简介：Fournuclearpowerprojects,namelyGuangdongLing'aophaseIIproject,QinshanNo.2phaseIIproject,GuangdongYangjiangprojectandZhejiangSanmenprojectobtainedpermissiontobeconstructedfromtheState.Theirgeneratingcapacityisplannedtohave7350MW.Preconstructionworkofothernuclearpowerprojects,suchasLiaoningDalian,ShandongHaiyang,FujianHui'anpowerplantsandQinshanNo.1phaseⅡprojectisinprogress.

简介：HyperbranchedaromaticpolymerswerepreparedbyFriedel-CraftsreactionwithLewisacid,AlCl3andZnCl2,asthecatalysts.Inthiswork,hyperbranchedpolybenzyl(PB)andpoly(methylene)naphthalene(PN)weresynthesizedandcharacterizedby1H-NMRandGPC.Inaddition,theirflorescencepropertiesweremeasuredwithsteady-stateflorescencespectrainTHFandethylenedichloride.Thequantumyieldsofpolybenzylandpoly(methylene)naphthaleneinethylenedichloridearemuchlargerthanthoseinTHF.``

简介：散开的磁性和微观结构退火了[Ta/Nd/NdFeB/Nd/Ta]薄电影被调查了。这些电影被在为10min的650℃退火与Nd/NdFeB层(R=0～3.3)的各种各样的厚度比率在Si底层上扔，然后扩散了并且结晶。没有Nd层的电影显示出软磁性的行为和a-Fe阶段的高内容。有R的电影>=1与大约20kOe的高coercivity显示出好难磁性。

简介：Thestereoregularpolymerizationofmethylmethacrylate(MMA)havebeeninvestigatedwithchiralanioniccomplexinitiator[FILi-(-)SP]intoluene,THFandtoluene/THF[1/1(v/v)].ThetacticitiesofPMMAsobtainedinthethreesolventshavebeenfoundtobemainlyasyndiotactictriads(s-PMMA)withcontentof72.3,67.7and71.4%,respectively.

简介：Introduction.Poly(N-vinylcarbazole)(PVCZ)hasreceivedmuchattentionasarepresentativephotoconductivepolymerandextensivestudiesonmechanical,physical,chemicalandelectricalpropertieshavebeenreported'’.Ingeneral,thePVCZobtainedbyradicalandordinarycanonpolym...

简介：在这个工作，在dodecyl-benzenesulfonic酸和钠碳酸盐之间的使成粒状高在实验室规模被调查砍混合器。包括主要碳酸盐尺寸，文件夹内容，impeller速度，和操作温度，明确的表达参数和过程变量的效果被相关到产品小粒的性质。实验的设计和变化的分析被联合分析试验性的数据，并且结果证明有更少好粒子的更大的小粒尺寸能被采用更高的文件夹内容和更大的钠碳酸盐尺寸获得。impeller的shear力量能广泛地打破oversized小粒。文件夹内容在与二种钠碳酸盐形成的小粒的flowability上施加了形成对照的效果，因为在固体的液体浸透的差别可能。同轴的尺寸分析决定的溶解率证明高文件夹内容对溶解性能，和在亨特之间的关系有益颜色和测试参数被评估。这个工作的结果能在粉末为过程控制和优化被用作可靠指导净化的生产。

简介：AbstractPurpose:In the surgical treatment of paediatric forearm fractures, plate-screw and titanium elastic nails are used. During the transformation of ligamento-osseous structures from adolescence form into adult form, more stable fixation is required. The aim of this study was to evaluate the results of locked intramedullary nail fixation in adolescent forearm fractures.Methods:A retrospective examination was made on 36 adolescent patients who underwent surgery with locked intramedullary nail fixation due to a forearm fracture. The included patients were in the adolescent age group (12-17 years), did not meet conservative follow-up criteria and had unstable fractures (>10° angulation and <50% cortex continuity after plaster casting). Patients were excluded from the study if they were aged >18 years or <12 years, had Gustilo-Anderson type 2/3 open fractures, multi-trauma, history of physeal injuries or could not be contacted during follow-up. Patients’ age, gender, body mass index, affected side, and the pronation and supination values during follow-up were noted. Functional evaluation of the patients was performed with disabilities of the arm, shoulder and hand score and the surgical outcomes were evaluated according to the Price criteria. The time to union, infection during follow-up, re-fracture and vascular nerve damage were also examined. Data were analyzed using SPSS 22 Windows package program software.Results:The patients comprised 30 males and 6 females (ratio, 5:1) with a mean age of (14.7 ± 2.1) years (range, 12-18 years). According to the Price criteria, the results of 33 patients were excellent, 3 were good and there were no moderate or poor cases. The mean disabilities of the arm, shoulder and hand score was 11.2 ± 6.1 (range, 4-28). The mean time to union was (8.7 ± 2.2) weeks (range, 6-14 weeks), while patients aged >15 years had prolonged time to union ([11.1 ± 1.8] weeks). There were no non-unions, re-fractures or infections. No complications were observed during implant removal. None of the patients had sensorial radial nerve injury or tendon damage.Conclusion:The locked intramedullary nailing technique, which is minimally invasive and provides biological fixation, was found to be successful and safe in the treatment of adolescent forearm fractures.

简介：ObjectToexploretheproceduresinper-operativeharvestingandmanagementoffreshhumancochlearspecimensforresearch.MethodsDuringtrans-cochlearsurgerytoremovelargepetro-clivalmeningiomascausinglife-threateningcompressiononthebrainstem,cochleaearenormallydestroyedanddrilledawayinordertoreachtheapicalpetrousandclivusregion.Insteadthecochleacanbedissectedoutafterethicalper-missionwasobtainedfromthelocalethicalcommittee(EPN)andallowancegainedfromthepatients.Sur-geryisperformedbyateamconsistingofoto-andneurosurgeonsasatwo-dayprocedurewithtotalpetro-sectomyincombinationwithaninferiorre-routingofthefacialnerve.Fixationofthecochleaewasdoneintheoperatingroomassoonasthespecimenshadbeenseparatedfromthetemporalbones.Decalcificationbeganafterhours’toovernight’sfixationfor4weeks.Sectioningparalleltothemodiolus(mid-modiolus)wasperformedwithacryostatmicrotome.Thesectionsweresubjectedtoimmunofluorescence(IF).ResultsUsingfreshlyprepared4%paraformaldehyde(PFD)solution,adequatefixationoffineinnerearstructureswasachievedwithhours’immersionofthecochlearspecimens.Decalcificationin6.2%ethylenedi-amine-tetraceticacid(EDTA)solutionfor4weeksyieldedathoroughlydecalcifiedcochlea.Experiencesinprocessing14humancochleaeandanalysingmainlandmarksinfivehumaninnerearplastic/siliconecastsshowedthattheovalwindow/stapesfootplatearebackwardtilted,atanangleabout15degrees,fromtheplaneperpendiculartothemodiolaraxis.Thedistancefromthemodiolarapextotheanteriorborderoftheovalwindow/footplateintheseinnerearcastsmeasuredbetween4and5mm.HighqualityIFstainingwasobtained.ConclusionSurgicallyobtainedhumancochlearspecimen,whenproperlyprocessed,containside-allypreservedantigenicityforimmunohistochemicalstudy.Adequateorientationduringsectioninghelpsob-tainoptimalmid-modiolarsectionsshowingfi

简介：Nowadays,numerouscommercialelectrocardiographs(ECG)have500Hzoutputsamplingrate,i.e.,2mscorrespondingsamplinginterval.Medicalworkerswhohavenobackgroundofsignalprocessingmayworryaboutwhethersuchlow500Hzoutputsamplingratedatacouldsupporthigh-precisionestimationofelectrocardiogramparametersbybeingup-sampled.Withintentiontoclarifytheproblemtothemedicalworkers,thispapertakessomesimulatingexperimenttoillustrateit.TheexperimentchosetheRRintervalandRpeakamplitudeasrepresentativeparameterstobeestimated.Theobtainedresultswereasfollows:forRRintervalparameter,itsestimationerrorcanbeloweredtobelow0.3msbyup-sampling;forRpeakamplitude,itsestimationerrorcanbereducedtobelow2.0μVbyup-sampling.ItisbelievedthatotherECGparameterestimationcanalsobeimprovedsimilarlybyup-sampling500Hzdata.

简介：Biodiesel(fattyacidalkylesters),analternatetofossilfuel,hasthetendencyofautoxidationandhencerequiresantioxidantsforlongtermstorage.TheinfluenceofsyntheticandnaturalantioxidantsontheoxidativestabilitywasanalysedforfreshFAMEs(fattyacidmethylesters)obtainedfromheveabrasiliensisat140C.HigheractivitywasobservedforsyntheticantioxidantsfollowingtheorderofGA>BHT>DTBP>Q>GT-M>PH-M>GT-C,whereastheoxidativestabilityofstoredFAMEssamplesmeasuredat110Crevealsanearlyinversetrend.StoragestabilitywastestedfortheFAMEsobtainedfromheveabrasiliensisstoredat30C,afteradditionofsyntheticandnaturalantioxidants—butylatedhydroxytoluene(BHT),2,6-di-tert-butylphenol(DTBP),quercetin(Q),gallicacid(GA),methanolextractsfromgreentea(GTM),pomegranatehull(PH-M),andchloroformextractofgreentea(GT-C).Antioxidantactivitiesabove1500ppmwasintheorderofDTBP>BHT>GA>GT-C>GT-M>Q>PH-M.SyntheticantioxidantshavebeenfoundmoreefficienttoimprovethestoragestabilityofFAMEsobtainedfromheveabrasiliensis.DTBPinparticularhasthehighestprotectionfactor.

简介：Afterpre-cultureandtreatmentofosmosis,cotyledonsofimmaturepeanut(ArachishypogaeaL.)zygoticembryosweretransformedviaparticlebombardmentwithaplasmidcontainingachimerichphgeneconferringresistancetohygromycinandachimericintron-gusgene.Selectionforhygromycinresistantcallusesandsomaticembryoswasinitiatedat10thdpost-bombardmentonmediumcontaining10-25mg/Lhygromycin.Undercontinuousselection,hygromycinresistantplantletswereregeneratedfromsomaticembryosandwererecoveredfromnearly1.6%ofthebombardedcotyledons.ThepresenceandintegrationofforeignDNAinregeneratedhygromycinresistantplantswasconfirmedbyPCR(polymerasechainreaction)fortheintron-gusgeneandbySouthernhybridizationofthehphgene.GUSenzymeactivitywasdetectedinleafletsfromtransgenicplantsbutnotfromcontrol,non-transformedplants.Theproductionoftransgenicplantsaremainlybasedonanewlyimprovedsomaticembryogenesisregenerationsystemdevelopedbyus.

简介：Ageneratoroftheglidingarcjet(GAJ),whichisdrivenbyatransversemagneticfield,isdevelopedtoproducenon-equilibriumplasmaatatmosphericpressure.ThegastemperatureisestimatedusingthespectrumofOHradicalstobeabout2400±400K.Thedeterminationsofelectrontemperatureandelectrondensitybyusingaline-ratiomethodareelaboratedfortheglidingarcjetplasma.Thisline-ratiomethodisbasedonacollisional-radiativemodel.Theexperimentresultsshowthatelectrontemperatureisabout1.0eVandelectrondensityisabout6.9×1014cm-3.Obviously,theplasmaofGAJisinanon-equilibriumstate.

简介：形态学和机械性质(ethylene-octene)poly，注射塑造的动态收拾行李获得的共聚物(POE)被机械测试调查，微分扫描热量测定(DSC)，fourier变换红外线的光谱学(英尺红外)和扫描电子显微镜学(SEM)。机械测试与低octene内容和高分子的重量表演发现那仅仅POE明显的反应为外部砍地。进一步的调查被DSC，英尺红外，和SEM做了以便弄明白那现象的原因。最后，POE微观结构形成在下面的假想机制砍地被建议了。为有低octene内容和高分子的重量的POE，取向度和机械性质两个都实质地增加在下面砍地。为有低octene内容和低分子的重量的POE，取向度和crystallinity增加在下面砍地，而是它不是戏剧性地为机械性质受益。为有高octene内容和高分子的重量的POE，shear地在形态学和机械性质上有小效果。

简介：Inthispaper,basedonthesymboliccomputingsystemMaple,thedirectmethodforLiesymmetrygroupspresentedbySen-YueLou[J.Phys.A:Math.Gen.38(2005)L129]isextendedfromthecontinuousdifferentialequationstothedifferential-differenceequations.Withtheextendedmethod,westudythewell-knowndifferential-differenceKPequation,KZequationand(2+1)-dimensionalANNVsystem,andboththeLiepointsymmetrygroupsandthenon-Liesymmetrygroupsareobtained.

简介：包含1,3,4-oxadiazole单位的热地稳定的聚合物作为溶剂在pyridine与芳香/脂肪族的二度酸氯化物通过芳香/脂肪族的bis-tetrazole混合物的Huisgen反应被综合了。获得的聚合物甚至在象DMSO和DMF那样的极的aprotic溶剂不可溶解或稍微可溶。相对高的固有的粘性价值(0.611.33dL/g，在在25点的0.125%H2SO4????????????????????????倠？？

简介：

简介：ToobtainthermotolerantmutantsofG.oxydans,whichcanenhancethetransformationrateofL-sorboseto2-Keto-L-gulonate(2-KLG)at33℃inatwo-stepprocessofvitaminCmanufacture,ionbeamwasusedasamutationsource.GluconobacteroxydansGOandBacillusmegateriumB0wereusedinthisstudy.TheoriginalstrainGluconobacteroxydansGOwasmutatedbytheheavyionimplantationfacilityattheInstituteofPlasmaPhysics,ChineseAcademyofSciences.SeveralmutantsincludingGluconobacteroxydansGI13wereisolatedandcoculturedwithBacillusmegateriumB0at33℃inshakingflasks.TheaveragetransformationrateofthenewmixedstrainGI13-B0inpergram-moleculereached94.4%aftersevenpassagesinshakingflasks,whichwasincreasedby7%whencomparedwiththeoriginalmixedstrainG0-B0(GluconobacteroxydansG0andBacillusmegateriumB0).Moreover,thetransformationrateofI13B0wasstableat94%attemperaturesrangingfrom25℃to33℃,whichwouldbeofmuchvalueinreducingenergyconsumptioninthemanufactureofL-ascorbicacid,especiallyintheseasonofsummer.Toclarifysomemechanismofthemutation,thespecificactivitiesofL-sorbosedehydrogenaseinbothG0andGI13wereestimated.

简介：ZrO2-WCcomposites展览可比较的机械性质部分为一些应用作为传统的WC公司材料，它提供一个机会给代替WC公司。在这研究，2mol.%Y2O3与40vol.%WC稳定了ZrO2composites在1150獮愠潭杮映汩?潣灭湯湥獴琠牨畯桧挠慨杲?牴湡晳牥洠'炭鷽?被巩固湩??映汩?瑡琠敨洠汯'虥N牡氠癥汥.獥吗？？

简介：AbstractBackground:The efficacy of hemodialysis (HD) is closely associated with patient survival time and quality of life. The classical method (CLM) to calculate the urea clearance index (Kt/V) and urea reduction rate (URR) requires multiple blood tests. A novel method that may be used as a noninvasive alternative to CLM is required.Methods:Based on the urea kinetic model, a new method, named the "assessment method" (ASM), was established to calculate blood urea nitrogen after HD, based on parameters obtained during HD. The consistency of the Kt/V and URR values between the ASM and CLM was evaluated in 41 patients from the China-Japan Friendship Hospital between September 2017 and December 2018.Results:Forty-one patients (24 males and 17 females; mean age, 55.7 ± 14.2 years) undergoing regular HD in our hospital were randomly selected for this study. The blood flow rate was 244.5 ± 19.6 mL/min and the dialysate flow rate was 500 mL/min. We obtained Kt/V (CLM = 1.40 ± 0.06, ASM = 1.37 ± 0.07) and URR (CLM = 68.6 ± 6.4%, ASM = 67.7 ± 7.2%) values. Paired t-test indicated no significant differences between the ASM- and CLM-derived values. The intraclass correlation coefficients were 0.907 and 0.916 for Kt/V and URR, respectively. Similarly, Bland-Altman plots suggested good concordance between the 2 methods.Conclusions:The Kt/V and URR values calculated using the ASM and CLM were in significant agreement, and both can be used to effectively assess the adequacy of HD in patients undergoing maintenance HD. The ASM is an effective, rapid, inexpensive, and noninvasive alternative to the CLM for obtaining Kt/V and URR values. The ASM has good potential for clinical application, particularly for patients in areas of low socioeconomic status.

简介：Theresultsfromahybridapproachthatcombinesamesoscalemeteorologicalmodelwithadiagnosticmodeltoproducehigh-resolutionwindfieldsincomplexcoastaltopographyareevaluated.Thediagnosticwindmodel(CaliforniaMeteorologicalModel,CALMET)with100-mhorizontalspacingwasdrivenwithoutputsfromtheWeatherResearchandForecasting(WRF)modeltoobtainnear-surfacewindsforthe1-yearperiodfrom12September2003to11September2004.Resultswerecomparedwithwindobservationsatfoursites.Traditionalstatisticalscores,includingcorrelationcoefficients,standarddeviations(SDs)andmeanabsoluteerrors(MAEs),indicatethatthewindestimatesfromtheWRF/CALMETmodelingsystemareproducedreasonablywell.Thecorrelationcoefficientsarerelativelylarge,rangingfrom0.5to0.7forthezonalwindcomponentandfrom0.75to0.85forthemeridionalwindcomponent.MAEsforwindspeedrangefrom1.5to2.0ms-1at10metersabovegroundlevel(AGL)andfrom2.0to2.5ms-1at60mAGL.MAEsforwinddirectionrangefrom30to40degreesatbothlevels.AspectraldecompositionofthetimeseriesofwindspeedshowspositiveimpactsofCALMETinimprovingthemesoscalewinds.Moreover,combiningtheCALMETmodelwithWRFsignificantlyimprovesthespatialvariabilityofthesimulatedwindfields.ItcanbeconcludedthattheWRF/CALMETmodelingsystemiscapableofprovidingadetailednear-surfacewindfield,butthephysicsinthediagnosticCALMETmodelneedstobefurtherimproved.