冠岳樹木園地域內 荒廢山地土壤의 肥沃化를 통한 綠化促進에 關한 硏究

李宗學,麻鎬燮,權台鎬,李憲浩,禹保命 서울大學校農業生命科學大學附屬樹木園 1984 서울大學校 樹木園 硏究報告 Vol.- No.5

冠岳樹木園地域의 山腹斜面은 地質的으로 대보화강암에서 풍화생성된 거친 돌부수러기가 많은 粗砂質壤土로 구성되었으므로 表土層의 土壤流失이 심하여 土深이 대단히 얕거나 岩盤露出이 심하여 林木生長이 심히 不良한 地帶로서,山地의 地力恢復 및 現存하는 散生樹木의 生長力恢復을 通한 山地綠化保全이 시급히 요청되고 있다. 이와같은 요청에 부응하여 荒廢地斜面에 自生하고있는 주요한 4樹種(소나무, 리기다소나무, 노간주나무, 철쭉)에 대하여 山地施肥效果 試驗을 春期와 秋期로 나누어 실시한 결과 樹高 및 直徑生長量에 있어서 無施肥區에 比하여 현저한 施肥效果가 인정되었다. 따라서 冠岳山地帶의 荒廢地를 조속히 復舊綠化하기 위해서는 砂防土木的 工事方法 및 砂防造林的 播植方法이외에도 현존 수목의 保全 및 生長力恢復을 통한 速成綠化方法도 채용되어야 할 것이다. Hillsides in the Kwanak arboretum area were composed mainly of coarse sandy loam having relatively high proportion of rough weathered debris derived from the Daebo granite geologically. Owing to heavy soil erosion resulted to shallow soil depth and heavy rock exposures, the growing trees in this type of surface soil are very poor in their growth. For woody plant vegetation establishment in this montain area, it is urgent to recover the fertility of soil and the growth of existing trees. For this purpose, in spring and autumn season in 1983∼84 the fertilization experiment was conducted with the 4 principal native species(Pinus densiflora, Pinus rigida, Juniperus rigida, Rhododendron schlippenbachii) growing in this denuded forest land, and the effects of fertilized tree plots were more prominent than the control plot in both height and root-collar diameter growth. Therefore, the accelerating measures of vegetation rehabilitation through conservation of existing trees and recovery of tree growth by forest fertilization practices, besides forest engineering measur es and soil erosion control afforestation measures, could be acceptable as the measures for the recovery of denuded forest land in Mt. Kwanak area.

冠岳樹木園地域內 荒廢山地土壤의 肥沃化를 통한 綠化促進에 關한 硏究

李宗學,麻鎬燮,李憲浩,權台鎬,禹保命 서울大學校 農科大學 1984 서울대농학연구지 Vol.9 No.2

冠岳樹木園地域의 山復斜面은 地質的으로 대보화강암에서 풍화생성된 거친 돌부수러기가 많은 粗砂質壤土로 구성되었으므로 表土層의 土壤流矢이 심하여 土深이 대단히 얕거나 岩盤露出이 심하여 林木生長이 심히 不良한 地帶로서, 山地의 地力恢復 및 現存하는 散生樹木의 生長力恢復을 通한 山地綠化保全이 시급히 요청되고 있다. 이와같은 요청에 부응하여 荒廢地斜面에 自生하고 있는 주요한 4樹種(소나무, 리기다소나무, 노간주나무, 철쭉)에 대하여 山地施肥效果 試驗을 春期와 秋期로 나누어 실시한 결과 樹高 및 直徑生長量에 있어서 無施肥區에 比하여 현저한 施肥效果가 인정되었다. 따라서 冠岳山地帶의 荒廢地를 조속히 復舊綠化하기 위해서는 砂防土木的 工事方法 및 砂方造林的 播植方法이외에도 현존 수목의 保全 및 生長力恢復을 통한 速成綠化方法도 채용되어야 할 것이다. Hillsides in the Kwanak arboretum area were composed mainly of coarse sandy loam having relatively high proportion of rough weathered debris derived from the Daebo granite geologically. Owing to heavy soil erosion resulted to shallow soil depth and heavy rock exposures, the growing trees in this type of surface soil are very poor in their growth. For woody plant vegetation establishment in this montain area, it is urgent to recover the fertility of soil and the growth of existing trees. For this purpose, in spring and autumn season in 1983~84 the fertilization experiment was conducted with the 4 principal native species(Pinus densifltora, Pinus rigida, Juniperus rigida, Rhododendron schlippenbachii) growing in this denuded forest land, and the effects of fertilized tree plots were more prominent than the control plot in both height and root-collar diameter growth. Therefore, the accelerating measures of vegetation rehabilitation through conservation of existing trees and recovery of tree growth by forest fertilization practices, besides forest engineering measur es and soil erosion control afforestation measures, could be acceptable as the measures for the recovery of denuded forest land in Mt. Kwanak area.

Infliximab으로 호전된 장관 증상없이 발생한 구강-안면 크론병

정보용 ( Bo Yong Jung ),이석호 ( Suck Ho Lee ),정승규 ( Seung Kyu Chung ),이창균 ( Chang Kyun Lee1 ),이태훈 ( Tae Hoon Lee ),정일권 ( Il Kwun Chung ),김선주 ( Sun Joo Kim ),조현득 ( Hyun Deuk Cho ) 대한소화기학회 2012 대한소화기학회지 Vol.59 No.6

Crohn`s disease is a chronic inflammatory bowel disease that can involve the whole gastrointestinal tract. The orofacial manifestation of Crohn`s disease, which is rare, can develop irrespective of intestinal involvement. These orofacial lesions are often misdiagnosed as simple oral ulcers. Corticosteroids are the mainstay of therapy for orofacial Crohn`s disease. However, infliximab, the chimeric monoclonal antibody to tumor necrosis factor-α, is now considered as a primary treatment because of the disease`s relatively high rate of steroid resistance. We present a case of deep oral ulcer and periorbital swelling in a 65-year-old woman. She was diagnosed with intestinal Crohn`s disease 7 years ago, which was in remission after treatment with an immunosuppressive agent (azathioprine). The patient was given the diagnosed with orofacial Crohn`s disease and successfully treated with infliximab. (Korean J Gastroenterol 2012;59:437-440)

Production and Characterization of a Thermo-alkalotolerant Cyclodextrin Glucanotransferase from Thermo-alkalophilic Bacillus cereus B-13

Seo, Seung-Bo,Kim, Jae-Ho,Lee, Dae-Hyoung,Lee, Jong-Soo 배재대학교 자연과학연구소 2005 自然科學論文集 Vol.16 No.1

내열성의 cyclomaltodextrin glucanotransferase (CGTase)를 이용하여 열에 안정한 싸이클린 텍스트린 (CD)을 생산하기 위하여 매우 높은 CGTase 활성을 보이는 고열성이며 호알카리성인 B-13 세균을 분리하여 형태적, 생리학적 특성과 16S 리보솜 RNA 서열분석 등을 통하여 Bacillus cereus B-13으로 동정하였다. Bacillus cereus B-13을 2% 가용성 전분, 1% 효모 추출물, 1% Na_(2)CO_(3) 등을 함유하는 SYC 배지 (pH 8.5)에 접종하여 50℃에서 24시간 배양하였을 때 최고의 CGTase 활성(130 U/ml)을 보였다. 또한 부분 정제된 CGTase의 작용 최적 온도와 pH는 각각 65℃, pH 8.5-9.0 이었고 80℃이하와 pH 5.0-10.0에서 안정하였다. 1% 가용성 전분을 부분 정제한 CGTase와 작용 시켰을 때 49%의 CD 수율을 보였다. To produce a thermostable cyclodextrin by using thermotolerant cyclomaltodextrin glucanotransferase(CGTase), a thermophilic and alkalophilic bacterium isolate, designated B-13 showing the highest CGTase activity was isolated from natural sources and identified as Bacillus cereus B-13 based on the morphological and physiological characteristics, and 16S rRNA sequence. The maximal CGTase activity (130 U/ml) was obtained when Bacillus cereus B-13 was cultured in SYC medium containing 2.0% soluble starch, 1.0% yeast extracts, 1% corn steep liquor and 1% Na_(2)CO_(3) (pH 8.5) at 50℃ for 24 h and about 80% of maximal activity was also showed in the culture broth of 60℃ for 18 h . Optimum reaction temperature and pH of the partial purified CGTase for soluble starch were 65℃ and pH 8.5-9.0, respectively. The partial purified CGTase were also stable below 80℃ and pH 5.0-10.0. When 1% soluble starch was digested with the partial purified CGTase, the yield of cyclodextrin was 49%.

면역방사계수법을 이용한 Thyroglobulin 측정시 항 Thyroglobulin 항체의 존재가 미치는 영향

안병철,배진호,정신영,박호용,김정국,하승우,이재태,김보완,이규보 대한내분비학회 2004 Endocrinology and metabolism Vol.19 No.1

연구배경: 혈청 thyroglobulin (Tg)은 옥소전신스캔과 함께 분화갑상선암환자에서 갑상선암 재발에 대한 추적관찰에 매우 예민하고, 중요한 표지자로 임상에서 널리 이용된다. 그러나 많은 수의 분화갑상선암환자는 Tg 항체인 항 Tg 항체를 가지고 있고, 이는 방사면역검사법 (radioimmunoassay) 및 면역방사계수 검사법(immunoradiometric assay)으로 Tg 측정시 영향을 미칠 수 있다. 이에 연자들은 면역방사계수법으로 Tg를 측정할 경우, 항 Tg항체에 의하여 어떤 영향이 생길수 있는지를 알아보고자 하였다. 방법: 이중위치 고상법 (solid phase two-site)법을 이용하는 ELSA-hTg in vivo test (CIS international, Schering, France) 시약을 이용하여 Tg를 측정하였다. Tg과 항 Tg 항체는 검사시약에 포함된 표준용액을 사용하였으며, Tg는 두 가지 농도 (23.5 ng/mL, 62.5 ng/mL)로, 항 thyroglobulin 항체는 세 가지 농도(25U/mL, 50U/mL, 100U/mL)로 이용하였다. Tg가 높게 나타나는 환자의 혈청에 항 Tg 항체가 높게 나타나는 환자의 혈청을 혼합하여 동일한 방법으로 Tg 검사를 시행하였다. 통계학적 분석은 ANOVA와 Scheffe test 및 Quadratic regression modeling을 시행하였다. 결과: 면역방사계수법을 이용한 Tg 측정시 항 thyroglobulin 항체가 존재하는 경우 그 값이 낮게 측정되었다. Tg 농도가 23.5 ng/mL인 표준용액이 항 Tg 항체의 농도가 0, 25, 50 및 100U/mL 경우, 각각 24.5±1.1, 11.8±0.4, 7.7±0.1 및 4.5±0.4ng/mL로 측정되었으며, Tg 농도가 62.5 ng/mL인 표준용액은 각각 65.9±5.7, 36.3±2.2, 23.7±0.7, 및 14.0±1.0 ng/mL로 측정되었다(ANOVA test, p=0.000). 항 Tg 항체에 의한 Tg 측정값의 저하 정도는 항 Tg 항체의 농도에 비례하는 것으로 나타났다 (Quadratic model regression, SigT=0.000). 결론: 분화갑상선암환자에서 항 Tg 항체의 존재는 면역방사계수법을 이용한 혈청 Tg 측정으로 갑상선암 재발을 파악하는데 방해하는 인자로 작용될 수 있으며, Tg 측정시 항 Tg 항체의 측정이 꼭 필요하며, 항 Tg 항체를 가진 분화갑상선암환자에서 Tg 수치를 해석할 경우 세심한 주의가 요구된다. Background: Serum thyroglobulin (Tg) is a valuable and sensitive tool needed in the follow-up of patients with differentiated thyroid cancer (DTC), but antithyroglobulin antibody (Anti-Tg), common in patients with DTC, can interfere with the assay for Tg. In this study, we evaluated the influence of Anti-Tg on the measurement of Tg using the immunoradiometric assay (IRMA). Methods: In using ELSA-hTg in vivo test (CIS international, Schering, France), a solid phase two-site IRMA was used to measure Tg (23.5 ng/mL, 62.5 ng/mL) under the absence or presence of three concentrations of Anti-Tg (25U/mL, 50U/mL, 100U/mL). We also performed Tg measurement using patients serum that was mixed with patients serum containing high Anti-Tg. ANOVA and Scheffe tests were performed to evaluate the effect of Anti-Tg on Tg IRMA, and an inverse regression was made to calculate the level of Tg from measured Tg and used Anti-Tg levels and also to assess the degree of effect of anti-Tg on Tg IRMA. Results: In measuring Tg using the standard solution, the presence of Anti-Tg resulted in a falsely suppressed Tg value. The IRMAs for 23.5ng/mL of the standard Tg solution resulted in 24.5±1.1 ng/mL under no Anti-Tg, 11.8±0.4 ng/mL under 25U/mL of Anti-Tg, 7.7±0.1 ng/mL under 50U/mL of Anti-Tg, and 4.5±0.4 ng/mL under 100U/mL of Anti-Tg. IRMAs 62.5 ng/mL of the standard Tg solution resulted in 65.9±5.7 ng/mL under no Anti-Tg, 36.3±2.2 ng/mL under 25U/mL of Anti-Tg, 23.7±0.7 ng/mL under 50U/mL of Anti-Tg, and 14.0±1.0 ng/mL under 100U/mL of Anti-Tg. (ANOVA test, p=0.000). The degree of suppression of the measured Tg value was positively correlated with the Anti-Tg level (Quadratic model regression, Sig T=0.000). The presence of Anti-Tg also resulted in a falsely suppressed Tg value for the Tg measurement using patient's serum. 2004). Conclusion: The presence of Anti-Tg could consist of the use of Tg as a tumor, therefore Anti-Tg should be measured in all patients diagnosed with DTC. The interpretation of the Tg level must be performed with extreme caution in patients with Anti-Tg (J Kor Soc Endocrinol 19:42∼47, 2004)

White luminescence of Ho3+/Tm3+/Yb3+-codoped CaWO4 synthesized via citrate complex route assisted by microwave irradiation

CHO, Hyun,HWANG, Seok Min,LEE, Jae Bin,KA, Dong Hyun,KIM, Tae Wan,LEE, Bo Seul,LEE, Ji Young,LEE, Jung-Il,RYU, Jeong Ho Elsevier 2014 Transactions of Nonferrous Metals Society of China Vol.24 No.suppl1

장천공이 발생한 비장티푸스성 D군 살모넬라 장열 1례

이진호,허진국,나종천,김의석,이혜경,신보문,김석호,고행일 대한감염학회 2004 감염과 화학요법 Vol.36 No.4

비장티푸스 살모넬라증에 의한 장열과 장천공은 매우 드물다 저자들은 방어기전의 손상이 없는 건강한 성인에서 비장티푸스성 D군 살모넬라 장열에 동반된 장천공이 발생한 예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. The case of enteric fever and bowel perforation caused by nontyphoidal Salmonella spp. is extremely rare. We report a case of a 28-year-old man who suffered from enteric fever with complicated a small bowel perforation, which is a known complication of S. typhi and S. paratyphi infections. The culprit later proved to be nontyphoidal group D Salmonella spp. in our case.

형광정 負荷電流의 高調波含有狀況

李輔鎬 大田工業高等專門學校 1968 論文集 Vol.3 No.-

In 3φ 4wire system, the higher harmonics in the current of Television, transformer and fluorescence lamp load are very important matters. In this study, I find the current wave form of the fluorescence lamp lead by the oscilloscope and calculate the higher harmonics of it by fourier series.

Weissenberg 寫眞 技法에 의한 酸化마그네슘(MgO)의 結晶構造

이진호,류보영,조소라,김문집,추금홍,서일환,임성수 순천향대학교 1993 논문집 Vol.16 No.3

The structure of MgO crystal is faced centered cubic(FCC) with cell parameters of a=b=c=4.21Å, α=β=γ=90。. The ionic bond length between Mg and O atoms is 2.1Å. This crystal belongs to m3m point group and to Fm3m space group.

응급의학과에서의 인공호흡기 처치

이삼범,도호석,도병수,이창현,심민철,권굉보 대한응급의학회 1995 대한응급의학회지 Vol.6 No.2

Study Objectives : To investigate and resolve the problems related with ventilator management in ED(emergency department). At present the ventilator is essential equipment of ED on university hospital and emergency center in Korea. Design : Retrospective consecutive case series. Setting : University teaching hospital Type of participants : All patients admitted and recieved ventilator management in ED of yeungnam university hospital from Jan. 1994 to jul. 1995. Methods and interventions : Charts of all patients were reviewed to determine the frequency, the types and causes of respiratory failure, the death rate, the mean duration of admission, the complications, and CPR(cardiopulmonary resuscitation) related with ventilator management in ED. We also identified the problems related with ventilator management by ED physicians and nurses through the answers to seven questions that suggested by us about ventilator management in ED. Measurements and main result : There were 34,751 admissions through ED during the study period. Of these 160 patients managed with ventilator in ED. The frequency of ventilator management in ED is increased at 1995(0.73%) that compared with 1994(0.32%). Non-trauma(113 cases) and hypoxic respiratory failure(83 cases) patients are more common than trauma(37 cases) and ventilatory failure Total CPR rate related with ventilator management are 25.3%. The mean duration of admission are 12.56±20.28 days, and the death rates are 45.3%. The incidence of complications occurred during ventilator management in ED are 37 cases. About seven questions suggested by us to 30 ED staffs(ED physician, nurses and paramedics), most frequent answer is the difficulty of keeping ventilator in ED because other department rent ventilator from ED and lost a part of ventilator. Conclusion : As the use of ventilator in ED is increased the emergency physician should be well trained for the indications, complications, setting mode and general problems of machine occurred during ventilator management in ED patients.