简介:Focusingonpioneers’valiancyandinnovationinfrontiers’depersonalizelife,thisthesisapplaudstheirdown-toearthspiritandlife-to-deathstruggleagainstitsdepressivedesperation,itshandicappedhardshipandmiserablemisfortunesinWillaCather’swritings--"AWagnerMatinee","TheBohemianGirl",OPioneers!andMyAntonia.Dullandmonotonousthoughpioneers’routineswere,thebarrenlandfirmlymagnetizedtheirescapingfeetandinstead,invokedtheircreativity,fearlessness,andself-sacrificetowardsit.Hardworkingyearafteryearandendeavorsarduously,theinfertilehomesteadshadgivenuptoprosperousandproductivehomelands,amiraclecreatedwithindustrioushandsofcourageousandinnovativepioneers.
简介:TheFomopeagraniticplutonisemplacedingnessicandamphiboliticbasement.Thesegneissicandamphiboliticbasementrocksarerepresentedinthepluton'sbodyassub-rounded,elongatedorstretchedxenoliths.Amphiboliticxenolithsdisplaytestimoniesoftwomaintectoniceventsnamely:(i)E1flatteningdeformationeventcharacterizedbyaNW-SEtoE-Wfoliationwithabestpoleat246/57andamineralstretchedlineationwithabestlineat293/47;and(ii)E2compressiveeventtypifiedby(1)N-StoNNE-SSWsteeplydippingfoliation;(2)S-typeflexion-foldindicatingasinistralshearmovement.Theseamphiboliterocksindicateamagneticsusceptibilitymagnitude(Km)rangefrom418μSIto90092μSIfor87%ofthestationsshowingaferromagneticbehavior.K-TcurvesrevealthepresenceofTi-poormagnetiteassusceptibilitymineralcarrier.MagneticfoliationandlineationsuggestthattheN-SstrikedirectionobservedintheBamendouamphiboliteis,aspointedoutelsewhereintheCentralAfricanFoldBelt,ofparamountimportanceinthetectonicevaluationoftheFomopeaarea,sinceithasmostlikelyactedasmajordeformationphaseinthesecondtectoniceventinthebelt.
简介:ByusingNCEP/NCARdailyreanalysisdataanddailyprecipitationdataof740stationsinChina,relationshipsbetweenthepositionvariationoftheWestPacificsubtropicalhigh(WPSH)andthediabaticheatingduringpersistentandintenserainsintheYangtze-HuaiheRiversbasinarestudied.TheresultsshowthatthepositionvariationofWPSHiscloselyassociatedwiththediabaticheating.Therearestrongapparentheatingsourcesandmoisturesinksinboththebasin(tothenorthofWPSH)andthenorthofBayofBengal(tothewestofWPSH)duringpersistentandintenserainevents.Inthebasin,Q1zbeginstoincrease3daysaheadofintenserainfall,maximizes2dayslaterandthenreducesgradually,butitchangeslittleafterprecipitationends,thuspreventingtheWPSHfrommovingnorthward.InthenorthofBayofBengal,2daysaheadofstrongrainfalloverthebasin,Q1zstartstoincreaseandpeaks1dayaftertherainoccurs,leadingtothewestwardextensionofWPSH.Afterwards,Q1zbeginsdecliningandtheWPSHmakesitseastwardretreataccordingly.Basedonthecompleteverticalvorticityequation,inmid-troposphere,theverticalvariationofheatinginthebasinisfavorabletotheincreaseofcyclonicvorticitynorthofWPSH,whichcounteractsthenorthwardmovementofWPSHandfavorsthepersistenceofrainbandsoverthebasin.TheverticalvariationofheatinginthenorthofBayofBengalisinfavoroftheincreaseofanti-cyclonicvorticitytothewestofWPSH,whichinducesthewestwardextensionofWPSH.