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전기장과 자기장 구동이 가능한 무선 하이드로젤 밀리그리퍼
김동인,장세은,송수정,김규리,이지은,이예린,박석호 제어로봇시스템학회 2021 제어로봇시스템학회 국내학술대회 논문집 Vol.2021 No.6
This paper proposes an untethered milli-gripper that can be actuated by electric and magnetic fields. The milli-gripper manufactured by using electroactive hydrogel is capable of picking up or releasing objects by moving both arms by an electric field. In addition, since MNPs (magnetic nanoparticles) are included inside, it is possible to accurately move to a desired point using a magnetic field. The proposed milli-gripper can perform the role of cargo delivery by holding and releasing an object using an electric field and moving it using a magnetic field.
김 임,황익근,김동인 大韓神經精神醫學會 1993 신경정신의학 Vol.32 No.3
The purpose of this study was to compare liters of cold agglutinins in schizophrenic patients with those in normal healthy subjects. 67 schizophrenic patients and 61 healthy control subjects were included in the study. Of 67 schizophrenic patients, 44 patients had been treated with antipsychotic drugs for at least 6 months before the testing, and 21 patients had been drug free for at least 1 year before the testing. The results of the study were as follows : 1) More schizophrenic patients showed significant positive test results than control subjects did. There was a ststistically significant difference between schizophrenic patients and control subjects in positive cold agglutinin test(p<.001). 2) There was a statistically significant difference in positive test results between drug treated group and drug free group(p<.001). 3) The titer of the schizophrenic patients who had positive cold agglutinin tests showed relatively high frequency at above 1 : 4, but the titer of the control subjects who had positive cold agglutinin tests showed relatively high frequency at 1 : 2. 4) There was no significant difference in sex between subjects with positive cold agglutinin test results and those with negative results(p>.05). In conclusion, the findings suggest that positive cold agglutinin tilers are significantly associated with schizophrenia.