简介：关于常规石块的普遍使用的有害效果增强担心一般来说在海洋的领域里并且在内燃机造成，导致了努力并且向研究指导大大写的投资的广阔数量，持续其他的精力的开发采购原料。最答应之一并且这些来源丰富是氢。第一，当前的石块燃料的使用被讨论集中于排出物和经济方面作为一种合适的可能的选择与氢的特别参考为新、更干净、可更新的燃料强调需要。氢性质，生产和存储方法然后从节俭的观点与它的适用性一起被考察。最后，为在内燃机的氢的使用的费用分析被执行为柴油机作为代替说明它的使用的好处。这的结果花费了98%大写的开销被设备消费的分析表演，并且设备的68.3%全部的费用在太阳的光电的房间上被花。因为它是大约10亿的高起始的费用，氢植物作为一个大投资工程被分类US$；但是因为氢以一个完全绿的方法被生产，这被认为正当。当氢被用作燃料时，没有有害排出物被获得。

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简介：Satelliteremotesensingofinlandwaterbodyrequiresahighspatialresolutionandamultibandnarrowspectralresolution,whichmakesthefusionbetweenpanchromatic(PAN)andmulti-spectral(MS)imagesparticularlyimportant.TakingtheDaquekousectionoftheQiantangRiverasanobservationtarget,fourconventionalfusionmethodswidelyacceptedinsatelliteimageprocessing,includingpansharpening(PS),principalcomponentanalysis(PCA),Gram-Schmidt(GS),andwaveletfusion(WF),areutilizedtofuseMSandPANimagesofGF-1.TheresultsofsubjectiveandobjectiveevaluationmethodsapplicationindicatethatGSperformsthebest,followedbythePCA,theWFandthePSintheorderofdescending.Theexistenceofalargeareaofthewaterbodyisadominantfactorimpactingthefusionperformance.Meanwhile,theabilityofretainingspatialandspectralinformationsisanimportantfactoraffectingthefusionperformanceofdifferentfusionmethods.ThefundamentaldifferenceofreflectivityinformationacquisitionbetweenwaterandlandisthereasonforthefailureofconventionalfusionmethodsforlandobservationsuchasthePStobeusedinthepresenceofthelargewaterbody.Itissuggestedthattheadoptionoftheconventionalfusionmethodsintheobservingwaterbodyasthemaintargetshouldbetakenwithcaution.Theperformancesofthefusionmethodsneedre-assessmentwhenthelarge-scalewaterbodyispresentintheremotesensingimageorwhentheresearchaimsforthewaterbodyobservation.