• Title/Summary/Keyword: REMNANT

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FUV Emission-line Morphologies of the SNR G65.3+5.7

  • Kim, Il-Joong;Seon, Kwang-Il;Min, Kyoung-Wook
    • The Bulletin of The Korean Astronomical Society
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    • v.35 no.1
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    • pp.70.1-70.1
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    • 2010
  • We present the far-ultraviolet (FUV) emission line morphologies in the whole region of the supernova remnant G65.3+5.7 using the FIMS/SPEAR data. The morphologies of the C IV ${\lambda}{\lambda}1548$, 1551, $H2{\lambda}1608 $, He II ${\lambda}1640$, and O III] ${\lambda}{\lambda}1661$, 1666 lines appear to correlate clearly with the optical emission line images or the ROSAT X-ray (0.11-0.284 keV) image obtained in some of the previous studies. We found that a foreground dust cloud, resonant scattering, and incompleteness of radiative shocks have made the definite differences between the morphologies of the above FUV emission lines. We also present the FUV spectra and line intensities from a few sub-regions.

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The southeastern region of the Vela SNR

  • Kim, Il-Joong;Seon, Kwang-Il;Min, Kyoung-Wook
    • The Bulletin of The Korean Astronomical Society
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    • v.35 no.2
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    • pp.69.2-69.2
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    • 2010
  • We investigate the southeastern region of the Vela supernova remnant (SNR) in the multi-wavelength domains. This region is quite interesting because it includes the bullet feature D/D´ and another SNR (the Vela Jr.). The C IV $\lambda\lambda1548$, 1551 emission-line morphologies obtained from the FIMS/SPEAR data show that there are several local peaks of C IV on the bullet D/D´ and the Vela Jr. SNR. This may provide clues to direct interaction between both SNRs. Also, we found that the southeastern side of the Vela is in direct contact with an H-alpha ring feature whose central source seems to be a B-type star, HD 76161. The C IV emission peaks along this contact boundary. We investigate this interacting region in detail.

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Crystallinity of $Pb(Nb_{0.04}Zr_{0.28}Ti_{0.68})O_{3}$ capacitors on ferroelectric properties

  • Yang, Bee-Lyong
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.12 no.3
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    • pp.161-164
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    • 2002
  • Polycrystalline and epitaxial heterostructure films of $La_{0.5}Sr_{0.5}CoO_{3}/Pb(Nb_{0.04}Zr_{0.28}Ti_{0.68})O_{3}/La_{0.5}Sr_{0.5}CoO_{3}$ (LSCO/PNZT/LSCO) capacitors were evaluated in terms of low voltage and high speed operation in high density memory, using TiN/Pt conducting barrier combination. Structural studies for a high density ferroelectric memory process flow, which requires the integration of conducting barrier layers to connect the drain of the pass-gate transistor to the bottom electrode of the ferroelectric stack, indicate complete phase purity (i.e. fully perovskite) in both epitaxial and polycrystalline materials. The polycrystalline capacitors show lower remnant polarization and coercive voltages. However, the retention, and high-speed characteristics are similar, indicating minimal influence of crystalline quality on the ferroelectric properties.

Annealing-temperature Dependent Characteristics of PLZT Thin Films on ITO Coated Glass (ITO 기판에 제작된 PLZT 박막의 소성온도에 따른 특성)

  • Choi, Hyung-Wook;Jang, Nak-Won;Park, Chang-Yub
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.11 no.2
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    • pp.128-132
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    • 1998
  • 2/65/35 PLZT stock solution prepared by Sol-Gel processing was spin-coated on ITO coated glass and annealed by RTA(Rapid Thermal Annealing). The crystal structure of films was reported based on the observation of crystallization process and microstructure of the film fabricated at different fabrication condition. Films were crystallized into rhombohedral structure by annealing at $750^{\circ}C$ for 5 min. As the annealing temperature increased, the size of rosette structure of the films was grown up from $2.4{\mu}m$ to $15{\mu}m$, dielectric constant was increased, coercive field was decreased 33.82 kV/cm, remnant polarization was increased to 39.84 ${\mu}C/cm^2$ and Optical transmittance was decreased.

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Treatment of Differentiated Thyroid Cancer (분화된 갑상선암의 치료)

  • Shong, Young-Kee
    • 대한핵의학회:학술대회논문집
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    • 2002.05b
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    • pp.77-95
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    • 2002
  • During the last several decades, prognosis of differentiated thvroid cancers improved markedly, mainly due to refinement of surgical techniques and routine use of radioactive iodine. Total or neat-total thyroidectomy is to be performed as the first line of treatment. Routine remnant ablation just after surgery decreases recurrence and increases survival. After then patients are maintained on suppressive dose of thyroid hormone to keep endogenous TSH below normal. Regular follow-up of the patients with serum thyroglobulin measurement and iodine whole body scan after thyroid hormone withdrawal or under recombinant human thyrotropin stimulation select high risk patients with recurrence or metastatic disease and treatment with therapeutic dose of radioactive iodine prolongs survival and sometimes leads cure. Currently recommended diagnostic and therapeutic strategies, present controversies and future directions are discussed.

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Intradural Retroclival Chordoma

  • Choo, Yeon-Soo;Joo, Sang-Wook;Noh, Seung-Jin;Lee, Sun-Il
    • Journal of Korean Neurosurgical Society
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    • v.46 no.2
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    • pp.152-155
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    • 2009
  • A 43-year-old woman presented with dizziness, ataxia and right hearing difficulty. Her magnetic resonance images demonstrated an inhomogeneously contrast-enhanced large tumor growing into right cavernous sinus and Meckel's cave located totally within intradural retroclival region. She underwent retromastoid suboccipital craniotomy to resect the tumor mass and adjuvant gamma knife radiosurgery for remnant tumor at 1 month after operation. Adjuvant radiosurgery after surgical excision seems to be effective for the treatment of intradural extraosseous chordomas.

Penetration and Splitting of Optic Nerve by Tuberculum Sellae Meningioma

  • Park, Seong-Cheol;Lee, Sang Hyung
    • Journal of Korean Neurosurgical Society
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    • v.59 no.5
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    • pp.525-528
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    • 2016
  • Preservation of the optic nerves is an important issue in the resection of tuberculum sellae meningiomas. We report the case of a patient whose optic nerve was penetrated by a tuberculum sellae meningioma. During surgery, a bulging tumor was found to penetrate the right optic nerve. The tumor was gross totally removed, including tumors bulging through the optic nerve. Two trunks of the split optic nerve were preserved. The penetrated shape of the optic nerve may lead to misjudgment and its damage. Divided trunks of optic nerves are difficult to recognize and may be confused for the tumor capsule, because they may be thinned and seem to contain tumors. In addition, a single trunk may be confused for the whole nerve; thus, the other trunk may be easily damaged if not dissected cautiously. Treatment strategy according to the remnant visual acuity was suggested.

Arthroscopic Footprint Reconstruction of Bursal-side Delaminated Rotator Cuff Tears using the Suture-bridge Technique

  • Kim, Kyung-Cheon;Rhee, Kwang-Jin;Shin, Hyun-Dae;Byun, Ki-Yong;Yang, Jae-Hoon;Kim, Dong-Kyu;Kim, Pil-Sung
    • The Academic Congress of Korean Shoulder and Elbow Society
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    • 2009.03a
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    • pp.210-210
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    • 2009
  • For a bursal-side retracted laminated rotator cuff tear, simple repair of the retracted bursal-side rotator cuff might be insufficient because the repaired tendon could remain as an intratendinous tear of the rotator cuff. We present a repair method for intratendinous rotator cuff tears using the suture-bridge technique. We believe that this method helps to preserve the remnant rotator cuff tendon without tissue damage and restores the normal rotator cuff footprint in bursal-side delaminated rotator cuff tears.

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Giant cell tumor arising from the rib - A case report- (늑골에서 발생한 골 거세포종 -1예 보고-)

  • Ju, Hong-Don;Park, Gyeong-Sin;Im, Seung-Pyeong
    • Journal of Chest Surgery
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    • v.24 no.10
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    • pp.1024-1027
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    • 1991
  • We experienced a case of giant cell tumor arising from the right 2nd rib in the diagnostic and therapeutic thoracotomy at our department of Thoracic and Cardiovascular Surgery, Chungnam Univ. Hospital in May 3rd, 1991. The reports of this tumor are very rare and are known to have the incidence of 1 percent or less of all giant cell bone tumor. The tumor of the right 2nd rib, infant head-sized, covered with parietal pleura was invaded into the vertebra on operation finding. The tumor was resected partially[three fourths] and revealed to be the giant cell tumor on pathologic finding. At now, the patient is taking the radiotherapy to achieve the therapeutic goal to the remnant tumor.

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Hemostasis of Anastomotic Site by Wrapping with Artificial Vascular Graft (대동맥 치환술시 인조혈관을 이용한 문합부 지혈)

  • 송상윤;장원채;나국주;김상형;안병희
    • Journal of Chest Surgery
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    • v.34 no.8
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    • pp.648-650
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    • 2001
  • Bleeding from anastomotic site in operation for aorta has been troublesome, because it has influence on postoperative morbidity and mortality. Therefore, hemostasis is very important. We describe a simple and effective method for achieving hemostasis of the anastomotic site in aortic surgery. By wrapping around anastomotic site with remnant artificial vascular graft, we have acquired good results.

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