학생정신건강검진 시범운영사업에 따른 추진방안

김현정,김윤영,이혜숙,현미나,남동현,김상원,안동현 韓國學校保健學會 2009 韓國學校保健學會誌 Vol.22 No.1

Purpose: The purpose of the study was to·find the strategies of mental health screening in school. Based on the literature review, we discuss the importance of screening students in schools for mental health problems. Methods: Data from the 2008 Korean Mental Health Screening in Schools(2008-KMHSS) are used to estimate the outline of this screening. We administered the questionnaire for satisfaction of 2008-KMHSS for students(N=1,280), parents(N=2,672), school nurses(N=75), teachers(N=685), district personnels(N=6), and mental health center staffs(N=37). Also we interviewed a part of them by telephone and e-mail. And we reviewed the tools and methods for screening students for emotional/behavioral problems. Results: Mental health screening in schools is a very important, yet worrisome, agenda that is in its very early stages. From the 2008 Korean Mental Health Screening in Schools, 9,588 students(12.9%) needed more evaluation in the first stage. Of these, 6,910(72.1%) completed the second stage screening. In this sample, 1,975(28.6%) utilized the mental health services in school or community. 38.3% of students and 43.7% of their parents notified the2008-KMHSS. But only 12.1% of students and 10.9% of their parents dissatisfied with the screening. 9.9% of teachers and 22.7% of school nurses dissatisfied with the screening. Among them the school nurses were mostly dissatisfied, and they complained work burden from KMHSS. Mental health center staffs complained similar issues. The Children's Problem-behavior Screening Questionnaire(CPSQ) and Adolescents' Mental-health & Problem-behavior Screening Questionnaire(AMPQ) were compatible to screen students in schools for mental health problems in first stage. Conclusion: Mental health screening in schools needs careful planning and implementation. For successful mental health screening in schools, several elements need to be considered: careful planning, collaboration, staff training, and integrative mental health programs and services in community or schools.

기포부상분리법에 의한 Cu(Ⅱ)의 제거에 있어서 유동특성에 관한 연구

김현수,박주량,이승무 연세대학교 산업기술연구소 1985 논문집 Vol.17 No.1

This investigation was carried out to study the dynamic characteristics of the removal of Cu(II) from wastewater by the technique of foam fractionation, using sodium-dodecylbenzenesulfornate (DBS) as a foaming agent. The surface excess concentration of Cu(II) with the change of DBS concentration in feed solution and superficial gas velocity was obtained by measuring foam diameter. The value of HTU with the change of DBS concentration and superficial gas velocity was determing by measuring superficial liquid velocity. The experimental results are obtained as follows: 1. When Cu(II) concentration in feed solution is constant, the surface excess concentration of Cu(II) increased as DBS concentration increased. But decreased as superficial gas velocity increased. 2. Equilibrium constant (Tcu/Cw) between the surface excess concentration of foam and the concentration of interstitial liquid increased as DBS concentration in feed solution increased. However it was not affected by the change of superficial gas velocity. 3. For the superficial gas velocity above 10cm/min, the empirical equation was derived as follows: HTU = 2 exp [0.642(??) - 0.19(??)] where, C??(DBS) denotes the DBS concentration in feed solution, and v is the superficial gas velocity.

칼슘과 아연으로 치환된 Y0.8 Pr0.₂ Ba₂ Cu₃ O7_δ 의 전기 및 자기적 성질에 관한 연구

김성재,전인,박영민,강재필,노태호,박현진,최숙자,송승기 명지대학교 자연과학연구소 1996 자연과학논문집 Vol.14 No.-

전이온도가 72K인 고온초전도체 Y?P?B?Cu?O?에서 초전도성을 감소시키는 Pr원소자리에 Ca과 Zn를 적당히 치환시켜 자기적 성질을 연구하였다. 초전도 전이온도(Tc)는 Ca이 치환된 시료의 경우 80~85k의 범위에서 측정되었으며, Zn가 치환된 경우에는 35~49K의 값을 보였다. 비저항의 온도 변화로부터 결정된 전기적 전이온도는 온도에 대한 자기모우먼트으 변화에서 구한 자기적 전이온도와 비슷한 값을 보였다. 자기이력곡선으로부터 Bean의 모델을 이용하여 Hcl(저임계자기장), Hc?(고임계자기장), 반자성정도, 임계전류밀도를 측정하였다. 이러한 성질들은 시료 내에 Ca의 치환량이 많아질수록 증가하였으며, Zn가 많아질수록 급격히 감소하였다. 특히 임계전류밀도는 x=0.0인 시료는 1.60x10?A/㎠이었으며 Ca이 치환된 시료는 1.30~1.98x10? A/㎠, Zn가 첨가된 시료는 3.5x10?~1.3x10?A/㎠의 값으로 계산되었다. 이것은 시료 내에서 Ca은 초전도성을 증가시키고, Zn는 초전도성을 감소시키는 것을 의미한다. We have studied magnetic properties as a appropriate substitute of Ca and Zn element for Prelement which reduces superconducting properties in the high-temperature superconductor Y?Pr?Ba?Cu?O? of transition temperature 72K. When Ca is put into, the critical temperature(Tc)showed the value of measurement at the range of 80~85K while for Zn the Tc had the range of 35~49K. The electric critical temperature determined by the temperature dependence of resistivity had a similar data to the magnetic field), Hc?(high critical magnetic field), diamagnetic ratio and critical current density have observed by Bean's model from the magnetic hysterisis curve. These properties were increased with adding Ca and abruptly decreased with adding Zn in the samples. Especially, the critical current density of x=0.0 sample was calculated at 1.60x10?A/㎠ and those of the other Ca-added samples at the range of 1.30~1.98xA/㎠and those of Zn-added samples at the range of 3.50x10?~1.30x10?A/㎠. These mean that Ca increases supercondecting properties in the sample and Zn element decreases them.

SVE와 Bioventing 기술을 이용한 유류 오염 토양의 지중처리

김석현,공성호,김상민,김용수 漢陽大學校 環境科學硏究所 2001 環境科學論文集 Vol.22 No.-

산업의 발달과 함께 유류의 소비가 점점 늘어나고 있다. 그러나 느린 노출 속도와 토양 오염에 대한 관심의 부족으로 유류 오염 지역이 점점 증가 되고 있다. 본 연구에서는 디젤로 오염된 토양에 SVE와 Bioventing 기술의 적용 가능성을 알아 보고자 하였다. SVE와 Bioventing을 차례로 실시하고 주위의 감시정으로부터 VOCs의 농도를 측정하여 오염물의 감소를 확인하였다. 본 현장의 경우 토양 내 모래의 함량이 많아 높은 Air Permeability를 나타내어 SVE 기술의 적용이 용이함을 알 수 있었다. 그러나 높은 Air Permeability로 인한 영향 반경 및 효율의 감소에 대해 추출정 Screen의 축소와 추출압력의 증가 등의 기술이 필요하였다. Bioventing 기술의 적용시 최소 주입 공기량은 3.5∼4.5㎥/h이었고 Bioventing과 미생물 제제를 병용하여 사용하여도 효과적임을 알 수 있었다. 본 현장에서 SVE와 Bioventing 기술의 적용으로 감시정의 VOCs의 농도가 800∼2400ppm에서 20ppm이하로 감소함을 확인하였다. Contamination of groundwater and soils by petroleum hydrocarbons has gained attention lately and caused serious pollution problems. Conventional remedial solutions for petroleum hydrocarbon contaminated soils (excavation and incineration) and groundwater (pump and treat) are expensive and can increase human exposure to contaminants. In-situ SVE or Bioventing, which induce air flow in the subsurface, can be an option that can restore petroleum hydrocarbon contaminated soil quickly, at lower cost, and with minimal health risk. This study investigated whether in-situ SVE and Bioventing can be applied to diesel contaminated soil or not. This study site consists of sandy soil to assure high air permeability. Owing to the high Air Permeability, the technology, such as the diminution of the monitoring well screen and the increasement of extraction presure, is required to control the decreasement of the influential area and efficiency. In the Bioventing technology, the range of a minimal air flow rate is from 3.5㎥/h to 4.5㎥/h. And it is more effective, used with microorganism. In conclusion, Initial level of VOCs of 800-2400ppm dropped to 20ppm after day operation of bioventing.

활성오니법에 있어서 Induced Aerator의 효능에 관한 연구

김현수,이승무,박진원 연세대학교 산업기술연구소 1985 논문집 Vol.17 No.1

This study was carried out to study the efficiency of the induced aerator which causes nearly complete mixing and high oxygen-transfer in the aerator. With varying rpm, the oxygen-transfer coefficient was determined. The removal efficiency of substrate was measured analytically by varying feed concentration, feed flow rate, and rpm at constant biomass recycle ratio. The experimental results show that the oxygen-transfer coefficient varies linearly with rpm, and the optimum rpm is 3000. By expressing the specific substrate utilization rate constant, K with regard to rpm, the rate constant, K was investigated with varying dilution rate. The DO concentration, the removal of COD and BOD?, and the effect of MLSS in the aerator was also investigated with varying rpm.

폐수 처리에 있어서 중금속 이온의 Ferrite 생성에 관한 연구

김현수,이승무,최상기 연세대학교 산업기술연구소 1984 논문집 Vol.16 No.1

This investigation was carried out to conduct the formation of Ferrite from heavy metal ions in industrial wastewater. In this study, wastewater was treated with alkali and ferrous sulfate solutions in Batch/CSTR, under the various, conditions, to form Zn-and Mn-ferrite. The optimum conditions were found from the batchwise experiment;??/?? mole ratio was 5.0 at 65℃ of reaction temperature in 90min. of residence time, thereby obtaining the chemical composition of ferrite such as (??)?? ?? in 92.6% of yield(wt.%). And the experimental results of continuous operation in CSTR were obtained for the formation of ferrite such that the residence time was more than 80min. with the previously obtained optimum conditions for more than 85% of yield.

동충하초 투여가 최대하 운동 시 지방연소에 미치는 영향

김철우,이용수,이상현,이상호,하민수,윤영조,이재일 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

The purpose of this study was to evaluate effects of Cordyceps militaris on fat oxidation during submaximal exercise. Fifteen healthy male collegiate students(ingestion group, N=7; control group, N=8) participated as subjects after signing an informed consent following overnight, subjects completed maximal graded execise test on treadmill to determine exercise intensity(50%VO2max). To evaluate the fat oxidation using indirect calorimeter, it was performed submaximal treadmill to determine exercise lasting. 40min at 50%VO2max after 5day and consumed Cordyceps militaris on separate days. This study was used 2×4 two way repeated ANOVA to analyze physiological and metabolic variables between two groups and metabolic variables between two groups and four exercise periods(l0min, 20min, 30min 40min), and used Scheffe to post-hoc test. Significance was set at α=.05. The results of this study were as followed: First, there were significantly highest in ingestion group for V02, percentage of fat oxidetion(%fat), fat per kilocarolies(Fkcal), and total per kilocarolies(Tkcal)(p<.05), but respiratory exchange ration(RER) and heart rete(HR) were significantly lower in ingestion group(p<.05). Second, RER, %fat, Fkcal were significantly difference in 10, 20, 30, 40min of exercise period(p<.05). This results suggest that there is the effect of Cordyceps militaris on fat oxidation submaximal exercise. Additionally, to evaluate effect of Cordyceps militaris as ergogenic aid, it should be required the future study that included extend subjects, various dosage, and chronic consumption.

전자석 작동기를 이용한 드릴의 선회진동제어 : Control of the Whirling Vibration of the Drill by Electromagnetic Actuator

김중배,이상조,최현 연세대학교 산업기술연구소 1991 논문집 Vol.23 No.2

The drill is the most widely used tool in the world to make holes on the workpiece. But the performance of the drill is affected by many factors. One of them is to get the position of the drill at the beginning of the penetrating stage. The drill vibrates laterally while it rotates. Especially in case of a thin and long drill, the magnitude of the whirling vibration of the drill becomes very large and makes critical problem. Therefore, several methods have been used to get a correct position during drilling process. As an example, center drills or guides are used to make the drill get correct position. But these methods are passive. In this paper, studies for an active control are carried out to get the correct position of the drill by reducing the whirling vibration of the drill which occurs before the drill contacts the workpiece. The active phase lead algorithm is applied in order to control the vibration of a twist drill, which has dimension as follows: diameter φ3 and length 150mm.

董氏鍼을 加味한 治療가 中風患者의 NIHSS와 MBI상의 단기간 기능회복에 미치는 영향

조태성,손인석,김철홍,서정철,윤현민,장경전,송춘호,안창범 동의대학교 한의학연구소 2002 동의ㆍ경산 한의학 학술대회 Vol.6 No.-

폐암에서 CYFRA 21-1과 다른 종양표지자의 진단적 의의

이상구,이호현,전병철,김성자,이영현,김문연,하경임 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

폐암의 확실한 조직학적 진단이 어려울 경우 종양표지자의 검사가 보조적인 진단 수단이 되고, 조기 진단이나 경과 관찰에 이용되고 있다. 이에 저자는 CYFRA 21-1이 폐암의 종양표지자로서 효용성이 있는지 판정하고, CYFRA 21-1과 다른 폐암 종양표지자인 SCC Ag, CEA, NSE의 폐암의 조직학적 유형에 따른 민감도와 특이도를 비교하였다. 그리고 병기 진행에 따른 CYFRA 21-1치의 증가 여부를 관찰하고, 4가지 종양표지자를 동시에 측정하였을 때의 진단적 효용성을 비교하고자 하였다. 이 연구는 1994년 12월부터 1995년 11월까지 동국대학병원에 입원한 폐암 환자 40명과 양성 폐질환 환자 40명을 대상으로 하였다. 편평상피세포암 21명, 선암 10명, 소세포암 7명, 대세포암 2명이었다. 혈청 CYFRA 21-1의 cytokeratin 19 분절에 대한 쥐의 두 가지 단일 클론항체(KS 19-1과 BM 19-21)를 이용하는 RIA방법으로 측정하였다. CEA는 MEIA 방법으로, SCC 항원과 NSE는 RIA로 측정 하였다. 1. CYFRA 21-1의 혈중 농도는 폐암군 22.08±43.00ng/mL, 양성 폐질환군 1.14±1.04ng/mL로 폐암군에서 양성 폐질환군보다 유의하게 높았다(P<0.05). 폐암환자군에서 55%의 양성율을 보였고, SCC 항원 30%, CEA 44.7%, NSE 54.5%의 양성율을 나타내 CYFRA 21-1이 가장 높은 양성율을 보였다. 2.CYFRA 21-1은 비소세포암군 23.79±44.49ng/mL, 소세포암군 13.90±33.57ng/mL로 양군에서 유의한 차이를 보였다. 폐암환자군에서 민감도와 특이도는 CYFRA 21-1 55.0%와 96.7%, SCC항원 30.0%와 96.4%, CEA 42.5%와 92.8%, NSE 36.4%, 76.9%로 CYFRA 21-1에서 가장 높은 민감도와 특이도를 보였다. 폐암의 조직학적 유형에 따른 민감도는 편평상피세포암에서 CYFRA 21-1이 61.9%로 CYFRA 21-1의 민감도가 가장 높았고, 선암에서는 CEA가 88.8%로, 소세포암에서는 NSE가 85.7%로 가장 민감도가 높은 것으로 나타났다. 3. 비소세포암군에서 CYFRA 21-1치는 병기가 진행됨에 따라 증가하는 경향을 보였으나 통계학적으로 유의하지는 않았다. 4. 폐암환자에서 단일 종양표지자를 측정하는 것 보다 동시에 여러 종양표지자를 측정하는 것이 특이도는 떨어지나 민감도는 80.0%로 더 높은 것으로 나타났으며 정확도에는 큰 차이가 없었다. 양성 표지나 수에 따른 비교분석시 폐암의 상대 예측도는 두 표지자 양성인 경우가 76.5%, 3가지 표지자와 4가지 모든 표지자에서 양성으로 나온 경우는 100%로 나타났다. 본 연구 결과 CYFRA 21-1은 새로운 폐암의 종양표지자로 기존의 종양표지자 보다 민감도가 높고 비소세포암 특히, 편평상피세포암에 유용한 표지자로 사료되며, 폐암이 의심되는 환자에서 단일 종양 표지자를 측정하는 것 보다 수종의 종양표지자를 동시에 측정하는 것이 진단에 더욱 도움이 되리라 생각된다. Background: Cytokeratin 19 is a subunit of cytokeratin intermediate filament expressed in simple epithelia and their malignant counterparts. A fragment of cytokeratin subunit 19 can be measured in serum with a immunoradiometric assay using two mouse MoAb KS 19-1 and BM 19-21. Thus this cytokeratin 19 fragment is referred to as CYFRA 21-1. The aims of this study are to evaluate the clinical utility of CYFRA 21-1 in the diagnosis of lung cancer and to compare the diagnostic sensitivity and specificity of CYFRA 21-1 with those of CEA, SCC Ag, NSE according to histological type of lung cancer. Methods: In 40 patients with lung cancer(21 with squamous cell carcinoma, 10 with adenocarcinoma, 7 with small cell carcinoma, 2 with large cell carcinoma) and 40 patients with non-malignant lung disease, serum CYFRA 21-1 was measured by solid-phase immunoradiometric assay(CIS Bio International, France). Serum NSE and SCC Ag were measured by immunoradiometric assay, and CEA was measured by microparticle enzyme immunoassay. Results: 1) The mean value of CYFRA 21-1 was 22.08±43.00ng/mL in the lung cancer and 1.11±1.04ng/mL in me non-malignant lung disease group(P<O.O5). 2) Using the cut-off value of 3.3ng/mL, the sensitivity and specificity of CYFRA 21-1 were 55.0%, 96.7% in the lung cancer. The sensitivity of CYFRA 21.1 was 61.9% in squamous cell carcinoma 3) The level of CYFRA 21-1 was increasing tendency with the progression of stage in non-small cell carcinoma but statistically not significant. 4) Simultaneous determination of four tumor markers revealed increased sensitivity to 50.0% in lung cancer. As the number of positive markers was increased, the relative possibility of lung cancer was also increased. If two markers were positive, it increased to 76.5% and three markers were positive, it increased to 100%.5 Conclusions: CYFRA 21-1 is a useful serum marker for patients with lung cancer, especially in squamous cell carcinoma of the lung. The simultaneous measurement of CYFRA 21-1, CEA. SCC Ag and NSE would provide additional information for the diagnosis of lung cancer, especially in patients with high risk group of lung cancer.