Application of Artificial Insemination Technology for Dairy Breeding in Mongolia

Hyun‐Tae Jo,Jong‐In Jin,Seong‐Su Kim,Byung‐Hyun Choi,Tumor Baldan,Jung‐Gyu Lee,Yun‐Shik Kim,Sam‐Churl Kim,Il‐Keun Kong 한국동물생명공학회(구 한국동물번식학회) 2011 발생공학 국제심포지엄 및 학술대회 Vol.2011 No.1

This study was focused on improvement of milk production in Mongolia dairy industry by artificial insemination (AI) technology, of which was supported from ODA project of KOICA in Republic of Korea. The study was started from January 2009 to present and 3rd years in this year. So, all data, especially synchronization and pregnancy of dairy cows (Holstein) will be summarized in final result in this year. For synchronization, total 81 dairy cows selected from 4 private farms that were 38, 30, 8 and 5 in Undarmal milk, Onjin (Enkhbayer), Jargalant, and BRM School, respectively. All the dairy cows were injected intramuscular (IM) of 5 ml PGF2α in the vulva and detected estrus 2 to 3 days after PGF2α injection. Total 78 out of 81 dairy cows (96.3%) were detected estrus by only 1 time injection of PGF2α. The dairy cows that were induced estrus, inseminated with 0.5 ml dairy frozen semen by conventional AI techniques. The pregnancy diagnosis of the AI dairy cows was detected by uterus palpation after 60 days of insemination. Total 75 from 78 inseminated dairy cows (90.1%) were diagnosis pregnant. The estrus induction and pregnant rate were very effective using PGF2α injection and conventional AI techniques in Mongolia dairy cow. The results indicated that AI after estrus induction in Mongolia dairy cows could be applied to dairy breeding technology to improve the breeding efficiency and milk production.

퍼지 전문가 시스템을 이용한 BLDC 전동기의 자동조정 PID 속도제어에 관한 연구

진광식,윤태성,권세현 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-

This paper proposes the rule-based expert system with auto-turning of PID controller gain and shows the efficiency of fuzzy expert system for the speed control of BLDC motor. The PID controller gain tuned using RZN(refined ZN) formula to initial tuning and fuzzy expert system to subsequent tuning. The fuzzy expert PID control method proposed in this paper results in the reduction of overshoot, the rapid response and the robustness for disturbances and noise.

Thiamine결핍 유도후 쥐 전뇌의 성상교세포 Glial Fibrillary Acidic Protein(GFAP) 면역화학 활성도에 대한 변화

김승현,김희태,김주한,김명호,황세진,김명권,백태경 대한신경과학회 1999 대한신경과학회지 Vol.17 No.1

콘크리트 構造物의 混合모드 龜裂傳播모델(第1報)

陳致燮,張熙碩,崔顯泰,嚴長燮 부산대학교 공과대학 1989 硏究報告 Vol.38 No.-

This paper attempts to extract the crack tip stress intensity factors and to make a crack propagation model under mixed mode, from the finite element analysis of the concrete structures. In finite element analysis, all elements are initially assumed to be conventional quadratic isoparametric elements and are replaced by 6 node triangular singularity elements in the crack tip zone only. The stress intensity factors and the angle of propagation are carried out by displacement correlation technique and maximum circumferential tensile stress theory respectively. At the first part in a series of two papers, some numerical examples about the concrete SENB and DISK are presented to illustrate the practical effectiveness of the technique.

스테레오 비젼과 레이저포인터를 이용한 거리 측정 시스템

조현,진광식,윤태성,이용중 國立 昌原大學校 産業技術硏究所 1999 産技硏論文集 Vol.13 No.-

In this paper, we studied on the environment map building for the autonomous mobile robot navigation using the vergence controllable stereo camera system. First of all, distance measurements are necessary to build the environment map. So, we present the distance measurement method using the stereo camera system and a laser pointer. To measure the distance using the stereo camera system, finding the common points in the left and the right images are needed. In this study, we use a laser pointer to solve this problem. Secondly, we present the method how to obtain the 3-dimension position information using 3-D geometric schematic of the stereo camera and the measured distance information. This information is essential to the mobile robot navigation. Finally, we prove the presented method experimentally. An image of a corridor is taken by the stereo camera. The door and pillar in this image are landmarks. Therefore, we find such landmarks in the image and measure the 3-D position information for those landmarks. And the, we construct the environment map for the navigation of the mobile robot.

저혈청 배지에서 인간 전골수세포(HL-60)를 이용한 tPA 생산과 세포사멸기작에 관한 연구

김현구,성기돈,김태호,안주희,함문선,박진서,이현용 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.1

tPA 생산과 세포 사멸의 연구를 하기 위해서 인간 전골수세포가 배양되었다. 연속 관류 배양하에서 최대 tPA 생산량은 324 ng/ml이며 최대 세포 농도는 5.27×10 exp (6) cells/ml였다. Phorbol ester를 넣었을 때 tPA 생산량은 420 ng/ml까지 향상되었다. 형광 현미경으로 관찰했을 때, apoptosis는 세포 배양 초기부터 중반까지 우세했고 빠른 교반 속도에서도 우세했다. 그러나 necrosis는 세포배양 말기와 동결된 세포가 해동 되었을 때 우세했다. HL-60 was cultivated to produce tPA (tissue-type plasminogen activator) and study the mechanism of cell death. Maximum cell density and tPA production were obtained as 5.27×10 exp (6) cells/ml and 324 ng/ml, respectively under perfusion cultivation. tPA production was enhanced to 420 ng/ml in adding 160 nM of phorbol ester. The cells were gradually differentiated to granulocytes rather than proliferation. By Fluorescent microscope, apoptosis was prevailed except the death phase and in high agitation speed, but necrosis was prevailed in thawed cells and during the latter periods of the cultivation. It was also proved that tPA was most produced in apoptosis. To obtain higher tPA productivity, the cells must be maintained in apoptosis, not necrosis phase when the cells were dying.

Pyridostigmine과 Neostigmine의 골격근이완계 길항 효과에 관한 연구

우현제,신용섭,김태관,이정은,최세진 충남대학교 의과대학 지역사회의학연구소 1986 충남의대잡지 Vol.13 No.2

This present study was undertaken to observe the effects of pyridostigmine and neostigmine of heart rate and it's antagonistic effect on pancuronium in 62 patients during general anesthesia. We obserived the effect of pyridostigmine and neostigmine with atropine and glycopyrrolate of heart rate, appearance of arrhythmia, time required for returning of spontaneous breath an sustained tetanic response and effect on the amount of secretion in oral cavity and trachea. The result are as follows: 1. The incidence of bradycardia was the highest in the group of atropine and neostigmine i. v. administration together, and the lowest in the group of glycopyrrolate and pyridostigmine i. v. administration together. 2. The incidence of tachycardia was the highest in the group of atropine and pyridostigmine i. v. adminstration together, and the least in the group of glycopyrrolate and pyridostigmine i. v. administration together. 3. Among the experimental cases, only one showed arrhythmia which is PVD. 4. The time required for returning of spontaneous respiration was 4.6-6.1 minutes range in all groups. 5. The group of glycopyrrolate administrated showed the greates antisialogue effect.

최대운동부하후 회복기중의 심박수·산소섭취량 변화와 유산소성 운동능력과의 관계 분석

김기진,박현,전태원 師範大學 體育硏究所 1988 서울大學校 體育硏究所論集 Vol.9 No.1

For the evaluation of cardiovascular function, aerobic capacity with VO₂max and AT(anaerobic threshold)have been used as a critical parameter. Also we expect that parameter during recovery can be used as a good one. The purpose of this study was to identify the relationship between maximal or submaximal aerobic capacity and the recovery rate of them. We studied with twenty seven subjects: 7 judoists, 10 long distance runners and 10 non-athletes. They were undergone a continuous incremented treadmill test from rest to all-out. Respiratory gas of each subjects was analyzed by using an automated respiratory gas analyzer, Ergo-Oxyscreen System (Erich-Jaeger Co.). As the data of heart rate, oxygen uptake at rest and during recovery made the log linear model with time, the gradient of recovery rate was calculated by the equation of simple regression with the time as independent variable. That equation is as follows; y=A+B.e?? ? y:HR or VO₂ ? A:expected value at rest ? B:maximum increment ? c:recovery rate The results of this study was; 1. There was a significant difference as the order of long distance runners, judoists, non-athletes' HR at rest, but there was no difference in the maximal HR. 2. Long distance runners had higher level of VO₂max(84.83ml/kg) and AT(80.03%) than the other two groups. 3. In the long distance runners group, the phase of VO₂recovery showed significant correlation with the other factors. 4. In judoists group, the phase of VO₂max recovery had significant correlation -0.79(p<0.05) with the maximal HR. 5. In all subjects, significant correlation was showed between AT, HR at rest and recovery of VO₂. In brief, maximal or submaximal aerobic capacity(VO₂max, AT etc.) had no correlation with the phase of HR recovery, but significant correlation with the phase of VO₂recovery in athletes. The results indicated that the recovery rate of oxygen uptake could be a critical index for evaluating the aerobic capacity.

난류 경계층 흐름내에서 발달되는 소음원의 측정

이진,장태현,김상윤 경남대학교 신소재연구소 1992 論文集 Vol.2 No.-

난류 계류층 흐름에 의하여 발생되는 소음원인 벽면 압력 난동의 실험적 연구를 수행하였다. 마이크론폰의 공간 분해능과 풍동의 음향학적 잡음은 각각 핀홀 시스템과 그리고 입력 난동 신호와 음향학적 잡음의 상관 관계를 통하여 개선되었다. 실험 결과는 Corcos 모델의 유선 및 종방향 감쇠 계수의 변화는 각각 평균 구배와 익형의 종횡비에 기인한다는 것을 보여주고 있다. Measurement of wall pressure fluctuations, as a noise sources, generated by a turbulent boundary layer flow have been carried out. Two experimental difficulties, spatial resolution of a microphone and acoustical back-ground noise, are improved by pinhole apertures and signal correlations between the pressure fluctuations and the acoustical back-ground noise. We show that, in Corcos model, the variation of streamwise and lateral attenuation coefficients γ₁γ₃ are due to mean pressure gradients and aspect ratio of the airfoil respectively.

정사각형 단면을 갖는 90° 급곡관 내의 유동 현상에 관한 실험적 연구

이진,장태현,김상윤 경남대학교 신소재연구소 1994 論文集 Vol.4 No.-

본 연구에서는 반경비가 3.5인 정사각형 단면을 가지는 90˚ 급곡관내의 유동 현상에 대하여 에리놀즈수가 4.9×10⁴일 때 주 유동방향 및 반경방향의 속도와 정압을 측정하였다. 만곡된 덕트내에서 일어나는 유동은 원심력과 반경방향 압력구배의 불균형으로 인하여 유동의 편중현상을 보이고 있다. Two orthogonal components of velocity and static pressure have been measured in a square-sectioned, 90 degree bend of 3.5 radius ratio for Reynolds numbers of 4.9×10⁴. In general observation, flow in a curved duct is characterized by acceleration or deceleration of the flows which are driven mainly by centrifugal forces and radial pressure gradients imbalance.