简介:摘要目的探究LED红蓝光治疗痤疮的疗效,以便为临床提供指导。方法选取2014年5月后我院收治的痤疮患者120例,按照入院的先后顺序分成两组,每组60例,对照组采用常规药物治疗,观察组采用LED红蓝光治疗,观察两组的治疗效果。结果观察组治愈15例,显效20例,有效16例,无效9例,;对照组治愈10例,显效10例,有效23例,无效17例,观察组总有效率为85.0%,对照组为71.67%,观察组的治疗总有效率明显高于对照组;治疗1周、2周、4周后,患者各种类型皮损情况(粉刺、脓包、丘疹、结节、囊肿)较治疗前明显改善,差异均具有统计学意义,P<0.05。结论对痤疮患者进行LED红蓝光治疗效果明显,能够有效改善患者的皮损情况,提高治疗总有效率,值得在临床上推广。
简介:摘要随着现代照明技术的不断发展,LED由于具有效率高、节能好、可调光等优势,逐渐成为照明市场的主要产品。然而,大功率LED在工作过程中会产生大量的热量,为了有效地散发热量,必须使用高效率的LED散热鳍片。由此,设计了一种高效率的LED散热鳍片,该鳍片具有结构简单、高效节能,环保可靠的特点。
简介:Duetoitsmajorroleinmaintainingthewater-retainingpropertiesoftheepidermis,ceramideisofgreatcommercialpotentialincosmeticsandpharmaceuticalssuchashairandskincareproducts.However,currentsyntheticapproachesforceramidearetediousandtime-consumingforindustrialapplications.Therefore,itisdesirabletofindanalternativecost-efficientandhighly-yieldmethodforobtainingthevaluableproducts.Inpresentstudy,thepotentialofproducingceramidethroughenzymatichydrolysisofsphingomyelinwithenzymeirradiatedby808nmlighthasbeenstudied.Withenzymeirradiatedby808nmlight,itsactivitycanbeenhancedandreactionspeedcanbeincreasedsignificantly.
简介:AIMtotestthefeasibilityandperformanceofanoveluppergastrointestinal(GI)capsuleendoscopeusinganurse-ledprotocol.METHODSWeconductedaprospectivecohortanalysisofpatientswhodeclinedgastroscopy(oesophagogastroduodenoscopy,OGD)butwhoconsentedtoupperGIcapsuleendoscopy.PatientsswallowedtheupperGIcapsulefollowingingestionof1literofwater(containingsimethicone).AseriesofpositionalchangeswereusedtoexploittheeffectsofwaterflowandmovetheupperGIcapsulefromonegravity-dependentareatoanotherusinganurse-ledprotocol.Capsuletransittime,videoreadingtime,mucosalvisualisation,pathologydetectionandpatienttolerancewasevaluated.RESULTSFiftypatientswereincludedinthestudy.Themeancapsuletransittimesintheoesophagusandstomachwere28sand68minrespectively.Visualisationofthefollowingmajoranatomicallandmarkswasachieved(graded1-5:Poortoexcellent):Oesophagus,4.8(±0.5);gastro-oesophagealjunction(GOJ),4.8(±0.8);cardia,4.8(±0.8);fundus,3.8(±1.2);body,4.5(±1);antrum,4.5(±1);pylorus,4.7(±0.8);duodenalbulb,4.7(±0.7);secondpartoftheduodenum(D2),4.7(±1).TheupperGIcapsulereachedD2in64%ofpatients.Themeanvideoreadingtimewas48minwithstandardplaybackmodeand20minusingQuickview(p=0.0001).NopathologywasmissedusingQuickview.Proceduraltolerancewasexcellent.NocomplicationswereseenwiththeupperGIcapsule.CONCLUSIONTheupperGIcapsuleachievedexcellentviewsoftheupperGItract.FuturestudiesshouldcomparethediagnosticaccuracybetweenupperGIcapsuleandOGD.
简介:摘要LED照明系统在使用过程中,内部的LED芯片基板会产生大量的热量,若不能及时散发热量,则会加速LED照明系统内电气元件的老化,导致减少照明系统的使用时间。基于此,设计了一种应用于LED照明系统的热能收集装置,该装置结构简单、使用方便,不仅可以降低LED芯片基板在运行时的温度,还能减小能源的浪费,提高对能源的利用效率。