简介:简单阐述了GELightSpeedPlus多排螺旋CT操作控制台的基本结构组成、工作原理、特点及故障现象,并针对故障进行分析及处理。为拥有该型设备的操作及维修人员提供参考。
简介:Toelucidatethemechanismofphotodynamicdamageofcells,theeffectofHPDpluslightontranscriptlonalectlvltyInthemucleusIsolatefromthenormalratliverwasstudiedinvitorby3H-UTPincorporationintoRNA.MeasurementsoffluorescencespectrumshowedthatHPDwasboundtothenucleusanditsfluorescenceIntensityIncreasedwiththeIncreaseofHPDconcentration.TheexperimentalresultsIndicatedthatnochangescouldbeobservedwheneitherHPDorlightwasusedalone.WhereasthenucleartranscriptionactivitywasfoundtobeinhibitedsignificantlybybothHPDandlighttreatment,andthedegreeofInhibitionwasdependentontheHPDconcentrationandthetimeofexposuretolight.Aftertreatmentby3μg/mlHPD,theinhibitionrateofthenucleartranscriptionactivitywas23%,45%,69%,80%and90%,respectivelyforlightexposureof2,5,10,20and30minutes.Ourresultssuggestedthatdose-dependentdecreasesinthenucleartranscriptionactivity,andmarkedinhibitionofthe
简介:摘要:本文主要介绍了一种高速连接器的结构设计及仿真计算等。随着电子设备向小型化、模块化发展的趋势,为了解决电子设备中数据传输速率和高密度小型化的需求,设计出一种印制板之间应用的高速连接器,来提高系统的传输可靠性及可维护性。
简介:AbstractTo compare efficacy and safety of nab-paclitaxel plus gemcitabine (AG) with nab-paclitaxel plus S-1 (AS) as first-line treatment for metastatic pancreatic cancer, we conducted a retrospective analysis by reviewing medical records of 53 metastatic pancreatic cancer patients in our institution. They received either AG (nab-paclitaxel 125 mg/m2 on days 1, 8 and gemcitabine 1000 mg/m2 on days 1, 8) or AS (nab-paclitaxel 125 mg/m2 on days 1, 8 and S-1 80-120 mg on days 1-14) chemotherapy. We found that AS had higher objective response rate (36% vs 21.4%), better disease control rate (84% vs 75%), prolonged time to progression (TTP, 7.1 vs 5 months), and improved overall survival (OS, 15.3 vs 12 months) when compared with AG. In Cox proportional hazards model, sex was significantly associated with TTP (P value=.031) and metastatic sites plus treatment after progression were significantly associated with OS (P value=.028 and .01, respectively). The incidence rate of chemotherapy-related adverse events was similar in both groups. Neutropenia (50% and 60%, all grade; 21.4% and 36%, grade 3 or 4, in AG and AS group) and sensory neuropathy (21.4% and 24%, all grade; 3.6% and 4%, grade 3 or 4, in AG and AS group) were the most common hematologic and non-hematologic toxicity. Thus, we believed that AS is a reasonable and convenient alternative for patients treated with AG as first-line chemotherapy for metastatic pancreatic cancer.
简介:摘要 :介绍一种 14位同时采样 ADCMAX1320的主要性能特点及其在同步向量测量中的应用 ,包括系统的软、硬件设计和数据处理的算法。采用一种递推 Fourier变换算法 ,提高了数据处理效率。