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이동현,Lee, Dong-Hyeon 대한수의사회 2012 대한수의사회지 Vol.48 No.2
저는 "동물병원 노무관리"라는 제목으로 강의를 할 노무법인 대명 소속의 이동현 노무사입니다. 본 강의는 노동법의 범위가 광대하므로 주요 노동법 규정을 알아봄으로써 동물병원 현장의 인사노무관리에 적극 활용할 수 있고 이를 통해 합법적이고 효율적인 인사노무관리를 함으로써 상생, 협력하는 노사 관계를 구축하고 기업경쟁력을 강화하는데 보탬을 됨을 목적으로 합니다. 설명의 순서는 5인 미만 즉 4인 이하 사업장에서 꼭 지켜야 할 주요 노동법규정 과 5인 이상 사업장에서 꼭 지켜야 할 주요노동법규정을 나누어 설명하도록 하겠습니다.
이동현,김태은,허덕현,허태훈,박선아,이태경,성기범,박정호 대한신경과학회 2012 대한신경과학회지 Vol.30 No.3
Background: The purpose of this study is to identify the differences of risk factors and stroke mechanism between early and late recurrence in patients with long-term antiplatelet therapy for stroke prevention. Methods: We enrolled 114 consecutive patients with recurrent infarction who had been taking antiplatelet agents regularly since previous noncardioembolic cerebral infarction. Total 81 patients (49 men and 32 women) were met to the inclusion criteria through standardized evaluation. Subjects were classified into two groups depending on the time-to-recurrence after antiplatelet therapy: early antiplatelet failure (within 2 years, n=41, hereafter as “EAF”) and later antiplatelet failure (after 2 years, n=40, hereafter as “LAF”). We investigated the differences of clinical factors between two groups using univariate and multivariate analysis. Results: Family history of stroke (29.3% in EAF vs. 10% in LAF, p=0.029) was more frequent in EAF group. Low HDL-cholesterol and High total cholesterol/HDL-cholesterol ratio were associated with the LAF group (p=0.042, 0.005respectively). Multivariate analysis showed that family history of stroke (OR=5.283, 95%CI 1.178-23.699, p=0.030) and previous infarction classified as large artery atherosclerosis (OR=8.497, 95%CI 1.444–50.015, p=0.018) were significant predictors for EAF whereas total cholesterol/HDL-cholesterol ratio (OR=2.002, 95%CI 1.183–3.389, p=0.010) was for LAF. Conclusions: This study suggests that family history of stroke and cerebral infarction due to large artery atherosclerosis are more responsible for the early recurrence while dyslipidemic condition is more related to the late recurrence during long-term antiplatelet therapy in patients with previous cerebral infarction.
李東炫 中央醫學社 1972 中央醫學 Vol.22 No.2
This is report of a case of primary mucocele occurring in the left maxillary sinus, which is supposed to be rare. This 32 years old male entered to the National Police Hospital on Oct. 2-1971 with complaints of a palpable mass in the left cheek. The external examination revealed that a walnut sized, moderately hard, and sound shaped mass which has slight fluctuation, was palpated on the left7 maxillary; region, however no tenderness could be demonstrated. Aspiration of the contents disclosed chocolate colored mucoid fluid, and negative finding were detected, in the nasal cavity by ant rhinoscopy. X-ray study of maxillary sinus showed slight cloudiness over the left maxillary sinus, without definite evidence of the bone destruction. Under suspiction of maxillary cyst exploratory operation(caldwell-luis operation approach) was performed and found that a large mucocele of maxillary sinus which, involving the ant and medical bony wall of the sinus. The whole mucosa was carefully separated and removed and a wide enough counter opening was made. Post operative course was satisfactory and no undesirabe sequela occurred up to date.
공작석, 백운석 및 방해석 혼합 탄산염 광물로부터 공작석 부유선별에 대한 포수제의 효과
이동현,김대성,이승호 한국자원공학회 2015 한국자원공학회지 Vol.52 No.1
The froth flotation of malachite from the carbonate ore which was mixed with dolomite (CaMg(CO3)2)60 wt%, calcite (CaCO3) 30 wt% and malachite (Cu2(OH)2CO3) 10 wt% was carried out. The sodium oleate orpotassium amyl xanthate (PAX) as a collector in flotation were used individually or together, and also carboxymethylcellulose (CMC) was used for depressant of dolomite and calcite minerals. When the sodium oleate was used,the flotation yield of the mixed ore was high but Cu grade of the concentrate was low because of low selectivity. On the contrary, when PAX collector was used, the flotation yield was about 9.0~10.1 wt% and the recoveryof Cu was 57.5~75.7% while the Cu grade of flotation concentrate was kept with high value of Cu 31.2~45.4wt%. In case of using sodium oleate and PAX together, although the Cu grade of concentrate was not highervalue of Cu 14~19 wt% compared to using only PAX, the recovery of Cu showed high value of 77.4~91.8%. 탄산염 광물인 백운석(CaMg(CO3)2), 방해석(CaCO3) 및 공작석(Cu2(OH)2CO3)을 6:3:1 무게비로 혼합한시료에 대하여 부유선별 실험을 수행하였다. 부유선별의 포수제로는 sodium oleate 또는 potassium amylxanthate(PAX)를 단독으로 사용하거나 sodium oleate와 PAX를 함께 사용하였으며, 백운석이나 방해석의 억제를위해 carboxymethyl cellulose(CMC)를 억제제로 사용하였다. sodium oleate를 사용하였을 때는 부선 산출율은높았지만 정광의 Cu의 함량은 낮았다. 반면에 PAX를 사용하였을 때는 부선 산출율은 9.0~10.1 wt%로 낮았지만정광의 Cu의 함량은 31.2~45.4 wt%로 높았다. 그리고 sodium oleate와 PAX를 함께 사용하면 PAX를 단독으로사용한 부선보다는 Cu 함량은 14.3~18.6 wt%로 높지 않았지만 77.4~91.8%의 높은 Cu 회수율을 나타내었다.