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扬州农村地区人群幽门螺杆菌感染现状及其与胃黏膜病理变化的关系 被引量:3
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作者 张云 冯心怡 +4 位作者 李贵庆 许菲 刘芳 李瑶瑶 邓彬 《世界华人消化杂志》 CAS 2021年第10期550-556,共7页
背景幽门螺杆菌(Helicobacter pylori,H.pylori)感染仍是世界公共卫生问题之一,社会经济因素、生活饮食习惯等可能影响H.pylori感染率.作为胃癌的最重要的可控的病因,根除H.pylori对预防胃癌意义重大.目的探讨扬州地区H.pylori感染现状... 背景幽门螺杆菌(Helicobacter pylori,H.pylori)感染仍是世界公共卫生问题之一,社会经济因素、生活饮食习惯等可能影响H.pylori感染率.作为胃癌的最重要的可控的病因,根除H.pylori对预防胃癌意义重大.目的探讨扬州地区H.pylori感染现状及其与胃黏膜病理变化的关系.方法选取2019-01/2019-12期间扬州市上消化道肿瘤内镜筛查项目成员共1412例,对纳入人群进行问卷调查、^(14)C尿素呼气试验、胃镜检查及组织活检.使用统计学软件分析H.pylori感染率、H.pylori感染的相关危险因素以及H.pylori感染与胃黏膜病理变化的关系.结果本研究男女比例为1:1.5,年龄介于36至76岁之间.扬州农村地区H.pylori感染率为43.8%.在单因素分析中,不同性别以及各年龄范围内感染率差异均不显著(P>0.05),吸烟、饮食偏好、H.pylori认知水平、消化道症状与H.pylori感染之间相关性较明显(P<0.05);多因素分析中,吸烟是H.pylori感染的独立危险因素(OR=1.427,95%CI:1.103-1.847).在H.pylori感染与胃黏膜病理变化关系的分析中,H.pylori阳性人群表现为萎缩性胃炎、肠化生、异型增生、胃癌的比例明显高于H.pylori阴性人群.结论扬州地区H.pylori阳性检出率较高,生活习惯与H.pylori感染具有相关性.H.pylori感染与胃部病变进展相关,建议加强宣教,提高地区对H.pylori的防控水平,降低胃癌的发生率. 展开更多
关键词 幽门螺杆菌 影响因素 胃黏膜 病理变化
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Progressive Furniture Model Decimation with Texture Preservation
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作者 Zhi-Guang Pan Chu-Hua Xian +1 位作者 Shuo Jin gui-qing li 《Journal of Computer Science & Technology》 SCIE EI CSCD 2019年第6期1258-1268,共11页
In digital furniture design, skillful designers usually use professional software to create new furniture designs with various textures and then take advantage of rendering tools to produce eye-catching design results... In digital furniture design, skillful designers usually use professional software to create new furniture designs with various textures and then take advantage of rendering tools to produce eye-catching design results. Generally, a fine-grained furniture model holds many geometric details, inducing significant time cost to model rendering and large data size for storage that are not desired in application scenarios where efficiency is greatly emphasized. To accelerate the rendering process while keeping good rendering results as many as possible, we develop a novel decimation technique which not only reduces the number of faces on furniture models, but also retains their geometric and texture features. Two metrics are utilized in our approach to measure the distortion of texture features. Considering these two metrics as guidance for decimation, high texture distortion can be avoided in simplifying the geometric models. Therefore, we are able to build multi-level representations with different detail levels based on the initial design. Our experimental results show that the developed technique can achieve excellent visual effects on the decimated furniture model. 展开更多
关键词 FURNITURE design MODEL DECIMATION TEXTURE PRESERVATION PROGRESSIVE representation
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