简介：

简介：“Mymottoistomakeprogresswiththepassingoftime.""""""""HeisYonedaHideki,DirectorandPresidentofTQTOEastChinaCo.LTD.andhehasdonewhathehassuggestedHehasworkeddiligentlyforTOTOfor18years.Hehasformedthehabitofextendingfulleffort,allthetime.

简介：

简介：6-aminopenicillanicacid(6-APA)crystalsobtainedunderdifferentphysicalandchemicalconditionsofthesolutionsmaypresentdifferenthabits.Thehabitsofdiamond-shapedplatesaredesirablecomparedwithotherhabitsof6-APAcrystals.Toobtainideal6-APAcrystals,theeffectsofthemixedsolventsandadditiveson6-APAcrystalhabitswereinvestigated.Ethanoloracetonewasusedastheorganicsolvent,andimpuritiesexistinginthe6-APApurificationprocesswereusedastheadditives.6-APAgrowthhabitswerechangedwhentheconcentrationsofethanol,acetoneorphenylaceticacidwereincreasedtoexceedtheircriticalconcentration.Theobservedresultsshowthatthedominantfaceon6-APAcrystalswasidentifiedtobe{020},buttheoverallhabitwascontrolledbytherelativegrowthratesofthe{101}and{002}faces.Crystalgrowthratesandhabitscanbeappreciablychangedbyspecificadsorptionofadditivesoncrystalfaces.Insomecasessolventmoleculescanactinasimilarwayandmayberegardedasbulkadditives.Theeffectsofadditivesandorganicsolventson6-APAcrystalhabitsweretheresultsofadsorptioneffect,whichfittedtheexperimentalresultsquitewell.

简介：AnovelcrystalcharacterizationinstrumenthasbeenbuiltupinwhichacombinationofX-raymultiplediffractionandX-raytopographyisappliedtoenablingthecross-correlationbetweenmicro-crystallographicsymmetryanditsspatialdependenceinrelationtolatticedefects.Thisfacilityisusedtoexamine,inaselfconsistentmanner,growthsector-dependantchangestoboththecrystallographicstructureandthelatticedefectsassociatedwiththeactionofhabit-modifyingadditivesinanumberofrepresentativecrystalgrowthsystems.Inaddition,thenewinstrumentcanbeusedtoprobemicro-crystallographicaspects(suchasdistortiontocrystalsymmetry)andrelatetheseinaspatiallyresolvedmannertothecrystaldefectstructureincrystalsdopedwithknownhabitmodifiers.