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.

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.

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.

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.

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.

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.

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.

구내 표준 방사선사진을 이용한 구내방사선촬영기의 선질 평가

이상섭,권혁락,심우현,오승현,이지연,전국진,김기덕,박창서 대한구강악안면방사선학회 2000 Imaging Science in Dentistry Vol.30 No.3

Purpose : This study was to evaluate the beam quality of intraoral X-ray equipments used at Yonsei University Dental Hospital (YUDH) using the half value layer (HVL) and the characteristic curve of intraoral standard X-ray film. Materials and Methods : The study was done using the intraoral X-ray equipments used at each clinical department at YUDH. Aluminum filter was used to determine the HVL. Intraoral standard film was used to get the characteristic curve of each intraoral X-ray equipment. Results : Most of the HVLs of intraoral X-ray equipments were higher than the least recommended thickness, but the REX 601 model used at the operative dentistry department and the X-707 model used at the pediatric dentistry department had HVLs lower than the recommended thickness. The slopes of the characteristic curves of films taken using the PANPAS 601 model and REX 601 model at operative dentistry department, the X-705 model of prosthodontic dentistry department, and the REX601 model at the student clinic were relatively low. Conclusion : HVL and the characteristic curve of X-ray film can be used to evaluate the beam quality of intraoral X-ray equipment. In order to get the best X-ray films with the least radiation exposure to patients and best diagnostic information in clinical dentistry, X-ray equipment should be managed in the planned and organized fashion. (Korean J Oral Maxillofac Radiol 2000; 30: 183-188)

유산양 유방염에 대한 Chitosan 약침의 치료 효과

황수현,서진석,김덕환,김명철,신상태,전무형,南三郞,김영찬,이우근,표수일 충남대학교 수의과대학 동물의과학연구소 1999 動物醫科學硏究誌 Vol.7 No.-

To improve the therapeutic method for mastitis, treatment effect of chitosan pharmacopuncture was examined in three milking goats(A,B and C). Mastitis was artificially induced in two milking goats(A and B) and one goat(C) was naturally infected case with mastitis. The acupoint used was Yang-Ming and chitosan suspensions(provided from Tottory University, Japan: 30㎎ of chitosan/㎖)were injected to the acupoint with 5㎖/time for 3 days, respectively. As for the change of somatic cells in milk along with chitosan pharmacopuncture, they showed a decreasing tendency after increase on the 3rd day in all udders of B. In addition, as for the change of total leukocyte counts of peripheral blood with chitosan pharmacopuncture, they showed a decreasing tendency after increase on the 3rd day in B and C except A which showed a increasing tendency until on the 7th day. In the change of neutrophil/lymphocyte(N/L) ratio, increasing tendency was seen in A and C but increasing tendency after slight decrease was observed in B. Further, in the change of serum total protein and A/G ratio, serum total protein content was decreased after slightly increase on the 3rd day in A, and they were decreased after increase until on the 7th day in B and C, respectively. As for the change of A/G ratio, different pattern increasing tendency was shown in A, B and C.