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임성철,박상기,도남용,박상학,이승일,송창훈,박종 朝鮮大學校 附設 醫學硏究所 1998 The Medical Journal of Chosun University Vol.23 No.1
There are many advantages and disadvantages under the limited bachelor's admission system. To diminish the demerits and to increase the merits of this system, the authors posed questions to the faculties and students of the Department of Medicine. Chosun University College of Medicine and other colleges in Korea. The questionnaire was made according to trends and feelings in this system. We received a lot of information and suggestions as to how to improve the system, in the following paper we discuss and report the prospective aspects of the bachelor's admission system.
박종,박상기,박상학,도남용,송창훈,이승일,임성철 朝鮮大學校 附設 醫學硏究所 1998 The Medical Journal of Chosun University Vol.23 No.1
This is a pilot study to improve the flunk system, a self-reported questionnaire survey was done by 58 professors among a total of 94 professors at Chosun University Medical School in December 1997. The results were as follows : 1. In regard to the student's residence, 69% of professors answered that the current system was appropriate. For a proper method of flunking. 46.6% of the professors agreed to the introduction of retesting by the Academic Affairs Department and 44.8% of the professors agreed to the evaluation of academic achievement of each subject. 2. Sixty-seven point two percents of professors agreed to the changing of time of flunk. 43.1% felt at the end of course, 24.1% felt at midterm, and 25.9% felt that the current system. 3. In regard to flunking, 34.5% of professors thought the current system-if a student receives an F grade in to be one subject, he/she was flunked-was sufficient, but 65.6% of the professors felt needed there improvement. The method of improvement was considered was losing more than two credits-fail(32.8%), and losing more than four credits-fail(10.3%). 4. Eighty-four point five percent of the professors agreed to the necessity of flunking by grade point average(GPA) and 77.6% of the professors answered that the students who must re-register should take all designated subjects. 5. Seventy-two point four percent of the professors opposed summer or winter courses for students who flunk and 51.7% of the professors opposed the necessity of a management system for students. In conclusion, the professors in Chosun University Medical College recognized the necessity of improving the flunk system, especially, the time, method and record keeping. So a concrete follow-up study needed to improve the flunk system.
프로토 타입 조직등가비례계수기의 중입자가속기연구소의 135 MeV/u 탄소 이온에 대한 선형에너지 스펙트럼 측정
남욱원 ( Uk Won Nam ),이재진 ( Jae Jin Lee ),표정현 ( Jeong Hyun Pyo ),박원기 ( Won Kee Park ),문봉곤 ( Bong Kon Moon ),임창휘 ( Chang Hwy Lim2,),문명국 ( Myung Kook Moon ),하시시키다무라 ( Hisashi Kitamure ),신고고바야시 ( Shingo Kob 한국센서학회 2014 센서학회지 Vol.23 No.3
TEPC (Tissue Equivalent Proportional Counter) was usually used for high LET radiation dosimetry. We developed a prototype TEPC for micro-dosimetry in the range of 0.2~300 keV/μm. And, the simulated site diameter of the TEPC is 2 μm, of similar size to a cell nucleus. For purposes of characterization the response for high LET radiation of the TEPC has been investigated under 135MeV/u Carbon ions in HIMAC (Heavy Ion Medical Accelerator). We determined the gas multiplication factor and measured the lineal energy spectrum [yd(y)] of 135 MeV/u Carbon ions. The value of the gas multiplication factor was 315 at 700 V bias voltage. As a result of the experiment, we could more understand the performance of the TEPC for high LET (Linear Energy Transfer) radiation. And the procedure of high LET radiation dosimetry using TEPC is established.
결정 성장 방법에서 황산 농도가 황산 칼슘 결정 형태 및 법랑질과 복합 레진의 결합 강도에 미치는 영향
은희춘,구기갑,임호남 대한치과기재학회 1999 대한치과재료학회지 Vol.26 No.1
The calcium sulfate dihydrate(gypsum) crystal morphology on enamel surface treated by sulfuric acid aqueous solution (from 0.1M to 1.0M) was observed by scanning electron microscope. The shear bond strength between enamel and composite resin was measured by universal testing machine. From the experimental results, the conclusions of this study were; (1) The shear bond strength between enamel and composite resin was maximum at 0.1M sulfuric acid. The shear bond strength was decreased to 0.3M, hardly bonded from 0.4M to 0.6M, and increased from 0.7M as increasing sulfuric acid concentration. (2) The crystals was disordered as increasing sulfuric acid concentration. (3) The crystals formed by sulfuric acid aqueous solution were not firmly bonded on enamel surface because only crystal nuclei were attached on enamel, so fracture was occurred between enamel and crystal interface.
Change of Protein-synthetic Patterns with Habituations of Amoeba and Planaria by the Light Stimuli
Chang, Nam-Kee,Lim, Chae-Seong,Bae, Jin-Ho,Nam, Hyum-Joo The Ecological Society of Korea 1989 Journal of Ecology and Environment Vol.12 No.1
When the light stimulus was presented continuously, habituations were formed, after 13 and 14 hrs in amoeba and planaria, repectively. As amoeba more habituated, the light-escaping velocity of streaming was decreased with a negative-exponential function. in two-dimensional electrophoretic patterns of proteins of amoeba habituated, a newly synthesized protein (pI 7.0, MW 20 kD) was detected. Therefore, it is conjectured that similarity or commonality may exist between amoeba and planaria habituations to light, and in these behavioral modifications, specific protein(s) may be involved in molecular level.