• Clinical Endoscopy
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• 제57권3호
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• pp.335-341
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• 2024

Background/Aims: The coronavirus disease 2019 pandemic has affected the worldwide practice of upper gastrointestinal endoscopy. Here we designed a modified N95 respirator with a channel for endoscope insertion and evaluated its efficacy in upper gastrointestinal endoscopy. Methods: Thirty patients scheduled for upper gastrointestinal endoscopy were randomized into the modified N95 (n=15) or control (n=15) group. The mask was placed on the patient after anesthesia administration and particles were counted every minute before (baseline) and during the procedure by a TSI AeroTrak particle counter (9306-04; TSI Inc.) and categorized by size (0.3, 0.5, 1, 3, 5, and 10 ㎛). Differences in particle counts between time points were recorded. Results: During the procedure, the modified N95 group displayed significantly smaller overall particle sizes than the control group (median [interquartile range], 231 [54-385] vs. 579 [213-1,379]×10³/m³; p=0.056). However, the intervention group had a significant decrease in 0.3-㎛ particles (68 [-25 to 185] vs. 242 [72-588] ×10³/m³; p=0.045). No adverse events occurred in either group. The device did not cause any inconvenience to the endoscopists or patients. Conclusions: This modified N95 respirator reduced the number of particles, especially 0.3-㎛ particles, generated during upper gastrointestinal endoscopy.

• Bulletin of the Korean Chemical Society
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• 제24권5호
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• pp.623-626
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• 2003

Nematophin and its analog incorporating tryptamine unit have been isolated and characterized from strain XRPC of a symbiotic bacterium Xenorhabdus nematophilus, which was newly isolated from Korean entomopathogenic nematodes. The stereoselective synthesis of these compounds was accomplished, and the relative configurations were determined. Nematophin exhibited potent antibacterial activities over several strains of methicillin-resistant S. aureus (MRSA) comparable to those of vancomycin.

• Asian-Australasian Journal of Animal Sciences
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• 제2권3호
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• pp.370-371
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• 1989

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2002년도 총회 및 추계학술발표회
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• pp.49.1-49
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• 2002

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2002년도 총회 및 추계학술발표회
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• pp.48-49
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• 2002

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2005년도 추계학술대회 및 한일 식물생명공학 심포지엄
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• pp.196-196
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• 2005

• 한국작물학회:학술대회논문집
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• 한국작물학회 2001년도 춘계 학술대회지
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• pp.240-241
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• 2001

• 한국작물학회:학술대회논문집
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• 한국작물학회 2001년도 춘계 학술대회지
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• pp.66-67
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• 2001

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2000년도 제29회 국제학술심포지움 및 추계학술대회
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• pp.24-24
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• 2000

• 한국동물학회:학술대회논문집
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• 한국동물학회 1999년도 한국생물과학협회 학술발표대회
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• pp.276.2-276
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• 1999

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