아조벤젠 분자(Disperse Red 1)를 포함한 측쇄형 고분자에서 광유도 복굴절의 실시간적 조사

신희득,주원제,오차환,송석호,김필수,한양규 한양대학교 자연과학연구소 2001 自然科學論文集 Vol.20 No.-

아조벤젠 그룹을 포함한 측쇄형 고분자 필름(PDR1)에서 광 유도된 이방성을 실시간적으로 조사하였다. 수평, 수직한 흡수율의 변화를 광 유도된 복굴절의 기록, 감쇠, 소거, 완화 과정에 따라 측정하여, 매질 내의 아조벤젠 분자의 정렬상태와 복굴절과의 관계를 광 이성화과정으로 설명하였다. 또한 기록빔의 세기를 따른 수직, 수평한 흡수율의 변화와 유도된 복굴절의 관계를 조사하였다. The photo-induced anisotropy for a polymeric film(PDR1) containing azobenzene group as side-chain was investigated dynamically. The change of absrobances with parallel and perpendicular components was measured in recording, decaying, erasing and relaxation processes of photo-induced birefringence, so the relation between the alignment of azobenzene groups and the birefringence was well explained according to the photo-isomerization. Also, the dependence of the photo-induced birefringence on intensity of recording beam was investigated with changes of both absorbance and birefringence.

새로운 유사 원자층 증착 방법에 의한 산화막의 형성 및 터널링 자기 접합에의 응용

한신희,정원철,이장식,김병동,주승기 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.1

The tunneling barrier is crucial to the overall performance in magnetic tunnel junction. We have suggested a new formation method for the tunnel barrier, which has utilized pseudo atomic layer deposition with sputtering (PALDS). As is well known, all metallic thin films oxidize more or less under atmospheric conditions. With using this property of metallic thin films, we have prepared tunnel barrier by sputtering metallic thin film and exposing it to the oxygen ambience. From transmission electron microscopy (TEM) observation, the formed tunnel barrier has been confirmed to have clear and good interface between magnetic layers and tunnel barrier. From atomic force microscopy (AFM) observation, it has been also confirmed to have low surface roughness. The TMR MRAM cell manufactured using PALDS method has been shown to exhibit typical tunnel resistance of 86 KΩ·μm^2 and TMR ratio of about 40%. The 40% of MR is quite large. It is considered that this value is geometrically enhanced magnetoresistance due to the low junction resistance of MTJ.

두경부 암환자의 항암화학요법에 따른 삶의 질 변화

신혜숙,박혜자,박명희,연기순,김훈교,문한림,송혜향 가톨릭대학교 가톨릭대학교 간호대학 호스피스 교육연구소 1999 호스피스논집 Vol.4 No.-

The purpose of this study was to assess the changes in quality of life wish elapse of chemotherapy in head and neck cancer patients. This study was a longitudinal descriptive design. The subjects were 9 patients who had stage III and stage IV head and neck cancer and received neoadjuvant cisplatin and 5-fluorouracil chemotherapy. Linear Analogue Self Assessment Scale (LASA) of the QOL which it includes eleven items(seven physical items appetite, nausea/vomiting, physical well-being, vigor activity, energy, sleepiness, fatigue and four mental items anger, anxiety, depression & vital power) were used to assess the quality of life eleven times(once in the prechemotherapy period and from the 1st day to 10th day postchemotherapy). The means of scores at each time were analyzed by repealed measures of ANOVA and Bonferroni multiple comparison method. The results are as follows : 1. The degree of appetites decreased significantly on the period between third and sixth day compared with that of appetites on the prechemotherapy day (p<0.001). 2. The degree of physical well-being decreased significantly on the period between first and fifth day compared with that of physical well-being on the prechemotherapy day (p<0.001). 3. The degree of nausea/vomiting decreased significantly on the period between first and fourth day compared with that of appetites on the prechemotherapy day (p<0.001). 4. The degree of anger decreased significantly on the second, fourth, eighth and ninth day after chemotherapy compared with that of anger on the prechemotherapy day(p<0.001). 5. The degree of fatigue decreased significantly on the fourth day compared with that of fatigue on the prechemotherapy day(p<0.001). 6. The increment of nausea/vomiting and poor appetite started on the 2.89th day and 3.67th day after chemotherapy, respectively. 7. The increment of sleepiness started on the 2.56th day after chemotherapy. 8. The increment of depression and anxiety started on the 2.33th day and 3.33th day after chemotherapy, respectively. 9. The lowest degrees of nausea/vomiting and poor appetite were 37.00±17.9 % and 28.64±14.94 % after chemotherapy compared with those of nausea/vomiting and poor appetite on the prechemotherapy day, respectively. 10. The lowest degrees of anger and vigor activity were 48.12±28.3 % and 39.83±24.9 % after chemotherapy compared with those of anger and vigor activity on the prechemotherapy day, respectively. 11. The recovery rates of eight items of quality of life (appetite, vigor activity, energy, fatigue, anger, anxiety, depression & vital power) were shown to reach a peak on the tenth day after chemotherapy and be reached to almost 84 % compared with those of quality of life on the prechemotherapy day. 12. The recovery rates of physical well-being and sleepiness were shown to reach to 67.75 % and 95.68 % on the 10th day after chemotherapy compared with those of physical well-belong and sleepiness on the prechemotherapy day. 13. The recovery rates of seven physical items were faster than those of four mental items on the 10th day after chemotherapy. In conclusion, it is suggested that nursing care strategies to improve the quality of life in patients with chemotherapy would be established both physically and mentally, and be extended at least ten days when patients stayed their home after chemotherapy.

삼차신경통으로 발현된 소뇌�u각 지방종 : 증례보고 A Case Report

신상훈,정희원,지제근,한대희 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.11

Intracranial lipomas are rare lesions that constitute 0. 1% of cerebral tumors. Moreover, the cerebellopontine(CP) angle is one of the most unusual sites of such hamartomas with only 30 reported cases in the literature. We report a case of CP angle lipoma presenting with trigeminal neuralgia on a 39-year-old male. Magnetic resonance imaging revealed a high signal mass at right CP angle on T_(1)-weighted images before contrast administration. This mass appears hypointense on T_(2)-weighted images. We operated through right suboccipital craniectomy and excised the mass subtotally. Total removal may be obtained with significant cranial nerve deficits. Therefore, the treatment of CP angle lipomas should be conservative. Histopathologic studies demonstrated lipoma.

保健關係機關 및 團體와 社會敎育機關의 保健敎育實態에 關한 調査硏究

韓喜晶,李時伯,申碩旴,趙恒奭,鄭惠瓊 韓國保健敎育學會 1988 보건교육건강증진학회지 Vol.5 No.1

볏짚의 가성소다 處理水準이 재래산양의 볏짚섭취량 飮水量 및 腸內 通過速度에 미치는 影響

辛炯泰,裵熙東,孫鎭漢 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.1

These experiments(I, II) were conducted to determine the nutritive value of NaOH-treated rice straw by voluntary intake, water consumption, rate of passage and retention time in goat's gastrointestinal tracts. The results which were obtained with these experiments (I, II) as follows; 1. Volutary intake of 0%, 3% and 6% NaOH-treated rice straw by goats was 1,012ml, 1,427ml and 1,612 ml, respectively. 2. Water consumption of 0%, 3% and 6% NaOH-treated rice straw by goats was 1,012ml, 1,421ml and 1,612ml, respectively. 3. The first excretion time of stained rice straw particles in goat's feces was 0% NaOH, 20 hours: 3% NaOH, 18 hours and 6% NaOH, 16 hours, respectively. 4. Total mean retention time (R value) of 0%, 3% and 6% NaOH-treated rice straw by goats was 72.0 hours, 61.2 hour, and 56.8 hours, respectively. 5. The optimal level of NaOH for increasing the nutritive value of rice straw was 3% in goat's rations.

서울시 교직원의 고혈압 실태파악과 그 요인에 관한 연구

신선미,김종희,한규종,이희우 韓國學校保健學會 2004 韓國學校保健學會誌 Vol.17 No.1

Purpose : To describe epidemiological characteristics and related factors in school personnel with hypertension. Method : 5,384 school personnel (2,638 males and 2,746 females) received physical examination at the Seoul School Health Center in 2002. blood pressure(BP) was classified by JNC 7th report. Normal BP is systolic BP <120 and diastolic BP<80, prehypertension BP is 120-139 or 80-89mmHg, stage 1 hypertension BP is 140-159 or 90-99, and stage 2 hypertension >=160 or >=l00 mmHg. each group was evaluated by gender. We used multiple regression and logistic regression. Results : Normotension was 20.13% in d e s and 48.65% in female, prehypertension 43.4% in males and 3.06% in females, stage 1 hypertension 26.38% in males and 10.99% in females, stage2 hypertension 9.59% in males and 3.2% in females. the older age group had higher distribution of stage 1 hypertension and stage 2 hypertension. The means and abnormal rates of BMI, blood sugar, total cholesterol, GOT, GPT, and GTP was higher when their blood pressure was higher. However, an alcohol habit among lifestyle factors had an inverse effect. Higher Bp was correlated to a &her BMI, FBS, and cholesterol-like dose response. In stage 1 hypertension, the related factors of hypertension for males were BMI, amount of cigarettes smoked, exercise, blood sugar, total cholesterol, and GTP. In stage 1 hypertension, age, BMI, exercise, blood sugar, total cholesterol were related factors in female. In stage 2 hypertension, age and smoking were related factors in male, and age, BMI, and cholesterol in female. Conclusions : It is possible to intervene in all related factors of hypertension except age through life-style modification and appropriate medical management. Active health promotion is needed in School personnel.

감염근관에서 분리한 Porphyromonas endodontalis와 Prevotella intermedia의 제한효소분석법에 의한 유전자 이질성에 관한 연구

신주희,김한옥,윤수한 大韓齒科保存學會 1997 Restorative Dentistry & Endodontics Vol.22 No.1

蛋白質 水準 및 供給源이 泌乳初期搾乳牛의 産乳量에 미치는 影響

辛炯泰,韓泳根,金秉泰,裵熙東,孫重天 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.2

Eighteen Holstein cows capable of producing at least 23㎏ of milk per day were assigned randomly in equal numbers and fed one of three isocaloric total rations of 15.8 (soybean meal), 15.8 (urea), or 14.1% (urea) crude protein in dry basis. All cows were fed their assigned ration continuously for 63 days beginning on the 20 day postpartum. This experiment was designed to determine the influence of concentration and source of dietary protein on milk production(kg) and milk fat(%) during early lactation. The results which were obtained in this experiment as follows: 1. Milk yields (4.0% fat corrected milk, FCM) of cows for 42 day trial in early lactation were 23.80, 20.32, 18.44kg for the respective treatment. In this experiment the higher protein concentration (15.8% vs 14.1%) increased milk production, and source of protein influenced milk production. 2. Milk fat of 3.63, 3.52, and 3.39% showed that dietary protein concentration and source influenced milk fat in early lactating cows. 3. Income above feed cost for 42 day trial was greatest for the group fed the 15.8% crude protein from soybean meal (5,406 won/cow/day) and lowest for the group fed the 14.1% crude protein from urea (3,919.5 won/cow/day). income above feed cost for 15.8% crude protein from urea was 4,154.4 won /cow/day.

SOI 기판에 형성된 MOSFET의 특성 연구

한명석,이찬희,홍신남 한국항공대학교 1995 論文集 Vol.33 No.-

Thin film SOI 소자는 short channel effect 감소, subthreshold slop의 개선, 높은 이동도, 낮은 기생 캐패시터, latch-up현상이 없는 등의 여러가지 장점들을 가지고 있다. 이것이 ULSI에 대해 실현 가능한 기술이 된 것은 최근에 발달된 양질의 thin film SOI 기관 제작기술에 기인한 것이다. 그렇지만 current kink와 early breakdown 같은 floating body effect와 source/drain 저항의 증가라는 두가지의 큰 문제점을 가지고 있다. 본 연구에서는 concave 구조를 가지는 SOI MOSFET 형태를 통해 문제를 풀어보고자 하였다. 제안된 concave SOI 구조는 항복전압을 높이고 드레인 영역에서의 전계를 감소시켜 kink 현상의 원인이 되는 impact ionization이 발생할 확률을 줄이는 결과를 얻을 수 있었다. Thin-film SOR(Silicon-On-Insulator) devices offer unique advantages such as reduction in short channel effects, improvement of subthreshold slope, higher mobility, low parasitic capacitance, latch-up free natere, and so on. This is available technology for ULSI due to recent advances in high quality thin film SOI process technology. However, Thin film SOI devices have several problems-floating body effects, current kink, early breakdown effects, increase in parasitic source/drain resistances. In this paper, a SOI MOSFET with concave structure is analyzed for a sub-half micron regime to solve the above problems. Proposed concave SOI structure showed the increased breakdown voltage and the decreased impact ionization due to the lower electric field near the drain region.