rapidly changing medical environment by running various non-regular programs.

• The Journal of the Acoustical Society of Korea
• /
• v.38 no.4
• /
• pp.387-395
• /
• 2019

TMA (Target Motion Analysis) in passive sonar is generally conducted with the bearing only or the bearing frequency. In order to conduct TMA fast and accurately, it is essential to estimate a initial target maneuver precisely. The accuracy of TMA can be improved by using SNR (Signal to Noise Ratio) information and acoustic propagation model additionally. This method assumes that the radiated noise level of the target is known, but the accuracy of TMA can be degraded due to a mismatch between the assumed radiated noise level and the actual radiated noise level. In this paper, TMA with the acoustic propagation model, bearing measurements, and SNR information is conducted in the ocean environment of South Korea (East Sea/ Yellow Sea/ South Sea). And the performance analysis of TMA for the mismatch in the radiated noise is presented.

• Journal of the Korean Society of Radiology
• /
• v.11 no.6
• /
• pp.475-481
• /
• 2017

As the research about supplementary education of radiological technologist who works in Gyoungsangnam province, this study was conducted to draw the improvements by analyzing the satisfaction level and problems of the supplementary education. During November 01, 2016 to December 15, 2016, after we sent out a total of 250 questionnaires for the survey to radiological technologists working at medical institution located in Gyoungsangnam province, 200 questionnaires suitable for research were analysis by using SPSS 18.0 statistical analysis software. As the satisfaction factors, 21 items such as system, subject, help, appropriateness of lecturer selection, professionalism were used. And as the problem factors, 18 items such as place, transportation, diversity, administrative treatment, education promotion, proceed method were used. Consequentially, the satisfaction level(3.12 point) and problems(3.01 point) of the supplementary education were confirmed as normal level. The supplementary education is an essential education that any health and medical service personnel must complete. In order to improve the effectiveness and efficaciousness of the education, the diverse opinions and efforts to improve the education levels must be supported. Futhermore, through the realistic educational program, the continuous education for radiological technologist with excellent qualities and competence should be done.

• Journal of Sericultural and Entomological Science
• /
• v.52 no.2
• /
• pp.155-158
• /
• 2014

Biological control of Tetranychus urticae by Phytoseiulus persimilis was carried out on tropical plant (Erythrina caffra, Phytolacca dioica) from April to July. Experiments were conducted at Tropical Plant Resources Research Center of Korea National Arboretum. Phytoseiulus persimilis (200 individual/tree) was released once (12. May) to control Tetranychus urticae. We measured the density of leaf-feeding T. urticae at intervals of approximately 2weeks after introducing P. persimilis. The densities of T. urticae were suppressed 10%, in Erythrina caffra and 49% in Phytolacca dioicas after 2 weeks introducing them.

• Journal of the Korean Society of Radiology
• /
• v.17 no.3
• /
• pp.401-410
• /
• 2023

A radiographer is a job in charge of diagnostic imaging equipment, and must contribute to the promotion of public health by suggesting an appropriate level of work. To this end, we intend to present an appropriate level of work through evaluation of human harm according to work, statistical evaluation through questionnaires, and domestic and international trends. In the case of human harm evaluation, considering radiation exposure, 42.6%, shield work, 69.7%, and in the case of magnetic resonance imaging, the maximum length of stay in the examination room should be adjusted to 15 minutes and not exceed 30 times. According to the survey statistics, it was confirmed that the physical and mental burden increased due to the high workload and difficulty compared to working hours. Based on domestic and international trends, it is necessary to adjust the examination standards for domestic radiographers to 36.8% to promote national health through qualitative improvement of radiological examinations. something to do.