• 제목/요약/키워드: Burn through

검색결과 241건 처리시간 0.027초

Computer용 Monitor 완제품의 Burn-in 최적화에 관한 연구 (A Study on the Burn-in Optimization of Computer Monitor)

  • 박종만
    • 품질경영학회지
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    • 제23권4호
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    • pp.148-156
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    • 1995
  • 많은 Buyer들이 품질의 기본조건으로 요구하는 완제품 Burn-in 시간은 실제 필요 이상으로 긴 시간일 수 있으며 생산자 입장에서 Cost, Delivery, Capacity 등의 제약으로 이행하기 어려운 경우가 종종 있다. 본 연구는 생산자에게 실무적으로 적용이 용이하고 Buyer에게 설득력있는 최적 Burn-in 시간 근거를 제시할 수 있도록, 구간개념과 Curve Fitting 방법을 적용하여 최적 Burn-in 시간을 추정하고 시간대별 Reliability를 산출 비교해 봄으로서 생산자 입장에서 Burn-in 시간을 결정하고 Reliability 추정 Model을 결정해 갈 수 있도록 하였다. 향후 제시된 Burn-in 시간의 최적여부는 Field Data로부터 검증되어야 할 것이다.

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한의 단독 치료를 통한 화상환자 통증 완화 치험 1례 증례 보고 (A Case Report of Pain Relief for Burn Patient through only Korean Medicine)

  • 권중철;나삼식;장성진;이재흥
    • 대한의료기공학회지
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    • 제20권1호
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    • pp.104-117
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    • 2020
  • Objective : The purpose of this study is to report that Korean Medicine treatment is effective in treating pain in burn patients. Results : We effectively reduced the pain that occurred after the end of the burn treatment through Korean Medicine such as multiple acupuncture, cupping, Sugi therapy, and external salve. VAS(Visual Analog Scale) values were reduced from 8 to 2 after about 23 days of treatment. Conclusions : This report shows that there was no special effect on dermatology treatment for pain that occurred after the end of treatment of burn patient, but it can also be excellent through Korean Medicine alone. It's only one case, so it cannot be determined that Korean Medicine for a burn is excellent. but if more excellent burn treatment of Korean Medicine is reported continuously, it will prove its validity. Therefore, it is hoped that more case reports and studies on burn treatments will be done in the future.

패혈증이 의심되는 화상환자에서 Procalcitonin이 사망률 예측인자로서의 역할 (Procalcitonin as a Predictor of Mortality in Burn Patients with Suspected Sepsis)

  • 김인;김도헌
    • 대한화상학회지
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    • 제23권2호
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    • pp.37-41
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    • 2020
  • Purpose: The purpose of this study was to investigate the usefulness of Procalcitonin (PCT) as a predictor of mortality in patients with burn sepsis, which is closely related to mortality. Methods: A retrospective study was conducted on 912 PCT patients diagnosed with burn sepsis in patients who survived fluid resuscitation for at least 3 days, aged 18 years or older who were admitted to Burn Intensive Care Unit (BICU) of Hallym University Hangang Sacred Heart Hospital from January 2008 to December 2018. Results: Compared with the surviving group, TBSA (31%:65%), Inhalation (59.66%:74.23%) and ABSI (8 points:12 points) were statistically significantly higher in the death group. Looking at the changes in PCT levels in each survival and death group from Week 1 to Week 4, there was a statistically significant difference in PCT levels in the survival and death groups each week (P<0.001). Although there were statistical differences between the survival and death groups in each state (P<0.001), there was no difference in PCT values for each state in both groups (P=0.090). Conclusion: In burn patients suspected of sepsis, the use of PCT is useful for predicting survival and death. It is necessary to conduct research based on prospective study through systematization of measurement standards and data from multiple institutions to increase the utilization of PCT through research that complements the limitations.

고압전기화상 환자에서 손바닥에 비골동맥천공지유리피판수술과 등의 이물질제거수술: 증례 보고 (Peroneal Artery Perforator Free Flap on the Palm and Removal of Back Foreign Body in High Voltage Electrical Burn Patient: A Case Report)

  • 정승원;이승제
    • 대한화상학회지
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    • 제22권2호
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    • pp.58-65
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    • 2019
  • Wound caused by high-tension electrical burns is difficult to manage because the wound is deep and complex. The wound is progressively necrotic due to microvascular injury resulting in deep tissue exposure. So, coverage of the wound at the entry point and the exit point is cumbersome, often requiring flap coverage. We experienced a case of one patient for peroneal artery perforator free flap coverage on the palm of the right hand of the entry point of electrical burn. The left foot wound of electrical exit point was covered by full thickness skin graft. Also a small wound was on the left side of the lower back was the exit point of electrical burn. The lower back wound was healed and recurred repeatedly after burn. On postburn day 6 month, through the radiologic exam, metal shadow was identified in the left gluteus muscle forming chronic sinus. We explored the wound of sinus and a foreign body was identified in the sac as multi braid wires thin as hair. According to the patient's past history, we suspected that the back wound was caused by electrical burn injury through the wires.

상피세포 성장인자의 경피흡수: 정상피부, 각질제거피부 및 화상피부에 있어서 (Percutaneous Absorption of Recombinant h-EGF through Normal, Stripped and First-Degree Burn Skin)

  • 조애리;이정욱;안병락;정주영;고여욱;심창구
    • Journal of Pharmaceutical Investigation
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    • 제26권1호
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    • pp.29-32
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    • 1996
  • In vivo and in vitro skin permeation of $recombinant^{125}$ I-EGF through normal, stripped and the first degree burn skin were studied. The in vitro skin permeation rate through the first degree burn skin $(296\;cpm/cm^2/hr)$ and the stripped skin $(1131\;cpm/cm^2/hr)$ were 3.5 times and 13 times higher, respectively, as compared with the one through normal skin. In vivo absorption study with the first degree burn skin, the peak concentration of EGF in the skin was achieved at 1-3 hr and decreased afterward up to 8 hr with an elimination constant of $1.31{\times}10^{-3}\;g/ml/hr$. To investigate the higher elimination rate of EGF in burn skin, binding and metabolism studies were conducted. No significant metabolism of EGF in burn skin $(100^{\circ}C,\;5-second\;burning)$ was observed. With the presence or unlabelled-EGF $^{125}I-EGF$ permeation through the burn skin showed higher permeation rate than the one without unlabelled-EGF. The result nay indicate that EGF-receptor binding play a role in determining the skin permeation rate.

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알루미늄 박판에 대한 AC 펄스 MIG 용접에서 극성가변의 효과 (The effect of variable polarity on AC pulse Welding for sheet Al metal)

  • 공현상;임성룡;김기정;조상명
    • 한국마린엔지니어링학회:학술대회논문집
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    • 한국마린엔지니어링학회 2001년도 추계학술대회 논문집(Proceeding of the KOSME 2001 Autumn Annual Meeting)
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    • pp.88-91
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    • 2001
  • New type of vehicles made from thin aluminum alloy are under rapid development and some product are already on the market, but when welding sheet metal joint of aluminum alloy, the main problem are burn-through by the high heat input. The purpose of this study, it is to prevent the burn-through and to shallow penetration that AC pulse welding has diminish the penetration and to lower the droplet temperature at Al sheet metal welding. In this study, we observed the bead appearance and whether it was appeared burn through or not , as the variation of the root gap in the lap and butt-joint welding process.

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선호 음악요법이 화상환자의 드레싱 시 상태불안과 통증에 미치는 효과 (The Effects of Self-Selected Music on Anxiety and Pain during Burn Dressing Changes)

  • 손정태;김선화
    • 대한간호학회지
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    • 제36권1호
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    • pp.159-168
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    • 2006
  • Purpose: The purpose of this study was to examine the effects of music therapy on state anxiety and pain among patients undergoing burn dressing changes. Method: A convenience sample of 32 adult burn patients who were eligible and provided consent were included in the study which was a quasi-experimental study of a nonequivalent control group pretest-posttest design. Fifteen patients in the control group received the routine burn dressing changes but 17 patients in the experimental group listened to self-selected music through headphones connected to a CD player during burn dressing changes for three days. All subjects of the music group chose the type of music that would relax them. Before and after burn dressing changes, subjects completed the State Anxiety Inventory and self-report of pain scores. Result: There was a significant reduction in state anxiety before and after burn dressing changes in those who received music therapy in contrast to those who did not receive music therapy. The music group reported lower pain scores before and after burn dressing changes than did the non-music group. Conclusion: These findings indicate that music therapy composed of self-selected music is a valuable intervention for the treatment of pain and anxiety in patients undergoing burn dressing changes.

Optimal Burn-In for a Process with Weak Components

  • Kim, Kuinam J.;Boardman, Thomas J.
    • 품질경영학회지
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    • 제24권4호
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    • pp.70-89
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    • 1996
  • This paper discusses an optimal burn -in procedure to minimize total costs based on the assumption that some of the components are weak for stress and deteriorate faster than the main components. The procedure will define the costs of burn-in errors. An ideal burn-in consists of process in which all weak (substandard) components and no main (standard) components fail. In practice, the burn-in errors could occur for some reasons. For example, it is impossible to eliminate all weak components through burn-in, due to a nonzero proportion of defectives of the components. Probability model and cost function model are formulated to find the optimal burn-in time that minimizes the expected total cost. Several examples are included to show how to use the results.

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화상 반흔에서 생긴 궤양을 동반한 이소성 석회화의 치료 (Treatment of Heterotopic Calcification with Ulceration in Burn Scar)

  • 강상구;이종욱;고장휴;서동국;최재구;장영철
    • Archives of Plastic Surgery
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    • 제37권4호
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    • pp.415-420
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    • 2010
  • Purpose: Heterotopic calcification is a pathological event in which deposits of calcium salts build up, usually in the joint area or soft tissues. It can occur under many conditions and in some rare cases may develop in burn scars. In particular, ulcerations in burn scars accompanied by heterotopic calcification are difficult to treat through conservative treatment. This study reports methods for accurate diagnosis and adequate treatment of ulceration in burn scars accompanied by heterotopic calcification. Methods: Fourteen patients who visited our hospital from March 2008 to January 2010 were subjected to this study. Their sex, age, modes of burn, degree, TBSA (%), ulcerated area, the time of occurrence of the ulcerations in the burn scars were investigated. In addition, radiological examination and biopsy was performed to diagnose heterotopic calcification. Results: Among the 14 cases, 6 were male and 8 were female. The average age of the patients was 48.2 (27 - 69 yrs). As for the mode of burn, 11 were flame burns and 3 were scalding burns. The average time of occurrence of the ulcerations in the burn scars was 4.5 months. The ulcerated areas were situated in the legs in 12 cases, arms in 1 case, and torso in 1 case. The diagnosis was confirmed through X-ray and biopsy, and skin graft was performed after wide excision. Conclusion: Diagnosis of the ulceration in burn scars accompanied by heterotopic calcification is possible through radiological and pathologic studies. Surgical treatment is the most reliable method of treatment, and we chose to perform skin graft after wide excision. Also, we learned that the complete removal of the calcified tissue and the inflammatory fibrotic tissues is crucial in preventing recurrence. Also, in contrast to Marjolin's ulcer, heterotopic calcification had a small size, little or no granulation tissue, and lacked fungating type ulceration. Therefore, favorable prognosis could be achieved through adequate treatment.

플랫폼에 따른 다큐멘터리 서사전략 연구: 를 중심으로 (Documentary Narrative Strategies by Platform: Focusing on )

  • 권상정;장우진
    • 한국콘텐츠학회논문지
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    • 제21권5호
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    • pp.949-960
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    • 2021
  • 사실에 기반한 다큐멘터리는 그 시대의 정신을 담고 있을 뿐 아니라 기술과 매체의 변화에 따라 다양하게 변모해왔다. 본 연구는 유튜브의 오리지널 다큐멘터리가 매체의 특징을 대변하는 역할을 하고 있다는 전제하에 를 분석했다. 유튜브 오리지널 다큐멘터리 는 유튜브에서 공개된 후 다큐멘터리 영화로 재편집해 개봉, 동일한 촬영 소스를 가지고 유튜브냐 영화냐에 따라 다르게 편집, 서술되고 있어 유튜브 다큐멘터리와 다큐멘터리 영화의 매체적 차이점을 확인할 수 있는 콘텐츠이다. 영화관 버전은 핸드헬드 촬영과 매끄러운 편집 위주로 3인칭 내레이션과 자막을 활용해 서사를 전개하고 있으며 유튜브 버전은 오디오 중심의 거친 편집, 인터뷰와 배경음악을 중심으로 서사를 전개하고 있다는 차이점을 보였다. 이를 통해 유튜브 버전은 개인적이고 직접적인 표현 방식을 통해 친밀감을 강화하는 반면 영화관 버전은 공식적이며 간접적인 표현 방식을 통해 객관성을 강화하고 있음을 확인할 수 있다.