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농어촌 지역의 한방의료 이용 실태에 관한 조사 : 전남 신안군 장산면을 중심으로
宋峰根,黃忠演,文錫哉 圓光大學校 韓醫學硏究所 1992 원광한의학 Vol.2 No.1
The prevalence of disease is affected by cultural factors. Changing cultural and social pattern may modify patterns of disease. Today majority of labor force in rural community is elderly population with a concomitant increase in woman. We investigated prevalence of problems in rural population utilizing oriental medical clinic in Changsan-myon, Shinan-gun, Chunnam. The majority of patients in this area were female and in the 40 to 60s. Muscoskeletal problems had the highest incidence. Low back pain was leading complaints in the muscoskeletal problems and knee pain was the most common complaints in the digestive problems, headache in the neurologic problems. cough in the respiratory problems, hypertension in the circulatory problems, ear problems in the sense organ problems, pruritys in the dermatologic problems, leukorrhea and postmenopausal syndrome in the gynecologic problems, and dysuria and enuresis in the urinary problems. These results suggest that oriental medical physicians have attention to health care and management of the expanding population of elderly and female patients with high incidence of muscoskeietal problems in the rural community.
裵錫悌,宋之浩,李吉來,鄭興基,洪聖根,趙鳳坤,朴種洙 군산대학교 1983 群山水産專門大學 硏究報告 Vol.17 No.1
In order to develop the curriculum of the fishery department in the fisheries Jr. college, We have collected and analyzed the domistic and foreign data adquated to the fishey department under the international trend, also we gathered the opinion from the inquiring paper investigation and consultation to the industrial field, concerned college and graduate during the 6 month from September 1982. The fishery department curriculum in fisheries Jr. college will be industrialized with the concerned technics and knowledge in relation to speciality of maritime affairs. Accordingly, we have developed the adquate curriculum which is practical and can be cultivated the technician to adopt in the industrial society.
鮟鱇網 漁具 漁法의 改良에 관한 硏究(Ⅱ) : 展開帆을 이용한 改良漁具 試驗(豫報)
李吉來,宋之浩,朴鍾洙,徐萬錫,趙鳳坤,朴正鎬,洪聖根,鄭公炘,裵錫悌,鄭與基,金鎭乾 군산대학교 1980 群山水産專門大學 硏究報告 Vol.14 No.1
Ordinarily stow net fisheries was used by floater beam and sinker beam for the purpose of spreading the mouth of net. But it was not only iuconvenient and dangerous but much defective. In this thesis, we have studied fundermental experiment of the improved stow net fishing gear using head rope, ground rope and otter sail instead of floater beam and sinker beam. From the result of this experiment, it has been succeeded for fishing work to achieve basically without any difficulty. The results obtained in this study were as follows. 1) The resistance of fishing gear was estimated R≒7V2 as possible as it is taken greatly. (R: Resistance V: the rate of current) 2) The interval of otter sail was spreaded smoothly. Being in normal condition, it was maintamed the width 37-38m. It was heared comparison with net mouth of ordinary gear, and the shearing force was enough. 3) The height of mouth was lower than we have anticipated to and seemed to have the supplement of buoyancy. But according to increasing the rate of current, the lowness of mouth height was little affected. 4) The height of otter sail was decreased at the rate of 30% by the rate of current, on the contrary, the height of wing was not decreased owing to sufficient buoyancy, 5) The adjustment of extention length of hanging wire(connected with fishing boat) and raising wire(with otter sail) was great important problem and it must be dealed with the most moderatly because of a corelation between the spreading of fishing gear and catching ability. 6) On the depth of 30m, it was taken 25 minuits to cast anchor and lines, 20 min cast net, 24 min haul net, 45 min haul lines and heave anchor, respectively. 7) The improved stow net with otter sail was cleared up the defects and difficult problems in ordinary gear using floater beam and sinker beam, and it have more advantages of fishing work than ordinary one. But there were involved in lots of problems in details to solve in the future.
이수훈,김봉석,강태한,송준엽,강재훈,서천석 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-
This paper deals with a prediction method of tool life in view of the reliability assessment. In this study, the flank wear was studied among multi-factors deciding the tool wear state. Firstly, tool life was predicted by correlation between flank wear and cutting time, based on the extended Taylor tool life equation of turning data, including parameters of cutting speed, feed rate, and cutting depth. Secondly, each of cutting conditions of endmilling was equivalently converted to apply ball endmill data to the extended Taylor equation. The web-based reliability prediction program for tool life is being developed as one of reliability assessment programs to for the machine tools.
Aspergillus niger SFN-416으로부터 생산한 Xylanase 2의 분리정제 및 특성
성찬기,이상원,박석규,손봉수 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.6
Aspergillus niger SFN-416으로부터 생성된 xylanase Ⅱ를 분리·정제하여 특성을 조사하였다. Aspergillus niger SFN-416의 배양액을 ethanol(70%) 침전, (NH_4)_2SO_4(30~90%) 침전, Sephadex G-100 chromatography 및 DEAE-Sephacel chromatography 등의 정제과정을 거친 결과, specific activity가 38.2 units/ mg protein으로 4.3배 정제되었고, 정제효소의 최적 활성온도는 50℃였다. 최적 pH는 5.5이었고, pH 4.5~6.0 사이에서 비교적 안정하였다. 또한 금속이온에 대한 효소의 활성은 대부분 억제를 보였고, 특히 Hg^2+에서는 3.7%로 강하게 효소활성이 저해됨을 보였고, Fe^2+에서는 100%의 상대활성을 나타내었다. 정제 효소의 분자량은 SDS-PAGE에 의하여 42,000 daltons이었으며, 유기용매에 대한 활성은 10%의 methanol, ethanol, isopropanol 및 1-butanol에 대하여 모두 낮은 활성을 나타었다. Xylanase (EC 3.2.1.8) was purified approximately 4,3 fold from Aspergillus niger SFN-416 by ammonium sulfate fractionation, Sephadex G-100 gel filtration and DEAE-Sephacel ion exchange chromatography. Molecular weight of the enzyme was approximately 42,000 daltons. The optimum pH and temperature of the enzyme activity were 5.5 and 50℃, respectively. The enzyme activity was enhanced by Fe^2+, and inhibited by Hg^2+. The activity was decreased by addition of methanol, ethanol, isopropanol and 1-butanol at a concentration of 10%(v/v).
Bong-Seok Song,Ji-Su Kim,Bo-Woong Sim,Seung-Bin Yoon,Young-Hyun Kim,Jae-Jin Cha,Seon-A Choi,Hyun-Ki Min,Sun-Uk Kim,Kyu-Tae Chang 한국동물생명공학회(구 한국동물번식학회) 2011 발생공학 국제심포지엄 및 학술대회 Vol.2011 No.1
Successful early embryogenesis of somatic cell nuclear transfer (SCNT) embryos is very important to produce cloned animals. However, poor preimplantation development of SCNT embryos has been a major obstacle to the generation of cloned animals due to a lack of understanding of developmental events and underlying mechanism(s). In the current study, we show that production of SCNT embryos with high developmental competence is dependent on the fusion method. Electrofusion causes spontaneous egg activation, accompanied by an increase in intracellular Ca2+ and improper nuclear remodeling, whereas Sendai virus (SV)-mediated fusion greatly reduces these events. In addition, SV-SCNT increased the blastocyst development rate and trophectoderm cell number compared to electrofusion-mediated SCNT (E-SCNT). In particular, expression of ER stress-associated genes and blastomere apoptosis were significantly increased in E-SCNT embryos, which could be alleviated by inhibition of ER stress or by using the SV-mediated fusion method. Taken together, these results strongly suggest that SV is a useful fusion material for improvement of preimplantation development of SCNT embryos through reduction of ER stress-associated apoptosis.
Bong-Seok Song,Seung-Bin Yoon,Ji-Su Kim,Bo-Woong Sim,Young-Hyun Kim,Jae-Jin Cha,Seon-A Choi,Sun-Uk Kim,Kyu-Tae Chang 한국동물번식학회 2012 Reproductive & Developmental Biology(Supplement) Vol.36 No.2s
The coupling of autophagy and endoplasmic reticulum (ER) stress has been implicated in a variety of biological processes. However, little is known regarding the involvement of the autophagy/ER stress pathway in early embryogenesis or the underlying mechanism (s). Here, we showed that the developmental competence of in vitro-produced (IVP) bovine embryos was highly dependent on the autophagy/ER stress balance. Although relative abundances of autophagy-associated gene transcripts, including LC3, Atg5, and Atg7 transcripts, were high in oocytes and throughout the early stages of preattachment development, extensive autophagosome formation was only detected in fertilized embryos. Using inducer and inhibitor of autophagy, we showed that transient elevation of autophagic activity during early preattachment development greatly increased the blastocyst development rate, trophectoderm cell numbers, and blastomere survival; these same parameters were reduced by both inhibition and prolonged induction of autophagy. Interestingly, the induction of autophagy reduced ER stress and associated damage, while the developmental defects in autophagy-inhibited embryos were significantly alleviated by ER stress inhibitor treatment, indicating that autophagy is a negative regulator of ER stress inearly embryos. Collectively, these results suggest that early embryo genesis of IVP bovine embryos depends on an appropriate balance between autophagy and ER stress. These findings may increase our understanding of important early developmental events by providing compelling evidence concerning the tight association between autophagy and ER stress, and may contribute to the development of strategies for the production of IVP bovine blastocysts with high developmental competence.
Song, Bong-Seok,Yoon, Seung-Bin,Sim, Bo-Woong,Kim, Young-Hyun,Cha, Jae-Jin,Choi, Seon-A,Jeong, Kang-Jin,Kim, Ji-Su,Huh, Jae-Won,Lee, Sang-Rae,Kim, Sang-Hyun,Kim, Sun-Uk,Chang, Kyu-Tae Commonwealth Scientific and Industrial Research Or 2014 Reproduction, fertility, and development Vol.26 No.3
<P>Despite the positive roles of histone deacetylase inhibitors in somatic cell nuclear transfer (SCNT), few studies have evaluated valproic acid (VPA) and its associated developmental events. Thus, the present study was conducted to elucidate the effect of VPA on the early development of bovine SCNT embryos and the underlying mechanisms of action. The histone acetylation level of SCNT embryos was successfully restored by VPA, with optimal results obtained by treatment with 3mM VPA for 24h. Importantly, the increases in blastocyst formation rate and inner cell mass and trophectoderm cell numbers were not different between the VPA and trichostatin A treatment groups, whereas cell survival was notably improved by VPA, indicating the improvement of developmental competence of SCNT embryos by VPA. Interestingly, VPA markedly reduced the transcript levels of endoplasmic reticulum (ER) stress markers, including sXBP-1 and CHOP. In contrast, the levels of GRP78/BiP, an ER stress-alleviating transcript, were significantly increased by VPA. Furthermore, VPA greatly reduced cell apoptosis in SCNT blastocysts, which was further evidenced by the increased levels of the anti-apoptotic transcript Bcl-xL and decreased level of the pro-apoptotic transcript Bax. Collectively, these results suggest that VPA enhances the developmental competence of bovine SCNT embryos by alleviating ER stress and its associated developmental damage.</P>
Song, Bong-Seok,Kim, Ji-Su,Kim, Young-Hyun,Sim, Bo-Woong,Yoon, Seung-Bin,Cha, Jae-Jin,Choi, Seon-A,Yang, Hae-Jun,Mun, Seong-Eun,Park, Young-Ho,Jeong, Kang-Jin,Huh, Jae-Won,Lee, Sang-Rae,Kim, Sang-Hyun CSIRO Publishing 2014 Reproduction, fertility, and development Vol.26 No.7
<P> While a critical role of autophagy in mammalian early embryogenesis has been demonstrated, few studies have been conducted regarding the role of autophagy in in vitro maturation (IVM) of immature oocytes. In the present study we investigated the effect of rapamycin, a chemical autophagy inducer, on the nuclear and cytoplasmic maturation of porcine oocytes. Rapamycin treatment led to increased expression of LC3-II, an autophagy marker. Compared with the control group, as well as the 5 and 10 nM rapamycin treatment groups, the rate of MII oocyte production was higher in the 1 nM rapamycin treatment group, indicating improvement in nuclear maturation. In the analyses of cytoplasmic maturation, we found that the level of p34cdc2, a cytoplasmic maturation marker, and the monospermic fertilisation rate were higher in the 1 nM rapamycin treatment group than in the other groups. Moreover, the beneficial effect of 1 nM rapamycin on cytoplasmic maturation of MII oocytes was further evidenced by increases in blastocyst formation rate, total cell number and cell survival. In the blastocyst embryos, anti-apoptotic Bcl-xL transcript levels were elevated in the 1 nM rapamycin-treated group, whereas pro-apoptotic Bax transcript levels were decreased. Collectively, these results suggest that induction of autophagy during IVM contributes to enhancement of the nuclear and cytoplasmic maturation of porcine oocytes. </P>