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이명제,임홍섭,유봉환,Lee, Myeong-Je,Im, Hong-Seop,Yu, Bong-Hwan 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.4
Ceramic, PCD and CBN tools are available for the difficult-to-cut-materials such as hardened carbon tool steel, stainless steel, Inconel 718 and etc. Ceramic tools are likely to be chipped and abruptly broken before the appearance of normal wear in turning. Ceramic tools are suitable for continuous in turning, not for intermittent in milling. In this study, TiN/TiCN multi-layer coated ceramic tools were found to restrain the chipping, breaking and early fracture and to increase the critical cutting speed owing to TiN/TiCN multi-layer coating in Arc Ion Plating of PVD method.
B 형 간염시 지연성피부과민반응과 T - Cell Subset 에 관한 연구
한상영(Sang Yeoung Han),김치호(Chi Ho Kim),임홍섭(Hong Seop Im),김홍범(Hong Bum Kim),양웅석(Ung Suk Yang),문한규(Han Gyo Moon) 대한내과학회 1988 대한내과학회지 Vol.35 No.3
N/A Hepatitis B virus(HBV) may cause either acute or chronic infection. As HBV is not directly cytopathic for infected hepatocytes, host determined immunologic response is considered a likely pathogenetic mechanism in this disease. The cell-mediated immune response to component antigens of the virus plays an important role in the lysis of infected hepatocytes in acute and chronic HBV-induced hepatitis. This immune response to the virus may be regulated by the balance of inducer (helper) to suppressor T-cell activity. Peripheral blood T lymphocytes and T-cell subsets were analyzed in patients with HBsAg-positive acute hepatitis (AVH) and chronic active hepatitis (CHA). To assess cell- mediated immunity in hepatitis B, the multitest device simultaneously applies seven standardized recall antigens and a 70% w/v glycerine diluent control. Delayed cutaneous hypersensitivity (DCH) responsive- ness is quantified by a score (the sum of the diameters of the indurations) at 48 hours. The OKT4/OKT8, ratio was significantly lower in the A VH and CAH groups than in the control group, and the patient group had an average score in CMI test significantly lower than that of the control group. In conclusion, defective T lymphacyte function in HBsAg-positive AVH 8r CAH patients has been suggested. The multitest system appears to be a safe, rapid and painless means of evaluation DCH, with the potential for detecting changes in cell-mediated immunity in hepatitia B, Additional studies, with longer follow-up periods, will be necessary to assess cell- mediated immunity (CMI) in hepatitis B with the multitest CMI kit.
오창용(Chang-yong Oh),유승우(Seung-Woo Yoo),임홍섭(Hong-seop Im) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
It is important for steel industries to reduce fuel consumption and pollutant emissions simultaneously. In this study, oxygen-air premixed combustion technology was experimentally studied to investigate its effects on flame temperature and NOX concentration using 2 staged burner. And applying method for a furnace in operation is also considered numerically. From the results, using 2 staged combustion enables both increasing flame temperature and controling the formation of NOX. And a oxygen injection nozzle design for homogeneous mixing between combustion air and oxygen is supposed for the technology application in a reheating furnace.
A 형 혈우병환자에서 방광과 누공을 형성한 혈우병성 위종양 1 예
하철봉,김정완,김치호,송근암,조군제,한상영,나하연,임홍섭,박희옥,이병구 대한내과학회 1988 대한내과학회지 Vol.35 No.4
A hemophilic pseudotumor is a rare complication of hemophilia, defined as a progressive cystic swelling involving muscle, produced by recurrent hemorrhage and accompanied by roentgenographic evidence of bone involvement. Its treatment is very difficult because of the danger of sepsis and continued hemorrhage and necrosis. The best treatment is the prevention of hemorrhage in emophiliacs. Recently, we experienced a hemophilic pseudatumor in a hemophilia A patient with formed a fistula with the urinary bladder, This 36 year old man, diagnosed as a hemophilia at age 3 years, presented with abdominal distension, abdominal pain and hematuria. The abdominal CT scan and cystogram showed a huge right lower abdominal mass which had eroded the right iliac bone and formed a fistula with the bladder. After subs-titutional therapy, the patient improved and was discharged.
이민기,신영기,박순규,허재영,도창호,조군제,임홍섭,문원국,최장락,이헌직 대한내과학회 1990 대한내과학회지 Vol.39 No.2
Tuberculous osteitis of the skull is an uncommon condition, first reported by Reid of Erlangen, who described two cases in 1842. By 1933. only 220 cases had been recorded in world literature (Strauss). It occurs in approximately 1%. of all patients with tuberculous osteitis and is diagnosed by clinical manifestation, skull roentgenogram, smear and culture of aspirated pus, and biopsy of granulation material. It responds readily to chemotherapy and the prognosis is favorable. To the best of our knowledge, the condition has not been previously reported in Korea. But recently we experienced a case of tuberculous osteitis of the skull in an 18-year-old male patient who complained of dyspnea, chest pain, multiple swelling of scalp and right eye proptosis. The patient was treated with antituberculous medication and discharged with his condition improved.