저체중 또는 과체중 청소년에서 캠프 프로그램을 이용한 영양 교육효과에 관한 연구

성미경,승정자,류화춘,박재년,박동연,최미경,조경옥,최선혜,이윤신,김유경,이은주 대한지역사회영양학회 2003 대한지역사회영양학회지 Vol.8 No.4

This study was performed to evaluate the effectiveness of a nutrition education program developed for nutritionally imbalanced adolescents. A summer nutrition camp was held for 23 overweight and 16 underweight subjects. Its effectiveness with regard to was evaluated at the end of the camp and 6 months later. Nutrition knowledge, nutritional attitude, food behavior, nutrient intake, exercise habit and ideal body figures desired by the subjects. The results showed significantly higher nutrition knowledge scores at the end of the camp as compared to those obtained prior to the camp program, and these scores were maintained for at least six months. Nutrition attitude scores also improved after the education program, and these improved scores also lasted for 6 months. However, the food behavior scores measured 6 months after the education program were not significantly different from those obtained prior to the camp. Also, the exercise habit, the ideal body figures and the body figures desired by the subjects remained unchanged. When nutrient intakes of subjects were assessed before the program and 6 months later, the mean daily vitamin C intake was significantly increased after the education program. Also, the intake of iron from plant food sources increased in the overweight subjects, while less iron from animal source were consumed by the underweight subjects. Both groups tended to consume more vegetables and fruits 6 months after the education program which may have contribute to the higher vitamin C and plant-based iron intakes. These results indicate that a 4-day nutrition education camp program sustained changes in nutrition knowledge and nutrition attitude for 6 months. The increased intake of vegetables and fruits was also achieved through this education program. However, changes in dietary behavior in adolescents may require repeated education.

팔당호의 생태학적 수질환경의 변화와 미생물 분포

허성남,민경희,유재근,최순영 숙명여자대학교 자연과학연구소 1999 자연과학논문집 Vol.- No.10

팔당호의 생태학적 환경요인의 계절적인 변화를 분석하므로서 이것으로 인한 식물성 플랑크톤의 연관성을 고찰과 함께 오염과정을 파악하여 수질오염의 예방의 기초자료를 얻고자 본 실험을 수행하였다. 1994년 4월부터 1995년 10월까지 계절별로 3개 지점에서 시료를 채취하여 표층부와 저층부의 수질을 분석하였다 용존산소(DO)와 pH는 각각 7.0-11.6 ㎎/ℓ와 6.9-8.9의 범위이었으며 COD와 BOD농도는 각각 1.6-4.8 ㎎/ℓ와 0.8-2.9 ㎎/ℓ이었으며,SS는 1.8-8.6 ㎎/ℓ의 농도차를 보여 주었다. 또한 NH₃-N와 PO₄-P의 농도는 각각 0.161-0.478 ㎎/ℓ와 0.003-0.073 ㎎/ℓ이었다. 표층의 chlorophyll a의 농도는 낮게는 북한강 유입부위인 12.3 ㎎/ℓ로부터 가장 높은 경안천 유입부위 23.8 ㎎/ℓ의 범위를 보여주고 있다. pH,전도도, COD, BOD, SS ,총인, chlorophyll a의 농도는 하계절에 가장 높았으며 이 결과로 미루어 보아 하계절에는 하천에 오염물질이 가장 많이 유입되는 것으로 추정된다. Station별로 조사한 결과 이들의 농도는 경안천 하류인 St. 3가 남한강 하류인 St. 2이나 댐지역의 St. 4보다 높은 결과를 보여 주었으므로 경안천 상류에서 오염원이 가장 많이 유입되는 것으로 추정된다. 아울러 종속영양세균의 분포도 경안천이 다른 지역보다 가장 높게 나타났다. Seasonal variation of water quality was examined in the reservoir, lake Paldang on Han River, the inlet stations from three rivers, North Han River, South Han liver, Kyung-An stream, and the station of dam area of the lake. Water samples were collected bimonthly from surface and bottom layers at four different stations of the lake Paldang from April 1993 to August 1994. With respect to the seasonal variation, pH, conductivity, and concentrations of COD, BOD, SS, total phosphorus, and chlorophyll a were higher in summer compared with those of autumn or other seasons, while concentrations of DO, NH₃-N, and PO₄-P were increased in winter. Concentrations of COD, BOD, chlorophyll a, total nitrogen and phosphorus were the highest at the station of Kyung-An stream rather than those of other three stations. The average concentrations of chlorophyll a surface water were from 12.3 ㎎/ℓ at North Han River to 23.8 ㎎/ℓ at Kyung-An stream. Heterotrophic bacterial distribution showed higher at the station of Kyung-An steam than those of South Han River and the dam station of the lake.

열공형과 비열공형 피질하 혈관성 치매에서 위험인자의 차이에 관한 비교 연구

배희준,정지향,유경호,나덕렬,김상윤,최경규,양동원,손의주,이상도,김재우,박경원,김응규,이재홍,박미영,한일우,함동석,최문성,하충건,최성혜,이애영,이병철,한설희 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.2

Backgrounds and Objectives: Vascular dementia is a group of dementing disoders arising from various stroke syndrome. Among these. subcortical ischemic vascular dementia (SIVD) is regarded as a relatively distinct clinical entity. However, MRI patterns of SIVD are not homogenous. In some patients, lacunes are dominant, and in others, subcortical white matter changes are. This study was designed to compare risk factor profiles between SIVD with and without multiple lacunes. Methods: We divided 47 subjects (22 males, mean age. 68 years) recruited from VADAPET (Multicenter Trial For Evaluation Of The Changes In the PET Images Of Subcortical Vascular Dementia Patient) study into two groups one with more than 5 lacunes in deep gray matter (lacune group) and the other with 5 or less(non-lacune group) Clinical characteristics and laboratory findings of two groups were compared. Results: Nineteen of 47 patients (40%) belonged to the lacune group. The lacune and non-lacune groups d d not differ in the following variables: age, hypertension, diabetes mellitus, hyperlipidemia heart disease, history of stroke or TIA, history of trauma or major surgery, family history of hypertension stroke, or dementia, age at diagnosis of dementia, body mass index, white blood cell count, ESR, CRP, fibrinogen, hemoglobin A1C, total cholesterol. LDL cholesterol creatinine, proteinuria, glucosuria, and microhematuria. However, male sex, smoking alcohol. hemoglobin, and HDL cholesterol were possibly associated more with lacune group SIVD than with non-lacune group (p<0 1) Multivariate analyses revealed that smoking, hemoglobin, and HDL cholesterol were independent predictors of SIVD with multiple lacunes Conclusion: Our study suggests that SIVD with multiple lacunes may be significantly different in smoking habits hemoglobin, and HDL cholesterol from SIVD without multiple lacunes.

폴리(아미드-이미드-이미드)의 합성 및 그 특성에 관한 연구

최승재,서경범 단국대학교 1998 論文集 Vol.32 No.-

Polyimides which is among the class of heterocyclic polymers, have remarkable high temperature resistance, tensile strength, toughness, etc. However, fabrication and processing of imide polymers have been limited because fully cured imide polymers are generally infusible and insoluble in most solvents. A number of methods have been used to overcome intractability while maintaining reasonably high temperature characteristics. To attain these thermoplasticity, polyimides have been modified either through the addition of a side chain or through introduction of flexible, non-symmertrical and thermally stable linkages to the backbone. Among these modifications, the combination of amide and imide groups which resulted in poly(amide-imide)s [PAI] imparts flexibility, elongation and toughness. So, a new structure of an anhydride-acid chloride was designed for novel poly (amide-imide-imide)s. Successfully, we prepared a novel anhydride-acid chlorie containing imide group as a monomer form L-glutamic acid and trimellitic acid anhydride [TMA]. The resulting poly(amide-imide-imide)s were synthesized by polycondensation of new monomer and the various diamines. It is shown that the synthesized poly(amide-imide-imide)s overcome problems accociated with polymide as well as provide higher thermal stabilities due to high content of imide group in the polymers The chemistry and properties of the resulting polymers will be discussed.

그람양성구균에 대한 Teicoplanin과 Vancomycin의 시험관내 항균력

최태열,김경숙,전용관,서일혜,김정욱,이웅수,안정열,김홍석,정재용,최효선,김덕언,유진우 대한감염학회 1994 감염 Vol.26 No.1

An increasing frequency of methicillin resistant S. aureus(MRSA), methicillin resistant coagulase negative staphylococci(MRCNS) and Enterococcal infection have been observed in recent years. Teicoplanin is a new glycopeptide antibiotic obstained from the Actinoplanes teicomycetius. The molecular structure and spectrum of antimicrobial activity of teicoplanin is simillar to those of vancomycin, and has been reported to have an excellent in vitro and in vivo effect against various gram-positive infections. Therefore, we evaluated the in vitor susceptibility of gram positive cocci, such as, S. aureus, coagulase negative Staphylococci(CNS), and Enterococci to teicoplanin and vancomycin. The total 253 strains consisted of MSSA(40), MRSA(53), MSCNS(47), MRCNS(48), and Enterococci(65). They were assayed by disc diffusion and agar dilution. During the study, 57% of S. aureus and 49% of CNS showed resistance to methicillin. The inhibitory diameter of teicoplanin was 15-20mm in MSSA, 12-19mm in MRSA, 13-24mm in MSCNS, 11-23mm in MRCNS, and 15-22mm in Enterococci respectively, and showed sensitivity in all but 8 strains(3.2%). The range of the minimum inhibitory concentration (MIC) of teicoplanin to MSSA, MRSA, MSCNS, MRCNS and Enterococci were 9.12-2.0㎍/ml, 0.25-2.0㎍/ml, & 0.25-32㎍/ml, 0.12-1.0㎍/ml respectively. One case of S. haemolyticus was resistant to teicoplanin (32㎍/ml) by the agar dilution method. Eight minor (3.2%) and one major(0.4%) error was observed when the MIC and disk diffusion data were correlated with teicoplanin. As for vancomycin the inhibitory diameter was 17-21mm in MSSA, 15-21mm in MRSA, 18-26mm in MSCNS, 18-25mm in MRCNS, and 16-22mm in Enterococci respectively. The range of the MIC of vancomycin to MSSA, MRSA, MSCNS, MRCNS, and Enterococci were 0.25-1.0㎍/ml, 0.25-4.0㎍/ml, 0.5-2.0㎍/ml and 0.5-2.0㎍/ml respectively. One minor error (0.4%) was seen with the vancomycin disk. The MIC90 of MSSA and MRSA exhibited the same results in teicoplanin (1.0㎍/ml, 1.0㎍/ml), and vancomycin(2.0㎍/ml, 2.0㎍/ml). MSCNS and MRCNS exhibited greater MIC90 with teicoplanin(4.0㎍/ml, 8.0㎍/ml) than vancomycin(2.0㎍/ml, 2.0㎍/ml). Incontrase Enterococci were more susceptible to teicoplanin(0.5㎍/ml) than to vancomucin (2.0㎍/ml). Results from this analysis indicated that both teicoplanin and vancomycin were very excellent for gram positive infections, especially those resistant to methicillin.

고속 Communication 을 위한 송수신 Driver unit 제작

최경,변재섭 강원대학교 정보통신연구소 1999 정보통신논문지 Vol.3 No.-

This paper presents a development of a high speed communication driver module on the physical layer of data communication Design process was done on the basis of PMA and MAC layers of Ethernet Architecture. As a high speed communication Driver, the AMCC's S2046/S2047 Gbit Ethernet Transmitter was selected. And FIFOs are used to built Buffers for high speed data access, which have 2 port Asynchronous I/O. The Prototype of High Speed TX/RX communication units were built on IBM-PC's ISA BUS architecture, and the experiment was performed on Two PCs. PC sends DATAs to FIFO on "Add-on-Board"-TX unit by program control of PC, FIFOs which have Double Buffers send the DATAs to communication Driver-S2046, and the Driver send them to Coaxial cable. The receiving processes are done on reverse DATAs flow.

흰쥐 십이지장 점막의 Polyamine 대사, [^(14)C]Spermine 단백 결합능 및 [³H]Thymidine DNA 섭취에 대한 Calcitriol과 Prednisolone의 상호작용

최상현,이영재,정휘정,김형건,신경호,천연숙,전보권 고려대학교 의과대학 1997 고려대 의대 잡지 Vol.34 No.1

Calcitriol has been shown to induce the duodenal synthesis of the spermine-binding protein. and hydrocortisone was reported to increase the intestinal polyamine contents. This study examined whether prednisolone might enhance or reduce the calcitriol effects on the polyamine contents, [^(14)C]spermine-protein binding activity, and [^(3)H] thymidine DNA synthesis of the rat duodenum. The mucosal contents of putrescine. spermidine. and spermine were increased by 198.8%, 84.0%, and 78.3%, respectively, within 6 hours after calcitriol. 5 ㎍/kg (CT) and fell down to the control values at 12 hours. And prednisolone. 10 mg/kg (PD) also increased the polyamine contents in similar patterns. They did not counteract each other in the polyamine metabolism. CT increased the [^(14)C]spermine-binding activity of the cytosol protein fraction from the duodenal mucosa by 71.1%. But PD increased the binding activity by 28.0% and did not affect the CT-induced increase. CT increased the [^(3)H]thymidine DNA synthesis of the duodenal mucosa by 42.3%. but PD reduced it slightly. The CT-dependent increase of the synthesis was significantly inhibited by PD. These results suggested that the inhibitory effect of glucocorticoids on the vitamin D dependent increases of the duodenal calcium absorption and mucosal proliferation seems not to be associated with the metabolic changes of polyamines in the duodenal mucosa.

무선 ATM에서의 효율적인 자원할당 알고리즘

최명렬,조태경,권재우 漢陽大學校 工學技術硏究所 2000 工學技術論文集 Vol.9 No.1

본 논문에서는 셀을 섹터로 구분하고 이동국이 어느 섹터에 위치하는가를 추정하여 핸드오버할 확률이 가장 높은 최인접셀을 정하므로써 효율적인 대역폭 할당을 할 수 있는 핸드오버 알고리즘을 제안하였고, 서비스 트래픽을 실시간과 비실시간으로 구분하므로써 무선 멀티미디어 환경에 알맞은 대역폭 할당을 가능하게 했다. 또한 이에 적합한 무선 MAC프로토콜을 제안하여 구현하고자 하는 무선 ATM환경을 보다 구체적이며 실제적으로 나타냈다. 본 논문에서 제안한 알고리즘은 기존의 핸드오버 알고리즘과 SMPL로 비교 시뮬레이션하여 성능을 검증해 보았다. We propose the handover algorithm considering the position of mobile terminal and determining the most adjacent cell with the highest probability of handover. The proposed algorithm can make a effective bandwidth allocation and may be applicable to the condition of wireless multimedia. In addition, the proposed algorithm is considered efficient wireless MAC protocol. The simulation results of the proposed algorithm show better performance in both blocking probability and handover probability than conventional one.

동양 전통과학의 탐구방법론 연구 : 朱子의 格物致知論을 중심으로

최영제,이우붕,정원우,김용수,문장수,방경곤,김기정 경북대학교사범대학과학교육연구소 2005 科學敎育硏究誌 Vol.29 No.-

응급의료센터에서 신경색의 조기진단

최경호,오동렬,이원재,박규남,박승현,황두영,김형국,정시경,김영민,김세경 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.4

To evaluate appropriate diagnostic studies for renal infartion in emergency medical center, we analysed 33 patients of renal infarction treated in this hospital for last 8 years. Eleven patients, 4 trauma associated and 7 aortic disease associated patients were excluded. They are 11 males and 11 females with a mean age of 51 years. Fourteen came to the emergency medical center and seven came to the outpatient department, in the other one patient renal infarction was developed during hospitalization with other disease. On their past history they had hypertension in 9, valvular heart disease in 5, and diabetic mellitus in 4 patients. Abdominal or flank pain was noted in 17 of 22(77%). The other symptoms were vomiting, nausea, fever and so on. On microscopic examination of initial urine in hospital, 5 patients showed more than 10 red blood cells by high power field examination. The mean lactic dehydrogenase level was 1,239 I.U/L(normal range 218-472 I.U/L), while the mean aspartate aminotransferase and mean alanine aminotransferase were 51 I.U/L(normal range 13-36 I.U/L) and 44 I.U/L(normal range 5-33 I.U/L). Abdominal ultrasonography showed positive findings in 5 of 16(31%), of which 3 were confirmed by Doppler ultrasonography. In 18, computed tomography was done and all those showed positive findings of renal infarction(100%). In conclusion, it is important that identify the elevated lactic dehdrogenase level in case of any suspicion about renal infarction and confirm by computed tomography.