• 한국융합학회논문지
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• 제10권6호
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• pp.65-71
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• 2019

이 연구의 목적은 간 섬유화로 인한 간경변 모델에서 c-Myc과, Thymosin-${\beta}4$ 유전자의 발현을 알아 보고자 실시하였으며 연구 방법은 2군으로 나누어 섬유화로 인한 간경변 모델 실험군과 증류수를 이용한 대조군으로 분류 한 후 실험을 하였다. 본 연구를 통한 결과는 간경변 모델 실험군은 대조군에 비하여 c-Myc과 Thymosin-${\beta}4$의 발현이 증가 되는 것을 뚜렷하게 알 수 있었고, 전자현미경적 검경 외에 여러 특수 염색을 통하여 간조직의 변화를 관찰 할 수 있었다. 결론적으로 기존 간기능 검사 관련 임상검사에서 질환 예방과 질환 판정 시 혈청학적 변화와 조직학적인 검사와 더불어 c-Myc과 Thymosin-${\beta}4$의 분자 기법을 통한 유전자의 발현 상태를 확인함으로써 간 질환 판정에 기여 할 수 있을 것으로 사료 되며, 향후 이 연구를 기반으로 실험군의 종류와 관련 유전자를 추가 하여 심도 있는 연구를 진행할 예정이다.

• 한국동물위생학회지
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• 제46권3호
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• pp.193-202
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• 2023

Porcine epidemic diarrhea is an infectious intestinal disease caused by the porcine epidemic diarrhea virus (PEDV). Especially, when suckling piglets are infected, the mortality rate is close to 100%. PEDV is classified into G1 and G2 types based on genetic differences. The G2 type PEDV outbreak in the United States in 2013 was highly pathogenic and contagious, and it has spread worldwide and caused continuous economic losses. Most commercial vaccines used are G1 type vaccines, and existing vaccines do not fully protect piglets due to genetic differences. In this study, we evaluated the safety of the newly developed G2 type attenuated HSGP vaccine strain by inoculating it into piglets and testing whether the vaccine virus spreads to the non-vaccinated, negative pigs and whether the vaccine reverts to its virulence during serial passage experiments. Each experiment lasted for 7 days for each passage, and fecal viral titers, clinical symptoms, and weight gain were measured daily. After the experiment, necropsy was performed to measure intestinal virus titer and pathological evaluation. As a result of the first passage, no transmission of the vaccine virus to negative pigs co-housed with vaccinated pigs was observed. In addition, after four consecutive passage experiments, the clinical symptoms and small intestine lesions were gradually alleviated, and no virus was detected in the feces in the fourth passage experiment. Therefore, it was concluded that the vaccine was safe without virulence reversion in accordance with the guidelines of the current licensing authority. However, further studies are needed on the genetic changes and biological characteristics of the mutant virus that occur during successive passages of the attenuated vaccine since the replication and clinical symptoms of the virus increased until the third passage during successive passages of the vaccine virus. Based on this study, it was concluded that virulence reversion and safety evaluation of attenuated vaccines through serial passage in target animals can be useful to evaluate the safety of attenuated viruses.

• 한국축산식품학회지
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• 제20권2호
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• pp.114-124
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• 2000

In this research the results showed that Evans blue stain causes vascular permeation at antibody injection site by the passive cutaneous anaphylaxis(PCA) screening of octpus minor so we concluded. Octopus minor causes allergy. Psedosciaena Polyactis, Raja Kenojei, Metapenaeus joyneri also showed allergenicity. Microwave and autoclaving appeared to reduced allergenicity(up to 99%) during the technological treatment processing. On the other hand, UV light didn't seem to change the protein structure of allergens affect the allergenicity. Therefore, the technological treatment processing of fish such as canning and microwave would possibly reduce the allergenicity. Among the ultrafiltration fraction of Octopus minor, Pseudosciaena Polyactis, Raja Kenojei and Metapenaeus joyneri, those fraction over 100,000 contained allergen and those under 100,000 and when screening allergenic fish went through 10,000∼100,000 ultrafiltration, only the fraction of over 100,000 showed the anaphylactis activity for PCA. However whether screening fish would cause anaphylaxis in human or not is questionable. The future clinical experiment will verify this result with clinical experiment patients. 본 연구 결과로 낙지의 PCA검색으로써 항체주사 부위에 Evan's Blue 착색으로 인하여 vascular permation이 일어나 allergynicity 반응이 인정되므로 낙지는 allergy가 있다고 할 수 있다. 조기, 홍어, 새우도 역시 allergenicity성이 나타난 것을 볼 수 있었다. 또한 공정 중 microwave와 autoclaving은 4가지 수산식품 낙지, 조기, 홍어, 새우의 allergenicity를 현저히 감소시키는 것으로 나타났다. 반면에 자외선은 단백질로 구성된 allergen의 구조는 크게 변화시키지 못하는 것으로 보여진 것을 알 수 있다. 그러므로 생선의 가공방법은 통조림 가공이나 microwave 처리가 allergenicity성을 감소시킬 수 있는 것으로 보여진다. 낙지, 조기, 홍어, 새우의 한외여과 fraction중 고분자인 100,000이상에서만 allergenicity가 나타났다. 따라서 이 allergen들의 분자량은 100,000 이상으로 추정되며 검색된 allergynicity 생선을 10,000∼100,000으로 한외여과 하였을 때 100,000 이상의 fraction에서만 PCA에 의해 allergenicity가 있는 것으로 인정되었다. 그러나 이 검색된 생선이 anaphylaxis가 인간에게서까지도 반응할지는 의문이다. 이 연구의 결과는 차후 임상실험환자에 의하여 최종 검증되어야 한다.

• Communications for Statistical Applications and Methods
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• 제23권1호
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• pp.57-70
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• 2016

Type-II progressive censoring is one of the censoring methods frequently used in clinical studies, reliability trials, quality control of products and industrial experiments. Sometimes in Type-II progressive censoring experiments, the failure rate is low so the waiting time to observe the $m^{th}$ failure will be very long; however, the experimenter may have to terminate the experiment before a predetermined time. In this article, if two generalized types of Type-II progressive censoring are reminded, we then make some changes in the removal method of Type-II progressive censoring such that without reducing the deduction quality, the termination time of the experiment decreases. This can be done with decreasing withdraws throughout the steps of the experiment with a special reasonable method. A simulation study is done and the results are tabulated at the end of this article for a comparison between introduced method and Type-II progressive censoring.

• 사상체질의학회지
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• 제2권1호
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• pp.123-134
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• 1990

In order to investigate experimentally the clinical effects of Taeuminkalkunhaeki-tang (太陰人葛根解肌湯) that was prescribed to cure the Kansuyolriyolbyong (肝受熱裏熱病) of Taeumin, the author experimented various activities of mixed extract from Taeuminkalkunhaeki-tang by the methods prescribed in the experimental part. The results of the studies were summarized as follows: 1. Sedative effects such as malfunction of the spontaneous motor activity in the wheel cage method experiment and muscle relaxation in the rotor rod method experiment were noted. 2. In mice, the prolongation of the duration of hypnosis Induced by thiopental-Na was noted. 3. In the acetic acid method experiment and the pressing hind paw method experiment, analgesic effects were noted. 4. Inhibitory effects were noted on the convulsions incuced by strychine and picrotoxin. 5. The expansion of blood vessels by relaxation of smooth muscle was noted. According to the above results, effects based on oriental medical references approximate to the actual experimental results.

• 대한의용생체공학회:의공학회지
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• 제28권2호
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• pp.265-270
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• 2007

Polarization imaging systems have been widely used to selectively characterize skin lesions. Nevertheless, current systems are used in single-mode due to the limitations of a fixed polarization mode and a single-working distance of light source, in which uniform light distribution is achieved on target area. To address such limitations, we developed a variable polarization imaging system based on multi-working distance of light source for various clinical diagnoses. In this study, we characterize the imaging system and present experiment results demonstrating its clinical usefulness. The imaging system consists of a CCD color camera, linear polarization filters, and a single-layered LED ring light source which provides uniform light distribution at multi-working distances. The first polarizer was placed on the light source and the second polarizer placed on objective lens provides continuous linear polarization angle from $0^{\circ}\;to\;90^{\circ}$. The clinical efficacy of the imaging system was investigated by acquiring and analyzing clinical images of skin wrinkle and dental plaque. With the experiments, we verified the potential usefulness of the imaging system for other clinical applications.

• 대한한방체열의학회지
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• 제7권1호
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• pp.1-13
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• 2009

Purpose: To evaluate the hot flush relief efficacy of Yiseontang-gami in climacteric women with hot flushes, a vasomotor symptom. Methods: The 20 subjects who signing on the clinical trial written consent by self-will is registered this clinical trial after decided suitable by selection and exception standard, after take a medical experiment and checkup according to clinical trial plan. Registered subject should valuated by settled schedule after take the testing medicine(Yiseontang-gami)during thirty-day. The evaluating indexes of this trial are hot flush VAS, hot flush frequency, hot flush consistence time, sweating VAS, palpitation VAS, sleep disturbance VAS, MRS, MENQOL, PGA. Results: The results were as follows 1. 4 subjects dropped out of the clinical trial and 16 subjects completed it. 2. After Yiseontang-gami treatment, hot flush VAS, hot flush frequent, sweating VAS, Palpitation VAS, sleep disturbance VAS improved significantly. 3. After Yiseontang-gami treatment, hot flush consistence time was not improved significantly. 4. After Yiseontang-gami treatment, blood test value were not different significantly. Conclusion: In this clinical trial we consider that Yiseontang-gami is suitable treatment for the hot flushes and related symptoms.

• 대한한방부인과학회지
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• 제21권3호
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• pp.75-89
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• 2008

Purpose: To evaluate the hot flush relief efficacy of Yiseontang-gami in climacteric women with hot flushes, a vasomotor symptom. Methods: The 20 subjects who signing on the clinical trial written consent by self-will is registered this clinical trial after decided suitable by selection and exception standard, after take a medical experiment and checkup according to clinical trial plan. Registered subject should valuated by settled schedule after take the testing medicine(Yiseontang-gami)during thirty-day. The evaluating indexes of this trial are hot flush VAS, hot flush frequency, hot flush consistence time, sweating VAS, palpitation VAS, sleep disturbance VAS, MRS, MENQOL, PGA. Results: The results were as follows 1. 4 subjects dropped out of the clinical trial and 16 subjects completed it. 2. After Yiseontang-gami treatment, hot flush VAS, hot flush frequent, sweating VAS. Palpitation VAS, sleep disturbance VAS improved significantly. 3. After Yiseontang-gami treatment, hot flush consistence time was not improved significantly. 4. After Yiseontang-gami treatment, blood test value were not different significantly. Conclusion: In this clinical trial we consider that Yiseontang-gami is suitable treatment for the hot flushes and related symptoms.

• Asian-Australasian Journal of Animal Sciences
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• 제30권5호
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• pp.672-682
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• 2017

Objective: This study was conducted to investigate the effects of probiotic, prebiotic and synbiotic with and without feed restriction on broilers performance, blood parameters, carcass characteristics, and feed cost of production from 1 to 56 days of age. Methods: Two hundred and forty unsexed one day-old chicks of Arbor Acres breed were used. Two trials, I and II, were conducted, with 120 birds in both. Each trial was divided into 4 equal groups. The birds in trial I were fed ad libitum throughout the experiment, while the chicks in trial II were fed ad libitum during the first week of age, then subjected to 5 hours/d of feed restriction from the beginning of the second week up to the end of the experiment. In both trials, the birds in group 1 were fed on a control diet while the other groups were given the same control diet supplemented either with a probiotic in group 2, prebiotic in group 3, or synbiotic in group 4. Results: It was found that chicks fed diets supplemented with probiotic, prebiotic and synbiotic (with and without feed restriction) exhibited higher body weight and feed efficiency than chicks fed the control diets. The feed additives in both trials did not affect hemoglobin, serum total protein, albumin, globulin, glucose, and total cholesterol, except the packed cell volume which was increased in the additive treatments with restriction at the end of the experiment. Moreover, the dietary treatments did not influence the carcass yield. However, the relative weights of liver, gizzard and proventriculus, small intestine and bursa of fabricius were found to be increased. The additives decreased the visible fat in the carcass, with more decreasing effect in the additive groups with restriction. The lowest feed cost per kg of weight gain was observed in the birds fed diets supplemented with synbiotic, probiotic and prebiotic. Feed restriction improved the feed conversion ratio, economic return, but decreased the feed intake, serum total cholesterol and visible fat in comparison with non-restricted groups. Conclusion: The biological feed additives could be routinely added to broiler diets, especially when a feed restriction program is followed. Finally, it can be recommended to restrict feed, and add probiotic or synbiotic to increase weight, improve feed conversion rate and reduce feed cost of production.

• 한국치위생학회지
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• 제2권2호
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• pp.145-158
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• 2002

This is a section study for research of main cause and coping ways caused by stresses during the clinical experiment. It was researched by 231 students of third grade have finished clinical experiment until September though questionnaire. The methods for this study used the a stress measuring instrument thai was used by Hoa-Yun Jun and coping ways of stresses devised by Bell. We computed the frequency and the mean value by the SPSS 10.0 statistical data and we got the following result that from the experiment with t-test and the ANOVA analysis. 1. The mean value of stresses indicated rather higher states in figures 2,855 and the figures that were classified by each areas, indicated highest figures are affected by circumstances, that is 3.065. 2. As higher as the degree of satisfactions in their major, students feel stress less so, the result was not quite different between each of them (p=0.007). 3. The copping ways of stresses indicated, similar differences by using of long-term copping ways and short-term copping ways to cope with stresses(p=0.000). 4. In case of the students who failed college entrance exams and prepared for the next chance for more than one year, indicated highest figures that is 2.57 in short-term ways to cope with stresses, so it showed slightly differences between them(p=0.014). 5. According to the satisfactions of clinical experiments, there were not any statistical differences in long-term coping ways but, as smaller as the satisfactions, in that evidence of the students use short-term copping ways, it showed slightly differences between them(p=0.041). 6. According to the degree of stresses, low-stress groups use short-term coping ways more than high-stress groups, so it showed slightly differences between them(p=0.001). 7. As far as the using of long-term coping ways, the figures of between the lower stress groups and the higher stress groups indicated 2.89 and 2.97 respectably so, the figures were not so closed.