본 연구의 목적은 역사적인 관점에서 유럽과 한국에서 사용된 ‘독도’ 명칭과 새 한글 로마자 표기법에 따른 독도의 표기 문제를 살펴봄과 동시에 독도에 대한 한국의 영유권의 정당성을 증명하는데 있다. ‘독도’가 쓰이기 전까지 이 섬은 ‘우산도’, ‘석도’, ‘삼봉도’, ‘가지도’ 등 다양하게 쓰여졌다. 독도는 1849년 ‘리앙쿠르’ 포경선에 의해 최초로 발견되었고, 그로 인해 ‘리앙쿠르암’이라 불리게 되었다. 한국에서는 20세기에 들어서 역사적, 지리적으로 증명하기 위해 ‘독도’라 쓰여지게 된다. 본고에서는 ‘독도’의 남·북한 로마자 표기법을 적용하여 적절한 표기법에 대해 살펴보았다.

정보통신의 발전에 따라 야기되는 기본권상의 문제점은 한편으로는 헌법상 통신의 자유의 주요한 내용이 되면서 동시에 사생활의 비밀의 자유 및 개인정보보호와 함께 표현의 자유 문제까지 아우르는 것이다. 통신의 자유 보호가 새로운 환경에서 적극적으로 이루어지고 있는지 관련 법체계를 검토해 보아야 하는데 통신비밀보호와 연관된 가장 중요한 법률은 통신비밀보호법이다. 한편으로는 정보화시대의 변화된 상황에 맞게 통신의 자유를 비롯한 기본권을 효과적으로 보호하면서 다른 한편으로는 첨단 범죄에 효율적으로 대처한다는 현실적 필요도 소홀히 하지 않는 법적 장치를 마련할 필요가 있다. 본 논문에서는 이러한 내용을 포함하여 통신비밀보호법상 논의되는 문제점 몇 가지에 대하여 감청을 중심으로 검토한다.

Selenium (Se) obtained from dietary sources is an essential micronutrient for normal body function and it functions as an essential constituent of selenoproteins. We investigated the influence of Se on the formation of colonic aberrant crpyt foci (ACF) and tumor formation induced by azoxymethane (AOM) and dextran sodium sulfate (DSS) in male ICR mice. Five-week old ICR mice were acclimated for one week and fed on the low iron diet (LFe, 4.5 ppm) and different Se diet [Lse (0.02 ppm), Normal Se (0.1 ppm), HSe (0.5 ppm)] for 12 weeks. Animals received intraperitoneal injections of AOM (10㎎/㎏ B.W. in saline weekly for 3 weeks), followed by 2% DSS (molecular weight 36,000～50,000) in the drinking water for a week. There were five experimental groups, including a normal control group, AOM/DSS, LFe+AOM/DSS, LFe+AOM/DSS+LSe, LFe+AOM/DSS+HSe. After sacrifice of animals, the total numbers of AC and ACF were measured in the colonic mucosa. The number of mice bearing tumors was expressed as tumor incidence rate. The iron and selenium liver concentration was measured using ICP-AES. Glutathione peroxidase (GPx) activity was determined using a GPx assay kit in the liver and colon. TUNEL and proliferating cell nuclear antigen (PCNA) staining were performed to examine the cell apoptosis and cell proliferation. In addition, immunohistochemistry of β-catenin was also performed on the mucous membrane tissue of colon. In AOM/DSS-induced colon carcinogenesis animal model, LFe diet decreased the number of 2.95±2.5 ACF/cm2 to 1.85±1.1 ACF/cm2 but it increased the total number of 5.06±4.2 AC/cm2 to 6.19±4.8 AC/cm2 compared with normal iron diet. In the iron-deficient mice, selenium did not affect the either the number of ACF or AC. The tumor incidence rate was higher in LFe diet groups than in normal iron diet group and high selenium diet weakly reduced the tumor incidence. Low selenium diet decreased the activity of GPx in the liver and colon. Apoptotic positive cells were decreased in the low selenium diet group. In addition, on the β-catenin staining, positive cells were increased in the low selenium diet group while they were decreased in the high selenium diet group. These findings indicate that the dietary levels of selenium was not highly enough to exhibit a significant protection against colon carcinogenesis in the iron-deficient mice. However, our results also indicate that dietary selenium might exert a protecting effect against colon cancer by increasing GPx activity and apoptosis and by inhibiting cell proliferation and β-catenin over-expression.

A fiber fraction (Aloe cellulose), the by-product obtained from Aloe vera gel processing was freeze dried and investigated for in vitro glucose/ bile acid retarding effects of powdered sample (100 mesh) comparing with commercial α-cellulose as a reference sample. We also examined the effectiveness of physiological functionality such as the antiobesity and anti-constipation on Sprague-Dawley (SD) rat. The Aloe cellulose powders during in vitro dialysis experiment for 2 hours exhibited the glucose and bile acid retarding index of 20.32-35.2% and 53.13-28.30%, respectively. Especially, freeze dried aloe cellulose showed the 2.5 and 1.2-6 times higher effect on in vitro glucose and bile acid retardation than those of α-cellulose. These relatively good retarding effects on glucose and bile acid diffusion suggest a potential of preventing from diabetes and arteriosclerosis of some extent. Also, the results from animal experiments on SD rats fed a high-fat diet for 4 weeks suggested that Aloe cellulose might be used as a novel dietary fiber showing an effective anti-obesity and anti-constipation effect.

상용원자로에서 발생하는 산화물 사용후핵연료의 부피감용과 재활용을 위하여 산화물을 금속으로 환원시 키는 공정에 대한 연구가 수행되어 왔다. 다양한 환원법 중에서, 한국원자력연구원은 LiCl-Li2O 용융염을 반 응매질로 사용하는 전해환원공정을 현재 개발 중이다. 파이로 공정의 전단부에 해당하는 전해환원 공정은 PWR 산화물 연료 주기를 소듐냉각 고속로의 금속연료 주기에 연결시켜 준다. 이 논문은 금속전환 공정을 개 발/개선하고, 용량 증대를 수행한 한국원자력연구원의 노력을 요약한다.