• 제목/요약/키워드: SCT

검색결과 161건 처리시간 0.023초

SCT 박막의 미세구조 및 구조적인 특성 (Microstructure and Structural Properties of SCT Thin Film)

  • 김진사;오용철
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제55권12호
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    • pp.576-580
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    • 2006
  • The $(Sr_{0.85}Ca_{0.15})TiO_3(SCT)$ thin films were deposited on Pt-coated electrode $(Pt/TiN/SiO_2/Si)$ using RF sputtering method according to the deposition condition. The crystallinity of SCT thin films were increased with increase of deposition temperature in the temperature range of $100{\sim}500[^{\circ}C]$. The optimum conditions of RF power and $Ar/O_2$ ratio were 140[W] and 80/20, respectively. Deposition rate of SCT thin films was about $18.75[{\AA}/min]$ at the optimum condition. The composition of SCT thin films deposited on Si substrate is close to stoichiometry (1.102 in A/B ratio). The maximum dielectric constant of SCT thin film as obtained by annealing at $600^{\circ}C$.

외래 초진환자의 만족진료시간과 관련 추가 비용 지불 의사 (Analysis of New Patient's Willingness to Pay Additional Costs for Securing Satisfactory Consultation Time)

  • 이찬희;임현선;김영남;윤수진;박양숙;김선애;박은철;강중구
    • 보건행정학회지
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    • 제27권1호
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    • pp.39-46
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    • 2017
  • Background: We evaluated new patient's satisfactory consultation time (SCT) and their willingness to pay additional costs (WPAC) for their SCT. Methods: We surveyed medical service satisfaction, SCT, WPAC for their SCT, and payable amount to 612 new patients of single general hospital and measured their real consultation time (RCT). To compare WPAC and payable amount, we divided RCT into 4 groups (${\leq}3$ minutes, 3-5 minutes, 5-10 minutes, and > 10 minutes), and SCT into 3 groups (${\leq}5$ minutes, 5-10 minutes, and > 10 minutes). On the basis of WPAC, we estimated new patient's SCT. Results: RCT was 6.2 minutes, SCT was 8.9 minutes, and medical service satisfaction score was 4.3 (out of 5). The number of patients having WPAC (payable group) was 381 (62.3%) and the amount was 5,853 Korean won. Their RCT and SCT were longer than non-payable group (6.4 minutes vs. 5.7 minutes, 9.3 minutes vs. 8.2 minutes). From multiple logistic regression analysis, WPAC of RCT 5-10 minutes was higher than that RCT ${\leq}3$ minutes (odds ratio= 1.78). Payable amount was highest in RCT > 10 minutes (6,950 Korea won) and SCT > 10 minutes (7,458 Korean won). Intuitively we suggest 10 minutes as SCT, based on payable group's SCT (9.3 minutes) and cut-off time differentiating payable group with non-payable group (10 minutes). Conclusion: We found that new patient had WPAC for their SCT and the longer the SCT, the greater the amount. From this, we hope that current simplified new patient consultation fee calculating system should be modified combining the consultation time factor.

개의 잠복고환된 단 고환에서 정상피종과 세르토리 세포종의 동시 발생 (Concurrent Occurrence of Seminoma and Sertoli Cell Tumor in a Dog with Ctyptorchidism and Monorchidism)

  • 조호성;;박남용
    • 한국임상수의학회지
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    • 제21권2호
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    • pp.191-193
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    • 2004
  • A 9-year-old male poodle dog exhibited a white to yellow 3.0$\times$2.0$\times$3.9 cm mass in the left testicle with cryptorchidism and monorchidism. Grossly, necrosis and hemorrhage were observed on the cut surface of the mass. Histopathologically the mass consisted of seminoma and sertoli cell tumor (SCT). Seminoma was characterized with diffuse solitary pattern in which tumor cells had polygonal nuclei and clear cell border. SCT was composed of compact neoplastic cells with small nuclei and indefinite cytoplasm. The tumor was occupied mainly with SCT. SCT and seminoma were observed occasionally in the same lesion. From these results, this case was diagnosed as concurrent seminoma and SCT in the left cryptorchidism and monorchidism. To our knowledge, this is the first report of concurrent occurrence of seminoma and SCT in a dog with cryptorchidism and monorchidism in Korea.

열처리 온도에 따른 SCT 박막의 미세구조 및 유전특성 (Microstructure and Dielectric Properties of SCT Thin Film with Annealing Temperature)

  • 김진사;조춘남;신철기;박건호;최운식;이성일;이준웅
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1999년도 추계학술대회 논문집
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    • pp.244-247
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    • 1999
  • The(Sr$\sub$0.85/Ca$\sub$0.15/) TiO$_3$(SCT) thin films are deposited on Pt-coated electrode(Pt/TiN/SiO$_2$/Si) using RF sputtering method. The composition of SCT thin films deposited on Si substrate at room temperature is close to stoichiometry(1.102 in A/B ratio). Also, SCT thin films deposited on Pt-coated electrodes have the cubic perovskite structure and polycrystalline state. The maximum dielectric constant of SCT thin films is obtained by annealing at 600[$^{\circ}C$].The dielectric constant changes almost linearly in temperature ranges of -80~+90[$^{\circ}C$].

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Sacrococcygeal Teratoma : A Tumor at the Center of Embryogenesis

  • Phi, Ji Hoon
    • Journal of Korean Neurosurgical Society
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    • 제64권3호
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    • pp.406-413
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    • 2021
  • Sacrococcygeal teratoma (SCT) is an extragonadal germ cell tumor (GCT) that develops in the fetal and neonatal periods. SCT is a type I GCT in which only teratoma and yolk sac tumors arise from extragonadal sites. SCT is the most common type I GCT and is believed to originate through epigenetic reprogramming of early primordial germ cells migrating from the yolk sac to the gonadal ridges. Fetal SCT diagnosed in utero presents many obstetrical problems. For high-risk fetuses, fetal interventions (devascularization and debulking) are under development. Most patients with SCT are operated on after birth. Complete surgical resection is the key for tumor control, and the anatomical location of the tumor determines the surgical approaches. Incomplete resection and malignant histology are risk factors for recurrence. Approximately 10-15% of patients have a tumor recurrence, which is frequently of malignant histology. Long-term surveillance with monitoring of serum alpha fetoprotein and magnetic resonance imaging is required. Survivors of SCT may suffer anorectal, urological, and sexual sequelae later in their life, and comprehensive evaluation and care are required.

신통축어탕(身痛逐瘀湯)이 난소적출(卵巢摘出) 백서(白鼠)의 골다공증(骨多孔症)에 미치는 영향(影響) (Effects of Sintongchukeatang on the Ovariectomized Rat Model of Postmenopausal Osteoporosis)

  • 박재웅;심호철;김송백;유심근
    • 대한한방부인과학회지
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    • 제19권1호
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    • pp.81-96
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    • 2006
  • Purpose : this study is to examine what are the effects of the Sintongchukeatang(SCT) on the ovariectomized rat model of postmenopausal osteoporosis. Methods : 12weeks Female Sprague-Dawley 30 rats of weighting 250-300g, were divided into three groups including the sham operation groups(10heads) and overiectomy groups(10heads). then we observed changes in the body weight serum metabolic products and femoral trabecular bone. Results : 1. The level of serum ALP activity in control group showed significant increase in comparison with sham, but that in SCT-treated was significantly decreased in comparison with control. 2. The level of serum GOT in control group showed no change in comparison with sham, but that in SCT-treated was significantly decreased in comparison with control. The level of serum GPT did not significant change among the three groups. 3. The level of serum estrogen in control group showed slightly decreased in comparison with sham, but that in SCT-treated showed no change in comparison with control. 4. Trabecular bone area as well as trabecular thickness in control group showed significant decrease in comparison with sham. Those in SCT-treated showed significant increase in comparison with control. 5. Trabecular separation only in SCT-treated showed significant decrease in comparison with control. 6. Osteoclast number and oseoblast surface in control group showed significant increase in comparison with sham. Those in SCT-treated showed significant decrease in comparison with control. Conclusion : SCT has shown to be capable of preventing and curing osteoporosis caused by old-aged and postmenopause.

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Antioxidative Properties of Sachil-Tang Extract

  • Yi, Hyo-Seung;Moon, Jin-Young
    • 동의생리병리학회지
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    • 제23권4호
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    • pp.872-882
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    • 2009
  • Sachil-Tang (SCT) has been traditionally used as a prescription of spasm of the esophagus by stress, pectoralgia and oppressive feeling of the chest in Oriental medicine. This study was carried out to investigate the antioxidant activities of the ethanol extract of SCT and its inhibitory effect on intracellular oxidation and vascular cell adhesion molecule-1 expression in human umbilical vein endothelial cells (HUVECs) using various methods. The SCT extract showed a strong inhibitory effect on free radical generating model systems, including DPPH radical, superoxide anions, hydroxyl radical, peroxynirite and nitric oxide. Besides, the SCT extract exhibited a strong inhibitory effect on lipid peroxidation in rat liver homogenate induced by $FeCl_2$-ascorbic acid, and protected plasmid DNA against the strand breakage in a Fenton's reaction system. The SCT extract also inhibited copper-mediated oxidation of human low-density lipoprotein (LDL), and repressed relative electrophoretic mobility of LDL. Furthermore, the SCT extract protected intracellular oxidation induced by various free radical generators and inhibited expression of vascular cell adhesion molecule-1 (VCAM-1) in HUVECs. These results suggest that SCT can be an effective natural antioxidant and a possible medicine of atherosclerosis.

RF 스퍼터링법에 의한 SCT 박막의 기판온도 영향 (Influence of Substrate Temperature of SCT Thin Film by RF Sputtering Method)

  • 오용철;김진사;조춘남;신철기;송민종;소병문;최운식;김충혁;이준웅
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2004년도 하계학술대회 논문집 Vol.5 No.2
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    • pp.718-721
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    • 2004
  • The $(Sr_{0.9}Ca_{0.1})TiO_3$(SCT) thin films are deposited on Pt-coated electrode$(Pt/TiN/SiO_2/Si)$ using RF sputtering method at various substrate temperature. The optimum conditions of RF power and $Ar/O_2$ ratio were 140[W] and 80/20, respectively. Deposition rate of SCT thin films was about $18.75[{\AA}/min]$. The crystallinity of SCT thin films were increased with increase of substrate temperature in the temperature range of $100\sim500[^{\circ}C]$. The dielectric constant of SCT thin films were increased with the increase of substrate temperature, and changed almost linearly in temperature ranges of $-80\sim+190[^{\circ}C]$. The current-voltage characteristics of SCT thin films showed the increasing leakage current as the substrate temperature increases.

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흡수성이 우수한 창상치료용 미더덕껍질 셀룰로오스필름의 제조 및 특성 분석 (Preparation and Characterization of High Absorptive Cellulose Film Derived from Styela Clava Tunic for Wound Dressing)

  • 성금용;고은경;이승현;곽문화;손홍주;이희섭;황대연;정영진
    • 한국염색가공학회지
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    • 제27권1호
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    • pp.70-79
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    • 2015
  • To establish the optimal conditions for the manufacture of high absortive cellulose film(CF) originated from Styela clava tunic(SCT), the physicochemical properties included absorption was measured in CFs prepared under the various conditions. The highest absorption was observed for SCT-CF20 prepared from the cellulose solution dissolved at $80^{\circ}C$ for 20min, although the filtration treatment did not induce any significance alteration. Also, the absorption was higher in SCT-CF20-F prepared by the freeze drying than SCT-CF20-N(ambient air drying) and SCT-CF20-H(heat drying). The addition of porogen($NaHCO_3$) induced an increase of absorption in SCT-CF20-PF relative to SCT-CF20-F, while the number of interconnected porous structures was enhanced in SCT-CF20-PF. Furthermore, a high level of SK-MEL-2 cells viability was observed in SCT-CF20-PN and SCT-CF20-PF cultured group. These results show that SCT-CF may have high absorption and biocompatibility when prepared from SCT cellulose solution dissolved at $80^{\circ}C$ for 20min after addition of porogen and then subjected to freeze drying.

삼백초 건초 추출물의 간세포 보호 효과 연구 (Protective Effects of Saururus chinensis Baill Extracts on Liver Cell)

  • 하배진;하종명;이상현;이진영;박선이
    • 한국식품위생안전성학회지
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    • 제18권4호
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    • pp.177-182
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    • 2003
  • 삼백초가 $CCl_4$ 투여로 유발된 rat의 지질대사에 미치는 효과를 알아보기 위해 NCT, CTA, SCT군으로 각각 10마리씩 나누어 NCT군과 CTA군은 0.9% saline을 SCT군은 삼백초를 100 mg/kg이 되게 2주 동안 매일 복강내에 투여하였다. 15일째 $CCl_4$를 CTA군과 SCT군에 투여하였다. 희생시켜서 혈청과 간의 지질대사를 관찰한 결과는 다음과 같다. 1. 혈청 중의 AST와 ALT의 활성도에서 SCT군은 CTA군에 비교해서 각각 43.18%, 96.05% 억제되었다. 2. Total cholesterol에서 삼백초를 투여한 SCT군은 NCT군 비교해서 0.95배 증가하였으며, 혈청중의 HDL-cholesterol은 SST군이 CTA군과 비교해서 2.63배 증가하였고 90.00%로 억제되었다. LDL-cholesterol에서는 SCT군이 CTA군보다 0.73배 감소하였다. 3. 혈청중의 TG의 함량은 CTA군이 NCT군에 비해 1.53배 증가하였다. CTA군에 비해 SCT군은 0.93배 감소하였으며 19.00%로 억제되었다. 4. 간조직 중의 MDA량은 SCT군이 CTA군에 비해 0.85배 감소하였고, 33.00%의 억제율을 보였다.