• Title/Summary/Keyword: egt

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A Study on the Step-Up Converter with the New Topology Method (내구성이 개선된 발전용 가스터빈 온도센서 개발에 관한 연구)

  • Lee, Young-Jun;Jung, Hai-Young
    • The Journal of the Korea institute of electronic communication sciences
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    • v.15 no.6
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    • pp.1175-1186
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    • 2020
  • In this study, the problem is analyzed, and methods of improvement are presented. For evaluating the performance of the proposed EGT sensor, a complex environment test equipment has been developed to test both high temperature and vibration conditions at the same time. This equipment evaluates the accuracy and response time of the EGT sensor. In the results of the comparison test of the complex environment test equipment of heat and vibration, the existing sensor showed a carbonization problem, and the proposed sensor showed no problem. Therefore, it is expected that the improved EGT sensor will be able to be applied to various industrial fields, including gas turbines for power generation.

A study on the EGT(Extra Gigong Therapy) with Hypertension (고혈압(高血壓) 환자를 대상으로 시행한 외기발공(外氣發功)의 유효성(有效性) 고찰)

  • Kim, Ju-mee;Park, Jong-woong;Park, Ryung-joon;Pi, Chiem-mei;Sun, Jae-guang
    • Journal of Korean Medical Ki-Gong Academy
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    • v.9 no.1
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    • pp.1-48
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    • 2006
  • This is a paper on the validity of Extra Gigong Therapy(EGT) on Hypertension patients. We've treated hypertension patients EGT, used IEMD for analysis, so that come to these conclusions. 1. Average value of treatment group was 4.215, this is higher than one of control group. They had differences up to the standard. 2. Hypertension patients are divided into EGT treated group(treatment group) and non-treated one(control group). 3. Light stomach meridian has differences in treatment group and no differences in control group before and after EGT. That means EGT is effective. So does Spleen meridian. 4. With 12 meridians' electric potential values, we come to conclusion that EGT is likely to do hypertension patients good, especially on the point of view of liver, kidney, stomach and spleen meridian pathways. And bibliographies back up in this conclusion. 5. We classified hypertension patients into 4 factors: that is a spiritual factor, a physical factor, an eating factor and a circulation factor. Among these, a physical factor was seen of high frequency. There is a close connection between a physical factor and liver, kidney, spleen meridian pathways. The consequence was that subjects are suburban residents in the prime of time who had overworked.

Molecular Cloning and Sequencing of the Ecdysteroid UDP-Glucosyl-transferase Gene, EGT, from Bombyx mori Nuclear Polyhedrosis Virus K1

  • Park, Hye-Jin;Chung, Eun-Hwa;Lee, Kwang-Sik;Han, Ji-Hee;Lee, Seong-Jin;Sohn, Hung-Dae;Jin, Byung-Rae
    • International Journal of Industrial Entomology and Biomaterials
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    • v.3 no.1
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    • pp.37-41
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    • 2001
  • The ecdysteroid UDP-glucosyltransferase (egt) gene isolated from Bombyx mori nuclear polyhedrosis virus (BmNPV) K1 strain was compared to its homologue from Autographa californica NPV (AcNPV) and Bm NPV T3. The egt gene of BmNPV-K1 encoded 506 amino acid open reading frame, and was 99.6% identical at the amino acid level and 99.2% identical at the nucleotide level to BmNPV T3. The BmNPV-K1 egt gene showed highly identity to AcNPV and BmNPV T3 strain. The BmNPV-K1 egt gene was different from amino acid sequence at 2 positions, 19 and 72, in BmNPV T3. The genomic location of egt gene in the BmNPV-K1 was confirmed by Southern blot analysis and its expression patterns at the transcriptional level in the infected cells were confirmed by Northern hybridization analysis. Transcripts of the egt of Bm NPV-K1 peaked around 12 hrs postinfection (p.i.) and reduced at 24 hrs p.i.

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Antioxidant effect of ergothioneine on in vitro maturation of porcine oocytes

  • Ji-Young Jeong;Lian Cai;Mirae Kim;Hyerin Choi;Dongjin, Oh;Ali Jawad;Sohee Kim;Haomiao Zheng;Eunsong Lee;Joohyeong Lee;Sang-Hwan, Hyun
    • Journal of Veterinary Science
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    • v.24 no.2
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    • pp.24.1-24.13
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    • 2023
  • Background: Ergothioneine (EGT) is a natural amino acid derivative in various animal organs and is a bioactive compound recognized as a food and medicine. Objectives: This study examined the effects of EGT supplementation during the in vitro maturation (IVM) period on porcine oocyte maturation and subsequent embryonic development competence after in vitro fertilization (IVF). Methods: Each EGT concentration (0, 10, 50, and 100 μM) was supplemented in the maturation medium during IVM. After IVM, nuclear maturation, intracellular glutathione (GSH), and reactive oxygen species (ROS) levels of oocytes were investigated. In addition, the genes related to cumulus function and antioxidant pathways in oocytes or cumulus cells were investigated. Finally, this study examined whether EGT could affect embryonic development after IVF. Results: After IVM, the EGT supplementation group showed significantly higher intracellular GSH levels and significantly lower intracellular ROS levels than the control group. Moreover, the expression levels of hyaluronan synthase 2 and Connexin 43 were significantly higher in the 10 μM EGT group than in the control group. The expression levels of nuclear factor erythroid 2-related factor 2 (Nrf2) and NAD(P)H quinone dehydrogenase 1 (NQO1) were significantly higher in the oocytes of the 10 μM EGT group than in the control group. In the assessment of subsequent embryonic development after IVF, the 10 μM EGT treatment group improved the cleavage and blastocyst rate significantly than the control group. Conclusions: Supplementation of EGT improved oocyte maturation and embryonic development by reducing oxidative stress in IVM oocytes.

퇴행성 관절염 환자를 대상으로 시행한 외기발공(外氣發功)의 유효성 고찰

  • Kim, Tae-un;Park, Jong-woong;Park, Ryung-joon;Sun, Jae-guang
    • Journal of Korean Medical Ki-Gong Academy
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    • v.9 no.1
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    • pp.217-237
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    • 2006
  • The purpose of this paper is to show that there is a sure effect of the Extra Gigong Therapy(EGT) on Osteoarthritis patients. 1. Methods of the Spreading-Qi, Breathe naturally, concentrate the mind on Lower Dan(elixir field), When exhaling, Mindwill accompanies Qi to go to the Conception Vessel(CV) and Governor Vessel(GV), conduct Qi to the palms or fingers and emit Qi, with the emitting site touching or leaving the treated region. Qi helps vitality exalted, balance kept, and the circulation well-flowed. 2. For that, we made a schedule of joining some of Osteoarthritis patients who usually take anti-Osteoarthritis drugs, dividing them into two of groups. One is EGT-taken(group 1) and the other is not EGT-taken(group 2). 3. For insurance of analytic accuracy, we use the IEMD(Inner Energy Meridian Diagnosis). 4. In conclusion, there was significant differences between two of groups. Especially from the point of view of liver, kidney and spleen meridian pathways.

Effect of the Ecdysteroid UDP-Glucosyltransferase Gene of the Bombyx mori Nucleopolyhedrovirus on the Development of the Silkworm, Bombyx mori (누에 핵다각체병 바이러스의 Ecdysteroid UDP-glucosyltransferase 유전자가 누에의 발육에 미치는 영향)

  • ;;Shizuo George Kamita
    • Journal of Sericultural and Entomological Science
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    • v.40 no.2
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    • pp.105-110
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    • 1998
  • The baculovirus egt gene encodes an ecdysteroid UDP-glucosyltransferase(EGT) which catalyzes the transfer of glucose from UDP-glucose to the insect moltion hormone ecdysteroid resulting in a functionally inactive ecdysteroid. In baculovirus-infected insect larvae, EGT has been shown block molting and pupation. In this study, we compared the development of 4th and 5th instar silkworm, Bombyx mori, larvae injected with either wild-type bombyx mori nucleopolyhedrovirus (BmNPV) or a mutant BmNPV(BmEGTZ) in which the egt gene was disrupted by the insertion of a lacZ gene cassette. Larvae injected with BmEGTZ died roughly 12 h more rapidly compared to indentical larvae infected with BmNPV. In addition, BmEGTZ- infected larvae prematurely stopped feeding and gain less weight compared to BmNPV-infected larvae. In order to investigate why BmEGTZ-infected larvae died more rapidly than BmNPV-infected larvae, the array of hemolymph proteins in BmEGTZ-or BmNPV-infected larvae were analyzed by SDS-PAGE. The hemolymph of BmEGTZ-infected larvae showed virus-specific proteins, including polyhedrin, about 12 h earlier than the hemolymph of BmNPV-infected larvae

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Development of Operating Program for EECU Test Bench

  • Kang, Myoungcheol;Kho, Seonghee;Ki, Jayoung
    • International Journal of Aerospace System Engineering
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    • v.1 no.1
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    • pp.10-15
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    • 2014
  • This study presents technical description of the operating program development that operates the test bench for functional test of EECU. The test bench is capable of testing, simulation and adjustment of the EECU software using the operating program. The test bench is for the Development Project of the EECU platform for FADEC system. The operating program is consists of 3 modules which are the test bench operating module, cockpit simulator module and SILS module. The operating module mainly carries out the EECU test with manual operation and operating scenarios. Also that record and process the test data. The cockpit simulator module is capable of implementation of virtual cockpit control input and engine status display. The SILS module can simulate engine and EECU operation in software environment.

A Study on the Transmission Error of a Star type Epicyclic Gear Train (스타형 유성기어열의 전달오차에 관한 연구)

  • 류형태;이동환;천길정
    • Transactions of the Korean Society of Automotive Engineers
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    • v.7 no.5
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    • pp.206-212
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    • 1999
  • In this paper, the transmission error of a atar type Epicyclic Gear Train (EGT) has been studied. Dynamic analysis has been executes calculate the rotation angle of the input and output shafts at various loads. Transmission Error of EGT has been measured to compare with the analysis results. There are qualitative similarity between the experimental and analytical results.

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Effects of Axial Flow Compressor Surge on the Performance of Turbofan Engine (터보팬 엔진의 축류압축기 서지가 엔진성능에 미치는 영향)

  • Oh, Chang-Yong;Koo, Ja-Ye
    • Journal of the Korean Society of Propulsion Engineers
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    • v.13 no.3
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    • pp.1-8
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    • 2009
  • This thesis has analyzed the effect of the surge happening in flight on the engine performance, especially on the PW4000 turbofan engine. It is to be judged that the flight surge can occur more often at the time of takeoff than it does en route due to the fact that the engine parameters are prone to fluctuate. EPR is judged to be the most highly sensitive parameter responding when surge occurs. Both Engine rpm and Wf decrease almost simultaneously just like an EPR. During the take-off rolling, N1 vibration is more sensitive than the N2 vibration. Consequently, the surge can be detected by EGT increase, while the other parameters (EPR, rpm, Wf, etc) decrease.

Effects of Axial Flow Compressor Surge on the Performance in Turbofan Engine (터보팬 엔진의 축류압축기 서지가 엔진성능에 미치는 영향)

  • Oh, Chang-Yong;Koo, Ja-Ye
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2008.05a
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    • pp.236-239
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    • 2008
  • This thesis has analyzed the effect of the surge happening in flight on the engine performance of the PW4000 turbofan engine. EPR is judged to be the most highly sensitive parameter responding when surge occurs. Both N1 rpm and N2 rpm decreases almost simultaneously just like an EPR. During the take-off rolling, the N1 vibration is more sensitive than the N2 vibration. Consequently, the surge can be detected by EGT increase, while the other parameters decrease.

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