简介：

简介：

简介：603盔甲钢的塑料行为以从288K从0.001s1到4500s1，和温度到873K的紧张率被学习。强调在流动应力上被放在温度，紧张率，和塑料紧张的效果上。基于试验性的结果，JC和KHL模型被用来模仿这材料的流动应力。由比较，模型预言和紧张率的试验性的结果跳测试，KHL模型被显示在为这材料装载条件的建筑群下面有塑料行为的更好的预言，特别在动态区域。

简介：作者认为二分离时间的保险是风险模型。二个动人的平均风险模型被介绍为剩余过程建模，并且毁灭的可能性与经常的利息力量在模型被检验。为一根无限的时间地平线的毁灭可能性的指数的界限被鞅方法导出。

简介：Thermalstabilityandstrainratesensitivityofultrafine-grained(UFG)Feproducedbysevereplasticdeformation(SPD)wereinvestigated.TheUFGFewasprocessedbyequal-channelangularpressing(ECAP)viarouteBc.After6passes,thegrainsizeofUFGFereaches600nm,asconfirmedbymeansofelectronbackscatterdiffraction(EBSD).Examinationofmicro-hardnessandgrainsizeofUFGFeasafunctionofpost-ECAPannealingtemperatureshowsatransitionfromrecoverytorecrystallization.Thecriticaltrans...

简介：Astructurefunctionapproachisappliedtoestimatetheturbulentkineticenergy(TKE)dissipationrateinthebottomboundarylayerofthePearlRiverEstuary(PRE).SimultaneousmeasurementswithanacousticDopplervelocimeter(ADV)suppliedindependentdatafortheverificationofthestructurefunctionmethod.Theresultsshowthat,1)thestructurefunctionapproachisreliableandsuccessfullyappliedmethodtoestimatetheTKEdissipationrate.Theobserveddissipationratesrangebetween8.3×104W/kgand4.9×106W/kginYM01andbetween3.4×104W/kgand4.8×107W/kginYM03,respectively,whileexhibitingastrongquarter-diurnalvariation.2)Thebalancebetweentheshearproductionandviscousdissipationisbetterachievedinthestraightriver.Thisfirst-orderbalanceissignificantlybrokenintheestuarybynon-shearproduction/dissipationduetowave-inducedfluctuations.

简介：

简介：InthispaperthemeteorologicalbackgroundfortheformationofplumefromtheforestfireinNortheastChinaon7—8May1987isstated.Thelong-rangeinstantaneousdiffusionparametersarecalculatedbyusingthesatellitephotographoftheplumeswithvisiblelengthrangingfrom100toover500kin.Theresultsofcal-culationshowthattherelationsbetweeninstantaneousdiffusionparameterandtraveltime(upto60000sec.)obeythelawoflinearor3/2power.Inaddition,heatreleasefromthefireonMay7—8estimatedbypuffrisingformulacanmeet,inrespecttotheorderofmagnitude,thevaluegainedonthefieldsurvey.

简介：StandardmetabolicratesofSchlegelsblackrockfishwithdifferentbodyweightsaredeterminedinlaboratorybyusingtheflow-throughrespirometerat11.2℃,14.7℃,18.0℃and23.6℃.Theresultsindicatethatthestandardmetabolicratesincreasewiththeincreaseofbodyweightatdifferenttemperatures.RelationshipbetweenthemcouldbedescribedasRs=aInWb.Themeanofstandardmetabolicrateissignificantlydifferentamonggroups,butthebvaluesarenot.Thestandardmetabolicratesofamendedstandardbodyweightsdecreasewiththeincreaseoftemperature,andthemeanofstandardmetabolicrateisalsosignificantlydifferentamonggroupswhenthestandardbodyweightsare48.6g,147.9g,and243.1g.RelationshipbetweenthemcouldbedescribedasRsw=me-bT.Therelationsofstandardmetabolicrate(Rs)orrelativemetabolicrate(Rs)tobodyweightandtemperatureyieldthefollowingequations:Rs=1.160W0.752e-9.494/7andRs1=1.160W0.254e-9.494/7.

简介：Astructuredperturbationanalysisoftheleastsquaresproblemisconsideredinthispaper.Thenewerrorboundprovestobesharperthanthatforgeneralperturbations.Weapplythenewerrorboundtostudysensitivityofchangingtheknotsforcurvefittingofinterestratetermstructurebycubicspline.Numericalexperimentsaregiventoillustratethesharpnessofthisbound.

简介：PURPOSE:Weinvestigatethepatternsoffailureinthetreatmentofglioblastoma(GBM)basedonclinicaltargetvolume(CTV)marginsize,dosedeliveredtothesiteofinitialfailure,andtheuseoftemozolomideandintensity-modulatedradiotherapy(IMRT).METHODS:BetweenAugust2000andMay2010,161patientswithGBMweretreatedwithradiotherapywithorwithoutconcurrenttemozolomide.PatientsweretreatedwithCTVexpansionsthatrangedfrom5to20mmusingashrinkingfieldtechnique.PatternsoffailureandtimetoprogressionandoverallsurvivalwerecomparedbasedonCTVmargin,useoftemozolomide,anduseofIMRT.KaplanMeieranalysiswasusedtoestimatesurvivaltimes,andχtestwasusedforcomparisonofcohorts.RESULTS:Forpatientstreatedwith5-,10-,and15-to20-mmCTV,79%,77%,and86%experiencedfailuresinthe60Gyvolume,respectively.Forty-eightpercent,55%,and66%ofpatientswith5-,10-,and15-to20-mmCTVexperiencedfailuresinthe46Gyvolume,respectively.Therewasnostatisticaldifferencebetweenpatientstreatedwith5-,10-,15-to20-mmmarginswithregardto60Gyfailure(P=0.76),46Gyfailure(P=0.51),ormarginalfailure(P=0.73).Eightypercentofpatientsreceivingtemozolomideexperiencedfailuresinthe60Gyvolume.TherewasnoincreasedlikelihoodofmarginalfailuresinpatientsreceivingIMRT(P=0.97).CONCLUSIONS:Moderntreatmenttechniquesincludinguseofconcurrenttemozolmide,limitedCTVmarginsize,andIMRThavenotgreatlychangedthepatternsoffailureofGBM.

简介：Plantationsofeucalyptsasshort-rotationtreecropsarerapidlyexpandingintropicalandsub-tropicalregions,includingsouthernChina,wherethesoilsareacidicandavailablephosphorus(P)islimited.Weinvestigatedseedlinggrowth,drymatteraccumulation,andthedynamicsofphotosyntheticrateandchlorophyllcontentofsevenEucalyptusspecies/hybrids(E.dunnii,E.grandis,E.grandis×E.camaldulensis,E.urophylla×E.camaldulensis,E.urophylla×E.tereticornis,E.grandis×E.tereticornis,E.urophylla×E.grandis)inresponsetodifferentlevelsofPsupply(0,6,12and18mg?kg-1KH2PO4).ThephotosyntheticrateandthechlorophyllcontentsignificantlydeclinedasthePsupplydeclinedinalmostalinearfashionforallspeciesasthePstressperiodextended.IntheabsenceofPsupply,heightgrowthofseedlingsofallspecieswassignificantlyimpaired,whilerootcollardiametergrowthandwholeplantdrymatteraccumulationwasnotaffectedbythelevelofPsupplyinmostofthespecies.Significantinter-speciesvariationsingrowth,drymatteraccumulationandphotosyntheticrateinresponsetoPsupplyweredetected.EucalyptusdunniihadthelowestgrowthperformanceacrossalllevelsofPsupplywhileE.urophylla×E.tereticornisshowedsuperiorgrowthperformance.Fromapracticalpointofview,E.urophylla×E.tereticornisissuggestedasacandidatehybridforplantingonslightlyP-deficientsitesinsouthernChinawhileE.dunnii,beingaslow-growingspecies,isnotsuitableforshort-rotationplantation.OnplantationsiteswhereseverePdeficiencyexists,Pfertilizationneedstobeconsideredtoboostrapidgrowthofseedlingssoastomeetthemanagementobjectivesofshort-rotationplantation.

简介：AbstractBackground:Few data are available regarding the long-term case-fatality rate (CFR) among people living with HIV (PLWH) with nontuberculous mycobacteria (NTM) disease. The aim of this study is to analyze the long-term CFR in patients with NTM disease and to identify risk factors for their death.Methods:A retrospective cohort study of 379 cases of microbiologically confirmed NTM disease in PLWH was conducted from January 1, 2012, to December 31, 2020, in Shanghai, China. We used Kaplan-Meier survival analysis and the log-rank test to compare the long-term CFR in patients with disseminated NTM (DNTM) and localized NTM disease. Univariate Cox proportional hazards regression analysis and a stepwise Cox proportional hazards regression model were used to estimate the predictors of long-term CFR.Results:The cohort was followed up for a median of 26 months. The total CFR was 15.7% by one year and increased to 22.6% at 5 years after the diagnosis of NTM disease. The 5-year CFR of PLWH with DNTM was significantly higher than that of PLWH with localized NTM (26.7% vs 19.6% for DNTM and localized NTM disease, respectively). Older age [hazard ratio (HR)= 1.04, 95% confidence interval (CI): 1.02-1.06, P < 0.001], comorbidity (HR= 2.05, 95% CI: 1.21-3.49, P < 0.01), DNTM (HR= 2.08, 95% CI: 1.17-3.68, P < 0.05), and HIV viral load (HR= 1.32, 95% CI: 1.12-1.55, P < 0.001) were all independent risk factors for long-term CFR. In the subgroup analysis, time to culture positivity was negatively correlated with CFR in patients with DNTM (HR= 0.90, 95% CI: 0.82-0.98, P < 0.05).Conclusions:NTM was associated with a high long-term CFR in PLWH. Further approaches to prevent NTM disease in PLWH are urgently needed.

简介：AbstractBackground:The association between heart rate and 1-year clinical outcomes in heart failure (HF) patients with atrial fibrillation (AF), and whether this association depends on left ventricular ejection fraction (LVEF), are unclear. We investigated the relationship between discharge heart rate and 1-year clinical outcomes after discharge among hospitalized HF patients with AF, and further explored this association that differ by LVEF level.Methods:In this analysis, we enrolled 1760 hospitalized HF patients with AF from the China Patient-centered Evaluative Assessment of Cardiac Events Prospective Heart Failure study from August 2016 to May 2018. Patients were categorized into three groups with low (<65 beats per minute [bpm]), moderate (65-85 bpm), and high (≥86 bpm) heart rate measured at discharge. Cox proportional hazard models were employed to explore the association between heart rate and 1-year primary outcome, which was defined as a composite outcome of all-cause death and HF rehospitalization.Results:Among 1760 patients, 723 (41.1%) were women, the median age was 69 (interquartile range [IQR]: 60-77) years, median discharge heart rate was 75 (IQR: 69-84) bpm, and 934 (53.1%) had an LVEF <50%. During 1-year follow-up, a total of 792 (45.0%) individuals died or had at least one HF hospitalization. After adjusting for demographic characteristics, smoking status, medical history, anthropometric characteristics, and medications used at discharge, the groups with low (hazard ratio [HR]: 1.32, 95% confidence interval [CI]: 1.05-1.68, P = 0.020) and high (HR: 1.34, 95% CI: 1.07-1.67, P = 0.009) heart rate were associated with a higher risk of 1-year primary outcome compared with the moderate group. A significant interaction between discharge heart rate and LVEF for the primary outcome was observed (P for interaction was 0.045). Among the patients with LVEF ≥50%, only those with high heart rate were associated with a higher risk of primary outcome compared with the group with moderate heart rate (HR: 1.38, 95% CI: 1.01-1.89, P = 0.046), whereas there was no difference between the groups with low and moderate heart rate. Among the patients with LVEF <50%, only those with low heart rate were associated with a higher risk of primary outcome compared with the group with moderate heart rate (HR: 1.46, 95% CI: 1.09-1.96, P = 0.012), whereas there was no difference between the groups with high and moderate heart rate.Conclusions:Among the overall HF patients with AF, both low (<65 bpm) and high (≥86 bpm) heart rates were associated with poorer outcomes as compared with moderate (65-85 bpm) heart rate. Among patients with LVEF ≥50%, only a high heart rate was associated with higher risk; while among those with LVEF <50%, only a low heart rate was associated with higher risk as compared with the group with moderate heart rate.Trail Registration:Clinicaltrials.gov; NCT02878811.

简介：与变化的流行延期敏感的服务，怎么为活动用户(亩)保证延期得到要求是为在绿云收音机存取网络(Crun)的downlinkbeamformer设计的大挑战。在这份报纸，我们与分离的率改编认为延期知道的downlinkbeamforming的问题最小化Crun的电源消费。我们经由一个混合整数处理这个问题非线性的节目(MINLP)，然后再用形式表示是的MINLP问题一个混合整数秒顺序锥程序(MI-SOCP)，它当整数变量作为连续的被放松时，是一个凸的程序。把明确的表达基于这，一个放气算法，其计算复杂性是多项式，被建议导出非最优的答案。模拟结果被介绍验证我们的建议算法的有效性。

简介：Inthispaper,opticalpulserepetitionratemultiplicationbasedonaseries-coupleddouble-ringresonatorisproposed.First,thespectralcharacteristicoftheseries-coupleddouble-ringresonatorissimulatedandtheoptimumcouplingcoefficientstoachieveaperiodicflat-toppassbandareobtained.Then,high-qualitypulserepetitionratemultiplicationisrealizedbyperiodicallyfilteringoutspectrallinesoftheinputpulsetrain.DifferentmultiplicationfactorsN2,3,4,5canbeobtainedbyadjustingtheringradii.Inaddition,comparedwithasingle-ringresonator,themultipliedoutputpulsetrainbyaseries-coupleddouble-ringresonatorexhibitsmuchbetterpoweruniformity.

简介：Inthispaper,wehaveinvestigatedtheproblemoftheconvergencerateofthemultipleintegralwheref∈Cn+1([0,T]n)isagivenfunction,πisapartitionoftheinterval[0,T]and{BtHi,π}isafamilyofinterpolationapproximationoffractionalBrownianmotionBtHwithHurstparameterH<1/2.ThelimitprocessisthemultipleStratonovichintegralofthefunctionf.Inviewofknownresults,theconvergencerateisdifferentfordifferentmultiplicityn.Undersomemildconditions,weobtainthattheuniformconvergencerateis2Hinthemeansquaresense,whereisthenormofthepartitiongeneratingtheapproximations.

简介：学习inter-subspecific杂交稻的敏感到气候的条件，小穗状花小穗使肥沃包括indica-japonicahybrid，中间杂种，indica和装饰用的梨树的米饭的四种类型的率(SFR)在2000-2004期间被分析。Theinter-subspecific混血儿比indica和装饰用的梨树米饭在各种各样的气候的条件下面显示出更低的SFR，和高得多的变化，证明inter-subspecific混血儿对生态的条件敏感。在12气候因子之中，影响米饭SFR的关键因素是温度，与是的最重要的因素在圆锥花序flowering(T_7)附近的七天的平均温度。由T_7的SFR温度的一个回归的方程，和由四个重要温度索引的一个全面合成模型被提出。最适温度forinter-subspecific混血儿被估计是26.1-26.6℃，并且为圆锥花序flowering降低安全温度的限制到be22.5-23.3℃，更高出现由平均0.5℃和1.7℃，分别地与indica和装饰用的梨树米饭相比。这建议inter-subspecific混血儿要求合适的气候的条件。在圆锥花序开花期间，合适的日报平均温度was23.3-29.0℃，与在26.1-26.6℃的最合适的。为一个申请例子，为在在中国种区域的关键米饭的inter-subspecific混血儿的最佳标题季节象普通纯系一样一样，当为出发的安全日期的劣等的限制比普通纯系的那些早关于一个十天的时期时。

简介：Wedemonstratedamonolithic,compact,diode-pumpedgain-switchedNd:YVO4laserat1.064μmwavelengthwithcontrollablerepetitionrateof1Hzto25kHz.Stablegain-switchedpulsetrainwithmaximumrepetitionrateof25kHzandpulsewidthof16nswasobtained.

简介：根据输入的开车的率更新参数，率依赖者Prandtl-Ishlinskii(PI)模型广泛地在磁滞现象建模和赔偿被使用。以便改进当模特儿的精确性，独立以低、高的开车的率识别的二个PI模型通过一条联合法律被合并。为驾驶piezo的基于弯曲的机制，低抑制比率使使结构的颤动激动容易。作为结果，测量磁滞现象环极大地被弄歪，识别PI模型的当模特儿的精确性显著地被影响。在这份报纸，作为控制输入利用附加正弦曲线信号的一个新奇时间有效的参数鉴定方法被建议。这个方法有效地避免结构的颤动的刺激。另外，作为附加正弦曲线信号的开车的率盖住一个宽范围，为为率依赖建模要求的所有系数能通过仅仅试验性的数据的一个集合被识别。当模特儿的磁滞现象和追踪实验的轨道在2-DOF上被执行驾驶piezo的基于弯曲的机制。试验性的结果证明联合磁滞现象模型在基于弯曲的机制的全部工作范围上维持当模特儿的精确性。机制磁滞现象被反的PI模型的使用显著地作为前馈控制控制器压制；并且当一个反馈环也被合并时，更好的结果被完成。基于弯曲的机制的追踪的表演极大地被改进。