• Title/Summary/Keyword: Chang-po

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Percutaneous Transcatheter Pericardiotomy of Pericardial Effusion in a Miniature Poodle Dog (심한 심낭수 삼출이 있는 푸들개의 카테터를 통한 부분적 심낭절개술)

  • Han, Suk-Hee;Hyun, Chang-Baig
    • Journal of Veterinary Clinics
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    • v.27 no.6
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    • pp.729-734
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    • 2010
  • An 11-year old, intact female Poodle (weighing 2.3 kg) was referred with signs of consistent coughing, dyspnea, poor exercise tolerance, and anorexia. Diagnostic imaging and laboratory studies revealed idiopathic hemorrhagic pericardial effusion complicated with ISACHC Ib stage of chronic mitral valvular degeneration. Percutaneous transcatheter pericardiotomy (PTP) was performed at the right precordium using alligator forceps with fluoroscopic guidance. Immediately after PTP, electrocardiogram and echocardiogram showed dramatic improvement of cardiac performance. Patient was released with the prescription of furosemide (1 mg/kg, bid, PO), enalapril (0.5 mg/kg, bid, PO), cephradine (20 mg/kg, bid, PO) for mild mitral regurgitation and post-management of infection. Diagnostic studies performed at 2 weeks after PTP revealed no further accumulation of pericardial effusion and improvement of clinical signs. The dog is currently medicated with enalapril and monitored regularly.

Enhancement of cell-mediated immunity by administration of plasma protein in pigs 1. Proportion of leukocyte subpopulations and cells expressing adhesion molecules in peripheral blood (돼지에서 plasma protein에 의한 세포성면역 증진효과에 관한 연구 1. 혈액내 백혈구 아군 및 세포별 분포율)

  • Yang, Chang-kun;Kim, Soon-jae;Moon, Jin-san;Jung, Suk-chan;Park, Yong-ho
    • Korean Journal of Veterinary Research
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    • v.34 no.2
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    • pp.275-286
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    • 1994
  • Plasma protein which has been known as one of nonspecific immunostimulators was added to feedstuff to examine its effect on the enhancement of cellular immune response in porcine immune system. A total of 40 piglets, 20 male and 20 female each, were fed for 30 days with or without plasma protein. The peripheral blood were collected and analyzed for the investigation of leukocyte subpopulations and their activities by using a panel of monoclonal antibodies specific to porcine leukocyte differentiation antigens and flow cytometry. The results obtained as follows. 1. Total weight gain, daily feed intake and feed conversion rate for 10 days were significantly improved to 56%, 20% and 22% in the piglets fed plasma protein, respectively. 2. A significant increase in N (null or non T/non B) cells was also noticed. Leukocyte proportion from piglets fed plasma protein was 20.2-24.7%, otherwise that from piglets fed without plasma protein was 12.3-13.4%, respectively. 3. A significant increase in the proportion of B cells and cells expressing poCD1 was not found in piglets fed plasma protein. 4. Reaction with monoclonal antibodies specific to adhesion molecules, poCD11a, poCD11b, poCD44 and poCD45A and poCD45B, has shown that leukocyte subpopulation from piglets fed plasma protein did not significantly higher than that from piglets fed without plasma protein. 5. Total proportion of granulocytes and monocytes was about 50% in both group and the proportion after treated with Hypaque/Ficoll was 2.7% and 5.8% in each group, respectively.

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A Study on Quadcopter Consisting of Dual Li-Po Battery Charging by Solar Cell in the Engineering Education Completed a Senier Project Work at the University (공학교육 이수체계에서 대학 졸업 작품용 이중 Li-Po 전원 사용 태양전지 충전 쿼드콥터 구성에 관한 연구)

  • Yoon, Seong-Geun;Kim, Kyung-Bin;Chang, Eun-Young
    • Journal of Practical Engineering Education
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    • v.8 no.1
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    • pp.9-14
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    • 2016
  • Depending on the college graduation project and graduation thesis regulations for the certification and graduation requirements, the quadcopter acting as a Li-Po battery that charges by solar energy are proposed a design method and improvements in theory. Quadcopter posture is balanced and confirmed by the position sensor, through a PID (Proportional Integral Differential) control. Battery switching circuit is composed of two Li-Po battery. Driving the quadcopter as one battery, and does not use other battery is charged by solar energy. A battery switching circuit is fabricated in a manner that uses two types of relays. Even if completely not charged to the battery is being driven a certain switch by the battery charging voltage from time to time, it proposes a method for increasing the endurance time and range.

Antibacterial Properties of $Ag_2-Li_2O-CaO-TiO_2-P_2O_5$Porous Class Ceramics ($Ag_2-Li_2O-CaO-TiO_2-P_2O_5$계의 다공성 글라스 세라믹스의 항균 특성)

  • Kang, Won-Ho;Yoon, Young-Jin;Lee, Yong-Soo;Hong, Bum-Soo;Yeom, Gon;Kim, Chang-Soo;Seok, Man-Kyun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.1 no.1
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    • pp.27-32
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    • 2000
  • Porous glass ceramics composed of $Ag_2-Li_2O-CaO-TiO_2-P_2O_5$-CaO with 0.05-1.5 mole CuO were prepared by melting and 2 step heat treatment for nucleation at $610^{\circ}C$ and crystallization at $840^{\circ}C$. $\beta$-$Ca_3(PO_4)_2$crystal phase was selectively leached out in 1N-HC1 solution for 3 days, leaving $AgTi_2(PO_4)_3$and $LiTi_2(PO_4)_3$crystal phases. Antibacterial effects and characterizations of the porous glass ceramics were investigated. Staphylococcus aureus and Salmonella typhi bacteroa were used in this study. It was found that the resultant porous glass ceramics show excellent bacteriostatic properties.

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Relationship Between the Dose of Clodronate and Serum Level of Alkaline Phosphatase, Calcium, and Phosphate During Orthodontic Tooth Movement

  • Choi, Josefina;Baek, Seung-Hak;Chang, Young-Il
    • Journal of Korean Dental Science
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    • v.3 no.1
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    • pp.32-38
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    • 2010
  • Objective : To evaluate the relationship between the dose of Clodronate and serum level of alkaline phosphatase (ALP), calcium (Ca), and phosphate (PO4) during orthodontic tooth movement MaterialS and MethodS: A total of 18 sex-matched Wistar rats (weight=180~230g, mean age=8 weeks) were allocated into the 2.5mM Clodronate (2.5C) group, 10mM Clodronate (10C) group, or control group (n=6 for each group). After the application of a nickel-titanium closed coil spring (force of 60g) between the upper central incisors and first molars (UFM), 2.5C, 10C, or saline was injected every third day into the subperiosteum of the alveolar bone adjacent to UFM for the experimental and control groups. The animals were sacrificed 17 days later. Trunk blood was quickly collected into a heparinized tube and centrifuged at 2,000 rpm for 20 min. The plasma was used for the biochemical assays of the serum level of ALP, Ca, and PO4. Kruskall-Wallis test and Mann-Whitney test with Bonferroni correction were performed for the statistical analyses. Results : Dose-dependent increase in the level of ALP (P<0.01) and decrease in the level of Ca (P<0.001) were observed among the control, 2.5C, and 10C groups. Although there was no significant difference in PO4 between the 2.5C and 10C groups, the 10C group showed a significantly higher level of PO4 than the control group (P<0.01). Conclusion : Since Clodronate induced significant dose-dependent change in the serum level of ALP, Ca, and PO4 during orthodontic tooth movement, orthodontists should consider these biochemical markers not only as a diagnostic tool for bone turnover rate but also as a monitoring tool for orthodontic tooth movement.

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Analysis of Radiation Characteristics of Ka-Band Von Karman Radome Based on IPO Scheme (IPO(Iterative PO)를 이용한 Ka 대역 Von Karman 레이돔 방사 특성 해석)

  • Koh, Il-Suek;Park, Chang-Hyun;Sun, Woong
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.22 no.12
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    • pp.1148-1154
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    • 2011
  • In this paper, the radiation properties of a Ka-band Von Karman radome are analyzed by using an IPO(Iterative PO) scheme. Since the operating frequency is very high, and the size of the considered radome is large, a numerical method cannot be directly applied to calculate the properties of the radome such as transmission loss, radome pattern, boresight error, etc. Hence, in this paper, an IPO scheme is used, which can efficiently consider the multiple interaction inside the radome. Also, the IPO scheme is based on the PO scheme, which is efficient and fast in a numerical point of view. The proposed scheme is verified based on Ku-band measurement data, and its feasibility for applicability to a higher frequency simulation is addressed through a simulation at the Ka-band.

Effects of Dietary Fatty Acids on Serum Lipids and Fatty Acid Composition of Serum Phospholipids in Men

  • Joo, Oh-Eun;Sook, Kwon-Jong;Kyung, Chang-Yu
    • Journal of Nutrition and Health
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    • v.30 no.4
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    • pp.415-424
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    • 1997
  • Serum lipid levels and fatty acid composition of serum phospholipids(PL) were investigated in 24 healthy male subjects who consumed either corn oil(CO) rich In linoleic acid(LA), perilla oil(PO) rich in $\alpha$-linolenic acid($\alpha$-LNA), or canola oil acid(OA) as a major fat source fir 5 weeks. The PO and the CNO groups showed significant(P <0.05) increases in serum high density lipoprotein-cholesterol(HDL-C) levels and in ratios of HDL- C/total cholesterol(TC) compared with initial values measured at the beginning of the study. Significantly(p <0.05) increased concentrations of serum triglycerides(TG) ware observed after 5 weeks of the CO based diet compared with both its intial value and the concentration observed after 5 weeks with the PO-based diet. fatty acid composition of serum PL reflected changes in dietary fatty acid composition and metabolism. Compared with the initial levels, significandy increased contents of eicosapentaenoic acid(EPA) and docosahexaenoic acid(DHA) were observed in serum PL of the PO group and significantly increased contents of $\alpha$-LNA and EPA were observed in the CNO group. Arachidonic acid(AA) content of serum PL did not change in the CO group during the study period, although, the increase in LA was significant(P <0.05). Compared with the CO-based diet, both the PO and the CNO-based diets seem to have beneficial effects on atherosclerosis by influencing the serum lipid profile and fatty acid composition of serum PL.

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