Selenium 공급방법이 수경재배 토마토의 생장과 Se 흡수에 미치는 영향

이철규(Cheol-Kyu Lee),조경철(Kyung-Cheol Cho),이정현(Jeong-Hyun Lee),조자용(Ja-Yong Cho),서범석(Beom-Seok Seo),양원모(Won-Mo Yang) (사)한국생물환경조절학회 2005 생물환경조절학회지 Vol.14 No.4

토마토 ‘모모타로’를 공시하여 셀레늄 10㎎ㆍL?¹의 관주 및 엽면시비 등의 단용 및 혼용처리가 수경재배 토마토의 생육 및 과실 내 셀레늄 축적 함량에 미치는 영향을 구명하였다. 토마토 종자를 50공 트레이에 파종하여 70일 동안 육묘한 후 유묘를 코코피트 슬라이브를 이용한 수경재배 시스템에 정식하였다. 양액은 일본원예시험장 배양액 표준처방으로 조성하였으며, pH 5.8~6.2와 EC 2.3 ㎎ㆍL?¹ 등으로 조절하여 공급하였다. 셀레늄은 무기태 SeO₂와 sugar fatty acid ester에 킬레이트화 한 유기태 셀레늄을 10 ㎎ㆍL?¹으로 조성하여 관주, 엽면시비, 관주와 엽면시비를 병행하여 처리하였다. 초장, 엽수, 엽면적 및 엽록소 등의 토마토 생장반응은 셀레늄의 엽면시비, 그리고 엽면시비와 관주를 병행한 처리구에서 현저히 증가하였다. 과실 내 셀레늄 축적 함량은 킬레이트화 한 유기태 셀레늄을 엽면시비와 관주를 병행하여 처리한 경우에 0.302 ㎎ㆍL?¹으로 가장 높았다. 무기태와 유기태 셀레늄의 엽면시비와 관주 등의 단용 처리 보다는 혼용 처리가 전반적인 과실 생장과 체내 셀레늄 축적에 효과적이었다. 무기태 설레늄(SeO₂) 보다는 sugar fatty acid ester에 킬레이트화한 유기태 셀레늄 처리가 셀레늄을 함유한 기능성 토마토의 수경재배에 더 효과적이었다. This study was conducted to clarify the effects of supplying methods of selenium on the growth and Se uptake of hydroponically grown tomato plants. Tomato seeds (Lycopersicum esculentum Mill. cv. Momotaro T-93, Daki Seed Co.) were sown in plug tray with fifty holes, and raised for sixty days. Tomato seedlings transplanted to coco fiber slabs were supplied with the nutrient solutions adjusted to EC 2.3 dSㆍm?¹ and pH 5.8~6.2 recommended by the Japanese Horticultural Experiment Station. Selenium forms used were inorganic SeO₂ (here in after referred to Se) and organic selenium chelated with sugar fatty acid ester (here in after referred to chelated-Se). 10 ppm selenium solutions were treated to tomato plants with foliar applications, drenching, and foliar application plus drenching. Growth characteristics in terms of plant height, number of leaves, leaf area and chlorophyll content were significantly increased in the plot of foliar application of Se, and in the plot of foliar application plus drenching of chelated-Se than other plots, respectively. Transported contents of selenium into the tomato fruits were highest as 0.302 ppm in the plot of foliar application plus drenching of chelated-Se. Also, it had tended to be higher in the plot of foliar application plus drenching than in the plots of foliar application or drenching in both of Se and chelated-Se. Foliar application and drenching of organic chelated-Se were effective to produce the functional tomato fruits.

참나무 幼齡化 접수에 의한 接木法 開發에 관한 연구

趙顯瑞,李喆浩,秋甲喆 진주산업대학교 1999 論文集 Vol.38 No.-

To obtain effective grafting propagation method, grafted rejuvenation shoots at seedlings of Q. acutissima, Q. aliena and Q. dentata, respectively. The result investigated at April and October are as follows: The survival ratio of Q. acutissima, Q. aliena and Q. dentata in grafting at April were 75%, 58% and 51%, and at October were 87%, 76% and 71%, respectively. The height of Q. acutissima which grafted cuttings growth highest, was 120㎝, Q. aliena and Q. dentata were 80㎝ and 71㎝. Grafting method by rooted cuttings at seedlings at Q. acutissima is most effective.

하악골에 발생된 Low grade 골육종:증례보고

조현이,정종철,김호성,최재욱,성대경,서지훈,김성범,이계혁 大韓顎顔面成形再建外科學會 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.1

Osteosarcoma is a primary malignant tumor arising most often in the long bone, but rare in jaw bone. Especially osteogenic sarcoma of the mandible is a rare tumor, comprising less than 0.5% of all head and neck tumors. Osteosarcoma occurs cheifly in young persons, and presenting very survival rates. Histopathologically this tumor can be classified three types, osteoblastic, fibroblastic, chondroblastic and classified from low grade to high grade by anaplasia or mitosis of the tumor cells. Sometimes, the exact diagnosis of osteosarcoma is difficult especially in low grade osteosarcoma, even if clinical or radiographical findings suggest to osteosarcoma. So suspcious to malignant bone tumor in clinical or radiological findings, biopsy should be taked from deep portion and multiple area, and sharing the patient history and radiographs with pathologist will assist in the development of the diagnosis. We report a case of low grade osteosarcoma on the mandible initially difficulty in accurate diagnosis. The patient visited our hospital for routine dental treatment but radiographic findings displayed ill-defined radiolucency with osteoid formation on the mandible. Final diagnosis was difficulty in initial biopsy but subsequent biopsy taked from deep portion presented infiltrative growth and mitosis of the tumor cell in some area with small osteoid bone formation, so we could reach final diagnosis as low grade sarcoma. We treated this patient with bloc resection of the mandible and immediate reconstruction with iliac corticocancellous block.

이중에너지 방사선 흡수계측법을 이용한 성인 남녀의 장골 및 경골의 골밀도에 관한 연구

조용석,김경원,이경호,박현진,서상수,오상엽 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.3

Purpose : The aim of this study was to evaluate the bone mineral density of iliac and tibial bone which are frequently selected as autogenic bone graft donor sites, and to evaluate the efficiency of this method as a guideline for the selection of bone graft donor site. Materials and Methods : In this study 61 male and 70 female volunteers at Chungbuk National University Hospital were involved between Jan. 1998 to Sept. 1999. We measured bone mineral density of the iliac and the tibial bone using dual energy X-ray absorptiometry. We evaluated the data using the SAS system for Windows and bone mineral density of the lumbar was used for control. Results : Age showed the highest correlation in correlation matrix between physical and bone variables. Height and weight showed lower correlation of linear increment. In man, the change of bone density according to age demonstrated linear decrease irrespective of the lumbar, ilium, and tibia. In woman, the change of bone density according to age showed cubic form, which increased in the third and forth decade. So it had a peak bone mass on about 35 year-old, thereafter, the change of bone density slowly decreased until 50 year-old, but it rapidly decreased after 50 year-old and it slowly decreased again after 65 year-old. Both in all subjects and subject with osteoporosis, the change of bone mineral density according to age showed statistically significant decrease in lumbar and tibia, but ilium was irrespective. Conclusion : In patients of aged or with osteoporosis, ilium demonstrated less tendency of decrease in bone mineral density than tibla. So this preliminary study suggested that ilium seemed better donor site for autogenic bone graft than tibia.

삼나무와 편백林分의 地位指數에 關한 硏究

趙顯瑞 진주산업대학교 1989 論文集 Vol.27 No.-

Result from comparing the site indices of Cryptomeria japonica and Chamaecyparis obtusa calculated by the Burce method. 1. Among them, the model of H=aT^becT was evaluated to be best fit for estimating average tree height(H) with tree age(T). 2. Equations, InH=1.0223+0.10181nT-3.8125^1/T and InT=1.0052+0.1129InT-3.26871/T were situated form the model for estimating average tree height of Cryptomeria japonica and Chamaecyparis obtusa. 3. Site indices of Cryptomeria japonica were higher than those of Chamaecyparis obtusa up to the site index classes of 4 and 6, however, the relationship was reversed each other when the site index classes were increased to over 8 and 10. Considering the site indices obtained, the nutritional requirement of Chamaecyparis obtusa was found to be higher than that of Cryptomeria japonica. Under the circumstance, it is recommendable to grow Chamaecyparis obtusa in relatively fertile soil and Cryptomeria japonica in lower fertile soil. The critical value for choosing the site was considered to be site index class 8.

FINITE ELEMENT ANALYSIS OF MAXILLARY CENTRAL INCISORS RESTORED WITH VARIOUS POST-AND-CORE APPLICATIONS

서민석,손원준,이우철,유현미,조병훈,백승호 大韓齒科保存學會 2009 Restorative Dentistry & Endodontics Vol.34 No.4

근관 치료된 치아의 수복에 있어서 파절은 가장 중요하게 고려되는 점이다. 포스트를 사용해서 수복한다는 것은 치수와 다른 단단한 물질을 근관 내에 삽입한다는 것으로 자연스럽지 못한 구조를 만들어서 고유의 응력분산을 변화시킨다. 오랫동안 수많이 in vitro 연구들이 post-and-core로 수복된 치아의 파절 저항에 대해서 이루어졌지만 어떤 것이 최상의 선택인지에 대해서는 많은 상충되는 관점들이 존재한다. 본 연구의 목적은 유한요소분석법을 사용하여 post-and-core system의 물리적인 성질이 치질의 응력분산에 미치는 영향을 분석하고 어떤 조합이 파절 저항에 도움이 되는지를 알아보는 것이다. 근관 치료된 상악 중절치를 삼차원 유한 요소법으로 Modeling하였다. 1.5 mm의 ferrule 높이를 부여하고 외관은 zirconia ceramic crown으로 지정하였다. 세가지 평행한 형태의 포스트 (zirconia ceramic, glass fiber, and stain-less steel)와 두 가치 코어 (Paracore and Tetric ceram) 물질을 6개의 모델로 조합하였다. 각각의 모델은 해면골, 피질골, 치주인대 , 그리고 4 mm 근관 충전을 가지도록 설계하였다. 50 N의 정적인 교합력이 치아 장축에서 60도 각도로 치관의 설면에 적용시켰다. 모델들의 응력전달 특징의 차이를 분석하였고, 결과를 나타내는 데는 Maximum von Mises stress 값을 사용하였고 최대 변위량과 정수압도 계산하였다. Glass fiber post로 수복된 경우 높은 탄성계수를 가진 레진 코어 모델 (29.14 MPa)에서 낮은 탄성계수의 코어 모델(29.21 MPa)보다 더 낮은 응력이 발생하였다. Glass fiber post로 수복된 모델 (0.03497-0.03499 mm)은 다른 포스트로 수복된 모델들 (0.03245-0.03452 mm)보다 더 많은 최대 변위량을 보였다. 이는 glass fiber post로 수복된 치아의 경우가 상대적으로 치아에 가해지는 힘에 의해 더 많이 움직였다는 것을 보여준다. Zirconia ceramic 이나 stainless steel과 같이 탄성계수가 큰 포스트는 응력을 증가시키지만 포스트가 스트레스를 대부분 흡수하여 치질에는 스트레스가 낮게 나타났다. Glass fiber post로 수복된 모델에서는 코어와 크라운이 만나는 순면 치경부에서 가장 높은 응력이 발생하였다. The purpose of this study was to investigate the effect of rigidity of post core systems on stress disthbution by the theoretical technique, finite element stress-analysis method. Three-dimensional finite element models simulating an endodontically treated maxillary central incisor restored with a zirconia ceramic crown were prepared and 1.5 mm ferrule height was provided. Each model contained cortical bone, trabecular bone, periodontal ligament, 4 mm apical root canal filling, and post-and-core. Six combinations of three parallel type post (zirconia ceramic, glass fiber, and stainless steel) and two core (Paracore and Tetric ceram) materials were evaluated, respectively. A 50 N static occlusal load was applied to the palatal Surface of the crown with a 60° angle to the long axis of the tooth. The differences in stress transfer characteristics of the models were analyzed. von Mises stresses were chosen for presentation of results and maximum displacement and hydrostatic pressure were also calculated. An increase of the elastic modulus of the post material increased the stress, but shifted the maximum stress location from the dentin surface to the post material. Buccal side of cervical region (junction of core and crown) of the glass fiber post restored tooth was subjected to the highest stress concentration. Maximum von Mises stress in the remaining radicular tooth structure for low elastic modulus resin core (29.21 MPa) was slightly higher than that for high elastic modulus resin core (29.14 MPa) in case of glass fiber post. Maximum displacement of glass fiber post restored tooth was higher than that of zirconia ceramic or stainless steel post restored tooth.

Information Technology의 기존 관광산업에 대한 영향 및 향후 Trend에 대한 전망 : 사이버여행사 수익모델을 중심으로 Profit Model of Cyber Travel Agency

조현준,나윤중,임형순,엄서호 한국문화관광학회 2001 문화관광연구 Vol.3 No.1

IT has an influence on the travel agency as chance and threat. The purpose of this study is to find what profit model of cyber travel agency. Ernst&Young's five business profit models that are based on target audience and transaction focus is selected to evaluated existing model of cyber travel agency. Those are off-line facilitator, gateway, context provider, commerce destination, online exchange. The result of this study show that there is no specific profit model in domestic cyber and on-offline travel agencies. Just Portal cyber travel agencies abroad have a few profit model. They have online exchange model, which are various target audience and abound provide contents.

RAPD分析法에 의한 참나무 優良種의 PCR反應 分析

趙顯瑞,李喆浩,李正煥 진주산업대학교 1999 산업과학기술연구소보 Vol.- No.6

RAPD를 이용한 참나무류의 band pattern은 primer의 종류에 따라 공시 수종별로 구분이 가능한 표식인자(marker)를 가지고 있었고, 상수리나무 (lane 1-11) band pattern에서는 고유 band를 보였다. Primer OPA-10, OPA-16에서 갈졸참나무 (lane 28)은 갈참나무(lane 22-25) 및 졸참나무 (lane 12-17)와 공유 band가 있었으마, 갈참나무와 유사한 band pattern을 보여 갈참나무와 유사한 경향을 보였다. 촐참나무 (lane 12∼17), 갈참나무 (lane23∼27)와 갈졸참나무(lane28) 집단 간에는 유사한 band pattern을 보여 갈졸참나무가 갈참나무에 근접한 교잡종으로 인식되었다. 군집분석결과 28개 집단은 7개 Grpup로 분류되었는데, 제1 집단은 상수리나무, 제 2 집단은 갈참나무, 제 3집단은 졸참나무 등으로 집단간 종의 구분이 가능하였다. In the Polymerase Chain Reaction (PCR) - Random Amplified Polymerase (RAPD) DNA analysis was performed on DNA samples obtained from leaf collected from wild Quercus spp. in Kyeongnam Province. PCR - DNA markers were used as a predictor of superior tree in future Quercus spp. breeding development. Eight primers were used for PCR and generated a total of 122 RAPD markers. According to the PCR products bands of Q. acutissima (lane 1-11), Q. serrata (lane 12-17), Q. uariabilis (lane 18-22), Q. aliena (lane 23-27) a n d Quercus x urticaefolia (lane28) were detected in all samples. Genetic relationships among the 28 individual samples were analyzed by the cluster analysis of 122 RAPD markers, which divides seven groups. According to the cluster analyses, First group are contains Q. acrtissima. Second group are Q. aliena, third group Q. serrata and so on. And close relationship between Quercus x urticaefolia and Q. aliena were ascertained by cluster analysis.

교잡종 찰옥수수에 대한 연구 III : Ⅲ. 국내 옥수수 유전자원 수집종에 대한 주요 특성 분포

서정은,주현민,최윤표,홍범용,조양희,주정일,지희정,이희봉 충남대학교 농업과학연구소 2007 농업과학연구 Vol.34 No.2

2006년 국내 각 지역으로부터 수집된 재래종옥수수 유전자원을 관행방법에 의해 파종하고 주요특성별로 분포도를 살펴본 결과는 다음과 같다. 1. 수집된 유전자원에 대한 발아율은 대부분 80∼100%이상의 분포를 보였으나, 일부 수집계통에는 30% 미만의 극히 저조한 발아율을 보였다. 2. 수집자원에 대한 초기생육을 살펴보면 극히 생육이 저조한 것이 40% 정도를 보였고, 극히 우수한 자원은 3%미만으로 나타났다. 3. 간장은 대부분이 150∼199cm범위에 55%가 분포하고 있었으나, l00cm이하가 5%, 250cm이상이 8%로 나타나 수집종간에 큰 차이를 보였다. 4. 주당 분얼수는 1개 미만이 40%의 분포를 보였으나, 일부 수집종에서 2 내지 3개의 분얼수를 보이는 계통이 확인되었다. 5. 개화소요일수는 61∼64일의 범위에서 40%, 57∼60일의 범위에서 30%의 분포를 보였으며, 특히 일부 수집종의 경우 55일 이하의 극조생종도 10% 정도의 분포를 보였다. 6. 이삭길이는 대부분 11∼15cm범위에 60%가 포함되어 있으나, 일부계통에서 5cm미만이 2%, 16∼20cm의 이삭길이도 10%가 분포하였다. Germination ratio on the 300 collected genetic resources showed 80 to 100 percentage, but those of some accessions were very low as below 30 percentage. Early growth phase of most of these lines were very poor while some collected lines were very vigor. Range of stem height showed from 150 to 199cm, but that of some accessions showed below 100cm as five percentage and some of them was over 250cm as eight percentage. Number of tillers per plant appeared less one but some collected lines have two to three tillers per plant. In days to tasseling, some accessions showed more four per plant. Ear length of these accession showed above 60 percentage as 11 to 15cm, while that of some collected lines showed over 10 percentage as 16 to 20cm.

유방암의 위와 대장전이

유현아,김은영,서민지,정은,조민정,오현진,장지혜,박지찬,이정의,박석영 이화여자대학교 의과학연구소 2014 EMJ (Ewha medical journal) Vol.37 No.2

Gastric metastasis from breast cancer is rare and only six cases have been reported in Korea. Colon metastasis is more rare than gastric metastasis. We report a 63-year-old woman with gastric and colon metastases of invasive lobular carcinoma of breast. She was diagnosed as right breast cancer, received right modified radical mastectomy 10 years ago and has been treated with chemotherapy and hormone therapy. Investigating for melena and a small caliber of stool, we found gastric and colon metastases. The diagnosis of metastatic breast cancer was made through gross pathologic and immunohistochemistry staining. We report a case with gastric and colon metastases from breast cancer and a review of the associated six case reports in Korea.