• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1999년도 추계학술대회 논문집
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• pp.362-365
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• 1999

This paper describes on thinning SDB SOI substrates by SDB technology and electrochemical etch-stop. The surface of the fabricated SDB SOI substrates is more uniform than that grinding or polishing by mechanical method, and this process is possible to accurate SOI thickness control. During Electrochemical etch-stop, leakage current versus voltage curves were measured for analysis of the open current potential (OCP) point and the passivation potential (PP) poin and determinated to anodic substrates were analyzed by using AFM and SEM, respectivelv.

• 전자공학회논문지
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• 제50권6호
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• pp.305-310
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• 2013

본 연구는 Si/$SiO_2$/Si-sub 구조의 SDB(silicon-direct-bonding) 웨이퍼를 이용한 고온용 압력센서의 제작 및 특성을 연구한 것이다. 압력센서는 SDB 웨이퍼의 첫 번째 층의 단결정 실리콘을 이용하여 압저항을 제작하기 때문에 감도가 우수하며, 두 번째 층의 산화막으로 압저항과 실리콘 기판을 절연 분리하여, 일반적인 실리콘소자의 사용 온도 한계인 $120^{\circ}C$ 이상의 고온에서도 사용이 가능하다. 제작된 압력센서는 고감도의 압력감도 및 센서 출력의 직선성 및 히스테리시스 특성이 매우 우수함을 알 수 있었다.

• 대한미생물학회지
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• 제22권3호
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• pp.301-307
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• 1987

A total of 42 strains of Candida albicans were examined for susceptibility to three antifungal agents, amphotericin B(AMB), 5-fluorocytosine(5-FC), and ketoconazole(KTZ), using defined medium, synthetic amino acid medium-fungal(SAAM-F), supplemented yeast nitrogen base(SYNB) and undefined medium Sabouraud's dextrose broth(SDB) and Kimmig broth media. A tube dilution method was used with minimum inhibitory concentrations(MICs) determined after incubation for 24 hour and 48 hours. All testes were performed in duplicate. In general, MICs were more reproducible after 48 hour of incubation. Forthermore, MICs determined after incubation for 48 hours were significantly higher than those determined after 24 hours. The actural MICs obtained with the different antifungal agents were clearly influenced by the test medium used. The rank order of AMB MICs according to the test medium was as follows: SAAM-F>SYNB>SDB>Kimmig broth. With 5-FC, the following pattern was observed: SYNB>SAAM-F>SDB>Kimmig borth. For ketoconazole, the MICs according to the test medium was SAAM-F>SDB>SYNB> Kimmig broth. In amphotericin B, the MICs mean value with the test medium was as follows: SDB, 0.24 mcg/ml; Kimmig broth, 0.29 mcg/ml; SYNB, 0.21 mcg/ml and SAAM-F, 0.15mcg/ml. The actural value of 5-FC was; SDB, 37.20 mcg/ml; Kimmig broth, 67.41mcg/ml; SYNB, 21.29 mcg/ml and SAAM-F, 24.61 mcg/ml and in ketoconazole, the MICs value was; SDB, 1.83 mcg/ml; Kimmig broth, 4.08 mcg/ml; SYNB, 1.95 mcg/ml and SAAM-F, 1.41 mcg/ml. The results of this investigation suggested that broth dilution susceptibility testing of yeast and yeast-like fungi are best performed with an incubation period of 48 hours. Furthermore, medium composition can significantly influence the results of such testing.

• 대한소아치과학회지
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• 제47권4호
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• pp.377-388
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• 2020

이 연구의 목적은 수면호흡장애를 가진 어린이들을 선별하기 위해 휴대용 간이수면검사를 이용한 무호흡 저호흡 지수(apneahypopnea index, AHI)를 기준으로, 치과 진료실에서 사용 가능한 측모두부계측 방사선 사진, 임상 검사, 소아수면설문지(pediatric sleep questionnaire, PSQ)에서 유용한 수치들을 찾아내고 평가하는 것이었다. 교정치료를 위해 전북대학교 소아치과에 내원한 5 - 10세의 어린이들을 대상으로 하였다. 총 61명이 이 연구에 포함되었으며, AHI 값이 1보다 크게 나타난 어린이들을 SDB군으로, 1 이하로 나타난 어린이들은 정상군으로 분류하였다. 61명의 어린이 중 49(80%)명이 SDB군에 포함되었다. SDB군과 정상군과의 통계 분석 결과, 휴대용 간이수면검사의 ODI(oxygen dehydration index)와 코골이 시간, 설문지를 통한 PSQ scale, 측모두부계측 방사선 사진에서 아데노이드 비대율과 하악평면에서 설골까지의 거리 그리고 gonial angel이 통계적으로 유의한 차이를 보였다. 이 연구를 통해 잠재적인 SDB 환자를 선별해내기 위해 측모두부계측 방사선 사진을 통한 아데노이드 비대, 설골의 위치, gonial angle과 소아수면설문지를 평가하는 것이 유용할 것으로 보인다.

• 전자공학회논문지A
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• 제31A권1호
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• pp.71-76
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• 1994

Schottky diodes have been fabricated using the SDB wafer, and their characteristics have been investigated. For comparison, conventional planar and etched most structure were made on the same substrate. The ideality factor and barrier height of the fabricated devices are found to be 1.03 and 0.77eV, respectively. Breakdown volttge of the etched mesa Schottky diode has been increased to 180V. whereas it is 90V for the planar diode. Schottky diode with an etched mesa exhibits twice improvement in breaktown voltage.

• E2M - 전기 전자와 첨단 소재
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• 제8권2호
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• pp.165-170
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• 1995

This paper describes the fabrication and characteristics of a Si Hall sensor fabricated on a SOI (Si-on-insulator) structure. The SOI structure was formed by SDB(Si-wafer direct bonding) technology and the insulator of the SOI structure was used as the dielectrical isolation layer of a Hall sensor. The Hall voltage and sensitivity of the implemented SDB SOI Hall sensors showed good linearity with respect to the applied magnetic flux density and supplied current. The product sensitivity of the SDB SOI Hall sensor was average 600V/A.T and its value has been increased up to 3 times compared to that of bulk Si with buried layer of 10.mu.m. Moreover, this sensor can be used at high-temperature, high-radiation and in corrosive environments.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 C
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• pp.1267-1269
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• 1997

본 논문에서는 SDB(Silicon Direct Bonding) 기술을 적용하여 빠른 스위칭 속도 및 낮은 도통 전압을 갖는 1200v 10A n-ch IGBT를 제작하였다. 기존의 epi wafer를 이용한 IGBT 제작시 스위칭 속도 개선을 위한 전자조사 방법을 사용하지 않고 buffer의 농도를 증가시켜 아노드 영역의 정공 주입 효율을 제어하여 90ns의 스위칭 속도를 가지며, 2.0V의 도통전압을 갖는 IGBT를 구현하였으며, SDB IGBT 제작시 bonding 계면의 문제 및 표면의 particle 및 결함이 소자의 전기적 특성에 미치는 영향을 고찰하였으며, 이를 실험 결과와 비교 평가하였다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제38권
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• pp.47.1-47.8
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• 2016

Background: The paradigm of tonsillectomy has shifted from a treatment of recurrent throat infection to one of multi-discipline management modalities of sleep-disordered breathing (SDB). While tonsillectomy as a treatment for throat problems has been performed almost exclusively by otorhinolaryngologists, tonsillectomy as a part of the armamentarium for the multifactorial, multidisciplinary therapy of sleep-disordered breathing needs a new introduction to those involved in treating SDB patients. This study has its purpose in sharing a series of tonsillectomies performed at the Seoul National University Dental Hospital for the treatment and prevention of SDB in adult patients. Methods: Total of 78 patients underwent tonsillectomy at the Seoul National University Dental Hospital from 1996 to 2015, and 23 of them who were operated by a single surgeon (Prof. Jin-Young Choi) were included in the study. Through retrospective chart review, the purpose of tonsillectomy, concomitant procedures, grade of tonsillar hypertrophy, surgical outcome, and complications were evaluated. Results: Twenty-one patients diagnosed with SDB received multiple surgical procedures (uvulopalatal flap, uvulopalatopharyngoplasty, genioglossus advancement genioplasty, tongue base reduction, etc.) along with tonsillectomy. Two patients received mandibular setback orthognathic surgery with concomitant tonsillectomy in anticipation of postoperative airway compromise. All patients showed improvement in symptoms such as snoring and apneic events during sleep. Conclusions: When only throat infections were considered, tonsillectomy was a procedure rather unfamiliar to oral and maxillofacial surgeons. With a shift of primary indication from recurrent throat infections to SDB and emerging technological and procedural breakthroughs, simpler and safer tonsillectomy has become a major tool in the multidisciplinary treatment modality for SDB.

• Asian-Australasian Journal of Animal Sciences
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• 제30권12호
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• pp.1733-1738
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• 2017

Objective: Different dry-aging methods [traditional dry-aging (TD), simplified dry-aging (SD), and SD in an aging bag (SDB)] were compared to investigate the possible use of SD and/or SDB in practical situations. Methods: Sirloins from 48 Hanwoo cows were frozen (Control, 2 days postmortem) or dry-aged for 28 days using the different aging methods and analyzed for chemical composition, total aerobic bacterial count, shear force, inosine 5′-monophosphate (IMP) and free amino acid content, and sensory properties. Results: The difference in chemical composition, total aerobic bacterial count, shear force, IMP, and total free amino acid content were negligible among the 3 dry-aged groups. The SD and SDB showed statistically similar tenderness, flavor, and overall acceptability relative to TD. However, SDB had a relatively higher saleable yield. Conclusion: Both SD and SDB can successfully substitute for TD. However, SDB would be the best option for simplified dry-aging of low-marbled beef with a relatively high saleable yield.

• 대한소아치과학회지
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• 제46권1호
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• pp.119-126
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• 2019

수면호흡장애는 구강악안면 근육 기능부전을 유발하여 안모의 형태이상 및 부정교합을 유발할 수 있다. 소아치과 영역에서 수면호흡장애의 조기 진단과 치료는 이러한 합병증을 차단하여 정상적인 안모 성장을 유지할 수 있다는 점에서 중요하다. 수면호흡장애의 치료법 중에 하나로 근기능요법이 있으며 기성 근기능 장치가 보조적으로 사용될 수 있다. 본 증례들에서는 수면호흡장애가 있는 부정교합 환자들에게 기성 근기능 장치를 사용하여 수면호흡장애를 해소하는 결과를 얻었기에 보고하는 바이다. 하지만 총생의 개선 효과는 그 정도에 따라 차이가 발생할 수 있으므로 이에 대한 한계점은 고려할 필요가 있다.