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乳牛에 있어서 産乳能力에 影響을 미치는 空始期效果에 관한 硏究
池卨夏,申英秀,李學敎,高文石,吳鳳國,孫始煥 서울대학교농과대학농업개발연구소 1988 서울대농학연구지 Vol.13 No.2
This study was carried out to estimate relationships between days open and milk yield at 305 day and according to season of freshing. Data used for this study included a total of 3,266 sets of 305day lactation records of Holstein cows tested milk yield performance in National Animal Breeding Institute from 1971 to 1987. Parity, year at calving and days open showed highly significant (p<0.01) effects on actual and age-corrected milk yields in the first season of refreshing. Days open affected on age-corrected milk yield significantly (p<0.05) and parity and year at calving also effected significanty (p<0.01) on milk record in the second season of refreshing. As days open increased from 20 to 200days, actual and age-corrected milk yield increased from 4,998kg and 5,415kg to 5,290kg and 5,702kg in the frist season, respectively. In the second season, actual and age-corrected milk yields were also affected by period of days open. (Key words : Days open, milk yield)
한우에 있어서 Rosette Inhibition Test 에 의한 조기 임신인자(Early Pregnancy Factor)의 검출
성환후,백광수,고응규,신기준,박용윤,신원집 한국축산학회 1997 한국축산학회지 Vol.39 No.4
Early pregnancy factor(EPF) is one of the pregnancy associated proteins, and it is detected in senun of many pregnant animals shortly after fertilization. The present study was conducted to establish a system of early pregnancy by EPF detection in Hanwoo cows. The EPF activity was measured by the rosette inhibition test on day 15 after artificial insemination or non-insemination. The rate of rosette formation between Hanwoo lymphocytes and sheep red blood cells was significantly(P$lt;0.05) higher compared to that between Hanwoo lymphocytes and goat, or rabbit red blood cells. The rosette formation between lymphocytes suspension and sheep red blood cells with anti-lymphocytes was not significantly(P$lt;0.05) changed until 5∼20 min. of culture, and then decreased dramatically by 30 min. There were significant(P$lt;0.05) differences in the rosette inhibition titer(RIT) between pregnant and non-pregnant Hanwoos on day 15 after artificial insemination. The results indicate that the expression of early pregnancy factor by the rosette inhibition test might be used to diagnosis of early pregnancy in Hanwoo.
디지탈 신호처리기를 사용한 산업용 로봇(SM5)의 실시간 적응제어
장영희,정동연,신행봉,한성현 慶南大學校 附設 工業技術硏究所 1998 硏究論文集 Vol.16 No.-
본 논문에서 제안되는 적응제어시스템의 구조는 기준모델적응제어의 원리를 토대로 직접 리아프노브 방법(direct Lyapunov method)을 적용하여 제어시스템의 안정성 해석 및 적응제어칙을 유도한다. 제어기의 기본구조는 극배치(pole-placement)방법에 의해 설계되는 피이드백 제어기와 역모델(inverse model)을 적용한 시변 피이드포워드 제어기 그리고 공칭작동점(nominal perating point)에 대한 적응보조신호로 구성되는 새로운 구조의 적응제어기를 설계한다. 매니플레이터의 링크 및 관성파라미터의 불확실성, 부하변동으로 인한 매니플에이터의 역학적 특성의 변화, 제어기의 실현시 수반되는 기계적 오차 및 계산시간의 지연 등의 제반 외부 조건의 병화에 대하여 능동적으로 적응할 수 있으므로써 항상 고정도의 견실한 제어성능을 유지됨을 입증함으로써 제안된 제어기의 견실성을 입증한다. 구체적인 실험은 시뮬레이션을 통해 자료를 바탕으로 직접 개발한 TMS320C31 어셈블리 S/W를 FARA SM5 SCARA 형 로보트에 적용시켜 실험 하였다. 실험 결과를 통한 성능의 신뢰성 확인은 FARA SM5 SCARA형 로보트의 기존의 제어기인 PID 제어기와 개발된 적응 제어 알고리즘의 제어성능을 비교 분석하는 방법으로 진행하였다. This paper presents a new approach to the design of adaptive control system using DSPs(TMS320C31) for robotic mampulators to achieve trajectory tracking by the joint angles. Digital signal processors are used in implementing real time adaptive control algorithms to provide an enhanced motion control for robotic manipulators. In the proposed control scheme, adaptation laws are derived from the improved Lyapunov second stability analysis method based on the adaptive model reference control theory. The adaptive controller consists of an adaptive feedforward controller, feedback controller, and PID type time-varying auxillary control elements. The proposed adaptive control scheme is simple in structure, fast in computation, and suitable for implementation of real-time control. Moreover, this scheme does not require an accurate dynamic modeling, nor values of manipulator parameters and payload. Performance of the adaptive controller is illustrated by simulation and experimental results for a SCARA robot(SM5) made in samsung electronics company in Korea.
박승림,김형수,문경호,강준순,이우형,신상락 대한골절학회 1996 대한골절학회지 Vol.9 No.1
Treatments of choice for femoral shaft fracture in adult patients are plate and screws, and intramedullary nailing. Through this active treatment, early motion exercise and early weight bearing can be obtained. However, the frequency of metal failure has increased also and has become a problem in treatment of the fracture. The authors clinically analysed the metal failure in 13 cases after fixation of femoral shaft fracture, during last 7 years since from February 1988 to January 1995. We obtained the following results; 1. The interval between initial operation and metal failure was 6.8 months on average, ranging from 2 to l 3 months, and the most common site of the metal failure was previous fracture site. 2, The most common cause of metal failure was dificiency of medial buttress(8 cases, 61.5%) and the most common method of the treatment was intramedullary fixation with interlocking nail and bone graft. 3. To avoid metal failure, accurate reduction of fracture, adequate immobilization and adequate postoperative management was necessary.
쑥분말 급여가 이유자돈의 생산성과 분의 유해가스 발생량에 미치는 영향
김영민,김재황,김삼철,이문도,신재형,고영두 한국동물자원과학회 2003 한국축산학회지 Vol.45 No.4
This study was conducted to investigate the effect of dietary wormwood powder (Artemisia montana Pampan; WP) supplementation on growing performance and fecal nexious gas cmission in weanling pigs. One hundred and twelve pigs were alloted into four treatments and offered for 4 weeks one of the diets supplemented with 0% (control), 0.5% (0.5), 1.0% (1.0) and 2.0% (2.0) WP. Each treatments has four replicate with 7 pigs per replicate. ADG, ADFI and F/G were improved by 1.0 and 2.0 WP supplementation during 0d ~ 14d feeding. Feed intake of 1.0 WP diet was higher (P<0.05) than any other diet during 15d ~ 28d feeding. But there were no differences among the other treatments in the weight gain and feed conversion. During the whole feeding period, daily weight gain and feed intake of pigs fed 1.0 and 2.0 treatments were higher than those of pigs fed control and 0.5 diet. DM digestibility was significantly (p<0.05) higher in weanling pigs fed 0.5, 1.0 and 2.0 WP than that of the control. The protein digestibility was significantly improved in 1.0 wP treatment and the phosphorus digestibility was improved in 2.0 WP treatment. Excretion of nitrogen and phosphorus was significantly (P<0.05) decreased by 2.0 treatment than control. Emission of fecal ammonia after 48 hours storage in viny1 bag dramatically decreased by all the treatments except control. However, there was no statistical difference in fecal hydrogen sulfide emission among treatments. In conclusion, this study suggested that the dietary 1.0∼2.0 supplementation of WP can improve productivity of pigs decrease fecal NH_(3) and H_(2)S gas emission.
김선영,김준희,김찬영,박정우,신선미,안선영,이민혜,이정아,임미선,전현정 이화여자대학교 간호과학대학 2010 이화간호학회지 Vol.- No.44
Purpose: This study was done to identify the correlation between the menstrual discomforts and dietary habits of young university women in order to provide the basic needs and make improvements on the quality of life for women. Method: The Menstrual Discomfort Questionnaire (MDQ) and Nutrition Diagnosis for Health were the tools used. The participants were 279 female university students in Seoul. Result: Factors related to MDQ were found to be the VAS scores (r=.361, p=.002), menstrual discomfort according to stress consciousness (F=3.756, p=.025), experiences of taking medicine (F= 4.130 p= .043), the types of residential forms (F=6.197, p=.000), recognition of menstrual period (F=5.466, p=.020), eating breakfast, the frequency of carbohydrates intake (F=5.28, p=.006), the frequency of vegetable intake, seaweed and mushrooms (F=4.98, p=.008). As a result of the study, there is a correlation between menstrual discomforts of female university students and dietary habits. Conclusion: In order to decrease the discomforts of the menstrual cycle that usually includes pain and bloating a well-balanced dietary habit is needed. A balance diet includes grain, vegetables, and mushroom should be taken in normal meals. We should confine the dietary habits that form severe menstrual discomfort in people and give them recommendations for ideal dietary habits that would ideally decrease the pain caused by menstruation. Therefore it is necessary that the education program and nursing mediation should be developed as a program that would aid in decreasing menstrual discomforts. In future studies, a similar study with at a larger scale should be conducted with more recommended specified nutritional assessment.
전국 주요 시장에서 시판 중인 진주담치에 함유된 마비성 패독에 관한 조사 연구
이채언,이종태,조규일,정귀원,문덕환,신해림,김공현,배기택,김용완,백낙환 인제대학교 1990 仁濟醫學 Vol.11 No.1
마비성 패독(paralytic shellfish poison)은 강력한 자연계 신경독으로 먹이연쇄를 통해 패류에 축적되며 이를 인간이나 동물이 섭취할 경우 마비성 패류 중독(paralytic shellfish poisoning)을 발생하게 된다. 마비성 패류 중독은 미국, 캐나다 및 일본 등지에서 비교적 호발하고 있으나, 우리나라의 경우 최초의 공식 보고는 1986년 4월 부산지역에서 발생된 집단 중독례로 원인 패류는 진주담치(blue mussel, Mytilus edulis)였다. 본 조사자들은 1989년 4월부터 7월까지 전국 주요 시장 38개소에서 시판 중인 진주담치를 수거하여 mouse bioassay를 이용하여 마비성 패독 함유량을 산정하였기에 보고하고자 한다. Bioassays on paralytic shellfish poison(PSP) in blue mussels(Mytilus edulis) were earned out. The subject matters were collected from 38 markets of 26 places throughout the country, during the period of April to July, 1989. At the time of collection, they were classified into two groups by their sites produced either natural or cultured. As a result, it was identified that two subject matters which were collected from markets of both Boryong and Chinhae contained PSP. The PSP toxicity scores were 47.97㎍/100gm meat in Boryong, 48.84㎍/100gm meat in Chinhae respectively, which are much lower than the level of lethal dose. Hewever it is noticeable that blue mussels in markets contained PSP, which may increase the risk of paralytic shellfish poisoning. From the view point of public health, control measures for preventing paralytic shellfish poisoning are necessary.
밀짚 기본사료 급여시 HCHO 처리 Alfalfa 엽(葉) 분미의 보충이 면양의 반추위액(反芻胃液) 성장에 미치는 영향
강희신,R. H. Weston 한국낙농학회 1985 韓國酪農學會誌 Vol.7 No.2
밀짚 基本飼料로 飼育되는 緬羊에게 HCHO 4.37% 水準의 處理 Alfalfa 葉 粉末 및 無處理 粉末의 補充時 反芻胃液의 性狀을 調査하여 다음과 같은 結果를 얻었다. 1. 處理 Alfalfa 葉 粉末의 補充은 反芻胃內 NH₃態 窒素濃度를 約 17% 相當 減少시키며, 蛋白質의 減成化를 充分히 抑制하고 있음을 알게 되었다. 2. Alfalfa 葉 粉末의 HCHO處理效果는 飼料攝取后 1.5時問 以內 또는 그 直前后까지 持績되나 2.5時間까지는 維持되지 않는다. 3. 反芻胃液中 總酸 및 個別脂肪酸의 濃度는 n-Valerate의 경우 飼料 攝取后 0.5時間 Isovalerate의 경우 2.5時間 境遇를 除外하고 差異가 없다. 卽 n-Valerate는 HCHO處理로서 減少되나 Iso-Valerate는 오히려 增加된다. 4. 反芻胃液中 NH₃-N 및 VFA에 對한 時差別 變異(增減)에 對한 回歸分析의 結果로서 數個의 同歸方程式을 誘導하고 그 可能性에 對하여 討論되었다. To study the ruminal status of the sheep fed the basal diet of wheaten chaff mixture supplemented with and without HCHO treated alfalfa leaf meals at the level of 4.37% of the crude protein content of the meal, four Border Leicester x Merino male sheep fitted with ruminal cannulae were kept in the metabolism cages and fed by using continuously rotating feeder for three hours intervals according to the switch over design. The results obtained were summarized as follows; 1. The ruminal ammonia N concentration (mg N) of sheep supplemented with the HCHO treated alfalfa leaf meal was significantly (p<0.05) reduced by about 17.0% compared to that of untreated group. 2. The reduction in ammonia N concentration was lasted for up to 1.5 hours after feeding with HCHO treated meal supplementation, but this effect was not found by 2.5 hours after feeding. 3. The effect of HCHO treated alfalfa leaf meal supplement on the ind. VFAs of ruminal fluid showed that there was a significant (p<0.05) reduction in the n-valerate concentration at 0.5 hours after feeding, whereas the iso-valerate was increased at 2.5 hours after feeding. 4. Several regression equations were derived from the concentration of ammonia N and volatile fatty acids by hour intervals after feeding. Possible reasons for these were discussed in some details.