養液의 이온濃度 差異가 케일의 生長에 미치는 影響

지성한,이관호 호남대학교산업기술연구소 1997 산업기술연구논문집 Vol.4 No.-

신선하고 영양이 풍부한 녹즙재료로 이용되는 케일의 양액재배시 적정 이온농도 범위를 구명하기 위해 EC 0.8∼2.5 mS/cm 사이의 4수준의 양액농도에서 생장반응을 조사했다. 양액의 EC는 정식후 10일 경부터 저하하기 시작했으나 비교적 변화가 적은 반면, pH의 경우는 그 변화진폭이 매우 크게 나타났다. 양액이온농도가 높을수록 생장이 왕성했으며 특히 엽 생체중에서 표준농도는 1/4배 농도의 3.2배를 기록하였다. 총 건물중은 생체중과 유사한 결과를 보였으나 3/4배 농도와 표준농도간의 통계적 유의성은 인정되지 않았고 고농도일수록 葉 건물분배율은 증가한 반면 根 건물분배율은 낮아졌다. T/R 율은 1/4배 농도에서 가장 작았고 SLA는 반대로 저농도일수록 크게 나타났다. 이상의 결과로부터 케일의 담액수경재배에서 최대수량 확보를 위해서는 원시균형양액의 3/4과 1배 농도(EC 2.0∼2.5 mS/cm)범위로 관리하는 것이 적당한 것으로 판명되었다. The effect of 4 different ionic strengths of nutrient solution on growth in hydroponically grown kale was investigated. The plant growth increased with increasing ionic strength of nutrient solution. Specially in leaf fresh weight, there was a large difference between 1/4 strength and standard strength. The dry matter distribution in the leaf also increased with inoic strength of nutrient solution but not that in root. The 1.4 strength of nutrient solution was resulted in lowest T/R ratio and heighest SLA. In conclusion the 3.4 stregth and standard nutrient solution(EC 2.0∼2.5 mS/cm) are thought to be suitable for high yield of leaf in hydroponically grown kale plant.

Mossbauer 분광법을 이용한 10MnO₂-10Fe₂O₃-30Na₂O-50SiO₂유리내의 Fe³+ 이온에 관한 연구

朴冠鎬,洪性樂,洪致裕,白承道 濟州大學校 基礎科學硏究所 1988 基礎科學硏究 Vol.1 No.1

We have studied the Mossbauer parameters for ?? ion in the quenched glass and heat treated glasses. The Mossbauer spectra of the quenched glass were investigated at various temperatures from 60K to 300K. Using the center shift and kinetic temperature, the Debye and Einstein temperatures were calculated. The quenched glass was heat-treated at various temperatures from 530℃ to 710℃ for five hours. Both the isomer shit and quadrupole splitting parameters decreased near 590℃. And regardless of heat treatment, the ?? ion was predominantly octahedrally coordinated.

現代 속의 僧伽像

李智冠 동국대학교 불교대학 1975 東國思想 Vol.8 No.-

10MgO-10Fe_2O_3-30Na_2O-5OSiO_2 유리의 Mo¨ssbauer 효과 연구

홍치유,박관호,백승도,문찬호,조수열 동국대학교 1987 論文集 Vol.26 No.-

The Mo¨ssbauer effect studies of the quenched glass and heat-treated glasses were performed. The Debye and Einstien temperatures of the quenched glass, determined using the center shift and kinetic temperature, are 540K and 430K respectively. The X-ray diffraction pattern showed that the heat-treated glasses were crystallized. Form the isomer shift of the heat-treated glasses, it was concluded that the Fe^(3+) ion is predominantly octahedrally coordinated.

Mo¨ssbauer 분광법을 이용한 10MnO_2-10Fe_2O_3-30Na_2O-50SiO_2 유리내의 Fe^3+ 이온에 관한 연구

洪致裕,朴冠鎬,白承道,洪性樂 동국대학교 1986 論文集 Vol.25 No.-

We have studied the Mo¨ssbauer parameters for Fe^(3+) ion in the quenched glass and heat treated glass and heat treated glasses. The Mo¨ssbauer spectra of the quenched glass were investigated at various temperatures from 60K to 300K. Using the center shift and kinetic temperature, the Debye and einstein temperatures were calculated. The quenched glass was heat-treated at various temperatures from 530℃ to 710℃ for five hours. Both the isomer shit and quadrupole splitting parameters decreased near 590℃. And regardless of heat treatment, the Fe^(3+) ion was predominantly octahedrally coordinated.

메타 정보를 이용한 다형식 데이터파일에서의 수출주문 정보추출기에 관한 연구

강효관,한치근 경희대학교 산학협력기술연구원 2000 산학협력기술연구논문집 Vol.6 No.-

In this paper, we describe an order information extractor from multiple formats of data files. The information of orders from many importers in the world has various formats written in HTML and the variety of the formats makes automatic processing of the information difficult, In this paper, we propose an approach that constructs meta data files for the order information and classifies each information such as company name, address, according to the meta data file. The approach was actually implemented using real world order data set.

항경련제 투여 환아의 간기능 변화

황치관,이건수,안인철 충남대학교 의과대학 지역사회의학연구소 2000 충남의대잡지 Vol.27 No.1

Routine liver function test is done in epileptic children receiving antiepileptic drugs to prevent hepatotoxicity induced by these drugs. The abnormalities of liver function test are rarely seen, but these abnormalities accompanied by the clinical manifestation of hepatotoxicity are seldomly seen. This study carried out in order to assess the efficacy of routine liver function test in epileptic children. We examed the changes of the serum level of aspartate transferase(AST), alanine aminotransferase(ALT), total bilirubin, total protein, albumine, alkaline phosphatase(ALP) before and after antiepileptic drug medication in 60 epileptic children who had been receiving valproic acid(n=25명), ethosuximide(n=6명), carbamazepine(n=4명), valproic acid and carbamazepine(n= 14명), and other polytherapy(n=11명) for 3months or more. Results are as follows ; 1) The difference in each groups according to age, duration of treatment, and drug plasma concentration was not found. 2) AST was within normal range in any group, but decreased after valproic acid, ethosuximide, carbamazepine, and other polytherapy treatment. 3) ALT was within normal range in any group, but decreased after valproic acid treatment. 4) Total bilirubin, total protein, albumin, and ALP were within normal range in any groups. 5) Y-GT was within normal range, but the values were increasing tendency in polytherapy groups. 6) No clinical significant menifestations had developed during study period in any groups. The result suggest that the routine liver function test itself can not be the indicator of hepatotoxicity, and that the liver function test exammed when the clinical symptoms appear is more effective than the routine liver function test.

난소에 전이된 간세포암 1예

박용관,박치영,조은택,조기섭,박찬국,송창훈,이미자,기근홍 朝鮮大學校 附設 醫學硏究所 1995 The Medical Journal of Chosun University Vol.20 No.2

Hepatocellular carcinoma frequently metastasizes through direct extension, lymphatic, and hematogenous routes. The most common sites of metastasis are the lungs and the lymph nodes, glands, bones, spleen, kidneys, colon, and pleura are the sites of metastasis in decreasing order of frequency. But metastasis to the ovary is very rare. It is thought that metastasize to the ovary occurs through infiltration or dissemination. However, we observed ovarian metastasis of primary hepatic tumor in a 34-year old female who suffered from lower abdominal pain. At first, it was diagnosed as a primary ovarian tumor. But histologically, it presented sinusoidal pattern surrounded by the tumor cells and contained rounded by the tumor cells and contained round hyaline globules in minority of the cytoplasm. Then, the histologic features of percutaneous, sono-guided liver biopsy speecimen of the liver mass are similar to those of resected ovarian tissues. Therefore, we concluded that ovarian tumor was originated from hepatocellular carcinoma. In summary, this report examines a case of hepatocellular carcinoma with ovarian metastasis in a female and reviews the literature.

솔레노이드 밸브를 이용한 고압가스의 유량제어

심한섭,이치우,김남경,안국찬,남궁재관 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

Dynamic flow characteristics of a solenoid valve are affected by pressure difference in inlet and outlet of orifice, gas temperature, and supply voltage of a coil. In this paper, the dynamic flow characteristics for deviations of various conditions are studied Static and dynamic flow for variation on-time of a solenoid valve open signal are measured in basic bench test. The solenoid valve is applied to a compressed natural gas(CNG) engine test for validation of flow control performance. The experimental results show that flow of high pressure gas can controlled precisely by using a solenoid valve.

광주지역 황사기간중의 대기 건성침적량의 특성에 관한 연구

류일광,이치영,강영식,노기환,김관천,유경석,강동구 광주보건대학 2002 論文集 Vol.27 No.-

The deposition amounts of Ferric that are naturally originated elements from earth crust. The rate was 14,993㎎/㎡ day at the rang yellow sand season, which was 20 times higher than at the ordinary times. Artifical earth crust element Cr were lower than the amount yellow sand an increase. Naturally originated elements origination, movment channel and mutual be close the correlations of elements each other and were lower than in artificially originated elements. Deposition amount of chang were higher before yellow sand, lower before yellow sand of origination, time were inverse proportion. The average concentration of liquefactive metals high, compare heavy matal and numerous of deposition amount. A1so gain liquefactive matal were rescattering numerous on account of little mass deduction.