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Usefulness of continuous suction mouthpiece during esophagogastroduodenoscopy: A single-center, prospective,randomized study

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World Journal of Gastrointestinal Endoscopy 2013年第10期5卷 508-513页

作者： Takao Maekita Jun Kato Yukihiko Nakatani Shotaro Enomoto Ema Takano Masahiro Tsuji Tsuyoshi Nakaya Kosaku Moribata Yosuke Muraki Naoki Shingaki Toru Niwa Hisanobu deguchi Kazuki Ueda Izumi Inoue Mikitaka Iguchi Hideyuki Tamai Masao Ichinose Department of Gastroen-terology School of Medicine Wakayama Medical UniversityWakayama Department of Internal Medicine Nakaya HospitalWakayama

AIM: To develop a new continuous suction mouthpiece(CSM) and evaluate its usefulness for screening esophagogastroduodenoscopy(EGD).METHODS: A total of 196 patients who were scheduled to undergo screening EGD were assigned to one of two groups: a group using the CSM and a group using a conventional mouthpiece. Extent of salivary flow,frequency of saliva suction, number of choking episodesduring the examination, and incidence of aspiration pneumonia after the examination were evaluated and compared between the two groups. Adverse events during and after EGD were also examined. In addition, the oral cavity was meticulously examined after the ***: The same number of patients was randomly allocated to each group. There were no significant differences between the two groups in sex, age,biopsy procedure, duration of procedure and depth of sedation. Aspiration pneumonia and other significant adverse events were not observed in either group. The grade of extent of salivary flow was significantly lower in patients with the CSM than in patients with the conventional mouthpiece(P < 0.001). Although there was no significant difference, less frequent suctioning and fewer choking episodes were observed in patients with the CSM than in patients with the conventional mouthpiece(P = 0.082 and P = 0.084, respectively). In addition, there were no patients in the CSM group who required saliva suctioning during the ***: Use of the CSM during screening EGD can reduce the extent of salivary flow. The device is expected to reduce complications and contamination with saliva.

关键词： Mouthpiece Esophagogastroduodenoscopy Aspiration Saliva Suction

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论樋口一叶小说的卷首插图与文中插图——从插图与作者一叶的关系说起

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国际比较文学（中英文） 2024年第3期7卷 70-84页

作者：出口智之李杰玲东京大学海南师范大学国际日本文化研究中心

樋口一叶是近代文学第二代的代表作家。樋口一叶发表的连载小说有许多有卷首插图和文中插图,她常常为小说插图而给插画家一些指示和构思。通过相关资料的分析可知,作家在执笔过程中,作品会与原来的构思产生不同,而产生不同之前的构思则... 详细信息

樋口一叶是近代文学第二代的代表作家。樋口一叶发表的连载小说有许多有卷首插图和文中插图,她常常为小说插图而给插画家一些指示和构思。通过相关资料的分析可知,作家在执笔过程中,作品会与原来的构思产生不同,而产生不同之前的构思则会保留在插图中。有时,一叶早在小说写好之前就已经通过草图对插画家提出自己的构思和要求,但在写作过程中却把原来构思的场景删除了。有时,插图和连载的小说并不完全相符,这种情况出现的原因是,小说和插图同时被读者接受,插图画上小说中没有写出的内容,可以引起读者的阅读兴趣和猜想,如此就可以起到双重的审美效果,在小说中省略而在插图中做出暗示这一方法在江户时代时不时被用到。在当时的文学界,作家在创作时不能仅仅考虑遣词造句,还需要考虑具有画面感的故事情节,如果不把插图和小说文字结合起来看的话,就无法正确把握作家创作的全貌。

关键词：樋口一叶小说插图卷首插图明治文学

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A case of chronic pancreatitis in which endoscopic ultrasonography was effective in the diagnosis of a pseudoaneurysm

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World Journal of Gastrointestinal Endoscopy 2012年第7期4卷 335-338页

作者： Kazuhiro Fukatsu Kazuki Ueda Hiroki Maeda Yasunobu Yamashita Masahiro Itonaga Yoshiyuki Mori Kosaku Moribata Naoki Shingaki Hisanobu deguchi Shotaro Enomoto Izumi Inoue Takao Maekita Mikitaka Iguchi Hideyuki Tamai Jun Kato Masao Ichinose Second Department of Internal Medicine Wakayama Medical University811-1 Kimiidera Wakayama City Wakayama 641-0012 Japan

Endoscopic ultrasonography (EUS) was performed on a patient being treated for chronic pancreatitis because a submucosal tumor was observed in the stomach during gastrointestinal endoscopy. As internal pulsa- tile blood flow on Doppler was present, the diagnosis of an aneurysm was made. The pseudoaneurysm of the left gastric artery was embolized with histoacryl and lipiodol and the splenic artery was embolized with coils at the location of the pseudoaneurysm to prevent hemorrhage. Follow up EUS confirmed the cessation of blood flow from the pseudoaneurysm. Clinicians encountering a gastric submucosal tumor-like protrusion in a patient with chronic pancreatitis should use EUS to investigate the possibility of a pseudoaneurysm, which must be treated as quickly as possible once identified.

关键词： Chronic pancreatitis Endoscopic ultraso- nography Pseudoaneurysm

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Transnasal and standard transoral endoscopies in the screening of gastric mucosal neoplasias

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World Journal of Gastrointestinal Endoscopy 2011年第8期3卷 162-170页

作者： Hiroya Nakata Shotaro Enomoto Takao Maekita Izumi Inoue Kazuki Ueda Hisanobu deguchi Naoki Shingaki Kosaku Moribata Yoshimasa Maeda Yoshiyuki Mori Mikitaka Iguchi Hideyuki Tamai Hiroya Nakata Nobutake Yamamichi Mitsuhiro Fujishiro Jun Kato Masao Ichinose Department of Gastroenterology School of Medicine Wakayama Medical University Wakayama City Wakayama 641-0012 Japan Nakata Medical Clinic Wakayama 641-0006 Japan Department of Gastroenterology Graduate School of Medicine The University of Tokyo Tokyo 113-8655 Japan

AIM: To compare the diagnostic performances of transnasal and standard transoral esophagogastroduodenoscopy (EGD) in gastric cancer screening of asymptomatic healthy subjects. METHODS: Between January 2006 and March 2010, a total of 3324 subjects underwent examination of the upper gastrointestinal tract by EGD for cancer screening, with 1382 subjects (41.6%) screened by transnasal EGD and the remaining 1942 subjects (58.4%) by standard transoral EGD. Clinical profiles of the screened subjects, detection rates of gastric neoplasia and histopathology of the detected neoplasias were compared between groups according to the stage of Helicobacter pylori (H. pylori)-related chronic gastritis. RESULTS: Clinical profiles of subjects did not differ significantly between the two EGD groups, except that there were significantly more men in the transnasal EGD group. During the study period, 55 cases of gastric mucosal neoplasias were detected. Of these, 23 cases were detected by transnasal EGD and 32 cases by standard transoral EGD. The detection rate for gastric mucosal neoplasia in the transnasal EGD group was thus 1.66%, compared to 1.65% in the standard transoral EGD group, with no significant difference between the two groups. Detection rates using the two endoscopies were likewise comparable, regardless of H. pylori infection. However, detection rates when screening subjects without extensive chronic atrophic gastritis (CAG) were significantly higher with standard transoral EGD (0.70%) than with transnasal EGD (0.12%, P < 0.05). In particular, standard transoral EGD was far better for detecting neoplasia in subjects with H. pylori-related non-atrophic gastritis, with a detection rate of 3.11% compared to 0.53% using transnasal EGD (P < 0.05). In the screening of subjects with extensive CAG, no significant differences in detection of neoplasia were evident between the two endoscopies, although the mean size of detected cancers was significantly smaller and the percentage o

关键词： Transnasal endoscopy Gastric cancer Gastric adenoma Atrophic gastritis Helicobacter pylori Cancer screening

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Assessment of gastroesophageal reflux disease by serodiagnosis of Helicobacter pylori-related chronic gastritis stage

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World Journal of Gastrointestinal Endoscopy 2011年第4期3卷 71-77页

作者： Shotaro Enomoto Masashi Oka Hiroshi Ohata Chizu Mukoubayashi Mika Watanabe Kosaku Moribata Yosuke Muraki Naoki Shingaki Hisanobu deguchi Kazuki Ueda Izumi Inoue Takao Maekita Mikitaka Iguchi Kimihiko Yanaoka Hideyuki Tamai Mitsuhiro Fujishiro Osamu Mohara Masao Ichinose Second Department of Internal Medicine Wakayama Medical UniversityWakayama641-0012Japan Wakayama Wellness Foundation Wakayama640-8404Japan Department of Endoscopy and Endoscopic Surgery Faculty of MedicineUniversity of TokyoTokyo113-8655Japan

AIM:To evaluate the association of Helicobacter pylori(***)-related chronic gastritis stage with upper gastro-intestinal symptoms and gastro-eso-phageal reflux disease(GERD).METHODS:Subjects underwent upper gastrointestinal endoscopy,a questionnaire using a frequency scale for symptoms of GERD(FSSG),and measurements of serum ***-antibody and pepsinogen(PG)*** were classified into the following 4 groups in terms of ***-related chronic gastritis stage:Group A(n = 219),***(-)PG(-);Group B(n = 310),***(+)PG(-);Group C(n = 279),***(+)PG(+);and Group D(n = 17),***(-)PG(+).RESULTS:Reflux esophagitis occurred in 30.6% of Group A,14.5% of Group B,6.8% of Group C,and 0% of Group D(P < 0.001).Scores for acid reflux sympto-ms decreased significantly with chro-nic gastritis stage(from Group A to D)(P < 0.05),while scores for dysmotility symptoms did no-t differ *** prevalence of nonerosive reflux disease(NERD)did not differ amo-ng ***,in subjects with GERD,the prevalence of NERD tended to increase with chronic gastritis stage(P = 0.081).CONCLUSION:Acid reflux sympto-ms and the prevalen-ce of reflux esophagitis can be assessed by measuring both serum ***-antibody and PG levels.

关键词： Gastro-eso-phageal reflux disease Helicobacter pylori Pepsinogen Screening and diagnosis

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基于支持向量机回归的LIBS飞灰含碳量定量分析

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光学学报 2022年第9期42卷 270-277页

作者：陈鹏齐超刘人玮王珍珍罗晗严俊杰刘继平出口祥啓西安交通大学能源与动力工程学院陕西西安710049 西安航天动力研究所陕西西安710100 德岛大学大学院社会产业理工学研究部日本德岛770-8506

采用激光诱导击穿光谱(LIBS)技术对配制的飞灰样品进行实验分析,应用支持向量机回归(SVR)模型对飞灰的含碳量进行预测。运用网格搜索法分别对径向基(RBF)核函数和多项式函数的结构参数进行寻优,然后分别建立基于内标元素特征光谱、全谱... 详细信息

采用激光诱导击穿光谱(LIBS)技术对配制的飞灰样品进行实验分析,应用支持向量机回归(SVR)模型对飞灰的含碳量进行预测。运用网格搜索法分别对径向基(RBF)核函数和多项式函数的结构参数进行寻优,然后分别建立基于内标元素特征光谱、全谱和主要元素特征光谱的SVR模型。研究表明,基于RBF和多项式核函数的SVR模型在理想的结构参数下可以取得相同的分析精度,但RBF能较快地完成模型优化并且不易出现欠拟合的现象。基于内标元素特征光谱的SVR模型的分析精度与内标法相当,基于全谱的SVR模型出现明显的过拟合现象。基于主要元素特征光谱的SVR模型的回归系数为0.986,校正均方根误差为1.79%,预测均方根误差为2.57%,说明该模型可以有效避免欠拟合和过拟合。

关键词：光谱学激光诱导击穿光谱飞灰含碳量支持向量机回归定量分析

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减少二氧化碳对LIBS检测飞灰中未燃碳含量影响的研究

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光谱学与光谱分析 2018年第1期38卷 258-262页

作者：南维刚出口祥啓王焕然刘人玮生友章裕王珍珍西安交通大学能源与动力工程学院陕西西安710049 Graduate School of Advanced Technology and Science Tokushima University 华陆工程科技有限责任公司陕西西安710065

通常热力发电厂将飞灰中未燃碳的含量作为评价锅炉燃烧效率的重要指标,通过测量飞灰中未燃碳的含量来评价煤粉燃烧的充分程度,进而实现优化燃烧、提高机组效率。基于激光诱导击穿光谱技术(LIBS)无接触、快速响应、高灵敏度、可以在线测... 详细信息

通常热力发电厂将飞灰中未燃碳的含量作为评价锅炉燃烧效率的重要指标,通过测量飞灰中未燃碳的含量来评价煤粉燃烧的充分程度,进而实现优化燃烧、提高机组效率。基于激光诱导击穿光谱技术(LIBS)无接触、快速响应、高灵敏度、可以在线测量等特点,备用来测量飞灰中未燃碳的含量。由于烟气中CO_2气体的存在,碳谱线强度会随CO_2浓度的变化而改变。为了减少CO_2气体对飞灰未燃碳测量结果的影响,提出并设计了具有二级旋风分离器的LIBS测量飞灰未燃碳含量实验系统,飞灰从给粉机流出后通过二级旋风分离器进入测量腔体,脉冲激光经过透镜作用于飞灰样品进而产生等离子体。LIBS系统采用双中心波长光谱仪,可测得飞灰中C,Si,Mg,Fe,Ca和Al等主要元素谱线,同时高分辨率通道可分辨出相邻C和Fe的元素谱线,可以在获得充分的飞灰光谱信息的同时保证了测量的精度。实验结果表明该系统可有效分离和收集飞灰颗粒,减少CO_2气体对测量结果的干扰,为LIBS技术的工程应用提供了更准确的依据。

关键词：激光诱导击穿光谱飞灰颗粒未燃碳二级旋风分离系统

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New Measurements for ^(8)He Excited States

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Chinese Physics Letters 2012年第8期29卷 69-72页

作者： XIAO Jun YE Yan-Lin CAO Zhong-Xin JIANG Dong-Xing ZHENG Tao HUA Hui LI Zhi-Huan LI Xiang-Qing GE Yu-Cheng LOU Jian-Ling PANG Dan-Yang LV Lin-Hui LI Qi-Te QIAO Rui YOU Hai-Bo CHEN Rui-Jiu H.Sakurai H.Otsu M.Nishimura S.Sakaguchi H.Baba Y.Togano K.Yoneda LI Chen WANG Shuo WANG He LI Kuo-Ang Y.Nakayama Y.Kondo S.deguchi Y.Satou K.H.Tshoo School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871 RIKEN 2-1HirosawaWakoSaitama 351-0198Japan Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 Department of Physics Tokyo Institute of TechnologyJapan School of Physics Seoul National UniversityKorea

Breakup reactions of the double borromean nucleus ^(8)He were measured at 82.3 MeV/u on CH2 and C *** coincident detection of two decaying neutrons and the high performance for neutron cross talk rejection are realized in this *** relative energy spectrum for ^(8)He was reconstructed with good *** spectrum exhibits a structure of two resonant peaks,one at an excitation energy of about 3.0 and the other at about 4.14 MeV,*** larger cross section for the first resonance is observed in comparison to the results reported previously.

关键词： experiment MeV/u spectrum

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飞灰未燃碳的激光诱导击穿光谱定量分析

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光子学报 2018年第8期47卷 33-40页

作者：胡若木王珍珍刘人玮周王峥刘继平严俊杰出口祥啓西安交通大学能源与动力工程学院西安710049 德岛大学大学院社会产业理工学研究部

为了验证LIBS测量飞灰中碳含量变化的能力,本文将煤粉与飞灰按照一定比例均匀混合,得到24种含碳量不同的样品.在不同延迟时间下进行激光诱导击穿光谱实验,得到温度指标发射强度比I_(Mg1)/I_(Mg2)随延迟时间的增大而减小,纯飞灰样品的发... 详细信息

为了验证LIBS测量飞灰中碳含量变化的能力,本文将煤粉与飞灰按照一定比例均匀混合,得到24种含碳量不同的样品.在不同延迟时间下进行激光诱导击穿光谱实验,得到温度指标发射强度比I_(Mg1)/I_(Mg2)随延迟时间的增大而减小,纯飞灰样品的发射强度比I_(Mg1)/I_(Mg2)的数值明显大于其他混入煤粉的样品.样品中发射谱线强度比IAl/ISi1随温度指标I_(Mg1)/I_(Mg2)的增大而减小.飞灰样品加入煤粉后,对等离子体的温度变化有明显影响.同时引入多元分析的方法,将样品中C、Al、Mg、Ca、Fe等元素谱线强度与Si元素谱线强度的比值作为多元回归分析的自变量,碳元素浓度作为因变量,建立不同延迟时间下的回归方程.结果表明,采用多元分析的方法进行定量计算,根据回归模型得到的预测值与参考值之间的误差基本在9%以内.

关键词：激光诱导击穿光谱飞灰延迟时间多元回归定量分析

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带压燃烧场2D温度分布的激光吸收光谱测量初步研究

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推进技术 2021年第9期42卷 2129-2137页

作者：周王峥王珍珍严俊杰种道彤辻本一真神本崇博出口祥啓西安交通大学能源与动力工程学院多相流国家重点实验室陕西西安710049 德岛大学大学院社会产业理工学研究部德岛县德岛770-8506

以实现冲压发动机等场合的高压燃烧流场诊断为目标,采用可调谐半导体激光吸收光谱(TDLAS)技术对带压燃烧流场的温度诊断进行初步研究。使用一种光谱耦合的CT重构方法,以误差平方和与零均值归一化互相关作为评价指标分析CT-TDLAS的重构... 详细信息

以实现冲压发动机等场合的高压燃烧流场诊断为目标,采用可调谐半导体激光吸收光谱(TDLAS)技术对带压燃烧流场的温度诊断进行初步研究。使用一种光谱耦合的CT重构方法,以误差平方和与零均值归一化互相关作为评价指标分析CT-TDLAS的重构精度。搭建带压燃烧腔温度分布测量的实验系统,使用压力传感器和CCD相机记录带压点火燃烧过程变化;使用调谐范围为1335~1375nm宽波段输出的半导体激光,对燃烧腔内带压点火燃烧过程进行了时间分辨的二维温度分布重建。实验结果表明:CT-TDLAS具有较高的重构精度;燃烧过程的压力变化趋势、火焰变化趋势及时间分辨二维温度分布变化趋势,三者保持一致;在带压条件下,CT-TDLAS可以实现高分辨率的时间分辨温度测量,反应定量的温度分布变化信息,为带压及进一步的高温高压燃烧流场的诊断提供帮助。

关键词：带压燃烧场可调谐半导体激光吸收光谱计算机断层扫描二维温度分布时间分辨

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