简介:1.IntrodnctionThispaperextendsthestudyofthesingularmatrixvariatebetadistributionofrank1[1]tothecaseofageneralrank.Astherelateddistributiontonormalsampling,thematrixvariatebetadistribution(alsocalledthemultivariatebetadistribution)hasbeenstudiedextens...
简介:Aprobabilitydensityfunction(PDF)isderivedofbetadistributionwithbothλ3(skewness)andλ4(kurtosis)asparametersforweaklynonlinearwavesurfaceelevationbyuseofamethodrecentlyproposedbySrokosz.ThisPDFnotonlyhasasimplerformthanthewell-knownGram-CharlierSeriesPDFderivedbyLonguet-Higgins,butalsoovercomesanobviousshortcomingofthelatterthatwhentheseriesisunsuitablytruncated,theresultingPDFislocallynegative.TotestthederivedbetaPDF,laboratorialexperimentsofwindwavesareconducted.TheexperimentaldataindicatethatthetheoreticalrequirementsoftheparametersinthebetaPDFarefulfilled.TheexperimentalresultsshowthatthepresentPDFisinbetteragreementwiththemeasureddatathanthebetaPDFonlyincludingparameterλ3,andalsothantheGram-CharlierSeriesPDFtruncateduptothetermofH6.
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简介:AbstractThalassemia, classified as the main types α- and β-thalassemia, is a single gene disorder resulting from globin chain synthesis impairment through the mutation or deletion of globin genes. The incidence of thalassemia is high worldwide, with high associated mortality. Therefore, treatment is important to improve patient outcomes. This paper reviews the current status of β-thalassemia major in China, including its epidemiology and treatment.
简介:摘要目的探讨天麦消渴片联合吡格列酮治疗初发2型糖尿病的疗效及对患者HOMA-IR及HOMA-B的影响。方法收集接受治疗的初发2型糖尿病患者92例,随机分为观察组与对照组,各46例,对照组给予吡格列酮治疗;观察组给予天麦消渴片联合吡格列酮治疗,分析临床疗效及对HOMA-IR及HOMA-B的影响。结果两组患者治疗后FBG、FINS、HOMA-IR、HOMA-B明显优于治疗前(P<0.05),且治疗后观察组患者FBG、FINS、HOMA-IR、HOMA-B明显优于对照组(P<0.05)。结论天麦消渴片联合吡格列酮可有效抑制胰岛素抵抗,且能够保护B细胞功能,具有良好的临床疗效,值得临床推广应用。
简介:摘要:目的 探讨血清LH水平联合HOMA-IR对PCOS早期诊断的价值。方法 选取2023年8月-2024年4月在我院就诊的育龄期女性PCOS患者80例为观察组,以80例体检健康育龄期女性为对照组。检测两组受试者血清性激素及糖代谢指标,分析其与PCOS患者的关系。结果 观察组T、LH、FPG、FINS、HOMA-IR高于对照组(P<0.05);两组E2、FSH水平比较,差异无显著性(P>0.05)。Logistic单因素及多因素回归分析显示LH(OR=4.721)、HOMA-IR(OR=9.924)为影响PCOS发生的危险因素(P<0.05)。LH诊断PCOS的AUC、灵敏度、特异度分别为0.886、78.75%、96.25%;HOMA-IR诊断PCOS的AUC、灵敏度、特异度分别为0.850、77.50%、96.25%;联合检测诊断PCOS的AUC、灵敏度、特异度分别为0.951、92.50%、95.00%。联合检测诊断PCOS的AUC高于LH、HOMA-IR(P<0.05)。结论 PCOS患者血清LH及HOMA-IR表达升高,检测二者水平有助于PCOS的早期诊断。
简介:ObjectivesToinvestigatetheeffectsoftestosteroneenanthate(TE)onserumlipidsandlipoproteinsmetabolismandtheexpressionofandrogenreceptor(AR),estrogenreceptorbeta(ER-β)andplateletderivedgrowthfactorbeta(PDGFR-β)inaorticvascularsmoothmuscletissues(VSMTs).MethodsFortyagedmaleratswererandomlydividedinto4groups,groupA(placebogroup),groupB(2.5mg/kgintramuscularinjectionofTEonceaweek),groupC(5.0mg/kgintramuscularinjectionofTEonceaweek),groupD(10.0mg,/kgintramuscularinjectionofTEonceaweek).Allanimalswerefedfreelyduring16-weektreatmentperiods.TheexpressionofAR,ER-βandPDGFR-βwerestudiedbyWesternbolt.ResultsAverageserumLDL-CwasloweringroupDthanthatingroupA(p<0.01).Comparedwiththeothergroups,averageserumTCwasalsoloweringroupD(p<0.05).ARexpressioninaorticvascularsmoothmuscletissuescouldberegulatedbyTE:99.50±21.74,125.38±28.68and101.98±15.42forTEconcentrationsat2.5mg/kg,5.0mg/kgand10.0mg/kg,respectively,theexpressionofER-βcouldberegulatedbyTE:92.34±18.68,47.72±18.12,82.13±23.50,andtheexpressionofPDGFR-βcouldberegulatedaswellbyTE:219.70±45.59,50.16±9.72,125.36±15.74(DataforAR,ER-βandPDGFR-βproteinbandintensitywereexpressedwithx±s,withcontrolgrouptakenas100).ConclusionsThisstudyindicatesthatandrogenshavesignificanteffectsonserumlipidsandlipoproteinmetabolism.Testosteroneenanthateat5.0mg/kgcanstimulatetheexpressionofAR,butinhibitetheexpressionofPDGFR.Testosteroneenanthateattheconcentrationsof5.0mg/kgand10.0mg/kgcaninhibitetheexpressionofER-β.
简介:Inthepresentpaper,weproposetheqanalogueofSza′sz-Beta-Stancuoperators.Byestimatethemoments,weestablishdirectresultsintermsofthemodulusofsmoothness.Investigatetherateofpoint-wiseconvergenceandweightedapproximationpropertiesoftheqoperators.Voronovskajatypetheoremisalsoobtained.Ourresultsgeneralizeandsupplementsomeconvergenceresultsoftheq-Sza′sz-Betaoperators,thustheyimprovetheexistingresults.
简介:20例2型糖尿病NAFLD病人给以太罗4mg/d,40周治疗。结果FiG、Fins、HOMA—IR、ALT、AST、ALP和GGT水平都较治疗前明显下降且有显著统计学意义(P〈0.05)。HOMA—IR(5.64±5.64)的变化值分别与ALIT(60.30±49.16U/L,r^2=0.8535,r=0.9238,P=0.0000),AST(4.15±9.55U/L,r^2=0.5545,r^2=0.7446,P=0.0002),GGT(70.75±70.58U/L,r^2=0.4581,r^2=0.6768,P=0.0010)变化值之间存在着显著的直线相关关系,而和ALP(32.75±33.29U/L,r^2=0.1644,r=0.4054,P=0.0761)变化值之间的相关性无统计学意义。结论罗格列酮治疗2型糖尿病NAFLD时HOMA-IR下降与肝酶水平下降呈直线相关,随胰岛素抵抗下降的同时可使升高的肝酶水平下降。
简介:Texturepatternmappingisoneofthemostimportanttechniquesforhighqualityimagesyn-thesis.Itcanlargelyenhancethevisualrichnessofraster-scanimages.Inthispaperispresentedanewmethodofmappingplanartexturepatternontobeta-splinecurvedsurfaces——bilinearmappingmethodwhichcanmapplanartexturepatternontocurvedsurfaceswithlessdistortion,andalsocanfulfillthegeometrictransformationofthetexturepatternonthecurvedsurfacesbyoperatingthepatternwin-dow.ItisvaluabletobothCAD/CAMinartisticfieldandcomputergraphics.