简介：Everydaywealluseroads.Wewalkonthem.Wewalkeitheralongthepavement(人行道)oracrosstheroad.Ifwearecareless,wecancauseaccidents.Accidentsoftenhappenwhenpeoplearecrossingtheroad.Hereissomeadvice.

简介：大家对闪电再熟悉不过了。可闪电是怎样形成的呢?当狂风大作、电闪雷鸣时，我们应该注意些什么呢?

简介：

简介：

简介：NevergiveoutidentifyingsuchasHomeAddress,SchoolName,orTelephoneberinapublicmessagesuchasatachatName,Num-roomoronbulletinboards.Neversendapersonapic-tureofyouwithoutfirstcheckingwithyourpar-

简介：

简介：Trafficruleisakeyfactoraffectingtrafficflowandsafety.Wedevelopourmodels,includingthecellularautomatatrafficflowmodelaswellasthelinearregressionone,aimingatcalculatingtrafficflowandevaluatingsafetyconditionswithvariedtrafficrules.Then,wethoroughlyinvestigatefourtypesofpathsinafreeway,namelytwostraightlanes,threestraightlanes,ramps,androundaboutsascasestudiesanddiscussthedifferenttrafficrulesascomparison.Theresultsdemonstratethat“Keep-Right-Except-To-Pass”ruleisnotaseffectiveasthefreeruleinpromotingtrafficflow;however,thisruleensuressafetyfordriversbetterthanthefreerule.Additionally,anewtrafficrule,whichsetsdifferentpostedspeedlimitsforadjacentlanes,isproposedtopromotebettertrafficflowwithsafetyrequirementssatisfied.Furthermore,weapplyeffectiverulesandalternatives,leftdrivingnormsaswellasintelligentsystemasextensionandobtainbetterresults.Finally,model’ssensitivityanalysisregardingtoprobabilityofdeceleratingandpostedspeedlimitsprovesthestabilityofourresults.

简介：

简介：Acupuncture,asacomplementarytherapy,hasbeenusedtomanagethecancerassociatedsymptomsofcancerpatients.Toidentifytheefficacyandsafetyofacupunctureinthemanagementofcancer,thisreviewcriticallyanalysestherelevantpublicationsincludingbothexperimentalandclinicalstudies.Themajorityofstudiessuggestthatacupunctureeffectivelyrelievessomecancerrelatedsymptomssuchascancerpain,andsomeadverseeffectscausedbythecancerconventionaltreatmentssuchasnausea,vomiting,neutropeniaandxerostomia.

简介：Chinaisacountryofhighseismicitywithmanyhydropowerresources.Recently,aseriesofhigharchdamshaveeitherbeencompletedorarebeingconstructedinseismicregions,ofwhichmostareconcretedams.Theevaluationofseismicsafetyoftenbecomesacriticalproblemindamdesign.Inthispaper,abriefintroductiontomajorprogressintheresearchonseismicaspectsoflargeconcretedams,conductedmainlyattheInstituteofWaterResourcesandHydropowerResearch(IWHR)duringthepast60years,ispresented.Thedamsite-specificgroundmotioninput,improvedresponseanalysis,dynamicmodeltestverification,fieldexperimentinvestigations,dynamicbehaviorofdamconcrete,andseismicmonitoringandobservationaredescribed.Methodstopreventcollapseofhighconcretedamsundermaximumcredibleearthquakesarediscussed.

简介：

简介：

简介：AbstractAlbumin solutions derived from human plasma have demonstrated clinical benefits as intravenous fluid therapy in clinical settings such as liver disease, sepsis, intensive care, and surgery. For all plasma-derived medicinal products, there is a potential risk from pathogens, including relevant blood-borne viruses, emerging viruses, and prion proteins. To minimize the risk of transmissible infections, the production of human albumin solutions includes rigorous donor selection and plasma testing, and effective pathogen removal and inactivation methods such as fractionation and pasteurization. Compliance with international pharmacopeial standards for purity and prekallikrein activator and aluminum content is crucial, as is post-marketing pharmacovigilance for the continuous monitoring of adverse events. This review focuses on the effectiveness of manufacturing methods in the production of plasma-derived albumin, to ensure the safety of hyperoncotic solutions for volume expansion. We evaluated evidence identified through online database (PubMed) searches and from unpublished sources, on the manufacturing and pathogen safety of plasma-derived albumin solutions. The results confirmed the already established and evolving pathogen reduction capacity of the reviewed manufacturing methods. Up-to-date post-marketing pharmacovigilance data and log10 reduction factors for known and emerging pathogens during albumin production are included. Towards the goal of ever-increasing clinical safety, potential areas of improvement, such as compliance rates for the completion of donor health questionnaires, are also discussed. Taken together, the current manufacturing and pathogen reduction steps result in albumin products of greater purity than previous-generation products, with a high margin of pathogen safety against known and emerging pathogens, such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

简介：Objective:Thereisnosaferwaytotransportachildthanaschoolbus.FatalcrashesinvolvingoccupantsareextremelyrareeventsintheUS.Inrecentyears,schoolbustransportationbegantodevelopinChina.WewanttobringadvancedexperienceonschoolbussafetyinWesterncountriessuchastheUStodevelopingcountries.Methods:WesearchedthepapersrelatedtoschoolbussafetyfromMedline,ChineseScientificJournalsDatabaseandtheWeboftheNationalHighwayTrafficSafetyAdministration(NHTSA).Results:Therewereonly9papersrelatedtoschoolbussafety,whichshowedthathigherlevelsofsafetystandardsonschoolbuses,schoolbus-relatedtransportationandenvironmentallawsandinjurypreventionweretheprimaryreasonsforthedesiredoutcome.Fewschoolbusisrelatedtodeathsandinjuriesinthedevelopedcountries.Conclusions:Thedevelopingcountriesshouldmakestrictenvironmentallawsandstandardsonschoolbussafetytopreventchildren'sinjuryanddeath.

简介：无

简介：AbstractParotidectomy is the mainstay treatment for tumors of the parotid gland. In an effort to improve clinical outcomes, several modern surgical techniques and perioperative interventions have been evaluated and refined. This review discusses current and actively debated perioperative interventions aimed at improving patient safety and the quality of parotidectomy. Relevant high-impact literature pertaining to preoperative diagnostic modalities, intraoperative surgical techniques, and postoperative care will be described.

简介：数字方法是现在，为失真和剩余的计算的一个有用工具从焊接过程作为结果强调。现代有限元素代码不仅允许变丑和压力的计算由于率的不同加热并且冷却由于焊接处理而且考虑微观结构的变化。作为对纯焊接模拟的扩展，焊接力学的域从焊接进程把力学和材料行为与对焊接部件的服务行为的评价相结合。在纸，焊接力学的地里的试验性、数字的工作的新结果被描述。通过例子从汽车，原子并且管道应用程序一个equilibrated处理和进程，性质和缺点的一个靠近的相互作用是必要的找到对焊接部件的一个先进fitness-forservice评价，这被表明。

简介：

简介：ObjectivesToevaluatethesafetyandefficacyoftransradialcoronaryprocedures(TRCP).MethodsThedataof83caseswhoacceptedtransradialcoronaryangiography(CAG)andtransradialpercutaneouscoronaryintervention(PCI)inourdepartmentweresummarized.Thesuccessrates,proximalcoronarycomplications,peripheralvascularcomplications,severevagalreflex,meanoperationtime(MOT),meanrecumbenttime(MRT),meanhospital-stayingtime(MHT)wereanalyzed.Thedatawerecomparedwiththatof420casesoftransfemoralcoronaryprocedures(TFCP)inthesameperiod.ResultsSuccessratesandproximalcoronarycomplicationsweresimilarinbothgroups.SeverevagalreflexeswerelessinTRCPgroupthaninTFCPgroup.MOTwaslongerinTRCPgroup.MRTandMHTwereshorterinTRCPgroup.12(14.5%)radialarteryspasm,3(3.6%)radialarteryobstruction,1suddenrespiratoryarrestcausedbyjugularhematomawereobservedinTRCPgroup.ConclusionsTheefficacyandsafetyofTRCParedefinite.TRCPismoreeconomical.ForthepurposeofproperlyevaluatetheperipheralvascularcomplicationsofTRCP,itisnecessarytopayspecialattentiontoradialarteryocclusion,radialarterystenosis,andjugularhematoma.

简介：