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CFRP 가공 시 공구형상 변화에 따른 드릴마모에 관한 연구
노양호,오성훈 한국기계기술학회 2017 한국기계기술학회 학술대회논문집 Vol.2017 No.04
Carbon fiber reinforced plastics are typical examples of carbon fiber, which retain high strength and high strength at high temperatures. Also, it is applied to various fields, such as the structure of the aircraft, automobile, and the core industries. CFRP machining methods include machining tools such as cutting machining and laser machining. In this thesis, a tool dynamometer and tool microscope were used to measure the cutting characteristics of various cutting conditions and tool wear and tool wear. As a result, the cutting force of the new shape drill (lower shape drill) was measured higher than other tools, the amount of tool wear was the lowest, and it was found that a good machined surface was obtained.
경도인지장애와 치매 환자에서 숫자 거꾸로 따라하기로 측정한 작업기억에 대한 우울증의 영향
노양호(Yang-Ho Roh),김민재(Min-Jea Kim),김채리(Chae-Ri Kim),박진완(Jin-Wan Park),이연정(Yeon-Jung Lee),우성일(Sungil Woo),한상우(Sang Woo Hahn),황재욱(Jaeuk Hwang) 대한노인정신의학회 2015 노인정신의학 Vol.19 No.2
Objective:We aimed to explore the influence of depression on working memory in patients with mild cognitive impairment (MCI) and dementia. Methods:Clinical and neuropsychological data of 43 subjects with mild cognitive impairment (MCI) (n=17) and dementia (n= 26) who had visited Department of Psychiatry at Soonchunhyang University Seoul Hospital, were collected. The subjects were di-vided into depressed (n=18) and non-depressed (n=25) groups based on the Korean version of Short Geriatric Depression Scale. Two-way analysis of variance test was conducted to evaluate the influence of diagnosis (MCI and dementia), the presence of depres-sion and their interaction on working memory which was measured by digit forward and backward span test. Results:Among the patients with MCI, test score of digit backward span test in depressed group was significantly lower than in non-depressed group. However, among the patients with dementia, there was no significant difference in digit backward span test between depressed and non-depressed groups. Conclusion:This study suggests that the depression could deteriorate working memory measured by digit backward span test in patients with MCI, relative to in patients with dementia and it also implicates the diagnostic assessment for depression has clinically importance in patients with MCI.
신경생물학 및 고전적 조건화 이론을 이용한 공황장애의 정신분석적 접근
김민재,노양호,김채리,박진완,이연정,황재욱,우성일,한상우 한국정신분석학회 2015 精神分析 (Psychoanalysis) Vol.26 No.3
Panic disorder is an important psychiatric problem accompanied by intense anxiety arising from unexpected circumstances and difficult to differentiate from physical disease because of physical symptoms such as shortness of breadth, and palpitation. The role of the limbic system has been emphasized from recent studies of neurobiological mechanisms and pathogenesis of panic disorder. Meanwhile, the theory that describes mechanisms of panic disorder based on classical conditioning theory has been convincing. In the theory, the first panic attack is considered as an unconditioned stimulus (UCS). However, Freud, Klein, and Bowlby had pointed out that anxiety experiences and insecure attachments in early life could be an important cause of neurosis including panic disorder in later life. In this article, we regard anxiety experiences in early life as UCS of classical conditioning theory, to find connection with the neurobiological theory, classical conditioning theory and the psychoanalytic theory of panic disorder.
한국인에서 조현병과 Cannabinoid Receptor 1 유전자의 삼핵산 반복서열의 연합에 대한 연구
김지원,노양호,김민재,김채리,박병래,배준설,신형두,최인근,한상우,황재욱,우성일,Kim, Ji-Won,Roh, Yang-Ho,Kim, Min-Jea,Kim, Chea-Ri,Park, Byung-Lae,Bae, Joon Seol,Shin, Hyoung Doo,Choi, Ihn-Geun,Han, Sang-Woo,Hwang, Jaeuk,Woo, Sung-Il 대한생물정신의학회 2014 생물정신의학 Vol.21 No.3
Objectives Previous studies suggest that the cannabinoid receptor 1 (CNR1) gene could be an important candidate gene for schizophrenia. According to linkage studies, this gene is located on chromosome 6q14-q15, which is known to harbor the schizophrenia susceptibility locus (locus 5, SCZ5, OMIM 803175). The pharmacological agent delta-9-tetrahydrocannabinol (${\Delta}$-9-THC) seems to elicit the symptoms of schizophrenia. The association between CNR1 polymorphisms and schizophrenia is actively being investigated, and some studies have linked the AAT-trinucleotide repeats in CNR1 to the onset of schizophrenia. In this study, we have investigated the association between the AAT-trinucleotide repeats in CNR1 and schizophrenia by studying schizophrenia patients and healthy individuals from Korea. Methods DNA was extracted from the blood samples of 394 control subjects and 337 patients diagnosed with schizophrenia (as per the Diagnostic and Statistical Manual of Mental Disorders, fourth edition criteria). After polymerase chain reaction amplification, a logistic regression analysis, with age and gender as the covariates, was performed to study the variations in the AAT-repeat polymorphisms between the two groups. Results In total, 8 types of trinucleotide repeats were identified, each containing 7, 8, 10, 11, 12, 13, 14, and 15 repeats, respectively. $(AAT)_{13}$ allele was most frequently observed, with a frequency of 33.6% and 31.6% in the patient and control groups, respectively. The frequency of the other repeat alleles in the patient group (in the decreasing order) was as follows : $(AAT)_{13}$ 33.6%, $(AAT)_{14}$ 21.6%, $(AAT)_{12}$ 18.5%, and $(AAT)_{7}$ 11.1%. The frequency of the repeat alleles in the control group (in the decreasing order) was as follows : $(AAT)_{13}$ 31.6%, $(AAT)_{14}$ 24.5%, $(AAT)_{12}$ 17.2%, and $(AAT)_{7}$ 11.6%. However, there were no significant differences in the AAT-repeat polymorphisms of the CNR1 gene between the patient group and the control group. Conclusions Although our study revealed no significant association of the AAT-repeat polymorphism of the CNR1 gene with schizophrenia, it will serve as a good reference for future studies designed to examine the cannabinoid hypothesis of schizophrenia.