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제조업체 광물성분진의 총분진, 흡입성분진, 흉곽성분진과 호흡성분진의 농도
김용우,피영규,김현욱,김형아 가톨릭대학교 산업의학센터 2000 韓國의 産業醫學 Vol.39 No.2
This study was designed to estimate particle size distribution of airborne dust by an 8-stage cascade impactor, to compare concentrations of total dust by 37mm closed-face cassette with total dust, thoracic particle mass(TPM), inhalable particle mass(IPM) concentrations by an 8-stage cascade impactor and to estimate concentrations of respirable dust collected by cyclone in manufacturing factories. Total 85 sites in 44 factories were sampled from August 1, 1996 to December 31, 1997. The results were as follows: 1.The geometric mean concentration of total dust collected by 37mm closed-face cassette were 0.27-1.44 mg/㎥. The GM concentrations of total dust by impactor were 0.82-2.85 mg/㎥, of inhalable dust 0.63-2.24 mg/㎥, and of thoracic dust were 0.31-1.40 mg/㎥, respectively. 2.The analysis of particle size distribution showed bimodal patterns for almost all sampling sites studied. Geometric mean(GSD) diameters of the small mode were 0.515(1.577) ㎛ - 3.032(13.698) ㎛, while the large mode were 11.873(2.460) ㎛ - 19.774(2.606) ㎛, respectively. 3.The geometric mean(GSD) concentrations of respirable dust collected by cyclone were 0.08-0.46 mg/㎥. To evaluate health hazards from mineral dusts occurring in manufacturing industries, these results suggest the necessity of promulgating particle size-selective limit values and sampling methods such as IPM, TPM, and RPM.
박용욱,김형중,서중석 大韓法醫學會 1999 대한법의학회지 Vol.23 No.1
Wilms' tumor is the most common urinary tract neoplasm and one of the most frequent solid abdominal malignant tumors of childhood, usually diagnosed between the ages of 2 and 5 years. Typically, it is manifested as an asymptomatic unilateral or upper abdominal mass. Abdimonal pain after some traumatic incident, fever, anemia, hematuria and hypertension are other patterns of presentation. In a considerable number of these patients, pulmonary metastases are present at the time of primary diagnosis. But, the initial presentation of acute pulmonary tumor emboli without surgical manipulation is very rare. We describe a sudden unexpected infantile death case diagnosed as pulmonary tumor embolism preexisting Wilms' tumor. To our knowledge, this is the initial autopsy presentation of Wilms' tumor with tumor embolism as sudden and unexpected death in Korea.
한국판 임상가용 아동 및 청소년을 위한 외상후 스트레스장애 척도의 신뢰도 및 타당도 연구
구정일,김태형,은헌정,최말례,이선미,조수진,송옥선,김형욱 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.6
Objectives : This present study was conducted to explore the reliability and the validity of Clinician Administered PTSD Scale for Children and Adolescents Korean version (CAPS-CA) Mcthods : The Subjects were children and adolescents (8-13yrs) from different places: a certain elementary school, three orphanages, a general hospital, and two neuropsychiathc local clinics. Only subjects who experienced a catastrophic traumatic event were tested by CAPS-CA, CDI, RCMAS, and TSC. Rcsults : The range of correlations between item-criterion were .67-.84. The coefficients of internal consistency were .87. and test-retest reliability was .90, were all the coefficients in the proper range. Inter-correlations of CAPS-CA, CDI, RCMAS, and TSC scale showed significant correlation. TSC showed the highest correlation coefficient. CAPS-CA can be a useful clinician-administered diagnostic instrument for children and adolescents PTSD symptoms. Conclusion : The reliability and the validity of CAPS-CA were confirmed. CAPS-CA could be applied for diagnostic purposes of PTSD in children and adolescents.
Al₃Sc 나노 석출물이 ARB 가공한 Al-0.2 wt% Sc 합금의 고경각립계 형성에 미치는 영향
민복기,김형욱,강석봉 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.12
The cold rolled Al-0.2 wt% Sc alloy sheets were pre- heat treated: (1) as solution treated at 630℃ for 1 hour and (2) as artificial aged at 300℃ for 5 hours, and the following accumulative roll bonding was conducted up to the 8 cycles at ambient temperature. The interconnecting boundary spacing of the aged alloys was narrow and maintained constantly at each ARB cycle. While, the spacing of solution treated alloy was relatively broad and decreased rapidly with increasing ARB cycles. The fraction of high angle boundaries in both alloys increased gradually with increasing equivalent strain, however the age-ARB alloys showed relatively higher fraction of HAGBs than the solution treat-ARB alloys at the same strain levels. And the former shows faster development of lamellar structure than the later. These variations are attributed to the fact that the nano-scale, semi-coherent A13Sc hinders the migration of dislocation. However, those precipitates cannot apply pinning effect sufficiently during static recrystallization above 350℃ because the driving pressure for recrystallization overcomes the Zener pinning pressure. (Received September 30, 2004)
이재훈,김형국,조경연,임동욱,민형복 成均館大學校 科學技術硏究所 1997 論文集 Vol.48 No.2
Since testing of digital circuit is becoming increasingly important, many methodologies have been introduced to enhance design for testability (DFT). DFT was taken into account in the automated test procedure and improved reliability of the design. Both tasks are well suited for scan rule checker. This paper presents a scan rule checker for gate level digital circuits. The scan rule checker deals with basic rule check, basic scan rule check, muxed scan rule check, clocked scan rule check and lssd. Scan design informations were represented in the configuration file and libraries were modeled for the scan rule checker. It is an efficient way for the design for testability methodology.
조백기,박종갑,김형옥,김성욱,백승철,김진우,김시용,안규중,전재복,오지원,김낙인,이규석,오칠환,김수남,김상태,손숙자,신용우,김동석,이원우,권경술,서대헌,황규왕,이종석,고재경,강원형,정기양,최응호,김기홍,박석돈,강승주,함정희,명기범,김방순,구상완,김병수,원영호,김한욱,송은섭,정병수,노병인,홍창권,박장규,한지윤,김광중,구대원,김종민,김재홍,유희준,양경미 대한의진균학회 1998 대한의진균학회지 Vol.3 No.2
Background: Onychomycosis, especially toenail onychomycosis has become one of the common fungal infection and has historically been regarded as a cosmetic rather than medical problem by many patients, even by physicians. Recently, however, there are several reports that is a refractory disease which may cause a deleterious effect on patiets quality of life (QOL). Objective: The purpose of this study was to investigate the impact of toenail onychomycosis on QOL in Korea and to assess the chandes of QOL after treatment. Methods: Total 1004 patients with toenail onychomycosis which was confirmed by clinical findings and KOH preparation were were enrolled at 47 dermatologic centers in Korea, and interviewed with standardized QOL questionnaire before and after sytemic antifungal treatment. Responses to the questionnaire were scored by 5-point scale (1∼4) and averaged, and were analyzed for 5 dimensions of emotional impact, social impact, symptorn and functional impact, patients views concerning treatment, and relationship with doctor. Results: 1. Before and after treatment, the most serious impact was emotional dimension showing 1.90 and 1.30 in average score (AS), and social (AS: 1.14 and 0.83) and symptom and functional impact (AS: 1.05 and 0.92) was also affected. 2. In female rather than male, statistically more significant impact on patients QOL was observed in all dimensions. 3. After treatment, 3 of 5 dimensions were improved significantly - emotional dimension (AS : from 1.90 to 1.30), social dimension (AS: from 1.14 to 0.83), patients view concerning treatment (AS: from 1.34 to 1.02). 4. The drgree of patients satisfaction at the therapeutic effect was very high- 62.4% (immediately after treatment) and 65.8% (9 months affer initiation of treatment) of patients answered excellent or good. Conclusion: This study confirms that toenail onychomycosis has significant impact on the overall QOL of patients. Also the effect of antifungal therapy on patients QOL were watisfactory. Therefore, both doctor and patient should pay more attention to the treatment of onychomycosis. [Kor J Med Mycol 3(1): 115∼124]
Genome surgery using Cas9 ribonucleoproteins for the treatment of age-related macular degeneration
Kim, Kyoungmi,Park, Sung Wook,Kim, Jin Hyoung,Lee, Seung Hwan,Kim, Daesik,Koo, Taeyoung,Kim, Kwang-eun,Kim, Jeong Hun,Kim, Jin-Soo Cold Spring Harbor Laboratory 2017 Genome research Vol.27 No.3
<P>RNA-guided genome surgery using CRISPR-Cas9 nucleases has shown promise for the treatment of diverse genetic diseases. Yet, the potential of such nucleases for therapeutic applications in nongenetic diseases is largely unexplored. Here, we focus on age-related macular degeneration (AMD), a leading cause of blindness in adults, which is associated with retinal overexpression of, rather than mutations in, the VEGFA gene. Subretinal injection of preassembled, Vegfa gene-specific Cas9 ribonucleoproteins (RNPs) into the adult mouse eye gave rise to mutagenesis at the target site in the retinal pigment epithelium. Furthermore, Cas9 RNPs effectively reduced the area of laser-induced choroidal neovascularization (CNV) in a mouse model of AMD. Genome-wide profiling of Cas9 off-target effects via Digenome-seq showed that off-target mutations were rarely induced in the human genome. Because Cas9 RNPs can function immediately after in vivo delivery and are rapidly degraded by endogenous proteases, their activities are unlikely to be hampered by antibody-and cell-mediated adaptive immune systems. Our results demonstrate that in vivo genome editing with Cas9 RNPs has the potential for the local treatment for nongenetic degenerative diseases, expanding the scope of RNA-guided genome surgery to a new dimension.</P>
Kim, Joo Young,Kim, Min-Sun,Kim, Ki-Suk,Song, Ki-Byung,Lee, Seung Hun,Hwang, Dae Wook,Kim, Kyu-pyo,Kim, Hyoung Jung,Yu, Eunsil,Kim, Song Cheol,Jang, Hyeung-Jin,Hong, Seung-Mo Wolters Kluwer Health, Inc. All rights reserved. 2015 The American journal of surgical pathology Vol.39 No.5
Pancreatic neuroendocrine tumors (PanNETs) produce variable peptide hormones. The expression status of some hormones has been linked to the biological and clinical behaviors of PanNETs. A total of 226 surgically resected PanNETs were selected. Immunolabeling for peptide hormones was compared with various clinicopathologic factors, including patient survival. Expression of insulin, glucagon-like peptide 1, glucagon, gastrin, somatostatin, and serotonin were observed in 56 (24.8%), 41 (18.1%), 25 (11.1%), 5 (2.2%), 5 (2.2%), and 4 (1.8%) cases, respectively. Expression of 1, 2, and 3 hormones was noted in 70 (31.0%), 28 (12.4%), and 3 (1.3%) cases, respectively; 125 cases (55.3%) were negative for all hormones. PanNETs with insulin and glucagon-like peptide 1 expression were associated with a lower grade, smaller size, lower pT and pN classifications, absence of lymphovascular invasion, and lymph node metastasis and had better survival by univariate analysis, whereas PanNETs with gastrin expression were associated with a higher grade, larger size, higher pT and pN classifications, presence of lymphovascular invasion, and lymph node metastasis and had worse survival. Gastrin expression, increased age, and tumor grade were negative prognostic factors in multivariate analysis. As the number of hormones expressed increased, the survival rate of PanNET patients increased. In summary, PanNET patients showing insulin or glucagon-like peptide 1 expression and increased numbers of expressed hormones had a better survival outcome by univariate analysis, whereas gastrin expression was a negative prognostic indicator in surgically resected PanNET patients.