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Evaluation of an oral moisture-checking device for screening dry mouth

Open Journal of Stomatology 2013年第8期3卷 440-446页

作者： Yosuke Fukushima Tetsuya Yoda Shoichiro Kokabu Ryuichiro Araki Tsubasa Murata Yoshimasa Kitagawa Ken Omura Shuji Toya Kayoko Ito Saori Funayama Hiroshi Iwabuchi kazuhiro asano Yutaka Imai Akihide Negishi Satoshi Yokoo Goichi Matsumoto Eiro Kubota Hideki Watanabe Mikio Kusama Kojiro Onizawa Takuya Goto Seiji Nakamura Ryuichi Nakazawa Kiyoshi Harada Takashi Fujibayashi Community Health Science Center Saitama Medical University Saitama Japan Department of Dentistry and Oral Surgery Tochigi National Hospital Tochigi Japan Department of Oral and Maxillofacial Surgery Division of Medicine Interdisciplinary Graduate School of Medicine and Engi- neering Univer-sity of Yamanashi Kofu and Tamaho Japan Department of Oral and Maxillofacial Surgery Dokkyo Medical University School of Medicine Tochigi Japan Department of Oral and Maxillofacial Surgery Faculty of Medicine Sai-tama Medical University Saitama Japan Department of Oral and Maxillofacial Surgery Institute of Clinical Medicine University of Tsukuba Tsukuba Japan Department of Oral and Maxillofacial Surgery Jichi Medical University Tochigi Japan Department of Oral and Maxillofacial Surgery Kanagawa Dental College Yokosuka Japan Department of Stomatology and Oral Surgery Gunma University Graduate School of Medicine Maebashi Japan Division of Gereatric Dentistry Niigata University Medical & Dental Hospital Niigata Japan Oral and Maxillofacial Surgery Dry Mouth Clinic The Nippon Dental University Niigata Hospital Niigata Japan Oral Diagnosis and Medicine Department of Oral Pathobiological Science Graduate School of Dental Medicine Hokkaido University Sapporo Japan Oral Surgery Department of Oral Restitution Division of Oral Health Sciences Graduate School Tokyo Medical and Dental University Tokyo Japan Section of Oral and Maxillofacial Oncology Division of Maxillofacial Diagnostic and Surgical Sciences Faculty of Dental Science Kyushu University Fukuoka Japan

Objective: This multicenter clinical study was to assess the clinical usability of an oral moisture-checking device in detecting the dry mouth patients and evaluating the optimal measurement site. Materials and Methods: The study group comprised 250 patients with dry mouth and 241 healthy volunteer subjects at 13 medical centers. This device was used to measure the moisture degrees of the lingual mucosa and the buccal mucosa. Subjective oral dryness, objective oral dryness, and saliva flow rates were also compared between the two groups. For statistical analysis, receiver-operating characteristic analysis was performed to calculate the area under the curve (AUC). Results: The moisture degree of the lingual mucosa was significantly lower in the dry mouth group (27.2 ± 4.9) than that in the healthy group (29.5 ± 3.1, AUC = 0.653). When a lingual mucosa moisture degree of 31.0 or higher was defined as normal, less than 27.0 as dry mouth, and 27.0 to less than 31.0 as borderline zone of dry mouth, both the sensitivity and the specificity for the diagnosis of dry mouth were close to 80%. Conclusion: These results suggest that the oral moisture-checking device is a usable screening device for dry mouth.

关键词： Dry Mouth Oral Moisture-Checking Device ROC Analysis

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Assessing mixing uniformity in microreactors via in-line spectroscopy

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Chinese Journal of Chemical Engineering 2024年第2期66卷 119-124页

作者： Shusaku asano Shinji Kudo Taisuke Maki Yosuke Muranaka kazuhiro Mae Jun-ichiro Hayashi Institute for Materials Chemistry and Engineering Kyushu UniversityKasuga 816-8580Japan Department of Chemical Engineering Graduate School of EngineeringKyoto UniversityJapan

Mixing behavior is critical for enhancing the selectivity of fast chemical reactions in microreactors.A high Reynolds number(Re)improves the mixing rate and selectivity of the reactions,but some exceptions of increasing side product yield with the higher Re have been *** study investigated the mixing uniformity in microreactors with in-line UV-vis spectroscopy to clarify the relationship between reaction selectivity and chaotic mixing with the higher Re.A colorization experiment of thymolphthalein in an acidic solution was conducted with an excess acid amount to the base to indicate a non-uniformly mixed ***-uniformity significantly increased with *** the same time,the degree of mixing,which was measured by a usual decolorization experiment,showed that the mixing rate increased with *** in-line analysis of the Villermaux-Dushman reaction during the mixing clarified that side product yield significantly increased with Re at around 300 and then decreased at around *** results suggest the compensation effect between the mixing uniformity and mixing rate on the selectivity of the mixing-sensitive *** mixing,characterized by a larger Re,can disturb mixing uniformity and,in some cases,decrease reaction selectivity.

关键词： Microreactor Villermaux-Dushman reaction In-line analysis Mixing Mass transfer Uniformity

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