目的系统评价截冠术拔除下颌阻生智齿的效果。方法计算机检索Pub Med、Embase、Web of Science、CENTRAL、SIGLE、CNKI、CBM数据库中关于截冠术拔除下颌阻生智齿的文献,由2名评价者独立进行文献质量评价和资料提取后,采用RevMan5.1软件...目的系统评价截冠术拔除下颌阻生智齿的效果。方法计算机检索Pub Med、Embase、Web of Science、CENTRAL、SIGLE、CNKI、CBM数据库中关于截冠术拔除下颌阻生智齿的文献,由2名评价者独立进行文献质量评价和资料提取后,采用RevMan5.1软件进行meta分析。结果共纳入4个研究,截冠术组401例和一次完全拔除组539例患牙,meta分析结果显示：下牙槽神经损伤、术后感染,干槽症、术后一周疼痛的相对危险度和95%可信区间分别是0.11（95%CI=0.03～0.36;P=0.000 3）,1.03（95%CI=0.54～1.98;P=0.93）,0.55（95%CI=0.28～1.05;P=0.07）,and 1.14（95%CI=0.57～2.30;P=0.71）。结论截冠术应用于下颌阻生智齿的拔除,可降低下牙槽神经损伤的风险,值得临床推广应用。展开更多
The recent growth of the global petroleum refining industry and the main technologies and measures for China to process inferior crude oil were introduced. The main technologies and measures include the control over e...The recent growth of the global petroleum refining industry and the main technologies and measures for China to process inferior crude oil were introduced. The main technologies and measures include the control over equipment corrosion induced by sour and acidic crude, in particular the corrosion of atmospheric and vacuum distillation units, the development of technology for processing inferior residue, and the development of desulfurization technology and sulfur recovery technology in the course of processing of petroleum products. In order to meet the needs for national economic development, China’s refining enterprises will uninterruptedly develop and prefect technologies for processing inferior crude, enhance the process and equipment management, sum up the experience for better processing of inferior crude, so as to provide high-quality oil products and petrochemical feedstocks to public with better economic return.展开更多
目的:评价基于CT血管成像(CTA)和数字减影血管造影(DSA)的膈下动脉(IPA)解剖学变异的发生率与临床相关性。方法:系统检索PubMed、Web of Science、Scopus、Embase、Google Scholar、CBM、CNKI、WanFang、VIP和Baidu Scholar等数据库,纳...目的:评价基于CT血管成像(CTA)和数字减影血管造影(DSA)的膈下动脉(IPA)解剖学变异的发生率与临床相关性。方法:系统检索PubMed、Web of Science、Scopus、Embase、Google Scholar、CBM、CNKI、WanFang、VIP和Baidu Scholar等数据库,纳入与左、右膈下动脉(LIPA和RIPA)相关的文献,并采用Stata 17.0软件进行Meta分析。结果:共纳入19篇文献,包括6754例患者。IPA共干和单独起源的汇总发生率分别为29.4%(95%CI:24.8%~34.2%)和70.6%(95%CI:65.8%~75.2%);IPA共干以起源于腹主动脉和腹腔干最为常见,汇总发生率分别为48.2%(95%CI:42.4%~54.1%)和49.0%(95%CI:43.3%~54.7%);RIPA单独起源以腹主动脉和腹腔干最为常见,汇总发生率分别为40.9%(95%CI:36.7%~45.3%)和34.8%(95%CI:30.7%~38.9%);LIPA单独起源以腹腔干和腹主动脉最为常见,汇总发生率分别为58.5%(95%CI:53.2%~63.7%)和32.6%(95%CI:27.3%~38.1%)。结论:IPA的起源变异十分丰富,熟悉IPA的起源变异对介入放射学、胃肠病学、外科学和创伤学医师具有十分重要的临床意义。展开更多
文摘The recent growth of the global petroleum refining industry and the main technologies and measures for China to process inferior crude oil were introduced. The main technologies and measures include the control over equipment corrosion induced by sour and acidic crude, in particular the corrosion of atmospheric and vacuum distillation units, the development of technology for processing inferior residue, and the development of desulfurization technology and sulfur recovery technology in the course of processing of petroleum products. In order to meet the needs for national economic development, China’s refining enterprises will uninterruptedly develop and prefect technologies for processing inferior crude, enhance the process and equipment management, sum up the experience for better processing of inferior crude, so as to provide high-quality oil products and petrochemical feedstocks to public with better economic return.
