• Title/Summary/Keyword: TCM

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Studies on in vitro Developmental Rate of Bisected Bovine Embryos Co-Cultured in TCM-199 Medium Containing Hormones, Oviductal Epithelial Cells and Cumulus Cells (소 분할 초기배와 호르몬, 난관상피세포 및 난구세포와의 공배양에 따른 체외발생율에 관한 연구)

  • 김상근;이종진
    • Korean Journal of Animal Reproduction
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    • v.19 no.4
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    • pp.259-264
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    • 1996
  • This study was carried out to investigate on the survival rates and in vitro developmental rates of bisected bovine embryos were by manipulator and micropipette. Bisected embryos were co-cultured in 20% FCS(v/v)+TCM-199 media containing hormones, oviductal epithelial cells and cumulus cells 0 to 72 hrs after bisection. Survival rate and in vitro fertilization rate were defined as development rate on in vitro culture or FDA-test. The results are summarized as follows ; 1. The in vitro developmental rate of biseciton embryos co-cultured in 20% FCS+TCM-199 medium containing PMSG, hCG, PMSG+hCG, hCG+$\beta$-estradiol 0 to 20 hrs and 20 to 40 hrs were 36.7, 26.7, 33.3, 40.0, and 30.0, and 30.0, 33.3, 30.0, 26.7, and 26.7%, respectively. The survival rate of bisection embryos co-cultured in TCM-199 medium containing hormones was significantly higher than that of non co-culture(25.0%). 2. The in vitro developmental rates of bisection embryos co-cultured in 20% FCS+TCM-199 medium containing oviductal epithelial cells 4 to 5 hrs and 20 to 24 hrs were 40.0 and 33.3%, respectively. The survival rate of bisection embryos co-cultured in TCM-199 medium containing oviductal epithelial cells was significantly higher than that of non co-culture(25.0%). 3. The in vitro developmental rates of bisection embryos co-cultured in 20% FCS+TCM-199 medium containing cumulus cells 4 to 5 hrs and 20 to 24 hrs were 43.3 and 36.7%, respectively. The survival rate of bisection embryos co-cultured in TCM-199 medium containing cumulus cells was significantly higher than that of non co-culture (25.0%).

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Effect of tissue culture medium waste after harvest of Korean wild ginseng on growth performance and diseases resistance in broiler chickens (산삼배양액 급여에 따른 육계의 생산성 및 질병 저항성 효과)

  • Seol, Jae-Won;Park, Jae-Hong;Chae, Joon-Seok;Kang, Hyung-Sub;Ryu, Kyeong-Seon;Kang, Chun-Seong;Park, Sang-Youel
    • Korean Journal of Veterinary Research
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    • v.50 no.2
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    • pp.85-91
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    • 2010
  • The large amount of tissue culture medium (TCM), which contains some of the active secretory components of Korean wild ginseng (KWG; Panax ginseng) such as saponins, is usually discarded after harvest of KWG. The present study was aimed to investigate the efficacy of oral administration of the TCM-KWG on growth performance and diseases resistance in broiler chickens. A day old broiler chickens randomized in 6 groups (n = 60/groups) were administered orally with 0, 2, 4, 8, 16 and 32 mL/L TCMKWG through drinking water for 5 weeks and examined the change of weight gain, feed intake and blood components. Also, five weeks old broiler chickens (n = 15/groups) were challenged orally with Salmonella (S.) gallinarum and investigated the mortality in broiler chickens. An average weight gain and feed intake significantly didn't change in TCM-KWG administration groups as compared to control group. The concentration of calcium (Ca), phosphate (Pi) and potassium (K) in serum were increase by TCM-KWG administration in broiler chickens. We also found that oral administration of TCM-KWG through drinking water significantly reduced the mortality in broiler chickens experimentally infected with virulent S. gallinarum. The results of this study indicated that TCM-KWG administration may elevate the resistance on disease and improved the skeleton formation and body homeostasis of chickens, and TCM-KWG can be used as a cost-effective and environmentally alternative additives to control of the disease and growth.

Orthogonal Stimulus-Response as a Tool to Formulate Traditional Chinese Medicinal Herbal Combination - New Scientific-Based TCM Herbal Formulating Method -

  • Loh, Yean Chun;Tan, Chu Shan;Yam, Mun Fei;Oo, Chuan Wei;Omar, Wan Maznah Wan
    • Journal of Pharmacopuncture
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    • v.21 no.3
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    • pp.203-206
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    • 2018
  • Objectives: There is an increasing number of complex diseases that are progressively more difficult to be controlled using the conventional "single compound, single target" approach as demonstrated in our current modern drug development. TCM might be the new cornerstone of treatment alternative when the current treatment option is no longer as effective or that we have exhausted it as an option. Orthogonal stimulus-response compatibility group study is one of the most frequently employed formulas to produce optimal herbal combination for treatment of multi-syndromic diseases. This approach could solve the relatively low efficacy single drug therapy usage and chronic adverse effects caused by long terms administration of drugs that has been reported in the field of pharmacology and medicine Methods: The present review was based on the Science Direct database search for those related to the TCM and the development of antihypertensive TCM herbal combination using orthogonal stimulus-response compatibility group studies approach. Results: Recent studies have demonstrated that the orthogonal stimulus-response compatibility group study approach was most frequently used to formulate TCM herbal combination based on the TCM principles upon the selection of herbs, and the resulting formulated TCM formula exhibited desired outcomes in treating one of global concerned complex multi-syndromic diseases, the hypertension. These promising therapeutic effects were claimed to have been attributed by the holistic signaling mechanism pathways employed by the crude combination of herbs. Conclusion: The present review could serve as a guide and prove the feasibility of TCM principles to be used for future pharmacological drug research development.

Effective Iterative Control Method to Reduce the Decoding Delay for Turbo TCM Decoder (터보 TCM 디코더의 복호 지연을 감소시키기 위한 효율적인 반복복호 제어기법)

  • 김순영;김정수;장진수;이문호
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.14 no.8
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    • pp.816-822
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    • 2003
  • In this paper, we propose an efficient iteration control method with low complexity for Turbo TCM(Turbo Trellis Coded Modulation) decoding which will be used fur power-limited environment. As the decoding approaches the performance limit of a given turbo code, any further iteration results in very little improvement. Therefore, it is important to devise an efficient criterion to stop the iteration process and prevent unnecessary computations and decoding delay. This paper presents an efficient algorithm for turbo TCM decoding that can greatly reduce the delay and iteration number. The proposed method use adaptive iteration number according to the criterion using the extrinsic information variance parameter in turbo TCM decoding process. The simulation results show that the proposed technique effectively can reduce the decoding delay and computation with very little performance degradation.

Effect of In-Vitro Fertilization of Porcine Matured Oocytes in Different IVM-IVC Culture Media on the Development of the Embryos (미성숙 돼지 난자가 다른 체외성숙.배양에 의한 배 발달률에 미치는 영향)

  • 안미현;홍대욱;석호봉
    • Journal of Embryo Transfer
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    • v.18 no.3
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    • pp.269-274
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    • 2003
  • This experiment was carried out to investigate the effects of different IVM-IVC culture media factors, such as development rates according to the maturation media, collecting times from slaughter to initiation of incubation and with cumulus cells, on in vitro maturation of oocytes collected from 3∼5mm diameter follicles of the swine abattoir The development rates significantly(p<0.05) higher when the oocytes were matured TCM-199 media than NCSU-23 media. In comparing with TCM199 medium in presence of Earle's salts and Hank's salt, there were no significantly differences between each salt balance in cleaved rate and in number of morulae plus blastocyst. Among 1,455 immature oocytes, 999(68.6%) of oocytes were cleaved. The number of development to the morulae and blastocysts were 617(61.8%) include 62 balstocysts(6.2%).

An Analytic Study on the Occurrence of Adverse Drug Reactions of Traditional Chinese Medicine Injections (중약주사제 부작용 발생에 관한 분석 연구)

  • Hwang, Ji Hye;Song, Ho Sueb
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.35 no.6
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    • pp.219-227
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    • 2021
  • The purpose of this study is to analyze the side effects (ADR) of Traditional Chinese Medicine (TCM) injections by age, injection type, symptoms, and causes, and to find preventive solutions for ADR. For the ADR of TCM injection data collected during the search period from January 1, 2010 to December 31, 2020, the correlation between each section was analyzed by subdividing it into age, injection type, symptoms and causes. CNKI, PubMed, and EMBASE were used to collect the clinical data. 'Chinese herbal injection', 'Traditional Chinese Medicine injection', 'Chinese herbal injection side effect', 'Chinese herbal injection adverse drug reaction' were used for the keyword from the database. All data were collected mainly for TCM injection and the causes of ADR due to TCM injection. However, data not related to the relevant study or TCM injection were excluded from this study. Among a total of 941 studies collected during the search period from January 1, 2010 to December 31, 2020, a total of 10 studies were selected for final analysis. In 1462 clinical data sets, ADR by gender was higher in males than females. By age, 41 to 60 years were the most common. The incidence of ADR by injection type was highest in the blood regulating injection type. Data analysis showed Xueshuantong injection had the highest ADR. Among the symptoms of ADR, skin diseases were the most common. The most common cause of ADR was the unreasonable use of drugs. In China, for ADR management, the use of TCM injections is recommended according to the basic principles for the clinical use of TCM injections established by the Chinese government. In this study, we analyzed the current status and causes of ADR in TCM injections, and found a preventive solution. It is expected that it can be used as basic data to increase the usability of pharmacopuncture and herbal medicines in Korea in the future.

Trends in Clinical Research on Herbal Medicine Treatment in Pediatric Asthma - Focusing on Randomized Controlled Clinical Trials in Traditional Chinese Medicine (소아 천식의 한약 치료에 대한 임상연구 동향 - 중의학 무작위 대조군 임상시험을 중심으로)

  • Seo Lin;Jang Subi;Choi Bom;Choi Bom;Cheon Jin Hong
    • The Journal of Pediatrics of Korean Medicine
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    • v.37 no.4
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    • pp.70-90
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    • 2023
  • Objective This study analyzed randomized clinical trials (RCTs) on pediatric asthma using traditional Chinese medicine (TCM) to determine its efficacy and safety. Methods We searched electronic databases in English, Chinese, Japanese, and Korean and evaluated 35 articles published up to December 28, 2022. Based on data from the literature, we analyzed treatments, results, composition of herbal medicine, frequency of medicinal herbs, and decoction. Results TCM for pediatric asthma was compared to supportive therapy, inhaled corticosteroids, and standardized treatments. Of the 35 studies, 32 showed that TCM treatments were effective in alleviating asthma symptoms. Furthermore, TCM treatment was considered safe compared to common asthma treatments. Among the TCM treatments for pediatric asthma, the most frequent decoctions were Gamisaganmahwangtang (加味射干麻黃湯) and Saganmahwangtang (射干麻黃湯). Ephedra Herba (麻黄), Armeniacae Semen (杏仁), Asiasari Radix et Rhizoma (細辛), Belamcandae Rhizoma (射干) were herbs that were frequently used for asthma in TCM decoctions. Conclusion This review showed that TCM is effective in treating pediatric asthma. More clinical RCTs are needed to confirm the efficacy and safety of TCM treatment.

A Comparative Study of Branch Metric Calculator in QAM-TCM Decoder (QAM-TCM 복호기의 가지척도계산방식 비교 연구)

  • 김진우;최시연;강병희;오길남;김덕현
    • Proceedings of the IEEK Conference
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    • 2001.09a
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    • pp.249-252
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    • 2001
  • TCM(Trellis Coded Modulation) has soft decision scheme so that BM(Branch Metric) calculates the ED(Euclidean Distance) between the received signal and each code words in signal space. For computing the ED, square and square root computations increase the hardware complexity. Some simplified method is known for convolutional codes with QPSK(Quadrature Phase Shift Keying), PSK(Phase Shift Keying) modulation. But it is not acceptable for QAM (Quadrature Amplitude Modulation)-TCM scheme. In this paper, we suggest that two modified BM computation methods, which is applicable for QAM-TCM. By comparative study, we also assessed two proposed method in the case of hardware complexity and BER (Bit Error Rate) performance.

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A Study on TCM Decoder Performance for 8 PSK, 8 PAM, 16 QAM in the Communication Channel With additive Gaussian and Impulsive Noise (가우스성 잡음과 임펄스성 잡음이 혼재하는 통신 채널 상에서 8 PSK, 8PAM, 16 QAM 에 대한 TCM 복호기 성능에 관한 연구)

  • 정지원;김경신;원동호
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.31A no.9
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    • pp.18-25
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    • 1994
  • Previously. TCM decoder has been using the Viterbi algorithm that was complex. In order to reduce the complexity of decoder. we proposed the “modified decoding algorithm using the path back method” and the modified decoding algorithm which extends the previous decoding algorithm to be able to applied to TCM decoder in this paper. On the gaussian and impulsive noise channel. Monte-Carlo simulation is used for analyzing the TCM performance and proving the efficiency of proposed decoding algorithm.

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Circuit Design of QAM Signal Mapper for Rotationally Invariant I/Q TCM (회전 불변 I/Q TCM을 위한 QAM 신호 사상기 회로 설계)

  • Kim, Chang-Joong;Lee, Ho-Kyoung
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.49 no.1
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    • pp.26-30
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    • 2012
  • In this paper, we propose a signal generation method of rectangular QAM for rotationally invariant I/Q TCM. The proposed method consists of only digital logic gates without look-up table so that we can implement the system compactly. Our scheme can be applied to every rectangular QAM with the level higher than 64.