• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.583-584
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• 2020

본 논문은 신재생에너지와 전기자동차의 보급이 활발한 제주시에서 태양광 발전량과 기후변화 기록들을 활용할 수 있는 데이터처리 프레임워크를 구축하고 인공신경망으로 태양광 발전량 예측모델을 구축한다. 이 인공신경망 모델은 일조시간, 일사량, 전운량 등을 입력 노드로 설정하고 일별 생산량을 출력 노드로 설정한다. 가장 상관관계가 높은 발전기 3개에서 학습 패턴을 추출하였으며, 모든 대상 발전기에 대해 최대 평균 오류율은 평균 36.7 %를 보이고 있다.

• Proceedings of the Korea Institute of Convergence Signal Processing
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• 2005.11a
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• pp.256-259
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• 2005

운세정보 서비스는 전화로 일반 사용자들이 많이 이용하고 있지만 사용자들이 이용하기에 너무 비싸고 서비스 제공자가 항상 대기해야한다는 단점이 있다. 이점을 보완하는 웹서비스가 있지만 언제 어디서나 이 서비스를 활용할 수는 없다. 그래서 VoiceXML을 이용한 운세정보서비스를 구현하였다. VoiceXML은 음성을 웹 페이지처럼 작성할 수 있는 언어이고 웹과도 호환성이 좋아 기존 웹 서비스의 기능을 모두 지원하면서 독립적으로 음성 인터페이스를 제공해 전화와 웹 서비스의 장점을 모두 취할 수 있다. 본 연구에서는 웹 서비스중 오늘의 운세, 궁합, 바이오리듬, 타로카드점을 VoiceXML을 이용하여 구현했다. 12인의 피 실험자가 각 메뉴를 모두 2번씩 실험한 결과 95%이상의 동작 성공률을 보였다. 그리고 실험자에 대한 설문조사 결과 기존 웹 서비스에 비해 범용성과 경제성 면에서 장점을 갖는다는 결과가 나왔다. 앞으로 입력부분에 대화형 서비스 메뉴를 보완하여 더욱 사용이 편리한 서비스로 개선할 계획이다.

• Proceedings of the Korean Society of Developmental Biology Conference
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• 2003.10a
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• pp.139-139
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• 2003

최근, 한우의 수정란 체외이식두수가 급격히 늘어나고 있으나, 모축의 등록번호를 대부분 확인 할 수 없으며, 확인이 가능할지라도 개체별 수정란의 생산이 거의 이루어지지 않고 있다. 본 실험에서는 모축의 등록번호가 확인된 개체의 난소로부터 채취한 난포란만을 체외성숙, 수정, 배양하여 배 발생율을 조사하고, 동결성적을 조사하였다. 도축된 한우의 난소를 개체별로 채취하여 2$0^{\circ}C$생리식염수에 넣어 3시간 이내에 실험실로 운반하고, 난포란을 채취하였다 개체별로 채취한 난포란은 9~47개/난소였고, 평균 14.3개/난소였다. 개체별 난포란은 IVMD 101 (일본, 펩티트연구소)에서 22물24시간 동안 체외 성숙시킨 후, IVF 100(일본, 펩티트연구소)으로 2회 세정한 후, 각각의 배양액 50${\mu}\ell$ 소적에 5개씩 5~6시간 수정시켰다. 수정란을 저 산소 배지 IVD 101 (일본, 펩티트연구소)로 7~9일간 배양하여 배 발생율을 조사하고 동결하였다. 평균 수정율은 81%, 배반포의 발생율은 35% 였으며, 동결 가능한 수정란은 평균 4개/두 정도 얻을 수 있었다. 이상의 결과로 한우의 개체가 확인된 난소로부터 수정란생산이 가능하고, 육질등급이 우수한 한우의 수정란생산이 가능해졌으며, 앞으로 고 능력 젖소의 난소에서도 고능력 수정란의 생산이 가능할 것으로 사료된다.

• Proceedings of the Korean Vacuum Society Conference
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• 1999.07a
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• pp.34-34
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• 1999

토카막(Tokamak)에서는 플라즈마(plasma)로 불순불(impurity)의 유입을 방지하기 위해 고진공을 유지해야 하며 이를 위해 가열탈리(backing), 방전세정(discharge codanning) 등 wall conditioning이 기본적으로 요구된다. KT-1 토카막은 실험실 이전에 따른 해체로 인해 진공용기(vacuum vessel) 가 대기압 하에 수개월 동안 노출되어 있었기 때문에 재조립 후 가열 탈 리가 필수적이나 진공용기의 외부에 saddle loop coil을 비롯해 Rogowski, diamagnetic coil, poloidal field coil 등 많은 magnetic pick up coil 들이 설치되어 있어 열선 등 일반적인 방법으로 가열 탈 리가 어려운 상황이다. 따라서 KT-1 토카막에서는 전자석 코일에 상전원을 부가하였을 때 진공용기에 발생하는 유도가열 (inductive heatin)을 이용해 가열 탈리를 시도하였다. 유도 가열 탈리(inductive backing)는 토로이달 자장 코일(toroidal field coil)과 가열 저장 모일(ohmic heating coil)을 각각 이용하여 코일의 온도가 6$0^{\circ}C$ 이하가 유지되는 코일 전류 범위내에서 수행하였으며 먼저 이 둥 경우에 있어서 진공용기의 온도분포를 비교하엿다. 그리고 가열 탈리 기간 및 그 전, 후의 진공압력과 잔류기체 분압을 측정, 분석하였다. 유도가열에 의한 방법으로 KT-1 토카막에서 얻은 탈리온도는 12$0^{\circ}C$정도로 비교적 낮았으나 탈리 시간을 연장하여 탈리효과를 어느 정도 보상할 수 있으며 일반적인 가열 탈리가 여려운 경우 유도 가열 탈 리가 채택될 수 있는 또 하나의 방법이라 볼 수 있다.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.39 no.1
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• pp.25-30
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• 2013

The use of protein-crosslinking enzyme, transglutaminase, as a biocatalyst in the processing of hair offers a variety of exciting and realistic possibilities which include improving the rigidity of hair fibers. Among the transglutaminases from many different living organisms, the microbial enzyme prepared from Streptomyces mobaraensis, significantly increased the tensile strength of hair by 15.64% compared to a control when it was applied to damaged hair. This indicates that transglutaminase can restore the negative effects of washing hair with shampoo. Also transglutaminase improved the characteristics of hair surface, which could be useful for increase of luster and reduction of friction force of hair surfaces.

• Korean journal of food and cookery science
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• v.18 no.6
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• pp.704-715
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• 2002

This study intended to compare dietary and snack habits of primary students in the schools providing and non-providing lunch to clarify the correlation between those conditions and the occurrence of dental caries. Furthermore, this study also focused on evaluating educational effects by providing children with nutritional education program. 1. As a result of dietary habit analysis, it was found that children from the school providing lunch were better in terms of breakfast regularity, eating speed. optimum amount of intake, and meal time regularity than those from the school non-providing lunch. In particular, it was noted that children from the school providing lunch took a little more meat, fish, seaweed and milk or dairy products than those from school non-providing lunch. Thus, it could be assumed hat children provided with lunch have more reasonable dietary habit than those without lunch program. In general, it was found that there was a slight positive change in children's dietary habit after nutritional instruction than before, suggesting that the nutritional education had effects on improving their dietary habit. 2. It was found that primary students often took snacks causing dental caries such as caramel, chocolate, sweets and biscuits, and children from the school providing lunch were more willing to reduce those snacks upon recognizing the causes of dental caries than those from the school non-providing lunch. For the children who chewed gum with physical cleansing effects, it was shown that the highest frequency wat twice or three times a week. Moreover, the ratio of children who took snacks following dinner which might affect their dental caries and the ratio of children who selected snacks because of TV commercial were both reduced after nutritional education. Also the consumption of detergent foods like vegetable, fruit, protein. seaweed. milk or dietary products after nutritional education was increased. 3. It was found that children from the school providing lunch took more often all food groups except for food group IV affecting dental caries than those from the school non-providing lunch. The average number of consuming foods which cause dental caries was 5.04 times per person a day, and most of those were rather taken by liquid than solid food. The average eating times of rinsing foods which kill the bacteria on the surface of teeth and prevent from dental caries, was 9.33 for a person a day, which was a little higher than recommended time. Exposed time for dental caries for a person a day was 100.9 min, of which liquid dental caries was 56.2 min and solid dental caries was 44.6 min, suggesting that liquid food had a high potential to cause dental caries.

• Korean Journal of Environmental Biology
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• v.24 no.2 s.62
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• pp.102-111
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• 2006

The increased occurrence of hyperglycemia and oxidative stress in streptozotocin (STZ) induced type I diabetes has been implicated in the etiology and pathology of disease complication. STZ has known to be genotoxic in a variety of assays including tests for microbial mutagenesis and unscheduled DNA synthesis in rat kidney. Diabetes mellitus (DM) is a pathologic condition, resulting in severe metabolic imbalances and non-physiologic changes in many tissues. We examined the effect of gamma radiation and KWNP on preventing the development of insulin dependent diabetes mellitus using streptozotocin-induced Fisher 344 diabetic rats. The hematological values (red blood cell and white blood cell), serum biochemical constituents-alkaline phosphatase (ALP), total cholesterol, triglycerides and insulin-were checked and the organs (testis, spleen and kidney) were weighed. The gonad indices of the STZ treated groups were much lower than the value of the control group. But the gonad indices of the KWNP treated groups were higher than those of the treated groups. The ratio of the weight of kidney to the body weight of the STZ treated groups was higher than that of the control group. The value of the diabetic group treated with KWNP after irradiation (F group) was lower than the other STZ treated groups. The white blood cell and ALP values of the F group were lower than the other STZ groups, as well. The cholesterol and triglyceride values of all the KWNP treated groups were significantly lower than the other groups. A significant increase (about 10 times) of insulin was detected in the F group. The results of hematological assay showed the distinctive damage in the irradiated and STZ treated groups. The quantity of apoptotic cells in seminiferous tubule of testis confirmed a serious damage as assessed in the STZ treated groups. These experimental results have revealed that treatment of the products of KWNP after irradiation has the antidiabetic effect in the STZ-induced diabetic rats. But the F group showed higher recuperative power. These experimental results have revealed that treatment of the gamma irradiation and KWNP have the recovering effect in the STZ-induced diabetic rats.

• Korean Journal of Animal Reproduction
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• v.25 no.3
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• pp.207-217
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• 2001

Diagnosis and treatment of major reproductive failures were carried out for 836 dairy cows of 12 farms in Kimje area from May 1999 to May 2000. Reproductive failures were classified into four categories: uterine diseases, ovarian diseases, combination of uterine and ovarian diseases, and anestrus with corpus luteum (CL), based on the diagnosis by both rectal palpation and ultrasonography (SA 600, Medison, 5.OMHz transducer). 1. Of 102 cows examined, 15 cows were diagnosed as pregnant. Cows with real reproductive failures were therefore 87 cows and the rate of reproductive failures far all the cows of 12 farms was 10.4% (87/836). 2. Of 57 cows with reproductive failures, the cows with uterine diseases were 33 heads (37.9%), with ovarian diseases: 30 heads (34.5%), with combination form: 16 heads (18.4%), and with anestrus with CL: 8 heads (9.2%). 3. Of 87 cows with reproductive failures, 7 cows were slaughtered and 80 cows were treated by hormone or douche. The cows expressed estrus were 74 cows (92.5%, 74/80 heads) and 56 cows were pregnant (70.0%, 56/80 heads) following treatment. 4. The reproductive failures tended to be increased as the period proceeded from 30 days (2.3%, 2/87 heads) to over 120 days (56.3%, 49/87 heads) after parturition. 5. Associated other diseases to reproductive failures were foot diseases(5 cows), joint diseases (5 heads), urovagina (6 heads), and rectovaginal fistula (2 cows) and the rate of occurrence of associated diseases was 20.7% (18/87 heads). 6. No reproductive record was used in 7 farms of 12 farms and 5 farms had no play ground or not used for the cows. These results indicated that diagnosis fur reproductive failures by rectal palpation along with ultrasonography was more accurate than the conventional rectal palpation and brought better result of treatment for major types of reproductive failures. It was also indicated that non-uses of reproductive record and play ground were also important factors in occurrence of reproductive failures.

• Applied Chemistry for Engineering
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• v.16 no.5
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• pp.664-671
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• 2005

In this study, the effect of sosurfactant on microemulsion phase behavior was investigated in ternary systems containing alkyl ethoxylates nonionic surfactant, water and d-limonene. The addition of a cosurfactant produced a microemulsion phase over a wide range of temperature and promoted formation of a microemulsion phase at lower temperatures. In particular, small amounts of n-propanol, as a cosurfactant, were found to be the most effective in extending a microemulsion phase region over a wide range of temperature. Temperature sensitivity of a nonionic surfactant system was effectively relieved by addition of the anionic surfactant sodium dodecyl sulfate. And the formation of one phase microemulsion was not affected by pH, hardness concentration and addition of an antioxidation agent. The cleaner candidates were determined from microemulsion phase behavior study, and their cleaning efficiency was tested using a dipping method. All the cleaner candidates selected during this study showed excellent removal efficiency for abietic acid over a temperature range from 30 to $40^{\circ}C$ presumably due to a decrease in interfacial tension.

• Korean Journal of Environmental Biology
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• v.20 no.3
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• pp.224-231
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• 2002

Photoperiod (length of light per day) is a major factor in regulating reproductive function in golden hamsters. The information of photoperiod is transmitted to the reproductive endocrine system by melatonin. Thus the effects of melatonin aye investigated in male golden hamsters exposed to photoperiods. Paired testicular weights were markedly reduced in the animals housed in short photoperiod $(SP,\le{12\;hours\;day^{-1})$ and injected with melatonin in the evening, but not in long photoperiod $(LP,\le{12.5}\;hours\;day^{-1})$ and injected with melatonin in the morning. The histological examination of regressed testes showed reduction of tubular lumen diameter including the numbers of cells and Leydig cell number. The mean values of both follicle stimulating hormone (FSH) and luteinizing hormone (LH) were also lowered in the sexually inactive animals than in the sexually active animals. Melatonin receptor was identified by reverse-transcription polymerase chain reaction (RT-PCR) and its expression was examined in various tissues to scrutinize the action site of melatonin. It turned out 309 nucleotides and was definitely expressed in hypothalamus and pituitary including spleen, retina, and epididymis. And gonadotropin releasing hormone (GnRH) gene, which is a key element in regulating reproduction, was identified by RT-PCR but the expression of GnRH was not modified by the treatment of melatonin. Taken together, photoperiod via melatonin indirectly affects reproductive endocrine system, possibly through the release of GnRH, not the synthesis of GnRH.