简介:ThetransportpropertiesintheLa2/3(Ca1-xSrx)1/3MnO3(x=0,1/3,2/3)filmspreparedusingtheRFmagnetronsputteringmethodwereinvestigated.TheeffectoftheCa,Srdouble-dopingattheApositionintheLa2/3A1/3MnO3onthestructureofthetargetsandtransportofthefilmshasbeenstudied.Withtheincreaseofx,thestructuresofthetargetstransformfromtherhombohedralphasetothecubicphase;themetal-insulatorphasetransitiontemperature(Tp)ofthefilmsincreases;andthecorrespondingpeakresistivitydecreases.Allthephenomenacanbequalitativelyexplainedbythelatticeeffect.
简介:什么叫蓝V?蓝V就是微博认证对企业或者社会机构标的蓝色“V”。它们主要是在微博宣传自己的企业或机构,看上去很严肃,很高大上;什么叫段子手?段子手就是在微博上以发无厘头搞笑内容为主的个体,他们的形象是嬉皮笑脸的。两个角色虽然都是混迹在微博上,但好像也是两条平行线,风马牛不相及的。不过现在情况有了变化,这些本来应该打着官腔说些场面话的蓝V们变得越来越接地气起来,话也捡着有趣好玩的说,跟爆点,蹭热度,编笑话。以往大家都不太关注蓝V的微博的,但是这些家伙变得越来越有意思了,同样一个笑话,通过蓝v的嘴说出来,因为它们身份的加持,感觉就变得不不一样了呢!
简介:摘要目的探究剪切因子3B亚基1(subunit 1 of splicing factor 3b,SF3B1)、泛素结合酶E2变体2(ubiquitin conjugating enzyme E2 V2,UBE2V2)和组蛋白甲基转移酶(SET domain-containing protein 2,SETD2)的表达与老年骨质疏松性椎体骨折(osteoporotic vertebral fracture,OVF)的相关性。方法收集2020年8月至2021年8月烟台市烟台山医院31例骨质疏松性椎体骨折(vertebral fracture,VF)(VF组)和16例骨质疏松非椎体骨折(non vertebral fracture,NVF)(NVF组)的老年患者(年龄>60岁)的外周血样本,提取RNA进行转录组测序筛选差异表达基因。通过基因本体论(gene ontology,GO)分析、蛋白相互作用(protein protein interaction,PPI)网络分析、ROC曲线分析筛选VF相关基因。采用qRT-PCR检测基因的表达水平。结果相对于NVF组,VF中有822个差异表达基因,691个上调,131个下调。qRT-PCR结果显示,相对于NVF患者(1.55±0.33)(1.70±0.33)(1.64±0.33),VF患者外周血中SF3B1(1.83±0.23)(t=2.84,P=0.008)、UBE2V2(2.24±0.43)(t=3.91,P<0.001)的表达增强,SETD2(1.18±0.46)(t=3.25,P=0.003)表达降低。ROC曲线分析显示,SF3B1、UBE2V2和SETD2在VF中的AUC分别为0.803 4(P=0.007)、0.814 5(P=0.005)和0.786 3(P=0.001 4)。结论SF3B1、UBE2V2和SETD2与老年OVF高度相关,对OVF的诊断和预测具有重要价值。
简介:IncorporationofstrontiumintoV-Moalumina-supportedcatalystenhanceditsperformance(increasedconversionandselectivity,decreasedreducibilityandimprovedstability)inpropaneoxydehydrogenationtopropylene.12.5%SrloadingwasshowntobetheoptimumcontenttotheV-Mocatalyst.Theresultsweresupportedbyvariouscharacterizationtechniques,namely,BET,XRD,SEM,FTIRandTPD.
简介:Theelectronicstructures,dielectricfunctions,complexrefractiveindicesandabsorptionspectraforaperfectPbW04(PWO)crystalandthePWOcrystalscontainingleadvacancyV^2-pbhavebeencalculatedusingafull-potential(linearized)augmentedplane-wave(LAPW)+localorbitals(LO)methodwiththelatticestructureoptimized.Thepeaksoftheabsorptionspectracorrespondingtotheelectronictransitionshavebeenstudied.
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