Parthenogenetic Activity of Porcine Sperm Factor to In Vìtro Matured tured Porcine Oocyte

Park, Chun_Gyu,Jin-Ki Parκ,Sung-Woo Kim,Ju-Young Lee,Joo-hee Han,Seung-Eun Lee,Kyung-Nye Baek,Won-Chung Chang 한국동물생명공학회(구 한국동물번식학회) 2004 Reproductive & Developmental Biology(Supplement) Vol.28 No.2s

편마비 환자의 건측에 적용한 고유수용성 신경근 촉진법이 환측 근 긴장도에 미치는 영향

우영근,조규행,유은영 한국전문물리치료학회 2002 한국전문물리치료학회지 Vol.9 No.2

The purpose of this study was to investigate the effect of proprioceptive neuromuscular facilitation (PNF) approach on the spasticity of affected side in patients with hemiplegia, Three subjects with hemiplegia participated in this study. In single-subject research design (a multiple baseline across individuals) was employed in this study. The intervention program including PNF to the unaffected side was introduced for 30 minutes each day during each intervention phase. Muscle tone of affected side was measured with Tone Assessment Scale, and active hip abduction distance of affected side was taken with the subject supine. And then the muscle tone and the hip abduction distance were measured again 30 minutes later following the intervention. The results showed that the PNF application had some beneficial effects on both muscle tone and active hip abduction. This results suggests that PNF application to non-paretic limb can be effective in reducing muscle tone and improving hip abduction range on paretic limb in persons with hemiplegia. However, further research is needed to prove the effect of PNF application on functional improvement.

생체내 심근허혈-재관류 모델에서 멜라토닌의 재관류 부정맥에 대한 심근보호작용에 관한 연구

조규종,김원,홍정석,이미우,장성은,오세현,임경수 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: Recently, a few studies demonstrated that melatonin reduced the severity of myocardial reperfusion injuries, such as reperfusion arrhythmias. However, it is uncertain whether the melatonin reduces reperfusion arrhythmias in thus anesthetized animals because results were obtained using isolated hearts. Thus, to see whether melatonin reduces reperfusion arrhythmias in anesthetized animals, we examined the effect of melatonin on the incidence of reperfusion arrhythmias in an anesthetized-cat model of regional ischemia. Method: Adult mongrel male cats(n=30, 2.9∼4.2 kg) were anesthetized under positive-pressure artificial ventilation with room air. The animals of the control group(n=15) were subjected to 20-minute left anterior descending coronary artery(LAD) occlusion followed by abrupt reperfusion. The animals in experimental group(n=15) were divided into two. Group I(n=6) was pretreated with melatonin, 1 mg/kg, before occluding the LAD. Group II(n=9) was pretreated with melatonin, 10 mg/kg. The animals in experimental group were subjected to ischemia/reperfusion insult following drug treatment: melatonin was applied intra-peritoneally for 3 minutes just before LAD coronary artery ligation. The Fisher's exact test was used to compare the data from different animal groups. p<0.05 was considered significant. Results: The incidence of ventricular fibrillation(VF) during the reperfusion phase in group II(pretreated with melatonin, 10 mg) was significantly smaller than that in the control group(p-value = 0.0029). However, no statistically significant difference of VF incidence was found between group I(pretreated with melatonin, 1 mg) and the control group. Conclusion: Employing an anesthetized-cat model of regional cardiac ischemia, we investigated the dose-dependant effects of melatonin on reperfusion-induced arrhythmia. The cats pretreated with 10 mg/kg of melatonin before ischemia had a significantly reduced incidence of lethal reperfusion-induced arrhythmia, but there was no difference between the cats pretreated with 1 mg/kg of melatonin before ischemia and the control group.

절충연산자를 이용한 다목적 비선형 계획법의 대화형 퍼지 의사결정

최규탁,남현우,박재민 慶南專門大學 1997 論文集 Vol.25 No.1

상부 조기 위암 환자의 복강경하 상부 위절제술 3례 경험

조규석,김형철,박경규,이문수,송옥평,임철완,신웅진,주종우,유기원 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Background : The reported incidence of early gastric cancer located in the upper portion of the stomach has been increasing with the recent advances in its diagnosis and screening. Recently, we have successfully performed laparoscopic assisted proximal gastrectomy and gastric tube reconstruction without pyloroplasty on three patients with early gastric carcinoma localized to the upper third of the stomach. We describe our modification of this procedure in this report. Method : After creating an surgical pneumoperitoneum, the stomach was mobilized using laparoscopic coagulating shears. Upper half of the greater curvature and three-quarters of the lesser curvature were then dissected along with regoinal D2 lymphadenectomy. This was followed by a 5 cm, longitudinal mini-laparotomy in the upper abdomen, and the construction of the exteriorized stomach with a gastric tube measuring 20 cm long and 4 cm wide. Reconstruction with an esophagogastrostomy was performed using a circular stapler. Result : No post-operative morbidity or mortality was observed in this small series of patients. The average operative time was 250 minutes (range 220-300 minutes), and the average blood loss was 150 ml (range 90-180 ml). The mean number of lymph nodes harvested during these laparoscopic proximal gastrectomies was 24 nodes (range 22-25 lymph nodes). The average postoperative hospital stays was 7.5 days (range 7-8 days). Conclusion : Our technique of laparoscopic assisted proximal gastrectomy and gastric tube reconstruction without phloroplasty offers a minimally invasive technique with the potential of impoving the post-operative quality of life patients with an early-stage proximal gastric cancer.

시멘트 및 고성능AE감수제가 고유동콘크리트의 유동특성에 미치는 효과에 관한 실험적 연구

박선규,반성수,우영제,김규용,김무한 忠南大學校 産業技術硏究所 1998 산업기술연구논문집 Vol.13 No.1

The fluidity of high flowing concrete can be affected by numerous parameters which characterize either the cement or the admixture. The reactivity of a cement as determined by its chemical compositions (especially its C₃A content), its fineness and its content in sulfates and alkalies obviously plays a key role in rheology of high flowing concrete in fresh state. Specific properties of high range water reducing AE agent used to enhance the workability of high flowing concrete also exert important influence. The purpose of this experimental study is to investigate and analyze the effect of cement and high range water reducing AE agent in fluidity, setting, compressive strength of high flowing concrete. As a result, we found that fluidity of high flowing concrete is affected greatly by kind of cement and high range water reducing AE agent, also, there is harmonic character between high belite cement and polycarbonic acid high range water reducing AE agent.

광파이버 변위 센서를 이용한 자기베어링 계의 부상 제어

강종규,신우철,송관의,홍준희 충남대학교 공업교육연구소 2003 論文集 Vol.26 No.1

Five expensive sensors are necessary to control a magnetic bearing system. The sensor price rate of magnetic bearing system is high. So it is necessary that cheap and good sensor is developed. The optical fiber displacement sensor is adaptive to satisfy this condition. We can design magnetically suspended spindle based on static characteristic of optical fiber displacement sensor developed. The controller can be designed by decoupled feedback PD. Therefore, it is simpler than any other controller comparatively.

생물 교육의 다양성 단원에 활용을 위한 경남도내 자생하는 영지버섯(Ganoderma)의 조사

정우규,성민웅 慶尙大學校 기초과학연구소 1989 基礎科學硏究所報 Vol.5 No.-

1985년 8월부터 1988년 8월까지 경상남도내 자생영지(Ganoderma)의 몇가지를 조사한 결과는 다음과 같다. 적지, 흑지, 황지, 백지의 4종류의 영지가 발견되었다. 이들 중에서 적지가 가장 많이 발견되고 백지는 매우 귀하게 발견되었고 자지와 청지는 발견되지 않았다. 주요한 숙주식물은 참나무속 식물들이었다. 영지버섯을 초등부터 고등학교까지 생물교과서에서는 기재되지 않은 종이었으나 생물의 다양성 단원교육에서 교육 자료로 활용가치가 높으므로 이의 활용이 요망된다고 생각된다. Gonoderma growing naturally in Kyo˘ngsangnam-do was surveyed during the 1985 to 1988. Four kinds of G. lucidum such as red, black, yellow, and white were found. Among them, red G. lucidum was mostly found, while white G. lucidum was very rare. Purplish and blue G. lucidum was not found. Their shapes were round, kidney or other types. The main host trees were genus Quercus. G. lucidum was widly distributed in Kyo˘ngsnagnam-do. Fungi appearing in the biology text books of the elementary and secondary school was consisted of 1 phylum, 4 classes, 6 orders, 9 families, 10 genera, and 11 species. G. lucidum was not recorded in the biology text books. But this species can be used as a teaching material for application in the diversity unit of biology education.

인버터 구동 유도전동기의 가창소음 저감을 위한 새로운 펄스폭 변조기법

최규하,신우석,함연창 建國大學校 附設 産業技術硏究所 1992 논문집 Vol.17 No.-

The PWM inverter system are widely used to control the induction motor, and their switching frequency rises to the higher for better performances. But the upper should be limited for safe operation as well as switching loss reduction in the power transistor inverters. This makes the level of the audible noise much increased. In order to overcome such noise problem, a new PWM control technique is proposed in the power transistor inverters, of which carrier frequency is to change a according to the slope of the sine wave reference signal. As a result the frequency spectra are improved and hence the audible noise couble be reduced greatly.

Bryophyllum 3種의 氣孔發生에 關한 硏究

鄭宇珪,金鼎錫 慶尙大學校 1986 論文集 Vol.25 No.2

Bryophyllum 屬의 3種(B. crenatum, B. diagremontiana, B. tubiflorum)의 잎, 잎의 구슬눈 및 꽃잎에서 表皮構造와 氣孔의 發生을 顯微鏡으로 觀察한 結果는 다음과 같다. 表皮細胞는 各種과 各器官에서 공통적으로 多角形, 等値徑形 또는 伸張形이었다. 세포벽은 弓形 또는 波狀形이었다. 부세포벽은 얇고 대부분이 弓形이었다. 잎과 잎의 구슬눈에서 氣孔의 數는 얇은 잎을 가진 일반식물에서 보다 적었고 잎의 兩面에 分布하는 氣孔數의 차이도 일반식물의 잎의 양면에서 氣孔數보다 적었다. 성숙한 氣孔의 主類型은 螺旋型이었다. 氣孔의 發生學的 類型은 各種과 各器官에서 공통적으로 全中立形成螺旋型이었고, 이 類型은 孔邊母細胞의 分裂角에 따라 全中立形成平行螺旋型, 全中立形成不規則螺旋型 및 全中立形成直交螺旋型으로 細分되었다. 더물게 全中立形成不均等型, 全中立形成重四副細胞型 및 全中立形成四副細胞型(cotetra-ansio-eumesogenous)이 管東植物에서는 처음으로 觀察되었다. The epidermal structure and stomatal ontogeny on the epidermis of the leaves, epiphyllous buds and petals of Bryophyllum(B . diagremontiana, B. tubiflorum) were described. The epidermal cells were polygonal, isodiametric or elongated cells. The cells were arched or sinous. The subsidiary cell walls were thin and mostly arched. The number of stomata in the leaves and epiphyllous buds had relatively fewer stomata than thin-leaved common plants. The difference of stomatal number on two surfaces of the leaves was relatively fewer than that of common plants. The main type of mature stomata was helicocytic type. The ontogenetic type of stomata was mainly helico-eumesogenous type. This type was subdivided into three subtypes such as parahelico-eumesogenous, anomohelico-eumesogenous and diahelico-eumesogenous stomata on the base of the division angle of the guard mother cell. Rarely, aniso-eumesogenous, duplotetra-eumesogenous and tetra-eumesogenous types were found. The cotetra-aniso-eumesogenous type in the leaf of B. diagremontiana was firstly observed in the vascular plants.