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简介：AbstractUpper respiratory tract samples are the most commonly used samples for coronavirus disease 2019 (COVID-19) diagnosis. The samples collected from the nasopharynx are preferred for viral nucleic acids detection. Commercial nasopharyngeal swabs (NPSs) are the major factor that influences the sampling quality. We here evaluated the acceptability and efficiency of NPSs from five manufacturers by examining the concentration of glyceraldehyde-3-phosphate dehydrogenase gene (GAPDH) retrieved from the swabs using the RT-PCR method. Significant different concentrations of GAPDH were detected, ranged from 4.36 × 108 copies/mL to 6.98 × 1010 copies/mL among the five swabs (P < 0.05). The designation of the swab head, with or without tip expansion, had limited influence on the collection efficiency. The discrepancy among the NPSs emphasized the improvement of the swab head material.

简介：Englishuseuniversalitycausesthemajorityinternationalenterprisestochooseittotakedevelopsthemarkettheadvantageousweapon,EnglishandtheinternationaltradeorganicsynthesisiscommercialEnglish.Theglobaleconomicintegrationisfurtherdeepening,thecommercialactivityisdaybydayfrequent,thecommercialcontactisdaybydayclose,justliketheinternationaltradeservicedevelopmentthefireliketea,eachkindofchallengeandthenewtimeuniquefrictionalsofollowonsomebody’sheels.EnhancesthecommercialEnglishintheinternationaltradeserviceutilization,willbringthemaximizedbenefitintheverygreatdegreeforthecompanyortheenterprise.

简介：Memeplaysanimportantroleinthedevelopmentofadvertisementasaunitofculture.Itsreplicationandtransmissionprovideaneffectivemeansforcreatingadvertisementsandanewwayforustoanalyzeadvertisinglanguage.Twowaysincludingmemeticgenotypeandmemeticphenotypeformemestobereplicatedandtransmittedintheadvertisinglanguageareanalyzed.Then,howtosuccessfullycreatecommercialadvertisementsisexplored.Finally,itisconcludedthattheconcise,familiar,popularandoriginalmemescancontributetosuccessfulcommercialadvertisements.

简介：这篇文章介绍分别地为干净汽油的生产包含盒子的MIP技术的细节，为生产干净汽油的盒子为与丙烯的增加的输出生产汽油结合了柴油机和盒子的生产。生效的MIP单位的表演被包。测试结果证明了MIP技术被由干燥气体和泥浆的减少的收益和增加的全部的液体收益证实了的改进产品分发描绘；在汽油由减少的石蜡和硫内容证实了的升级的产品质量；并且由催化剂的减少的单位消费和过程单位的减少的精力消费证实了的更多的理想的techno经济的指示物。

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简介：and model arbitration agreement should be provided. Online arbitration rules only apply to the parties have selected the online arbitration and the e-mail address or other electronic communication measure are available. All the documents should be sent both online and via mail.,//wipo2.wipo.int/process1/report/finalreport.html . 11. WIPO International Conference on Dispute Resolution in Electronic Commerce,the parties and the arbitrators can send documents to the special system of the arbitration institution

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简介：the arbitration should be finality. Both parties should enforce the award once it be issued. Also the fee for international arbitration usually is cheaper than international litigation.,The another important advantage of international arbitration is that the parties are free to contract where,the Stockholm Chamber of commerce (SCC) allows for significant party autonomy in selecting the applicable procedural rules to be followed by the arbitrators. Such common principle makes international arbitration be accepted by the international business community more and more. The relative parties can choose the rules that are fittest for them.

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简介：ThefirstcommercialapplicationofhomemadeRAX-2000adsorbentforaromaticswastestedsuccessfullyonthearomaticsunitofQiluCompany,SINOPECandqualifiedparaxyleneproducthadbeenproduced.158tonsofhomemadeRAX2000adsorbenthadbeenusedonthearomaticsunitofQiluCompany.Thecostdecreasedby10,000,000RMBascomparedwithpurchasingimportedadsorbent.AfterRAX-2000adsorbentwasappliedinthisaromaticsunit,

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简介：Theimpropercultivationofcommercialplantation,whichisamanagementactivitywiththepropertiesofeconomy,willleadtoenvironmentlossessuchaslanddegradation,soilerosion,pestsanddiseases.Environmentalcostiseasilyneglectedbyexecutives,however,itexistsactually.Thevariety,intersectingandoverlappingofenvironmentlossesdecidetheboundaryofevaluationandthenecessityofindicesonenvironmentalcost.Theresearchanalyzesthecharacteristicsanddisciplinariansofenvi...

简介：Airdistributionincommercialairlinercabinsisveryimportantforthecomfortandhealthofpassengersandcrew.Experimentalmeasurements,computationalfluiddynamics(CFD)simulations,andinversemodelingarestate-of-the-artmethodsavailableforstudyingtheairdistribution.Thispapergaveanoverviewofthediferentexperimentalmodels,suchasscalemodels,simplifiedmodels,full-scalemockups,andactualaircabins.Althoughexperimentalmeasurementswereexpensiveandtimeconsuming,thedatawereessentialforvalidatingCFDsimulations.DiferentmodelingstrategiesforCFDsimulationswerealsodiscussedinthispaper,includinglargeeddysimulationsandReynoldsaveragedNavier–Stokesequationmodeling.CFDsimulationsweremainstreamapproachesforstudyingtheairdistributionbuttheycouldnoteasilyleadtooptimaldesign.Inversemodelingofairdistributionhasrecentlyemergedintoaverypowerfulandattractivetoolfordesigningtheairdistributioninairlinercabins,althoughmostofthestudieswerepreliminary.

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简介：Calculatingandmeasuringcreditriskisthekeytechniqueofcommercialbankmanagement.InternationalrelativeachievementsmainlyincludeZandZETAmodelofAltman,Standard&poolexternalratingsystem,Moodyexternalratingsystem,KMVmodel,CreditMetricsmodel,CreditRiskmodel,McKinseymodelandsoon.Chineserelativeachievementsmainlyincludes:creditscoremethod,comprehensiveestimatingmethod,discriminativeanalysismethod,artificialneuralnetworkmethodetc.Thispaperanalyzestherelativeresearchachievementsofcreditriskmeasurementandthefutureresearchtrend.

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简介：ThePetroChina’smeetingonappraisalof'TMPtechnologyfortwo-zoneriserFCCformaximizationofpropyleneyieldwhilepayingattentiontolightdistillateproduction'washeld

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