简介:摘要目的分析探讨胃癌患者临床X线表现。方法选取我院2012年4月-2014年5月收治的胃癌患者45例,对其病理资料进行回顾性分析并比较以上45例患者X线检查结果与病理检查结果。结果45例患者经由X线检查后,显示溃疡性胃癌、蕈伞型、肿块型胃癌例数分别为23例、7例、8例,诊断为胃溃疡及糜烂性胃炎例数为4例,漏诊3例,诊断准确率为93.33%,病理检查结果为溃疡性胃癌、蕈伞型、肿块型例数分别为22例、9例、8例,确诊为胃溃疡及糜烂性胃炎患者5例,两组数据差异无统计学意义(P>0.05),但不同类型胃癌X线征象和发生部位比较,差异具有统计学意义(P<0.05)。结论X线检查用于胃癌诊断准确率较高,基本同病理检查结果相符,具有临床应用价值。
简介:TheapplicationofXzeoliteintheareasforproducingpara-xylenebyadsorptiveseparation,N2/O2separation,etc.,wasreviewed,andtheframeworkSiO2/Al2O3molarratio,thecationsandthewatercontentofXzeolitesignificantlyaffecteditsselectivityandcapacity.Astheactivecomponentofpara-xyleneadsorbent,theXzeolitewithaframeworkSiO2/Al2O3molarratioof2.2-2.4coupledwithcationsofBa^2+andK^+,aswellasawatercontentof4.0%-5.0%exhibitedhigherpara-xyleneselectivity.ForN2/O2separation,higherN2capacityandN2/O2separationfactorwereachievedwhentheXzeolitehadaframeworkSiO2/Al2O3molarratioof2.0coupledwithLi^+cations.TheintroductionofanothercationinXzeolitecouldfurtherincreasetheN2/O2separationfactor,whiletheadsorptionofwater,however,couldleadtoaremarkabledecreaseofN2capacity.Besides,theXzeolitecouldbeusedinadsorptiveseparationofhighlypureHeandselectiveadsorptionofCO2,CO,CH4,N2,Ar,andH2.