書誌事項
- タイトル別名
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- Changes in the shape of choanal openings and airflow rates during development
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The shape of the choanal openings were examined in 173 babies aged zero to six months using digital video fiberscope inserted via nose.<br>A numerical analysis and the fluid mechanics were then calculated for each recorded choanal opening. The choanal openings in one month old babies were a flat oval shape.<br>Vertical development vas faster than that of horizontal development, and the choanal openings changed from a flat oval to a round and finally a vertical oval shapes as the babies aged from two to four months. Both the air resistance and airflow ratio in the choanae can be calculated by Navier-Stoke's equation, if the choanae are assumed to be an oval tube. Using this equation, it was calculated that the air resistance ratio was one to five and the airflow ratio increased five times from neonates to six month old babies.
収録刊行物
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- 日本耳鼻咽喉科学会会報
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日本耳鼻咽喉科学会会報 103 (3), 188-192, 2000
一般社団法人 日本耳鼻咽喉科頭頸部外科学会
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詳細情報 詳細情報について
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- CRID
- 1390282679983485312
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- NII論文ID
- 10008574533
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- NII書誌ID
- AN00191551
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- ISSN
- 18830854
- 00306622
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- PubMed
- 10774186
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可