• Title/Summary/Keyword: Turner

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Analysis of Temperature dependent Thermal Expansion Behavior in MMCs for Electronic packaging (전자 패키징용 금속복합재료의 온도에 따른 열팽창 특성)

  • 정성욱;남현욱;정창규;한경섭
    • Proceedings of the Korean Society For Composite Materials Conference
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    • 2002.05a
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    • pp.73-76
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    • 2002
  • This study developed SiC/Al composites for electronic packaging to which reinforcements were added with the volume fractions of 49%, 56% and 63% by the squeeze casting method. 0.8 wt.% of the inorganic binder as well as the $Al_2O_3$ fiber and SiC particles with the volume fraction of 1:10 were added to the SiC/Al composites For the produced SiC/Al composites, the CTEs (coefficients of thermal expansion) were measured from 30 to $300^{\circ}C$ and compared with the FEM numerical simulation to analyze the temperature dependent properties. The experiment showed the CTEs of SiC/Al composites that were intermediate values of those of Rule of Mixture and Turner's Model. The CTEs were close to Turner's Model in the room temperature and approached the Rule of Mixture as the temperature increases. These properties analyzed from the difference of the average stress acting between the matrix and the reinforcements proposed in this study

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A STUDY ON THE FBED EFFECT OF NON-EDIBLE MARINE ALGAE Part 2. Test of Nutrient Value for Pullet (비식용해조의 사료효과 증진에 관한 연구 제2보 중추 및 대추의 사료가치시험)

  • PARK Won Li
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.3 no.3
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    • pp.172-176
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    • 1970
  • This research dealt with the nutrient value of the seaweed, Sargessum horneri (Turner) C. Ag. which showed the highest nutrient value in the previous exporiment (Park 1968). Its objective was to find the most effective mixing ratio of ordinary chicken feed used for pullet. In order to investigate the most effective mixing ratio, seven kinds of sample feed with vary-ing amounts of the seaweed as shown in table 2 were prepared and were fed to seven groups of chickens, each group consisting of twenty, four week old, pullets. In addition, the effect of sodium glutaminate mixed in the feed was also investigated, and the following result was obtained. The average increase in body weight of each group during the experiment period was determined. The group fed with the feed containing $10\%$ powdered Sargassum horneri (Turner) C. Ag. showed the highest body weight increase. In this experiment the body weight increase was accelerated by mixing $0.5\%$ sodium glutaminate In the above feed.

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Current use of growth hormone in children (성장호르몬 치료의 최신 지견)

  • Shin, Choong Ho
    • Clinical and Experimental Pediatrics
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    • v.49 no.7
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    • pp.703-709
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    • 2006
  • Since the advent of growth hormone(GH), children with a wide variety of growth disorders have received GH treatment. In GH deficiency(GHD), Turner syndrome, chronic renal failure, children born small for gestational age, Prader-Willi syndrome, and idiopathic short stature, the therapeutic effects and safety profile of GH are reviewed. GH therapy has been clearly shown to improve height velocity and final adult height in a variety of pediatric conditions in which growth is compromised irrespective of GHD. Early initiation and individualization of GH treatment has the potential to normalize childhood growth. The supra-physiological doses of GH have been shown to increase height velocity during childhood and final height in non-GHD conditions. Adverse events during GH therapy are uncommon and often not drug related. However continued surveillance into adult life is crucial, especially in children receiving supra-physiological doses or whose underlying condition increases their risk of adverse effects.

Endobronchial Carcinosarcoma (기관지내 암육종)

  • 조덕곤;곽문섭;김치홍;문성배;장은덕
    • Korean Journal of Bronchoesophagology
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    • v.3 no.1
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    • pp.122-127
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    • 1997
  • Carcinosarcoma of the lung is a rare turner with an admixture of malignant epithelial(carcinomatous) and malignant mesenchymal (sarcomatous) components. Clinicopathologically, pulmonary carcinosarcoma has been divided into two types by its anatomical locations and growth nature, peripheral parenchymal and central endobronchial variants. We experienced an endobronchial carcinosarcoma that induced complete atelectasis of the right lung due to polypoid growing mass from the right upper lobe bronchus in a 67 year old male smoker. The patient underwent a successful right pneumonectomy. The tumor was composed of squamous cell carcinoma with variable sarcomatous differentiation into myogenous and undifferenciated sarcoma that demonstrated by immunohistochemical study. The patient has been doing well for the last seven months since the operation, without metastases or turner recurrence.

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Noninvasive prenatal test for the pregnancy with Turner syndrome mosaicism 45, X/47, XXX: A case report

  • Kim, Ji Hye;Lee, Gun Ho;Cha, Dong Hyun;Cho, Eun-Hae;Jung, Yong Wook
    • Journal of Genetic Medicine
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    • v.12 no.2
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    • pp.118-122
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    • 2015
  • Noninvasive prenatal test (NIPT) is a novel screening method for the diagnosis of fetal chromosomal aneuploidies. NIPT is based on technology that detects cell-free fetal DNA in maternal plasma and analyzes it with massively parallel sequencing technology to determine whether the fetus is at risk of trisomy 21, trisomy 18, trisomy 13 or sex chromosome abnormalities (SCAs). NIPT has been reported to have sensitivity of 99% and a false positive rate of less than 1% for detecting trisomy 21 and trisomy 18. Although extension of the application of NIPT to other SCAs has been attempted, there are concerns in extending NIPT to SCAs because of maternal or fetal mosaicism, undetected maternal SCAs, and multiple pregnancies. Recently, we assessed a pregnancy with the rare Turner syndrome mosaicism 45, X/47, XXX, which was reported as 45, X with NIPT. We present the case here and briefly review the current literatures on NIPT in testing for fetal monosomy X. To the best of our knowledge, this is the first report of the 45, X/47, XXX mosaicism in Korea to be reported as 45, X by NIPT with whole genome sequencing. This case report will provide valuable information for counseling women who want to undergo NIPT.

Factors Affecting Final Adult Height in Patients with Turner Syndrome (터너증후군 환자에서 최종 성인키에 영향을 미치는 인자들에 대한 연구)

  • Kim, Jae Hyun;Lee, Sung Soo;Hong, Su Young;Chung, Hye Rim;Shin, Choong Ho;Yang, Sei Won
    • Clinical and Experimental Pediatrics
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    • v.48 no.2
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    • pp.191-196
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    • 2005
  • Purpose : Short stature is one of the characteristic features of Turner syndrome. We investigated the factors affecting final adult height(FAH) in patients with Turner syndrome. Methods : The study group was comprised of 60 patients who were diagnosed with Turner syndrome by chromosomal study and clinical phenotypes and attained FAH. Data were obtained from retrospective review of the medical records. We analyzed the factors influencing FAH in growth hormone(GH) treated and GH untreated groups. Results : Sixty patients were enrolled; 48 patients received GH treatment, and 12 patients did not. Mean duration of GH treatment was 35.8 months(range 4 to 120 months), and mean dosage of GH was $0.8{\pm}0.2IU/kg/wk$ in GH treated group. Mean growth velocity was $5.6{\pm}2.0cm/yr$, which was significantly higher than that during pretreatment period. In the GH treated group, mean chronological age, bone age, mean height, and height standard deviation(SD) score at GH treatment were $12.2{\pm}2.7yr$ $10.3{\pm}2.5yr$ $127.5{\pm}10.1cm$ and $-3.1{\pm}1.1$, respectively. In the GH treated group, the mean FAH and SD score of FAH were $146.9{\pm}5.8cm$ and $-2.7{\pm}1.2$, respectively, which showed significant differences compared with those of the GH untreated group. Analyzing the factors affecting FAH in GH-treated patients, only the SD score of height at the time of treatment was significantly related to FAH. Conclusion : GH treatment leads to an increment in FAH in patients with Turner syndrome. Average FAH gain was as much as 5.8 cm. SD score of height at the time of GH treatment was the only factor influencing FAH.

Analysis of Temperature dependent Thermal Expansion Behavior of $\textrm{SiC}_\textrm{p}/\textrm{Al}_2\textrm{O}_{3f}/\textrm{Al}$ Composites ($\textrm{SiC}_\textrm{p}/\textrm{Al}_2\textrm{O}_{3f}/\textrm{Al}$ 복합재료의 온도에 따른 열팽창 특성 해석)

  • 정성욱;남현욱;정창규;한경섭
    • Composites Research
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    • v.16 no.1
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    • pp.1-12
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    • 2003
  • This study developed SiC$_{p}$/A1$_2$O$_3$$_{f}$/Al composites for electronic packaging to which reinforcements were added with the volume fractions of 49%, 56% and 63% by the squeeze casting method. 0.8 wt. % of the inorganic binder as well as the A1$_2$O$_3$ fiber and SiC Particles with the volume fraction of 1:10 were added to the composites, which were produced in the newly designed mold. For the produced SiC/Al composites, the CTEs (coefficients of thermal expansion) were measured from 30 to 300 and compared with the FEM numerical simulation to analyze the temperature dependent properties. The experiment showed the CTEs of SiC$_{p}$/A1$_2$O$_3$$_{f}$/Al composites that were intermediate values of those of Rule of Mixture and Turner's Model. The CTEs were close to Turner's Model in the room temperature and approached the Rule of Mixture as the temperature increases. These properties analyzed from the difference of the average stress acting between the matrix and the reinforcements proposed in this study.