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      • 사기오미론(四氣五味論)의 구조적 해석

        조용주,김진주,Cho, Yong-Ju,Kim, Jin-Ju 한국한의학연구원 2005 한국한의학연구원논문집 Vol.11 No.2

        Four Properties and five Flavors of Drugs is interpreted by adaptation of human body to the environmental theory(天人相應). The Structural model of the body is compared with sky, earth, sun and moon (天, 地, 日, 月). The natural changes of the four seasons give rise to that of Four Properties and five Flavors of Drugs. On equal terms it is happened in our body. On this study we can draw an analogy between sky, earth, sun & moon (天, 地, 日, 月) and the body. The six bu(六腑) is related to the earth, the five ju(五主) to the sky, the five jang(五臟) to the sun, the meridians system (經絡) to the moon. When spring, the air is warm, the water element of the earth is ascending, and the earth gives birth to the sour flavor. Like this, the water element is absorbed by six bu and then is ascended to the meridian system. When summer, the air is hot and the water element of the earth is floated, the earth make the bitter flavor. In the same way, the six bu absorbed the hot air from the five ju and the water element is quickly absorbed by six bu and then the water element is ascended to the meridian system. When rainy season (長夏), the earth creates the sweet flavor The sweet flavor give warmer energy to the five jang and the six bu. When autumn, the earth change the sweet flavor into pungent. The earth gives warmer energy to the sky, because of cool weather According to same process, the pungent flavor give warmer energy to the five jang and the six bu, and the meridian system gets back the water element from the five ju. When winter, the air is cold and the water element of the earth is hidden. The sky and the earth are not interchangeable. At that time, the earth produce the salty flavor and the water element is keeping in the meridian system.

      • KCI등재

        경부고속철도 회생 에너지 저장시스템 성능 분석

        장민주(Min-Ju Jang),전용주(Yong-Joo Jeon),노영환(Young Hwan Lho) 대한전기학회 2015 전기학회논문지 Vol.64 No.9

        Recently, various researches are conducted in the application of regenerative energy produced during the operation of an electric locomotive. Regenerative energy is produced by a generator in the brake procedure. The generator is operated by kinetic energy of an electric railroad using an electric motor. The process of producing regenerative energy varies with the current type of a railroad and its running condition. The quality of electric power can be improved and electric energy can be utilized effectively, especially in the use of an energy storage system (ESS). Thus, it is necessary to apply ESS into AC section and high speed railway. This study analyses the composition of the regenerative ESS equipment installed in Yong-Jeong sectioning post, operational principle, charge and discharge algorithm and energy efficiency. The analysis shows that CO2 emissions can be reduced about 0.5 ton per a day. In addition, ESS helps saving the energy and the compensation of the voltage drop caused by the operation of high speed train when it is installed at the end of the feeder section. The number of high speed train will be increased continuously related to the electrification rate. Therefore, applying the ESS to high speed railway is expected to solve the instability of the feeder voltage and the equipment capacity problem caused by the high speed trains.

      • 야생 설치류의 한타바이러스 감염에 대한 연구

        백락주,송진원,송기준,박광숙,최영주,강주일,이용주 대한감염학회 1997 감염 Vol.29 No.6

        목적:국내 야서중에 한타바이러스의 숙주는 등줄쥐와 집쥐로 알려져 있으나, 한국에 서식하고 있는 다양한 야생 설치류를 채집하여 한타바이러스에 대한 항체검사를 실시하여 새로운 혈청형의 한타바이러스가 있는지를 혈청학적으로 규명하고자 하였다. 방법:국내에 서식하고 있는 야생 설치류를 1995년 10월부터 1996년 10월까지 7종 551수의 야시와 4종 97수의 소형동물을 채집하여 한타바이러스에 대한 항체검사를 간접형광항체법으로 실시하였다. 결과: 1) 야서 7종 551수와 소형동물 4종 97수를 대상으로 한탄바이러스의 감염율은 등줄쥐 17.2%(29/162), 흰넓적다리붉은쥐 8.7%(2/23), 대륙밭쥐는 25%(2/8), 그리고 땃쥐는 7.1%(1/14)이었다. 그리고 야생토끼는 8.8%(7/80)가 서울바이러스에 대한 항체를 가지고 있었다. 등줄쥐의 양성혈청중 대부분은 서울바이러스와 일부는 푸말라바이러스, 프로스펙트힐바이러스, 뉴욕바이러스와도 교차반응이 있었다. 흰넓적다리붉은쥐 2수와 대륙밭쥐 2수는 5가지 한타바이러스 모두에 교차 반응이 있었다. 2) 다람쥐는 9.5%(28/283)가 채집지역에 관계없이 한탄바이러스에 대한 항체를 가지고 있었고 항체기는 1:16 내지 1:256으로 비교적 낮았으며 서울바이러스, 푸말라바이러스, 프로스켁트힐바이러스와 뉴욕바이러스에 각각 반응하는 것도 일부는 교차반응을 보이는것도 있다. 청설모는 10.3%(7/68)가 한탄바이서르에 대한 항체를 가지고 있었으며 항체가는 1:16 내지 1:1,024이었으며 일부는 교차반응이 있었다. 3) 야생토끼의 서울바이러스에대한 항체양성율은 8.8%(7/80)이었으며 이중에 2수는 한탄바이러스와 교차반응이 있었고, 푸말라바이러스, 프로스켁트힐바이러스, 뉴욕바이러스와는 교차반응이 없었다. 항체가는 1:16 내지 1:64로 비교적 낮았다. 결론:등줄쥐는 한탄바이러스에 의한 감염이지만 흰넓적다리붉은쥐, 대륙밭쥐, 다람쥐 그리고 청설모의 일부는 한탄바이러스가 보다 다른 한타바이러스에 대한 항체가가 높았고 특히 일부 다람쥐 혈청은 푸말라바이러스 혹은 프로스켁트힐바이러스에만 반응하였다. 그리고 야생토끼는 서울바이러스에 대한 감염율이 높은 것으로 보아 국내에 한탄바이러스와 서울 바이러스 이외에 새로운 혈청형의 한타바이러스가 있는 것을 사료된다. Background: Hantavirus are widley distributed in rodents populations even in geographical areas where hemorrhagic fever with renal syndrome(HFRS) has not been reported. Multiple species of Murid and Arvicolid rodents serve as the natural reserviors of hantaviruses. Serologic diagnosis using hantaviral antigens indicates that hantaviruses are widley distibuted in wild rodents. This study were designed to find the distribution of hantaviruses among wild rodents and small mammals in Korea, 1995-1996. Methods: Rodents were trapped alive in selected areas. A total of 551 wild rodents from 7 species and 97 small mammals from 4 species were captured in Korea. Serologic evidence for hantavirus infection were tested using five hantavirus antigens by indirect immunofluorescent antibody technique(IFA). Among 162 Apodemus agrarius, 23 Apodemus peninsulae, 8 Clethrionomys regulus, 6 Microtus fortis, 1 Mus musculus, 283 Tamias sibiricus, 68 Sciurus vulgaris, 14 Crocidura laciura, 80 Lepus sinensis, 2 Capereolus capereolus and 1 Nyctereutes procyonoides. Results: 29 A. agrarius, 2 A. peninsulae, 1 C. laciura, 2 C. regulus, 27 T. sibiricus and 7 S. vulgaris were sero positive agaist hantaan virus and 7 L. sinensis were IF antibody positive against Seoul virus. Some of Tamias sibiricus were only seropositive against puumala virus or prospect hill virus. Conclusion: This data suggests that new serotypes of hantavirus might distribute among rodents in Korea.

      • KCI등재후보

        Biochemical Characteristics and Antimicrobials Susceptibility of Salmonella gallinarum Isolated in Korea

        Ki-seuk Kim,Young-ju Lee,Yong-kuk Kwon,Ryun-bin Tak 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

        Characteristics and Antimicrobials Susceptibility of Salmonella gallinarum Isolated in KoreaYoung-ju Lee, Ki-seuk Kim1,*, Yong-kuk Kwon and Ryun-bin Tak1Avian Disease Division, National Veterinary Research and Quarantine Service, Anyang 430-824, Korea1College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, KoreaReceived February 13, 2003 / Accepted April 30, 2003J. Vet. Sci. (2003), 4(2), 161-166JOURNAL OFVeterinaryScience*Corresponding author: Ki-seuk Kim College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea Tel: 82-53-950-5962, Fax: 82-53-950-5955 E-mail: kimkiseuk@knu.ac.kr

      • Multiple Spinal Intradural Schwannomas Combined with Sequestered Lumbar Disc Herniation

        김대용,김진욱,정주호,조재훈 고신대학교 의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2

        In this report, we describe a case of multiple intradural schwannomas in the spine combined with a upward sequestered disc herniation at L4-L5. It is often difficult to differentiate this tumor from lumbar disc herniation, especially a sequestered hernia. Gadolinium-enhanced MR images were a useful preoperative examination modality for differentiating these lesions from other diseases. Microscopically, the intradural tumors were successfully removed. The dura maters of the L2 and S1 were opened microsurgically, allowing the nerve fibers involved in the tumor to be identified. The involved fibers were cut around the tumor, and the lesion was resected while the intact nerve fibers were preserved. An upward sequestered lumbar disc herniation at L4-L5 was also successfully removed. Based on histological examination of the resected specimen, the tumors were diagnosed as schwannomas. Microsurgery allowed the tumors to be removed with minimal impairment from cutting of nerve fibers in the each nerve root.

      • 뇌졸중 환자의 우울증에 영향을 미치는 요인

        김대용,정주호 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.2

        Background: The diseases are getting increasingly chronic as the fast development of medical and scientific technical advances prolong the human life span. Among many chronic diseases, the apoplexy leads to partial paralysis, speech disorder, perception disorder and paresthesia and motor disturbance. It also causes mental disorder to patients. This research was aimed to check the level of stress perceived by apoplexy patients according to the socioeconomic factors and disease characteristics. Method: Applying the Beck's depression measurement, we surveyed the depression level of 150 inpatients and outpatients who have been currently taken care of by the departments of neurology, neurosurgery and rehabilitation at a university hospital and two general hospitals in Busan. Results: According to this survey, 84 out of 150 patients are estimated to be depressed, accounting 56% of the total samples. The depression level related to the socioeconomic factors is higher in patients who are older, separated from spouse and who have low education level and financial dependence on offsprings. The depression level related to the neurological manifestations is higher in patients who have multiple strokes, long term illness, bilateral paralysis, and other neurological sequelae (particularly gait disturbance). Conclusion: The result suggest that poststroke patients are highly likely to suffer from depression by various socioeconomic factors and neurological manifestations. Therefore, it can be concluded that poststroke patients need not only medical treatments and rehabilitation procedures but also more proactive mental remedies and social supports considering patient's backgrounds and characteristics.

      • 순천향대학교 각 단과대별 실내공기질 비교

        김용주 외 순천향대학교 기초과학연구소 2011 순천향자연과학연구 논문집 Vol.17 No.2

        In this study, the concentrations of HCHO and VOCs of SCH university was surveyed in 2008, 2009. The concentrations of HCHO in College of Liberal Arts, College of Sciences, Library, Global Education Exchange, Graduate School, College of Medicine and Hakyekwan were 309.76㎍/㎥, 311.24㎍/㎥, 101.84㎍/㎥, 74.33㎍/㎥, 61.82㎍/㎥, 57.55㎍/㎥ and 25.34㎍/㎥ respectively. The concentrations of VOCs in College of Liberal Arts, College of Sciences, Global Education exchange, College of Medicine, Library, Graduate school and Hakyekwan were 692.30㎍/㎥, 383.22㎍/㎥, 238.18㎍/㎥, 205.64㎍/㎥, 124.33㎍/㎥, 114.02㎍/㎥ and 66.00㎍/㎥ respectively. The concentrations of HCHO and VOCs were 105.14㎍/㎥ and 57.10㎍/㎥ respectively, in the building constructed in 2008. On the other hand, the concentrations of HCHO and VOCs were 164.02㎍/㎥ and 463.96㎍/㎥ respectively, in the building constructed in 2009. The concentration was higher in 2009.

      • KCI등재

        타타늄의 열처리 조건에 따른 동전위 양극분극특성 및 표면 미세구조 변화

        주동현,이용렬,정영화,양홍서,박상원,이도재,송호준,박영준 大韓齒科器材學會 2002 대한치과재료학회지 Vol.29 No.2

        The corrosion resistance of metallic implants is essential for successful implant osseointegration. Moreover, the implant surface should have appropriate surface roughness for the attachment of the osteoblast and collagen fibrils. When titanium is exposed to air a thermodynamically very stable oxide film is formed at once. This oxide is very thin and yet it protects the metal from corrosion instantaneously. However, the oxide would not be ideal, and it would be supposed that the state of oxide film would be various by the different conditions when it is formed. The objective of this study was to evaluate the electrochemical properties and surface microstructural changes of titanium after passivation treatment or exposure to high heat (in vacuum or in air). ASTM grade 2 commercially pure titanium (Ti) disks of 10㎜ diameter were wet ground and polished with 240 and 600 grit SiC, and then ultrasonically cleaned with distilled water and ethanol. Cleansed as-received samples (As-R group) were passivated with 30% nitric acid solution at 50℃ for 15 minutes to make the Pas group. The Std-V samples were made by treating the Ti disks in vacuum quartz tube (10^-8 Torr) at 530℃ for 40 min for stress relieving, followed by annealing at 700℃ for 90 min, and then slow cooling to room temperature. The Std-A samples undergo identical procedure as the Std-V group except that it is done in air. For 530℃-V samples, Ti disks were heated at 530℃ for 40 minutes and slow cooled to room temperature. The 1000℃-V samples were produced by heating Std-V specimens again at 1000℃ for 2 hr, followed by cooling to room temperature. 530℃-A and 1000℃-A samples were also prepared. Potentiodynamic anodic polarization measurement, SEM, AFM and XRD analysis were performed to evaluate the effects of the various treatments. The difference in the mean values of E_corr between groups showed statistically significant difference (P<0.05), but that of I_corr did not show significance (P>0.05). When Ti surface was passivated there was a shift of corrosion potential (E_corr) in the noble direction and a lower corrosion current density (I_corr) value. Std-A samples showed most noble E_corr value among the tested groups. 530℃-V samples showed more noble E-corr than other tested groups except Std-A group. 1000℃-V samples showed more noble E-corr than those of Std-V sample. In the case of Std-, 530℃- and 1000℃-groups, -A sub-groups showed better corrosion resistant characteristics than -V sub-groups in regard to E-corr and I_corr values. In the SEM observations, the surfaces of the As-R samples showed only scratch line on smooth surface. In Pas samples, thick oxide layer covered the surface under high magnification observation. 530℃-A samples were covered by oxide granules, and Std-A samples had 25~50 nm-thick acicular oxides. The 1000℃-A samples were covered by coarse oxide crystals with a granule diameter of 0.1~0.6 μm having a gross appearance of milky white color, which was identified by XRD as a rutile. On the other hand, 1000℃-V samples showed an Widmansta¨tten structrue of which the orientation of the lattice is formed along crystallographic planes of the parent crystals. On the AFM observation, 530℃-A samples showed RMS roughness of 79.38 nm which is 5 times rougher than those of the As-R samples. Std-A sample had a roughness of 330.47 nm which is about 20-times rougher than that of the As-R sample. 1000℃-A samples were covered by coarse granular oxides and the roughness were about 0.56 μm. Vacuum sub-group samples showed a more smooth surface than air sub-group samples, and the oxide film was more dense. Due to variability of the surface treatment and heat treatment conditions, the process of the oxide formation seems to be affected thereby making the corrosion properties and surface micro-morphology different. However, more various electrochemical analysis together with surface analysis, and an investigation for the effects of those on the osteoblast cell adhesion and calcium phosphate apposition are needed for the improvement of the osseointegration rates of the titanium implants.

      • GHA 기반의 홍채 인식 시스템에 관한 연구

        주동현,염동훈,고기영,박용기,김두영 동아대학교 정보기술연구소 2001 情報通信硏究所論文誌 Vol.9 No.1

        본 논문은 Biometrics분야 중 다른 생체학적 특징보다도 정확도면에서 가장 뛰어난 특징인 안구의 홍채 패턴을 이용하여 사용자를 인증 하는 시스템에 관한 연구이다. 입력된 안구 영상으로부터 전처리 과정을 거쳐 극좌표 변환을 통해 홍채 패턴을 추출한 후 웨이블릿 변환을 이용하여 특징패턴을 압축하였으며, PCA(Principal Component Analysis:주성분 해석)의 한 종류인 GHA(Generalized Hebbian Algorithm)를 사용하여 등록된 사용자의 패턴 DB에서 Basis 배열을 추출하고, 구축된 Basis 배열과 입력 영상 패턴과의 비교 Matching을 통하여 사용자를 인증하는 시스템을 제안한다.

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