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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳志傑(Chih-Chieh Chen) | |
dc.contributor.author | Po-Chin Chen | en |
dc.contributor.author | 陳柏欽 | zh_TW |
dc.date.accessioned | 2021-06-16T22:58:37Z | - |
dc.date.available | 2013-09-17 | |
dc.date.copyright | 2012-09-17 | |
dc.date.issued | 2012 | |
dc.date.submitted | 2012-08-08 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/64756 | - |
dc.description.abstract | 呼吸道疾病的傳染方是主要是藉由病人咳嗽或打噴嚏等微粒產生方式。近年來的研究指出,人體在平靜呼吸時可產生微粒,雖然其產生的機制和特性尚未確定,但是此微粒產生方式將造成呼吸道疾病在感染和控制策略上的重大改革。
為了模擬薄膜破裂機制和探討影響因子,建立單一薄膜產生系統。經HEPA過濾後的氣流連接到薄膜產生系統,可控制不同流量模擬不同的呼吸道風速;單一薄膜產生裝置,用來產生單一薄膜和使之破裂後產生微粒,此裝置可改變測試溶液的特性,探討溶液的表面張力和黏滯度對於微粒產生的影響,並可改變玻璃管管徑以模擬不同直徑的支氣管;監測系統,主要由凝結核微粒計數器(CPC)、氣動微粒分徑器(APS)和溫濕度計構成,APS和CPC量測因薄膜破裂而產生的微粒粒徑和總微粒數。 因薄膜破裂而產生之液滴粒徑和總微粒數會因為管道內的風速、管徑和溶液特性等參數的變異而改變。流速方面,則以3 cm/s為分界,分為高低風速區,總微粒數在不同風速區有不同趨勢;管徑的改變直接影響薄膜上溶液的體積,總微粒數因管徑變大而增加,換算成單位面積微粒產生量則在各管徑間無明顯差異;溶液的表面張力對於微粒的產生有顯著的影響,總微粒數因表面張力降低而增加,然而溶液的黏滯度對於產生量的影響並不顯著;利用加入0.9 %的食鹽水,增加模擬黏液的表面張力,能降低薄膜破裂微粒產生量,若實際運用於人體末端細小支氣管黏液,則需考慮食鹽水的霧滴粒徑和人體肺部沉積效應,表示若要改變人體末端支氣管黏液的表面張力,需長時間且大量的吸入0.9 %食鹽水液滴,造成實際執行上的困難和限制。 | zh_TW |
dc.description.provenance | Made available in DSpace on 2021-06-16T22:58:37Z (GMT). No. of bitstreams: 1 ntu-101-R98841002-1.pdf: 1182120 bytes, checksum: 7c736fe7806f1a973c870d930391a2ab (MD5) Previous issue date: 2012 | en |
dc.description.tableofcontents | 目錄
致謝 I 摘要 II Abstract III 目錄 V 表目錄 VII 圖目錄 VIII 第一章、研究背景與目的 1 1.1 研究背景 1 1.2 研究目的 2 第二章、文獻探討 3 2.1 呼吸系統構造 3 2.2 呼吸道黏液特性 4 2.3 呼出微粒機制探討 5 2.3.1 Turbulence induced aerosolization 5 2.3.2 Bronchiole Fluid Film Burst 6 2.4呼出微粒影響因子 7 第三章、研究方法 8 3.1 實驗系統 8 3.1.1 測試溶液的配置方式 8 3.1.2 單一薄膜產生系統 8 3.2 參數表 9 3.3 實驗儀器 10 第四章、結果與討論 13 4.1 單一薄膜產生系統 13 4.2 系統代謝時間 13 4.3 薄膜位於直管內的破裂高度 14 4.4 玻璃直管內流速變異 15 4.5 玻璃直管管徑差異 16 4.6 溶液特性 16 4.6.1 表面張力 17 4.6.2 黏滯度 18 4.7 微粒量測儀器計數比較 18 第五章、結論與建議 20 第六章、參考文獻 24 | |
dc.language.iso | zh-TW | |
dc.title | 單一薄膜破裂氣膠逸散之特性探討 | zh_TW |
dc.title | Characterization of aerosol emission from the burst of a single film | en |
dc.type | Thesis | |
dc.date.schoolyear | 100-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 林文印,蕭大智,陳友剛,鄭福田 | |
dc.subject.keyword | 人體呼出微粒,單一薄膜破裂,溶液特性, | zh_TW |
dc.subject.keyword | A single film bursting,Solution property,Exhaled breathing aerosol, | en |
dc.relation.page | 45 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2012-08-08 | |
dc.contributor.author-college | 公共衛生學院 | zh_TW |
dc.contributor.author-dept | 職業醫學與工業衛生研究所 | zh_TW |
顯示於系所單位: | 職業醫學與工業衛生研究所 |
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