• 제목/요약/키워드: After 2017

검색결과 6,885건 처리시간 0.028초

Euro-6 대응 경유 차량의 NOx 저감율 분석 연구 (Research on the NOx Reduction Rate of Diesel Vehicle for Euro-6)

  • 강민경;권석주;서영호
    • 융복합기술연구소 논문집
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    • 제7권1호
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    • pp.15-18
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    • 2017
  • As emission gas regulation of deisel vehicles is strengthened to Euro-6, It becomes difficult to deal with NOx regulated value mainly by EGR without additional after-treatment system. In addition, RDE(Real Driving Emissions) test will be introduced after september 2017. Therefore, It is essential to develop the after-treatment of diesel vehicles which reduce NOx emissions. It is possible to use DOC, DPF, LNT or DOC, DPF and SCR as a after-treatment system for reducing NOx. However, It is expected that the SCR will be applied widely because LNT alone does not have sufficient NOx purification efficiency. In this study, It tried to analyze the efficiency of reducing NOx emissions during the mode test by attaching a NOx sensor to test vehicle. As a result, It was confirmed that NOx emissions was significantly reduce through the after-treatment system from engine. And the NOx reduction efficiency of SCR was about 4.5 times better than DOC, DPF.

The Effect of Low-Dose Nitroglycerin Ointment on Skin Flap Necrosis in Breast Reconstruction after Skin-Sparing or Nipple-Sparing Mastectomy

  • Yun, Min Ho;Yoon, Eul Sik;Lee, Byung-Il;Park, Seung-Ha
    • Archives of Plastic Surgery
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    • 제44권6호
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    • pp.509-515
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    • 2017
  • Background Skin flap necrosis is a common complication after mastectomy and breast reconstruction. It has been proven that nitroglycerin ointment, as a topical vasodilator, can decrease the rate of skin flap necrosis after mastectomy and breast reconstruction. However, nitroglycerin can cause several side effects, including headache, dizziness, and hypotension. The purpose of this study was to evaluate whether the application of a low dose of nitroglycerin ointment reduced the rate of skin flap necrosis in breast reconstruction after skin-sparing or nipple-sparing mastectomy. Methods A total of 73 cases of breast reconstruction after nipple-sparing and skin-sparing mastectomy at our institution from March 2012 to January 2017 were retrospectively studied. Of these patients, 52 received nitroglycerin ointment (4.5 mg) application to the skin around the nipple-areolar complex from August 2015 to January 2017, while 21 received fusidic acid ointment from March 2012 to August 2015. The number of patients who experienced necrosis of the breast skin flap was counted in both groups. Results Skin flap necrosis developed in 2 (3.8%) patients who were treated with nitroglycerin ointment and 5 (23.8%) patients who did not receive nitroglycerin ointment treatment. Patients who did not receive nitroglycerin ointment treatment had a significantly higher risk of mastectomy skin flap necrosis than patients who did (odds ratio=7.81; 95% confidence interval, 1.38 to 44.23; P=0.02). Conclusions Low-dose nitroglycerin ointment administration significantly decreased the rate of skin flap necrosis in patients who underwent breast reconstruction after skin-sparing or nipple-sparing mastectomy, without increasing the incidence of the side effects of nitroglycerin.

소프트웨어 개발단계 Use-After-Free 보안약점 제거방안 연구 (A Study on the Remove Use-After-Free Security Weakness)

  • 박용구;최진영
    • 정보처리학회논문지:컴퓨터 및 통신 시스템
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    • 제6권1호
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    • pp.43-50
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    • 2017
  • 최근 컴퓨터 시스템 내부에 존재하는 웹 브라우저, 운영체제 커널 등에서 Use-After-Free 보안문제가 지속적으로 발생하고 있다. 해당 보안약점은 기존의 보안약점 탐지방법으로 제거하기 어려우며 소프트웨어 내부에 해당 보안약점이 존재할 경우 내부 보안에 심각한 영향을 미친다. 본 논문에서는 소프트웨어 개발 과정에서 해당 보안약점을 제거하기 위한 방안을 연구하였다. 이 과정에서 해당 보안약점의 발생 원인을 정리하고 이를 제거하기 위한 방법을 제시한다.

Radiation recall dermatitis triggered by sorafenib after radiation therapy for hepatocellular carcinoma

  • Kim, Gwi Eon;Song, Hee-Sung;Ahn, Ki Jung;Kim, Young Suk
    • Radiation Oncology Journal
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    • 제35권3호
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    • pp.289-294
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    • 2017
  • Sorafenib is widely used for unresectable and metastatic hepatocellular carcinomas. Radiation recall dermatitis (RRD) is an acute inflammatory reaction confined to previously irradiated skin that occurs after the administration of certain drugs. RRD after sorafenib treatment is rare; five cases have been reported thus far. We describe a 44-year-old man irradiated for chest wall bone metastasis from hepatocellular carcinoma. Eight days after radiotherapy completion, systemic therapy for metastatic hepatocellular carcinoma was initiated with sorafenib treatment. Eleven days after starting sorafenib, the patient complained of erythematous rash with pruritus in the chest wall, in a location consistent with the previous radiation field. Sorafenib was continued at the same dose, despite the RRD. The skin reaction subsided over the next 2 weeks without any medical intervention.

Myoclonic status epilepticus in hypoxic ischemic encephalopathy which recurred after somatosensory evoked potential testing

  • Kim, Seongheon;Kim, Yeshin;Kim, Sunghun;Lee, Seo-Young
    • Annals of Clinical Neurophysiology
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    • 제19권2호
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    • pp.136-140
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    • 2017
  • A 77-year-old male with amyotrophic lateral sclerosis had a hypoxic event. After resuscitation, generalized myoclonus appeared and resolved after two days. Five days after the hypoxic event, myoclonic seizures re-emerged right after performing a somatosensory evoked potential and persisted for ten days. Electroencephalogram revealed frequent bi-hemispheric synchronous spike and waves in the central areas. We suggest that somatosensory evoked potential testing may trigger myoclonic status epilepticus. Underlying cortical degeneration associated with amyotrophic lateral sclerosis could attribute to this phenomenon.

Prolonged reflex bradycardia after occlusion of patent ductus arteriosus with an Amplatz canine duct occluder in a dog

  • Ro, Woong-Bin;Kang, Min-Hee;Lee, Chang-Min;Kim, Seung-Gon;Park, Hee-Myung
    • 대한수의학회지
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    • 제57권1호
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    • pp.51-54
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    • 2017
  • A 9-month-old intact male Maltese dog (1.52 kg) was diagnosed with a patent ductus arteriosus (PDA). Transcatheter occlusion of the PDA was performed by using the Amplatz canine duct occluder (ACDO). After occlusion, reflex bradycardia occurred and lasted for at least 15 h with normal systolic arterial pressure and slightly increased diastolic arterial pressure. The bradycardia slowly resolved, and the heart rate was normal in re-examinations after 7 and 30 days. This is the first case of reflex bradycardia after ACDO implantation, in which the bradycardia continued for a long time, even after recovery from anesthesia.

后脱欧时代英国的发展走向 (The development of Britain after the European era)

  • 주천
    • 산업진흥연구
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    • 제2권1호
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    • pp.113-115
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    • 2017
  • A brief analysis of the impact of the UK off Europe paper on both the positive and negative aspects. For example, in the UK after the EU referendum, out of the shackles of the UK's European Union in the short term, away from the impact of refugees. On the contrary, however, it can have a tremendous impact on the UK's foreign trade and financial industry, while the UK's International will be influenced by the West.

Rectus Sheath Hematoma Caused by Noncontact Strenuous Exercise

  • Kim, Gil Hwan;Kim, Jae Hun;Kim, Ho Hyun
    • Journal of Trauma and Injury
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    • 제30권4호
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    • pp.227-230
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    • 2017
  • Rectus sheath hematoma (RSH) is an uncommon but well-documented clinical condition. It is usually caused by direct trauma or anticoagulation, although there are many other causes. However, RSH after noncontact strenuous exercise is very rare. We present a rare case of RSH after playing volleyball without direct trauma that was successfully treated by angiographic embolization.