Chemometrics and Intelligent Laboratory Systems Progress in Organic Coatings.docx
- 文档编号:8389017
- 上传时间:2023-01-31
- 格式:DOCX
- 页数:24
- 大小:30.35KB
Chemometrics and Intelligent Laboratory Systems Progress in Organic Coatings.docx
《Chemometrics and Intelligent Laboratory Systems Progress in Organic Coatings.docx》由会员分享,可在线阅读,更多相关《Chemometrics and Intelligent Laboratory Systems Progress in Organic Coatings.docx(24页珍藏版)》请在冰豆网上搜索。
ChemometricsandIntelligentLaboratorySystemsProgressinOrganicCoatings
Thehighperformancemicrostripsilicondetectortrackingsystemforaninnovativecrystalbasedcollimationexperiment OriginalResearchArticle
NuclearInstrumentsandMethodsinPhysicsResearchSectionA:
Accelerators,Spectrometers,DetectorsandAssociatedEquipment,Volume617,Issues1-3,11May2010-21May2010,Pages439-443
D.Bolognini,A.Berra,S.Grigioni,S.Hasan,A.Mattera,M.Prest,I.Rashevskaya,E.Vallazza,M.Veronelli
Showpreview | Relatedarticles | Relatedreferenceworkarticles
Purchase
$35.95
269
VolcanogenicoriginofcenotesnearMtGambier,southeasternAustralia OriginalResearchArticle
Geomorphology,Volume119,Issues1-2,15June2010,Pages23-35
JohnA.Webb,KenG.Grimes,IanD.Lewis
Closepreview | Relatedarticles | Relatedreferenceworkarticles
AbstractAbstract|Figures/TablesFigures/Tables|ReferencesReferences
Abstract
ThecenotesnearMtGambierarecircular,cliffed,collapsedolinescontainingwater-tablelakesupto125 mdeep,flooredbylargerubblecones.Theylieinaflat,coastalplaincomposedofmid-Tertiarylimestone.Mostofthedeepestcenotesareconcentratedintwosmallareaslocatedalongtrendssub-paralleltothemainjointdirectioninthelimestone.Thecenotesdonotconnecttounderwaterphreaticpassages,andwaterchemistrydataconfirmthattheyarenotpartofaninterconnectedkarstnetwork.Theyformedbycollapseintolargechambers(upto> 1millionm3)thatextended125 mormorebelowthelandsurface.Severalcenoteshaveactivelygrowingstromatolitesonthesub-verticalwallsthatstartedgrowingat
8000 yearsBP.
ThecavesthatcollapsedtoformthedeepMtGambiercenotesaremuchlargerthanshallowanddeepphreaticcavesinthearea,anddonotconnectintodeepphreaticsystems.Theywerenotformedbyfreshwater/seawatermixing,responsibleformanyofthewell-knownYucatancenotes,becausetheyarenotassociatedwithlocationsofthemixingzoneduringprevioushighsealevels,andaremuchlargerthancavespresentlyformingalongthemixingzonenearMtGambier.InsteaddissolutionwasmostlikelyduetoaprocesswherebyacidifiedgroundwatercontaininglargeamountsofvolcanogenicCO2ascendedupfracturesfromthemagmachambersthatfedthePleistocene–Holocenevolcaniceruptionsinthearea;deepreservoirsofvolcanogenicCO2occurnearby.
CavedissolutioncouldhavebeenduetoreleaseofCO2duringtheMtGambiereruption
28,000 yearsago,followedbycollapsetoformcenotesduringthelowsealevelsoftheLastGlacialMaximum
20,000 yearsago.Thecenotesthenflooded
8000 yearsagoassealevelrose,andstromatolitesbegantogrowonthewalls.
ArticleOutline
1.Introduction
2.Geomorphologicalsetting
3.Geologicalsetting
4.Climate
5.Hydrogeology
6.Karstfeatures
6.1.Cenotes
6.2.Phreaticcaves
6.3.Springs
7.Cenoteorigin
7.1.Collapseintocavitiesdissolvedinevaporitebeds
7.2.Progressivecollapseduetodissolutionbyunder-saturatedbasalwaters
7.3.Collapseintocavitiesformedbyphreaticprocesses
7.4.Collapseintocavitiesformedbyfreshwater/seawatermixing
7.5.CollapseintocavitiesdissolvedbyvolcanogenicCO2
8.Timingofdeep,volcanogeniccenoteformation
9.Conclusions
Acknowledgements
References
Purchase
$31.50
270
Soilmanagementinrelationtosustainableagricultureandecosystemservices OriginalResearchArticle
FoodPolicy,Volume36,Supplement1,January2011,PagesS72-S87
D.S.Powlson,P.J.Gregory,W.R.Whalley,J.N.Quinton,D.W.Hopkins,A.P.Whitmore,P.R.Hirsch,K.W.T.Goulding
Closepreview | Relatedarticles | Relatedreferenceworkarticles
AbstractAbstract|Figures/TablesFigures/Tables|ReferencesReferences
Abstract
Requirementsforresearch,practicesandpoliciesaffectingsoilmanagementinrelationtoglobalfoodsecurityarereviewed.Managingsoilorganiccarbon(C)iscentralbecausesoilorganicmatterinfluencesnumeroussoilpropertiesrelevanttoecosystemfunctioningandcropgrowth.EvensmallchangesintotalCcontentcanhavedisproportionatelylargeimpactsonkeysoilphysicalproperties.PracticestoencouragemaintenanceofsoilCareimportantforensuringsustainabilityofallsoilfunctions.SoilisamajorstoreofCwithinthebiosphere–increasesordecreasesinthislargestockcaneithermitigateorworsenclimatechange.Deforestation,conversionofgrasslandstoarablecroppinganddrainageofwetlandsallcauseemissionofC;policiesandinternationalactiontominimisethesechangesareurgentlyrequired.SequestrationofCinsoilcancontributetoclimatechangemitigationbuttherealimpactofdifferentoptionsisoftenmisunderstood.SomechangesinmanagementthatarebeneficialforsoilC,increaseemissionsofnitrousoxide(apowerfulgreenhousegas)thuscancellingthebenefit.Researchonsoilphysicalprocessesandtheirinteractionswithrootscanleadtoimprovedandnovelpracticestoimprovecropaccesstowaterandnutrients.Increasedunderstandingofrootfunctionhasimplicationsforselectionandbreedingofcropstomaximisecaptureofwaterandnutrients.Rootsarealsoameansofdeliveringnaturalplant-producedchemicalsintosoilwithpotentiallybeneficialimpacts.Theseincludebiocontrolofsoil-bornepestsanddiseasesandinhibitionofthenitrificationprocessinsoil(conversionofammoniumtonitrate)withpossiblebenefitsforimprovednitrogenuseefficiencyanddecreasednitrousoxideemission.Theapplicationofmolecularmethodstostudiesofsoilorganisms,andtheirinteractionswithroots,isprovidingnewunderstandingofsoilecologyandthebasisfornovelpracticalapplications.Policymakersandthoseconcernedwithdevelopmentofmanagementapproachesneedtokeepawatchingbriefonemergingpossibilitiesfromthisfast-movingareaofscience.Nutrientmanagementisakeychallengeforglobalfoodproduction:
thereisanurgentneedtoincreasenutrientavailabilitytocropsgrownbysmallholderfarmersindevelopingcountries.Manychangesinpracticesincludinginter-cropping,inclusionofnitrogen-fixingcrops,agroforestryandimprovedrecyclinghavebeenclearlydemonstratedtobebeneficial:
facilitatingpoliciesandpracticalstrategiesareneededtomakethesewidelyavailable,takingaccountoflocaleconomicandsocialconditions.Inthelongertermfertilizerswillbeessentialforfoodsecurity:
policiesandactionsareneededtomaketheseavailableandaffordabletosmallfarmers.Indevelopedregions,andthosedevelopingrapidlysuchasChina,strategiesandpoliciestomanagemorepreciselythenecessarilylargeflowsofnutrientsinwaysthatminimiseenvironmentaldamageareessential.Aspecificissueistominimiseemissionsofnitrousoxidewhilstensuringsufficientnitrogenisavailableforadequatefoodproduction.Applicationofknownstrategies(througheitherregulationoreducation),technologicaldevelopments,andcontinuedresearchtoimproveunderstandingofbasicprocesseswillallplayapart.Decreasingsoilerosionisessential,bothtomaintainthesoilresourceandtominimisedownstreamdamagesuchassedimentationofriverswithadverseimpactsonfisheries.Practicalstrategiesarewellknownbutoftenhavefinancialimplicationsforfarmers.Examplesofsystemsforpayingonegroupoflandusersforecosystemservicesaffectingothersexistinseveralpartsoftheworldandserveasamodel.
ArticleOutline
Introduction
Managingorganiccarboninsoil
Soilcarbon–quantity,structureandsoilfunctions
Soilcarbonandtheglobalcarboncycle
Emergingtopicsforresearchoraction
Optimisingsoilphysicalconditionsforcropgrowthinarangeofenvironments
Wateravailabilitytocropsandthephenomenonof“strongsoils”
Organicmatterandsoilphysicalproperties
Managingnutrientsindiverseenvironmentsandcroppingsystems
Situationsofnutrientshortage
Situationswithadequateorexcessnutrients
Understandingandoptimisingsoilbiologicalprocesses
Soilbiologicalprocessesandpopulations
Diversity-functionrelationships
Opportunitiesfromnewmethodologies
Root–soilinteractions
Releaseofcarboncompounds
Structureformation
Nutrientsintherhizosphere
Managementoftherhizosphere
Minimisingsoilerosionfromagriculturalland
Possiblebeneficialimpactsofbiocharonsoilpropertiesandcropgrowth
Developingpracticesandpolicies
References
Purchase
$31.50
Researchhighlights
►Wereviewsoilissuesrelevanttoglobalfoodsecurityandecosystemfunctioning.►Wesuggestactionsforeachissueincludingpolicies,communicationorresearch.►Organicmattercontentisessentialforimprovingmanysoilphysicalproperties.►Policiestomakefertilizersaffordableindevelopingcountriesareessential.►Practicestocutgreenhousegasemissionsfromintensifiedagricultureareneeded.
271
Under-representationofwomenandethnicminoritiesinvascularsurgeryrandomizedcontrolledtrials OriginalResearchArticle
JournalofVascularSurgery,Volume50,Issue2,August2009,Pages349-354
AndrewW.Hoel,AhmedKayssi,SomaBrahmanandam,MichaelBelkin,MichaelS.Conte,LouisL.Nguyen
Closepreview | Supplementarycontent
| Relatedarticles | Relatedreferenceworkarticles
AbstractAbstract|Figures/TablesFigures/Tables|ReferencesReferences
Objectives
Genderandethnicityarefactorsaffectingtheincidenceandseverityofvasculardiseaseaswellassubsequenttreatmentoutcomes.Althoughwellstudiedinotherfields,balancedenrollmentofpatientswithrelevantdemographicchar
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- Chemometrics and Intelligent Laboratory Systems Progress in Organic Coatings
链接地址:https://www.bdocx.com/doc/8389017.html