检索结果-南通市图书馆

Characterization of the salivary microbiome in healthy Thai children

Asian Pacific Journal of Tropical Medicine 2019年第4期12卷 163-169页

作者： Izumi Mashima citra f.theodorea Boonyanit Thaweboon Sroisiri Thaweboon Tippanart Vichayanrat frank A.Scannapieco futoshi Nakazawa Department of Microbiology School of Pharmacy Aichi Gakuin University Department of Oral Biology Faculty of Dentistry Universitas Indonesia Department of Oral Microbiology Faculty of Dentistry Mahidol University Department of Community Dentistry Faculty of Dentistry Mihidol University Department of Oral Biology School of Dental Medicine University at Buffalo the State University of New York Department of Microbiology School of Dentistry Health Sciences University of Hokkaido

Objective: To investigate the composition of the salivary microbiome of 50 healthy Thai children. Methods: A total 76 provinces in Thailand are grouped into 5 geographical clusters based on unique economics, foods and lifestyles. Geographical locations and the results of an oral assessment were also considered. Genomic DNA was extracted from stimulated saliva samples. Subsequently, amplicon libraries were prepared by 16 S Metagenomic Sequencing Library Preparation. The amplicons were sequenced using an Illumina Miseq platform followed by bioinformatics and statistical ***: The correlation between oral hygiene status and caries history varied from r^2=0.887 to r^2=0.999 in the geographical groups, suggesting oral hygiene status a strong association between caries history. Twenty taxonomic groups were found in all subjects and constituted 93.6%-96.5% of the microbiome. Of these, genus Veillonella and Prevotella showed significant differences in their proportions between the geographical groups(Pfurthermore, the proportion of Veillonella parvula, as well as Rothia aeria and Rothia dentocariosa tended to increase with worse oral hygiene status, which was also related to higher dental caries ***: The differences in the salivary microbiome as related to geographic regions suggest that environmental factors, which may include dietary habits, could influence the predominant bacteria found in the mouth of Thai children, especially the genus Veillonella and Prevotella. The ratio of Veillonella parvula, Rothia aeria and Rothia dentocariosa may be indicators of worse oral hygiene status and future caries in this population.

关键词： Saliva Microbiome Thai Children Region Simplified oral hygiene index

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

为何全国弹道导弹防御系统起不了作用？

引用

科学 1999年第11期51卷 12-18页

作者： GeorgeN.Lewis theodorea.Postol JohnPike 张牛郭凯声不详麻省理工学院安全研究计划副主任麻省理工学院科学技术与国家安全政策教授美国科学家空间政策计划联合会会长

1968年，正当洲际弹道导弹攻击的威胁迫使美国研制全国导弹防御系统之际，物理学家Richard ***和Hans ***在《科学美国人》杂志上发表了一篇文章。据该文说，尚在研制过程中的美国的“灵巧”导弹防御系统对于中国或苏联来说．是很容易... 详细信息

1968年，正当洲际弹道导弹攻击的威胁迫使美国研制全国导弹防御系统之际，物理学家Richard ***和Hans ***在《科学美国人》杂志上发表了一篇文章。据该文说，尚在研制过程中的美国的“灵巧”导弹防御系统对于中国或苏联来说．是很容易突破的[参见《科学美国人》1968年3月号“反弹道导弹系统”一文]。

关键词：美国弹道导弹防御系统防务预算对抗手段设计方案

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

空间站救生和载人/后勤运输飞行器性能的评定

引用

上海航天 1991年第6期8卷 55-60,54页

作者： J.ChrisNaftel RichardW.Powell theodorea.Talay 奚妙芳

随着永久性载人空间站研制工作的着手进行,为空间站上的宇航员提供某种形式的救援能力已被提上议事日程.为提高救援能力,拓宽将人员和物资送上空间站的途径和摆脱完全依靠航天飞机的现状,美国正在研究一种由“大力神”Ⅲ运载火箭发射的... 详细信息

随着永久性载人空间站研制工作的着手进行,为空间站上的宇航员提供某种形式的救援能力已被提上议事日程.为提高救援能力,拓宽将人员和物资送上空间站的途径和摆脱完全依靠航天飞机的现状,美国正在研究一种由“大力神”Ⅲ运载火箭发射的空间站载人/后勤运输飞行器(SSPLV).着重介绍SSPLV/“大力神”Ⅲ的额定上升弹道、从发射到入轨期间各上升段的故障模式及再入轨道.

关键词：运载火箭航天器发射航天运输

来源：

维普期刊数据库