简介：Astrainofyeast,whichcanendurehighosmoticpressure,isemployedforthesensitivematerialofthemicrobialBODsensor.Twoimmobilizationmethodsareused,I.e.CalciumalginategelbeadsandPVAgelbeads.TheresultsshowthatthePVAgelbeadsisbetter.TheinfluencesofosmosisandheavymetalionsontheyeastentrappedinthePVAgelbeadsarealsostudiedintheexperiment.

简介：微生物引起的分子的生态学技术，它被开发根据分子，在在构造快速的渗入(CRI)学习细菌被使用系统。这些技术在更好在CRI通过微生物引起的nucleic酸顺序碎片的分析描述在微生物引起的组结构和氮污染之间的细菌的差异，微生物引起的社区分发，和关系是很有效的。结果进一步揭示了污染的移动机制，它为在CRI的废水处理的改进是必要的。

简介：Thedynamicmicrocosmswereusedtoevaluatetheeffectofoilspillsonmicrobialecologicalsysteminmarinesedimentandtheenhancementofnutrientontheoilremoval.ThefunctionandstructureofmicrobialcommunitycausedbytheoilpollutionandphosphatedosageweresimultaneouslymonitoredbydehydrogenaseactivityassayandPCR-denaturinggradientgelelectrophoresis(DGGE)techniques.Theresultsindicatedthattheamountoftotalbacteriainalldynamicmicrocosmsdeclinedrapidlywithincubationtime.Thenumberofpetroleum-degradingbacteriaandtheactivityofsedimentdehydrogenaseweregraduallyenhancedbypetroleumintheoil-treatedmicrocosms,whiletheybothshowednoobviousresponsetophosphatedosage.Incomparison,phosphatespikedheterotrophicbacteriaandtheyshowedasignificantincreaseinamount.DGGEprofilesindicatedthatpetroleumdosagegreatlychangedcommunitystructure,andthebacteriabelongedtoclassDeltaproteobacteria,andphylaBacteroidetesandChlorobiwereenriched.Thisstudydemonstratedthatpetroleuminputgreatlyimpactedthemicrobialcommunitystructureandconsequentlythemarinesedimentpetroleum-degradingactivitywasenhanced.Phosphatedosagewouldmultiplyheterotrophicbacteriabutnotsignificantlyenhancethepetroleumdegradation.

简介：这篇论文在污水处理和絮凝率上处理了在微生物引起的凝聚剂(MBF)的效果之间的非并行，高絮凝率doesn“t平均数好处理有效性，并且揭示了遇到的问题什么时候独占的参数—絮凝率被用来在污水处理上评估MBF的效果。Theresults证明用不同的碳来源做的MBF在污水处理的有效性上有一些影响；絮凝率不能确实地反映污水处理的地位。什么时候独占的参数—絮凝率被用来在污水处理上评估MBF的效果，它将被夸大，特别在处理货到付款低的污水。作者认为当絮凝率被用来在污水处理上评估MBF的效果时，考虑货到付款移动率更好。

简介：<正>Salinityisanimportantfactorcontrollingthemicrobialdistributioninlakes.Howeverlittleisknownabouthowmicrobialcommunitiesevolveinresponsetosalinityvariation.Inthisstudy,weinvestigatedthemicrobial

简介：TheTaixinanBasinisoneofthemostpotentialgashydratebearingareasintheSouthChinaSeaandabundantgashydrateshavebeendiscoveredduringexpeditionin2013.Inthisstudy,geochemicalandmicrobialmethodsarecombinedlyusedtocharacterizethesedimentsfromashallowpistonCoreDH_CL_11(gashydratefree)andagashydrate-bearingdrillingCoreGMGS2-16inthisbasin.Geochemicalanalysesindicatethatanaerobicoxidationofmethane(AOM)whichisspeculatedtobelinkedtotheongoinggashydratedissociationistakingplaceinCoreDH_CL_11atdeep.ForCoreGMGS2-16,AOMrelatedtopastepisodesofmethaneseepagearesuggestedtodominateduringitsdiageneticprocess;whiletherelativelyenrichedδ18Obulk-sedimentvaluesindicatethatmethaneinvolvedinAOMmightbereleasedfromthe'episodicdissociation'ofgashydrate.MicrobialanalysesindicatethatthepredominantphylainthebacterialcommunitiesareFirmicutesandProteobacteria(GammaproteobacteriaandEpsilonproteobacteria),whilethedominanttaxainthearchaealcommunitiesareMarine_Benthic_Group_B(MBGB),Halobacteria,Thermoplasmata,Methanobacteria,Methanomicrobia,GroupC3andMCG.Underparallelexperimentaloperations,comparabledominantmembers(FirmicutesandMBGB)arefoundinthepistonCoreDH_CL_11andthenearsurfacelayerofthelongdrillingCoreGMGS2-16.Moreover,thesemembershavebeenfoundpredominantinotherknowngashydratebearingcores,andthedominantofMBGBhasevenbeenfoundsignificantlyrelatedtogashydrateoccurrence.Therefore,ahighpossibilityfortheexistingofgashydrateunderlyingCoreDH_CL_11isinferred,whichisconsistentwiththegeochemicalanalyses.Inall,combinedgeochemicalandmicrobiologicalanalysesaremoreinformativeincharacterizingsedimentsfromgashydrate-associatedareasintheSouthChinaSea.

简介：Cathodeactivityplaysanimportantroleintheimprovementofthemicrobialfuelcellsonoceanfloor(BMFCs).AcomparisonstudybetweenRayon-based(CF-R)andPAN-basedcarbonfiber(CF-P)cathodesisconductedinthepaper.Thetwocarbonfiberswereheattreatedtoimprovecellperformance(CF-R-H&CF-P-H),andwereusedtobuildanewBMFCsstructurewithafoamycarbonanode.Themaximumpowerdensitywas112.42mWm-forCF-R-H,followedby66.6mWm-2forCF-R,49.7mWm-2forCF-P-Hand21.6mWm-2forCF-Prespectively.ThehigherspecificareaanddeepgroovemakeCF-RhaveabetterpoweroutputthanwithCF-P.Meanwhile,heattreatmentofcarbonfibercanimprovecellpower,nearlytwo-foldhigherthanheattreatmentofplainfiber.Thisimprovementmaybeduetothequinonesgroupformationtoacceleratethereductionofoxygenandelectrontransferonthefibersurfaceinthethreephaseboundaryafterheattreatment.ComparedtoPAN-basedcarbonfiber,Rayon-basedcarbonfiberwouldbepreferentiallyselectedascathodeinnovelBMFCsdesignduetoitshighsurfacearea,lowcostandhigherpower.Thecomparisonresearchissignificantforcathodematerialselectionandcelldesign.

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