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姜弘植,車喆煥 고려대학교 의과대학 1974 고려대 의대 잡지 Vol.11 No.1
This study was conducted to evaluate the threshold limit value of the atmospheric gas mixture in the working environment and organic solvent poisoning due to the industrial organic solvents content of benzene, toluene and the others. For this purpose, the author had investigated the hematological changes, the excreted amount of phenol and hippuric acid in the urine, the air concentration of benzene and toluene in the working environment and the duration of exposure to the above substance with the test subjects of 132 workers, 72 males and 60 females who are working in rotogravure printing industries and paint manufacturing industries. The methods which were used are as following: 1. Air concentration of benzene and toluene; By using Maffet's method after 3 hours of exposure at the site of working 2. Quantitative analysis of phenol and hippuric acid in urine; a. Excretion of phenol by Walkley's method b. Excretion of hippuric acid by Ogata's method 3. Hematologic examination; a. Hemoglobin by Cyanmethemoglobin method b. Blood cell count by Neubauer's chamber method after using Gower solution c. Hematocrit by Microhematocrit centrifuge The results obtained were as following: 1. All of the industries were over the threshold limit value of gas mixture and the range were 1.03-8.07. 2. Phenol excretion in urine was correlated to concentration of benzene in air with coefficient of 0.704 in male and 0.546 in female. The regression equations were y=3.86x+21.9 in male and y= 3.33x+28.1 in female. Hippuric acid excretion in urine was correlated to concentration of toluene in air with correlation coefcient of 0.692 in male and of 0.643 in female. The regression equations were y=l. 67x+295 in male, y=l.78x+278 in female. 3. Phenal and hippuric acid in urine were not correlated to duration of service months with correlation coefficient of 0.07 in male and 0.139 in female. 4. Hematological changes were correlated to concentration of benzene and toluene in air, such as; Hemoglobin; Male : y=-0.373x+ll. 3, r=-0.843 Female: y=-0.354x+10.1, r=-0.745 Red Blood Cells; Male : y=-7,935x+495.5, r=-0.648 Female: y=-5,351x+375.4, r=-0.549 Hematocrit; Male : y=-0.836x+42.5, r=-0.593 Female: y=-0.736x+37.2, r=-0.634 White Blood Gells; Male : y=-19.35x+4,02.57, r=-0.735 Female: y=-21.23x+3,964.7, r=-0.637 5. Hematological changes were correlated to duration of service months, such as; Hemoglobin; Male : y=-O. 233x+13.6, r=-0.678 Female: y=-0.l59x+11.58, r=-0.807 Red Blood Cells; Male : y=-3.46x+478.1, r=-0.595 Female: y=-2,912x+432.6, r=-0.534 Hematocrit; Male : y=--0.325x+42.9, r=-0.560 Female: y=-0.247x+38.3, r=-0.597 White Blood Cells; Male : y=-10,936x+4,114.5, r=-0.793 Female: y=12.13x+3,946.5, r=-0.583 6. Though benzene and toluene are singularly under the threshold limit value, in accordance with the law of mixed gas threshold limit value, an excess value of above 1.0 may induce occupational disease in the suspected cases.
姜弘植,金結挂 대한신경정신의학회 1968 신경정신의학 Vol.7 No.1
The definition and diaggnosis of childhood schizophrenia are more difficult and various than the schizophrenia of the adults. The authors presented a case of the childhood schizophrenia and several discussions about the diagnostic criteria and the prognosis of the childhood schizophrenia. A male child of 5 years old was admitted t.o the National Mental Hospital, because he was mute9 overtly excited, assaultive and hyperactive. During admission of about 3 months and the period of one years after discharge from the hospital, the child became mild and somewhat cooperative but the persistent mutism was not improved. At the conclusion, the authors were impressed that the improvement of the difficulties of treatment and poor prognosis of childhood schizophrenia must be gained by the enthusiastic studies of child patient.
결핵성과 화농성 척추염의 감별:척추주위 종괴의 자기공명영상 특성
강홍식 대한영상의학회 1996 대한영상의학회지 Vol.34 No.6
Purpose : To determine the MR imaging findings for the differentiation of tuberculous spondylitis(TS) andpyogenic spondylitis(PS) with emphasis on the shape and MR signal characteristics of paraspinal mass. Materialsand Methods : We obtained spin-echo T1- and T2-weighted MR images of 63 surgically proved cases of TS and 15 casesof PS. Gadopentetate dimeglumine(Gd)-enhanced T1-weighted MR images in 37 cases of TS and in all 15 cases of PSwere also obtained. Paraspinal mass formation, the size, shape and Gd-enhancing pattern of this mass andpenetration of paraspinal ligaments by inflammatory tissue were analyzed. Results : Paraspinal mass was found inboth TS(63/63) and PS(9/15). The mean longitudinal dimension of this mass was 4.3 vertebral body heights in TS and1.8 in PS. The margin of the mass was smooth in TS due to subligamentous spread of inflammation, while PS showedan irregular margin and invaded the para-aortic or para-caval space(9/15) due to penetration of inflammatorytissue through the paraspinal ligament. In the lumbar spine, however, TS showed focal penetration of theparaspinal ligament and formed psoas abscesses. After Gd enhancement, TS showed irregular thick or uniformly thinrim enhancement(35/37), suggesting caseation necrosis and cold abscess, while PS showed diffuse enhancement,suggesting abundant granulation tissue. Conclusion : MR imaging findings helpful for the differentiation of TS andPS were size, shape and enhancing pattern of paraspinal mass and penetration of paraspinal ligament byinflammatory tissue.