简介:Withthesixrareearthgroups'productionrestrictionandthecrackdownonillegalproductionandsmuggling,rareearthmarketfluctuatedslightlyduringthefourthquarterof2015.PriceofsomerareearthproductslikePr,NdandDykeptonincreasingwhilepriceofLa,Ce,EuandYtslippedconstantly.Mostoftheconsumersexpressedthatitwasadifficultyearin2015.Priceofseparationproductshaddroppedbelowthecost.Many
简介:Ⅰ.AturbulentsituationinIraqhadkeptdeterioratingalongwithrepercussionsof“prisonerabuse”story.Whilepoliticalreconstructionmadesomeprogress,dissociationappearedintheU.S.ledallianceregardingstationingtroopsinIraq.CombatsbetweenIraqiclericmilitantsandforeigncoalitionforceswereexpandingandfiercefightingsoccurredinseveralmajorcities.
简介:Quartercircularbreakwater(QCB)isanew-typebreakwaterdevelopedfromsemi-circularbreakwater(SCB).ThesuperstructureofQCBiscomposedofaquartercircularfrontwall,ahorizontalbaseslabandaverticalrearwall.ThewidthofQCB'sbaseslabisabouthalfthatofSCB,whichmakesQCBsuitabletobeusedonrelativelyfirmsoilfoundation.ThenumericalwaveflumebasedontheReynoldsaveragedNavier-StokesequationsforimpressibleviscosityfluidisadoptedinthispapertosimulatethehydraulicperformancesofQCB.SincethegeometryofbothbreakwatersissimilarandSCBhasbeenstudiedindepth,thehydraulicperformancesofQCBaregivenincomparisonwiththoseofSCB.
简介:ThereweresomecluestoBush'spoliciesinhissecondterm.AllthenewcabinetmembersoftheU.S.Governmentwereswornin,withmostofthehard-linershavingkepttheirpositionsormovedtonewoffices.TheBushAdministrationcontinuedtoincreasethedefensebudgetandputinmoreeffortsinreformingtheintelligenceandsecuritybodieswiththefocusonthe“socialsecurity”.
简介:I.Someoftheworld'smajorpowershavetakenvariousactionsbothathomeandabroadtomeetthechangingsituation.GorgeW.Bushwassuccessfullyre-electedwithbothanElectoralCollegemajorityandamajorityofthepopularvoteswhiletheU.S.RepublicanPartygainedcontrolofthecongress.TheBushcabinetshufflewasabouttocompletewithCondoleezzaRicetobetheSecretaryofStateandtheinfluenceofconservatiststobefurtherincreased.
简介:ImportofrareearthmetalandalloyinChinaup38%inthefirstquarteryear-on-yearAccordingtocustomsstatistics,Chinaimported27.67tonsofrareearthmetalsandalloysinMarch,valuedUSD427,200.ImportsfromJanuarytoMarchaccumulatedto100.4tons,up38.1%year-on-year.TheimportvaluetotaledUSD1.28millionduringthefirstthreemonths.DuringJanuarytomarch,Chinaimported65.9
简介:Asystemofunequalthicknessinterferencefilterswithquarterwavelengthstackwhichconsistsofaspacersurroundedbytwomultilayerstacksisdesigned,andtheexamplesofthefilterdesignaregiven.Thiskindoffiltersarenotonlycharacterizedbyhigh-transparency,butalsobyhigh-reflection,therefore,itissuperiortothecommonequalthicknessinterferencesystemwithquarterwavelength.Itiseasiertocontrolthemanufacturingtechniquesofthenewdesignascomparedwiththatofinterferencefilterofnon-quarterwavelength.
简介:China'sforeigntradeinthefirstquarterof2012AccordingtostatisticsoftheCustoms,China'sexportsandimportsinthefirstquarterof2012reached$859.37billion,upby7.3%overthesameperiodoflastyear.Specifically,exportsstoodat$430.02billion,upby7.6%yearonyear;imports$429.35billion,upby6.9%.Thethreemonthssawatradesurplusof$670million,compared.withadeficitof$2.22
简介:Real-timemeasurementofthefastaxisangleofaquarter-waveplatebasedonsimultaneousphaseshiftingtechniqueispresented.Thesimultaneousphaseshiftingfunctionisrealizedbyanorthogonalgrating,adiaphragm,ananalyzerarray,anda4-quadrantdetector.Theintensitiesofthelightbeamsfromthefouranalyzerswithdifferentazimuthsaremeasuredsimultaneously.Thefastaxisangleofthequarter-waveplateisobtainedthroughthefourlightintensityvalues.Inthismethod,rotatingelementsarenotrequired,soreal-timemeasurementisachieved.