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Magnetism and Half-metallicity of Co2TiSn(001) Surfaces: A First-principles Study (Co2TiSn(001) 표면의 자성 및 반쪽금속성에 대한 제일원리연구)

  • Jin, Y.J.;Lee, J.I.
    • Journal of the Korean Magnetics Society
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    • v.18 no.4
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    • pp.131-135
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    • 2008
  • The electronic structures, magnetism, and half-metallicity of the full-Heusler $Co_2TiSn$(001) surfaces have been investigated by using the all-electron full-potential linearized augmented plane wave method within the generalized gradient approximation. We have considered both of the Co atoms terminated(Co-term) and the TiSn atoms terminated(TiSn-term) surfaces. From the calculated density of states, we found that the half-metallicity was destroyed at the surface of the Co-term, while the half-metallicity was retained at the TiSn-term. For the surface of the Co-term, due to the reduced coordination number the occupied minority d-states were shifted to high energy regions and that cross the Fermi level, thus destroy the surface half-metallicity. On the other hand the surface states at the surface of the TiSn-term were located just below the Fermi level, which reduces the minority spin-gap with respect to that of the center layer. The calculated magnetic moment of the surface Co atom for the Co-term was increased by 10 % to 1.16 ${\mu}_B$ with respect to that of the inner-layers, while the magnetic moment of the subsurface Co atom in the TiSn-term has almost same value of the innerlayers(1.03 ${\mu}_B$).

Immunization of preterm and low birth weight infant (미숙아와 저출생체중아의 예방접종)

  • Park, Su-Eun
    • Clinical and Experimental Pediatrics
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    • v.49 no.1
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    • pp.14-17
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    • 2006
  • Infants who are born prematurely or with low birth weight should be immunized at the same postnatal chronologic age. They should receive BCG, DTaP, IPV vaccines according to the same recommended schedule as full term infants. Hepatitis B vaccine schedule is modified when hepatitis B vaccine is administered a infant with birth weight less than 2,000 g. The recommended standard dose of each vaccine should be administered. Proportion of children experiencing vaccine-related adverse events dose not differ between full-term and preterm infants. Immunization with routinely recommended childhood vaccines is safe for preterm and low birth weight infants.

Long-Term Treatment Response to Lithium and Valproate in Patients with Bipolar 1 Disorder Treated More Than 2 Years : A Retrospective Study (1형 양극성 장애 환자에서 리튬과 발프로산의 장기간 치료 효과에 대한 후향적 평가 : 2년 이상 치료받은 환자의 효과 비교)

  • Ahn, Sung Woo;Yang, So-Yung;Choi, Yujin;Hong, Kyung Sue
    • Korean Journal of Biological Psychiatry
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    • v.23 no.4
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    • pp.185-192
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    • 2016
  • Objectives Treatment response of bipolar disorders (BDs) to long-term mood stabilizers maintenance has not been well explored because of complicated clinical and treatment courses. This study aims at investigating long-term clinical response of BDs to lithium and/or valproate in a naturalistic setting of a tertiary-care university-affiliated hospital. Methods Subjects were 65 patients with bipolar I (BD-I) disorders who had been treated with lithium and/or valproate for more than two years at single bipolar disorder clinic. Long-term response to the best treatment based on treatment algorithms and the current clinical standard of care was retrospectively evaluated using the Alda Scale and the Clinical Global Impression Scale for use in bi-polar illness (CGI-BP). Patients were classified into full responder and partial/non responder groups based on the total score of the Alda Scale with the cut-off score generated from the frequentist mixture analysis of the authors' previous study. Results The mean duration of treatment with the index medication was 69.2 months. Baseline demographic and clinical characteristics were not different among three mood stabilizer groups (valproate, lithium, and combination groups). Twenty-one subjects were classified into full responder group (32.3%). Treatment response assessed by the Alda Scale and CGI-BP scores was not different between lithium and valproate groups. The Alda Scale scores were well correlated with the CGI-BP scores (p < 0.05). Conclusions One third of the patients showed a full response to the long-term lithium and/or valproate treatment in BD-I. The degree of response was similar between lithium and valproate groups.

Hematologic Status of Newborn Infants of Mother with Pregancy-induced Hypertension (임신성 고혈압 산모의 태아의 혈액상)

  • Lee, Doo-Jin;Koh, Min-Whan;Lee, Sung-Ho
    • Journal of Yeungnam Medical Science
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    • v.11 no.2
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    • pp.352-362
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    • 1994
  • To evaluate the effects of pregnancy-induced hypertension (PIH) to the iron status of fetuses, umbilical cord blood of 35 newborn infants borne by PIH mothers and of 37 normal term infants delivered at Yeungnam University Hospital from September 1, 1993 to September 30, 1994, were studied. The serum hemoglobin concentration of women with PIH was significantly higher than normal full-term pregnant women. There was no significant difference in serum hemoglobin concetration between women with PIH and normal full-term pregnant women and their newborn infants. There was no significant difference in serum hemoglobin concentration beween infants of women with PIH and normal full-term infants. The serum iron concentration of newborn infants of women with PIH was higher and the serum ferritin concentration of newborn infants of women with PIH was lower than normal full-term infants, but there were no significant difference between the two groups. The serum total iron-binding capactity and unsaturated iron-binding capacity of infants of women with PIH were significantly higher than normal full-term infants. The newborn infants of PIH women seemed that they might have occult depletion of iron store and need meticulous follow up during early neonatal period.

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Infantile Hypertrophic Pyloric Stenosis -Clinical Differences between Premature and Full-term Infants (미숙아와 만삭아에서의 비후성 유문 협착증의 임상적 차이)

  • Lee, Suk-Koo;Kim, Seong-Hwan;Lee, Woo-Yong;Kim, Hyun-Hahk
    • Advances in pediatric surgery
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    • v.4 no.1
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    • pp.34-38
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    • 1998
  • Infantile hypertrophic pyloric stenosis(IHPS) is common in full-term babies, and relatively rare in prematures. The diagnosis of IHPS in premature infants may be obscured because of the lack of classic symptoms and signs and the absence of the standard criteria for ultrasonic diagnosis. The purpose of this study is to discover the clinical differences between premature and full-term infants with pyloric stenosis, and determine the appropriate diagnostic methods for early diagnosis in premature infants. The clinical records of 52 IHPS patients who had been operated upon from October, 1994 to April, 1997 were reviewed. The incidence of IHPS in premature infants was 25 %. The onset of symptom was 4.7 weeks of age in premature, and 2.9 weeks in full-term babies. Diagnosis was established by typical symptoms. signs. and diagnostic imaging studies. In two premature infants, diagnosis was confirmed by upper gastrointestinal(GI) series, because ultrasonography did not meet the diagnostic criteria. Two premature infants initially diagnosed as gastroesophageal reflux by esophagography. were found to have IHPS by upper GI series. For the diagnosis of IHPS, a new set of criteria for premature babies has to be developed.

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Effect of Synbiotic on the Treatment of Jaundice in Full Term Neonates: A Randomized Clinical Trial

  • Ahmadipour, Shokoufeh;Baharvand, Parastoo;Rahmani, Parisa;Hasanvand, Amin;Mohsenzadeh, Azam
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.22 no.5
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    • pp.453-459
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    • 2019
  • Purpose: Jaundice accounts for most hospital admissions in the neonatal period. Nowadays, in addition to phototherapy, other auxiliary methods are used to reduce jaundice and the length of hospitalization. This study aimed to investigate the effect of probiotics on the treatment of hyper-bilirubinemia in full-term neonates. Methods: In this randomized clinical trial, 83 full-term neonates, who were admitted to the hospital to receive phototherapy in the first 6 months of 2015, were randomly divided into two groups: synbiotic (SG, n=40) and control (CG, n=43). Both groups received phototherapy but the SG also received 5 drops/day of synbiotics. Serum bilirubin, urine, stool, feeding frequency, and weight were measured daily until hospital discharge. A p-value<0.05 was considered statistically significant. Results: The mean total serum bilirubin in the SG was lower than that in the CG ($9.38{\pm}2.37$ and $11.17{\pm}2.60mg/dL$, respectively). The urine and stool frequency in the SG was significantly higher than that in the CG (p<0.05). The duration of hospitalization in the SG was shorter than that in the CG. Conclusion: Use of synbiotics as an adjuvant therapy had a significant treatment effect on jaundice in full-term neonates. Further studies including larger samples with long follow-up periods are essential to confirm the benefits of routine use of synbiotics in neonatal patients with jaundice.

Long-term simulation of wind turbine structure for distributed loading describing long-term wind loads for preliminary design

  • Ibrahimbegovic, Adnan;Boujelben, Abir
    • Coupled systems mechanics
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    • v.7 no.2
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    • pp.233-254
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    • 2018
  • In order to reduce the dependency on fossil fuels, a policy to increase the production capacity of wind turbine is set up. This can be achieved with increasing the dimensions of offshore wind turbine blades. However, this increase in size implies serious problems of stability and durability. Considering the cost of large turbines and financial consequences of their premature failure, it is imperative to carry out numerical simulations over long periods. Here, an energy-conserving time-stepping scheme is proposed in order to ensure the satisfying computation of long-term response. The proposed scheme is implemented for three-dimensional solid based on Biot strain measures, which is used for modeling flexible blades. The simulations are performed at full spatial scale. For reliable design process, the wind loads should be represented as realistically as possible, including the fluid-structure interaction (FSI) dynamic effects on wind turbine blades. However, full-scale 3D FSI simulations for long-term wind loading remain of prohibitive computation cost. Thus, the model to quantify the wind loads proposed here is a simple, but not too simple to be representative for preliminary design studies.

A Study about the Influencing Variables of Maternal Weight Gain and Neonatal birth Weight in Full Term Pregnancies (산모의 체중증가 및 신생아의 체중에 영향을 미치는 인자에 관한 연구)

  • Se, Hyei-Jin;Yang, Young-Ok
    • Korean Parent-Child Health Journal
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    • v.8 no.2
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    • pp.147-156
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    • 2005
  • Purpose: The purpose of this study was the influencing variables of maternal weight gain and neonatal birth weight in full term pregnancies. Method: The subjects were 136 mothers in full term pregnancies(38-42 weeks) and her babies who were selected from 2 general hospital in Pusan. The data were collected from June 14th to October 14th in 2004. Data were obtained by questionnaires. Results: The maternal weight gains was lesser that the pregravid weights was the lower (F=3.410, p=.011). The volumes of weight gains of mothers that had alcohol drinking(t=6.259, p=.014), caffeine consumption (t=4.137, p=.044) were lesser than not. And the birth weight were influenced by passive smoking(t=4.017, p=.047), caffeine consumption (t=5.954, p=.016). Conclusion: The results of this research confirm that the maternal weight gains were influenced by pregravid weight, alcohol drink, caffeine consumption. And the birth weight were influenced by passive smoking, caffeine consumption.

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Application of the New Ballard Scale with Extended Scoring System in Full-term Newborns (New Ballard Scale(NBS)의 확장 적용)

  • Ahn, Young-Mee;Kim, Nam-Hee
    • Child Health Nursing Research
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    • v.13 no.4
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    • pp.436-443
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    • 2007
  • Purpose: An exploratory study was done to examine the validity of the new Ballard scale with extended scoring system(eNBS) in estimating gestational age(AG) in full-term newborns. Method: The eNBS scoring system was extended to include all numbers of total score of NBS and GA to allow a 3-days variation in GA estimatio compared to the original scale which has a 2-week variation due to the application of a 5-score interval for the total NBS score and only even numbers for GA. GA by eNBS(GA-eNBS) was compared with GA by LMP(GA-LMP) and GA by standard NBS(GA-sNBS) in 133 full-term newborns. Difference between GA-LMP and GA-eNBS was analyzed for each GA. Results: Positive correlations were observed in GA-sNBS and GA-eNBS with GA-LMP. There was no difference between GA-LMP and GA-eNBS at 39GA and 40GA. At 37GA and 38GA, GA-eNBS overestimated GA-LMP up to 1 week, while underestimating up to 1 week at 41GA. Conclusions: The accuracy of eNBS was validated within 3 days of variation in GA estimation at 39-40GA. Overestimation by eNBS suggests the possible acceleration of fetal maturity in premature newborns, while underestimation, of the deceleration of fetal maturity in postterm newborns.

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Capacity-Filtering Algorithm based Release Planning Method for TFT-LCD Fab (생산능력 필터링 알고리즘 기반의 TFT-LCD Fab 투입계획 생성 방법론)

  • Son, Hak-Soo;Lee, Ho-Yeoul;Choi, Byoung-Kyu
    • IE interfaces
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    • v.22 no.1
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    • pp.1-9
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    • 2009
  • As the LCD fabrication factories (Fab) are highly capital-intensive and the markets are very competitive, it is an essential requirement of operational management to achieve full-capacity production while meeting customer demands on time. In a typical LCD Fab, medium-term schedules such as release plans and production plans are critical to achieve the goal of full-capacity production and on-time delivery. Presented in this paper is a framework for weekly planning system generating medium-term schedules using a finite-capacity planning method. Also this paper presents a release planning method applying capacityfiltering algorithm, especially backward capacity-filtering procedure, which is one of the finite-capacity planning methods. In addition, performance analyses using actual data of a TFT-LCD Fab show that the proposed method is superior to existing methods or commercial S/W products generating release plans.