简介:Itisprovedthatisa(Δ+1)-colorablegraph,soarethegraphsG×PnandC×Cn,wherePnandCnarerespectivelythepathandcyclewithnvertices,andΔthemaximumedgedegreeofthegraph.TheexactchromaticnumbersoftheproductgraphsPr1×Pr2×…×PrnandC3k×C2m1×C2m2×…×C2mnarealsopresented.Thusthetltalcoloringconjectureisprovedtobetrueformanyothergraphs.
简介:群对群(G2G)计算是一种基于G2G网络的分布式计算。G2G计算得益于灵活的分群,相同属性或任务的群内计算。本文提出了一个有门户网站结构,基于G2G计算的搜索服务。G2G搜索服务是一个混合搜索系统,既有分布式的搜索服务,又采用了集中式的搜索服务。采用G2G搜索服务的好处之一是,用户既参与了系统的分布式搜索任务,又能向系统请求搜索服务。采用G2G搜索服务的好处之二是,用部分的集中式结构把分散的局域搜索系统关联起来,扩大了系统的搜索效能。
简介:摘要目的探讨荧光定量法与G6PD/6PGD比值法在葡萄糖-6-磷酸脱氢酶(G6PD)缺乏症诊断的临床价值及基因突变类型分析。方法选择2018年6月至2021年3月就诊于上海市儿童医院疑似G6PD缺乏症的1 201例(男711例,女490例)患儿,采用荧光定量法、G6PD/6PGD比值法和多色熔解曲线分析法对酶活性、比值和基因突变类型进行检测。分析酶活性、比值与基因突变类型的关系,将荧光定量法和G6PD/6PGD比值法的结果与基因突变结果对比分析,采用受试者工作特征(ROC)曲线评价其诊断效能。结果1 201份可疑标本中,检出163份(男135份,女28份),其中荧光定量法检出156例,检出率95.71%,G6PD/6PGD比值法检出140例,检出率85.89%。男性患儿酶活性及比值明显低于女性患儿,差异均具有统计学意义(U=642.5、734.5,P均<0.001)。112例接受基因检测,检出92例,其中半合子突变74例,纯合突变1例,杂合突变15例,复合杂合突变2例。15例杂合突变中,荧光定量法检出11例,检出率73.33%,G6PD/6PGD比值法检出4例,检出率26.67%。基因共检出7个突变位点,所占比例分别为c.1388G>A型32.22%、c.1376G>T型30.00%、c.871G>A型13.33%、c.1024C>T型11.11%、c.95A>G型7.78%、c.487G>A型4.44%、c.392G>T型1.11%。c.1376G>T和c.1024C>T、c.487G>A酶活性差异有统计学意义(P<0.001、0.015);c.1024C>T和c.1388G>A、c.1376G>T、c.871G>A、c.95A>G比值差异均有统计学意义(P=0.017、0.002、0.011、0.013)。ROC曲线分析荧光定量法敏感度100%,特异度95.65%,曲线下面积(AUC)0.972。G6PD/6PGD比值法敏感度100%,特异度94.57%,AUC 0.979。荧光定量法和G6PD/6PGD比值法联合检测时敏感度最高96.7%,特异度最高100%,AUC 0.992。结论与荧光定量法相比,G6PD/6PGD比值法可能无法有效检出女性杂合子;G6PD荧光定量法结合G6PD/6PGD比值法检测有利于减少漏诊,结合基因突变分析,可能提高G6PD患儿诊断率。
简介:Duringtheformationofsub-wavelengthripples,theinitialsurfaceplasmon(SP)-laserinterferenceplaysanimportantrole.InthisLetter,theeffectsofgratingstructuresonthedistributionoftheabsorbedlaserintensity,SP-lasercoupling,freeelectrondistributions,andablationshapesareinvestigatedbytheplasmamodel,takingintoconsiderationboththelaserwave-particledualityandthetransientlocalizedchangesofmaterialproperties.ThesimulationresultsshowthatthegratingstructurescanstronglyenhancetheenergyabsorptionandSP-lasercoupling,whichmakesthefabricationofsub-wavelengthripplesmoreefficient.Itisalsofoundthattheablationshapes,intermsofablationdepthsandsub-wavelengthripplesperiods,arestronglyrelatedtothegratingstructures,whichcanbeusedtocontrolmicro/nanostructurespreciselyanduniformly.
简介:学习的主要目的是用遥感和地理信息系统(GIS)与一条综合途径在Thirumanimuttar盆识别地下水潜力地区。LandsatTM30m分辨率数据和地志的地图的FCC图象被用来产生相似地质学,地形学,貌和貌密度,排水,排水密度,和斜坡学习区域印射的题目的地图。象Denudational山,结构的山,Bajadas,塌积的平原,Pediplain,深三角饰和冲积平原那样的很多个似地球形状的单位被观察了。一张合成地下水潜力地图作为基于地下水可获得性区域很高、高、中等、低、很低被产生了。盆上面、中间、下游为地下水作为潜在的地区被识别了探索。为地下水潜力地区证明的貌和交叉的貌的区域。产生的数据与领域检查被验证并且观察了在有一样的一致。
简介:Disulfidebondsarevitalforproteinfunctions,butlocatingthelinkagesiteshasbeenachallengeinproteinchemistry,especiallywhenthequantityofasampleissmallorthecomplexityishigh.In2015,ourlaboratorydevelopedasensitiveandefficientmethodformappingproteindisulfidebondsfromsimpleorcomplexsamples(LuetaLinNatMethods12:329,2015).Thismethodisbasedonliquidchromatography-massspectrometry(LC-MS)andapowerfuldataanalysissoftwaretoolnamedpLink.Tofacilitateapplicationofthismethod,wepresentstep-by-stepdisulfidemappingprotocolsforthreetypesofsamples--purifiedproteinsinsolution,proteinsinSDS-PAGEgels,andcomplexproteinmix-turesinsolution.Theminimumamountofproteinrequiredforthismethodcanbeaslowasseveralhundrednanogramsforpurifiedproteins,ortensofmicrogramsforamixtureofhundredsofproteins.Theentireworkflow--fromsamplepreparationtoLC-MSanddataanalysis--isdescribedingreatdetail.Webelievethatthisprotocolcanbeeasilyimplementedinanylaboratorywithaccesstoafast-scanning,high-resolution,andaccurate-massLC-MSsystem.
简介:AbstractPurpose:Malnutrition is a common problem among hospitalized patients, especially among traumatic brain injury (TBI) patients. It is developed from hypermetabolism and the condition may worsen under the circumstance of underfeeding or incompatible dietary management. However, the data of nutrient intake especially calorie and protein among TBI patients were scarce. Hence, this study aimed to determine the calorie and protein intake among acute and sub-acute TBI patients receiving medical nutrition therapy in hospital Sultanah Nur Zahirah, Terengganu.Methods:This observational study involved 50 patients recruited from the neurosurgical ward. Method of 24 h dietary recall was utilized and combined with self-administered food diaries for 2-8 days. Food consumptions including calorie intake and protein intake were analyzed using Nutritionist PRO™ (Woodinville, USA) and manual calculation based on the Malaysian food composition database (2015).Results:Patients consisted of 56% males and 44% females with the median age of 28.0 (IQR = 22.8-36.5) years, of which 92% were diagnosed as mild TBI and the remaining (8%) as moderate TBI. The Glasgow coma scale (GCS) was adopted to classify TBI severity with the score 13-15 being mild and 9-12 being moderate. The median length of hospital stay was 2 (IQR = 2.0-3.3) days. Calorie and protein intake improved significantly from day 1 to discharge day. However, the intake during discharge day was still considered as suboptimal, i.e. 75% of calorie requirement, whilst the median protein intake was only 61.3% relative to protein requirement. Moreover, the average percentages of calorie and protein intakes throughout hospitalization were remarkably lower, i.e. 52.2% and 41.0%, respectively.Conclusion:Although the calorie and protein intakes had increased from baseline, hospitalized TBI patients were still at a risk to develop malnutrition as the average intakes were considerably low as compared to their requirements. Optimum nutrient intakes especially calorie and protein are crucial to ensure optimum recovery process as well as to minimize risks of infection and complications.
简介:EstimationprecisionofDisplacedPhaseCenterAlgorithm(DPCA)isaffectedbythenumberofdisplacedphasecenterpairs,thebandwidthoftransmittingsignalandmanyotherfactors.DetailedanalysisismadeonDPCA'sestimationprecision.AnalysisresultsshowthatthedirectionalvectorestimationprecisionofDPCAislow,whichwillproduceaccumulatingerrorswhenphasecen-ters'trackisestimated.Becauseofthisreason,DPCAsuffersfromaccumulatingerrorsseriously.Toovercomethisproblem,amethodcombiningDPCAwithSubApertureImageCorrelation(SAIC)ispresented.Largesyntheticapertureisdividedintosub-apertures.Microerrorsinsub-apertureareestimatedbyDPCAandcompensatedtorawechodata.Bulkerrorsbetweensub-aperturesareesti-matedbySAICandcompensateddirectlytosub-apertureimages.Afterthat,sub-apertureimagesaredirectlyusedtogenerateultimateSASimage.Themethodisappliedtothelake-trialdatasetofa20kHzSASprototypesystem.ResultsshowthemethodcansuccessfullyremovetheaccumulatingerrorandproduceabetterSASimage.
简介:摘要目的了解云浮市新生儿G6PD缺乏症的发生率。方法对出生48~72h后的32237名新生儿(男婴17988人,女婴14249人)采集足跟血制作血滤纸干标本,采用荧光斑点定性试验测定G6PD活性。结果初筛G6PD缺乏阳性2648人,其中男婴2152人,女婴496人,总的G6PD缺陷初筛检出率为8.21%,云浮市发病率与广东其他地区差别有统计学意义(P<0.05)。其中男婴为11.9%,女婴为3.48%。经统计分析显示男婴与女婴的发病率差别有统计学意义(P<0.05),并且云浮市各地区的发病率差别也存在差异,有统计学意义(P<0.05)。结论云浮市新生儿G6PD缺乏症发生率明显高于广东省其他地区,而且G6PD缺乏者男性明显高于女性,并且云浮市各地区的G6PD缺乏症发病率不一样。因此应在新生儿进行常规筛查,有效预防由于G6PD缺乏而引起的一系列疾病的发生。
简介:摘要目的了解贵港市新生儿红细胞葡萄糖-6-磷酸脱氢酶(G-6-PD)缺乏症的筛查率及阳性率。方法生后应用脐静脉血进行G-6-PD缺乏症筛查,用G6PD/6PGD比值法。结果G-6-PD缺乏症筛查阳性率为5.56%。男女婴筛查阳性率分别为6.91%、3.86%,差异有显著性,p=0.000(P<0.01);筛查阳性者男女婴G-6-PD活性分别为0.68±0.18、0.79±0.15,差异有显著性,p=0.000(P<0.01)。结论G-6-PD缺乏症在我市发生率高,男婴明显高于女婴,男婴G-6-PD活性明显低于女婴。开展新生儿疾病筛查,可早发现G-6-PD缺乏症,及时对G-6-PD缺乏症引起的新生儿高胆红素血症进行干预,避免胆红素脑病的发生,从而减少残疾儿童的发生,对于提高出生人口素质具有非常重要意义。
简介:目的探讨C57BL/6与ICR小鼠在博来霉素(BLM)致肺纤维化过程中的种属差异。方法8周龄雌性C57BL/6小鼠19只,ICR小鼠16只,分别经尾静脉一次性注射BLM150mg/kg,观察每组小鼠体重、生存率及肺组织病理改变。结果①C57BL/6与ICR小鼠最低体重分别发生在静脉注射处置后的7d和5d,最低体重分别为注射前的65.46%和73.21%,两组间无显著的统计学差异。②C57BL/6与ICR小鼠的生存率分别为36.84%和56.25%,两组间存在显著的统计学差异。③C57BL/6小鼠BLM注射后28d,在胸膜下及血管周围形成广泛、稳定的间质纤维化病理改变,而ICR小鼠肺组织未见明显纤维化形成。C57BL/6小鼠肺纤维化病理评分明显高于ICR小鼠(P〈0.001)。结论BLM诱导的肺纤维化作用在C57BL/6与ICR小鼠间存在着明显的种属差异。C57BL/6小鼠较ICR小鼠更适于复制博来霉素诱导的肺纤维化动物模型。
简介:TSSK6是睾丸特定的serine/threoninekinase家庭的一个成员。男Tssk6猛烈老鼠由于spermatogenic缺陷是不肥沃的,包括精子计数减小,数字和活动性评估的在能动精子的减少,和有反常形态学的精子的数字的增加。我们在人调查了在TSSK6基因和spermatogenic缺陷的变化之间的可能的协会。变化屏蔽TSSK6与精子缺乏在519个病人被执行(n=273)或严重oligozoospermia(n=246)并且在有由使中毒的normozoospermia的359控制高效的液体层析并且DNA定序。等位基因的频率和基因多型性的遗传型在病人和控制之间被比较。在TSSK6的新奇triallelic多型性,c.822+126T>G/C,被识别。而遗传型TG,等位基因G和等位基因C频率比在病人在控制是显著地更高的,遗传型TT和等位基因T的频率与控制相比在不肥沃的病人戏剧性地被增加。进一步的学习表明控制的等位基因C频率比有oligospermia的病人的显著地高。第一次,我们的调查结果建议了c.822+126T的一个协会>在有在等位基因T可以是为男不孕的一个风险因素的在人的spermatogenic缺陷的TSSK6的G/C,当等位基因C和G可以减少时危险性到男不孕。