简介:摘要目的探讨泮托拉唑、阿莫西林、呋喃唑酮三联疗法治疗幽门螺旋杆菌相关性消化性溃疡的临床疗效。方法观察组给予泮托拉唑+阿莫西林+呋喃唑酮治疗,对照组给予泮托拉唑+阿莫西林+克拉霉素治疗,对比分析两组患者的临床疗效。结果对照组、观察组总有效率分别为81.82%、96.49%,观察组总有效率明显高于对照组,两组差异存在统计学意义(P<0.05);对照组、观察组幽门螺杆菌(Hp)清除率分别为78.18%、91.22%,观察组Hp清除率明显高于对照组,两组差异有统计学意义(P<0.05)。结论泮托拉唑、阿莫西林、呋喃唑酮三联疗法治疗幽门螺旋杆菌相关性消化性溃疡,可取得理想的临床疗效,值得在临床医学中推广使用。
简介:Thestabilityofthedrivecurrentisveryimportantforalaserdriver,whileitisdifficulttomaintainthecurrentstableatahighvalueforthelaserdriver.Ontheotherhand,therangeofthedrivecurrentisexpectedtobeaswideaspossibletobeappliedtodifferentkindsoflasers.Inthispaper,ahighcurrentlaserdriverforthesuperluminescentlightemittingdiode(SLED)ispresented,whichisusedintheopticfibergyroembeddedbya0.35mbipolarcomplementarymetal-oxide-semiconductortransistor(BiCMOS)process.Thelaserdriverprovidesautomaticpowercontrolandcertainvalueofcurrentdeterminedbytheexternalresister.Thesystemisbasedontheoptic-electricfeedbacktheoryandusestheclosed-loopcontroltechniquetomaintainthedrivecurrentstable.Thesystemiscapableofproducingstablecurrentrangesfrom4mAto200mAwhenthevalueofexternalresisterchanges.
简介:Verticalprofilesfortheuranium-seriesradioisotopes210Pband210Powereobtainedatthetwohydrothermalventsites,theIheyaRidgeandtheMinami-EnseiKnoll,intheMid-OkinawaTroughin1993and1994,respectively.In1995,bothradioisotopesweremeasuredattheMinami-EnseiKnollagain.AttheIheyaRidge,wherethehydrothermalactivityisnotactiveasreflectedbytheCH4and222Rndata,boththetotal210Pband210Poactivitiesshowdeficiencyrelativetotheirparents,andthemeanresidencetimeof210Pband210Poisapproximatelyequalto20and2~5a,respectively.AttheMinami-EnseiKnoll,whichischaracterizedbyblacksmokers,thetotal210Pb(0.167×10-3~2.5×10-3Bq/kg)aroundtheplumesisdeficientrelativeto226Rabutthetotal210Poactivities(1.83×10-3~2.83×10-3Bq/kg)areinexcessrelativeto210Pb.The210PoactivitiesarehigherthanthoseintheEastChinaSeaandtheOkinawaTroughandexcess210Pohasbeenfound.The210Pb/226Raand210Po/210Pbactivityratiosare0.1~0.4and1.1~7.8,respectively.210Pbispreferentiallyscavengedinthehydrothermalplumes.Thepossiblemechanismsgoverningtheconcentrationof210PbintheMinami-EnseiKnollinvolvealateraltransportof210Pbviadiffusion.Thehigh210Po/210Pbactivityratiosinthehydrothermalplumessuggestadepletionof210Pbandadditionof210Pointhehydrothermalventarea.
简介:摘要目的对骨髓增生异常综合征与巨幼细胞性贫血的病因、临床表现、细胞形态、血清乳酸脱氢酶及血清同型半胱氨酸结果进行比较分析研究,总结这两种贫血的细胞形态、生化检测等特征,为临床诊断、治疗提供可靠科学依据。方法对68例骨髓增生异常综合征与52例巨幼细胞性贫血回顾性分析研究。结果MDS与MA都存在不同程度的病态造血,在细胞形态方面改变有一定的重叠性,MDS组、MA组血清LDH水平明显高于正常组,差异有统计学意义(均P<0.05),且MA组血清LDH明显高于MDS组,差异有统计学意义(P<0.05)。MA组血清Hcy水平明显高于正常组及MDS组,差异都有统计学意义(均P<0.05)。结论MDS与MA是两种性质不同的疾病,治疗和预后各不相同,它们都存在不同程度一系或多系的病态造血,有时细胞形态学改变不典型、缺乏特异性,所以在诊断过程中,应密切结合临床,在细胞形态学的基础上,联合检测血清LDH、Hcy水平,有助于MDS与MA的鉴别诊断。
简介:摘要:西北工区设计井深较深,地层地质复杂, 地层层序较多, 其岩性、压力和温度变化大, 机械钻偏低,使用螺杆钻具是提速提效的重要手段,分析螺杆钻具断裂原因,提高其使用安全,具有重要意义。