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简介：Thecombinedeffectsofvoidsizeandvoidshapeonthevoidgrowtharestudiedbyusingtheclassicalspectrummethod.AninfinitesolidcontaininganisolatedprolatespheroidalvoidisconsideredtodepictthevoidshapeeffectandtheFleck-Hutchinsonphenomenologicalstraingradientplasticitytheoryisemployedtocapturethesizeeffects.Itisfoundthatthecombinedeffectsofvoidsizeandvoidshapearemainlycontrolledbytheremotestresstriaxiality.Basedonthis,anewsize-dependentvoidgrowthmodelsimilartotheRice-Traceymodelisproposedandanimportantconclusionaboutthesize-dependentvoidgrowthisdrawn:thegrowthrateofthevoidwithradiussmallerthanacriticalradiusrcmaybeignored.Itisinterestingthatrcisamaterialconstantindependentoftheinitialvoidshapeandtheremotestresstriaxiality.

简介：MassselectionforfastgrowthwasconductedinthreePacificoyster(Crassostreagigas)stocksfromChina,JapanandKoreausingpreviouslyestablishedlines(CS1,JS1,andKS1).Todeterminewhethercontinuousprogresscanbeachievedbyselectionforgrowth,theprogenyofthreesecond-generationPacificoysterlineswasselectedforshellheightandevaluatedviaa400-dayfarmingexperiment.Whenharvestedattheendoftheexperiment,theselectedcrossesofCS2,JS2,andKS2linesgrewby9.2%,10.2%and9.6%largerthanthecontrolcrosses,respectively.Duringgrow-outstage,thegeneticgainofthreeselectedlineswas(10.2±1.4)%,(10.4±0.3)%,and(8.4±1.6)%,respectively;andthecorrespondingrealizedheritabilitywas0.457±0.143,0.312±0.071and0.332±0.009,respectively.Theseresultsindicatedthattheselectionforfastgrowthachievedsteadyprogressinthesecondgenerationofoyster.OurworkprovidessupportiveevidenceforthecontinuityofthePacificoysterselectivebreedingprogram.

简介：这篇文章在生长曲线模型题目为回归系数考虑线性评估者的考虑到不完全的椭圆体的限制。为分别地，在同类、非同类的线性评估者的班上可被考虑的线性评估者的必要、足够的条件在二次的损失功能下面被获得。他们是在文学的一些存在结果的归纳。

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简介：Effectsofthemixtureofβ-ecdysoneandpolypodine-B(2:1W/W)onthemoultingandgrowthofprawn,Penaeusorientalisswerestudiedinlaboratorybyrearingtheanimalwiththeaddedcompounddiets.Theresultsshowedthattheadditionofthemoultinghormone(M.H)mixturetocompounddiets,from1.33×10-6to30×10-6,couldincreasemoultingactivityandgrowthrateoftheprawntodifferentextents,amongwhichthe5.33×10-6-10.67×10-6additionhadstatisticallysignificanteffects.However,60×10-6addeddietscausedmoultingandgrowthinhibitionsandcuticlethickening.Theanalysesofprotein,waterandashcontentsoftheprawnshowednoremarkabledifferencesbetweenhormonedosedanimalsandthecontrol.

简介：Thespectrumvariancem0,peakfrequencyω0andpeaknessfactorpareexpressedintermsofnondimensionalfetchanddurationbymakinguseofrelationswhicharederivedthroughcomparingandanalyzingexistingempiricalformulasforthegrowthofsignificantwaveheightandperiod.ThemainfeaturesofspectrumgrowthasspecifiedbytheseparametersagreewiththoseoftheJONS-WAPexperiments.Forgivenwindspeedandfetch,thehighfrequencypartsbeyondthepeaksofshallowwaterspectraalmostcoincidewiththatofthecorrespondingdeepwaterspectrum,whereasthelowfrequencypartsdifferappreciably.ThemethoddevelopedinthispaperpredictssmallersignificantwaveheightaswellassmallerwaveperiodforshallowwaterspectraincontrasttothetheoreticalresultofKitaigorodskiiefal,inwhichthepeakfrequency,andconsequentlythesignificantwaveperiod,remainsbasicallyunchangedfordifferentwaterdepths.Spectraarefurtherreducedtoaforminwhichonlysignificantwaveh

简介：Thequantumcorrespondenceofoneparticularsignatureofclassicalchaos———theexponentialinstabilityfmotioncanbecharacterizedbytheinitialexponentialgrowthrateofthespreadingwidthofthepropagatingquantumwavepacket.Inaformerstudy~[1]aonetoonecorrespondencehasbeenfoundbetweentheinitial

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简介：AbstractObjective:To build a reference fetal growth chart for the Chinese population based on fetal ultrasound measurements.Methods:This was a multicenter, population-based retrospective cohort study. Longitudinal ultrasound measurement data were collected from 24 hospitals in 18 provinces of China from 1st September through 31st October of 2019. The estimated fetal weight (EFW) was calculated based on head circumference, abdominal circumference, and femur length using Hadlock formula 3. Fetal growth curves were estimated using a two-level linear regression model with cubic splines. All participants were divided into two groups: the northern group (n = 5829) and the southern group (n = 3246) based on the geographical division of China and male fetus group (n = 4775) and female fetus group (n = 4300) based on fetal gender. The EFW was compared by fetal gender and geographical group. All statistical models were adjusted for maternal sociodemographic characteristics.Results:A total of 9075 participants with 31,700 ultrasound measurement records were included in this study. Male fetuses demonstrated significantly larger EFW compared to female ones starting at 16 weeks of gestation and extending to delivery (global test P < 0.01). The overall geographic difference in EFW was significant (global test P = 0.03), and week-specific comparisons showed that the northern group had a greater EFW starting at 15 weeks of gestation and extending to 29 weeks of gestation, although this difference did not extend to the time of delivery. The Z-score of EFW confirmed that our Chinese fetal growth charts differed from previously published standards.Conclusion:This study provides EFW and ultrasound biometric reference measurements for Chinese fetuses and reveals differences from other fetal growth charts. The chart is worth promoting in more regions of China but should be tested prudently before use.

简介：AbstractFetal growth restriction (FGR) is a common complication of pregnancy associated with higher rates of perinatal mortality and morbidity, as well as a variety of long-term adverse outcomes. To standardize the clinical practice for the management of FGR in China, Fetal Medicine Subgroup, Chinese Society of Perinatal Medicine, Chinese Medical Association and Maternal-Fetal Medicine Committee, Chinese Society of Obstetrics and Gynecology,Chinese Medical Association organized an expert committee to provide official consensus-based recommendations on FGR. We evaluated the evidence provided by relevant high-quality literature, performed a three-round Delphi study and organized face-to-face meetings with experts from multidisciplinary backgrounds. The consensus includes the definition, prenatal screening, prevention, diagnosis, monitoring and management of FGR.

简介：AbstractBackground:The fetal growth charts in widest use in China were published by Hadlock >35 years ago and were established on data from several hundred of American pregnant women. After that, >100 fetal growth charts were published around the world. We attempted to assess the impact of applying the long-standing Hadlock charts and other charts in a Chinese population and to compare their ability to predict newborn small for gestational age (SGA).Methods:For this retrospective observational study, we reviewed all pregnant women (n = 106,455) who booked prenatal care with ultrasound measurements for fetal biometry at the Shenzhen Maternity and Child Healthcare Hospital between 2012 and 2019. A fractional polynomial regression model was applied to generate Shenzhen fetal growth chart ranges for head circumference (HC), biparietal diameter (BPD), abdominal circumference (AC), and femur length (FL). The differences between Shenzhen charts and published charts were quantified by calculating the Z-score. The impact of applying these published charts was quantified by calculating the proportions of fetuses with biometric measurements below the 3rd centile of these charts. The sensitivity and area under the receiver operating characteristic curves of published charts to predict neonatal SGA (birthweight <10th centile) were assessed.Results:Following selection, 169,980 scans of fetal biometry contributed by 41,032 pregnancies with reliable gestational age were analyzed. When using Hadlock references (<3rd centile), the proportions of small heads and short femurs were as high as 8.9% and 6.6% in late gestation, respectively. The INTERGROWTH-21st standards matched those of our observed curves better than other charts, in particular for fat-free biometry (HC and FL). When using AC<10th centile, all of these references were poor at predicting neonatal SGA.Conclusions:Applying long-standing Hadlock references could misclassify a large proportion of fetuses as SGA. INTERGROWTH-21st standard appears to be a safe option in China. For fat-based biometry, AC, a reference based on the Chinese population is needed. In addition, when applying published charts, particular care should be taken due to the discrepancy of measurement methods.

简介：n种类的二个催化出生的模型(n≥2)驾驶withexchange的生长处理的总数被建议并且比较。在里面以前一个，交换反应与率核K_m发生在任何二总数A_k~m和一样的种类的A_j~m之间(k，j)=K_mkj(m=1，2，...，n，n≥2)，并且A~n种类的总数催化A~lspecies的单体出生(l=1，2，...，n-1)与催化作用率核J_l(k，j)=J_lkj~υ。运动行为借助于吝啬地的理论被调查。我们发现A~l种类的进化行为ofaggregate尺寸分发a_k~l(t)关键地取决于催化作用率参数υ的值：(ⅰ)a_k~l(t)在υ≤的情况中遵守常规可伸缩法律0，(ⅱ)a_k~l(t)在υ>的情况中满足一种修改可伸缩的形式0。在第二个模型，A~l种类催化的A~n种类的单体出生的机制根据第一个模型被增加，也就是说，A~l和A~n种类的总数催化对方到causemonomer出生。A~l和A~n种类的运动行为被发现为不同的υ掉进二个范畴：(与υ≤服从常规可伸缩的形式的ⅰ)生长0，(在有υ>的有限时间的ⅱ)gelling0。

简介：gamma-LiAlO2单身者水晶是有希望的底层为轧了heteroepitaxy.In这篇论文，我们在场由修改Czochralski的大尺寸的LiAlO2水晶的生长方法。水晶质量被高分辨率的X光检查衍射并且化学蚀刻描绘。结果证明成长得当的水晶在17.7-22.6弧秒的半最大值(FWHM)与完整的宽度有完美的质量并且蚀刻坑密度(0.3-2.2)x10~4cm~(在整个水晶boule的水晶boule.The底部的-2)显示出最好的质量。光传播系列从对水晶从0.2～5.5亩m是透明的并且完全变得在6.7亩m波长附近吸收的红外展览紫外。在近紫外的区域的光吸收边是大约191nm。

简介：Forestgrowthismainlycurrentlymonitoredusingin-situmeasurementsinnortheastofChina.Toeffectivelymonitorforestgrowthdisturbanceatlargescale,weattemptedtouseremotesensingtechnique,particularly,timeseriesMODISdatafrom2004to2006.Theannualtimeseriesof8-dayenhancedvegetationindex(EVI)datasetwasgeneratedandsmoothedusingaSavitzky-Golayfilter.TheEVItrajectoryduringgrowthseasonwassimulatedusingalogisticmodel.Fromthesimulatedtrajectory,theEVIareaofgrowthseasonandannualEVIentropywerecalculated.Thesetwofactorswerecombinedtomapthedisturbanceregionsofforestgrowth.Finally,thedisturbanceregionswereverifiedusingasetofrandomsamples.Theresultindicatesthatthedisturbancepointshavedistinctivelyhigherentropyandlowerpeak.SomeofthesepointsalsoshowabruptEVIdeclineduringthemidseasonofthepeakphasesordoublepeaks.Thisapproachisdemonstratedtobefeasiblefordisturbancemonitoringofforestgrowth.

简介：Objective:Totesttheeffectsofsalidrosideonformationandgrowthofgliomatogetherwithtumormicroenvironment.Methods:SalidrosideextractedfromRhodiolaroseawaspurifiedandtreatedonhumangliomacellsU251attheconcentrationof20μg/mL.3-(4,5-dimethylthiazol-2-yl)-2,5-dephenyltetrazoliumbromide(MTT)assayforcytotoxicityandflowcytometry(FCM)forcellcycleanalysiswereperformed.Thenforinvivostudy,xenotransplantationtumormodelinnudemicewasgeneratedandtreatedwithsalidrosideattheconcentrationof50mg/kg.dfortotally20d.Bodyweightandtumorsizeweredetectedevery2dafterthetreatment.Thelevelsof8-isoprostane,superoxidedismutase(SOD)andmalondialdehyde(MDA),specialmarkersforoxidativestress,weredetectedwhileimmunofluoresencestainingwasperformedforastrocytedetection.Results:Forinvitrostudy,salidrosidecoulddecreasetheviabilityofhumangliomacellsU251andthegrowthofU251cellsatG0/G1checkpointduringthecellcycle.Forinvivostudy,salidrosidecouldalsoinhibitthegrowthofhumangliomatissueinnudemice.Thebodyweightofthesenudemicetreatedwithsalidrosidedidnotdecreaseasquicklyascontrolgroup.Inthetumorxenotransplantationnudemicemodel,micewerefoundofinhibitionofoxidativestressbydetectionofbiomarkers.Furthermore,overgrowthofastrocytesduetothestimulationofoxidativestressinthecortexofbrainwasinhibitedafterthetreatmentofsalidroside.Conclusions:Salidrosidecouldinhibittheformationandgrowthofgliomabothinvivoandinvitroandimprovethetumormicroenvironmentviainhibitionofoxidativestressandastrocytes.

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简介：因为它揭示在人的活动和自然环境之间的重要空间关系，胡林娥在中国被认为是最大的地理发现之一。胡林娥的双方上的人口的空间进化为都市化和地区性的开发有重要含意并且自从改革和洞起来政策的实现，在1978在中国在戏剧的经济、社会的变化期间吸引了普遍注意。用地理信息系统(GIS)技术，这份报纸由从1982～2010构造瓷器普查数据的一个空间数据库在每个方面上学习了胡林娥的稳定性和人口生长的空间模式。调查结果如下：(1)在最后30年里，胡林娥留下了相对，马厩，而是人口变化的一个新趋势开始出现了。人口比率任何一个方面，也就是东南一半(SEH)和西北一半(NWH)，胡林娥遗体在粗略地94:6(她：NWH)。引人注目，当那稍微在NWH一直在增加，，时，在胡林娥的SEH的人口的比例稍微一直在减少后者得益于它自然人口生长的更高的率。(2)胡林娥的双方上的人口生长的空间模式是相当不同的。在SEH的人口集中的度比NWH快增加了。有否定人口生长率的区域很快膨胀了；这些主要位于QinlingMountains-Huaihe河带和东北中国的南方。同时，有快人口生长率的区域主要在长江三角洲，珀尔河三角洲，和北京天津大主教被集中区域。因此，在SEH的人口生长的空间模式介绍了能被称为马修效果模式的一个集中模式。(3)在NWH的人口生长的空间模式能被认为是相对平衡模式。在NWH，人口生长率是积极的，人口集中的度是很低的。有许多少数人口，位于通常住在一个驱散的模式，但是由于优先的人口政策有自然人口生长的更高的率的NWH。也有有在NWH的人口生长的否定的率的一些区域，它主要近被定位到胡林娥和古老的丝绸道路。(4)以后，胡林娥的双方上的人口生长的空间模式可以继续演变。为SEH，吸引更多的人到小、

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