슬관절통 환자에서 초저온 냉기를 이용한 한냉치료후시각적상사척도값의 변화

이정권,김미정,박시복,김영호 大韓再活醫學會 1999 Annals of Rehabilitation Medicine Vol.23 No.1

재발성 다발성 연골염

박용범,이시훈,정상윤,이수곤,홍순원,김정민,이창률 대한내과학회 2001 대한내과학회지 Vol.61 No.3

전남지역에 발병되는 가금티푸스의 역학적 특성에 관한 연구

박숙희,김중곤,김시욱 조선대학교 환경연구소 2001 環境硏究 Vol.17 No.2

The anato-pathological histopathological and microbiologic examinations were conducted with the chickens in 310 poultry farms in Jeollanamdo that entrusted Jeollanamdo Livestock Research Institute to diagnose fowl diseases from September 1998 to August 2001. Microbiologic isolation/identification, biological test as well as the antibiotic susceptibility test were carried out to the 58 strains of S. gallimarum isolated from the chickens in 58 poultry farms which were diagnosed to have fowl typhoid, epidemiological characteristics such as breeding region of the farms with incidences of fowl disease: occurring month, breed, and weeks of age: and the monthly change of average temperature, etc. were examined. The results were as follows ; Fowl typhoid were diagnosed in 58(18.7%) places among the 310 poultry farms where fowl diseases occurred. The incidence rate was the most frequently occurred in May∼August. The gross lesions of the chickens in the total of 58 farms infected with fowl typhoid were lever swelling and liver necrotic foci, spleen swelling, bronze liver, proventricular haemorrhage, heart nodular lesions. In the biochemical tests, all the 58 isolated strains were positive in methyl red; were negative in urea, H2S and indole productive test ; and had non motility. In the fermentive assay, they showed positive response to glucose, maltose, mannitol, dulcitol, and cellobiose; were negative to lactose, sucrose, and adonitol; glucose were without acid; and turned out to be positive in ducitol resolving power. The incidence rates according to the Jeollanamdo area were compared, 43(71%) of fowl typhoid broke out in the Northwest area; 12(23%) in the South area; 3(6%) in the Eastern area. The rate was higher in the broilers 39(67%) than in the layer 19(33%). Fowl typhoid occurred most frequently in the 2 weeks(38.4%), 5 weeks(25.6%) of age in the broilers, and in the initial period of breeding from above 20 to 30 weeks 11(58%) of age in the layer. In the antimicrobial drugs susceptiblity test to the isolated 58 strains of fowl typhoid, the antibiotics that showed high susceptibility above 80% were six kinds - Trimethoprim/ Sulfamethoxazole(93%), Cefoxitin(88%), Gentamicin(86%), Chloramphenicol(84%), Ampicillin(83%), Neomycine(81%) -, and those with 70∼50% of susceptibility were four kinds - Kanamycin(74%), Cephalothin(71%), Norfloxacin(67%), Tetracycline(55%). The other four kinds, Colistin(38%), Streptomycin(29%), Nalidixic acid(5%), Novobiocin(0%), showed very low susceptibility of below 50%.

음전하를 띤 Microsphere 에 의한 정전기적 반발력이 정밀여과에서 투과 플럭스에 미치는 영향 고찰

박정민,최성욱,방시원,함승주,김중현,김우식 한국화학공학회 2001 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.39 No.6

본 연구에서는 일정 압력하에서 음전하를 띤 microspheres의 정전기적 반발력에 따른 투과 플럭스의 변화에 관하여 고찰하였다. Microsphere의 정전기적 반발력에 관한 영향을 관찰하기 위해 표면전하 밀도(N_c: 0.45, 5.94, 10.25)가 각각 다른 poly(Styrene/Methacrylic acid) microspheres를 제조하였다. 교반속도는 300, 400, 600 rpm, 이온강도는 0.1, 0.01, 0.001로 변화시켜 실험하였다. 투과 플럭스는 표면전하밀도, 교반속도, 이온강도에 큰 영향을 받음을 알 수 있었으며, 투과 플럭스는 표면전하밀도가 클수록, 교반속도가 증가할수록, 이온강도가 작을수록 증가함을 알 수 있었다. 교반속도가 크면 막표면의 농도분극층의 두께가 얇아지기 때문에 투과 플럭스는 증가한다. 이온강도가 작을수록, 표면전하밀도(surface charge density)가 클수록 투과 플럭스가 커지는 원인은 microspheres의 정전기적 이중 층의 두께가 두꺼워짐에 따라 입자 사이의 거리가 멀어져 공극률(porosity)이 커지기 때문이다. 정상상태 플럭스 자료로부터 비 저항 정의식을 이용하여 케이크층의 공극률을 구할 수 있었다. 전하를 나타내지 않는 polystyrene microspheres의 입자크기가 480㎚일 때 농도분극 층의 이론적인 공극률은 0.211이었고, microspheres의 표면이 methacrylic acid로 완전히 개질된 것은 비 저항정의식에 의해 3.04로 계산되었다. 또한 microspheres들간의 정전기적 상호작용력이 작아지면 농도분극층의 공극률도 줄어드는 것을 알 수 있었다. The effect of the surface charge density(N_c: 0.45, 5.94, 9.14 and 10.25) and the stirrer speed(300, 400 and 600 rpm) on the variation of permeate flux was investigated in a stirred cell filled with negatively charged microspheres under constant pressure. It was found that the permeate flux depended on the surface charge density, the ionic strength and the stirrer speed. High permeate flux was obtained in the condition of high surface charge density, low ionic strength and high stirrer speed due to the force of electrostatic interaction between microspheres. The porosity of a cake layer was calculated from the steady-state flux data. It was found that the reduction of porosity was due to a decrease in repulsive interaction between microspheres.

直交異方性 鋼床板의 設計 自動化에 關한 硏究

朴祥鎭,朴英錫,鄭時潤,鄭泰周 명지대학교 공학기술연구소 1992 공학기술연구소 논문집 Vol.7 No.-

Generally, an orthotropic steel plate deck bridge is called an "orthotropic bridge". The orthotropic bridge deck consists of thin steel plate stiffened longitudinal ribs at right angles to the floor beams. As the rigidities of the ribs and floor beams are generally of unequal magnitude, elastic behaviour is different in each of these two main directions. Because ribs and floor beams are orthogonal and because their elastic properties are different, the system became known as orthogonal-anisotropic, or, briefly, orthotropic. Mathematically, this elastic property is described by Hook's law. Further, we assume that it is homogeneous. Of all the methods considered in deck analysis, the most practical is that of Pelican and Esslinger. In this method, the deck system is a continuous orthotropic plate, rigidly supported by its main girders and elastically supported by the floor beam. The design of steel plate decks with open or closed ribs is made in two computation steps. In the first step, it is assumed that the floor beams are infinitely rigid. In the second step, the effects of the floor beam elasticity are considered. M"uller-Breslau Theory and 3 moment-equation are used to analyze the behaviour of the continuous beam on elastic and rigid supports. Many procedure are programmed in order to accomplish the economic design and accuracy.

MWPC를 이용한 X-선 이미지 센서의 개발

박정병,문명국,이동명,구성모,조진호,김도성,우홍,도시홍,이상윤,강희동 경북대학교 센서기술연구소 1994 센서技術學術大會論文集 Vol.5 No.1

A digital X-ray image sensor system is described. A one-coordinate multiwire proportional counter plays the part of X-ray positioning sensor. This measures the distribution of X-ray intensity in horizontal direction with a 2mm channel. A two-dimensional image is produced by mechanical scanning with 2mm channel width in vertical direction. The number of pixels in the image is 32x32. The main characteristics of the sensor are: spatial resolution 1.4mm, counting rate capability 120kHz.

기능성 위장관 장애에서 혈청 IL-1β, IL-2,IL-6의 변화 : 우울증 및 스트레스와의 상관성

박시성,이상신,박무인,구자영,박제민,김명정 한국정신신체의학회 2002 정신신체의학 Vol.10 No.2

전남지역에 발병되는 가금티푸스의 역학적 특성에 관한 연구

박숙희,김중곤,김시욱 조선대학교 환경공해연구소 2001 環境公害硏究 Vol.17 No.2

내시경적 조임근절개술후에 발생한 췌십이지장 가성동맥류 1예

박수영,김윤정,박진한,전현수,박시형,이영진,이은지,김지현 仁濟大學校 白病院 2010 仁濟醫學 Vol.31 No.-

We reported a case of pancreatic pseudoaneurysm, involving pancreaticoduodenal artery, developed after endoscopic retrograde cholangiopancreatography(ERCP) with endoscopic sphinterotomy. A 54 year old woman was transferred to our hospital due to sustained hematochezia and hypovolemia. A week before admission, she underwent ERCP with endoscopic sphinterotomy for acute cholangitis in local clinics. She developed abdominal pain and hematochezia at 12 hours after the procedures. A post procedure contrast enhanced computed tomography of abdomen demonstrated a pseudoaneurysm in inferior portion of pancreatic head. This was not present on the pre procedure contrast enhanced computed tomography of abdomen and was thought to arise from the pancreaticoduodenal artery as a complication of the pre sphincterotomy. She was brought to our emergency room in a state of hypovolemia. A upper endoscopy showed active bleeding from ampula of vater. An celiac angiography demonstrated pancreatic pseudoaneurysm involving inferior pancreaticoduodenal artery and selective coil embolization of was performed.

UV-TiO_2 광촉매 반응기를 이용한 미생물의 살균효과

김시욱,이정섭,정혜광,박열,윤성명,유진철,이범규,이인화,박진열 조선대학교 환경연구소 1998 環境硏究 Vol.14 No.1

UV-TiO_2 반응기를 이용하여 Escherichia coli와 Aspergillus oryzae var. oryzae의 살균효과를 측정하였다. 254㎚에서 최대 14 watt의 자외선 방출량을 내는 램프를 원형 Pyrex유리관 중앙에 설치하였고 TiO_2는 석영관에 박막증착(Thin Film Coating)된 형태와 슬러리 형태로 나누어 회분식으로 살균정도를 측정하였다. E. coli에 대한 살균력은 1.7×10^7 cells/㎖에 대해 5분간 자외선 조사를 하였을 경우 2.0×10^2 cells/㎖으로 감소하였고, 자외선 조사와 함께 슬러리 형태의 TiO_2를 첨가하였을 경우에는 3.4×10 cells/㎖으로, 자외선 조사와 함께 TiO_2가 석영관에 박막증착된 경우에는 7.6×10^2 cells/㎖으로 감소하였다. 한편 위와 같은 조건에 유리관 하부에서 기포를 주입수 11분 동안 자외선을 조사시킨 경우에는 1.3×10^2 cells/㎖으로, 자외선 조사와 함께 슬러리 형태의 TiO_2를 첨가하였을 경우에는 1×102 cells/㎖으로, 자외선 조사와 함께 TiO_2가 박막증착된 경우에는 7.9×10 cells/㎖을 나타내었다. 결국 UV-TiO_2 반응기에 사용되는 TiO_2가 슬러리 형태일 때 최대 살균효과를 나타내었으나 기포가 첨가되었을때는 오히려 살균에 장애를 받는 것으로 나타난 반면 석영관에 박막증착된 경우에는 기포가 첨가되는 것이 살균에 효과적인 것으로 관찰되었다. The killing effect of UV-TiO_2 photocatalytic system on the Escherichia coli DH5-α and Aspergillus oryzae var. oryzae (KCTC 6095) was studied. The UV lamp which emits maximum 14 watts at 254 ㎚ was set on the center of pyrex round glass tube. Two types of TiO_2, one of which is slurry and another which is thin film coated form, were used to determine the killing effect. When UV was irradiated to 1.7×10^5 cells/㎖ of E. coli for 11 min, the living cell number decreased to 4.0×10^0 cells/㎖. The effect of UV system together with slurried TiO_2 was less than 1 cells/㎖, whereas that of UV-coated TiO_2 system decreased to 7.1×10^3 cells/㎖. To study the effect of bubble on the killing of microorganisms, air was bubbled to the bottom of glass tube. When 1.7×10^5 cells/㎖ were exposed to UV for 11 min in combination with air bubble, the living cell number decreased to 1.3×10^2 cells/㎖. In the same condition except the addition of slurried TiO_2, the living cells were 1×10^2 cells/㎖. However, more cells could be killed by the system which consists of UV, coated TiO_2, and air bubble (7.9×10^1 cells/㎖). From these results, it was found that UV-slurried system is the most effective one, but its killing effect is not stimulated by air bubble. However, bubbling was very effective in the UV-coated TiO_2 system.