• The Science & Technology
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• v.33 no.2 s.369
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• pp.32-33
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• 2000

한국농공학회는 1957년 1월 26일 대한농업토목기술협회로 발족하여 금년으로 43년을 맞이하게 되었다. 학회는 현재 정회원 1천6백28명, 준회원 1백20명, 단체회원 95개사, 명예회원 1명으로 구성되어 있으며 매년 사업으로는 학회지를 연 6회 발간, 영문논문집 1회 발간, 농업공학에 관한 설계기준, 기술편람, 기술자문을 광범위하게 시행하고 있고 1999년은 경북대학교에서 1백25편의 학술논문발표, 외국인 초청 특별강연 3인(일본,중국) 부인회 시찰 및 관광, 체력단련을 개최하였다.

• Journal of Korean Medical classics
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• v.24 no.4
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• pp.33-41
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• 2011

唐孙思邈(581~682年)撰"千金要方"共30卷, 于公元652年. 孙思邈以为"人命至重, 有贵千金, 一方济之, 德逾于此", 故以千金命书名. 在中国, 对于近来日本发现的新板本"孙眞人千金方"进行研究. 但在韩国国内僅有筆者的对"孫眞人千金方"与"備急千金要方"之目次的比較硏究. 笔者的硏究是主要对"孙眞人千金方"与"备急千金要方"的妇科内容比较分析异同点. 结果"备急千金要方"这本书比"孙眞人千金方"的内容和体制上更为简单和明了, 可是不但丢失了"孙眞人千金方"旧貌, 还要考虑不能认为宋代在校正医书局校订的部分完全正确.

• The Science & Technology
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• v.31 no.5 s.348
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• pp.86-87
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• 1998

노벨상에 기술상이나 공학상은 아직 없다. 그러나 기술자도 노벨과학상을 수상한 예가 초창기엔 더러 있었다.1909년 무선통신발명으로 물리학상을 받은 마르코니 등 그리고 X선을 발견한 독일의 뢴트겐, 전기기사였던 퀴리부인의 사위 프레드릭퀴리 등 다수가 공과계였다 .또1차 과학혁명을 일으킨 갈릴레오나 뉴턴은 망원경을 제작하거나 발명하는 등 기술능력을 보여주었다. 우리도 과학기술 교육의 혁식으로 노벨상수상의 꿈을 이루어야 하겠다.

• Review of KIISC
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• v.5 no.3
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• pp.107-121
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• 1995

제 5권 제 1호에 이어 상대방이 자신이라고 주장한 실체가 정말 그 실체인지를 인증하기 위한 기법을 표준화하는 과제 중의 네번째로 "암호학적 화인 함수를 이용한 인증"을 소개한다. 이 과제는 제 2부인 "대칭형 암호기술을 이용한 인증"과 많이 유사하므로 쉽게 진행되어 1993년에 CD(Committee Draft), 1994년 DIS(Draft for International Standard)가 되었고 1995년에 IS(International Standard)가 되었으며 1999년에 1차 검토가 있을 예정이다.99년에 1차 검토가 있을 예정이다.

• The Journal of Korean Obstetrics and Gynecology
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• v.34 no.3
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• pp.65-78
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• 2021

Objectives: This study was aimed to investigate the weight change of the high-risk group and the general maternal group and weight-relating factors in the early postpartum period. Methods: We retrospectively reviewed the medical records of those who received postpartum care from January 1, 2020, to December 31, 2020, in the postpartum care center affiliated with one Korean Medicine hospital. A total of 257 postpartum women's medical charts were included and divided into the high-risk group and the general maternal group. We investigated the weight changes and Body mass index (BMI) of the postpartum women and compared the difference between the two groups after taking the postpartum care. Finally, we used a Pearson correlation analysis to identify the weight-relating factors in the early postpartum period. Results: All the postpartum women showed the following results; 33.81±4.03 years old as the mean age; 22.23±3.28 as pre-pregnancy BMI; 58.21±9.18 kg of pre-pregnancy weight increased into 70.75±9.70 kg in the last month of pregnancy. Of the total 257 patients, 149 (58.0%) of high-risk pregnancy experience and 108 (42.0%) of general pregnancy were included. The edema index right after childbirth was significantly higher in the high-risk group than in the general maternal group (p<0.001), but there was no significant difference in BMI. After treatment with Korean medicine treatments, body weight, BMI, and edema index decreased significantly in both groups (p<0.01). As a result of correlation analysis, weight gain during pregnancy had a significant negative correlation with pre-pregnancy weight and pre-pregnancy BMI and a significant positive correlation with weight and BMI of the last month of pregnancy. In particular, pre-pregnancy BMI and body weight showed a significant negative correlation only in the high-risk group. Postpartum weight loss was significantly positively correlated with pre-pregnancy weight, pre-pregnancy BMI, weight & BMI of the pregnancy last month, weight gain during pregnancy, and decrease in edema (p<0.01) Conclusions: The weight during pregnancy of the high-risk group increased in inverse proportion to the pre-pregnancy BMI. The level of edema right after childbirth was significantly higher than that of the general maternal group, but showed a significant decrease after 2 weeks of Korean medicine treatments. Although it implicates the need for active Korean medicine treatments in the early postpartum period, further studies with controlled groups are needed.

• The Journal of Korean Obstetrics and Gynecology
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• v.35 no.4
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• pp.91-104
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• 2022

Objectives: This study was performed to review the impact of Coronavirus disease 2019 (COVID-19) infection during pregnancy and the applicability of traditional Chinese medicine (TCM) on COVID-19 infection during pregnancy. Methods: We searched 6 data bases on August, 2022 and articles about the impact of COVID-19 infection during pregnancy, TCM treatment of COVID-19 infection, TCM treatment of pregnancy common cold (姙娠 感冒) or cough (姙娠 咳嗽) were reviewed. Results: COVID-19 infection can bring out negative effects both on pregnant women and fetus. In the case of COVID-19 infection during pregnancy, the symptoms and treatment are similar to those of general COVID-19 infection, but the safety of drug intervention has not been completely verified. Herbal medicine treatment can be applied according to the severity, stage and TCM syndrome types of COVID-19 infection, but the prohibited herbs list during pregnancy and its dosage should be checked carefully. Also, when it comes to pregnancy disease, the effect of "Stabilizing Fetus" should be considered in the perspective of TCM treatment strategy. Glycyrrhizae Radix et Rhizoma, Rhizoma Atractylodis Macrocephalae, Scutellariae Radix have been widely used on COVID-19 infection and the safety of them during pregnancy have been verified. In the case of acupuncture treatment, acupoints also can be selected according to the severity, symptoms, and TCM syndrome types of COVID-19, but acupoints with strong Qi sensitivity or acupoints located in lower abdomen should be avoided during pregnancy. Conclusions: TCM treatment can be applied to COVID-19 infection during pregnancy. Clinical studies and systematic reviews of the efficacy and safety of TCM treatment on COVID-19 infection during pregnancy are required.

• The Journal of Korean Obstetrics and Gynecology
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• v.21 no.1
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• pp.28-38
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• 2008

Purpose: This study was conducted to investigate the muscular strength & stamina improvement and muscle anti-fatigue effects of Morinda officinalis How after long term administration. Methods: 4-6 weeks old ICR mice were used in this study and we administered the water soluble extracts of Morinda officinalis How in the concentration of 1, 10. 100/mg/0.3ml to each 5 mice (ATS group) and same volume of normal saline was administered to 5 mice (control group) once a day for 90 or 120 days. After the administration we performed the swimming exercise test and the grip strength test. And we measured the concentration of glucose and the activity of lactate dehydrogenase in plasma regarded as biochemical indicator related with the muscular fatigue. Results: In swimming exercise test, all ATS groups showed increased time compared with relative control group after 90 days administration. After 120 days adminstration 100/mg/0.3ml ATS groups showed increased results. In grip strength test, all ATS groups showed increased grip strength compared with relative control group after 90 days administration. After 120 days adminstration 10/mg/0.3ml ATS groups showed increased result. All the results of plasma glucose didn't showed statistically significant difference after 90 and 120 days administration. In the plasma concentration of activity level of lactate dehydrogenase, all ATS groups didn't showed statistically significant difference compared after 90 days administration. Conclusion: This study show that Morinda officinalis How can increase the muscular strength & stamina and anti-fatigue effect.

• The Journal of Korean Obstetrics and Gynecology
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• v.20 no.2
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• pp.71-82
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• 2007

목 적 : 본 연구는 기간별 구자 투약이 생쥐의 생식능력에 미치는 영향을 알아보고자 하였다. 방 법 : 이를 위해 30일, 60일, 90일 및 120일간의 구자 투약이 생쥐의 총 정자수, 활동 정자수, 정상형태 정자수, 고환조직 및 hyaluronidase activity를 측정하여, 다음과 같은 결론을 얻었다. 결 과: 1. 총 정자수는 60일과 90일 투여 후 대조군에 비하여 증가하였다. 2. 활동 정자수는 60일, 90일 및 120일 투여 후 대조군에 비하여 증가하였다. 3. 정상 형태 정자수는 60일, 90일 및 120일 투여 후 대조군에 비하여 증가하였다. 4. 고환 세정관의 조직학적 변화는 60일 투여 후에 가장 현저히 나타났다. 5. Hyaluronidase activity는 모든 투여군에서 대조군에 비하여 증가하였다. 결 론: 이상의 결과를 통해 60일 이상의 구자 투약이 남성 생식능력을 활성화 할 수 있다고 사료된다.

• Korean Journal of Materials Research
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• v.2 no.3
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• pp.220-227
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• 1992

Electrorheological(ER) fluid's storage shear modulus(G') and loss factor(${\eta}$) have been directly measured using small amplitude forced oscillating rheometer as a function of oscillating frequency, strain amplitude and applied electric field. Two types of experiment were performed , (a) frequency sweep and (b) amplitude sweep. Two kinds of sample were employed for this experiment ; cornstarch particles in corn oil and zeolite particles in silicone oil. The storage shear modulus was a strong function of driving frequency. Generally, the modulus increased with driving frequency. On the other hand, the loss factor was not well behaved as storage modulus, but as the driving frequency increases the loss factor slightly decreases was the trend of the material's characteristics. Also the modulus was a strong function of strain amplitude. Generally, modulus decreased with increasing strain, but loss factor increases slightly with increasing strain amplitude. For G', cornstarch in corn oil ER fluid has higher values than zeolite based fluid as we increased applied electric field. On the other hand, zeolite based fluid has higher values for ${\eta}$. There is a reasonable agreement between theoretical calculation and experiment.

• The Journal of Korean Obstetrics and Gynecology
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• v.28 no.2
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• pp.26-39
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• 2015

Objectives : Dendropanax morbifera is known as a tree that has been used in traditional medicine for various diseases. However, its biological activities in cancer have not yet been clearly elucidated. In this study, we investigated the anti-cancer effects of water extract of Dendropanax morbifera (DP) on 2 human breast cancer cell lines (estrogen dependent MCF-7 and estrogen independent MDA-MB-231). Methods : The MTT assay and flow cytometry were used to assess cell proliferation, along with cell cycle analysis. Nitric oxide production was detected by Griess assay. The expression of apoptosis related gene was assessed by quantitative real-time PCR. Results : Our data revealed that DP inhibits the cell growth in a dose dependent manner (0, 50, 100, 250, and 500 μg/ml) of both estrogen independent MDA-MB-231 and estrogen dependent MCF-7 breast cancer cells. Also, LPS induced nitric oxide production was significantly reduced by DP. Cell cycle analysis showed an increased G1 phase in the MCF-7 cell and G2/M phase in the MDA-MB-231 cell. DP decreased mRNA expression of apoptotic suppressor gene Bcl-xL, and increased mRNA expression of pro-apoptotic genes. DP increased mRNA expression of p21, and Rip1 in both cell. And DP decreased mRNA expression of survivin in the MCF-7 cell. Conclusions : Taken together, these results indicate that DP extract are source of anti-cancer potential and could be developed botanical drug.