관상동맥질환을 동반한 모야모야병 1례

김동기,이영태,김기향,김성만,김대경,김두일,김동수 白中央醫療院 2005 仁濟醫學 Vol.26 No.1

Moyamoya disease is an occlusive intracranial arteriopathy with an abnormal cerebral vascular collateral networks. Although this disease is known to be associated with stenosis of extracranial arteries, such as the renal artery, a case associated with stenosis of the coronary artery is extremely rare. We report a case of coronary artery occlusive disease affected by Moyamoya disease. The patient was a 38-year-old female experiencing intermittent headache and exer tional chest pain. Cerebral MRI showed complete obstruction of both internal carotid arteries and abnormal cerebrovascular systems which confirmed Moyamoya disease. Coronary angiography showed a significant stenosis of left anterior descending coronary artery ostium with TIMI grade I collateral blood flow from the normal right coronary artery. After coronary artery stenting and medical treatment for headache, her subjective symptoms were relieved. In Moyamoya patient, an evaluation of the extracranial (especially coronary artery) vascular system should be considered if there are some evidences of coronary artery disease.

위암 환자의 복강내 투여를 위한 Activated Charcoal-Alginate Bead 제형으로부터 Mitomycin C의 용출 거동

이진호,최선웅,서중기,김동민,정경수,오정연,김진향,노승무,민병무,김용백,김창식,박근성,강대영,송규상,양준묵,조준식,정현용,김학용,인현빈 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

Locoregional recurrence is the most common type of recurrence in surgical operation of gastric adenocarcinoma, and peritoneal dissemination is one of the most difficult problems in advanced gastric adenocarcinoma treatment. Because the peritoneal cavity is the most common site of the first recurrence after gastric cancer resection, intraperitoneal chemotherapy seems a logical choice for cancer chemotherapy. In this study, Mitomycin C (MMC)-activated charcoal (CH)-alginate (ALG) beads were prepared by the mixtures of CH particles adsorbed with MMC as an anti-cancer drug and aqueous alginate solution. The alginate is recognized as biodegradable, nontoxic, and biocompatible. The release of MMC from the beads in 0.1 M Tris buffer was stable and continuous until about 1 week. The MMC-CH-ALG beads can be applied in the peritoneal cavity for intraperitoneal chemotherapy since they provide a good adhesiveness on the tissue and controlled release pattern of the drugs.

Flangeless Esser PET Phantom 영상 자동 분석 프로그램의 유용성 평가

남궁창경,남기표,김경식,김정선,임기천,신상기,조시만,동경래,NamGung, Chang-Kyeong,Nam, Ki-Pyo,Kim, Kyeong-Sik,Kim, Jeong-Seon,Lim, Ki-Cheon,Shin, Sang-Ki,Cho, Shee-Man,Dong, Kyung-Rae 대한핵의학기술학회 2009 핵의학 기술 Vol.13 No.1

Purpose: ACR (American College of Radiology) offers variable parameters to PET/CT quality control by using ACR Phantom. ACR Phantom was made to evaluate parameters which are uniformity, attenuation, scatter, contrast and resolution. Manual analysis method wasn't good for the use of QC because values of parameter were changed as it may user and it takes long time to analysis. Ki-Chun Lim, a nuclear scientist in AMC, developed program that automatically analysis values of parameter by using ACR Phantom to overcome above problems. In this study, we evaluated automatic analysis program's usability, through the comparing SUV of each method, reproducibility of SUV when repeated analysis and the time required. Materials and Methods: Using Flangeless Esser PET Phantom, the ideal ratio of 4 : 1 hot cylinder and BKG but it actually showed a ratio of 3.89 to 1 hot cylinder and BKG. SIEMENS Biograph True Point 40 was used in this study. We obtained images using ACR phantom at Fusion WB PET Scan condition (2 min/bed) and 120 kV, 100 mAs CT condition. Using True X method, 3 iterations, 14 subsets, Gaussian filter, FWHM 4 mm and Zoom Factor 1.0, $168{\times}168$ image size. We obtained Max. & Min. SUV and SUV Mean values at Cylinder (8, 12, 16, 25 mm, Air, Bone, Water, BKG) by automatic program and obtained SUV by manual method. After that, we compared manual and automatic method. we estimate the time required from opened the image data to final work sheet was completed. Results: Automatic program always showed same result and same the time required. At 8, 12, 16 and 25 m cylinder, manual method showed 6.69, 3.46, 2.59, 1.24 CV values. The larger cylinder size became, the smaller CV became. In manual method, bone, air, water's CV were over 9.9 except BKG (2.32). Obtained CV of Mean SUV showed BKG was low (0.85) and bone was high (7.52). The time required was 45 second, 882 second respectably. Conclusions: As a result of difference automatic method and manual method, automatic method showed always same result, manual method showed that the smaller hot cylinders became, the lager CV became. Hot cylinders mean region size, the smaller hot cylinder size becomes we had some trouble in doing ROI poison setting. And it means increase in variation of SUV. The Study showed the time required of automatic method was shorten then manual method.

窒素, 燐酸 및 加里의 施肥水準이 藥用作物 仙鶴草(Agrimonia pilosa L.)의 生育 및 收量에 미치는 影響

김현경,황필성,이용호,김기영,정대수 東亞大學校 大學院 2000 大學院論文集 Vol.25 No.-

This study was carried out to determine the effect of various fertilizer levels on the growth and yield of Agrimony. this experiment was conducted for 2years from 1998 to 1999 in Medicinal Plant Experiment Station, Kyungnam ARES. The results obtainned were summarized as follows : 1. The growth characteristics such as plant height, tillers and leaf numbers were more increased at 22-10-10 plot than of other fertilizer levels. 2. Variations of percent flowering of Agrimonia pilosa L. treated with different fertilizer levels were more increased at 22-10-10 plot than of other fertilizer levels. 3. Yield per 10a of Agrimonia pilosa L., Fresh weight was 1,500kg in 22-10-10 plot, and 243kg in non-treatment plot. The dry weight was 736kg in 22-10-10 plot, and 96kg in non-treatment plot. Yield of Seed and Fruit following to different application levels was highest at the fertilizing plot of N, P2O5, K2O=22-10-10.

중소도시 하수관거의 침입수량 및 수질오염 원단위 산정

김옥형,박승기,정재훈,임경호 公州大學校 工學硏究院 生産技術硏究所 2004 論文集 Vol.12 No.-

The volume of wastewater in combined sewers in study areas usually exceeds capacities of the sewer system or the treatment plant during storms. For this reason, combined sewer systems are designed to overflow occasionally and discharge excess waste water. The 6 monitoring sites were selected from two small cities near the Hongsung prefecture during over a rainy season. Monitoring was performed by collecting grab samples and by measuring the rainfall and flow rates during dry and wet seasons. Generally the flow rate of wastewater in combined sewers was rapidly decreased after 23:00 PM and gradually increased from 06:30 AM in all sites during the dry season. Due to monitoring and statistical analysis, the groundwater contributes on sewage volume increase (average 3.4-25.4% more) during experimental periods. Therefore, this research is focus on the investigation of the effects of stormwater and groundwater to combined sewer systems.

칼만증후군(Kallmann's Syndrome) 1례

김용성,백승훈,유경훈,구기선,형근영,김경년,조정구 圓光大學校 醫科學硏究所 1997 圓光醫科學 Vol.13 No.1-2

Kallmann's syndrome is the most common form of isolated gonadotropin deficiency, characterized by hypogonadotropic hypogonadism due to GnRH deficiency, delayed puberty and smelling difficulty. It occurs sporadic or familial pattern, and the mode of inheritence has not been fully documented. The defect in patient of Kallmann's syndrome occurs at suprapituitary level involving mechanism that regulate GnRH synthesis or release, so this syndrome classified as a secondary hypogonadotropic hypogonadism. The gonadotropin or pulsatile GnRH administration enable successful stimulation of spermatogenesis and fertility. We have experienced 1 patient with Kallmann's syndrome and presented with the review of the literature.

토끼 해마손상이 흔적조건화의 습득과 소거에 미치는 영향

김혜경,김기석 한국심리학회 1989 한국심리학회지 생물 및 생리 Vol.1 No.1

토끼의 순막반응을 사용한 흔적조건화의 습득과 소거에 해마손상이 미치는 효과를 알아보고자 하였다. 해마손상동물과 모의시술 통제동물은 7일간 흔적조건화 훈련을 받았고, 3일간 소거시행을 받았다. 해마손상은 흔적조건화 습득에는 아무런 영향을 주지 않았으나 소거시행에는 영향을 주어, 해마손상동물은 모의시술 통제동물에 비해 평균 조건반응율이 높았다. 통제동물의 경우 소거시행시에 반응개시 시간이 점점 늦어지는데 반해 해마손상동물은 조건화시행때의 반응개시시간과 비슷한 수준을 계속 유지하였다. 이같은 결과는 해마가 흔적조건화에 필수적으로 관여하는 구조물은 아니지만 소거에는 관여한다는 것을 나타내며, 시간정보처리면에서 해마가 부적절자극을 배제하는 주의과정과 관련되어 있음을 시사한다. Effects of hippocampal lesions on the acquisition and extinction of classical trace conditioned responses were examined using the rabbit nictitating membrane preparation. After the lesion, rabbits received trace conditioning for 7 days and then were given extinction sessions for 3 days. During the trace conditioning, hippocampal lesion had no effect on the acquisition of response and onset latency. During extinction, however, the hippocampal lesioned rabbits showed significantly more responses than those of the sham-operated ones. And the lesioned showed no change in mean response latency, while the sham-operated exhibied progressive increase in the latency. The results suggest that hippocampus is not necessary for trace conditioning but involved in extinction process. Discussion was made within the context of the temporal processing approach which involves the hippocampus in attention process that enables the organism to learn to ignore irrelevant stimuli.

논토양중 카드뮴 유효도와 수도의 흡수이행에 미치는 석회 및 Humic acid 사용효과

김민경,김원일,정구복,박광래,윤순강,엄기철 한국환경농학회 2004 한국환경농학회지 Vol.23 No.1

토양중 중금속이 식물에 흡수 및 이행되는 것을 경감시켜 여기에서 생산된 농산물의 안전성 향상을 위한 기초자료를 확보하고 논토양의 카드뮴 유효도와 흡수이행에 미치는 석회와 humic acid 처리 효과를 구명하기 위하여 실내경험과 포트실험을 수행하였다. 실내실험에서 공시토양에 2.5와 5.0 ton/ha의 석회와 1%와 2% humic acid를 처리한 후 토양중 가용성 카드뮴 함량 변화를 조사한 결과, 두 처리 모두 14일까지는 담수상태에서 처리효과로 인하여 가용성 카드뮴 함량이 감소하다가 그 이후에는 토양의 완충능에 의해 다시 증가하는 경향이었다. 이때, 토양의 가용성 카드뮴 함량은 토양 pH 및 양이온치환용량과 부의 상관이 있었다. 2.5 ton/ha의 석회와 1% 의 humic acid를 처리한 후 담수시켜 안정화된 다음 벼를 재배하여 조사한 결과, 석회와 humic acid 처리에 비해 분얼기와 수확기의 치화태 및 수용태 카드뮴 함량이 낮아졌으나, 분얼기에 비해 수확기에 토양중 이동이 어려운 산화물 및 탄산염태와 황화물 및 잔류태의 함량이 증가하였다. 식물에 흡수가 용이한 형태로 알려진 치환태와 수용태는 모두 토양 pH와 고도의 부의 상관이 있었다. 수확기의 줄기, 잎 및 현미 건물중은 석회 및 humic acide 처리구에서 대조구에 비해 모두 높았고, 특히 석회 처리구의 건물중이 현저하게 높았다. 석회 처리구에서 줄기와 잎의 카드뮴 함량은 각각 1.01과 0.37㎎/㎏으로 대조구와 비슷하였으나, 뿌리나 현미의 카드뮴 ?량은 각각 2.11과 0.09㎎/㎏으로 대조구에 비해 낮았다. 지상부와 뿌리의 카드뮴 함량은 humic acid 처리에 의해 현저히 낮아졌으며, 특히 현미로의 카드뮴 이행도 월등히 낮게 나타난다. This study was conducted to know the effect of lime and humic acid on cadmium availability and its uptake by plant grown in contaminated paddy soils with heavy metal. The treatment levels of lime were 2.5 and 5.0 ton/ha and that of humic acid were 1 and 2%. The contents of 0.1 N HCl extractable Cd were reduced with lime and humic acid and were negatively correlated with CEC as well as soil pH. The sequential extraction procedure was used to fractionate the heavy metals in soil into the designated from exchangeable (0.5 M KNO₃), water soluble (H₂O), organically bound (0.5 M NaOH), carbonate (0.05 M Na₂-EDTA) and sulfide/residual (4 M HNO₃). In soil amended with 2.5 ton/ha lime and 1% humic acid, chemical forms of Cd at tillering stage were predominant exchangeable+water soluble extractable Cd, whereas that at harvesting stage were predominant carbonate+sulfide/residual extractable Cd. The exchangeable forms of Cd in soil with lime and humic acid were negatively correlated with soil pH during the harvesting period. Total absorbed Cd of paddy rice tended to occur in the order of root > stem > leaf > brown rice. Cd con- tents of brown rice with lime and humic acid treatment were 0.09 and 0.08 mg/kg, respectively. That were lower than control, 0.20 ㎎/㎏. It could be that treatment of lime and humic acid in polluted soil by heavy metals would reduce the uptake of heavy metals by plants and be a temporary method of reclamation at the highly heavy metal contaminated soils.

항공기용 착륙장치 완충기내 유동해석

김학봉,임경호,나기웅 한국 항공대학교 항공산업기술연구소 1996 航空宇宙産業技術硏究所 硏究誌 Vol.6 No.-

항공기 착륙장치 완충기내 유압유의 유동특성을 비정상, 비압축성 점성 유동방정식을 일반 곡선 운동좌표계에서 수치적인 방법으로 해석하였다. 수치 방정식은 일반적으로 그 특성이 잘 알려진 SIMPLE 방법으로 해석하였다. 해석된 결과는 오리피스를 지나는 정상유동에 대한 실험 유량계수와 비교함으로서 점검하였다. 두 가지의 동역학적 문제에 대하여 계산하여 실제 낙하시험 결과와 비교하였다. 모든 경우에 합리적인 결과들를 얻을 수 있었다. In this study, the flow characteristics of hydraulic oil in the shock absorber of aircraft landing gear is analyzed using numerical method for the unsteady incompressible Navier-Stokes equations in generalized moving coordinates. The discrete equations are solved by the SIMPLE method. The results are validated by comparing the discharge coefficient of an orifice with experimental results for the steady flow through it. two dynamical cases are computed and compared with an actual landing gear drop test. The obtained results are reasonable in all cases.

NGS 데이터를 기반으로 한 PGPR의 기능에 대한 분자생물학적 접근

황보경, 박상익, 김기윤, 사동민, 이이 忠北大學校 農業科學硏究所 2017 農業科學硏究 Vol.33 No.1

There are numerous nutrients, including essential elements, in the soil. Nevertheless, most of the nutrients that exist in the soil are not suitable for the growth of plants. Therefore, in agriculture, chemical fertilizers have been widely used for the increasing of crop production from long time ago. As a result, soil nutrient has been over accumulated, environment was polluted and pathogens gained resistance. As a solution about these problems, plant growth promoting rhizobacteria (PGPR) could be used for the promotion of plant growth instead of chemicals. Recently, numerous studies on microbial plant growth promoting (PGP) characters were conducted based on molecular biology like genome sequencing by next generation sequencing (NGS) technique. In this review, we discuss PGP characters about nitrogen fixation, solubilizing/mineralizing phosphorus, production of siderophore, degradation of ethylene and biosynthesis of IAA and cytokinin at gene level and predict the essential set of genes for the PGPR function.