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        • KCI등재

          Effects of vitamin E and selenium (Selevit) on the orchidectomized rats

          전승기 한국동물위생학회 2011 韓國家畜衛生學會誌 Vol.34 No.1

          The present study was devised to determine the effects of body weight, organ weight, hematological values and biochemical parameters by vitamin E and selenium (Selevit) on the Orch rats. The animals were divided into 4 groups. Intact group (n=10) received no treatment and operation. Sham group (n=10) received only sham operation and no treatment. Orch group received operation and no treatment. Orch+Selevit received operation and Selevit. The body weights of each group increased, but that of the Orch+Selevit group were significantly lower than in all the other groups. There were significant differences (P<0.001) of body weights between Orch+Selevit group and all the other groups. Also, organ weights such as heart, liver, spleen and kidney were measured. The heart weights were significantly lower (P<0.001) in the Orch+Selevit group than in Intact and Sham group. The liver weights in the Orch+Selevit group showed significant differences (P<0.001) in comparison with those in the Intact and Sham groups. The kidney weights in the Orch+Selevit group were significantly different (P<0.01, P<0.001) in comparison with those in all the other groups. On the other hand, there were no significant differences in the organ weights of the spleen between the Orch+Selevit groups and any other groups. The number of WBC was significantly higher (P<0.05) in the Orch+Selevit group than in the all other groups. The hematological values of RBC, MCV, MCH and MCHC resulted in no significant differences in any groups. The concentrations of serum total protein, albumin and alkaline phosphatase increased significantly (P<0.05, P<0.01) in the Orch+Selevit group as compared to that in the Orch group. However, there were no significant differences in AST and ALT in any other groups. We conclude that Selevit was significantly decreased the body weight in the orchidectomized rats. Our findings suggest that Selevit may influence the process of lipid packaging and absorption in the orchidectomized rats.

        • KCI등재

          만성설사를 보이는 생후 4개월령의 한우 암컷 송아지에서 도체탕의 치료효과

          전승기,김남수 대한수의학회 2007 大韓獸醫學會誌 Vol.47 No.2

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          This study was carried out to evaluate the effects of Dochetang for the treatment of chronic diarrhea in a 4 months-old-female Korean native calf. The calf was presented to the Wow Animal Clinic, Iksan with the history of chronic diarrhea for several weeks. The feces test did not reveal the presence of the parasites or microbes causing diarrhea in calf. The blood test was also negative to the virus that causes of diarrhea in calf. Adminstration of parenteral antibiotics resulted in improvement of the condition temporarily but diarrhea was recurred again after 2-3 weeks. Then the calf was treated with Dochetang administered orally once a day in an empty stomach for 15 days. Feces was significantly reduced in moisture on 7 days after initial treatment. On 9 days after initial treatment, the calf had normal appetite and defecation in physiological conditions. Blood samples were collected before administration and on 1, 2 and 3 weeks after initial administration of Dochetang for hematology and biochemistry. A significantly differences were observed in the white blood cell (WBC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), albumin (ALB), glutamic pyrubic transaminase (GPT), inorganic phosphorus (IP) and magnesium (Mg), while no significant differences were seen in the red blood cell (RBC), hemoglobin (Hb), hematocrit (HCT), platelet (PLT), glucose (Glu), total protein (T-pro), glutamic oxaloacetic transaminase (GOT), blood urea nitrogen (BUN) and creatine (CRE). This study suggests that Dochetang administration can be a successful alternative therapeutic agent in instead of antibiotics for the treatment of chronic diarrhea in calves.

        • SCOPUSKCI등재

          생리 · 약리학 : 산란계 ( Dakalbwarren ) 의 연령에 따른 myeloperoxidase 와 leukocyte peroxidase 활성에 관한 연구

          전승기,강창원,이호일 대한수의학회 1994 大韓獸醫學會誌 Vol.34 No.3

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

        • KCI등재

          Effects of L-carnitine on the orchidectomized rats

          전승기 한국동물위생학회 2011 韓國家畜衛生學會誌 Vol.34 No.1

          This was conducted to determine the effects of body weight, organ weight, hematological values and biochemical parameters by L-carnitine (Carn) on the orchidectomized (Orch) rats. The animals were divided into 4 groups. Intact group (n=10) received no treatment and operation. Sham group (n=10) received only sham operation and no treatment. Orch group received operation and no treatment. Orch+Carn received operation and L-carnitine. The body weights of each group increased, but that of the Orch+Carn group were significantly lower than those in all the other groups. There were significant differences (P<0.05, P<0.001) of body weights between Orch+Carn group and all the other groups. Also, organ weights such as heart, liver, spleen and kidney were measured. The heart weights were significantly lower (P<0.001) in the Orch+Carn group than those in Intact and Sham groups, respectively. The weights of liver and kidney in the Orch+Carn group showed significant differences (P<0.001) in comparison with those in all the other groups. Also, the spleen weights were significantly lower (P<0.05) in the Orch+Carn group than those in Intact and Sham groups, respectively. The hematological values of mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) were significant differences (P<0.05, P<0.01, P<0.001) in comparison with those in all the other groups. On the other hand, the hematological values of white blood cell (WBC), red blood cell (RBC) and mean corpuscular hemoglobin concentration (MCHC) resulted in no significant differences in any other groups. The concentrations of total cholesterol (T-chol), triglyceride (TG) and high density lipoprotein (HDL) decreased significantly (P<0.05) in the Orch+Carn group as compared to those in the Orch group. We conclude that L-carnitine was significantly decreased the body weight in the orchidectomized rats. Our findings suggest that L-carnitine may influence the process of lipid packaging and absorption in the orchidectomized rats.

        • KCI등재

          Effects of testosterone on the orchidectomized rats

          전승기 한국동물위생학회 2010 韓國家畜衛生學會誌 Vol.33 No.4

          The aim of this study was to determine the changes of body weight, organ weight, hematological values and biochemical parameters by testosterone (Testos) on the orchidectomized (Orch) rats. The animals were divided into 4 groups. Intact group (n=10) received no treatment and operation. Sham group (n=10)received only sham operation and no treatment. Orch group received operation and no treatment. Orch+Testos received operation and testosterone. The body weights of each group increased, but that of Orch+Testos group was significantly lower in Orch+Testos group than in all the other groups. There were significant differences (P⁄0.05, P⁄0.001) of body weights between Orch+Testos group and all the other groups. Also, organ weights such as heart, liver, spleen and kidney were measured. The heart weights were significantly lower (P⁄0.001) in the Orch+Testos group than in all the other groups. The liver weights in the Orch+Testos group were significantly differences in comparison with those in the Sham (P<0.001) and Orch group (P⁄0.05). On the other hand, there were no significantly differences in the organ weights of spleen and kidney between the Orch+Testos group and the any other groups. The hematological values of white blood cell (WBC), red blood cell (RBC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC) were no significant differences in any other groups. The concentrations of serum total protein and albumin increased significantly (P⁄0.05) in the Orch+Testos group as compared to that in the Orch group. However, there were no significant differences in Ca, IP and Mg in any other groups. We conclude that testosterone was significantly decreased the body weight in the orchidectomized rats. Our findings suggest that testosterone may influence the process of lipid packaging and absorption in the orchidectomized rats.

        • KCI등재

          젖소송아지에서 ELISA를 이용한 소 바이러스성 설사병 바이러스 검출률

          전승기,김남수,Chon, Seung-Ki,Kim, Nam-Soo 한국임상수의학회 2007 한국임상수의학회지 Vol.24 No.2

          The aim of this study was to detect bovine viral diarrhea virus (BVDV) from calves in Chonbuk province. Blood samples were taken from ninety-two dairy calves. Capture enzyme-linked immunosorbent assay (ELISA) was used to detect BVDV. BVDV were detected in eight out of ninety-two (8.6%) dairy calves. BVDV were detected in one of twenty five of female calves and one of twenty three of male calves of 4 months old, whereas in the 5 months age group, BVDV were detected in low of twenty three of female calves and two of twenty one of male calves. There were no significant differences (p>0.05) in the detection rate of BVDV on the basis of sex. On the other hand, ages of calves had significant differences (p<0.05) on the prevalence of BVDV.

        • KCI등재

          PTWS를 적용한 웨어러블 AMOLED용 고집적화3-채널 DC-DC 변환기 설계

          전승기,이희진,최호용 한국전기전자학회 2019 전기전자학회논문지 Vol.23 No.3

          본 논문에서는 PTWS 방식을 이용한 고집적화된 AMOLED용 3-채널 DC-DC 변환기의 설계한다. 양의 전압 는 경부하에서 효율을 제고하기 위해 SPWM 듀얼모드와 PTWS 방식을 적용한 부스트 변환기로 설계한다. 음의 전압   는 전력손실을 줄이기 위해 PSM 방식을 적용한 0.5x 인버팅 차지펌프를 이용해 설계하고, 추가적인 전압    는 LDO를 이용하여설계한다. 제안된 DC-DC 변환기는 0.18㎛ BCDMOS 공정을 사용하여 시뮬레이션을 한 결과 부하전류 1mA~70mA에서 전력효율 56.9%~90.2%를 가지고, 양의 전압에서 최대 5mV의 출력 리플을 가졌다. In this paper, a highly integrated 3-channel DC-DC converter is designed using power transistor width scaling(PTWS). For positive voltage,  , a boost converter is designed using the set-time variable pulse width modultaion(SPWM) dual-mode and PTWS to improve efficiency at light load. For negative voltage,   , a 0.5 x regulatedinverting charge pump is designed with pulse skipping modulation (PSM) controller to reduce power consumption, andfor an additional positive voltage,    , a LDO circuit is designed. The proposed DC-DC converter has been designedusing a 0.18㎛ BCDMOS process. Simulation results show that the proposed converter has power efficiency of 56%~90%for load current range of 1 mA~70 mA and output ripple voltage less than 5 mV at positive voltage.

        • 국내 육계 산업 실태 및 발전 방향

          전승기,장경만 한국가금학회 2001 한국가금학회 정기총회 및 학술발표회 Vol.18 No.-

          WTO 체제하에서 육계경영의 장래가 지극히 불투명하고 우려하는 가운데 금후의 경영확대 여부에 대해서는 확대를 계획하고 있는 농가의 비율은 소규모, 중규모가 많았으며 대규모경영은 현상유지를 나타내고 있었다. 투자 계획 중에서 구체적으로는 「계분 처리시설 확충」 「자동화 설비」 「완전계사」외에 규모확대를 위한 계사확장 등이 있으며 그 밖에 발전기, 단열시설, 환풍기보강, 온조센서 등 계사 내부시설을 강화하려고 하는 농장이 많았다. 신기술의 도입계획 중에서 열거해보면 자가발효사료 생산이용을 고려 중, 깔짚의 재활용, 생산비 절감 기법도입, 무창계사, 계사의 위생관리기술 등 각 농장의 경영자 자신의 과제를 해결해 보려는 노력이 엿보였다. Survey questionnaires were collected. from broiler farmers and analysed in this study to find out ways to respond to the open international chicken trades-chicken marketing plan and market price control. Broiler farm production and management were analyzed and it was found that number of chicken produced. per farm was related. to systematic and strategic level of farming such as chicken housing, technical problems, and cost of production.

        • AMOLED 디스플레이용 3-채널 DC-DC 변환기 설계

          전승기(Seung-Ki Jeon),김찬유(Chan-You Kim),김학윤(Hak-Yoon Kim),최호용(Ho-Yong Choi) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.11

          In this paper, we design a highly integrated 3-channel DC-DC converter. Two channel, a positive voltage VPOS and a negative voltage VNEG, are designed for two supply voltages of AMOLED display. For positive voltage, VPOS, a boost converter followed by a LDO (Low Dropout) is designed using PSM/PWM dual mode to minimize power dissipation and decrease output voltage ripple. For a negative voltage, VNEG, a 0.5 x regulated inverting charge pump is designed to decrease size and power dissipation. For an additional positive voltage, V A VDD , a LDO is designed using an error amplifier to drive another fixed positive voltage. The proposed circuit has been designed using a 0.18㎛ BCDMOS process. Simulation results show that our integrated power supply has power efficiency of 57% ~ 89% for load current range of 1 mA ~ 70 mA and output voltage ripple less than 20 mV.

        • KCI등재
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