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  • 简介:Smartgrowthpoliciesadvocateforeconomicallyviable,environmentallyconscientious,andsociallyequitablesolutionsforurbandevelopment.Thesepoliciesweredevelopedlargelyinresponsetoissuesrootedintheautomobile-orientedculture:airpollution,highgreenhousegasemissions,trafficcongestion,andsedentarylifestyles.Inurbansettings,agoodtransportationalternativeiscycling,sinceitisabletoservethetravelneedsofnearlyhalfofcitydwellers’dailytrips.ManyEuropeanandCanadiancitieshavesuccessfullyincreasedcyclingratesbycreatingsaferbicycleenvironmentsandrestrictingordiscouragingautomobileuse.ToevaluatethepotentialeffectsoftheabovemeasuresonAmericanurbanareas,thispaperexaminescasestudiesofcycletracksandbicycleboulevardsimplementedinAmericancities,andhowthesefacilityimprovementshavechangedhowsafecyclistsfeelontheroadandoverallbicycleusage.Resultsshowthetwomethodsareindeedeffectiveinincreasingbicycleusagerates.Ultimately,increasingcyclingratesneedspoliciestodiscouragepeoplefromdriving,thegreatestmodeshareinnearlyallurbanareas.Parkingpolicyhasmajorimpactsonpeople’sdecisiontousetheautomobile.Currently,parkingisoversuppliedandunderpricedinmanycities,makingitirresistibleforpeopletodrive.Decreasingthenumberofparkingspacesavailableandincreasingtheirpricewillincreasepressureondriverstodriveless,especiallyforshorttrips,andtobikeinstead.Itisimportantforplannersandpolicymakerstorealizethatsolutionsfrombothdirections,makingbikingmoreenjoyableandmakingparking,andhencedriving,lessaffordable,shouldbeusedintandem.Thecomplementarynatureofthetwoapproachesmakesitsotheeffectofthecombinationisgreaterthanthesumofthetwo.

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  • 简介:欧洲结构的正直评价过程(SINTAP)在焊接脚趾与一个假定嵌入的缺陷和表面缺陷被用于对API5LX65管道钢的焊接关节的评价。在缺省水平(水平()),评价点被从Charpy精力测试数据保存地估计破裂坚韧价值K_lc建立。同时,分析水平(基本水平)1基于破裂坚韧CTOD被使用。然后,二个评价层次被比较。所有评价点位于分析的失败线以内的评价结果表演铺平0并且t。管道的焊接关节因此是安全的。评价基于Charpy吸收了精力,这能被结束当另外的破裂坚韧数据不是可得到的时,是适用的,或不能容易被获得。结果是保守的。

  • 标签: 安全评估 摆锤冲击能 失效评估图 能量吸收 SINTAP 管线钢
  • 简介:Ahybridmethodologyisproposedforuseinlowpower,safetycriticalwirelesssensornetworkapplications,wherequality-of-serviceorientatedtransceiveroutputpowercontrolisrequiredtooperateinparallelwithradiofrequency-basedlocalization.Thepracticalimplementationisframedinanexperimentalproceduredesignedtotrackamovingagentinarealisticindoorenvironment.Anadaptivetimesynchronizedapproachisemployedtoensurethepositioningtechniquecanoperateeffectivelyinthepres...

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  • 简介:TheNineplateaulakesarethoselakeswhoseareasarelargerthan30km2inYunnanprovince.TheselakesareDianchiLake,ErhaiLake,FuxianLake,ChenghaiLake,LuguLake,QiluLake,XingyunLake,YangzonghaiLake,andYilongLake.Thenineplateaulakesareimportantforeconomicdevelopmentandforecologicalsecurity.However,alllakesarefacingdifferentenvironmentalissuessuchaseutrophicationandwaterqualitydegradation.Differentstrategiesshouldbeproposedaccordingtothevariousconditionsofthelakes.Threetypesofprevention,controlandtreatmentstrategieswereproposedbasedonthesuccessionprocess,theecologystages,theeconomicandsocialdevelopment,theeutrophicationstages,thewaterqualities,andthedominantecologicalfunctions.

  • 标签: SUCCESSION TYPES of PREVENTION REGULATION of
  • 简介:西北中国包括XinjiangUgyur自治区域,Qinghai省,Gansu省,NingxiaHui自治区域和Shaanxi省,盖住308x10~4km~2。它位于温暖适度的地区,气候干旱或半干旱。降水是很少见的,但是蒸发极其高。气候是干燥的,水资源是缺乏的,theeco环境是易碎的,并且水资源的分发是不平的,降水是唯一的输入,并且蒸发是内陆河,和猛冲里的唯一的输出,在这个区域,与对方一起的表水和地下水变化为多次,它有益于水资源的存储和利用。在这个区域的平均降水是232公里,全部的降水数量是7003x10~8m~3/a,表水资源是1891x10~8m~3/a,全部的自然地下水资源是1150x10~8m~3/a,全部的有效水分资源是438x10~8m~3/a,和全部的水资源是8m~3/a和人均的水资源是的1996x10~2278m~3/a。整个区域的水资源是5.94x10~4m~3/(a.km~2),仅仅是在中国的五分之一个平均值。现在,有效水分资源是876x10~8m~3/a,地下水在之中是贴近的130x10~8m~3/a。

  • 标签: 中国 西北地区 水资源利用 生态环境安全
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  • 简介:Theinvitroandinvivoeffectsofcornpeptides(CPs)preparedfromcornglutenmealbyproteolysiswithanalkalineproteaseandfractionsofCPsfromSephadexG-15andG-10columnsonactivitiesofalcoholdehydroge-nase(ADH)werestudied.TheresultsshowthatCPsandfraction3ofCPsfromSephadexG-10columnenhanceinvitroADHactivity.Furthermore,theinvitroacceleratingeffectofthefraction3ofCPsonADHactivitywassuperiortothatofglutathione,whichwasalsofoundeveninthepresenceofADHinhibitor,suchaspyrazole.Intheinvivoexperiments,theanimalswerefedwithdifferentdosagesofCPsandwithadoseofChinesedistilledspiritorally,andsacrificedforthemeasurementofADHactivity.InvivoexperimentalresultsindicatethatCPSenhancedhepaticADHactivities.TotestthesafetyofCPsashealthfood,30dfeedingtestwasperformed.NoobvioustoxiceffectsweredetectedintreatedWistarrats.

  • 标签: 安全性评估 醇脱氢酶 体内实验 玉米肽 体外 乙醇
  • 简介:InChina,PinuspumilaismainlydistributedinDaxing’anling,whilethosegrowingintheeasternDaxing’anlingareprimarilycoveredunderthejurisdictionofHuzhongForestBureau.P.pumilaisanevergreenshrub,3-6mhigh,andalwaysgrowsvigorously.Itstrunkscreepalongtheground,usually10mlongormore.Itiseasilyflammablebecauseofthelargeamountsofresinsandvolatileoilsinitsbody.Attackingforestfiresisadangerouswork,especiallyinP.pumilascrubs.ThefiresinP.pumilas...

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  • 简介:AbstractPurpose:Various organizations and institutions are involved in road traffic injury (RTI) and crash registration such as police, forensic medicine organization, hospitals and emergency medical services. But there is a substantial uncertainty in interpreting the data, duplicated data collection and missing data in relation to RTI in most systems. This study aims to identify data sources for RTI surveillance in Iran and to explore traffic safety data source domains, data elements and detailed information by each data source.Methods:This is a qualitative study which was conducted in 2017 in Iran. Data were collected employing semi-structured interviews with informants in road safety organizations in relation to traffic safety including Police, Ministry of Health and Medical Education as well as Forensic Medicine Organization and other authorities-in-charge. For completing the preliminary extraction information, the minimum data set was used and compared in each system.Results:Eight different organizations relevant to road traffic safety were identified. The main domain of data provided by each one consists of Emergency Medical System form, Police KAM114 form, Ministry of Transport and Road Administration, Red Crescent Organization/Disaster Management Information System, Ministry of Health and Medical Education, Forensic Medicine Organization, Insurance Company and Ministry of Justice. Each system has its own database, based upon its scope and mainly at crash and post-crash status and little on pre-crash circumstance.Conclusion:All current registry systems are not surveillance systems for RTI prevention. Huge data have been collected in various registry systems in Iran, but most of the collected variables are duplicated in each system. On the other hand, some variables like alcohol and substance abuse, child seat belt, helmet use in relation to RTI prevention are missed in all systems. Accordingly, it is a critical need to integrate and establish a comprehensive surveillance system, with focus on the goal of each system and collection of minimum data in each organization, which currently is underway.

  • 标签: Accidents traffic Integrated surveillance system Prevention and control
  • 简介:AbstractImportance:Octreotide is an off-label medicine for congenital hyperinsulinism (CHI), but is currently widely used for treatment of patients with CHI. Thus far, variable efficacy and adverse effects have been reported for octreotide.Objective:The present study evaluated the efficacy and safety of a subcutaneous octreotide injection for treatment of diazoxide-unresponsive CHI in China.Methods:This study was a retrospective review of children with diazoxide-unresponsive CHI who were treated with a subcutaneous octreotide injection. The efficacy and side effects of the treatment were assessed.Results:Twenty-five Chinese children (15 boys) were involved in the study. Their median age at diagnosis was 8 weeks (range, 1-24 weeks) and median age at the final follow-up was 1.8 years (range, 0.3-3.3 years). Octreotide therapy effectively increased blood glucose levels in all patients. The intravenous glucose infusion rate was reduced in all patients. Twenty-one patients gradually discontinued the intravenous glucose infusion while receiving octreotide combined with frequent carbohydrate/glucose-rich feeding. Among patients with a monoallelic ATP-sensitive potassium (KATP) channel mutation, 50.0% showed gradual remission during follow up, indicating that the octreotide treatment may be a feasible alternative to surgery, especially for patients with monoallelic KATP-channel mutations. Transient elevation of liver enzymes occurred in 20.0% of patients, while asymptomatic gallbladder pathology occurred in one patient. The growth rates of these patients were normal (height standard deviation score was 0.3 ± 1.5 at the final follow-up).Interpretation:Octreotide was a well-tolerated, effective therapy for most children with diazoxide-unresponsive CHI.

  • 标签: Octreotide Congenital hyperinsulinism Efficacy Safety
  • 简介:AIM:Toestablishtheefficacyandsafetyofbimatoprost0.03%monotherapyinglaucomaandocularhypertension(OHT)patientswithinadequateintraocularpressure(IOP)oncurrenttherapy.METHODS:Pre-andpost-switchIOPswereanalyzedfor59consecutivepatientswhowereswitchedfromcurrenttherapytobimatoprostmonotherapybetween2011-2015.Demographicinformation,diagnosis,andanyadverseeventswererecorded.ChangeinIOPpost-preswitchwasanalyzedusinga2-sidedStudent'spairedt-testatthe5%significancelevel.RESULTS:TherewasastatisticallysignificantmeanreductioninIOPatthefirstfollowupvisit,whichwasmaintainedatsubsequentfollowupvisitsforpatientsregardlessofdiagnosis,orpre-switchtreatment(P<0.001).SubgroupanalysisalsodemonstratedastatisticallysignificantmeanreductioninIOPwhenlookingatOHTpatientsonly,aswellaspatientswithanydiagnosisswitchedfromlatanoprostmonotherapytobimatoprostmonotherapy(P<0.001).CONCLUSION:Thisisthelargestindependentdatasetwhichsupportsswitchingglaucomapatientswithpoorresponsetocurrenttreatmentontobimatoprostmonotherapybeforeconsideringotheradjuvantmedicalormoreinvasivetherapy.

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  • 简介:摘要The present global pandemic of COVID-19 has brought the whole world to a standstill, causing morbidity, death, and changes in personal roles. The more common causes of morbidity and death in these patients include pneumonia and respiratory failure, which cause the patients to require artificial ventilation and other techniques that can improve respiratory function. One of these techniques is chest physiotherapy, and this has been shown to improve gas exchange, reverse pathological progression, and reduce or avoid the need for artificial ventilation when it is provided very early in other respiratory conditions. For patients with COVID-19, there is limited evidence on its effect, especially in the acute stage and in patients on ventilators. In contrast, in patients after discharge, chest physiotherapy in the form of respiratory muscle training, cough exercise, diaphragmatic training, stretching exercise, and home exercise have resulted in improved FEV1 (L), FVC (L), FEV1/FVC%, diffusing lung capacity for carbon monoxide (DLCO%), endurance, and quality of life, and a reduction in anxiety and depression symptoms. However, there are still controversies on whether chest physiotherapy can disperse aerosols and accelerate the rate of spread of the infection, especially since COVID-19 is highly contagious. While some authors believe it is possible, others believe the aerosol generated by chest physiotherapy is not within respirable range. Therefore, measures such as the use of surgical masks, tele-rehabilitation, and self-management tools can be used to limit cross-infection.

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  • 简介:马青暂停桥的动态回答和在狂暴的风行动下面的桥上的火车的跑的行为被一个三维的wind-train-bridge相互作用模型分析。这个模型由一个空间有限元素桥模型,组成一个火车模型八4轴创作了27degrees-of-freedom的相同教练,和狂暴的风当模特儿。包括buffeting力量和自我刺激的力量,波动的风力量仅仅对桥起作用,自从火车在桥甲板内跑。桥的动态回答被计算,一些结果与从台风约克测量的数据相比。以不同速度通过马青暂停桥的火车的runnability与不同的风速度在狂暴的风下面被研究。然后,为在桥甲板保证火车的跑的安全的风速度的阀值曲线被建议,从哪个在不同的风速度的许可的火车速度能被决定。当吝啬的风速度到达30m/s,数字结果证明马青暂停桥上的栏杆交通应该被关上。关键词马青桥牌-狂暴的风-动态相互作用-运用安全-阀值-旁边支持的风速度:不到资助号码90715008的中国的国家自然科学基础,50838006;为在资助号码2009JBM078下面的中央大学的基本研究资金

  • 标签: 湍流模型 安全运行 火车模型 大桥 相互作用模型 列车运行
  • 简介:The5MWlowtemperaturenuclearheatingreactor(NHR-5)isanewandadvancedtypeofnuclearreactordevelopedbyInstituteofNuclearEnergyTechnology(INET)ofTisinghuanUniversityofCHinain1989,Itsmainloopisathermal-hydraulicsystemwithnaturalcirculation.ThispaperstudiesthesafetyofNHRundertheconditionofloss-of-coolantaccidents(LOCAs)bymeansofsimulantexperiments.First,theBackgroundandnecessityoftheexperimentsarepresented.thentheexperimentalsystem,includingthethermal-hydraulicsystemandthedatacollectionsystem,andsimilaritycriteriaareintroduced.Uptonow,thedischargeexperimentswiththeresidualheatingpower(20%ratedheatingpower)havebeencarriedoutontheexperimentalsystem,Thesystemprametersincludingcirculationflowrate,systempressure,systemtemperature,voidfraction,dischargemassandsoonhavebeenrecordedandanalyzed.Basedontheresultsoftheexperiments,theconclusionasareshownasfollos:onthewhole,thereactorissafeundertheconditionofLOCAs,butthethermalvacillationsresultingfromthevibrationofthecirculationflowratearedisadvantageoustotheinternalpartsofthereactorcore.

  • 标签: 核反应堆 安全性 冷却剂 事故
  • 简介:摘要 :本文主要以西气东输西二线站场 为例 ,介绍了 Honey well公司的 Safety Manager控制系统在实际中的应用 ,天然气属于易燃、易爆物品,而且运输管中压力大,为了保障站场管道和压缩机的平稳运行,西二线站场 ESD 系统采用的是 Honeywell 公司的 Safety Manager(SM) 安全控制系统。该文简介地说明了一下该 控制系统的结构、特点和日常维护。

  • 标签: 紧急停车控制系统 西气东输西二线 Safety Manager
  • 简介:摘要 :本文主要以某煤制烯烃项目气化装置为例 ,介绍了 Honey well公司的 Safety Manager控制系统在实际中的应用 ,并详细说明次控制系统的结构、特点和日常维护 ,验证了此系统的安全、稳定等特点。

  • 标签: 紧急停车控制系统 煤化工 Safety Manager