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한국산 날치과(Beloniformes , Exocoetidae)어류 5 종의 분류학적 재검토
김종만,김진구,유정화,조선형,명정구,강충배,김용억 한국어류학회 2001 韓國魚類學會誌 Vol.13 No.2
Taxonomic review of the five flyingfishes, Parexocoetus mento (Valenciennes), Cheilopogon agoo (Temminck et Schlegel), Cheilopogon heterurus doederleini (Steindachner), Cheilopogon cyanopterus (Valenciennes), Hirundichthys oxycephalus (Bleeker) were carried out based on samples collected from the South sea and around sea of Jeju Island of Korea from 1996 to 1998. Parexocoetus mento (Valenciennes) and Cheilopogon cyanopterus (Valenciennes) were revealed as the unrecorded species in Korea, which were named as "Men-to-hwang-nal-chi" and "Ki-geom-nal-chi" respectively. Parexocoetus mento is differed from P. barchypterus in having no chin barbels in juveniles, and Cheilopogon cyanopterus is distinguished from C. agoo in the branched form of pectoral fin rays and from C. heterurus doederleini in the numbers of the dorsal fin ray and the color of pectoral fins.
신영진,신현길,김택성,유기수,정태수,유평열,정철훈,이훈,신영신,홍관준 한국센서학회 1993 센서학회지 Vol.2 No.1
A CdS single crystal was grown by using sublimation method. Lattice constants, a_o and c_o, obtained by using extrapolation were 4.1318 Å and 6.7122 Å, respectively. The carrier density was ∼10^(23) m^(-3) and the mobility was 2.93X10^(-2) ㎡/V-sec from measured Hall data at room temperature. The mobility has a increasing tendency in proportion to T^½ from 33 K to 150 K and a decreasing tendency in proportion to T^(-2) from 180 K to room temperature. The short wavelength band peak measured from photocurrent was due to intrinsic transition, and the energy value of this peak was equal to the energy band gap of CdS photoconductor.
Mycobacterium Avium - in tracellulare Complex 와 M . Fortuitum 에 의한 폐항산균증(肺抗酸菌症) 3예
김상재,홍수표,배길한,김성진,진병환,정충모 대한미생물학회 1982 大韓微生物學會誌 Vol.17 No.1
Two cases of pulmonary disease in a 54 year-old female and a 70 year-old male patient due to Mycobacterium avium-intracellulare complex (MAIC) and a case of pulmonary infection in a 69 year-old male patient due to M fortuitum (MF) were found recently in this institute. All three patients bad a long history of anti-tuberculous chemotherapy because they were initially diagnosed as pulmonary tuberculosis. A 70 year-old male patient infected with MAIC had an unsuccessful chemotherapy history of isoniazid (INH), para-aminosalicylic acid (PAS) and streptomycin (SM) with an incomplete, temporary, symptomatic improvement, for three years since 1964 when he was first diagnosed as pulmonary tuberculosis on physical examination. A 54 year-old female patient infected with MAIC also had an unsuccessful chemotherapy history with the various anti-tuberculous drugs since 1958. Both patients discharged large number of MAIC in their sputum specimens for at least more than one year, but no M tuberculosis at all. A 69 year-old male patient infected with MF was diagnosed as moderately advanced pulmonary tuberculsis in 1977. Combined chemotherapy with INH+PAS+pyrazinamide (PZA) improved his clinical symptoms, however, his chest radiograph was deteriorated again in 1980 one year after he stopped therapy. Therefore he started chemotherapy again with INH+ethionamide (TH)+cycloserine(CS) but no improvement was noticed. MF was cultured from his sputum in August 1983 and he continuously discharged the same baeilli until last examination of January l982. Whether all three patients were initially infected with nontuberculous mycobacteria or complicated with predisposing tuberculosis was not clear because there were no reliable bacteriological Examination records.
다이캐스팅한 SiC 입자강화 알루미늄 복합재료의 피로균열 전파특성
김송희,윤여범,이기호,오준도,주희위,이지환 대한금속재료학회(대한금속학회) 1998 대한금속·재료학회지 Vol.36 No.8
This study is to investigate the effect of load ratio on fatigue crack of die-cast SiC particulate aluminum composites. Fundamental fatigue crack propagation tests were performed with sub-sized C-T specimens at a load ratio of 0.1, 0.3 and 0.5 respectively. Crack closure measurements were conducted for explaning the effect of load ratio on fatigue crack growth. The experimental results showed that the fatigue crack growth rate increases with the load ratio, especially at near threshold. The composite reinforced with 20 vol.% SiC particles was better in fatigue crack growth resistance than that with 10 vol.% SiC particles. Through the measurement of Kop and ΔK at various R ratios the concept of effective stress intensity factor range ratio. U was reviewed to evaluate the stress ratio effect on fatigue crack growth. Relationships between U and variables such as ΔK and R were obtained empirically so that we could predict ΔK_(eff) that is of critical importance for the prediction of fatigue crack propagation rate.
조화룡,강전독정,전명순,김성작,도변만구,좌등비여지,전정수,지헌철,미지화부 한국지형학회 1994 한국지형학회지 Vol.1 No.2
梁山斷層系의 중앙부에 대하여 항공사진 판독과 현지 지형, 지질 조사를 통하여 다음과 같은 사실이 밝혀졌다. 1. 梁山斷層系는 第脚紀(後期)에도 활동을 반복하고 있는 活斷層이다. 따라서 이 단충은 그 좌우에 분포하는 高位, 中位, 低位의 각 河岸段丘面 모두를 상, 하방향으로 누적적으로 변화시키고 있다. 2. 梁山斷層系의 중앙부에서 段丘面의 變位로 미루어 볼 때 동측이 상대적으로 隆起하고 있다. 이것은 이 지역의 中地形的 山地高度의 분포와는 逆이다. 3. 斷層線온 현저하게 直線的으로 연장되어 있고, 斷層面은 거의 수직이다. 이 斷層系에 수반되는 破碑帶도 폭 수십 m 이상으로 넓고, 현저한 斷層粘土帶와 變形帶를 동반한다. 4. 偏平礫의 변형 형태에 의하면 走向移動이 탁월한 단층운동이 추정된다. 斷層粘土帶의 破碎物質의 관찰에 의하여 右橫變位走向移動(right strike slip)이 인정된다. 5. 이들의 특징으로부터 梁山斷層系는 走商移動(右橫變位)이 탁월한 活斷層으로 판명되었다. 段丘面 및 堆積物의 추정 계산치로부터 梁山斷層系의 평균 상, 하 變位 速度는 0.02-0.03㎜/y. 정도이고, 右橫變位의 평균 속도는 적어도 C급 상위(0.05∼0.1㎜/y.) 정도이든지 이것을 약간 상회하는 정도일 것으로 추정된다. 6. 低位 및 最低位의 段丘面에서는 上位變位를 밝히기 어려웠다. 이들의 段丘面 위에는 논으로 이용되고 있기 때문에 오랜 기간 동안 인공적으로 改變을 받아왔으며 이들 단구면 위에서 1 ∼2m 정도의 상·하 변위가 있었다고 해도 인공적 개변이 이를 지워버렸을 것이다. 따라서 이들의 최근에 형성된 단구면에서는 변위의 유무를 언급할 수 없었다. Many distinct lineaments have been recognized by Landsat images In Korea Peninsula. The Yangsan fault system situated in the southeastern part of Korea is especially linear, continuously traceable for a long distance(about 200㎞), and particularly remarkable among these linearnent. The topographic expression of the Yangsan fault system is derived from the straightly stretching fault valley with wide shattered zones in the direction of NNE-SSW. This fault system extends for about 200㎞ from the mouth of the Nagdong River west of Busan in the south to Yeondong in the north, and geologically separates Korean Peninsula from the East Sea. The amount of horizontal displacement may reach 30㎞. It is recognized as one of the most important faults in Korea Peninsula. From the interpretations of aerial photographs, and field surveys along the central part of the Yangsan fault system, the main results are summarized as follows; 1. The Yangsan fault system has repeatedly moved in the late Quaternary. The lower to higher river terrace surface on this system show cumulative vertical offsets. 2. The vertical component is upthrown on the east side from considering the terrace offset and the distribution of the mountainous lands. This vertical movement is reverse to the topographical situation on the meso-scale. 3. The fault trace is extremely straight. The fault plane is almost vertical. The shattered zone exceeds tens of meters in width with a remarkable fault gouge. 4. The longer axis of flat clasts within the gravel excavated in the exploratory trench showed the rearrangement along the fault. The predominantly right-lateral movements were recognized as the elongation of clayey parts and breccias in the fault gouge. 5. From these characteristics, the Yangsan fault was clarified to be active with predominantly right-lateral movement. Estimated ages of terraces and its deposits give average rates of vertical and right slip on the Yangsan fault system at about 0.02~0.03&/y., respectively. 6. The fault topography is not found on the lower terraces. As the surface of lower fault scarplets less than a few meters high might have been modified or destroyed by the human actions. Therefore, we cannot mention the existence of the younger movement on the lower terraces.
제 2 형 당뇨병에서 미세혈관 합병증과 대혈관 합병증의 대비
강문호,이기영,정연실,김홍규,서찬종,송광식,박혜영,이원기 대한당뇨병학회 2001 Diabetes and Metabolism Journal Vol.25 No.2
Background: Type 2 diabetes is a heterogeneous disease. As to its complications, microangiopathy predominantly develop in some patients while macroangiopathy is more predominant in others. Therefore, this study was performed to identify the factors associated with such dissociation. Methods: Type 2 diabetic patients were classified into the macro and microangiopathy groups by carotid intima-medial thickness (IMT) and the presence of severe diabetic retinopathy. Patients with IMT ≤ 0.83 mm and severe NPDR or PDR were assigned to microangiopathy group; those with IMT 0.84 mm and no diabetic retinopathy were assigned to macroangiopathy group. Of 95 patients studied, 14 were classified as microangiopathy group and 20 as macroangiopathy group. Results: When the microangiopathy and macroangiopathy groups were compared, the microangiopathy group were significantly younger at the time of examination and at the onset of diabetes, and had longer duration of diabetes. Percentage of patients receiving insulin treatment was significantly higher and plasma C-peptide significantly lower in the microangiopathy group. However, HDL-cholesterol levels were significantly lower in the macroangiopathy group. Furthermore, the multiple logistic regression analyses revealed that younger onset of type 2 diabetes was an independent factor that was associated with the acceleration of microangiopathy. Conclusion: This study suggests that the age at onset of diabetes is an important independent risk factor that is associated with predominant development of microangiopathy in type 2 diabetic patients.
400 계열 스테인레스 스틸 분말을 사용한 ABS Sensor Ring 개발
임종국,양현수,김경환,곽창섭 한국산업안전학회 1998 한국안전학회지 Vol.13 No.3
ABS sensor ring has been manufactured by P/M method using 400 series ferrite stainless steel. The results are as following: It is supposedly sufficient to use for control computer due to good experimental results of magnetic characteristics. Compared with sensor ring made by iron, 400 series ferrite stainless steel has shown a good corrosion resistance without an addition surface treatment. Thus the decreasing production process has been obtained. As a result of hardness and tensile test, 400 series ferrite stainless steel shown a good endurance when it is combined to C/V joint, and has a good hardness properties endurable to sand and pebble impact.
이정상,신영태,정순일,고창순,김성권,표희정,권인순 대한핵의학회 1980 핵의학 분자영상 Vol.14 No.2
저자들은 1979년 3월부터 1980년 10월까지 서울대학교병원내과에 입원하여 만성신부전증으로 진단받고 혈액투석요법을 받지 않은 환자 15예, 혈액투석요법을 시행중인 환자 39예 및 신장이식술을 받고 신장능이 호전된 환자 23예에서 혈청 CEA치를 방사면역측정법으로 측정하여 정상대조군과 비교하여 다음과 같은 결과를 얻었다. 1) 정상 성인 65명의 혈청 CEA치의 범위는 1.0∼4.3 ng/ml이었으며 평균은 1.6±0.66 ng이었다. 2) 혈액투석요법을 시행치 않은 만성신부전증 환자 15예의 혈청 CEA치는 0.3∼8.3 ng/ml이었고 평균은 3.6±2.10 ng/ml로써 정상대조군에 비하여 유의하게 증가되어 있었다(p$lt;0.001). 3) 혈액투석요법으로 치료중인 만성신부전증 환자 39예의 혈청 CEA치는 0.7∼6.7 ng/ml로 평균이 3.0±1.52 ng/ml이며, 정상대조군에 비하여 유의하게 상승되어 있으나(p$lt;0.001), 혈액투석을 받지 않은 환자군과는 유의한 차이가 없었다. 4) 신이식 환자 23예의 혈청 CEA치의 분포는 1.8∼10.8 ng/ml이고 평균은 3.8±1.96 ng/ml로 역시 정상대조군에 비하여 유의하게 증가되어 있으나(p$lt;0.001), 만성신부전증 환자군과는 유의한 차이가 없었다. 5) 이상의 혈청 CEA치가 정상범위 이상으로 상승된 49명��환자중 이학적 소견이나 검사소견상 악성종양은 발견되지 않았다. The serum CEA levels were measured by radioimmunoassay technique in 15 patients with chronic renal failure, who were not treated with hemodialysis, in 39 patients under hemodialysis and in 23 patients who received renal transplantation. The results were compared with those in 65 normal adults and the following results were obtained. 1) Serum CEA concentrations in 65 normal adults were in the range of 1.0 to 4.3 ng/ml with a mean value of 1.6±0.66 ng/ml. 2) Serum CEA concentrations in 15 chronic renal failure patients who were not treated with hemodialysis, were in the range of 0.3 to 8.3 ng/ml with a mean value of 3.6±2.10 ng/m1 which was significantly higher than those of normal controls(P$lt;0.001). 3) Serum CEA concentrations in 39 chronic renal failure patients under hemodialysis were also much higher than normal controls(p$lt;0.001), but not significantly different from those of the patients who were not under hemodialysis(P$gt;0.05). 4) In 23 patients who received renal transplantation, serum CEA levels were snificantly higher than normal controls(P$lt;0.001), but not significantly different from those of chronic renal failure patients.
갑상선자극 호르몬 분비에 대한 Dopaminergic Control에 관한 연구
이정상,이문호,고창순,김응진,김명덕 대한핵의학회 1978 핵의학 분자영상 Vol.12 No.2
1978년 4월부터 1978년 8월사이에 서울대학교병원 내과에 내원하였던 원발성 갑상선기능저하증 환자 9명과 일반신체검사 및 갑상선기능검사상 전혀 이상이 발견되지 않은 의과대학생 6명과 수련의 1명 총 16명을 대상으로 Dopamine 수용체를 선택적으로 차단하는 Metoclopramide와 Dopamine 수용체를 선택적으로 자극하는 Bromergocryptine(CB-154)을 각각 혹은 함께 투여해서 다음과 같은 결과를 얻었다. 1) Metoclopramide(Moxolonⓡ) 10mg을 정맥으로 주사했을때 원발성 갑상선기능저하증 환자들에서는 투여후 20분에 말초혈액에서 갑상선자극호르몬이 통계학적으로 유의하게 증가되었으며, 60분에도 계속 증가되었다. 그 이후 180분까지 계속 증가된 장태를 유대했으며, 중증보다 경증에서 더욱 현저하게 증가되어 나타났다. 그러나 정상인에서는 이러한 증가가 나타나지 않았다. 2) Bromergocryptine(CB-154)을 2mg 경구투여했을때 원발성 갑상선기능저하증 환자들에서는 투여후 120분에 말초혈액에서 갑상선자극호르몬이 현저하게 감소되었고, 240분 및 360분까지 계속 감소되었으며, 중증보다 경증에서 더욱 현저하게 감소되어 나타났다. 그러나 정상인에서는 이러한 감소가 나타나지 않았다. 3) Bromergocryptine(CB-154) 2mg을 경구투여한 후 120분에 Metoclopramide(Moxolonⓡ) 10mg을 정맥 주사했을때 원발성 갑상선기능저하증 환자들에서는 Bromergocryptine을 투여한 후 120분에 말초혈액에서 갑상선자극호르몬이 감소했으며, Metoclopramid를 투여한 후에 약간 증가하는 추세였으나, Metoclopramide를 단독으로 투여했을 때와 같은 현저한 증가는 나타나지 않았으며, 정상인들에서는 Bromergocryptine 및 Metoclopramide를 투여했을때 뚜렷한 증가나 감소는 보이지 않았다. 4) 생리식염수 2ml를 정맥주사했을 때 원발성 갑상선기능저하증 환자들 및 정상인들에서 갑상선자극호르몬이 말초혈액에서 뚜렷한 증가 내지 감소는 보이지 않았다. 5) Metoclopramide와Bromergocryptine을 각각 혹은 함께 투여했을때 및 생리염수를 투여했을 때 혈중 Triiodothyronine 및 Thyroxine치는 각각의 기저치들에 비해 통계학적으로 유의한 증가나 감소를 보이지 않았다. 이상의 결과에서 갑상선자극호르몬의 분비가 Dopaminergic Control을 받는다는 사실을 알 수 있었다. 본 연구를 실시함에 있어 물심양면으로 협조해주신 동아제약에 사의를 표하는 바이다. To e1ucidate the depaminergic control of T.S.H. secretion, we analized the pattern of T.S.H secretion in seven normal controls and nine primary hypothyroid subjects, before and after single or combined administration of specific dopaminergic receptor blocker, metoclopramide, and specific depaminergic receptor stimulant, bromergocryptine (CB-154). The results obtained were as follows: 1) There was a significant rise in T.S.H. levels after intravenous injection of metocioramide(10mg) in hypothyroid subjects. But there was no significant rise in T.S.H. levels in normal controls. The T.S.H. response to metoclopramide varied considerably, being large in mild cases and small in severely hypothyroid subjects. 2) There was a significant fall in T.S.H. levels after oral administration of bromergocryptine(2mg) in hypothyroid subjects, but there was no significant fall in T.S.H. levels in normal controls. 3) There was no significant fluctuation in T.S.H. levels after combined administration of both metoclopramide and bromergocrytine. 4) There was no significant fluctuation in T.S.H. levels after intravenous injection of normal saline(2ml) in both hypothyroid and normal subjects. 5) There was no significant change in serum T3 and T4 after administration of metoclopramide and bromergocryptine respectively and serially. These data support the fact that there is a dopaminergic control in the secretioI1 of T.S.H. in the human.